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Properties of epoxy resins cured with ring‐alkylated m ‐phenylene diamine blends
Author(s) -
Storey Robson F.,
Dantiki Sudhakar,
Adams J. Patrick
Publication year - 1990
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1990.070400105
Subject(s) - materials science , glass transition , differential scanning calorimetry , diamine , diglycidyl ether , epoxy , acrylonitrile , ultimate tensile strength , eutectic system , ether , composite material , benzene , bisphenol a , natural rubber , polymer chemistry , copolymer , polymer , chemistry , organic chemistry , microstructure , physics , thermodynamics
Diglycidyl ether of bisphenol‐A was cured, individually, with diaminoisopropyl benzene (DAIPB), diaminoethyl benzene (DAEB), blends of DAIPB/DAEB (up to 40 wt % DAEB), and DAIPB modified with up to 5 wt % amine‐terminated poly(butadiene‐co‐acrylonitrile) liquid rubber (ATBN). For each diamine system glass transition temperature (differential scanning calorimetry) and room temperature tensile properties (Instron) were determined. Blends of DAIPB/DAEB produced cured resins displaying greatly increased tensile strength (up to 50% higher) and slightly lower glass transition temperature compared with resins cured with either diamine alone. DAIPB modified with ATBN yielded moderately improved tensile properties over DAIPB alone. Blends of DAIPB/DAEB (from 10 to 40 wt % DAEB) were observed to be eutectic liquids at room temperature.