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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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远程“传染”对聚丙烯光氧老化的影响
DOI: 10.11777/j.issn1000-3304.2015.15041, PP. 369-373
Keywords: 聚丙烯,光氧降解,远程"传染"
Abstract:
研究了聚丙烯(PP)在附近有其他聚合物存在下,其光氧老化受"传染"的现象.研究发现,PP的光氧化会受到邻近聚合物降解产物的影响而被加速,即发生光氧化降解的"传染".当"传染源"不同时,被"传染"的情况也有所不同.在PP、聚甲基丙烯酸甲酯(PMMA)、尼龙6(PA6)和苯乙烯-丙烯酸酯共聚物(PSB)中,PSB的降解产物影响最大,使得PP光氧化的降解速率成倍增长.老化后的PP或PMMA作为"传染源"时,对PP的光氧化降解速率有进一步的促进.这种"传染"行为与聚合物降解产物的种类和含量有很大的关系.
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