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Modified polyethylene corrugated pipe and preparing method thereof

A technology of polyethylene and bellows, which is applied in the direction of hoses, pipes, mechanical equipment, etc., can solve the problems of poor low-temperature impact resistance, low thermal deformation temperature, and poor heat resistance, and achieve good low-temperature impact resistance, Effect of high heat distortion temperature, excellent flame retardancy and electrical insulation

Inactive Publication Date: 2017-01-11
JIANGSU CHANGFENG BELLOWS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyethylene corrugated pipe commonly used in the industry has a low heat distortion temperature, poor heat resistance, and poor low temperature impact resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] First, take 300 parts of polyethylene, 40 parts of polypropylene, 15 parts of polytetrafluoroethylene, 10 parts of calcium stearate, 16 parts of carbon black, 30 parts of EVA resin, 24 parts of sodium silicate powder, Malay Anhydride 36 parts.

[0014] Then, pour the raw materials into the mixer, mix at a speed of 40rpm for 20 minutes, mix evenly, put the mixture into the twin-screw extruder for blending and extrusion, and then granulate to obtain granular modified polyethylene material, and then pour the obtained granular modified polyethylene material into a 5% potassium permanganate solution to soak for 5 hours, and let it dry naturally for later use.

[0015] Then, the granular modified polyethylene material is added into the extrusion molding machine, and the modified polyethylene corrugated pipe is manufactured by extrusion molding.

[0016] Finally, put the obtained modified polyethylene corrugated pipe in an oven at 45°C and let it stand for 2 hours, and then p...

Embodiment 2

[0018] First, take 320 parts of polyethylene, 50 parts of polypropylene, 25 parts of polytetrafluoroethylene, 12 parts of calcium stearate, 22 parts of carbon black, 40 parts of EVA resin, 28 parts of sodium silicate powder, Malay Anhydride 42 parts.

[0019] Then, pour the taken raw materials into a mixer, mix them at a speed of 60rpm for 15 minutes, and after mixing evenly, put the mixture into a twin-screw extruder for blending and extrusion, and then granulate to obtain granular modified polyethylene material, and then the obtained granular modified polyethylene material is poured into a concentration of 8% potassium permanganate solution and soaked for 3 hours, and then dried naturally for later use.

[0020] Then, the granular modified polyethylene material is added into the extrusion molding machine, and the modified polyethylene corrugated pipe is manufactured by extrusion molding.

[0021] Finally, put the obtained modified polyethylene corrugated pipe in an oven at ...

Embodiment 3

[0023] First, take 310 parts of polyethylene, 45 parts of polypropylene, 20 parts of polytetrafluoroethylene, 11 parts of calcium stearate, 19 parts of carbon black, 35 parts of EVA resin, 26 parts of sodium silicate powder, Malay Anhydride 39 parts.

[0024] Then, pour the raw materials into the mixer, mix at a speed of 50rpm for 18 minutes, and after mixing evenly, put the mixture into a twin-screw extruder for blending and extrusion, and then granulate to obtain granular modified polyethylene material, and then pour the obtained granular modified polyethylene material into a 6.5% potassium permanganate solution to soak for 4 hours, and let it dry naturally for later use.

[0025] Then, the granular modified polyethylene material is added into the extrusion molding machine, and the modified polyethylene corrugated pipe is manufactured by extrusion molding.

[0026] Finally, put the obtained modified polyethylene corrugated pipe in an oven at 45°C and let it stand for 2.5 ho...

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PUM

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Abstract

The invention discloses a modified polyethylene corrugated pipe and preparing method thereof. The modified polyethylene corrugated pipe is made of modified polyethylene material which comprises, by weight, the following raw material: 300-320 parts of polyethylene, 40-50 parts of polypropylene, 15-25 parts of polytetrafluoroethylene, 10-12 parts of calcium stearate, 16-22 parts of carbon black, 30-40 parts of EVA resin, 24-28 parts of sodium silicate powder, 36-42 parts of maleic anhydride. The modified polyethylene corrugated pipe has relatively high heat distortion temperature, comparatively good low-temperature impact resistance performance, and can be used in the environment of -20-80oC for a long time. The modified polyethylene corrugated pipe also has excellent flame retardance and electrical insulation.

Description

technical field [0001] The invention relates to the field of corrugated pipe manufacturing, more precisely, it relates to a modified polyethylene corrugated pipe and a preparation method thereof. Background technique [0002] Polyethylene corrugated pipe is a relatively common corrugated pipe with a wide range of applications. However, the polyethylene corrugated pipe commonly used in the industry has a low heat distortion temperature, poor heat resistance, and poor low temperature impact resistance. Contents of the invention [0003] The invention mainly solves the technical problems existing in the prior art, thereby providing a modified polyethylene corrugated pipe and a preparation method thereof. [0004] Above-mentioned technical problem of the present invention is mainly solved by following technical scheme: [0005] A modified polyethylene bellows, made of modified polyethylene material, the modified polyethylene material is composed of the following raw mate...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L27/18C08L23/08C08K13/02C08K5/098C08K3/04C08K3/34C08K5/1539F16L11/11
CPCC08L23/06C08L2201/02C08L2203/18C08L2205/02C08L2205/035F16L11/11C08L23/12C08L27/18C08L23/0853C08K13/02C08K5/098C08K3/04C08K3/34C08K5/1539
Inventor 姜爱荣
Owner JIANGSU CHANGFENG BELLOWS CO LTD
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