Polypropylene composite plate

Abstract

The invention relates to a thermoplastic composite, in particular to a high-strength combination reinforced thermoplastic composite plate, having a three-layer structure, including upper and lower fabric layers, both woven of combined fiber yarns formed of glass fiber and polypropylene fiber, and an extruded layer formed by mixing well long glass fiber and polypropylene and arranged between the upper and lower fabric layers. Compared with long glass fiber reinforced plates, the unidirectional fabric combination long fiber reinforced polypropylene composite plate has the advantages that tensilestrength, flexural strength and modulus, impact strength and the like are increased by 80% and above in the fabric glass fiber direction; the bidirectional fabric combination long glass fiber reinforced polypropylene composite plate has strength, modulus and the like all increased by 60% and above in the two identical directions of the glass in the fabric. The upper and lower fabric layers are made of glass fiber which is mobile as compared to long glass fiber, and a certain part can be reinforced as required; the intermediate layer is made of long glass fiber so that basic strength of the plate can be guaranteed.

Description

technical field [0001] The invention relates to a thermoplastic composite material, in particular to a high-strength combination reinforced thermoplastic composite material board. Background technique [0002] Due to the advantages of light weight, high strength, good heat resistance, and easy recycling, glass fiber reinforced polypropylene composite materials have been widely used in auto parts, building materials, packaging materials, etc. Especially in the manufacture of automotive plastic parts, polypropylene materials reinforced with long glass fibers and long glass fiber mats are used to form many structural and semi-structural parts, such as bumper frames, seat frames, instrument panel frames, and underbody protection. boards, front-end frames, etc. [0003] Long glass fiber reinforcements are provided in the form of pellets or plates, which can be injection molded or molded. Due to the long fiber length, the reinforcement effect is greatly improved compared with sho...

AI Technical Summary

Problems solved by technology

Sometimes local reinforcement is required for some parts, or reinforcement in a certain direction, such as reinforcement of the bumper frame along the length direction, reinforcement of the upper support beam of the front end frame, is not applicable