Utilization of glass fiber-reinforced polyester laminate wastes
Polimery 2002, No 2, 110
Glass fiber-reinforced polyester resin wastes were extracted with methylene chloride (Figs. 1, 2) to yield a comminuted fibrous filier (contg. 70—80 wt. % of glass fibers) and a resin powder. The filier and the powder were re-used as filiers in thermoplastic polymers (PP, Tables 3, 4; polyamide, Table 5), thermosetting phenol molding compounds (Table 6), epoxy resins (Tables 7, 9), and polyester resins (Tables 8, 10). The fibrous filier reclaimed, when used in each polyrner examined as a partial or a 100% substitute to replace mineral fillers, glass fibers or wood flour (in phenol molding compounds), was found not to deteriorate, and sometimes even to enhance, the mechanical properties of the polymers. The resin powder was found useful for partially or totally replacing mineral fillers in thermoplastic polymers with their fundamental functional (service) properties remaining unaffected, and also in putties containing polyester or epoxide resins.
Keywords: glass fiber-reinforced polyester resin laminate wastes, utilization of wastes, applications of larninate waste utilization products