中国塑料

中国塑料 ›› 2012, Vol. 26 ›› Issue (01): 18-22 .DOI: 10.19491/j.issn.1001-9278.2012.01.004

• 材料与性能 • 上一篇    下一篇

MBS接枝共聚物对PMMA树脂的增韧研究

郭丽春 任亮 李明远 刘毅梅 张明耀 张会轩   

  1. 长春工业大学合成树脂与特种纤维教育部工程研究中心 1长春工业大学化工学院2中国科学院长春应用化学研究所
  • 收稿日期:2011-09-08 修回日期:2011-11-22 出版日期:2012-01-26 发布日期:2012-01-26

Study on MBS copolymer Toughened PMMA Resin

Lichun GUO Liang REN Mingyuan LI Yimei LIU Mingyao ZHANG Huixuan ZHANG   

  • Received:2011-09-08 Revised:2011-11-22 Online:2012-01-26 Published:2012-01-26
  • Contact: Mingyao ZHANG

摘要： 采用乳液聚合法在聚丁二烯（PB）乳胶粒子上接枝苯乙烯（St）和甲基丙烯酸甲酯(MMA),合成了一系列的MBS接枝共聚物（简称MBS），将其与聚甲基丙烯酸甲酯（PMMA）进行熔融共混制备PMMA/MBS共混物，研究了PB及相对分子质量调节剂叔十二烷基硫醇（TDDM）含量对共混物力学性能和微观形态结构的影响。结果表明，随着MBS中PB所占比例的增加，共混物的冲击强度表现出先增大后减小的趋势，当PB所占比例为50 %（质量分数，下同）时，共混物的冲击强度达到200 J/m，而拉伸强度表现出上升的趋势；随着TDDM用量的增加，MBS的接枝率和接枝效率降低，导致共混物的冲击强度先增加后减小；随着MBS中PB所占比例的增加，接枝率的逐渐降低，MBS在PMMA基体中分散程度逐渐变差。

关键词: 甲基丙烯酸甲酯-丁二烯-苯乙烯接枝共聚物, 聚甲基丙烯酸甲脂, 乳液聚合, 力学性能, 增韧

Abstract: A series of methyl methacrylate-butadiene-styrene copolymer (MBS), in which polybutadienc（PB） particles were grafted with St and methyl methacrylate (MMA), was synthesized via emulsion polymerization. The obtained MBS was blended with PMMA forming blends. The mechanical properties and morphology of PMMA/MBS blends were studied. It was found that the impact strength of blends increased and then decreased with increasing PB content in MBS. When the PB content in MBS was 50 %, the impact strength was 200 J/m. The morphology of the blends showed that the dispersion of MBS in the PMMA matrix became poorer with decreasing degree of grafting of PB.

Key words: methyl methacrylate-butadiene-styrene copolymer, poly(methyl methacrylate), emulsion polymerization, mechanical properties, toughening

京公网安备11010802034965号　 京ICP备13020181号-2
《中国塑料》编辑部 ©2008-2023 版权所有
地址:北京市海淀区阜成路11号　邮编：100048
编辑部：010-68985541　联系信箱：cp@plaschina.com.cn
广告部/发行部：010-68985253　本系统由北京玛格泰克科技发展有限公司设计开发