CN107216774B - A kind of magnetism anti-corrosion self-healing coatings and its application in the erosion of oil gas field casing tube anti-corrosive - Google Patents
A kind of magnetism anti-corrosion self-healing coatings and its application in the erosion of oil gas field casing tube anti-corrosive Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- 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
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- 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
- F16L58/16—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings the coating being in the form of a bandage
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2003/023—Silicon
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2003/0812—Aluminium
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2003/0862—Nickel
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/01—Magnetic additives
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The present invention provides a kind of magnetic anti-corrosion self-healing coatings and its application in the erosion of oil gas field casing tube anti-corrosive, the magnetism anti-corrosion self-healing coatings include floor portions, selfreparing part and facing sections, floor portions and facing sections are all made of component A and component B, wherein, component A is by 40-70 parts of film forming matter, 40-70 parts of epoxy resin, 20-50 parts of organic solvent compositions；Component B is made of 50-80 parts of polyamide, 40-60 parts of organic solvent；By 10-20 parts of magnetic microcapsules, 70-80 parts of organic solvent are formed for selfreparing part；The film forming matter is condensate of the vegetable oil after 180-200 DEG C of heating；The magnetic microcapsules are by ammonium chloride, resorcinol, urea, alloy soft magnetic particle, epoxy resin, and formalin is prepared.The coating selfreparing time is short, and filming performance is good, is applied to oil gas field casing tube anti-corrosive and loses, favorable anti-corrosion effect.
Description
Technical field
The invention belongs to technical field of anticorrosion, and in particular to a kind of magnetism anti-corrosion self-healing coatings and its in oil gas field casing
Application in anticorrosion.
Background technique
Oil gas field casing corrosion is always a problem of oil company not can avoid.It is raw that casing corrosion seriously affects oil gas field
The normal operation of production, it is serious or even oil well is caused to scrap, bring well workover and the material renewal cost of great number.Both at home and abroad always
Seeking cost-effective oil gas field casing tube anti-corrosive technology.What current each oil company generallyd use is epoxy Cold winding band and sacrifices
The aseptic technic that anode technology combines.Epoxy Cold winding band is coated on bushing outer surface, close with sleeve body bonding, can completely cut off
Corrosive medium is resistant to acid-alkali salt corrosion, while having good mechanical properties concurrently, reduces bare metal area, that is, plays physics screen
The effect of barrier.But inevitably there is pin hole in Cold winding band, and tong often occurs in construction and operation and bites
It is damaged caused by extraneous factors with stratum abrasion etc., brings hidden danger to the safe handling of casing.
Coating with self-repair function can detect in repair materials automatically without extraneous manpower intervention
By the microcapsules containing renovation agent and catalyst chemical reaction occurs for the crackle that portion generates to have the function that selfreparing.Though
So, the corrosion of casing can obviously be slowed down by coating one layer of anti-corrosion self-healing coatings in set outer tube layer.But renovation agent and catalyst
Contact there is randomness, it is longer that the time used in selfreparing occurs for existing selfreparing anticorrosive paint, and the film forming of coating
Performance is poor, receives the factors such as physical impact, temperature change in use, is easy to produce cracking and peeling, this is on certain
It increases the chance that corrosion occurs and coats the coating of this kind of selfreparing, oil gas field set in time when epoxy Cold winding band ruptures
The anti-corrosion effect of pipe is not still fine.Therefore, study a kind of selfreparing time is short, the good anti-corrosion of filming performance of coating simultaneously from
It repairs coating to have great importance, is applied to oil gas field casing tube anti-corrosive, can slow down since external influence leads to casing
The case where outer Cold winding band rupture causes casing corrosion.
Summary of the invention
In view of the drawbacks of the prior art, the present invention provides a kind of magnetic anti-corrosion self-healing coatings and its anti-in oil gas field casing
Application in corrosion, the selfreparing time of the anticorrosive paint is short, filming performance is good.
A kind of magnetism anti-corrosion self-healing coatings, including floor portions, selfreparing part and facing sections, floor portions and face
The composition of layer part is identical, is all made of component A and component B, wherein component A is made of the raw material of following parts by weight: film forming matter
40-70 parts of matter, 40-70 parts of epoxy resin, 20-50 parts of organic solvent；Component B is made of the raw material of following parts by weight: polyamide
50-80 parts, 40-60 parts of organic solvent；Selfreparing part is made of the raw material of following parts by weight: 10-20 parts of magnetic microcapsules, being had
70-80 parts of solvent；
Wherein, the film forming matter is condensate of the vegetable oil after 180-200 DEG C of heating, i.e., by vegetable oil in 180-
3-5h, the condensate of collection vessel and smoke discharging pipe inner wall are heated at 200 DEG C；The magnetic microcapsules be by ammonium chloride,
Benzenediol, urea, alloy soft magnetic particle, epoxy resin, formalin are prepared.
The epoxy resin is E51 epoxy resin.
The alloy soft magnetic particle is Fe-Ni magnetically soft alloy particle or Fe-Si-Al magnetically soft alloy particle.
It preferably, further include 3-17 parts of pigment, 5-15 parts of filler, 2-10 parts of defoaming agent in component A.
The magnetic microcapsules are to be prepared by the following method: by 1 part of ammonium chloride, 1 part of resorcinol, 10 parts of ureas,
0.1 part of alloy soft magnetic particle mixing, is added 15 parts of deionized waters, stirs, and adjusting pH is 3.5-4, epoxy resin is then added, so
30 parts of formalins are added afterwards, 3.5-4h is heated at 50-60 DEG C, after cooling, filter to get magnetic microcapsules are arrived.
The mass concentration of the formalin is 30-40%.
The pigment is titanium white, lithopone, toluidine red, iron oxide red, zinc green, phthalocyanine blue, any one in carbon black.
The filler is talcum powder, wollastonite, kaolin, barite, any one in mica powder.
The defoaming agent is in dimethyl silicone polymer, polypropylene glycerol aether or polyoxyethylene polyoxypropylene glycerin ether
Any one.
The organic solvent is acetone or ethyl acetate.
The preparation method of magnetism anti-corrosion self-healing coatings of the present invention:
(1) in facing sections and floor portions component A preparation: organic solvent is added, is added while stirring surplus
Remaining each component, when containing pigment, filler, defoaming agent in component A, pigment and filler need to cross 100 mesh by crushing and grinding
Sieve stirs 2-3h to get component A is arrived；
(2) in facing sections and floor portions component B preparation: after polyamide and organic solvent are mixed, stir 2-3h,
Obtain component B；
(3) mix: component A must separate storage with component B；The 1-2h before being applied to oil gas field casing and coating, then by group
Point A and component B is mixed and stirred for uniformly, i.e., the described magnetic anti-corrosion self-healing coatings when using preceding 1-2h, just need to by component A with
Component B mixing need to be separated both in storage and individually be stored；It is obtained in the magnetic anti-corrosion self-healing coatings after mixing
Facing sections and floor portions；
(4) preparation of selfreparing part: after magnetic microcapsules and organic solvent are mixed, 2-3h is stirred to get to reviewing one's lessons by oneself
Multiple part.
When in use, floor portions are first coated, selfreparing part is coated with, is finally coated with facing sections.
The magnetism anti-corrosion self-healing coatings are equal in oil gas field jacket exterior for the application in the erosion of oil gas field casing tube anti-corrosive
Fixed sacrificial anode evenly is then coated with the magnetic anti-corrosion self-healing coatings, after paint solidification, in oil gas field jacket exterior
Wind epoxy Cold winding band.
The step of coating magnetism anti-corrosion self-healing coatings are as follows: successively coat magnetic anti-corrosion certainly in oil gas field sleeve surface
Floor portions, selfreparing part, facing sections in reparation coating.
Advantages of the present invention:
(1) the selfreparing time of magnetic anti-corrosion self-healing coatings provided by the invention is short, repair time 10-20min, and
And the filming performance of coating is good, film forming uniformly, after film forming on casing good attachment, soda acid impregnate when non-scale, do not peel off；
(2) the magnetism anti-corrosion self-healing coatings are lost applied to oil gas field casing tube anti-corrosive, can be twined to avoid because epoxy is cold
Band puncture and cause corrosion there is a situation where favorable anti-corrosion effects.
Specific embodiment
Embodiment 1
1. a kind of magnetism anti-corrosion self-healing coatings, including floor portions, selfreparing part and facing sections, floor portions
It is identical with the composition of facing sections, all it is made of component A and component B,
Wherein, component A is made of the raw material of following parts by weight: 40 parts of film forming matter, 40 parts of E51 epoxy resin, and You Jirong
20 parts of agent；The film forming matter is condensate of the vegetable oil after 180 DEG C of heating, i.e., vegetable oil is heated 5h at 180 DEG C, is received
Collect the condensate of container and smoke discharging pipe inner wall；
Component B is made of the raw material of following parts by weight: 50 parts of polyamide, 40 parts of organic solvent；
Selfreparing part is made of the raw material of following parts by weight: 10 parts of magnetic microcapsules, 70 parts of organic solvent, wherein institute
Stating magnetic microcapsules is to be prepared by the following method: by 1 part of ammonium chloride, 1 part of resorcinol, 10 parts of ureas, 0.1 part of Fe-Ni
The mixing of magnetically soft alloy particle, is added 15 parts of deionized waters, stirs, and adjusting pH is 3.5, and E51 epoxy resin is then added, adds
The formalin that 30 parts of mass concentrations are 30% heats 4h at 50 DEG C, after cooling, filters to get magnetic microcapsules are arrived.
The organic solvent is acetone.
2. the preparation method of the magnetism anti-corrosion self-healing coatings:
(1) in facing sections and floor portions component A preparation: organic solvent is added, is added while stirring surplus
Remaining each component stirs 2h to get component A is arrived；
(2) in facing sections and floor portions component B preparation: after polyamide and organic solvent are mixed, stir 2h, i.e.,
Obtain component B；
(3) mix: component A must separate storage with component B；The 1-2h before being applied to oil gas field casing and coating, then by group
Point A and component B is mixed and stirred for uniformly, i.e., the described magnetic anti-corrosion self-healing coatings when using preceding 1-2h, just need to by component A with
Component B mixing need to be separated both in storage and individually be stored；It is obtained in the magnetic anti-corrosion self-healing coatings after mixing
Facing sections and floor portions；
(4) preparation of selfreparing part: after magnetic microcapsules and organic solvent are mixed, 2h is stirred to get selfreparing is arrived
Part.
When in use, floor portions are first coated, selfreparing part is coated with, is finally coated with facing sections.
Embodiment 2
1. a kind of magnetism anti-corrosion self-healing coatings, including floor portions, selfreparing part and facing sections, floor portions
It is identical with the composition of facing sections, all it is made of component A and component B,
Wherein, component A is made of the raw material of following parts by weight: 70 parts of film forming matter, 70 parts of E51 epoxy resin, and You Jirong
50 parts of agent；The film forming matter is condensate of the vegetable oil after 200 DEG C of heating, i.e., vegetable oil is heated 3h at 200 DEG C, is received
Collect the condensate of container and smoke discharging pipe inner wall；
Component B is made of the raw material of following parts by weight: 80 parts of polyamide, 60 parts of organic solvent；
Selfreparing part is made of the raw material of following parts by weight: 20 parts of magnetic microcapsules, 80 parts of organic solvent, wherein institute
Stating magnetic microcapsules is to be prepared by the following method: by 1 part of ammonium chloride, 1 part of resorcinol, 10 parts of ureas, 0.1 part of Fe-Si-
The mixing of Al magnetically soft alloy particle, is added 15 parts of deionized waters, stirs, and adjusting pH is 4, and E51 epoxy resin is then added, adds
The formalin that 30 parts of mass concentrations are 40% heats 3.5h at 60 DEG C, after cooling, filters to get magnetic microcapsules are arrived.
The organic solvent is ethyl acetate.
2. the preparation method of the magnetism anti-corrosion self-healing coatings: with embodiment 1.
Embodiment 3
1. a kind of magnetism anti-corrosion self-healing coatings, including floor portions, selfreparing part and facing sections, floor portions
It is identical with the composition of facing sections, all it is made of component A and component B,
Wherein, component A is made of the raw material of following parts by weight: 40 parts of film forming matter, 40 parts of E51 epoxy resin, and You Jirong
20 parts of agent, 3 parts of pigment, 5 parts of filler, 2- parts of defoaming agent；The film forming matter is condensate of the vegetable oil after 180 DEG C of heating,
Vegetable oil is heated into 5h, the condensate of collection vessel and smoke discharging pipe inner wall at 180 DEG C；
Component B is made of the raw material of following parts by weight: 50 parts of polyamide, 40 parts of organic solvent；
Selfreparing part is made of the raw material of following parts by weight: 10 parts of magnetic microcapsules, 70 parts of organic solvent, wherein institute
Stating magnetic microcapsules is to be prepared by the following method: by 1 part of ammonium chloride, 1 part of resorcinol, 10 parts of ureas, 0.1 part of Fe-Ni
The mixing of magnetically soft alloy particle, is added 15 parts of deionized waters, stirs, and adjusting pH is 3.5, and E51 epoxy resin is then added, adds
The formalin that 30 parts of mass concentrations are 30% heats 4h at 50 DEG C, after cooling, filters to get magnetic microcapsules are arrived.
The organic solvent is acetone.
The pigment is titanium white.
The filler is talcum powder.
The defoaming agent is dimethyl silicone polymer.
2. the preparation method of the magnetism anti-corrosion self-healing coatings:
(1) in facing sections and floor portions component A preparation: organic solvent is added, is added while stirring surplus
Remaining each component, wherein grind and sieve with 100 mesh sieve after pigment and filler crushing, stir 3h to get component A is arrived；
(2) in facing sections and floor portions component B preparation: after polyamide and organic solvent are mixed, stir 3h, i.e.,
Obtain component B；
(3) mix: component A must separate storage with component B；The 1-2h before being applied to oil gas field casing and coating, then by group
Point A and component B is mixed and stirred for uniformly, i.e., the described magnetic anti-corrosion self-healing coatings when using preceding 1-2h, just need to by component A with
Component B mixing need to be separated both in storage and individually be stored；It is obtained in the magnetic anti-corrosion self-healing coatings after mixing
Facing sections and floor portions；
(4) preparation of selfreparing part: after magnetic microcapsules and organic solvent are mixed, 3h is stirred to get selfreparing is arrived
Part.
Embodiment 4
1. a kind of magnetism anti-corrosion self-healing coatings, including floor portions, selfreparing part and facing sections, floor portions
It is identical with the composition of facing sections, all it is made of component A and component B,
Wherein, component A is made of the raw material of following parts by weight: 70 parts of film forming matter, 70 parts of E51 epoxy resin, and You Jirong
50 parts of agent, 17 parts of pigment, 15 parts of filler, 10 parts of defoaming agent；The film forming matter is condensation of the vegetable oil after 200 DEG C of heating
Vegetable oil is heated 3h, the condensate of collection vessel and smoke discharging pipe inner wall by object at 200 DEG C；
Component B is made of the raw material of following parts by weight: 80 parts of polyamide, 60 parts of organic solvent；
Selfreparing part is made of the raw material of following parts by weight: 20 parts of magnetic microcapsules, 80 parts of organic solvent, wherein institute
Stating magnetic microcapsules is to be prepared by the following method: by 1 part of ammonium chloride, 1 part of resorcinol, 10 parts of ureas, 0.1 part of Fe-Si-
The mixing of Al magnetically soft alloy particle, is added 15 parts of deionized waters, stirs, and adjusting pH is 4, and E51 epoxy resin is then added, adds
The formalin that 30 parts of mass concentrations are 40% heats 3.5h at 60 DEG C, after cooling, filters to get magnetic microcapsules are arrived.
The organic solvent is ethyl acetate.
The pigment is lithopone.
The filler is kaolin.
The defoaming agent is polypropylene glycerol aether.
2. the preparation method of the magnetism anti-corrosion self-healing coatings: with embodiment 3.
Embodiment 5
1. a kind of magnetism anti-corrosion self-healing coatings, including floor portions, selfreparing part and facing sections, floor portions
It is identical with the composition of facing sections, all it is made of component A and component B,
Wherein, component A is made of the raw material of following parts by weight: 55 parts of film forming matter, 55 parts of E51 epoxy resin, and You Jirong
38 parts of agent, 9 parts of pigment, 11 parts of filler, 14 parts of defoaming agent；The film forming matter is condensate of the vegetable oil after 185 DEG C of heating,
Vegetable oil is heated into 4.5h, the condensate of collection vessel and smoke discharging pipe inner wall at 185 DEG C；
Component B is made of the raw material of following parts by weight: 5 parts of polyamide 6,50 parts of organic solvent；
Selfreparing part is made of the raw material of following parts by weight: 15 parts of magnetic microcapsules, 75 parts of organic solvent, wherein institute
Stating magnetic microcapsules is to be prepared by the following method: by 1 part of ammonium chloride, 1 part of resorcinol, 10 parts of ureas, 0.1 part of Fe-Si-
The mixing of Al magnetically soft alloy particle, is added 15 parts of deionized waters, stirs, and adjusting pH is 3.7, then addition E51 epoxy resin, then plus
Enter the formalin that 30 parts of mass concentrations are 37%, 3.8h is heated at 55 DEG C, after cooling, filters to get magnetic micro- glue is arrived
Capsule.
The organic solvent is ethyl acetate.
The pigment is iron oxide red.
The filler is mica powder.
The defoaming agent is polyoxyethylene polyoxypropylene glycerin ether.
2. the preparation method of the magnetism anti-corrosion self-healing coatings: with embodiment 3.
Comparative example 1(is added without film forming matter, other are with embodiment 5)
One, detects the performance of magnetic anti-corrosion self-healing coatings
1. being coated in sleeve surface, spontaneous curing, detection is respectively by magnetic anti-corrosion self-healing coatings by way of spraying
The performance of coating, the results are shown in Table 1.
The testing result of 1 coating of table
2. the coating that each embodiment is prepared is sprayed on casing, after coating spontaneous curing, 5cm × 5cm is chosen
Region, with pocket knife sleeve surface draw twice scratch, scratch is axially parallel with casing, and scratch touches casing surface layer with pocket knife
Subject to, i.e., with pocket knife scratch when must assure that pocket knife cuts the film that coating is formed completely and form scratch, to guarantee each implementation
Scratch between example is comparable, and is observed the repair time of scratch, is shown in Table 2.
The repair time of 2 coating of table
By Tables 1 and 2 it is found that the film forming performance of paint provided by the invention is stablized, favorable anti-corrosion effect, do not crack after film forming,
It is not blistering；Moreover, the selfreparing time of coating is short when coated film ruptures, it is 10-20min, corruption can be further reduced
Erosion.
Two, application
Magnetic anti-corrosion self-healing coatings provided by the invention are used for the application in the erosion of oil gas field casing tube anti-corrosive, i.e., existing
Sacrificial anode and this aseptic technic that combines of epoxy Cold winding band in, after inlaying sacrificial anode, first using magnetic anti-corrosion from
It repairs coating and coats casing surface layer, then wind epoxy Cold winding band, it is specific as follows: equably to be fixed in oil gas field jacket exterior sacrificial
Domestic animal anode, is then coated with the magnetic anti-corrosion self-healing coatings, 1-2h before coating, first by coating component A and component B mix
It closes, successively coats floor portions in magnetic anti-corrosion self-healing coatings, selfreparing part, face when coating in oil gas field sleeve surface
Layer part winds epoxy Cold winding band in oil gas field jacket exterior after paint solidification.
Claims (10)
1. a kind of magnetism anti-corrosion self-healing coatings, including floor portions, selfreparing part and facing sections, floor portions and surface layer
Partial composition is identical, is all made of component A and component B, wherein component A is made of the raw material of following parts by weight: film forming matter
40-70 parts, 40-70 parts of epoxy resin, 20-50 parts of organic solvent；Component B is made of the raw material of following parts by weight: polyamide 50-
80 parts, 40-60 parts of organic solvent；Selfreparing part is made of the raw material of following parts by weight: 10-20 parts of magnetic microcapsules, organic
70-80 parts of solvent；
Wherein, the film forming matter is condensate of the vegetable oil after 180-200 DEG C of heating；The magnetic microcapsules are by chlorination
Ammonium, resorcinol, urea, alloy soft magnetic particle, epoxy resin, formalin are prepared.
2. magnetism anti-corrosion self-healing coatings according to claim 1, it is characterised in that: further include pigment 3-17 in component A
Part, 5-15 parts of filler, 2-10 parts of defoaming agent.
3. magnetism anti-corrosion self-healing coatings according to claim 1 or 2, it is characterised in that: the magnetic microcapsules are logical
It crosses following methods to be prepared: 1 part of ammonium chloride, 1 part of resorcinol, 10 parts of ureas, 0.1 part of alloy soft magnetic particle being mixed, are added
15 parts of deionized waters, stirring, adjusting pH are 3.5-4, and epoxy resin is then added, and 30 parts of formalins are then added, in 50-
3.5-4h is heated at 60 DEG C, after cooling, is filtered to get magnetic microcapsules are arrived.
4. magnetism anti-corrosion self-healing coatings according to claim 3, it is characterised in that: the quality of the formalin is dense
Degree is 30-40%.
5. magnetism anti-corrosion self-healing coatings according to claim 2, it is characterised in that: the pigment be titanium white, lithopone,
Toluidine red, iron oxide red, zinc green, phthalocyanine blue, any one in carbon black.
6. magnetism anti-corrosion self-healing coatings according to claim 2, it is characterised in that: the filler is talcum powder, silicon ash
Stone, kaolin, barite, any one in mica powder.
7. magnetism anti-corrosion self-healing coatings according to claim 2, it is characterised in that: the defoaming agent is poly dimethyl silicon
Any one in oxygen alkane, polypropylene glycerol aether or polyoxyethylene polyoxypropylene glycerin ether.
8. magnetism anti-corrosion self-healing coatings according to claim 1 or 2, it is characterised in that: the organic solvent is acetone
Or ethyl acetate.
9. a kind of magnetism anti-corrosion self-healing coatings are for the application in the erosion of oil gas field casing tube anti-corrosive, it is characterised in that: the application
Are as follows: sacrificial anode is equably fixed in oil gas field jacket exterior, magnetic anti-corrosion self-healing coatings are then coated with, to paint solidification
Afterwards, epoxy Cold winding band is wound in oil gas field jacket exterior, wherein the anti-corrosion self-healing coatings are using claim 1
Or magnetic anti-corrosion self-healing coatings described in 2.
10. magnetism anti-corrosion self-healing coatings according to claim 9 are for the application in the erosion of oil gas field casing tube anti-corrosive, special
Sign is: the step of the coating magnetic anti-corrosion self-healing coatings are as follows: successively oil gas field sleeve surface coat magnetic anti-corrosion from
Floor portions, selfreparing part, facing sections in reparation coating.
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| CN113045981A (en) * | 2020-07-30 | 2021-06-29 | 九天起宏(江苏)检测有限公司 | Self-repairing waterborne polyurethane coating composition and coating |
| CN115678524B (en) * | 2022-10-11 | 2023-10-10 | 中国石油天然气集团有限公司 | Casing anti-corrosion complexing agent and capsule for well cementation of oil and gas well, and preparation method and application thereof |
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