Antibacterial water inlet pipe and processing technology thereof

Abstract

The invention discloses an antibacterial water inlet pipe and a processing technology thereof. Comprising the following steps: step 1, mixing polypropylene random copolymer, polypropylene / cysteamine / titanium dioxide, a lubricant and an antioxidant, and heating and melting; a double-screw extruder is used, a mandrel and a mold are arranged to rotate in the same direction at the same rotating speed, extrusion forming is conducted, and a water inlet pipe A is obtained; and 2, the inner wall of the water inlet pipe A is washed with isopropanol, the water inlet pipe is preheated, an organic silicon resin solution is rotationally sprayed to the inner wall, curing is conducted, and the antibacterial water inlet pipe is obtained. The preparation method has the beneficial effects that polypropylene / cysteamine / titanium dioxide is prepared by using multiple reactions, the dispersion of titanium dioxide nanoparticles is enhanced, and the antibacterial property is improved; meanwhile, polypropylene / cysteamine / titanium dioxide and a grape seed meal extract are combined, and a double-screw same-speed rotary extrusion process is adopted, so that the crystallinity of beta-phase crystals of the antibacterial water inlet pipe is effectively improved, and the toughness and the impact strength are improved.

Description

technical field [0001] The invention relates to the technical field of water inlet pipes, in particular to an antibacterial water inlet pipe and its processing technology. Background technique [0002] At present, in common water pipes, polypropylene random copolymer (PPR) is the most commonly used due to its advantages of light weight, non-toxicity, and pressure resistance. It is a copolymer in which ethylene molecules are randomly grafted along the polypropylene chain, and the resulting crystal forms have different mechanical properties. Since the water pipe is used in the process of water delivery, the water pipe needs to bear a large hoop stress. However, in ordinary PPR water pipes, most of them are in the α-crystal form, which leads to poor toughness, poor hoop strength, and weak impact resistance, which limits its application. [0003] On the other hand, PPR water pipes are usually not antibacterial, causing bacterial growth and dirt deposits. At the same time, mos...

AI Technical Summary

Problems solved by technology

However, in ordinary PPR water pipes, most of them are in the α-crystal form, resulting in poor toughness, poor hoop strength, and weak impact resistance, which limits its application.

[0003] On the other hand, PPR water pipes are usually not antibacterial, causing bacterial growth and dirt deposits

At the same time, most of the PPR water pipes are polypropylene chains, and the tertiary carbon atoms are easier to depolymerize than other polyolefins, causing embrittlement problems, so it is necessary to add toughening agents, antioxidants, antibacterial agents and other substances; however, water pipes When used in harsh environments such as hot water, the added small molecular substances will migrate, dissolve, and be eluted; and the chlorine plasma in the water will corrode the pipe, which will aggravate the degradation of the water pipe, thus affecting the service life of the PPR water pipe.

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