Method for producing prepreg rovings and method for producing fibre reinforced plastic articles
申请人:DAINIPPON INK AND CHEMICALS, INC.
公开号:EP0016248A1
公开(公告)日:1980-10-01
A method for producing a prepreg roving, which comprises impregnating a composition comprising an unsaturated polyester, an unsaturated monomer (e.g. styrene) and a polyisocyanate compound (e.g. 4,4'-diphenylmethane diisocyanate) in a filamentary reinforcing material (1) (e.g. a glass roving) and then heating the impregnated reinforcing material to react the unsaturated polyester with the polyisocyanate compound, thereby bringing the resin to the B-stage; and a method for producing a fiber-reinforced plastic article, which comprises disposing prepreg rovings (A), said prepreg rovings being prepared by the above method between at least two plies of sheet molding compound (B) obtained by impregnating a composition comprising an unsaturated polyester and an unsaturated monomer in glass fibers and forming the impregnated product into a sheet; and consolidating the resulting assembly under heat and pressure. - Figure 1 is a flow chart showing the production of the prepreg roving mentioned above.
一种生产预浸粗纱的方法,包括在丝状增强材料 (1) (如玻璃粗纱)中浸渍由不饱和聚酯、不饱和单体(如苯乙烯)和多异氰酸酯化合物(如 4,4'-二苯基甲烷二异氰酸酯)组成的组合物,然后加热浸渍的增强材料,使不饱和聚酯与多异氰酸酯化合物发生反应,从而使树脂达到 B 级;将不饱和聚酯与多异氰酸酯化合物反应,使树脂达到 B 级;将不饱和聚酯与多异氰酸酯化合物反应,使树脂达到 B 级。例如 4,4'-二苯基甲烷二异氰酸酯),然后加热浸渍的增强材料,使不饱和聚酯与多异氰酸酯化合物反应,从而使树脂达到 B 级;以及一种生产纤维增强塑料制品的方法,该方法包括在至少两层片状模塑料(B)之间放置预浸无捻粗纱(A),所述预浸无捻粗纱是通过上述方法制备的,所述片状模塑料(B)是通过在玻璃纤维中浸渍由不饱和聚酯和不饱和单体组成的组合物,并将浸渍产品制成片状而获得的;以及在加热和加压的条件下固结所得到的组件。- 图 1 是上述预浸无捻粗纱的生产流程图。