CN113637383A - Preparation method of polydopamine modified molybdenum disulfide composite epoxy powder coating - Google Patents
Preparation method of polydopamine modified molybdenum disulfide composite epoxy powder coating Download PDFInfo
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- CN113637383A CN113637383A CN202110824997.2A CN202110824997A CN113637383A CN 113637383 A CN113637383 A CN 113637383A CN 202110824997 A CN202110824997 A CN 202110824997A CN 113637383 A CN113637383 A CN 113637383A
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Abstract
The invention is suitable for the technical field of composite epoxy powder coating, and provides a preparation method of polydopamine modified molybdenum disulfide composite epoxy powder coating, which comprises the following steps: adding molybdenum disulfide and absolute ethyl alcohol into a trihydroxymethyl aminomethane solution for ultrasonic treatment, then adding dopamine hydrochloride, centrifuging, freeze-drying and grinding to obtain modified molybdenum disulfide; ball-milling and mixing epoxy resin powder and modified molybdenum disulfide to obtain a pre-dispersion body; and (3) carrying out double-screw melt blending extrusion, cooling tabletting, crushing, sieving and grading on other components in the epoxy powder coating formula and the pre-dispersion to obtain the composite powder coating product. Therefore, the adhesion of the molybdenum disulfide and the epoxy resin powder coating can be enhanced, the barrier effect of the powder coating is enhanced, the possibility of the corrosive medium permeating the coating is reduced, the powder coating is coated on the surface of the magnesium-lithium alloy, the corrosion resistance and the wear resistance of the magnesium-lithium alloy can be improved, and the service life of the magnesium-lithium alloy is prolonged.
Description
Technical Field
The invention relates to the technical field of composite epoxy powder coatings, in particular to a preparation method of a polydopamine modified molybdenum disulfide composite epoxy powder coating.
Background
The magnesium-lithium alloy is used as an ultra-light alloy, and has important application prospects in the fields of automobiles, telecommunications, aerospace and the like due to high specific toughness, excellent ductility, impact resistance, excellent damping coefficient and high-energy particle invasion resistivity. However, the magnesium-lithium alloy has high sensitivity to corrosion, and it is difficult to prevent the continuous corrosion process due to the formation of loose powdery substances on the interface of the decomposition of lithium, so it is necessary to improve the corrosion resistance and wear resistance of the magnesium-lithium alloy, expand the application range thereof, and exert the advantages thereof.
Organic/inorganic hybrid coatings play an important role in the field of metal material protection because of their excellent mechanical properties, corrosion resistance and chemical stability. The organisms reduce the brittleness of the inorganic component, which improves the durability of the coating, while the inorganic component can increase the strength and hardness of the organisms, which results in better wear resistance of the coating.
Among organic coatings, epoxy powder coatings have been developed for their stability in corrosive media, good adhesion strength on metal substrates, thermal properties and environmental protection requirements. In addition, in order to improve the corrosion resistance and wear resistance of the powder coating, it is advantageous to add inorganic nanomaterials having appropriate morphology and structure, excellent thermal and chemical stability, and efficient adhesion to epoxy resin powders.
Molybdenum disulfide has a unique layered structure similar to graphene, in which the internal atoms are covalently bonded, the interlayers are loosely packed vertically, and are bonded together by weak van der waals forces. This particular chemical structure imparts unique morphology and properties to molybdenum disulfide. The covalent bond of the molybdenum disulfide ensures excellent thermal stability and chemical stability, and the molybdenum disulfide as a reinforcing additive enhances the mechanical properties of the powder coating. The two-dimensional planar layered morphology of molybdenum disulfide enhances the barrier effect of the powder coating while also counteracting microcracks in the powder coating. Therefore, the molybdenum disulfide is added into the epoxy resin powder coating, so that the possibility of corrosive media penetrating the coating is reduced, and the corrosion resistance of the powder coating is improved. In addition, the weak van der waals forces between the molybdenum disulfide layers cause the molybdenum disulfide layers to slide easily, which results in excellent lubricity of the molybdenum disulfide. Thus, molybdenum disulfide additives increase the wear resistance of powder coatings, but problems remain with the use of molybdenum disulfide in epoxy powder coatings.
The adhesion of the molybdenum disulfide and the epoxy resin powder coating is poor; in addition, due to the interface effect of molybdenum disulfide, the agglomeration phenomenon of molybdenum disulfide nanosheets is susceptible to influence in the coating, and the phenomenon greatly influences the dispersion of molybdenum disulfide in the coating and damages the realization of the function of molybdenum disulfide.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
Disclosure of Invention
In view of the above-mentioned drawbacks, an object of the present invention is to provide a method for preparing a polydopamine-modified molybdenum disulfide composite epoxy powder coating, wherein polydopamine is used to modify molybdenum disulfide, so as to enhance the adhesion between molybdenum disulfide and an epoxy resin powder coating, enhance the barrier effect of a powder coating, reduce the possibility of corrosive media penetrating into the coating, and coat the powder coating on the surface of a magnesium-lithium alloy, so as to improve the corrosion resistance and wear resistance of the magnesium-lithium alloy and prolong the service life of the magnesium-lithium alloy.
In order to achieve the purpose, the invention provides a preparation method of a polydopamine modified molybdenum disulfide composite epoxy powder coating, which comprises the following steps:
step one, surface modification of nano molybdenum disulfide
Dissolving tris (hydroxymethyl) aminomethane in deionized water, adjusting the pH to 8-8.7, stirring and performing ultrasonic treatment to obtain tris (hydroxymethyl) aminomethane solution;
adding molybdenum disulfide and absolute ethyl alcohol into the trihydroxymethyl aminomethane solution for ultrasonic treatment to obtain a mixed solution I; then weighing dopamine hydrochloride, adding the dopamine hydrochloride into the mixed solution I, and stirring for reaction after ultrasonic treatment; and (3) stopping the reaction, centrifuging, washing with an ethanol water solution to be neutral in the centrifuging process, freeze-drying, and grinding to obtain the modified molybdenum disulfide.
Step two, premixing modified molybdenum disulfide and epoxy resin
Mixing epoxy resin powder and the modified molybdenum disulfide according to a mass ratio of 90-100: 1, and obtaining the pre-dispersion of the modified molybdenum disulfide and the epoxy resin.
Preparation of epoxy resin composite powder coating in step three
Weighing other components in the formula according to the formula of the epoxy powder coating; mixing other components in the epoxy powder coating formula with the pre-dispersion obtained in the second step; and finally obtaining a powder coating product through melt blending extrusion, cooling tabletting, crushing, sieving and grading.
According to the preparation method of the polydopamine modified molybdenum disulfide composite epoxy powder coating, the concentration of the trihydroxymethyl aminomethane solution is 7.5-8.5 g/L.
According to the preparation method of the polydopamine modified molybdenum disulfide composite epoxy powder coating, the mass ratio of the trihydroxymethyl aminomethane to the molybdenum disulfide is 1.1-1.3:1, and the mass ratio of the molybdenum disulfide to the dopamine hydrochloride is 2.3-2.7: 1.
According to the preparation method of the polydopamine modified molybdenum disulfide composite epoxy powder coating, the ball milling mode of the mixture is as follows: and putting the mixture of the modified molybdenum disulfide and the epoxy resin into an agate tank of a ball mill for ball milling.
According to the preparation method of the polydopamine modified molybdenum disulfide composite epoxy powder coating, the amount of the mixture is 1/2 of the capacity of an agate can.
According to the preparation method of the polydopamine modified molybdenum disulfide composite epoxy powder coating, a plurality of impact medium agate balls are further placed in the agate tank, and the agate balls comprise small balls, middle balls and large balls.
According to the preparation method of the polydopamine modified molybdenum disulfide composite epoxy powder coating, the mass ratio of the mixture I to the agate balls is 1: 2.8-4.
According to the preparation method of the polydopamine modified molybdenum disulfide composite epoxy powder coating, the mixture III is subjected to melt blending extrusion in a double-screw extruder, the diameter of a screw is 20mm, and the rotating speed is 35-50 rpm; the double-screw extruder comprises two heating zones, wherein the temperature of the feeding zone is 90-100 ℃, and the temperature of the extrusion section is 105-120 ℃.
According to the preparation method of the polydopamine modified molybdenum disulfide composite epoxy powder coating, the average particle size of the powder coating product is 65-80 mu m.
The invention aims to provide a preparation method of a polydopamine modified molybdenum disulfide composite epoxy powder coating, which can enhance the adhesion of molybdenum disulfide and an epoxy resin powder coating and prevent the agglomeration of molybdenum disulfide nanosheets by modifying molybdenum disulfide with polydopamine. The modified molybdenum disulfide added into the epoxy resin powder coating can improve the dispersibility of the molybdenum disulfide in the epoxy resin powder, so that the thermal stability and the chemical stability of the molybdenum disulfide are more fully expressed in the epoxy resin powder coating, meanwhile, the barrier effect of the powder coating can be enhanced, the possibility of corrosive media penetrating into the coating is reduced, the powder coating is coated on the surface of the magnesium-lithium alloy, the corrosion resistance and the wear resistance of the magnesium-lithium alloy can be improved, and the service life of the magnesium-lithium alloy is prolonged.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a preparation method of polydopamine modified molybdenum disulfide composite epoxy powder coating, which comprises the following steps:
step one, surface modification of nano molybdenum disulfide
Dissolving TRIS (hydroxymethyl) aminomethane (TRIS) in deionized water, adjusting pH to 8-8.7 with dilute hydrochloric acid, stirring, and performing ultrasonic treatment to obtain TRIS (hydroxymethyl) aminomethane solution.
Adding molybdenum disulfide and absolute ethyl alcohol into a trihydroxymethyl aminomethane solution for ultrasonic treatment to obtain a mixed solution I; and then weighing dopamine hydrochloride, adding the dopamine hydrochloride into the mixed solution I, performing ultrasonic treatment, and stirring for reaction. And (3) stopping the reaction, centrifuging, washing with an ethanol water solution to be neutral in the centrifuging process, freeze-drying, and grinding to obtain black solid powder modified molybdenum disulfide.
The concentration of the tris solution is 7.5-8.5 g/L. The concentration of the dilute hydrochloric acid is 1 mol/L. The stirring time of the trihydroxymethyl aminomethane after being dissolved in the deionized water is 25-40min, and the ultrasonic treatment time is 25-40 min. The mass ratio of the trihydroxymethyl aminomethane to the molybdenum disulfide is 1.1-1.3:1, and the mass ratio of the molybdenum disulfide to the dopamine hydrochloride is 2.3-2.7: 1. And after dopamine hydrochloride is added into the mixed solution I, carrying out ultrasonic treatment for 1.8-2.5h at the temperature of 18-25 ℃, and stirring for reaction for 10-14 h. Stopping the reaction, and centrifuging for 8-12min at the rotating speed of 4000 revolutions per minute.
Step two, premixing modified molybdenum disulfide and epoxy resin
Mixing epoxy resin powder and modified molybdenum disulfide according to a mass ratio of 90-100: 1 to obtain a first mixture, and ball-milling the first mixture to obtain a second mixture.
The ball milling mode of the first mixture is as follows: placing the mixture I into an agate pot of a ball mill for ball milling; the placing amount of the first mixture is 1/2 of the capacity of the agate jar; a plurality of impact medium agate balls are also placed in the agate tank, and the agate balls comprise small balls, medium balls and large balls; the mass ratio of the first mixture to the agate balls is 1: 2.8-4. The running speed of the ball mill is 450-600r/min, and the ball mill alternately runs in a positive and negative rotation mode every 8-12 min. The ball milling time is 2.8-3.2h, and the time of the invention is 3 h. The selection of the ball milling time is an important factor, because too short a time cannot obtain a well-dispersed modified molybdenum disulfide and epoxy resin composite powder, and too long a ball milling time will destroy the structure of the molybdenum disulfide to a large extent.
Preparation of epoxy resin composite powder coating in step three
Weighing other components in the formula according to the formula of the epoxy powder coating; mixing other components in the epoxy powder coating formula with the mixture, and finally obtaining a powder coating product through melt blending extrusion, cooling tabletting, crushing, sieving and grading.
And the third mixture is subjected to melt blending extrusion in a double-screw extruder, wherein the diameter of a screw is 20mm, and the rotating speed is 35-50 rpm. The twin-screw extruder comprises two heating zones, wherein the temperature of the feeding zone is 90-100 ℃, and the temperature of the extrusion section is 105-120 ℃. The average particle size of the powder coating product is 65-80 μm.
Other components of the epoxy powder coating comprise a flatting agent, benzoin, titanium dioxide, 2-methylimidazole, mica, wollastonite and superfine BaSO4And fumed silica, and the like.
In order to verify the preparation process of the composite epoxy powder coating of the present invention, the following examples were set up.
Example 1
Step one, surface modification of nano molybdenum disulfide
Dissolving 7.5g/L trihydroxymethyl aminomethane in deionized water, adjusting pH to 8.1 with dilute hydrochloric acid, stirring, and performing ultrasonic treatment to obtain trihydroxymethyl aminomethane solution.
Adding molybdenum disulfide and absolute ethyl alcohol into a trihydroxymethyl aminomethane solution for ultrasonic treatment to obtain a mixed solution I; and then weighing dopamine hydrochloride, adding the dopamine hydrochloride into the mixed solution I, performing ultrasonic treatment, and stirring for reaction. And (3) stopping the reaction, centrifuging, washing with an ethanol water solution to be neutral in the centrifuging process, freeze-drying, and grinding to obtain black solid powder modified molybdenum disulfide. The mass ratio of the trihydroxymethyl aminomethane to the molybdenum disulfide is 1.12:1, and the mass ratio of the molybdenum disulfide to the dopamine hydrochloride is 2.3: 1.
Step two, premixing modified molybdenum disulfide and epoxy resin
Mixing epoxy resin powder and modified molybdenum disulfide according to a mass ratio of 90: 1, ball milling and mixing for 2.8h to obtain the modified molybdenum disulfide and epoxy resin pre-dispersion.
Preparation of epoxy resin composite powder coating in step three
Weighing other components in the formula according to the formula of the epoxy powder coating; and (3) carrying out double-screw melt blending extrusion, cooling tabletting, crushing, sieving and grading on other components in the epoxy powder coating formula and the mixture to obtain a powder coating product. The average particle size of the powder coating product was 65 μm.
Example 2
Step one, surface modification of nano molybdenum disulfide
Dissolving the trihydroxymethyl aminomethane with the concentration of 8.0g/L in deionized water, adjusting the pH to 8.3 by using dilute hydrochloric acid, stirring, and carrying out ultrasonic treatment to obtain a trihydroxymethyl aminomethane solution.
Adding molybdenum disulfide and absolute ethyl alcohol into a trihydroxymethyl aminomethane solution for ultrasonic treatment to obtain a mixed solution I; and then weighing dopamine hydrochloride, adding the dopamine hydrochloride into the mixed solution I, performing ultrasonic treatment, and stirring for reaction. And (3) stopping the reaction, centrifuging, washing with an ethanol water solution to be neutral in the centrifuging process, freeze-drying, and grinding to obtain black solid powder modified molybdenum disulfide. The mass ratio of the trihydroxymethyl aminomethane to the molybdenum disulfide is 1.2:1, and the mass ratio of the molybdenum disulfide to the dopamine hydrochloride is 2.4: 1.
Step two, premixing modified molybdenum disulfide and epoxy resin
Mixing epoxy resin powder and modified molybdenum disulfide according to a mass ratio of 100: 1, ball milling and mixing for 2.9h to obtain the modified molybdenum disulfide and epoxy resin pre-dispersion.
Preparation of epoxy resin composite powder coating in step three
Weighing other components in the formula according to the formula of the epoxy powder coating; mixing other components in the epoxy powder coating formula with the pre-dispersion, and performing double-screw melt blending extrusion, cooling tabletting, crushing, sieving and grading to obtain a powder coating product. The average particle size of the powder coating product was 73 μm.
Example 3
Step one, surface modification of nano molybdenum disulfide
Dissolving the trihydroxymethyl aminomethane with the concentration of 8.5g/L in deionized water, adjusting the pH to 8.7 by using dilute hydrochloric acid, stirring, and carrying out ultrasonic treatment to obtain a trihydroxymethyl aminomethane solution.
Adding molybdenum disulfide and absolute ethyl alcohol into a trihydroxymethyl aminomethane solution for ultrasonic treatment to obtain a mixed solution I; and then weighing dopamine hydrochloride, adding the dopamine hydrochloride into the mixed solution I, performing ultrasonic treatment, and stirring for reaction. And (3) stopping the reaction, centrifuging, washing with an ethanol water solution to be neutral in the centrifuging process, freeze-drying, and grinding to obtain black solid powder modified molybdenum disulfide. The mass ratio of the trihydroxymethyl aminomethane to the molybdenum disulfide is 1.3:1, and the mass ratio of the molybdenum disulfide to the dopamine hydrochloride is 2.6: 1.
Step two, premixing modified molybdenum disulfide and epoxy resin
Mixing epoxy resin powder and modified molybdenum disulfide according to a mass ratio of 95: 1, performing ball milling and mixing for 3.1h to obtain a pre-dispersion of the modified molybdenum disulfide and the epoxy resin.
Preparation of epoxy resin composite powder coating in step three
Weighing other components in the formula according to the formula of the epoxy powder coating; mixing other components in the epoxy powder coating formula with the pre-dispersion, and performing double-screw melt blending extrusion, cooling tabletting, crushing, sieving and grading to obtain a powder coating product. The average particle size of the powder coating product was 80 μm.
In conclusion, the molybdenum disulfide is modified by the polydopamine, so that the adhesion of the molybdenum disulfide and the epoxy resin powder coating can be enhanced, and the agglomeration phenomenon of molybdenum disulfide nanosheets can be prevented. The modified molybdenum disulfide added into the epoxy resin powder coating can improve the dispersibility of the molybdenum disulfide in the epoxy resin powder, so that the thermal stability and the chemical stability of the molybdenum disulfide are more fully expressed in the epoxy resin powder coating, meanwhile, the barrier effect of the powder coating can be enhanced, the possibility of corrosive media penetrating into the coating is reduced, the powder coating is coated on the surface of the magnesium-lithium alloy, the corrosion resistance and the wear resistance of the magnesium-lithium alloy can be improved, and the service life of the magnesium-lithium alloy is prolonged.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A preparation method of polydopamine modified molybdenum disulfide composite epoxy powder coating is characterized by comprising the following steps:
step one, surface modification of nano molybdenum disulfide
Dissolving tris (hydroxymethyl) aminomethane in deionized water, adjusting the pH to 8-8.7, stirring and performing ultrasonic treatment to obtain tris (hydroxymethyl) aminomethane solution;
adding molybdenum disulfide and absolute ethyl alcohol into the trihydroxymethyl aminomethane solution for ultrasonic treatment to obtain a mixed solution I; then weighing dopamine hydrochloride, adding the dopamine hydrochloride into the mixed solution, carrying out ultrasonic treatment, and then stirring for reaction; stopping reaction, centrifuging, washing with ethanol water solution to neutrality in the centrifuging process, freeze drying, and grinding to obtain modified molybdenum disulfide;
step two, premixing modified molybdenum disulfide and epoxy resin
Mixing epoxy resin powder and the modified molybdenum disulfide according to a mass ratio of 90-100: 1, performing ball milling and mixing to obtain a pre-dispersion;
preparation of epoxy resin composite powder coating in step three
Weighing other components in the formula according to the formula of the epoxy powder coating; mixing other components in the epoxy powder coating formula with the pre-dispersion obtained in the second step; and finally obtaining a powder coating product through double-screw melt blending extrusion, cooling tabletting, crushing, sieving and grading.
2. The method for preparing the polydopamine modified molybdenum disulfide composite epoxy powder coating according to claim 1, wherein the concentration of the tris solution is 7.5-8.5 g/L.
3. The preparation method of the polydopamine-modified molybdenum disulfide composite epoxy powder coating according to claim 1, wherein the mass ratio of the tris (hydroxymethyl) aminomethane to the molybdenum disulfide is 1.1-1.3:1, and the mass ratio of the molybdenum disulfide to the dopamine hydrochloride is 2.3-2.7: 1.
4. The preparation method of the polydopamine modified molybdenum disulfide composite epoxy powder coating according to claim 1, wherein the particle size of the epoxy resin powder is 70-80 um.
5. The preparation method of the polydopamine modified molybdenum disulfide composite epoxy powder coating according to claim 1, wherein the ball milling mode of the pre-dispersion is as follows: and putting the epoxy resin and the modified molybdenum disulfide into an agate tank of a ball mill for ball milling.
6. The preparation method of the polydopamine modified molybdenum disulfide composite epoxy powder coating as claimed in claim 5, wherein the loading amount of the modified molybdenum disulfide and the epoxy resin is 1/2 of the capacity of an agate can.
7. The method for preparing the polydopamine modified molybdenum disulfide composite epoxy powder coating as claimed in claim 5, wherein a plurality of grinding medium agate balls are further placed in the agate tank, and the agate balls comprise small balls, medium balls and large balls.
8. The preparation method of the polydopamine modified molybdenum disulfide composite epoxy powder coating as claimed in claim 7, wherein the mass ratio of the first mixture to the agate balls is 1: 2.8-4.
9. The preparation method of the polydopamine modified molybdenum disulfide composite epoxy powder coating as claimed in claim 1, wherein the pre-dispersion and the powder coating other auxiliary agent mixture are subjected to melt blending extrusion in a twin-screw extruder, the screw diameter is 20mm, and the rotation speed is 35-50 rpm; the double-screw extruder comprises two heating zones, wherein the temperature of the feeding zone is 90-100 ℃, and the temperature of the extrusion section is 105-120 ℃.
10. The method for preparing the polydopamine modified molybdenum disulfide composite epoxy powder coating according to claim 1, wherein the average particle size of the powder coating product is 65-80 μm.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006136435A2 (en) * | 2005-06-24 | 2006-12-28 | Eckart Gmbh | Pearlescent pigments with a cross-linkable binding agent coating, coating composition, method for producing the coated pearlescent pigments and use thereof |
| CN106085121A (en) * | 2016-07-07 | 2016-11-09 | 合肥市燕美粉末涂料有限公司 | Montmorillonite intercalation polymeric modification epoxy resin based powder coating that a kind of impact resistance is good and preparation method thereof |
| US20170158908A1 (en) * | 2015-12-04 | 2017-06-08 | U.S.A. As Represented By The Administrator Of The National Aeronautics And Space Administration | Synthesis and Development of Polyurethane Coatings Containing Flourine Groups for Abhesive Applications |
| CN107216689A (en) * | 2017-06-23 | 2017-09-29 | 西北工业大学 | A kind of dopamine surface is modified two-dimension nano materials and preparation method |
| KR20200097946A (en) * | 2019-02-11 | 2020-08-20 | 이성균 | Antibacterial and corrosion-resistant MoS₂(WS₂, MoSe₂, WSe₂)/implant{omitted} |
| CN112322152A (en) * | 2020-11-11 | 2021-02-05 | 惠州市惠阳区嘉泰涂料有限公司 | Corrosion-resistant powder coating and preparation method thereof |
| CN112490019A (en) * | 2020-12-09 | 2021-03-12 | 桂林电子科技大学 | Polydopamine-coated MXene-based composite material and preparation method and application thereof |
| CN113061386A (en) * | 2021-04-30 | 2021-07-02 | 潍坊东方钢管有限公司 | Preparation process of nano composite epoxy powder coating with different dimensions |
-
2021
- 2021-07-21 CN CN202110824997.2A patent/CN113637383A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006136435A2 (en) * | 2005-06-24 | 2006-12-28 | Eckart Gmbh | Pearlescent pigments with a cross-linkable binding agent coating, coating composition, method for producing the coated pearlescent pigments and use thereof |
| US20170158908A1 (en) * | 2015-12-04 | 2017-06-08 | U.S.A. As Represented By The Administrator Of The National Aeronautics And Space Administration | Synthesis and Development of Polyurethane Coatings Containing Flourine Groups for Abhesive Applications |
| CN106085121A (en) * | 2016-07-07 | 2016-11-09 | 合肥市燕美粉末涂料有限公司 | Montmorillonite intercalation polymeric modification epoxy resin based powder coating that a kind of impact resistance is good and preparation method thereof |
| CN107216689A (en) * | 2017-06-23 | 2017-09-29 | 西北工业大学 | A kind of dopamine surface is modified two-dimension nano materials and preparation method |
| KR20200097946A (en) * | 2019-02-11 | 2020-08-20 | 이성균 | Antibacterial and corrosion-resistant MoS₂(WS₂, MoSe₂, WSe₂)/implant{omitted} |
| CN112322152A (en) * | 2020-11-11 | 2021-02-05 | 惠州市惠阳区嘉泰涂料有限公司 | Corrosion-resistant powder coating and preparation method thereof |
| CN112490019A (en) * | 2020-12-09 | 2021-03-12 | 桂林电子科技大学 | Polydopamine-coated MXene-based composite material and preparation method and application thereof |
| CN113061386A (en) * | 2021-04-30 | 2021-07-02 | 潍坊东方钢管有限公司 | Preparation process of nano composite epoxy powder coating with different dimensions |
Non-Patent Citations (1)
| Title |
|---|
| 张瑴: "《岩石矿物分析》", 30 April 1992, 地质出版社 * |
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