Preparation method of heat-shrinkable anticorrosive material containing graphene

Abstract

The invention discloses a preparation method of a heat-shrinkable anticorrosive material containing graphene. Graphene or modified graphene and an additive are added to a polyethylene raw material, and extruded and pelletized through physical mixing to obtain a base material granulation material; the polyethylene base material granulation material is put into a radiation field, and multiple active particles are formed in solid polyethylene under the action of a high-energy ray to form a crosslinked three-dimensional net structure in polyethylene, and crosslinking or grafting reaction is carried out to obtain the crosslinked polyethylene material containing graphene. The crosslinked polyethylene material containing graphene can be effectively used for corrosion prevention of buried and overhead steel pipe welding seams and corrosion prevention of heat preservation coating joints of heat preservation pipes.

Description

technical field [0001] The invention relates to a graphene-containing heat-shrinkable anti-corrosion material, in particular to a preparation method of a graphene-containing heat-shrinkable anti-corrosion material. Background technique [0002] Corrosion of steel pipes generally exists in various sectors of the national economy and national defense construction, which not only brings huge losses to the national economy, but also causes great difficulties to people's production and life. Under natural conditions or artificial conditions, such as acid, alkali, salt and other media, steel pipes are corroded all the time. This is a spontaneous and unnecessary consumption. The fundamental reason is that steel pipes are in the thermodynamic Unstable state, under the above conditions, they will return to the original relatively stable state, forming compounds such as iron oxides and carbonates or transforming into soluble ions. This process is the corrosion process of metals. Corr...

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Problems solved by technology

[0005] At present, the base materials of heat shrinkable tapes, heat shrinkable sleeves and heat shrinkable wrapping tapes commonly used to protect buried and overhead steel pipe welding joints and thermal insulation joints are generally radiation cross-linked polyethylene. Traditional radiation cross-linked polyethylene The anti-corrosion performance of polyethylene material is not enough, and there are problems such as excessive product weight, poor flexibility, and insufficient strength

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