Fusion assembly is a highly promising technique for joining thermoplastic composite to thermoset composites, enabling the use of both the most affordable composite material and process for each substructure. However, some major challenges need to be addressed such as functionalizing the thermoset composite surface through co-curing with an appropriate thermoplastic interlayer or realizing a fast and robust welding process that meets all quality and mechanical requirements. In this paper, we investigated the potential of polyetheretherketone (PEEK) and its amorphous (PEEK A) and semicristalline (PEEK SC) states as interlayer materials, co-cured onto thermoset composites. A surface preparation involving the atmospheric plasma process demonstrated that both PEEK state materials can be used as interlayer with favorable adhesion properties. The influence of the plasma treatment on surface properties and morphology was also experimentally characterized.

中文翻译：

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用于红外混合焊接的热固性复合材料的表面功能化

熔融组装是将热塑性复合材料与热固性复合材料连接起来的极有前途的技术，它使每个子结构都可以使用最经济的复合材料和工艺。但是，需要解决一些主要挑战，例如通过与适当的热塑性中间层共固化来使热固性复合材料表面功能化，或者实现满足所有质量和机械要求的快速而坚固的焊接工艺。在本文中，我们研究了将聚醚醚酮（PEEK）及其无定形（PEEK A）和半结晶态（PEEK SC）用作夹层材料并共固化到热固性复合材料上的潜力。涉及大气等离子体工艺的表面处理表明，两种PEEK态材料都可以用作具有良好粘合性能的中间层。