CN108503906B - Efficient blending method of nanoclay rubber - Google Patents
Efficient blending method of nanoclay rubber Download PDFInfo
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- CN108503906B CN108503906B CN201810696929.0A CN201810696929A CN108503906B CN 108503906 B CN108503906 B CN 108503906B CN 201810696929 A CN201810696929 A CN 201810696929A CN 108503906 B CN108503906 B CN 108503906B
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- nano clay
- nanoclay
- coagulating
- latex
- rubber
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- 239000012802 nanoclay Substances 0.000 title claims abstract description 109
- 238000002156 mixing Methods 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 27
- 229920001971 elastomer Polymers 0.000 title claims abstract description 21
- 239000004816 latex Substances 0.000 claims abstract description 59
- 229920000126 latex Polymers 0.000 claims abstract description 59
- 230000001112 coagulating effect Effects 0.000 claims abstract description 57
- 239000002253 acid Substances 0.000 claims abstract description 41
- 238000003756 stirring Methods 0.000 claims abstract description 21
- 230000015271 coagulation Effects 0.000 claims abstract description 7
- 238000005345 coagulation Methods 0.000 claims abstract description 7
- JUJWROOIHBZHMG-UHFFFAOYSA-N pyridine Substances C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 19
- 239000006185 dispersion Substances 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 14
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- 238000005086 pumping Methods 0.000 claims description 8
- 238000006053 organic reaction Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 7
- 239000003292 glue Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention provides a high-efficiency blending method of nanoclay rubber, which comprises the following steps: and (3) enabling the organically modified nano clay, the natural fresh latex and the coagulating acid to flow into a coagulating tank for coagulation. The invention adopts a three-phase blending method, and the organically modified nano clay is independently used as a phase, and flows into a coagulating tank together with natural fresh latex and coagulating acid, so that the working procedure is shortened, extra stirring is not needed during three-phase blending, the coagulating time is shortened, the production efficiency of the nano clay adhesive is greatly improved, the production cost is reduced, meanwhile, the nano clay is dispersed more uniformly, the product performance is improved, and especially the tensile strength, abrasion performance and tearing strength are improved.
Description
Technical Field
The invention relates to the technical field of nanoclay rubber, in particular to a high-efficiency blending method of nanoclay rubber.
Background
If the traditional process is adopted to prepare the nano clay glue, firstly, the nano clay is organically modified and then is blended and stirred with natural fresh latex, and then flows into a coagulation tank to be coagulated simultaneously with coagulating acid through two phases in parallel flow, and the production efficiency of the nano clay glue is lower due to the need of stirring firstly; but also can cause uneven dispersion of the nanoclay, resulting in unstable quality of the nanoclay gel product. Therefore, a method is needed to solve the above technical problems.
Disclosure of Invention
In view of the above, the invention provides a high-efficiency blending method for nanoclay rubber, which solves the above technical problems.
The technical scheme of the invention is realized as follows:
An efficient blending method of nanoclay rubber, comprising the steps of: and (3) enabling the organically modified nano clay, the natural fresh latex and the coagulating acid to flow into a coagulating tank for coagulation.
Further, the preparation of the organized and modified nano clay comprises the following steps: mixing and stirring the nano clay with water to form nano clay dispersion liquid, settling, pumping the upper dispersion liquid to an organic tank after settling, and carrying out organic reaction on the nano clay and the butadiene-pyridine latex to obtain the organically modified nano clay.
Further, the mass ratio of the nanoclay to the butadiene-pyridine latex is 5: (4-5).
Further, the mass ratio of the nano clay to the natural fresh latex to the coagulating acid is 5: (100-110): (30-45), wherein the natural fresh latex is calculated as dry gel.
Further, the nanoclay dispersion is formulated at a nanoclay mass concentration of 7 to 10%.
Further, the mass concentration of the coagulating acid is 8 to 10%.
Further, the stirring speed is 1200-1400 rpm, and the stirring time is 0.5-2 h.
Further, the coagulating acid is one of formic acid solution, acetic acid solution and sulfuric acid solution.
Further, the solidification environment temperature is 25-35 ℃.
Further, the coagulating tank is provided with a mixing cavity, the organized and modified nano clay, the natural fresh latex and the coagulating acid are respectively conveyed to the mixing cavity through pipelines, the transverse parts of the pipelines are higher than the top of the mixing cavity, the tail ends of the pipelines are provided with drainage pipes, the tail ends of the drainage pipes extend into the mixing cavity, and the drainage pipes face the same center.
Compared with the prior art, the invention has the beneficial effects that:
The invention adopts a three-phase blending method, and the organized and modified nano clay is independently used as a phase, and flows into a coagulating tank together with natural fresh latex and coagulating acid, so that the working procedure is shortened, extra stirring is not needed during three-phase blending, the coagulating time is shortened, the production efficiency of the nano clay glue is greatly improved, the production cost is reduced, meanwhile, the nano clay is dispersed more uniformly, the product performance is improved, and especially the tensile strength, abrasion performance and tearing strength are improved, and the stability of the nano clay glue product is improved.
Drawings
FIG. 1 is a schematic diagram of a nanoclay rubber high efficiency blending apparatus of the present invention;
FIG. 2 is a schematic flow chart of a method for efficient blending of nanoclay rubber according to the present invention;
In the figure, a mixing tank 1, an organic tank 2, a latex tank 3, an acid tank 4, a solidification tank 5, a tank channel 501, a switching valve 6, a mixing cavity 7, a pipeline 8, a transverse part 801, a drainage tube 9 and a metering pump 10.
Detailed Description
In order to better understand the technical content of the present invention, the following provides specific examples to further illustrate the present invention.
As shown in figure 1, the efficient nano clay rubber blending device comprises a mixing tank 1, an organic tank 2, a latex tank 3, an acid tank 4 and a coagulating tank 5, wherein the mixing tank 1 is used for mixing and stirring nano clay with water to prepare nano clay dispersion liquid, a modifier is arranged in the organic tank 2 and is used for carrying out an organic reaction with the nano clay to prepare modified nano clay, natural fresh latex is arranged in the latex tank 3, and coagulating acid is arranged in the acid tank 4; the mixing tank 1 is communicated with the organic tank 2; the solidification tank 5 is provided with a mixing cavity 7, and the organic tank 2, the latex tank 3 and the acid tank 4 are respectively communicated with the mixing cavity 7 through a pipeline 8; the lateral portion 801 of the duct 8 is higher than the top of the mixing chamber 7; the pipeline 8 is provided with a switch valve 6, the tail end of the pipeline 8 is provided with a drainage tube 9, and the tail end of the drainage tube 9 extends into the mixing cavity 7. According to the invention, three phases are simultaneously blended, so that the mixing effect and the mixing efficiency of the nanoclay rubber are improved, wherein the three phases are conveyed by utilizing pressure difference, pumping is not needed, blocking is avoided, pump corrosion and the like are avoided, so that the three phases of the organically modified nanoclay in the organic tank 2, the natural fresh latex in the latex tank 3 and the coagulating acid in the acid tank 4 are better converged to one place for mixing, the three phases are better mutually impacted and mixed, and then enter the channel 501 of the coagulating tank 5, the mixing effect is improved, and the mixing efficiency is improved. The drainage tube 9 faces the same center, so that the three-phase impact effect is further improved, and the mixing effect is further improved. The on-off valve 6 is a flow control valve, so that the delivery quantity of three phases is better controlled, and the stability of the product performance is better controlled. A metering pump 10 is arranged between the mixing tank 1 and the organic tank 2, so that the mixed nano clay is better quantitatively pumped into the organic tank 2, and the reaction of the nano clay is better controlled. The transverse part 801 of the pipeline 8 is inclined at an angle of 15-60 degrees, so that the three phases of the organized and modified nano clay in the organized tank 2, the natural fresh latex in the latex tank 3 and the coagulating acid in the acid tank 4 are better and downstream, and the mixing effect is better.
The working principle is as follows: as shown in fig. 2, the nanoclay and water are mixed and stirred in a mixing tank 1 to form nanoclay dispersion liquid, sedimentation is carried out in the mixing tank 1, the upper dispersion liquid is pumped to an organic tank 2 internally provided with the butadiene-pyridine latex after sedimentation, and the nanoclay and the butadiene-pyridine latex carry out an organic reaction to obtain the organically modified nanoclay; the organically modified nano clay, the natural fresh latex and the coagulating acid simultaneously flow into the mixing cavity 7 of the coagulating tank 5 to be mixed, and then enter the channel 501 of the coagulating tank 5 to be coagulated, so that the organically modified nano clay, the natural fresh latex and the coagulating acid are directly blended, pumping is not needed, blockage is avoided, pump corrosion and the like are avoided, the three phases are better mixed with each other, the mixing effect is improved, and the mixing efficiency is improved.
The following examples were carried out using the above apparatus:
Example 1
An efficient blending method of nanoclay rubber, comprising the steps of:
(1) Preparing the organized modified nano clay: preparing materials according to the mass concentration of 7% of the nanoclay, mixing and stirring the nanoclay and water, stirring for 2 hours under the condition of the stirring rotation speed of 1200rpm to form a nanoclay dispersion liquid, settling, pumping the upper dispersion liquid to an organic tank internally provided with the butadiene-pyridine latex after settling, and carrying out an organic reaction on the nanoclay and the butadiene-pyridine latex, wherein the mass ratio of the nanoclay to the butadiene-pyridine latex is 5:4, obtaining the organized and modified nano clay;
(2) Three-phase blending: the organized and modified nano clay, natural fresh latex and coagulating acid simultaneously flow into a coagulating tank, are mixed in a three-phase collision way, and wait for coagulation under the condition that the ambient temperature is 25-35 ℃, wherein the coagulating acid is formic acid solution with the mass concentration of 8%, and the mass ratio of the nano clay to the natural fresh latex to the coagulating acid is 5:100: (32-35), wherein the natural fresh latex is calculated as dry gel.
Example 2
An efficient blending method of nanoclay rubber, comprising the steps of:
(1) Preparing the organized modified nano clay: preparing materials according to the mass concentration of 7-10% of the nanoclay, mixing and stirring the nanoclay and water, stirring for 0.5-2 hours under the condition of the stirring rotation speed of 1200-1400 rpm to form a nanoclay dispersion liquid, settling, pumping the upper dispersion liquid into an organic tank internally provided with the butadiene-pyridine latex after settling, and carrying out an organic reaction on the nanoclay and the butadiene-pyridine latex, wherein the mass ratio of the nanoclay to the butadiene-pyridine latex is 5: (4-5) obtaining the organically modified nano clay;
(2) Three-phase blending: the organized and modified nano clay, natural fresh latex and coagulating acid simultaneously flow into a coagulating tank, are mixed in a three-phase collision way, and wait for coagulation under the condition that the ambient temperature is 25-35 ℃, wherein the coagulating acid is sulfuric acid solution with the mass concentration of 10%, and the mass ratio of the nano clay to the natural fresh latex to the coagulating acid is 5: (100-110): (30-32), wherein the natural fresh latex is calculated as dry gel.
Example 3
An efficient blending method of nanoclay rubber, comprising the steps of:
(1) Preparing the organized modified nano clay: preparing materials according to the mass concentration of 8% of the nanoclay, mixing and stirring the nanoclay and water, stirring for 1h under the condition of the stirring rotating speed of 1300rpm to form a nanoclay dispersion liquid, settling, pumping the upper dispersion liquid to an organic tank internally provided with the butadiene-pyridine latex after settling, and carrying out an organic reaction on the nanoclay and the butadiene-pyridine latex, wherein the mass ratio of the nanoclay to the butadiene-pyridine latex is 5:4, obtaining the organized and modified nano clay;
(2) Three-phase blending: the organic modified nano clay, natural fresh latex and coagulating acid simultaneously flow into a coagulating tank, three phases are collided and mixed, the mixture is waited for coagulating at the temperature of 25-35 ℃, the nano clay gel is obtained after complete coagulating, the coagulating acid is acetic acid solution with the mass concentration of 8%, and the mass ratio of the nano clay to the natural fresh latex to the coagulating acid is 5:100: (39-42) the natural fresh latex is calculated as dry gel;
Wherein, the coagulating tank is equipped with the mixing chamber, and the nanoclay after the organic modification is with natural fresh latex, coagulating acid respectively through pipeline transport to the mixing chamber, the position that the pipeline was laid is higher than the top of mixing chamber, the end of three pipeline all is equipped with the drainage tube, and three drainage tube orientation is same center, utilizes pressure differential to make the nanoclay after the organic modification directly blend with natural fresh latex, coagulating acid three-phase, need not the pumping, avoids blockking up, avoids taking place pump corrosion etc. in addition, combines the drainage tube, makes the better mutual striking of three-phase mix, further improves its mixing effect, improves its mixing efficiency.
Example 4
This example differs from example 3 in that the mass ratio of nanoclay to butadiene-pyridine latex is 5:6.
Example 5
The difference between this example and example 3 is that the mass ratio of the nanoclay to natural fresh latex to coagulated acid is 5:120:50, wherein the natural fresh latex is calculated as dry glue.
Example 6
This example differs from example 3 in that the solidification ambient temperature is 15 to 20 ℃.
Comparative example 1
An efficient blending method of nanoclay rubber, comprising the steps of:
(1) The formulation of the organized modified nanoclay was consistent with example 3;
(2) Blending: blending and stirring the organic modified nano clay and natural fresh latex, and then co-flowing with coagulating acid and two phases, simultaneously flowing into a coagulating tank, waiting for coagulation at the temperature of 25-35 ℃, and completely coagulating to obtain the nano clay gel, wherein the coagulating acid is acetic acid with the mass concentration of 8%, and the mass ratio of the nano clay to the natural fresh latex to the coagulating acid is 5:100: in (39-42), the natural fresh latex is calculated as a dry gel.
The nanoclays prepared by blending the invention examples 1-6 and comparative example 1 were tested for quality as follows:
The results show that the three-phase blending method shortens the solidification time, improves the production efficiency, reduces the production cost, and improves the product performance, in particular the tensile strength, the abrasion performance and the tearing strength.
In summary, the invention adopts a three-phase blending method, the organically modified nano clay is independently used as a phase, and flows into a coagulating tank together with natural fresh latex and coagulating acid, so that the working procedure is shortened, extra stirring is not needed during three-phase blending, the coagulating time is shortened, the production efficiency of the nano clay adhesive is greatly improved, the production cost is reduced, meanwhile, the nano clay is dispersed more uniformly, the product performance is improved, and especially the tensile strength, the abrasion performance and the tearing strength are improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. A high-efficiency blending method of nanoclay rubber is characterized in that: the method comprises the following steps: the nano clay organically modified by the butadiene-pyridine latex, the natural fresh latex and coagulating acid flow into a coagulating tank for coagulation at the same time;
The coagulating tank is provided with a mixing cavity, the organized and modified nano clay, natural fresh latex and coagulating acid are respectively conveyed to the mixing cavity through pipelines, the transverse parts of the pipelines are higher than the top of the mixing cavity, the tail ends of the pipelines are provided with drainage pipes, the tail ends of the drainage pipes extend into the mixing cavity, and the drainage pipes face the same center;
the mass ratio of the nanoclay to the butadiene-pyridine latex is 5: (4-5); the mass ratio of the nano clay to the natural fresh latex after the organic modification of the butadiene-pyridine latex to the coagulating acid is 5: (100-110): (30-45), wherein the natural fresh latex is calculated as dry gel.
2. The efficient blending method of the nanoclay rubber as claimed in claim 1, wherein: preparing the organized and modified nano clay of the butadiene-pyridine latex: mixing and stirring the nano clay with water to form nano clay dispersion liquid, settling, pumping the upper dispersion liquid to an organic tank after settling, and carrying out organic reaction on the nano clay and the butadiene-pyridine latex to obtain the organically modified nano clay.
3. A method of efficiently blending nanoclay rubber as recited in claim 2 wherein: the nano clay dispersion liquid is prepared according to the mass concentration of 7-10% of nano clay.
4. A method of efficiently blending nanoclay rubber as recited in claim 2 wherein: the stirring speed is 1200-1400 rpm, and the stirring time is 0.5-2 h.
5. The efficient blending method of the nanoclay rubber as claimed in claim 1, wherein: the coagulating acid is one of formic acid solution, acetic acid solution and sulfuric acid solution; the mass concentration of the coagulating acid is 8-10%.
6. The efficient blending method of the nanoclay rubber as claimed in claim 1, wherein: the solidification environment temperature is 25-35 ℃.
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| CN201810696929.0A CN108503906B (en) | 2018-06-29 | 2018-06-29 | Efficient blending method of nanoclay rubber |
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| CN108503906B true CN108503906B (en) | 2024-05-14 |
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| CN101981092A (en) * | 2008-02-08 | 2011-02-23 | 卡伯特公司 | Elastomeric composites and methods of making the same |
| CN202322687U (en) * | 2011-11-10 | 2012-07-11 | 中国热带农业科学院农产品加工研究所 | Device for solidifying natural rubber fresh latex by adding solidification liquid through hybrid conveying type double parallel flow |
| CN102634083A (en) * | 2011-12-27 | 2012-08-15 | 确成硅化学股份有限公司 | Method for blending natural latex and silica slurry |
| CN104072789A (en) * | 2014-07-20 | 2014-10-01 | 北京化工大学 | Wet process mixing method |
| CN104151651A (en) * | 2014-07-27 | 2014-11-19 | 北京化工大学 | Preparation method of rubber/clay composite material with thermo-oxidative aging resistance |
| CN105348572A (en) * | 2015-08-28 | 2016-02-24 | 中科纳达控股股份有限公司 | Application method for illite smectite clay in rubber |
-
2018
- 2018-06-29 CN CN201810696929.0A patent/CN108503906B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101981092A (en) * | 2008-02-08 | 2011-02-23 | 卡伯特公司 | Elastomeric composites and methods of making the same |
| CN202322687U (en) * | 2011-11-10 | 2012-07-11 | 中国热带农业科学院农产品加工研究所 | Device for solidifying natural rubber fresh latex by adding solidification liquid through hybrid conveying type double parallel flow |
| CN102634083A (en) * | 2011-12-27 | 2012-08-15 | 确成硅化学股份有限公司 | Method for blending natural latex and silica slurry |
| CN104072789A (en) * | 2014-07-20 | 2014-10-01 | 北京化工大学 | Wet process mixing method |
| CN104151651A (en) * | 2014-07-27 | 2014-11-19 | 北京化工大学 | Preparation method of rubber/clay composite material with thermo-oxidative aging resistance |
| CN105348572A (en) * | 2015-08-28 | 2016-02-24 | 中科纳达控股股份有限公司 | Application method for illite smectite clay in rubber |
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