Epoxy matrices for filament-wound carbon fiber composites

Autor:	C.M. Walkup, Roger J. Morgan
Rok vydání:	1987
Předmět:	Toughness Materials science Diglycidyl ether Polymers and Plastics Epoxide General Chemistry Epoxy Surfaces Coatings and Films chemistry.chemical_compound chemistry Diamine visual_art Materials Chemistry visual_art.visual_art_medium Molecule Amine gas treating Composite material Embrittlement
Zdroj:	Journal of Applied Polymer Science. 34:37-46
ISSN:	1097-4628 0021-8995
DOI:	10.1002/app.1987.070340103
Popis:	Epoxies suitable for filament-winding fibrous composites must be processible at ambient temperatures, nontoxic, chemically simple, undergo full cure at ≤ 100°C and, also, be tough and exhibit a Tg > 120°C. In this paper, we report the cure characteristics, processibility, toxicity, and mechnical and physical properties of a number of amine-cured diglycidyl ether of bisphenol-A (DGEBA) epoxide candidate systems suitable for filament-wound carbon fiber composites. 2,5-Dimethyl-2,5-hexane diamine (DMHDA)-cured DGEBA epoxy was found to be the most promising candidate. The good processibility and thermal properties, together with the low cure characteristics of the DGEBA–DMHDA epoxy system, are discussed in terms of molecular structure of the amine molecule. The network structural parameters that control epoxy toughness and subsequent embrittlement upon plastic flow are discussed. Evidence is presented for plastic flow-induced thermal and mechanical property deterioration of epoxies as a result of network chain scission.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c45c187c7d5d1deac04976b99ea96875 https://doi.org/10.1002/app.1987.070340103 Zobrazit plný text záznamu Plný text