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Weather-resistant PE gas pipe

A gas pipe and weather resistance technology, applied in the field of pipes, can solve the problem that the weather resistance cannot achieve satisfactory results, and achieve the effect of increasing the scope of use, good weather resistance, and improving weather resistance.

Inactive Publication Date: 2015-09-23
GUANGXI JINTAN PIPE IND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the weather resistance of PE gas pipes currently on the market still cannot achieve satisfactory results.

Method used

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  • Weather-resistant PE gas pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A PE gas pipe with good weather resistance, made of the following raw materials in weight percentage: polyethylene (HDPE) 95%, light stabilizer 0.6%, carbon black 0.7%, TNPP 0.7%, isooctyl thioglycolate 0.7%, Di-n-octyltin maleate 0.8%, Zinc oxide 0.4%, Titanium oxide 0.5%, Clay 0.6%.

[0019] The above-mentioned PE gas pipe with good weather resistance, its preparation method comprises the following steps:

[0020] 1) Put polyethylene (HDPE), light stabilizer, carbon black, TNPP, isooctyl thioglycolate, and di-n-octyltin maleate into the plasticizing equipment according to the above weight percentage, heat to 120 degrees, and melt into a melt, spare;

[0021] 2) Put zinc oxide, titanium oxide, and clay into the crushing equipment according to the above weight percentage, crush them into 300 meshes, then put them into the mixing equipment, stir at a speed of 3500r / min for 30min, and mix evenly to make mixed powder A. spare;

[0022] 3) Put the melt produced in step...

Embodiment 2

[0027] A PE gas pipe with good weather resistance, made of the following raw materials in weight percentage: polyethylene (HDPE) 97%, light stabilizer 0.3%, carbon black 0.4%, TNPP 0.3%, thioglycolic acid isooctyl Ester 0.5%, Di-n-octyltin maleate 0.6%, Zinc oxide 0.2%, Titanium oxide 0.3%, Clay 0.4%.

[0028] The above-mentioned PE gas pipe with good weather resistance, its preparation method comprises the following steps:

[0029] 1) Put polyethylene (HDPE), light stabilizer, carbon black, TNPP, isooctyl thioglycolate, and di-n-octyltin maleate into the plasticizing equipment according to the above weight percentage, heat to 150 degrees, and melt into a melt, spare;

[0030] 2) Put zinc oxide, titanium oxide, and clay into the crushing equipment according to the above weight percentage, crush them into 400 meshes, then put them into the mixing equipment, stir at a speed of 3000r / min for 60min, and mix evenly to make mixed powder A. spare;

[0031] 3) Put the melt produc...

Embodiment 3

[0036] A PE gas pipe with good weather resistance, made of the following raw materials in weight percentage: polyethylene (HDPE) 96.1%, light stabilizer 0.5%, carbon black 0.5%, TNPP 0.4%, isooctyl thioglycolate 0.6%, Di-n-octyltin maleate 0.7%, Zinc oxide 0.3%, Titanium oxide 0.4%, Clay 0.5%.

[0037] The above-mentioned PE gas pipe with good weather resistance, its preparation method comprises the following steps:

[0038] 1) Put polyethylene (HDPE), light stabilizer, carbon black, TNPP, isooctyl thioglycolate, and di-n-octyltin maleate into the plasticizing equipment according to the above weight percentage, heat to 130 degrees, and melt into a melt, spare;

[0039] 2) Put zinc oxide, titanium oxide, and clay into the crushing equipment according to the above weight percentage, crush them into 350 meshes, then put them into the mixing equipment, stir at a speed of 3300r / min for 50min, and mix evenly to make mixed powder A. spare;

[0040] 3) Put the melt produced in st...

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Abstract

The invention discloses a weather-resistant PE gas pipe. The raw materials of the pipe include, by weights: 95% to 97% of HDPE (high-density polyethylene), 0.3% to 0.6% of light stabilizer 622, 0.4% to 0.7% of carbon black, 0.3% to 0.7% of TNPP, 0.5% to 0.7% of thioglycol isooctylester, 0.6% to 0.8% of di-n-octyltin moleate, 0.2% to 0.4% of zinc oxide, 0.3% to 0.5% of titanium oxide and 0.4% to 0.6% of clay. The pipe has high light stability and thermal stability and fine oxidation resistance, aging resistance, flame resistance and acid and alkali resistance, the strength, stiffness and modulus of the pipe are maintained, the weather resistance of the pipe is improved, the fine performances can be maintained after long-term usage in complex and changing natural environment, and the fine weather resistance is provided.

Description

technical field [0001] The invention relates to the field of pipe materials, in particular to a PE gas pipe with good weather resistance. Background technique [0002] Natural gas generally needs to be transported to the user through pipelines from a long distance, so more pipeline installations are required for natural gas. However, due to the complex and diverse natural environment, these factors make the installation of gas pipelines complicated, and the installation costs and technical requirements are high. . At present, gas pipelines are mainly made of polymer materials, but the composition of these pipelines is not reasonable enough, so that the strength, stiffness, modulus and weather resistance of gas pipelines cannot achieve satisfactory results. Especially in terms of weather resistance, although many gas pipes have good strength, stiffness, and modulus, the weather resistance of these gas pipes is not satisfactory. Especially with the pollution of the environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/02C08K5/57C08K5/526C08K5/41C08K3/34C08K3/22C08K3/04
CPCC08K13/02C08K3/04C08K3/22C08K3/346C08K5/41C08K5/526C08K5/57C08K2003/2241C08K2003/2296C08L23/06C08L2203/18C08L2207/062
Inventor 王幼芳冷建波吴品玲
Owner GUANGXI JINTAN PIPE IND TECH CO LTD
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