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Thermal insulation felt with thermal shock resistance and preparation method thereof

A technology of impact performance and thermal insulation felt, which is applied in pharmaceutical formulations, transportation and packaging, textiles and papermaking, etc., can solve the problems of easy damage to the structure of aerogel felt, weak thermal shock resistance of thermal insulation felt, and reduced thermal insulation and protection effect. , to achieve the effects of excellent thermal insulation performance and mechanical properties, excellent thermal insulation performance, and excellent thermal shock performance.

Pending Publication Date: 2022-05-06
SHANGHAI GUOBO NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal shock resistance of the thermal insulation felt with the above-mentioned composite structure is weak. After the thermal insulation felt is subjected to severe temperature changes or alternates between cold and heat within a certain initial temperature range, the structure of the airgel felt and the polyethylene layer are prone to damage. damage, which in turn leads to a significant reduction in its thermal insulation protection effect, so it is necessary to regularly check or replace the thermal insulation blanket, which brings great inconvenience to users
[0004] To sum up, although the current thermal insulation blanket has a good thermal insulation protection function, its thermal shock resistance is poor.

Method used

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  • Thermal insulation felt with thermal shock resistance and preparation method thereof
  • Thermal insulation felt with thermal shock resistance and preparation method thereof
  • Thermal insulation felt with thermal shock resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] A heat-shock-resistant thermal insulation felt, which is composed of a glass fiber layer with filler and a thermal shock-resistant coating coated on both sides of the glass fiber layer with filler;

[0065] The filler is hollow glass microspheres with a particle size of 50 μm, and the composition and content of the raw materials are as follows: 80% SiO 2 , 10%Al 2 o 3 , 10% ZrO 2 ;

[0066] The thermal shock-resistant coating is obtained by drying and curing the thermal shock-resistant coating on both sides of the glass fiber layer with fillers;

[0067] Thermal shock-resistant coatings, calculated by weight percentage, its raw material composition and content are as follows: 25% SiO 2 , 30% ZnO, 5% Al 2 o 3 , 5% PTFE, 15% silane coupling agent, 20% phosphate;

[0068] Among them, the silane coupling agent is KH-550, and the phosphate is dihydrogen phosphate.

[0069] The preparation method of the above-mentioned thermal shock-resistant thermal insulation felt s...

Embodiment 2-8

[0079] A thermal shock-resistant thermal insulation felt, the difference from Example 1 is that the components and corresponding weights of the thermal shock-resistant coating are different, as shown in Table 1 in terms of 100kg, and the others are the same as in Example 1 same.

[0080] Table 1: Each component and corresponding weight (kg) of thermal shock-resistant coating in embodiment 1-6

[0081]

[0082]

Embodiment 9

[0107] A thermal shock-resistant thermal insulation blanket, except that the thermal shock-resistant coating is only coated on one side of the glass fiber layer with fillers, the others are the same as in Example 1.

[0108] Carry out performance test to the thermal insulation blanket gained in above-mentioned embodiment 9, test its thermal insulation performance and thermal shock resistance performance respectively, the average value of the measurement results is recorded in the following table:

[0109]

[0110]

[0111] It can be seen from the above table that the thermal insulation blanket obtained in Example 9 still has excellent thermal insulation performance and thermal shock resistance, and its thermal conductivity at 25°C is only 0.038W / (K m), which is lower than that in the implementation. Example 1 only decreased by 0.003W / (K m), and the damage time at 1000°C and 5Bar pressure was as long as 75min, which was only 10min shorter than that of Example 1;

[0112] ...

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Abstract

The invention relates to a thermal insulation felt with thermal shock resistance and a preparation method thereof. The heat preservation felt is of a layered structure and is composed of a glass fiber layer with filler and a heat shock resistant coating, and the heat shock resistant coating is coated on one side or two sides of the glass fiber layer with the filler. The filler is a hollow glass bead or aerogel SiO2; the heat-impact-resistant coating is obtained by coating one side or two sides of the glass fiber layer with the filler with a heat-impact-resistant coating and then drying and curing the heat-impact-resistant coating; the heat shock resistant coating is prepared from the following raw materials in percentage by weight: 10 to 50 percent of SiO2, 5 to 60 percent of ZnO, 5 to 40 percent of Al2O3, 5 to 15 percent of polytetrafluoroethylene, 5 to 35 percent of silane coupling agent and 15 to 50 percent of phosphate. After the glass fiber layer is filled with the filler and coated with the heat-impact-resistant coating, the heat-insulation felt prepared in the invention has more excellent heat-impact-resistant performance.

Description

technical field [0001] The application relates to the technical field of thermal insulation materials, more specifically, it relates to a thermal shock resistant thermal insulation blanket and a preparation method thereof. Background technique [0002] Electric vehicle (BEV) refers to the use of vehicle-mounted power supply as power, the motor drives the wheels, and integrates the advanced technology of vehicle power control and drive to form a vehicle with advanced technical principles, new technologies and new structures. Due to its green The characteristics of environmental protection are also regarded as the development trend of the future automobile industry. The most important part of this type of car is its battery. insulation. [0003] In the related art, a thermal insulation felt is disclosed as a glass fiber felt composite material. The glass fiber felt composite material includes an airgel felt and a polyethylene layer, and the polyethylene layer is arranged betw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/04D06N3/00
CPCD06N3/047D06N3/0022D06N3/0011D06N3/0063D06N2209/067D06N2209/103D06N2209/065D06N2211/263D06N2211/18D06N2211/06
Inventor 梁振华孙永春卢巍郭圣陆旗玮严惊涛徐灵爽
Owner SHANGHAI GUOBO NEW ENERGY TECH CO LTD