CN113214727A - Preparation method of photo-cured diamond resin composite wear-resistant coating - Google Patents
Preparation method of photo-cured diamond resin composite wear-resistant coating Download PDFInfo
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- CN113214727A CN113214727A CN202110518520.1A CN202110518520A CN113214727A CN 113214727 A CN113214727 A CN 113214727A CN 202110518520 A CN202110518520 A CN 202110518520A CN 113214727 A CN113214727 A CN 113214727A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
Abstract
The invention discloses a preparation method of a photo-curing diamond resin composite wear-resistant coating, which is characterized in that the wear-resistant performance of the resin is enhanced through diamond micro powder and silicon carbide micro powder, and then the diamond resin composite wear-resistant coating is prepared. The coating consists of A, B components, wherein the A component consists of epoxy acrylic resin, fluorine-containing epoxy resin, diamond micropowder and silicon carbide filler, and the B component consists of active diluent and photoinitiator. Compared with the traditional resin composite coating, the composite coating has the characteristic of high wear resistance, and can be used for underwater corrosion-prone wear parts in hydraulic equipment, including water turbine blades, ship propeller blades and other fields.
Description
Technical Field
The invention relates to the field of diamond resin composite coatings, in particular to a preparation method of a photo-cured diamond micro powder reinforced resin material wear-resistant composite coating, which is mainly applied to underwater corrosion-prone wear parts in hydraulic equipment, including water turbine blades, ship propeller blades and other fields.
Background
In recent years, with the proposal of 'green industry' mouth number in China, environmental protection performance, economic benefit and production speed of products are more and more emphasized by industrial products. The UV curing technology is rapidly developed in recent years due to the advantages of rapidness, effectiveness, wide adaptability, environmental protection and the like. It has been an important and difficult topic to study how to reduce corrosion and wear of underwater metal material components, and it has become important to develop wear resistant coatings that meet various requirements. The ultraviolet light curing wear-resistant coating is a novel green and environment-friendly coating, and the ultraviolet light curing technology is adopted to enable the organic coating or the organic-inorganic composite coating containing the photoinitiator to generate the photocuring reaction to obtain the wear-resistant coating, so that the performances of the wear resistance and the like of the surface of the attached matrix can be greatly improved.
The wear-resistant coating is formed by coating a layer of more wear-resistant material on the surface of the equipment, so that the wear corrosion of the equipment in a complex environment is reduced, and the wear-resistant coating has the advantages of good wear resistance, large bearing load, long service life, wide application range and the like. According to the difference of preparation processes, the current wear-resistant coatings can be mainly divided into thermal deposition, thermal spraying and chemical bonding wear-resistant coatings. The wear-resistant coating can be divided into metal, inorganic, organic and organic-inorganic composite wear-resistant coatings according to different wear-resistant materials in the coating.
For preparing metal coatings, mainlyThermal deposition and thermal spray techniques, the material comprising elemental metal or an alloy. The inorganic coating material mainly includes inorganic oxide material and non-oxide material. The inorganic coating is mainly deposited on the surface of the base material by two technologies of Physical Vapor Deposition (PVD) and Chemical Vapor Deposition (CVD), the wear-resistant coating has extremely high wear resistance, but the cost is too high, and the coefficient of thermal expansion of the base material and the coating causes insufficient adsorption force, so that the coating is easy to fall off. The organic coating has good bonding force with the base material, but has the problems of no scratch resistance and no wear resistance. For organic-inorganic composite wear-resistant coatings, the inorganic material is mostly in the micron scale, such as micron SiO2、TiO2Micron corundum, and the like. The surface of the coating prepared by uniformly mixing the silicon carbide micro powder and the diamond micro powder in the coating is smoother, and when the coating is abraded, particles can be enriched on the surface of the coating, so that the friction coefficient of the coating is reduced, the damage degree of a base material is reduced, and in addition, the excellent wear resistance of the inorganic nano material can greatly improve the overall wear resistance of the coating. The epoxy acrylate resin is the photocuring oligomer which is most widely applied and used in the prior art, the photocuring speed of the epoxy acrylate resin is the fastest among various oligomers, and a cured coating film has the characteristics of high hardness, good glossiness, excellent corrosion resistance, heat resistance, excellent electrochemistry and the like, and the epoxy acrylate resin is wide in raw material source, low in price and simple in synthesis process, so that the epoxy acrylate resin is one of the photosensitive resins with the largest use amount in the photocuring coating. The special epoxy resin containing fluorine element in the molecular structure of the fluorine-containing epoxy resin comprises 2, 2-bisphenol hexafluoropropane diglycidyl ether, octafluorobiphenyl diglycidyl ether, 1,3- (bis hexafluoro light propyl) benzene diglycidyl ether and the like. Its advantages are low refractivity, low surface tension and friction coefficient, high water resistance and thermal stability, and high wettability to adhered. Therefore, the wear-resistant coating with more excellent performance can be developed by combining the organic material and the inorganic material.
Disclosure of Invention
The purpose of the invention is: provides a preparation method of a photo-cured diamond resin composite wear-resistant coating.
The invention relates to a preparation method of a photo-cured diamond resin composite wear-resistant coating, which is characterized in that the wear-resistant performance of resin is enhanced through diamond micro powder and silicon carbide micro powder, and then the diamond resin composite wear-resistant coating is prepared. The coating consists of A, B components, wherein the A component consists of epoxy acrylate resin, fluorine-containing epoxy resin, diamond micropowder and silicon carbide filler, and the B component consists of active diluent and photoinitiator. The wear-resisting property of the resin is enhanced by utilizing the high wear-resisting property of the diamond, and the method is realized by the following specific technical scheme:
the component A comprises:
30-50% of epoxy acrylate resin;
10 to 30 percent of fluorine-containing epoxy resin;
the diamond micro powder accounts for 32 to 35 percent;
5% -8% of silicon carbide micro powder;
and B component:
49% -69% of reactive diluent;
the photoinitiator is 31-51%.
The diamond micro powder has a particle size of 1-50 μm, the active diluent is butyl acrylate, and the photoinitiator is benzoin ethyl ether.
In a preferred experimental scheme, when the high-wear-resistance coating is used, the mass ratio of the component A to the component B is A: b = 6.5: 1-4.5: 1.
the preparation steps of the photo-cured diamond resin composite wear-resistant coating are as follows:
step 1: weighing epoxy acrylate, fluorine-containing epoxy resin, diamond micro powder, silicon carbide micro powder, an active diluent and a photoinitiator in sequence; the granularity of the diamond micro powder is 1-50 mu m, and the granularity of the silicon carbide micro powder is 1-5 mu m.
Step 2: a, B the two components are respectively poured into different mixers in sequence according to the mixture ratio (except for diamond micro powder and silicon carbide micro powder), the whole process is stirred at high speed, the rotating speed is 1200r/min, and the stirring time is 20 min.
And step 3: slowly adding the silicon carbide micro powder and the diamond micro powder into the A-component stirrer in sequence, stirring at a low speed of 300r/min in the adding process, and stirring at a high speed of 1200r/min after the adding is finished, wherein the stirring time is 50 min.
And 4, step 4: and (3) sequentially adding the processed A, B components into a stirrer according to a ratio, wherein the rotating speed is 300r/min, and the stirring time is 30 min.
And 5: and taking out the coating after stirring is finished, and uniformly dispersing the coating on the base blade through a spin coater.
Step 6: and (3) putting the coated substrate sheet into a UV curing machine, and curing the coating into a film by ultraviolet irradiation.
Compared with the prior art, the invention has the beneficial effects that:
1. the method has the characteristics of easily controlled process parameters, stable quality, strong operability and batch production.
2. According to the invention, the epoxy acrylate and the fluorine-containing epoxy resin are mixed, so that the bonding condition of the resin with diamond and silicon carbide is improved, the wettability with a substrate is improved, and the bonding force between the resin and the surface of the substrate is enhanced.
3. According to the invention, the diamond micro powder and silicon carbide micro powder composite filler is adopted, so that the hardness and wear resistance of the coating are enhanced, and the wear resistance and corrosion resistance of the blade are improved.
Detailed Description
The present invention is further illustrated by the following examples, but the embodiments of the present invention are not limited thereto.
Example 1:
the raw materials are proportioned (all raw materials are proportioned according to mass percent):
the component A comprises:
30% of epoxy acrylate resin;
30% of fluorine-containing epoxy resin;
the diamond micro powder accounts for 35 percent;
5 percent of silicon carbide micro powder.
And B component:
49% of reactive diluent;
the photoinitiator was 51%.
The mass ratio of the component A to the component B of the diamond resin wear-resistant coating is 6.5: 1.
(II) the preparation method comprises the following steps:
1. weighing 26g of epoxy acrylate resin, 26g of fluorine-containing epoxy resin, 30.3g of diamond micro powder, 4.4g of silicon carbide micro powder, 6.5g of active diluent and 6.8g of photoinitiator;
2. respectively pouring A, B two components into different mixers in sequence (except diamond micropowder and silicon carbide micropowder), stirring at high speed of 1200r/min for 20 min;
3. slowly adding the silicon carbide micro powder and the diamond micro powder into the A-component stirrer in sequence, stirring at a low speed of 300r/min in the adding process, and stirring at a high speed of 1200r/min after the adding is finished, wherein the stirring time is 50 min;
4. sequentially adding the processed A, B components into a stirrer according to a proportion, wherein the rotating speed is 300r/min, and the stirring time is 30 min;
5. taking out the paint after stirring, and uniformly dispersing the paint on the substrate blade through a spin coater;
6. and (3) putting the coated substrate sheet into a UV curing machine, and curing the coating into a film by ultraviolet irradiation.
By measurement, the shore hardness after the diamond resin was cured to a film was 95.
Example 2:
the raw materials are proportioned (all raw materials are proportioned according to mass percent):
the component A comprises:
50% of epoxy acrylate resin;
10% of fluorine-containing epoxy resin;
the diamond micro powder accounts for 34 percent;
the content of silicon carbide micro powder is 6 percent.
And B component:
69% of reactive diluent;
the photoinitiator was 31%.
The mass ratio of the component A to the component B of the diamond resin wear-resistant coating is 4.5: 1.
(II) the preparation method comprises the following steps:
1. weighing 40.9g of epoxy acrylate resin, 8.2g of fluorine-containing epoxy resin, 27.84g of diamond micro powder, 4.9g of silicon carbide micro powder, 12.52g of active diluent and 5.64g of photoinitiator;
2. respectively pouring A, B two components into different mixers in sequence (except diamond micropowder and silicon carbide micropowder), stirring at high speed of 1200r/min for 20 min;
3. slowly adding the silicon carbide micro powder and the diamond micro powder into the A-component stirrer in sequence, stirring at a low speed of 300r/min in the adding process, and stirring at a high speed of 1200r/min after the adding is finished, wherein the stirring time is 50 min;
4. sequentially adding the processed A, B components into a stirrer according to a proportion, wherein the rotating speed is 300r/min, and the stirring time is 30 min;
5. taking out the paint after stirring, and uniformly dispersing the paint on the substrate blade through a spin coater;
6. and (3) putting the coated substrate sheet into a UV curing machine, and curing the coating into a film by ultraviolet irradiation.
By measurement, the shore hardness after the diamond resin was cured to a film was 93.
Example 3:
the raw materials are proportioned (all raw materials are proportioned according to mass percent):
the component A comprises:
40% of epoxy acrylate resin;
20% of fluorine-containing epoxy resin;
the diamond micro powder is 32 percent;
the content of silicon carbide micro powder is 8 percent.
And B component:
59% of active diluent;
the photoinitiator was 41%.
The mass ratio of the component A to the component B of the diamond resin wear-resistant coating is 5.5: 1.
(II) the preparation method comprises the following steps:
1. weighing 33.85g of epoxy acrylate resin, 16.92g of fluorine-containing epoxy resin, 27.08g of diamond micro powder, 6.77g of silicon carbide micro powder, 9.08g of active diluent and 6.3g of photoinitiator;
2. respectively pouring A, B two components into different mixers in sequence (except diamond micropowder and silicon carbide micropowder), stirring at high speed of 1200r/min for 20 min;
3. slowly adding the silicon carbide micro powder and the diamond micro powder into the A-component stirrer in sequence, stirring at a low speed of 300r/min in the adding process, and stirring at a high speed of 1200r/min after the adding is finished, wherein the stirring time is 50 min;
4. sequentially adding the processed A, B components into a stirrer according to a proportion, wherein the rotating speed is 300r/min, and the stirring time is 30 min;
5. taking out the paint after stirring, and uniformly dispersing the paint on the substrate blade through a spin coater;
6. and (3) putting the coated substrate sheet into a UV curing machine, and curing the coating into a film by ultraviolet irradiation.
By measurement, the shore hardness after the diamond resin was cured to a film was 90.
According to the invention, the diamond resin coating with high wear resistance can be prepared in batches at high efficiency, the bonding condition of the resin, diamond and silicon carbide is improved by mixing the epoxy acrylate and the fluorine-containing epoxy resin, the wettability of the resin and a substrate is improved, the bonding force of the resin and the surface of the substrate is enhanced, and the diamond resin coating with high wear resistance is obtained.
Claims (4)
1. The photo-cured diamond resin composite wear-resistant coating is characterized in that:
the wear-resistant resin composite wear-resistant coating is prepared by enhancing the wear-resistant performance of resin through diamond micro powder and silicon carbide micro powder, and comprises A, B components, wherein the A component comprises 30-50% by mass of epoxy acrylic resin, 10-30% by mass of fluorine-containing epoxy resin, 32-35% by mass of diamond micro powder, 5-8% by mass of silicon carbide filler, 49-69% by mass of B component active diluent and 31-51% by mass of photoinitiator, the A, B components are respectively added into different stirring machines to be uniformly stirred, and then the A component and the B component are mixed according to the mass ratio of A: b = 6.5: 1-4.5: 1, uniformly mixing and coating on a substrate blade, and curing the substrate by ultraviolet light to cure the diamond resin coating on the surface of the substrate into a coating.
2. The diamond resin abrasion resistant coating according to claim 1, wherein:
the component A comprises 30-50% of epoxy acrylic resin, 10-30% of fluorine-containing epoxy resin, 32-35% of diamond micropowder, 5-8% of silicon carbide filler, 49-69% of active diluent and 31-51% of photoinitiator by mass percent.
3. The method of claim 1, wherein:
when the high-wear-resistance coating is used, the component A and the component B are mixed according to the mass ratio of A: b = 6.5: 1-4.5: 1.
4. the preparation method according to claim 1, comprising the following steps:
(1) weighing epoxy acrylate, fluorine-containing epoxy resin, diamond micro powder, silicon carbide micro powder, an active diluent and a photoinitiator in sequence; the granularity of the diamond micro powder is 1-50 mu m, and the granularity of the silicon carbide micro powder is 1-5 mu m;
(2) a, B the two components are respectively poured into different mixers in sequence according to the mixture ratio (except for diamond micro powder and silicon carbide micro powder), the whole process is stirred at high speed, the rotating speed is 1200r/min, and the stirring time is 20 min;
(3) slowly adding the silicon carbide micro powder and the diamond micro powder into the A-component stirrer in sequence, stirring at a low speed of 300r/min in the adding process, and stirring at a high speed of 1200r/min after the adding is finished, wherein the stirring time is 50 min;
(4) sequentially adding the processed A, B components into a stirrer according to a proportion, wherein the rotating speed is 300r/min, and the stirring time is 30 min;
(5) taking out the paint after stirring, and uniformly dispersing the paint on the substrate blade through a spin coater;
(6) and (3) putting the coated substrate sheet into a UV curing machine, and curing the coating into a film by ultraviolet irradiation.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114836067A (en) * | 2022-03-03 | 2022-08-02 | 柘城惠丰钻石科技股份有限公司 | Application of diamond micropowder as pigment in painting field |
| CN116120098A (en) * | 2022-12-29 | 2023-05-16 | 中国科学院长春光学精密机械与物理研究所 | Diamond/silicon carbide-silicon carbide coating, composite material and preparation method thereof |
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Application publication date: 20210806 |