Heat-insulating nano-paint and preparation method thereof

A technology of nano-insulation and heat-insulating fillers, applied in fire-resistant coatings, epoxy resin coatings, reflective/signal coatings, etc., can solve problems such as poor high temperature resistance, paint peeling, and restrictions

Inactive Publication Date: 2018-10-19
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 nano thermal insulation coatings restrict its application in the field of building energy saving

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation method of silicon nitride / epoxy resin is:

[0022] 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.

Embodiment 2

[0024] The preparation method of silicon nitride / epoxy resin is:

[0025] 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.

Embodiment 3

[0027] A nano heat-insulating coating, calculated in parts by weight, comprises the following components:

[0028] 45 parts of acrylic emulsion, 30 parts of silicon nitride / epoxy resin, 15 parts of potassium hexatanate whiskers, 16 parts of silica airgel, 2 parts of ammonium acrylate dispersant, 0.8 parts of tetrachloroisophthalonitrile, 6 parts of modified ammonium polyacrylate, 2 parts of mineral oil, 9 parts of propylene glycol ether and 50 parts of deionized water.

[0029] Preparation:

[0030] 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;

[0031] 2) Add silica aerogel and potassium hexataftate whiskers to the mixture in step 1) and disperse at a rotating speed of 1000r / min;

[0032] 3) Add the mixture of acrylic emulsion and silicon nitride / epoxy resin, modified polyacrylic acid ammonium, propylene glycol ethyl ether and th...

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PUM

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Abstract

The invention provides heat-insulating nano-paint and a preparation method thereof. The heat-insulating nano-paint is prepared from in parts by weight, 40-50 parts of acrylic acid emulsion, 25-35 parts of silicon nitride / epoxy resin, 10-30 parts of silicon dioxide aerogel, 5-15 parts of heat-insulating fillers, 1-3 parts of wetting dispersants, 0.5-1 part of mildew preventive, 4-8 parts of thickening agents, 1-3 parts of defoaming agents, 6-12 parts of coalescing agents and 40-60 parts of deionized water. The silicon nitride / epoxy resin is mainly made from epoxy resin, silicon nitride and vinyltrioxosilane. The nano-paint has good heat insulation effect and low heat conductivity coefficient, and can be applied to indoor heat insulation.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a nano heat-insulating coating and a preparation method thereof. Background technique [0002] Nano thermal insulation coating is a new type of functional architectural coating that has been applied 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 there are many researches on nano heat-insulating coatings, there are still many problems in practical applications, such as: unstable performance, although the reflective heat-insulating co...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D163/00C09D7/61C09D5/33
CPCC08K2201/011C08L2201/08C09D5/004C09D5/18C09D7/61C09D7/70C09D133/00C08L63/00C08K3/34C08K7/08C08K7/26
Inventor 章波郭元
Owner WUHU YUANKUI NEW MATERIAL TECH CO LTD
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