CN104212325A - Heat-resistance and weather-resistance epoxy acrylic polyurethane static-conduction coating for storage tank and preparation method thereof - Google Patents
Heat-resistance and weather-resistance epoxy acrylic polyurethane static-conduction coating for storage tank and preparation method thereof Download PDFInfo
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- CN104212325A CN104212325A CN201410496019.XA CN201410496019A CN104212325A CN 104212325 A CN104212325 A CN 104212325A CN 201410496019 A CN201410496019 A CN 201410496019A CN 104212325 A CN104212325 A CN 104212325A
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Abstract
The invention relates to a heat-resistance and weather-resistance epoxy acrylic polyurethane static-conduction coating for a storage tank and a preparation method thereof, wherein A solution is prepared by 604 epoxy resin, BS963 acrylic resin, solvent, promoter, coupling agent, dryer, micro powder, fumed silica, titanium dioxide, and conductive powder, and B solution is prepared by polyisocyanate, during use, the A and B solution is mixed to be solidified into the coating with heat-resistance, weather-resistance and static-conduction functions. The coating is applied to inner walls of the crude oil, refined oil, and petroleum semi-finished product storage tanks and has the excellent heat-resistance and weather-resistance performance, and its surface specific resistance is in the range from 108 to 1011 omega.
Description
Technical field
The present invention relates to epoxy acrylic polyurethane guide electrostatic coatings, be applicable to crude oil, processed oil and petroleum intermediate product reservoir walls, ultraviolet resistance is aging and resistance toheat good, and surface resistivity scope is 10
8~ 10
11Ω.
Technical background
Petroleum products friction in storage and transport process can produce electrostatic, for preventing oil fire accident, often adopts static conductive coating in reservoir walls.At present conventional static conductive coating mostly is epoxies, due to the fragrant ehter bond contained in epoxy resin see light after easily to degrade chain rupture, so epoxy resin coating Exposure to Sunlight out of doors, easily tarnish, gradually efflorescence, epoxies static conductive coating weather resistance is poor; Again because redix temperature resistant range is generally at 80 ~ 100 DEG C, some crude oil or the temperature of petroleum intermediate product is generally 120 DEG C, the highlyest even reach 180 DEG C, the performance of existing epoxy static conducting coating can not meet on-the-spot needs when the temperature increases, there are some technical deficiencies.
Summary of the invention
The object of this invention is to provide and a kind of there is static electricity conductive anticorrosive paint of better heat-resisting weather resistance and preparation method thereof.
The technical solution used in the present invention: a kind of storage tank heat-resisting weather-proof epoxy acrylic polyurethane guide electrostatic coatings and manufacture method, be made up of A liquid and B liquid, wherein each weight percentages of components of A liquid is: 604 epoxy resin 25% ~ 32%, BS963 acrylic resin 25% ~ 32%, solvent 8% ~ 12%, auxiliary agent 0.8% ~ 1.0%, coupling agent 0.1% ~ 0.3%, siccative 0.015% ~ 0.02%, mica powder 14% ~ 23%, conducting powder 15% ~ 25%, titanium dioxide 1% ~ 3%, aerosil 0.005% ~ 0.01%, each weight percentages of components sum is absolutely, wherein B liquid is polyisocyanates, and the 1 weight part A liquid that consists of during use adds 0.2 ~ 0.3 weight part B liquid.
A kind of storage tank preparation method of heat-resisting weather-proof epoxy acrylic polyurethane guide electrostatic coatings: take 604 epoxy resin of 0.26 part, the BS963 acrylic resin of 0.2508 part by weight, 0.08 part of solvent, 0.008 part of auxiliary agent, 0.001 part of coupling agent, 0.14 part of mica powder, 0.1 part of titanium dioxide, 0.007 part of aerosil, after high speed dispersion 0.1h, pour sand mill grinding 0.5 ~ 1h into, then 0.153 part of conducting powder is added, high speed dispersion 0.25 ~ 0.5h, then the siccative adding 0.0002 part makes A liquid; During use, 1 weight part A liquid and 0.25 weight part B liquid mix and make the heat-resisting weathering resistance static conductive coating of inner wall of petroleum storage tank.
The 30%NaOH aqueous solution of the dihydroxyphenyl propane of 1 weight part and 1.185 weight parts drops in reaction vessel by described 604 epoxy resin preferably preparation method, be heated with stirring to 70 DEG C of dissolvings, filtered while hot, solution proceeds in reaction vessel when being cooled to 47 DEG C and once adds epoxy chloropropane, then slowly heats up 80 DEG C.80 ~ 85 DEG C reaction 1 hour, then 85 ~ 95 DEG C be maintained until softening temperature qualified till.Add water for cooling, bled off by waste liquid water, reusable heat water washing for several times, to neutral and salt-free, finally uses deionized water wash.First in normal pressure dehydration, when liquid temperature rises to more than 115 DEG C, be decompressed to 21.33kPa, be progressively warming up to 135 ~ 140 DEG C.Dewater complete, discharging cools.And then mix with 2 parts by weight solvent according to 3 parts by weight epoxy resin, be made into resin liquid stand-by.The standby epoxy resin relative molecular weight of this legal system is medium, has good consistency with other resin, has again enough hydroxyls to participate in crosslinking reaction.
The dimethylbenzene of 28 weight parts is first put into reaction vessel by described BS963 acrylic resin preferably preparation method, intensification makes system reflux, the dibenzoyl peroxide of the methyl methacrylate of 21 weight parts, the n-butyl acrylate of 19 weight parts, the methacrylic acid of 0.1 weight part, the senecioate hydroxypropyl acrylate of 7.5 weight parts, the vinylbenzene of 12 weight parts and 0.8 weight part is added after insulation 0.5h, at the uniform velocity reaction vessel is added, insulation reaction 3h in 3.5h; Reaction vessel is added, insulation 1.5h after the dibenzoyl peroxide of 0.12 weight part being dissolved with the dimethylbenzene of 6 weight parts; Reaction vessel is added, insulation 2h after the dibenzoyl peroxide of 0.12 weight part being dissolved with the dimethylbenzene of 6 weight parts again, stand-by after cooling.Adopt the acrylic resin prepared of the method to absorb ultraviolet hardly, therefore with cured with isocyanates after paint film there is excellent weather resistance.
Described solvent is the mixed solvent of dimethylbenzene and propyl carbinol.
Described coupling agent is silicone coupling agents.
Described auxiliary agent be BYK110,630,163, Afcona4010 and Afcona5066 mono-kind or mixing.
Described siccative is dibutyl tin laurate or isocaprylic acid zinc.
Described solidifying agent is hexamethylene diisocyanate trimer, and its NCO content is 19.6%, and equivalent is about 214, and density is 1.13g/ml.Adopt this solidifying agent and epoxy resin and acrylic resin to carry out reaction to solidify, NCO group in solidifying agent can carry out crosslinking reaction with the OH group that contains in epoxy resin and acrylic resin, form interpenetrating polymer networks, effectively improve the heat-resisting of paint film and weather resistance.
The present invention's beneficial effect compared with prior art:
Epoxy coating possesses excellent oil resistance and Corrosion Protection, but weather resistance is poor; And the weather resistance of acrylic coating is better, alkaline-resisting and resistance toheat is poor.Therefore, appropriate epoxy resin and acrylic resin are carried out composite, be equipped with suitable polyurethane curing agent, develop a kind of epoxy acrylic polyurethane coating, it has the advantage of epoxy coating and acrylic coating, has the resistance to gentle weather resistance of excellent oil resistant, corrosion resistance nature and excellence, again owing to forming large interpenetrating polymer networks between resin and solidifying agent, increase molecular weight, thus improve the resistance toheat of paint film.The epoxy acrylic polyurethane guide electrostatic coatings weathering resistance of exploitation reaches one-level (1000h), and heatproof 180 DEG C of (24h) coatings are intact, and Surface Resistivity of Coatings scope is 10
8~ 10
11Ω.
Embodiment
Embodiment 1
A kind of storage tank preparation method of heat-resisting weather-proof epoxy acrylic polyurethane guide electrostatic coatings, take 604 epoxy resin of 0.25 part by weight, the BS963 acrylic resin of 0.26 part, 0.08 part of solvent, 0.008 part of auxiliary agent, 0.001 part of coupling agent, 0.14 part of mica powder, 0.1 part of titanium dioxide, 0.007 part of aerosil, after high speed dispersion 0.1h, pour sand mill grinding 0.5 ~ 1h into, then 0.1538 part of conducting powder is added, high speed dispersion 0.25 ~ 0.5h, then the siccative adding 0.0002 part makes A liquid; During use, 1 weight part A liquid and 0.25 weight part B liquid mix and make the heat-resisting weathering resistance static conductive coating of inner wall of petroleum storage tank.
A kind of storage tank of embodiment 1 by heat-resisting weather-proof epoxy acrylic polyurethane guide electrostatic coatings test result in table 1.
Table 1 static conductive coating the performance test results
| Sequence number | Project | Test result | Examination criteria |
| 1 | Surface resistivity, Ω | 8.26×10 8 | GB/T16906 |
| 2 | Ultraviolet resistance is aging, 1000h | One-level | GB16422.3 |
| 3 | Thermotolerance, (180 DEG C, 24h) | Coating is intact | GB1735 |
Embodiment 2
A kind of storage tank preparation method of heat-resisting weather-proof epoxy acrylic polyurethane guide electrostatic coatings, take 604 epoxy resin of 0.24 part, the BS963 acrylic resin of 0.27 part by weight, 0.09 part of solvent, 0.008 part of auxiliary agent, 0.001 part of coupling agent, 0.15 part of mica powder, 0.1 part of titanium dioxide, 0.007 part of aerosil, after high speed dispersion 0.1h, pour sand mill grinding 0.5 ~ 1h into, then 0.13382 part of conducting powder is added, high speed dispersion 0.25 ~ 0.5h, then the siccative adding 0.00018 part makes A liquid; During use, 1 weight part A liquid and 0.25 weight part B liquid mix and make the heat-resisting weathering resistance static conductive coating of inner wall of petroleum storage tank.
A kind of storage tank of embodiment 2 by heat-resisting weather-proof epoxy acrylic polyurethane guide electrostatic coatings test result in table 2.
Table 2 static conductive coating the performance test results
| Sequence number | Project | Test result | Examination criteria |
| 1 | Surface resistivity, Ω | 3.48×10 9 | GB/T16906 |
| 2 | Ultraviolet resistance is aging, 1000h | One-level | GB16422.3 |
| 3 | Thermotolerance, (180 DEG C, 24h) | Coating is intact | GB1735 |
Embodiment 3
A kind of storage tank preparation method of heat-resisting weather-proof epoxy acrylic polyurethane guide electrostatic coatings, take 0.24 part of 604 epoxy resin by weight, 0.26 part of BS963 acrylic resin, 0.085 part of solvent, 0.0078 part of auxiliary agent, 0.001 part of coupling agent, 0.15 part of mica powder, 0.1 part of titanium dioxide, 0.006 part of aerosil, after high speed dispersion 0.1h, pour sand mill grinding 0.5 ~ 1h into, then 0.15001 part of conducting powder is added, high speed dispersion 0.25 ~ 0.5h, then the siccative adding 0.00019 part makes A liquid; During use, 1 weight part A liquid and 0.25 weight part B liquid mix and make the heat-resisting weathering resistance static conductive coating of inner wall of petroleum storage tank.
A kind of storage tank of embodiment 3 by heat-resisting weather-proof epoxy acrylic polyurethane guide electrostatic coatings test result in table 3.
Table 3 static conductive coating the performance test results
| Sequence number | Project | Test result | Examination criteria |
| 1 | Surface resistivity, Ω | 9.57×10 8 | GB/T16906 |
| 2 | Ultraviolet resistance is aging, 1000h | One-level | GB16422.3 |
| 3 | Thermotolerance, (180 DEG C, 24h) | Coating is intact | GB1735 |
Claims (5)
1. the heat-resisting weather-proof epoxy acrylic polyurethane guide electrostatic coatings of storage tank, it is characterized in that: be made up of A liquid and B liquid, wherein each weight percentages of components of A liquid is: 604 epoxy resin 20% ~ 30%, BS963 acrylic resin 20% ~ 30%, solvent 8% ~ 12%, auxiliary agent 0.8% ~ 1.0%, coupling agent 0.1% ~ 0.3%, siccative 0.015% ~ 0.02%, mica powder 14% ~ 23%, conducting powder 15% ~ 25%, titanium dioxide 1% ~ 3%, aerosil 0.005% ~ 0.01%; Wherein B liquid is polyisocyanates, and the 1 part of A liquid that consists of during use adds 0.2 ~ 0.3 part of B liquid.
2. the heat-resisting weather-proof epoxy acrylic polyurethane guide electrostatic coatings of a kind of storage tank according to claim 1, it is characterized in that: be made up of A liquid and B liquid, wherein A liquid is 604 epoxy resin 28% by weight, BS963 acrylic resin 29%, solvent 8%, auxiliary agent 0.8%, coupling agent 0.1%, siccative 0.015%, mica powder 14%, conducting powder 19.08%, titanium dioxide 1%, aerosil 0.005%, each weight percentages of components sum is absolutely; Wherein B liquid is polyisocyanates, and the 1 weight part A liquid that consists of during use adds 0.25 weight part B liquid.
3. a storage tank according to claim 1 preparation method of heat-resisting weather-proof epoxy acrylic polyurethane guide electrostatic coatings, it is characterized in that: take 604 epoxy resin of 0.26 part, the BS963 acrylic resin of 0.2508 part by weight, 0.08 part of solvent, 0.008 part of auxiliary agent, 0.001 part of coupling agent, 0.14 part of mica powder, 0.1 part of titanium dioxide, 0.007 part of aerosil, after high speed dispersion 0.1h, pour sand mill grinding 0.5 ~ 1h into, then 0.153 part of conducting powder is added, high speed dispersion 0.25 ~ 0.5h, then the siccative adding 0.0002 part makes A liquid; During use, 1 weight part A liquid and 0.25 weight part B liquid mix and make the heat-resisting weathering resistance static conductive coating of inner wall of petroleum storage tank.
4. method according to claim 3, is characterized in that, the preparation method of described 604 epoxy resin is:
The 30%NaOH aqueous solution of the dihydroxyphenyl propane of 1 weight part and 1.185 weight parts is dropped in reaction vessel, be heated with stirring to 70 DEG C of dissolvings, filtered while hot, solution proceeds in reaction vessel when being cooled to 47 DEG C and once adds epoxy chloropropane, then slowly heat up 80 DEG C, 80 ~ 85 DEG C reaction 1 hour, then 85 ~ 95 DEG C be maintained until softening temperature qualified till, add water for cooling, waste liquid water is bled off, reusable heat water washing for several times, to neutral and salt-free, finally uses deionized water wash; First in normal pressure dehydration, when liquid temperature rises to more than 115 DEG C, be decompressed to 21.33kPa, be progressively warming up to 135 ~ 140 DEG C.Dewater complete, discharging cools.
5. method according to claim 3, is characterized in that, the preparation method of described BS963 acrylic resin is:
First the dimethylbenzene of 28 weight parts is put into reaction vessel, intensification makes system reflux, the dibenzoyl peroxide of the methyl methacrylate of 21 weight parts, the n-butyl acrylate of 19 weight parts, the methacrylic acid of 0.1 weight part, the senecioate hydroxypropyl acrylate of 7.5 weight parts, the vinylbenzene of 12 weight parts and 0.8 weight part is added after insulation 0.5h, at the uniform velocity reaction vessel is added, insulation reaction 3h in 3.5h; Reaction vessel is added, insulation 1.5h after the dibenzoyl peroxide of 0.12 weight part being dissolved with the dimethylbenzene of 6 weight parts; Reaction vessel is added, insulation 2h after the dibenzoyl peroxide of 0.12 weight part being dissolved with the dimethylbenzene of 6 weight parts again, stand-by after cooling.
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|---|---|---|---|---|
| JP2010037481A (en) * | 2008-08-07 | 2010-02-18 | Nippon Paint Co Ltd | Cationic electrodeposition paint composition and cationic electrodeposition coating method |
| US20110256387A1 (en) * | 2008-11-05 | 2011-10-20 | Posco | Resin Composition for Surface Treatment of Steel Sheet and Surface-Treated Steel Sheet Using the Same |
| CN103031035A (en) * | 2012-12-12 | 2013-04-10 | 中国科学院过程工程研究所 | Conductive coating composition |
| CN103224750A (en) * | 2013-05-14 | 2013-07-31 | 江苏山力漆业有限公司 | Static conductive wear-resisting terrace coating and preparation method thereof |
| CN103613974A (en) * | 2008-04-23 | 2014-03-05 | 长兴化学工业股份有限公司 | Coating composition and application thereof |
-
2014
- 2014-09-24 CN CN201410496019.XA patent/CN104212325A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103613974A (en) * | 2008-04-23 | 2014-03-05 | 长兴化学工业股份有限公司 | Coating composition and application thereof |
| JP2010037481A (en) * | 2008-08-07 | 2010-02-18 | Nippon Paint Co Ltd | Cationic electrodeposition paint composition and cationic electrodeposition coating method |
| US20110256387A1 (en) * | 2008-11-05 | 2011-10-20 | Posco | Resin Composition for Surface Treatment of Steel Sheet and Surface-Treated Steel Sheet Using the Same |
| CN103031035A (en) * | 2012-12-12 | 2013-04-10 | 中国科学院过程工程研究所 | Conductive coating composition |
| CN103224750A (en) * | 2013-05-14 | 2013-07-31 | 江苏山力漆业有限公司 | Static conductive wear-resisting terrace coating and preparation method thereof |
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| 官仕龙主编: "《涂料化学与工艺学》", 31 May 2013, 化学工业出版社 * |
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Application publication date: 20141217 |
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