改性聚酯的湿热老化性能研究

Synthetic Fiber in China(2015)

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Abstract
通过力学性能测试、差示扫描量热分析(DSC)和热失重分析等测试手段研究了聚酯(PET)改性料的湿热老化性能,结果表明:复合助剂的加入能显著提升体系的力学性能保持率,进而提升其湿热老化性能,提升的幅度随复合助剂中抗水解助剂含量的增加而显著增加;DSC分析表明复合助剂的引入起到促结晶的作用.PET改性料的湿热老化与结晶度的关系研究结果表明:湿热老化能提高PET改性料体系的结晶度,从而使得其力学韧性丧失,导致材料宏观的脆韧转变.
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