CN107559539A - Three layers of PE structural anticorrosion layers - Google Patents
Three layers of PE structural anticorrosion layers Download PDFInfo
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- CN107559539A CN107559539A CN201710906115.0A CN201710906115A CN107559539A CN 107559539 A CN107559539 A CN 107559539A CN 201710906115 A CN201710906115 A CN 201710906115A CN 107559539 A CN107559539 A CN 107559539A
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- epoxy resin
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- resin bottom
- top coat
- outsourcing
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Abstract
The invention discloses a kind of three layers of PE structural anticorrosion layers, including pipeline, epoxy resin bottom, intermediate polymer coating and outsourcing polyethylene top coat, the pipeline is respectively epoxy resin bottom, intermediate polymer coating and outsourcing polyethylene top coat from inside to outside, intermediate polymer applies the laminated surface for being bonded in epoxy resin bottom, and another side is bonded in the surface of outsourcing polyethylene top coat.The coating structure of the present invention is simple; construction is easy; with sufficient pliability; can be with bent on site; still there is maximum chemical resistance and antikathode stripping performance to have good painting membrane fluidity and dissolving viscosity in the case where thickness is relatively thin simultaneously; there is excellent barrier to moisture, to protect epoxy resin bottom and adhesive phase.
Description
Technical field
The invention belongs to coatings art, and in particular to a kind of three layers of PE structural anticorrosion layers.
Technical background
The conveying that oil, gas and water and other chemicals are carried out using pipeline is a kind of safely and effectively mode.Steel pipe must
Appropriate anti-corrosion measure must be carried out, to ensure that normal conveying and operation, the seasonal variations of spring, summer, autumn and winter cause the humidity of soil
With firmness change and WATER LEVEL CHANGES, the also complicated embedded condition such as stray electrical current and microbial action causes pipeline corruption
The complex environment of erosion.Relatively good outer anticorrosive coating should not only have a waterproof, the erosion of acid and alkali resistance, salt action and resistance to microorganism,
Should also there is not easy to crack, insulating properties height, the features such as being used in combination with cathodic protection, and it is economic and easy for construction.This
Invention is solved well using the corrosion-inhibiting coating of epoxy resin bottom, intermediate polymer coating and outsourcing polyethylene top coat composition
Determine above mentioned problem.
The content of the invention
In order to solve the above problems, it is an object of the invention to provide a kind of three layers of PE structural anticorrosion layers, mesh of the invention
Use following technical scheme realize：
A kind of three layers of PE structural anticorrosion layers, including pipeline, epoxy resin bottom, intermediate polymer coating and outsourcing polyethylene
Top coat, the pipeline from inside to outside be respectively epoxy resin bottom, intermediate polymer coating and outsourcing polyethylene top coat, institute
State intermediate polymer and apply the laminated surface for being bonded in epoxy resin bottom, another side is bonded in the table of outsourcing polyethylene top coat
Face.
Preferably, the epoxy resin bottom can be epoxy resin primer or epoxy powder, and thickness is 60~100 μm.
Preferably, the Polymer interlayers are the adhesive with branch functional group that copolymer or trimer form,
Thickness is 250~400 μm, and the coating of Polymer interlayers should follow progress after epoxy resin primer layer closely, and its interval time determines
No more than 15s.
Preferably, outsourcing polyethylene top coat can be high, medium and low isopycnic polyethylene or modified poly ethylene, can be with
Being selected according to the performance of coating and the running temperature of pipeline, thickness is 1.5~3mm, using low-density or the polyethylene of Midst density,
Adaptive temperature scope is 40~85 DEG C, and when temperature in use is high or has requirements at the higher level, the high-density polyethylene of 90 DEG C of heatproof can be selected
The modified polypropene of 110 DEG C of alkene or heatproof.
Compared with prior art, the beneficial effects of the present invention are：The coating structure is simple, and construction is easy, has sufficient
Pliability, can be with bent on site, while in the case where thickness is relatively thin still there is maximum chemical resistance and antikathode to peel off
Performance has good painting membrane fluidity and dissolving viscosity, has excellent barrier to moisture, to protect epoxy resin bottom and glue
Mixture layer, resistant to mechanical damage ability is strong, reduces and peels off, and cathodic protection current is low, and the effect of polyethylene skin is applied to be whole
Layer provides the tolerance of good shock resistance, very low water permeability and preferable temperature tolerance, in addition its ESC
Power is also fine.
Brief description of the drawings
Fig. 1 is three layers of PE structural anticorrosion Rotating fields schematic diagrames of the invention；
Embodiment
Below in conjunction with the accompanying drawings and embodiment, the present invention is described further：
As shown in figure 1, three layers of PE structural anticorrosion layers of the present invention, including pipeline 1, epoxy resin bottom 2, intermediate polymer
Coating 3 and outsourcing polyethylene top coat 4, it is characterised in that：The pipeline 1 is respectively epoxy resin bottom 2, centre from inside to outside
Polymer coating 3 and outsourcing polyethylene top coat 4, the one side of intermediate polymer coating 3 are bonded in the table of epoxy resin bottom 1
Face, another side are bonded in the surface of outsourcing polyethylene top coat 4.Epoxy resin bottom 2 has sufficient pliability, can scene
Bending, while still there is maximum chemical resistance and antikathode stripping performance to have good film in the case where thickness is relatively thin
Mobility and dissolving viscosity.Polar molecule group in intermediate polymer coating 3 can be the same as the free epoxy molecule group in subbing
Chemically react, and nonpolar molecule group easily can be combined together with polyethylene skin 4, such bottom and top layer
With regard to that can be well bonded to together, and there is good peel resistance and heat resisting water soaking performance.Polyethylene top coat 4 is to moisture
With excellent barrier, to protect epoxy resin bottom 2 and adhesive phase 3, resistant to mechanical damage ability is strong, reduces and peels off, and cloudy
Pole protective current is low, and the effect of polyethylene skin 4 is to provide good shock resistance, very low water permeability for whole coating
With preferable temperature tolerance, the tolerance of its ESC is also fine in addition.
Epoxy resin bottom 2 can be epoxy resin primer or epoxy powder, and thickness is 60~100 μm.
Polymer interlayers 3 are the adhesive with branch functional group that copolymer or trimer form, thickness for 250~
400 μm, the coating of Polymer interlayers should follow progress after epoxy resin primer layer closely, and its interval time must not exceed 15s.
Outsourcing polyethylene top coat 4 can be high, medium and low isopycnic polyethylene or modified poly ethylene, can be according to painting
The performance of material and the running temperature selection of pipeline, thickness is 1.5~3mm, using low-density or the polyethylene of Midst density, adapts to temperature
It is 40~85 DEG C to spend scope, and when temperature in use is high or has requirements at the higher level, the high density polyethylene (HDPE) or resistance to of 90 DEG C of heatproof can be selected
The modified polypropene of 110 DEG C of temperature.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, some improvement can also be made under the premise without departing from the principles of the invention, and these improvement also should be regarded as the present invention's
Protection domain.
Claims (6)
1. a kind of three layers of PE structural anticorrosion layers, including pipeline, epoxy resin bottom, intermediate polymer coating and outsourcing polyethylene table
Coating, it is characterised in that：The pipeline is respectively epoxy resin bottom, intermediate polymer coating and outsourcing polyethylene from inside to outside
Top coat, the intermediate polymer apply the laminated surface for being bonded in epoxy resin bottom, and another side is bonded in outsourcing polyethylene
The surface of top coat.
2. three layers of PE structural anticorrosion layers according to claim 1, it is characterised in that：The epoxy resin bottom can be ring
Oxygen resin primer or epoxy powder.
3. epoxy resin bottom according to claim 2, it is characterised in that：The epoxy resin bottom is as the first thickness
Spend for 60~100 μm.
4. three layers of PE structural anticorrosion layers according to claim 1, it is characterised in that：The Polymer interlayers are by being copolymerized
The adhesive with branch functional group of thing or trimer composition.
5. Polymer interlayers according to claim 4, it is characterised in that：The Polymer interlayers thickness be 250~
400μm。
6. outsourcing polyethylene top coat according to claim 5, it is characterised in that：The outsourcing polyethylene top coat thickness
For 1.5~3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710906115.0A CN107559539A (en) | 2017-09-29 | 2017-09-29 | Three layers of PE structural anticorrosion layers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710906115.0A CN107559539A (en) | 2017-09-29 | 2017-09-29 | Three layers of PE structural anticorrosion layers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107559539A true CN107559539A (en) | 2018-01-09 |
Family
ID=60984451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710906115.0A Pending CN107559539A (en) | 2017-09-29 | 2017-09-29 | Three layers of PE structural anticorrosion layers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107559539A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20110318517A1 (en) * | 2009-01-30 | 2011-12-29 | Arkema France | Adhesive composition containing grafted polyethylene |
| 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 |
-
2017
- 2017-09-29 CN CN201710906115.0A patent/CN107559539A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110318517A1 (en) * | 2009-01-30 | 2011-12-29 | Arkema France | Adhesive composition containing grafted polyethylene |
| 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)
| Title |
|---|
| 马书定等: "管线外防腐三层环氧/聚乙烯涂层系统", 《管道技术与设备》 * |
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Application publication date: 20180109 |