| 环氧改性水性聚氨酯的合成工艺及性能研究 |
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| 引用本文： | 朱黎澜,林旭峰,钱军,韩哲文.环氧改性水性聚氨酯的合成工艺及性能研究[J].涂料工业,2012,42(4):36-40,43. |
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| 作者姓名： | 朱黎澜 林旭峰 钱军 韩哲文 |
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| 作者单位： | 华东理工大学材料科学与工程学院特种功能高分子材料及相关技术教育部重点实验室,上海,200237 |
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| 摘 要： | 采用甲苯二异氰酸酯(TDI)、聚醚二元醇(GE-210)、1,4-丁二醇(BDO)、二羟甲基丙酸(DMPA)、环氧树脂(E-128)和丙烯酸羟丙酯(HPA)为主要原料,制备环氧改性水性聚氨酯乳液。研究预聚体中的—NCO和—OH物质的量之比(R)及小分子扩链剂、亲水扩链剂、环氧树脂的加入量,对粒径、黏度、贮存稳定性和涂膜耐水性的影响。实验结果表明:预聚体中R值为6～7;小分子扩链剂BDO用量为7%～8%;亲水扩链剂DMPA的用量为6%～7%;环氧树脂添加量为6%～7%时,乳液外观及稳定性最好,涂膜的耐水性能优异,可以作为一种性能优异的涂料用水性聚氨酯树脂。
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| 关 键 词： | 环氧树脂 改性 水性聚氨酯 |
Synthesis Technology and Properties of Waterborne Polyurethane Modified by Epoxy Resin |
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| Zhu Lilan
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Lin Xufeng
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Qian Jun
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Han Zhewen.Synthesis Technology and Properties of Waterborne Polyurethane Modified by Epoxy Resin[J].Paint & Coatings Industry,2012,42(4):36-40,43. |
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| Authors: | Zhu Lilan Lin Xufeng Qian Jun Han Zhewen |
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| Affiliation: | (Key Laboratory of Specially Functional Polymeric Materials and Related Technology of the Ministry of Education, School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China) |
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| Abstract: | The title waterborne polyurethane emulsion modified by epoxy resin was prepared using toluene diisocyanate(TDI),polyether(GE-210),1,4-butanediol(BDO),dimethylolpropionic acid(DMPA),epoxy resin and hydroxypropyl acrylate(HPA).Effects of the molar ratio of the —NCO and the —OH group in the prepolymer(R),the content of small molecule chain extenders,hydrophilic chain extender and epoxy resin on the size,viscosity,stability of the emulsion and water-resistance of the film was studied.The experimental results showed that the water resistance of WPU was improved,when the R was 6~7,BDO addition level was about 7%~8%,DMPA 6%~7%,epoxy resin 6%~7%,as well as good appearance and stability of the emulsion,which could be used as a WPU resin for waterborne coatings with excellent performance. |
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| Keywords: | epoxy resin modification waterborne polyurethane |
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