An epoxy-terminated structural adhesive. II. Curing, adhesive strength, and flammability characteristics

✍ Scribed by Santi N. Ghosh; Sukumar Maiti

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 169 KB
• Volume: 63
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19970207)63:6<683::aid-app1>3.0.co;2-j

✦ Synopsis

Curing characteristics and the curing schedule of an epoxy-terminated polymer (ETP) were investigated using diaminodiphenyl ether (DADPE), diaminodiphenyl sulfone (DADPS), diaminodiphenyl methane (DADPM), and the hardener of a commercial epoxy, two-pack Araldite (Ciba-Geigy), as curing agents. The adhesive strength of the ETP was measured by various ASTM methods like lap-shear, cohesion, and adhesion tests on metal-metal, wood-metal, wood-wood, and metal-polymer interfaces. All these results are compared with Araldite GY250, a two-pack Araldite (Ciba-Geigy). The flame retardancy of virgin ETP, ETP-Araldite GY250 blends, and various commercial-grade fire-resistant epoxies was measured. A structure flammability correlation for the ETP-Araldite GY250 blends is also reported.