CN102363689B - Heavy anticorrosive powder coating composition with high cathodic peeling resistance - Google Patents
Heavy anticorrosive powder coating composition with high cathodic peeling resistance Download PDFInfo
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Abstract
The invention discloses a heavy anticorrosive powder coating composition with high cathodic peeling resistance. The composition comprises epoxy resin, anticorrosive filler and curing agent; and the powder coating is prepared by the following steps of: mixing the components and a little flatting agent, defoaming agent, coupling agent and accelerant uniformly, adding the mixture into a screw extruder, performing melt extrusion at the temperature of between 100 and 125 DEG C, performing double-roller cooling and sheeting, adding fumed silica into the ground powder, screening with a rotary screen of 120 to 160 meshes, and collecting the powder, namely the powder coating. The powder coating is environmentally-friendly, can be recycled, and nearly has no any body hurt to the construction personnel.
Description
Technical field
The invention belongs to technical field of coatings.Specifically, relate to and have the powder paint compositions that a kind of high antikathode is peeled off.
Background technology
At present, oil and gas pipeline generally uses powder coating to carry out corrosion-proof coating, and is commonly used as 3 layers of PE, 3 layers of PP, clinkering monocycle oxygen and clinkering bis-epoxy, in the process of oil gas pipeline network construction, can adopt the corrosion of the method control steel pipe of galvanic protection.In the process of galvanic protection; sticking power between coating and the base material can be because galvanic protection produces ion migration and cathode hydrogen evolution; cause the disengaging of coating and base material; reduced the protective capability of coating to base material; cause the corrosion of steel pipe at last; cause the leakage of underground pipe network, bring tremendous loss and ecological crisis, thus antikathode to peel off be the core technology index of heavy anti-corrosion paint.
The antikathode stripping performance of the double antiseptic powder coating of main flow also just is up to state standards reluctantly on the market, development along with each field demands such as offshore oil productions, requirement for anticorrosion improves thereupon, therefore, develops a kind of demand that can become market at the powder coating of cathodic disbonding.
Summary of the invention
The purpose of this invention is to provide powder paint compositions and application thereof that a kind of high antikathode is peeled off, overcome above-mentioned prior art defective.Concrete scheme is as follows:
The double antiseptic powder coating composition that a kind of high antikathode is peeled off comprises following components in weight percentage:
Resins, epoxy 40～65%;
Solidifying agent 7～20%;
Flow agent 0.3～1.5%;
Defoamer 0.3～1.5%;
Anticorrosive packing 25～45%;
Coupling agent 0.5～5%;
Promotor 0.5～5%;
Pigment 0.5～1%.
Described Resins, epoxy is logical be bisphenol A epoxide resin as solid epoxy resins such as 604 resins, 904 resins, 014U resins, 85～115 ℃ of softening temperatures, oxirane value are generally 0.1～0.14; Sometimes also suitably add multi-functional Resins, epoxy South Asia 704 resins, celebrating Shandong 1167 or celebrating Shandong 1168 resins.
Described solidifying agent is phenols curing agent or dicy-curing agent.
To be that BYK 3900P or ESTEON PF-67(are aforementioned be the market trade mark of commodity to described flow agent), described defoamer is a st-yrax.
In described anticorrosive packing wollastonite, zinc phosphate, aluminium triphosphate, zinc powder, aluminium powder, mica powder, polynite, the aerosil one or more.
Described coupling agent is titanic acid ester, silane or aluminic acid ester.
Described promotor is glyoxaline compound, modified imidazole compounds or triphenyl phosphorus.
Described pigment is phthalocyanine blue, phthalein viridescent, titanium dioxide or iron oxide yellow.
Described aerosil is the mixture of wetting ability aerosil, hydrophobic silica and aluminum oxide-C.
Described anticorrosive packing is the composition that filler with corrosion proof function helps forming the corrosion and passivation film or stops the corrosive medium infiltration, as wollastonite, zinc phosphate, aluminium triphosphate, zinc powder, aluminium powder, mica powder, polynite etc., a kind of is to be feature to improve barrier, as mica, polynite, a kind of is feature with the electrochemical deposition, and as zinc powder, aluminium powder, aluminium triphosphate, zinc phosphate, wollastonite etc., this two classes filler uses jointly.
Above-mentioned powder paint compositions extruded under suitable temperature in screw extrusion press make the sheet abrasive dust, the acquisition powder coating sieves.
The present invention has following advantage: the cathodic disbonding area of coating is minimum when being galvanic protection, even deposit good flowability is arranged still on half a year.
Embodiment
Below, further specify content of the present invention with embodiment, but protection scope of the present invention is not limited in embodiment.Other variation and modification to those skilled in the art makes under the situation that does not deviate from the present invention's spirit and protection domain still are included within the protection domain of the present invention.
Embodiment 1
The proportioning raw materials of embodiment 1～3 (weight percent) is as shown in table 1 below:
Component by embodiment in the above-mentioned table 1 makes powder coating, solidifies 200 microns of coating thicknesses, coating curing degree 99% at 200 ℃ of following 2min.Cover polyethylene glue stick jacket material according to SY/T 0413-2002 standard, test 65 ℃, 48h, cathodic disbonding, the corrosion release coating is about 1～2mm, and 65 ℃, the 28d test result is 10～12mm.
Wherein, Resins, epoxy is 904H Resins, epoxy, and solidifying agent is 305 of the holy outstanding production of phenols curing agent such as Suzhou, and coupling agent is a titanate coupling agent.
Embodiment 2
The powder coating that makes by above-mentioned table 1 component, solidify at 200 ℃ of following 2.5min, 200 microns of coating thicknesses, coating curing degree 99% covers polyethylene glue stick jacket material according to SY/T 0413-2002 standard, test 65 ℃, 48h, cathodic disbonding, the corrosion release coating is about 1～2mm, 65 ℃, the 28d test result is 8mm.
Wherein, Resins, epoxy is 604 Resins, epoxy, and solidifying agent is the PS-2 that the big standing grain in phenols curing agent such as Xi'an is produced, and coupling agent is an aluminate coupling agent.
Embodiment 3
The powder coating that makes by above-mentioned table 1 component, under 200 ℃, 2 min solidify, 200 microns of coating thicknesses, coating curing degree 99%, cover polyethylene glue stick jacket material according to SY/T 0413-2002 standard, test 65 ℃, 48h, cathodic disbonding, the corrosion release coating is about 0.5～1mm, and 65 ℃, the 28d test result is 7mm.
Wherein, Resins, epoxy is 904H Resins, epoxy, and solidifying agent is a Dyhard RU 100, glyoxal ethyline promotor, and coupling agent is a silane coupling agent.
Embodiment 4
The powder coating that makes by said components, under 200 ℃, 2 min solidify, 200 microns of coating thicknesses, coating curing degree 99%, cover polyethylene glue stick jacket material according to SY/T 0413-2002 standard, test 65 ℃, 48h, cathodic disbonding, the corrosion release coating is about 0.5mm, and 65 ℃, the 28d test result is 3～5mm.
Wherein, Resins, epoxy is 604 Resins, epoxy, and solidifying agent is a dicy-curing agent, and the aluminium triphosphate of embodiment 1 is originally being executed in the example with liking that the non-floating type aluminium powder of card substitutes, and coupling agent is a titanate coupling agent.
Claims (9)
1. the double antiseptic powder coating composition that high antikathode is peeled off is characterized in that, comprises following components in weight percentage:
Resins, epoxy 40～65%;
Solidifying agent 7～20%;
Flow agent 0.3～1.5%;
Defoamer 0.3～1.5%;
Anticorrosive packing 25～45%;
Coupling agent 0.5～5%;
Promotor 0.5～5%;
Pigment 0.5～1%;
Described Resins, epoxy is bisphenol A epoxide resin, and 85～115 ℃ of softening temperatures, oxirane value are 0.1～0.14.
2. double antiseptic powder coating composition according to claim 1 is characterized in that, described solidifying agent is phenols curing agent or dicy-curing agent.
3. double antiseptic powder coating composition according to claim 1 is characterized in that, the trade names of described flow agent are BYK 3900P or ESTEON PF-67, and described defoamer is a st-yrax.
4. double antiseptic powder coating composition according to claim 1 is characterized in that, one or more in described anticorrosive packing wollastonite, zinc phosphate, aluminium triphosphate, zinc powder, aluminium powder, mica powder, polynite, the aerosil.
5. double antiseptic powder coating composition according to claim 1 is characterized in that, described coupling agent is titanic acid ester, silane or aluminic acid ester.
6. double antiseptic powder coating composition according to claim 1 is characterized in that, described promotor is glyoxaline compound, modified imidazole compounds or triphenyl phosphorus.
7. double antiseptic powder coating composition according to claim 1 is characterized in that, described pigment is phthalocyanine blue, phthalein viridescent, titanium dioxide or iron oxide yellow.
8. double antiseptic powder coating composition according to claim 4 is characterized in that, described aerosil is the mixture of wetting ability aerosil, hydrophobic silica and aluminum oxide-C.
9. according to claim 1 or 4 described double antiseptic powder coating compositions, it is characterized in that described anticorrosive packing is one or more in wollastonite, zinc phosphate, aluminium triphosphate, zinc powder, aluminium powder, mica powder, the polynite.
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| CN 201110307947 CN102363689B (en) | 2011-10-12 | 2011-10-12 | Heavy anticorrosive powder coating composition with high cathodic peeling resistance |
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| CN 201110307947 CN102363689B (en) | 2011-10-12 | 2011-10-12 | Heavy anticorrosive powder coating composition with high cathodic peeling resistance |
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| CN102363689A CN102363689A (en) | 2012-02-29 |
| CN102363689B true CN102363689B (en) | 2013-07-24 |
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Families Citing this family (17)
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| CN102993915A (en) * | 2012-12-25 | 2013-03-27 | 上海海隆赛能新材料有限公司 | 3PP (Propene Polymer) anti-corrosion epoxy powder primer and preparation method thereof |
| CN103289532B (en) * | 2013-07-05 | 2016-08-24 | 河北工业大学 | The preparation method of the epoxide powder coating that a kind of high antikathode is peeled off |
| CN103509436A (en) * | 2013-09-04 | 2014-01-15 | 安徽东方金河精密机械制造有限公司 | Heavy-duty anticorrosion powder paint composition with high cathodic disbonding resistance |
| CN103602209A (en) * | 2013-10-10 | 2014-02-26 | 安徽真信涂料有限公司 | Epoxy resin/metal powder automobile antirust paint and preparation method thereof |
| CN104140584B (en) * | 2014-07-13 | 2016-08-24 | 河北奥磊防腐设备有限公司 | Fluorination crosslinked polyethylene high-temperature anticorrosion powder |
| CN104152003B (en) * | 2014-08-28 | 2016-11-09 | 苏州洛特兰新材料科技有限公司 | A kind of pottery epoxy powder coating |
| CN104774532A (en) * | 2015-04-23 | 2015-07-15 | 浙江洋铭工贸有限公司 | Die-cast aluminum heating radiator ceramic coating and preparation method thereof |
| CN104861817A (en) * | 2015-04-28 | 2015-08-26 | 安徽同丰橡塑工业有限公司 | Preparation method for anti-cathodic-disbonding powder coatings |
| CN104861816A (en) * | 2015-04-28 | 2015-08-26 | 安徽同丰橡塑工业有限公司 | Powder paint resistant to high temperature and cathodic disbonding |
| CN104893493B (en) * | 2015-05-11 | 2017-03-01 | 国润恒科（天津）防腐工程技术有限公司 | A kind of high-performance double antiseptic powder coating and preparation method and application |
| CN104893507A (en) * | 2015-06-19 | 2015-09-09 | 上海海隆石油化工研究所 | Epoxy powder primer of 3PP (three-layer polypropylene) coating for high-temperature medium delivery pipe and preparation method of epoxy powder primer |
| CN105803448B (en) * | 2016-03-29 | 2018-12-25 | 深圳市中科宏业科技有限公司 | Aqueous, environmental protective corrosion inhibitor and preparation method thereof |
| CN106010143A (en) * | 2016-06-08 | 2016-10-12 | 合肥市燕美粉末涂料有限公司 | Anti-souring corrosion-resistant powder paint and preparing method thereof |
| CN111303725A (en) * | 2020-03-02 | 2020-06-19 | 成都新柯力化工科技有限公司 | Concrete reinforcing steel bar permeation anticorrosion powder coating and preparation method thereof |
| CN111454640A (en) * | 2020-05-20 | 2020-07-28 | 天津瑞远粉末涂料有限公司 | Pipeline anticorrosion epoxy powder coating containing hydroxyphenyl ketone compounds |
| CN112024338A (en) * | 2020-08-07 | 2020-12-04 | 伊恩斯国际新材料技术(北京)有限公司 | Method for spraying zinc by using environment-friendly super-corrosion-resistant new material |
| CN113185891B (en) * | 2020-12-22 | 2022-05-03 | 厦门望佳工贸有限公司 | Preparation method of powder coating |
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| CN101255291A (en) * | 2008-03-26 | 2008-09-03 | 陈大华 | Marine reinforced concrete anticorrosion paint and preparation method thereof |
| CN101508865B (en) * | 2009-03-20 | 2011-06-22 | 武汉铁神化工有限公司 | Solvent-free cardanol epoxy heavy-duty antiseptic paint and method for producing the same |
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Effective date of registration: 20170822 Address after: 200949 -5, 1825 Luo Dong Road, Baoshan Industrial Park, Shanghai, Baoshan District Patentee after: Technical service Hilong products (Shanghai) Co., Ltd. Address before: 200949, No. 1825 East Luo Road, Baoshan Industrial Park, Shanghai, Baoshan District Patentee before: Shanghai Hilong Shine New Material Co., Ltd. |
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