Title: Polyether-Based Benzoxazine Monomers as Process Aids and Tougheners in Glassy Network Composites

Authors: Lawrence La Beaud, Catherine A. Sarantes, Dr. Jefferey Wiggins

DOI: 10.33599/nasampe/s.22.0753

Abstract: Traditional benzoxazine networks offer excellent chemical and mechanical properties in comparison to traditional epoxy thermoset matrices, however, the high melt temperatures of corresponding monomer inhibit good impregnation of dry fibers. Low viscosity benzoxazine (BOX) monomers have been synthesized in the bulk using commercially available poly-propylether amines (Huntsman Jeff-amine D230, D400), a phenol and paraformaldehyde in a one-step batch reaction condition. PE-BOX monomers were thermally cured (catalyst-free) to determine matrix thermal and viscoelastic properties via Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA). Rheology of uncured PE-BOX monomers and blends was also examined. The addition of 25 wt% of a single PE-BOX monomer to a Bisphenol A (BPA-a) BOX formulation decreased viscosity 35% at 120°C. Overall, improvements in matrix flow at process temperatures afforded the development of novel BOX-based thermoset composites via standard prepreg filming and autoclave cure methods.

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Conference: SAMPE 2022

Publication Date: 2022/05/23

SKU: TP22-0000000753

Pages: 12

Price: $24.00