Ultra-high molecular weight polyethylene/polyvinyl chloride composite pipe and its manufacturing method

Abstract

The invention relates to an ultra-high molecular weight polyethylene / polyvinyl chloride composite pipe and a manufacturing method thereof. It is composed of an ultra-high molecular weight polyethylene inner tube and a polyvinyl chloride outer wall, wherein: a. The ultra-high molecular weight polyethylene inner tube includes the following raw material components in parts by weight: ①Ultra-high molecular weight polyethylene Molecular weight polyethylene 100, ② polyethylene wax with molecular weight 2000-10000 1-10, b. PVC outer wall includes: polyvinyl chloride resin (PVC) 100, impact modifier 5-15, heat stabilizer 0.5-8 , lubricant 0.07-1, appropriate amount of pigment. The invention provides an ideal ultra-high molecular weight polyethylene / polyvinyl chloride composite pipe material with wear resistance, corrosion resistance, high strength, creep resistance, and firm combination of inner pipe and outer wall, and a manufacturing method with firm compounding and low production cost . It is suitable for conveying corrosive, adhesive and strong abrasive materials.

Description

technical field [0001] The invention relates to an ultra-high molecular weight polyethylene / polyvinyl chloride composite pipe and a manufacturing method thereof. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) pipes are wear-resistant, corrosion-resistant, chemically stable, and have low surface polarity. fluid material. However, there are deficiencies in tensile strength, low shear strength, and poor creep resistance, which limit its application. [0003] Toughened polyvinyl chloride (PVC) material has high tensile strength, high impact strength, and good rigidity, but its wear resistance, anti-adhesion, and solvent resistance are far inferior to ultra-high molecular weight polyethylene pipes, and it is difficult to meet relevant sanitary technical standards. Its application is also limited. [0004] The metal-plastic composite pipes in the prior art consume a large amount of metal materials. The manufacturing process requires flanging, we...

AI Technical Summary

Problems solved by technology

However, there are deficiencies in tensile strength, low shear strength, and poor creep resistance, which limit its application.

[0003] Toughened polyvinyl chloride (PVC) material has high tensile strength, high impact strength, and good rigidity, but its wear resistance, anti-adhesion, and solvent resistance are far inferior to ultra-high molecular weight polyethylene pipes, and it is difficult to meet relevant sanitary technical standards

Its application is also limited

[0004] The metal-plastic composite pipes in the prior art consume a large amount of metal materials. The manufacturing process requires flanging, welding flanges and other manufacturing processes. And the processing technology is complex, the production cost is high

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