| 阳离子水性聚氨酯乳液的合成及性能 |
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| 引用本文： | 陆金昌,李仙会,欧朝霞,陈麒.阳离子水性聚氨酯乳液的合成及性能[J].高分子材料科学与工程,2012(3):1-4. |
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| 作者姓名： | 陆金昌 李仙会 欧朝霞 陈麒 |
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| 作者单位： | 华东理工大学材料科学与工程学院;上海材料研究所 |
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| 摘 要： | 以二异氰酸酯和聚酯二元醇合成聚氨酯预聚体,采用N-甲基二乙醇胺(N-MDEA)为亲水扩链剂,制备了阳离子水性聚氨酯(CWPU)乳液,研究了制备CWPU乳液的影响因素,并研究了CWPU乳液涂膜的拉伸性能。研究表明,当N-MDEA的质量分数为7.0%-9.5%,R值为1.3-1.5,中和度为80%-100%时,可制得稳定性较好的CWPU乳液。随着N-MDEA含量增加,CWPU乳液涂膜拉伸强度增加,断裂伸长率下降;随着中和度的提高,涂膜拉伸强度和断裂伸长率同时提高。
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| 关 键 词： | 阳离子 水性聚氨酯 二异氰酸酯 涂膜 |
Synthesis and Properties of Cationic Waterborne Polyurethane Emulsion |
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| Jinchang Lu,Xianhui Li,Zhaoxia Ou,Qi Chen.Synthesis and Properties of Cationic Waterborne Polyurethane Emulsion[J].Polymer Materials Science & Engineering,2012(3):1-4. |
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| Authors: | Jinchang Lu Xianhui Li Zhaoxia Ou Qi Chen |
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| Affiliation: | 1(1.School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China;2.Shanghai Research Institute of Materials,Shanghai 200437,China) |
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| Abstract: | With N-methyldiethanola mine as a hydrophilic agent,a series of cationic waterborne polyurethane(CWPU)emulsions were prepared with diisocyanate and polyester diol.The influence factors on preparation of CW-PU emulsion were studied.The tensile properties of CWPU emulsion cast films were also studied.The results show that the stable CWPU emulsion is conveniently obtained with polyurethane prepolymer when mass fraction of N-MDEA is 7.0%～9.5%,R value is 1.3～1.5 and degree of neutralization is 80%～100%.The tensile properties of the CWPU emulsion cast films show that the tensile strength increases,and the elongation at break decreases with the N-MDEA content increasing,the tensile strength and the elongation at break increase simultaneously with the degree of neutralization increasing. |
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| Keywords: | cation waterborne polyurethane diisocyanate cast film |
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