中国塑料

中国塑料 ›› 2008, Vol. 22 ›› Issue (02): 19-23 .DOI: 10.19491/j.issn.1001-9278.2008.02.004

• 材料与性能 • 上一篇    下一篇

α-甲基苯乙烯对ABS树脂耐热改性的研究

高玉玲，巨安奇，曹春雷，葛彦侠，张芳芳，张明耀   

  1. 长春工业大学化学工程学院，吉林长春130012
  • 收稿日期:2007-09-18 修回日期:1900-01-01 出版日期:2008-02-26 发布日期:2008-02-26

Modification Effect of α-Methylstyrene on Feat Resistance of ABS Resin

GAO Yu-ling，JU An-qi，CAO Chun-lei，GE Yan-xia，ZHANG Fang-fang，ZHANG Ming-yao   

  1. Institute of Chemical Engineering, Changchun University of Technology, Changchun 130012, China
  • Received:2007-09-18 Revised:1900-01-01 Online:2008-02-26 Published:2008-02-26
  • Contact: ZHANG Ming-yao

摘要： 采用乳液聚合的方法合成了一系列α-甲基苯乙烯(α-MSt)/苯乙烯(St)/丙烯腈(AN) (α-MSAN)共聚物，用ABS接枝共聚物与α-MSAN熔融共混制备了耐热ABS。研究了α-MSAN组成对ABS耐热性能及力学性能的影响。固定AN的含量，调整α-MSt/St配比，差示扫描量热分析发现，α-MSAN的玻璃化转变温度(Tg)随着α-MSt含量的增加呈线性增加趋势，α-MSt含量每增加10%，共聚物的Tg均提高约1-2℃;动态力学分析发现，ABS树脂的Tg随着α-MS含量的增加向高温方向移动，当α-MSt/St配比为100/0时Tg高达129. 5 C。固定α-MSt/St的配比为50/50,调整AN含量，结果发现，当AN含量为25%(质量分数，下同)时，ABS树脂的Tg可达121℃，且力学性能最佳。

关键词: 乳液聚合, α-甲基苯乙烯, 丙烯腈-丁二烯-苯乙烯共聚物, 耐热性, 玻璃化转变温度

Abstract: A series of α-methylstyrene-styrene-acrylonitrile copolymers(α-MSAN)was synthesized via emulsion polymerization, which was employed to modify heat resistance and mechanical properties of ABS resin. DSC showed that at constant content of AN，the Tg of the α-MSAN copolymers increased linearly with increasing proportion of α-MSt. DMA indicated that the Tg of ABS resin containing α-MSAN shifted to higher temperature, while mechanical properties decreased slightly. When the ratio of α-MSt/St was 50/50 and the content of AN was 25%，the optimal comprehensive mechanical property of ABS resin was observed.

Key words: emulsion polymerization, α-methylstyrene, acrylonitrile-butadiene-styrene copolymer, heatresistance, glass transition temperature

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