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PVC pipe extrusion moulding process capable of effectively increasing impact strength

A technology of impact strength and PVC pipes, applied in the direction of organic insulators, plastic/resin/wax insulators, electrical components, etc., to achieve the effects of convenient construction, excellent chemical stability, and excellent dielectric properties

Inactive Publication Date: 2017-12-22
安徽博泰塑业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the prior art and provide a PVC pipe extrusion molding process that effectively improves the impact strength

Method used

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  • PVC pipe extrusion moulding process capable of effectively increasing impact strength
  • PVC pipe extrusion moulding process capable of effectively increasing impact strength
  • PVC pipe extrusion moulding process capable of effectively increasing impact strength

Examples

Experimental program
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Effect test

Embodiment 1

[0046]Embodiment 1: A PVC pipe extrusion molding process that effectively improves impact strength. The pipe formulation includes PVC resin, impact modifier, stabilizer, processing modifier, filler, colorant and external lubricant, specifically including Prepared by the following steps: various materials-weighing-kneading-extrusion granulation-extrusion molding-cooling molding-cutting-inspection-finished product;

[0047] 2) Mixing process

[0048] When mixing at high speed, the additive penetrates into the voids of the PVC resin, so that the additive is evenly dispersed in the resin. Considering that the temperature above 1000°C is conducive to the evaporation of water vapor in the material, the temperature of the heat mixer is set at 100-1200°C ; In order to allow the additive to fully contact with the PVC particles and reduce the adsorption of the filler to the additive, the heat mixer should be started immediately after adding the PVC resin.

[0049] Add stabilizer at a t...

Embodiment 2

[0083] Embodiment 2: A PVC pipe extrusion molding process that effectively improves impact strength. The pipe formulation includes PVC resin, impact modifier, stabilizer, processing modifier, filler, colorant and external lubricant, specifically including Prepared by the following steps: various materials-weighing-kneading-extrusion granulation-extrusion molding-cooling molding-cutting-inspection-finished product;

[0084] 3) Mixing process

[0085] When mixing at high speed, the additive penetrates into the voids of the PVC resin, so that the additive is evenly dispersed in the resin. Considering that the temperature above 1000°C is conducive to the evaporation of water vapor in the material, the temperature of the heat mixer is set at 100-1200°C ;In order to allow the additive to fully contact with the PVC particles and reduce the adsorption of the filler to the additive, the heat mixer should be started immediately after adding the PVC resin;

[0086] Add stabilizer at tem...

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Abstract

A PVC pipe extrusion moulding process capable of effectively increasing impact strength is characterized in that: a formula of the PVC pipe includes a PVC resin / chloroprene rubber copolymer, an anti-impact modifier, a stabilizing agent, a processing modifier, filler, pigments, and an external lubricant. The extrusion moulding process includes the steps of: preparing and weighing the raw materials, kneading the raw materials, performing extrusion granulation, performing extrusion shaping, performing cooling shaping, cutting the product, inspecting the product and delivering a final product. A PVC pipe produced through the process is low in relative density which is 1 / 4-1 / 7 as that of metal, has excellent electric-insulation and chemical stability, is convenient to install and construct and easy to repair, and is low in unit energy consumption.

Description

Technical field: [0001] The invention relates to the field of pipe preparation, in particular to a PVC pipe extrusion molding process for effectively improving impact strength. Background technique: [0002] PVC is a white powder with an amorphous structure, the degree of branching is small, the relative density is about 1.4, the glass transition temperature is 77-90°C, it begins to decompose at about 170°C, and it has poor stability to light and heat. When exposed to sunlight, it will decompose to produce hydrogen chloride, and further autocatalyze the decomposition, causing discoloration and rapid decline in physical and mechanical properties. In practical applications, stabilizers must be added to improve the stability to heat and light. [0003] The molecular weight of industrially produced PVC is generally in the range of 50,000 to 110,000, with a large polydispersity, and the molecular weight increases with the decrease of the polymerization temperature; there is no fi...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L3/06C08L91/00C08L91/06C08L11/00C08L61/06C08K5/053C08K5/098C08B31/06H01B3/44H01B3/32
CPCC08B31/066C08L3/06C08L27/06C08L2203/18C08L2205/02C08L2205/035H01B3/32H01B3/443C08L91/00C08L91/06C08L11/00C08L61/06C08K5/053C08K5/098
Inventor 许光辉李明张燕叶芝南崔亮郭兵张友亮张跃朱学超柏成锐
Owner 安徽博泰塑业科技有限公司
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