Effect of Processing Variables on the Mechanical and Thermal Properties of Sheet Molding Compound

RW Tung

doi:10.1520/STP29378S

SYMPOSIA PAPER Published: 01 January 1982

STP29378S

Effect of Processing Variables on the Mechanical and Thermal Properties of Sheet Molding Compound

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The increasing usage of sheet molding compound (SMC) materials in the automotive industry for weight reduction motivated this study on the effect of processing on SMC properties. The processing variables investigated were cure time, mold temperature, and mold pressure. A total of 15 different molding conditions were used to produce flat SMC panels from a laboratory mold. Tensile, flexural, and impact properties and heat deflection temperatures of these sample panels were measured. It was found that while the processing variables studied have little effect on the mechanical properties, they have a more severe effect on the thermal property.

Author Information

Tung, RW

General Motors Manufacturing Development, General Motors Technical Center, Warren, Mich.

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Details

Developed by Committee: E08

Pages: 50–63

DOI: 10.1520/STP29378S

ISBN-EB: 978-0-8031-4837-6

ISBN-13: 978-0-8031-0697-0

Effect of Processing Variables on the Mechanical and Thermal Properties of Sheet Molding Compound

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