The structure and application of a thermal protection coating for steel structure surface

A thermal protection and coating technology, applied in the direction of layered products, synthetic resin layered products, chemical instruments and methods, etc., can solve the problems of heavy weight, thick thickness, and no relevant reports on the launch pad, so as to reduce thermal burns. effect of corrosion and thermal shock, back temperature reduction, good thermal insulation

Active Publication Date: 2017-01-11
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In foreign countries, the Ariane rocket launch platform of the European Space Agency in Guyana, South America is a concrete launch platform. This type of launch platform constructed of inorganic non-metallic materials has better gas purging and ablation resistance than organic ablation coatings, but the disadvantage is that it is thick. , heavy, and the launch pad cannot be moved
[0003] The rocket launch pad can be thermally protected by using special thermal protection coating materials and structures, but at present, there are no relevant reports on the technology of thermal protection for the launch pad

Method used

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  • The structure and application of a thermal protection coating for steel structure surface
  • The structure and application of a thermal protection coating for steel structure surface

Examples

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Embodiment 1

[0018] The preparation of embodiment 1 thermal protective coating structure

[0019] 1. Preparation of organic bottom layer: mix epoxy resin SM828, curing agent polyamide 650, and toughening agent liquid rubber according to the mass ratio of 7:2:1, and then coat the rust-removed 190×120×5mm steel plate On the side surfaces, the coating thickness was 2 mm.

[0020] 2. Preparation of the middle layer: Clay refractory bricks (NZ)-2 with a thickness of 5 mm were pasted on the organic bottom layer.

[0021] 3. Preparation of inorganic surface layer: Firstly, mix the filler sand and cement evenly according to the mass ratio of 2:1, and then add the refractory aggregate to water glass (M=3) and the curing agent sodium fluorosilicate according to the mass ratio of 10:1 In the proportion of the mixed solution, the mass ratio of filler sand and cement: refractory aggregate: water glass (including curing agent) = 1:1:1. Coat the surface layer material on the refractory brick with a coa...

Embodiment 2

[0024] The preparation of embodiment 2 thermal protection coating structure

[0025] 1. Preparation of organic bottom layer: mix epoxy resin SM828, curing agent polyamide 650, and toughening agent liquid rubber according to the mass ratio of 7:2:1, and then coat the rust-removed 190×120×5mm steel plate On the side surfaces, the coating thickness was 4 mm.

[0026] 2. Preparation of the middle layer: Paste the clay refractory brick (NZ)-2 with a thickness of 15mm on the organic bottom layer.

[0027] 3. Preparation of inorganic surface layer: Firstly, mix the filler sand and cement evenly according to the mass ratio of 2:1, and then add the refractory aggregate to water glass (M=3) and the curing agent sodium fluorosilicate according to the mass ratio of 10:1 In the proportion of the mixed solution, the mass ratio of filler sand and cement: refractory aggregate: water glass (including curing agent) = 1:1:1. Coat the surface layer material on the refractory brick with a coatin...

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Abstract

The invention discloses the structure and application of a heat protection coating material for steel structure surface. The thermal protective coating material of the invention is composed of three layers of materials: an organic bottom layer, a refractory brick and an inorganic surface layer. Among them, the organic bottom layer is composed of epoxy resin, curing agent polyamide and toughening agent liquid rubber. The refractory brick is made of clay refractory brick, and the inorganic surface layer is composed of water glass, curing agent sodium fluorosilicate, sand, cement and refractory aggregate. The heat protection coating material of the invention can withstand the scouring of simulated rocket gas flow, the temperature of the metal back does not exceed 150 DEG C, and the coating has good heat insulation performance.

Description

technical field [0001] The invention relates to a heat protection coating structure for the surface of a steel structure, in particular to a heat protection coating structure used for coating the surface of a rocket launch pad to reduce the back temperature of the launch pad and protect the surface of the steel structure of the rocket launch pad. Its application belongs to the field of high temperature resistance and heat insulation protection. Background technique [0002] With the development of aerospace and aerospace industry, thermal protective coatings have opened up new application fields. In addition to the thermal protection of the aircraft itself, thermal protection measures have also been added to ground facilities such as rocket launch pads in China. If the launch pad is coated with thermal protective coatings, it can insulate the metal surface, reduce thermal ablation and thermal shock, and prevent the launch pad from thermal fatigue, thermal cracking and therm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/04B32B27/00
CPCB32B9/04B32B27/00B32B2307/304B32B2307/306
Inventor 张巍马磊王国鹏臧红张涛
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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