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High-temperature-resistant heat-insulation paint and preparation method thereof

A heat-insulating coating and high-temperature-resistant technology, applied in the material field, can solve the problem that a single and comprehensive performance index is difficult to meet the harsh requirements of aviation, and achieve the effect of excellent comprehensive performance index, strong impact resistance, and guaranteed strength and rigidity.

Active Publication Date: 2013-01-09
SHANDONG LIAOCHENG QILU SPECIAL PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, although there are many coatings in the prior art, most of them only have a single performance index that has reached a relatively high level, and the comprehensive performance index is still difficult to meet the stringent requirements of the aviation and aerospace fields.

Method used

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  • High-temperature-resistant heat-insulation paint and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A heat-resistant heat-insulating paint, based on parts by weight, whose raw materials are composed of 25 parts of epoxy resin modified silicone resin with nano particles, 20 parts of polybenzimidazole, 8 parts of boron carbide, and 30 parts of hollow ceramic beads. Parts, 1.5 parts of amino polyhedral oligomeric silsesquioxane and 27 parts of toluene.

[0023] The nano particles are nano titanium dioxide, and the weight ratio of the nano particles to the epoxy resin modified silicone resin is 1:9. The epoxy resin modified silicone resin is FJN-9803 epoxy modified silicone resin.

[0024] The specific steps of the coating include:

[0025] (1) Add other raw materials except toluene into the reaction kettle in proportion, and stir for 125min at a speed of 650r / min;

[0026] (2) Grind the above-mentioned uniformly mixed raw materials and pass through a 65-mesh sieve;

[0027] (3) Add toluene to the sieved raw materials in proportion to make the coating evenly.

Embodiment 2

[0029] A high-temperature heat-resistant heat-insulating paint, based on parts by weight, whose raw materials are composed of 35 parts of epoxy resin modified silicone resin with nano-particles, 15 parts of polybenzimidazole, 5 parts of silicon carbide, and 20 parts of mica powder. One part of amino polyhedral oligomeric silsesquioxane and 5 parts of toluene.

[0030] The nano particles are nano silica, and the weight ratio of the nano silica to the epoxy resin modified silicone resin is 1:6. The epoxy resin modified silicone resin is epoxy modified silicone resin SH-023.

[0031] The specific steps of the coating include:

[0032] (1) Add other raw materials except toluene into the reaction kettle in proportion, and stir for 100min at a speed of 550r / min;

[0033] (2) Grind the above-mentioned uniformly mixed raw materials and pass through a 68-mesh sieve;

[0034] (3) Add toluene to the sieved raw materials in proportion to make the coating evenly.

Embodiment 3

[0036] A high-temperature heat-resistant heat-insulating paint, in parts by weight, the raw material composition is: 30 parts of epoxy resin modified silicone resin with nano particles, 10 parts of polybenzimidazole, 7 parts of boron nitride, 28 parts of fly ash Parts, 2 parts of amino polyhedral oligomeric silsesquioxane, 10 parts of solvent.

[0037] The nano particles are nano aluminum oxide, and the weight ratio of the epoxy resin modified silicone resin is 1:9. The epoxy resin modified silicone resin is FJN-9803 epoxy modified silicone resin.

[0038] The solvent is a mixed solvent of toluene and xylene, and the mass ratio of the two is 1:1.

[0039] The specific steps of the coating include:

[0040] (1) Add other raw materials except the solvent into the reaction kettle in proportion, and stir for 150min at a speed of 600r / min;

[0041] (2) Grind the above-mentioned uniformly mixed raw materials and pass through a 70-mesh sieve;

[0042] (3) Add the solvent to the sieved raw mat...

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Abstract

The invention relates to high-temperature-resistant heat-insulation paint and a preparation method thereof and belongs to the technical field of materials. The paint is used for heat-insulation protection of spacecrafts. The paint comprises, by weight, 25-35 parts of epoxide resin modified organic silicon resin containing nano particles, 10-20 parts of polybenzimidazole, 5-10 parts of high-temperature-resistant inorganic nonmetal compounds, 20-30 parts of high-temperature-resistant fillers, 1-3 parts of curing agents and 5-27 parts of solvents. The paint is high-temperature resistant, low in thermal conduction, high in shock resistance, low in density, good in bonding capacity, good in comprehensive performance index and capable of guaranteeing strength and rigidity of structural materials under the high temperature condition and meeting harsh requirements of aviation and space fields.

Description

Technical field [0001] The invention belongs to the technical field of materials, and specifically relates to a high-temperature-resistant heat-insulating paint and a preparation method thereof. Background technique [0002] One of the key factors for the aircraft to complete the mission safely and smoothly is the aircraft’s thermal insulation. Due to the cruel high temperature environment during the flight, the aerodynamic heating of the surface will cause the aircraft to face rapid heating and thermal shock, so the development of resistance to heat Coatings with excellent burning and thermal insulation properties have become the focus of attention of aerospace institutions and experts. As aircraft flying faster and faster, the further development of thermal protection technology puts forward higher requirements for thermal protection coatings, namely low density, high effective ablation heat, low thermal conductivity and good material uniformity . [0003] At present, although ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/00C09D179/04C09D7/12C09D5/33
Inventor 王兴民庞天磊王福忠王从浩段洪东
Owner SHANDONG LIAOCHENG QILU SPECIAL PAINT
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