有机硅协同改性含氟聚氨酯

doi:10.16085/j.issn.1000-6613.2018-0083

化工进展 ›› 2018, Vol. 37 ›› Issue (11): 4444-4450.DOI: 10.16085/j.issn.1000-6613.2018-0083

有机硅协同改性含氟聚氨酯

辛华, 杨江鹏, 徐敬尧, 王静会, 赵星, 郭兵

陕西科技大学教育部轻化工助剂化学与技术重点实验室, 陕西西安 710021

收稿日期:2018-01-10 修回日期:2018-04-04 出版日期:2018-11-05 发布日期:2018-11-05
通讯作者: 辛华(1980-),副教授,硕士生导师,研究方向为功能高分子材料的开发及应用。E-mail:xinhua@sust.edu.cn。
作者简介:辛华(1980-),副教授,硕士生导师,研究方向为功能高分子材料的开发及应用。E-mail:xinhua@sust.edu.cn。
基金资助:
国家自然科学基金（51603117）及陕西省大学生创新创业训练计划（1328）项目。

Fluorinated polyurethane modified by organosilicon compounds

XIN Hua, YANG Jiangpeng, XU Jingyao, WANG Jinghui, ZHAO Xing, GUO Bing

Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an 710021, Shaanxi, China

Received:2018-01-10 Revised:2018-04-04 Online:2018-11-05 Published:2018-11-05

摘要/Abstract

摘要： 采用细乳液法结合超声分散技术制备出水性聚氨酯（WPU）、含氟水性聚氨酯（FPAPU）和KH570、羟基硅油协同改性的氟硅水性聚氨酯乳液（SiFPAPU）。通过红外光谱（FTIR）、粒度分布（PSA）、接触角（CA）、表面能分析、原子力显微镜（AFM）、扫描电镜（SEM）、热失重（TG）、拉伸试验表征了WPU、FPAPU、SiFPAPU复合乳液表面性能、热稳定性和力学性能。结果表明随着有机硅协同组分加入，SiFPAPU乳液粒径降低为44.0nm，但粒径分布变宽；成膜后，水相和油相（CH₂I₂）接触角分别达到122.6°、92.5°，表面能降低为11.82mJ/m²，乳胶膜表面平整均一，断面出现明显分层。同时SiFPAPU热稳定性增强，拉伸强度较未改性聚氨酯提高126.1%。

关键词: 有机硅, 含氟聚氨酯, 表面性能, 热稳定性, 膜, 粒度分布

Abstract: The waterborne polyurethane(WPU), fluorinated waterborne polyurethane (FPAPU) and fluorinated waterborne polyurethane modified by KH570 and hydroxyl silicone oil (SiFPAPU) were prepared by the mini-emulsion polymerization method combined with ultrasonic dispersion technology. The surface properties, thermal stability and mechanical properties of WPU、FPAPU and SiFPAPU were characterized by Fourier transform infrared spectroscopy(FTIR), particle size distribution(PSA), contact angle (CA), surface free energy analysis, atomic force microscopy(AFM), scanning electron microscopy(SEM), thermogravimetric analysis(TG), and tensile strength test. The results showed that with the addition of organosilicon compounds, the SiFPAPU emulsion particle size reduced to 44.0nm and the particle size distribution became wider. The contact angles of water and oil (CH₂I₂) on the SiFPAPU film could reach to 122.6ånd 92.5°, respectively, and the surface free energy was 11.815mJ/m². The surface of SiFPAPU film was uniform, while the cross section of SiFPAPU film showed obvious stratification. At the same time, the thermal stability of SiFPAPU film was enhanced, and the tensile strength of SiFPAPU film was 126.1% higher than that of unmodified polyurethane.

Key words: organosilicon compound, fluorinated polyurethane, surface property, thermal stability, film, particle size distribution

中图分类号:

TQ031

辛华, 杨江鹏, 徐敬尧, 王静会, 赵星, 郭兵. 有机硅协同改性含氟聚氨酯[J]. 化工进展, 2018, 37(11): 4444-4450.

XIN Hua, YANG Jiangpeng, XU Jingyao, WANG Jinghui, ZHAO Xing, GUO Bing. Fluorinated polyurethane modified by organosilicon compounds[J]. Chemical Industry and Engineering Progress, 2018, 37(11): 4444-4450.

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有机硅协同改性含氟聚氨酯

Fluorinated polyurethane modified by organosilicon compounds

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