Highly weather-resistance co-extruding material PVC pipe and production method thereof

Abstract

The present invention discloses a highly weather-resistance co-extruding material PVC pipe, which is prepared from the following raw materials: polycarbonate, PMMA, insulating ceramic particles, glass fibers, titanium dioxide, talc powder, magnesium oxide, a stabilizer, ACM, sodium stearate, cupric oxalate, dimethyl trimethylsilylmethylphosphonate, an antistatic agent, a coloring pigment, a lubricant, a dispersant, an antioxidant, an ultraviolet absorber, acid-resistant ultramarine blue, a fluorescent whitening agent, a PVC lubricant, a smoke inhibitor, and the balance of PVC. The production method comprises eight steps such as material preparing, material adding, cooling, extrusion, traction, cooling, code spraying, and warehousing. According to the present invention, the pollution of the heavy metal lead is effectively avoided, the impact resistance, the stress distribution performance, the thermal expansion and cold contraction performance, and the electrical insulation property of the PVC pipe material are substantially improved, and the waste insulating ceramic and other materials are effectively utilized so as to reduce the pipe material production cost and improve the resource recycling rate.

Description

technical field [0001] The invention relates to a high-weather-resistant co-extruded PVC pipe and a production method, belonging to the field of PVC pipe production. Background technique [0002] At present, PVC pipes are widely used in the fields of water supply and drainage, power cable laying, etc., but the commonly used PVC pipes are currently in use. Performance, electrical insulation performance, thermal expansion and contraction resistance and other properties are poor, and because it is often buried deep underground or directly exposed in the air, it is severely damaged by ultraviolet rays, air erosion, and external shocks, resulting in The aging phenomenon of PVC pipes or the phenomenon of damage due to external force is extremely serious. In order to overcome this problem, the commonly used method is to add heat stabilizers, lubricants, processing modifiers, impact modifiers, fillers, etc. to PVC profiles. Auxiliary ingredients such as aging agents and colorants a...

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Problems solved by technology

[0002] At present, PVC pipes are widely used in the fields of water supply and drainage, power cable laying, etc., but the commonly used PVC pipes are currently in use. Performance, electrical insulation performance, thermal expansion and contraction resistance and other properties are poor, and because it is often buried deep underground or directly exposed in the air, it is severely damaged by ultraviolet rays, air erosion, and external shocks, resulting in The aging phenomenon of PVC pipes or the phenomenon of damage due to external force is extremely serious. In order to overcome this problem, the commonly used method is to add heat stabilizers, lubricants, processing modifiers, impact modifiers, fillers, etc. to PVC profiles. Auxiliary ingredients such as aging agents and colorants are used to improve the aging resistance of PVC profiles, but these auxiliary additives are often expensive, which increases the production cost of PVC profiles and is not conducive to its sales. At the same time, among the auxiliary additives currently used , often contains the heavy metal "lead", so it also increases the risk of PVC profiles causing harm to the surrounding environment and the human body. There are many disadvantages such as PVC deformation caused by uneven distribution and bending and twisting caused by inconsistent thermal expansion and contraction rates. Therefore, it is necessary to develop a new PVC pipe formula to overcome many disadvantages in use.

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