Non-ablative external thermal insulation coating, and preparation method and using method thereof

A thermal insulation coating, non-burning technology, applied in the coating and other directions, to achieve the effect of high compressive strength, excellent thermal insulation effect, high specific surface area

Inactive Publication Date: 2019-09-06
BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a non-ablative external heat-insulating coating and its preparation method and application method, so as to solve the heat insulation and construction process problems of aircraft in a specific flight environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] A method for preparing a non-ablative external heat-insulating coating, characterized in that it comprises the following steps,

[0029] In the first step, put hollow boric acid microspheres, hollow ceramic microspheres, hollow phenolic microspheres and melamine into an oven at 80°C and bake for more than 4 hours;

[0030] In the second step, weigh hollow boric acid microspheres, hollow ceramic microspheres, hollow phenolic microspheres and melamine according to the mass ratio of 15-18 parts, 10-12 parts, 7-10 parts, and 3-5 parts and mix them Uniform;

[0031] The third step is to weigh 60-65 parts by mass of the modified silicone resin for use;

[0032] The fourth step is to add the dried powder to the modified silicone resin, add a small amount of acetone several times and keep stirring and kneading to a uniform state to make a semi-finished coating;

[0033] The fifth step is to pass the semi-finished paint above through a 100-mesh sieve, and grind and pulverize t...

Embodiment 1

[0054] A non-ablative external heat-insulating coating, which is composed of modified silicone resin, hollow boric acid microspheres, hollow ceramic microspheres, hollow phenolic microspheres, melamine and acetone, the mass ratio of which is 60 parts: 18 parts: 12 parts respectively : 7 parts: 3 parts: 20 parts, the method of its preparation is:

[0055] In the first step, put hollow boric acid microspheres, hollow ceramic microspheres, hollow phenolic microspheres and melamine into an oven at 80°C and bake for 4.5 hours;

[0056] In the second step, weigh hollow boric acid microspheres, hollow ceramic microspheres, hollow phenolic microspheres and melamine according to the mass ratio of 18 parts: 12 parts: 7 parts: 3 parts and mix them uniformly;

[0057] The third step weighs 60 parts by mass of modified silicone resin;

[0058] The fourth step is to add the dried powder to the modified silicone resin, add a small amount of acetone several times and keep stirring and kneadi...

Embodiment 2

[0064] A non-ablative external heat-insulating coating, composed of modified silicone resin, hollow boric acid microspheres, hollow ceramic microspheres, hollow phenolic microspheres, melamine and acetone, the mass ratio of which is 65 parts: 15 parts: 10 parts respectively : 7 parts: 3 parts: 22 parts, the method of its preparation is:

[0065] In the first step, put hollow boric acid microspheres, hollow ceramic microspheres, hollow phenolic microspheres and melamine into an oven at 80°C and bake for more than 6 hours;

[0066] In the second step, weigh hollow boric acid microspheres, hollow ceramic microspheres, hollow phenolic microspheres and melamine according to the mass ratio of 15 parts: 10 parts: 7 parts: 3 parts and mix them evenly;

[0067] The third step weighs 65 parts by mass of modified silicone resin;

[0068] The fourth step is to add the dried powder to the modified silicone resin, add a small amount of acetone several times and keep stirring and kneading t...

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Abstract

A non-ablative external thermal insulation coating comprises, by mass, 60-65 parts of modified silicone resin, 15-18 parts of hollow boric acid microspheres, 10-12 parts of hollow ceramic microspheres, 7-10 parts of hollow phenolic microspheres, 3-5 parts of melamine and 20-30 parts of acetone. The non-ablative external thermal insulation coating has a high specific surface area and a high compressive strength, and has stable performances and no physical or chemical change at a high temperature. The temperature resistance of the three hollow fillers and the diameters of the microspheres have certain gradient change.

Description

technical field [0001] The invention relates to a non-ablative external heat-insulating paint and its preparation method and application method, and relates to a heat-insulating paint and its application, in particular to a non-ablative external heat-insulating coating capable of withstanding 300°C high-speed aerodynamic heat erosion. Thermal coatings and their applications. Background technique [0002] For some aircraft, the temperature inside the launch container can reach 60°C under extreme conditions such as deserts and direct sunlight. Coupled with the effect of aerodynamic heat during flight, the wall temperature of the external fairing of the aircraft will reach 300°C, while the cables inside the fairing are mostly made of PVC, and the long-term working temperature is only 70°C. Therefore, in order to ensure the safe flight of the aircraft, it is necessary to take heat insulation measures for the fairing to improve the reliability of the internal cables. A certain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D7/61C09D7/65C09D7/63
CPCC08K2201/014C08L2205/16C09D7/61C09D7/63C09D7/65C09D7/70C09D183/04C08L61/06C08K7/24C08K5/34922
Inventor 李盼盼乔懿元陈纲
Owner BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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