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Development of low moisture absorbing sheet molding compound

Duane B. Priddy - Mar 10, 2010


Technical Paper - This article reviews the role of sheet molding compound (SMC) constituent components in controlling the moisture absorption of the final molded panels. A variety of polyester resins, low profile additives, and fillers were exposed to high humidity, defined as 90% relative humidity at 40°C, for extended hours. It was concluded that calcium carbonate, which is the most common filler for SMC, at a...

Source : Kia, Hamid G. Materials and Processes Lab, General Motors R+D Center, Warren, MI, USA. Journal of Composite Materials (2010), 44(1), 55-74. Publisher: Sage Publications

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