水性聚碳酸酯型聚氨酯的制备及性能

材料导报

2019, Vol. 33

Issue (z1): 488-490

高分子与聚合物基复合材料

水性聚碳酸酯型聚氨酯的制备及性能

薛晓武^1,2, 王新闻¹, 刘红波², 卿宁¹

1 五邑大学生物科技与大健康学院,江门 529020
2 深圳职业技术学院化生学院,深圳 518055

Preparation and Property of Waterborne Polyurethane Obtained with Polycarbonate

XUE Xiaowu^1,2, WANG Xinwen¹, LIU Hongbo², QING Ning¹

1 School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020
2 School of Applied Chemistry and Biological Technology, Shenzhen Polytechnic, Shenzhen 518055

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摘要本工作制备了稳定性良好的水性聚碳酸酯型聚氨酯(WPCU),并对其进行了红外表征,分析了不同异氰酸酯指数(R=n(NCO)/n(OH))及二羟甲基丙酸(DMPA)、三羟甲基丙烷(TMP)用量对WPCU性能的影响。以最佳配方合成的WPCU与水性聚酯型聚氨酯在性能上作对比,研究表明:当异氰酸酯指数为7时,制备的聚碳酸酯型聚氨酯力学性能良好,拉伸强度达12.46 MPa,吸水率仅为25.88%;TMP可以增加WPCU的交联度,其用量由0.5%增加到1.5%时,聚氨酯的拉伸强度由4.33 MPa增加到7.56 MPa,断裂伸长率由307.12%下降到258.53%;相同分子量的情况下,与聚酯型水性聚氨酯(PESTUR)相比较,WPCU力学性能更好,硬度达2H,拉伸强度高6倍以上。

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	薛晓武
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关键词: 聚碳酸酯水性聚氨酯力学性能耐水性

Abstract: A waterborne polyurethane with great stability was prepared and characterized by FT-IR in this work. This study analyzed the impact of different isocyanate index (R=n(NCO)/n(OH)), dimethylolpropionic acid (DMPA) and trimethylolpropane (TMP) content on the physical properties of WPCU. The study contrasts the performance of the best synthetic WPCU and polyester polyurethanes. The research found that: When the isocyanate index is 7, the prepared polycarbonate polyurethane has good mechanical properties. The tensile strength is up to 12.46 MPa, and the water absorption rate is only 25.88%. Adding TMP can increase the degree of crosslinking of the polyurethane. When the amount of TMP is increased from 0.5% to 1.5%, the tensile strength increases from 4.33 MPa to 7.56 MPa, and the elongation at break decreases from 307.12% to 258.53%. In the case of the same molecular weight, the WPCU has higher mechanical properties, hardness of 2H, and tensile strength is 6 times higher compared with the polyester type waterborne polyurethane (PESTUR)

Key words: polycarbonate waterborne polyurethane mechanical properties water resistance

出版日期: 2019-05-25 发布日期: 2019-07-05

ZTFLH:

TQ323.8

基金资助: 广东省教育厅省级重大科研项目(2014KZDXM056);深圳市基础研究项目(JCYJ20170818114324998)

作者简介: 刘红波,博士/教授,长期从事特殊性能树脂、复合材料及相关精细化学品的研究与开发。广东省专业领军人才,深圳市高层次人才,深圳涂料技术学会常务理事。主持各类课题20余项,在国内外期刊上发表论文50余篇,申请发明专利12项(已授权8项)。薛晓武,男,1992年4月出生,籍贯安徽合肥市,汉族,在读研究生。研究方向为水性聚氨酯。80128292@qq.com

引用本文:

薛晓武, 王新闻, 刘红波, 卿宁. 水性聚碳酸酯型聚氨酯的制备及性能[J]. 材料导报, 2019, 33(z1): 488-490.
XUE Xiaowu, WANG Xinwen, LIU Hongbo, QING Ning. Preparation and Property of Waterborne Polyurethane Obtained with Polycarbonate. Materials Reports, 2019, 33(z1): 488-490.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2019/V33/Iz1/488

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