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High rush-resistant polyvinyl chloride pipe for drinking and preparation method thereof

A polyvinyl chloride, high-impact technology, applied in applications, household appliances, tubular objects, etc., to achieve the effects of easy installation, improved flexibility, and improved environmental cracking resistance

Inactive Publication Date: 2007-02-28
河北宝硕管材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practice, it is found that it occurs from time to time due to instances of early ductile failure, so the toughness and strength of conventional hard PVC pipes need to be improved to meet the application requirements of wider fields in harsher environments

Method used

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  • High rush-resistant polyvinyl chloride pipe for drinking and preparation method thereof
  • High rush-resistant polyvinyl chloride pipe for drinking and preparation method thereof

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Embodiment Construction

[0022] The present invention provides a high-impact polyvinyl chloride pipe for drinking water and a preparation method thereof. The materials used in it include: PVC resin, heat stabilizer, lubricant, filler, and toughening agent.

[0023] The PVC-U resin is an SG-5 resin, and various index requirements are: apparent density: ≥0.4g / ml; viscosity: 107-118ml / g; volatile matter: ≤0.5%. In addition, in order to ensure the sanitary grade of the pipe, the residual vinyl chloride (VCM) monomer content in the resin is required to be ≥5ppm.

[0024] The thermal stabilizer refers to an auxiliary agent that can improve the thermal stability of the polymer. Its function is to prevent or inhibit the degradation of HCL during the resin processing process, and at the same time, it can maintain sufficient thermal stability during the effective use period of the product It also slows down the degradation caused by heat (light) action and prolongs the service life. Since PVC molecules are highly p...

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PUM

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Abstract

The invention discloses a high impact polyvinyl chloride pipe and preparing method in the tubular product technique domain, which concludes 100 parts of PVC resin, 0.4-4 parts of heat stabilizer, 1.4-3.0 parts of lube, 0-3 parts of loading agent, 5-10 parts of toughener and 0.03-0.1 part of colorant. The invention comprises the following steps: adding the PVC resin, heat stabilizer, lube, loading agent and toughener in the heat mixing machine; mixing evenlu at 115-120DEG C; forming very even mixture; cooling the mixture to 45DEG C; piling out tubular product from double screw extruder; cooling and forming the tubular product through vacuum sizing; fixing length; cutting and flaring; forming and packing for finished goods.

Description

Technical field [0001] The invention relates to an improved method for preparing a polyvinyl chloride pipe for drinking water, and belongs to the technical field of pipes. Background technique [0002] The urban water supply system is the most important basic project in urban construction. In the past hundred years, galvanized pipes have been used for water supply pipelines in urban buildings. With the development of science and technology and the improvement of living standards, people are increasingly concerned about the pollution caused by pipeline corrosion that often occurs in water supply systems, and replace traditional water supply pipeline materials with new water supply pipeline materials. It has become the consensus of all parties to improve the quality of water supply by using galvanized pipes. At present, the new water supply pipeline materials mainly include plastic pipes and plastic-metal composite pipes. Among them, rigid polyvinyl chloride (PVC-U) plastic pipes a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K5/09B29C47/92B29B7/00B29L23/00C08K3/26C08K3/04B29C48/40B29C48/92
CPCB29C48/92B29C48/40
Inventor 勾迈高长全王辉王海燕王文革赵峰南方代启勇周世力郭瑞
Owner 河北宝硕管材有限公司
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