CN113294465A - Coconut fiber brake pad and preparation method thereof - Google Patents
Coconut fiber brake pad and preparation method thereof Download PDFInfo
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- CN113294465A CN113294465A CN202110631678.XA CN202110631678A CN113294465A CN 113294465 A CN113294465 A CN 113294465A CN 202110631678 A CN202110631678 A CN 202110631678A CN 113294465 A CN113294465 A CN 113294465A
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- 239000000835 fiber Substances 0.000 title claims abstract description 53
- 244000060011 Cocos nucifera Species 0.000 title claims abstract description 37
- 235000013162 Cocos nucifera Nutrition 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title abstract description 9
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 15
- 229920001971 elastomer Polymers 0.000 claims abstract description 13
- 239000005060 rubber Substances 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000010428 baryte Substances 0.000 claims abstract description 10
- 229910052601 baryte Inorganic materials 0.000 claims abstract description 10
- 239000010439 graphite Substances 0.000 claims abstract description 10
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 10
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 244000226021 Anacardium occidentale Species 0.000 claims description 2
- 229920000459 Nitrile rubber Polymers 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 235000020226 cashew nut Nutrition 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000002557 mineral fiber Substances 0.000 claims description 2
- 239000010903 husk Substances 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000002783 friction material Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- RBIPMCDRANHGQI-UHFFFAOYSA-M 4,4-dimethylmorpholin-4-ium;chloride Chemical compound [Cl-].C[N+]1(C)CCOCC1 RBIPMCDRANHGQI-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013401 experimental design Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
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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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- 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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
-
- 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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/027—Compositions based on metals or inorganic oxides
- F16D69/028—Compositions based on metals or inorganic oxides containing fibres
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0026—Non-ferro
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0026—Non-ferro
- F16D2200/003—Light metals, e.g. aluminium
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0039—Ceramics
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0052—Carbon
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0056—Elastomers
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/006—Materials; Production methods therefor containing fibres or particles
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/006—Materials; Production methods therefor containing fibres or particles
- F16D2200/0073—Materials; Production methods therefor containing fibres or particles having lubricating properties
-
- 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
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0082—Production methods therefor
- F16D2200/0086—Moulding materials together by application of heat and pressure
-
- 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
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0023—Shaping by pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a coconut fiber brake pad and a preparation method thereof, wherein the brake pad comprises the following raw materials in parts by weight: 19-25 parts of resin, 5-10 parts of coconut fiber, 5-10 parts of ceramic fiber, 20-30 parts of barite, 15-20 parts of aluminum oxide, 5-15 parts of graphite, 10-15 parts of lanthanum oxide and 3-5 parts of rubber powder. The high-strength coconut fiber is used for enhancing the integrity of the brake pad, improving the friction coefficient of the brake pad, reducing the wear rate and reducing the cost of the brake pad; the problem of shortage of natural fiber demand of the existing brake pad is effectively solved by recycling the coconut fiber, and a new way for processing the coconut fiber is also added.
Description
Technical Field
The invention belongs to the field of automobile brake materials, and relates to a coconut shell fiber brake pad and a preparation method thereof.
Background
At present, the brake pad material is gradually mature, and has better performances in the aspects of tribological performance and mechanical performance. However, with the advancement of technology, it has been found that current brake pad materials contain a variety of metal components, such as copper powder, which can cause various levels of pollution to the atmosphere and rivers. The heavy metal pollution makes people realize the importance of sustainable development, so that the requirements of green, noiselessness, high-efficiency utilization and the like are provided for the synthetic brake pad. The requirements are increased on the basis of high performance, the research on the green and environment-friendly friction material of the brake pad is relatively less at present, and the development of the green brake friction material which is free of pollution, reliable in performance and moderate in cost is a necessary requirement for the development of the times.
Disclosure of Invention
The invention aims to provide a brake pad made of coconut fiber and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a coconut fiber brake pad comprises the following raw materials in parts by weight: 19-25 parts of resin, 5-10 parts of coconut fiber, 5-10 parts of ceramic fiber, 20-30 parts of barite, 15-20 parts of aluminum oxide, 5-15 parts of graphite, 10-15 parts of lanthanum oxide and 3-5 parts of rubber powder.
Preferably, the raw materials are calculated by weight portion: 20 parts of resin, 9 parts of coconut fiber, 10 parts of ceramic fiber, 24 parts of barite, 15 parts of aluminum oxide, 7 parts of graphite, 10 parts of lanthanum oxide and 5 parts of rubber powder.
The resin is cashew nut shell oil modified phenolic resin, and the particle size is smaller than 160 meshes.
The length of the coconut fiber is 15 +/-3 mm.
The ceramic fiber is QF ceramic fiber provided by Qifeng mineral fiber company Limited in Zhou Kou city in Henan province.
The barite is light gray in color and has a density of 4.5g/cm3The Mohs hardness is 2.5-3.5.
The carbon content in the graphite is 99%, and the particle size is 250-425 micrometers.
The lanthanum oxide density is 6.5g/cm3The particle size is 200 meshes.
The rubber powder is nitrile butadiene rubber powder with the particle size of 120 meshes.
The preparation method comprises the following steps:
(1) drying raw materials: drying the resin at 50-60 ℃ for 0.5 hour, drying the coconut shell fiber at 100-120 ℃ for 1.5 hours, drying the lanthanum oxide at 200-220 ℃ for 2 hours, drying the rubber powder at 60-80 ℃ for 0.5 hour, and drying the other components at 100-120 ℃ for 1 hour;
(2) shearing: cutting the coconut shell fiber into 5-10 mm;
(3) mixing materials: mixing all the raw materials for 1-2 min to obtain a uniform powdery mixed material;
(4) hot-press molding: hot pressing the powdery mixture;
(5) and (3) heat treatment: keeping the temperature of the sample subjected to hot press molding at 160 ℃ for 12 hours, and naturally cooling;
(6) and (6) inspecting and finishing.
The invention has the beneficial effects that: according to the invention, a high-performance green and environment-friendly brake pad formula is found through the selection and treatment of materials, so that the tribological performance of the brake pad is improved, and the cost of the brake pad is reduced; by recycling the coconut fiber, the problem of shortage of the existing friction material to the natural fiber is effectively solved, and a new way for processing the coconut fiber is added.
Drawings
FIG. 1 is a flow diagram of a manufacturing process of the present invention;
FIG. 2 is a dot line graph of the friction coefficients of the samples of examples 1-3;
FIG. 3 is a graph of wear rate points for the samples of examples 1-3.
Detailed Description
In order to make the present invention more comprehensible, the technical solutions of the present invention are further described below with reference to specific embodiments, but the present invention is not limited thereto.
Example 1
The coconut fiber brake pad comprises the following components in percentage by weight: 20 parts of resin, 24 parts of barite, 15 parts of alumina, 7 parts of graphite, 5 parts of rubber powder, 9 parts of coconut shell fiber, 10 parts of lanthanum oxide and 10 parts of ceramic fiber.
The preparation method of the coconut fiber brake pad comprises the following steps:
(1) drying of raw materials: phenolic resin is dried at 60 ℃ for half an hour, coconut shell fiber is dried at 100 ℃ for one and half hours, lanthanum oxide is dried at 220 ℃ for two hours, rubber powder is dried at 60 ℃ for half an hour, and other components are dried at 110 ℃ for one hour.
(2) Shearing: the coconut shell fiber with proper length is obtained by shearing the coconut shell fiber with a fiber cutting machine.
(3) Mixing materials: the dried raw materials are mixed according to an experimental design formula and then are put into a BL25C33 mixer with a plurality of groups of high-speed rotating knives to be mixed for 1min to 2min, and a uniform powdery mixed material is obtained.
(4) Hot-press molding: weighing the uniformly mixed mixture, and putting the mixture into a Y32-63T type four-column hydraulic press for hot pressing.
(5) And (3) heat treatment: and putting the sample obtained by hot press molding into a DHG-9076A type electric heating constant-temperature air-blast drying oven, and carrying out heat treatment at 160 ℃ for 12 hours.
(6) And (6) inspecting and finishing.
Example 2
The coconut fiber brake pad comprises the following components in percentage by weight: 20 parts of resin, 22 parts of barite, 15 parts of alumina, 9 parts of graphite, 5 parts of rubber powder, 7 parts of coconut shell fiber, 12 parts of lanthanum oxide and 10 parts of ceramic fiber.
The preparation method is the same as example 1.
Example 3
The brake pad applying the coconut fiber comprises the following components in percentage by weight: 20 parts of resin, 20 parts of barite, 15 parts of alumina, 11 parts of graphite, 5 parts of rubber powder, 5 parts of coconut shell fiber, 14 parts of lanthanum oxide and 10 parts of ceramic fiber.
The preparation method is the same as example 1.
The brake pad prepared by the embodiment is subjected to tribology performance test, and the test platform is an X-DM friction wear tester. The results show that the friction coefficients of the three examples are all between 0.40 and 0.54, and meet the international standard, wherein the friction coefficient stability of the first example is the best. The wear rates of the three materials are lower, and the three materials show a stable rising trend except that the three materials have obvious fluctuation at 350 ℃.
Generally, the friction performance of the brake pad is good, wherein the integrity of the brake pad is enhanced by selecting the high-strength coconut fibers, the shearing strength of a sample is improved, the cracking phenomenon under the action of high load and large shearing force in the braking process is prevented, and the formula cost of the brake pad is reduced; through redesigning the formula, lanthanum oxide is added to refine the surface material structure of the coconut shell fiber, so that the structural strength is improved, and the wear resistance of the sample is improved; by recycling the coconut fiber, the problem of shortage of the existing friction material to the natural fiber is effectively solved, and a new way for processing the coconut fiber is added.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (10)
1. The utility model provides a coconut husk fibre brake block which characterized in that: the raw materials comprise the following components in parts by weight: 19-25 parts of resin, 5-10 parts of coconut fiber, 5-10 parts of ceramic fiber, 20-30 parts of barite, 15-20 parts of aluminum oxide, 5-15 parts of graphite, 10-15 parts of lanthanum oxide and 3-5 parts of rubber powder.
2. The coir brake pad of claim 1, wherein: the raw materials comprise the following components in parts by weight: 20 parts of resin, 9 parts of coconut fiber, 10 parts of ceramic fiber, 24 parts of barite, 15 parts of aluminum oxide, 7 parts of graphite, 10 parts of lanthanum oxide and 5 parts of rubber powder.
3. The coir brake pad of claim 1 or 2, wherein: the resin is cashew nut shell oil modified phenolic resin, and the particle size is smaller than 160 meshes.
4. The coir brake pad of claim 1 or 2, wherein: the length of the coconut fiber is 15 +/-3 mm.
5. The coir brake pad of claim 1 or 2, wherein: the ceramic fiber is QF ceramic fiber provided by Qifeng mineral fiber company Limited in Zhou Kou city in Henan province.
6. The coir brake pad of claim 1 or 2, wherein: the barite is light gray in color and has a density of 4.5g/cm3The Mohs hardness is 2.5-3.5.
7. The coir brake pad of claim 1 or 2, wherein: the carbon content in the graphite is 99%, and the particle size is 250-425 micrometers.
8. The coir brake pad of claim 1 or 2, wherein: the lanthanum oxide density is 6.5g/cm3The particle size is 200 meshes.
9. The coir brake pad of claim 1 or 2, wherein: the rubber powder is nitrile butadiene rubber powder with the particle size of 120 meshes.
10. A method for preparing the coir brake pad of claim 1, wherein: the method comprises the following steps:
(1) drying raw materials: drying the resin at 50-60 ℃ for 0.5 hour, drying the coconut shell fiber at 100-120 ℃ for 1.5 hours, drying the lanthanum oxide at 200-220 ℃ for 2 hours, drying the rubber powder at 60-80 ℃ for 0.5 hour, and drying the other components at 100-120 ℃ for 1 hour;
(2) shearing: cutting the coconut shell fiber into 5-10 mm;
(3) mixing materials: mixing all the raw materials for 1-2 min to obtain a uniform powdery mixed material;
(4) hot-press molding: hot pressing the powdery mixture;
(5) and (3) heat treatment: keeping the temperature of the sample subjected to hot press molding at 160 ℃ for 12 hours, and naturally cooling;
(6) and (6) inspecting and finishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110631678.XA CN113294465A (en) | 2021-06-07 | 2021-06-07 | Coconut fiber brake pad and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110631678.XA CN113294465A (en) | 2021-06-07 | 2021-06-07 | Coconut fiber brake pad and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114672132A (en) * | 2022-04-29 | 2022-06-28 | 福州大学 | High-performance copper-free resin-based brake material prepared from fly ash hollow microspheres |
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2021
- 2021-06-07 CN CN202110631678.XA patent/CN113294465A/en active Pending
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| GB1445975A (en) * | 1972-08-30 | 1976-08-11 | Ici Ltd | Friction material |
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