Composition for processing polystyrene porous material, polystyrene porous material and preparation method thereof

Abstract

The invention discloses a composition for processing a polystyrene porous material, a polystyrene porous material and a preparation method thereof. The composition comprises the following components in percentage by weight: 65-88% of polystyrene, 7-30% of conductive filler and 0.1-5% of assistant, wherein the assistant at least comprises antioxidant. The porous material can be subjected to extrusion molding or injection molding by an extruder or other corresponding apparatuses, and has the advantages of permanent antistatic performance, electric conduction and low cost. Compared with the traditional material, the porous material disclosed by the invention can lower the cost by about 20% on the premise of keeping the volume resistivity and surface resistivity.

Description

technical field [0001] The invention belongs to the field of macromolecules, and relates to a permanent antistatic and conductive polystyrene porous material processing composition, a polystyrene porous material and a preparation method thereof. Background technique [0002] The surface resistivity of polystyrene is high, usually greater than 10 12 ohm / sq, the electrical insulation performance is very good, and it is easy to generate static electricity during processing and use. When the electrostatic charge accumulates to a certain extent, electrostatic spark discharge may occur. In recent years, with the rapid development of the electronics industry, the hazards of static electricity are particularly prominent, such as causing malfunctions of integrated circuits in electronic machines or office machines or memory damage. Therefore, the research on polystyrene materials with antistatic function has attracted people's attention. [0003] There is a Chinese patent CN136482...

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Problems solved by technology

[0003] There is a Chinese patent CN1364826 to produce conductive polystyrene materials by adding conductive graphite, but because conductive graphite contacts each other in the matrix to form a conductive network, generally a relatively large amount of addition is required, which will have a relatively large impact on the performance of the matrix

[0004] There is already a Chinese patent CN101899185A for producing conductive polystyrene materials by adding carbon nanotubes, but this invention patent cannot be widely used in production and life because carbon nanotubes are expensive

[0005] There is already a Chinese patent CN101602890 to prepare antistatic and conductive polystyrene materials by adding conductive carbon fibers, but carbon fibers are expensive

[0006] Chinese patent CN101840745A prepares antistatic and conductive polystyrene materials by adding stainless steel fibers, but this material is not only expensive, but also has a density much higher than traditional plastics, and the advantages of light weight of plastics are greatly reduced

[0007] The methods described in the above patents can well prepare conductive polystyrene materials, but the materials obtained in the above patents have poor mechanical properties or are expensive, and cannot be widely used in daily production and life.

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