| 悬浮法PEB-g-SAN的合成及其对SAN树脂的增韧作用 |
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| 引用本文： | 吴敌,王炼石,蔡彤旻,张安强,曾祥斌,朱勇平.悬浮法PEB-g-SAN的合成及其对SAN树脂的增韧作用[J].工程塑料应用,2009,37(10). |
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| 作者姓名： | 吴敌 王炼石 蔡彤旻 张安强 曾祥斌 朱勇平 |
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| 作者单位： | 1. 华南理工大学材料科学与工程学院,广州,510640
2. 广州金发科技股份有限公司,广州,510520 |
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| 基金项目： | 广州市科技计划重点项目(2007Z2-D0161) |
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| 摘 要： | 以(乙烯/1丁-烯)共聚物(PEB)、苯乙烯(St)和丙烯腈(AN)为原料,采用悬浮接枝共聚法合成了(苯乙烯/丙烯腈)共聚物(SAN)接枝PEB(PEB-g-SAN),用其与SAN熔融共混制备了冲击性能优异的增韧塑料AEBS。研究了反应条件对单体转化率(CR)、接枝率(GR)、接枝效率(GE)及AEBS冲击性能的影响。结果表明,在适宜的聚合条件下,PEB/St-SAN悬浮接枝体系具有较高的CR、GE和GR,分别可达94.8%、49.3%和38.2%。当PEB质量分数为25%时,AEBS的缺口冲击强度高达42.8 kJ/m2,约为纯SAN(1.2 kJ/m2)的35倍。扫描电子显微镜分析表明,增韧机理以剪切屈服为主。动态机械分析表明,在PEB-g-SAN接枝反应中,当PEB质量分数为55%、AN为35%时,其增韧的AEBS的两个tanδ峰向内靠拢程度最大,SAN与PEB-g-SAN的相容性最好。
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| 关 键 词： | 悬浮接枝共聚合 PEB-g-SAN 接枝率 扫描电子显微镜 动态机械分析 |
SYNTHESIS OF PEB-g-SAN BY SUSPENSION POLYMERIZATION AND THE SYNTHETIC'S TOUGHENING EFFECT ON SAN RESIN |
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| Wu Di,Wang Lianshi,Cai Tongmin,Zhang Anqiang,Zeng Xiangbin,Zhu Yongping.SYNTHESIS OF PEB-g-SAN BY SUSPENSION POLYMERIZATION AND THE SYNTHETIC'S TOUGHENING EFFECT ON SAN RESIN[J].Engineering Plastics Application,2009,37(10). |
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| Authors: | Wu Di Wang Lianshi Cai Tongmin Zhang Anqiang Zeng Xiangbin Zhu Yongping |
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| Affiliation: | 1.College of Materials Science and Engineering;South China University of Technology;Guangzhou 510640;China;2.Guangzhou Kingfa Science and Technology Co.Ltd.;Guangzhou 510520;China |
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| Abstract: | PEB-g-SAN was prepared by graft copolymerization of styrene(St) and acrylonitrile(AN) onto poly(ethene-co-1-butene)(PEB) with suspension polymerization.The high impact plastics AEBS were prepared by blending PEB-g-SAN with SAN resin.The effects of the condition of suspension grafting copolymerization on monomer conversion ratio(CR),grafting ratio(GR),grafting efficiency(GE) and the impact strength of AEBS were investigated.The results showed that CR,GR and GE were high while befittingly,CR,GE and GR were 94... |
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| Keywords: | suspension grafting copolymerization PEB-g-SAN grafting ratio SEM DMA |
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