CN105567160A - Multi-fiber hybrid automobile friction material and preparation method thereof - Google Patents
Multi-fiber hybrid automobile friction material and preparation method thereof Download PDFInfo
- Publication number
- CN105567160A CN105567160A CN201410550154.8A CN201410550154A CN105567160A CN 105567160 A CN105567160 A CN 105567160A CN 201410550154 A CN201410550154 A CN 201410550154A CN 105567160 A CN105567160 A CN 105567160A
- Authority
- CN
- China
- Prior art keywords
- fiber
- friction material
- preparation
- cast iron
- multifilament
- 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
Landscapes
- Braking Arrangements (AREA)
Abstract
The invention discloses a multi-fiber hybrid automobile friction material. The multi-fiber hybrid automobile friction material is prepared from, by weight, alumina-silicate ceramic fibers, carbon fibers, steel fibers, aramid fibers, cast iron powder, copper powder, graphite, barium sulfate, phenolic resin, Y-3 packing and fly ash. The invention further discloses a preparation method of the multi-fiber hybrid automobile friction material. The preparation method comprises the particular steps that firstly, the carbon fibers and the aramid fibers are preprocessed, and a solid material is put into a grinder to be ground; secondly, the needed raw materials are weighed, mixed and then processed through hot press molding; lastly, heat treatment is performed, and then the multi-fiber hybrid automobile friction material is obtained. The ceramic fiber friction material is good in high temperature resistance and friction resistance stability and low in production cost; the preparation method is simple in step, easy to achieve and capable of achieving light weight of the friction material.
Description
Technical field
The invention belongs to Automotive Friction Material technical field, be specifically related to a kind of multifilament and mix Automotive Friction Material, the invention still further relates to the preparation method that this multifilament mixes Automotive Friction Material.
Background technology
Automotive Friction Material is the critical material in automotive brake, clutch coupling and friction gear, and its performance quality direct relation the reliability and stability of system cloud gray model.
The development of Automotive Friction Material roughly experienced by following three phases: before the mid-1970s, and brake system of car mostly is drum brake mode, adopts asbestos friction material more; The mid-1970s is to the mid-80, and the quickening of world energy sources crisis, car speed and the confirmation of asbestos hazardness, all impel automotive brake to disc type brake and asbestos-free friction material future development; So far, disc type brake and new-type friction material develop rapidly the mid-80, and achieve suitability for industrialized production.Along with the fast development of automotive industry, friction materials also improves comprehensive use properties according to the requirement of environmental protection, safety and speed superelevation comprehensively, the s-generation that has in succession been born and third generation semi-metallic, as low heat conductivity semi metal base material, low noise semi-metallic sill etc.Assorted fibre composite friction material is the important developing direction of of friction materials.Since the nineties, domestic and international investigator has not only extensively carried out the tribological Properties that assorted fibre strengthens polymer composites, and further study its abrasion mechanism.
China Automotive Friction Material research starting evening, in the kind of industrial foundation, state of the art, processing unit and product, quantity and performance etc., also has larger gap with World Developed Countries.There are some problems anxious to be resolved in current China Automotive Friction Material:
1. friction materials kind is single, can not meet the requirement of performance variation and seriation.
2. the correlative study of the formulation optimization of pair friction materials, composition optimizes and process optimization and controllability Study also not enough, production automation degree is also lower, and product specification is low, quality is unstable;
3. friction materials complex manufacturing, production cost is high and production efficiency is low;
Therefore, develop the friction materials that cost is low and performance is high, particularly adapt to the high speed of vehicle, light-weighted high temperature automotive friction materials is extremely urgent.
Summary of the invention
The object of this invention is to provide a kind of multifilament and mix Automotive Friction Material, solve existing Automotive Friction Material poor thermal conductivity, high-temperature comprehensive property is lower and preparation cost is high problem.
Another object of the present invention is to provide the preparation method that this multifilament mixes Automotive Friction Material.
The technical solution adopted in the present invention is, a kind of multifilament mixes Automotive Friction Material, it is characterized in that, according to weight percent, be made up of following feed composition: alumina-silicate ceramic fibre 6% ~ 10%, carbon fiber 2% ~ 5%, steel fiber 2% ~ 5%, aramid fiber 5% ~ 10%, cast iron powder 1% ~ 5%, copper powder 2% ~ 6%, graphite 1% ~ 5%, barium sulfate 2% ~ 8%, resol 15% ~ 20%, Y-3 filler 15% ~ 30%, flyash 10% ~ 15%, above each weight percentages of components sum is 100%.
Another technical scheme of the present invention is that a kind of multifilament mixes the preparation method of Automotive Friction Material, it is characterized in that, concrete steps are as follows:
Step 1, by the carbon fiber nitric acid dousing 24h ~ 36h of 40%, aramid fiber acetone is soaked 12h ~ 15h, rinse and moderate-speed mixer with clear water respectively, make it be velvet-like fiber, and fiber is dried at 50 DEG C ~ 70 DEG C temperature;
Step 2, resol, cast iron powder, copper powder, graphite, Y-3 filler, barium sulfate and flyash are put into shredder carry out milled processed, make to become 30 ~ 60 object dusty raw materials;
In step 3, the raw material that obtains in step 1 and step 2, take respectively according to weight percent: alumina-silicate ceramic fibre 6% ~ 10%, carbon fiber 6% ~ 12%, steel fiber 2% ~ 5%, aramid fiber 5% ~ 10%, cast iron powder 1% ~ 5%, copper powder 2% ~ 6%, graphite 1% ~ 5%, barium sulfate 2% ~ 8%, resol 12% ~ 20%, Y-3 filler 15% ~ 30%, flyash 15% ~ 25%, above each weight percentages of components sum is 100%;
Step 4, raw material step 3 taken are put into high speed mixer sequentially successively and are mixed;
Step 5, carry out hot-forming process to the mixing raw material that step 4 obtains, hot pressing pressure is 10MPa, and temperature is 80 DEG C ~ 100 DEG C, dwell time 8min ~ 15min;
Step 6, the material obtained in step 5 is put into equipment for Heating Processing, at 150 DEG C ~ 170 DEG C temperature, solidification heat process 10h ~ 12h, after naturally cooling, gets product.
In step 1, the quality index of carbon fiber is: staple length 8mm ~ 15mm, and filament diameter is 7um, tensile strength>=250kg/mm
2, extension at break>=1%, carbon content>=90%; The quality index of aramid fiber is: staple length 6mm ~ 8mm, density 1.44g/cm
3, filament diameter is 12um, decomposition temperature about 500 DEG C, thermal linear expansion coefficient-3.5 × 10
-6/ K, elongation at break 3.3%.
In step 4, raw material order of addition is: first add aluminum silicate fiber, copper powder, barium sulfate, cast iron powder, after stirring 3min ~ 5min, adds aramid fiber, stirs 10min ~ 15min, finally adds surplus stock and stirs 5 ~ 8min; Described high speed mixer spindle revolutions is 1000rpm.
In step 5, pressure maintaining period should discharge pressure and low molecular weight gas several times, and the timed interval is 2min ~ 3min.
Multifilament of the present invention mixes Automotive Friction Material and has the following advantages:
1, select multiple fiber as the strongthener of Automotive Friction Material, between each fiber, have good miscellaneous effects, achieve the lightweight of friction materials, and the stable friction factor of friction materials can be significantly improved.
2, the flyash that selection price is very cheap and particular fillers Y-3, as conditioning agent, greatly reduce the production cost of Automotive Friction Material.
Preparation method of the present invention is simple, easily realizes.
Accompanying drawing explanation
Fig. 1 is preparation technology's schema that multifilament of the present invention mixes Automotive Friction Material;
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of multifilament of the present invention mixes Automotive Friction Material and preparation method thereof, according to weight percent, is made up of following feed composition: alumina-silicate ceramic fibre 6% ~ 10%, carbon fiber 6% ~ 12%, steel fiber 2% ~ 5%, aramid fiber 5% ~ 10%, cast iron powder 1% ~ 5%, copper powder 2% ~ 6%, graphite 1% ~ 5%, barium sulfate 2% ~ 8%, resol 12% ~ 20%, Y-3 filler 15% ~ 30%, flyash 15% ~ 25%, above each weight percentages of components sum is 100%.
Steel fiber and aramid fiber, between carbon fiber and aluminum silicate fiber, there is obvious confounding effect, frictional coefficient is played a very important role; Carbon fiber, aramid fiber self, due to its good characteristic, also has larger effect to frictional coefficient; Aluminum silicate fiber is comparatively remarkable on the impact of wear rate, and the increase of its content is conducive to frictional coefficient and improves, but when content strengthens further, the help too not large to the raising of frictional coefficient, but causes the increase of wear rate; The consumption of carbon fiber has dual character, and when the lower scope of content, show the increase with fibre content, the frictional coefficient of material and wear rate decline; When content higher range, the increase frictional coefficient shown along with fibre content increases, the slightly increase of wear rate;
The impact of resin on wear rate has the effect of two aspects: when amount of resin is excessive, disadvantageous concerning wear rate, and amount of resin is very few, but fiber and filler is caused well not to be bondd, make them very easily produce in wear process to come off, therefore cause wear rate to increase, select resin content appropriate to the occasion moderate.
The structure of Y-3 filler and graphite are a bit close, are a kind of excellent fillers, and its content increase can improve stability and the wear resisting property of frictional coefficient; Flyash can play the effect increasing frictional coefficient, the flyash of lower aq is not obvious on the impact of friction materials tribological property, the cost of friction materials can be reduced, the wear rate that material is larger but too high levels can cause friction, therefore appropriate flyash can use as the void fillers of friction materials.
Embodiment 1
Step 1, by the carbon fiber nitric acid dousing 30h of 40%, aramid fiber acetone is soaked 15h, rinse and moderate-speed mixer with clear water respectively, make it be velvet-like fiber, and fiber is dried at 60 DEG C of temperature;
Step 2, resol, cast iron powder, copper powder, graphite, Y-3 filler, barium sulfate and flyash are put into shredder carry out milled processed, make to become 40 object dusty raw materials;
In step 3, the raw material that obtains in step 1 and step 2, take respectively according to weight percent: alumina-silicate ceramic fibre 6g, carbon fiber 3g, steel fiber 2g, aramid fiber 8g, cast iron powder 4g, copper powder 3g, graphite 4g, barium sulfate 7g, resol 20g, Y-3 filler 28g, flyash 15g;
Step 4, raw material step 3 taken are put into high speed mixer sequentially successively and are mixed;
Step 5, carry out hot-forming process to the mixing raw material that step 4 obtains, hot pressing pressure is 10MPa, and temperature is 80 DEG C, dwell time 15min;
Step 6, the material obtained in step 5 is put into equipment for Heating Processing, solidification heat process 10h at 170 DEG C of temperature, after naturally cooling, gets product.
Embodiment 2
Step 1, by the carbon fiber nitric acid dousing 24h of 40%, aramid fiber acetone is soaked 12h, rinse and moderate-speed mixer with clear water respectively, make it be velvet-like fiber, and fiber is dried at 70 DEG C of temperature;
2, resol, cast iron powder, copper powder, graphite, Y-3 filler, barium sulfate and flyash are put into shredder and carry out milled processed, make to become 60 object dusty raw materials;
In step 3, the raw material that obtains in step 1 and step 2, take respectively according to weight percent: alumina-silicate ceramic fibre 10g, carbon fiber 12g, steel fiber 3g, aramid fiber 8g, cast iron powder 2g, copper powder 6g, graphite 2g, barium sulfate 6g, resol 12g, Y-3 filler 20g, flyash 19g;
Step 4, raw material step 3 taken are put into high speed mixer sequentially successively and are mixed;
Step 5, carry out hot-forming process to the mixing raw material that step 4 obtains, hot pressing pressure is 10MPa, and temperature is 100 DEG C, dwell time 8min;
Step 6, the material obtained in step 5 is put into equipment for Heating Processing, solidification heat process 12h at 150 DEG C of temperature, after naturally cooling, gets product.
Embodiment 3
Step 1, by the carbon fiber nitric acid dousing 36h of 40%, aramid fiber acetone is soaked 13h, rinse and moderate-speed mixer with clear water respectively, make it be velvet-like fiber, and fiber is dried at 50 DEG C of temperature;
Step 2, resol, cast iron powder, copper powder, graphite, Y-3 filler, barium sulfate and flyash are put into shredder carry out milled processed, make to become 30 object dusty raw materials;
In step 3, the raw material that obtains in step 1 and step 2, take respectively according to weight percent: alumina-silicate ceramic fibre 8g, carbon fiber 9g, steel fiber 3g, aramid fiber 8g, cast iron powder 3g, copper powder 6g, graphite 3g, barium sulfate 7g, resol 15g, Y-3 filler 17g, flyash 21g;
Step 4, raw material step 3 taken are put into high speed mixer sequentially successively and are mixed;
Step 5, carry out hot-forming process to the mixing raw material that step 4 obtains, hot pressing pressure is 10MPa, and temperature is 90 DEG C, dwell time 12min;
Step 6, the material obtained in step 5 is put into equipment for Heating Processing, solidification heat process 11h at 160 DEG C of temperature, after naturally cooling, gets product.
Claims (5)
1. multifilament mixes an Automotive Friction Material, it is characterized in that, according to weight percent, be made up of following feed composition: alumina-silicate ceramic fibre 6% ~ 10%, carbon fiber 2% ~ 5%, steel fiber 2% ~ 5%, aramid fiber 5% ~ 10%, cast iron powder 1% ~ 5%, copper powder 2% ~ 6%, graphite 1% ~ 5%, barium sulfate 2% ~ 8%, resol 15% ~ 20%, Y-3 filler 15% ~ 30%, flyash 10% ~ 15%, above each weight percentages of components sum is 100%.
2. multifilament mixes a preparation method for Automotive Friction Material, it is characterized in that, concrete steps are as follows:
Step 1, by the carbon fiber nitric acid dousing 24h ~ 36h of 40%, aramid fiber acetone is soaked 12h ~ 15h, rinse and moderate-speed mixer with clear water respectively, make it be velvet-like fiber, and fiber is dried at 50 DEG C ~ 70 DEG C temperature;
Step 2, resol, cast iron powder, copper powder, graphite, Y-3 filler, barium sulfate and flyash are put into shredder carry out milled processed, make to become 30 ~ 60 object dusty raw materials;
In step 3, the raw material that obtains in step 1 and step 2, take respectively according to weight percent: alumina-silicate ceramic fibre 6% ~ 10%, carbon fiber 6% ~ 12%, steel fiber 2% ~ 5%, aramid fiber 5% ~ 10%, cast iron powder 1% ~ 5%, copper powder 2% ~ 6%, graphite 1% ~ 5%, barium sulfate 2% ~ 8%, resol 12% ~ 20%, Y-3 filler 15% ~ 30%, flyash 15% ~ 25%, above each weight percentages of components sum is 100%;
Step 4, raw material step 3 taken are put into high speed mixer sequentially successively and are mixed;
Step 5, carry out hot-forming process to the mixing raw material that step 4 obtains, hot pressing pressure is 10MPa, and temperature is 80 DEG C ~ 100 DEG C, dwell time 8min ~ 15min;
Step 6, the material obtained in step 5 is put into equipment for Heating Processing, at 150 DEG C ~ 170 DEG C temperature, solidification heat process 10h ~ 12h, after naturally cooling, gets product.
3. mix the preparation method of Automotive Friction Material according to multifilament described in claim 2, it is characterized in that, in step 1, the quality index of carbon fiber is: staple length 8mm ~ 15mm, and filament diameter is 7um, tensile strength>=250kg/mm
2, extension at break>=1%, carbon content>=90%; The quality index of aramid fiber is: staple length 6mm ~ 8mm, density 1.44g/cm
3, filament diameter is 12um, decomposition temperature about 500 DEG C, thermal linear expansion coefficient-3.5 × 10
-6/ K, elongation at break 3.3%.
4. the preparation method of Automotive Friction Material is mixed according to multifilament described in claim 2, it is characterized in that, in step 4, raw material order of addition is: first add aluminum silicate fiber, copper powder, barium sulfate, cast iron powder, after stirring 3min ~ 5min, add aramid fiber, stir 10min ~ 15min, finally add surplus stock and stir 5 ~ 8min; Described high speed mixer spindle revolutions is 1000rpm.
5. mix the preparation method of Automotive Friction Material according to multifilament described in claim 2, it is characterized in that, in step 5, pressure maintaining period should discharge pressure and low molecular weight gas several times, and the timed interval is 2min ~ 3min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550154.8A CN105567160A (en) | 2014-10-15 | 2014-10-15 | Multi-fiber hybrid automobile friction material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550154.8A CN105567160A (en) | 2014-10-15 | 2014-10-15 | Multi-fiber hybrid automobile friction material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105567160A true CN105567160A (en) | 2016-05-11 |
Family
ID=55877817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410550154.8A Pending CN105567160A (en) | 2014-10-15 | 2014-10-15 | Multi-fiber hybrid automobile friction material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105567160A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051010A (en) * | 2016-08-15 | 2016-10-26 | 合肥万向钱潮汽车零部件有限公司 | Abrasion-resistant automobile brake pad |
| CN106566471A (en) * | 2016-09-21 | 2017-04-19 | 南京航空航天大学 | Phenolic resin based friction material for ultrasonic motors and preparation method thereof |
| CN109400030A (en) * | 2018-12-20 | 2019-03-01 | 兰州新生科技有限责任公司 | High temperature resistant geo-polymer based composites and preparation method thereof for brake block |
-
2014
- 2014-10-15 CN CN201410550154.8A patent/CN105567160A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051010A (en) * | 2016-08-15 | 2016-10-26 | 合肥万向钱潮汽车零部件有限公司 | Abrasion-resistant automobile brake pad |
| CN106566471A (en) * | 2016-09-21 | 2017-04-19 | 南京航空航天大学 | Phenolic resin based friction material for ultrasonic motors and preparation method thereof |
| CN109400030A (en) * | 2018-12-20 | 2019-03-01 | 兰州新生科技有限责任公司 | High temperature resistant geo-polymer based composites and preparation method thereof for brake block |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103410893B (en) | A kind of composition brake shoe for urban rail vehicle and manufacture method thereof | |
| CN103059805B (en) | Organic fiber friction material composition for brake pad | |
| CN103122959B (en) | High-temperature wear-resisting ceramic composite fiber brake block | |
| CN105111675B (en) | A kind of calcium carbonate crystal whisker reinforced resin-Rubber base friction material and preparation method thereof | |
| CN103059808B (en) | Low-fading-rate NAO friction material and preparation method thereof | |
| CN105567160A (en) | Multi-fiber hybrid automobile friction material and preparation method thereof | |
| CN101487505A (en) | Asbestos-free metal-free composite lubrication type drum-shaped brake block for cars and method for producing the same | |
| CN103185095B (en) | A kind of for friction sheet for wind energy generator yaw device and manufacture method thereof | |
| CN101769353B (en) | Yaw brake block and preparation method thereof | |
| CN105402292A (en) | Automobile brake pad and preparation method thereof | |
| CN102533221B (en) | Disc-type friction material and manufacturing method thereof | |
| CN102910916A (en) | Anhydrous press-in slurry used for blast furnace | |
| CN108708922B (en) | A kind of environment-friendly type high performance composite brake sheet material and preparation method | |
| CN106045380A (en) | Low-noise ceramic brake pad and preparation method thereof | |
| CN101514252B (en) | Whisker composite material for reinforcing automobile brake friction and a method for producing the same | |
| CN101435475A (en) | Composite material brake block special for high-speed train | |
| CN104529321A (en) | Layered composite phase change energy storage building material | |
| CN102003480B (en) | Wind driven generator damping friction braking plate and preparation method thereof | |
| CN111995839B (en) | Synthetic friction belt for point switch and manufacturing method thereof | |
| CN103602038A (en) | Preparation method of high-heat-conductivity phenol aldehyde resin-base high polymer material | |
| CN102691736A (en) | Environment-friendly high wear-resistant asbestos-free brake block and electromagnetic hot pressing technique | |
| CN107286570A (en) | Yaw brake block and preparation method thereof | |
| CN102010564A (en) | Method for preparing carbon fiber brake lining | |
| CN105972132A (en) | Pteroceltis tatarinowii bark fiber reinforced environment-friendly brake pad | |
| CN105422700A (en) | Steel fiber friction plate of brake and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160511 |
|
| WD01 | Invention patent application deemed withdrawn after publication |