CN112226206A - Preparation method of integrally woven friction material - Google Patents
Preparation method of integrally woven friction material Download PDFInfo
- Publication number
- CN112226206A CN112226206A CN202011238601.8A CN202011238601A CN112226206A CN 112226206 A CN112226206 A CN 112226206A CN 202011238601 A CN202011238601 A CN 202011238601A CN 112226206 A CN112226206 A CN 112226206A
- Authority
- CN
- China
- Prior art keywords
- fiber
- resin
- woven cloth
- fibers
- finished product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides a preparation method of an integrally woven hot-pressing friction material. The method comprises the steps of preparing metal fibers, inorganic fibers and/or organic fibers into folded yarns, weaving the folded yarns into cloth by a multilayer integral weaving method, impregnating resin, drying to obtain a blank, cutting the blank, placing the cut blank into a hot-pressing die, carrying out hot-pressing curing to obtain a semi-finished product, and carrying out heat treatment, machining and other processes to obtain the finished product. Because the friction material takes the integral woven cloth as a framework, the fiber content is high, and the resin content is low. The finished product has high strength, low hardness and certain flexibility, and solves the problems of the existing friction material.
Description
Technical Field
The invention relates to the technical field of friction materials for clutches, in particular to a preparation method of an integrally woven friction material.
Background
The friction material is a key part for braking and transmission of various machines, and is indispensable in various machines such as automobiles, motorcycles, ships, airplanes, engineering machines, transportation machines, chemical machines, mining machines, petroleum machines, engineering machines and the like. The friction material belongs to a key safety accessory in the application field, and although the cost proportion occupied in a main machine is small, the functional position of the friction material is very important. The quality of the friction material affects the use effect of machinery at first, good means success and smoothness, and bad means failure and disaster.
In addition to the requirement of friction materials to be able to achieve the torque requirements for braking or transmission, friction materials are also required to protect the mating surfaces as much as possible and to be easy to install. In particular, there is a need for friction linings to be installed in the field of use, which is a different environment than there are many installation aids in factory installation. When the friction plate is installed on the site, auxiliary tools are often lacked, so that the convenience of installation of the friction plate is extremely important for users.
The friction materials in the market at present comprise woven brake belts, extruded brake belts, pressed friction plates, laminated friction plates, paper-based friction plates, powder metallurgy friction plates, carbon-carbon composite materials, carbon-ceramic composite materials and the like. For the application occasions with large load, strong pressure and frequent use, a pressing type friction plate and a laminated type friction plate are generally selected; for the application occasions requiring higher strength of the friction plate, the fiber or the mesh cloth is generally dipped and then placed in a hot-pressing mold for hot-pressing molding. For the friction material formed by hot pressing after the fiber thread is dipped in glue, in order to improve the friction performance, some harder material components have to be added, so that the product has overlarge hardness, is not easy to drill, and is easy to scratch a dual surface in use; in order to reduce the hardness, manufacturers of the friction material formed by gumming and hot-pressing the mesh cloth adopt rubber as an adhesive, the material is easy to slip in use, white smoke is generated when the temperature is increased, unpleasant smell is emitted, and the lamination phenomenon of a laminated material sometimes occurs.
The prior art CN103342985B discloses a friction material and a preparation method thereof, which is composed of an adhesive, a reinforcing fiber and a friction performance regulator, and the material is prepared by weaving mesh cloth, dipping the adhesive, baking, stacking and then pressurizing and vulcanizing. It has the advantages of higher curing degree and more stable friction coefficient. However, the friction material still has the defects of excessive product hardness and difficult drilling.
Therefore, a new friction material needs to be provided for solving the problems that the existing friction material formed by dipping fiber yarns or mesh cloth in glue and hot pressing has too high hardness, is not easy to drill, scratches the mating surface, emits white smoke, emits unpleasant odor, is layered in materials and the like.
In view of this, the invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a preparation method of an integrally woven friction material.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the invention relates to a preparation method of an integrally woven friction material, which comprises the following steps:
1) preparing a folded yarn: stranding metal fibers, inorganic fibers and/or organic fibers to prepare a stranded wire;
preferably, the metal fiber is selected from at least one of copper wire, zinc wire and silver wire; the inorganic fiber is glass fiber and/or basalt fiber; the organic fiber is selected from at least one of terylene, acrylic fiber, chinlon, polypropylene fiber, aramid fiber and cotton thread.
Preferably, the plied yarn contains metal fibers, inorganic fibers and organic fibers.
Preferably, the plied yarn contains 2-30 parts by weight of metal fibers, 20-60 parts by weight of inorganic fibers and 5-40 parts by weight of organic fibers.
2) Preparing woven cloth: preparing the folded yarns prepared in the step 1) into woven cloth by adopting an integral weaving method;
preferably, the density of the woven cloth is 1.0-1.3 g/cm3(ii) a The woven cloth is prepared by adopting a half-crossing integral weaving method or a full-crossing integral weaving method.
3) Impregnating resin: immersing the woven cloth prepared in the step 2) into resin, fishing out the woven cloth, and drying the woven cloth after the resin naturally drips to obtain a blank;
preferably, the resin is liquid phenolic resin or liquid modified phenolic resin, the dipping time is 30-100 minutes, the drying temperature is 60-160 ℃, and the drying time is 30-100 minutes.
4) Hot-pressing and curing: cutting the blank prepared in the step 3) into a required shape according to the size of the friction sheet, and then placing the cut blank into a hot press die for hot pressing and curing to obtain a semi-finished product;
preferably, the hot-pressing curing temperature is 100-200 ℃, the pressure is 10-30 MPa, and the time is 30-120 minutes.
5) And (3) heat treatment: placing the semi-finished product prepared in the step 4) in an oven for heat treatment to completely cure the resin of the friction plate;
preferably, the heat treatment temperature is 100-200 ℃ and the time is 0.5-24 h.
6) Machining: and (4) machining the semi-finished product obtained after the heat treatment in the step 5) to obtain a finished product.
Preferably, the machining includes turning, grinding and the like of the surface of the semi-finished product, and further includes the steps of turning an inner-outer conical arc surface, grinding the inner-outer conical arc surface, drilling a mounting hole and the like.
The invention has the beneficial effects that:
the existing friction material is formed by hot pressing after dipping fiber threads or single-layer fiber cloth, has overlarge hardness, is not easy to drill holes to influence installation, is easy to scratch dual surfaces, is easy to delaminate laminated materials, seriously causes slippage due to the decline of transmission torque, and seriously influences the normal use of equipment such as a punching pile machine and the like.
Aiming at the problems, the invention provides a preparation method of an integrally woven hot-pressing friction material. The method comprises the steps of preparing metal fibers, inorganic fibers and/or organic fibers into folded yarns, weaving the folded yarns into cloth by a multilayer integral weaving method, impregnating resin, drying to obtain a blank, cutting the blank, placing the cut blank into a hot-pressing die, carrying out hot-pressing curing to obtain a semi-finished product, and carrying out heat treatment, machining and other processes to obtain the finished product. Because the friction material takes the integral woven cloth as a framework, the fiber content is high, and the resin content is low. The finished product has high strength, low hardness and certain flexibility, and solves the problems of the existing friction material.
Drawings
FIG. 1 is a schematic structural view of a woven fabric obtained by the half-cross integral weaving method of the present invention;
wherein, 1-1 is a warp; 1-2 is weft; 1-3 are mixed lines.
FIG. 2 is a schematic structural view of a woven cloth obtained by the full-crossover integral weaving method of the present invention;
wherein 2-1 is a warp; 2-2 is weft.
FIG. 3 is a schematic structural diagram of a clutch plate of a conventional punching pile machine;
wherein 3-1 is a fiber thread; 3-2 is the cross section of the fiber line.
FIG. 4 is a schematic structural diagram of a clutch plate of another conventional punching pile machine;
wherein 4-1 is fiber cloth; 4-2 is a fiber cloth layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The embodiment of the invention relates to a preparation method of an integrally woven friction material, which comprises the following steps:
1) preparing a folded yarn: stranding metal fibers, inorganic fibers and/or organic fibers to prepare a stranded wire;
in one embodiment of the present invention, the metal fiber is selected from at least one of copper wire, zinc wire, silver wire; the inorganic fiber is glass fiber and/or basalt fiber; the organic fiber is selected from at least one of terylene, acrylic fiber, chinlon, polypropylene fiber, aramid fiber and cotton thread.
Among the fibers, the metal fibers have good thermal conductivity and certain hardness as a supporting material, and the hardness of the metal cannot be too high, otherwise the metal fibers cannot be stranded with other fibers. The inorganic fiber has good heat resistance, mechanical property and wear resistance. The organic polymer fiber such as aramid fiber is relatively light in weight, large in specific surface area, wear-resistant and good in compatibility with resin. In contrast, although the cotton threads are not wear-resistant, the low-temperature static friction coefficient of the cotton threads is large, the cotton threads are good in compatibility with resin, metal fibers exist in the folded yarn as supports, and a small amount of cotton threads have little influence on the wear resistance of the whole material.
In one embodiment of the invention, the plied yarn contains metal fibers, inorganic fibers and organic fibers. Preferably, the plied yarn contains 2-30 parts of metal fibers, 20-60 parts of inorganic fibers and 5-40 parts of organic fibers in parts by weight. The mass ratio of the metal fibers to the inorganic fibers to the organic fibers is preferably 1 (2-5) to 2-5. The amount of metal fibers in the plied yarn is generally lower than that of inorganic fibers and organic fibers alone due to the higher price of metal and the tendency of metallic overmuch friction materials to generate noise during use.
2) Preparing woven cloth: preparing the folded yarns prepared in the step 1) into woven cloth by adopting an integral weaving method;
in one embodiment of the invention, the density of the woven cloth is 1.0-1.3 g/cm3(ii) a The woven cloth is prepared by adopting a half-crossing integral weaving method or a full-crossing integral weaving method.
The structure of the woven cloth obtained by the half-crossing integral weaving method is shown in fig. 1. The weaving wire adopted by the half-crossing integral weaving method comprises warp 1-1, weft 1-2 and mixed wire 1-3. The mixed thread 1-3 penetrates from the upper surface to the lower surface of the woven cloth to play a role of bundling, and each layer of the woven cloth is bundled together. Meanwhile, the mixed lines 1-3 vertically penetrate from the upper surface to the lower surface, the heat conduction distance is short, the copper wires or other heat conduction wires of the mixed lines 1-3 are favorable for conducting heat of the friction surfaces to the non-friction surfaces and uniformly diffusing the heat on the steel back, and the stability of the performance of the friction material is favorable.
The structure of the woven cloth obtained by the full-crossover integral weaving method is shown in fig. 2. The full-crossing integral weaving method only adopts the warp 2-1 and the weft 2-2, and compared with the half-crossing integral weaving method, the mixed yarn 1-3 is not adopted. The warp 2-1 penetrates from the upper surface to the lower surface of the woven cloth in an inclined mode, the heat conduction distance is long, and the heat dissipation is slightly poor compared with a half-crossed integral weaving method. But the interlayer combination is tighter, and the delamination is not easy in the using process.
3) Impregnating resin: immersing the woven cloth prepared in the step 2) into resin, fishing out the woven cloth, and drying the woven cloth after the resin naturally drips to obtain a blank;
in one embodiment of the invention, the resin is liquid phenolic resin or liquid modified phenolic resin, the dipping time is 30-100 minutes, the drying temperature is 60-160 ℃, and the drying time is 30-100 minutes.
4) Hot-pressing and curing: cutting the blank prepared in the step 3) into a required shape according to the size of the friction sheet, and then placing the cut blank into a hot press die for hot pressing and curing to obtain a semi-finished product;
in one embodiment of the invention, the hot-pressing curing temperature is 100-200 ℃, the pressure is 10-30 MPa, and the time is 30-120 minutes.
5) And (3) heat treatment: placing the semi-finished product prepared in the step 4) in an oven for heat treatment to completely cure the resin of the friction plate; it should be noted that, if the time required for the step 4) to be completely cured in the mold is relatively long, the production efficiency is low. The product is generally primarily cured in a mold, and the product is taken out and then put into an oven for further heat treatment to be completely cured.
In one embodiment of the present invention, the heat treatment temperature is 100 to 200 ℃ and the time is 0.5 to 24 hours.
6) Machining: and (4) machining the semi-finished product obtained after the heat treatment in the step 5) to obtain a finished product.
In an embodiment of the present invention, the machining includes turning, grinding, and the like of the surface of the semi-finished product, and further includes the steps of turning the inner and outer tapered arc surfaces, grinding the inner and outer tapered arc surfaces, drilling the mounting hole, and the like.
Example 1
An integral weaving type friction material is prepared by the following steps:
1) preparing a folded yarn: stranding 20 parts of copper wires, 50 parts of glass fibers and 30 parts of cotton wires to prepare a stranded wire;
2) preparing woven cloth: preparing the folded yarns prepared in the step 1) into woven cloth by adopting a weaving machine and a half-crossing integral weaving method, wherein the density of the woven cloth is 1.2g/cm3；
3) Impregnating resin: immersing the woven cloth prepared in the step 2) into liquid phenolic resin for 60 minutes, fishing out the woven cloth, naturally dripping the resin, and drying the woven cloth in a drying oven at 120 ℃ for 50 minutes to obtain a blank;
4) hot-pressing and curing: cutting the blank prepared in the step 3) into a required shape according to the size of the clutch plate, and then placing the blank into a hot press die for hot-pressing and curing, wherein the hot-pressing and curing temperature is 130 ℃, the pressure is 13MPa, and the time is 60 minutes to obtain a semi-finished product;
5) and (3) heat treatment: placing the semi-finished product prepared in the step 4) in an oven for heat treatment at 150 ℃ for 12 hours to completely cure the clutch disc resin;
6) machining: and (5) performing machine grinding on the inner arc surface and the outer arc surface of the semi-finished product obtained after the heat treatment in the step 5) to obtain a finished product.
The experimental parameters in example 1 were varied to obtain examples 2-6 and comparative examples 1-3. The experimental procedures were the same as in the examples except for the parameters in the table, and the specific settings are shown in table 1.
The friction material in comparative example 2 is prepared by impregnating the fiber thread with resin, drying, and putting into a mold for hot press molding, and the structural schematic diagram is shown in fig. 3, wherein the fiber thread 3-1 is scattered in the friction material, and the fiber thread section 3-2 is visible from the section of the friction material. In the friction material of comparative example 3, the two-dimensional fiber cloth 4-1 was prepared by using the warp and the weft, and then the plurality of layers of the fiber cloth 4-1 were bonded to obtain the fiber cloth layer 4-2, and the schematic structural view thereof is shown in fig. 4.
TABLE 1
| Examples/comparative examples | Altered experimental parameters |
| Example 1 | In the step 1), the folded yarn contains 20 parts of copper wire, 50 parts of glass fiber and 30 parts of cotton yarn |
| Example 2 | In the step 1), the folded yarn contains 2 parts of copper wire, 20 parts of glass fiber and 5 parts of cotton yarn |
| Example 3 | In the step 1), the folded yarn contains 10 parts of copper wire, 10 parts of aramid fiber and 10 parts of cotton yarn |
| Example 4 | In the step 1), the folded yarn contains 2 parts of copper wire and 5 parts of glass fiber |
| Example 5 | In the step 1), the folded yarn contains 2 parts of copper wire and 5 parts of cotton wire |
| Example 6 | In step 2), a full-cross integral weaving method is adopted to obtain woven cloth |
| Comparative example 1 | The heat treatment of step 5) is not performed |
| Comparative example 2 | Soaking the fiber thread in resin, drying, and putting the fiber thread into a die for hot-press molding to prepare the prepared friction material |
| Comparative example 3 | Friction material prepared by the method of embodiment CN103342985B |
Test example
The examples and comparative examples were machined as required by national standards into tensile bars (GB/T1040.4-2006), compression bars (GB/T1041-2008), shear bars (GB/T26739-.
Wherein the length of the compressed sample block is 10mm +/-0.1 mm, the width is 10mm +/-0.1 mm, and the thickness is 10mm +/-0.2 mm.
The length of the cutting sample block is 20 plus or minus 0.1mm, the width is 20 plus or minus 0.1mm, and the thickness is 10 plus or minus 0.1 mm.
The friction performance test sample block is a square sample block with the side length of 25mm +/-0.1 and the thickness of 6-8 mm.
And (3) carrying out mechanical property test and friction property test on the sample piece according to the national standard, wherein the test results are shown in a table 2.
TABLE 2
As can be seen from the data in Table 2, the hardness differences between examples 1-6 are not great, which indicates that the use of different twisted wire materials has less influence on the hardness of the friction material. The hardness of the embodiment 1-3 is slightly lower than that of the embodiment 4 and 5, which shows that the metal content in the plied yarn has certain influence on the hardness, and meanwhile, the friction material containing the metal fibers, the organic fibers and the inorganic fibers has better mechanical property and lower hardness. Example 4 contains no organic fiber and has a higher hardness because both the metal and the glass fiber have higher hardness. Example 5 contains no inorganic fiber, has lower hardness, but has a lower coefficient of friction due to the poor temperature resistance of cotton and the severe high temperature decay of the coefficient of friction.
Compared with the example 1, the mechanical properties of the example 6 are similar, and only the friction coefficient is slightly lower than that of the example 1, which shows that the weaving method has certain influence on the temperature resistance of the friction material. The friction material of example 6 was fully cross-over integrally woven, and the heat transfer distance between the upper and lower surfaces was longer than that of the friction material obtained by half cross-over integrally woven in example 1, resulting in poor heat dissipation and a slight decrease in friction coefficient.
The friction coefficient of the comparative example 1 is low, which shows that the later heat treatment has a large influence on the friction performance of the friction material because the resin is not completely cured and some chemical reactions are not completely performed, and the friction heat generation in the using process causes the incomplete chemical reactions to continue to be performed, so that the friction coefficient of the friction material is reduced.
Comparative example 2 is formed by immersing the fiber thread in resin, drying and then putting the fiber thread in a mold for hot pressing, and the fiber thread is dense after being immersed in the resin, so that the hardness is higher. In addition, the fiber line on the market at present uses inorganic fiber with high proportion, and only a very small amount of metal fiber or organic fiber is added, so that the fiber line friction material on the market at present has extremely high hardness, and the installation and drilling are extremely difficult. And the proportion of the inorganic fiber to the resin content is high, so that the heat dissipation performance is poor, and the friction coefficient is low due to the high-temperature carbonization of the resin.
Comparative example 3 was prepared by the method of embodiment CN103342985B, in which a single cloth was impregnated with resin and then laminated and hot-pressed, and the material was excessively dense, resulting in high hardness, difficulty in mounting and drilling, and low friction coefficient due to high resin content, similar to hot pressing after impregnation of fiber with resin.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A preparation method of an integrally woven friction material is characterized by comprising the following steps:
1) preparing a folded yarn: stranding metal fibers, inorganic fibers and/or organic fibers to prepare a stranded wire;
2) preparing woven cloth: preparing the folded yarns prepared in the step 1) into woven cloth by adopting an integral weaving method;
3) impregnating resin: immersing the woven cloth prepared in the step 2) into resin, fishing out the woven cloth, and drying the woven cloth after the resin naturally drips to obtain a blank;
4) hot-pressing and curing: cutting the blank prepared in the step 3) into a required shape according to the size of the friction sheet, and then placing the cut blank into a hot press die for hot pressing and curing to obtain a semi-finished product;
5) and (3) heat treatment: placing the semi-finished product prepared in the step 4) in an oven for heat treatment to completely cure the resin of the friction plate;
6) machining: and (4) machining the semi-finished product obtained after the heat treatment in the step 5) to obtain a finished product.
2. The method according to claim 1, wherein in step 1), the metal fibers are selected from at least one of copper wires, zinc wires and silver wires; the inorganic fiber is glass fiber and/or basalt fiber; the organic fiber is selected from at least one of terylene, acrylic fiber, chinlon, polypropylene fiber, aramid fiber and cotton thread.
3. The method of claim 2, wherein in step 1), the plied yarn contains metal fibers, inorganic fibers and organic fibers.
4. The method as claimed in claim 3, wherein in the step 1), the plied yarn contains 2-30 parts by weight of metal fibers, 20-60 parts by weight of inorganic fibers and 5-40 parts by weight of organic fibers.
5. The method as claimed in claim 1, wherein in the step 2), the density of the woven cloth is 1.0-1.3 g/cm3。
6. The method as claimed in claim 1, wherein in the step 2), the woven cloth is prepared by a half-cross integral weaving method or a full-cross integral weaving method.
7. The method according to claim 1, wherein in step 3), the resin is a liquid phenolic resin or a liquid modified phenolic resin.
8. The method according to claim 1, wherein in the step 3), the dipping time is 30 to 100 minutes, the drying temperature is 60 to 160 ℃, and the drying time is 30 to 100 minutes.
9. The method according to claim 1, wherein in the step 4), the temperature of the hot-press curing is 100-200 ℃, the pressure is 10-30 MPa, and the time is 30-120 minutes.
10. The method according to claim 1, wherein in the step 5), the heat treatment temperature is 100 to 200 ℃ and the time is 0.5 to 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011238601.8A CN112226206A (en) | 2020-11-09 | 2020-11-09 | Preparation method of integrally woven friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011238601.8A CN112226206A (en) | 2020-11-09 | 2020-11-09 | Preparation method of integrally woven friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112226206A true CN112226206A (en) | 2021-01-15 |
Family
ID=74122293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011238601.8A Pending CN112226206A (en) | 2020-11-09 | 2020-11-09 | Preparation method of integrally woven friction material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112226206A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113025272A (en) * | 2021-03-30 | 2021-06-25 | 贵阳天龙摩擦材料有限公司 | Friction material and preparation method thereof |
| CN113249093A (en) * | 2021-05-18 | 2021-08-13 | 北京恒年伟业矿物纤维加工有限公司 | Glass fiber reinforced plastic based carbon ceramic friction material and preparation method and application thereof |
| CN113733840A (en) * | 2021-08-31 | 2021-12-03 | 东风商用车有限公司 | Noise reduction sheet for commercial vehicle and preparation method thereof |
| CN114196159A (en) * | 2021-11-15 | 2022-03-18 | 泰山体育产业集团有限公司 | Layered carbon fiber reinforced friction material and preparation process thereof |
| CN114857192A (en) * | 2022-06-06 | 2022-08-05 | 杜建华 | Carbon fiber reinforced carbon-based friction plate structure and preparation method thereof |
| CN116159224A (en) * | 2023-04-25 | 2023-05-26 | 成都中医药大学 | Sleep-aiding application combining self-powered flexible sensing for laser irradiation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0335600A1 (en) * | 1988-03-28 | 1989-10-04 | Eaton Corporation | Resilient friction material |
| CN2222726Y (en) * | 1995-04-11 | 1996-03-20 | 沈阳摩擦密封材料总厂 | Plain friction ribbon |
| CN103342985A (en) * | 2013-06-06 | 2013-10-09 | 贵阳天龙摩擦材料有限公司 | Friction material without asbestos layer and manufacturing method |
| CN106590531A (en) * | 2016-12-30 | 2017-04-26 | 重庆奥顺特机械制造有限公司 | Automotive brake friction material and preparation method thereof |
-
2020
- 2020-11-09 CN CN202011238601.8A patent/CN112226206A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0335600A1 (en) * | 1988-03-28 | 1989-10-04 | Eaton Corporation | Resilient friction material |
| CN2222726Y (en) * | 1995-04-11 | 1996-03-20 | 沈阳摩擦密封材料总厂 | Plain friction ribbon |
| CN103342985A (en) * | 2013-06-06 | 2013-10-09 | 贵阳天龙摩擦材料有限公司 | Friction material without asbestos layer and manufacturing method |
| CN106590531A (en) * | 2016-12-30 | 2017-04-26 | 重庆奥顺特机械制造有限公司 | Automotive brake friction material and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113025272A (en) * | 2021-03-30 | 2021-06-25 | 贵阳天龙摩擦材料有限公司 | Friction material and preparation method thereof |
| CN113249093A (en) * | 2021-05-18 | 2021-08-13 | 北京恒年伟业矿物纤维加工有限公司 | Glass fiber reinforced plastic based carbon ceramic friction material and preparation method and application thereof |
| CN113249093B (en) * | 2021-05-18 | 2022-04-19 | 北京恒年伟业矿物纤维加工有限公司 | Glass fiber reinforced plastic based carbon ceramic friction material and preparation method and application thereof |
| CN113733840A (en) * | 2021-08-31 | 2021-12-03 | 东风商用车有限公司 | Noise reduction sheet for commercial vehicle and preparation method thereof |
| CN113733840B (en) * | 2021-08-31 | 2023-09-01 | 东风商用车有限公司 | Noise reduction sheet for commercial vehicle and preparation method thereof |
| CN114196159A (en) * | 2021-11-15 | 2022-03-18 | 泰山体育产业集团有限公司 | Layered carbon fiber reinforced friction material and preparation process thereof |
| CN114857192A (en) * | 2022-06-06 | 2022-08-05 | 杜建华 | Carbon fiber reinforced carbon-based friction plate structure and preparation method thereof |
| CN116159224A (en) * | 2023-04-25 | 2023-05-26 | 成都中医药大学 | Sleep-aiding application combining self-powered flexible sensing for laser irradiation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112226206A (en) | Preparation method of integrally woven friction material | |
| US5217778A (en) | Composite fiber friction facing | |
| US20160289126A1 (en) | Friction material composition and friction material | |
| CN110628171B (en) | Friction material, long-service-life friction lining and preparation method thereof | |
| CN103003591A (en) | Friction member and friction material thereof | |
| CN102305255A (en) | Paper-based friction plate and manufacturing method thereof | |
| US3738901A (en) | Clutch disk and method of making | |
| CN103694485B (en) | A kind of Composite friction plate and its preparation method | |
| WO2014016891A1 (en) | Brake pad for yaw control, and brake member | |
| CN110594323A (en) | Composite double-layer brake pad and preparation method thereof | |
| WO2019163633A1 (en) | Cfrp sheet, frp-metal composite, and method for manufacturing same | |
| CN113320239A (en) | Basalt fiber reinforced wear-resistant composite material and preparation method thereof | |
| CN1020430C (en) | Composite aluminium protective material and tech thereof | |
| JP2014505752A (en) | Friction member and friction material thereof | |
| CN101429976A (en) | Clutch face sheet for cars | |
| CN101402779A (en) | Non-asbestos drilling machine braking block material and manufacturing process therefor | |
| CN104786575B (en) | A kind of asbestos base lamilate, its manufacturing method and its application | |
| DE102019113375A1 (en) | FRICTION MATERIAL | |
| CN105697624A (en) | 2.5-dimensional carbon fiber/aramid fiber woven perform reinforced cashew nut shell oil modified phenolic resin-based friction material | |
| CN108504050B (en) | Preparation method of composite sliding plate for bridge support and friction pair | |
| CN113201202A (en) | High-damping resin-based friction material and preparation method thereof | |
| CN108468735B (en) | Asbestos-free friction material and preparation method and application thereof | |
| CN107288988A (en) | Carbon fiber pad and its associated methods | |
| CN112553890A (en) | Preparation method of impact-resistant automobile clutch facing | |
| JP2005515921A (en) | Composite friction element and pultrusion fabrication method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210115 |
|
| RJ01 | Rejection of invention patent application after publication |