CN1272162C - Brake gasket and its preparng metod - Google Patents
Brake gasket and its preparng metod Download PDFInfo
- Publication number
- CN1272162C CN1272162C CN 200310122203 CN200310122203A CN1272162C CN 1272162 C CN1272162 C CN 1272162C CN 200310122203 CN200310122203 CN 200310122203 CN 200310122203 A CN200310122203 A CN 200310122203A CN 1272162 C CN1272162 C CN 1272162C
- Authority
- CN
- China
- Prior art keywords
- sisal fiber
- raw material
- sisal
- hours
- washed
- 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.)
- Expired - Fee Related
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The present invention relates to a brake lining and a preparation method thereof. Firstly, sisal fibers which are cut into 10 to 20mm are washed by deionized water after being soaked in a solution mixed by anhydrous alcohol and benzene and cooled to room temperature after being boiled in a NaOH solution; the sisal fibers are washed to neutrality by deionized water and are finally put in a drying oven to be heated for standby; raw materials manufactured by evenly mixing phenolic resin, sisal fibers, copper powder, graphite, molybdenum disulfide, macromolecule prepolymers, metal oxide, nitrile rubber, non-metallic compounds and barium sulfate are filled in a mixer at a high speed; the raw materials which are mixed evenly are pressed into a blank body; the pressed blank body is thermoformed, and heat treatment is carried out to the blank body under 190 to 200 DGE C after the blank body is thermoformed. The present invention uses sisal fibers as reinforcing materials for manufacturing non-asbestos brake linings for automobiles and has the advantages of stable friction coefficient, small heat fading performance, low abrasion, little abrasion to duality, stable braking, low noise and no environmental pollution in the processes of manufacture and use.
Description
Technical field
The invention belongs to the string composite friction material, particularly a kind of brake facing and preparation method thereof.
Background technology
Brake facing is a kind of friction material that is widely used in automobile, train, building and engineering machinery etc.Traditional brake lining multiselect uses asbestos as fortifying fibre.But the thermal conductivity of asbestos fibre is low, and frictional heat is difficult for shedding, thereby causes the heat fading and the wearing and tearing aggravation of material, makes it can not adapt to the operating mode of high speed, heavy duty better; Simultaneously, in production and use, asbestos dust has contaminated environment and carcinogenic effect, and is very big to the influence of health and environment, caused the great attention of domestic and international automobile industry.Thereby begun legislation in many industrially developed country and ban use of, and begin to develop asbestos-free friction material.China also stipulates to rise on October 1st, 2003 to completely forbid on automobile and uses asbestos material.
Summary of the invention
The object of the present invention is to provide a kind of preparation technology simple, make and use in non-environmental-pollution, stable friction factor, character of heat-fading is little, wear away low, little to the antithesis wearing and tearing, brake steady, brake facing that noise is low and preparation method thereof.
For achieving the above object, the preparation technology that the present invention adopts is: at first sisal fiber being cut into length is 10～20mm short sisal fibers; Volume ratio by 1: 1 prepares absolute ethyl alcohol+benzole soln, and the sisal fiber that cuts is immersed in wherein 24～30 hours; Sisal fiber after take out soaking is used absolute ethyl alcohol and washed with de-ionized water successively, and the pH value that is washed till sisal fiber is 7.5～7.0 to get final product; It is to boil taking-up in 2～3 hours in 75～85 ℃ in 10% the NaOH solution in water-bath that the sisal fiber of above-mentioned cleaning is immersed weight percent concentration, is cooled to room temperature; The pH value that is washed till sisal fiber with the sisal fiber after the washed with de-ionized water soda boiling is 7.5～7.0, and is neutralized to neutrality with sulfuric acid liquid; Again with ionized water clean to the pH value be 7.0; At last sisal fiber is put into baking oven and made standby sisal fiber raw material in 4～6 hours in 150～170 ℃ of processing; Adopt material by wet type mixing, in high speed mixer with mass percent be: 35%～45% phenolic resins, 25%～35% standby sisal fiber raw material, 5%～15% copper powder, 1%～8% graphite powder, 2～9% molybdenum bisuphide, 5%～15% macromolecule prepolymer, 2%～10% metal oxide, 5%～15% acrylonitrile-butadiene rubber, 5%～15% nonmetallic compound and 1%～8% barium sulfate mix makes raw material; Under the pressure of 2～2.5Mpa, the raw material that mixes is pressed into base substrate; The base substrate that presses is following dry 10～15 minutes at 90～110 ℃; At 190～200 ℃, pressure is under the situation of 20～25Mpa dried base substrate to be carried out hot-formingly, and the hot-forming time is 15～25 minutes; Hot-forming back is at 190～200 ℃, and heat treatment got final product in 1～3 hour.
Macromolecule prepolymer of the present invention is polyacrylamide or polytetrafluoroethylene (PTFE); Metal oxide is di-iron trioxide or zinc oxide or alundum (Al; Nonmetallic compound is silica or tungsten carbide or carborundum; To standby sisal fiber raw material can also be that 5% alcoholic solution soaked 2～3 hours with concentration, is not higher than under 100 ℃ in temperature then alcohol is dried;
The brake facing that makes according to preparation method of the present invention contains mass percent and is: 35%～45% phenolic resins, 25%～35% standby sisal fiber raw material, 5%～15% copper powder, 1%～8% graphite powder, 2～9% molybdenum bisuphide, 5%～15% macromolecule prepolymer, 2%～10% metal oxide, 5%～15% acrylonitrile-butadiene rubber, 5%～15% nonmetallic compound and 1%～8% barium sulfate.
Because sisal fiber is as reinforcing material, because sisal fiber has that fiber is long, strong but pliable in texture, springiness, big, the wear-resisting wiping of hot strength, acid and alkali-resistance, seawater corrosion resistance and multiple premium properties such as low temperature resistant, so it is the no asbestos brake linings of making as reinforcing material of automobile that the present invention adopts sisal fiber, stable friction factor, character of heat-fading is little, wears away low, little to the antithesis wearing and tearing, braking is steady, and noise is low, non-environmental-pollution in manufacturing and the use.
The specific embodiment
Embodiment 1: at first sisal fiber is smoothed out with the fingers along bunchy, being cut into length is the 10mm short sisal fibers; It is in 1: 1 absolute ethyl alcohol+benzole soln 30 hours that the sisal fiber that cuts is immersed in volume ratio; Sisal fiber after take out soaking is used absolute ethyl alcohol and washed with de-ionized water successively, and the pH value that is washed till sisal fiber is 7.5 to get final product; It is to boil taking-up in 3 hours in 75 ℃ in 10% the NaOH solution in the abundant pot of water that the sisal fiber that cleaned is immersed weight percent concentration, is cooled to room temperature; The pH value that is washed till sisal fiber with the sisal fiber after the washed with de-ionized water soda boiling is 7.0 and is neutralized to neutrality with sulfuric acid liquid; Again with ionized water clean to the pH value be 7.0; At last sisal fiber is put into baking oven and made standby sisal fiber raw material in 5.3 hours in 150 ℃ of processing; To standby sisal fiber raw material concentration is that 5% alcoholic solution soaked 2 hours, is not higher than under 100 ℃ the alcohol flood done in temperature then to get final product; Adopt material by wet type mixing, in high speed mixer with mass percent be: the acrylonitrile-butadiene rubber of the di-iron trioxide 5% of 35% phenolic resins, 35% standby sisal fiber raw material, 5% copper powder, 1% graphite powder, 2% molybdenum bisuphide, 5% polyacrylamide 2%, 5% silica and 5% barium sulfate mix makes raw material; Under the pressure of 2Mpa, the raw material that mixes is pressed into base substrate; The base substrate that presses is following dry 10 minutes at 110 ℃; At 190 ℃, pressure is under the situation of 20Mpa dried base substrate to be carried out hot-formingly, and the hot-forming time is 25 minutes; Hot-forming back is at 190 ℃, and heat treatment got final product in 1 hour.
Embodiment 2: at first sisal fiber is smoothed out with the fingers along bunchy, being cut into length is the 20mm short sisal fibers; It is in 1: 1 absolute ethyl alcohol+benzole soln 24 hours that the sisal fiber that cuts is immersed in volume ratio; Sisal fiber after take out soaking is used absolute ethyl alcohol and washed with de-ionized water successively, and the pH value that is washed till sisal fiber is 7.0 to get final product; It is to boil taking-up in 2 hours in 78 ℃ in 10% the NaOH solution in the abundant pot of water that the sisal fiber that cleaned is immersed weight percent concentration, is cooled to room temperature; The pH value that is washed till sisal fiber with the sisal fiber after the washed with de-ionized water soda boiling is 7.2 and is neutralized to neutrality with sulfuric acid liquid; Again with ionized water clean to the pH value be 7.0; At last sisal fiber is put into baking oven and made standby sisal fiber raw material in 5.3,6,5.8,4,4.9,5,5.7,4.5,5.5 hours in 158 ℃ of processing; To standby sisal fiber raw material concentration is that 5% alcoholic solution soaked 2.5 hours, is not higher than under 100 ℃ the alcohol flood done in temperature then to get final product; Adopt material by wet type mixing, in high speed mixer with mass percent be: 45% phenolic resins, 25% standby sisal fiber raw material, 6% copper powder, 2% graphite powder, 3% molybdenum bisuphide, 6% polytetrafluoroethylene (PTFE), 2% zinc oxide, 5% acrylonitrile-butadiene rubber, 5% tungsten carbide and 1% barium sulfate mix makes raw material; Under the pressure of 2.5Mpa, the raw material that mixes is pressed into base substrate; The base substrate that presses is following dry 15 minutes at 100 ℃; At 200 ℃, pressure is under the situation of 21Mpa dried base substrate to be carried out hot-formingly, and the hot-forming time is 15 minutes; Hot-forming back is at 200 ℃, and heat treatment got final product in 3 hours.
Embodiment 3: at first sisal fiber is smoothed out with the fingers along bunchy, being cut into length is the 15mm short sisal fibers; It is in 1: 1 absolute ethyl alcohol+benzole soln 25 hours that the sisal fiber that cuts is immersed in volume ratio; Sisal fiber after take out soaking is used absolute ethyl alcohol and washed with de-ionized water successively, and the pH value that is washed till sisal fiber is 7.2 to get final product; It is to boil taking-up in 2.6 hours in 76 ℃ in 10% the NaOH solution in the abundant pot of water that the sisal fiber that cleaned is immersed weight percent concentration, is cooled to room temperature; The pH value that is washed till sisal fiber with the sisal fiber after the washed with de-ionized water soda boiling is 7.4 and is neutralized to neutrality with sulfuric acid liquid; Again with ionized water clean to the pH value be 7.0; At last sisal fiber is put into baking oven and made standby sisal fiber raw material in 5.8 hours in 162 ℃ of processing; To standby sisal fiber raw material concentration is that 5% alcoholic solution soaked 3 hours, is not higher than under 100 ℃ the alcohol flood done in temperature then to get final product; Adopt material by wet type mixing, in high speed mixer with mass percent be: 36% phenolic resins, 26% standby sisal fiber raw material, 15% copper powder, 1% graphite powder, 2% molybdenum bisuphide, 5% polyacrylamide, 3% alundum (Al, 5% acrylonitrile-butadiene rubber, 5% carborundum and 2% barium sulfate mix makes raw material; Under the pressure of 2.3Mpa, the raw material that mixes is pressed into base substrate; The base substrate that presses is following dry 14 minutes at 90 ℃; At 195 ℃, pressure is under the situation of 22Mpa dried base substrate to be carried out hot-formingly, and the hot-forming time is 18 minutes; Hot-forming back is at 193 ℃, and heat treatment got final product in 2 hours.
Embodiment 4: at first sisal fiber is smoothed out with the fingers along bunchy, being cut into length is the 18mm short sisal fibers; It is in 1: 1 absolute ethyl alcohol+benzole soln 26 hours that the sisal fiber that cuts is immersed in volume ratio; Sisal fiber after take out soaking is used absolute ethyl alcohol and washed with de-ionized water successively, and the pH value that is washed till sisal fiber is 7.4 to get final product; It is to boil taking-up in 2.8 hours in 82 ℃ in 10% the NaOH solution in the abundant pot of water that the sisal fiber that cleaned is immersed weight percent concentration, is cooled to room temperature; The pH value that is washed till sisal fiber with the sisal fiber after the washed with de-ionized water soda boiling is 7.1 and is neutralized to neutrality with sulfuric acid liquid; Again with ionized water clean to the pH value be 7.0; At last sisal fiber is put into baking oven and made standby sisal fiber raw material in 4 hours in 167 ℃ of processing; To standby sisal fiber raw material concentration is that 5% alcoholic solution soaked 2.7 hours, is not higher than under 100 ℃ the alcohol flood done in temperature then to get final product; Adopt material by wet type mixing, in high speed mixer with mass percent be: the acrylonitrile-butadiene rubber of 35% phenolic resins, 28% standby sisal fiber raw material, 8% copper powder, 8% graphite powder, 2% molybdenum bisuphide, 5% polytetrafluoroethylene (PTFE), 2% di-iron trioxide 5%, 5% tungsten carbide and 2% barium sulfate mix makes raw material; Under the pressure of 2.2Mpa, the raw material that mixes is pressed into base substrate; The base substrate that presses is following dry 11 minutes at 93 ℃; At 198 ℃, pressure is under the situation of 23Mpa dried base substrate to be carried out hot-formingly, and the hot-forming time is 24 minutes; Hot-forming back is at 197 ℃, and heat treatment got final product in 1.5 hours.
Embodiment 5: at first sisal fiber is smoothed out with the fingers along bunchy, being cut into length is the 16mm short sisal fibers; It is in 1: 1 absolute ethyl alcohol+benzole soln 27 hours that the sisal fiber that cuts is immersed in volume ratio; Sisal fiber after take out soaking is used absolute ethyl alcohol and washed with de-ionized water successively, and the pH value that is washed till sisal fiber is 7.3 to get final product; It is to boil taking-up in 2.3 hours in 85 ℃ in 10% the NaOH solution in the abundant pot of water that the sisal fiber that cleaned is immersed weight percent concentration, is cooled to room temperature; The pH value that is washed till sisal fiber with the sisal fiber after the washed with de-ionized water soda boiling is 7.3 and is neutralized to neutrality with sulfuric acid liquid; Again with ionized water clean to the pH value be 7.0; At last sisal fiber is put into baking oven and made standby sisal fiber raw material in 4.9 hours in 165 ℃ of processing; To standby sisal fiber raw material concentration is that 5% alcoholic solution soaked 2.8 hours, is not higher than under 100 ℃ the alcohol flood done in temperature then to get final product; Adopt material by wet type mixing, in high speed mixer with mass percent be: 35% phenolic resins, 25% standby sisal fiber raw material, 5% copper powder, 1% graphite powder, 9% molybdenum bisuphide, 5% polytetrafluoroethylene (PTFE), 2% zinc oxide, 5% acrylonitrile-butadiene rubber, 5% carborundum and 8% barium sulfate mix makes raw material; Under the pressure of 2.1Mpa, the raw material that mixes is pressed into base substrate; The base substrate that presses is following dry 13 minutes at 102 ℃; At 196 ℃, pressure is under the situation of 24Mpa dried base substrate to be carried out hot-formingly, and the hot-forming time is 17 minutes; Hot-forming back is at 191 ℃, and heat treatment got final product in 2.6 hours.
Embodiment 6: at first sisal fiber is smoothed out with the fingers along bunchy, being cut into length is the 17mm short sisal fibers; It is in 1: 1 absolute ethyl alcohol+benzole soln 28 hours that the sisal fiber that cuts is immersed in volume ratio; Sisal fiber after take out soaking is used absolute ethyl alcohol and washed with de-ionized water successively, and the pH value that is washed till sisal fiber is 7.1 to get final product; It is to boil taking-up in 2.7 hours in 80 ℃ in 10% the NaOH solution in the abundant pot of water that the sisal fiber that cleaned is immersed weight percent concentration, is cooled to room temperature; The pH value that is washed till sisal fiber with the sisal fiber after the washed with de-ionized water soda boiling is 7.5 and is neutralized to neutrality with sulfuric acid liquid; Again with ionized water clean to the pH value be 7.0; At last sisal fiber is put into baking oven and made standby sisal fiber raw material in 5 hours in 155 ℃ of processing; To standby sisal fiber raw material concentration is that 5% alcoholic solution soaked 2.2 hours, is not higher than under 100 ℃ the alcohol flood done in temperature then to get final product; Adopt material by wet type mixing, in high speed mixer with mass percent be: 35% phenolic resins, 25% standby sisal fiber raw material, 5% copper powder, 2% graphite powder, 3% molybdenum bisuphide, 15% polyacrylamide, 2% alundum (Al, 5% acrylonitrile-butadiene rubber, 5% silica and 3% barium sulfate mix makes raw material; Under the pressure of 2.4Mpa, the raw material that mixes is pressed into base substrate; The base substrate that presses is following dry 12 minutes at 108 ℃; At 193 ℃, pressure is under the situation of 25Mpa dried base substrate to be carried out hot-formingly, and the hot-forming time is 22 minutes; Hot-forming back is at 194 ℃, and heat treatment got final product in 1.8 hours.
Embodiment 7: at first sisal fiber is smoothed out with the fingers along bunchy, being cut into length is the 14mm short sisal fibers; It is in 1: 1 absolute ethyl alcohol+benzole soln 25 hours that the sisal fiber that cuts is immersed in volume ratio; Sisal fiber after take out soaking is used absolute ethyl alcohol and washed with de-ionized water successively, and the pH value that is washed till sisal fiber is 7.0 to get final product; It is to boil taking-up in 2.9 hours in 79 ℃ in 10% the NaOH solution in the abundant pot of water that the sisal fiber that cleaned is immersed weight percent concentration, is cooled to room temperature; The pH value that is washed till sisal fiber with the sisal fiber after the washed with de-ionized water soda boiling is 7.0 and is neutralized to neutrality with sulfuric acid liquid; Again with ionized water clean to the pH value be 7.0; At last sisal fiber is put into baking oven and made standby sisal fiber raw material in 5.7 hours in 160 ℃ of processing; Adopt material by wet type mixing, in high speed mixer with mass percent be: 35% phenolic resins, 25% standby sisal fiber raw material, 5% copper powder, 1% graphite powder, 2% molybdenum bisuphide, 5% polytetrafluoroethylene (PTFE), 10% zinc oxide, 10% acrylonitrile-butadiene rubber, 6% tungsten carbide and 1% barium sulfate mix makes raw material; Under the pressure of 2.5Mpa, the raw material that mixes is pressed into base substrate; The base substrate that presses is following dry 15 minutes at 95 ℃; At 197 ℃, pressure is under the situation of 25Mpa dried base substrate to be carried out hot-formingly, and the hot-forming time is 21 minutes; Hot-forming back is at 195 ℃, and heat treatment got final product in 2.9 hours.
Embodiment 8: at first sisal fiber is smoothed out with the fingers along bunchy, being cut into length is the 12mm short sisal fibers; It is in 1: 1 absolute ethyl alcohol+benzole soln 29 hours that the sisal fiber that cuts is immersed in volume ratio; Sisal fiber after take out soaking is used absolute ethyl alcohol and washed with de-ionized water successively, and the pH value that is washed till sisal fiber is 7.5 to get final product; It is to boil taking-up in 3 hours in 77 ℃ in 10% the NaOH solution in the abundant pot of water that the sisal fiber that cleaned is immersed weight percent concentration, is cooled to room temperature; The pH value that is washed till sisal fiber with the sisal fiber after the washed with de-ionized water soda boiling is 7.4 and is neutralized to neutrality with sulfuric acid liquid; Again with ionized water clean to the pH value be 7.0; At last sisal fiber is put into baking oven and made standby sisal fiber raw material in 4.5 hours in 170 ℃ of processing; Adopt material by wet type mixing, in high speed mixer with mass percent be: 35% phenolic resins, 25% standby sisal fiber raw material, 5% copper powder, 1% graphite powder, 2% molybdenum bisuphide, 5% polyacrylamide, 2% alundum (Al, 15% acrylonitrile-butadiene rubber, 7% carborundum and 3% barium sulfate mix makes raw material; Under the pressure of 2Mpa, the raw material that mixes is pressed into base substrate; The base substrate that presses is following dry 13 minutes at 98 ℃; At 191 ℃, pressure is under the situation of 20Mpa dried base substrate to be carried out hot-formingly, and the hot-forming time is 20 minutes; Hot-forming back is at 198 ℃, and heat treatment got final product in 1.3 hours.
Embodiment 9: at first sisal fiber is smoothed out with the fingers along bunchy, being cut into length is the 13mm short sisal fibers; It is in 1: 1 absolute ethyl alcohol+benzole soln 30 hours that the sisal fiber that cuts is immersed in volume ratio; Sisal fiber after take out soaking is used absolute ethyl alcohol and washed with de-ionized water successively, and the pH value that is washed till sisal fiber is 7.3 to get final product; It is to boil taking-up in 2 hours in 83 ℃ in 10% the NaOH solution in the abundant pot of water that the sisal fiber that cleaned is immersed weight percent concentration, is cooled to room temperature; The pH value that is washed till sisal fiber with the sisal fiber after the washed with de-ionized water soda boiling is 7.5 and is neutralized to neutrality with sulfuric acid liquid; Again with ionized water clean to the pH value be 7.0; At last sisal fiber is put into baking oven and made standby sisal fiber raw material in 5.5 hours in 153 ℃ of processing; Adopt material by wet type mixing, in high speed mixer with mass percent be: 35% phenolic resins, 25% standby sisal fiber raw material, 5% copper powder, 1% graphite powder, 2% molybdenum bisuphide, 5% polytetrafluoroethylene (PTFE), 2% di-iron trioxide, 6% acrylonitrile-butadiene rubber, 15% tungsten carbide and 4% barium sulfate mix makes raw material; Under the pressure of 2.2Mpa, the raw material that mixes is pressed into base substrate; The base substrate that presses is following dry 10 minutes at 106 ℃; At 194 ℃, pressure is under the situation of 23Mpa dried base substrate to be carried out hot-formingly, and the hot-forming time is 16 minutes; Hot-forming back is at 196 ℃, and heat treatment got final product in 1.7 hours.
The present invention has adopted sisal fiber, because sisal fiber has that fiber is long, strong but pliable in texture, springiness, big, the wear-resisting wiping of hot strength, acid and alkali-resistance, seawater corrosion resistance and multiple premium properties such as low temperature resistant, thereby the frictional behaviour and the braking ability of brake facing have been determined to make; The Cu powder mainly is in order to improve thermal conductivity, to reduce wear and the stability that keeps high temperature friction coefficient; Graphite, MoS
2, impact and noise with the stability, the minimizing that improve coefficient of friction as kollag; SiO
2, ZnO, barium sulfate, iron oxide in order to regulate coefficient of friction, reduces abrasion.
Claims (4)
1, a kind of preparation method of brake facing is characterized in that:
1) fiber preliminary treatment
At first sisal fiber being cut into length is 10～20mm short sisal fibers;
Volume ratio by 1: 1 prepares absolute ethyl alcohol+benzole soln, and the sisal fiber that cuts is immersed in wherein 24～30 hours;
Sisal fiber after take out soaking is used absolute ethyl alcohol and washed with de-ionized water successively, and the pH value that is washed till sisal fiber is 7.5～7.0 to get final product;
It is to boil taking-up in 2～3 hours in 75～85 ℃ in 10% the NaOH solution in water-bath that the sisal fiber of above-mentioned cleaning is immersed weight percent concentration, is cooled to room temperature;
The pH value that is washed till sisal fiber with the sisal fiber after the washed with de-ionized water soda boiling is 7.5～7.0, and is neutralized to neutrality with sulfuric acid liquid; Again with ionized water clean to the pH value be 7.0;
At last sisal fiber is put into baking oven and made standby sisal fiber raw material in 4～6 hours in 150～170 ℃ of processing;
2) batch mixing
Adopt material by wet type mixing, in high speed mixer with mass percent be: 35%～45% phenolic resins, 25%～35% standby sisal fiber raw material, 5%～15% copper powder, 1%～8% graphite powder, 2～9% molybdenum bisuphide, 5%～15% macromolecule prepolymer, 2%～10% metal oxide, 5%～15% acrylonitrile-butadiene rubber, 5%～15% silica, tungsten carbide or carborundum and 1%～8% barium sulfate mix makes raw material;
3) preformed compact: under the pressure of 2～2.5Mpa, the raw material that mixes is pressed into base substrate;
4) drying: the base substrate that presses is following dry 10～15 minutes at 90～110 ℃;
5) hot-forming: at 190～200 ℃, pressure is under the situation of 20～25Mpa dried base substrate to be carried out hot-formingly, and the hot-forming time is 15～25 minutes;
6) heat treatment: hot-forming back is at 190～200 ℃, and heat treatment got final product in 1～3 hour.
2, according to the preparation method of the described brake facing of claim 1, it is characterized in that: said macromolecule prepolymer is polyacrylamide or polytetrafluoroethylene (PTFE).
3, according to the preparation method of the described brake facing of claim 1, it is characterized in that: said metal oxide is di-iron trioxide or zinc oxide or alundum (Al.
4, according to the preparation method of the described brake facing of claim 1, it is characterized in that: to standby sisal fiber raw material is that 5% alcoholic solution soaked 2～3 hours with concentration further, is not higher than under 100 ℃ in temperature then alcohol is dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310122203 CN1272162C (en) | 2003-12-22 | 2003-12-22 | Brake gasket and its preparng metod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310122203 CN1272162C (en) | 2003-12-22 | 2003-12-22 | Brake gasket and its preparng metod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1554530A CN1554530A (en) | 2004-12-15 |
| CN1272162C true CN1272162C (en) | 2006-08-30 |
Family
ID=34338632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310122203 Expired - Fee Related CN1272162C (en) | 2003-12-22 | 2003-12-22 | Brake gasket and its preparng metod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1272162C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332141C (en) * | 2005-03-09 | 2007-08-15 | 中信重型机械公司 | Method for preparing disc-brake shoe of mine hoist |
| CN101555915B (en) * | 2009-01-25 | 2013-06-12 | 瑞阳汽车零部件（仙桃）有限公司 | High-performance semi-metallic brake pad |
| CN101555916B (en) * | 2009-01-25 | 2013-06-19 | 瑞阳汽车零部件（仙桃）有限公司 | Corrosion resistant low noise semi-metallic brake pad |
| JP6135629B2 (en) * | 2014-09-25 | 2017-05-31 | 株式会社アドヴィックス | Friction material and friction material manufacturing method |
| CN105605131A (en) * | 2016-02-29 | 2016-05-25 | 天长市天航摩擦材料有限公司 | Manufacturing method of brake pad for heavy machine |
| JP6901865B2 (en) * | 2017-02-13 | 2021-07-14 | 曙ブレーキ工業株式会社 | A method for producing a thermosetting resin composition for a friction material, a friction material, and a thermosetting resin composition for a friction material. |
| CN107915951A (en) * | 2017-09-26 | 2018-04-17 | 上海国由复合材料科技有限公司 | High speed motor car grinding and preparation method |
-
2003
- 2003-12-22 CN CN 200310122203 patent/CN1272162C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1554530A (en) | 2004-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101613516B (en) | Friction material composition and friction material for preparing brake pad | |
| CN101285512B (en) | Production method for clutch surface adopting formaldehyde-phenol resin as cementing compound | |
| CN1272162C (en) | Brake gasket and its preparng metod | |
| CN102062169B (en) | Production method of ceramic automobile braking friction plate | |
| CN107849431B (en) | Friction material | |
| CN101177601A (en) | Method for preparing brake block by calcium sulfate crystal whisker | |
| CN102002883A (en) | Wet type paper-based friction material as well as preparation method and application thereof | |
| CN103122959B (en) | High-temperature wear-resisting ceramic composite fiber brake block | |
| CN101177490A (en) | Composite modified alkyd resin based friction material | |
| CN101655128A (en) | Clutch facing piece for automobile and production method thereof | |
| CN105909704B (en) | A kind of composite brake sheet of fine heat radiation property | |
| CN103256325A (en) | Vibration-damping, denoising and yaw low-speed braking pad and fabrication method thereof | |
| CN102206482A (en) | Preparation method of carbon fiber brake block | |
| CN110017342B (en) | Method for preparing automobile brake pad by utilizing surface modified basalt microfiber | |
| CN102691736B (en) | Environment-friendly high wear-resistant asbestos-free brake block and electromagnetic hot pressing technique | |
| CN102794912A (en) | Preparation method of friction material for vehicle brake disc | |
| CN112011020A (en) | Preparation process of friction-resistant high-temperature-resistant modified phenolic resin | |
| CN108559149A (en) | A kind of graphene enhancing clutch friction plate and its preparation process | |
| CN110285167B (en) | Asbestos-free organic friction material and product | |
| CN105605131A (en) | Manufacturing method of brake pad for heavy machine | |
| CN101402779A (en) | Non-asbestos drilling machine braking block material and manufacturing process therefor | |
| CN113929353B (en) | Brake pad and preparation method and application thereof | |
| CN104179858A (en) | Brake pad enhanced with smelting slag and fly ash inorganic fibers as well as preparation method of brake pad | |
| CN102585404A (en) | Modified polytetrafluoroethylene turning large plate | |
| CN105065626A (en) | Energy saving engine driving wheel with high transmission efficiency and surface treatment method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060830 Termination date: 20101222 |