CN101440251A - Methanol-resistant, static-conducting and anti-corrosive paint - Google Patents
Methanol-resistant, static-conducting and anti-corrosive paint Download PDFInfo
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- CN101440251A CN101440251A CNA2008100802007A CN200810080200A CN101440251A CN 101440251 A CN101440251 A CN 101440251A CN A2008100802007 A CNA2008100802007 A CN A2008100802007A CN 200810080200 A CN200810080200 A CN 200810080200A CN 101440251 A CN101440251 A CN 101440251A
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- methanol
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Abstract
The invention discloses a methanol-resistant electrostatic conductive anticorrosive coating, which consists of the following raw materials according to the weight ratio: 18 to 33 of epoxy resin, 8 to 20 of modified arylated alkyl amine curing agent, 18 to 35 of electrostatic conductive filler, 1 to 30 of pigment, 1 to 30 of filler, 2 to 4 of auxiliary agent, and 10 to 30 of diluting agent, wherein the epoxy resin consists of an epoxy resin E44 and an epoxy resin E51 according to the weight ratio of 2-3:5; and the electrostatic conductive filler consists of conductive mica powder and conductive zinc oxide according to the weight ratio of 5:1-2. A final product has good electrostatic conductivity, and the resistivity on the surface of a paint film is between 10<6> and 10<7>omega; the final product has good corrosion resistance, can not seep particles when storing methanol for a long time, and has no pollution to the methanol; and the final product has good stability of electric conductivity, and the resistivity on the surface of the paint film has no obvious change through the soaking of the methanol.
Description
Technical field
The present invention relates to a kind of coating, specifically a kind of methanol-resistant, static-conducting and anti-corrosive paint.
Background technology
Methyl alcohol is easy to produce static in loading and unloading, transportation, storage process, therefore, reservoir walls should be used the anti-electrostatic anticorrosive coating.The static conductive coating that uses in the prior art has common epoxies, polyurethanes, phenolic etc. because space structure is fine and close inadequately, through the evidence methanol molecules be easy to by, be in for a long time in the methyl alcohol environment, filming is easy to swelling, foaming, and finally comes off.On the other hand, the electrostatic conductive performance poor stability of static conductive coating in the prior art is along with the prolongation of time, electrostatic conductive performance descends, and can not in time leak static charge, in case build-up of static charges is to above the breaking down field strength of medium the time, will cause spark discharge, lead to fire explosion.
And the content of conductivity, whiteness and the depositing metal oxide of the employed static conductive filling material of preparation electrically conducting coating is closely related, therefore, when conducting powder content is low, conducting powder whiteness height, but the electrostatic conductive performance general homology descends.Therefore, the depth of electrostatic conductive performance and painting color is difficult to satisfactory to both parties.
Summary of the invention
Purpose of the present invention just provides the methanol-resistant, static-conducting and anti-corrosive paint of a kind of coating densification, the corrosion of anti-methyl alcohol and electrostatic conductive performance good stability.
Methanol-resistant, static-conducting and anti-corrosive paint of the present invention, form by weight by following raw material:
The A component
Resins, epoxy 18~33, static conductive filling material 18~35,
Pigment 1~30, filler 1~30,
Auxiliary agent 2~4, thinner 10~30;
The B component
Modification virtue fat amine curing agent 8~20.
Among the present invention, Resins, epoxy is made up of by weight the ratio of 2~3:5 Resins, epoxy E44, Resins, epoxy E51; Solidifying agent is D8196 or D8190.Static conductive filling material is made up of by weight the ratio of 5:1~2 conductive mica powder, conductive zinc oxide.
Pigment of the present invention, filler, auxiliary agent and thinner all can use by conventional materials and consumption in the prior art.Pigment can be selected one or more the mixing in titanium dioxide, ferric oxide (red, Huang), yellow ultramarine, zinc-chrome yellow or the zinc sulfide white for use.Filler is one or more the mixing in barium sulfate, zinc phosphate, zinc oxide, talcum powder, mica powder, magnesiumcarbonate, aluminium triphosphate or the lime carbonate.
Auxiliary agent of the present invention is one or more the mixing in anti-settling agent, wetting dispersing agent, flow agent or the defoamer.Wherein anti-settling agent is one or more mixing in polyethylene wax, polyamide wax, organobentonite or the potter's clay.Wetting dispersing agent is unsaturated carboxylic acid amine salt class, modified polyorganosiloxane class, one or more the mixing in polyamide-based.Flow agent is one or more mixing in polyether-modified polydimethylsiloxane class, the fluorine-carbon modified polyacrylic.Defoamer is one or more mixing in modified organic silicon oxygen alkane type, broken bubble polymkeric substance, the dimethyl silicone oil.
Thinner of the present invention is one or more the mixing in dimethylbenzene, propyl carbinol, isopropylcarbinol, the pimelinketone.
The Resins, epoxy that the present invention uses can with the used solidifying agent of the present invention in conjunction with forming fine and close spatial network, guarantee functional color stuffing is tightly coated, medium osmosis is not corroded.And the carbochain of Resins, epoxy E44 is longer, not only can give to film certain snappiness is provided, and with the used solidifying agent generation of the present invention curing reaction the time, can not occur owing to active group too much causes the too fast problem that makes some thinner also have little time to volatilize to be closed in the paint film of curing speed.The evaporable thinner does not cause paint film that the space is arranged in paint film, and is poor because of its density, makes that corrosive medium is easy to infiltrate, thereby causes the degradation of finished product protection against corrosion, anti-methyl alcohol.The present invention is with Resins, epoxy E44 and the E51 ratio component epoxy mixture in 2~3:5, thereby the paint film density that both can obtain obtains the good corrosive effect of anti-methyl alcohol, go back the may command curing speed simultaneously, make and extend to 6~8 hours set time, realize both improving the salient features of finished product thus simultaneously, helped the multipurpose of constructing operation again.
The modification virtue fat amine hardener that the present invention adopts, combination as aromatic amine and aliphatic amide, have fast, the colourless advantage of the speed of response of aliphatic amide and the advantage good of aromatic amine with the Resins, epoxy compatibility, especially introduce long hydrocarbon chain on the modification virtue fat amine curing agent molecule and therefore had good snappiness, because the phenolic hydroxyl group on the phenyl ring of modification virtue fat amine curing agent has katalysis, and the part amido is connected on the alkyl, so the curability at low temperatures of finished product is good.Because the part active primary amine base of this solidifying agent is closed, therefore using under higher levels of humidity does not still influence gloss and recoatability.
Static conductive filling material is selected conductive mica powder and the conductive zinc oxide ratio composition mixture with 5:1~2 for use.The static conductive filling material that obtains according to the above ratio has the effect of synergy during use, make the electrostatic stabilization of leading of finished product be significantly improved; Simultaneously, because its synergistic function, both use together and can reduce the consumption of static conductive filling material under the prerequisite that obtains the identical conduction effect.Thus, under the certain situation of overall solid content, the reduction of static conductive filling material consumption can make all the other effective constituents such as anticorrosion raw material consumption suitably increase, thereby the antiseptic property of finished product is improved.The static conductive filling material mixture that the present invention uses is except that having excellent conductivity, and the stability of dispersiveness, whiteness and electrostatic conductive performance all is better than single static conductive coating.Dispersiveness makes the coating preparation process that operability preferably be arranged, and for the static conductive coating as the methyl alcohol reservoir walls, white or near-white are easy to find the defective of reservoir walls.Because the electrostatic conductive performance good stability of static conductive filling material used in the present invention makes coating of the present invention when being used for the methyl alcohol reservoir walls, exists under the situation in the METHANOL MEDIUM condition, the paint film electrostatic conductive performance descends seldom, and surface resistivity does not have to change substantially.
The present invention adopts above-mentioned specified raw material to make finished product by specified proportion, and not only preparation technology is simple, easy handling, and the various performances of made finished product all are better than existing procucts: finished product has good electrostatic conductiveness, and coating surface resistivity is 10
6~10
7Ω; Finished product excellent corrosion resistance, paint film have good acidproof, alkaline-resisting, anti-gasoline, anti-diesel oil, water-fast, salt water resistance corrosion; Standing storage methyl alcohol can not ooze out particle, and is pollution-free to methyl alcohol; The conductivity good stability, through the immersion of methyl alcohol, coating surface resistivity does not have considerable change.
Methanol-resistant, static-conducting and anti-corrosive paint preparation method of the present invention is conventional preparation method, and concrete steps are: take by weighing earlier each raw material in proportion.Pigment, filler are put in the Resins, epoxy that mixes, added total amount 1/3-1/2 thinner and stir, be ground to fineness 25~40 μ m through sand mill, discharging, adding static conductive filling material, auxiliary agent and remaining diluent stir and make the A component.During use B component solidifying agent added mix in the A component get final product finished product.
Embodiment
The raw materials used commercially available prod that is of all embodiment.
Embodiment 1:
The preparation method:
Weighing following raw materials according in proportion:
The A component
Resins, epoxy E44 9.75kg, Resins, epoxy E51 16.25kg,
Conductive mica powder 20.80kg, conductive zinc oxide 4.2kg,
Titanium dioxide 16kg, zinc sulfide white 2.0kg,
Zinc phosphate 20kg, Ployethylene Wax 2kg,
Dimethylbenzene 20kg;
The B component
Solidifying agent D8190 16kg.
Resins, epoxy E44 and Resins, epoxy E51 are mixed.Pigment titanium white and zinc sulfide white and filler zinc phosphate are put in the Resins, epoxy, adding 8kg thinner dimethylbenzene stirs, be ground to fineness 25~40 μ m through sand mill, adding static conductive filling material conductive mica powder and conductive zinc oxide and auxiliary agent Ployethylene Wax and remaining 12kg diformazan benzo stir and make the A component after the discharging.During use B component solidifying agent added mix in the A component get final product finished product.
The made finished product of present embodiment after tested, its technical indicator is as shown in table 1.
The raw material of embodiment 2-8 is formed as shown in table 2, and the preparation method is all identical with embodiment 1, and made finished product all can be realized goal of the invention of the present invention.
Table 1
Project | Detected result detection method evaluation criteria |
Anti-distilled water immersion, 52 ± 1 ℃, 30 days | Non-foaming, the GB/T 1733-1993 that do not come off of paint film, the range estimation of first method |
The gasoline of anti-93# soaks, 30 days | Paint film is non-foaming, the GB/T 1734-1993 that do not come off range estimation |
Anti-diesel oil soaks, 30 days | Non-foaming, the GB/T 9274-1988 that do not come off of paint film, the range estimation of first method |
Anti-3% saline soak, 30 days | Non-foaming, the GB/T 9274-1988 that do not come off of paint film, the range estimation of first method |
Anti-5%H 2SO 4Soak 10 days | Non-foaming, the GB/T 9274-1988 that do not come off of paint film, the range estimation of first method |
Anti-5%NaOH soaks, 10 days | Non-foaming, the GB/T 9274-1988 that do not come off of paint film, the range estimation of first method |
Anti-methyl alcohol (SILVER REAGENT) soaks, 30 days | Non-foaming, the GB/T 92741988 that do not come off of paint film, the range estimation of first method |
Resistant methyl alcohol (95% methyl alcohol, 5% water) soaks, 30 days | Non-foaming, the GB/T 9274-1988 that do not come off of paint film, the range estimation of first method |
Salt fog resistance, 500 hours | Paint film is non-foaming, GB/T 1771 GB/T1766-1995 do not come off |
Surface resistivity, Ω surface resistivity, Ω (soaking methyl alcohol after 30 days) | 10 6—10 7GB/T 16906-1997 record data 10 6—10 7GB/T 16906-1997 record data |
Table 2
Claims (3)
1, a kind of methanol-resistant, static-conducting and anti-corrosive paint is characterized in that being made up of by weight following raw material:
The A component
Resins, epoxy 18~33
Static conductive filling material 18~35
Pigment 1~30
Filler 1~20
Auxiliary agent 2~4
Thinner 10~30;
The B component
Modification virtue fat amine curing agent 8~20;
Wherein, Resins, epoxy is made up of by weight the ratio of 2~3:5 Resins, epoxy E44, Resins, epoxy E51; Static conductive filling material is made up of by weight the ratio of 5:1~2 conductive mica powder, conductive zinc oxide.
2, methanol-resistant, static-conducting and anti-corrosive paint according to claim 1 is characterized in that being made up of by weight following raw material:
The A component
Resins, epoxy 22~28
Static conductive filling material 23~31
Pigment 10~20
Filler 10~20
Auxiliary agent 2~4
Thinner 10~30;
The B component
Modification virtue fat amine curing agent 12~18.
3, methanol-resistant, static-conducting and anti-corrosive paint according to claim 2 is characterized in that being made up of by weight following raw material:
The A component
Resins, epoxy 26
Static conductive filling material 25
Pigment 18
Filler 20
Auxiliary agent 3
Thinner 20;
The B component
Modification virtue fat amine curing agent 16.
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CN2008100802007A CN101440251B (en) | 2008-12-22 | 2008-12-22 | Methanol-resistant, static-conducting and anti-corrosive paint |
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CN2008100802007A CN101440251B (en) | 2008-12-22 | 2008-12-22 | Methanol-resistant, static-conducting and anti-corrosive paint |
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CN101440251B CN101440251B (en) | 2011-06-22 |
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CN101892003A (en) * | 2010-07-06 | 2010-11-24 | 国网电力科学研究院武汉南瑞有限责任公司 | Nano conductive anti-corrosive paint for earth screen |
CN101985515A (en) * | 2010-06-30 | 2011-03-16 | 苏州贝得科技有限公司 | Refrigerant-resistant sealing glue for high-voltage motor and preparation method thereof |
CN102051107A (en) * | 2010-12-25 | 2011-05-11 | 厦门双瑞船舶涂料有限公司 | Light-colored thick paste type epoxy static conductive anticorrosive paint and preparation method thereof |
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CN102585665A (en) * | 2012-02-23 | 2012-07-18 | 石家庄市金达特种涂料有限公司 | Methanol-gasoline-resisting static-electricity-conducting anticorrosive paint |
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CN104559677A (en) * | 2015-01-28 | 2015-04-29 | 北京市银帆涂料有限责任公司 | Anticorrosive paint for methanol storage tanks |
CN105086761A (en) * | 2015-08-21 | 2015-11-25 | 安徽汇利涂料科技有限公司 | Solvent-resistant static-conducting epoxy paint |
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CN101892003A (en) * | 2010-07-06 | 2010-11-24 | 国网电力科学研究院武汉南瑞有限责任公司 | Nano conductive anti-corrosive paint for earth screen |
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CN105585936A (en) * | 2015-07-07 | 2016-05-18 | 江苏瑞和新材料股份有限公司 | Efficient special heavy anti-corrosion coating |
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