A termite-proof polyethylene gas pipeline and its preparation method

A gas pipeline and termite-proof technology, which is applied to pipes, rigid pipes, mechanical equipment, etc., can solve the problems of being easily bitten by termites, mice and other animals, low hardness of polyethylene pipes, and hidden safety hazards of gas pipelines. The effect of improving market competitiveness, low equipment requirements and long service life

Active Publication Date: 2020-09-01
LINHAI WEIXING NEW BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hardness of polyethylene pipes is low, and it is easy to be bitten by termites, mice and other animals during use, and even bite through the pipes. There is a great safety hazard when used in gas pipes; in addition, due to the low hardness of polyethylene pipes, the surface is easy to Being scratched will cause insufficient air pressure resistance and also pose a safety risk

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Dissolve 10kg of vacuum-dried PE powder in 40kg of decahydronaphthalene / cyclohexane mixed solution in an oil bath at 70°C, in a mixed solvent with a mass ratio of 7 / 3, and stir evenly to form a uniform Transparent polymer solution, add 0.5% halothrin, 0.5% UV326, 0.5% light stabilizer 622 and antioxidant 1010 into the polymer solution, stir well, and set aside.

[0024] Under the condition of 70°C, spray the PE polymer solution on the inner base layer 1 of the PE gas pipe that has been cooled to 70°C, put the sprayed pipe into the drying tunnel at 80°C for volatilization, and dry it for 30 minutes. Spraying is carried out again and again, the spraying thickness is 3mm, and the spraying area and the drying area are opened at the same time. The two areas are recovered by steam, and the recovered organic solvent steam is cooled to recover the solvent. The solvent can be separated and purified. Continue to use, after the solvent volatilizes, a polyethylene gas pipeline with...

Embodiment 2

[0027] Dissolve 10kg of vacuum-dried i-PP powder in a mixed solvent of 50kg of decahydronaphthalene / cyclohexanone in an oil bath at 70°C, with a mass ratio of 6 / 4, and stir evenly to form a uniform and transparent solution , add 0.5% halothrin, 1% UV327, 0.5% light stabilizer 326 and antioxidant 1010 of i-PP polymer mass, set aside.

[0028] At 80°C, spray the i-PP polymer solution onto the gas PE pipe heated to 80°C, place the sprayed pipe in an oven at 80°C for volatilization, and place the sprayed pipe in an 80°C The drying tunnel at ℃ is evaporated, and after 30 minutes of drying, spraying is carried out again, and the spraying thickness is 4mm. At the same time, the spraying area and the drying area are opened. The two areas are recovered by steam, and the recovered organic solvent After the steam is cooled, the solvent can be recovered, and the solvent can be used continuously after separation and purification. After the solvent evaporates, a polyethylene gas pipeline wi...

Embodiment 3

[0031] Dissolve 10kg of vacuum-dried s-PP powder in an oil bath at 70°C in a mixed solvent of 100kg of cyclohexane / acetone / dimethylformamide, with a mass ratio of 8 / 1 / 1, and stir evenly , to form a uniform and transparent solution, add 0.5% of s-PP polymer mass halothrin, 0.5% UV327, 0.5% light stabilizer 326 and antioxidant 1010, and set aside.

[0032] At 80°C, spray the s-PP polymer solution onto the gas PE pipe heated to 70°C, put the sprayed pipe into the drying tunnel at 80°C for volatilization, and put the sprayed pipe into the 80°C The drying tunnel at ℃ is evaporated, and after 30 minutes of drying, spraying is carried out again, and the spraying thickness is 4mm. At the same time, the spraying area and the drying area are opened. The two areas are recovered by steam, and the recovered organic solvent After the steam is cooled, the solvent can be recovered, and the solvent can be used continuously after separation and purification. After the solvent evaporates, a poly...

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Abstract

The invention discloses an anti-termite polyethylene gas pipeline and a preparation method thereof. The anti-termite polyethylene gas pipeline comprises an inner base layer and an outer coating, wherein the outer coating is an anti-termite layer, sprayed to the outer surface of the inner base layer by a spraying machine in pipeline production and prepared from polymer, organic solvents, anti-termite agents and additives. The outer coating with a limited ratio is sprayed to the outside of the polyethylene inner base layer of the gas pipeline, so that the prepared polyethylene gas pipeline has the advantages of anti-termite property, scratch resistance, high safety, repairability after scratch and the like, the peeling strength of the inner base layer and the outer coating is 6-10N / mm, the service life of the gas pipeline is greatly prolonged, market competitiveness is improved, and the economic benefit of enterprises is improved.

Description

technical field [0001] The invention belongs to the technical field of transportation pipelines, and in particular relates to a termite-proof polyethylene gas pipeline and a preparation method thereof. Background technique [0002] The raw material used in polyethylene pipes is polyethylene, which is polymerized into polyethylene. The gas pipes made of this material are chemically inert. The advantages of long length and easy installation are more and more used in gas transmission. However, the hardness of polyethylene pipes is low, and it is easy to be bitten by termites, mice and other animals during use, and even bite through the pipes. There is a great safety hazard when used in gas pipes; in addition, due to the low hardness of polyethylene pipes, the surface is easy to Being scratched will cause insufficient air pressure resistance and also pose a safety risk. Contents of the invention [0003] In view of the above-mentioned problems existing in the prior art, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D123/06C09D123/12C09D5/14C09D7/48F16L9/14
CPCC08K5/10C08K5/1345C09D5/14C09D123/06C09D123/12F16L9/14
Inventor 郭莉莉唐晓朝
Owner LINHAI WEIXING NEW BUILDING MATERIALS CO LTD
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