Abstract
In this article, the mechanism of the effects of nano-TiO2 on the properties of automotive topcoat is discussed. Based on the original thought that nano-TiO2 may improve the aging property, a research is carried out into the effects of nano-TiO2 on the properties of automotive topcoat, and the formulation design of nano-TiO2 coating is optimized. The coating properties such as glossiness, adhesion, resisting impact strength, hardness, water fastness and resistance to aging are measured by experiments. The results show that with 1.0~2.0 percent of nano-TiO2 content, the aging resistance of the coating increases by approximaSubscript texttely 20 percent with higher glossiness, while adhesion, impact strength, hardness and water fastness are not meaningfully improved.
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