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High-strength pressure-resistant polyethylene composite pipe and preparation method thereof

A polyethylene composite pipe and polyethylene pipe technology, applied in the field of composite pipes, can solve the problems that the sheet cannot be flattened and pressed on the core pipe, the conveying pipeline is easily damaged, and it is inconvenient to grind and extrude the sheet, so as to achieve high toughness and water absorption. Small size, good bonding effect

Active Publication Date: 2020-01-03
ANHUI JIELANTE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional steel pipes have poor corrosion resistance and are not easy to handle, so they can no longer meet the current needs
my country's main oil and natural gas are mostly distributed in deserts, swamps or mountainous areas, and the natural environment is relatively harsh. The laying of steel pipelines is seriously affected by the natural environment, and due to ground subsidence, landslides and other reasons, the pipelines are extremely prone to damage;
[0003] Patent No. CN102767652B discloses a heat-resistant polyethylene composite pipe and its preparation method; however, the pipe made of polyethylene is sensitive to chemical and mechanical effects, has poor heat aging resistance, and cannot be used in some fields; and In the prior art, during the winding process, the sheet cannot be flatly pressed on the core tube, and it is inconvenient to grind and squeeze sheets of different thicknesses

Method used

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  • High-strength pressure-resistant polyethylene composite pipe and preparation method thereof
  • High-strength pressure-resistant polyethylene composite pipe and preparation method thereof
  • High-strength pressure-resistant polyethylene composite pipe and preparation method thereof

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preparation example Construction

[0045] A method for preparing a high-strength pressure-resistant polyethylene composite pipe, comprising the following steps:

[0046] (1) In parts by weight, weigh polyethylene 190, chlorinated polyethylene 40, epoxy resin 85, dibutyltin dilaurate 9, calcium stearate 10, polyethylene wax 11, jade powder 9, barium laurate 8. Hydrocarbyl phosphoric acid 10, fluorine resin 9, glycidyl methacrylate 7, silane coupling agent 15, polyethylene terephthalate 16, phosphite antioxidant 15, nano zirconium dioxide 13 , Auxiliary masterbatch 11;

[0047] (2) After mixing the raw materials other than epoxy resin, add them to a high-speed kneader and knead for 10 minutes, the kneading temperature is 180°C, then send the raw materials into the cold mixer and stir until the temperature is 40°C before cutting;

[0048] (3) Put the raw materials obtained in step (2) into the hoppers of the core pipe polyethylene pipe screw extruder and the outer layer polyethylene pipe extruder in proportion, a...

Embodiment 2

[0058] A high-strength pressure-resistant polyethylene composite pipe, comprising a core pipe, a sheet skeleton reinforcement layer and an outer layer; a sheet skeleton reinforcement layer is arranged between the core pipe and the outer layer;

[0059] The material of the core tube and the outer layer is the same, and it is prepared from the following raw materials in parts by weight: polyethylene 180, chlorinated polyethylene 35, epoxy resin 75, dibutyltin dilaurate 8, calcium stearate 7, poly Ethylene wax 9, jade powder 7, barium laurate 6, hydrocarbyl phosphoric acid 8, fluorine resin 5, glycidyl methacrylate 6, silane coupling agent 10, polyethylene terephthalate 11, phosphite Antioxidant 13, Nano Zirconium Dioxide 11, Auxiliary Masterbatch 9;

[0060] The additive masterbatch is made of the following raw materials in parts by weight: polyamide 30, butyl naphthenate 12-14, dimethyl fumarate 7, sodium benzoate 6, ultrafine carbon black 9, tribasic o- Lead phthalate 5, nano...

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Abstract

The invention discloses a high-strength pressure-resistant polyethylene composite pipe and a preparation method thereof. The high-strength pressure-resistant polyethylene composite pipe comprises a core pipe, a thin sheet skeleton reinforcing layer and an outer surface layer; and the thin sheet skeleton reinforcing layer is arranged between the core pipe and the outer surface layer. With the tightcombination with a thin sheet, the high-strength pressure-resistant polyethylene composite pipe has good strength and toughness; the inner layer and the outer layer of the composite pipe are coated with modified polyethylene materials, so that the composite pipe has higher tensile strength, bending strength, high modulus and high impact resistance; with the arrangement of first springs, a leveling roller collides with the thin sheet in a natural state, and the thin sheet is pressed to a flat state through the gap between the leveling roller and the core pipe and wound on the core pipe; with the arrangement of a grinding mechanism, thin sheets with different thicknesses are convenient to grind, so that the thin sheets are smoother and more flat, and the bonding effect is good; and with thearrangement of a pressing mechanism, the thin sheets with different thicknesses can be conveniently squeezed to be smoother.

Description

technical field [0001] The invention relates to the technical field of composite pipes, in particular to a high-strength pressure-resistant polyethylene composite pipe and a preparation method thereof. Background technique [0002] Traditional steel pipes have poor corrosion resistance and are not easy to handle, so they can no longer meet the current needs. my country's main oil and natural gas are mostly distributed in deserts, swamps or mountainous areas, and the natural environment is relatively harsh. The laying of steel pipelines is seriously affected by the natural environment, and due to ground subsidence, landslides and other reasons, the pipelines are extremely prone to damage; [0003] Patent No. CN102767652B discloses a heat-resistant polyethylene composite pipe and its preparation method; however, the pipe made of polyethylene is sensitive to chemical and mechanical effects, has poor heat aging resistance, and cannot be used in some fields; and In the prior art...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/16B29C48/09B29C48/151B29C65/52B29C65/02B29B7/00
CPCB29B7/002B29C65/02B29C65/521B29C48/09B29C48/151F16L9/16
Inventor 刘俊峰刘文江李国庆汪进南万刚汪燕飞
Owner ANHUI JIELANTE NEW MATERIAL CO LTD
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