高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (9): 1480.

• 论文 • 上一篇    下一篇

POM/EVA共混物的研究

何军坡1, 黄秀云1, 胡企中2, 杨思源1   

  1. 1. 复旦大学高分子科学系, 上海, 200433;
    2. 上海溶剂厂
  • 收稿日期:1994-11-02 修回日期:1995-03-28 出版日期:1995-09-24 发布日期:1995-09-24
  • 通讯作者: 黄秀云
  • 作者简介:何军坡,男,27岁,硕士,助教.
  • 基金资助:

    化学工业部“八五”攻关课题

Studies on POM/EVA Blends

HE Jun-Po1, HUANG Xiu-Yun1, HU Qi-Zhong2, YANG Si-Yuan1   

  1. 1. Department of Macromolecular Science, Fudan University, Shanghai, 200433;
    2. Shanghai Solvent Factory
  • Received:1994-11-02 Revised:1995-03-28 Online:1995-09-24 Published:1995-09-24

摘要: 用力学测试、扫描电镜(SEM)、热分析(DSC)等手段研究了聚甲醛(POM)与乙烯-醋酸乙烯酯共聚物(EVA)共混物(POM/EVA)的力学性能及其微观形态;用聚甲醛与马来酸二丁酯(DBM)的接枝物(POM-g-DBM)作相容剂,能改变共混物两相间的粘结力,从而提高了共混物的力学性能。SEM观察表明接枝物的加入改变了POM/EVA共混物的断裂方式、微观形态及结晶性能,对其热性能影响不大;通过改变POM/EVA的配比、接枝物的用量及分子量等,筛选出共混物制备的最佳配方。

关键词: 聚甲醛, 乙烯-醋酸乙烯酯共聚物, 共混物, 相容剂, 增韧

Abstract: The mechanical behavior and micro-structure of polyoxymethylene(POM)/poly (ethylene-co-vinyl acetate)(EVA)blends are investigated using scanning electron microscope(SEM)and DSC with various affecting factors such as the ratio of POM/EVA, molecualr weight and content of graft copolymer in blends.The result indicates that the fracture mechanism of POM/EVA blends can be changed from brittle to ductile by addition of POM-graft-DBM (dibutyl maleate) as a compatibilizer which can increase the adhesive strength of two phases and so the impact strength of the blend. The crystallinity and thermal propertyof the blend are also studied.Atoughened POM blend has been obtained according to the change of the notched Charpy impact strength with the composition of the blends.

Key words: POM,EVA, Blend, Compatibilizer, Toughening

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