Epoxy Resins
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Definition:
A family of thermosetting resins which were originally made by condensing epichlorohydrin and bisphenol A. Epoxy resins are now more generally formed from low molecular weight diglicidyl ethers of bisphenol A. Depending on molecular weight, the resins range from liquids to solid resins, and can be cured with amines, polyamides, anhydrides or other catalysts. The solid resins are often modified with other resins and unsaturated fatty acids. Epoxy resins are also widely used in the reinforced plastics field because they have good adhesion to glass fibers and in electrical composites because their thermal expansion can be tailored to match that of copper. In addition, their low viscosities are effective in wetting various reinforcing materials. Glass fiber reinforced epoxies can be processed by compression molding, filament winding, hand lay-up, continuous pultrusion, and centrifugal casting.
Definition Copyright ©1989 CRC Press LLC. All rights
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