JPS6223480A - Preparation of building base material - Google Patents

Abstract

PURPOSE:To promote curing and to strengthen bonding force, by mixing Portland cement, alumina cement and gypsum or lime to form a bonding material and heating said bonding material in the presence of water. CONSTITUTION:10-90pts.wt. of alumina cement is mixed with 10-90pts.wt. of Portland cement and 1-40pts. of gypsum is compounded with 100pts.wt. of the resulting cement mixture to form a bonding material. 10-500pts.wt. of an aggregate (e.g., calcium carbonate, clay, fly-ash) and 5-100pts.wt. of a sticking agent (e.g., vinyl acetate, vinyl chloride, an acrylic resin) are compounded with 101-140pts.wt. of said bonding material and a proper amount of water is uniformly mixed with the obtained mixture to form a mixed coating material which is, in turn, applied to the surface of a substrate in a laminar form. By this method, bonding strength is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates generally to a method for manufacturing architectural substrates, and more particularly to
Fixing means such as nails on the frame structure (after being fixed in this way, apply mortar to the surface)
Spraying relates to the production of paints or architectural substrates of the type to which paints can be applied.

BACKGROUND ART 1 - As for the above-mentioned type of architectural base material or method for producing the same, inventions such as those described in F are known.

(a) Coating IIi, resin over the entire surface of the wooden board.

A method in which a synthetic rubber, a water-soluble polymer, a solution of a pollutant, a waterproofing material containing Emulsilon, or a paint made by mixing these with inorganic particles or powder is applied so that the surface becomes uneven, and then dried and solidified (Tokukosho) 53-205
63) (b) Paint consisting of synthetic resin emulsion, hydraulic cement containing silicate, inorganic resin 11) with an apparent relative ITC of 0.4 or more), and aggregate is applied to the surface of the wooden board. χ
1. Method of forming an uneven surface
= 19) (c) A mixture of synthetic resin Emulnoyon 1 synthetic rubber latex, emulsion material Emulsion, bunal rubber and emulsion material Emulsilon on wood-based plate-like base material,
A construction product comprising a waterproof layer formed by applying either emulsilon mixed with polypropylene and a repellent substance, and a mixed coating material claw made of a binder and foamed resin granules arranged on the waterproof layer. Base material (Special Publication No. 5i1 (-47575)) These base materials for construction have a coating layer on the substrate surface that has good adhesion to wall coating materials such as mortar, and such base materials are suitable for use in the framework of buildings. After it is fixed to the structure by nailing, etc., mortar, stone/1゛♀ plaster, dolomite plaster, etc. can be applied directly on top of it.

Therefore, in wet method 1 method such as mortar wall of C1
Wood lath 1 Attachment to the framework structure of a lath base such as plywood (
It is possible to significantly omit the ↑゛ ground formation process, such as attaching waterproof paper, woven netting, etc. to lath substrates, and undercoating mortar, etc. to lath netting, thereby shortening the L period.

Problems with the Prior Art In the conventional method as described above, j! ”＜f
It was proposed to mix i-quality powder and use a binder such as portland cement, silica cement, blast furnace cement, fly ash cement, gypsum, super fast hardening cement, and high alumina fast hardening cement as the free powder. However, there have been no examples of using a binder consisting of a mixture of Portland cement or alumina cement and gypsum or lime. In addition, after applying these coating materials, they were applied with water and then cured and cured, but two or more days were required for the deposition and curing. Moreover, with this regimen,
When the binder hardens, it has reached a hydration rate of 80% or more, and no bonding structure due to water utilization reaction can be expected between the coating layer and the mortar layer that is coated on top of it. However, only the adhesive strength of the mortar itself and the anchoring effect caused by the surface shape of the coating layer could be expected. Its adhesive strength was about 1 to 2 kg/cm2, and it was prone to cracking, cracking, and peeling.

In addition, after the coating layer is formed, it is heated and dried at a temperature of 50°C or higher to interrupt the hydration reaction of the binder, so that the coating layer and mortar layer are separated when applying mortar. The technical idea of creating a strong bond between the two through water use reactions is well known, but l! ! There was a tendency for the initial strength of the paint film layer to be poor during construction and transportation of Tsukikawa Tsukikawa subgrade materials. In order to increase this initial strength, it was necessary to increase the hydration rate of the binder in the coating layer. That is, the problems of increasing the initial strength of a single coating film and strengthening the adhesive force due to the water-recycling reaction between the coating layer and the mortar X'5 were contradictory to each other.

Attempts have been made to use thermosetting cement as a binder and heat it at temperatures above 50'C for several minutes to dry and solidify the coating layer, but this method has not been able to produce commercially viable products. low,
In addition, the initial strength of the coating layer is improved, and the coating layer and mortar 1
There was still a contradictory relationship with the improvement of the connection between Japan and Japan.

Means for Solving Problems In the method of the present invention, a mixture of Gortland cement and alumina cement and 5i"r or lime is used as a binder, and the mixture is cured in the presence of water or under heated conditions. In addition to promoting the initial strength of the paint film layer and interrupting the hydration reaction of Portland cement through drying, it strengthens the adhesive force between the paint film layer and the mortar layer. Having provided an overview of the invention, the present invention will now be described in further detail through examples of the present invention.

Description of examples In the present invention, the substrate is plywood or NL fiberboard 1 gypsum board.

1 cement board, 1 wood cement board, 1 ALC board, 1 asbestos cement board, silica board, charcoal mug board, 9 resin boards, 9 foamed resin boards, and other inorganic boards, rocky boards, inorganic materials, and cultivated materials. It may be a board made of a mixed material with or a composite board of these boards.

As a binding material, a mixture of Portland cement or alumina cement and gypsum or lime is used. The mixture of Portland cement and alumina cement is preferably 10 to 90 parts by weight of alumina cement to 90 to 10 parts by weight of Portland cement. If the amount of Portland cement is small, the long-term strength of the base material cannot be expected after construction. On the other hand, if the amount of Portland cement is too large, the initial strength when manufacturing the base material cannot be obtained in a short drying time. Scratches and reduced productivity.

It is desirable that the amount is 1 to 40 parts by weight per 100 parts by weight of the mixture of cement and alumina cement.

If the blending amount of tenketsu or lime is small, crystals will not form in a short time and initial strength will not be obtained. On the other hand, if the amount of gypsum or lime is too large, a large amount of crystals will form in a short period of time, making it impossible to obtain long-term strength.

Aggregates mixed into coating materials include calcium carbonate, clay, fly ash, incineration ash, slag, sand, talc,
Inorganic aggregates such as limestone grains, silica stone grains, crushed stone grains, synthetic materials such as polyethylene, polystyrene, etc. There are inorganic lightweight aggregates such as foamed beads, foamed beads made of synthetic resins such as foamed polyethylene, polystyrene, and urethane, and synthetic light aggregates such as crushed granules of synthetic resin foam. Aggregates may be used alone or in combination.

The amount of aggregate mixed is preferably 10 to 500 parts by weight based on 101 to 140 parts by weight of the binder, and the amount thereof is adjusted as appropriate depending on the quality of the aggregate used.

Adhesive materials include vinyl acetate 8I fat, vinyl chloride resin,
Synthesis of acrylic resins, epoxy products, synthetic resins such as ethylene/m-vinyl acid resins, acrylonitrile butanoene rubber (NBR), butadiene acrylic rubber (MBR), styrene butadiene rubber (SBR), etc. These include water-soluble polymers such as rubber latex, vinyl alcohol, and methyl cellulose, which are used as a solution, preferably as an emuldicine. These sacred relics can be used alone or in combination with ff4, and should be used in amounts of 5 to 100 parts by weight per 101 to 140 parts by weight of old clothes. Part by weight: Adhesive material improves the adhesion of the aggregate and binder mixture, strengthens the adhesion between them and the base material, and further provides waterproofness after drying and hardening of the coating layer. At the same time, it improves the adhesion between the paint layer and the finish coating material applied thereon.If the amount of these adhesives is small, the adhesive strength between the base material and the paint layer increases. The adhesion between the coating layer and the finishing coating material decreases, and conversely, if the amount mixed is large, the cost will increase.

An appropriate amount of water is added to the mixture having the above-mentioned mixing ratio, mixed uniformly, and the mixed coating material is applied in a layer on the surface of the substrate. At this time, the surface of the coating layer may be formed to have an uneven surface, a rough surface, or a smooth surface. For example, when spraying a finishing coating material onto a base material into a stuff-like shape, it is best to form the coating layer into an uneven shape; It is preferable to form the film layer in a planar shape, and if you want to obtain a smooth finished coating surface, it is better to form the coating layer into a smooth surface. Further, when applying a thick coating finish such as mortar finish, it is preferable to make the coating layer uneven, and the pattern of the gate protrusions is selected as appropriate.

Prior to applying the mixed coating material, the same adhesive material as described above is applied to the surface of the base material using a coating device such as a roll twoter or flow coater, and dried to form a waterproof film.
A mixed coating material may be applied to the surface. Formation of a waterproof film not only improves waterproof properties, but also when a mixed coating material is applied directly onto the substrate surface when the substrate surface is not smooth or porous. It prevents the formation of voids and bubbles that often occur and increases the adhesive force between them. In this case, it is desirable that the adhesive used for the waterproof coating be one with high fluidity so that it can penetrate well into the substrate surface. The waterproof layer prevents any instantaneous delay or hindrance caused by these components depending on the material of the base material, and furthermore prevents contamination of the mixed coating material by these components. Of course, the waterproofing effect also has the effect of preventing warpage and decay of the base material.

The mixed coating material may be applied to the substrate by any known method. After the mixed coating material has been applied to the substrate or waterproof coating in a desired surface condition, it is inserted into a drying device to dry and solidify the coating layer. At this time, since alumina cement, Portland cement, and gypsum or lime are mixed in the bonding material, the thermosetting and quick-setting properties are affected, and therefore, by heating and drying, a portion of the bonding material is quickly removed. harden. The heating temperature is preferably 100°C or higher.

If the solidification proceeds too quickly, problems will arise in the adhesion of the mixed coating material, so it is desirable to add a setting retarder to the mixed coating material, which loses its setting retarding effect upon heating. Such setting retarders include oxycarboxylic acids or groups thereof such as citric acid, culfuric acid, malic acid, and 2-ketogluconic acid, or amide/carboxylic acids such as inosinic acid or salts thereof. These set retarders sequester calcium ions (Ca) under alkaline conditions (
chelation, complex salt formation) properties. By adding these setting retarders, the setting time can be adjusted within the range of several minutes to several tens of minutes, and it is preferable to set the setting time appropriately according to the production line.

The neutralization reaction of the Portland cement in the binder is interrupted by drying it in a short time due to heating, but since the alumina cement and gypsum or lime have hardened, transportation and construction of the base material will be hindered. The initial strength is given to the coating layer to the extent that it does not cause water damage, and when the base material is coated with mortar etc. during construction, it receives moisture and resumes its water use response. Therefore, crystals are formed between the mortar layer and the coating layer of the finishing coat, and the bond between them is strengthened. Of course, it is also possible to spray water onto the surface of the coating layer prior to applying the final coat.

Effects: The thermosetting and fast-curing properties of the binder harden rapidly when heated, improving productivity.

On the other hand, the hydration reaction of slow-hardening components is interrupted by short-term heating and drying, and when they are replenished with water during the construction of the base material, the hydration reaction between the coating layer and the finish coating layer is interrupted. When this is done simultaneously, crystals are formed between them and the adhesion becomes stronger. Therefore, there are no cracks, cracks, or drops.

Claims (1)

[Scope of Claims] [1] A waterproofing material containing a synthetic resin, synthetic rubber, water-soluble polymer, solution or emulsion of a repellent substance is applied to the surface of the substrate to form a waterproofing film in advance, or a waterproofing film is formed on the surface of the substrate. A binder consisting of a mixture of portland cement and alumina cement and gypsum or lime, aggregate, synthetic resin, synthetic rubber, water-soluble polymer,
A mixed coating material prepared by mixing water and a binding material containing a solution or emulsion of a pollutant is applied in layers to form a coating layer, and then the coating layer is dried and solidified. A method for manufacturing a base material for construction, which is characterized by: [2] The method according to claim 1, characterized in that alumina cement is blended at a ratio of 10 to 90 parts by weight to 90 to 10 parts by weight of Portland cement in the binder. A manufacturing method for architectural base materials. [3] In the method according to claim 1 or 2, 1 to 40 parts by weight of gypsum or lime is added to 100 parts by weight of the total amount of Portland cement and alumina cement in the binder. A method for manufacturing a base material for construction, characterized in that it is blended in a proportion. [4] In the method according to any one of claims 1 to 3, the total amount of the binder is 101 to 140%.
A method for producing a base material for construction, characterized in that aggregate is blended at a ratio of 10 to 500 parts by weight to parts by weight. [5] In the method according to any one of claims 1 to 4, the total amount of the binder is 101 to 140
A method for manufacturing a base material for construction, characterized in that the above-mentioned caking agent is blended at a ratio of 5 to 100 parts by weight based on parts by weight. [6] The method according to any one of claims 1 to 5, wherein the coating layer is dried by heating at 100°C or higher. Manufacturing method of wood. [7] In the method according to any one of claims 1 to 6, the method includes adding to the mixed coating material a setting retarder whose setting retarding effect disappears when heated. Characteristic manufacturing method for architectural base materials.