High-strength combination reinforced thermoplastic composite material board

Abstract

The invention relates to a thermoplastic composite material, in particular to a high-strength combination reinforced thermoplastic composite material board. The high-strength combination reinforced thermoplastic composite material board has a three-layer structure and comprises an upper fabric layer, a lower fabric layer and an extruding layer, wherein both the upper fabric layer and the lower fabric layer are knitted by combined filament yarns formed by glass fibers and polypropylene fibers; and the extruding layer is arranged between the upper fabric layer and the lower fabric layer and formed by uniformly mixing the long glass fibers and the polypropylene. Compared with a long glass fiber reinforced board, the reinforced polypropylene composite material board improves the tensile strength, bending strength and modulus, impact strength, and the like by more than 80 percent along the glass fiber direction of a fabric. A reinforced polypropylene composite material board by combining a bidirectional fabric with the long glass fiber improves strength, modulus, and the like by more than 60 percent in two same directions with the glass fibers in the fabric. The upper fabric layer and the lower fabric layer of the invention adopt the glass fibers which have flowability compared with the long glass fiber, and a part can be reinforced as required; and a middle layer adopts the long glass fibers, and the basic strength of the board can be ensured.

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...

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Problems solved by technology

Sometimes local reinforcement is required for some parts, or reinforcement in a certain direction, such as reinforcement of t

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