Injection moulding process of glass fiber composite

Abstract

The invention discloses an injection moulding process of a glass fiber composite. The process comprises the following steps of early-stage preparation, pretreatment, injection moulding, and inspection. A mold is mounted and debugged, equipment is inspected, and production safety is ensured; a raw material of the glass fiber composite is subjected to preheating and drying, and the treated raw material is added into an injection moulding machine material cylinder; an injection moulding machine is subjected to parameter setting, the thickness of an initial mold cavity is 2 to 3 mm, the mold temperature is 110 to 120 DEG C, the melt temperature is 290 to 300 DEG C, the injection time is 2.0 to 2.2 s, the injection pressure is 110 to 120 MPa, injection moulding is carried out, mold sinking is carried out for part taking, forming of a plastic part is finished, and the glass fiber composite is obtained; the injection moulding process of the glass fiber composite optimizes is optimized and issimple, the mold is improved, the manufactured glass fiber composite is uniform in inner structure, stretching strength and bending strength are improved, the process has the advantages of being highin modulus and strength and light in weight, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of injection molding, and in particular relates to an injection molding process of glass fiber composite materials. Background technique [0002] Glass fiber is an inorganic non-metallic material with excellent performance. There are many kinds. The advantages are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength, but the disadvantages are brittleness and poor wear resistance. It is made of pyrophyllite, quartz sand, limestone, dolomite, boronite, and boronite as raw materials through high-temperature melting, wire drawing, winding, and weaving. The diameter of its single filament is several Micron to more than 20 microns, which is equivalent to 1 / 20-1 / 5 of a hair, and each bundle of fiber filaments is composed of hundreds or even thousands of single filaments. The glass fiber is often used as reinforcing material of composite material, electrical insulation and...

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Problems solved by technology

[0005] The Chinese patent application number is CN201810249063.9 which discloses a composite material injection molding process, which optimizes and improves the existing injection molding process, and uses metal powder and matrix resin containing Ti, Mg, Al, Ni and Mo as composite materials. Material raw materials, through multi-nozzle intermittent injection molding, not for glass fiber composites

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