CN103059811A - Friction particle, friction material and friction goods - Google Patents
Friction particle, friction material and friction goods Download PDFInfo
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- CN103059811A CN103059811A CN201310024605XA CN201310024605A CN103059811A CN 103059811 A CN103059811 A CN 103059811A CN 201310024605X A CN201310024605X A CN 201310024605XA CN 201310024605 A CN201310024605 A CN 201310024605A CN 103059811 A CN103059811 A CN 103059811A
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Abstract
The invention provides a friction particle which can be prepared by the following methods of: 1) preparing the following materials in percent by mass: 55-73% of grinding dust, 1-3% of phenolic resin, 15-20% of liquid butyronitrile rubber and 7-22% of a first tribological property conditioning agent; and (2) uniformly mixing the materials in proportion, feeding the mixed materials into an internal mixer to be refined for 5-8 minutes, wherein the refining temperature is 80-100 DEG C, and cooling the refined material blocks and crushing so as to obtain the friction particle. The invention further provides a friction material and friction goods with the friction particle. The friction material and friction goods prepared from the friction particle have the advantages of low corrosion loss, high strength, low hardness, low noise and the like.
Description
Technical field
The invention belongs to the friction catch technical field, relate in particular to a kind of friction particles and the friction materials and the friction goods that contain this friction particles.
Background technology
In brake flat production process, in the Grinding Process for the brake facing size, can produce the approximately grinding dust of 10-15%, this dust generally all goes out of use, and causes environmental pollution.Therefore how to recycle the grinding dust, turn waste into wealth, become this area researchist's study hotspot.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of and can recycle grinding dust, the friction particles of avoiding environmental pollution and friction materials and friction goods.
The present invention solves the problems of the technologies described above the technical scheme of taking to be:
Friction particles, it can be prepared from by following methods:
1) get the raw materials ready: according to mass percent be resol, the 15-20% of grinding dust, the 1-3% of 55-73% liquid acrylonitrile butadiene rubber, and the first frictional property regulator of 7-22% choose grinding dust, resol, liquid acrylonitrile butadiene rubber, and the first frictional property regulator;
2) above-mentioned material is puddled evenly by proportioning, then compound was dropped in the Banbury mixer banburying 5-8 minute, the banburying temperature is 80-100 ℃, and after the cooling of the material piece after the banburying, fragmentation namely gets friction particles.
In the such scheme, described friction particles is 4-40 purpose particle.
In the such scheme, described friction particles also comprises the first strongthener of the 4-8% that accounts for described friction particles gross weight.
In the such scheme, described the first strongthener is comprised of the polyacrylonitrile fibre pulp of the 1-3% that accounts for described friction particles gross weight and the glass fibre of 3-5%.
In the such scheme, described glass fibre is the 2mm short glass fiber.
In the such scheme, described the first frictional property regulator by the swelling perlite powder of the moly-sulfide of the expanded graphite of the 2-7% that accounts for described friction particles gross weight, 1-4%, 3-7%, and the brass powder of 1-4% form.
Friction materials, it comprises binding agent, the second strongthener, the second frictional property regulator, reaches friction particles, and described friction particles is above-mentioned friction particles.
In the such scheme, take the gross weight of described friction materials as benchmark, the content of described binding agent is that the content of 5-15%, the second strongthener is that the content of 5-9%, the second frictional property regulator is that the content of 40-70%, friction particles is 20-50%.
Friction goods, it can be prepared from by following method: with above-mentioned friction materials thermofixation moulding, then pass through post curing treatment, namely obtain described friction goods.
In the such scheme, the pressure in the described thermofixation forming step is 150Kg/cm
2, temperature is 160-170 ℃, and the temperature in the described post curing treatment step is 180 ℃, and the time is 4 hours.
Compared with prior art, the beneficial effect obtained of the present invention is:
1) will be subject to surging force in friction materials assembling and the use procedure, therefore generally will add strongthener, namely fiber strengthens intensity and the impact resistance of friction materials.But in the present invention, we prepare friction particles with banburying process, and it is liquid acrylonitrile butadiene rubber and the grinding dust of 15-20% that raw material then mainly adopts content.Because in the banburying process, under the effect of the shearing force that height pushes and shears, when the liquid acrylonitrile butadiene rubber molecular chain is stretched with the grinding dust fully in conjunction with coating, shear simultaneously and can destroy particle aggregation, the grinding dust granules is fully disperseed and fully coat with liquid acrylonitrile butadiene rubber, thereby so that the toughness of friction particles greatly improve, therefore friction particles can absorb transform ballistic work, thereby do not use fiber reinforced material or only use less fiber just can bear surging force in assembling and the use.Therefore, utilize discarded grinding dust, and save or reduce the higher fiber of price and prepare friction particles, guaranteeing to greatly reduce production cost when friction particles has excellent anti-impact force performance.
2) owing to containing organic adhesive in the discarded grinding dust, itself hardness has been lower than common mineral filler commonly used in the friction materials, and the organic adhesive in the grinding dust and liquid acrylonitrile butadiene rubber are easy to form the firmly mutual winding between molecule segment under the effect of banburying shearing and squeeze, and forming the nucleocapsid structure that liquid acrylonitrile butadiene rubber coats the grinding dust, it also can reduce the hardness of friction particles.When using this friction particles to prepare friction materials, this friction particles forms the soft district of oarse-grained non-uniform Distribution in friction material surface, can reduce the hardness of friction materials to increase the contact performance of friction plate in the braking, brakes comfortableness thereby improve.
3) between a plurality of grinding dust granules, can form the flexible transition layer of liquid acrylonitrile butadiene rubber, thereby form the higher composite structure of damping, and the high friction particles of damping is good to the absorptivity of noise.Therefore, when using this friction particles to prepare friction materials, friction particles can also absorb the vibrations in the friction in the soft district of the oarse-grained non-uniform Distribution of friction material surface formation, reduce friction noise.
4) when using this friction particles to prepare friction materials, owing to the shock resistance of friction particles excellence, also can reduce the content of the fiber in the friction materials.Simultaneously, utilize this friction materials to prepare friction goods, can prevent that also goods from breaking under shock action.In addition, use can also the reduce friction wear rate of material of friction particles, improve friction materials work-ing life, and reduce the discharging of discarded dust.
Embodiment
The invention will be further described below in conjunction with embodiment, and certain following embodiment should not be construed as limitation of the present invention.
Embodiment 1
The present embodiment provides a kind of friction particles, and it can be prepared from by following methods:
1) gets the raw materials ready: according to the grinding dust: 73 parts, resol: 1 part, liquid acrylonitrile butadiene rubber: 15 parts, expanded graphite: 2 parts, moly-sulfide: 1 part, swelling perlite powder: 7 parts, brass powder: 1 part, choose grinding dust, resol, liquid acrylonitrile butadiene rubber, expanded graphite, moly-sulfide, swelling perlite powder, reach brass powder;
2) above-mentioned material is puddled evenly by proportioning, then compound was dropped in the Banbury mixer banburying 5 minutes, described banburying temperature is 80 ℃, after the cooling of the material piece after the banburying, is broken into 4-40 purpose particle, namely gets friction particles.
The present embodiment also provides a kind of friction materials, and it comprises binding agent, the second strongthener, the second frictional property regulator, reaches the friction particles of aforesaid method preparation.Be understandable that, binding agent, the second strongthener, and the second frictional property regulator all can select material or its mixture of this area routine.In the present embodiment, take the gross weight of described friction materials as benchmark, the content of described binding agent is that 15 parts, the content of the second strongthener are that 9 parts, the content of the second frictional property regulator are that 50 parts, the content of friction particles are 26 parts.
This friction materials is dropped in the steel die, at 150Kg/cm
2Pressure and 160-170 ℃ temperature under the thermofixation moulding, then through 180 ℃, 4 hours post curing treatment namely obtains friction goods.
Embodiment 2
The present embodiment provides a kind of friction particles, and it can be prepared from by following methods:
1) gets the raw materials ready: according to the grinding dust: 55 parts, resol: 3 parts, liquid acrylonitrile butadiene rubber: 20 parts, expanded graphite: 7 parts, moly-sulfide: 4 parts, swelling perlite powder: 7 parts, brass powder: 4 parts, choose grinding dust, resol, liquid acrylonitrile butadiene rubber, expanded graphite, moly-sulfide, swelling perlite powder, reach brass powder;
2) above-mentioned material is puddled evenly by proportioning, then compound was dropped in the Banbury mixer banburying 8 minutes, described banburying temperature is 100 ℃, after the cooling of the material piece after the banburying, is broken into 4-40 purpose particle, namely gets friction particles.
The present embodiment also provides a kind of friction materials, and it comprises binding agent, the second strongthener, the second frictional property regulator, reaches the friction particles of aforesaid method preparation.Be understandable that, binding agent, the second strongthener, and the second frictional property regulator all can select material or its mixture of this area routine.In the present embodiment, take the gross weight of described friction materials as benchmark, the content of described binding agent is that 5 parts, the content of the second strongthener are that 5 parts, the content of the second frictional property regulator are that 40 parts, the content of friction particles are 50 parts.
This friction materials is dropped in the steel die, at 150Kg/cm
2Pressure and 160-170 ℃ temperature under the thermofixation moulding, then through 180 ℃, 4 hours post curing treatment namely obtains friction goods.
Embodiment 3
The present embodiment provides a kind of friction particles, and it can be prepared from by following methods:
1) gets the raw materials ready: according to the grinding dust: 65 parts, resol: 2 parts, liquid acrylonitrile butadiene rubber: 18 parts, expanded graphite: 5 parts, moly-sulfide: 4 parts, swelling perlite powder: 5 parts, brass powder: 1 part, choose grinding dust, resol, liquid acrylonitrile butadiene rubber, expanded graphite, moly-sulfide, swelling perlite powder, reach brass powder;
2) above-mentioned material is puddled evenly by proportioning, then compound was dropped in the Banbury mixer banburying 7 minutes, described banburying temperature is 90 ℃, after the cooling of the material piece after the banburying, is broken into 4-40 purpose particle, namely gets friction particles.
The present embodiment also provides a kind of friction materials, and it comprises binding agent, the second strongthener, the second frictional property regulator, reaches the friction particles of aforesaid method preparation.Be understandable that, binding agent, the second strongthener, and the second frictional property regulator all can select material or its mixture of this area routine.In the present embodiment, take the gross weight of described friction materials as benchmark, the content of described binding agent is that 5 parts, the content of the second strongthener are that 5 parts, the content of the second frictional property regulator are that 70 parts, the content of friction particles are 20 parts.
This friction materials is dropped in the steel die, at 150Kg/cm
2Pressure and 160-170 ℃ temperature under the thermofixation moulding, then through 180 ℃, 4 hours post curing treatment namely obtains friction goods.
Embodiment 4
Embodiment 4 and embodiment 1 are roughly the same, and difference is that the component of getting the raw materials ready in the step 1) among the preparation method of friction particles of the present embodiment is different.The present embodiment has increased polyacrylonitrile fibre pulp and glass fibre, be specially: the grinding dust: 73 parts, resol: 1 part, liquid acrylonitrile butadiene rubber: 15 parts, expanded graphite: 2 parts, moly-sulfide: 1 part, swelling perlite powder: 3 parts, brass powder: 1 part, polyacrylonitrile fibre pulp: 1 part, and 3 parts in glass fibre.Described glass fibre is the 2mm short glass fiber.
Comparative Examples 1
Roughly the same with embodiment 1, difference is that selected paracril is Powdered, and in the preparation method's of friction particles step 2) in, adopt conventional hot-forming and thermal treatment process to prepare friction particles.Wherein: hot-forming temperature is that 140 ℃, pressure are that 15Mpa, time are 10 minutes; Heat treated temperature is that 180 ℃, time are 6 hours.
Comparative Examples 2
Roughly the same with embodiment 1, the component of getting the raw materials ready in the preparation method's that difference is at friction particles the step 1) is slightly different with content, mainly be to increase strongthener, and the amount of strongthener is greater than the amount of strongthener among the embodiment 4, and the content of reduction grinding dust and liquid acrylonitrile butadiene rubber, be specially: the grinding dust: 66 parts, resol: 1 part, liquid acrylonitrile butadiene rubber: 10 parts, expanded graphite: 2 parts, moly-sulfide: 1 part, swelling perlite powder: 3 parts, brass powder: 1 part, polyacrylonitrile fibre pulp: 8 parts, and 8 parts in glass fibre.
Comparative Examples 3
Roughly the same with embodiment 1, difference is not to be added with in the friction materials friction particles, and namely in this Comparative Examples, the content of binding agent is that 15 parts, the content of the second strongthener are that 9 parts, the content of the second frictional property regulator are 50 parts.
To embodiment 1 to embodiment 4, and Comparative Examples 1 to Comparative Examples 3 prepared friction goodss carry out anti-impact force, hardness, frictional coefficient and wear rate (GB5763-2008) and noise (is pressed the SAEJ1060 method evaluation, score value more high noisy is lower) test test result such as table 1 and table 2:
Table 1 frictional coefficient and wear rate test result
Table 2 anti-impact force, hardness, and noise test result
Can be found out to have that wear rate is low, intensity is high, hardness is low and the advantage such as noise is low with the prepared friction particles of the inventive method and friction materials thereof by table 1 and table 2.
Claims (10)
1. friction particles is characterized in that, it can be prepared from by following methods:
1) get the raw materials ready: according to mass percent be resol, the 15-20% of grinding dust, the 1-3% of 55-73% liquid acrylonitrile butadiene rubber, and the first frictional property regulator of 7-22% choose grinding dust, resol, liquid acrylonitrile butadiene rubber, and the first frictional property regulator;
2) above-mentioned material is puddled evenly by proportioning, then compound was dropped in the Banbury mixer banburying 5-8 minute, the banburying temperature is 80-100 ℃, and after the cooling of the material piece after the banburying, fragmentation namely gets friction particles.
2. friction particles as claimed in claim 1 is characterized in that, described friction particles is 4-40 purpose particle.
3. friction particles as claimed in claim 1 is characterized in that, described friction particles also comprises the first strongthener of the 4-8% that accounts for described friction particles gross weight.
4. friction particles as claimed in claim 3 is characterized in that, described the first strongthener is comprised of the polyacrylonitrile fibre pulp of the 1-3% that accounts for described friction particles gross weight and the glass fibre of 3-5%.
5. friction particles as claimed in claim 4 is characterized in that, described glass fibre is the 2mm short glass fiber.
6. friction particles as claimed in claim 1 is characterized in that, described the first frictional property regulator by the swelling perlite powder of the moly-sulfide of the expanded graphite of the 2-7% that accounts for described friction particles gross weight, 1-4%, 3-7%, and the brass powder of 1-4% form.
7. friction materials is characterized in that, it comprises binding agent, the second strongthener, the second frictional property regulator, reaches friction particles, and described friction particles is each described friction particles of claim 1 to 6.
8. friction materials as claimed in claim 7, it is characterized in that, take the gross weight of described friction materials as benchmark, the content of described binding agent is that the content of 5-15%, the second strongthener is that the content of 5-9%, the second frictional property regulator is that the content of 40-70%, friction particles is 20-50%.
9. friction goods, it can be prepared from by following method: with claim 7 or 8 described friction materials thermofixation moulding, then pass through post curing treatment, namely obtain described friction goods.
10. friction goods as claimed in claim 9 is characterized in that, the pressure in the described thermofixation forming step is 150Kg/cm
2, temperature is 160-170 ℃, and the temperature in the described post curing treatment step is 180 ℃, and the time is 4 hours.
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| CN201310024605.XA CN103059811B (en) | 2013-01-23 | 2013-01-23 | Friction particle, friction material and friction goods |
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| CN201310024605.XA CN103059811B (en) | 2013-01-23 | 2013-01-23 | Friction particle, friction material and friction goods |
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| CN105111673A (en) * | 2015-09-10 | 2015-12-02 | 广东新劲刚新材料科技股份有限公司 | Material of phenolic resin diamond grinding tool and preparation method of grinding tool |
| CN105134846A (en) * | 2015-09-28 | 2015-12-09 | 东营博瑞制动系统有限公司 | Ceramic friction material and manufacturing method thereof |
| CN107142084A (en) * | 2017-06-28 | 2017-09-08 | 滁州市三和纤维制造有限公司 | A kind of preparation method of compound friction particle for friction material |
| CN108864512A (en) * | 2018-07-05 | 2018-11-23 | 北京天宜上佳高新材料股份有限公司 | A kind of preparation method of fiber-reinforced resin base frication material |
| CN109320809A (en) * | 2018-09-26 | 2019-02-12 | 浙江昌达汽车零部件制造有限公司 | It is a kind of to utilize friction rubber grain made from the grey waste material of grinding and the preparation method and application thereof |
| CN109320805A (en) * | 2018-09-11 | 2019-02-12 | 东莞市雄林新材料科技股份有限公司 | A kind of crystal mirror surface TPU film and preparation method thereof |
| CN113201309A (en) * | 2021-04-28 | 2021-08-03 | 湖北富工摩擦材料有限公司 | Method for recycling dust of friction material |
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| US20030059645A1 (en) * | 2001-09-25 | 2003-03-27 | Kesavan Sunil K. | Friction materials containing tin oxides |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105111673A (en) * | 2015-09-10 | 2015-12-02 | 广东新劲刚新材料科技股份有限公司 | Material of phenolic resin diamond grinding tool and preparation method of grinding tool |
| CN105134846A (en) * | 2015-09-28 | 2015-12-09 | 东营博瑞制动系统有限公司 | Ceramic friction material and manufacturing method thereof |
| CN107142084A (en) * | 2017-06-28 | 2017-09-08 | 滁州市三和纤维制造有限公司 | A kind of preparation method of compound friction particle for friction material |
| CN108864512A (en) * | 2018-07-05 | 2018-11-23 | 北京天宜上佳高新材料股份有限公司 | A kind of preparation method of fiber-reinforced resin base frication material |
| CN109320805A (en) * | 2018-09-11 | 2019-02-12 | 东莞市雄林新材料科技股份有限公司 | A kind of crystal mirror surface TPU film and preparation method thereof |
| CN109320809A (en) * | 2018-09-26 | 2019-02-12 | 浙江昌达汽车零部件制造有限公司 | It is a kind of to utilize friction rubber grain made from the grey waste material of grinding and the preparation method and application thereof |
| CN113201309A (en) * | 2021-04-28 | 2021-08-03 | 湖北富工摩擦材料有限公司 | Method for recycling dust of friction material |
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| CN103059811B (en) | 2014-04-23 |
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