CN102719171A - Solvent-free epoxy weight anticorrosion paint used for coated joints of steel buried pipeline - Google Patents
Solvent-free epoxy weight anticorrosion paint used for coated joints of steel buried pipeline Download PDFInfo
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Abstract
The invention introduces a solvent-free epoxy weight anticorrosion paint used for coated joints of a steel buried pipeline, which comprises a component A and a component B; wherein the mass percentage of each raw material in the component A comprises: 30-45% of epoxy resin, 5-15% of glycidyl ether active diluent, 0.05%-1% of silicone defoamer, 20-35% of compound anti-rust pigment, 3-10% of other pigments, 5-15% of barium sulfate mineral filler, 10-20% of other mineral fillers and 0.3-1.5% of polyamide wax; the mass part of each raw material in the component B comprises: 10-25 parts of polyamide curing agent, 5-15 parts of Mannich base and 0.5%-2 parts of curing accelerator; and the mass ratio of the component A to the component B is 100 to 15-35. The paint provided by the present invention has the advantages of pure epoxy, environmental friendly performance and saved resource due to solvent-free property; and is capable of raising the anti-corrosive property, chemical resistance property and insulating property; and is capable of raising the toughness resistance, wear resistance and impact resistance of the coating by employing the mineral fillers.
Description
Technical field
The present invention relates to a kind of protective system, particularly a kind of steel buried ground joint coating on pipeline is used solvent-free epoxy heavy-duty anticorrosive coating.
Background technology
At present the anticorrosion coat that uses of steel buried pipeline mainly contains: petroleum pitch, coal-tar enamel, epoxide coal bituminous, clinkery epoxy powder coating (FBE), extruded polyethylene, polyethylene tape and compound coat (containing 3PE).Obtained to use widely in petroleum pitch enamel, epoxy coal tar pitch lacquer and the pipeline corrosion protection in early days of glasscloth compound coating thereof, but owing to contain solvent, contaminate environment, operating efficiency is low, and labour intensity is big, and is eliminated gradually.Good, the anti-physical shock of strong, the anti-various environmental corrosions of fusion bonded epoxy resin coating and steel pipe cohesive force is high, but water tolerance and water-fast vapour perviousness are relatively poor, are not suitable for wet area.For overcoming above-mentioned shortcoming, developed three layers of PE structure, this is that a kind of antikathode with epoxy resin is peeled off the composite structure that cohesiveness combines with poly resistance to impact shock.Yet poly ageing-resistant performance and resisting environmental stress and cracking are still without the check of life-time service; In case the Vilaterm outer cover is aging or Cracking Failure; The epoxy resin that internal layer is very thin just is difficult to reach the preservative activity of equivalence; It is higher to add price, so it only is adapted at adopting under the special geologic condition.
Pitch composite glass fiber cloth coating, fusion bonded epoxy resin coating and 3PE supercoat all are to accomplish application in factory.After the on-the-spot installation welding, need carry out corrosionproof protection repaired mouth mode commonly used after the repaired mouth region surface is handled has petroleum pitch repaired mouth, adhesive tape repaired mouth, powder epoxy repaired mouth, PE pyrocondensation repaired mouth and non-solvent epoxy anticorrosion coat repaired mouth.The petroleum pitch price is low, raw material is extensive, but labor condition is poor, and quality cannot say for sure to demonstrate,prove, and environmental pollution is serious.Epoxide coal bituminous, simple to operate, but tectum is long set time, affected by environment big, be not suitable for field work, be difficult to construction below 10 °, contaminate environment; Cold winding band is anticorrosion, and is simple to operate, but cohesive force is poor, and water-repellancy is poor, and intensity is low, affected by environment big; The powder epoxy coat adopts the electrostatic spraying mode, welds with same material rot-resistant body, and cohesive force is strong; But water-repellancy poor (water-intake rate is high, 0.83%) is brought difficulty to cathodic Protection Design, and on-the-spot utensil requires high; Need pyroprocessing, operation easier is big, and quality is wayward; The 3PE material contracting with heat, stopping property is strong, and physical strength is high, and water-repellancy is strong, and steady quality is free from environmental pollution, but needs hot melt to handle easy construction, and poor for applicability, cost is high.
Its coated substance structure of solvent-free epoxy heavy-duty anticorrosive coating and epoxide powder coating is close, and performance is similar, and metal is had good sticking power; Anti-cathodic disbonding property is excellent, and coating is tough and tensile, wear-resisting, and resistant to chemical media corrodibility is excellent; And improved water tolerance greatly, can brush, blade coating and roller application, it is convenient to construct; The processing of need not heating greatly facilitates the joint coating on pipeline construction; Characteristics such as it is low that the while solvent-free epoxy heavy-duty anticorrosive coating possesses cost, and construction requirement is low have very high cost performance.Solvent-free epoxy heavy-duty anticorrosive coating and surface treated petroleum pitch coating, powdered epoxy coating and PE compound coating are supporting to be adhered to well, can be applicable to the preventing corrosion of repaired mouth of steel buried pipeline.
Patent CN200986082Y discloses the anticorrosion take-up strap of a kind of compound crosslinked polyethylene, has tensile strength height, hardness height, resisting environmental stress and cracking, heatproof, favorable anti-corrosion effect.
Patent CN200610016979.7 discloses the aseptic technic of a kind of non-solvent epoxy tackiness agent and glass reinforced plastic composite bed; Provide fiber glass epoxy anticorrosion scheme; But construction technology is complicated, needs 3 ~ 5 layers of blade coating sizing agents, twines 2 ~ 3 layers of glasscloths, wastes time and energy, cost is high.
Patent CN101033335 discloses a kind of polyurea elastic body pipeline anti-rot protection material, and fast setting does not receive the influence of envrionment temperature, humidity, characteristics such as intensity is good, elongation is high, snappiness is good, wear resistance is high, ageing-resistant, protection against corrosion.Be specially adapted to use under the aseptic conditions such as cross-over pipe and direct-buried pipe, municipal wastewater pipe, petroleum pipe line, gas line and all kinds of steel chemical storage tanks, but need specific equipment, construction requirement is high.
Patent CN1309015 discloses a kind of anti-corrosion pipeline coating production, and this method has been accomplished steps such as the rust cleaning, priming, drying, gluing, tape wrap, oven dry of pipeline through flow production line, prepare epoxide coal bituminous anti-corrosion pipeline; The present invention not only is suitable for epoxide coal bituminous band, also is suitable for the formed strip of other material, has simplified preparation technology; Boost productivity; Shorten the production cycle, and the even free of pinholes generation of coat-thickness, bonding force is strong; Anticorrosive quality is good, is applicable to the production of large batch of mechanize industryization.
The patent that our company has applied for " online petroleum pipe line reparation solvent-free epoxy heavy-duty anticorrosive coating for automatic spraying "; Patent No. CN101638546; A kind of solvent-free epoxy heavy-duty anticorrosive coating of on-line automaticization of oil pipeline spraying usefulness is disclosed; Antiseptic property satisfies the requirement of SY/T 0315, and anticorrosive construction efficient is high, can be used for the online reparation and the newly-built pipeline corrosion protection of oil pipeline.
Anticorrosion coating on pipeline application when factory's tubulation, the on-the-spot installation when welding assembly unit need be carried out corrosionproof protection to the repaired mouth zone, and repaired mouth mode commonly used at present comprises petroleum pitch enamel repaired mouth, adhesive tape repaired mouth, powder epoxy repaired mouth, PE pyrocondensation repaired mouth.There is the different techniques shortcoming in these repaired mouth modes: wherein petroleum pitch enamel contaminate environment, temperature tolerance are poor; Cold winding band is anticorrosion, and cohesive force is poor, and water-repellancy is poor, and intensity is low, and is affected by environment big; Powder epoxy coat poor water resistance, construction difficulty; PE pyrocondensation difficulty of construction is big, needs heat treated, and cost is high.Exploitation is convenient to on-the-spot field joint construction, antiseptic property and is met the solvent-free epoxy heavy-duty anticorrosive coating that relevant criterion requires and have great advance for this reason.
Summary of the invention
Technical problem to be solved by this invention provides a kind of steel buried ground joint coating on pipeline and uses solvent-free epoxy heavy-duty anticorrosive coating; Be applicable to the preventing corrosion of repaired mouth of steel buried pipeline; Also can be applicable to the anticorrosion of the anticorrosion of newly-built pipework and other steel construction piece and reinforced concrete works; Product performance are not less than the powder epoxy coat, can satisfy the corrosion-proof technology for pipeline requirement of steel buried ground fully, and easy construction, satisfy the application requiring of joint coating on pipeline.
For the purpose that realizes solving the problems of the technologies described above, the present invention has adopted following technical scheme:
A kind of steel buried of the present invention ground joint coating on pipeline is used solvent-free epoxy heavy-duty anticorrosive coating; Comprise first and second components, wherein the mass percent of each raw material of first component is: the mineral-filled material of epoxy resin 30～45%, glycidyl ether reactive thinner 5～15%, silicone antifoam agent 0.05～1%, composite antirust pigment 20～35%, other pigment 3～10%, permanent white 5～15%, other mineral-filled material 10～20%, polyamide wax 0.3～1.5%; Each raw material of second component is that first component total mass per-cent is: polyamide curing agent 10～25%, Mannich base solidifying agent 5～15%, curing catalyst 0.5 ~ 2%; Quality is than first component: second component=100:15 ~ 35.
The specification of described epoxy resin is: molecular weight is 330 ~ 420, and oxirane value is 0.42 ~ 0.55.
Described glycidyl ether reactive thinner is specially cresyl glycidyl ether, phenyl glycidyl ether, butylglycidyl ether any or arbitrary proportion mixture.
Described silicone antifoam agent is specially the trade mark BYK-A530 of BYK company.
Described composite antirust pigment is the composite iron-titanium powder rust-stabilising pigment.
Described other pigment are iron oxide black, iron oxide black, white titanium pigment, carbon black any or arbitrary proportion mixture.
Described polyamide wax is the ULTRA amide waxe of CRAY VALLY company.
Described other mineral-filled material are talcum powder, mica powder, Feldspar Powder any or arbitrary proportion mixture.
Described polyamide curing agent specification is: amine value 200 ~ 400mgKOH/g, the polymeric amide of preferred amines value 250 ~ 350 mgKOH/g.
Described Mannich base solidifying agent specification is: amine value 400 ~ 550mgKOH/g.
Described curing catalyst is specially DMP-30.
Steel buried of the present invention ground joint coating on pipeline is used solvent-free epoxy heavy-duty anticorrosive coating; Its preparation method is: the first component is that epoxy resin, reactive thinner and silicone antifoam agent are added in the stainless steel scuffing of cylinder bore, after high speed dispersion is even, adds composite antirust pigment, mineral-filled material and other pigment again; Even through high speed dispersion again; Sand milling, fineness reach≤get final product discharging during 100 μ m, and filter the back with 80 mesh filter screens and pack; The second component is in proportion Mannich base, polyamide curing agent and curing catalyst to be added to respectively in the stainless steel scuffing of cylinder bore, and low speed disperses 15min, mixes to get final product.
Steel buried of the present invention ground joint coating on pipeline is seen table 1. with the solvent-free epoxy heavy-duty anticorrosive coating the key technical indexes
Table 1, solvent-free epoxy heavy-duty anticorrosive coating the key technical indexes
Technical scheme characteristics of the present invention are:
(1) through adopting low-molecular-weight epoxy resin, reactive thinner, low viscous solidifying agent, color stuffing that the oil number low mechanical strength is high to make product of the present invention have better suited viscosity; Has good construction performance; Reply buried pipeline repaired mouth complicated construction environment satisfies construction requirement.
(2) through adopting low viscous polyamide curing agent, Mannich base solidifying agent and curing catalyst compounded technology, improve the curing speed of polyamide curing agent, the working life of taking into account polyamide curing agent simultaneously is long, snappiness is excellent and adhere to advantages such as strong; Through Mannich base solidifying agent and curing catalyst modification, it is dry to quicken coating, reaches rapid construction and repairs purpose fast.
(3) adopt composite antirust pigment and mineral-filled material composite; Composite antirust pigment can form chelating with steel substrate; Improve the antiseptic property of coating, and mineral-filled material has higher radius-thickness ratio, the sheet-like fiber structure has good shielding function; The comprehensive mechanical performance of enhancement coating, water proof anti-seepage, freedom from cracking.
(4) for improving the coating application performance, select strong, the low cured type of thixotropic agent of polymeric amide of thixotropy for use to the influence of coating kinematic viscosity, the polyamide wax thixotropic agent has good thixotropy, can improve the sag prevention property of coating, and can obviously not increase the viscosity of coating.Thereby realize improving thixotroping effect and low viscous balance, one time the application coating thickness can reach 800 microns not saggings.
During concrete the construction, (please specifically describe construction and coating method of use with literal, accompanying drawing has been deleted exactly.Patent document does not generally allow to use photo except surface tissue.）
Through adopting technique scheme, the present invention has following beneficial effect:
Solvent-free epoxy heavy-duty anticorrosive coating of the present invention is because solvent-free, pure epoxy belongs to environmentally friendly, resource-conserving coating; Owing to solvent-free, the preservative property of coating have been improved, chemical proofing and insulativity; Owing to adopted mineral-filled material, improved tenacity, wear resistance and the shock resistance of coating.
Description of drawings
Fig. 1 is solvent-free epoxy heavy-duty anticorrosive coating first component technological process of production figure.
Embodiment
The embodiment of the invention is seen table 2.
Table 2, embodiment
| First component starting material title | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Epoxy resin | 30 | 35 | 45 |
| Reactive thinner | 5 | 10 | 13.5 |
| Silicone antifoam agent | 0.05 | 0.5 | 1 |
| Composite antirust pigment | 33 | 20 | 15 |
| Other mineral-filled material | 10 | 15 | 10 |
| Polyamide wax | 1.5 | 1 | 0.5 |
| The mineral-filled material of permanent white | 15 | 10 | 5 |
| Other pigment | 5.45 | 8.5 | 10 |
| Second component starting material title | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Polyamide curing agent | 10 | 20 | 25 |
| The Mannich base solidifying agent | 8 | 14 | 5 |
| Curing catalyst | 0.5 | 1 | 2 |
Among the embodiment 1, the epoxy resin trade mark is E51, and reactive thinner is a cresyl glycidyl ether; The silicone antifoam agent trade mark is BYK-A530, and composite antirust pigment is composite iron-titanium powder, and other mineral-filled material are talcum powder; Other pigment are red iron oxide; Polyamide wax is the ULTRA amide waxe of CRAY VALLY company, and the mineral-filled material of permanent white is 500 purpose ground barium sulfates, and the Mannich base solidifying agent is the T31 solidifying agent; Polyamide curing agent is 125 polyamide curing agent for Kening Co.,Ltd's trade mark, and curing catalyst is DMP-30.
Among the embodiment 2, the epoxy resin trade mark is E44, and reactive thinner is a phenyl glycidyl ether; The silicone antifoam agent trade mark is BYK-A530, and composite antirust pigment is composite iron-titanium powder, and other mineral-filled material are Feldspar Powder; Other pigment are white titanium pigment; Polyamide wax is the ULTRA amide waxe of CRAY VALLY company, and the mineral-filled material of permanent white is 500 purpose ground barium sulfates, and the Mannich base solidifying agent is the T31 solidifying agent; Polyamide curing agent is that the CRAY VALLY company trade mark is 140 polyamide curing agent, and curing catalyst is DMP-30.
Among the embodiment 3, the epoxy resin trade mark is E52, and reactive thinner is a butylglycidyl ether; The silicone antifoam agent trade mark is BYK-A530, and composite antirust pigment is composite iron-titanium powder, and other mineral-filled material are mica powder; Other pigment are iron oxide black; Polyamide wax is the ULTRA amide waxe of CRAY VALLY company, and the mineral-filled material of permanent white is 500 purpose ground barium sulfates, and the Mannich base solidifying agent is the T31 solidifying agent; Polyamide curing agent is 150 polyamide curing agent for Kening Co.,Ltd's trade mark, and curing catalyst is DMP-30.
The key technical indexes of table 3, embodiment 2
Claims (10)
1. a steel buried ground joint coating on pipeline is used solvent-free epoxy heavy-duty anticorrosive coating; It is characterized in that comprising first and second components, wherein the mass percent of each raw material of first component is: the mineral-filled material of epoxy resin 30～45%, glycidyl ether reactive thinner 5～15%, silicone antifoam agent 0.05～1%, composite antirust pigment 20～35%, other pigment 3～10%, permanent white 5～15%, other mineral-filled material 10～20%, polyamide wax 0.3～1.5%; Each raw material of second component is that first component total mass per-cent is: polyamide curing agent 10～25%, Mannich base solidifying agent 5～15%, curing catalyst 0.5 ~ 2%; Quality is than first component: second component=100:15 ~ 35.
2. use solvent-free epoxy heavy-duty anticorrosive coating according to the said steel buried of claim 1 ground joint coating on pipeline, it is characterized in that: the specification of described epoxy resin is: molecular weight is 330 ~ 420, and oxirane value is 0.42 ~ 0.55.
3. use solvent-free epoxy heavy-duty anticorrosive coating according to the said steel buried of claim 1 ground joint coating on pipeline, it is characterized in that: described glycidyl ether reactive thinner is cresyl glycidyl ether, phenyl glycidyl ether, butylglycidyl ether any or arbitrary proportion mixture.
4. use solvent-free epoxy heavy-duty anticorrosive coating according to the said steel buried of claim 1 ground joint coating on pipeline, it is characterized in that: described silicone antifoam agent is the trade mark BYK-A530 of BYK company.
5. use solvent-free epoxy heavy-duty anticorrosive coating according to the said steel buried of claim 1 ground joint coating on pipeline, it is characterized in that: described composite antirust pigment is the composite iron-titanium powder rust-stabilising pigment; Other pigment are the mixture of red iron oxide, iron oxide black, white titanium pigment, carbon black any or arbitrary proportion.
6. use solvent-free epoxy heavy-duty anticorrosive coating according to the said steel buried of claim 1 ground joint coating on pipeline, it is characterized in that: described other mineral-filled material are the mixture of talcum powder, mica powder, Feldspar Powder any or arbitrary proportion.
7. use solvent-free epoxy heavy-duty anticorrosive coating according to the said steel buried of claim 1 ground joint coating on pipeline, it is characterized in that: described polyamide curing agent specification is: amine value 200 ~ 400mgKOH/g.
8. use solvent-free epoxy heavy-duty anticorrosive coating according to the said steel buried of claim 1 ground joint coating on pipeline, it is characterized in that: described Mannich base solidifying agent specification is: amine value 400 ~ 550mgKOH/g.
9. use solvent-free epoxy heavy-duty anticorrosive coating according to the said steel buried of claim 1 ground joint coating on pipeline, it is characterized in that: described curing catalyst is DMP-30.
10. use solvent-free epoxy heavy-duty anticorrosive coating according to the said steel buried of claim 1 ground joint coating on pipeline, it is characterized in that: described polyamide wax is the ULTRA amide waxe of CRAY VALLY company.
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Cited By (13)
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| CN104017458A (en) * | 2014-03-31 | 2014-09-03 | 中国船舶重工集团公司第七二五研究所 | Solvent-free epoxy antirust coating capable of coating with rust and preparation method thereof |
| CN105219214A (en) * | 2015-09-21 | 2016-01-06 | 李成 | A kind of high molecular nanometer is cross-linked composite heavy corrosion protection emulsion and making method |
| CN105439625A (en) * | 2015-11-12 | 2016-03-30 | 浙江大学 | Tenacity coating used for corrosion prevention of reinforcing steel bar and coating method thereof |
| CN106189718A (en) * | 2016-08-30 | 2016-12-07 | 福州皇家地坪有限公司 | A kind of modified epoxy coal bituminous coating and preparation method thereof |
| CN106439263A (en) * | 2016-11-21 | 2017-02-22 | 无锡金顶石油管材配件制造有限公司 | Anti-corrosion petroleum pipeline |
| CN106634451A (en) * | 2016-12-28 | 2017-05-10 | 天津嘉石水泥制品有限公司 | Cement pipe internal anticorrosion method, anticorrosion paint and preparation method of anticorrosion paint |
| CN109181489A (en) * | 2018-09-30 | 2019-01-11 | 惠州市双信达实业有限公司 | A kind of metal surface protection epoxy primer |
| JP2019515991A (en) * | 2016-04-19 | 2019-06-13 | ザ シャーウィン ウィリアムズ カンパニー | Two component epoxy resin paint |
| CN110724440A (en) * | 2019-12-02 | 2020-01-24 | 长园长通新材料股份有限公司 | Low-temperature-resistant two-component solvent-free epoxy coating for pipeline joint coating |
| CN111842071A (en) * | 2020-07-31 | 2020-10-30 | 陕西宇阳石油科技工程有限公司 | On-site coating method for epoxy coating of steel pipeline |
| CN112011226A (en) * | 2020-09-05 | 2020-12-01 | 安徽省金盾涂料有限责任公司 | High-solid-content low-VOC (volatile organic compound) connecting paint |
| CN114044880A (en) * | 2021-09-28 | 2022-02-15 | 昆明国松特种涂料有限公司 | Polycarbonate epoxy resin, solvent-free anticorrosive paint and application |
| CN116004088A (en) * | 2023-01-16 | 2023-04-25 | 广州立邦涂料有限公司 | Paint coated in high-humidity environment and preparation method and application thereof |
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| CN104017458A (en) * | 2014-03-31 | 2014-09-03 | 中国船舶重工集团公司第七二五研究所 | Solvent-free epoxy antirust coating capable of coating with rust and preparation method thereof |
| CN105219214A (en) * | 2015-09-21 | 2016-01-06 | 李成 | A kind of high molecular nanometer is cross-linked composite heavy corrosion protection emulsion and making method |
| CN105439625A (en) * | 2015-11-12 | 2016-03-30 | 浙江大学 | Tenacity coating used for corrosion prevention of reinforcing steel bar and coating method thereof |
| US10844239B2 (en) | 2016-04-19 | 2020-11-24 | Valspar Sourcing, Inc. | Two-component epoxy resin paint |
| JP2019515991A (en) * | 2016-04-19 | 2019-06-13 | ザ シャーウィン ウィリアムズ カンパニー | Two component epoxy resin paint |
| EP3445797A4 (en) * | 2016-04-19 | 2019-12-04 | The Sherwin-Williams Company | Two-component epoxy resin paint |
| CN106189718A (en) * | 2016-08-30 | 2016-12-07 | 福州皇家地坪有限公司 | A kind of modified epoxy coal bituminous coating and preparation method thereof |
| CN106439263A (en) * | 2016-11-21 | 2017-02-22 | 无锡金顶石油管材配件制造有限公司 | Anti-corrosion petroleum pipeline |
| CN106634451A (en) * | 2016-12-28 | 2017-05-10 | 天津嘉石水泥制品有限公司 | Cement pipe internal anticorrosion method, anticorrosion paint and preparation method of anticorrosion paint |
| CN106634451B (en) * | 2016-12-28 | 2019-05-14 | 天津嘉石水泥制品有限公司 | Preserving method, anticorrosive paint and preparation method thereof inside pipe of cement |
| CN109181489A (en) * | 2018-09-30 | 2019-01-11 | 惠州市双信达实业有限公司 | A kind of metal surface protection epoxy primer |
| CN110724440A (en) * | 2019-12-02 | 2020-01-24 | 长园长通新材料股份有限公司 | Low-temperature-resistant two-component solvent-free epoxy coating for pipeline joint coating |
| CN111842071A (en) * | 2020-07-31 | 2020-10-30 | 陕西宇阳石油科技工程有限公司 | On-site coating method for epoxy coating of steel pipeline |
| CN112011226A (en) * | 2020-09-05 | 2020-12-01 | 安徽省金盾涂料有限责任公司 | High-solid-content low-VOC (volatile organic compound) connecting paint |
| CN114044880A (en) * | 2021-09-28 | 2022-02-15 | 昆明国松特种涂料有限公司 | Polycarbonate epoxy resin, solvent-free anticorrosive paint and application |
| CN114044880B (en) * | 2021-09-28 | 2024-01-09 | 昆明国松特种涂料有限公司 | Polycarbonate epoxy resin, solvent-free anticorrosive paint and application |
| CN116004088A (en) * | 2023-01-16 | 2023-04-25 | 广州立邦涂料有限公司 | Paint coated in high-humidity environment and preparation method and application thereof |
| CN116004088B (en) * | 2023-01-16 | 2024-02-06 | 广州立邦涂料有限公司 | Paint coated in high-humidity environment and preparation method and application thereof |
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