CN104927564B - Epoxy zinc alloy paint used for marine corrosion environment construction - Google Patents
Epoxy zinc alloy paint used for marine corrosion environment construction Download PDFInfo
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Abstract
The invention discloses epoxy zinc alloy paint used for marine corrosion environment construction. The epoxy zinc alloy paint consists of a component A and a component B, wherein the component A comprises epoxy resin, zinc alloy powder, a body filler, nano silica, polyamide wax, an organic solvent and a conductive multi-wall carbon nano tube; the component B consists of an epoxy polyamide curing agent and an organic solvent; in use, the component A and the component B are mixed in a weight part ratio of 10 to 1 to prepare the epoxy zinc alloy paint; according to the IOS20340 standards, a coating has a single-side stripping value of less than 3.0 mm in a resistance to 4200h cycling ageing test, has excellent shielding performance, good wear resistance, outstanding cathode stripping resistance and cycling ageing resistance, relatively low VOCs (volatile organic chemicals) content performance and very outstanding corrosion resistance, and meets the authentication use requirements of the marine engineering paint.
Description
Technical field
Applied the invention belongs to technical field of coatings, especially a kind of epoxy kirsite for the construction of marine corrosion environment
Material.
Background technology
Marine environment is a harsh corrosive environment window, harshness due to marine corrosion environment, particularly marine
Production platform is repaired away from land, inconvenience, therefore as follows to the performance requirement that coating is proposed：
Coating antiseptic phase effect is long, service life is at least 25 years；
Only make a small amount of simple maintenance during convenient maintenance, use；
It is required that the regulation that coating products pass through NorsokstandardM-501 standards, wherein NorsokstandardM-501
Examination criteria can refer to performance requirements of the ISO20340 to atmospheric region coating：Through its zinc-rich coating of 4200h circulation degradations
Corrosion at line spreads≤3mm, and the corrosion at non-zinc-rich coating line spreads≤8mm.
Corrosion resisting property of the hot dipping spelter coating in marine environment is improved, is always a study hotspot.After kirsite, heat
The corrosion resisting property of Zinc alloy film has obtained different degrees of raising, but during hot-dip, the diffusion speed of different metal
Degree is different, produces localized metallic phase enrichment region often to form corrosion weak spot, and zone oxidation containing magnesium such as high produces loose corruption
Erosion product and cause protection effect to weaken, under arms during easily cause coating premature failure and peeled off from base material.
Zhang Hongbin exists《Chlorine industry》The 6th interim alternative glass flake of allumen scale that describes is in coating within 1998
In largely use.In Han Zhangzhi etc.《Modern coatings and application》The 8th interim the describing of volume 13 uses zinc flake, aluminium within 2010
Zinc-aluminium base anticorrosive paint prepared by powder, with preferable corrosion resistance.But it is simple added in coating zinc powder and aluminium powder and
Coating prepared by common allumen, although the initial stage is with preferable cathodic protection effect, under arms after a period of time
The OCP of coating is changed greatly, and cathodic protection effect declines.
The content of the invention
To solve the above problems, the invention provides a kind of epoxy kirsite coating for the construction of marine corrosion environment,
The epoxy kirsite coating has good adhesive force, excellent cathodic protection effect and splendid corrosion barrier effect, its property
ISO20340 standards can be passed through to test the relevant authentication of ocean engineering coating, ocean engineering atmospheric region works is can be applied to
Corrosion protection, apply also for all multiple-projects such as bridge, ship, harbour, oil, chemical industry, railway, colliery and all kinds of steel constructions
Anti-corrosion protection.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of epoxy kirsite coating for the construction of marine corrosion environment, the epoxy kirsite coating is by first component and second
Component is constituted, containing epoxy resin, Zinc alloy powder, constitution filler, nano silicon, polyamide wax, organic in first component
Solvent and conductive multi-walled carbon nano-tubes, contain epoxy polyamide class curing agent and organic solvent, feature of the invention in second component
It is as follows：
The proportioning of first component by weight is:Epoxy resin 3~20, Zinc alloy powder 45~88, constitution filler 1~
30th, nano silicon 0.1~2, polyamide wax 0.3~2, organic solvent 0.5~20, conductive multi-walled carbon nano-tubes 0.5~5；
The proportioning of second component by weight is:Epoxy polyamide class curing agent 20~80, organic solvent 20~80；
Above-mentioned epoxy resin is bisphenol A type epoxy resin, it is desirable to the molecular weight of bisphenol A type epoxy resin between 200~
1500 and its epoxide number between 0.2~0.67；
The composition of above-mentioned Zinc alloy powder is Zn-Al-Mg-Si-Pb-Cd-Fe-Cu, it is desirable to which Zinc alloy powder is through 50~800
Eye mesh screen sieves, and Zinc alloy powder composition by weight percentage is：Al accounts for 0.5~10.0%, Mg and accounts for 1.0~8.0%, Si and accounts for
0.02~2.0%, Pb≤0.04%, Cd≤0.004%, Fe≤0.002%, Cu≤0.002%, remaining be zinc；
Above-mentioned constitution filler is any one in talcum powder, feldspar powder, wollastonite in powder and mica powder；
The granularity requirements of above-mentioned nano silicon are controlled in 5~100nm；
Above-mentioned organic solvent is any one in dimethylbenzene, n-butanol, phenmethylol, butyl acetate, or its any two, or
It is its wantonly three kinds；
In 10~100nm, its length requirement is controlled 10 for the outer wall caliber requirement control of above-mentioned conductive multi-walled carbon nano-tubes
~40 μm.
Above-mentioned epoxy polyamide class curing agent is the epoxy for epoxy resin being carried out into pre- addition reaction to polyamide and being synthesized
Polyamide-based curing agent, it is desirable to the amine value in epoxy polyamide class curing agent between 40~600mgKOH/g, its active hydrogen
Equivalent is between 50~450geg-1Between；
Epoxy resin, organic solvent, conductive multi-walled carbon nano-tubes are separately added into by the weight of above-mentioned first component
Disperseed in Scattered Kettle, the wire velocity control of dispersion impeller is in 3~20m/s and disperses to stir 10min~2h, then successively plus
Enter Zinc alloy powder, constitution filler, nano silicon, polyamide wax, dispersion impeller divides under the linear velocity of 6~20m/s afterwards
It is that can obtain first component to dissipate 20~50min of stirring；
Epoxy polyamide class curing agent and organic solvent are added in dispersion tank by the weight of above-mentioned second component
Stirring is warming up to 45~80 DEG C and 0.5~2h of insulation can obtain second component at this temperature；
By weight by first component when using:Second component=10:1 blent by prepare epoxy kirsite coating.
The preparation method of above-mentioned Zinc alloy powder is that zinc ingot metal is placed in smelting furnace to heat fusing, is added by weight percentage
The Si of 0.5~10.0% Al, 1.0~8.0% Mg and 0.02~2.0%, through the control range of other impurity of on-the-spot sample analysis
It is：Pb≤0.04%, Cd≤0.004%, Fe≤0.002%, Cu≤0.002%, it is to be dissolved and after stirring by come out of the stove
Kirsite is prepared, Zinc alloy powder is prepared by being crushed when the kirsite naturally cools to room temperature.
Between 60~400mgKOH/g, its active hydrogen equivalent weight is situated between the preferred amine value of above-mentioned epoxy polyamide class curing agent
In 85~300geg-1Between.
Due to using technical scheme as described above, the present invention to produce following good effect：
1st, epoxy kirsite coating of the invention has excellent cathodic protection effect and antiseptic property, and coating is through 4200h
Salt spray test its OCP change is smaller, with good antiseptic effect.
2nd, epoxy kirsite coating of the invention has excellent pliability and anti-corrosive properties, according to its painting of ISO20340 standards
Layer is less than 3.0mm in the unilateral stripping of resistance to 4200h circulation degradations, meets the certification use requirement of ocean engineering coating.
3rd, its volume solid weight of epoxy kirsite coating of the invention ＞ 60%, with solid point high, viscosity is low, You Jirong
The few advantage of the usage amount of agent, can be greatly reduced the VOCs volatilizations in production, construction, the solidification process of epoxy kirsite coating,
It is a kind of Environmentally friendly coatings.
Specific embodiment
The present invention is a kind of epoxy kirsite coating for the construction of marine corrosion environment, and the epoxy kirsite coating has
Excellent cathodic protection effect and antiseptic property, coating are smaller through its OCP change of 4200h salt spray tests, with good
Antiseptic effect.
Epoxy kirsite coating of the invention is made up of first component and second component, is closed containing epoxy resin, zinc in first component
Bronze end, constitution filler, nano silicon, polyamide wax, organic solvent and conductive multi-walled carbon nano-tubes, contain in second component
Epoxy polyamide class curing agent and organic solvent, wherein：
Epoxy resin is bisphenol A type epoxy resin, it is desirable to the molecular weight of bisphenol A type epoxy resin between 200~1500 and
Its epoxide number is between 0.2~0.67.
The composition of Zinc alloy powder is Zn-Al-Mg-Si-Pb-Cd-Fe-Cu, it is desirable to the eye mesh screen of Zinc alloy powder 50~800
Sieve, Zinc alloy powder composition by weight percentage is：Al account for 0.5~10.0%, Mg account for 1.0~8.0%, Si account for 0.02~
2.0%th, Pb≤0.04%, Cd≤0.004%, Fe≤0.002%, Cu≤0.002%, remaining be zinc, zinc ingot metal is placed on melting
Fusing is heated in stove, 0.5~10.0% Al, the Si of 1.0~8.0% Mg and 0.02~2.0% is added by weight percentage,
Control range through on-the-spot sample analysis other impurity is：Pb≤0.04%, Cd≤0.004%, Fe≤0.002%, Cu≤
0.002%, it is to be dissolved and after stirring by come out of the stove and prepare kirsite, carried out when the kirsite naturally cools to room temperature
Crushing can prepare Zinc alloy powder.Melting and crushing are prior art, and the present invention is only required in control Zinc alloy powder
The percentage composition of each element, adds Al, Mg to adjust the cathodic protection potential in Zinc alloy powder, while improving corrosion
The shielding properties of product, strengthens its corrosion resisting property；Si is added to cause that the middle each element of Zn-Al-Mg alloys more uniformly spreads, shape
Into the alloy phase of stabilization, its conductive and antiseptic property is improved.
Constitution filler is any one in talcum powder, feldspar powder, wollastonite in powder and mica powder, talcum powder, feldspar powder, silicon ash
Stone flour and mica powder are inorganic salts compound, and Chemical market is on sale.
The granularity requirements of nano silicon are controlled in 5~100nm.
Polyamide wax is on sale in Chemical market.
Organic solvent is any one in dimethylbenzene, n-butanol, phenmethylol, butyl acetate, or its any two, or its
Wantonly three kinds.
In 10~100nm, its length requirement is controlled in 10~40 μ for the outer wall caliber requirement control of conductive multi-walled carbon nano-tubes
m。
Epoxy polyamide class curing agent is the epoxy polyamides for epoxy resin being carried out into pre- addition reaction to polyamide and being synthesized
Amine curing agent, it is desirable to the amine value in epoxy polyamide class curing agent between 40~600mgKOH/g, its active hydrogen equivalent weight
Between 50~450geg-1Between.The preferred amine value of epoxy polyamide class solidification is between 60~400mgKOH/g, and its is active
Hydrogen equivalent is between 85~300geg-1Between.
The proportioning of first component by weight is:Epoxy resin 3~20, Zinc alloy powder 45~88, constitution filler 1~
30th, nano silicon 0.1~2, polyamide wax 0.3~2, organic solvent 0.5~20, conductive multi-walled carbon nano-tubes 0.5~5.
Epoxy resin, organic solvent, conductive multi-walled carbon nano-tubes are added separately to enter in Scattered Kettle by the weight of first component
Row dispersion, the wire velocity control of dispersion impeller is in 3~20m/s and disperses to stir 10min~2h, then sequentially adds Zinc alloy powder
End, constitution filler, nano silicon, polyamide wax, afterwards dispersion impeller disperse under the linear velocity of 6~20m/s stirring 20~
50min is that can obtain first component.Kirsite is dispersed in the epoxy, and the film of formation not only has good to metal base
Adhesive force well, good mechanical performance and anti-wear performance, while avoiding hot-dip local defect influence anti-corrosion and adhesion property.
It is preferred that the proportioning of conductive multi-walled carbon nano-tubes and Zinc alloy powder so that the two is collectively forming stabilization in coating
Conductive network, improves the cathodic protection effect of film.On the other hand conductive multi-wall carbon nano-tube is dispersed in film in threadiness, also
The pliability and mechanical property of film can be strengthened.
Nano silicon and polyamide wax interworking are added in zinc-rich paint, the thixotroping network of formation can be mutually complementary,
Coating can be kept good can opening effect and splendid mixing effect.Other nano silicon may play fine setting kirsite
The open-circuit-protection current potential of powder.
The proportioning of second component by weight is:Epoxy polyamide class curing agent 20~80, organic solvent 20~80.By second
Stirring is warming up to 45~80 during epoxy polyamide class curing agent and organic solvent are added to dispersion tank by the weight of component
DEG C and at this temperature insulation 0.5~2h be that can obtain second component.
With reference to three embodiments, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate this hair
It is bright, rather than limiting the scope of the invention.
Second component in upper table be directly by weight：First component:Second component=10:1 prepares, if by upper table second group
Each numerical value in point expands 10 times and is technical scheme simultaneously.
Test result of the invention see the table below.
It is visible by upper table：The present invention has excellent shielding properties, good anti-wear performance, the resistance to cathodic disbonding of protrusion
The VOCs content performance aging, relatively low with resistance to circulation.
Claims (3)
1. it is a kind of for marine corrosion environment construction epoxy kirsite coating, the epoxy kirsite coating is by first component and second group
Divide and constitute, epoxy resin, Zinc alloy powder, constitution filler, nano silicon, polyamide wax, You Jirong are contained in first component
Agent and conductive multi-walled carbon nano-tubes, contain epoxy polyamide class curing agent and organic solvent in second component, it is characterized in that：
The proportioning of first component by weight is:Epoxy resin 3~20, Zinc alloy powder 45~88, constitution filler 1~30, receive
Rice silica 0.1~2, polyamide wax 0.3~2, organic solvent 0.5~20, conductive multi-walled carbon nano-tubes 0.5~5；
The proportioning of second component by weight is:Epoxy polyamide class curing agent 20~80, organic solvent 20~80；
Above-mentioned epoxy resin is bisphenol A type epoxy resin, it is desirable to the molecular weight of bisphenol A type epoxy resin between 200~1500 and
Its epoxide number is between 0.2~0.67；
The composition of above-mentioned Zinc alloy powder is Zn-Al-Mg-Si-Pb-Cd-Fe-Cu, it is desirable to which Zinc alloy powder is through 50~800 mesh sieves
Net sieves, and Zinc alloy powder composition by weight percentage is：Al accounts for 0.5~10.0%, Mg and accounts for 1.0~8.0%, Si and accounts for 0.02
~2.0%, Pb≤0.04%, Cd≤0.004%, Fe≤0.002%, Cu≤0.002%, remaining be zinc；
Above-mentioned constitution filler is any one in talcum powder, feldspar powder, wollastonite in powder and mica powder；
The granularity requirements of above-mentioned nano silicon are controlled in 5~100nm；
Above-mentioned organic solvent is any one in dimethylbenzene, n-butanol, phenmethylol, butyl acetate, or its any two, or its
Wantonly three kinds；
In 10~100nm, its length requirement is controlled in 10~40 μ for the outer wall caliber requirement control of above-mentioned conductive multi-walled carbon nano-tubes
m；
Above-mentioned epoxy polyamide class curing agent is the epoxy polyamides for epoxy resin being carried out into pre- addition reaction to polyamide and being synthesized
Amine curing agent, it is desirable to the amine value in epoxy polyamide class curing agent between 40~600mgKOH/g, its active hydrogen equivalent weight
Between 50~450geg-1Between；
Epoxy resin, organic solvent, conductive multi-walled carbon nano-tubes are added separately to point by the weight of above-mentioned first component
Dissipate and disperseed in kettle, the wire velocity control of dispersion impeller is in 3~20m/s and disperses to stir 10min~2h, then sequentially adds zinc
Alloy powder, constitution filler, nano silicon, polyamide wax, afterwards dispersion impeller disperse to stir under the linear velocity of 6~20m/s
Mix 20~50min and can obtain first component；
Epoxy polyamide class curing agent and organic solvent are added in dispersion tank by the weight of above-mentioned second component are stirred
It is warming up to 45~80 DEG C and 0.5~2h of insulation can obtain second component at this temperature；
By weight by first component when using:Second component=10:1 blent by prepare epoxy kirsite coating.
2. according to claim 1 it is a kind of for marine corrosion environment construction epoxy kirsite coating, it is characterized in that：By zinc
Heating is melted during ingot is placed on smelting furnace, and Al, 1.0~8.0% Mg and 0.02 of addition 0.5~10.0% by weight percentage~
2.0% Si, the control range through on-the-spot sample analysis other impurity is：Pb≤0.04%, Cd≤0.004%, Fe≤0.002%,
Cu≤0.002%, it is to be dissolved and after stirring by come out of the stove and prepare kirsite, when the kirsite naturally cools to room temperature
Zinc alloy powder is prepared by being crushed.
3. according to claim 1 it is a kind of for marine corrosion environment construction epoxy kirsite coating, it is characterized in that：Epoxy
Between 60~400mgKOH/g, its active hydrogen equivalent weight is between 85~300geg for the amine value of polyamide-based curing agent-1Between.
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| CN108329802A (en) * | 2018-03-02 | 2018-07-27 | 济南大学 | A kind of bullet train leaf spring corrosion-resistant finishes and preparation method thereof |
| CN108976980A (en) * | 2018-05-29 | 2018-12-11 | 苏州宏久航空防热材料科技有限公司 | A kind of Cf/ SiC ceramic based composites surface resin strengthened coat and preparation method thereof |
| CN110224139B (en) * | 2019-05-31 | 2020-11-03 | 中国矿业大学 | Method for preparing porous carbon material electrode from paint waste residues |
| CN114213937A (en) * | 2021-12-30 | 2022-03-22 | 北京碧海云智新材料技术有限公司 | Zinc-rich powder coating and preparation method and application thereof |
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| CN104263189A (en) * | 2014-08-25 | 2015-01-07 | 湖南开磷雁峰塔涂料有限公司 | Epoxy zinc-rich primer containing phosphorus-titanium powder and preparing method thereof |
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| US20090218266A1 (en) * | 2008-03-03 | 2009-09-03 | Reyad Sawafta | Water treatment and methods of use |
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| CN101100578A (en) * | 2006-07-03 | 2008-01-09 | 中国人民解放军海军装备技术研究所 | Bi-component corrosion-proof dope |
| CN102345034A (en) * | 2011-10-12 | 2012-02-08 | 东北大学 | Method for preparing multielement corrosion-resistant hot-dipping alloy coating layer and raw materials |
| CN103173095A (en) * | 2013-03-06 | 2013-06-26 | 常州第六元素材料科技股份有限公司 | Zinc-rich epoxy anticorrosion paint and preparation method thereof |
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