CN115651491B - Corrosion-resistant powder coating and production process thereof - Google Patents
Corrosion-resistant powder coating and production process thereof Download PDFInfo
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- CN115651491B CN115651491B CN202211611867.1A CN202211611867A CN115651491B CN 115651491 B CN115651491 B CN 115651491B CN 202211611867 A CN202211611867 A CN 202211611867A CN 115651491 B CN115651491 B CN 115651491B
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- 239000000843 powder Substances 0.000 title claims abstract description 83
- 238000000576 coating method Methods 0.000 title claims abstract description 36
- 239000011248 coating agent Substances 0.000 title claims abstract description 34
- 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 10
- 239000010445 mica Substances 0.000 claims abstract description 38
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 38
- 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 30
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 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
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-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
- 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 abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims description 31
- 238000003756 stirring Methods 0.000 claims description 11
- 238000012986 modification Methods 0.000 claims description 9
- 230000004048 modification Effects 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 238000001354 calcination Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 229920005552 sodium lignosulfonate Polymers 0.000 claims description 2
- 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
- 239000000758 substrate Substances 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 239000005909 Kieselgur Substances 0.000 abstract 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 238000005336 cracking Methods 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000002087 whitening effect Effects 0.000 description 4
- 230000003213 activating effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- 239000003973 paint Substances 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
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- Paints Or Removers (AREA)
Abstract
The invention discloses a corrosion-resistant powder coating and a production process thereof, which relate to the technical field of coatings and comprise the following raw materials: a powder epoxy resin; a fluorocarbon resin; neopentyl glycol; ceramic powder; nano titanium dioxide; mica powder; diatomaceous earth; a carbon fiber; precipitating barium sulfate powder; sodium lignin sulfonate; four needle-shaped zinc oxide whisker; a silica sol; zirconia fibers; mica iron oxide; zinc borate; carnauba wax; and (5) 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 coating materials of metal substrates.
Description
Technical Field
The invention relates to the technical field of paint, in particular to a corrosion-resistant powder paint and a production process thereof.
Background
When the powder material is used as a coating material of a metal substrate, the powder material is sprayed on the surface of a metal workpiece, and then the metal workpiece is cured at a low temperature to form a cured layer on the surface of the metal workpiece. The mechanical strength of the cured 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 problems.
Disclosure of Invention
The invention aims to provide a corrosion-resistant powder coating and a production process thereof, which are used for solving the technical problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the corrosion-resistant powder coating comprises the following raw materials in parts by weight:
150-230 parts of powder epoxy resin;
40-55 parts of fluorocarbon resin;
10-15 parts of neopentyl glycol;
5-11 parts of ceramic powder;
5-10 parts of nano titanium dioxide;
3-8 parts of mica powder;
10-15 parts of diatomite;
2-5 parts of carbon fiber;
2-8 parts of precipitated barium sulfate powder;
4-7 parts of sodium lignin sulfonate;
5-10 parts of tetrapod-like zinc oxide whisker;
10-21 parts of silica sol;
4-10 parts of zirconia fiber;
3-9 parts of mica iron oxide;
6-12 parts of zinc borate;
15-19 parts of carnauba wax;
15-26 parts of auxiliary agent.
Further, the material comprises the following raw materials in parts by weight:
185.6-212.3 parts of powder epoxy resin;
43.6-50.3 parts of fluorocarbon resin;
10.5-12.4 parts of neopentyl glycol;
6.8-9.6 parts of ceramic powder;
8.4-9.2 parts of nano titanium dioxide;
5.1-7.2 parts of mica powder;
11.3-12.5 parts of diatomite;
4.6-4.9 parts of carbon fiber;
3.3-6.4 parts of precipitated barium sulfate powder;
5.2-6.5 parts of sodium lignin sulfonate;
8.8-9.4 parts of tetrapod-like zinc oxide whisker;
10.3-13.5 parts of silica sol;
6.1-7.6 parts of zirconia fiber;
4.2-8.2 parts of mica iron oxide;
10.1-11.3 parts of zinc borate;
17.4-17.7 parts of carnauba wax;
19.6-22.8 parts of auxiliary agent.
A production process of corrosion-resistant powder coating comprises the following steps:
respectively weighing powder 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 whisker, silica sol, zirconia fiber, mica iron oxide, zinc borate and carnauba wax according to the above proportion for later use;
step two, epoxy resin modification: mixing powder epoxy resin, neopentyl glycol, sodium lignin sulfonate and zinc borate;
step three, fluorocarbon resin modification: mixing fluorocarbon resin, mica iron oxide, tetrapod-like zinc oxide whisker and diatomite;
fourth, modifying mica powder: mixing mica powder, ceramic powder, nano titanium dioxide, zirconia fiber and precipitated barium sulfate powder;
step five, carbon fiber cladding: mixing carbon fiber with silica sol and carnauba wax;
step six, mixing the modified epoxy resin, the modified fluorocarbon resin, the modified mica powder, the coated carbon fiber and the auxiliary agent;
and seventhly, placing the product obtained in the previous step at the temperature of-20-10 ℃ for heat preservation for 1-2 hours, and then grinding the product into the powder coating.
Further, in the second step, stirring and mixing are carried out for 2-4 hours at the temperature of 115-120 ℃.
In the third step, the mixture is stirred and mixed for 45 to 68 minutes at 185 to 192 ℃.
In the fourth step, the mixture is calcined and activated for 4 to 8 hours at 380 to 527 ℃.
In the fifth step, the mixture is stirred and mixed for 21 to 38 minutes at a temperature of 85 to 90 ℃.
In the sixth step, the mixture is stirred and mixed for 3 to 5 hours at the temperature of 188 to 190 ℃.
Advantageous effects
The corrosion resistance test experiment of the corrosion-resistant powder coating for 25 days proves that the coating film has no cracking, foaming, whitening and stripping; 1500h salt spray resistance test experiments prove that the coating film has no cracking, foaming, whitening and stripping; the shock resistance can reach 78.8cm; the adhesion was of grade 0.
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 coating materials of metal substrates.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is further described below with reference to examples.
Example 1
The embodiment provides a production process of corrosion-resistant powder coating, which comprises the following steps:
respectively weighing 150 parts of powder 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 lignin sulfonate, 5 parts of tetrapod-like zinc oxide whisker, 21 parts of silica sol, 4 parts of zirconia fiber, 9 parts of mica ferric oxide, 6 parts of zinc borate, 19 parts of carnauba wax and 15 parts of auxiliary agent according to the above proportion; standby;
step two, epoxy resin modification: mixing the powder epoxy resin, neopentyl glycol, sodium lignin sulfonate and zinc borate, and stirring and mixing for 4 hours at 115 ℃;
step three, fluorocarbon resin modification: mixing fluorocarbon resin, mica iron oxide, tetrapod-like zinc oxide whisker and diatomite, and stirring and mixing for 68min at 185 ℃;
fourth, 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, carbon fiber cladding: mixing carbon fiber with silica sol and carnauba wax, stirring and mixing at 85deg.C for 38min;
step six, mixing the modified epoxy resin, the modified fluorocarbon resin, the modified mica powder, the coated carbon fiber and the auxiliary agent, and stirring and mixing for 5 hours at 188 ℃;
and seventhly, placing the obtained product in the step II at the temperature of minus 20 ℃ for 2 hours, and grinding the obtained product into powder coating.
Example 2
The embodiment provides a production process of corrosion-resistant powder coating, which comprises the following steps:
according to the above proportion, respectively weighing 230 parts of powder 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 lignin sulfonate, 10 parts of tetrapod-like zinc oxide whisker, 10 parts of silica sol, 10 parts of zirconia fiber, 3 parts of mica ferric oxide, 12 parts of zinc borate, 15 parts of carnauba wax and 26 parts of auxiliary agent; standby;
step two, epoxy resin modification: mixing the powder epoxy resin, neopentyl glycol, sodium lignin sulfonate and zinc borate, and stirring and mixing for 2 hours at 120 ℃;
step three, fluorocarbon resin modification: mixing fluorocarbon resin, mica iron oxide, tetrapod-like zinc oxide whisker and diatomite, and stirring and mixing for 45min at 192 ℃;
fourth, modifying mica powder: mixing mica powder, ceramic powder, nano titanium dioxide, zirconia fiber and precipitated barium sulfate powder, and calcining and activating for 4 hours at 527 ℃;
step five, carbon fiber cladding: mixing carbon fiber with silica sol and carnauba wax, stirring and mixing at 90deg.C for 21min;
step six, mixing the modified epoxy resin, the modified fluorocarbon resin, the modified mica powder, the coated carbon fiber and the auxiliary agent, and stirring and mixing for 3 hours at 190 ℃;
and seventhly, placing the obtained product in the step of heat preservation for 1h at the temperature of 10 ℃, and then grinding the obtained product into powder coating.
Example 3
Unlike example 1, in step one: 185.6 parts of powder epoxy resin, 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 kieselguhr, 4.9 parts of carbon fiber, 3.3 parts of precipitated barium sulfate powder, 6.5 parts of sodium lignin sulfonate, 8.8 parts of tetrapod-like zinc oxide whisker, 13.5 parts of silica sol, 6.1 parts of zirconia 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
Unlike example 2, in step one: 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 lignin sulfonate, 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.
Performance test was performed on the corrosion-resistant powder coating prepared in example 3, test standard:
corrosion resistance GB/T6739-2006;
salt spray resistance GB/T1771-2007;
impact resistance GB/T1732-1993;
adhesion GB/T31586.2-2015;
test results:
corrosion resistance: the coating film has no cracking, foaming, whitening and stripping after 25 days;
salt spray resistance: 1500h, the coating film has no cracking, foaming, whitening and stripping;
impact resistance: 78.8cm;
adhesion force: level 0.
It can be seen that the corrosion-resistant powder coating provided by the invention has excellent corrosion resistance, salt spray resistance, impact resistance and adhesive force, and can be better applied to coating materials of metal substrates.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, 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 present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 only to assist in the explanation of the invention. 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 understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. The corrosion-resistant powder coating is characterized by being prepared from the following raw materials in parts by weight:
150-230 parts of powder epoxy resin;
40-55 parts of fluorocarbon resin;
10-15 parts of neopentyl glycol;
5-11 parts of ceramic powder;
5-10 parts of nano titanium dioxide;
3-8 parts of mica powder;
10-15 parts of diatomite;
2-5 parts of carbon fiber;
2-8 parts of precipitated barium sulfate powder;
4-7 parts of sodium lignin sulfonate;
5-10 parts of tetrapod-like zinc oxide whisker;
10-21 parts of silica sol;
4-10 parts of zirconia fiber;
3-9 parts of mica iron oxide;
6-12 parts of zinc borate;
15-19 parts of carnauba wax;
15-26 parts of an auxiliary agent;
the production process of the corrosion-resistant powder coating comprises the following steps:
respectively weighing powder 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 whisker, silica sol, zirconia fiber, mica iron oxide, zinc borate and carnauba wax according to the above proportion for later use;
step two, epoxy resin modification: mixing powder epoxy resin, neopentyl glycol, sodium lignin sulfonate and zinc borate;
step three, fluorocarbon resin modification: mixing fluorocarbon resin, mica iron oxide, tetrapod-like zinc oxide whisker and diatomite;
fourth, modifying mica powder: mixing mica powder, ceramic powder, nano titanium dioxide, zirconia fiber and precipitated barium sulfate powder;
step five, carbon fiber cladding: mixing carbon fiber with silica sol and carnauba wax;
step six, mixing the modified epoxy resin, the modified fluorocarbon resin, the modified mica powder, the coated carbon fiber and the auxiliary agent;
and seventhly, placing the product obtained in the previous step at the temperature of-20-10 ℃ for heat preservation for 1-2 hours, and then grinding the product into the powder coating.
2. The corrosion-resistant powder coating according to claim 1, which is prepared from the following raw materials in parts by weight:
185.6-212.3 parts of powder epoxy resin;
43.6-50.3 parts of fluorocarbon resin;
10.5-12.4 parts of neopentyl glycol;
6.8-9.6 parts of ceramic powder;
8.4-9.2 parts of nano titanium dioxide;
5.1-7.2 parts of mica powder;
11.3-12.5 parts of diatomite;
4.6-4.9 parts of carbon fiber;
3.3-6.4 parts of precipitated barium sulfate powder;
5.2-6.5 parts of sodium lignin sulfonate;
8.8-9.4 parts of tetrapod-like zinc oxide whisker;
10.3-13.5 parts of silica sol;
6.1-7.6 parts of zirconia fiber;
4.2-8.2 parts of mica iron oxide;
10.1-11.3 parts of zinc borate;
17.4-17.7 parts of carnauba wax;
19.6-22.8 parts of auxiliary agent.
3. The corrosion-resistant powder coating according to claim 1, wherein in the second step, the mixture is stirred and mixed for 2 to 4 hours at 115 to 120 ℃.
4. The corrosion-resistant powder coating according to claim 1, wherein in the third step, stirring and mixing are performed for 45-68 min at 185-192 ℃.
5. The corrosion-resistant powder coating according to claim 1, wherein in the fourth step, the calcination and activation are performed at 380-527 ℃ for 4-8 hours.
6. The corrosion-resistant powder coating according to claim 1, wherein in the fifth step, the mixture is stirred and mixed at 85-90 ℃ for 21-38 min.
7. The corrosion-resistant powder coating according to claim 1, wherein in the sixth step, stirring and mixing are performed at 188-190 ℃ for 3-5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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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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| CN202211611867.1A CN115651491B (en) | 2022-12-15 | 2022-12-15 | Corrosion-resistant powder coating and production process thereof |
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| CN115651491B true CN115651491B (en) | 2023-11-14 |
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| CN115651491A (en) | 2023-01-31 |
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