Injection moulding technology of glass fiber reinforced nylon component

Abstract

The invention discloses an injection moulding technology of a glass fiber reinforced nylon component. The injection moulding technology comprises the following steps: preparing raw materials, blendingparaffin, injecting a mixed material into a mould, cooling for moulding, and removing paraffin and tempering. Compared with the conventional injection moulding technology of the nylon component, theinjection moulding technology of the glass fiber reinforced nylon component, provided by the invention, has the advantages as follows: a nylon melt and glass fiber are separately treated, the glass fiber is injected by using a high-pressure grouting machine while the nylon melt is injected by using an injection moulding machine with the help of an infiltrating coating action of liquid paraffin soas to complete mixing of the nylon material and the glass fiber in the injection moulding process, and paraffin is removed by using hot water after melt moulding; by such the injection moulding technology, destruction of the glass fiber shape by a screw rod of the injection moulding machine is avoided, the flowability of the nylon melt is not destroyed, the reinforcing and toughening efficiency ofthe glass fiber is improved, and the finally prepared nylon component adopts a uniform internal structure and shows good rigidity, fatigue resistance, aging resistance and impact strength.

Description

technical field [0001] The invention relates to the technical field of nylon injection molding technology, in particular to an injection molding technology of glass fiber reinforced nylon parts. Background technique [0002] Nylon material, as a special engineering plastic with excellent mechanical properties and small specific gravity, is widely used in transportation tools such as automobiles and high-speed trains, such as nylon baffle seats, rail insulating gauge blocks, plastic sleeves for switch sleepers, various A variety of instrument panels, regulating valves, etc., are the third largest category of materials in track construction. With the development of the transportation industry, the performance requirements of nylon parts are getting higher and higher, and various types of nylon reinforcement materials are gradually emerging, such as glass fiber reinforced nylon materials, carbon fiber reinforced nylon materials, etc., due to the high cost of carbon fiber, curre...

AI Technical Summary

Problems solved by technology

[0003] Reinforced nylon materials are usually formed by injection molding process. The so-called injection molding process is melt flow molding. Due to the long fiber length of long glass fiber reinforced nylon materials, the melt fluidity is poor, and the injection molding process is difficult to control. However, short glass fiber Due to the high brittleness, the fiber deformation is serious after being plasticized by the screw of the injection molding machine and injection molding, the mechanical properties are reduced, and the reinforcement effect is not satisfactory.