CN113027958A - Motor vehicle brake hub radiator - Google Patents
Motor vehicle brake hub radiator Download PDFInfo
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- CN113027958A CN113027958A CN202110224193.9A CN202110224193A CN113027958A CN 113027958 A CN113027958 A CN 113027958A CN 202110224193 A CN202110224193 A CN 202110224193A CN 113027958 A CN113027958 A CN 113027958A
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- brake hub
- radiator
- porous graphene
- radiating
- motor vehicle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/78—Features relating to cooling
- F16D65/82—Features relating to cooling for internally-engaging brakes
- F16D65/827—Features relating to cooling for internally-engaging brakes with open cooling system, e.g. cooled by air
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/194—After-treatment
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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
Abstract
The invention discloses a motor vehicle brake hub radiator which is characterized by comprising a radiator body sleeved on a brake hub, wherein the outer surface of the radiator body is provided with a heat dissipation arc sheet; the radiator body, the radiating arc pieces and the radiating convex blocks are all made of high-radiating aluminum alloy materials, and high-heat-conducting anticorrosive layers are coated on the outer surface of the radiator body, the outer surface of the radiating arc pieces and the outer surface of the radiating convex blocks. The number of the heat dissipation arc pieces is at least two, the two adjacent heat dissipation arc pieces are connected end to end through bolts, and connecting pieces fixedly connected with the brake hub are further arranged on the heat dissipation arc pieces. The invention has the advantages of simple structure, small volume, light weight, no influence on the functions of the original components, convenient installation, good heat conduction and dissipation effect and good corrosion resistance, and can effectively reduce the temperature of the brake hub, thereby ensuring and improving the braking effect.
Description
Technical Field
The invention relates to the field of motor vehicle brake hubs, in particular to a motor vehicle brake hub radiator.
Background
The motor vehicle braking system is also called as a motor vehicle braking system, and has the following functions: the running motor vehicle is forced to decelerate or even stop according to the requirement of a driver; stably parking the parked vehicle under various road conditions (including on a slope); the speed of the motor vehicle running on the downhill is kept stable. However, the brake hub of the brake hub type brake of the current part of vehicle models is of a semi-closed structure, and the brake failure phenomenon often occurs.
The brake failure is caused by many reasons, however, the failure is caused by the overheating of the brake hub is the most common problem, the overheating of the brake hub is usually caused by that a large amount of heat is accumulated in the long-time use process and cannot be timely dissipated, in addition, the heat dissipation material of the existing brake hub is usually a metal material, and the metal material is often easily corroded, which is also the reason of the heat dissipation performance reduction, so that the design of the heat sink of the brake hub of the motor vehicle, which has excellent heat dissipation performance and is corrosion-resistant, is needed.
Disclosure of Invention
Aiming at the problems, the invention provides the motor vehicle brake hub radiator which has good radiating effect and is convenient to install.
The purpose of the invention is realized by adopting the following technical scheme:
the invention provides a motor vehicle brake hub radiator, which comprises a radiator body sleeved on a brake hub, wherein the outer surface of the radiator body is provided with a radiating arc sheet, and the outer surface of the radiating arc sheet is provided with a plurality of radiating convex blocks which are arranged at equal intervals;
the radiator body, the radiating arc pieces and the radiating convex blocks are all made of high-radiating aluminum alloy materials, and high-heat-conducting anticorrosive layers are coated on the outer surface of the radiator body, the outer surface of the radiating arc pieces and the outer surface of the radiating convex blocks.
Preferably, the heat dissipation bump is a trapezoidal structure with a narrow outer part and a wide inner part.
Preferably, the number of the heat dissipation arc pieces is at least two, the two adjacent heat dissipation arc pieces are connected end to end through bolts, and the heat dissipation arc pieces are further provided with connecting pieces for being fixedly connected with the brake hub.
Preferably, the high thermal conductivity anticorrosive layer comprises the following components in parts by weight:
100 parts of epoxy resin, 0.5-10 parts of polymer modified porous graphene, 0.5-2 parts of defoaming agent, 1-3 parts of wetting agent and 40-60 parts of curing agent.
Preferably, the thickness of the high-thermal-conductivity anticorrosive layer is 10-300 mu m.
Preferably, the epoxy resin is a bisphenol a type epoxy resin or a bisphenol F type epoxy resin.
Preferably, the defoamer is a trialkyl melamine and/or dimethyl siloxane.
Preferably, the wetting agent is a 270 wetting agent and/or a 245 wetting agent.
Preferably, the curing agent is methylene dicyclohexylamine and/or isophorone diamine.
Preferably, the preparation method of the polymer modified porous graphene comprises the following steps:
s1, weighing porous graphene, adding the porous graphene into an ethanol solution, carrying out ultrasonic treatment until the porous graphene is uniform, adding p-ethoxysilane, stirring for 12-18 h under the condition of 40-60 ℃ water bath, cooling to room temperature, filtering and collecting solid, washing the collected solid with purified water for 3-5 times, and drying in a drying box to obtain silane modified porous graphene;
the mass ratio of the porous graphene to the p-ethoxysilane to the ethanol solution is 1: 0.1-0.3: 50-70, and the mass fraction of the ethanol solution is 30-70%;
s2, weighing 2, 5-furandione and N, N-dimethylformamide, mixing in a reaction container, stirring uniformly, adding silane modified porous graphene, and performing ultrasonic dispersion uniformly to obtain a mixed reaction solution A;
the mass ratio of the 2, 5-furandione to the silane-modified porous graphene to the N, N-dimethylformamide is 1: 3-8: 50-80;
s3, weighing ammonium zirconium carbonate, adding the ammonium zirconium carbonate into N, N-dimethylformamide, and stirring the mixture uniformly to obtain a reaction solution B;
wherein the mass ratio of ammonium zirconium carbonate to N, N-dimethylformamide is 1: 20-30;
s4, placing the mixed reaction liquid A in a water bath condition at the temperature of 60-80 ℃, introducing inert gas as protective gas, adding dibenzoyl peroxide, dropwise adding the reaction liquid B while stirring at a first stirring speed, continuously stirring at a second stirring speed for reacting for 8-15 hours after dropwise adding, naturally cooling to room temperature after the reaction is finished, filtering and collecting a solid product, washing the collected solid product with acetone for 3-5 times, and then placing the washed solid product in a drying box for drying to obtain the polymer modified porous graphene;
wherein the mass ratio of the dibenzoyl peroxide to the mixed reaction liquid A to the reaction liquid B is 0.002-0.005: 1: 0.6-1.2.
The invention has the beneficial effects that:
1. the surface of the motor vehicle brake hub is sleeved with the radiator, so that the effect of enhancing the heat dissipation of the motor vehicle brake hub is achieved, the radiator is made of high-heat-dissipation aluminum alloy materials, and the surface of the radiator is coated with the high-heat-conduction anticorrosive layer, so that the double problems of insufficient heat dissipation and frequent corrosion of the radiator are solved. The invention has the advantages of simple structure, small volume, light weight, no influence on the functions of the original components, convenient installation, good heat conduction and dissipation effect and good corrosion resistance, and can effectively reduce the temperature of the brake hub, thereby ensuring and improving the braking effect.
2. The high-thermal-conductivity anticorrosive coating is prepared, wherein the main material is epoxy resin with better corrosion resistance and high temperature resistance, the filler is the self-made polymer modified porous graphene, and the prepared high-thermal-conductivity anticorrosive coating has stronger corrosion resistance and higher thermal conductivity, and in addition, the defect of high brittleness of the epoxy resin is overcome.
In the preparation of the polymer modified porous graphene, a method for forming a polymer on the surface of the graphene is adopted, wherein in the selected ammonium zirconium carbonate molecules, anions usually exist in the form of ions of a zirconium hydroxide polymer, and the zirconium hydroxide can have strong bonding force with oxygen-containing groups; the 2, 5-furandione is an orthorhombic colorless needle-shaped structure containing two ketone bonds in the molecule, and the porous graphene is used as a carrier to participate in the reaction by the principle that the ketone group of the 2, 5-furandione reacts with zirconium hydroxide of ammonium zirconium carbonate molecules to form a polymer, so that the zirconium-based organic polymer generated by the reaction is adsorbed on the surface and in the pore diameter of the porous graphene, and finally the polymer modified porous graphene is obtained.
3. The traditional graphene material is often agglomerated when being added into resin, which not only cannot enhance the performance of the resin, but also reduces part of the performance of the resin, and the existing treatment process is to perform surface active treatment on graphene, however, the dispersibility of the graphene after the treatment cannot completely meet the requirement. According to the invention, the polymer modified porous graphene prepared by modifying graphene solves the problem of the dispersibility of graphene in epoxy resin, and compared with the simple activation of the graphene surface, the polymer modified porous graphene prepared by the invention has stronger dispersibility. In addition, the polymer modified porous graphene can be better combined with epoxy resin due to a large amount of abundant modifiable functional groups on the surface of the polymer modified porous graphene, so that the bonding force among epoxy resin molecules is stronger, the problem of poor toughness of the epoxy resin is solved, and the mechanical property of the epoxy resin is improved.
4. The polymer modified porous graphene prepared by the invention can further enhance the anticorrosion performance after being mixed with the epoxy resin, and the reason is that the graphene has impermeability to gas, the porous graphene has a high specific surface area, a large amount of zirconium-based polymer is adsorbed on the surface and in the pore diameter of the graphene to form a protective film on the surface of the porous graphene, and the zirconium-based polymer contains a large amount of modifiable functional groups with ultrahigh hardness and rich surface, and can prevent the reaction with acidic or alkaline substances, so that the polymer modified porous graphene has a stronger anticorrosion effect.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
FIG. 1 is a schematic structural diagram of a brake hub radiator of a motor vehicle according to the present invention;
reference numerals: brake hub 1, radiator body 2, heat dissipation lug 21, heat dissipation arc piece 22, bolt 23.
Detailed Description
The invention is further described with reference to the following examples.
Example 1
A motor vehicle brake hub radiator is disclosed, as shown in figure 1, and comprises a radiator body 2 sleeved on a brake hub 1, wherein the outer surface of the radiator body 2 is provided with a radiating arc sheet 22, and the outer surface of the radiating arc sheet 22 is provided with a plurality of radiating convex blocks 21 arranged at equal intervals;
the radiator body 2, the radiating arc pieces 22 and the radiating convex blocks 21 are all made of high-radiating aluminum alloy materials, and high-heat-conductivity anticorrosive layers are coated on the outer surface of the radiator body 2, the outer surface of the radiating arc pieces 22 and the outer surface of the radiating convex blocks 21.
The heat dissipation bump 21 has a trapezoidal structure with a narrow outer portion and a wide inner portion.
The number of the heat dissipation arc pieces 22 is at least two, the two adjacent heat dissipation arc pieces 22 are connected end to end through bolts 23, and a connecting piece (not shown) for fixedly connecting with the brake hub 1 is further arranged on each heat dissipation arc piece 22.
The high-heat-dissipation aluminum alloy material is 1070 type aluminum alloy.
The high-thermal-conductivity anticorrosive layer comprises the following components in parts by weight:
100 parts of epoxy resin, 6 parts of polymer modified porous graphene, 1 part of defoaming agent, 2 parts of wetting agent and 50 parts of curing agent.
The thickness of the high-thermal-conductivity anticorrosive layer is 10-300 mu m.
The epoxy resin is bisphenol A type epoxy resin.
The defoaming agent is trialkyl melamine.
The wetting agent is 270 wetting agent.
The curing agent is methylene dicyclohexylamine.
The preparation method of the polymer modified porous graphene comprises the following steps:
s1, weighing porous graphene, adding the porous graphene into an ethanol solution, carrying out ultrasonic treatment until the porous graphene is uniform, adding p-ethoxysilane, stirring for 12-18 h under the condition of 40-60 ℃ water bath, cooling to room temperature, filtering and collecting solid, washing the collected solid with purified water for 3-5 times, and drying in a drying box to obtain silane modified porous graphene;
wherein the mass ratio of the porous graphene to the p-ethoxysilane to the ethanol solution is 1:0.2:60, and the mass fraction of the ethanol solution is 50%;
s2, weighing 2, 5-furandione and N, N-dimethylformamide, mixing in a reaction container, stirring uniformly, adding silane modified porous graphene, and performing ultrasonic dispersion uniformly to obtain a mixed reaction solution A;
wherein the mass ratio of the 2, 5-furandione to the silane-modified porous graphene to the N, N-dimethylformamide is 1:5: 65;
s3, weighing ammonium zirconium carbonate, adding the ammonium zirconium carbonate into N, N-dimethylformamide, and stirring the mixture uniformly to obtain a reaction solution B;
wherein the mass ratio of ammonium zirconium carbonate to N, N-dimethylformamide is 1: 25;
s4, placing the mixed reaction liquid A in a water bath condition at the temperature of 60-80 ℃, introducing inert gas as protective gas, adding dibenzoyl peroxide, dropwise adding the reaction liquid B while stirring at a first stirring speed, continuously stirring at a second stirring speed for reacting for 8-15 hours after dropwise adding, naturally cooling to room temperature after the reaction is finished, filtering and collecting a solid product, washing the collected solid product with acetone for 3-5 times, and then placing the washed solid product in a drying box for drying to obtain the polymer modified porous graphene;
wherein the mass ratio of the dibenzoyl peroxide to the mixed reaction liquid A to the reaction liquid B is 0.003:1: 1.
Example 2
A motor vehicle brake hub radiator is disclosed, as shown in figure 1, and comprises a radiator body 2 sleeved on a brake hub 1, wherein the outer surface of the radiator body 2 is provided with a radiating arc sheet 22, and the outer surface of the radiating arc sheet 22 is provided with a plurality of radiating convex blocks 21 arranged at equal intervals;
the radiator body 2, the radiating arc pieces 22 and the radiating convex blocks 21 are all made of high-radiating aluminum alloy materials, and high-heat-conductivity anticorrosive layers are coated on the outer surface of the radiator body 2, the outer surface of the radiating arc pieces 22 and the outer surface of the radiating convex blocks 21.
The heat dissipation bump 21 has a trapezoidal structure with a narrow outer portion and a wide inner portion.
The number of the heat dissipation arc pieces 22 is at least two, the two adjacent heat dissipation arc pieces 22 are connected end to end through bolts 23, and a connecting piece (not shown) for fixedly connecting with the brake hub 1 is further arranged on each heat dissipation arc piece 22.
The high-heat-dissipation aluminum alloy material is 1050 type aluminum alloy.
The high-thermal-conductivity anticorrosive layer comprises the following components in parts by weight:
100 parts of epoxy resin, 0.5 part of polymer modified porous graphene, 0.5 part of defoaming agent, 1 part of wetting agent and 40 parts of curing agent.
The thickness of the high-thermal-conductivity anticorrosive layer is 10-300 mu m.
The epoxy resin is bisphenol F type epoxy resin.
The defoaming agent is dimethyl siloxane.
The wetting agent is 245 wetting agent.
The curing agent is isophorone diamine.
The preparation method of the polymer modified porous graphene comprises the following steps:
s1, weighing porous graphene, adding the porous graphene into an ethanol solution, carrying out ultrasonic treatment until the porous graphene is uniform, adding p-ethoxysilane, stirring for 12-18 h under the condition of 40-60 ℃ water bath, cooling to room temperature, filtering and collecting solid, washing the collected solid with purified water for 3-5 times, and drying in a drying box to obtain silane modified porous graphene;
wherein the mass ratio of the porous graphene to the p-ethoxysilane to the ethanol solution is 1:0.1:50, and the mass fraction of the ethanol solution is 30%;
s2, weighing 2, 5-furandione and N, N-dimethylformamide, mixing in a reaction container, stirring uniformly, adding silane modified porous graphene, and performing ultrasonic dispersion uniformly to obtain a mixed reaction solution A;
wherein the mass ratio of the 2, 5-furandione to the silane-modified porous graphene to the N, N-dimethylformamide is 1:3: 50;
s3, weighing ammonium zirconium carbonate, adding the ammonium zirconium carbonate into N, N-dimethylformamide, and stirring the mixture uniformly to obtain a reaction solution B;
wherein the mass ratio of ammonium zirconium carbonate to N, N-dimethylformamide is 1: 20;
s4, placing the mixed reaction liquid A in a water bath condition at the temperature of 60-80 ℃, introducing inert gas as protective gas, adding dibenzoyl peroxide, dropwise adding the reaction liquid B while stirring at a first stirring speed, continuously stirring at a second stirring speed for reacting for 8-15 hours after dropwise adding, naturally cooling to room temperature after the reaction is finished, filtering and collecting a solid product, washing the collected solid product with acetone for 3-5 times, and then placing the washed solid product in a drying box for drying to obtain the polymer modified porous graphene;
wherein the mass ratio of the dibenzoyl peroxide to the mixed reaction liquid A to the reaction liquid B is 0.002:1: 0.6.
Example 3
A motor vehicle brake hub radiator is disclosed, as shown in figure 1, and comprises a radiator body 2 sleeved on a brake hub 1, wherein the outer surface of the radiator body 2 is provided with a radiating arc sheet 22, and the outer surface of the radiating arc sheet 22 is provided with a plurality of radiating convex blocks 21 arranged at equal intervals;
the radiator body 2, the radiating arc pieces 22 and the radiating convex blocks 21 are all made of high-radiating aluminum alloy materials, and high-heat-conductivity anticorrosive layers are coated on the outer surface of the radiator body 2, the outer surface of the radiating arc pieces 22 and the outer surface of the radiating convex blocks 21.
The heat dissipation bump 21 has a trapezoidal structure with a narrow outer portion and a wide inner portion.
The number of the heat dissipation arc pieces 22 is at least two, the two adjacent heat dissipation arc pieces 22 are connected end to end through bolts 23, and a connecting piece (not shown) for fixedly connecting with the brake hub 1 is further arranged on each heat dissipation arc piece 22.
The high-heat-dissipation aluminum alloy material is 6063 type aluminum alloy.
The high-thermal-conductivity anticorrosive layer comprises the following components in parts by weight:
100 parts of epoxy resin, 10 parts of polymer modified porous graphene, 2 parts of a defoaming agent, 3 parts of a wetting agent and 60 parts of a curing agent.
The thickness of the high-thermal-conductivity anticorrosive layer is 10-300 mu m.
The epoxy resin is bisphenol A type epoxy resin.
The defoaming agent is trialkyl melamine and dimethyl siloxane.
The wetting agent is 270 wetting agent and 245 wetting agent.
The curing agent is methylene dicyclohexylamine and isophorone diamine.
The preparation method of the polymer modified porous graphene comprises the following steps:
s1, weighing porous graphene, adding the porous graphene into an ethanol solution, carrying out ultrasonic treatment until the porous graphene is uniform, adding p-ethoxysilane, stirring for 12-18 h under the condition of 40-60 ℃ water bath, cooling to room temperature, filtering and collecting solid, washing the collected solid with purified water for 3-5 times, and drying in a drying box to obtain silane modified porous graphene;
wherein the mass ratio of the porous graphene to the p-ethoxysilane to the ethanol solution is 1:0.3:70, and the mass fraction of the ethanol solution is 70%;
s2, weighing 2, 5-furandione and N, N-dimethylformamide, mixing in a reaction container, stirring uniformly, adding silane modified porous graphene, and performing ultrasonic dispersion uniformly to obtain a mixed reaction solution A;
wherein the mass ratio of the 2, 5-furandione to the silane-modified porous graphene to the N, N-dimethylformamide is 1:8: 80;
s3, weighing ammonium zirconium carbonate, adding the ammonium zirconium carbonate into N, N-dimethylformamide, and stirring the mixture uniformly to obtain a reaction solution B;
wherein the mass ratio of ammonium zirconium carbonate to N, N-dimethylformamide is 1: 30;
s4, placing the mixed reaction liquid A in a water bath condition at the temperature of 60-80 ℃, introducing inert gas as protective gas, adding dibenzoyl peroxide, dropwise adding the reaction liquid B while stirring at a first stirring speed, continuously stirring at a second stirring speed for reacting for 8-15 hours after dropwise adding, naturally cooling to room temperature after the reaction is finished, filtering and collecting a solid product, washing the collected solid product with acetone for 3-5 times, and then placing the washed solid product in a drying box for drying to obtain the polymer modified porous graphene;
wherein the mass ratio of the dibenzoyl peroxide to the mixed reaction liquid A to the reaction liquid B is 0.005:1: 1.2.
Comparative example
The high-thermal-conductivity anticorrosive layer comprises the following components in parts by weight:
100 parts of epoxy resin, 6 parts of graphene, 1 part of defoaming agent, 2 parts of wetting agent and 50 parts of curing agent.
The thickness of the high-thermal-conductivity anticorrosive layer is 10-300 mu m.
The epoxy resin is bisphenol A type epoxy resin.
The defoaming agent is trialkyl melamine.
The wetting agent is 270 wetting agent.
The curing agent is methylene dicyclohexylamine.
In order to more clearly illustrate the invention, the high thermal conductivity anticorrosive layers prepared in examples 1 to 3 of the invention and the comparative examples are subjected to performance detection and comparison, firstly, a 1070 type aluminum alloy plate is prepared, then, the high thermal conductivity anticorrosive layer to be detected is coated on the surface of the aluminum alloy material, then, the aluminum alloy material is placed at room temperature to be surface-dried, then, the aluminum alloy material is moved to an oven at 90 to 120 ℃ for drying treatment for 0.5h, and after being taken out and placed at a cool place at room temperature for 24h, the following performance detection is carried out.
1. Coating thickness and degree of sagging:
the thickness of the sprayed wet film is (50 +/-2) mu m, and whether the film sags or not and the thickness of the dried dry film are observed;
2. surface morphology of the coating:
observing whether the surface of the coating has pinholes, bubbles, orange peel and other poor film forming states;
3. testing the adhesion of the coating by a Baige method:
the detection is carried out according to the standard GB/T9286 1998 scratch test of paint films of colored paint and varnish;
evaluation criteria of adhesion force:
level 0: the cutting edge is completely smooth, and no lattice falls off;
level 1: a little coating falls off at the intersection of the cuts, but the cross cutting area is not influenced by more than 5 percent;
and 2, stage: the coating falls off at the intersection of the cuts and/or along the edges of the cuts, and the affected cross cutting area is obviously more than 5 percent but not obviously more than 15 percent;
and 3, level: the coating falls off partially or completely as large fragments along the edge of the cut and/or partially or completely on different parts of the grid, and the affected cross cutting area is obviously more than 15 percent but not more than 35 percent;
4, level: the coating is peeled off along large fragments at the edge of the cut, and/or some squares are partially or completely peeled off, and the affected cross cutting area is obviously more than 35 percent but not more than 65 percent;
and 5, stage: the degree of exfoliation was over grade 4.
4. And (3) corrosion resistance testing:
the detection is carried out according to the detection method of standard GB/T1771-2007 determination of neutral salt spray resistance of colored paint and varnish.
5. Testing the heat conduction performance:
the thermal conductivity was tested according to the standard GB/T22588-.
The results of the experiment are shown in table 1:
TABLE 1 comparison of the Properties of highly thermally conductive anti-corrosive layers
As can be seen from table 1, the high thermal conductivity anticorrosive layers prepared in embodiments 1 to 3 of the present invention are not easy to sag during spraying, have good film formation after drying, smooth surface, no pinhole, blister, orange peel, etc., have good adhesion, can reach level 0, are resistant to salt spray for more than 1000 hours (excellent corrosion resistance), and have relatively high thermal conductivity (high thermal conductivity).
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A motor vehicle brake hub radiator is characterized by comprising a radiator body sleeved on a brake hub, wherein the outer surface of the radiator body is provided with a heat dissipation arc sheet, and the outer surface of the heat dissipation arc sheet is provided with a plurality of heat dissipation convex blocks which are arranged at equal intervals;
the radiator body, the radiating arc pieces and the radiating convex blocks are all made of high-radiating aluminum alloy materials, and high-heat-conducting anticorrosive layers are coated on the outer surface of the radiator body, the outer surface of the radiating arc pieces and the outer surface of the radiating convex blocks.
2. The motor vehicle brake hub radiator of claim 1, wherein the heat dissipating projections are of a trapezoidal structure with a narrow outer portion and a wide inner portion.
3. The motor vehicle brake hub radiator of claim 1, wherein the number of the heat dissipating arc pieces is at least two, two adjacent heat dissipating arc pieces are connected end to end through bolts, and the heat dissipating arc pieces are further provided with connecting pieces for fixedly connecting with the brake hub.
4. The motor vehicle brake hub radiator of claim 1, wherein the high heat dissipation aluminum alloy material is one of 1070 type aluminum alloy, 1050 type aluminum alloy and 6063 type aluminum alloy.
5. The motor vehicle brake hub radiator of claim 1, wherein the high thermal conductivity anticorrosive layer comprises the following components in parts by weight:
100 parts of epoxy resin, 0.5-10 parts of polymer modified porous graphene, 0.5-2 parts of defoaming agent, 1-3 parts of wetting agent and 40-60 parts of curing agent.
6. The motor vehicle brake hub radiator of claim 5, wherein the epoxy resin is bisphenol A type epoxy resin or bisphenol F type epoxy resin.
7. The radiator according to claim 5, wherein said antifoaming agent is trialkyl melamine and/or dimethyl siloxane.
8. The automotive brake hub heat sink of claim 5, wherein the wetting agent is a 270 wetting agent and/or a 245 wetting agent.
9. The motor vehicle brake hub radiator of claim 5, wherein the curing agent is methylene bis-cyclohexane amine and/or isophorone diamine.
10. The motor vehicle brake hub radiator of claim 5, wherein the preparation method of the polymer modified porous graphene comprises the following steps:
s1, weighing porous graphene, adding the porous graphene into an ethanol solution, carrying out ultrasonic treatment until the porous graphene is uniform, adding p-ethoxysilane, stirring for 12-18 h under the condition of 40-60 ℃ water bath, cooling to room temperature, filtering and collecting solid, washing the collected solid with purified water for 3-5 times, and drying in a drying box to obtain silane modified porous graphene;
the mass ratio of the porous graphene to the p-ethoxysilane to the ethanol solution is 1: 0.1-0.3: 50-70, and the mass fraction of the ethanol solution is 30-70%;
s2, weighing 2, 5-furandione and N, N-dimethylformamide, mixing in a reaction container, stirring uniformly, adding silane modified porous graphene, and performing ultrasonic dispersion uniformly to obtain a mixed reaction solution A;
the mass ratio of the 2, 5-furandione to the silane-modified porous graphene to the N, N-dimethylformamide is 1: 3-8: 50-80;
s3, weighing ammonium zirconium carbonate, adding the ammonium zirconium carbonate into N, N-dimethylformamide, and stirring the mixture uniformly to obtain a reaction solution B;
wherein the mass ratio of ammonium zirconium carbonate to N, N-dimethylformamide is 1: 20-30;
s4, placing the mixed reaction liquid A in a water bath condition at the temperature of 60-80 ℃, introducing inert gas as protective gas, adding dibenzoyl peroxide, dropwise adding the reaction liquid B while stirring at a first stirring speed, continuously stirring at a second stirring speed for reacting for 8-15 hours after dropwise adding, naturally cooling to room temperature after the reaction is finished, filtering and collecting a solid product, washing the collected solid product with acetone for 3-5 times, and then placing the washed solid product in a drying box for drying to obtain the polymer modified porous graphene;
wherein the mass ratio of the dibenzoyl peroxide to the mixed reaction liquid A to the reaction liquid B is 0.002-0.005: 1: 0.6-1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110224193.9A CN113027958B (en) | 2021-03-01 | 2021-03-01 | Motor vehicle brake hub radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110224193.9A CN113027958B (en) | 2021-03-01 | 2021-03-01 | Motor vehicle brake hub radiator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113027958A true CN113027958A (en) | 2021-06-25 |
| CN113027958B CN113027958B (en) | 2021-10-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2792885Y (en) * | 2005-04-30 | 2006-07-05 | 韩树森 | Radiator of brake hub for automotive vehicle |
| CN103611431A (en) * | 2013-11-11 | 2014-03-05 | 南京工业大学 | Preparation method of porous-ceramic-supported graphene film |
| CN106433131A (en) * | 2015-08-05 | 2017-02-22 | 中国科学院宁波材料技术与工程研究所 | Graphene heat conduction silica gel and preparation method thereof |
| CN106675336A (en) * | 2016-12-29 | 2017-05-17 | 宁波墨西科技有限公司 | Graphene anticorrosive paint and preparation method thereof |
| CN109054589A (en) * | 2018-08-10 | 2018-12-21 | 四川大仁新创科技有限公司 | A kind of radiator that graphene heat conducting coating is modified |
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- 2021-03-01 CN CN202110224193.9A patent/CN113027958B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2792885Y (en) * | 2005-04-30 | 2006-07-05 | 韩树森 | Radiator of brake hub for automotive vehicle |
| CN103611431A (en) * | 2013-11-11 | 2014-03-05 | 南京工业大学 | Preparation method of porous-ceramic-supported graphene film |
| CN106433131A (en) * | 2015-08-05 | 2017-02-22 | 中国科学院宁波材料技术与工程研究所 | Graphene heat conduction silica gel and preparation method thereof |
| CN106675336A (en) * | 2016-12-29 | 2017-05-17 | 宁波墨西科技有限公司 | Graphene anticorrosive paint and preparation method thereof |
| CN109054589A (en) * | 2018-08-10 | 2018-12-21 | 四川大仁新创科技有限公司 | A kind of radiator that graphene heat conducting coating is modified |
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| CN113027958B (en) | 2021-10-15 |
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Denomination of invention: A radiator for the brake hub of a motor vehicle Effective date of registration: 20230606 Granted publication date: 20211015 Pledgee: Bank of China Co.,Ltd. Dongguan Branch Pledgor: Guangdong Zhenxi precision parts Co.,Ltd. Registration number: Y2023980042934 |
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