Method for preparing anti-aging and anti-bacterial plastic granules and method for preparing double-layer PPR (Polypropylene Random) pipe by using anti-aging and anti-bacterial plastic granules

Abstract

The invention discloses a method for preparing natural anti-aging and anti-bacterial plastic granules and a method for preparing a double-layer PPR (Polypropylene Random) pipe by using the anti-aging and anti-bacterial plastic granules. The method for preparing plastic granules comprise the steps of adding 0.1-5 part of white mineral oil No.10, 2-8 parts of polyethylene wax, 0.1-5 part of silane coupling agent, 20-40 parts of polyethylene resin, 5-10 parts of shell powder of which the granule size is 80-100 meshes, and 3-6 parts of silver-carried charcoal powder of which the granule size is 80-200 meshes into a high-speed mixer, mixing uniformly, extruding and granulating by a twin-screw extruder. The invention also discloses a method for preparing a bactericidal, anti-UV, anti-static and flame retardant double-layer PPR pipe by using the natural anti-aging and anti-bacterial plastic granules. The method disclosed by the invention has the advantages of simple operation, strong practicality, low-cost and environment friendliness; the obtained natural anti-aging and anti-bacterial plastic granules have the advantages of good dispersity and stable performance and the obtained PPR pipe has excellent anti-aging and antibacterial performances and high cost-performance ratio and has relatively strong practical application value and market development prospects.

Description

technical field [0001] The invention relates to a preparation method of natural antiaging and antibacterial composite plastic particles and a double-layer PPR pipe prepared by using the plastic particles. Background technique [0002] PPR pipe is also called three-type polypropylene pipe. Compared with traditional cast iron pipes, galvanized steel pipes, cement pipes and other pipes, it has energy saving and material saving, environmental protection, light weight and high strength, corrosion resistance, easy construction and maintenance, and long service life. Advantages, it is widely used in building water supply and drainage, urban and rural water supply and drainage, industrial fluid transportation and other fields. At present, it is also the most widely used water supply pipe in home improvement projects, but this kind of pipe will age and breed bacteria after long-term use. Therefore, more and more people pay attention to the sanitation and aging performance of PPR pipe...

AI Technical Summary

Problems solved by technology

[0003]On the one hand, the molecular chain structure of PPR contains a large number of unstable tertiary carbon atoms, which is more susceptible to light, oxygen, and impurities (such as copper and iron ions) than PE. Therefore, the aging resistance is poor

On the other hand, after long-term use of conventional PPR pipes, scale impurities accumulated on the inner wall are easy to breed bacteria and other microorganisms, which poses a cer