PPR plastic pipe with self-repairing function and preparation method thereof

Abstract

The invention relates to a PPR plastic pipe with a self-repairing function and a preparation method thereof and belongs to the field of PPR pipe preparation. According to the preparation method of thePPR plastic pipe with the self-repairing function, the preparation method of the PPR plastic pipe includes the following steps that a, polyacrylic acid and poly allylamine hydrochloride are mixed uniformly into a mixed solution, the interlayer inner wall of an inner pipe body and an outer pipe body of the PPR plastic pipe are uniformly coated with the mixed solution, film forming is performed through thermal crosslinking, and the coated PPR pipe is obtained; and b, self-repairing micro capsules and light-blocking filler are mixed, an interlayer of the inner pipe body and the outer pipe body of the coated PPR pipe is filled with the mixed self-repairing micro capsules and light-blocking filler, and the PPR plastic pipe with the self-repairing function is prepared. After cracking happens tothe prepared the PPR plastic pipe, cracks can be fast repaired, pipe blasting is prevented, and the service life of the pipe is prolonged.

Description

Technical field [0001] The invention relates to a PPR plastic pipe with a self-repair function and a preparation method thereof, and belongs to the field of PPR pipe preparation. Background technique [0002] PP-R (polypropylene random) pipe, also known as type three polypropylene pipe and also known as random copolymer polypropylene pipe or PPR pipe, has the advantages of energy saving, material saving, environmental protection, light weight and high strength, corrosion resistance, smooth inner wall without scaling, construction and The advantages of simple maintenance and long service life are widely used in construction, municipal, industrial and agricultural fields such as building water supply and drainage, urban and rural water supply and drainage, urban gas, electric power and optical cable sheath, industrial fluid transportation, agricultural irrigation, etc. PP-R pipes are made of random copolymer polypropylene through extrusion to form pipes, and injection molding to fo...

AI Technical Summary

Problems solved by technology

[0008] The PPR pipes prepared by the above patents all have the function of preventing cracking at low temperature, but the above patents are all improved from the material composition of the ppr pipe, which enhances the low temperature resistance and crack resistance of the ppr pipe

However, when the PPR pipe inevitably cracks during use, it needs to be repaired manually, which wastes a lot of manpower.

Moreover, some pipes are pre-buried in the wall. After cracking, to repair, the wall needs to be chiseled first, which makes manual repair of PPR pipes very difficult.