Antistatic polypropylene composite material and its preparation method

Abstract

The invention relates to an antistatic polypropylene composite material, comprising the following components by weight: 38-75% of polypropylene; 10-30% of filler; 5-25% of flexibilizer; 3-10% of an antistatic auxiliary agent; 0.1-1.0% of heat stabilizer DSTP; 0.1-1.0% of anti-oxidant 1010; and 0.1-0.5% of anti-oxidant 168. The antistatic auxiliary agent is a mineral powder auxiliary agent plated with a conductive metal. The polypropylene composite material of the invention has simple preparation technology, low cost and good physical property, and also reduces the generation of static electricity.

Description

technical field [0001] The invention relates to a polypropylene composite material, in particular to an antistatic polypropylene composite material, and also relates to a preparation method of the polypropylene composite material. Background technique [0002] At present, with the rapid development of the automobile industry, lightweight, safety, comfort and environmental protection are the main trends in the development of the world's automobile industry, and plastics and their composite materials have become important automotive materials. Polypropylene has been widely used in automobiles due to its low density, high cost performance, excellent heat resistance, rigidity, chemical corrosion resistance, easy processing and recycling, and has become the largest and fastest growing plastic in automobiles. The fastest breed. [0003] However, polypropylene (referred to as PP) is a highly insulating material, and its volume resistivity is generally 10. 16 ~ 10 18 Ω·m, surfac...

AI Technical Summary

Problems solved by technology

One is the anionic surfactant type. U.S. Patent US4000102 reports the addition of fatty acid zinc anionic surfactants to PP. Based on its hygroscopicity and ionization properties, coupled with its certain lubricity, it endows the material with good antistatic properties. , it achieves the antistatic effect through the non-stop migration of the antistatic agent to the surface of the material, but the continuous loss and non-stop migration of the antistatic agent makes the antistatic effect not very durable. In addition, its melting point is low, only 60- 70°C, when used in summer with high temperature, it will cause stickiness and odor problems due to melting, so it is not a good antistatic agent, and cationic and nonionic antistatic agents also have such disadvantages. Patent UST961008 reports the use A quaternary ammonium salt cationic surfactant has been introduced, and U.S. Patent US6031034 reports the use of fatty acid esters and alkyldiethanolamine nonionic surfactant antistatic agents, which also have the problems of timeliness, stickiness and odor of use; there is also a kind of antistatic The antistatic agent is a polymer permanent antistatic agent, which has two kinds of intrinsic type and hydrophilic type. Because the cost of the intrinsic type is higher, the hydrophilic type is used more. U.S. Patent US4042632 and US5182338 use polysulfone and polysulfone respectively. Ethylene oxide polymer, which also uses its water absorption to form a conductive layer on the surface of the material to make antistatic PP, but it is expensive and used in large quantities. Secondly, it is a polar substance and a non-polar PP phase. Capacitance is not good, compatibilizer should be added when using, so it is difficult to grasp the physical properties of the material, and these antistatic agents have relatively high temperature requirements for humidity use, so they are not ideal antistatic agents

[0008] To sum up, the currently used antistatic agents have their good antistatic side, but also have great limitations, either the timeliness of use is poor, or there are problems with stickiness and odor, or affect other physical indicators, or The use is limited by the color, or the cost is high, it is difficult to produce industrially, or it is limited by compatibility, and many are affected by air humidity, so a kind of static electricity can be developed that can not only reduce the generation of static electricity, but also eliminate the generated static electricity. And the auxiliary agent that can overcome the above problems is the ideal antistatic agent

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