Title: Surfacing and Lightning Strike Protection of Bismaleimide Composites with a Novel High Temperature Surfacing Film

Authors: Jessica L. Wallick

DOI: 10.33599/nasampe/s.21.0449

Abstract: Bismaleimide (BMI) adhesives and prepregs are key materials for aerospace structures due to their high temperature capabilities and chemical and environmental resistance compared to their epoxy counterparts. In some applications, where BMIs are predominately utilized for their high Tg and mechanical properties, there is also a need to provide good surface quality and lightning strike protection (LSP). While epoxy based films for surfacing and LSP are very prevalent in the industry, there are minimal options available for BMI composite structures. In this paper, a novel BMI-based composite structure that provides excellent surfacing, fluid resistance and LSP will be discussed. The potential for incorporating lightweight surfacing films into BMI composites for surfacing and LSP in high temperature applications will be demonstrated.

References: 1. Sang, Junjie and Dalip Kohli. 2017. Surfacing Film for Composite Structures and Method of Making the Same. USA. US 9,676,961 B2. 13 Jun, 2017. 2. “Surfacing for Smooth Flying.” Solvay. November 19, 2019. December 15, 2020 <https://www.solvay.com/en/article/surfacing-smooth-flying>. 3. “Surfacing Films Improve Safety, Appearance and Processing Time.” Composites World, May 1, 2018. December 15, 2020 <http://www.compositesworld.com/articles/surfacing-films-improve-safety-appearance-and-processing-time>. 4. “Properties and Applications of Toray High Temperature Composites.” Azo Materials, 28 August 2014, https://www.azom.com/article.aspx?ArticleID=11255.

Conference: SAMPE NEXUS 2021

Publication Date: 2021/06/29

SKU: TP21-0000000449

Pages: 15

Price: FREE