All-weather persistent antistatic master batch capable of being subjected to thermoplastic processing and antistatic composite material

Abstract

The invention belongs to the field of preparation of macromolecular composite materials and particularly relates to an all-weather persistent antistatic master batch capable of being subjected to thermoplastic processing and an antistatic composite material. The antistatic master batch is prepared by forming of a low-dissociation-energy compounding agent, a processing auxiliary agent and thermoplastic macromolecular resin containing polar groups through macromolecular thermoplastic processing equipment at the temperature of 25-300 DEG C; and the mass ratio of the compounding agent to the thermoplastic macromolecular resin is equal to (1:10)-(1:50). The invention also discloses the antistatic composite material which is obtained after the persistent antistatic master batch and a macromolecular base material are formed through the thermoplastic processing equipment. The antistatic composite material has the characteristics that: 1. the antistatic composite material has light color and dyeability; 2. The master batch of the antistatic composite material and the compounding agent are wider in selection range, low in cost and easy to obtain, and the production process is simple, safe and non-hazardous; and 3. the influence of the ambient environment on the antistatic performance of the antistatic composite material is less, and the antistatic performance is persistent.

Description

technical field [0001] The invention belongs to the field of preparation of polymer composite materials, and in particular relates to an all-weather durable antistatic masterbatch and antistatic composite material which can be thermoplastically processed. Background technique [0002] The surface resistance of most polymers is as high as 10 14 ~10 17 ohm / sq, a lightweight material with excellent insulating properties. Therefore, during the processing and transportation of polymer materials, the charge balance on the surface of the material will be broken due to friction, and the surface will generate a certain amount of static electricity due to charge gain and loss. However, high surface resistance often brings greater electrostatic hazards to polymer materials during use, often leading to dust collection on the surface of products, electrostatic breakdown and short circuit of circuit boards. It may even cause fire or explosion due to electrostatic discharge, which will ...

AI Technical Summary

Problems solved by technology

[0007] Among the above three methods, although the former can produce polymer composite materials with long-lasting antistatic ability, the color of its products is relatively single (black), and conductive particles are prone to fall off during transportation and use to damage the circuit. Therefore, such products still cannot meet the antistatic performance requirements of coal mines and precision electronic components and other related fields.

The method of adding a small molecule antistatic agent to dissipate static electricity mainly relies on the hydrophilic group of the small molecule migrating to the surface of the product to absorb water in the air to form a conductive path, so its antistatic performance is extremely unstable, and when the ambient humidity is high When low, the material will lose antistatic ability

The third method is a recently popular method of eliminating static electricity accumulated on the surface of polymer materials, and its related products also have light-colored and durable antistatic capabilities, but this type of nanomaterials is often expensive, and the conductive material coated on the surface of the product The film is still easy to fall off during the transportation and use of the product, so that the product loses its antistatic ability

But the price of this product is relatively expensive (about 200,000 / ton), and the related technology has been kept secret

However, my country's research and development in this area is almost in a blank state, which forms a contradiction with the huge domestic market demand.

Images