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| Verification and Analysis of YS10-021 Polyimide for Gas Turbine by Three Prevention Test |
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| DOI：10.7643/issn.1672-9242.2023.02.005 |
| KeyWord:YS10-021 polyimide damp heat test salt spray test fungus test physical properties aging law |
| Author | Institution |
| SHANG Xu-jing |
AECC Shenyang Engine Design Institute, Shenyang , China |
| HU Yan |
Qingdao Sushihaice Testing Technology Co., Ltd., Shandong Qingdao , China |
| YOU Bao-cai |
AECC Shenyang Engine Design Institute, Shenyang , China |
| WANG Yu |
AECC Shenyang Engine Design Institute, Shenyang , China |
| YANG Wen-xin |
Qingdao Sushihaice Testing Technology Co., Ltd., Shandong Qingdao , China |
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| Abstract: |
| The work aims to study the effects of damp heat, salt spray and fungus accelerated environment on physical properties of YS10-021 polyimide, so as to provide data support for material selection, design, service life determination and extension of gas turbine. The three prevention test of YS10-021 polyimide was designed and carried out to regularly test the physical properties of the sample after aging, and make statistical analysis on the test data. After 3 552 h damp heat test, the high temperature tensile strength and high temperature bending strength declined by 24%, which still fulfilled the requirements of the factory specifications. The bending strength at room temperature declined by 34% and the impact strength of the simply supported beam declined by 62%, which failed to meet the standard requirements. Other properties showed no significant aging. After 3 552 h salt spray test, the bending strength significantly declined by 30%, while other properties were within the range of the factory specifications. After 84 d fungus test, the physical properties of YS10-021 polyimide showed a slight downward trend, but the aging was not significant. YS10-021 polyimide has good resistance to damp heat, salt spray and fungus environment. Overall, the damp heat and salt spray have greater effects on the mechanical properties of YS10-021 polyimide than fungus. |
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