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Reinforced polyethylene solid-wall pipe and preparation method thereof

A technology of polyethylene and solid-wall pipes, which is applied in the field of polyethylene pipes, can solve the problems of difficult charge conduction and discharge, increase the safety hazards of gas pipelines, and high resistivity of ordinary pipelines, so as to achieve difficult dielectric breakdown and increase Filling and toughness and the effect of using health and easily conducting charges

Pending Publication Date: 2021-10-22
杭州联通管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Plastic pipe is an insulating material with good electrical insulation performance, but its surface is prone to static electricity, especially when used as a gas pipe. Due to the complex environment of the gas pipe, not only the inner wall of the pipe generates charges due to the movement of gas, but also the surface of the pipe It is also easy to accumulate charges. The resistivity per unit volume of ordinary pipes is very large, which makes it difficult for charges to conduct and discharge, which increases the safety hazard of gas pipes.

Method used

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  • Reinforced polyethylene solid-wall pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, preparation one of modified filler

[0026] S1: Preparation of modified attapulgite: put 10 parts by mass of attapulgite powder in deionized water, stir evenly, add 0.45 parts by mass of trimethyldodecyl ammonium bromide, stir well, add 2.3 parts by mass part of aluminum hydroxide powder, stirred for 5H at 40°C, after the stirring was completed, 0.58 parts by mass of copper chloride solution was added, and continued to stir for 5H, during the stirring process, some solids would gradually precipitate out, and most of these solids It is the crystal of calcium hydroxide, and there are also some crystals of copper hydroxide. After the stirring is completed, filter with suction, remove the filtrate, wash with deionized water to remove the replaced sodium ions, calcium ions and unreacted copper ions, dry and purify modified attapulgite;

[0027] S2: Add 10 parts by mass of nano-alumina and 35 parts by mass of polyolefin elastomer into the mixer, and stir evenly...

Embodiment 2

[0029] Embodiment 2, the preparation two of modified filler

[0030] S1: Preparation of modified attapulgite: put 15 parts by mass of attapulgite powder in deionized water, stir well, add 0.8 mass parts of trimethyldodecyl ammonium bromide, stir well, add 3.2 mass parts part of aluminum hydroxide powder, stirred for 4H at 50°C, after the stirring was completed, 1.15 parts by mass of copper chloride solution was added, and continued to stir for 6.5H. During the stirring process, some solids would gradually precipitate out. Some of them are crystals of calcium hydroxide, and some of them are crystals of copper hydroxide. After the stirring is completed, filter with suction, remove the filtrate, wash with deionized water to remove the substituted sodium ions and calcium ions and unreacted copper ions, and dry to obtain Purified modified attapulgite;

[0031] S2: Add 15 parts by mass of nano-alumina and 40 parts by mass of polyolefin elastomer into the mixer, stir evenly at a spe...

Embodiment 3

[0033] Embodiment 3, preparation three of modified filler

[0034]S1: Preparation of modified attapulgite: put 20 parts by mass of attapulgite powder in deionized water, stir evenly, add 1.5 parts by mass of trimethyldodecyl ammonium bromide, stir well, add 5.2 mass parts part of aluminum hydroxide powder, stirred at 60°C for 3H, after the stirring was completed, 1.65 parts by mass of copper chloride solution was added, and continued to stir for 8H. During the stirring process, some solids would gradually precipitate out, and most of these solids It is the crystal of calcium hydroxide, and there are also some crystals of copper hydroxide. After the stirring is completed, filter with suction, remove the filtrate, wash with deionized water to remove the replaced sodium ions, calcium ions and unreacted copper ions, dry and purify modified attapulgite;

[0035] S2: Add 20 parts by mass of nano-alumina and 75 parts by mass of polyolefin elastomer into the mixer, stir evenly at a s...

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Abstract

The invention relates to the technical field of polyethylene pipes, in particular to a reinforced polyethylene solid-wall pipe and a preparation method thereof. The reinforced polyethylene solid-wall pipe comprises the following raw materials in parts by weight: 70-90 parts of high-density polyethylene, 5-30 parts of linear low-density polyethylene, 10-30 parts of a modified filler, 5-10 parts of a dispersant, 2-6 parts of a lubricant, 8-15 parts of a flame retardant, 3-8 parts of a heat stabilizer, 4-10 parts of an antioxidant, 2-8 parts of a coupling agent and 3-6 parts of color master batches. The invention aims to enable charges on the inner wall of the pipeline to be easily conducted to the surface of the pipeline and charges on the surface of the pipeline to be easily conducted to the environment, so that the antistatic property of the pipeline is improved, the pipeline has good toughness and thermal stability, and the safety of the pipeline in the using process is improved.

Description

technical field [0001] The invention relates to the technical field of polyethylene pipes, in particular to a reinforced polyethylene solid-wall pipe and a preparation method thereof. Background technique [0002] Polyethylene pipe, also known as high-density polyethylene, is a highly crystalline, non-polar thermoplastic resin with excellent low temperature resistance and impact resistance, and good chemical stability. Its application ranges from natural gas small cross-section yellow pipes Thick-walled black pipes to industrial and urban pipelines, involving urban water supply, drainage, urban gas supply, cable protection pipes, and agricultural irrigation, etc., a wide range of applications put forward higher requirements for the performance of polyethylene pipes. [0003] Plastic pipe is an insulating material with good electrical insulation performance, but its surface is prone to static electricity, especially when used as a gas pipe. Due to the complex environment of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L79/08C08L23/00C08K9/04C08K3/22C08K5/10C08K3/34C08K9/06
CPCC08L23/06C08K2003/2227C08L2201/04C08L2201/02C08L2203/18C08L2207/062C08L23/0815C08L79/08C08L23/00C08K9/04C08K3/346C08K3/22C08K5/10C08K3/34C08K9/06
Inventor 陈毅明章振华叶宽陈建章建忠
Owner 杭州联通管业有限公司
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