CN101638546A - Solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying for online repairing of petroleum pipelines - Google Patents
Solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying for online repairing of petroleum pipelines Download PDFInfo
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- CN101638546A CN101638546A CN200810140801A CN200810140801A CN101638546A CN 101638546 A CN101638546 A CN 101638546A CN 200810140801 A CN200810140801 A CN 200810140801A CN 200810140801 A CN200810140801 A CN 200810140801A CN 101638546 A CN101638546 A CN 101638546A
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Abstract
The invention relates to a solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying for online repairing of petroleum pipelines, which consists of a first component coating containing a paint vehicle and a second component coating containing a curing agent, wherein the first component comprises the following materials in portion by weight: 30 to 60 portions of epoxy resin, 5 to 15 portions of glycidyl ether reactive diluent, 0.05 to 1 portion of silicone antifoaming agent, 20 to 35 portions of nano anticorrosive pigment, 7 to 25 portions of silicon dioxide mineral filler, and3 to 10 portions of pigment. The second component comprises the following materials in portion by weight: 15 to 35 portions of mannich base, 15 to 35 portions of cardanol curing agent, 3 to 10 portions of polyamide wax, and 30 to 55 portions of silicon dioxide mineral filler. The first component and the second component are dispersed evenly at a high speed and a low speed respectively, and then packaged after being filtered by an 80-mesh filter screen. The solvent-free epoxy heavy-duty anticorrosive coating can realize the automatic spraying for the online repairing, can be applied to the automatic spraying for corrosion protection of a newly-built pipework, and can also be applied to the corrosion protection of other steel structure and reinforced concrete works.
Description
Technical field
The invention belongs to chemical material technical field, relate to various pipes, harbour bridge hand hay cutter pile tube, offshore oil production and drilling unit etc. under water a kind of online petroleum pipe line of steel or hand hay cutter reinforced concrete engineering repair solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying.
Background technology
Obtained to use widely in petroleum pitch enamel and the pipeline corrosion protection in early days of epoxy coal tar pitch lacquer, but owing to contain solvent, contaminate environment, operating efficiency is low, and labour intensity is big, and is eliminated gradually.
The solvent-free epoxy coal tar heavy duty protective system that Xiamen Shuangrui Shipbuilding Paint Co., Ltd. develops according to the anticorrosion needs of divert water from the south to the north project, realized automatic spraying, the single track coat-thickness can reach not sagging of 1000 μ m, these product performance reach international like product advanced level, but viscosity is higher, only is applicable to two component high-pressure airless automatic spraying technologies of single rifle spraying.
The clinkery epoxy powder coating has good cohesive force, non-corrosibility reaches temperature tolerance preferably, and antikathode separability that it is excellent and coating shielding are used widely in China in recent years.But the clinkery epoxy powder coating need be heated to tubing when application and form coating after certain temperature is made powder smelting, need special plant produced line, japanning back steel pipe need transport the working-yard to, application to the pipe welding seam place, then can't use when coating damage or old pipeline maintenance, need to use other coating, and often influenced preservative effect because matching capacity is bad.
And the automatic spraying machine that online petroleum pipe line is repaired according to its characteristic index, requires solventless epoxy coating under the situation of 40 ℃ of temperature, and its viscosity is about 3000cps, and the 1 road application of application thickness requirement reaches 500～1000 microns, not sagging.And usually solventless epoxy coating its application thickness can only be about 200 microns when viscosity is the 3000cps left and right sides under this temperature, and require that application thickness reaches 500～1000 microns under this temperature, therefore viscosity can not be suitable for often at 6000～10000cps; Secondly online petroleum pipe line surface temperature is generally about 40 ℃, require the coating surface drying 30min under this temperature in the spraying, do solid work 1h, can backfill soil in 2 hours, and usually solventless epoxy coating surface drying and the time of doing solid work under this temperature all do not reach requirement, and it is too short to meet the requirements of coating applicable period, has only 3～4min, even cause implode, so can not be suitable for.
Summary of the invention
For addressing the above problem, the objective of the invention is to design a kind of online petroleum pipe line and repair solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying, this coating can be realized online reparation automatic spraying, also can be applicable to newly-built pipework rot-resistant automatic spraying, also can be applicable to the anticorrosion of other steel construction piece and reinforced concrete works.
For achieving the above object, the present invention adopts following technical scheme:
It is to be made of jointly first component coating that contains paint vehicle and the second component coating that contains solidifying agent that described online petroleum pipe line is repaired solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying, wherein
I, the first component coating that contains paint vehicle are as follows by the umber proportioning:
Resins, epoxy: 30～60; Glycidyl ether reactive thinner: 5～15; Silicone antifoaming agent: 0.05～1; Nano anticorrosive pigment: 20～35; Silicon-dioxide mineral stopping composition: 7～25; Pigment: 3～10;
II, the second component coating that contains solidifying agent are as follows by the umber proportioning:
Mannich base: 15～35; Cardanol solidifying agent: 15～35; Polyamide wax: 3～10; Silicon-dioxide mineral stopping composition: 30～55.
Described online petroleum pipe line is repaired solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying, its production technique that contains the first component coating of paint vehicle is 30～60 parts of extracting epoxy resins, 5～15 parts of glycidyl ether reactive thinners, silicone antifoaming agent is added in the stainless steel scuffing of cylinder bore for 0.05～1 part successively, after high speed dispersion is even, add 20～35 parts of nano anticorrosive pigment more successively, 7～25 parts of silicon-dioxide mineral stopping composition, 3～10 parts of tinting pigments, after high speed dispersion is even, grind with three-roll grinder, fineness reaches≤get final product discharging during 80 μ m, and filter the back with 80 mesh filter screens and pack and get final product.
Described online petroleum pipe line is repaired solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying, its production technique that contains the second component coating of solidifying agent is to get 15～35 parts of Mannich bases, 15～35 parts in cardanol solidifying agent, 3～10 parts of polyamide waxes, silicon-dioxide mineral stopping composition to be added to successively in the stainless steel scuffing of cylinder bore for 30～55 parts, low speed disperses 25min, ≤ 50 ℃ of temperature controls, high speed dispersion 5min again, after mixing, 80 mesh filter screens filter and package and get final product.
Described online petroleum pipe line is repaired solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying, its second component coating that contains the first component coating of paint vehicle and contain solidifying agent in use by two compression pumps of automatic spraying machine with first, in the second component coating difference suction pump, supercharging is again with first, second component coating is transported in the spray gun by two high pressure resistant sebific ducts, first, second component coating mixes rapidly in spray gun and the ejection muzzle, coating is atomized and sprays to equably and is coated with material surface, mixed coating is crosslinked film forming under chemical reaction, forms tough and hard wear resistant, strong adhesion, good impact resistance, the coating of antiseptic property excellence.
Because adopt aforesaid technical scheme, the present invention has following superiority:
One, solvent-free epoxy heavy-duty anticorrosive coating of the present invention has improved preservative property, chemical proofing and the insulativity of coating because solvent-free, pure epoxy belongs to environmentally friendly, resource-conserving coating.
Two, solvent-free epoxy heavy-duty anticorrosive coating of the present invention has improved tenacity, wear resistance and the shock resistance of coating owing to adopted mineral-filled material.
Three, solvent-free epoxy heavy-duty anticorrosive coating low viscosity of the present invention, thixotropy are strong, fast setting, working life is suitable, can with online petroleum pipe line reparation with the supporting use of automatic spraying machine, greatly improve operating efficiency, shortened construction period, reduced labour intensity, improved coating quality.
Four, solvent-free epoxy heavy-duty anticorrosive coating performance of the present invention is suitable with epoxy powder coating since the present invention can on-the-spot automatic spraying, be coated part and need not heating, save energy, facility investment are few, can satisfy the online reparation of oil and gas pipeline.
Five, need not the process line that sets up a factory, greatly reduce investment and pipeline transportation expense, operating efficiency height.
Description of drawings
Fig. 1 is first component technological process of production figure of the present invention.
Fig. 2 is second component technological process of production figure of the present invention.
Embodiment
Embodiments of the invention see the following form:
| First component coating raw material title | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Resins, epoxy | ??30 | ??40 | ??60 |
| The glycidyl ether reactive thinner | ??5 | ??12 | ??15 |
| Silicone antifoaming agent | ??0.05 | ??0.5 | ??1 |
| Nano anticorrosive pigment | ??20 | ??27 | ??35 |
| Silicon-dioxide mineral stopping composition | ??7 | ??8 | ??25 |
| Pigment | ??3 | ??9 | ??10 |
| Second component coating raw material title | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| The Mannich base solidifying agent | ??15 | ??25 | ??35 |
| The cardanol solidifying agent | ??15 | ??25 | ??35 |
| Polyamide wax | ??3 | ??7 | ??10 |
| Silicon-dioxide mineral stopping composition | ??30 | ??48 | ??55 |
Getting among the embodiment 1,2,3 corresponding part of Resins, epoxy, corresponding part of glycidyl ether reactive thinner, silicone antifoaming agent is added in the stainless steel scuffing of cylinder bore for corresponding part successively, after high speed dispersion is even, add corresponding part of nano anticorrosive pigment, corresponding part of silicon-dioxide mineral stopping composition, corresponding part of tinting pigment more successively, after high speed dispersion is even, grind with three-roll grinder, fineness reaches≤get final product discharging during 80 μ m, and filter the back with 80 mesh filter screens and pack and get final product.
Getting among the embodiment 4,5,6 corresponding part of Mannich base, corresponding part of cardanol solidifying agent, corresponding part of polyamide wax, silicon-dioxide mineral stopping composition is added in the stainless steel scuffing of cylinder bore for corresponding part successively, low speed disperses 25min, ≤ 50 ℃ of temperature controls, high speed dispersion 5min again, after mixing, 80 mesh filter screens filter and package and get final product.
The foregoing description is distinguished embodiment 1 or 2 or 3, embodiment 4 or 5 or 6 in the suction pumps by two compression pumps of automatic spraying machine in use, supercharging is transported to embodiment 1 or 2 or 3, embodiment 4 or 5 or 6 in the spray gun by two high pressure resistant sebific ducts again, in spray gun, mix rapidly and the ejection muzzle, coating is atomized and sprays to equably and is coated with material surface, mixed coating is crosslinked film forming under chemical reaction, forms the coating of tough and hard wear resistant, strong adhesion, good impact resistance, antiseptic property excellence.
By above-mentioned 6 embodiment as can be seen:
1, by adopting low-molecular-weight Resins, epoxy, reactive thinner, low viscous solidifying agent, color stuffing that the oil number low mechanical strength is high to make coating of the present invention have lower viscosity, longer at the high pressure line of carrying paint, three rifles spray simultaneously, and pressure reduces than still reaching the effect that coating fully atomizes under the serious situation.
2, for solving the thick film problem, except that select for use thixotropy strong, to the low cured class thixotropic agent of polymeric amide of coating kinematic viscosity influence, adopted simultaneously a kind of mineral powder that not only can be used as excellent stopping composition but also can play thixotropic transformation again, this mineral-filled strip has the silanol base, have hydrogen bond action, thereby formed the 3 D stereo reticulated structure, make coating play thixotropic transformation, and its surface also has electrostatic force, more strengthened the thixotroping effect between the mineral-filled material.Thereby realized that kinematic viscosity is low, thixotroping is effective, and one time the application coating thickness can reach 1000 microns not purposes of sagging.
3, adopt the Mannich base solidifying agent to realize tachy steroling.This class solidifying agent can play self-catalysis, has electronegativity on its nitrogen-atoms, belongs to nucleophilic reagent, with the Resins, epoxy react with time, attacks the lower carbon atom of cloud density of positively charged, causes the C-O bond rupture, and ring-opening polymerization takes place.This class solidifying agent also has electronegative hydroxyl, has strengthened the aggressivity to carbon atom in the oxirane ring, quickens ring-opening reaction, thereby improves solidification rate, has realized surface drying time 1h in the time of 25 ℃, does solid work time 3h; Surface drying time 0.5h in the time of 40 ℃ does solid work the performance requriements of time 1h.
4, adopt reactive thinner and the collocation of organic nitrogen(ous) base solidifying agent, guaranteeing under the quick-setting prerequisite of coating energy the working life that can under different temperature, can satisfy service requirements again with space steric effect.After general Mannich bases solidifying agent mixes in bi-component epoxy coating, be that 50-60 ℃ of condition only has 1-2min following working life,, can not satisfy the requirement of this machine automatic spraying because gel is too fast in temperature.Solventless epoxy coating of the present invention has the reactive thinner and the organic nitrogen(ous) base solidifying agent of side chain by employing, utilize its space steric effect to reduce the influence of temperature of reaction, obtained the working life that under condition of different temperatures, can satisfy the automatic spraying requirement speed of response.During 25 ℃ of working lives of product of the present invention is 35min; In the time of 40 ℃ 18min; In the time of 60 ℃ 10min.
Coating of the present invention can satisfy the desired four elements of online pipeline rehabilitation fully:
One, coating kinematic viscosity of the present invention is low, and all atomizing is good to adopt the spraying of single rifle Two-component High-pressure Airless Spraying or online reparation automatic spraying machine;
Two, paint thixotropy of the present invention is strong, and single track application thickness is at 500～1000 μ m sagging not;
Two, coating of the present invention surface drying time 0.5h in the time of 40 ℃ does solid work 1h, can carry out backfill to pipeline after doing solid work filming, and again pipeline is embedded in underground;
Four, be 35min the working life of coating of the present invention in the time of 25 ℃, is 18min in the time of 40 ℃, is 10min in the time of 60 ℃, and the working life of product is suitable, can satisfy the operational requirement of spraying machine.
Coating of the present invention possesses:
● metal there is good sticking power, with combining of reinforced concrete floor;
● anti-galvanic protection;
● coating is tough and tensile, wear-resisting;
● chemical stability is good;
● good heat resistance, can be 70 ℃ of characteristics of using continuously down.
Coating main reference technical indicator of the present invention sees the following form:
| Project | Index | Detection method |
| Film thickness, μ m | ??500～1000 | ??GB/T?1764 |
| The volume solids content, % | ??≥90 | ??ASTM?D2607 |
| Kinematic viscosity (40 ℃), cps | ??≤3500 | ??ASTM?D4287 |
| Time of drying (25 ℃), h | Do solid work≤4 | ??GB/T?1728 |
| Working life (60 ℃), min | ??≥4 | |
| Sticking power (48h, 75 ℃), level | ??1 | ??SY/T?0315 |
| Anti-10J impacts (normal temperature) | Free of pinholes | ??SY/T?0315 |
| Counter-bending (1 °, normal temperature) | Flawless | ??SY/T?0315 |
| Wear resistance (knockout method), L/ μ m | ??≥3 | ??SY/T?0315 |
| Electrical strength, MV/m | ??≥25 | ??GB/T?1408.1 |
| Volume specific resistance, Ω m | ??≥1×10 12 | ??GB/T1410 |
| Salt spray resistance (3000h) | Coating is intact | ??GB/T1771 |
| Project | Index | Detection method |
| Solidify the back shearing resistance, MPa | ??≥10 | ??SY/T?0041 |
| Cathodic disbonding (65 ℃, 48h), mm | ??≤8 | ??SY/T?0315 |
| Water tolerance (90 ℃, 30 days) | Coating do not have bubble, do not have cracking, do not have and come off | ??GB/T?1733 |
| Resistant to chemical media corrosion (10% sulfuric acid, 3% sodium-chlor, 10% sodium hydroxide, No. 2 diesel oil, normal temperature 30 days) | Coating do not have bubble, do not have cracking, do not have and come off | ??SY/T?0315 |
| Shelf lives | 12 months | ??GB/T6753.3 |
Claims (4)
1, a kind of online petroleum pipe line is repaired solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying, it is characterized in that: this solvent-free epoxy heavy-duty anticorrosive coating is to be made of jointly first component coating that contains paint vehicle and the second component coating that contains solidifying agent, wherein
I, the first component coating that contains paint vehicle are as follows by the umber proportioning:
Resins, epoxy: 30～60; Glycidyl ether reactive thinner: 5～15; Silicone antifoaming agent: 0.05～1; Nano anticorrosive pigment: 20～35; Silicon-dioxide mineral stopping composition: 7～25; Pigment: 3～10;
II, the second component coating that contains solidifying agent are as follows by the umber proportioning:
Mannich base: 15～35; Cardanol solidifying agent: 15～35; Polyamide wax: 3～10; Silicon-dioxide mineral stopping composition: 30～55.
2, repair solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying according to the described online petroleum pipe line of claim 1, it is characterized in that: the production technique that contains the first component coating of paint vehicle is 30～60 parts of extracting epoxy resins, 5～15 parts of glycidyl ether reactive thinners, silicone antifoaming agent is added in the stainless steel scuffing of cylinder bore for 0.05～1 part successively, after high speed dispersion is even, add 20～35 parts of nano anticorrosive pigment more successively, 7～25 parts of silicon-dioxide mineral stopping composition, 3～10 parts of tinting pigments, after high speed dispersion is even, grind with three-roll grinder, fineness reaches≤get final product discharging during 80 μ m, and filter the back with 80 mesh filter screens and pack and get final product.
3, repair solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying according to the described online petroleum pipe line of claim 1, it is characterized in that: the production technique that contains the second component coating of solidifying agent is to get 15～35 parts of Mannich bases, 15～35 parts in cardanol solidifying agent, 3～10 parts of polyamide waxes, silicon-dioxide mineral stopping composition to be added to successively in the stainless steel scuffing of cylinder bore for 30～55 parts, low speed disperses 25min, ≤ 50 ℃ of temperature controls, high speed dispersion 5min again, after mixing, 80 mesh filter screens filter and package and get final product.
4, repair solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying according to the described online petroleum pipe line of claim 1, it is characterized in that: the second component coating that contains the first component coating of paint vehicle and contain solidifying agent in use by two compression pumps of automatic spraying machine with first, in the second component coating difference suction pump, supercharging is again with first, second component coating is transported in the spray gun by two high pressure resistant sebific ducts, first, second component coating mixes rapidly in spray gun and the ejection muzzle, coating is atomized and sprays to equably and is coated with material surface, mixed coating is crosslinked film forming under chemical reaction, forms tough and hard wear resistant, strong adhesion, good impact resistance, the coating of antiseptic property excellence.
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| CN200810140801A CN101638546A (en) | 2008-07-28 | 2008-07-28 | Solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying for online repairing of petroleum pipelines |
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| CN200810140801A CN101638546A (en) | 2008-07-28 | 2008-07-28 | Solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying for online repairing of petroleum pipelines |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102127356A (en) * | 2010-09-28 | 2011-07-20 | 施吉承 | Formula of high-temperature insulating gel for electric heating film heating pipe |
| CN102140297A (en) * | 2011-03-23 | 2011-08-03 | 长沙普照生化科技有限公司 | Underwater solvent-free epoxy heavy sizing glass flake composite heavy-duty anticorrosive paint |
| CN102408816A (en) * | 2011-11-24 | 2012-04-11 | 厦门双瑞船舶涂料有限公司 | Epoxy ballast tank paint and preparation method thereof |
| CN102719171A (en) * | 2012-05-17 | 2012-10-10 | 厦门双瑞船舶涂料有限公司 | Solvent-free epoxy weight anticorrosion paint used for coated joints of steel buried pipeline |
| CN103319980A (en) * | 2012-03-22 | 2013-09-25 | 中国石油天然气集团公司 | High wear resistance anticorrosion coating material of crossing pipeline |
| CN103450776A (en) * | 2013-08-06 | 2013-12-18 | 信和新材料股份有限公司 | Formula of solvent-free thermal-spraying environment-friendly heavy anti-corrosion coating and preparation method of coating |
| CN104234214A (en) * | 2014-07-30 | 2014-12-24 | 汪峻峰 | Construction method for anticorrosive paint for building bars |
| CN104497496A (en) * | 2014-12-05 | 2015-04-08 | 东莞市海旭新材料技术有限公司 | Resin system applicable to spraying/hand laying-up process and preparation method of resin system |
| CN109321126A (en) * | 2018-10-17 | 2019-02-12 | 成都天合宏业科技发展有限公司 | A kind of solvent-free anticorrosive paint and preparation method thereof |
| CN110204996A (en) * | 2019-06-18 | 2019-09-06 | 上海泰梧科技有限公司 | A kind of oil pipeline high abrasion corrosion-inhibiting coating and preparation method thereof |
| CN112145864A (en) * | 2020-09-30 | 2020-12-29 | 新兴铸管股份有限公司 | Under-pressure ladle repairing technology for nodular cast iron pipe |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102127356B (en) * | 2010-09-28 | 2013-06-05 | 施吉承 | High-temperature insulating gel for electric heating film heating pipe |
| CN102127356A (en) * | 2010-09-28 | 2011-07-20 | 施吉承 | Formula of high-temperature insulating gel for electric heating film heating pipe |
| CN102140297A (en) * | 2011-03-23 | 2011-08-03 | 长沙普照生化科技有限公司 | Underwater solvent-free epoxy heavy sizing glass flake composite heavy-duty anticorrosive paint |
| CN102408816A (en) * | 2011-11-24 | 2012-04-11 | 厦门双瑞船舶涂料有限公司 | Epoxy ballast tank paint and preparation method thereof |
| CN103319980B (en) * | 2012-03-22 | 2016-02-10 | 中国石油天然气集团公司 | A kind of high abrasion protective system of crossing pipeline |
| CN103319980A (en) * | 2012-03-22 | 2013-09-25 | 中国石油天然气集团公司 | High wear resistance anticorrosion coating material of crossing pipeline |
| CN102719171A (en) * | 2012-05-17 | 2012-10-10 | 厦门双瑞船舶涂料有限公司 | Solvent-free epoxy weight anticorrosion paint used for coated joints of steel buried pipeline |
| CN102719171B (en) * | 2012-05-17 | 2014-11-19 | 厦门双瑞船舶涂料有限公司 | Solvent-free epoxy weight anticorrosion paint used for coated joints of steel buried pipeline |
| CN103450776A (en) * | 2013-08-06 | 2013-12-18 | 信和新材料股份有限公司 | Formula of solvent-free thermal-spraying environment-friendly heavy anti-corrosion coating and preparation method of coating |
| CN104234214A (en) * | 2014-07-30 | 2014-12-24 | 汪峻峰 | Construction method for anticorrosive paint for building bars |
| CN104497496A (en) * | 2014-12-05 | 2015-04-08 | 东莞市海旭新材料技术有限公司 | Resin system applicable to spraying/hand laying-up process and preparation method of resin system |
| CN109321126A (en) * | 2018-10-17 | 2019-02-12 | 成都天合宏业科技发展有限公司 | A kind of solvent-free anticorrosive paint and preparation method thereof |
| CN110204996A (en) * | 2019-06-18 | 2019-09-06 | 上海泰梧科技有限公司 | A kind of oil pipeline high abrasion corrosion-inhibiting coating and preparation method thereof |
| CN112145864A (en) * | 2020-09-30 | 2020-12-29 | 新兴铸管股份有限公司 | Under-pressure ladle repairing technology for nodular cast iron pipe |
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Open date: 20100203 |