Synthesis of durable hydrophobic fluorinated polyurethanes with exceptional cavitation erosion resistance

被引：13

作者：

Li, Ning ^{[1
,2
]}

Yang, Rui ^{[1
,2
]}

Tian, Ye ^{[1
,2
]}

Lu, Pengfei ^{[1
,2
]}

Huang, Nengliang ^{[1
,2
]}

Li, Hua ^{[1
,2
,3
]}

Chen, Xiuyong ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Cixi Inst Biomed Engn, Ningbo Inst Mat Technol & Engn, Zhejiang Engn Res Ctr Biomed Mat, Ningbo 315201, Peoples R China

[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo 315201, Peoples R China

[3] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2023年 / 177卷

关键词：

Fluorinated polyurethane; Synthesis; Hydrophobic; Cavitation erosion resistance; COATINGS; PERFORMANCE; CRYSTALLINITY; DEGRADATION; ELASTOMERS; CORROSION; SURFACES; BIOCIDE;

D O I：

10.1016/j.triboint.2022.107973

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This study prepared a series of fluorinated polyurethane (FPU) with different fluorine content via changing the content of hydroxy-terminated liquid fluorine elastomer (LFH) for achieving good cavitation erosion resistance. The results showed that the FPU samples had much superior hydrophobicity, thermal stability, mechanical properties, and cavitation erosion resistance compared to the polyurethane (PU). The FPU synthesised from 20 % LFH exhibited the best properties, and its erosion rate during cavitation erosion was only 26.3 % of the PU. In addition, the simulation results suggest that the fluorine-containing soft segments in FPU were responsible for the improved properties because these soft segments would not be subjected to hydrolysis and exhibited good stability at a high temperature.

引用

页数：11

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