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Epoxy withstands up to 500F

Posted: 01 Apr 2008 ?? ?Print Version ?Bookmark and Share

Keywords:EP34CA Master Bond? resin epoxy? resistant heat?


Master Bond Inc. has developed EP34CA, a polyfunctional, heat resistant epoxy resin designed for use in high-performance composite structures and in potting and casting applications. When used in conjunction with select hardeners, EP34CA produces a low viscosity system, which is for filament windings of glass, graphite and Kevlar fibres and boron composites, as well as pultruded structures. Cured composite structures have a high glass transition temperatures (Tg), outstanding elevated temperature properties, superior chemical resistance and good radiation resistance. It can be used up to 260C (500F) service temperatures. When used as a matrix system for graphite composites, EP34CA exhibits very good initial properties and good retention of those properties up to 200C. The mechanical properties vs. time and temperature of unidirectional graphite composites based on Modmore Type II T fibre and a matrix of EP34CA/EP34C yield a flexural strength of 236,000 psi (1630 MN/m?) a flexural modulus of 17.8 x106 psi (123 GN/m?) and interlaninar shear strength of 12,700 psi (87.5 MN/m?).

According to Master Bond, Systems based on EP34CA exhibit long working life at room temperature when formulated with aromatic amine or anhydride hardeners. When Master Bond EP34CA is combined with hardener Master Bond EP34B, it provides a manufacturer with a low viscosity liquid with a pot life of at least 2hrs at 25C. When combined with aromatic hardeners such as EP34C, it gives a low viscosity liquid with a pot life of 8hrs at 40C and 24hrs at 25C.

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