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STUDIES ON THE PROPERTIES OF PTT/PP BLENDS
Author(s): 
Pages: 12-15
Year: Issue:  8
Journal: ENGINEERING PLASTICS APPLICATION

Keyword:  聚对苯二甲酸丙二酯聚丙烯结晶性能力学性能;
Abstract: 通过熔融共混制备了聚对苯二甲酸丙二酯/聚丙烯(PTT/PP=75/25)及其马来酸酐接枝PP(PP-g-MAH)增容共混物,研究了PTT/PP及其增容共混物的结晶性能、力学性能、流变性能和结晶形态.研究结果表明,PTT与PP共混能提高PP、PTT组分的结晶温度;对于增容共混物,随PP-g-MAH用量的增加,PP和PTT的结晶温度基本不变.加入PP使PTT拉伸强度降低,冲击强度提高;PP-g-MAH增容使共混物的拉伸和冲击强度都提高.增容共混物的熔体粘度明显降低,存在明显的剪切变稀现象,但熔体粘度与PP-g-MAH用量无关.在一定用量范围内,随PP-g-MAH用量的增加,PP分散相的尺寸变小.
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