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Thermal insulation coating for buildings and preparation method of thermal insulation coating

A technology for thermal insulation coatings and construction, applied in fire-resistant coatings, epoxy resin coatings, coatings, etc., can solve the problems of poor high temperature resistance, coating peeling, restrictions, etc. The effect of good chemical temperature resistance and high temperature resistance

Inactive Publication Date: 2018-10-12
WUHU YUANKUI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing building thermal insulation coatings only play a role of thermal insulation, but for higher temperatures such as 400 ° C, its own high temperature resistance is poor, and the coating is prone to peeling off.
Therefore, the existing thermal insulation coatings for buildings restrict their application in the field of building energy conservation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of silicon nitride / epoxy resin is:

[0024] Add epoxy resin and silicon nitride to acetone, carry out ultrasonic dispersion to obtain a dispersion liquid, raise the temperature of the dispersion liquid to 78°C, then add vinyltrioxysilane, water and polyamide in sequence, stir evenly, and dry after the reaction That's it. The mass ratio of epoxy resin to silicon nitride is 6:1, the mass ratio of vinyltrioxysilane to epoxy resin is 1:25, and the mass ratio of polyamide to silicon nitride is 1:20.

[0025] Modified rutile titanium dioxide is prepared by the following method:

[0026] Add rutile titanium dioxide to acetone, then add titanate coupling agent and stir evenly, condense and reflux for 4 hours at a temperature of 60° C. to obtain a mixture, and filter, wash and dry the mixture to obtain modified rutile titanium dioxide.

Embodiment 2

[0028] The preparation method of silicon nitride / epoxy resin is:

[0029] Add epoxy resin and silicon nitride to acetone, carry out ultrasonic dispersion to obtain a dispersion liquid, raise the temperature of the dispersion liquid to 75-82°C, then add vinyltrioxysilane, water and polyamide in sequence, stir evenly, and the reaction ends Then dry it. The mass ratio of epoxy resin to silicon nitride is 8:1, the mass ratio of vinyltrioxysilane to epoxy resin is 1:15, and the mass ratio of polyamide to silicon nitride is 1:30.

[0030] Modified rutile titanium dioxide is prepared by the following method:

[0031] Add rutile titanium dioxide to acetone, then add titanate coupling agent and stir evenly, condense and reflux for 2 hours at a temperature of 80°C to obtain a mixture, filter, wash and dry the mixture to obtain modified rutile titanium dioxide.

Embodiment 3

[0033] A heat-insulating coating for buildings, calculated in parts by weight, comprising the following components:

[0034] 45 parts of acrylic emulsion, 30 parts of silicon nitride / epoxy resin, 15 parts of potassium hexatanate whiskers, 16 parts of modified rutile titanium dioxide, 2 parts of ammonium acrylate dispersant, 0.8 parts of tetrachloroisophthalonitrile, modified 6 parts of ammonium polyacrylate, 2 parts of mineral oil, 9 parts of propylene glycol ether and 50 parts of deionized water.

[0035] Preparation:

[0036] 1) Add ammonium acrylate dispersant, tetrachloroisophthalonitrile, and 1 / 2 mineral oil into deionized water according to the formula amount, and stir and mix thoroughly at a speed of 300r / min;

[0037] 2) In the mixture of step 1), add the modified rutile type titanium dioxide of embodiment 1 and potassium hexataftate whiskers and disperse at a rotating speed of 1000r / min;

[0038] 3) Add the mixture of acrylic emulsion and silicon nitride / epoxy resin...

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Abstract

The invention provides a thermal insulation coating for buildings and a preparation method of the thermal insulation coating. The thermal insulation coating is prepared from the following components in parts by weight: 40-50 parts of acrylic emulsion, 25-35 parts of silicon nitride / epoxy resin, 10-20 parts of modified rutile titanium dioxide, 5-15 parts of thermal insulation filler, 1-3 parts of awetting dispersant, 0.5-1 part of a mildew inhibitor, 4-8 parts of a thickening agent, 1-3 parts of a defoaming agent, 6-12 parts of a film forming aid and 40-60 parts of deionized water. The siliconnitride / epoxy resin is mainly prepared from epoxy resin, silicon nitride and vinyl trioxysilane. The coating not only has good thermal insulation effect, but also has low thermal conductivity and canbe applied to indoor thermal insulation.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a heat-insulating coating for buildings and a preparation method thereof. Background technique [0002] Thermal insulation coatings for buildings are new functional architectural coatings that have been used and paid attention to in recent years. In the hot summer and warm winter and hot summer and cold winter climate regions where the summer temperature is too high in our country, the coating not only has the decorative effect of ordinary exterior wall coatings, but also can reflect solar radiant heat to reduce the surface temperature of the coating film, and reduce the damage caused by summer coating. A series of problems caused by the high surface temperature of the membrane. Although a lot of researches have been done on thermal insulation coatings for buildings, there are still many problems in practical application, such as: unstable performance, although the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D163/00C09D7/62C09D7/61
CPCC08K2003/2241C08L2201/08C09D5/18C09D7/61C09D7/62C09D7/70C09D133/00C08L63/00C08K13/06C08K9/04C08K3/22C08K3/34C08K7/08
Inventor 章波郭元
Owner WUHU YUANKUI NEW MATERIAL TECH CO LTD
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