▎ 摘　　要

NOVELTY - A preparation method of glass fiber reinforced plastic comprises brushing release agent, spraying gel coat, preparing glue paste, curing and demolding, cutting and polishing, and performing product inspection to obtain the product. The glue paste is prepared by treating the glass fiber with a modified coupling agent, adding an initiator and an accelerator to the resin and pasting the resin on the glass fiber, where the mass ratio of the glass fiber and resin is (35-50):100, the resin comprises unsaturated polyester resin and/or vinyl resin, the mass ratio of the initiator, accelerator, modified coupling agent and resin is (5-7): (1-3): (2-3):100, and the modified coupling agent is prepared by reacting allyl polyether and epoxy-terminated silane coupling agent according to the mass ratio (0.6-0.8):1. USE - The method is used for preparing glass fiber reinforced plastic (claimed), which is used in domestic and foreign petroleum production and transportation applications. ADVANTAGE - The method prepares the glass fiber reinforced plastic with improved mechanical strength. The method improves the interface bonding strength between the resin and the glass fiber, and mechanical strength of the glass fiber reinforced plastic through the dual effects of chemistry and physics.