CN101046233A - Brake member and bonding method - Google Patents
Brake member and bonding method Download PDFInfo
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- CN101046233A CN101046233A CN 200710086892 CN200710086892A CN101046233A CN 101046233 A CN101046233 A CN 101046233A CN 200710086892 CN200710086892 CN 200710086892 CN 200710086892 A CN200710086892 A CN 200710086892A CN 101046233 A CN101046233 A CN 101046233A
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Abstract
In a brake member having a brake lining bonded to a brake shoe, the brake shoe has a chemical conversion coating provided on the surface thereof and a ceramics coating layer provided on the chemical conversion coating which has been formed by dipping in a ceramics precursor solution. The brake lining is bonded to the ceramics coating layer by heating under pressure. A method for bonding a brake lining and a brake shoe is provided with a step of degreasing, cleaning and acid-washing the surface of a brake shoe and then forming a chemical conversion coating thereon, a step of dipping the brake shoe having a chemical conversion coating formed thereon in a ceramics precursor solution to effect ceramics coating and a step of bonding a dried brake lining to the brake shoe under heating and pressure.
Description
The application requires the foreign priority of Japanese patent application 2006-100653 that submitted on March 31st, 2006 and the Japanese patent application 2007-019761 that submitted on January 30th, 2007, and its full content is incorporated herein by reference.
Technical field
The present invention relates to the method for binding metal matrix component and liner and the brake member that obtains of method thus.In the method since in the bonding process not with an organic solvent, it has avoided the generation and the volatilization of organic gas, and a kind of eco-friendly method and stable bond quality are provided thus.More particularly, the present invention relates to can not cause because the binding metal matrix component of the pollution that organic solvent causes and the method for liner, and this method can generate to compare with liner with the metal matrix component that is obtained by prime treatment and chemical reversion combination has same or higher rustless property and stable fusible metal matrix component and liner, the brake member that the method thus of the invention still further relates to obtains.
Background technique
In the related art method that is used for binding metal matrix component and liner, with metal matrix component experience comprise the steps surface treatment: the degreasing in the cleaning, rust cleaning, acid pickling step and chemical reversion step, the coating of chemical reversion step, and then prime treatment to form thin resin film.In this way, metal matrix component can fully strengthen its rustless property and to the adhesiveness of liner.
Yet described prime treatment comprises the process that metal matrix component is immersed the solution that contains the resin that is dissolved in organic solvent.As such organic solvent, use be to have high-volatile solvent, for example MEK (MEK), methyl alcohol and toluene.In addition, these organic solvents can volatilization in large quantities from process tank.
In addition, metal matrix component is suspended on the special-purpose hook usually in processing procedure.When this metal matrix component was carried out prime treatment, priming paint can be attached on hook and the metal matrix component simultaneously.Therefore, hook often needs or cleans to remove priming paint from this hook with organic solvent termly.In this step, also need to use a large amount of volatile solvents.
Because the control to VOC (volatile organic compound) becomes strict more, uses such organic solvent will become serious problems in the metal matrix component surface treatment step.
Summary of the invention
One or more embodiment of the present invention provides a kind of eco-friendly method that is used for surface treatment and binding metal matrix component and liner, this method can be in the surface treatment step of metal matrix component and the step of binding metal matrix component and liner in reduce the required organic solvent that causes environmental pollution because of the organic solvent volatilization, can produce metal matrix component and brake block thus, and it is compared with liner with the metal matrix component that obtains by related art method and has identical or higher rustless property with stable bond quality.
Method of the present invention can be used to produce brake member, for example brake pad and brake slipper, and it for example can be installed on the vehicle braked device.
In one or more mode of executions of the present invention, after metal matrix component is forming chemical conversion coating, experience is during as the surface-treated ceramic coated, can obtain comparing the metal matrix component with identical or higher rustless property and the adhesive product of liner with the product that relevant technology prime treatment obtains, even when forming of the resin film that is formed by prime treatment do not carry out as yet.
According to one or more mode of executions of the present invention, brake member comprises: metal matrix component; The chemical conversion coating that on this metal matrix component surface, provides; The ceramic coating that on this chemical conversion coating, provides, it immerses in the ceramic precursor solution by the metal matrix component that will have described chemical conversion coating and forms; With under pressure by adding the liner that is thermally bonded to described ceramic coating.
In described brake member, metal matrix component can be the piece main body of drum brake brake slipper, and described liner can be a brake lining.
In brake member, metal matrix component can be the platen of disk type braker brake pad, and described liner can be a brake lining.
In addition, according to one or more mode of executions of the present invention, the method that liner is bonded to metal matrix component comprises: the degreasing on metal matrix component surface, clean pickling and the step of formation chemical conversion coating on this metal matrix component surface then; The metal matrix component that will have described chemical conversion coating immerses the step that forms ceramic coating in the ceramic precursor solution; With behind dry this metal matrix component under heat and pressure with liner be bonded to the step of described metal matrix component.
In the method, described ceramic precursor solution can comprise based on silane, based on titanium or based on the metal alkoxide of aluminium based on silane or based on the coupling agent of titanium and the thermoplastic resin of water-soluble or water-emulsifiable.
In the adhesion step of this method, the metal matrix component with ceramic coating can be bonded on the liner, and prime coat wherein is not provided between them.
According to one or more mode of executions of the present invention, pre-treatment step from the defatting step to the adhesion step can only be handled with the water-soluble reagent that does not contain organic solvent and carry out so that rustless property to be provided, and this rustless property is compared identical or higher with the rustless property that the method for utilizing chemical conversion coating with the prime treatment combination obtains.In addition,, can avoid linking up with, make to save to become possibility with the solvent clean hook with the adhering to of organic substance because the method for present embodiment need not prime treatment.
In addition, contain based on silane when the ceramic coated step comprises brake slipper immersed, based on titanium or based on the metal alkoxide of aluminium based on silane or based on the ceramic precursor solution of the thermoplastic resin of the coupling agent of titanium and water-soluble or water-emulsifiable when carrying out the step of ceramic coated, can strengthen the intensity of brake slipper with bonding brake lining thereon.
Other features and advantages of the present invention will become more obvious by following description and appended claim.
Description of drawings
Fig. 1 is the flow chart that is used for illustrating the main production stage of brake material of the embodiment of the invention 1 and comparative example 1.
Embodiment
Below typical embodiments of the present invention will be described.
In typical embodiments described below, method of the present invention is used to produce the brake member that is used for vehicle brake.Except four wheeler, described vehicle also comprises sulky vehicle.Vehicle brake has brake member.This brake member has metal matrix component and liner (lining).A kind of break that uses on four wheeler or sulky vehicle---in the drum brake, described brake member is a brake slipper, and this brake slipper (brake shoe) has piece main body and brake lining.In addition, in the disk type braker as another type, described brake member is a brake pad, and this brake pad has platen and brake lining.
Brake member of the present invention not only can be used for the brake slipper of drum brake, and can be used for the various brake members such as the brake pad of disk type braker.Although the present invention is used for brake slipper in typical embodiment, the present invention can also be used for the brake member beyond exemplary embodiment.
When piece main body (metal matrix component) being carried out the chemical reversion processing, the metal surface forms phosphate film.The formation of phosphate film can improve surface energy and bond area.
The example of phosphate layer comprises iron phosphate membrane, manganese phosphate film and lithoform.
After phosphate layer forms, the piece main body is immersed in the previously prepared ceramic precursor solution, take out from ceramic precursor solution with constant speed, then by drying step to carry out ceramic coated.
The preferred ceramic precursor that uses is the organic metal ceramic precursor in exemplary embodiment.These organic metal ceramic precursors are material known in the ceramic industry technical field.These materials can be arbitrary forms of solvent soluble solids, fusible solid and curable liquid.In addition, aforementioned precursor can be a monomer, arbitrary form of oligomer and polymer.
The example that is suitable for carrying out the organic metal ceramic precursor tackiness agent of exemplary embodiment comprises monomer, oligomer and polymer.Term " organic metal " meaning is meant the composition that contains the metal-carbon key as used herein.The example of suitable metal had both comprised the metal that is selected from the element that contains 1 to 15 family that belongs to the IUPAC periodic table, also comprised being selected from nonmetallic main group and transition metal.Preferred metal and nonmetallic example comprise titanium, zirconium, silicon and aluminium.These metals and nonmetal in particularly preferably be silicon.
The ceramic precursor of monomeric form can satisfy the requirement of carrying out exemplary embodiment.Yet the molecular weight of the monomer that can aggregate into polymer that great majority have satisfied ceramic yield (just being higher than 20% weight ratio) is all too low, so that causes the volatilization problem under suitable drying temperature.An example of this monomer is a vinyl trimethylsilane, and its boiling point has only 55 ℃.The curing of this monomer comprises and utilizes heating/drying means to generate ceramic coating that required temperature is higher than the boiling point of this monomer.Thus, this monomer is not suitable for method of the present invention.Generally speaking, monomer is too strong for the process volatility that generates coating.Therefore, the preferred oligomer of liquid ceramics precursor or the polymer of the present invention's use.
The organic metal ceramic precursor that is suitable for carrying out exemplary embodiment preferably contains organic saturated group for example thiazolinyl, alkynyl, epoxy group, acrylate-based and methacrylate based.When with the energy of forms such as heat or ultraviolet ray or laser energy in the organic metal ceramic precursor quickening when crosslinked, such group can quicken at the free radicals of organic unsaturated group or the mechanism of crosslinking of ion.Such cross-linking reaction is solidified the solidified coating that has high ceramic yield with generation fast in the thermolysis post acceleration.The special example of such precursor comprises poly-(acryloxy propyl group methyl) siloxane, glycidoxy propyl group methyl-methylsiloxane copolymer, polyvinyl methylsiloxane, poly-(methyl ethylene) silazalane, 1,2,5-trimethyl-1,3,5-trivinyl silazalane, 1,3,5,7-tetramethyl-1,3,5,7-tetrem thiazolinyl four silazalane, 1,3,5-tetrem thiazolinyl tetramethyl-ring tetrasiloxane, three (vinyl-dimethyl radical siloxane) methyl-monosilane, trivinyl methyl-monosilane, and tetraethoxysilane.
For the piece main body is immersed in the ceramic precursor solution, this piece main body is suspended on the hook, put it into then in the ceramic precursor solution.Immerse after 1 minute, this brake slipper with constant speed, is taken out from ceramic precursor solution as 800mm/min, drying is heated to 100 ℃ then and keeps 10 minutes to form coated film thereon.
Immersion can repeat for several times.Carry out under the situation for several times in immersion, immersion can be carried out in the solution with different component and concentration, and coating can finally be adjusted to required composition and thickness like this.Ceramic precursor solution might adhere on the hook in the immersion process.Yet because the thickness of adhesive layer film has only tens of hundreds of nanometers that arrive, film can separatedly be removed when hook is used for the pretreatment of process next time (pickling).Therefore, the adhesion of ceramic precursor solution can not resemble becomes problem the prime treatment.
Tackiness agent can be coated on any the piece main body and liner.In exemplary embodiment, tackiness agent is coated on the brake lining.As such tackiness agent, the tackiness agent of use has solvent-borne type or powdered thermosetting tackiness agent.As such thermosetting adhesive, preferably use the composite type heat cure adhesive.With enough cohesive forces the metal surface is bonded to porous material composite type heat cure adhesive as being suitable for, can be used as the thermosetting adhesive that the thermosetting resin modification is arranged of example or elastomer-modified thermosetting adhesive.
The example of the thermosetting adhesive of thermosetting resin modification used herein has polyvinylbutyral/phenolic aldehyde, polyvinyl formal/phenolic aldehyde, nylon/phenolic aldehyde, polyvinyl acetate/phenolic aldehyde, polyamide/epoxide resin, acrylate/epoxy resin, aniline/epoxy resin and polyester/epoxy resin.
The example of elastomer-modified thermosetting adhesive used herein has nitrile butadiene rubber/phenolic aldehyde, neoprene/phenolic aldehyde, silicone rubber/phenolic aldehyde, polyurethane/phenolic aldehyde, nitrile butadiene rubber/epoxy resin and polyurethane/epoxy resin.
Here operable phenolic resin has resole resin or contains the linear phenol-aldehyde resin of hexamine.As the static step of disperseing powder adhesive, can use exterior static mode (coronal discharge rifle) or inner electrostatic means (electrification by friction rifle).
When this charged mode of use made the thermoplastic adhesive particle be attached on the brake lining, the percentage recovery rate of tackiness agent can bring up to about 90%.
In addition, the required solvent possibility that becomes make is eliminated in the use of particle (powder) shape tackiness agent, has avoided environmental pollution, has reduced the required time of dry adhesive step, and has avoided the decline of intensity.
Although what foregoing adhesive method used is particle binders, the tackiness agent of other form also can use and make that bonding is easier.
In relevant field process engineering, realized after the surface of brake slipper is coated with priming paint, surface-treated piece main body and the liner that scribbles tackiness agent being adhered to one another.Yet in typical embodiments, do not having on the piece main body under the situation of prime coat, piece main body and liner can heat the adhesive product that obtains two parts immediately under pressure when adhesive tape is arranged.Cohesive force when not having prime coat on the piece main body between two parts also is enough big.
It is to carry out under 0.5 to 1.5MPa 1 minute to 10 hours with pressure that the curing of tackiness agent preferably is 150 ℃ to 300 ℃ in temperature, and more preferably being 180 ℃ to 250 ℃ in temperature is to carry out under 0.8 to 1.0MPa 10 minutes to 2 hours with pressure.
Embodiment
The present invention will be described in further detail in the following embodiments, but the present invention is not confined to this.
(1) formation of ceramic coating on the piece main body
Embodiment 1
The chemical reversion of piece main body experience is applied back formation iron phosphate film, and (film is heavy: 0.4-0.8g/m
2), immerse by in the previously prepared ceramic precursor solution of following method, then dry 10min under 100 ℃.
Ceramic precursor solution prepares as follows: water mixed TEOS (tetraethoxysilane) and acetic acid in 1: 4 in molar ratio as solvent, in mixture, add PVA (polyvinyl alcohol) and reach 5wt%, reach 1mol/l in 3 hours concentration of 70 ℃ of following enriched mixtures then up to precursor up to its content in coating.
After being immersed in the piece main body in the ceramic precursor solution, therefrom take out to form coating thereon with constant speed (800mm/min).
Comparative Examples 1
For making comparisons, (film is heavy: 0.4-0.8g/m will to have the iron phosphate membrane that forms thereon
2) the piece main body carry out prime treatment.
Priming paint is made up of the polyvinylbutyral resin modified phenol resin, and thickness is 2 μ m-7 μ m.
(2) production of piece-liner bonding product
With surface-treated piece main body like this with have liner that tackiness agent applies thereon and stick with glue band and continue down to make in 1 hour 8kg/cm2 pressure, 200 ℃ and be adhered to one another, with preparation bonding product.
Tackiness agent: PL-605-50 (by THE YOKOHAMA RUBBER CO., LTD. produces) (acrylonitrile butadiene rubber modified phenolic resin)
The flow chart of embodiment 1 and Comparative Examples 1 as shown in Figure 1.
(3) corrosion resistance and cohesiveencess evaluation
The corrosion resistance and the cohesiveencess evaluation result of the bonding product of preparation are listed in table 1 and 2 respectively in embodiment 1 and the comparative example 1.
The result who estimates from corrosion resistance as can be seen, when as the drum brake of the drum in the four wheeler, very good by brake member (the piece main body) performance that surface treatment of the present invention and adhesive method obtain with bonding liner thereon, thus it can not experience getting rusty of causing corroding etc.
Further the result shows that the break among the embodiment 1 has corrosion resistance identical with Comparative Examples and cohesiveencess.
Although in the present embodiment, the present invention is applied to the brake member of drum brake, and similar effects is also arranged when the present invention is used for the brake member (brake pad) of disk type braker.
Table 1: corrosion resistance evaluation result (continuous salt spray test: JIS)
| Embodiment 1 | Comparative Examples 1 | |
| Red rust produces needed time | 5H | 5H |
Table 2 shearing test result (JASO) (unit: MPa)
| Embodiment 1 | Comparative Examples 1 | |
| Normal temperature | 4.3 to 5.6 | 4.5 to 5.4 |
| High temperature (300 ℃) | 1.8 to 2.4 | 1.8 to 2.7 |
According to being used to bond the method for metal matrix component of the present invention and liner and the brake member that obtains of method thus, arbitrary step all need not use can produce the organic solvent that volatilization gas causes environmental pollution.Therefore, adhesive method of the present invention can carry out under the condition of environmental protection being suitable for.In addition, can also obtain the break of excellent corrosion resistance and high-adhesion.The break of producing is estimated to be widely used in fields such as passenger vehicle, industrial machinery, railway vehicle, sulky vehicle thus.
It is evident that to those skilled in the art, described the preferred embodiments of the invention can be done multiple improvement and variation, but this can't depart from the spirit and scope of the present invention.Therefore, be noted that corresponding to improvement of scope and the variation that the present invention includes all same claims and equivalent description thereof.
Claims (6)
1. brake member, it comprises:
Metal matrix component;
The chemical conversion coating that on this metal matrix component surface, provides;
Ceramic coating, this ceramic coating provides on this chemical conversion coating, and is immersed in the ceramic precursor solution by the metal matrix component that will have this chemical conversion coating and forms; And
By under pressure, heating the liner that is bonded on this ceramic coating.
2. brake member as claimed in claim 1, wherein said metal matrix component comprise the drum brake brake slipper the piece main body and
Described liner comprises brake lining.
3. brake member as claimed in claim 1, wherein said metal matrix component comprise the disk type braker brake pad platen and
Described liner comprises brake lining.
4. one kind is bonded to method on the metal matrix component with liner, and it comprises:
The degreasing on metal matrix component surface, cleaning, pickling and on this metal matrix component surface, form chemical conversion coating then;
The metal matrix component that will have this chemical conversion coating immerses in the ceramic precursor solution to form ceramic coating; And
After described metal matrix component drying, under heating and pressure, liner is bonded on this metal matrix component.
5. method as claimed in claim 4, wherein said ceramic precursor solution comprise based on silane, based on titanium or based on the metal alkoxide of aluminium based on silane or based on the coupling agent of titanium and the thermoplastic resin of water-soluble or water-emulsifiable.
6. method as claimed in claim 4, wherein in adhesion step, the metal matrix component that will have ceramic coating is bonded on the liner, does not wherein have prime coat between them.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006100653 | 2006-03-31 | ||
| JP2006100653 | 2006-03-31 | ||
| JP2007019761 | 2007-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101046233A true CN101046233A (en) | 2007-10-03 |
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ID=38771075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710086892 Pending CN101046233A (en) | 2006-03-31 | 2007-04-02 | Brake member and bonding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101046233A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101978191A (en) * | 2008-06-27 | 2011-02-16 | 瓦莱奥摩擦材料公司 | Dry clutch lining and associated manufacturing process |
| CN103261730A (en) * | 2010-12-13 | 2013-08-21 | 舍弗勒技术股份两合公司 | Method for producing a friction element |
| CN112628255A (en) * | 2020-12-14 | 2021-04-09 | 岭南师范学院 | Metal ceramic conjugant and manufacturing method thereof |
-
2007
- 2007-04-02 CN CN 200710086892 patent/CN101046233A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101978191A (en) * | 2008-06-27 | 2011-02-16 | 瓦莱奥摩擦材料公司 | Dry clutch lining and associated manufacturing process |
| CN101978191B (en) * | 2008-06-27 | 2014-09-03 | 瓦莱奥摩擦材料公司 | Dry clutch lining and associated manufacturing process |
| CN103261730A (en) * | 2010-12-13 | 2013-08-21 | 舍弗勒技术股份两合公司 | Method for producing a friction element |
| CN103261730B (en) * | 2010-12-13 | 2016-01-20 | 舍弗勒技术股份两合公司 | For the manufacture of the method for friction piece |
| CN112628255A (en) * | 2020-12-14 | 2021-04-09 | 岭南师范学院 | Metal ceramic conjugant and manufacturing method thereof |
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