纳米二氧化硅改性“Click”型侧链含氟聚氨酯的制备及在织物整理剂上的应用

doi:10.11896/cldb.19070035

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Abstract Polyurethane (PU) containing terminal-alkyne functional groups was prepared by using 4, 4′-dimethylol-1, 4-heptadiyne as a chain extender, and then “Click” PU with fluorine-containing side chains was prepared by grafting 2-azide perfluorooctyl ethyl alcohol ester (R_f-N₃) onto the PU via copper-catalyzed 1, 3-dipolar cycloaddition click chemistry reactions between alkynyl groups and azides. Furthermore, “Click” PU with fluorine-containing side chains/nano-silica composite (SiFPU) was prepared by adding hydrophobically modified nano-silica into the “Click” PU matrix. The structure of SiFPU was characterized by FT-IR,¹H NMR and EDS. The effects of nano-silica content on the thermal stability and hydrophobicity of SiFPU films were investigated, and the application of SiFPU on fabric finishing agents was researched. The results show that when R_f-N₃ accounts for 44wt% of PU resin, the water contact angle of SiFPU increases from 104° to 120° and maximum weight loss temperature (T_max) of SiFPU increased from 323 ℃ to 348 ℃ as the nano-SiO₂ content increases from 0wt% to 2wt% in SiFPU. When the content of nano-SiO₂ is 1wt%, the water-repellent property of the fabric treated with 20 g/L SiFPU solution can reach the highest level 6, and the water absorption of the treated fabric is reduced from 72.7% to 6.6%.

Key words： polyurethane with fluorine-containing click chemistry nano-silica nanocomposite fabric finishing agent

Published: 14 July 2020

CLC number:

TQ32

Fund:This work was financially supported by the National Natural Science Foundation of China (51172116, 21176128).

About author:: Qiang Zhangreceived his Ph.D. degree in Harbin Industrial of Technology (HIT) in 2017. He is currently a lecturer in Linyi University. He has published nearly 10 papers in domestic and foreign periodicals, and authorized three invention patents.
Xingjian Liis currently a lecturer in Linyi University. He received his Ph.D. degree from Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences in 2016, and then studied as a post-doctor at Zhejiang University. In 2018, he taught in the School of Materials Science and Engineering, Linyi University, as a high-level doctor. He has published more than 40 journal papers as first author or corresponding author. His research interests focus on the shape memory polymer.

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	ZHANG Qiang
	LIU Hongli
	CHEN Yinghao
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	ZHANG Yiheng

Cite this article:

ZHANG Qiang,LIU Hongli,CHEN Yinghao, et al. Preparation of Nano-silica Modified “Click” Polyurethane with Fluorine-containing Side Chains and Its Application on Fabric Finishing Agent[J]. Materials Reports, 2020, 34(14): 14218-14222.

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http://www.mater-rep.com/EN/10.11896/cldb.19070035 OR http://www.mater-rep.com/EN/Y2020/V34/I14/14218

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