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Key Laboratory of Special Functional Polymer Materials and Related Technology of Ministry of Education, East China University of Science and Technology, Shanghai 200237 |
SONG Bo, FU Qian, LIU Xiaoyun, ZHUANG Qixin, HAN Zhewen |
Key Laboratory of Special Functional Polymer Materials and Related Technology of Ministry of Education, East China University of Science and Technology, Shanghai 200237 |
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Cite this article:
SONG Bo FU Qian LIU Xiaoyun ZHUANG Qixin HAN Zhewen. Key Laboratory of Special Functional Polymer Materials and Related Technology of Ministry of Education, East China University of Science and Technology, Shanghai 200237. Chin J Mater Res, 2010, 24(5): 487-492.
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Abstract The effects of moisture, heat and UV light on the aging behave, the storage life and usage life of poly-p-phenylenebenzobisoxazole (PBO) fiber were investigated. It was found that the aging behaves of PBO fiber was susceptible to UV light. The cortex of the fiber was damaged severely during the 192 h accelerated UV light aging period, which led to significant reduction of tensile strength of fiber. The moisture had an evidently negative effect on the aging behaves of PBO fiber whether aging with UV light or not, and the effect was more obvious when exposed to UV light. The possible mechanism was the penetration of water molecules into the fiber‘s interior, which led to the formation of microfibril and the decline of fiber tensile strength. Increasing aging temperature can promote the penetration ability of water molecules, which speeded the decline of fiber tensile strength. The fibers aging in high humidity environments at a fixed temperature degraded more quickly. PBO fiber had excellent stability in isolation from moisture and ultraviolet radiation.
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Received: 26 May 2010
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Fund: Supported by National Natural Science Foundtion of China Nos.50703010 and 50973028. |
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