Preparation and properties of waterborne polyurethane modified by stearyl acrylate for water repellents

Lixia Sheng; Xuetong Zhang; Zhen Ge; Zhu Liang; Xiaoli Liu; Chunpeng Chai; Yunjun Luo

doi:10.1007/s11998-018-0096-x

Preparation and properties of waterborne polyurethane modified by stearyl acrylate for water repellents

Lixia Sheng, Xuetong Zhang, Zhen Ge^*, Zhu Liang, Xiaoli Liu, Chunpeng Chai, Yunjun Luo

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Double bond end-capped waterborne polyurethane (DWPU) was synthesized from toluene diisocyanate, hydroxypropyl polysiloxane, trimethylolpropane, N-methyldiethanolamine, and hydroxyethyl acrylate. Then water repellents with long-chain hydrophobic alkyl structure were obtained by radical copolymerization of stearyl acrylate (SA) and DWPU. The waterproofing performance and other properties of the water repellents were studied for different SA contents. The results showed that, for the water repellent with SA content of 50 wt%, the water absorption of the film reduced to 4.29% while the water contact angle of fabric coated by the water repellent rose to 141.5°. In addition, the optimum SA content of the water repellent was 40%, achieving the highest score of 85 points in the waterproof performance evaluation.

Original language	English
Pages (from-to)	1283-1292
Number of pages	10
Journal	Journal of Coatings Technology and Research
Volume	15
Issue number	6
DOIs	https://doi.org/10.1007/s11998-018-0096-x
Publication status	Published - 15 Nov 2018

Keywords

Preparation
Stearyl acrylate
Water repellent
Waterborne polyurethane

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10.1007/s11998-018-0096-x

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title = "Preparation and properties of waterborne polyurethane modified by stearyl acrylate for water repellents",

abstract = "Double bond end-capped waterborne polyurethane (DWPU) was synthesized from toluene diisocyanate, hydroxypropyl polysiloxane, trimethylolpropane, N-methyldiethanolamine, and hydroxyethyl acrylate. Then water repellents with long-chain hydrophobic alkyl structure were obtained by radical copolymerization of stearyl acrylate (SA) and DWPU. The waterproofing performance and other properties of the water repellents were studied for different SA contents. The results showed that, for the water repellent with SA content of 50 wt%, the water absorption of the film reduced to 4.29% while the water contact angle of fabric coated by the water repellent rose to 141.5°. In addition, the optimum SA content of the water repellent was 40%, achieving the highest score of 85 points in the waterproof performance evaluation.",

keywords = "Preparation, Stearyl acrylate, Water repellent, Waterborne polyurethane",

author = "Lixia Sheng and Xuetong Zhang and Zhen Ge and Zhu Liang and Xiaoli Liu and Chunpeng Chai and Yunjun Luo",

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T1 - Preparation and properties of waterborne polyurethane modified by stearyl acrylate for water repellents

AU - Sheng, Lixia

AU - Zhang, Xuetong

AU - Ge, Zhen

AU - Liang, Zhu

AU - Liu, Xiaoli

AU - Chai, Chunpeng

AU - Luo, Yunjun

PY - 2018/11/15

Y1 - 2018/11/15

N2 - Double bond end-capped waterborne polyurethane (DWPU) was synthesized from toluene diisocyanate, hydroxypropyl polysiloxane, trimethylolpropane, N-methyldiethanolamine, and hydroxyethyl acrylate. Then water repellents with long-chain hydrophobic alkyl structure were obtained by radical copolymerization of stearyl acrylate (SA) and DWPU. The waterproofing performance and other properties of the water repellents were studied for different SA contents. The results showed that, for the water repellent with SA content of 50 wt%, the water absorption of the film reduced to 4.29% while the water contact angle of fabric coated by the water repellent rose to 141.5°. In addition, the optimum SA content of the water repellent was 40%, achieving the highest score of 85 points in the waterproof performance evaluation.

AB - Double bond end-capped waterborne polyurethane (DWPU) was synthesized from toluene diisocyanate, hydroxypropyl polysiloxane, trimethylolpropane, N-methyldiethanolamine, and hydroxyethyl acrylate. Then water repellents with long-chain hydrophobic alkyl structure were obtained by radical copolymerization of stearyl acrylate (SA) and DWPU. The waterproofing performance and other properties of the water repellents were studied for different SA contents. The results showed that, for the water repellent with SA content of 50 wt%, the water absorption of the film reduced to 4.29% while the water contact angle of fabric coated by the water repellent rose to 141.5°. In addition, the optimum SA content of the water repellent was 40%, achieving the highest score of 85 points in the waterproof performance evaluation.

KW - Preparation

KW - Stearyl acrylate

KW - Water repellent

KW - Waterborne polyurethane

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VL - 15

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ER -

Preparation and properties of waterborne polyurethane modified by stearyl acrylate for water repellents

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Keywords

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