High-welding strength long glass fiber-reinforced polypropylene material and preparation method thereof

Abstract

The invention relates to a long glass fiber-reinforced polypropylene material and a preparation method thereof, in particular to a high-welding strength long glass fiber-reinforced polypropylene material and a preparation method thereof. The material comprises the following components: in parts by weight, 40-70 parts of polypropylene, 20-60 parts of glass fiber, 0.5-4 parts of a hyperdispersant, 0.5-3 parts of a dispersion synergist, 1-5 parts of a compatilizer, 1-4 parts of a deodorant and 0.5-2 parts of other additives. It is ensured that the glass fiber in the long glass fiber-reinforced polypropylene has sufficient length, and meanwhile the dispersion efficiency of the glass fiber is higher, so that the problems of fiber emergence on surface of products and stacking of the long glass fiber are achieved; high welding strength can be achieved in the forming process of parts, excellent air tightness is achieved, and meanwhile the advantages of low odor and low VOC are achieved, so that requirements of environmental protection and emission of a host machine plant are met; and in addition, the long glass fiber-reinforced polypropylene material has high cost performance and easy industrialization.

Description

Technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high welding strength long glass fiber reinforced polypropylene material and a preparation method thereof. Background technique [0002] With the development of automobile lightweight trend, replacing steel with plastic has become one of the hot research directions of automobile air conditioning. Among them, long glass fiber reinforced polypropylene materials are widely used in automobiles, electric tools and other fields because of their excellent mechanical strength, heat resistance, and dimensional stability. However, when used in the welding of parts, the length of the glass fiber in the material is too long, the dispersion is difficult, the stacking between the fibers is serious, and the floating fiber problem causes the welding seam strength of the parts during welding to be insufficient, and the air pressure or water pressure blasting fails , Easy to fall off. Mor...

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Problems solved by technology

[0003] In order to solve the above technical problems, the material of the present invention adopts a scientific formula design, while ensuring that the glass fiber retains a sufficient length, the dispersion efficiency of the glass fiber is higher, and the problem of product floating fiber and long glass fiber stacking is solved, so that the parts forming process High welding strength has been obtained in the process, which has greatly improved the performance of existing materials, and also has the characteristics of low odor and low VOC

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