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Engineered Materials Handbook Desk Edition

Edited by
Michelle M. Gauthier
Michelle M. Gauthier
Raytheon Company
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ASM International
ISBN electronic:
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Book Chapter

Sheet Molding Compounds

Page range:
535 - 538


Sheet molding compound (SMC) is a composite material - consisting of glass-fiber-reinforced polyester in a resin matrix - that’s available in sheet form for the production of compression-molded parts. This article discusses the components incorporated into the resin paste, including catalysts, fillers, thickeners, pigments, thermoplastic polymers, flame retardants, and ultraviolet absorbers, and how to optimize them to achieve the desired processing and molding characteristics and the necessary properties in the resulting parts. The article also presents several mixing techniques, including batch, batch/continuous, and continuous mixing, and describes the operations of continuous-belt and beltless machine type SMCs.

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1995. "Sheet Molding Compounds", Engineered Materials Handbook Desk Edition, Michelle M. Gauthier

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