| 聚乙烯醇助分散剂对悬浮聚氯乙烯树脂颗粒特性的影响 |
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| 引用本文： | 包永忠,杨肃宁,黄志明.聚乙烯醇助分散剂对悬浮聚氯乙烯树脂颗粒特性的影响[J].中国氯碱,2010(2):8-11. |
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| 作者姓名： | 包永忠 杨肃宁 黄志明 |
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| 作者单位： | 1. 浙江大学化学工程国家重点实验室,浙江,杭州,310027
2. 锦西化工研究院,辽宁,葫芦岛,125000 |
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| 基金项目： | 国家科技支撑计划项目课题资助(编号:2007BAE10B01) |
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| 摘 要： | 在聚乙烯醇(PVA)/羟丙基甲基纤维素复合主分散体系基础上加入牌号为LM22的PVA助分散剂,研究LM22含量对分散体系界面张力、保胶能力和聚氯乙烯(PVC)树脂颗粒形态的影响。发现随着LM22含量增加,分散剂水溶液-三氯乙烯界面张力和保胶能力降低,PVC树脂平均粒径和增塑剂吸收量增加;随着LM22用量增加,颗粒内部孔隙率增加,初级粒子聚集程度降低,颗粒内部孔径分布变窄。
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| 关 键 词： | 聚氯乙烯 悬浮聚合 聚乙烯醇 颗粒形态 孔隙 |
Influences of secondary dispersant of PVA on particle feature of polyvinyl chloride by suspesion polymerization |
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| BAO Yong-zhong,YANG Su-ning,HUANG Zhi-ming.Influences of secondary dispersant of PVA on particle feature of polyvinyl chloride by suspesion polymerization[J].China Chlor-Alkali,2010(2):8-11. |
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| Authors: | BAO Yong-zhong YANG Su-ning HUANG Zhi-ming |
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| Affiliation: | 1.State Key Laboratory of Chemical Engineering;Zhejiang University;Hangzhou 310027;China;2.Jinxi Chemical Institute;Huludao 125000;China |
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| Abstract: | The LM22 PVA as the secondary dispersant was added based on PVA/hydroxypropyl methyl cellulose composite as the main dispersants.The influence of content of LM22 on the interfacial tension,colloid-protection ability and particle shape were investigated.Aqueous solution of dispersants,interfacial tension of trichloroethylene,and colloid-protecion ability of dispersants were decreased with increase content of LM22,as well as the average diameter of particle and absorption content of plasticizer were increased... |
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| Keywords: | PVC suspension polymerization PVA particle shape porosity |
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