Portal de Periódicos da CAPES

Effect of coupling agents on thermal and electrical properties of mica/epoxy composites

1995; Wiley; Volume: 56; Issue: 10 Linguagem: Inglês

10.1002/app.1995.070561015

1097-4628

P. Bajaj, Ν. K. Jha, S. Anand Kumar,

Epoxy Resin Curing Processes

Abstract The influence of 3‐aminopropyltriethoxysilane, 3‐glycidyloxypropyltrimethoxysilane, and neoalkoxytric(dioctyl pyrophosphato)zirconate on thermal expansion behavior, dielectric strength, and arc resistance of mica/epoxy composites has been investigated. The addition of mica up to 30% resulted in the reduction of thermal expansion with respect to neat resin. However, the coefficient of linear thermal expansion of 30% mica treated with aminosilane was the least among the various coupling agent‐coated filler/epoxy composites. Mica (30%)/epoxy composites showed the highest dielectric strength values (26 kV/mm), but the highest arc resistance was obtained in zirconate‐treated mica (30%)/epoxy composite. © 1995 John Wiley & Sons, Inc.