Preparation method of high-toughness PP particles

Abstract

The invention discloses a preparation method of high-toughness PP particles. The formula comprises the following raw materials in parts by weight, the material is prepared from 60-80 parts of PP resin, 8-10 parts of flexibilizer, 8-12 parts of nano silicon dioxide, 15-20 parts of nano calcium carbonate, 6-10 parts of glass fiber, 3-5 parts of compatilizer, 8-12 parts of light stabilizer, 3-5 partsof dispersing agent, 5-8 parts of environment-friendly plasticizer and 3-5 parts of titanate coupling agent. Nano silicon dioxide, nano calcium carbonate and glass fiber are used as mixed auxiliary materials of PP plastic particles; the specific surface area of the nanoparticles is large; a good cross-linking effect is achieved with a polymer; according to the invention, the strength of the polymer material can be improved, the thermal stability and wear resistance of the material can be enhanced, the acceleration effect on PP plastic particles is obvious, the tensile strength of the PP plastic particle finished product is greater than or equal to 40MPa, the elastoplasticity is greater than or equal to 350MPa, and the bending strength is greater than or equal to 40MPa, so that the antibacterial property and wear resistance of the material are improved.

Description

technical field [0001] The invention belongs to the technical field of plastic products, in particular to a preparation method of high-toughness PP particles. Background technique [0002] Plastic is a polymer compound (macromolecules) that is polymerized by addition or polycondensation of monomers, commonly known as plastics or resins. It can freely change its composition and shape. It is composed of synthetic resins and fillers, Plasticizer, stabilizer, lubricant, colorant and other additives. The main component of plastic is resin. The term resin was originally named after the lipids secreted by animals and plants, such as rosin, shellac, etc. Resin refers to a polymer compound that has not been mixed with various additives. Resin accounts for about 40% to 100% of the total weight of the plastic. The basic properties of plastics are mainly determined by the nature of the resin, but additives also play an important role. Some plastics are basically composed of syntheti...

AI Technical Summary

Problems solved by technology

[0004] 1. During the processing of the existing PP granulation equipment, the mixed material in the molten state after mixing is usually directly introduced into the extrusion barrel for extrusion granulation. Since the mixed material is in a molten state, for the mixed material entering the extrusion barrel The amount cannot be effectively controlled, which affects the extrusion efficiency of the extrusion barrel. At the same time, the mixture is prone to sticking and agglomeration before entering the extrusion barrel, which affects the extrusion quality of PP particles;

[0005] 2. During the processing of the existing PP granule equipment, the PP granules after granulation are usually stored in a large container. During the subsequent use of PP granules, secondary packaging is required, which causes a lot of waste. A lot of manpower and material resources, while being stored in a large container, makes PP particles easy to be damp and inconvenient to carry;

[0006] 3. The existing PP plastic particles have poor antibacterial and wear-resistant effects, and have the disadvantages of poor weather resistance, temperature resistance and mechanical shock resistance, which limit the scope of use of PP plastic particles and shorten the service life of PP plastic particles ;

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