Polyethylene glue nucleation melting-boosting adhesive special for oil and gas pipelines

A technology for oil and gas pipelines and polyethylene, applied in the direction of adhesives, grafted polymer adhesives, adhesive types, etc., can solve the problems of mechanical strength and tensile properties, insufficient anti-corrosion function, and impact on anti-corrosion performance, etc., to achieve High mechanical strength and thermal stability, prevention of insufficient mechanical properties, and excellent mechanical properties

Inactive Publication Date: 2010-02-10
SHANGHAI HILONG SHINE NEW MATERIAL +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the patent simplifies the preparation process and saves the manufacturing cost, the anti-corrosion function of polyethylene in the complex corrosion of buried pipelines is still insufficient
[0005] In addition, Chinese Patent Application No. 200610122005.7 discloses a composite wrapping tape for anticorrosion of the outer layer of steel pipes and its production method and usage method. Derusting heating and spraying fusion-bonded epoxy powder on the steel straight pipe, forming a uniform anti-corrosion layer after cooling; this process technology configuration has good anti-aging, anti-corrosion, durability, weather resistance, peeling resistance and other aspects. However, this kind of

Method used

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  • Polyethylene glue nucleation melting-boosting adhesive special for oil and gas pipelines
  • Polyethylene glue nucleation melting-boosting adhesive special for oil and gas pipelines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Raw material ratio:

[0042] Raw material: polyethylene, white granular chips, molecular weight 60000-70000g / mol

[0043] Reaction monomer: maleic anhydride, content≥99%, melting point, 51-54℃

[0044] Initiator: Dibenzoyl peroxide

[0045]Nucleating agent: 1,3,2,4-bis(3-methyl4-benzyl)sorbitol

[0046] Antioxidant: main antioxidant 1010, auxiliary antioxidant 618; carbon black

[0047] Raw material ratio: polyethylene 68%, reaction monomer 10%, initiator 0.5%, nucleating agent 1%, carbon black 20%, antioxidant 0.5% (all are mass percentages, of which the main antioxidant is 0.4%, Co-antioxidant 0.1%).

[0048] (2) Preparation method:

[0049] A preparation method of a film made from a polyethylene glue nucleating and melting adhesive specially used for oil and gas pipelines:

[0050] Mix the polyethylene, reaction monomer, initiator and antioxidant evenly and feed them into the twin-screw extruder. Control the rotational speed of the screw extruder to make th...

Embodiment 2

[0057] (1) Raw material ratio:

[0058] Except for polyethylene 63%, maleic anhydride 15%, and dicumyl peroxide 0.5%, the composition of other raw materials is the same as that of Example 1, and the properties of the obtained polyethylene jacket material film are shown in Table 1.

[0059] (2) Preparation method:

[0060] The preparation method is the same as in Example 1.

Embodiment 3

[0062] (1) Raw material ratio:

[0063] Except that the reaction monomer uses dibutyl maleate, the initiator is di-tert-butane peroxide, and other raw material compositions are the same as those in Example 1. The properties of the obtained polyethylene jacket material film are shown in Table 1.

[0064] (2) Preparation method:

[0065] The preparation method is the same as in Example 1.

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Abstract

The invention discloses a polyethylene glue nucleation melting-boosting adhesive special for oil and gas pipelines. The adhesive comprises the following raw materials in percentage by mass: 60 to 80 percent of polyethylene, 5 to 20 percent of reaction monomer, 0.1 to 1 percent of initiator, 0.5 to 5 percent of nucleating agent, 0.1 to 2 percent of anti-oxidant, and 5 to 25 percent of carbon black,wherein the reaction monomer may be one or more of maleic anhydride, dibutyl maleate or derivatives of acrylamide; the initiator may be one of dibenzoyl peroxide, dicumyl peroxide, ditert-butyl peroxide, tert-butyl hydroperoxide or cumene hydroperoxide; the nucleating agent is selected from benzyl sorbitol derivative series nucleating agent or phosphate salt derivative series nucleating agent; and the anti-oxidant is the main anti-oxidant 1010 and the auxiliary anti-oxidant 618. The adhesive has the advantages of excellent mechanical property, wear-resisting property and thermal property andwide application.

Description

【Technical field】 [0001] The invention relates to the field of adhesives, in particular to a nucleating and melting adhesive of polyethylene glue for oil and gas pipelines. 【Background technique】 [0002] The research on multi-layer anti-corrosion materials and processes for external anti-corrosion of metal pipes can be traced back to the 1980s. In 1980, Samour et al in their patent USP 4,213,486 clarified a multi-layer corrosion protection process for the outer surface of metal pipes. According to its patent, it can be found that the technical feature at that time is a two-layer anti-corrosion structure. The inner layer is the sintered epoxy powder resin hot-applied on the outer surface of the metal pipe, and the outer layer is the polyolefin layer that is bonded / wrapped on the surface of the sintered epoxy powder resin. Oxygen powder resin provides the first anti-corrosion function of the polyethylene tape, and the other part is the adhesive that provides adhesion betwee...

Claims

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Application Information

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IPC IPC(8): C09J151/06
Inventor 孙健李明郭贵全丁武斌翁仁秀粟鹰陈建军
Owner SHANGHAI HILONG SHINE NEW MATERIAL
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