CN117777805A - Method for baking paint on surface of hardware - Google Patents
Method for baking paint on surface of hardware Download PDFInfo
- Publication number
- CN117777805A CN117777805A CN202311803836.0A CN202311803836A CN117777805A CN 117777805 A CN117777805 A CN 117777805A CN 202311803836 A CN202311803836 A CN 202311803836A CN 117777805 A CN117777805 A CN 117777805A
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- Prior art keywords
- hardware
- parts
- baking
- baking varnish
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000003973 paint Substances 0.000 title claims description 29
- 239000002966 varnish Substances 0.000 claims abstract description 45
- 238000005260 corrosion Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002270 dispersing agent Substances 0.000 claims abstract description 11
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims abstract description 10
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 10
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims abstract description 9
- 230000001070 adhesive effect Effects 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 claims abstract description 9
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims abstract description 5
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 5
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims abstract description 5
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000839 emulsion Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 230000003213 activating effect Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000010422 painting Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000012459 cleaning agent Substances 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000003618 dip coating Methods 0.000 claims description 3
- 238000007590 electrostatic spraying Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000005002 finish coating Substances 0.000 claims description 3
- 238000009775 high-speed stirring Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000008213 purified water Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 125000000129 anionic group Chemical group 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 150000002902 organometallic compounds Chemical group 0.000 claims description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 2
- 239000013530 defoamer Substances 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 12
- 238000005299 abrasion Methods 0.000 abstract description 9
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 8
- 238000011056 performance test Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of hardware processing, and discloses a hardware surface baking finish method, which comprises the following components in parts by weight: 10-15 parts of methyl acrylate, 8-12 parts of ethyl methacrylate, 5-10 parts of acrylonitrile, 6-11 parts of hydroxyethyl acrylate, 5-10 parts of butyl methacrylate, 18-23 parts of epoxy acrylate resin, 1-3 parts of vinyl trimethoxy silane, 10-15 parts of a water-based dispersing agent and 20-25 parts of an environment-friendly solvent. The surface baking varnish method can obtain excellent adhesive force between the baking varnish layer and the base material, and ensures that the baking varnish layer is not easy to peel off or fall off. And excellent corrosion resistance can be provided, so that the hardware can maintain the surface in good condition under severe environment, and the service life is prolonged. Meanwhile, the wear-resistant metal fitting can be endowed with excellent wear resistance, so that the wear-resistant metal fitting can withstand long-term use and friction without abrasion. The quality and the reliability of hardware are improved, so that the hardware can meet stricter engineering requirements and the competitiveness of the whole product is improved.
Description
Technical Field
The invention relates to the technical field of hardware processing, in particular to a method for baking paint on the surface of hardware.
Background
Hardware is an indispensable component in the fields of engineering machinery, automobiles, furniture and the like, and is required to have good appearance quality, corrosion resistance and wear resistance while ensuring the functionality. However, the traditional method for baking paint on the surface of hardware has some limitations, such as poor adhesion of a baked paint layer, poor corrosion resistance, insufficient wear resistance and the like, and the problems may cause the conditions of paint removal, rust, abrasion and the like in the use process of the product, thereby influencing the service life and appearance effect of the product.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a hardware surface baking varnish method, which improves the adhesive force, corrosion resistance and wear resistance of a baking varnish layer and improves the quality and reliability of products.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the hardware surface baking paint comprises the following components in parts by weight:
10-15 parts of methyl acrylate which is used as a base resin to provide the basic structure and chemical resistance of a paint film;
8-12 parts of ethyl methacrylate, which is used for improving the adhesive force and weather resistance of a paint film;
5-10 parts of acrylonitrile, so that the wear resistance and chemical resistance of a paint film are enhanced;
6-11 parts of hydroxyethyl acrylate, which provides flexibility and impact resistance of a paint film;
5-10 parts of butyl methacrylate, which is used for increasing the hardness and wear resistance of a paint film;
18-23 parts of epoxy acrylate resin which is taken as a main curing agent and provides the hardness and chemical resistance of a paint film;
1-3 parts of vinyl trimethoxy silane, so that the adhesive force and weather resistance of a paint film are improved;
10-15 parts of an aqueous dispersing agent for dispersing resin and other solid components to form a stable emulsion;
20-25 parts of environment-friendly solvent for adjusting the viscosity and leveling property of the paint and having environment-friendly property.
Preferably, the environmentally friendly solvent is selected from water, alcohols or mixtures thereof to reduce environmental impact.
Preferably, the aqueous dispersant is a nonionic or anionic dispersant to ensure the stability of the emulsion.
Preferably, the epoxy acrylate resin is a difunctional or polyfunctional epoxy acrylate resin to enhance the performance and durability of the paint film.
Preferably, the preparation method of the baking varnish comprises the following steps:
a) Mixing methyl acrylate, ethyl methacrylate, acrylonitrile, hydroxyethyl acrylate, butyl methacrylate and epoxy acrylate resin according to parts by weight to obtain a prepolymer mixture; this step is intended to mix all the resin and monomer in preparation for the subsequent reaction.
b) And slowly dropwise adding vinyl trimethoxy silane into the prepolymer mixture, and stirring uniformly to form a modified prepolymer, so that the adhesive force and weather resistance of a paint film are improved.
c) The modified prepolymer is heated to 60-80 ℃ and maintained at that temperature for 1-2 hours to promote the crosslinking reaction and increase the hardness and chemical resistance of the paint film.
d) The aqueous dispersing agent is added into the modified prepolymer, and the mixture is uniformly dispersed through high-speed stirring to form stable emulsion, so that uniform coating is provided for subsequent coating.
e) And gradually adding the environment-friendly solvent into the emulsion, and uniformly mixing the emulsion by slowly dripping the environment-friendly solvent under low-speed stirring so as to adjust the viscosity and leveling property of the coating, thereby ensuring the coating quality.
f) Specific catalysts and auxiliary agents are added into the emulsion to adjust the curing time and the performance of the paint, so that the curing time and the performance of the paint are adjusted, and the durability and the attractiveness of a paint film are improved.
g) And filtering and defoaming to obtain the final baking finish for the surface of the hardware, which is used for coating the hardware.
Preferably, the catalyst is an organometallic compound in an amount of 0.1 to 0.5% by weight based on the total weight of the prepolymer mixture, to ensure the curing effect of the paint film.
Preferably, the auxiliary agent comprises 0.1-1 part by weight, 0.05-0.3 part by weight and 0.1-0.5 part by weight of a leveling agent, a defoaming agent and an ultraviolet absorber, so as to improve the surface quality and durability of a paint film.
The invention also provides a hardware surface baking finish method, which comprises the following steps:
surface treatment: firstly removing an oxide layer and impurities on the surface of the hardware through surface polishing equipment, then using an alkaline or acidic cleaning agent to carry out chemical cleaning, and finally washing with purified water to ensure that the surface of the hardware is clean, free of greasy dirt and free of water stains;
surface activation: spraying or soaking an activating solution containing active metal salt on the surface of the hardware to improve the adhesive force of baking varnish, controlling the activating time to be 1-5 minutes, and then washing with deionized water and drying;
primer treatment: applying a layer of anti-corrosion primer to the treated hardware by electrostatic spraying or dip coating, and then baking for 20-30 minutes in a drying room at 70-90 ℃ to form a uniform primer layer;
baking finish coating: the baking varnish is uniformly sprayed on the primed hardware by a high-precision automatic spray gun, and the spraying thickness is controlled to be 20-30 mu m;
baking varnish and curing: and (3) sending the coated hardware into a drying room, and baking for 30-60 minutes at 120-150 ℃ to fully crosslink and solidify the baking varnish layer to form a hard and durable surface protection layer.
The invention provides a method for baking paint on the surface of hardware. The beneficial effects are as follows:
the surface baking varnish method can obtain excellent adhesive force between the baking varnish layer and the base material, and ensures that the baking varnish layer is not easy to peel off or fall off. And excellent corrosion resistance can be provided, so that the hardware can maintain the surface in good condition under severe environment, and the service life is prolonged. Meanwhile, the wear-resistant metal fitting can be endowed with excellent wear resistance, so that the wear-resistant metal fitting can withstand long-term use and friction without abrasion. The quality and the reliability of hardware are improved, so that the hardware can meet stricter engineering requirements and the competitiveness of the whole product is improved.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, 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.
Example 1:
the embodiment of the invention provides a hardware surface baking varnish, which comprises the following components in parts by weight:
the embodiment of the invention provides a preparation method of baking varnish, which comprises the following steps:
a) Mixing methyl acrylate, ethyl methacrylate, acrylonitrile, hydroxyethyl acrylate, butyl methacrylate and epoxy acrylate resin according to parts by weight to obtain a prepolymer mixture;
b) Slowly dropwise adding vinyl trimethoxy silane into the prepolymer mixture while stirring uniformly to form a modified prepolymer;
c) Heating the modified prepolymer to 60-80 ℃ and maintaining the temperature for 1-2 hours to promote the crosslinking reaction;
d) Adding an aqueous dispersing agent into the modified prepolymer, and uniformly dispersing the aqueous dispersing agent by high-speed stirring to form stable emulsion;
e) Gradually adding an environment-friendly solvent into the emulsion, and uniformly mixing the emulsion by slowly dripping the environment-friendly solvent under low-speed stirring so as to adjust the viscosity and leveling property of the coating;
f) Adding a specific catalyst and an auxiliary agent into the emulsion to adjust the curing time and the performance of the coating;
g) And filtering and defoaming to obtain the final baking finish for the surface of the hardware.
The embodiment of the invention provides a method for carrying out surface baking finish on hardware by using the baking finish, which comprises the following steps:
surface treatment: firstly removing an oxide layer and impurities on the surface of the hardware through surface polishing equipment, then using an alkaline or acidic cleaning agent to carry out chemical cleaning, and finally washing with purified water to ensure that the surface of the hardware is clean, free of greasy dirt and free of water stains;
surface activation: spraying or soaking an activating solution containing active metal salt on the surface of the hardware to improve the adhesive force of baking varnish, controlling the activating time to be 1 minute, and then washing with deionized water and drying;
primer treatment: applying a layer of anti-corrosion primer to the treated hardware in an electrostatic spraying or dip-coating mode, and then baking for 20 minutes in a drying room at 70 ℃ to form a uniform primer layer;
baking finish coating: the baking varnish is uniformly sprayed on the primed hardware by a high-precision automatic spray gun, and the spraying thickness is controlled to be 20 mu m;
baking varnish and curing: and (3) conveying the coated hardware into a drying room, and baking for 30 minutes at 120 ℃ to fully crosslink and solidify the baking varnish layer to form a hard and durable surface protection layer.
Example 2:
the embodiment of the present invention is substantially the same as embodiment 1 except that:
the method for carrying out surface baking varnish on the hardware comprises the following steps: the activation time of the surface activation is controlled to be 3 minutes, the primer treatment is baking in a baking room at 80 ℃ for 25 minutes, the spraying thickness is 25 μm, and the baking varnish curing is baking at 135 ℃ for 45 minutes.
Example 3:
the embodiment of the present invention is substantially the same as embodiment 1 except that:
the method for carrying out surface baking varnish on the hardware comprises the following steps: the activation time of the surface activation is controlled to be 5 minutes, the primer treatment is baking in a baking room at 90 ℃ for 30 minutes, the spraying thickness is 30 mu m, and the baking varnish curing is baking at 150 ℃ for 60 minutes.
Comparative example 1:
the surface painting methods in example 1, example 2 and example 3 were compared to verify which method was the best for painting the surface of the hardware.
Each of the samples of examples 1, 2 and 3 was subjected to performance tests, including adhesion, corrosion resistance and abrasion resistance test items.
The performance test steps are as follows:
adhesion test: the adhesion of the paint baking layer to the substrate was tested using a cross-cut method.
Corrosion resistance test: and testing the resistance of the baking paint layer to corrosion by adopting a salt spray test.
Abrasion resistance test: the abrasion resistance of the baked paint layer was tested using a friction test.
Experimental data are shown in table 1:
TABLE 1
It can be seen from table 1 that the example 2 sample exhibited better adhesion, corrosion resistance and abrasion resistance than the example 1 sample and the example 3 sample. Thus, it can be preliminarily inferred that the surface painting method in example 2 is optimal in these respects.
Example 4:
the embodiment of the invention provides a hardware surface baking varnish, which comprises the following components in parts by weight:
the method for preparing the baking varnish is the same as in example 1, and the method for baking varnish on the surface of the hardware by using the baking varnish of this example is the same as in example 2.
Example 5:
the embodiment of the invention provides a hardware surface baking varnish, which comprises the following components in parts by weight:
the method for preparing the baking varnish is the same as in example 1, and the method for baking varnish on the surface of the hardware by using the baking varnish of this example is the same as in example 2.
Example 6:
the embodiment of the invention provides a hardware surface baking varnish, which comprises the following components in parts by weight:
the method for preparing the baking varnish is the same as in example 1, and the method for baking varnish on the surface of the hardware by using the baking varnish of this example is the same as in example 2.
Comparative example 2:
the surface painting methods in examples 4, 5 and 6 were compared to verify which method was best for painting the surface of the hardware.
Each of the samples of examples 4, 5 and 6 was subjected to performance tests, including adhesion, corrosion resistance and abrasion resistance test items.
The performance test procedure was the same as in comparative example 1.
Experimental data are shown in table 2:
from table 2, it can be seen that the example 6 samples perform better than the example 4 samples and the example 5 samples in terms of adhesion, corrosion resistance and wear resistance.
In general, by the surface baking varnish method, excellent adhesion between the baking varnish layer and the substrate can be obtained, and the baking varnish layer is ensured not to be easily peeled off or fall off. And excellent corrosion resistance can be provided, so that the hardware can maintain the surface in good condition under severe environment, and the service life is prolonged. Meanwhile, the wear-resistant metal fitting can be endowed with excellent wear resistance, so that the wear-resistant metal fitting can withstand long-term use and friction without abrasion. The quality and the reliability of hardware are improved, so that the hardware can meet stricter engineering requirements and the competitiveness of the whole product is improved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The hardware surface baking varnish is characterized by comprising the following components in parts by weight:
2. a hardware surface finish according to claim 1 wherein the environmentally friendly solvent is selected from water, alcohols or mixtures thereof.
3. A hardware surface finish according to claim 1 wherein the aqueous dispersant is a nonionic or anionic dispersant.
4. The hardware surface baking varnish of claim 1, wherein the epoxy acrylate resin is a difunctional or multifunctional epoxy acrylate resin.
5. A method of preparing a paint for a surface of a hardware as claimed in any one of claims 1 to 4, comprising the steps of:
a) Mixing methyl acrylate, ethyl methacrylate, acrylonitrile, hydroxyethyl acrylate, butyl methacrylate and epoxy acrylate resin according to parts by weight to obtain a prepolymer mixture;
b) Slowly dropwise adding vinyl trimethoxy silane into the prepolymer mixture while stirring uniformly to form a modified prepolymer;
c) Heating the modified prepolymer to 60-80 ℃ and maintaining the temperature for 1-2 hours to promote the crosslinking reaction;
d) Adding an aqueous dispersing agent into the modified prepolymer, and uniformly dispersing the aqueous dispersing agent by high-speed stirring to form stable emulsion;
e) Gradually adding an environment-friendly solvent into the emulsion, and uniformly mixing the emulsion by slowly dripping the environment-friendly solvent under low-speed stirring so as to adjust the viscosity and leveling property of the coating;
f) Adding a specific catalyst and an auxiliary agent into the emulsion to adjust the curing time and the performance of the coating;
g) And filtering and defoaming to obtain the final baking finish for the surface of the hardware.
6. The hardware surface finish of claim 5 wherein said catalyst is an organometallic compound in an amount of 0.1 to 0.5% by weight of the total prepolymer mixture.
7. The hardware surface baking varnish according to claim 5, wherein the auxiliary agent comprises 0.1-1 part, 0.05-0.3 part and 0.1-0.5 part by weight of leveling agent, defoamer and ultraviolet absorber.
8. A method of painting a surface of a hardware using a paint as defined in any one of claims 1 to 4, comprising the steps of:
surface treatment: firstly removing an oxide layer and impurities on the surface of the hardware through surface polishing equipment, then using an alkaline or acidic cleaning agent to carry out chemical cleaning, and finally washing with purified water to ensure that the surface of the hardware is clean, free of greasy dirt and free of water stains;
surface activation: spraying or soaking an activating solution containing active metal salt on the surface of the hardware to improve the adhesive force of baking varnish, controlling the activating time to be 1-5 minutes, and then washing with deionized water and drying;
primer treatment: applying a layer of anti-corrosion primer to the treated hardware by electrostatic spraying or dip coating, and then baking for 20-30 minutes in a drying room at 70-90 ℃ to form a uniform primer layer;
baking finish coating: the baking varnish is uniformly sprayed on the primed hardware by a high-precision automatic spray gun, and the spraying thickness is controlled to be 20-30 mu m;
baking varnish and curing: and (3) sending the coated hardware into a drying room, and baking for 30-60 minutes at 120-150 ℃ to fully crosslink and solidify the baking varnish layer to form a hard and durable surface protection layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311803836.0A CN117777805A (en) | 2023-12-26 | 2023-12-26 | Method for baking paint on surface of hardware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311803836.0A CN117777805A (en) | 2023-12-26 | 2023-12-26 | Method for baking paint on surface of hardware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117777805A true CN117777805A (en) | 2024-03-29 |
Family
ID=90401206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311803836.0A Pending CN117777805A (en) | 2023-12-26 | 2023-12-26 | Method for baking paint on surface of hardware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117777805A (en) |
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2023
- 2023-12-26 CN CN202311803836.0A patent/CN117777805A/en active Pending
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