A kind of composite antistatic plastic concentrated masterbatch and preparation method thereof

Abstract

The invention relates to the technical field of composite materials, and particularly relates to a composite antistatic plastic concentrated master batch and a preparation method thereof. The composite antistatic plastic concentrated master batch comprises the following components in parts by weight: 5-20 parts of modified graphene, 0-10 parts of carbon nano tubes, 0-10 parts of conductive carbonblack and 100 parts of a lubricant, wherein the total mass of the modified graphene, the carbon nano tubes and the conductive carbon black in the composite antistatic plastic concentrated master batchis greater than 20%. The plastic concentrated master batch produced by the process disclosed by the invention has compatibility with a plastic processing production process, so that strength, ultraviolet resistance, service life, performance stability, electrical conductivity and heat conductivity of the plastic can be improved, and a wide application prospect is achieved. The concentrated masterbatch can be added as an additive in a normal injection molding process, and no extra master batch granulation process is needed, so that production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a composite antistatic plastic concentrated masterbatch and a preparation method thereof. Background technique [0002] Most plastics are good insulators, and it is easy to generate static electricity on the surface in the use environment, especially in a dry environment. The generation of static electricity often has negative effects, such as simple human body contact can cause discomfort, easily cause damage to electronic components and fire and explosion of flammable materials. To prevent the accumulation of static electricity, the surface resistance of the plastic needs to be in the range of 106-10 ohms. The lower the square resistance, the higher the antistatic level. [0003] For plastic products with antistatic requirements, antistatic liquid can be sprayed on the surface of the product or antistatic agents can be added to the production raw materials. Adding ...

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Problems solved by technology

[0003] For plastic products with antistatic requirements, antistatic liquid can be sprayed on the surface of the product or antistatic agents can be added to the production raw materials. Adding conductive nano powder and conductive polymers is the best way to achieve permanent antistatic properties. Other antistatic Electrostatic methods are shorter in duration or have other disadvantages

[0004] Conductive carbon black is a relatively cost-effective conductive additive. Adding about 2% acetylene carbon black can often achieve antistatic effect, but there are the following disadvantages: carbon black is difficult to disperse evenly, it is a very black matte color, and the mechanical strength may be reduced. Increased brittleness

There have been patents describing the antistatic application of graphene, but due to the price of graphene itself and the problems of dispersion and superposition, the cost performance of the solution is not high

However, the conductivity of redox graphene prepared by mainstream chemical methods is far lower than the intrinsic conductivity of graphene, and the preparation process is not environmentally friendly, easy to accumulate and overlap, difficult to disperse, and most plastics have low surface tension. Insufficient wettability and adhesion to plastics for compatibility

[0005] Chinese patent literature discloses "an antibacterial, antiaging and antistatic plastic masterbatch and its preparation method", the announcement number of which is CN 102464821A. This invention significantly reduces the static rate of the material by adding metal particles, and the intrinsic volume resistance is reduced to less than ten , but the preparation cost of the antistatic plastic masterbatch is high, and the cost performance is not high

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