CN104803375A - Preparation method of rice and wheat straw active carbon powder synthetic graphite friction material - Google Patents
Preparation method of rice and wheat straw active carbon powder synthetic graphite friction material Download PDFInfo
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- CN104803375A CN104803375A CN201510070257.9A CN201510070257A CN104803375A CN 104803375 A CN104803375 A CN 104803375A CN 201510070257 A CN201510070257 A CN 201510070257A CN 104803375 A CN104803375 A CN 104803375A
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- wheat straw
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- 239000010902 straw Substances 0.000 title claims abstract description 72
- 239000002783 friction material Substances 0.000 title claims abstract description 21
- 229910021383 artificial graphite Inorganic materials 0.000 title claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 241000209140 Triticum Species 0.000 title abstract description 7
- 235000021307 Triticum Nutrition 0.000 title abstract description 7
- 235000007164 Oryza sativa Nutrition 0.000 title abstract 5
- 235000009566 rice Nutrition 0.000 title abstract 5
- 238000002360 preparation method Methods 0.000 title abstract 3
- 240000007594 Oryza sativa Species 0.000 title 1
- 230000000694 effects Effects 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 238000003763 carbonization Methods 0.000 claims abstract description 9
- 238000000227 grinding Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000005087 graphitization Methods 0.000 claims abstract description 5
- 240000000359 Triticum dicoccon Species 0.000 claims description 63
- 238000010792 warming Methods 0.000 claims description 32
- 239000000843 powder Substances 0.000 claims description 19
- 239000003610 charcoal Substances 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 239000010419 fine particle Substances 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 238000010298 pulverizing process Methods 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 238000003306 harvesting Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000000454 talc Substances 0.000 claims description 4
- 229910052623 talc Inorganic materials 0.000 claims description 4
- 235000012222 talc Nutrition 0.000 claims description 4
- 241000209094 Oryza Species 0.000 abstract 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- OKTJSMMVPCPJKN-YPZZEJLDSA-N carbon-10 atom Chemical compound [10C] OKTJSMMVPCPJKN-YPZZEJLDSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a preparation method of a rice and wheat straw active carbon powder synthetic graphite friction material. The preparation method comprises following steps: step 1, material selection and cleaning of rice and wheat straw; step 2, drying; step 3, smashing; step 4, high pressure briquetting; step 5, carbonization; step 6, graphitization; and step 7, grinding. The rice and wheat straw active carbon powder synthetic graphite friction material is capable of increasing toughness of friction materials such as brake pads, improving performance and braking effects of the friction materials, ensuring stability of the friction coefficient of the friction materials such as brake pads, and reducing noise generated by friction, and is friendly to the environment; no pollution is caused; and using range of rice and wheat straw is widened.
Description
Technical field
The present invention relates to a kind of making method of rice wheat straw activity charcoal powder synthetic graphite friction materials, belong to chemical field.
Background technology
The annual agricultural crop straw output of China reaches more than 700,000,000 tons, but these resources, and except minute quantity is with for mostly being burned except feed, this not only causes the huge waste of resource but also causes serious environmental pollution.Containing a large amount of carbon sources in rice wheat straw, there is higher utility value, such as, obtained the material replacing scale graphite by special process, make conjugated fibre etc.Such as our company discloses a kind of method that rice wheat straw makes brake block friction material in patent CN 103820078 A, fills a prescription as follows: toughened fiber 15%, modified resin 16%, increase and to rub agent 14%, 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%.The method is that graphite in powdered carbon replacement friction material formulation made by starting material with rice wheat straw, reduce every year due to topsoil that a large amount of crop straw burning brings, and reduce the production cost of brake facing, enhance braking quality and braking effect, stable friction factor, structure is simple, and brake noise is little, environment friendly and pollution-free.But the making method of described carbon dust is not disclosed.
Summary of the invention
The object of the invention is to provide a kind of making method of rice wheat straw activity charcoal powder synthetic graphite friction materials, obtained Wheat Straw activity charcoal powder synthetic graphite friction materials can increase the toughness of the friction materialss such as brake facing, promote its performance and braking effect, ensure that the stable of the friction materials frictional coefficient such as brake facing, the noise produced when reducing friction and environment friendly and pollution-free, that has widened rice wheat straw utilizes channel simultaneously.
Technical scheme of the present invention is for achieving the above object:
A making method for rice wheat straw activity charcoal powder synthetic graphite friction materials, is characterized in that, comprise the steps:
Step one, rice wheat straw are selected materials cleaning: collect new harvesting or the rice wheat straw in the term, remove rice wheat straw that is mouldy, that rot, the earth on cleaning stalk and impurity;
Step 2, oven dry: the rice wheat straw after cleaning is carried out being exposed to the sun or drying; During oven dry, bake out temperature is 45 DEG C-55 DEG C; Be exposed to the sun or dry to rice wheat straw water content be 9%-13%;
Step 3, pulverizing: the rice wheat straw after drying is pulverized as length is the rice wheat straw powder of 0.1-0.2 centimetre, stores in drying place;
Step 4, high pressure briquetting: by the rice wheat straw after pulverizing, put in mould, be pressed into rice wheat straw block;
Step 5, carbonization:
1) rice wheat straw block is put into the charing of oxygen deprivation stove, interval 0.8-1.2cm between rice wheat straw block;
2) adopt the charing of oxygen deprivation stove, the humidity discharging phase rises to 130 DEG C from igniting to furnace temperature, and the time is 4 hours;
3) elementary charing: be warming up to 250 DEG C, open gas blower, to air blast in kiln, elementary carbonization time is 4 hours, and gas blower leaves 30 minutes, stops 30 minutes, totally four times;
4) entirely carbonize: be warming up to 500 DEG C, the heating-up time is 1.5 hours, after temperature rises to 500 DEG C, keep 2 hours, then be warming up to 650 DEG C, the time is 4 hours, when being warming up to 650 DEG C, gas blower leaves 1 hour, stops 1 hour, circulate 2 times, be warming up to 850 DEG C again after 4 hours, after 1 hour, open ventilator, send into air and water vapour, progressively cool, Formed, came out of the stove after 6 hours;
Step 6, greying: put into graphitizing furnace after the charcoal cooling after coming out of the stove, carry out graphitization processing; First be warming up to 260-400 DEG C with 1-5 DEG C/minute of speed, pressurising 2-6Mpa, then be warming up to 350-550 DEG C with 1-2 DEG C/minute of speed, constant temperature 1-2 hour, then under argon shield, be warming up to 2400-2600 DEG C carry out greying, naturally cooling;
Step 7, grinding: the powdered carbon after greying is broken into fine particle, then add the fine particle talcum of 5%, uniform stirring, then with grinding into 100 object powder.
Further technical scheme, be exposed to the sun in described step 2 or dry to rice wheat straw water content be 9%-12%.
Further technical scheme, in described step 4, rice wheat straw is pressed into the right cylinder block of 150 centimetres x150 centimetre.
The obtained Wheat Straw activity charcoal powder synthetic graphite friction materials that the present invention obtains can increase the toughness of the friction materialss such as brake facing, promote its performance and braking effect, ensure that the stable of the friction materials frictional coefficient such as brake facing, the noise produced when reducing friction and environment friendly and pollution-free, that has widened rice wheat straw utilizes channel simultaneously.
Embodiment
Embodiment 1
Make a kind of making method of rice wheat straw activity charcoal powder synthetic graphite friction materials as follows, comprise the steps:
Step one, rice wheat straw are selected materials cleaning: collect new harvesting or the rice wheat straw in the term, remove rice wheat straw that is mouldy, that rot, the earth on cleaning stalk and impurity;
Step 2, oven dry: the rice wheat straw after cleaning is carried out being exposed to the sun or drying; During oven dry, bake out temperature is 45 DEG C-55 DEG C, be exposed to the sun or dry to rice wheat straw water content be 9%-13%;
Step 3, pulverizing: the rice wheat straw after drying is pulverized as length is the rice wheat straw powder of 0.1-0.2 centimetre, stores in drying place;
Step 4, high pressure briquetting: by the rice wheat straw after pulverizing, put in mould, be pressed into rice wheat straw block;
Step 5, carbonization:
1) rice wheat straw block is put into the charing of oxygen deprivation stove, interval 0.8-1.2cm between rice wheat straw block;
2) adopt the charing of oxygen deprivation stove, the humidity discharging phase rises to 130 DEG C from igniting to furnace temperature, and the time is 4 hours;
3) elementary charing: be warming up to 250 DEG C, open gas blower, to air blast in kiln, elementary carbonization time is 4 hours, and gas blower leaves 30 minutes, stops 30 minutes, totally four times;
4) entirely carbonize: be warming up to 500 DEG C, the heating-up time is 1.5 hours, after temperature rises to 500 DEG C, keep 2 hours, then be warming up to 650 DEG C, the time is 4 hours, when being warming up to 650 DEG C, gas blower leaves 1 hour, stops 1 hour, circulate 2 times, be warming up to 850 DEG C again after 4 hours, after 1 hour, open ventilator, send into air and water vapour, progressively cool, Formed, came out of the stove after 6 hours;
Step 6, greying: put into graphitizing furnace after the charcoal cooling after coming out of the stove, carry out graphitization processing; First be warming up to 260 DEG C with 1-5 DEG C/minute of speed, pressurising 2-6Mpa, then be warming up to 350 DEG C with 1-2 DEG C/minute of speed, constant temperature 1-2 hour, then under argon shield, be warming up to 2400-2600 DEG C carry out greying, naturally cooling;
Step 7, grinding: the powdered carbon after greying is broken into fine particle, then add the fine particle talcum of 5%, uniform stirring, then with grinding into 100 object powder.
Embodiment 2
Step one, rice wheat straw are selected materials cleaning: collect new harvesting or the rice wheat straw in the term, remove rice wheat straw that is mouldy, that rot, the earth on cleaning stalk and impurity;
Step 2, oven dry: the rice wheat straw after cleaning is carried out being exposed to the sun or drying; During oven dry, bake out temperature is 45 DEG C-55 DEG C, and drying time is 1-1.5 hour; Be exposed to the sun or dry to rice wheat straw water content be 9%-12%;
Step 3, pulverizing: the rice wheat straw after drying is pulverized as length is the rice wheat straw powder of 0.1-0.2 centimetre, stores in drying place;
Step 4, high pressure briquetting: by the rice wheat straw after pulverizing, put in mould, be pressed into rice wheat straw block;
Step 5, carbonization:
1) rice wheat straw block is put into the charing of oxygen deprivation stove, interval 0.8-1.2cm between rice wheat straw block;
2) adopt the charing of oxygen deprivation stove, the humidity discharging phase rises to 130 DEG C from igniting to furnace temperature, and the time is 4 hours;
3) elementary charing: be warming up to 250 DEG C, open gas blower, to air blast in kiln, elementary carbonization time is 4 hours, and gas blower leaves 30 minutes, stops 30 minutes, totally four times;
4) entirely carbonize: be warming up to 500 DEG C, the heating-up time is 1.5 hours, after temperature rises to 500 DEG C, keep 2 hours, then be warming up to 650 DEG C, the time is 4 hours, when being warming up to 650 DEG C, gas blower leaves 1 hour, stops 1 hour, circulate 2 times, be warming up to 850 DEG C again after 4 hours, after 1 hour, open ventilator, send into air and water vapour, progressively cool, Formed, came out of the stove after 6 hours;
Step 6, greying: put into graphitizing furnace after the charcoal cooling after coming out of the stove, carry out graphitization processing; First be warming up to 400 DEG C with 1-5 DEG C/minute of speed, pressurising 2-6Mpa, then be warming up to 550 DEG C with 1-2 DEG C/minute of speed, constant temperature 1-2 hour, then under argon shield, be warming up to 2400-2600 DEG C carry out greying, naturally cooling;
Step 7, grinding: the powdered carbon after greying is broken into fine particle, then add the fine particle talcum of 5%, uniform stirring, then with grinding into 100 object powder.
Detect obtained rice wheat straw activity charcoal powder synthetic graphite friction materials, result is as follows:
Outward appearance: black, Vandyke brown;
Order number: be less than or equal to 100 orders;
Ash content: be less than 5%;
Density: 1.-1.2g/cm
3;
Carbon content: 80%-82%;
Mohs' hardness: be less than 2;
Oil number: be greater than 50ml/g;
Volatile matter: be less than 0.4.
The above embodiment is only that the preferred embodiment of the present invention is described; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (3)
1. a making method for rice wheat straw activity charcoal powder synthetic graphite friction materials, is characterized in that, comprise the steps:
Step one, rice wheat straw are selected materials cleaning: collect new harvesting or the rice wheat straw in the term, remove rice wheat straw that is mouldy, that rot, the earth on cleaning stalk and impurity;
Step 2, oven dry: the rice wheat straw after cleaning is carried out being exposed to the sun or drying; During oven dry, bake out temperature is 45 DEG C-55 DEG C; Be exposed to the sun or dry to rice wheat straw water content be 9%-13%;
Step 3, pulverizing: the rice wheat straw after drying is pulverized as length is the rice wheat straw powder of 0.1-0.2 centimetre, stores in drying place;
Step 4, high pressure briquetting: by the rice wheat straw after pulverizing, put in mould, be pressed into rice wheat straw block;
Step 5, carbonization:
1) rice wheat straw block is put into the charing of oxygen deprivation stove, interval 0.8-1.2cm between rice wheat straw block;
2) adopt the charing of oxygen deprivation stove, the humidity discharging phase rises to 130 DEG C from igniting to furnace temperature, and the time is 4 hours;
3) elementary charing: be warming up to 250 DEG C, open gas blower, to air blast in kiln, elementary carbonization time is 4 hours, and gas blower leaves 30 minutes, stops 30 minutes, totally four times;
4) entirely carbonize: be warming up to 500 DEG C, the heating-up time is 1.5 hours, after temperature rises to 500 DEG C, keep 2 hours, then be warming up to 650 DEG C, the time is 4 hours, when being warming up to 650 DEG C, gas blower leaves 1 hour, stops 1 hour, circulate 2 times, be warming up to 850 DEG C again after 4 hours, after 1 hour, open ventilator, send into air and water vapour, progressively cool, Formed, came out of the stove after 6 hours;
Step 6, greying: put into graphitizing furnace after the charcoal cooling after coming out of the stove, carry out graphitization processing; First be warming up to 260-400 DEG C with 1-5 DEG C/minute of speed, pressurising 2-6Mpa, then be warming up to 350-550 DEG C with 1-2 DEG C/minute of speed, constant temperature 1-2 hour, then under argon shield, be warming up to 2400-2600 DEG C carry out greying, naturally cooling;
Step 7, grinding: the powdered carbon after greying is broken into fine particle, then add the fine particle talcum of 5%, uniform stirring, then with grinding into 100 object powder.
2. the making method of rice wheat straw activity charcoal powder synthetic graphite friction materials as claimed in claim 1, is characterized in that, in described step 2, be exposed to the sun or dry to rice wheat straw water content be 9%-12%.
3. the making method of rice wheat straw activity charcoal powder synthetic graphite friction materials as claimed in claim 1, it is characterized in that, in described step 4, rice wheat straw is pressed into the right cylinder block of 150 centimetres x150 centimetre.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510070257.9A CN104803375B (en) | 2015-02-11 | 2015-02-11 | A kind of manufacture method of rice wheat straw activated carbon powder Delanium friction material |
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| CN201510070257.9A CN104803375B (en) | 2015-02-11 | 2015-02-11 | A kind of manufacture method of rice wheat straw activated carbon powder Delanium friction material |
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| CN104803375A true CN104803375A (en) | 2015-07-29 |
| CN104803375B CN104803375B (en) | 2016-11-23 |
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| CN201510070257.9A Expired - Fee Related CN104803375B (en) | 2015-02-11 | 2015-02-11 | A kind of manufacture method of rice wheat straw activated carbon powder Delanium friction material |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106167563A (en) * | 2016-08-16 | 2016-11-30 | 广西南宁胜祺安科技开发有限公司 | A kind of function admirable modified friction material |
| CN106195083A (en) * | 2016-08-16 | 2016-12-07 | 广西南宁胜祺安科技开发有限公司 | A kind of high-strength wear-resistant brake pad |
| 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 |
| CN106220916A (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 preparation method of function admirable modified friction material |
| CN106241788A (en) * | 2016-08-16 | 2016-12-21 | 广西南宁胜祺安科技开发有限公司 | A kind of preparation technology of artificial graphite material |
| CN106281222A (en) * | 2016-08-16 | 2017-01-04 | 广西南宁胜祺安科技开发有限公司 | A kind of low-cost and high-performance filler |
| CN106276877A (en) * | 2016-08-16 | 2017-01-04 | 广西南宁胜祺安科技开发有限公司 | A kind of preparation method of corn stalk activated carbon powder Delanium friction material |
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| CN106220916A (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 preparation method of function admirable modified friction material |
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| CN106281222A (en) * | 2016-08-16 | 2017-01-04 | 广西南宁胜祺安科技开发有限公司 | A kind of low-cost and high-performance filler |
| CN106276877A (en) * | 2016-08-16 | 2017-01-04 | 广西南宁胜祺安科技开发有限公司 | A kind of preparation method of corn stalk activated carbon powder Delanium friction material |
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| CN106280028A (en) * | 2016-08-16 | 2017-01-04 | 广西南宁胜祺安科技开发有限公司 | A kind of low-cost durable type friction material |
| CN106167563A (en) * | 2016-08-16 | 2016-11-30 | 广西南宁胜祺安科技开发有限公司 | A kind of function admirable modified friction material |
| CN106195083A (en) * | 2016-08-16 | 2016-12-07 | 广西南宁胜祺安科技开发有限公司 | A kind of high-strength wear-resistant brake pad |
| CN106279836A (en) * | 2016-08-16 | 2017-01-04 | 广西南宁胜祺安科技开发有限公司 | A kind of automotive friction material |
| CN106315576A (en) * | 2016-08-16 | 2017-01-11 | 广西南宁胜祺安科技开发有限公司 | Method for preparing graphite friction material with sorghum stalks as raw material |
| CN106381126A (en) * | 2016-08-16 | 2017-02-08 | 广西南宁胜祺安科技开发有限公司 | Active carbon powder for frictional material |
| CN106381127A (en) * | 2016-08-16 | 2017-02-08 | 广西南宁胜祺安科技开发有限公司 | Modified filling material for frictional material |
| CN106367023A (en) * | 2016-08-25 | 2017-02-01 | 江苏金麦穗新能源科技股份有限公司 | Production process of preparing friction material with wheat straw |
| CN106367023B (en) * | 2016-08-25 | 2018-10-30 | 江苏金麦穗新能源科技股份有限公司 | A kind of production technology that friction material being made using wheat stalk |
| CN107082423A (en) * | 2017-04-02 | 2017-08-22 | 江苏新宏泰摩擦材料有限公司 | A kind of preparation method of the special-shaped Delanium of friction material |
| CN107082423B (en) * | 2017-04-02 | 2019-04-09 | 江苏新宏泰摩擦材料有限公司 | A kind of preparation method of the special-shaped artificial graphite of friction material |
| CN110683845A (en) * | 2019-11-18 | 2020-01-14 | 青岛瀚博电子科技有限公司 | Preparation method of carbon graphite product with superfine structure |
| CN113998684A (en) * | 2021-11-29 | 2022-02-01 | 广东凯金新能源科技股份有限公司 | Production, processing and preparation method of hard carbon material |
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