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Properties of epoxy resins cured with ring-alkylated m-phenylene diamine blends

✍ Scribed by Robson F. Storey; Sudhakar Dantiki; J. Patrick Adams

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
334 KB
Volume
40
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

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.

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