Preparation process of high-rigidity anti-static modified hollow wall winding pipes

Abstract

The invention relates to a preparation process of a high-rigidity anti-static modified hollow wall winding pipes. Graphene is modified by using modified nano zinc oxide whisker, and the nano zinc oxide whisker, vinyl silane coupling agent and the graphene are combined into a whole; the vinyl silane coupling agent and the nano zinc oxide whisker are uniformly dispersed on the surface and between sheets of the graphene, so that the surface performance of the graphene is improved, the dispersion of the nano zinc oxide whisker and the graphene is effectively promoted, and the agglomeration is prevented; and the compatibility between systems is improved by acting with high-density polyethylene resin, and the mechanical performance, toughness and rigidity of pipes are improved. On the one hand,the carbon content of the pipes is increased, and the thermal stability of the pipes is improved; and on the other hand, the nano zinc oxide whisker and graphene cooperate to form a continuous conductive path between the systems,the conductivity of the pipes is greatly improved, and the anti-static flame retardant effect of the pipes is improved. The preparation process of the high-rigidity anti-static modified hollow wall winding pipes is simple and scientific, the cost is low, the preparation process is environmentally friendly and does not pollute the environment.

Description

technical field [0001] The invention belongs to the technical field of plastic pipe preparation technology, and relates to a preparation technology of a high-rigidity antistatic modified hollow-wall winding pipe. Background technique [0002] Hollow wall winding pipe is a structural wall pipe made of high-density polyethylene (HDPE) by thermal winding molding process. It has strong flexibility, smooth inner wall, small flow resistance, wear resistance and corrosion resistance. , has the characteristics of excellent high rigidity, high strength, light weight, strong impact resistance, and is not easy to break. It is suitable for municipal drainage, building outdoor drainage, buried farmland drainage, industrial sewage, and road drainage where the water temperature is below 45°C. , Sewage and waste water drainage system, sports field and square engineering drainage and electrical and telecommunications engineering, etc. [0003] Plastic pipe is an insulating material with goo...

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Problems solved by technology

[0003] Plastic pipe is an insulating material with good electrical insulation properties, but its surface is prone to static electricity

The suspended dust in the industrial production environment rubs and collides with the surface of the hollow-wall winding pipe, and the positive and negative charges are redistributed, and they accumulate on the surface of the hollow-wall pipe and the dust respectively; and these static charges are difficult to migrate, and when the static charge accumulates to a certain extent, it will Discharge produces sparks, bringing safety hazards, causing fire or chemical explosion

[0004] In order to make plastic pipes have excellent antistatic performance, it is usually necessary to carry out antistatic modification on plastic resin raw materials. The existing antistatic modification method is generally to add antistatic additives such as conductive carbon black, but conductive carbon black can only get black products, and when the amount is large, it will destroy some mechanical properties of the pipe

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