CN100348678C - Black polyethylene anticorrosion adhesive for buried steel pipeline - Google Patents
Black polyethylene anticorrosion adhesive for buried steel pipeline Download PDFInfo
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- CN100348678C CN100348678C CNB2006100437771A CN200610043777A CN100348678C CN 100348678 C CN100348678 C CN 100348678C CN B2006100437771 A CNB2006100437771 A CN B2006100437771A CN 200610043777 A CN200610043777 A CN 200610043777A CN 100348678 C CN100348678 C CN 100348678C
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- buried steel
- steel pipeline
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- anticorrosive material
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Abstract
The present invention discloses an outer anticorrosive material for buried steel pipelines. The utility model is composed of high-density polyethylene, ethylene-high carbon-alpha-olefine in a linear structure, anti-oxidants, light stabilizers, black carbon, silane couplers, polar monomers and peroxides. The peeling strength under 20 DEGC is larger than 150N/CM, and is larger than 100N/CM under 50 DEGC. The present invention gets rid of a middle layer of adhesives, simplifies corrosion prevention with a three-layer structure (three PE) to corrosion prevention with a two-layer structure (two PE), simplifies construction technology and lowers cost.
Description
Technical field
The present invention relates to a kind of external anticorrosive material that is used for buried steel pipeline.Specifically, relate to a kind of black polyethylene anticorrosion adhesive for buried steel pipeline.Described buried steel pipeline comprises oil and gas pipeline, petroleum pipe line, gas line, water supply pipe etc.
Background technology
Begin from the eighties of last century the eighties, occurred the buried steel pipeline anticorrosion process of three-decker in the world.So-called three-decker refers to that the first layer (innermost layer) is a sintered powder; The second layer (middle layer) is a copolymer adhesive, is divided into polyethylene glue stick and polypropylene adhesive again; The 3rd layer (outermost layer) is external anticorrosive material, and wherein the black external anticorrosive material is divided into two kinds of polyethylene external anticorrosive material and polypropylene external anticorrosive materials again, and white external anticorrosive material is generally the polypropylene external anticorrosive material.
Facts have proved that three-decker is anticorrosion to exist following defective: at first, complex process; Secondly, production cost is higher; The 3rd, in making processes because unexpected fracture appears in the middle layer tackiness agent, or because the steel pipe deflection sometimes and the mouth of pipe reason such as circle cause the tackiness agent holiday, can make between the first layer and the 3rd layer bonding badly, reduce even destroy the pipeline operating safety.
Summary of the invention
Purpose of the present invention just provides a kind of black polyethylene anticorrosion adhesive for buried steel pipeline, technical problem to be solved is: intermediate layer polyethylene adhesive layer and outer black polyethylene external anticorrosive material layer are integrated, form a kind of bonding and novel material anti-corrosion function of having simultaneously, thereby simplify complicated three-decker anticorrosion process.
Technical scheme of the present invention is as follows:
A kind of external anticorrosive material that is used for buried steel pipeline is characterized in that: it is made of following component:
The high density polyethylene(HDPE) of melting index 1～30: 60～80 parts
Linear structure ethene-high-carbon alpha-olefin: 17.5～37.5 parts
Oxidation inhibitor: 0.1～0.5 part
Photostabilizer: 0.1～0.5 part
Carbon black: 2.0～3.0 parts
Silane coupling agent: 0.2～0.4 part
Polar monomer: 1～2 part
Superoxide: 0.1～0.4 part
Described part is weight part.
Described polar monomer is preferably the derivative of unsaturated carboxylic acid or unsaturated carboxylic acid.Such as vinylformic acid or toxilic acid or maleic anhydride.
Described superoxide is preferably benzoyl peroxide or dicumyl peroxide.
The present invention has following positively effect: (1), on the basis of original three layers of impregnating material, by introducing modified with polar, material of the present invention can be reacted with epoxy group(ing), the hydroxyl in the epoxy layer, produce firm chemically crosslinked combination, thereby remove the middle layer tackiness agent, make the anticorrosion two-layer structure (two PE) that is reduced to of three-decker (three PE) anticorrosion.(2), save the forcing machine production line and the expressing technique that are used to extrude tackiness agent, and simplified coating processes, reduced production cost.(3), this material is through machine test on the impregnating plant, the stripping strength under 20 ℃ is greater than 150N/cm, the stripping strength under 50 ℃ is greater than 100N/cm.
Embodiment
Further specify the present invention below in conjunction with specific embodiment.
Embodiment one
The high density polyethylene(HDPE) of melting index 1～30: 60 parts, m
1Be melting index
Linear structure ethene-high-carbon alpha-olefin: 17.5 parts
Oxidation inhibitor: 0.1 part
Photostabilizer: 0.1 part
Carbon black: 2.0 parts
Silane coupling agent: 0.2 part
Vinylformic acid: 1 part
Benzoyl peroxide: 0.1～0.4 part
Described part is weight part.
By above-mentioned prescription batching, mix, in stirrer, stir, to extrude by extruder then, the forcing machine extrusion temperature is: 170～220 ℃, the head temperature out is 195 ℃.
Embodiment two
The high density polyethylene(HDPE) of melting index 1～30: 70 parts
Linear structure ethene-high-carbon alpha-olefin: 28 parts
Oxidation inhibitor: 0.3 part
Photostabilizer: 0.3 part
Carbon black: 2.5 parts
Silane coupling agent: 0.3 part
Maleic anhydride: 1.5 parts
Dicumyl peroxide: 0.3 part
Described part is weight part.
By above-mentioned prescription batching, mix, in stirrer, stir, to extrude by extruder then, the forcing machine extrusion temperature is: 170～220 ℃, the head temperature out is 195 ℃.
Embodiment three
The high density polyethylene(HDPE) of melting index 1～30: 80 parts
Linear structure ethene-high-carbon alpha-olefin: 37.5 parts
Oxidation inhibitor: 0.5 part
Photostabilizer: 0.5 part
Carbon black: 3.0 parts
Silane coupling agent: 0.4 part
Silane coupling agent: 0.4 part
Toxilic acid: 2 parts
Described part is weight part.
By above-mentioned prescription batching, mix, in stirrer, stir, to extrude by extruder then, the forcing machine extrusion temperature is: 170～220 ℃, the head temperature out is 195 ℃.
Claims (2)
1, a kind of external anticorrosive material that is used for buried steel pipeline, it is characterized in that: it is made of following component:
The high density polyethylene(HDPE) of melting index 1～30: 60～80 parts
Linear structure ethene-high-carbon alpha-olefin: 17.5～37.5 parts
Oxidation inhibitor: 0.1～0.5 part
Photostabilizer: 0.1～0.5 part
Carbon black: 2.0～3.0 parts
Silane coupling agent: 0.2～0.4 part
Polar monomer: 1～2 part
Superoxide: 0.1～0.4 part
Described part is weight part;
Described polar monomer is the derivative of unsaturated carboxylic acid or unsaturated carboxylic acid;
Described superoxide is benzoyl peroxide or dicumyl peroxide.
2, the external anticorrosive material that is used for buried steel pipeline as claimed in claim 1 is characterized in that: described polar monomer is vinylformic acid or toxilic acid or maleic anhydride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100437771A CN100348678C (en) | 2006-04-27 | 2006-04-27 | Black polyethylene anticorrosion adhesive for buried steel pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100437771A CN100348678C (en) | 2006-04-27 | 2006-04-27 | Black polyethylene anticorrosion adhesive for buried steel pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1844278A CN1844278A (en) | 2006-10-11 |
| CN100348678C true CN100348678C (en) | 2007-11-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100437771A Expired - Fee Related CN100348678C (en) | 2006-04-27 | 2006-04-27 | Black polyethylene anticorrosion adhesive for buried steel pipeline |
Country Status (1)
| Country | Link |
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| CN (1) | CN100348678C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643634B (en) * | 2008-08-05 | 2011-06-22 | 上海海隆赛能新材料有限公司 | Polyethylene glue nucleation melting-boosting adhesive special for oil and gas pipelines |
| CN102399519A (en) * | 2011-12-24 | 2012-04-04 | 山东东宏管业有限公司 | Hot melt adhesive for steel plastic composite pipeline and production method of hot melt adhesive |
| CN103031024A (en) * | 2012-11-22 | 2013-04-10 | 杭州五源科技实业有限公司 | Marine anticorrosive powdered paint and preparation method thereof |
| CN105295565A (en) * | 2015-12-08 | 2016-02-03 | 常熟市裕茗企业管理咨询有限公司 | Gas leakage measurement and detection device |
| CN113583327A (en) * | 2021-08-26 | 2021-11-02 | 济宁迅大管道防腐材料有限公司 | Polyethylene anticorrosive coating elbow pipe anticorrosive belt for buried steel pipeline |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2696812A1 (en) * | 1992-10-13 | 1994-04-15 | Pont A Mousson | Protection sheet for pipe element, and corresponding coated pipe element. |
| CN1132221A (en) * | 1995-03-28 | 1996-10-02 | 四川联合大学 | Wearability high density polyethylene-elastomer compsn. and its prepn. method |
| JPH08294669A (en) * | 1995-04-26 | 1996-11-12 | Nippon Steel Corp | Coated steel pipe |
| JPH10281389A (en) * | 1997-04-04 | 1998-10-23 | Nippon Steel Corp | Heavy corrosion protective covering steel pipe and heavy corrosion protective covering steel pipe pile, and its manufacture and its manufacturing device |
| CN1317529A (en) * | 2001-04-02 | 2001-10-17 | 广州市鹿山化工材料有限公司 | Adhesive for coating on steel pipe |
| CN1432617A (en) * | 2002-01-17 | 2003-07-30 | 扬子石油化工股份有限公司 | Prepn Process of polyethylene adhesive for anticorrosion of steel pipe |
| US6773774B1 (en) * | 1996-06-24 | 2004-08-10 | Fulton Enterprises | Micro-perforated polyethylene encasement |
| CN1754932A (en) * | 2004-09-30 | 2006-04-05 | 赵璐 | Polymer adhesive resin for corrosion-prevention of steel pipe and preparation process thereof |
-
2006
- 2006-04-27 CN CNB2006100437771A patent/CN100348678C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2696812A1 (en) * | 1992-10-13 | 1994-04-15 | Pont A Mousson | Protection sheet for pipe element, and corresponding coated pipe element. |
| CN1132221A (en) * | 1995-03-28 | 1996-10-02 | 四川联合大学 | Wearability high density polyethylene-elastomer compsn. and its prepn. method |
| JPH08294669A (en) * | 1995-04-26 | 1996-11-12 | Nippon Steel Corp | Coated steel pipe |
| US6773774B1 (en) * | 1996-06-24 | 2004-08-10 | Fulton Enterprises | Micro-perforated polyethylene encasement |
| JPH10281389A (en) * | 1997-04-04 | 1998-10-23 | Nippon Steel Corp | Heavy corrosion protective covering steel pipe and heavy corrosion protective covering steel pipe pile, and its manufacture and its manufacturing device |
| CN1317529A (en) * | 2001-04-02 | 2001-10-17 | 广州市鹿山化工材料有限公司 | Adhesive for coating on steel pipe |
| CN1432617A (en) * | 2002-01-17 | 2003-07-30 | 扬子石油化工股份有限公司 | Prepn Process of polyethylene adhesive for anticorrosion of steel pipe |
| CN1754932A (en) * | 2004-09-30 | 2006-04-05 | 赵璐 | Polymer adhesive resin for corrosion-prevention of steel pipe and preparation process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1844278A (en) | 2006-10-11 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20130427 |