Preparation method of self-repairing modified polyolefin hose material for water supply pipe

By introducing nano zinc oxide-based bimini quaternary ammonium salt and hindered amine-modified bimini quaternary ammonium salt into the polyolefin hose material for water supply pipes, a chemical-physical network structure is formed, and the aging and mechanical properties of the water supply pipe materials during use is solved, which achieves excellent self-healing, antibacterial and anti-aging properties, and extends the service life.

CN120464044APending Publication Date: 2025-08-12ZHEJIANG YOUWEI NEW MATERIAL CO LTD
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Patent Information

Application Number
CN202510754662.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-06
Publication Date
2025-08-12

AI Technical Summary

Technical Problem

During use, the hose materials for water supply pipes are easily aged, discolored, and become brittle under friction or ultraviolet rays, which affects its mechanical properties and service life.

Method used

By introducing nano-zinc oxide-based bison quaternary ammonium salts and hindered amine-modified bisonium quaternary ammonium salts into polyolefin hose materials, the dienylene structure and branched chain structure are used to increase the crosslinking point, and combining dynamic reversible disulfide bonds and hydrogen bonds to form a chemical-physical network structure to improve the self-healing, antibacterial and anti-aging properties of the material.

Benefits of technology

The modified polyolefin hose material prepared has excellent self-repairing performance, antibacterial properties and anti-aging properties, extending the service life of the water supply pipe.

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Abstract

The invention relates to the technical field of polyolefin, and discloses a preparation method of a self-repairing modified polyolefin hose material for a water supply pipe, the preparation method comprises the following steps: taking mercaptoethylamine, acrylic acid, chloropropene and the like as raw materials, carrying out a series of reactions to prepare an intermediate product 2, carrying out two times of reaction on the intermediate product 2 and nano-zinc oxide, 4-amino-2, 2, 6, 7, 8-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3-tetramethyl-1, 3- The self-repairing modified polyolefin hose material for the water supply pipe is obtained by reacting nano-zinc oxide-based gemini quaternary ammonium salt and hindered amine modified gemini quaternary ammonium salt with 2, 2, 6, 6-tetramethylpiperidine, introducing the nano-zinc oxide-based gemini quaternary ammonium salt and hindered amine modified gemini quaternary ammonium salt into polypropylene and polyethylene, uniformly mixing, melting and blending, extruding and granulating, and carrying out injection molding. The prepared modified polyolefin hose material has excellent self-repairing performance, antibacterial performance, anti-aging performance and mechanical performance, and the service life of a water supply pipe can be prolonged when the modified polyolefin hose material is applied to the water supply pipe.
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