| 动态乳化聚合制备聚丙烯酸酯多元醇细乳液 |
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| 引用本文： | 周新华,毛淑才,胡福田,崔英德.动态乳化聚合制备聚丙烯酸酯多元醇细乳液[J].精细化工,2007,24(9):919-922. |
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| 作者姓名： | 周新华 毛淑才 胡福田 崔英德 |
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| 作者单位： | 1. 广东工业大学,博士后流动站,广东,广州,510090;仲恺农业技术学院,化学与化工系,广东,广州,510225
2. 仲恺农业技术学院,化学与化工系,广东,广州,510225 |
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| 摘 要： | 采用聚合体系乳化剂HLB值动态变化的合成工艺,制备了w(丙烯酸羟乙酯)=12%的聚丙烯酸酯多元醇细乳液(PAME)。PAME的优化合成条件为:m(混合单体)∶m(AA)∶m(乳化剂)∶m(KPS)=1∶0.02∶0.025∶0.004,釜底乳化液HLB值为31.6,滴加部分预乳化液HLB值为20.9,m(滴加乳化剂)∶m(釜底乳化剂)=3∶2,反应温度为80℃,反应时间为4~5 h。聚合过程无需pH缓冲剂,细乳液粒径<110 nm,室温贮存1 a无沉底。
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| 关 键 词： | 动态乳化 聚丙烯酸酯多元醇 细乳液 水性双组分聚氨酯 丙烯酸系列化学品 |
| 文章编号： | 1003-5214（2007）09-0919-04 |
| 修稿时间： | 2007-01-23 |
Preparation of Polyacrylic Polyols Mini-emulsion with Dynamic Emulsion Technology |
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| ZHOU Xin-hua,MAO Shu-cai,HU Fu-tian,CUI Yin-de.Preparation of Polyacrylic Polyols Mini-emulsion with Dynamic Emulsion Technology[J].Fine Chemicals,2007,24(9):919-922. |
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| Authors: | ZHOU Xin-hua MAO Shu-cai HU Fu-tian CUI Yin-de |
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| Affiliation: | Department of Chmistry and Chemical Engieering, Zhongkai University of Agriculture and Technology, Guangzhou 510225, Guangdong , China; Postdoctorial Mobile Station, Guangdong University of Technology, Guangzhou 510090, Guangdong , China |
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| Abstract: | By semi-continuous dynamic emulsion technology,in which the hydrophil-lipophil balance(HLB) of emulsifiers varied continuously,polyacrylic polyols mini-emulsion(PAME) with high hydroxyethyl acrylate(HEA) contents(=12%) was synthesized.The optimal synthesis conditions of PAME were:m(mixed)∶m(AA)∶m(emulsifers)∶m(KPS)=1∶0.02∶0.025∶0.004,m(additional emulsifiers)∶m(kettle emulsifiers)=3∶2,HLB of kettle emulsion 31.6,HLB of pre-emulsified emulsion 20.9,polymerization temperature 80 ℃ and polymerization time 4～5 h.Without pH buffering agent,a mini-emulsion with particle size less than 110 nm was prepared.After the mini-emulsion was stored at room temperature for one year,there was no deposition at the bottom of the container. |
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| Keywords: | dynamic emulsion technology polyacrylic polyols mini-emulsion waterborne two-component polyurethane acrylic series chemicals |
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