中国塑料 ›› 2007, Vol. 21 ›› Issue (1): 18-24.

• 材料与性能 • 上一篇    下一篇

聚丙烯接枝衣康酸增容PA6 /PP共混物性能及形态研究

刘喜军1,朱文明2,姜兆华1*,祁颖2
  

  1. 1.哈尔滨工业大学应用化学系,黑龙江哈尔滨150000;
    2.齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161006
  • 出版日期:2007-01-26 发布日期:2021-03-02

Study of Mechanical Properties and Morphology of the PA6 /PP Blends Compatibilized by Itaconic Acid Grafted PP

LIU Xi-jun1,ZHU Wen-ming2,JIANG Zhao-hua1*,QI Ying2   

  1. 1 .Department of Applied Chemistry,Harbin Institute of Technology, Harbin 150000,China;
    2. College of Chemistry and Chemical Engineering,Qiqihar University , Qiqihar 161006 , China
  • Online:2007-01-26 Published:2021-03-02

摘要: 采用反应型双螺杆挤出机和熔融接枝技术制备了一系列聚丙烯(PP)接枝物,包括单一单体接枝物PP接枝衣康酸(PP-g-ITA)和双单体接枝物PP接枝IT A和苯乙烯[ PP-g- (ITA-co-St) ],通过红外光谱和热分析研究了PP接枝物的结构,并研究了PP接枝物的接枝率和熔体流动速率与单体和引发剂用量的关系。通过反应挤出制备了PP接枝物增容PA6 /PP共混物,研究了增容共混物的力学性能和形态结构。结果显示:加人接枝物后,共混体系的冲击强度明显提高;SEM观察表明,接枝物的加人能明显改善增容共混物的两相界面结合状况,降低共混物的分散相尺寸,改善体系的分散状况,共混物的两相界面变得模糊,相容性得到明显提高;DSC测试表明,加人接枝物后,共混物中PAfi织分的结品彦下降.PP蜘合的结晶磨卜升_弃明PP-a-TTA早PAf,/PP耸混体蔡有扮的增容刻兼增韧剂。

关键词: 聚酞胺6, 聚丙烯, 聚丙烯接枝衣康酸, 共混物, 力学性能, 形态结构

Abstract: PP was grafted by itaconic acid or by itaconic acid and styrene via melt reactive twin screw ex- trusion, the products were studied using FTIR and thermal an alysis. The effects of concentration of monomers and initiator on the graft ratio and melt flow rate of gr afted PP were studied. The grafted PP was employed in PA6/PP blends as a compatibilizer and an im provement in impact strength was ob served. SEM indicated that the homogeneity of the compatibiliz hed PA6/PP blend was also improved. The size of the dispersion phase was significantly reduced, the in nterface became smeared. DSC showed that the crystallinity of PA6 component in the blends was decreas ed with the introduction of grafted PP.

Key words:  polyamide 6;polypropylene, itaconic acid grafted polypropylene, blend, mechanical property;morphology

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