METHOD OF COMPRESSION MOLDING

Mechanical properties of compression molded composites having thick sections and made from molding compounds 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 hig...

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Bibliographische Detailangaben
Hauptverfasser:	MALLICK, PANKAJ KUMAR, RAGHUPATHI, NARASIMHAN
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING COMBUSTION ENGINES CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Mechanical properties of compression molded composites having thick sections and made from molding compounds 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 gradients.