PVC (Polyvinyl Chloride) pipe and preparation method thereof

Abstract

The invention discloses a PVC (Polyvinyl Chloride) pipe and a preparation method thereof. The PVC pipe is prepared from the following raw materials in parts by weight: 40-60 parts of PVC resin, 3-5 parts of a compound lead salt stabilizer, 30-45 parts of calcium stearate, 1-3 parts of dioctyl phthalate, 6-8 parts of an antioxidant, 5-10 parts of polymer ester group calcium, 8-12 parts of a plasticizer, 0.3-0.8 part of titanium dioxide, 0.3-0.7 part of carbon black, 2-5 parts of a lubricating agent, 8-12 parts of trioctyl phosphate, 1-3 parts of zinc oxide, 1-3 parts of a stabilizer, 2-4 partsof an inorganic antibacterial agent and 2-6 parts of an environmental-friendly flexibilizer.

Description

technical field [0001] The invention belongs to the technical field of PVC pipes, in particular to an oxidation process, specifically to a PVC pipe and a preparation method thereof. Background technique [0002] PVC pipe is made of polyvinyl chloride resin, stabilizer, lubricant, etc., and then extruded by hot pressing. It is the earliest plastic pipe that has been developed and applied. PVC pipe has strong corrosion resistance, easy bonding, low price, and hard texture. However, due to the leakage of monomers and additives, it is only suitable for water supply systems with a delivery temperature not exceeding 45°C. Plastic piping is used in applications for drainage, waste water, chemicals, heating and cooling fluids, food, ultrapure liquids, slurries, gases, compressed air and vacuum systems. PVC can be divided into soft PVC and hard PVC. Among them, hard PVC accounts for about 2 / 3 of the market, and soft PVC accounts for 1 / 3. Soft PVC is generally used for floors, ceil...

AI Technical Summary

Problems solved by technology

[0003] Compared with PE pipes, PVC pipes have the advantages of better tensile and compressive strength, excellent corrosion resistance and low price. They are widely used, but they are prone to brittleness during use, which affects their service life.

In order to ensure the permanence of the toughness of PVC pipes, PVC pipes need to be modified. If only a certain type of elastomer or a certain type of rigid body is used for toughening, it will cause an imbalance in the performance indicators of toughness, stiffness, and elastic modulus. Therefore, it is manufactured It is the main technical problem at present to maintain high strength while resisting impact and cracking, and to have good corrosion resistance.