Production process of buried gas PE pipe

A production process and pipe technology, which is applied in the production process field of PE pipes for buried gas, can solve the problems of poor pressure resistance, wear resistance and impact resistance, uneven quality of PPR pipes, and short service life, etc., to achieve production Low cost, less waste, and longer service life

Inactive Publication Date: 2019-01-15
四川省海维塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PE pipes are poor in pressure resistance, wear resistance and impact resistance. When used as buried gas supply pipelines, they are often impacted or worn during construct

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Example 1

[0017] The production process of the PE pipe for buried gas provided in this embodiment includes the following steps:

[0018] (1) Ingredients, select 125 parts by weight of PE resin powder, 4 parts of clay nanocomposite, 8 parts of flame retardant, 3 parts of polyethylene wax, 2 parts of antistatic agent, 3 parts of low temperature resistant plasticizer and 2 parts of coupling agent, of which polyethylene oxide is used as antistatic agent, and dioctyl adipate is used as plasticizer for low temperature resistance;

[0019] (2) Dry mixing, put the PE resin powder, clay nanocomposite material, flame retardant, polyethylene wax, antistatic agent, low temperature resistant plasticizer and coupling agent selected according to the proportion into the dry mixing machine. Dry and stir, and obtain a dry mixture after stirring evenly;

[0020] (3) Extrusion: Put the dry mixture into an extruder for extrusion. The temperature of the barrel of the extruder is controlled at 170...

Example Embodiment

[0024] Example 2

[0025] This embodiment is basically the same as the embodiment 1, except that the proportion of ingredients in step (1) and the proportion of wear layer in step (5) are changed. The ingredients in step (1) are selected 115 parts by weight of PE resin powder, 2 parts of clay nanocomposite material, 4 parts of flame retardant, 2 parts of polyethylene wax, 1 part of antistatic agent, 2 parts of low temperature resistant plasticizer and 1 part of coupling agent; The wear-resistant layer in step (5) is selected from 25 parts by weight of polypropylene, 10 parts of polyethylene, 2 parts of zinc stearate, 1 part of graphene, and 3 parts of N-phenylbenzamide.

Example Embodiment

[0026] Example 3

[0027] This embodiment is basically the same as the embodiment 1, except that the proportion of ingredients in step (1) and the proportion of wear layer in step (5) are changed. The ingredients in step (1) are selected 140 parts by weight of PE resin powder, 6 parts of clay nanocomposite, 10 parts of flame retardant, 5 parts of polyethylene wax, 3 parts of antistatic agent, 5 parts of low temperature resistant plasticizer and 3 parts of coupling agent; The wear-resistant layer in step (5) is selected from 30 parts by weight of polypropylene, 15 parts of polyethylene, 5 parts of zinc stearate, 2 parts of graphene, and 6 parts of N-phenylbenzamide.

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PUM

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Abstract

The invention discloses a production process of a buried gas PE pipe, and the production process comprises the following steps: (1) compounding, to be more specific, selecting PE resin powder, a claynano composite material, a flame retardant, polyethylene wax, an antistatic agent, a low temperature resistant plasticizer and a coupling agent; (2) drying mixing, to be more specific, placing the selected raw materials in a dry mixer for drying and stirring to obtain a dry mixture; (3) extruding, to be more specific, and feeding the dry mixture into an extruder for extrusion; (4) cooling and setting, using a vacuum forming cooler to form and cool the extruded PE pipe under vacuum to obtain a PE base pipe; (5) preparing a wear-resistant layer; and (6) hot pressing, uniformly hot pressing the obtained wear-resistant layer and coating the outer surface of the prepared PE base pipe with the wear-resistant layer to obtain the finished PE pipe. The production process specification has low production cost and less waste, can ensure the quality of the produced product, can improve the impact resistance and wear resistance of the produced product, and increases the service life of the product.

Description

technical field [0001] The invention belongs to the technical field of plastic pipe production, and in particular relates to a production process of PE pipes for buried gas. Background technique [0002] Due to its unique advantages, PE pipes are widely used in building water supply, building drainage, buried drainage pipes, building heating, gas transmission and distribution, gas transmission pipes, electrical and telecommunications protection casings, industrial pipes, agricultural pipes, etc. Mainly used in urban water supply, urban gas supply and farmland irrigation. However, PE pipes are poor in pressure resistance, wear resistance and impact resistance. When used as buried gas supply pipelines, they are often impacted or worn during construction, resulting in short service life. The production process of pipes is various, and the quality of the produced PPR pipes is also uneven, which seriously affects the later use. Contents of the invention [0003] The technical...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L71/02C08L23/12C08K3/34C08K3/04C08K5/098C08K5/20
CPCC08K2201/011C08L23/06C08L23/12C08L2203/18C08L2205/025C08L2205/03C08L71/02C08K3/346C08K3/042C08K5/098C08K5/20
Inventor 宋亮才郑本祥
Owner 四川省海维塑胶有限公司
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