CN103254723A - Solvent-free type natural gas pipeline drag-reduction internal paint and preparation method thereof - Google Patents
Solvent-free type natural gas pipeline drag-reduction internal paint and preparation method thereof Download PDFInfo
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Abstract
The invention relates to solvent-free type natural gas pipeline drag-reduction internal paint and a preparation method thereof. The solvent-free type natural gas pipeline drag-reduction internal paint is double-component paint including a component A and a component B, wherein the component A and the component B are matched for use in a weight ratio of A:B=(3-4.5):1. The preparation method of the solvent-free type natural gas pipeline drag-reduction internal paint comprises the following steps of: ball-milling pigment and fillers to 40 microns or lower to carry out modifying treatment; drying the modified pigment and fillers for 2 hours under the condition of 120 DEG C to remove volatile impurities and physical crystal water; placing other components to a reaction kettle for mixing and stirring for one hour or more under constant temperature according to the material ratio of the component A; detecting the paint according to various detecting indexes, filtering and packaging to obtain the component A; and adding the component B for mixing and stirring to obtain the product for use. The solvent-free type natural gas pipeline drag-reduction internal paint has the advantages that the coating is free of organic solvent, so that a pinhole defect caused by solvent type paint solvent volatilization is avoided. Moreover, fire hazards caused by solvent type paint solvent volatilization are eliminated, harms of paint to body health of construction personnel are relieved, and the environment friendliness is better.
Description
[technical field]
The technical field that the present invention relates to specifically, is coating and preparation method thereof in a kind of no-solvent type natural gas line drag reduction.
[background technology]
At present, the oil gas conveying is mainly finished by large diameter pipeline, and pipe diameter is many more than 500mm, even reaches 1000mm.For the deposition of the corrosion that prevents inner-walls of duct, wax deposition, impurity and reduce fluid at the pipe interior transporting resistance, need usually be coated with last layer coating at inner-walls of duct.The present invention relates generally to and is coated with drag reduction coating in the natural gas line.
Be coated with the U.S. that starts from 50 years last century in the oil and gas pipes, originally for anticorrosion, being coated with pipeline in finding afterwards has drag reduction to increase defeated effect.U.S. Tennessee natural gas line company had carried out typical Refugio natural gas line undercoat test first in 1958, and flow efficiency improves obviously behind the test-results proof pipeline coating.After this some famous heavy calibers, length all adopt this technology apart from natural gas line in the world, thereby this technology effectively reduces the power consumption minimizing of the friction resistance compressor in the transportation and reduces cost, the corrosion that alleviates inwall guarantees the purity of medium, is convenient to safe operation and the maintenance of pipeline.The pipeline coating drag reduction technology is started late at home, up to " industrial applications first just in the West-east Gas engineering, and obtain good achievement at the beginning of 21 century.Along with planning and the construction of many Sweet natural gas projects, this technology will be gathered around and be had broad application prospects.
Current, the coating that is used for being coated with in the pipeline drag reduction mostly is solvent based coating, and solvent mostly is one or more mixing such as dimethylbenzene, propyl carbinol.Though the solvent based coating workability is better, also there are a lot of shortcomings: VOC too high levels contaminate environment, influence workmen's health, disaster hidden-trouble is arranged, and the volatilization of solvent causes also painting quality to descend.The development trend of coating is that water-borne coatings, solventless coatings and powder coating replace solvent based coating.Solventless coatings overcomes the shortcoming of solvent based coating, but also has self shortcoming: general viscosity is bigger, and workability is poor, because the less cross-linking density height of film-forming resin molecular weight, coating is more crisp.
[summary of the invention]
The objective of the invention is to overcome the deficiencies in the prior art, coating and preparation method thereof in a kind of no-solvent type natural gas line drag reduction is provided.
The objective of the invention is to be achieved through the following technical solutions:
Coating in a kind of no-solvent type natural gas line drag reduction, it is dual-component coating, comprises A component and B component, A component and B percentages of ingredients are respectively:
The raw material of A component is formed mass percent:
Thinner 14.0～22.0%;
Red iron oxide 11.0～15.0%;
PTFE powder 3.0～4.0%;
Blaue fixe 4.0～7.0%;
Glass microballon 4.0～7.0%;
Flow agent 0.4～0.8%;
Defoamer 0.5～0.9%;
Dispersion agent 0.4～1.0%;
Toughner 7.0～8.0%
The Resins, epoxy surplus
The raw material of B component is formed mass percent:
Curing catalyst 10.0～20.0%;
The polymeric amide surplus
Described A component and B component are by mass ratio A: B=3～be used at 4.5: 1.
Described Resins, epoxy is E～51 low-viscosity liquid-state epoxy resins.
Described thinner is that butylglycidyl ether and carbon 12～14 alkyl glycidyl ethers (AGE) mix use.
Described color stuffing is red iron oxide, glass microballon, the blaue fixe after the modification, and ptfe micropowder, and diameter of particle is below 40 μ m.
Described flow agent is BYK～320.
Described dispersion agent is BYK～P104S.
Described defoamer is BYK～A530, is German Bi Ke company product, and market is all available.
Described toughner is dibutyl phthalate.
Described B component solidifying agent is kymene 00#, and curing catalyst is DMP～30.
The preparation method of coating in a kind of no-solvent type natural gas line drag reduction, its concrete steps are:
(1) pigment and filling ball are ground to below the 40 μ m, carry out modification and handle, with the color stuffing drying treatment after the modification, dry 2h under 120 ℃ of conditions removes volatile impunty and physical crystal moisture;
(2) place reactor mixing constant temperature to stir more than the 1h other components by A component raw material proportioning;
(3) detect coating by every detection index, filter and package and obtain component A; Adding the mixing of B component stirs and can use.
A kind of modification color stuffing preparation method, its concrete steps are:
Adopt silane coupling agent KH-560, consumption is 0.5%～1.5% of color stuffing massfraction; The hydrolysis of silane coupling agent KH-560, coupling agent: methyl alcohol: the ratio of water is 1: 2: 0.5, before adding coupling agent, adjust pH to 3～5 with acetic acid, hydrolysis 5～10 minutes, the methyl alcohol that adds 10 times of amount of filler after hydrolysis is finished, then hydrolyzed solution is sprayed onto powder surface, powder is inserted there-necked flask, there-necked flask connects prolong, high-speed stirring in thermostat container, temperature is set in 80 ℃, stirs suction filtration after 2 hours, and filter cake is placed in the drying baker, more than 120 ℃ of dry 2h, filter cake is ground obtain the modification color stuffing then.
This preparation method's principle is as follows: silane coupling agent general structure Y (CH2) nSiX
3, wherein Y is organo-functional group, can react with organic resin.X is alkoxyl group, can be hydrolyzed into active poly-hydroxy silanol Si (OH)
3, the mortise with the hydroxyl condensation reaction of powder surface then, reactive group Y then with the organic substance reaction bonded.
Powder reuniting after the modification obviously reduces, and particle diameter is less, and the powder after the modification and film-forming resin intermiscibility also improve greatly, and good dispersion effect can be arranged in resin system.
Compared with prior art, positively effect of the present invention is:
(1) be coated with drag reduction coating in the solvent-free pipeline of the present invention, coating smooth finish is higher, and roughness is very little, can reach about 1 μ m.
(2) adopt polytetrafluoroethylene (PTFE) in the filler of the present invention, make that the contact angle of coating and water is bigger, greater than 90 °, the surface energy of giving coating is less, thereby alleviates impurity reduces fluid in adhering to of coatingsurface resistance to flow.By Owens-Wends-Rabel-Kaeble (OWRK) method of calculation, draw surface energy about 35.
(3) coating curing of the present invention is very fast, and solidify less than 24h room temperature under less than 2h 60 ℃ of condition following set times.Coating has good sticking power, and the shearing resistance of coating reaches more than the 15.2MPa, and the salt spray resistance of coating, solvent resistance are better.
(4) coating of the present invention does not contain organic solvent, the needle pore defect of avoiding the solvent based coating solvent evaporates to cause.Eliminate the disaster hidden-trouble that the solvent based coating solvent evaporates causes, alleviate the coating injury healthy to the workmen, more friendly to environment.
[description of drawings]
Fig. 1 is the modified oxidized iron oxide red sem photograph that the present invention prepares.
[embodiment]
The embodiment of coating and preparation method thereof in a kind of no-solvent type natural gas line of the present invention drag reduction below is provided.
Coating in a kind of no-solvent type natural gas line drag reduction comprises A component and B component, and the mass percent of A component and B component is respectively:
The raw material of A component is formed mass percent:
Resins, epoxy 41.0%;
Thinner 22.0%;
Ferric oxide red powder 15.0%;
PTFE powder 3.0%;
Blaue fixe 4.5%;
Glass microballon 6.0%;
Flow agent 0.4%;
Defoamer 0.4%;
Dispersion agent 0.7%;
Toughner 7.0%
The raw material of B component is formed mass percent:
Polymeric amide 80.0%;
Curing catalyst 20.0%;
The A component was mixed use with the B component by mass ratio at 4: 1 when coating used.
Wherein, the preparation method of modification color stuffing is as follows: adopt silane coupling agent KH-560 modification, consumption be color stuffing consumption 1.5%, the mass ratio of red iron oxide, blaue fixe and glass microballon is 1: 0.3: 0.4 (PTFE need not modification) in the color stuffing.Experimental procedure comprises the hydrolysis of KH-560.Coupling agent: methyl alcohol: the ratio of water is 1: 2: 0.5, before the adding coupling agent, adjusts PH to 3-5 with acetic acid, hydrolysis 10 minutes, the methyl alcohol of 10 times of amount of filler of adding was sprayed onto powder surface with hydrolyzed solution then after hydrolysis was finished, powder is inserted there-necked flask, there-necked flask connects prolong, and high-speed stirring in thermostat container, temperature are set in 80 ℃, stir suction filtration after 2 hours, and filter cake placed in the drying baker, more than 120 ℃ of dry 2h, then filter cake is ground the powder that obtains after the modification.
The preparation method of coating in a kind of no-solvent type natural gas line drag reduction: (1) is the Resins, epoxy of the mass percent 41% of 3.0% PTFE and A component with the modified pigment of preparation and filler and mass percent, the butylglycidyl ether of mass percent 22%, mass percent 0.4% flow agent, the defoamer of mass percent 0.4% and mass percent are 0.7% dispersion agent, mass percent is that 7% toughner fully mixes and stirs more than the 90min, can obtain the A component.(2) with the A component with comprise that mass percent is that 80% polyamide resin and mass percent are that the B component of 20% curing catalyst DMP-30 is mixed stirring by mass ratio at 4: 1, can obtain being coated with in the pipeline drag reduction solventless coatings.
The resultant coating of this coating, its shearing resistance is 15.2Mpa on inspection, the roughness of coating less than 1.5 μ m about.
Coating in a kind of no-solvent type natural gas line drag reduction comprises A component and B component, and the mass percent of A component and B component is respectively:
The raw material of A component is formed mass percent:
Resins, epoxy 45.5%;
Thinner 14.0%;
Ferric oxide red powder 15.0%;
PTFE powder 4.0%;
Blaue fixe 5.0%;
Glass microballon 6.5%;
Flow agent 0.75%;
Defoamer 0.5%;
Dispersion agent 0.75%;
Toughner 8.0%
The raw material of B component is formed mass percent:
Polymeric amide 85.5%;
Curing catalyst 14.5%;
The A component was mixed use with the B component by mass ratio at 3.75: 1 when coating used.
Wherein, the preparation method of modification color stuffing is as follows: adopt silane coupling agent KH-560 modification, consumption be color stuffing consumption 1.5%, the mass ratio of red iron oxide, blaue fixe and glass microballon is 3: 1: 1.3 (PTFE need not modification) in the color stuffing.Experimental procedure comprises the hydrolysis of KH-560.Coupling agent: methyl alcohol: the ratio of water is 1: 2: 0.5, before the adding coupling agent, adjusts PH to 3-5 with acetic acid, hydrolysis 10 minutes, the methyl alcohol of 10 times of amount of filler of adding was sprayed onto powder surface with hydrolyzed solution then after hydrolysis was finished, powder is inserted there-necked flask, there-necked flask connects prolong, and high-speed stirring in thermostat container, temperature are set in 80 ℃, stir suction filtration after 2 hours, and filter cake placed in the drying baker, more than 120 ℃ of dry 2h, then filter cake is ground the powder that obtains after the modification.
The preparation method of coating in a kind of no-solvent type natural gas line drag reduction: (1) is the Resins, epoxy of the mass percent 45.5% of 4.0% PTFE and A component with the modified pigment of preparation and filler and mass percent, the butylglycidyl ether of mass percent 14%, mass percent 0.75% flow agent, the defoamer of mass percent 0.5% and mass percent are 0.75% dispersion agent, mass percent is that 8% toughner fully mixes and stirs more than the 90min, can obtain the A component.(2) with the A component with comprise that mass percent is that 85.5% polyamide resin and mass percent are that the B component of 14.5% curing catalyst DMP-30 is mixed stirring by mass ratio at 3.75: 1, can obtain being coated with in the pipeline drag reduction solventless coatings.
The resultant coating of this coating, its shearing resistance is 13.4Mpa on inspection, about the roughness 1 μ m of coating.
Embodiment 3
Coating in a kind of no-solvent type natural gas line drag reduction comprises A component and B component, and the mass percent of A component and B component is respectively:
The raw material of A component is formed mass percent:
Resins, epoxy 43.5%;
Thinner 17.0%;
Ferric oxide red powder 15.0%;
PTFE powder 3.75%;
Blaue fixe 5.0%;
Glass microballon 6.0%;
Flow agent 0.75%;
Defoamer 1.0%;
Dispersion agent 0.75%;
Toughner 7.25%
The raw material of B component is formed mass percent:
Polymeric amide 89.0%;
Curing catalyst 11.0%;
The A component was mixed use with the B component by mass ratio at 4.25: 1 when coating used.
Wherein, the preparation method of modification color stuffing is as follows: adopt silane coupling agent KH-560 modification, consumption be color stuffing consumption 1.5%, the mass ratio of red iron oxide, blaue fixe and glass microballon is 3: 1: 1.2 (PTFE need not modification) in the color stuffing.Experimental procedure comprises the hydrolysis of KH-560.Coupling agent: methyl alcohol: the ratio of water is 1: 2: 0.5, before the adding coupling agent, adjusts PH to 3-5 with acetic acid, hydrolysis 10 minutes, the methyl alcohol of 10 times of amount of filler of adding was sprayed onto powder surface with hydrolyzed solution then after hydrolysis was finished, powder is inserted there-necked flask, there-necked flask connects prolong, and high-speed stirring in thermostat container, temperature are set in 80 ℃, stir suction filtration after 2 hours, and filter cake placed in the drying baker, more than 120 ℃ of dry 2h, then filter cake is ground the powder that obtains after the modification.
The preparation method of coating in a kind of no-solvent type natural gas line drag reduction: (1) is the Resins, epoxy of the mass percent 43.5% of 3.75% PTFE and A component with the modified pigment of preparation and filler and mass percent, the butylglycidyl ether of mass percent 17%, mass percent 0.75% flow agent, the defoamer of mass percent 1.0% and mass percent are 0.75% dispersion agent, mass percent is that 7.25% toughner fully mixes and stirs more than the 90min, can obtain the A component.(2) with the A component with comprise that mass percent is that 89.0% polyamide resin and mass percent are that the B component of 11.0% curing catalyst DMP-30 is mixed stirring by mass ratio at 4.25: 1, can obtain being coated with in the pipeline drag reduction solventless coatings.
The resultant coating of this coating, its shearing resistance reaches 15Mpa on inspection, and the roughness of coating is less than 1 μ m.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, without departing from the inventive concept of the premise; can also make some improvements and modifications, these improvements and modifications also should be considered within the scope of protection of the present invention.
Claims (7)
1. the interior coating of no-solvent type natural gas line drag reduction is characterized in that it is dual-component coating, comprises A component and B component, and the raw materials quality per-cent of A component and B component is respectively:
The raw material of A component is formed mass percent:
Thinner 14.0～22.0%;
Red iron oxide 11.0～15.0%;
Blaue fixe 4.0～7.0%;
Glass microballon 4.0～7.0%;
PTFE powder 3.0～4.0%;
Flow agent 0.4～0.8%;
Defoamer 0.5～0.9%;
Dispersion agent 0.4～1.0%;
Toughner 7.0～8.0%
The Resins, epoxy surplus
The raw material of B component is formed mass percent:
Curing catalyst 10.0～20.0%;
The polymeric amide surplus
Described A component and B component are by mass ratio A: B=3～be used at 4.5: 1.
2. coating in a kind of no-solvent type natural gas line drag reduction as claimed in claim 1 is characterized in that described Resins, epoxy is E～51 low-viscosity liquid-state epoxy resins.
3. coating in a kind of no-solvent type natural gas line drag reduction as claimed in claim 1 is characterized in that, described thinner is that butylglycidyl ether and carbon 12～14 alkyl glycidyl ethers (AGE) mix use.
4. coating in a kind of no-solvent type natural gas line drag reduction as claimed in claim 1 is characterized in that described red iron oxide is the red iron oxide micro mist after the modification, and diameter of particle is below 40 μ m.
5. the preparation method of coating in the no-solvent type natural gas line drag reduction is characterized in that its concrete steps are:
(1) pigment and filling ball are ground to below the 40 μ m, carry out modification and handle, with the color stuffing drying treatment after the modification, dry 2h under 120 ℃ of conditions removes volatile impunty and physical crystal moisture;
(2) place reactor mixing constant temperature to stir more than the 1h other components by A component raw material proportioning;
(3) detect coating by every detection index, filter and package and obtain component A; Adding the mixing of B component stirs and can use.
6. modification color stuffing preparation method is characterized in that its concrete steps are:
Adopt silane coupling agent KH-560, consumption is 0.5%～1.5% of color stuffing massfraction; The hydrolysis of silane coupling agent KH-560, coupling agent: methyl alcohol: the ratio of water is 1: 2: 0.5, before adding coupling agent, adjust pH to 3～5 with acetic acid, hydrolysis 5～10 minutes, the methyl alcohol that adds 10 times of amount of filler after hydrolysis is finished, then hydrolyzed solution is sprayed onto powder surface, powder is inserted there-necked flask, there-necked flask connects prolong, high-speed stirring in thermostat container, temperature is set in 80 ℃, stirs suction filtration after 2 hours, and filter cake is placed in the drying baker, more than 120 ℃ of dry 2h, filter cake is ground obtain the modification color stuffing then.
7. a kind of modification color stuffing preparation method as claimed in claim 6 is characterized in that described color stuffing is red iron oxide, glass microballon, blaue fixe, and a kind of in the ptfe micropowder.
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| CN201310180716.XA CN103254723B (en) | 2013-05-16 | 2013-05-16 | A kind of no-solvent type natural gas line drag reduction inside courtyard and preparation method thereof |
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| CN201310180716.XA CN103254723B (en) | 2013-05-16 | 2013-05-16 | A kind of no-solvent type natural gas line drag reduction inside courtyard and preparation method thereof |
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Cited By (7)
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| CN107903762A (en) * | 2017-10-31 | 2018-04-13 | 陕西恒威能源科技有限公司 | One kind is mining to adopt solvent-free inside courtyard of gas pipeline and preparation method thereof |
| CN108057594A (en) * | 2017-10-31 | 2018-05-22 | 陕西恒威能源科技有限公司 | The preparation method of high corrosion-resistant gas pipeline |
| CN108264824A (en) * | 2018-02-12 | 2018-07-10 | 石家庄市油漆厂 | Buried steel pipe outer wall airless spraying solventless epoxy coating and preparation method thereof |
| CN112011248A (en) * | 2020-08-04 | 2020-12-01 | 北京红狮科技发展有限公司 | Drag-reduction environment-friendly coating for inner wall of long-distance pipeline and preparation method thereof |
| CN114686075A (en) * | 2022-05-18 | 2022-07-01 | 哈尔滨雨阳佳泰环保新材料有限公司 | Solvent-free type natural gas pipeline internal resistance reducing coating and preparation method thereof |
| CN114854282A (en) * | 2022-05-18 | 2022-08-05 | 哈尔滨雨阳佳泰环保新材料有限公司 | Solvent-free in-pipeline drag reduction coating and preparation method thereof |
| EP4239004A1 (en) * | 2022-03-03 | 2023-09-06 | Roller Bearing Company of America, Inc. | Coating composition |
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|---|---|---|---|---|
| CN107903762A (en) * | 2017-10-31 | 2018-04-13 | 陕西恒威能源科技有限公司 | One kind is mining to adopt solvent-free inside courtyard of gas pipeline and preparation method thereof |
| CN108057594A (en) * | 2017-10-31 | 2018-05-22 | 陕西恒威能源科技有限公司 | The preparation method of high corrosion-resistant gas pipeline |
| CN108264824A (en) * | 2018-02-12 | 2018-07-10 | 石家庄市油漆厂 | Buried steel pipe outer wall airless spraying solventless epoxy coating and preparation method thereof |
| CN112011248A (en) * | 2020-08-04 | 2020-12-01 | 北京红狮科技发展有限公司 | Drag-reduction environment-friendly coating for inner wall of long-distance pipeline and preparation method thereof |
| EP4239004A1 (en) * | 2022-03-03 | 2023-09-06 | Roller Bearing Company of America, Inc. | Coating composition |
| CN114686075A (en) * | 2022-05-18 | 2022-07-01 | 哈尔滨雨阳佳泰环保新材料有限公司 | Solvent-free type natural gas pipeline internal resistance reducing coating and preparation method thereof |
| CN114854282A (en) * | 2022-05-18 | 2022-08-05 | 哈尔滨雨阳佳泰环保新材料有限公司 | Solvent-free in-pipeline drag reduction coating and preparation method thereof |
| CN114854282B (en) * | 2022-05-18 | 2023-02-07 | 哈尔滨雨阳佳泰环保新材料有限公司 | Solvent-free in-pipeline drag reduction coating and preparation method thereof |
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| CN103254723B (en) | 2015-08-19 |
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