A new paper reports a novel scratch-resistant and healable automotive clearcoat that can not only protect the substrate surface but also facilitate scratch repair.

一篇新论文介绍了一种新型的抗刮擦和可修复的汽车透明清漆，该清漆不仅可以保护基材表面，还可以帮助修复刮擦。 

The coatings showed sufficient mechanical properties to be used as automotive clearcoats.

该涂料具有汽车透明清漆所需要的相应机械性能.

A self-healable disulfide polyurethane diol adduct (DSPUDA) was synthesised via step-growth polymerisation with bis(4-hydroxyphenyl) disulfide, isophorone diisocyanate, and poly(tetrahydrofuran).

研究人员以双(4-羟基苯基)二硫化物,异佛尔酮二异氰酸酯和聚四氢呋喃为原料，采用逐步聚合法制备出一种自修复型二硫聚氨酯二醇加合物(DSPUDA)。 

足够的机械性能 

The mechanical properties of the clearcoat surfaces were investigated using nano-indentation and pendulum hardness tests. The healing efficiency and mechanical properties of the prepared clearcoats exhibited an inverse trade-off relationship. Nevertheless, optimising the proportion of reversible disulfide bonds of the DSPUDA in the polyacrylate-based urethane networks not only resulted in superior scratch healing and scratch resistance but also maintained sufficient mechanical properties for the coatings to be used as automotive clearcoats.

研究人员采用纳米压痕试验和摆锤硬度试验对涂层表面的机械性能做了研究。所制备的透明涂层的愈合效率与机械性能一般呈负交换关系。 然而，在聚丙烯酸酯基聚氨酯网络中，优化DSPUDA的可逆二硫键比例，不仅可以获得优异的刮伤愈合和抗刮伤性能，而且还可以保持适宜的机械性能，使涂层可以用于汽车透明清漆。

 

英文原文引自: https://www.european-coatings.com/articles/2021/11/scratch-healable-automotive-clearcoats

图源: SkloStudio - Pixabay (symbol image).

翻译:九维-VL. 翻译内容未经同意不得转载.