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Study on Properties of PP/PEST Blend
Author(s): 
Pages: 4-7
Year: Issue:  5
Journal: Advanced Textile Technology

Keyword:  PP共混共聚物相容剂;
Abstract: 以聚丁二酸乙二醇-共-对苯二甲酸乙二醇酯(PEST)为添加剂,聚丙烯接枝甲基丙烯酸缩水甘油酯(PP-g-GMA)为相溶剂,利用双螺杆挤出机对聚丙烯(PP)进行熔融共混改性.通过扫描电子显微镜、示差扫描量热法、热重分析法和旋转流变仪等方法,对PP/PEST共混物分散相的形貌、结晶性能、热性能、流变性等进行了测试.结果表明:PP-g-GMA的添加能使PP/PEST共混物中分散相PEST的粒径大小和分布得到一定的改善;PEST的加入使共混物的结晶能力较纯PP有所下降;受PEST热稳定性较差的影响,共混物的热稳定性也有一定程度的下降;共混物的复数黏度介于两单组分的复数黏度之间,呈现切力变稀现象.
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