Synthesis and surface properties of polyurethane modified by polysiloxane

Linlin FENG ¹Xingyuan ZHANG ¹Jiabing DAI ¹Zhen GE ¹Jing CHAO ¹Chenyan BAI¹

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作者信息

1. Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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Abstract

A series of polyurethanes modified by polysiloxane (Si-PU) were synthesized based on 2,4-toluene diisocyanate (TDI), dihydroxybutyl-terminated polydimethylsiloxane (DHPDMS), polytetramethylene glycol (PTMG) and 1,4-butanediol (BDO). Fourier transform infrared spectroscopy analysis showed that DHPDMS had been incorporated into the polyurethane chains. With the increase of DHPDMS content, the water contact angle increased while the surface tension decreased. As the DHPDMS content increases above 5%, both the contact angle and the surface tension tend to approach a constant. The contact angle increases with increasing temperature, and it tends to approach a constant when the temperature is higher than 50℃. The result indicates that Si-PU exhibits good surface and mechanical properties when the DHPDMS content is 5%.

Key words

dihydroxybutyl-terminated polydimethytsi-loxane/polyurethane modified by polysiloxane/contact angle/surface tension

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基金项目

国家自然科学基金(50273035)

Anhui Provincial Education Department(2003kj051zd)

出版年

2008

中国化学前沿

高等教育出版社

中国化学前沿

ISSN：1673-3495

被引量2

参考文献量1

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