Composite pipe for sewerage system and preparation method of composite pipe

Abstract

The invention provides a composite pipe for a sewerage system and a preparation method of the composite pipe. The composite pipe comprises a modified polyvinyl chloride main body and a protective layer coated on the inner side of the polyvinyl chloride main body. The modified polyvinyl chloride main body is prepared from the following substances in parts by weight: 10 to 15 parts of ultra-high molecular weight polyethylene, 5 to 10 parts of hollow glass beads, 10 to 15 parts of polyether-ether-ketone, 70 to 80 parts of polyvinyl chloride, 0.3 to 0.5 part of antioxidant 1010, 0.5 to 0.8 part of bismaleimide, 5 to 10 parts of hydrotalcite and 5 to 10 parts of carbon fiber; wherein the protective layer coated on the inner side of the polyvinyl chloride main body consists of the following substances in parts by weight: 20-30 parts of polytetrafluoroethylene, 30-40 parts of chlorosulfonated polyethylene and 5-8 parts of silane. The composite pipe for the blow-down system has good corrosion resistance, the inner wall is smooth and free of scaling, the composite pipe can be used for a blow-down pipe, and the situations of blockage, water leakage or damage are not prone to occurring after the composite pipe is used for a long time.

Description

technical field [0001] The invention relates to the technical field of pipe processing, in particular to a composite pipe used in a sewage system and a preparation method thereof. [0002] technical background [0003] Compared with traditional cast iron pipes, galvanized steel pipes, cement pipes and other pipes, plastic pipes have the advantages of energy saving, environmental protection, light weight and high strength, corrosion resistance, smooth inner wall without scaling, easy construction and maintenance, and long service life. Widely used in building water supply and drainage, urban and rural water supply and drainage, city gas, electric power and optical cable sheathing, industrial fluid transportation, agricultural irrigation and other construction, municipal, industrial and agricultural fields. Plastic pipes are an important branch of many chemical building materials. From the perspective of different classifications of chemical materials, plastic pipes can be divi...

AI Technical Summary

Problems solved by technology

[0005] Compared with the drainage pipe, the sewage pipe has higher requirements on the pipeline. Compared with the water quality in the ordinary drainage pipe, the sewage discharged from the sewage pipe is more polluted. The sewage discharged from the sewage pipe often includes a large amount of Solid particles such as mud and dirt, these solid particles have been rubbed against the pipe wall for a long time, making the pipe wall thinner and rougher, causing pipe blockage or water leakage, and the sewage even contains some strong corrosive chemicals, which are harmful to the pipe wall. The damage is very serious, so, combined, will seriously affect the service life of the pipeline

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