Long-fiber reinforced thermoplastic composite material of longitude and latitude glass fiber surface, and molding method and application thereof

Abstract

The invention relates to a long-fiber reinforced thermoplastic composite material of a longitude and latitude glass fiber surface, and a molding method and application thereof. The composite material comprises a base body and a surface layer, wherein the base body is a long-fiber reinforced thermoplastic composite material; the surface layer is a glass fiber mat surface layer which is dipped by the thermoplastic material; and the surface layer is heated into a molten state, and pressed together with the base material in the molten state to be cross-linked into a whole. The molding method comprises the preparation processes of putting the surface layer into a mold cavity of mold pressing equipment after heating the surface into the molten state, simultaneously evenly mixing the thermoplastic composite material of the base body with the glass fiber and then transporting to the mold cavity of the mold pressing equipment; and putting above the glass fiber mat in the molten state, mold-pressing and molding. The arts and crafts material can be applied to manufacturing of a building template. The arrangement order of long fibers of an LFT-D (long fiber reinforced thermoplastic in direct pressing) process for reinforcing the thermoplastic composite material is improved by providing the longitude and latitude glass fiber mat on the surface and fusing with an LFT-D base body to form a whole; and the mechanical property of the pressed and molded product is greatly improved after the long-fiber reinforced thermoplastic composite material is applied to preparation of the building template.

Description

technical field [0001] The invention relates to a long-fiber-reinforced thermoplastic composite material, in particular to a long-fiber-reinforced thermoplastic composite material with warp and weft glass fiber surface layers, a molding method and application thereof. [0002] Background technique [0003] Long fiber reinforced thermoplastic composite material English abbreviation: LFT-D, English full name: Long-FiberReinforceThermoplasticDirect. Long fiber reinforced thermoplastic materials are compared with ordinary fiber reinforced thermoplastic materials. The most used matrix resin is PP, followed by PA, and some resins such as PBT, PPS, and SAN are also used. The molding process of this material is: the polymer matrix particles (mainly PP) and additives are delivered to the gravity mixing metering unit, and the material is compounded according to the mechanical performance requirements of the part. The mixed raw materials are sent to the twin-screw extruder for plast...

AI Technical Summary

Problems solved by technology

During this process, due to the random arrangement of the long fibers used to reinforce thermoplastic composites, the mechanical properties of the press-formed product, especially the impact resistance, are reduced

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