CN115651491A - Corrosion-resistant powder coating and production process thereof - Google Patents
Corrosion-resistant powder coating and production process thereof Download PDFInfo
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- CN115651491A CN115651491A CN202211611867.1A CN202211611867A CN115651491A CN 115651491 A CN115651491 A CN 115651491A CN 202211611867 A CN202211611867 A CN 202211611867A CN 115651491 A CN115651491 A CN 115651491A
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- 239000000843 powder Substances 0.000 title claims abstract description 72
- 238000000576 coating method Methods 0.000 title claims abstract description 42
- 239000011248 coating agent Substances 0.000 title claims abstract description 39
- 230000007797 corrosion Effects 0.000 title claims abstract description 30
- 238000005260 corrosion Methods 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000010445 mica Substances 0.000 claims abstract description 34
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 34
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 30
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 30
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 23
- 239000004917 carbon fiber Substances 0.000 claims abstract description 23
- 239000003822 epoxy resin Substances 0.000 claims abstract description 23
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 239000011347 resin Substances 0.000 claims abstract description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 15
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 15
- 235000013869 carnauba wax Nutrition 0.000 claims abstract description 15
- 239000004203 carnauba wax Substances 0.000 claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 15
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims abstract description 15
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 15
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011787 zinc oxide Substances 0.000 claims abstract description 15
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 13
- 229920005552 sodium lignosulfonate Polymers 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims description 29
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 238000012986 modification Methods 0.000 claims description 9
- 230000004048 modification Effects 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 238000001354 calcination Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 3
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 3
- 230000004913 activation Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 9
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 150000003839 salts Chemical class 0.000 abstract description 7
- 239000007921 spray Substances 0.000 abstract description 7
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 4
- 239000005909 Kieselgur Substances 0.000 abstract 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 4
- 230000003213 activating effect Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 230000002087 whitening effect Effects 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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Abstract
The invention discloses a corrosion-resistant powder coating and a production process thereof, relating to the technical field of coatings and comprising the following raw materials: powdered epoxy resin; a fluorocarbon resin; neopentyl glycol; ceramic powder; nano titanium dioxide; mica powder; diatomaceous earth; carbon fibers; precipitating barium sulfate powder; sodium lignosulfonate; tetrapod-like zinc oxide whiskers; a silica sol; zirconia fibers; mica iron oxide; zinc borate; carnauba wax; and (3) an auxiliary agent. Through the mode, the corrosion-resistant powder coating disclosed by the invention has excellent corrosion resistance, salt spray resistance, impact resistance and adhesive force, and can be better applied to a coating material of a metal substrate.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a corrosion-resistant powder coating and a production process thereof.
Background
The powder material is used as a coating material of a metal substrate, and when the powder material is used, the powder material is firstly sprayed on the surface of a metal workpiece, then the metal workpiece is placed at a low temperature for solidification, and a solidified layer is formed on the surface of the metal workpiece. The mechanical strength of the solidified layer is related to the service life of the metal workpiece. At present, there is a need to further enhance the adhesion, corrosion resistance, salt spray resistance and impact resistance of powder coatings.
Therefore, a corrosion-resistant powder coating and a production process are provided to solve the above problems.
Disclosure of Invention
The invention aims to provide a corrosion-resistant powder coating and a production process thereof, so as to solve the technical problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the corrosion-resistant powder coating comprises the following raw materials in parts by weight:
150-230 parts of powdered epoxy resin;
40 to 55 parts of fluorocarbon resin;
10-15 parts of neopentyl glycol;
5 to 11 parts of ceramic powder;
5 to 10 parts of nano titanium dioxide;
5363 parts of mica powder 3~8;
10-15 parts of diatomite;
5363 parts of carbon fibers 2~5;
5363 parts of precipitated barium sulfate powder 2~8;
5363 parts of sodium lignin sulfonate 4~7;
5 to 10 parts of tetrapod-like zinc oxide whiskers;
10-21 parts of silica sol;
4-10 parts of zirconia fiber;
5363 parts of mica iron oxide 3~9;
6-12 parts of zinc borate;
15-19 parts of carnauba wax;
and 15-26 parts of an auxiliary agent.
Furthermore, the feed comprises the following raw materials in parts by weight:
185.6 to 212.3 portions of powdered epoxy resin;
43.6 to 50.3 parts of fluorocarbon resin;
10.5 to 12.4 portions of neopentyl glycol;
6.8 to 9.6 parts of ceramic powder;
8.4 to 9.2 parts of nano titanium dioxide;
5.1 to 7.2 portions of mica powder;
11.3 to 12.5 parts of diatomite;
4.6 to 4.9 portions of carbon fiber;
3.3 to 6.4 portions of precipitated barium sulfate powder;
5.2 to 6.5 portions of sodium lignosulphonate;
8.8 to 9.4 parts of tetrapod-like zinc oxide whiskers;
10.3 to 13.5 parts of silica sol;
6.1 to 7.6 parts of zirconia fiber;
4.2 to 8.2 parts of mica iron oxide;
10.1 to 11.3 portions of zinc borate;
17.4 to 17.7 parts of carnauba wax;
19.6 to 22.8 parts of an auxiliary agent.
A production process of corrosion-resistant powder coating comprises the following steps:
step one, weighing powdery epoxy resin, fluorocarbon resin, neopentyl glycol, ceramic powder, nano titanium dioxide, mica powder, diatomite, carbon fiber, precipitated barium sulfate powder, sodium lignosulfonate, tetrapod-like zinc oxide whiskers, silica sol, zirconia fiber, mica iron oxide, zinc borate and carnauba wax according to the proportion for later use;
step two, epoxy resin modification: mixing the powdered epoxy resin, neopentyl glycol, sodium lignosulfonate and zinc borate;
step three, fluorocarbon resin modification: mixing fluorocarbon resin, micaceous iron oxide, tetrapod-like zinc oxide whiskers and diatomite;
step four, modifying mica powder: mixing mica powder, ceramic powder, nano titanium dioxide, zirconia fiber and precipitated barium sulfate powder;
step five, coating carbon fibers: mixing carbon fibers with silica sol and carnauba wax;
step six, mixing the modified epoxy resin, the modified fluorocarbon resin, the modified mica powder, the coated carbon fibers and the auxiliary agent;
and seventhly, placing the obtained product in the step for heat preservation for 1 to 2h at the temperature of between 20 ℃ below zero and 10 ℃, and then grinding the obtained product into powder coating.
Further, in the second step, the mixture is stirred and mixed for 2 to 4 hours at 115 to 120 ℃.
Further, in the third step, the mixture is stirred and mixed for 45 to 68min at 185 to 192 ℃.
And in the fourth step, calcining and activating at 380-527 ℃ for 4-8h.
Further, in the fifth step, the mixture is stirred and mixed at 85 to 90 ℃ for 21 to 38min.
Further, in the sixth step, the mixture is stirred and mixed for 3 to 5h at 188 to 190 ℃.
Advantageous effects
The 25-day corrosion resistance test experiment of the corrosion-resistant powder coating prepared by the invention proves that the coating does not crack, bubble, turn white and peel; 1500h salt spray resistance test experiments prove that the coating has no cracking, foaming, whitening and stripping; the shock resistance can reach 78.8cm; the adhesion is 0 grade.
The corrosion-resistant powder coating disclosed by the invention has excellent corrosion resistance, salt spray resistance, impact resistance and adhesive force, and can be better applied to a coating material of a metal substrate.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example 1
The embodiment provides a production process of a corrosion-resistant powder coating, which comprises the following steps:
step one, weighing 150 parts of powdered epoxy resin, 55 parts of fluorocarbon resin, 10 parts of neopentyl glycol, 11 parts of ceramic powder, 5 parts of nano titanium dioxide, 8 parts of mica powder, 10 parts of diatomite, 5 parts of carbon fiber, 2 parts of precipitated barium sulfate powder, 7 parts of sodium lignosulfonate, 5 parts of tetrapod-like zinc oxide whisker, 21 parts of silica sol, 4 parts of zirconium oxide fiber, 9 parts of mica iron oxide, 6 parts of zinc borate, 19 parts of carnauba wax and 15 parts of auxiliary agent according to the proportion; standby;
step two, epoxy resin modification: mixing the powder epoxy resin, neopentyl glycol, sodium lignosulfonate and zinc borate, and stirring and mixing for 4 hours at 115 ℃;
step three, fluorocarbon resin modification: mixing fluorocarbon resin, micaceous iron oxide, tetrapod-like zinc oxide whisker and diatomite, and stirring and mixing for 68min at 185 ℃;
step four, modifying mica powder: mixing mica powder, ceramic powder, nano titanium dioxide, zirconia fiber and precipitated barium sulfate powder, and calcining and activating for 8 hours at 380 ℃;
step five, coating carbon fibers: mixing carbon fiber with silica sol and carnauba wax, stirring and mixing at 85 deg.C for 38min;
step six, mixing the modified epoxy resin, the modified fluorocarbon resin, the modified mica powder, the coated carbon fibers and the auxiliary agent, and stirring and mixing for 5 hours at 188 ℃;
and step seven, placing the obtained product in the step seven at the temperature of minus 20 ℃ for heat preservation for 2 hours, and then grinding the obtained product into powder coating.
Example 2
The embodiment provides a production process of a corrosion-resistant powder coating, which comprises the following steps:
firstly, weighing 230 parts of powdered epoxy resin, 40 parts of fluorocarbon resin, 15 parts of neopentyl glycol, 5 parts of ceramic powder, 10 parts of nano titanium dioxide, 3 parts of mica powder, 15 parts of diatomite, 2 parts of carbon fiber, 8 parts of precipitated barium sulfate powder, 4 parts of sodium lignosulfonate, 10 parts of tetrapod-like zinc oxide whisker, 10 parts of silica sol, 10 parts of zirconia fiber, 3 parts of mica iron oxide, 12 parts of zinc borate, 15 parts of carnauba wax and 26 parts of an auxiliary agent according to the mixture ratio; standby;
step two, epoxy resin modification: mixing the powder epoxy resin, neopentyl glycol, sodium lignosulfonate and zinc borate, and stirring and mixing for 2 hours at 120 ℃;
step three, fluorocarbon resin modification: mixing fluorocarbon resin, micaceous iron oxide, tetrapod-like zinc oxide whisker and diatomite, and stirring and mixing for 45min at 192 ℃;
step four, modifying mica powder: mixing mica powder, ceramic powder, nano titanium dioxide, zirconia fiber and precipitated barium sulfate powder, and calcining and activating at 527 ℃ for 4 hours;
step five, coating carbon fibers: mixing carbon fiber with silica sol and carnauba wax, stirring and mixing at 90 deg.C for 21min;
step six, mixing the modified epoxy resin, the modified fluorocarbon resin, the modified mica powder, the coated carbon fibers and the auxiliary agent, and stirring and mixing for 3 hours at 190 ℃;
and step seven, preserving the heat of the obtained product at 10 ℃ for 1h, and then grinding the product into powder coating.
Example 3
Different from the embodiment 1, in the first step: 5363 parts of powdered epoxy resin 185.6 parts, 50.3 parts of fluorocarbon resin, 10.5 parts of neopentyl glycol, 9.6 parts of ceramic powder, 8.4 parts of nano titanium dioxide, 7.2 parts of mica powder, 11.3 parts of diatomite, 4.9 parts of carbon fiber, 3.3 parts of precipitated barium sulfate powder, 6.5 parts of sodium lignosulfonate, 8.8 parts of tetrapod-like zinc oxide whisker, 13.5 parts of silica sol, 6.1 parts of zirconium oxide fiber, 8.2 parts of mica iron oxide, 10.1 parts of zinc borate, 17.7 parts of carnauba wax and 19.6 parts of auxiliary agent.
Example 4
Different from the embodiment 2, in the first step: 212.3 parts of powder epoxy resin, 43.6 parts of fluorocarbon resin, 12.4 parts of neopentyl glycol, 6.8 parts of ceramic powder, 9.2 parts of nano titanium dioxide, 5.1 parts of mica powder, 12.5 parts of diatomite, 4.6 parts of carbon fiber, 6.4 parts of precipitated barium sulfate powder, 5.2 parts of sodium lignosulfonate, 9.4 parts of tetrapod-like zinc oxide whisker, 10.3 parts of silica sol, 7.6 parts of zirconia fiber, 4.2 parts of mica iron oxide, 11.3 parts of zinc borate, 17.4 parts of carnauba wax and 22.8 parts of auxiliary agent.
The corrosion-resistant powder coating prepared in example 3 was subjected to a performance test, test standard:
the corrosion resistance GB/T6739-2006;
salt spray resistance GB/T1771-2007;
impact resistance GB/T1732-1993;
the adhesive force GB/T31586.2-2015;
and (3) testing results:
corrosion resistance: the coating does not crack, bubble, turn white and peel after 25 days;
salt spray resistance: 1500h, the coating film has no cracking, foaming, whitening and stripping;
impact resistance: 78.8cm;
adhesion force: and (4) level 0.
The corrosion-resistant powder coating has excellent corrosion resistance, salt spray resistance, impact resistance and adhesive force, and can be well applied to coating materials of metal substrates.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The corrosion-resistant powder coating is characterized by comprising the following raw materials in parts by weight:
150-230 parts of powdered epoxy resin;
40 to 55 parts of fluorocarbon resin;
10-15 parts of neopentyl glycol;
5 to 11 parts of ceramic powder;
5 to 10 parts of nano titanium dioxide;
5363 parts of mica powder 3~8;
10-15 parts of diatomite;
5363 parts of carbon fibers 2~5;
5363 parts of precipitated barium sulfate powder 2~8;
5363 parts of sodium lignin sulfonate 4~7;
5 to 10 parts of tetrapod-like zinc oxide whiskers;
10-21 parts of silica sol;
4-10 parts of zirconia fiber;
5363 parts of mica iron oxide 3~9;
6-12 parts of zinc borate;
15-19 parts of carnauba wax;
and 15-26 parts of an auxiliary agent.
2. The corrosion-resistant powder coating of claim 1, comprising the following raw materials in parts by weight:
185.6 to 212.3 portions of powdered epoxy resin;
43.6 to 50.3 portions of fluorocarbon resin;
10.5 to 12.4 portions of neopentyl glycol;
6.8 to 9.6 parts of ceramic powder;
8.4 to 9.2 parts of nano titanium dioxide;
5.1 to 7.2 portions of mica powder;
11.3 to 12.5 parts of diatomite;
4.6 to 4.9 portions of carbon fiber;
3.3 to 6.4 portions of precipitated barium sulfate powder;
5.2 to 6.5 portions of sodium lignosulphonate;
8.8 to 9.4 parts of tetrapod-like zinc oxide whiskers;
10.3 to 13.5 parts of silica sol;
6.1 to 7.6 parts of zirconia fiber;
4.2 to 8.2 parts of mica iron oxide;
10.1 to 11.3 portions of zinc borate;
17.4 to 17.7 parts of carnauba wax;
and 19.6-22.8 parts of an auxiliary agent.
3. A process for the production of a corrosion resistant powder coating according to claim 1 or 2, comprising the steps of:
step one, weighing powdery epoxy resin, fluorocarbon resin, neopentyl glycol, ceramic powder, nano titanium dioxide, mica powder, diatomite, carbon fiber, precipitated barium sulfate powder, sodium lignosulfonate, tetrapod-like zinc oxide whiskers, silica sol, zirconia fiber, mica iron oxide, zinc borate and carnauba wax according to the proportion for later use;
step two, epoxy resin modification: mixing the powdered epoxy resin, neopentyl glycol, sodium lignosulfonate and zinc borate;
step three, fluorocarbon resin modification: mixing fluorocarbon resin, micaceous iron oxide, tetrapod-like zinc oxide whiskers and diatomite;
step four, modifying mica powder: mixing mica powder, ceramic powder, nano titanium dioxide, zirconia fiber and precipitated barium sulfate powder;
step five, coating carbon fibers: mixing carbon fibers with a silica sol and carnauba wax;
step six, mixing the modified epoxy resin, the modified fluorocarbon resin, the modified mica powder, the coated carbon fibers and the auxiliary agent;
and seventhly, placing the obtained product in the step I at the temperature of between 20 ℃ below zero and 10 ℃ for heat preservation for 1 to 2h, and then grinding the obtained product into powder coating.
4. The process for producing a corrosion-resistant powder coating according to claim 3, wherein in the second step, the mixture is stirred and mixed for 2 to 4 hours at 115 to 120 ℃.
5. The production process of the corrosion-resistant powder coating as claimed in claim 3, wherein the mixing is carried out at 185-192 ℃ for 45-68min.
6. The production process of the corrosion-resistant powder coating as claimed in claim 3, wherein the activation is carried out by calcining at 380 to 527 ℃ for 4 to 8h in the fourth step.
7. The production process of the corrosion-resistant powder coating as claimed in claim 3, wherein in the fifth step, the mixture is stirred and mixed for 21 to 38min at 85 to 90 ℃.
8. The process for producing a corrosion-resistant powder coating according to claim 3, wherein in the sixth step, the mixture is stirred and mixed at 188 to 190 ℃ for 3 to 5h.
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| CN202211611867.1A CN115651491B (en) | 2022-12-15 | 2022-12-15 | Corrosion-resistant powder coating and production process thereof |
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| CN115651491B CN115651491B (en) | 2023-11-14 |
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| Title |
|---|
| 枫轩: "粉末涂料", 热固性树脂, no. 004 * |
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| CN115651491B (en) | 2023-11-14 |
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