CN113652149A - Wear-resistant coating for automobiles and preparation method thereof - Google Patents
Wear-resistant coating for automobiles and preparation method thereof Download PDFInfo
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- CN113652149A CN113652149A CN202111081543.7A CN202111081543A CN113652149A CN 113652149 A CN113652149 A CN 113652149A CN 202111081543 A CN202111081543 A CN 202111081543A CN 113652149 A CN113652149 A CN 113652149A
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- wear
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses an automobile wear-resistant coating and a preparation method thereof, and belongs to the technical field of coatings. The coating comprises the following raw materials in percentage by weight: 20.11-23.55% of epoxy resin, 35.98-38.34% of polyester resin, 0.91-1.18% of flatting agent, 0.8-0.98% of brightener, 0.2-0.39% of benzoin, 0.73-0.98% of defoaming agent, 0.75-0.88% of titanium dioxide, 0.89-0.98% of fast scarlet, 0.39-0.49% of wax powder, 0.71-0.77% of pigment yellow, 3.2-3.37% of scarlet, 0.016-0.02% of carbon black, 19.76-20.42% of barium sulfate and the balance of wear-resistant agent; the coating can be sprayed on the surfaces of automobile parts, has excellent adhesion capability and no air bubbles, and the coated product has smooth surface and improved hardness, mechanical strength and wear resistance.
Description
Technical Field
The invention belongs to the technical field of coatings, and relates to an automobile wear-resistant coating and a preparation method thereof.
Background
There are three main forms of failure of automotive parts in the modern industry: abrasion, fracture and corrosion, with abrasion accounting for approximately 60%. The abrasion consumes a large amount of resources every year, the abrasion-resistant coating is the simplest and most convenient way for reducing the abrasion, and the abrasion-resistant coating is a special functional coating and has better abrasion resistance. At present, wear-resistant coatings widely applied mainly comprise an epoxy coating system and a polyurethane coating system, but have the defects of large friction coefficient, poor high-temperature resistance, poor corrosion resistance and the like, and the wear-resistant filler has a single structure, cannot achieve long-acting wear resistance, has weak bonding force with a base material, is easy to migrate after long-term use and greatly reduces the wear resistance.
Disclosure of Invention
The invention aims to provide an automobile wear-resistant coating and a preparation method thereof, and solves the technical problems in the background art.
The purpose of the invention can be realized by the following technical scheme:
the wear-resistant coating for the automobile comprises the following raw materials in percentage by weight:
20.11-23.55% of epoxy resin, 35.98-38.34% of polyester resin, 0.91-1.18% of flatting agent, 0.8-0.98% of brightener, 0.2-0.39% of benzoin, 0.73-0.98% of defoaming agent, 0.75-0.88% of titanium dioxide, 0.89-0.98% of fast scarlet, 0.39-0.49% of wax powder, 0.71-0.77% of pigment yellow, 3.2-3.37% of scarlet, 0.016-0.02% of carbon black, 19.76-20.42% of barium sulfate and the balance of wear-resistant agent;
the wear-resistant coating for the automobile is prepared by the following steps:
the raw materials are poured into a mixing tank in sequence, mixed evenly, then sent into a screw extruder for melt extrusion, then pressed into slices through a cooling tabletting roller, sent into a crusher for crushing, and sent into a grinder for air classification crushing to obtain the wear-resistant coating for the automobile.
Further, the set parameters of the screw extruder are as follows: the first zone is cold water circulation, the second zone is 100 ℃, the third zone is 120 ℃, and the rotating speed is 55-65 rpm.
Further, the material is ground to a particle size of 30-50 μm by a grinder.
Adding epoxy resin and polyester resin into DMF, heating to 130-150 ℃, stirring for dissolving, adding a wear-resisting agent, barium sulfate, a flatting agent, a brightener, benzoin and wax powder, stirring at the normal temperature of 220-250rpm for 50-70min, adding the rest raw materials, and continuously stirring for 35-45min to obtain the wear-resistant coating for the automobile.
Furthermore, the dosage of DMF is 80-90% of the total mass of the epoxy resin and the polyester resin.
Further, pigment yellow is 1083 yellow or 1124 yellow or more in any proportion.
The wear-resisting agent is prepared by the following steps:
step S1, dissolving thermoplastic phenolic resin in absolute ethyl alcohol, adding silicon dioxide powder, performing ultrasonic dispersion uniformly, transferring to microwave drying at 65 ℃, transferring to a high-temperature tube furnace, and calcining at high temperature for 1-2h to obtain wear-resistant particles;
step S2, adding polyetherimide and trichloromethane into a three-neck flask, stirring at room temperature until the polyetherimide and the trichloromethane are completely dissolved, then adding chopped carbon fiber powder, performing ultrasonic treatment for 2 hours, adding absolute ethyl alcohol, centrifuging, washing and drying precipitates to obtain treated carbon fiber powder;
step S3, adding wear-resistant particles and absolute ethyl alcohol into a three-neck flask, performing ultrasonic treatment for 3-4h, adding KH-570, slowly dropwise adding ammonia water with the mass fraction of 26% to adjust the pH value to 8-9, heating to 60 ℃, stirring to react for 2-2.5h, centrifuging, washing and drying precipitates to obtain wear-resistant particles with modified surfaces;
step S4, adding the surface-modified wear-resistant particles, polyether-ether-ketone and absolute ethyl alcohol into a three-neck flask, uniformly stirring, filtering and drying to obtain a mixture a, putting the mixture a and the treated carbon fiber powder into a high-speed stirrer to be uniformly mixed to obtain a premix, and carrying out melt blending extrusion granulation on the premix through a micro-mixing rheometer to obtain the wear-resistant agent.
Further, in step S1, the molar ratio of the thermoplastic phenolic resin to the silica powder is 0.8 to 1: 1.
further, the particle diameter of the silica powder in step S1 is 25 to 35 nm.
Further, in step S1, the conditions set in the tube furnace are: argon atmosphere, argon flow 500mL/min, temperature 1300 ℃.
Further, in step S2, the polyether imide, the chloroform, and the chopped carbon fiber powder are used in a ratio of 0.55 to 0.6 g: 30-40 mL: 10.2-10.5 g.
Further, in the step S3, the dosage ratio of the wear-resistant particles to the absolute ethyl alcohol to the KH-570 is 10-10.5 g: 50-60 mL: 0.32-0.37 g.
Further, in step S4, the mass ratio of the surface-modified wear-resistant particles to the polyetheretherketone to the carbon fiber powder is 1: 1: 1.
the invention has the beneficial effects that:
1) the wear-resistant coating for the automobile prepared by the invention is a powder coating, can be directly sprayed on the surface of automobile parts, has excellent adhesion capability and no air bubbles, and the surface of a product after coating is smooth and clean, and the hardness and the mechanical strength of the product are improved.
2) The wear-resistant performance of the coating is greatly improved by adding the wear-resistant agent, the main components of the wear-resistant agent comprise wear-resistant particles, carbon fiber powder and polyether ether ketone, wherein the wear-resistant particles are SiC/SiO with a core-shell structure2The nano particles, wherein the carbon fiber powder is a filling component, not only can effectively reduce the friction factor and the wear rate of the material, but also has advantages in the aspect of cost, the polyether-ether-ketone has excellent friction performance and self-lubricating property, and due to the characteristic of high temperature resistance, the SiC/SiO carbon fiber can also keep lower friction factor and wear rate in a high-temperature environment, and the SiC/SiO carbon fiber is prepared by mixing the SiC/SiO carbon fiber2The nano particles are filled between the carbon fibers and the polyether-ether-ketone to play a role in bonding and compacting, in order to enhance the dispersibility of the carbon fiber powder and the interaction between the carbon fiber powder and a base material, the polyether imide which has good compatibility with the polyether-ether-ketone and is close to the processing temperature is adopted to coat the chopped carbon fiber powder, and the silane coupling agent is adopted to perform surface treatment on the wear-resistant particles so as to reduce the aggregation degree of the wear-resistant particles in the polyether-ether-ketone, fully exert the effect, and cooperate with one another to show remarkable wear resistance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Preparing a wear-resisting agent:
step S1, dissolving the thermoplastic phenolic resin in absolute ethyl alcohol, adding silicon dioxide powder with the particle size of 25nm, performing ultrasonic dispersion uniformly, transferring to microwave drying at 65 ℃, transferring to a high-temperature tube furnace to calcine for 1h at 1300 ℃ in argon atmosphere, and obtaining wear-resistant particles, wherein the molar ratio of the thermoplastic phenolic resin to the silicon dioxide powder is 0.8: 1, the flow of argon is 500 mL/min;
step S2, adding 0.55g of polyetherimide and 30mL of chloroform into a three-neck flask, stirring at room temperature until the polyetherimide and the 30mL of chloroform are completely dissolved, then adding 10.2g of chopped carbon fiber powder, performing ultrasonic treatment for 2 hours, adding absolute ethyl alcohol, centrifuging, washing and drying precipitates to obtain treated carbon fiber powder;
step S3, adding 10g of wear-resistant particles and 50mL of absolute ethyl alcohol into a three-neck flask, performing ultrasonic treatment for 3h, adding 0.32g of KH-570, slowly dropwise adding ammonia water with the mass fraction of 26% to adjust the pH value to 8, heating to 60 ℃, stirring for reaction for 2h, centrifuging, washing and drying precipitates to obtain surface-modified wear-resistant particles;
step S4, adding the surface-modified wear-resistant particles, polyether-ether-ketone and anhydrous ethanol into a three-neck flask, uniformly stirring, filtering and drying to obtain a mixture a, putting the mixture a and the treated carbon fiber powder into a high-speed stirrer to be uniformly mixed to obtain a premix, carrying out melt blending extrusion granulation on the premix through a micro-mixing rheometer to obtain the wear-resistant agent, wherein the mass ratio of the surface-modified wear-resistant particles to the polyether-ether-ketone to the carbon fiber powder is 1: 1: 1.
example 2
Preparing a wear-resisting agent:
step S1, dissolving the thermoplastic phenolic resin in absolute ethyl alcohol, adding silicon dioxide powder with the particle size of 30nm into the absolute ethyl alcohol, performing ultrasonic dispersion uniformly, transferring the mixture to a microwave oven at the temperature of 65 ℃ for drying, transferring the dried mixture to a high-temperature tube furnace, and calcining the dried mixture for 1h at the temperature of 1300 ℃ in an argon atmosphere to obtain wear-resistant particles, wherein the molar ratio of the thermoplastic phenolic resin to the silicon dioxide powder is 0.9: 1, the flow of argon is 500 mL/min;
step S2, adding 0.58g of polyetherimide and 35mL of chloroform into a three-neck flask, stirring at room temperature until the polyetherimide and the chloroform are completely dissolved, then adding 10.3g of chopped carbon fiber powder, performing ultrasonic treatment for 2 hours, adding absolute ethyl alcohol, centrifuging, washing and drying precipitates to obtain treated carbon fiber powder;
step S3, adding 10.3g of wear-resistant particles and 55mL of absolute ethyl alcohol into a three-neck flask, performing ultrasonic treatment for 3h, adding 0.35g of KH-570, slowly dropwise adding ammonia water with the mass fraction of 26% to adjust the pH value to 8, heating to 60 ℃, stirring for reaction for 2h, centrifuging, washing and drying precipitates to obtain surface-modified wear-resistant particles;
step S4, adding the surface-modified wear-resistant particles, polyether-ether-ketone and anhydrous ethanol into a three-neck flask, uniformly stirring, filtering and drying to obtain a mixture a, putting the mixture a and the treated carbon fiber powder into a high-speed stirrer to be uniformly mixed to obtain a premix, carrying out melt blending extrusion granulation on the premix through a micro-mixing rheometer to obtain the wear-resistant agent, wherein the mass ratio of the surface-modified wear-resistant particles to the polyether-ether-ketone to the carbon fiber powder is 1: 1: 1.
example 3
Preparing a wear-resisting agent:
step S1, dissolving the thermoplastic phenolic resin in absolute ethyl alcohol, adding silicon dioxide powder with the particle size of 35nm, performing ultrasonic dispersion uniformly, transferring to microwave drying at 65 ℃, transferring to a high-temperature tube furnace to calcine for 2 hours at 1300 ℃ in argon atmosphere, and obtaining wear-resistant particles, wherein the molar ratio of the thermoplastic phenolic resin to the silicon dioxide powder is 1: 1, the flow of argon is 500 mL/min;
step S2, adding 10.5g of chopped carbon fiber powder into a three-neck flask, carrying out ultrasonic treatment for 2 hours, adding absolute ethyl alcohol, centrifuging, washing and drying precipitates to obtain treated carbon fiber powder;
step S3, adding 10.5g of wear-resistant particles and 60mL of absolute ethyl alcohol into a three-neck flask, performing ultrasonic treatment for 4 hours, adding 0.37g of KH-570, slowly dropwise adding ammonia water with the mass fraction of 26% to adjust the pH value to 9, heating to 60 ℃, stirring to react for 2.5 hours, centrifuging, washing and drying precipitates to obtain wear-resistant particles with modified surfaces;
step S4, adding the surface-modified wear-resistant particles, polyether-ether-ketone and anhydrous ethanol into a three-neck flask, uniformly stirring, filtering and drying to obtain a mixture a, putting the mixture a and the treated carbon fiber powder into a high-speed stirrer to be uniformly mixed to obtain a premix, carrying out melt blending extrusion granulation on the premix through a micro-mixing rheometer to obtain the wear-resistant agent, wherein the mass ratio of the surface-modified wear-resistant particles to the polyether-ether-ketone to the carbon fiber powder is 1: 1: 1.
example 4
The wear-resistant coating for the automobile comprises the following raw materials in percentage by weight:
20.11% of epoxy resin, 35.98% of polyester resin, 0.91% of flatting agent, 0.8% of brightener, 0.2% of benzoin, 0.73% of defoaming agent, 0.75% of titanium dioxide, 0.89% of fast bright red, 0.39% of wax powder, 0.71% of pigment yellow, 3.2% of bright red, 0.016% of carbon black, 19.76% of barium sulfate and the balance of wear-resisting agent;
the wear-resistant coating for the automobile is prepared by the following steps:
the raw materials are poured into a mixing tank in sequence, uniformly mixed, then fed into a screw extruder for melt extrusion, then pressed into slices through a cooling tabletting roller, fed into a crusher for crushing, and the crushed materials are fed into a grinder for air classification crushing into 30 mu m of particle size, so that the wear-resistant coating for the automobile is obtained, wherein the cold water circulation is adopted in one area, the temperature is 100 ℃ in the second area, the temperature is 120 ℃ in the third area, and the rotating speed is 55 rpm.
Example 5
The wear-resistant coating for the automobile comprises the following raw materials in percentage by weight:
21.23% of epoxy resin, 36.45% of polyester resin, 0.98% of flatting agent, 0.89% of brightener, 0.28% of benzoin, 0.86% of defoaming agent, 0.82% of titanium dioxide, 0.92% of fast bright red, 0.43% of wax powder, 0.75% of pigment yellow, 3.31% of bright red, 0.018% of carbon black, 19.91% of barium sulfate and the balance of wear-resisting agent;
the wear-resistant coating for the automobile is prepared by the following steps:
the raw materials are poured into a mixing tank in sequence, uniformly mixed, then fed into a screw extruder for melt extrusion, then pressed into slices through a cooling tabletting roller, fed into a crusher for crushing, and the crushed materials are fed into a grinder for air classification crushing into 40 mu m of particle size, so that the wear-resistant coating for the automobile is obtained, wherein the cold water circulation is adopted in one area, the temperature is 100 ℃ in the second area, the temperature is 120 ℃ in the third area, and the rotating speed is 65 rpm.
Example 6
The wear-resistant coating for the automobile comprises the following raw materials in percentage by weight:
23.55% of epoxy resin, 38.34% of polyester resin, 1.18% of flatting agent, 0.98% of brightener, 0.39% of benzoin, 0.98% of defoaming agent, 0.88% of titanium dioxide, 0.98% of fast bright red, 0.49% of wax powder, 0.77% of pigment yellow, 3.37% of bright red, 0.02% of carbon black, 20.42% of barium sulfate and the balance of wear-resisting agent;
the wear-resistant coating for the automobile is prepared by the following steps:
the raw materials are poured into a mixing tank in sequence, uniformly mixed, then fed into a screw extruder for melt extrusion, then pressed into slices through a cooling tabletting roller, fed into a crusher for crushing, and the crushed materials are fed into a grinder for air classification crushing into 50 mu m of particle size, so that the wear-resistant coating for the automobile is obtained, wherein the cold water circulation is adopted in one area, the temperature is 100 ℃ in the second area, the temperature is 120 ℃ in the third area, and the rotating speed is 65 rpm.
Comparative example 1
An automobile chassis wear-resistant anticorrosive paint produced by Beijing Zhi Sheng Weihua chemical Co.
Comparative example 2
Comparative example 2 coating preparation method reference example 4, the difference is that no anti-wear agent is added.
Comparative example 3
The coating of comparative example 3 was prepared by referring to example 4 except that the abrasion-resistant agent was replaced with corundum having a particle size of 100 and 200 μm.
Example 7
The coatings prepared in examples 4 to 6 and comparative examples 2 to 3 were preheated at a temperature of 190 ℃ to 220 ℃ for 15min to 20min, after the automobile parts were sprayed using an electrostatic spray gun, baked at 180 ℃ to 220 ℃ for 15min to 20min to cure, and the coating of comparative example 1 was directly sprayed on the automobile parts and then baked to solidify.
The following performance tests were performed on the automobile parts obtained in example 7, and the test results are shown in table 1:
(1) the paint film hardness is judged according to a series of defects generated on the paint film surface when a pencil with a pencil lead with a specified size, shape and hardness is pushed through the paint film surface according to GB/T6739-2006;
(2) the impact strength of the coating is tested by GB/T1732-93 Standard "determination of paint film impact resistance";
(3) the adhesion was evaluated by the national standard GB/T1720-1989 paint film adhesion test using a four-fold magnifier for the integrity of the film in the circular rolling line score line, expressed as a scale, with the best rating of 1 and the lowest adhesion rating of 7.
(4) The coatings were tested for abrasion resistance according to GB 23988-2009.
TABLE 1
As can be seen from Table 1, the coatings prepared in examples 4 to 6 have superior hardness, impact strength and adhesion, less wear rate and good wear resistance, compared to comparative examples 1 to 3.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (10)
1. The wear-resistant coating for the automobile comprises the following raw materials: epoxy resin, polyester resin, a flatting agent, a brightener, benzoin, a defoaming agent, titanium dioxide, fast bright red, wax powder, pigment yellow, bright red, carbon black, barium sulfate and a wear-resisting agent, wherein the wear-resisting agent is prepared by the following steps:
step S1, dissolving thermoplastic phenolic resin in absolute ethyl alcohol, adding silicon dioxide powder, performing ultrasonic dispersion uniformly, transferring to a microwave oven at 65 ℃ for drying, and transferring to a high-temperature tube furnace for high-temperature calcination for 1-2h to obtain wear-resistant particles;
step S2, adding wear-resistant particles and absolute ethyl alcohol into a three-neck flask, performing ultrasonic treatment for 3-4h, adding KH-570, slowly dropwise adding ammonia water to adjust the pH value to 8-9, heating to 60 ℃, stirring and reacting for 2-2.5h to obtain surface-modified wear-resistant particles;
step S3, adding the surface-modified wear-resistant particles, polyether-ether-ketone and absolute ethyl alcohol into a three-neck flask, uniformly stirring, filtering and drying to obtain a mixture a, putting the mixture a and the treated carbon fiber powder into a high-speed stirrer to be uniformly mixed to obtain a premix, and carrying out melt blending extrusion granulation on the premix through a micro-mixing rheometer to obtain the wear-resistant agent.
2. The wear-resistant coating for automobiles according to claim 1, characterized in that: the weight percentage of each raw material is as follows: 20.11-23.55% of epoxy resin, 35.98-38.34% of polyester resin, 0.91-1.18% of flatting agent, 0.8-0.98% of brightener, 0.2-0.39% of benzoin, 0.73-0.98% of defoaming agent, 0.75-0.88% of titanium dioxide, 0.89-0.98% of fast scarlet, 0.39-0.49% of wax powder, 0.71-0.77% of pigment yellow, 3.2-3.37% of scarlet, 0.016-0.02% of carbon black, 19.76-20.42% of barium sulfate and the balance of wear-resistant agent.
3. The wear-resistant coating for automobiles according to claim 1, characterized in that: the treated carbon fiber powder is prepared by the following steps: adding polyetherimide and trichloromethane into a three-neck flask, stirring at room temperature until the polyetherimide and the trichloromethane are completely dissolved, then adding chopped carbon fiber powder, performing ultrasonic treatment for 2 hours, adding absolute ethyl alcohol, centrifuging, washing and drying the precipitate.
4. The wear-resistant coating for automobiles according to claim 1, characterized in that: in step S1, the molar ratio of the thermoplastic phenolic resin to the silicon dioxide powder is 0.8-1: 1, the particle size of the silicon dioxide powder is 25-35 nm.
5. The wear-resistant coating for automobiles according to claim 1, characterized in that: the conditions set in the tube furnace in step S1 are: argon atmosphere, argon flow 500mL/min, temperature 1300 ℃.
6. The wear-resistant coating for automobiles according to claim 1, characterized in that: in the step S2, the dosage ratio of the wear-resistant particles to the absolute ethyl alcohol to the KH-570 is 10-10.5 g: 50-60 mL: 0.32-0.37 g.
7. The wear-resistant coating for automobiles according to claim 1, characterized in that: in step S3, the mass ratio of the surface-modified wear-resistant particles to the polyetheretherketone to the treated carbon fiber powder is 1: 1: 1.
8. the wear-resistant coating for automobiles according to claim 3, characterized in that: the dosage ratio of the polyetherimide, the trichloromethane and the chopped carbon fiber powder is 0.55-0.6 g: 30-40 mL: 10.2-10.5 g.
9. The preparation method of the wear-resistant coating for the automobile according to claim 1, characterized in that: the preparation method comprises the following preparation steps:
the raw materials are poured into a mixing tank in sequence and mixed uniformly, then the mixture is sent into a screw extruder for melt extrusion, then the mixture is pressed into slices through a cooling tabletting roller and sent into a crusher for crushing, and the crushed materials are sent into a grinder for air classification crushing to obtain the wear-resistant coating for the automobile.
10. The method for preparing the wear-resistant coating for the automobile according to claim 9, wherein: the set parameters of the screw extruder are as follows: the first zone is cold water circulation, the second zone is 100 deg.C, the third zone is 120 deg.C, the rotation speed is 55-65rpm, and the material is ground to 30-50 μm by a grinder.
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| CN111303730A (en) * | 2020-02-17 | 2020-06-19 | 安徽华辉塑业科技股份有限公司 | Weather-resistant strong antistatic powder coating on high-speed rail and preparation method thereof |
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2021
- 2021-09-15 CN CN202111081543.7A patent/CN113652149A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104927298A (en) * | 2015-06-30 | 2015-09-23 | 吉林大学 | Polyetheretherketone-base composite, preparing method thereof and application thereof in friction reduction and wear resistance |
| CN108504262A (en) * | 2018-04-09 | 2018-09-07 | 蚌埠市霆辉涂料科技有限公司 | A kind of powdery paints and preparation method thereof |
| CN111187558A (en) * | 2020-02-17 | 2020-05-22 | 安徽华辉塑业科技股份有限公司 | Outdoor powder coating for automobiles and preparation method thereof |
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Application publication date: 20211116 |