Thick section compression molded composites

B - Operations – Transporting – 29 – C

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18/955

B29C 43/52 (2006.01) B29C 35/02 (2006.01) F02F 7/00 (2006.01)

Patent

CA 1113216

THICK SECTION COMPRESSION MOLDED COMPOSITES ABSTRACT OF THE DISCLOSURE Mechanical properties of compression molded com- posites having thick sections and made from molding com- pounds comprising thermosetting resin and reinforcing fiber in a thickened dispersion are improved by a preheating stage and mold cycle times that are longer than the time necessary to reach the highest peak exotherm temperature of the composite during molding. Slow post cooling allows for development of properties especially when mold opening times are shorter than that required for removal of all thermal gradient.

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