Title: Development and Evaluation of Mechanical Properties of Polyethersulfone / Electron Curable Resin System for New AFP Process of CFRP

Authors: Manato Kanesaki, Masaki Inagaki, Hiroshi Yamashita, Shintaro Chofuku, Toru Kamita, Hirofumi Nishida, Kiyoshi Uzawa

DOI: 10.33599/nasampe/s.21.0428

Abstract: The authors have been investigating the applicability of automated fiber placement (AFP) process using carbon fiber-reinforced thermoplastics (CFRTP) to the main propulsion tank molding for the purpose of cost reduction and mass-production of rocket tank. Since polyether sulfone (PES), one of super engineering plastics, has a high viscosity even at elevated temperatures above its melting point hindering the impregnation of the resin into reinforcing fiber bundle, authors devised a new method that includes reducing the melt viscosity of PES by mixing electron beam (EB)-curable monomers and regaining the original thermal and mechanical performance by EB irradiation after tape lay-up. Specifically, triallyl isocyanurate having allyl groups and polyamide 6 having aliphatic chains that generate radicals by EB irradiation were kneaded into PES. The melt viscosity and the tensile strength after EB irradiation of this modified PES were evaluated. As a result, it was confirmed that this system can realize the desired function.

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Conference: SAMPE NEXUS 2021

Publication Date: 2021/06/29

SKU: TP21-0000000428

Pages: 13

Price: FREE