Experimental Investigation on Ablation Characteristic of EPDM Insulator in Different Gas Environments

王书贤; 何国强; 李江; 刘佩进

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Experimental Investigation on Ablation Characteristic of EPDM Insulator in Different Gas Environments

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Some ablation experiments of Ethylene-Propylene-Diene Monomer(EPDM)insulator were carried out in quasi-static low temperature gas environment,gas-phase environment,two-phase environment with Al2O3 grain and high concentration Al2O3 grain gas environments.Their charring ablation rate,thickness,surface morphology and main ingredient of the charring layer were analyzed.The experiment results show that the main influent factors for the charring ablation rate are the gas temperature,grain concentration and state of grain impact;the main influent factors for the charring layer thickness are the gas velocity and environment pressure;and the process of SiO2 migrating in the charring layer occur commonly in different gas environments.They provide a foundation for the ablation mechanism research and modeling of EPDM insulator.

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《防务技术:英文版》 |2010年第2期|109-113|共5页
作者
王书贤; 何国强; 李江; 刘佩进;
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作者单位

National Key Laboratory of Combustion;

Flow and Thermal-structure;

Northwestern Polytechnical University;

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原文格式 PDF
正文语种 chi
中图分类 V435.6;
关键词
propulsion system of aviation and aerospace; EPDM insulator; experiment environment; charring ablation rate; charring layer thickness; surface morphology; ingredient;

Experimental Investigation on Ablation Characteristic of EPDM Insulator in Different Gas Environments

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