无定形VDC/MMA悬浮共聚树脂的合成研究  

Studies on Synthesis of Amorphous VDC/MMA Suspension Copolymer

作　　者：吕群 黄志明[2] 翁志学[2] 周树学[2] 

机构地区：[1]江西省九江师专化学系 [2]浙江大学高分子科学与工程研究所

出　　处：《塑料工业》1998年第6期1-4,共4页China Plastics Industry

基　　金：江西省自然科学基金

摘　　要：用悬浮聚合法合成了无定形ＶＤＣ／ＭＭＡ共聚树脂，研究了单体配比、聚合温度、引发剂浓度等因素对聚合速率、树脂组成和树脂某些特性的影响。结果表明，单体中ＭＭＡ质量分数含量在２０％～４０％范围时，ＶＤＣ／ＭＭＡ悬浮共聚的速率随ＭＭＡ含量的增加而加快，并具有明显的自动加速现象，温度低于６０℃时，自动加速现象较剧烈；高转化率的树脂中ＭＭＡ单元的含量大于初始单体中ＭＭＡ的含量，其玻璃化温度与窄组成分布的ＶＤＣ／ＭＭＡ共聚树脂相近；当初始单体中ＭＭＡ质量分数大于２５％时。Amorphous VDC/MMA copolymers were synthesized by means of suspension copolymerization.The effects of the factors such as monomer ratio,reaction temperature and initiator concentration on rate of copolymerization,composition and some properties of the copolymers were studied.The results showed the rate of the copolymerization increased with the increase of MMA content in monomer when MMA content was between 20% and 40% (by mass part). The copolymerization had marked automatic acceleration which was more remarkable below 60℃. The content of MMA unit in the high conversion copolymer was more than in initial monomer.Its glass transition temperature was near the narrow composition distribution VDC/MMA copolymers.When MMA content in the initial monomer was more than 25%(by mass part),amorphous VDC/MMA copolymers could be prepared by means of the suspension copolymerization of this paper.

关 键 词：偏氯乙烯 甲基丙烯酸甲酯 悬浮共聚 合成 

分 类 号：TQ316.335[化学工程—高聚物工业]