| 摘要 |
A polyester resin and reinforcement composite for use in the manufacture of glass fiber-reinforced polyester products is disclosed. The composite is prepared using an initiator which has been microencapsulated in order to prevent initiator-induced cross-linking of the resin reactants. The initiator is released during the molding of the composite by rupture of the microcapsules due to internal vapor pressure developed at a preselected temperature. The encapsulation of the initiator increases the storage life and temperature stability of the composites prior to molding. The encapsulation of the initiator also provides improved homogeneity and increased flowability of the composites during molding, an enables the provision of molded polyester products having higher degrees of cure and more defect-free finish surfaces.
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