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High impact resistance and aging resistance PVC-M pipe

A PVC-M, anti-aging technology, applied in the field of high-impact anti-aging PVC-M pipes, can solve the problems of easy aging, poor impact resistance and toughness, cracking, etc., and achieve the effect of improving anti-aging ability

Inactive Publication Date: 2015-10-28
大禹节水(天津)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also disadvantages such as poor impact strength, insufficient toughness, and easy aging.
On the one hand, due to its poor impact resistance and toughness, it is prone to brittle failure during transportation, installation and use; on the other hand, the pipe is easy to age under the condition of strong sunlight and ultraviolet rays, which makes it prone to water leakage during long-term use. Water seepage, cracking, so that its application is greatly limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The high-impact and aging-resistant PVC-M pipe of the present invention comprises the following components in parts by weight: PVC resin: 85 parts; light calcium carbonate: 7 parts; MBS: 3 parts; chlorinated polyethylene: 3 parts; Additive: 3 parts; calcium sulfate whisker: 3 parts; calcium zinc stabilizer: 4 parts; lubricant: 0.3 part; carbon black: 0.3 part; hindered phenols: 0.4 part; mercaptan: 0.4 part.

[0018] The production steps of high-impact and anti-aging PVC-M pipes using the above components are:

[0019] 1. Put the raw materials in the above ratio into a high-speed mixer and stir to obtain a mixture 1. The speed of the high-speed mixer is 1200 rpm, the stirring time is 8 minutes, and the stirring temperature is 100°C;

[0020] 2. Put the mixture 1 in the step 1 into a low-speed cooling mixer and mix to obtain the mixture 2. The speed of the low-speed mixing mixer is 60 rpm, the stirring time is 8 minutes, and the stirring temperature is 35°C;

[0021] 3....

Embodiment 2

[0023] The high-impact and aging-resistant PVC-M pipe of the present invention comprises the following components in parts by weight: PVC resin: 60 parts; light calcium carbonate: 3 parts; MBS: 1 part; chlorinated polyethylene: 1 part; Additive: 1 part; calcium sulfate whisker: 1 part; calcium zinc stabilizer: 2 parts; lubricant: 0.1 part; carbon black: 0.1 part; hindered phenols: 0.1 part; mercaptan: 0.1 part.

[0024] The production steps of high-impact and anti-aging PVC-M pipes using the above components are:

[0025] 1. Put the above materials into a high-speed mixer and stir to obtain mixture 1. The speed of the high-speed mixer is 1200 rpm, the stirring time is 8 minutes, and the stirring temperature is 100°C;

[0026] 2. Put the mixture 1 in the step 1 into a low-speed cooling mixer and mix to obtain the mixture 2. The speed of the low-speed mixing mixer is 60 rpm, the stirring time is 8 minutes, and the stirring temperature is 35°C;

[0027] 3. Extrude the mixture 2 ...

Embodiment 3

[0029] The high-impact and aging-resistant PVC-M pipe of the present invention comprises the following components in parts by weight: PVC resin: 72 parts; light calcium carbonate: 5 parts; MBS: 1.5 parts; chlorinated polyethylene: 1.3 parts; Auxiliary: 1.5 parts; calcium sulfate whisker: 1.5 parts; calcium zinc stabilizer: 2.5 parts; lubricant: 0.25 parts; carbon black: 0.15 parts; hindered phenols: 0.2 parts; mercaptan: 0.2 parts.

[0030] The production steps of high-impact and anti-aging PVC-M pipes using the above components are as follows:

[0031] 1. Put the above materials into a high-speed mixer and stir to obtain mixture 1. The speed of the high-speed mixer is 1200 rpm, the stirring time is 8 minutes, and the stirring temperature is 100°C;

[0032] 2. Put the mixture 1 in the step 1 into a low-speed cooling mixer and mix to obtain the mixture 2. The speed of the low-speed mixing mixer is 60 rpm, the stirring time is 8 minutes, and the stirring temperature is 35°C;

...

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PUM

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Abstract

The present invention relates to the technical field of PVC pipes, and discloses a high impact resistance and aging resistance PVC-M pipe, which comprises, by weight, 60-85 parts of a PVC resin, 3-7 parts of light calcium carbonate, 1-3 parts of MBS, 1-3 parts of chlorinated polyethylene, 1-3 parts of a processing aid, 1-3 parts of calcium sulfate crystal whisker, 2-4 parts of a calcium zinc stabilizer, 0.1-0.3 part of a lubricant, 0.1-0.3 part of carbon black, 0.1-0.4 part of hindered phenol, and 0.1-0.4 part of mercaptan. According to the present invention, based on the aging mechanism of the pipe, through the synergy effect of 2,6-tert-butyl p-phenol and ethyl mercaptan, the mechanisms that the free radical transfers and the non-activated stable product alcohol is produced are used to terminate the chain reaction and inhibit the free radical generation, such that the PVC product produces the good light stability so as to improve the aging resistance of the PVC plastic finished product.

Description

technical field [0001] The invention relates to the technical field of PVC pipes, and discloses a PVC-M pipe with high impact resistance and aging resistance. Background technique [0002] Up to now, 70% of polyvinyl chloride resin in my country is made from coal. Compared with traditional pipes such as ductile iron pipes and polyethylene pipes, PVC plastic pipes, namely polyvinyl chloride pipes, have obvious advantages. PVC pipe is made of polyvinyl chloride resin as the main raw material, and is prepared by adding various auxiliary materials. It has the characteristics of corrosion resistance, low price, and hard texture. But there are also disadvantages such as poor impact strength, insufficient toughness, and easy aging. On the one hand, due to its poor impact resistance and toughness, it is prone to brittle failure during transportation, installation and use; on the other hand, the pipe is easy to age under the condition of strong sunlight and ultraviolet rays, whi...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L51/04C08L23/28C08K13/04C08K3/26C08K7/08C08K3/04C08K5/37C08K5/13
CPCC08L27/06C08L2201/08C08L2203/18C08L2205/035C08L2205/06
Inventor 张学双李娇战国隆牛少卿
Owner 大禹节水(天津)有限公司
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