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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 field of materials, can solve the problem that the comprehensive performance index is difficult to meet the strict requirements of aviation and single, and achieve the effect of excellent comprehensive performance index, low thermal conductivity and strong bonding ability.

Active Publication Date: 2015-03-11
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 high-temperature-resistant heat-insulating coating, the raw materials of which are composed of: 25 parts of epoxy resin modified silicone resin added with nanoparticles, 20 parts of polybenzimidazole, 8 parts of boron carbide, and 30 parts of hollow ceramic microspheres in parts by weight. Parts, 1.5 parts of amino polyhedral oligosilsesquioxane, 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 concrete steps of described coating comprise:

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

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

[0027] (3) Add toluene in proportion to the sieved raw materials and mix evenly to obtain the...

Embodiment 2

[0029] A high-temperature-resistant heat-insulating coating, the raw materials of which are composed of: 35 parts of epoxy resin modified silicone resin added with nanoparticles, 15 parts of polybenzimidazole, 5 parts of silicon carbide, 20 parts of mica powder, in parts by weight, 1 part of amino polyhedral oligosilsesquioxane, 5 parts of toluene.

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

[0031] The concrete steps of described coating comprise:

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

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

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

Embodiment 3

[0036] A high-temperature-resistant and heat-insulating coating, the raw materials of which are composed of: 30 parts of epoxy resin modified silicone resin added with nanoparticles, 10 parts of polybenzimidazole, 7 parts of boron nitride, and 28 parts of fly ash in parts by weight. 2 parts, 2 parts of amino polyhedral oligosilsesquioxane, 10 parts of solvent.

[0037] The nano particles are nano aluminum oxide, 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.

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

[0039] The concrete steps of described coating comprise:

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

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

[0042...

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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 in particular relates to a high-temperature-resistant heat-insulating coating and a preparation method thereof. Background technique [0002] One of the key factors for an aircraft to complete its mission safely and smoothly is the heat insulation of the aircraft. Because it faces a brutal high-temperature environment during flight, the aerodynamic heating of the surface will cause the aircraft to face rapid heating and thermal shock. Therefore, the development of burn resistance Coatings with excellent fire resistance and thermal insulation properties have become the focus of attention of aerospace agencies and experts. As the flight speed of aircraft becomes faster and faster, the further development of heat protection technology puts forward higher requirements for thermal protection coatings, that is, low density, high effective ablation heat, low thermal conductivity and good material ...

Claims

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Application Information

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Patent Type & Authority Patents(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