Preparation process of steel belt reinforced spiral corrugated pipe

A spiral corrugated pipe and preparation process technology, applied in coating, organic chemistry, etc., can solve the problems of not meeting the high-performance anti-aging requirements, high-density polyethylene is easy to age, poor mechanical properties and easy to deform, etc., to improve antistatic Uniform performance and anti-oxidation performance, antistatic performance and aging resistance, anti-aging effect

Inactive Publication Date: 2020-02-07
安徽瑞琦塑胶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] High-density polyethylene is widely used in the preparation of pipelines due to its advantages of acid and alkali resistance, organic solvent resistance, excellent electrical insulation, and can still maintain a certain degree of toughness at low temperatures, high surface hardness and tensile strength, but due to its poor mechanical properties It is easy to deform, so when preparing pipelines, steel strips are added to the pipelines to increase the strength of the pipeline bellows. At the same time, because high-density polyethylene is easy to age and become brittle, anti-aging agents are usually added in the prior art to achieve polythene The anti-aging performance of ethylene, but because steel belt reinforced spiral corrugated pipes are usually used in external drainage pipelines or oil pipelines, etc., they are often exposed to light, and the existing anti-aging agents cannot meet the high-performance anti-aging requirements

Method used

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  • Preparation process of steel belt reinforced spiral corrugated pipe
  • Preparation process of steel belt reinforced spiral corrugated pipe
  • Preparation process of steel belt reinforced spiral corrugated pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The concrete preparation process of unsaturated antioxidant is as follows:

[0022] ①Add 7.1g of acrylamide to 200mL of ether and stir to dissolve, then add 12.2g of salicylaldehyde to it, raise the temperature to 60-65°C, stir and react for 5-6h, then cool down to room temperature, filter, wash and dry to obtain product A, The reaction structure is as follows;

[0023]

[0024]②Put 12mL of concentrated hydrochloric acid, 8g of paraformaldehyde and 150mL of dioxane into the reaction kettle at the same time, then add 10g of product A into it, stir and mix for 3-5min, then add 4.7g of 2-chloro-4 , 6-bis(ethylamino)-1,3,5-triazine, keep the amount of each addition at 100-150mg, the interval between each addition is 10-12min, after the addition is complete, control the temperature and stir React for 40-45h, then heat up to 50-60°C and reflux for 8-10h, then evaporate to remove the solvent, then wash the evaporated product with 5% sodium hydroxide solution and deionized ...

Embodiment 2

[0029] The concrete preparation process of unsaturated antioxidant is as follows:

[0030] ①Add 7.1g of acrylamide to 200mL of ether and stir to dissolve, then add 12.2g of salicylaldehyde to it, raise the temperature to 60-65°C, stir and react for 5-6h, then cool down to room temperature, filter, wash and dry to obtain product A;

[0031] ②Put 12mL of concentrated hydrochloric acid, 8g of paraformaldehyde and 150mL of dioxane into the reaction kettle at the same time, then add 4.8g of product A into it, stir and mix for 3-5min, then add 4.7g of 2-chloro- For 4,6-bis(ethylamino)-1,3,5-triazine, keep the amount of each addition at 100-150mg, and the interval between each addition is 10-12min. After the addition is complete, control the temperature to remain unchanged Stir the reaction for 40-45h, then heat up to 50-60°C and reflux for 8-10h, then evaporate to remove the solvent, and then wash the evaporated product with 5% sodium hydroxide solution and deionized to medium Afte...

Embodiment 3

[0034] The concrete preparation process of unsaturated antioxidant is as follows:

[0035] ①Add 7.1g of acrylamide to 200mL of ether and stir to dissolve, then add 12.2g of salicylaldehyde to it, raise the temperature to 60-65°C, stir and react for 5-6h, then cool down to room temperature, filter, wash and dry to obtain product A;

[0036] ②Put 12mL of concentrated hydrochloric acid, 8g of paraformaldehyde and 150mL of dioxane into the reaction kettle at the same time, then add 10g of product A into it, stir and mix for 3-5min, then add 4.7g of 2-chloro-4 , 6-bis(ethylamino)-1,3,5-triazine, keep the amount of each addition at 100-150mg, the interval between each addition is 10-12min, after the addition is complete, control the temperature and stir React for 40-45h, then heat up to 50-60°C and reflux for 8-10h, then evaporate to remove the solvent, then wash the evaporated product with 5% sodium hydroxide solution and deionized to neutral Finally, wash with acetone for 3-5 tim...

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PUM

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Abstract

The invention discloses a preparation process of a steel belt reinforced spiral corrugated pipe. The preparation process comprises the following specific preparation steps: an electroconductive anti-oxidation polymer is added into an extruder for melt extrusion, a steel belt is spirally input from one side, and extruded polyethylene wraps the steel belt from the inner side and outer side of a spiral corrugated pipe to obtain the steel belt reinforced spiral corrugated pipe. According to the process, the two ends of an unsaturated antioxidant and bisallyl benzoate added in the preparation process of the corrugated pipe contain olefin groups, so that the unsaturated antioxidant and the bisallyl benzoate both can be subjected to a polymerization reaction with two adjacent high-density polyethylene, the two adjacent high-density polyethylene can be cross-linked together through the unsaturated antioxidant and the bisallyl benzoate, after multiple high-density polyethylene is cross-linked,a network structure is formed, a large amount of the unsaturated antioxidant and the bisallyl benzoate are uniformly dispersed at the connection points of the network structure, so that the antistaticperformance and aging resistance are uniform, and the antistatic performance and oxidation resistance of the corrugated pipe are effectively improved.

Description

technical field [0001] The invention belongs to the field of corrugated pipe preparation and relates to a preparation process of a steel strip reinforced spiral corrugated pipe. Background technique [0002] High-density polyethylene is widely used in the preparation of pipelines due to its advantages of acid and alkali resistance, organic solvent resistance, excellent electrical insulation, and can still maintain a certain degree of toughness at low temperatures, high surface hardness and tensile strength, but due to its poor mechanical properties It is easy to deform, so when preparing pipelines, steel strips are added to the pipelines to increase the strength of the pipeline bellows. At the same time, because high-density polyethylene is easy to age and become brittle, anti-aging agents are usually added in the prior art to achieve polythene The anti-aging performance of ethylene, but because steel belt reinforced spiral corrugated pipes are usually used in external drain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/02C08F222/26C08F220/60C07D251/18B29C48/09B29C48/153
CPCB29C48/09B29C48/153C07D251/18C08F255/02C08F222/26
Inventor 阳志强徐家壮李忠明李茂盛梁丽
Owner 安徽瑞琦塑胶科技有限公司
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