Mullite-based coating material for rocket launching pad and application of mullite-based coating material

A rocket launch, mullite-based technology, applied in the field of refractory materials, can solve the problems of heavy weight, inability to move the launch platform, thick thickness, etc., to achieve reduced porosity, good resistance to rocket tail flame simulation gas flow erosion, The effect of increasing bulk density

Inactive Publication Date: 2016-10-05
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 kind of launch platform constructed entirely of ino

Method used

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  • Mullite-based coating material for rocket launching pad and application of mullite-based coating material
  • Mullite-based coating material for rocket launching pad and application of mullite-based coating material
  • Mullite-based coating material for rocket launching pad and application of mullite-based coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Take by weight ratio mullite with a particle size of 5-3mm, 26 parts; mullite with a particle size of 3-1mm, 26 parts; cordierite particles with a particle size of 0.5-1mm, 24 parts; Secar71 cement, 20 parts; 970 type silica fume, 4 parts; water, 13 parts (additional).

Embodiment 2

[0028] Example 2 Weigh 24 parts of mullite with a particle size of 5-3mm according to the weight ratio; 26 parts of mullite with a particle size of 3-1mm; 25 parts of cordierite particles with a particle size of 0.5-1mm; Secar71 cement, 19 parts; 970 type silica fume, 6 parts; water, 12.5 parts (additional).

Embodiment 3

[0029] Example 3 Take 28 parts of mullite with a particle size of 5-3mm according to the weight ratio; 28 parts of mullite with a particle size of 3-1mm; 19 parts of cordierite particles with a particle size of 0.5-1mm; Secar71 cement, 22 parts; 970 type silica fume, 3 parts; water, 14 parts (additional).

[0030] The preparation method of embodiment 1-3 is: take various raw materials according to the weight ratio, first add 5-3mm and 3-1mm mullite particles and 0.5-1mm cordierite particles and mix evenly, stir in the mixer for 2-3 Minutes, then add other powder and stir for 6-8 minutes. Finally, add water and stir for 3-5 minutes.

[0031] The mullite smear for the rocket launch pad prepared by adopting the above-mentioned raw material weight ratio and production method, the main aggregate uses raw materials of different particle size grades, wherein the raw materials with larger particle sizes play the role of skeleton, and the raw materials with smaller particle sizes play...

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Abstract

The invention discloses a mullite-based coating material for a rocket launching pad. The mullite-based coating material is prepared from mullite, cordierite, high-alumina cement and silica powder. The high-temperature combustion gas stream resistant mullite-based coating material for the rocket launching pad can protect a rocket launching pad metal structure against scouring and high-temperature ablation of high-temperature combustion gas streams, ensure reliability of working of the launching pad and prolong the service life of the launching pad. The mullite-based coating material for the rocket launching pad is applicable to high-humidity, high-salt-mist and high-ultraviolet-irradiation environments, is good in anti-corrosion performance and meets requirements for protecting the base body protection material of the rocket launching pad when the rocket launching pad is developed in coastal regions where transportation and launching are more convenient. The mullite-based coating material construction is easy and convenient. Raw materials for the mullite-based coating material are free of poison and corrosion, have the advantages of saving energy and being environmentally friendly and play an important role in improvement and protection of the environment.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a mullite-based smear material for a rocket launch platform and its application. Background technique [0002] With the development of spaceflight and aerospace industry, in addition to thermal protection for the aircraft itself, thermal protection measures have also been added to ground facilities such as rocket launch pads in China. In foreign countries, the Ariane rocket launch platform of the European Space Agency in Guyana, South America is a concrete launch platform. This kind of launch platform constructed entirely of inorganic non-metallic materials has better gas purging and ablation resistance than organic ablation coatings, but the disadvantage is the thickness. Thick, heavy, and the launch pad cannot be moved. The base material of the rocket launch pad is metal or metal alloy material. In order to protect the base material of the rocket launch pad from t...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B14/04
Inventor 张巍马磊王国鹏王晓东张涛
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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