Heat insulation phase change coating and preparation method thereof

A phase change coating, thermal insulation technology, applied in epoxy resin coatings, coatings, etc., to achieve the effect of easy construction, strong adhesion, and small volume change

Inactive Publication Date: 2014-03-19
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Preparation of thermal insulation phase change coating:

[0022] With 40g6101 epoxy resin as first component, 5g aluminum oxide powder, 5g perlite, 10g composite phase-change capsule, the weight ratio that composite phase-change capsule contains potassium nitrate, sodium nitrite, calcium chloride hexahydrate is 1:1: 8, and 40g polyamide resin is put into the beaker as component B and stirred evenly; Prepare heat-insulating and heat-preserving phase-change coating;

[0023] 2) Brushing experiment of thermal insulation phase change coating:

[0024] Apply the thermal insulation phase change coating evenly stirred in the previous step on the 2mm thick steel plate with a brush, and cure for 24 hours. According to relevant standards, the bonding strength with cement can reach 1MPa, and the bond strength with steel plate can reach 0.8MPa. It has good bonding strength when used on clean and dry surfaces. According to the GBT6739-2006 standard, its hardness is 3H. Test th...

Embodiment 2

[0025] Example 2 Weathering Experiment of Thermal Insulation Phase Change Coatings

[0026] Take 36g of 618 epoxy resin component A, 5g of titanium dioxide powder, 15g of glass beads, 5g of alum (potassium aluminum sulfate) and 4g of ethylenediamine as epoxy resin component B, put them into a flask and stir evenly, then add to the spray gun storage tank Spray on the stainless steel plate with a film thickness of about 0.5mm and cure for 48 hours.

[0027] After testing, the coating film has high acid and alkali resistance, and 98% sulfuric acid solution and 40% caustic soda solution do not react when dripped into the coating surface. The laboratory experiment proves that the 500-hour salt spray test is qualified. After 500 hours of ultraviolet irradiation, the color turns slightly yellow, without obvious chalking and embrittlement. The sample is tested for solar reflectance, and the total solar reflectance is 90%. After testing the thermal conductivity of the material, the ...

Embodiment 3

[0028] Example 3 Reflection experiment of thermal insulation phase change coating

[0029] 40g 601 epoxy resin component A, 25g lithopone, 10g indium tin oxide, 5g sodium sulfate decahydrate phase change capsule, 5g calcium carbonate, 3g thickener, 1g preservative, 0.5g leveling agent and 0.5g silver Put the pigment into the flask, and finally add 10g of phthalic anhydride as the second component of epoxy resin, stir evenly, and use a brush to paint on a galvanized steel plate with a thickness of 2mm, and the film thickness is about 0.3mm. After curing for 48 hours, the sample was tested for solar reflectance, and the total solar reflectance was 91%. Tested according to relevant standards, the bonding strength with cement can reach 1.5MPa, and with steel plate can reach 1MPa. It has good bonding strength when used on clean and dry surfaces. According to GBT6739-2006 standard, its hardness is 2H. After testing the thermal conductivity of the material, the thermal conductivit...

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Abstract

The invention discloses a heat insulation phase change coating. The coating comprises the following components in parts by weight: 40-80 parts of double-component epoxy resin, 5-35 parts of heat dissipation filler, 5-30 parts of filler with high heat resistance and 5-25 parts of a phase change material. The heat insulation coating disclosed by the invention has the characteristics of high heat reflectivity, high heat radiation, low heat conduction, heat absorption, storage and release in a certain temperature range, multiple effects, good effects of reflecting illumination, realizing heat insulation and reducing temperature, safety, environment-friendly effect, strong adhesion and convenience in construction. The invention further discloses a preparation method of the coating.

Description

technical field [0001] The invention relates to the technical field of thermal insulation coatings, in particular to a thermal insulation phase change coating and a preparation method thereof. Background technique [0002] Heat insulation coating is a functional coating developed in the 1980s with heat insulation, reflection, energy saving and environmental protection. The most widely used are silicate composite coatings, which are mainly made of hollow thermal insulation aggregates with low thermal conductivity, such as asbestos, stone borers, expanded perlite, etc., combined with inorganic and organic binders and other additives. Widely used in petrochemical industry, grain storage and other industries. Relevant data show that the energy consumption required to lower the temperature by 1°C is four times that required to increase the temperature by 1°C. In the case of increasingly serious energy crisis, thermal insulation coatings are of great significance to energy savin...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/12
Inventor 王凤奇张宝庆焦迎涛
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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