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Characterization of modified bismaleimide resin
Author(s) -
Yuan Qiaolong,
Huang Farong,
Jiao Yangsheng
Publication year - 1996
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/(sici)1097-4628(19961017)62:3<459::aid-app3>3.0.co;2-p
Subject(s) - prepolymer , curing (chemistry) , thermal stability , methylene , materials science , flexural strength , toughness , composite material , phenol , activation energy , modulus , polymer chemistry , chemistry , organic chemistry , polyurethane
A new high‐temperature resin system based on methylene dianiline bismaleimide (MDA‐BMI) chemistry is studied. This is a two‐component resin system which is modified by 2,2′‐methylene‐bis[4‐methyl‐6‐(2‐propenyl)] phenol (MBMPP) and has excellent thermal mechanical properties and good toughness characteristics. This paper discusses in detail some of the characteristics of the prepolymer by reacting the two components in addition to the cured system's properties. The prepolymer has very good stability at 100–120°C with very minimal molecular weight increase. The reaction order for curing prepolymer is almost 1. The activation energy of the curing reaction is 74.12 KJ/mol. The flexural strength and modulus of the cured modified MDA‐BMI and their retention at 250°C are 124 and 3774.6 MPa and 69 and 78%, respectively. © 1996 John Wiley & Sons, Inc.