摘要: |
在90℃的条件下,对TH-33防热涂层进行了前期加速热老化试验。试验以涂层的粘接剪切试样性能随老化时间变化为依据,以老化经验公式进行外推计算,结果表明,本试验共进行的10个老化周期下(240h),剪切试样性能没有明显的下降,保守计算,试样常温(20℃)室内贮存寿命至少为12年。 |
关键词: TH-33;防热涂层;热老化;剪切强度 |
基金项目: |
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Study on Thermal Aging Properties of Heat-resistant Coating |
Yan Weixing Zheng Pei Li Xiaofeng Zhou Yibo Ma Tianxin
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Xi’an Changfeng Research Institute of Mechanism and Electricity, Xi’an 710065
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Abstract: |
Basal accelerating tests of heat-protection coat of TH-33 were finished at 90℃, which are based on the change of shear strengths with aging time, according to aging experience formula. Tests results show that there are no evident reduction of shear strengths under the condition of 10 aging cycles. Storge life of the samples is at least 12 years at 20℃ by calculation. |
Key words: TH-33;heat-resistant coating;thermal aging;shear strength |