第43卷第1期
2015年1月【科研与生产】
聚氯乙烯 Polyvinyl Chloride
微悬浮法PVC糊树脂的合成研究
包永忠”，费瑞，黄志明
（浙江大学化学工程联合国家重点实验室，浙江杭州310027）
【关键词】聚氯乙烯；微悬浮聚合；粒径；乳化剂
Vol.43,No.1 Jan.，2015
【摘要】采用三氯乙烯作为氟乙烯模拟液，研究主/助乳化剂结构、用量和比例等对分散液滴粒径及粒度分布的影响。采用5L高压夹套釜进行氯乙烯微悬浮聚合，研究主/助乳化剂结构、用量、比例和水油比对PVC初级粒子平均粒径和粒度分布的影响。发现以十二烷基硫酸钠（SDS)为主乳化剂时分散液滴的尺寸最小，PVC胶乳稳定，粒度分布窄；随着脂肪醇助乳化剂硅长的增加，分散减滴尺寸明显减小，十六醇、十八醇或两者的混合醇是氯乙烯微悬浮聚合适宜的助乳化剂；随着十六醇或十六~十八混合醇与SDS用量比的增加，分散液滴和PVC胶乳粒子的尺寸逐渐减小，粒度分布趋窄。微悬浮聚合PVC糊树脂包含粒径范图较宽但呈连续分布的初级粒子，通过主/ 助乳化剂用量比的改变，可调节PVC初级粒子的平均粒径及粒度分布。
【中围分类号］TQ325.3
【文款标志码】B
[文章编号】10097937(2015)010015-05
Studies on synthesis of poly(vinyl chloride) paste resin
by micro-suspension polymerization BAO Yongzhong，JIA Rui,HUANG Zhiming
(State Key Laboratory of Chemical Engineering, Zhejang University, Hangzhou 310027,China) Key words: Poly(vinyl chloride) ; micro-suspension polymerization; particle size; emulsifier
Abstract: The influences of the structure of main and auxiliary emulsifiers, their usage and mass ratio on the mean size and size distribution of dispersed droplets were investigated through using trichloroethyl-ene as the model of vinyl chloride. The influences of the structure of main and auxiliary emulsifiers, their usage and mass ratio, and water/monomer mass ratio on the mean size and size distribution of PVC pri-mariy particles were investigated through micro-suspension polymerization of vinyl chloride in a 5-L jacke-ted autoclave. It was found that the size of droplets was the smallest and PVC latex was stable when sodi-um dodecyl sulfate (SDS) was used as the main emulsifier. The size of droplets decreased with the in-crease of the chain length of fatty alcohols. Cu6, Crs alcohols or their mixtures were suitable auxiliary e-mulsifier for vinyl chloride micro-suspension polymerization. The droplet and PVC latex particle sizes de-creased and size distribution became narrow as the mass ratio between Chs or Cue-1s alcohol and SDS in-eseeaeseoase continuous size distribution. The mean size and size distribution of PVC primary particles could be adjus ted by varying the usage and ratio of main and auxiliary emulsifiers
PVC糊树脂是主要以增塑糊形式加工应用的【收稿日期】2014-0324
PVC树脂，其具有加工方式多样、加工工艺和设备
【作者简介】包永忠（1968一），男，教授，博士生导师，主要从事聚合反应工程及基于氯乙婚聚合方面的研究工作，先
后获国家科技进步二等奖2项、省部级奖3项，发表论文100多篇，授权专利6项。
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