CN103820078A - Method for preparing brake pad friction material by using rice and wheat straws - Google Patents
Method for preparing brake pad friction material by using rice and wheat straws Download PDFInfo
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Abstract
The invention discloses a method for preparing a brake pad friction material by using rice and wheat straws and relates to the technical field of composite materials. The brake pad friction material has the following formula: 15 percent of toughened fibers, 16 percent of modified resin, 14 percent of a friction increase agent, 9 percent of sulfur and tin powder, 1.6 percent of carbon black, 2.5 percent of zinc oxide, 8.9 percent of barium sulfate, 10 percent of rice and wheat straw carbon powder, 6 percent of aluminum hydroxide, 14 percent of modified li beads and 3 percent of zinc stearate. The materials are uniformly mixed and stirred, pressed in a mold and subjected to machining such as grinding and chamfering according to a technical requirement to obtain a braking pad. According to the method, the rice and wheat straws are used as raw materials to prepare carbon powder which replaces graphite in a friction material formula, so that the atmospheric pollution caused by severe combustion of straws in each year is alleviated, the production cost of the brake pad is reduced, and the brake performance and the braking effect are enhanced; the friction coefficient is stable; the brake pad is simple in structure, low in brake noise, environment-friendly and pollution-free.
Description
Technical field
The present invention relates to technical field of composite materials, relate in particular to a kind of method of making brake block friction material with rice wheat straw.
Background technology
Since reform and opening-up, national economy rapid growth, scientific and technical innovation, autonomous innovation have become the main flow of domestic industry development, and China's industry is just progressively to the future development of intensive style, energy-saving and emission-reduction, low-carbon (LC).Along with the raising day by day of people's living standard, also increasing to the demand of automobile.In recent years, the production and marketing quantity of China's automobile industry constantly increases, and China becomes an automobile production and marketing big country already.On automobile, most important security system is exactly breaking system, and all brake components are all safety members, and brake facing is one of link important in whole breaking system, directly has influence on the reliability of whole breaking system.Brake facing forms friction pair with the mutual friction of brake flange (drum) phase, produces braking moment, thereby reaches the object of vehicle deceleration brake.Brake facing in Motor vehicles mainly adopts the plurality of raw materials such as asbestos, steel fiber, resin to make, made brake facing have than great, thermal conductivity is low, poor heat stability, noise are high and the shortcoming such as non-refractory, has the defects such as brake poor reliability, quick abrasion, easy aging fracture, work-ing life be short.Secondly, prohibited use owing to containing carcinogenic substance in asbestos by country.At present, as the substitute products of asbestos brake lining, the general materials such as mineral fibre, charcoal fiber, steel fiber that adopt are made, but all in various degree there is the shortcomings such as fusing point is low, thermostability is low, radiating effect is poor, frictional coefficient is little, braking quality is poor, work-ing life is short, manufacturing cost is high, especially under frequently braking or scram state, the surface of friction of brake facing easily produces metal transfer and scuffing, causes the sensitivity of brake facing clutch to decline.Along with the development of technology, scale graphite, with little, high temperature resistant, the high heat conduction of its distinctive proportion, self-lubricating, the performance such as wear-resisting, stiff stability, anti-thermal shock, plasticity-that noise abatement is good and good by force, is applied in brake facing industry.No matter brake of motor-driven vehicle sheet is asbestos brake lining or non-asbestos brake block, all cooks low friction compound with graphite, and the first is in order to protect antithesis, and it two is in order to reduce noise.But because graphite Mineral resources reduce year by year, graphite market value constantly rises, cost increases, and enterprise is difficult to bear.The technician of R&D institution and enterprise is constantly exploring, is studying, wish to develop a kind of scale graphite friction materials substitute of superior performance, to meet the need of market, although make some progress, in practice, still exist the technical barrier not yet overcoming.
Summary of the invention
The object of the invention is to overcome above deficiency, a kind of method of making brake block friction material with rice wheat straw is provided, the method is made powdered carbon take rice wheat straw as starting material, to reduce the usage quantity of friction materials to scale graphite, strengthen braking quality and braking effect, reduce production cost, stable friction factor, simple in structure, brake noise is little, environment friendly and pollution-free.
The technical solution adopted for the present invention to solve the technical problems is as follows: one is made carbon dust friction materials with rice wheat straw, add following material composition with this friction materials: toughened fiber 15%, modified resin 16%, increase the agent 14% that rubs, sulphur+glass putty 9%, carbon black 1.6%, zinc oxide 2.5%, barium sulfate 8.9%, rice wheat straw powdered carbon 10%, aluminium hydroxide 6%, modification Li pearl 14%, Zinic stearas 3%, by above-mentioned materials mixing and stirring, in mould, suppress, temperature is controlled at 150 ℃～160 ℃, press pressing pressure is 18 MPas, exhaust 3 times, each 30 seconds, be incubated 300 seconds, postheat treatment temperature is 150 ℃～180 ℃, time determines according to workpiece size, general 4～12 hours, then while being cooled to 50 ℃, thermal treatment finishes, carry out grinding by processing requirement, the mechanical workouts such as chamfering, make and use straw of the present invention, the brake facing that straw carbon dust friction materials is made.
Described rice wheat straw powdered carbon is made as follows:
Rice wheat straw is selected materials, and---------height is pressed into plug, and---charing---pulverizes in pulverizing in oven dry in cleaning.
One, the rice wheat straw cleaning of selecting materials
Select the rice wheat straw of a term, mouldy, rotten can not use, and adopts after the rice wheat straw withdrawal of new harvesting earth and impurity on cleaning stalk.
Two, dry
Rice wheat straw after cleaning is exposed to the sun or dries under the sun.If dried, temperature is controlled to 45 ℃-55 ℃, drying time is controlled at 1 hour-1.5 hours, but can not make rice wheat straw surface browning look or fragility occurs, and must keep the original color of rice wheat straw and toughness.Detect by wheat and rice straw Moisture Meter, water content is controlled at 9%-12% left and right, and water content maximum can not exceed 13%.
Three, pulverize
Rice wheat straw after drying is pulverized, and after pulverizing, length is 0.1-0.2 centimetre of left and right, and the rice wheat straw after pulverizing must not outdoor storage, and with dryness storehouse, stock is put, and is strictly on guard against and again enters moisture content.
Four, height is pressed into plug
In rice wheat straw after pulverizing, add 5%20-40 order zonolite, and stir with stirrer, utilize the characteristic of vermiculite high-temperature expansion, increase the uniformity coefficient that plug is heated, thereby raising carbonization quality, then to be pressed into length with rod-made machine be that 10 centimetres, diameter are the plug of 6 centimetres of left and right.
Five, charing
1, adopt track stove or industry kiln to carry out charing, the humidity discharging phase rises to 130 ℃ from lighting a fire to furnace temperature, and the time is 4 hours.
2, elementary carbonization temperature, from 130 ℃ to 250 ℃, is opened gas blower, and to air blast in kiln, elementary carbonization time is 4 hours, and gas blower leaves 30 minutes, stops totally 4 times 30 minutes.
3, full carbonization temperature is from 250 ℃ to 500 ℃, and the heating-up time is 1.5 hours, and temperature rises to after 500 ℃, keep 2 hours, after 2 hours, then be warming up to 650 ℃, time is 4 hours, and during this, gas blower leaves 1 hour, stop 1 hour, totally 2 times, after 4 hours, be warming up to again 850 ℃, after close gas blower, after 1 hour, open ventilator, send into air and water vapour, note controlling steam vapour amount, keep 6 hours.
4, cooling is carried out for 7 hours from full carbonization temperature reaches 850 ℃, first uses a small amount of water slow cooling, and temperature stops water after dropping to 200 ℃, by cooling naturally in stove, when temperature in stove drops to after 100 ℃, opens fire door afterwards, carries out progressively cooling.
Six, grind
With pulverizer, the carbon rod after full charing is pulverized, be ground into after fine particle, add 5% fine particle talcum, uniform stirring, then grind into 100 object powder with Raymond mill.
Seven, test rating
Outward appearance: black, Vandyke brown
Order number: be less than or equal to 100 orders
Ash content: be less than 4%
Density: 1.4-1.5
Carbon content: 75%-78%
Moisture: be less than 3%
Mohs' hardness: be less than 2
Oil number: be greater than 50ml/g
Beneficial effect of the present invention: China's rice wheat straw aboundresources, cost recovery is low, replaces graphite with rice wheat straw powdered carbon, has reduced the topsoil bringing due to a large amount of crop straw burnings every year, and has reduced the production cost of brake facing.The method is made powdered carbon and is replaced graphite in friction material formulation take rice wheat straw as starting material, strengthened braking quality and braking effect, stable friction factor, and simple in structure, brake noise is little, environment friendly and pollution-free.
Embodiment
That the invention will be further described in conjunction with the embodiments below:
Following steps for manufacturing rice wheat straw powdered carbon friction materials:
One, the rice wheat straw cleaning of selecting materials
Select 1 ton of the rice wheat straw of a term, mouldy, can not using of rotting, after adopting the rice wheat straw of new harvesting to regain, cleans earth and impurity on stalk.
Two, dry
Rice wheat straw after cleaning is exposed to the sun or dries under the sun.If dried, temperature is controlled to 45 ± 1 ℃, the time is freely controlled, but can not make rice wheat straw surface discolouration, must keep the original color of rice wheat straw.Detect by wheat and rice straw Moisture Meter, water content is controlled at 10% left and right, and water content maximum can not exceed 13%.
Three, pulverize,
Rice wheat straw after drying is pulverized, and after pulverizing, length is 0.1-0.2 centimetre of left and right, and the rice wheat straw after pulverizing must not outdoor storage, forbids again to intake.
Four, height is pressed into plug
In rice wheat straw after pulverizing, add 5%20-40 order zonolite, and stir with stirrer, utilize the characteristic of vermiculite high-temperature expansion, increase the uniformity coefficient that plug is heated, thereby raising carbonization quality, then to be pressed into length with rod-made machine be that 10 centimetres, diameter are the plug of 6 centimetres of left and right.
Five, charing
1) adopt track stove or industry kiln to carry out charing, the humidity discharging phase rises to 130 ℃ from lighting a fire to furnace temperature, and the time is 4 hours.
2) elementary carbonization temperature, from 130 ℃ to 250 ℃, is opened gas blower, and to air blast in kiln, elementary carbonization time is 4 hours, and gas blower leaves 30 minutes, stops totally 4 times 30 minutes.
3) full carbonization temperature is from 250 ℃ to 500 ℃, and the heating-up time is 1.5 hours, and temperature rises to after 500 ℃, keep 2 hours, after 2 hours, then be warming up to 650 ℃, time is 4 hours, and during this, gas blower leaves 1 hour, stop 1 hour, totally 2 times, after 4 hours, be warming up to again 850 ℃, after close gas blower, after 1 hour, open ventilator, send into air and water vapour, note controlling steam vapour amount, keep 6 hours.
4) cooling is carried out for 7 hours from full carbonization temperature reaches 850 ℃, first uses a small amount of water slow cooling, and temperature stops water after dropping to 200 ℃, by cooling naturally in stove, when temperature in stove drops to after 100 ℃, opens fire door afterwards, carries out progressively cooling.
Six, grind
With pulverizer, the carbon rod after full charing is pulverized, be ground into after fine particle, add 5% fine particle talcum, uniform stirring, then grind into 100 object powder with Raymond mill.
Seven, test rating
Outward appearance: black, Vandyke brown
Order number: be less than or equal to 100 orders
Ash content: be less than 4%
Density: 1.4-1.5
Carbon content: 75%-78%
Moisture: be less than 3%
Mohs' hardness: be less than 2
Oil number: be greater than 50ml/g.
Make rice wheat straw carbon dust friction materials of the present invention in order to top method.
Get above-mentioned rice wheat straw powdered carbon 10g, add toughened fiber 15g, modified resin 16g, increase the agent 14g that rubs, sulphur+glass putty 9g, carbon black 1.6g, zinc oxide 2.5g, barium sulfate 8.9g, aluminium hydroxide 6.0g, modification Li pearl 14g, Zinic stearas 3g, by above-mentioned materials mixing and stirring, in mould, suppress, temperature is controlled at 150 ℃, press pressing pressure is 18 MPas, exhaust 3 times, each 30 seconds, be incubated 300 seconds, postheat treatment is 150 ℃, time is 4 hours, then while being cooled to 50 ℃, thermal treatment finishes, again the above-mentioned material making is carried out to grinding by processing requirement, the mechanical workouts such as chamfering, make and use straw of the present invention, the brake facing of straw carbon dust friction materials.
The brake facing making with rice wheat straw carbon dust friction materials of the present invention, tests on constant speed trier according to GB5763-2008 standard, and result is as following table:
From table, data can be found out, the brake facing that the present invention obtains, and in the temperature rise period, frictional coefficient is 0.3～0.4, and at temperature-fall period, frictional coefficient is 0.3～0.4, and wear rate is little, is up to state standards completely.In friction material formulation, add the brake facing product that this product 10% is made to detect and all meet GB5763-2008 and GB5764-1998 standard and domestic brake facing industry standard in Shandong good faith, Russia.The brake facing entrucking on Shanghai Volkswagen's Jetta automobile that utilizes this technology to produce is on probation, through getting over Taihang Mountain, Wangwu Shan Mountain, the Qinling Mountains, Wudang Mountain, 100000 kilometers of accumulative totals, in driving process, braking steadily, brake noise is little, the friction life-span is long, than the stable performance of graphite brake facing, is a kind of novel environment friendly product.This product is widely used in the friction materials of transportation and communication and various Working machine friction stopping devices.Play and regulate frictional coefficient, wear-resisting, lubricated, protection antithesis, lower the brake facing noise in when brake, the usage quantity of minimizing friction materials to scale graphite as friction materials.
Claims (2)
1. a method of making brake block friction material with rice wheat straw, the steps include:
Add following material composition with this friction materials: toughened fiber 15%, modified resin 16%, increase the agent 14% that rubs, sulphur+glass putty 9%, carbon black 1.6%, zinc oxide 2.5%, barium sulfate 8.9%, rice wheat straw powdered carbon 10%, aluminium hydroxide 6%, modification Li pearl 14%, Zinic stearas 3%, by above-mentioned materials mixing and stirring, in mould, suppress, temperature is controlled at 150 ℃～160 ℃, press pressing pressure is 18 MPas, exhaust 3 times, each 30 seconds, be incubated 300 seconds, postheat treatment temperature is 150 ℃～180 ℃, time determines according to workpiece size, general 4～12 hours, then while being cooled to 50 ℃, thermal treatment finishes, carry out grinding by processing requirement, the mechanical workouts such as chamfering, make and use straw of the present invention, the brake facing that straw carbon dust friction materials is made.
2. a kind of method of making brake block friction material with rice wheat straw according to claim 1, is characterized in that: described rice wheat straw powdered carbon is made as follows:
Rice wheat straw is selected materials, and---------height is pressed into plug, and---charing---pulverizes in pulverizing in oven dry in cleaning.
One, the rice wheat straw cleaning of selecting materials
Select the rice wheat straw of a term, mouldy, rotten can not use, and adopts after the rice wheat straw withdrawal of new harvesting earth and impurity on cleaning stalk.
Two, dry
Rice wheat straw after cleaning is exposed to the sun or dries under the sun.If dried, temperature is controlled to 45 ℃-55 ℃, drying time is controlled at 1 hour-1.5 hours, but can not make rice wheat straw surface browning look or fragility occurs, and must keep the original color of rice wheat straw and toughness.Detect by wheat and rice straw Moisture Meter, water content is controlled at 9%-12% left and right, and water content maximum can not exceed 13%.
Three, pulverize
Rice wheat straw after drying is pulverized, and after pulverizing, length is 0.1-0.2 centimetre of left and right, and the rice wheat straw after pulverizing must not outdoor storage, and with dryness storehouse, stock is put, and is strictly on guard against and again enters moisture content.
Four, height is pressed into plug
In rice wheat straw after pulverizing, add 5%20-40 order zonolite, and stir with stirrer, utilize the characteristic of vermiculite high-temperature expansion, increase the uniformity coefficient that plug is heated, thereby raising carbonization quality, then to be pressed into length with rod-made machine be that 10 centimetres, diameter are the plug of 6 centimetres of left and right.
Five, charing
1) adopt track stove or industry kiln to carry out charing, the humidity discharging phase rises to 130 ℃ from lighting a fire to furnace temperature, and the time is 4 hours.
2) elementary carbonization temperature, from 130 ℃ to 250 ℃, is opened gas blower, and to air blast in kiln, elementary carbonization time is 4 hours, and gas blower leaves 30 minutes, stops totally 4 times 30 minutes.
3) full carbonization temperature is from 250 ℃ to 500 ℃, and the heating-up time is 1.5 hours, and temperature rises to after 500 ℃, keep 2 hours, after 2 hours, then be warming up to 650 ℃, time is 4 hours, and during this, gas blower leaves 1 hour, stop 1 hour, totally 2 times, after 4 hours, be warming up to again 850 ℃, after close gas blower, after 1 hour, open ventilator, send into air and water vapour, note controlling steam vapour amount, keep 6 hours.
4) cooling is carried out for 7 hours from full carbonization temperature reaches 850 ℃, first uses a small amount of water slow cooling, and temperature stops water after dropping to 200 ℃, by cooling naturally in stove, when temperature in stove drops to after 100 ℃, opens fire door afterwards, carries out progressively cooling.
Six, grind
With pulverizer, the carbon rod after full charing is pulverized, be ground into after fine particle, add 5% fine particle talcum, uniform stirring, then grind into 100 object powder with Raymond mill.
Seven, test rating
Outward appearance: black, Vandyke brown
Order number: be less than or equal to 100 orders
Ash content: be less than 4%
Density: 1.4-1.5
Carbon content: 75%-78%
Moisture: be less than 3%
Mohs' hardness: be less than 2
Oil number: be greater than 50ml/g.
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| CN201210576364.5A CN103820078B (en) | 2012-12-27 | 2012-12-27 | Method for preparing brake pad friction material by using rice and wheat straws |
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| CN201210576364.5A CN103820078B (en) | 2012-12-27 | 2012-12-27 | Method for preparing brake pad friction material by using rice and wheat straws |
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| CN104610916A (en) * | 2015-02-11 | 2015-05-13 | 江苏金麦穗新能源科技股份有限公司 | Rice-wheat straw activated carbon powder toughening particle friction material and preparation method thereof |
| CN104626310A (en) * | 2015-02-11 | 2015-05-20 | 江苏金麦穗新能源科技股份有限公司 | Manufacturing method of rice straw composite fiber |
| CN104696399A (en) * | 2015-02-11 | 2015-06-10 | 江苏金麦穗新能源科技股份有限公司 | Rice and wheat straw active carbon powder artificial graphite friction material brake pad and manufacturing method thereof |
| CN104963975A (en) * | 2015-06-24 | 2015-10-07 | 黄晓霜 | Manufacturing process of cattle hide fiber brake pad |
| CN104976258A (en) * | 2015-06-24 | 2015-10-14 | 黄晓霜 | Environment-friendly brake pad |
| CN105001460A (en) * | 2015-06-24 | 2015-10-28 | 黄晓霜 | Manufacturing method for environment-friendly brake pad |
| CN105972131A (en) * | 2016-06-01 | 2016-09-28 | 江苏金麦穗新能源科技股份有限公司 | Production process of rigid rice and wheat straw frictional material used for brake pad |
| CN106046826A (en) * | 2016-06-01 | 2016-10-26 | 江苏金麦穗新能源科技股份有限公司 | Preparing technology for rice straw flexible friction material for brake pads |
| CN106090088A (en) * | 2016-06-01 | 2016-11-09 | 江苏金麦穗新能源科技股份有限公司 | A kind of wheat straw fibre brake block friction material production technology |
| CN106147707A (en) * | 2015-04-16 | 2016-11-23 | 盐城市天驰汽配有限公司 | A kind of method that black makes brake block without asbestos batch mixing |
| CN106147706A (en) * | 2015-04-16 | 2016-11-23 | 盐城市天驰汽配有限公司 | One makes brake block friction material manufacture method with white Vermiculitum |
| CN106224417A (en) * | 2016-08-16 | 2016-12-14 | 广西南宁胜祺安科技开发有限公司 | A kind of durable brake block adding activated carbon powder |
| CN106867450A (en) * | 2017-01-23 | 2017-06-20 | 陕西科技大学 | A kind of preparation method of zinc oxide nanowire/carbon cloth friction material |
| CN108412925A (en) * | 2018-03-20 | 2018-08-17 | 安徽三联学院 | A kind of material and material preparation method of automotive brake pads |
| CN114322536A (en) * | 2020-09-30 | 2022-04-12 | 江苏鑫浩新材料科技有限公司 | Belt type ceramsite sintering machine and belt type ceramsite sintering method |
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| CN104626310A (en) * | 2015-02-11 | 2015-05-20 | 江苏金麦穗新能源科技股份有限公司 | Manufacturing method of rice straw composite fiber |
| CN104696399A (en) * | 2015-02-11 | 2015-06-10 | 江苏金麦穗新能源科技股份有限公司 | Rice and wheat straw active carbon powder artificial graphite friction material brake pad and manufacturing method thereof |
| CN104610916B (en) * | 2015-02-11 | 2017-03-15 | 江苏金麦穗新能源科技股份有限公司 | A kind of rice wheat straw activated carbon powder toughness reinforcing particle friction material and preparation method thereof |
| CN104610916A (en) * | 2015-02-11 | 2015-05-13 | 江苏金麦穗新能源科技股份有限公司 | Rice-wheat straw activated carbon powder toughening particle friction material and preparation method thereof |
| CN104626310B (en) * | 2015-02-11 | 2016-08-17 | 江苏金麦穗新能源科技股份有限公司 | A kind of manufacture method of rice straw composite fiber |
| CN106147707A (en) * | 2015-04-16 | 2016-11-23 | 盐城市天驰汽配有限公司 | A kind of method that black makes brake block without asbestos batch mixing |
| CN106147706A (en) * | 2015-04-16 | 2016-11-23 | 盐城市天驰汽配有限公司 | One makes brake block friction material manufacture method with white Vermiculitum |
| CN105001460A (en) * | 2015-06-24 | 2015-10-28 | 黄晓霜 | Manufacturing method for environment-friendly brake pad |
| CN104976258A (en) * | 2015-06-24 | 2015-10-14 | 黄晓霜 | Environment-friendly brake pad |
| CN104963975A (en) * | 2015-06-24 | 2015-10-07 | 黄晓霜 | Manufacturing process of cattle hide fiber brake pad |
| WO2017206346A1 (en) * | 2016-06-01 | 2017-12-07 | 江苏金麦穗新能源科技股份有限公司 | Process for producing wheat-straw fiber brake-pad friction material |
| CN106090088A (en) * | 2016-06-01 | 2016-11-09 | 江苏金麦穗新能源科技股份有限公司 | A kind of wheat straw fibre brake block friction material production technology |
| CN105972131A (en) * | 2016-06-01 | 2016-09-28 | 江苏金麦穗新能源科技股份有限公司 | Production process of rigid rice and wheat straw frictional material used for brake pad |
| CN106046826A (en) * | 2016-06-01 | 2016-10-26 | 江苏金麦穗新能源科技股份有限公司 | Preparing technology for rice straw flexible friction material for brake pads |
| CN106224417A (en) * | 2016-08-16 | 2016-12-14 | 广西南宁胜祺安科技开发有限公司 | A kind of durable brake block adding activated carbon powder |
| CN106867450A (en) * | 2017-01-23 | 2017-06-20 | 陕西科技大学 | A kind of preparation method of zinc oxide nanowire/carbon cloth friction material |
| CN106867450B (en) * | 2017-01-23 | 2018-09-11 | 陕西科技大学 | A kind of preparation method of zinc oxide nanowire/carbon cloth friction material |
| CN108412925A (en) * | 2018-03-20 | 2018-08-17 | 安徽三联学院 | A kind of material and material preparation method of automotive brake pads |
| CN108412925B (en) * | 2018-03-20 | 2019-09-13 | 安徽三联学院 | A kind of material and material preparation method of automotive brake pads |
| CN114322536A (en) * | 2020-09-30 | 2022-04-12 | 江苏鑫浩新材料科技有限公司 | Belt type ceramsite sintering machine and belt type ceramsite sintering method |
| CN114322536B (en) * | 2020-09-30 | 2023-11-03 | 江苏鑫浩新材料科技有限公司 | Belt type ceramsite sintering machine and belt type ceramsite sintering method |
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