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Recent work on a structural sheet molding compound with more than 60% by weight reinforcements of E-glass and S-2 Glass® in a low-profile polyester resin system demonstrates high-performance capability and versatility that permit tailoring of the composite properties to a specific application. A full range of room-temperature mechanical properties was developed for various combinations of randomly oriented chopped glass to continuous glass fiber reinforcement, as well as chopped glass core-continuous glass skin laminates. Test panels were molded as flat symmetric laminates, and both ply-reinforcement configuration and laminate lay-up sequence were varied. Mechanical properties investigated included tensile strength, compressive strength, flexural strength, shear strength, impact strength, specific gravity, and Poisson's ratio. It was determined that some mechanical properties can be significantly increased by the use of continuous fibers and S-2 Glass reinforcement.
Senior engineer, Owens-Corning Fiberglas Technical Center, San Diego, CA
Stock #: CTR10772J