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Flared steel strip reinforced polyethylene spiral corrugated pipe and preparation method thereof

A technology of polyethylene spiral and bellows, which is applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve problems such as chronic cracks, and achieve the effects of preventing lateral slippage, excellent mechanical strength, and excellent thermal stability

Active Publication Date: 2021-04-23
四川兰晨管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the defect that the flared steel strip reinforced polyethylene spiral corrugated pipe is prone to chronic cracks, this application provides a flared steel strip reinforced polyethylene spiral corrugated pipe and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0041] The preparation method of LCP / tetrahydrofuran acrylate copolymer fiber is:

[0042] 1) Adjust the rotation speed to 800r / min, dissolve 2.5% sodium lauryl sulfate and 1.5% OP-10 in deionized water, and add LCP emulsion and tetrahydrofuran acrylate emulsion , stirred for 30 minutes to make the emulsification uniform, and then passed nitrogen gas for 15 minutes to obtain a pre-emulsion;

[0043] 2) Adjust the rotating speed to 400r / min, stir the polyvinyl alcohol accounting for 0.15% of the total weight of the copolymer emulsion and the ammonium persulfate accounting for 0.2% of the total weight of the copolymer emulsion to raise the temperature by 70°C, and then add the pre-emulsion prepared in step 1) Add 25% into it, keep it warm for 1.5h, then adjust the speed to 150r / min, slowly add 0.3% of polyvinyl alcohol and the remaining pre-emulsion liquid dropwise in the total weight of the copolymer emulsion, raise the temperature to 80°C, keep warm and react until there is no...

preparation example 2

[0046] The preparation method of LCP / tetrahydrofuran acrylate copolymer fiber is:

[0047] 1) Adjust the rotation speed to 800r / min, dissolve 2.5% sodium lauryl sulfate and 1.5% OP-10 in deionized water, and add LCP emulsion and tetrahydrofuran acrylate emulsion , stirred for 30 minutes to make the emulsification uniform, and then passed nitrogen gas for 15 minutes to obtain a pre-emulsion;

[0048] 2) Adjust the rotating speed to 400r / min, stir the polyvinyl alcohol accounting for 0.15% of the total weight of the copolymer emulsion and the ammonium persulfate accounting for 0.2% of the total weight of the copolymer emulsion to raise the temperature by 75°C, and then add the pre-emulsion prepared in step 1) Add 30% into it, keep it warm for 2 hours, then adjust the speed to 150r / min, slowly add 0.3% of polyvinyl alcohol and the remaining pre-emulsion liquid dropwise in the total weight of the copolymer emulsion, raise the temperature to 85°C, keep warm and react until there is...

preparation example 3

[0051] The preparation method of LCP / tetrahydrofuran acrylate copolymer fiber is:

[0052] 1) Adjust the rotation speed to 800r / min, dissolve 2.5% sodium lauryl sulfate and 1.5% OP-10 in deionized water, and add LCP emulsion and tetrahydrofuran acrylate emulsion , stirred for 30 minutes to make the emulsification uniform, and then passed nitrogen gas for 15 minutes to obtain a pre-emulsion;

[0053] 2) Adjust the rotating speed to 400r / min, stir the polyvinyl alcohol accounting for 0.15% of the total weight of the copolymer emulsion and the ammonium persulfate accounting for 0.2% of the total weight of the copolymer emulsion to raise the temperature by 80°C, and then add the pre-emulsion prepared in step 1) Add 35% into it, keep it warm for 2.5 hours, then adjust the speed to 150r / min, slowly add 0.3% polyvinyl alcohol and the remaining pre-emulsion liquid dropwise, and heat up to 90°C, keep warm and react until there is no monomer reflow;

[0054] 3) Cool down to room tempe...

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PUM

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Abstract

The invention relates to the technical field of pipes, and particularly discloses a flared steel strip reinforced polyethylene spiral corrugated pipe and a preparation method thereof. The corrugated pipe comprises an inner pipe, a steel strip and an outer pipe, wherein the outer pipe and the inner pipe are prepared from the following raw materials by weight: 85-105 parts of high-density polyethylene, 25-45 parts of polyether polyurethane, 15-25 parts of maleic anhydride grafted polyethylene, 15-30 parts of filler, 5-10 parts of color master batch, 15-25 parts of a flame retardant, 4-8 parts of a dispersing agent and 2-6 parts of a coupling agent. The corrugated pipe provided by the invention has excellent tensile property and impact resistance, and has the effect of improving the defect that the flared steel strip reinforced polyethylene spiral corrugated pipe is easy to generate chronic cracks.

Description

technical field [0001] The application relates to the technical field of pipes, more specifically, it relates to a flared steel strip reinforced polyethylene spiral corrugated pipe and a preparation method thereof. Background technique [0002] Polyethylene materials are widely used in the field of water supply and drainage manufacturing due to their high strength, high temperature resistance, corrosion resistance, non-toxicity, and wear resistance. Pipes made of polyethylene materials are called polyethylene pipes, and polyethylene pipes are divided into medium-density polyethylene pipes and high-density polyethylene pipes. [0003] Flared steel belt reinforced polyethylene spiral corrugated pipe is a new type of composite pipe, mainly used as buried drainage pipe. It is a double-wall spiral corrugated pipe that uses high-density polyethylene as the matrix, and a steel strip coated with adhesive resin on the surface to form a corrugated form as the main support structure, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L75/08C08L51/06C08L51/00C08K3/04C08K7/08C08K3/24C08K3/22C08K5/21C08K13/04C08F2/26C08F2/30F16L9/14F16L57/02
CPCC08L23/06C08F2/26C08F2/30F16L9/14F16L57/02C08K2003/2224C08L2205/03C08L2205/035C08L2205/16C08L2201/08C08L2203/18C08L75/08C08L51/06C08L51/00C08K3/04C08K7/08C08K3/24C08K3/22C08K5/21C08K13/04
Inventor 赵泽旭商晓刚张舰薛世林
Owner 四川兰晨管业有限公司
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