Release properties of plasma polymeric coated polymer films and adhesive strength of transferred polyurethane coatings to fiber-reinforced thermosets

IF 1.8 Q3 ENGINEERING, MANUFACTURING

Advanced Manufacturing: Polymer & Composites Science Pub Date : 2022-02-02 DOI:10.1080/20550340.2022.2033539

Joachim Scheller, Thorben Brenner, M. Ott, T. Fladung, P. Baur

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引用次数: 2

Abstract

Abstract An investigation of plasma-polymeric coatings on stretchable polymer films utilizing hexamethyldisiloxane and oxygen has been performed. The influence of the plasma parameters on release properties to polyurethane paints as well as the unpreventable transfer of traces of plasma-polymeric coatings to paints or thermosets were investigated. The elemental composition and physical properties have been analyzed using contact angle measurement and X-ray photoelectron spectroscopy (XPS) with peak fitting. The release properties of the coatings are discussed. The results show that a higher ratio of oxygen to hexamethyldisiloxane during the plasma process leads to an increase of peel forces to polyurethane paints. The XPS shows that the transfer of plasma coating to the paint is on average below 0.4 at% of silicon, which is below the critical fraction of 2 at% silicon reported in the literature. Therefore, the clear-coat paint shows no difference in its adhesion to thermosets between untreated and pretreated surfaces. Graphical Abstract

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等离子体聚合物涂层聚合物薄膜的释放性能及转移聚氨酯涂层对纤维增强热固性材料的粘接强度

摘要研究了利用六甲基二硅氧烷和氧气在可拉伸聚合物薄膜上制备等离子体聚合物涂层。研究了等离子体参数对聚氨酯涂料释放性能的影响，以及等离子体聚合物涂料向涂料或热固性涂料不可避免的转移。利用接触角测量和x射线光电子能谱(XPS)峰拟合分析了其元素组成和物理性质。讨论了涂层的脱模性能。结果表明，在等离子体过程中，较高的氧与六甲基二硅氧烷的比例会导致聚氨酯涂料剥离力的增加。XPS表明，在硅含量为%时，等离子体涂层到油漆的转移率平均低于0.4，低于文献报道的硅含量为%时的临界分数2。因此，透明涂层在未处理和预处理表面之间的热固性附着力没有差异。图形抽象

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