| 高固含量低黏度聚氨酯微乳液的制备及性能研究 |
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| 引用本文： | 卫晓利,张发兴,肖忠良,吴晓青.高固含量低黏度聚氨酯微乳液的制备及性能研究[J].高分子学报,2009,0(1):28-34. |
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| 作者姓名： | 卫晓利 张发兴 肖忠良 吴晓青 |
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| 作者单位： | 1. 中北大学理学院,太原,030051
2. 四川理工学院材料与化学工程系,自贡,643013 |
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| 摘 要： | 以聚(四氢呋喃-co-氧化丙烯)二醇(Ng210)为软段,异佛尔酮二异氰酸酯(IPDI)为硬段,以1,2-二羟基-3-丙磺酸钠(DHPS)和二羟甲基丙酸(DMPA)作为亲水扩链剂,采用自乳化法合成了一系列了高固含量低黏度稳定聚氨酯微乳液,分析了DHPS和DMPA质量配比对乳液性能的影响,结果表明,所得乳液粒径呈多元分布,乳胶粒子呈球形;乳液为假塑性流体,表观黏度小于250mPa.s(剪切速率为25s-1)且随切变速率的变化规律呈现一定的切力变稀特征;随着DHPS/DMPA比值的增大,胶粒平均粒径逐渐减小,多分散性增强;当DHPS/DMPA值为4/10～6/10时,乳液中大小粒子粒径比为6～8,且大乳胶粒子的体积分数约为70%～75%,乳液的固含量均大于70%.另外,乳液具有较好的低温和高温以及贮存稳定性,具有较低的表面张力,相对于常规的聚氨酯乳液,所制备的高固含量聚氨酯乳液胶膜具有更好的力学性能.
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| 关 键 词： | 高固含量 低黏度 聚氨酯微乳液 亲水扩链 制备 |
| 收稿时间： | 2008-03-17 |
PREPARATION AND PROPERTIES OF HIGH-SOLID CONTENT AND LOW-VISCOSITY POLYURETHANE MICROEMULSIONS |
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| WEI Xiao-li,ZHANG Fa-xing,XIAO Zhong-liang,WU Xiao-qing.PREPARATION AND PROPERTIES OF HIGH-SOLID CONTENT AND LOW-VISCOSITY POLYURETHANE MICROEMULSIONS[J].Acta Polymerica Sinica,2009,0(1):28-34. |
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| Authors: | WEI Xiao-li ZHANG Fa-xing XIAO Zhong-liang WU Xiao-qing |
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| Institution: | 1 Department of Science;North University of China;Taiyuan 030051;2 Department of Material and Chemical Engineering;Sichuan Institute of Technology;Zigong 643013 |
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| Abstract: | A series of novel stable polyurethane emulsions with high-solid-content and low-viscosity were prepared by self-emulsification.They were prepared by the reaction of poly(tetrahydrofuran-co-propylene oxide)glycol(Ng210),isophorone isocyanate(IPDI)with sodium 1,2-dihydroxy-3-propanesulfonate(DHPS)and dimethylolpropanoic acid(DMPA)as hydrophilic chain-extending agents.Influence of the mass ratio of DHPS and DMPA on properties of polyurethane emulsions and films was analyzed.The results showed that the obtained... |
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| Keywords: | High-solid-content Low-viscosity Polyurethane micro-emulsion Hydrophilic chain-extending agents Preparation |
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