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Preparation method of PVC soft horse

A technology for soft water pipes and hoses, which is applied in the field of plastic product processing, can solve the problems of low temperature resistance of PVC hoses, inconvenient transportation and installation, and high production costs, and achieve the effects of good product quality, not easy to age, and good low temperature performance.

Inactive Publication Date: 2013-03-27
QINGDAO XINWANTONG PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commonly used PVC hose is not resistant to low temperature, brittle, inconvenient for transportation and installation, and high in production cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The present invention is a kind of PVC hose preparation method, comprises the following steps:

[0017] (1) Mix the following ingredients by weight: 110 parts of PVC particles, 110 parts of polyurethane elastomer, 45 parts of plasticizer, 1 part of lubricant, and 12 parts of carbon black.

[0018] (2) The mixing time is 25 minutes, and the mixing temperature is 45 degrees Celsius;

[0019] (3) Add the mixed raw materials into the pressurized injection molding machine to form the pipeline;

[0020] (4) Wrap the fabric reinforcement layer outside the pipe;

[0021] (5) Add a polyethylene cured layer outside the fabric reinforcement layer;

[0022] (6) Put the hose completed in step (5) into the heating equipment, heat it, and apply pressure;

[0023] (7) The heating temperature is 140 degrees centigrade, and the pressure is 6 pascals. The lubricant in the step (1) is one or more mixtures of stearic acid, paraffin or oxidized polyethylene paraffin.

Embodiment 2

[0025] The present invention is a kind of PVC hose preparation method, comprises the following steps:

[0026] (1) Mix the following ingredients by weight: 110 parts of PVC particles, 110 parts of polyurethane elastomer, 45 parts of plasticizer, 1 part of lubricant, and 12 parts of carbon black.

[0027] (2) The mixing time is 35 minutes, and the mixing temperature is 65 degrees Celsius;

[0028] (3) Add the mixed raw materials into the pressurized injection molding machine to form the pipeline;

[0029] (4) Wrap the fabric reinforcement layer outside the pipe;

[0030] (5) Add a polyethylene cured layer outside the fabric reinforcement layer;

[0031] (6) Put the hose completed in step (5) into the heating equipment, heat it, and apply pressure;

[0032] (7) The heating temperature is 150 degrees centigrade, and the pressure is 7.5 pascals. The lubricant in the step (1) is one or more mixtures of stearic acid, paraffin or oxidized polyethylene paraffin.

[0033] The flex...

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PUM

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Abstract

The invention discloses a preparation method of a PVC soft horse. The method comprises the following steps: mixing the following ingredients, by weight: 110 parts of PVC particles, 110 parts of a polyurethane elastomer, 45 parts of a plasticizer, 1 part of a lubricant and 12 parts of carbon black, for 25-35 min at a temperature of 45-65 DEG C; adding the mixed raw material into a pressurized injection molding machine to form the horse; winding a fabric reinforced layer outside the horse; adding a polyethylene cured layer outside the fabric reinforced layer; and placing the completed soft hose into heating equipment, heating at 140-150 DEG C and pressurizing with pressure of 6-7.5 Pa. The soft water horse prepared by the method provided by the invention has advantages of good low temperature resistance, flexibility and antistatic property, good comprehensive performance, capability of meeting the usage requirements on a water soft hose material at -30 DEG C, good product quality and uneasiness for ageing, and can be used for storage and usage of low temperature gas or liquid.

Description

[0001] technical field [0002] The invention relates to a preparation method of a PVC soft water pipe, which belongs to the field of plastic product processing. Background technique [0003] PVC hose is widely used due to its good chemical resistance, ozone resistance, flame retardancy and high strength. However, the oil resistance and weather resistance of PVC pipes made of this material are poor. In order to make up for the lack of performance of PVC pipes, nitrile rubber is usually used to modify PVC to improve its oil resistance and weather resistance, and conductive carbon black is added to improve its resistance. However, the PVC hose material modified by nitrile rubber and conductive carbon black still has poor melt bonding performance and cannot meet the requirements of low temperature use. For example, low-temperature oil or gas such as low-temperature refined oil, liquefied natural gas, ethylene oxide, liquid carbon dioxide, and compressed natural gas require the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C69/00C08L27/06C08L75/04C08K3/04B29L23/00
Inventor 高义金
Owner QINGDAO XINWANTONG PLASTIC IND