Manufacturing method of fiber-reinforced composite molded article excellent in elasticity

摘要

The fiber reinforced plastic complex molding material is prepd. by; soaking each of the aliphatic polyamide fibric textile and the aramide fibric textile in the thermosetting resin compsn liq.; then laminating and heat-, press molding several thereof. In the precess, before soaking, the aliphatic polyamide fibric textile is 1st heat-treated at 130-150 deg.C for 3-5 min become to 0.05-0.3% of oil pick up (OPU) value; 2nd heat-treated at 170-190 deg.C for 4-6 min; and heat-treated at 200-300 deg.C for 5-10 min. become to 0.01-0.1% of OPU value. The obtd. material is useful for the mgg. of the bullet proof clothe, helmet or tankprotector.