Curing characteristics of o-cresol novolac epoxy resin modified by bismaleimide

✍ Scribed by Whan Gun Kim; Tae Young Nam

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 373 KB
• Volume: 34
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(19960430)34:6<957::aid-pola4>3.0.co;2-f

✦ Synopsis

Curing characteristics of o-cresol novolac epoxy resin modified by 4,4-diaminodiphenylmethane bismaleimide (DDM-BMI) using FTIR were investigated and the glass transition temperature was measured. With the addition of DDM as hardener, the relative curing reaction conversion of DDM-BMI increased with equivalent weight ratio [R, = (equiv wt summation of epoxy and DDM-BMI)/equiv wt of DDM] and weight ratio of epoxy and DDM-BMI ( R p = wt of epoxy resin/wt of DDM-BMI). Using phenol novolac resin (PN) as hardener, the curing reaction conversion of DDM-BMI was hardly changed, but the variation of that in the epoxy resin was observed with Rz change.