Tetraglycidyl epoxy resins and graphite fiber composites cured with flexibilized aromatic diamines | Zendy

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Tetraglycidyl epoxy resins and graphite fiber composites cured with flexibilized aromatic diamines

Author(s) -

Delvigs Peter

Publication year - 1986

Publication title -

polymer composites

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.577

H-Index - 82

eISSN - 1548-0569

pISSN - 0272-8397

DOI - 10.1002/pc.750070207

Subject(s) - materials science , epoxy , composite material , curing (chemistry) , diamine , glass transition , fracture toughness , toughness , graphite , adhesive , moisture , polymer , polymer chemistry , layer (electronics)

Studies were performed to synthesize new ether modified, flexibilized aromatic diamine hardeners for curing epoxy resins. The effect of moisture absorption on the glass transition temperatures of a tetraglycidyl epoxy, MY 720, cured with flexibilized hardeners and a conventional aromatic diamine was studied. Unidirectional composites, using epoxy‐sized Celion 6000 graphite fiber as the reinforcement, were fabricated. The room temperature and 300°F mechanical properties of the composites, before and after moisture exposure, were determined. The Mode I interlaminar fracture toughness of the composites was characterized, using a double cantilever beam technique to calculate the critical strain energy release rate, G IC .

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