Nano antibacterial PP-R composite pipe and manufacturing method thereof

Abstract

The invention relates to a nano antibacterial PP-R composite pipe and a manufacturing method thereof and belongs to the technical field of building materials. The traditional PP-R pipes, on one hand, has inadequate strength and large coefficient of inertia expansion, and, on the other hand, cannot suppress the growth of bacteria and deteriorates water as a bacterium film is on the inside surface of the pipe after long-term use. Aiming at overcoming the drawbacks, the invention designs a composite pipe, which comprises a common PP-R outer pipe layer and is characterized in that: an inner pipe layer is PP-R loaded with a silver ion antibacterial agent; and a composite reinforcing layer blended with glass fibers and the PP-R is arranged between the inner and outer pipe layers. The manufacturing method of the nano antibacterial PP-R composite pipe comprises: connecting three layers of composite molds and three plastic extruding machines; after the raw materials are heated to a corresponding temperature, sequentially starting the three extruding machines to co-extruding the three layers to make a pipe blank; and subjecting the pipe blank to vacuum sizing, spray cooling, surface drying, laser code spray, fixed length cutting and end milling to obtain the nano antibacterial PP-R composite pipe. Trial use shows that the nano antibacterial PP-R composite pipe of the invention has the advantages of high strength, small coefficient of inertia expansion and remarkable antibacterial effect.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to an antibacterial plastic pipe and a manufacturing method thereof, in particular to a nanometer antibacterial PP-R composite pipe and a manufacturing method thereof. Background technique [0002] The existing PP-R (random copolymerized polypropylene resin) pipes have the defects of insufficient strength and large linear expansion coefficient on the one hand, and on the other hand, they cannot inhibit the growth of bacteria in the water quality. After long-term use, the inner surface will adhere, Breeding microorganisms, forming a biofilm, resulting in a decline in water quality. It can be seen that, aiming at the deficiencies in the prior art, it is necessary to design a nano-antibacterial PP-R composite pipe with high strength, small linear expansion coefficient and the ability to inhibit bacterial growth and its manufacturing method. Contents of the invention [0003...

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Problems solved by technology

[0002] The existing PP-R (random copolymerized polypropylene resin) pipes have the defects of insufficient strength and large linear expansion coefficient on the one hand, and on the other hand, they cannot inhibit the growth of bacteria in the water quality. After long-term use, the inner surface will adhere, Breeding microorganisms, forming a biofilm, resulting in a decline in water quality

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