CN114319761B - Building unit combined type heat-insulation and decoration integrated exterior wall cladding and installation method - Google Patents

Abstract

The application relates to a building unit combined thermal insulation and decoration integrated exterior wall hanging board and its installation method. The outer wall hanging board includes a plurality of unit hanging boards spliced with each other, and the unit hanging board includes an outer decorative board, a middle thermal insulation board and The reinforcement board of the inner layer, the two sides of the insulation board are fixedly connected with the decorative board and the reinforcement board respectively, and the reinforcement board is provided with a connection component for connecting with the keel frame; the unit hanging board is generally rectangular, and the lower side and left side of the unit hanging board Both are recessed inwards with insertion slots; the cross section of the insertion slots is trapezoidal; the upper and right sides of the unit hanging plate protrude outwards with insertion parts; the cross section of the insertion parts is a trapezoid that fits the insertion slots ; The insertion groove of the unit hanging plate is clamped with the insertion portion of the adjacent unit hanging plate; the unit hanging plate also includes a sealing component for sealing and fixing the insertion groove and the insertion portion. The application has the effect of improving the sealing performance of the seams of the thermal insulation external wall hanging boards.

Description

A building unit combined thermal insulation and decoration integrated exterior wall hanging board and its installation method

technical field

The present application relates to the technical field of building exterior walls, in particular to a building unit combined thermal insulation and decoration integrated exterior wall hanging board and an installation method.

Background technique

With the improvement of my country's requirements for green construction, energy conservation and emission reduction, and the sharp increase in labor market prices, new composite thermal insulation wall panels have emerged as the times require. The new composite thermal insulation wall panel is composed of concrete surface layers on both sides (inner leaf plate, outer leaf plate) and a middle insulation board. The inner and outer leaf wall panels are fixedly connected by glass fiber anchors or stainless steel anchors, and the middle insulation board is made of Organic insulation boards are spliced together. During the splicing and installation of composite thermal insulation wall panels, the gap between the wall panels is usually sealed by filling the sealant at the joints of the outer leaf plates.

In view of the existing gap sealing technology, the inventor believes that the joints of external wall panels are often the places where rainwater and dirt gather, and the sealant at the joints has been exposed to wind, sun and rain for a long time. The surface of the outer leaf board of the hanging board is more prone to aging and failure, which will lead to cracks at the joints of the wall boards, and the external rainwater can easily penetrate into the interior of the thermal insulation external wall, which will cause the middle thermal insulation board to absorb water and become damp, which will make the thermal insulation performance and durability of the external wall board decline.

Contents of the invention

In order to improve the sealing performance of the joints of the heat-insulating exterior wall siding, the present application provides a building unit combined heat preservation and decoration integrated exterior wall siding and an installation method.

In the first aspect, a building unit combined thermal insulation and decoration integrated exterior wall hanging panel provided by the application adopts the following technical scheme:

A building unit combined thermal insulation and decoration integrated exterior wall hanging board, which includes a plurality of unit hanging boards spliced with each other, and the unit hanging board includes an outer decorative board, a middle thermal insulation board and an inner reinforcement board. Both sides of the insulation board are respectively fixedly connected with the decorative board and the reinforcement board, and the reinforcement board is provided with a connection assembly for connecting with the main structure; Both the lower side and the left side are inwardly recessed to have insertion slots; the section of the insertion slots is trapezoidal; the upper side and the right side of the unit hanging plate protrude outwards with insertion parts; the insertion parts The cross-section is a trapezoid that fits the insertion groove; the insertion groove of the unit hanging plate is engaged with the insertion portion of the adjacent unit hanging plate; the unit hanging plate also includes a The plugging groove and the plugging part are sealed and fixed sealing components.

By adopting the above-mentioned technical scheme, the lower side and the left side of the unit hanging boards are recessed inwardly to have insertion slots, and the upper side and the right side are both protruding outwards to have insertion parts; so that two adjacent hanging boards can be spliced together. Insert the splicing part of one siding board into the socket slot of another siding board to realize the combined seamless splicing of unit siding boards, which is conducive to improving the aesthetics of the overall outer surface of the external wall siding board; On the side wall where the joint groove and the socket part are close to each other, the sealing component is hidden inside the joint of the two hanging boards, which improves the durability of the sealing component compared with the exposed sealing strip; in addition, the trapezoidal shape of the socket The setting makes it difficult for external rainwater and cold air to penetrate into the interior of the unit hanging plate through the tortuous groove wall and sealing components, thereby playing the role of waterproof, heat preservation and heat insulation, and greatly improving the joints of the unit hanging plate. tightness.

Preferably, the blocking assembly includes a first sealing strip glued on the groove walls on both sides of the insertion groove, and a side wall glued on the abutment of the insertion part and the groove walls on both sides of the insertion groove The second sealing strip on the top; when the insertion part is completely engaged in the insertion groove, both the first sealing strip and the second sealing strip are in a squeezed state.

By adopting the above-mentioned technical scheme, when the socket part is completely engaged in the socket groove, both the first sealing strip and the second sealing strip are in a squeezed state, and the gap between the socket part and the socket groove It is tightly filled by the first sealing strip and the second sealing strip. Compared with filling a sealing strip in the gap, cracking and shrinkage will occur after the sealing strip fails. This application uses two sealing strips to seal the gap tightly. The sealing performance of the gap is greatly improved, and the influence of the failure of the sealing strip on the sealing performance of the unit hanging plate is reduced.

Preferably, the blocking assembly further includes a bonding strip and a frosted strip for reducing the frictional resistance when the socket part is plugged into the socket slot; the bonding strip is bonded to the first sealing strip The side near the second sealing strip; the frosted strip is bonded to the side of the second sealing strip close to the first sealing strip; the bonding strip is made of microcapsule mixture, and the microcapsule The capsule mix includes the following raw materials in parts by mass: 20-30 parts of epoxy resin, 10-15 parts of polyamide resin, 5-7 parts of hydroxypropyl methylcellulose, 7-9 parts of amyl acetate, 0.5 parts of dispersant -1 part, 20-25 parts of microcapsules; wherein, the microcapsules are made by wrapping the capsule core with the capsule wall, and the mass ratio of the capsule wall to the capsule core is 1:(1.5-2.1); the capsule wall The raw materials include polyvinyl alcohol, and the capsule core includes the following raw materials in parts by mass: 50-60 parts of phenolic resin, 20-25 parts of tetraethylenepentamine, and 20-25 parts of lignocellulose; The gravel mixture includes the following raw materials in parts by mass: 10-20 parts of epoxy resin, 8-14 parts of polyamide resin, 3-5 parts of hydroxypropyl methylcellulose, 4-4 parts of amyl acetate 6 parts; corundum 15-25 parts, nano silicon carbide 20-30 parts, calcined kaolin 15-20 parts, water 20-25 parts.

By adopting the above-mentioned technical scheme, the adhesive strip made by the microcapsule mixture, in which epoxy resin, polyamide resin, hydroxypropyl methyl cellulose and amyl acetate act together to form a cohesive The base material of the microcapsule core, phenolic resin, tetraethylenepentamine, and lignocellulose in the core of the microcapsule form a colloid with strong cohesive force, and the core is wrapped in the film wall formed by polyvinyl alcohol , as the microcapsules are uniformly dispersed in the base material through the action of the dispersant; thereby forming a microcapsule mixture; the microcapsule mixture gradually solidifies and adheres to the surface of the first sealing strip at room temperature to form a bonding strip;

The synergistic action of corundum, nano-silicon carbide and kaolin in the abrasive strip composed of gravel mixture produces several abrasive particles with high hardness. It is evenly dispersed in the base material co-generated with amyl acetate to form a gravel mixture, which gradually solidifies and adheres to the surface of the second sealing strip at room temperature to form a frosted strip;

When the socket part is plugged into the socket slot, the frosted strip and the bonding strip will rub against each other, and the microcapsules in the bonding strip have certain lubricity and deformation force, which is beneficial to reduce the friction between the socket groove and the socket part. The friction resistance encountered during plugging is convenient for both plugging; during the plugging process, the microcapsules on the surface and inside of the adhesive strip are broken under the friction and extrusion of the frosted particles in the frosted strip, and the colloid core in the microcapsules flows out , fill in the gap between the contact surface of the adhesive strip and the frosted strip, solidify and condense at room temperature to realize the bonding and fixing between the adhesive strip and the frosted strip; further strengthen the gap between the first sealing strip and the second sealing strip The tightness of the connection, so that the sealing of the joints of the unit siding is consolidated and improved.

In addition, since the adhesive strip and the frosted strip use the same material to form the base material, the base material is the same, so that the interface barrier between the adhesive strip and the frosted strip is reduced, and the colloidal capsule core can be better bonded between the adhesive strip and the frosted strip. The diffusion and flow between the strips, and then make the colloidal capsule core and the high-hardness abrasive particles solidify and coagulate to form a tight bonding layer, which has good thermal stability and barrier properties, which is not only conducive to lifting the seam of the unit hanging board It is also beneficial to improve the fire resistance and heat insulation performance of the seams.

Preferably, the capsule core also includes the following raw materials in parts by mass: 3-7 parts of fatty alcohol polyoxyethylene ether.

By adopting the above technical scheme, adding fatty alcohol polyoxyethylene ether in the capsule core is beneficial to improve the permeability of the colloidal capsule core, so that the colloidal capsule core can fully penetrate into the contact surface of the adhesive strip and the frosted strip. The voids can even penetrate into the interior of the base material, thereby further improving the bonding force between the adhesive strip and the frosted strip, and improving the sealing of the seam.

Preferably, the microcapsule mixing material further includes the following raw materials in parts by mass: 2-5 parts of 3-mercaptopropyltrimethoxysilane.

By adopting the above-mentioned technical scheme, 3-mercaptopropyltrimethoxysilane is added in the microcapsule mixture, and the 3-mercaptopropyltrimethoxysilane has a certain lubricity, which is beneficial to make the microcapsule mixture The components reduce friction during agitation, making the microcapsules less prone to breakage when mixed in the base.

Preferably, the dispersant is vinyl bis stearamide and/or polyethylene wax.

By adopting the above-mentioned technical scheme, vinyl bis stearamide not only has good external lubricating effect, but also has good internal lubricating effect, which is conducive to making the microcapsules obtain extremely high surface finish and smoothness; polyethylene wax as Lubricant, with stable chemical properties and good electrical properties. Compared with PVC and other external lubricants, polyethylene wax has a stronger internal lubrication effect, which is conducive to the uniform dispersion of microcapsules in the base material; when vinyl double When stearamide and polyethylene wax are used in combination, the synergistic effect of the two can form a "waxed" surface layer on the surface of the adhesive strip, which is beneficial to improve the wear resistance of the adhesive strip, thereby reducing the abrasive strip and stickiness. The friction loss caused by the adhesive strip base material when the strip is rubbed and extruded.

In the second aspect, the present application provides a method for installing a building unit combined thermal insulation and decoration integrated exterior wall hanging board, which adopts the following technical solution:

A method for installing a building unit combined thermal insulation and decoration integrated exterior wall hanging board, comprising the following steps:

Step 1, install the plugging component in the socket slot and the socket of the hanging plate of the unit to be installed;

Step 2, insert the plug-in portion of the unit hanging plate equipped with the plugging component into the slot of the fixedly installed previous unit hanging plate, so as to realize the splicing of two unit hanging plates;

Step 3, the spliced unit hanging plate is fixedly connected to the keel frame through the connecting component;

Step 4, repeat the above steps to complete the installation and fixation of the insulation unit hanging plate.

Preferably, in the first step, the installation of the sealing assembly specifically includes: pasting the first sealing strip and the second sealing strip respectively on the insertion slot and the insertion portion of the unit hanging plate to be installed.

Preferably, in said step one, the microcapsule mixture is coated on the first sealing strip, and the gravel mixture is coated on the second sealing strip;

The preparation method of described microcapsule mixture comprises the following steps:

S1-1, mixing phenolic resin, tetraethylenepentamine and lignocellulose, raising the temperature to 55-65°C, stirring evenly, to prepare microcapsule core liquid;

S1-2, dissolving polyvinyl alcohol in water whose mass is twice the mass of polyvinyl alcohol, heating to 80-85°C, and stirring evenly to obtain an aqueous solution of polyvinyl alcohol;

S1-3, mixing and emulsifying the microcapsule core liquid and polyvinyl alcohol aqueous solution to obtain an emulsified mixed liquid; stirring the emulsified mixed liquid at a constant temperature of 40°C until it reaches a gel state; standing still and sieving to obtain microcapsules;

S1-4, mixing epoxy resin, polyamide resin, hydroxypropyl methylcellulose, amyl acetate and dispersant, raising the temperature to 90-100°C, and stirring evenly to obtain a base material;

S1-5, adding the microcapsules into the base material, mixing uniformly at a constant temperature of 55-60° C., and standing for 6 hours to obtain a microcapsule mixture; the preparation method of the gravel mixture comprises the following steps:

S2-1, mixing corundum, nano-silicon carbide, calcined kaolin and water, stirring and granulating to obtain frosted particles;

S2-2, mixing epoxy resin, polyamide resin, hydroxypropyl methylcellulose, and amyl acetate, heating up to 90-100°C, and stirring evenly to obtain a base material;

S2-3, adding the frosting particles into the base material and mixing evenly to obtain a gravel mixture.

By adopting the above technical scheme, prepare the microcapsule mixture of the adhesive strip and the gravel mixture of the frosted strip, and brush it during the splicing and installation of the unit hanging board; and frosted strips are in a slightly cured state, which is beneficial to reduce the frictional resistance received when the two unit siding plates are spliced, and is easy to install; during the splicing process, the bonding, fixing and sealing of the unit siding plates are completed, reducing It eliminates the installation of other fixing devices, which is conducive to improving the efficiency and quality of the installation work of the external wall hanging panels.

In summary, the present application includes at least one of the following beneficial technical effects:

1. In this application, the lower side and the left side of the unit hanging boards are recessed inwards to have insertion slots, and the upper side and the right side are protruding outwards to have insertion parts; so that when two adjacent hanging boards are spliced together, one The plug-in part of the hanging board is inserted into the slot of another hanging board to realize the combined seamless splicing of the unit hanging board, which is conducive to improving the aesthetics of the overall outer surface of the hanging board on the external wall; the plugging component is set in the slot On the side wall close to the insertion part, the sealing component is hidden inside the joint of the two hanging panels, which improves the durability of the sealing component compared with the exposed sealing strip; in addition, the trapezoidal setting of the insertion groove It makes it difficult for external rainwater and cold air to penetrate into the interior of the unit hanging plate through the tortuous wall of the insertion groove and the sealing component, thus playing the role of waterproof, heat preservation and heat insulation, and greatly improving the sealing of the joint of the unit hanging plate ;

2. In this application, there are adhesive strips and frosted strips for reducing the frictional resistance when the socket part and the socket are plugged in. The inside of the adhesive strip is doped with microcapsules, and the frosted strip is doped with frosted particles. When the socket part is plugged into the socket slot, the frosted strip and the bonding strip contact and rub, and the microcapsules in the bonding strip have certain lubricity and deformation force, which is beneficial to reduce the friction between the socket groove and the socket part. The frictional resistance received during connection facilitates the insertion of the two; during the insertion process, the microcapsules on the surface and inside of the adhesive strip are broken under the friction and extrusion of the frosted particles in the frosted strip, and the colloid core in the microcapsules flows out. Fill in the gap between the bonding strip and the matte strip, and solidify and condense at room temperature to realize the bonding and fixing between the bonding strip and the frosting strip; thereby strengthening the connection between the first sealing strip and the second sealing strip Tightness, so that the sealing of the joints of the unit siding is consolidated and improved.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure when the unit hanging boards are spliced according to Embodiment 1 of the present application.

Fig. 2 is a cross-sectional view of the partial structure of the unit hanging plate in Example 1 of the present application, especially for showing the blocking component between two adjacent unit hanging plates and the connecting component between the unit hanging plate and the main structure.

Fig. 3 is a partially enlarged view of A in Fig. 2 .

FIG. 4 is a partially enlarged view of B in FIG. 2 .

Fig. 5 is a cross-sectional view of the partial structure of the spliced unit hanging panels in Example 2 of the present application, especially for showing the splicing structure between two adjacent unit hanging panels.

Explanation of reference signs:

1. Unit hanging board; 11. Decorative board; 12. Insulation board; 13. Reinforcement board; 14. Inserting groove; 15. Inserting part; 2. First sealing strip; 3. Second sealing strip; 4. Knot bar; 5, frosted bar; 6, connecting component; 61, right-angle connection angle code; 62, fixing bolt; 7, dragon skeleton.

Detailed ways

The present application will be described in further detail below in conjunction with accompanying drawings 1-5.

See Table 1 for the source information of the raw materials used in the following examples and comparative examples.

Table 1

Example

Example 1

The embodiment of the present application discloses a building unit combined thermal insulation and decoration integrated exterior wall hanging board. Referring to Fig. 1 and Fig. 2, the exterior wall hanging board comprises several unit hanging boards 1 spliced with each other, and the unit hanging board 1 comprises the decorative board 11 of the outer layer, the insulation board 12 of the middle layer and the reinforcement board 13 of the inner layer, and the insulation board 12 is Made of lightweight thermal insulation material, insulation board 12 is made by foam board in the embodiment of the application, and insulation board 12 can also preferably be benzene board, rock wool, polyurethane, EPS or XPS insulation board in other embodiments; The insulation board 12 The two sides are respectively fixedly connected with the decorative board 11 and the reinforcing board 13. The decorative board 11 can be made of decorative materials such as stone boards, pottery boards, and cement fiber boards. In the embodiment of the application, the decorative board 11 is made of stone boards; the reinforcing board 13 can be selected from light cement. board, refractory fiberboard, etc., the reinforcing board 13 in the embodiment of the present application is made of lightweight cement board.

Referring to Fig. 2 and Fig. 3, the reinforcing plate 13 is provided with the connecting assembly 6 for being connected with the keel frame 7; The frame 7 and the reinforcing plate 13 are in contact with the side away from the decorative plate 11, and the reinforcing plate 13 and the keel frame 7 are pre-opened with installation holes at the positions corresponding to the right-angled connecting corners 61, and the fixing bolts 62 extend through the right-angled connecting corners 61. In the mounting holes, the fixing bolts 62 are threadedly connected with the reinforcing plate 13 and the keel frame 7 respectively through the mounting holes, and the fixing bolts 62 are tightened to realize the installation and fixing of the unit hanging plate 1 and the main structure.

Referring to Fig. 2 and Fig. 4, the unit hanging plate 1 has a rectangular shape as a whole, and the lower side and the left side of the unit hanging plate 1 are recessed inwardly with a socket 14; the cross section of the socket 14 has a wide opening and a narrow bottom. trapezoidal; the upper side and the right side of the unit hanging plate 1 protrude outwards with a socket 15; the cross section of the socket 15 is a trapezoid that fits with the socket groove 14; when the unit hanging plate 1 is installed, The insertion slot 14 of one unit hanging plate 1 is clamped with the insertion portion 15 of another unit hanging plate 1, and the two unit hanging plates 1 realize seamless splicing; The plug-in part 15 seals and fixes the blocking assembly.

The sealing assembly includes the first sealing strip 2 glued on the groove walls on both sides of the insertion groove 14, and the second sealing strip 2 glued on the side walls of the insertion part 15 and the groove walls on both sides of the insertion groove 14. Strip 3; in the embodiment of the application, the first sealing strip 2 and the second sealing strip 3 all adopt elastic rubber strips; in other embodiments, the first sealing strip 2 and the second sealing strip 3 can also use foam strips, silica gel strips, etc. . When the insertion part 15 is fully engaged in the insertion groove 14, the first sealing strip 2 and the second sealing strip 3 are tightly abutted, both of which are in a squeezed state, so as to realize the sealing of the seam of the unit hanging plate 1. Blocking.

This embodiment also discloses a method for installing the above-mentioned building unit combined thermal insulation and decoration integrated exterior wall hanging board, which specifically includes the following steps:

Step 1, paste the first sealing strip 2 and the second sealing strip 3 respectively on the insertion slot 14 and the insertion portion 15 of the unit hanging plate 1 to be installed;

Step 2, insert the plug-in part 15 of the unit hanging plate 1 to be installed into the plug-in slot 14 of the previous unit hanging plate 1 that has been fixedly installed, and the first sealing strip 2 and the second sealing strip 3 are connected during the insertion process Both are extruded to realize splicing and fixing of two unit hanging boards 1;

Step 3, extend the fixing bolt 62 through the right-angle connection corner code 61 into the pre-opened installation hole of the reinforcing plate 13, tighten the fixing bolt 62, and fix the unit hanging plate 1 on the keel frame 7 of the main structure;

Step 4: Repeat the above steps to complete the installation and fixation of the hanging plate 1 of the thermal insulation unit.

Example 2

Referring to FIG. 5 , the difference between this embodiment and Embodiment 1 is that the blocking assembly further includes an adhesive strip 4 and a frosted strip 5 for reducing frictional resistance when the insertion part 15 is inserted into the insertion groove 14 .

Adhesive strip 4 is bonded on the side of first sealing strip 2 near second sealing strip 3, and frosted strip 5 is bonded on the side of second sealing strip 3 near first sealing strip 2; Adhesive strip 4 is made of microcapsules Made of mixture, the surface and inside of the adhesive strip 4 are filled with microcapsules, and the microcapsules are wrapped with a capsule core with strong adhesion; the frosted strip 5 is made of gravel mixture, and the frosted strip 5 is doped with The frosted particles protrude on the surface of the frosted strip 5; when the socket part 15 is inserted into the socket groove 14, the frosted strip 5 and the adhesive strip 4 abut and rub against each other, and the microcapsules in the adhesive strip 4 have a certain lubricity and deformation force, which helps to reduce the frictional resistance received when the socket slot 14 and the socket part 15 are plugged in, and facilitates the plugging of the two; The frosted particles in strip 5 break under the friction and extrusion, and the colloid capsule core in the microcapsules flows out, fills the gap between the abutting surfaces of the adhesive strip 4 and the frosted strip 5, and solidifies and condenses at room temperature to realize the bonding strip 4 and the frosted strip 5 are bonded and fixed, thereby realizing the bonding and fixing of the two unit hanging panels 1 .

This embodiment also discloses a method for installing the above-mentioned building unit combined thermal insulation and decoration integrated exterior wall hanging board, which specifically includes the following steps:

step one:

S1, preparation of microcapsule mixture:

S1-1, add 50kg of phenolic resin, 25kg of tetraethylenepentamine and 25kg of lignocellulose into the mixer and mix, that is, the mass ratio of phenolic resin, tetraethylenepentamine and lignocellulose is 2:1:1; heat up to 55°C And keep the constant temperature for 30min, and stir for 30min under the condition that the stirring speed is 110r/min, and make the microcapsule core liquid;

S1-2, dissolving 50kg of polyvinyl alcohol in 100kg of water, adding to a stirring pot, heating to 80°C, and stirring evenly at a stirring speed of 50r/min to obtain an aqueous solution of polyvinyl alcohol;

S1-3, take out 20kg polyvinyl alcohol aqueous solution and 30kg microcapsule core liquid and mix them in the emulsification pot, that is, the mass ratio of polyvinyl alcohol aqueous solution to microcapsule core liquid is 1:1.5, at 85°C, the speed is 2000r/min emulsified under the condition of 10s to obtain the emulsified mixture; put the emulsified mixture into the stirring pot, and stir it at a constant temperature of 35°C at a stirring speed of 35r/min until it was in a gel state; Sieve at a speed of 1500r/min in the sieving machine to obtain microcapsules with a particle size of 200-250 microns;

S1-4, add 20kg epoxy resin, 10kg polyamide resin, 5kg hydroxypropyl methylcellulose, 7kg pentyl acetate, 0.5kg vinyl bis stearamide into the stirring pot and mix, heat up to 90°C, and stir Stir for 30min under the condition of 150r/min at a speed to obtain the base material;

S1-5, adding 20kg of microcapsules into the base material, stirring for 10 minutes at a constant temperature of 55°C and a stirring speed of 30r/min, and standing for 6 hours to obtain a microcapsule mixture;

S2, preparation of gravel mixture:

S2-1, mixing 10kg of corundum, 8kg of nano-silicon carbide, 7kg of calcined kaolin and 20kg of water into a granulator, and granulating through the granulator to obtain frosted particles with a particle size of 100-150 microns;

S2-2, add 20kg of epoxy resin, 10kg of polyamide resin, 5kg of hydroxypropyl methylcellulose, and 7kg of amyl acetate into the mixing pot and mix them, raise the temperature to 90°C, and stir at a stirring speed of 150r/min 30min, get base material;

S2-3, adding frosted particles into the base material for mixing, and stirring for 10 minutes at room temperature at a stirring speed of 110 r/min to obtain a gravel mixture;

S3, paste the first sealing strip 2 and the second sealing strip 3 on the insertion slot 14 and the insertion portion 15 of the unit hanging plate 1 to be installed, respectively;

S4, use a brush to coat a layer of microcapsule mixture on the surface of the first sealing strip 2 of the unit hanging plate 1, and coat a layer of gravel mixture on the surface of the second sealing strip 3 of the unit hanging plate 1 to be installed ;

Step 2, insert the plug-in part 15 of the glued unit hanging plate 1 into the plug-in slot 14 of the previous unit hanging plate 1 that has been fixedly installed, and the first sealing strip 2 and the second sealing strip 3 are all extruded, and the adhesive strip 4 formed by the micro-curing of the microcapsule mixture and the frosted strip 5 formed by the micro-cured gravel mixture are rubbed and extruded, and the microcapsules in the adhesive strip 4 are crushed by the abrasive particles of the abrasive strip 5 Extrusion friction breaks, the colloid capsule core in the microcapsule flows out, and the adhesive strip 4 and the frosted strip 5 are bonded to realize the splicing and fixing of the two unit hanging plates 1;

Step 3, extend the fixing bolt 62 through the right-angle connection corner code 61 into the pre-opened installation hole of the reinforcing plate 13, tighten the fixing bolt 62, and fix the unit hanging plate 1 on the keel frame 7 of the main structure;

Step 4, repeat the above S3, S4 and steps 2 and 3 to complete the installation and fixation of the hanging plate 1 of the thermal insulation unit.

Example 3-6

The difference between embodiment 3-6 and embodiment 2 is each component of microcapsule mixture, component content is different, the each component content of gravel mixture is different, and temperature and standing time in the preparation process Different, the amount of raw materials of each component of the microcapsule mixture in Examples 1-5, the amount of raw materials of each component of the gravel mixture and the parameters of temperature and time are shown in Table 2.

Table 2

Example 7-8

The difference between this example and Example 2 lies in that: 3kg and 7kg of fatty alcohol polyoxyethylene ether were added to S1-1 respectively.

Examples 9-11

The difference between this example and Example 2 is that 2kg, 3.5kg, and 5kg of 3-mercaptopropyltrimethoxysilane were added to S1-4, respectively.

Example 12

The difference between this example and Example 4 is that: 3kg of fatty alcohol polyoxyethylene ether is added to S1-1; 3.5kg of 3-mercaptopropyltrimethoxysilane is also added to S1-4.

comparative example

Comparative example 1

The only difference from Example 2 is that the phenolic resin in the capsule core is replaced by an equivalent amount of polyamide resin.

Comparative example 2

The only difference from Example 2 is that the tetraethylenepentamine in the capsule core is replaced by an equivalent amount of dodecyldimethyl tertiary amine.

Comparative example 3

The only difference from Example 2 is: the lignocellulose in the capsule core is replaced by an equivalent amount of methyl cellulose.

Comparative example 4

The only difference from Example 2 is that the polyvinyl alcohol in the capsule wall is replaced by an equivalent amount of diatomaceous earth.

Comparative example 5

The only difference from Example 2 is that the frosted strips are replaced by adhesive strips.

performance test

1. Detection of bond strength: According to the sample preparation and test method in GB-T2791-1995 "Test Method of Adhesive T-Peel Strength Flexible Material to Flexible Material", the samples prepared in Examples 2-12 and Comparative Examples 1-5 The obtained 15g microcapsule mixture and 15g gravel mixture are evenly painted on the side surfaces of two flexible test pieces (rubber sheets with a thickness of 3mm and a length of 15mm) respectively, and the two flexible test pieces After rubbing and extruding the glue-coated surface of the sheet, wait for 30 minutes, so that the microcapsule mixture and the gravel mixture between the two flexible test pieces are bonded and solidified; then perform the peel strength test, and the recorded data is the initial peel strength; The greater the initial peel strength, the greater the bonding strength of the adhesive and the better the adhesive bonding performance.

2. Water resistance detection: the 15g microcapsule mixture and the 15g gravel mixture prepared in Examples 2-12 and Comparative Examples 1-5 are evenly painted on two flexible test pieces (thickness is 3mm, length 15mm rubber sheet) on the side close to each other, after rubbing and squeezing the rubberized surfaces of the two flexible test pieces, wait for 30 minutes, so that the microcapsule mixture and gravel between the two flexible test pieces are mixed The mixture is bonded and cured; soak the two bonded flexible test pieces in water with a water temperature of 20°C, and perform the peel strength test in the above-mentioned bond strength test after soaking for 7 days, and the recorded data is the water-immersion peel strength; compare water-immersion The difference between the peel strength and the initial peel strength, the smaller the difference, the less the amount of moisture infiltrated into the adhesive, and the better the water resistance of the adhesive.

The specific detection data of detection test 1-2 are shown in Table 3.

table 3

Initial peel strength (MPa) Water immersion peel strength (MPa) Example 2 8.2 7.6 Example 3 8.3 7.8 Example 4 8.5 8.1 Example 5 8.3 7.7 Example 6 8.6 8.1 Example 7 8.8 8.5 Example 8 8.6 8.2 Example 9 8.4 7.9 Example 10 8.5 8.0 Example 11 8.0 7.2 Example 12 8.9 8.8 Comparative example 1 6.8 5.3 Comparative example 2 7.6 6.7 Comparative example 3 7.2 6.5 Comparative example 4 6.5 5.2 Comparative example 5 7.5 6.7

According to the performance detection data of embodiment 2-6 in table 3, the initial peel strength of the colloid formed after both the microcapsule mixture and the gravel mixture made by embodiment 2-6 are all greater than 8MPa , has good bonding strength; the difference between the water-immersed peel strength and the initial peel strength of the colloid after soaking in water for 7 days is within 6MPa, the difference is small, and the water resistance of the colloid is good, which is conducive to the lifting of the unit. Water-resistant seal at seams.

The performance testing data of Examples 2, 3, and 5 are similar. Embodiments 2, 3, and 5 adjust the raw material components of the microcapsule mixture, the raw material components of the mortar mixture, and the process parameters within the proportioning range. It has little influence on the performance of the colloid; and embodiment 4 and embodiment 6 select vinyl bis stearamide and polyethylene wax both according to the mass ratio of 1:1 to obtain the mixed dispersion As compared with the dispersant in Examples 2, 3, and 5, only one of vinyl bis stearamide and polyethylene wax is used as the dispersant, the colloids prepared in Examples 4, 6 have higher initial peel strength, The difference between the water-immersed peel strength and the initial peel strength is 4MPa and 5MPa, indicating that the adhesive strength and water resistance of the colloids prepared in Examples 4 and 6 have been improved, which is more conducive to improving the sealing of the seam of the unit hanging board sex. The inventor believes that when vinyl bis stearamide and polyethylene wax are used in combination, the two will have a synergistic effect, and a "waxy" surface layer may be formed on the surface of the adhesive strip formed by the micro-curing of the microcapsule mixture , so as to reduce the friction loss caused by the friction and extrusion of the abrasive strip formed by the micro-curing of the gravel mixture and the adhesive strip. The capsule core can better bond the adhesive strip and the frosted strip, thereby improving the adhesive strength of the colloid formed after the adhesive strip and the frosted strip are bonded and cured. The colloid is tightly bonded and the water resistance of the colloid also got a boost.

Examples 7 and 8 added fatty alcohol polyoxyethylene ethers in the capsule core preparation process on the basis of Example 1, and both the microcapsule mixture and the gravel mixture obtained in Examples 7 and 8 were bonded and solidified The initial peel strength of the formed colloid has been significantly improved, the difference between the water-immersed peel strength and the initial peel strength has been significantly reduced, and the difference has been reduced to 3-4MPa, which shows that the colloids obtained in Examples 7 and 8 have an adhesive strength. The performance and water resistance have been greatly improved, which in turn makes the sealing of the joints of the unit hanging panels more significant. The inventor analyzed that adding fatty alcohol polyoxyethylene ether in the capsule core is beneficial to improve the permeability of the colloidal capsule core, so that the colloidal capsule core can fully penetrate into the gap between the bonding strip and the frosted strip contact surface , It can even penetrate into the base material of the adhesive strip and the frosted strip, thereby enhancing the bonding force between the adhesive strip and the frosted strip.

Embodiment 9-11 has added 3-mercaptopropyltrimethoxysilane in the microcapsule mixing material on the basis of embodiment 2, and the initial peel strength of the colloid that embodiment 9, 10 makes is compared with embodiment 2 The initial peel strength of colloid has little promotion, shows that adding 3-mercaptopropyltrimethoxysilane in the microcapsule mixture is conducive to making each component in the microcapsule mixture reduce friction in the stirring process, thereby The microcapsules are not easily broken when mixed in the base material, the retention rate of the microcapsules in the microcapsule mixture is higher, and the integrity of the capsules is better, thereby reducing the loss of the capsule core, and more capsule cores can be hung on the unit It plays a role in splicing, which is beneficial to the bonding and fixing between the unit hanging boards. Compared with the initial peel strength of the colloid obtained in Example 2, the initial peel strength of the colloid obtained in Example 11 decreased, and the difference between the water-immersed peel strength and the initial peel strength also increased to 8MPa, indicating that the colloid obtained in Example 11 The cohesive strength and water-resistance performance decline, the contriver analysis, in embodiment 11, the addition amount of 3-mercaptopropyltrimethoxysilane is more, may make the lubricity of outer capsule capsule wall too large, may cause bonding strip and frostbite When the strip is squeezed and rubbed, some microcapsules will not break, the capsule core cannot flow out, the bonding force between the adhesive strip and the frosted strip is reduced, and the gap between the adhesive strip and the frosted strip lacks the filling of the capsule core. Penetration of water molecules, thereby reducing the water resistance of the cured adhesive strip, and it is also not conducive to the sealing of the joints of the unit hanging board.

Example 12 adopts the raw material components and process parameters of Example 4, and adds 5kg of fatty alcohol polyoxyethylene ether and 3.5kg of 3-mercaptopropyltrimethoxysilane in the microcapsule preparation process, and the preparation of Example 12 The initial peel strength of the obtained colloid is obviously improved, and the difference between the water immersion peel strength and the initial peel strength is reduced to 1MPa, which shows that the adhesive strength and water resistance of the colloid obtained in Example 12 are significantly improved. Compared with Example 12, Example 12 2. Under the adjustment of raw material components and process parameters, with the gain effect of fatty alcohol polyoxyethylene ether and 3-mercaptopropyltrimethoxysilane, under the joint action of each component of the formula, the performance of the prepared colloid is improved. In order to be more suitable for improvement and promotion, it is more in line with the technical requirements of unit hanging board installation and splicing.

In comparative examples 1-3, the three substances of phenolic resin, tetraethylenepentamine, and lignocellulose in the capsule core were replaced individually. The initial peel strength of colloid obviously descends, and the difference of water immersion peel strength and initial peel strength is greater than 7Mpa, illustrates that comparative example 1-3 makes the adhesive strength and water resistance of colloid relatively poor, inventor's analysis, in the microcapsule capsule core Under the synergistic action of phenolic resin, tetraethylenepentamine, and lignocellulose, a colloid with strong cohesive force is formed. The cohesiveness between the colloid and the frosted strip is good, and the adhesive strip It is closely bonded with the frosting strip. If the above three substances are replaced, the replaced substances cannot produce synergistic effects, and cannot form a colloid with strong cohesive force or the mixture obtained by mixing has poor cohesiveness. , cross-linking and curing are weak, and the synergistic effect of the above three substances cannot be achieved, which in turn affects the bonding performance and water resistance of the colloid formed after bonding and curing.

In Comparative Example 4, the polyvinyl alcohol forming the capsule wall was replaced by an equivalent amount of diatomaceous earth. The colloid prepared in Comparative Example 4 had poor initial peel strength, and the difference between the water-immersed peel strength and the initial peel strength was large. Comparative Example 4 The bonding strength and water resistance of the obtained colloid are relatively poor. According to the inventor's analysis, the physical strength of diatomite is larger than that of polyvinyl alcohol, and the wall thickness of the capsule wall is thicker, which is difficult to rupture; It may be dispersed inside the adhesive strip and at the interface between the adhesive strip and the frosted strip, which hinders the flow and filling of the capsule core, which in turn leads to a decrease in the adhesive force between the adhesive strip and the frosted strip, and reduces the adhesive strength of the colloid and water resistance.

In comparative example 5, the frosted strips are replaced by adhesive strips. The colloid prepared in comparative example 5 has poor initial peel strength, and the difference between the water-immersed peel strength and the initial peel strength is large. The inventor analyzed that the friction of the frosted strips has been lost. The friction between the two adhesive strips is small, and the microcapsules cannot be broken and the capsule core cannot flow out only by extrusion. On the one hand, the lack of bonded capsule core between the two adhesive strips results in a decrease in the adhesive force , On the other hand, the microcapsules are broken and dispersed unevenly, so that there is a gap in the position where the two adhesive strips do not have the capsule core, and it is easy for water to infiltrate and affect the water resistance.

All of the above are preferred embodiments of the application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made according to the structure, shape, and principle of the application should be covered by the protection scope of the application. Inside.

Claims (5)

1. The utility model provides a building unit combination formula heat preservation decorates integration exterior wall cladding, includes a plurality of unit link plates (1) of mutually concatenation, unit link plate (1) include outer decorative board (11), heat preservation board (12) of middle level and reinforcing plate (13) of inlayer, the both sides of heat preservation board (12) respectively with decorative board (11) with reinforcing plate (13) fixed connection, reinforcing plate (13) are provided with coupling assembling (6) that are used for linking to each other with fossil fragments (7); the method is characterized in that: the unit hanging plate (1) is rectangular as a whole, and inserting grooves (14) are formed in the lower side and the left side of the unit hanging plate (1) in an inward sunken mode; the section of the inserting groove (14) is trapezoid; the upper side and the right side of the unit hanging plate (1) are outwards protruded with inserting parts (15); the section of the inserting part (15) is in a trapezoid shape matched with the inserting groove (14); the inserting grooves (14) of the unit hanging plates (1) are clamped with inserting parts (15) of adjacent unit hanging plates (1); the unit hanging plate (1) further comprises a plugging assembly for sealing and fixing the plugging groove (14) and the plugging part (15); the plugging assembly comprises a first sealing strip (2) adhered to the groove walls at two sides of the plugging groove (14), and a second sealing strip (3) adhered to the side wall of the plugging part (15) which is abutted to the groove walls at two sides of the plugging groove (14); when the inserting part (15) is completely clamped in the inserting groove (14), the first sealing strip (2) and the second sealing strip (3) are both in an extrusion state; the plugging assembly further comprises an adhesive strip (4) and a frosted strip (5) which are used for reducing friction resistance when the plugging part (15) is plugged with the plugging groove (14); the bonding strip (4) is bonded on one side of the first sealing strip (2) close to the second sealing strip (3); the frosted strip (5) is adhered to one side of the second sealing strip (3) close to the first sealing strip (2);

the bonding strip (4) is prepared from a microcapsule mixture, and the microcapsule mixture comprises the following raw materials in parts by mass: 20-30 parts of epoxy resin, 10-15 parts of polyamide resin, 5-7 parts of hydroxypropyl methyl cellulose, 7-9 parts of amyl acetate, 0.5-1 part of dispersing agent and 20-25 parts of microcapsule; wherein the microcapsule is prepared by wrapping a capsule core by a capsule wall, and the mass ratio of the capsule wall to the capsule core is 1 (1.5-2.1); the raw materials of the capsule wall comprise polyvinyl alcohol, and the capsule core comprises the following raw materials in parts by weight: 50-60 parts of phenolic resin, 20-25 parts of tetraethylenepentamine and 20-25 parts of lignocellulose;

the frosted strip (5) is made of gravel mixture; the gravel mixture comprises the following raw materials in parts by mass: 10-20 parts of epoxy resin, 8-14 parts of polyamide resin, 3-5 parts of hydroxypropyl methyl cellulose and 4-6 parts of amyl acetate; 15-25 parts of corundum, 20-30 parts of nano silicon carbide, 15-20 parts of calcined kaolin and 20-25 parts of water.

2. The building unit combined type heat preservation and decoration integrated exterior wall cladding board according to claim 1, wherein: the capsule core also comprises the following raw materials in parts by weight: 3-7 parts of fatty alcohol polyoxyethylene ether.

3. The building unit combined type heat preservation and decoration integrated exterior wall cladding board according to claim 2, wherein: the microcapsule mixture also comprises the following raw materials in parts by mass: 2-5 parts of 3-mercaptopropyl trimethoxy silane.

4. The building unit combined type heat preservation and decoration integrated exterior wall cladding board according to claim 1, wherein: the dispersing agent is vinyl bis-stearamide and/or polyethylene wax.

5. A method for installing a building unit combined type heat-insulating and decorating integrated exterior wall cladding according to any one of claims 1 to 4, characterized in that: the method comprises the following steps:

step one, mounting a plugging assembly on a plugging groove and a plugging part of a unit hanging plate (1) to be mounted;

inserting the inserting part (15) of the unit hanging plate (1) provided with the plugging component into the inserting groove (14) of the last unit hanging plate (1) which is fixedly installed, so as to realize the splicing of the two unit hanging plates (1);

step three, fixedly connecting the spliced unit hanging plate (1) with a keel frame (7) through a connecting component (6);

step four, repeating the steps to finish the installation and fixation of the hanging plate (1) of the heat preservation unit;

in the first step, the installation of the plugging assembly specifically includes: a first sealing strip (2) and a second sealing strip (3) are respectively stuck on a plug-in groove (14) and a plug-in part (15) of a unit hanging plate (1) to be installed; coating microcapsule mixture on the first sealing strip (2) and coating gravel mixture on the second sealing strip (3);

the preparation method of the microcapsule mixture comprises the following steps:

s1-1, mixing phenolic resin, tetraethylenepentamine and lignocellulose, heating to 55-65 ℃, and uniformly stirring to obtain microcapsule core liquid;

s1-2, dissolving polyvinyl alcohol in water with the mass of 2 times of that of the polyvinyl alcohol, heating to 80-85 ℃, and uniformly stirring to obtain a polyvinyl alcohol aqueous solution;

s1-3, mixing microcapsule core liquid with a polyvinyl alcohol aqueous solution, and emulsifying to obtain an emulsified mixed liquid; stirring the emulsified mixture to gel state at constant temperature of 40 ℃; standing and screening to obtain microcapsules;

s1-4, mixing epoxy resin, polyamide resin, hydroxypropyl methyl cellulose, amyl acetate and a dispersing agent, heating to 90-100 ℃, and uniformly stirring to obtain a base material;

s1-5, adding the microcapsule into a base material, uniformly mixing at the constant temperature of 55-60 ℃, and standing for 6 hours to obtain a microcapsule mixture;

the preparation method of the gravel mixture comprises the following steps:

s2-1, mixing corundum, nano silicon carbide, calcined kaolin and water, stirring and granulating to obtain frosted particles;

s2-2, mixing epoxy resin, polyamide resin, hydroxypropyl methyl cellulose and amyl acetate, heating to 90-100 ℃, and uniformly stirring to obtain a base material;

s2-3, adding the sand grinding particles into the base material, and uniformly mixing to obtain the gravel mixture.

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