Elastomer-Modified Vinyl Esters as Structural Adhesives

Autor: C. D. Guiley, A. R. Siebert, D. R. Egan, R. S. Drake, P. J. Pearce
Rok vydání: 1995
Předmět:
Zdroj: The Journal of Adhesion. 49:245-259
ISSN: 1545-5823
0021-8464
DOI: 10.1080/00218469508014358
Popis: Vinyl esters (epoxy-methacrylates) are preeminent chemical-and corrosion-resistant materials. Based primarily on addition-esterified cpoxy resins with methacrylic acid and diluted with styrene monomer, several products are available based on dicpoxide structure, molecular weight, modifier type (nitrile rubber, urethane. elycol, e.g.) and blends with styrenated polyester resins. A new dass of vinyl ester urethanes has also become commercially available. Elastomer modification of both types has shown that the fracture energy of epoxv vinyl esters can be enhanced to have a four-fold improvement Despite this, the elastomer-modified vinyl esters have not found use as a basis for free-radical curing structural adhesives. Addition of an epoxy-terminated rubber (ETBN) or a methacrylated-vinyl terminated rubber (VTBNX) to previously elastomermodified vinyl ester resin significantly improves overlap shear, T-peel, and bulk fracture propertics. This suggests potential application in structural adhesive deve...
Databáze: OpenAIRE