A novel waterborne polyurethane coating modified by highly dispersed nano‐boron carbide particles | Zendy

Sun Yingchun | Zendy; Wu Yan | Zendy; Yang Feng | Zendy; Wu Xinyu | Zendy; Ding Guanfen | Zendy

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A novel waterborne polyurethane coating modified by highly dispersed nano‐boron carbide particles

Author(s) -

Sun Yingchun,

Wu Yan,

Yang Feng,

Wu Xinyu,

Ding Guanfen

Publication year - 2021

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.50214

Subject(s) - materials science , polyurethane , boron carbide , nano , coating , polyethylene glycol , dispersion (optics) , scanning electron microscope , peg ratio , aqueous solution , polypropylene glycol , chemical engineering , microstructure , nanoparticle , composite material , nanotechnology , organic chemistry , chemistry , physics , optics , finance , engineering , economics

In this study, waterborne polyurethane (WPU) coatings were modified by adding various compositions of nano‐boron carbide (nano‐B 4 C) particles. In order to achieve proper dispersion of nano‐B 4 C in WPU and increasing chemical interactions between them, the nano‐B 4 C particles were treated with polyethylene glycol (PEG) or polypropylene glycol (PPG). The modified surface and microstructure of nano‐B 4 C were characterized by Fourier transform infrared, scanning electron microscopy and transmission electron microscopy. The deposition experiment was designed to evaluate the dispersion effect of nano‐B 4 C in PEG or PPG aqueous solution. The physical performance of nano‐B 4 C modified WPU coatings was measured following the national standards of paints and vanishes. The results revealed that the PEG6000 not only enhanced the interaction between nano‐B 4 C and WPU but also exhibited a remarkable ability to improve the physical performance of WPU coating. The coating with 15 wt% of nano‐B 4 C addition exhibited the best performance in terms of abrasion and hardness, which could be attributed to the best uniform dispersion of nano‐B 4 C particles in PEG6000 aqueous solution.

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