Lightweight high-strength bat and preparation method therefor

A preparation method for a lightweight high-strength bat, comprising the following steps:

• S1, an outer diameter of a bat core rod used for winding yarn was determined according to an outer diameter and a thickness of the lightweight high-strength bat;
• S2, the bat core rod was coated with a fiber prepreg cloth to obtain a fiber bat main body layer coated on the bat core rod;
• S3, a surface of the fiber bat main body layer was coated with an epoxy structural adhesive film to form a tough layer, and the bat core rod was taken out to obtain a preform;
• S4, inserting a long nylon bag into a cavity of the preform, sealing both ends of the nylon bag with air nozzles, pressurizing the nylon bag through the air nozzle at one end, then placing the preform in a forming mold, heating and pressurizing for molding and curing;
• and
• S5, the preform was taken out, the nylon bag was taken out to obtain a rough embryo of the lightweight high-strength bat, and cleaning was performed to obtain the lightweight high-strength bat,
• wherein the epoxy structural adhesive film is prepared from the following raw materials in parts by weight:
• 45-65% of bisphenol A epoxy resin, 5-10% of p-aminophenol triglycidyl amine, 4-6% of dicyandiamide, 2-4% of an organic urea accelerator, 1-5% of a KH560 silane coupling agent, 5-10% of solid nitrile rubber, 7-15% of liquid carboxyl-terminated nitrile rubber, 7-15% of epoxidized polybutadiene liquid rubber, and 1-5% of 8-hydroxyquinoline.