CN110296298A - A kind of pipeline anticorrosion coating and anti-corrosion pipeline - Google Patents
A kind of pipeline anticorrosion coating and anti-corrosion pipeline Download PDFInfo
- Publication number
- CN110296298A CN110296298A CN201810247720.6A CN201810247720A CN110296298A CN 110296298 A CN110296298 A CN 110296298A CN 201810247720 A CN201810247720 A CN 201810247720A CN 110296298 A CN110296298 A CN 110296298A
- Authority
- CN
- China
- Prior art keywords
- layer
- anticorrosion coating
- pipeline
- pipeline anticorrosion
- adhesive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
Abstract
The present invention provides a kind of pipeline anticorrosion coating and anti-corrosion pipeline, wherein, pipeline anticorrosion coating is in a tubular form and for being coated on the outside of tube body, the pipeline anticorrosion coating includes inner insulating layer, semiconductive adhesive layer and external insulation layer, inner insulating layer, semiconductive adhesive layer and the external insulation layer of including is set gradually from inside to outside along the radial direction of the pipeline anticorrosion coating, the semiconductive adhesive layer is the homogeneous mixture of adhesive and semiconducting particles, the semiconductive adhesive layer and inner insulating layer and external insulation layer phase gluing.The present invention can be improved the anti-corrosion effect of pipeline, can especially resist harm of the stray electrical current to pipeline.
Description
Technical field
The present invention relates to pipeline transportation device technology more particularly to a kind of pipeline anticorrosion coatings and anti-corrosion pipeline.
Background technique
Natural gas, petroleum, water etc. generally use metallic conduit and are transported, metallic conduit in use, due to electricity
Line of force road or other reasons pass through electromagnetic field couples can form stray electrical current in the duct, and the free electron of metal inside can be in electricity
Displacement occurs for the effect of field force, makes metal cation and is electrically separated, to cause the corrosion to metallic conduit.
Therefore, in the prior art it is generally necessary to metallic conduit carry out anticorrosion process working process to form anti-corrosion pipeline,
To effectively prevent or slow down the corrosion phenomenon of pipeline in use.Existing anti-corrosion pipeline includes pipeline body and insulation
Erosion resistant coating, insulating corrosion layer are coated on the outside of pipeline body, to play the effect of the generation of limitation stray electrical current.
However, anti-corrosion pipeline in the prior art, all due to insulating corrosion layer and pipeline body surface and soil contact
Unevenly, therefore insulation performance is affected, thunder and lightning cannot be resisted or power grid enters Ground shock waves electric current, be easy to cause and puncture and insulating
Micropore is formed on erosion resistant coating, the micropore on insulating corrosion layer will lead to stray electrical current concentration, lead to the electricity of pipeline body centrality
Corrosion, influences anti-corrosion effect.
Summary of the invention
The present invention provides a kind of pipeline anticorrosion coating and anti-corrosion pipeline, to improve anti-corrosion effect.
One aspect of the present invention provides a kind of pipeline anticorrosion coating, and the pipeline anticorrosion coating is in a tubular form and for being coated on outside tube body
Side, the pipeline anticorrosion coating include inner insulating layer, semiconductive adhesive layer and external insulation layer, and described to include inner insulating layer, semiconductive viscous
Knot layer and external insulation layer are set gradually from inside to outside along the radial direction of the pipeline anticorrosion coating, and the semiconductive adhesive layer is adhesive
With the homogeneous mixture of semiconducting particles, the semiconductive adhesive layer and inner insulating layer and external insulation layer phase gluing.
Anti-corrosion pipe channel layer of the present invention, in semiconductive adhesive layer, it is preferable that the volume of semiconducting particles and adhesive
Ratio is that 1:20~1:5 can be improved the effect of uniform electric field under this ratio.The semiconducting particles can lead to adhesive
It crosses the modes such as ultrasound uniformly to mix, the present invention does not do specifically limited.
Anti-corrosion pipe channel layer of the present invention, it is preferable that semiconducting particles are selected from silicon carbide, titanium oxide, zinc oxide, oxidation
Tin, zirconium oxide, strontium titanates, silica, indium oxide, zinc sulphide, cadmium selenide, gallium phosphide, cadmium telluride, selenizing molybdenum, tungsten selenide, oxidation
One of niobium, tungsten oxide, potassium tantalate, cadmium sulfide, carbon fiber, carbon nanotube.
Carbon nanotube of the present invention is all semiconductive carbon nano tube.
Preferably, the semiconducting particles in silicon carbide, titanium oxide, zinc oxide, carbon fiber, carbon nanotube one
Kind.It is conducive to improve the effect of semiconductive adhesive layer uniform electric field as a result, to further increase the anti-corrosion effect for tube body.
Further, applicant is had found by numerous studies, when the semiconducting particles are carbon fiber or carbon nanotube
When, the anti-corrosion effect for tube body, and the characteristic that carbon nanotube is small with high temperature resistant and thermal expansion coefficient can be further increased,
It is more suitable for the application environment of anti-corrosion pipeline.Wherein, carbon nanotube can be realized by the method that grinding distribution and ultrasonic wave disperse
Uniformly it is scattered in medium viscosity medium.
The diameter of the more preferable carbon nanotube is between 0.8nm-7.0nm, using 1.0nm-3.0nm as optimum.
Anti-corrosion pipe channel layer of the present invention, adhesive are copolymer adhesive.Due to the active group of copolymer adhesive
Group can chemically react with the epoxy group of External fusion bonded epoxy coating and generate hydrogen bond or chemical bond, make semiconductive adhesive layer and it is interior absolutely
Edge layer forms good bonding, and ensure that pipeline anticorrosion coating at relatively high temperatures has good caking property.
Further, the copolymer adhesive is ethylenic copolymer adhesive.Ethylene copolymer adhesive as a result,
In the polyethylene of nonpolar ethylene moiety and external insulation layer have affinity interaction, there is semiconductive adhesive layer and external insulation layer
Excellent adhesive property.
As the preferred embodiment of semiconductive adhesive layer, the semiconductive adhesive layer is semiconducting particles and copolymer adhesive
According to the homogeneous mixture of the volume ratio of 1:20~1:5, the semiconducting particles are selected from silicon carbide, titanium oxide, zinc oxide, carbon and receive
One of mitron, preferably carbon nanotube.
Anti-corrosion pipe channel layer of the present invention, it is preferable that inner insulating layer is External fusion bonded epoxy coating.It is processing as a result,
When, clinkery epoxy powder can be coated in tube body in appearance, so that inner insulating layer is capable of forming the film of uniformly continuous, ensure that
The tightness that inner insulating layer is connect with tube body.
Anti-corrosion pipe channel layer of the present invention, it is preferable that external insulation layer is polythene material layer.Thus enable external insulation layer
Enough play better mechanical protection and anticorrosion ability.
Anti-corrosion pipe channel layer of the present invention, the preferably described external insulation layer with a thickness of 1.0-3.2mm, semiconductive adhesive layer
With a thickness of 150 μm of -1.5mm.More preferably entirety anti-corrosion pipe channel layer with a thickness of 2.2mm-4.5mm.
As a preferred solution of the present invention, in the anti-corrosion pipe channel layer, the inner insulating layer is External fusion bonded epoxy coating,
The semiconductive adhesive layer be carbon nanotube and ethylenic copolymer adhesive homogeneous mixture (volume ratio is 1:20~1:
5), the external insulation layer is polythene material layer.The effect of anti-corrosion pipe channel layer at this time is preferable.
Another aspect of the present invention provides a kind of anti-corrosion pipeline, including tube body and pipeline anticorrosion coating provided by the present invention, institute
Pipeline anticorrosion coating is stated to be coated on the outside of the pipeline.
Based on above-mentioned, a kind of pipeline anticorrosion coating provided by the invention can be coated on the outside of tube body when in use, due to half
Conductive adhesion layer be adhesive and semiconducting particles homogeneous mixture, therefore have semiconductive physical property and can with it is interior
Insulating layer and the close gluing of external insulation layer, when occurring stray electrical current around tube body, semiconductive adhesive layer can uniform electric field and energy
The potential difference as caused by stray electrical current is prevented, enters Ground shock waves electric current so as to resist thunder and lightning or power grid, does not easily cause breakdown, from
And can avoid damaging due to concentration of the stray electrical current to pipeline anticorrosion coating certain point, in addition, inner insulating layer and external insulation layer can
The generation of passive limitation stray electrical current and double of conductive adhesion layer formation protection, improve the anti-corrosion effect for tube body as a result,.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of anti-corrosion pipeline provided in an embodiment of the present invention.
In figure:
101: pipeline anticorrosion coating；102: tube body；103: inner insulating layer；
104: semiconductive adhesive layer；105: external insulation layer.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Embodiment 1
Referring to FIG. 1, the embodiment of the present invention provides a kind of pipeline anticorrosion coating 101, the pipeline anticorrosion coating 101 is in a tubular form simultaneously
For being coated on the outside of tube body 102, the pipeline anticorrosion coating 101 include inner insulating layer 103, semiconductive adhesive layer 104 and it is outer absolutely
Edge layer 105, inner insulating layer 103, semiconductive adhesive layer 104 and the external insulation layer 105 of including is along the diameter of the pipeline anticorrosion coating 101
To setting gradually from inside to outside, the semiconductive adhesive layer 104 is the homogeneous mixture of adhesive and semiconducting particles, described half
Conductive adhesion layer 104 and 105 phase gluing of inner insulating layer 103 and external insulation layer.
Specifically, inner insulating layer is External fusion bonded epoxy coating, and semiconductive adhesive layer is carbon nanotube and vinyl copolymer
The homogeneous mixture of object adhesive, the two volume ratio are 1:10, and external insulation layer is polythene material layer；
Inner insulating layer with a thickness of 0.4mm, semiconductive adhesive layer with a thickness of 0.5mm, external insulation layer with a thickness of 2.5mm.
Embodiment 2
The present embodiment provides a kind of anti-corrosion pipe channel layer, the difference with embodiment 1 is only that:
Inner insulating layer is External fusion bonded epoxy coating, and semiconductive adhesive layer is ethylenic copolymer adhesive and titanium oxide
Homogeneous mixture (volume ratio 8:1), external insulation layer are polythene material layer.Inner insulating layer is with a thickness of 0.5mm, semiconductive bonding
Layer with a thickness of 0.4mm, external insulation layer with a thickness of 3.0mm.
Although above having used general explanation, specific embodiment and test, the present invention is made to retouch in detail
It states, but on the basis of the present invention, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed
Range.
Claims (10)
1. a kind of pipeline anticorrosion coating, which is characterized in that the pipeline anticorrosion coating is interior exhausted including radially setting gradually from inside to outside
Edge layer, semiconductive adhesive layer and external insulation layer, the semiconductive adhesive layer by adhesive and semiconducting particles homogeneous mixture
It is formed.
2. pipeline anticorrosion coating according to claim 1, which is characterized in that the semiconducting particles are selected from silicon carbide, oxidation
Titanium, zinc oxide, tin oxide, zirconium oxide, strontium titanates, silica, indium oxide, zinc sulphide, cadmium selenide, gallium phosphide, cadmium telluride, selenizing
One of molybdenum, tungsten selenide, niobium oxide, tungsten oxide, potassium tantalate, cadmium sulfide, carbon fiber, carbon nanotube.
3. pipeline anticorrosion coating according to claim 2, which is characterized in that the semiconducting particles are carbon fiber or carbon nanometer
Pipe；
It is preferred that the diameter of the carbon nanotube is 1-2nm.
4. pipeline anticorrosion coating according to claim 1-3, which is characterized in that the inner insulating layer is fusion bonded epoxy
Powder coating.
5. pipeline anticorrosion coating according to claim 1-4, which is characterized in that the adhesive is copolymer gluing
Agent.
6. pipeline anticorrosion coating according to claim 1-5, which is characterized in that the external insulation layer is polyethylene material
The bed of material.
7. pipeline anticorrosion coating according to claim 5 or 6, which is characterized in that the copolymer adhesive is total for vinyl
Polymers adhesive.
8. pipeline anticorrosion coating according to claim 1, which is characterized in that the inner insulating layer is clinkery epoxy powder painting
Layer, the semiconductive adhesive layer are the homogeneous mixture of ethylenic copolymer adhesive and carbon nanotube, and the external insulation layer is
Polythene material layer, the semiconductive adhesive layer and inner insulating layer and external insulation layer phase gluing.
9. according to pipeline anticorrosion coating according to claim 1-8, which is characterized in that the thickness of the external insulation layer
For 1.0-3.2mm, semiconductive adhesive layer with a thickness of 150 μm of -1.5mm；It is preferred that anti-corrosion pipe channel layer with a thickness of 2.2mm-
4.5mm。
10. a kind of anti-corrosion pipeline, which is characterized in that described including any pipeline anticorrosion coating of tube body and claim 1-9
Pipeline anticorrosion coating is coated on the outside of the tube body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810247720.6A CN110296298A (en) | 2018-03-23 | 2018-03-23 | A kind of pipeline anticorrosion coating and anti-corrosion pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810247720.6A CN110296298A (en) | 2018-03-23 | 2018-03-23 | A kind of pipeline anticorrosion coating and anti-corrosion pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110296298A true CN110296298A (en) | 2019-10-01 |
Family
ID=68026186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810247720.6A Pending CN110296298A (en) | 2018-03-23 | 2018-03-23 | A kind of pipeline anticorrosion coating and anti-corrosion pipeline |
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| Country | Link |
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| CN (1) | CN110296298A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022174406A1 (en) * | 2021-02-20 | 2022-08-25 | 青岛科技大学 | Breakdown-resistant high-voltage cable |
Citations (5)
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|---|---|---|---|---|
| CN1693392A (en) * | 2004-05-09 | 2005-11-09 | 中国科学院成都有机化学有限公司 | Electrostatic conducting corrosion-proof coating and preparation process thereof |
| JP2007042355A (en) * | 2005-08-02 | 2007-02-15 | Totoku Electric Co Ltd | Composite coated copper wire and composite coated enamel copper wire |
| CN101283027A (en) * | 2005-08-08 | 2008-10-08 | 卡伯特公司 | Polymeric compositions containing nanotubes |
| CN102107176A (en) * | 2010-09-02 | 2011-06-29 | 中油管道防腐工程有限责任公司 | Coating process for pipeline three-layer structural anticorrosive coating |
| CN103383025A (en) * | 2012-05-02 | 2013-11-06 | 河北天脉管道工程有限公司 | Novel 3 PE outer antiseptic pipe |
-
2018
- 2018-03-23 CN CN201810247720.6A patent/CN110296298A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693392A (en) * | 2004-05-09 | 2005-11-09 | 中国科学院成都有机化学有限公司 | Electrostatic conducting corrosion-proof coating and preparation process thereof |
| JP2007042355A (en) * | 2005-08-02 | 2007-02-15 | Totoku Electric Co Ltd | Composite coated copper wire and composite coated enamel copper wire |
| CN101283027A (en) * | 2005-08-08 | 2008-10-08 | 卡伯特公司 | Polymeric compositions containing nanotubes |
| CN102107176A (en) * | 2010-09-02 | 2011-06-29 | 中油管道防腐工程有限责任公司 | Coating process for pipeline three-layer structural anticorrosive coating |
| CN103383025A (en) * | 2012-05-02 | 2013-11-06 | 河北天脉管道工程有限公司 | Novel 3 PE outer antiseptic pipe |
Non-Patent Citations (1)
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| 王浩伟: "《环境控制工程材料》", 31 January 2017, 上海交通大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022174406A1 (en) * | 2021-02-20 | 2022-08-25 | 青岛科技大学 | Breakdown-resistant high-voltage cable |
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