Preparation and characterization of new fluoropolyurethane elastomers

化学工业与工程

Chemcial Industry and Engineering

2023, Vol. 40

Issue (4) :31-36 DOI: 10.13353/j.issn.1004.9533.20210846

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Preparation and characterization of new fluoropolyurethane elastomers

WANG Jie¹, GAO Shangdong¹, ZHANG Huishu¹, LYU Xuchen¹, XIAO Libai², REN Xiangkui¹

1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;
2. Science and Technology on Combustion and Explosion Laboratory, Xi'an Modern Chemistry Research Institute, Xi'an 710065, China

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Abstract A series of fluoropolyurethane elastomers were prepared by introducing long-chain fluoropolyacrylate into polyurethane system through chemical bonds. The structure of the materials was confirmed by Fourier Infrared Spectroscopy. The aggregate structure, mechanical properties and hydrophobic properties of the materials were studied in detail by X-ray diffraction, stress-strain, differential scanning calorimetry and contact angle experiments. The experimental results show that the properties of fluoropolyurethane are closely related to the number of side chain fluorine atoms. With the increase of the number of fluorine atoms, the contact angle of polyurethane increases, the surface free energy decreases, and the hydrophobicity is significantly improved. At the same time, the crystallinity and mechanical properties of the material can be adjusted by the number of fluorine atoms in the side chain. When the number of fluorine atoms is 8, the fluoropolyurethane has the best mechanical property.

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	WANG Jie
	GAO Shangdong
	ZHANG Huishu
	LYU Xuchen
	XIAO Libai
	REN Xiangkui

Keywords： fluoropolymer polyurethane elastomers hydrophobicity

Received 2021-11-15;

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WANG Jie, GAO Shangdong, ZHANG Huishu, LYU Xuchen, XIAO Libai, REN Xiangkui.Preparation and characterization of new fluoropolyurethane elastomers[J] Chemcial Industry and Engineering, 2023,V40(4): 31-36

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