首页> 外文会议>Symposium on durability of building and construction sealants and adhesives >The Mechanism of Adhesion Improvement of Elastomeric Silicone Sealants to Difficult-to-Bond Polymeric Substrates through Reactive or Interpenetrating Molecular Brushes
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The Mechanism of Adhesion Improvement of Elastomeric Silicone Sealants to Difficult-to-Bond Polymeric Substrates through Reactive or Interpenetrating Molecular Brushes

机译:通过反应性或互穿分子刷提高弹性体硅酮密封胶对难粘合聚合物基材的粘合力的机理

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High-quality and durable adhesion of elastomeric adhesives to metallic, ceramic, and organic substrates is essential to a broad range of industries, e.g., building and construction, automotive, electronic, aerospace, biomedical, and others. The principles of engineering substrate surfaces through grafted connector molecules are discussed in this paper. In particular, two important modes of interaction for surface-grafted "molecular brushes" are investigated and experimentally verified. It is demonstrated that the inclusion of silicone- and/or amine-terminated graft molecules, such as silanes or polyethyleneimines, at polymer interfaces, results in the formation of strong molecular bridges between a range of organic substrates and elastomeric sealants leading to significantly improved bonding. The technology has been successfully adopted by global automotive industry for improving adhesion of a variety of adhesives and coatings to polyolefinic substrates.
机译:弹性体粘合剂在金属,陶瓷和有机基材上的高质量和持久粘合力对许多行业至关重要,例如建筑和建筑,汽车,电子,航空航天,生物医学等。本文讨论了通过接枝的连接剂分子工程化基材表面的原理。特别是,对表面接枝的“分子刷”的两种重要的相互作用模式进行了研究和实验验证。结果表明,在聚合物界面处包含以硅酮和/或胺为末端的接枝分子,例如硅烷或聚乙烯亚胺,会导致一系列有机底物与弹性密封剂之间形成牢固的分子桥,从而显着改善粘合。该技术已被全球汽车工业成功采用,以改善各种粘合剂和涂料对聚烯烃基材的粘合性。

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