Three-layer co-extrusion PVC-M tubular product for coal mine

Abstract

The invention discloses a three-layer co-extrusion PVC-M tubular product for coal mine, characterized in that the tubular product comprises an antistatic inner layer, an antistatic outer layer and a PVC-M interlayer, wherein the antistatic inner and outer layer compositions comprise the following ingredients: 100 weight parts of PVC resin, 0.8-1.2 weight parts of heat stabilizer, 4-8 weight parts of toughening agent, 1.3-2.0 weight parts of lubricating agent, 5-10 weight parts of flow modifier, and 6 weight parts of nano conductive carbon black; the PVC-M interlayer composition comprises the following ingredients: 100 weight parts of PVC resin, 1.0-1.5 weight parts of heat stabilizer, 10-15 weight parts of toughening agent, 2.1-3.5 weight parts of lubricating agent, and 0-5 weight parts of filling agent. According to the invention, the composition of the tubular product has high strength, the shock resistance of the tubular product can be comparable to that of polyethylene antistatic tubular products for coal mine, the modulus reaches to 2231MPa, the tensile strength reaches to 46.3Mpa, the impact strength of the simple-supported beam reaches to 97.6Mpa, the mechanical property shows toughness and balance and permanent antistatic property, thus the requirements of the tubular product for coal mine are satisfied.

Description

technical field [0001] A three-layer co-extrusion PVC-M pipe material for coal mines belongs to the field of high molecular polymer materials, and specifically relates to a three-layer co-extrusion PVC-M pipe material structure and a composition thereof for coal mines. Background technique [0002] With the development and improvement of material synthesis technology, breakthroughs have been made in the research of new materials at home and abroad. People analyze that polyethylene (PE) pipe is a low-strength material, usually in the form of ductile failure, and hard polyvinyl chloride ( PVC-U) pipe is a high-strength material, which is often damaged by brittleness. Can a product with both high strength and high toughness be produced to optimize the performance of the product, improve the economy of the product, and open up new field of application is an important topic. After research, it is found that the impact-modified PVC (PVC-M) pipe with both strength and toughness ca...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a three-layer co-extruded PVC-M pipe for coal mines. The PVC-M pipe not only maintains the mechanical properties of PVC-M, especially The excellent impact resistance performance of PVC-M pipes overcomes the defect of poor antistatic performance of PVC-M pipes in coal mines

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