CN103059811B - Friction particle, friction material and friction goods - Google Patents
Friction particle, friction material and friction goods Download PDFInfo
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- CN103059811B CN103059811B CN201310024605.XA CN201310024605A CN103059811B CN 103059811 B CN103059811 B CN 103059811B CN 201310024605 A CN201310024605 A CN 201310024605A CN 103059811 B CN103059811 B CN 103059811B
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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 friction catch technical field, the friction materials and the friction goods that relate in particular to a kind of friction particles and contain this friction particles.
Background technology
In brake flat production process, in the Grinding Process for brake facing size, can produce the grinding dust of about 10-15%, this dust generally all goes out of use, and causes environmental pollution.Therefore how to recycle 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 for solving the problems of the technologies described above taked technical scheme is:
Friction particles, it can be prepared from by following methods:
1) get the raw materials ready: the first frictional property regulator of the resol of the grinding dust that is 55-73% according to mass percent, 1-3%, the liquid acrylonitrile butadiene rubber of 15-20% and 7-22% is chosen grinding dust, resol, liquid acrylonitrile butadiene rubber and the first frictional property regulator;
2) above-mentioned material is puddled evenly by proportioning, then compound is dropped into banburying 5-8 minute in Banbury mixer, banburying temperature is 80-100 ℃, and after cooling the material piece after banburying, fragmentation, obtains friction particles.
In such scheme, described friction particles is 4-40 object particle.
In such scheme, described friction particles also comprises the first strongthener of the 4-8% that accounts for described friction particles gross weight.
In such scheme, described the first strongthener forms by accounting for the polyacrylonitrile fibre pulp of 1-3% of described friction particles gross weight and the glass fibre of 3-5%.
In such scheme, described glass fibre is 2mm short glass fiber.
In such scheme, described the first frictional property regulator is comprised of the expanded graphite, moly-sulfide, the swelling perlite powder of 3-7% and the brass powder of 1-4% of 1-4% of the 2-7% that accounts for described friction particles gross weight.
Friction materials, it comprises binding agent, the second strongthener, the second frictional property regulator and friction particles, described friction particles is above-mentioned friction particles.
In 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: by above-mentioned friction materials thermofixation moulding, then pass through post curing treatment, obtain described friction goods.
In such scheme, the pressure in described thermofixation forming step is 150Kg/cm
2, temperature is 160-170 ℃, and the temperature in described post curing treatment step is 180 ℃, and the time is 4 hours.
Compared with prior art, the beneficial effect that the present invention obtains is:
1) in friction materials assembling and use procedure, will be subject to surging force, therefore generally will add strongthener, fiber strengthens intensity and the impact resistance of friction materials.But in the present invention, we prepare friction particles with banburying process, it is liquid acrylonitrile butadiene rubber and the grinding dust of 15-20% that raw material mainly adopts content.In banburying process, under the effect of the shearing force of pushing and shearing at height, when can make liquid acrylonitrile butadiene rubber molecular chain stretch with grinding dust fully in conjunction with being coated, shear and can destroy particle aggregation simultaneously, grinding dust granules is fully disperseed and fully coated with liquid acrylonitrile butadiene rubber, thereby the toughness of friction particles is improved greatly, therefore friction particles can absorb ballistic work to transform, thereby do not use fiber reinforced material or only use less fiber just can bear the surging force in assembling and use.Therefore, utilize discarded grinding dust, and save or reduce the fiber that price is higher 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 discarded grinding dust, itself hardness is lower than common mineral filler conventional in friction materials, and the organic adhesive in 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 of the coated grinding dust of liquid acrylonitrile butadiene rubber, 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 braking, thereby improve braking comfortableness.
3) between multiple 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, the soft district of the oarse-grained non-uniform Distribution that friction particles forms in friction material surface can also absorb the vibrations in friction, reduces friction noise.
4) when using this friction particles to prepare friction materials, due to the shock resistance of friction particles excellence, also can reduce the content of the fiber in friction materials.Meanwhile, utilize this friction materials to prepare friction goods, also can prevent that goods from breaking under shock action.In addition, use friction particles can also reduce the wear rate of friction materials, improve friction materials work-ing life, and reduce the discharge of discarded dust.
Embodiment
Below in conjunction with embodiment, the invention will be further described, 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) get the raw materials ready: according to 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 and brass powder;
2) above-mentioned material is puddled evenly by proportioning, then compound is dropped in Banbury mixer to banburying 5 minutes, described banburying temperature is 80 ℃, after cooling the material piece after banburying, is broken into 4-40 object particle, obtains friction particles.
The present embodiment also provides a kind of friction materials, and it comprises friction particles prepared by binding agent, the second strongthener, the second frictional property regulator and aforesaid method.Be understandable that, binding agent, the second strongthener and the second frictional property regulator all can be selected 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 steel die, at 150Kg/cm
2pressure and the temperature of 160-170 ℃ under thermofixation moulding, then through 180 ℃, the post curing treatment of 4 hours, obtains friction goods.
embodiment 2
The present embodiment provides a kind of friction particles, and it can be prepared from by following methods:
1) get the raw materials ready: according to 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 and brass powder;
2) above-mentioned material is puddled evenly by proportioning, then compound is dropped in Banbury mixer to banburying 8 minutes, described banburying temperature is 100 ℃, after cooling the material piece after banburying, is broken into 4-40 object particle, obtains friction particles.
The present embodiment also provides a kind of friction materials, and it comprises friction particles prepared by binding agent, the second strongthener, the second frictional property regulator and aforesaid method.Be understandable that, binding agent, the second strongthener and the second frictional property regulator all can be selected 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 steel die, at 150Kg/cm
2pressure and the temperature of 160-170 ℃ under thermofixation moulding, then through 180 ℃, the post curing treatment of 4 hours, obtains friction goods.
embodiment 3
The present embodiment provides a kind of friction particles, and it can be prepared from by following methods:
1) get the raw materials ready: according to 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 and brass powder;
2) above-mentioned material is puddled evenly by proportioning, then compound is dropped in Banbury mixer to banburying 7 minutes, described banburying temperature is 90 ℃, after cooling the material piece after banburying, is broken into 4-40 object particle, obtains friction particles.
The present embodiment also provides a kind of friction materials, and it comprises friction particles prepared by binding agent, the second strongthener, the second frictional property regulator and aforesaid method.Be understandable that, binding agent, the second strongthener and the second frictional property regulator all can be selected 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 steel die, at 150Kg/cm
2pressure and the temperature of 160-170 ℃ under thermofixation moulding, then through 180 ℃, the post curing treatment of 4 hours, obtains friction goods.
embodiment 4
Embodiment 4 and embodiment 1 are roughly the same, and difference is the component difference of getting the raw materials ready in the step 1) in the preparation method of friction particles of the present embodiment.The present embodiment has increased polyacrylonitrile fibre pulp and glass fibre, be specially: 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: 3 parts, 1 part and glass fibre.Described glass fibre is 2mm short glass fiber.
comparative example 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 example 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 step 1) is slightly different with content, mainly to increase strongthener, and the amount of strongthener is greater than the amount of strongthener in embodiment 4, and reduce the content of grinding dust and liquid acrylonitrile butadiene rubber, be specially: 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, 8 parts and glass fibre.
comparative example 3
Roughly the same with embodiment 1, difference is not to be added with in friction materials friction particles, and in this comparative example, 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 example 1 to the prepared friction goods of comparative example 3 carries out anti-impact force, hardness, frictional coefficient and wear rate (GB5763-2008) and noise (by SAEJ1060 method evaluation, score value more high noisy is lower) to test, test result is 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
By table 1 and table 2, 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.
Claims (8)
1. friction particles, is characterized in that, it can be prepared from by following methods:
1) get the raw materials ready: the first frictional property regulator of the resol of the grinding dust that is 55-73% according to mass percent, 1-3%, the liquid acrylonitrile butadiene rubber of 15-20% and 7-22% is chosen grinding dust, resol, liquid acrylonitrile butadiene rubber and the first frictional property regulator, described the first frictional property regulator is comprised of the expanded graphite, moly-sulfide, the swelling perlite powder of 3-7% and the brass powder of 1-4% of 1-4% of the 2-7% that accounts for described friction particles gross weight;
2) above-mentioned material is puddled evenly by proportioning, then compound is dropped into banburying 5-8 minute in Banbury mixer, banburying temperature is 80-100 ℃, and after cooling the material piece after banburying, fragmentation, obtains friction particles.
2. friction particles as claimed in claim 1, is characterized in that, described friction particles is 4-40 object 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 forms by accounting for the polyacrylonitrile fibre pulp of 1-3% of 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 2mm short glass fiber.
6. friction materials, it is characterized in that, it comprises binding agent, the second strongthener, the second frictional property regulator and friction particles, described friction particles is the friction particles described in claim 1 to 5 any one, 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%.
7. friction goods, it can be prepared from by following method: by friction materials thermofixation moulding claimed in claim 6, then pass through post curing treatment, obtain described friction goods.
8. friction goods as claimed in claim 7, is characterized in that, the pressure in described thermofixation forming step is 150Kg/cm
2, temperature is 160-170 ℃, and the temperature in 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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Families Citing this family (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 |
| CN105134846B (en) * | 2015-09-28 | 2017-10-31 | 东营博瑞制动系统有限公司 | A kind of ceramic frication material and its manufacture method |
| 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 |
| CN108864512B (en) * | 2018-07-05 | 2020-08-07 | 北京天宜上佳高新材料股份有限公司 | Preparation method of fiber reinforced resin-based friction material |
| CN109320805B (en) * | 2018-09-11 | 2021-02-09 | 东莞市雄林新材料科技股份有限公司 | 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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| CN101270791A (en) * | 2008-04-11 | 2008-09-24 | 曲阜天博汽车零部件制造有限公司 | Abrasive dust recycling method in brake disc production |
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| US7179850B2 (en) * | 2001-09-25 | 2007-02-20 | Honeywell International, Inc. | Friction materials containing tin oxides |
| JP4960135B2 (en) * | 2007-01-30 | 2012-06-27 | 日立化成工業株式会社 | Sulfur-containing hyperbranched compound and unsaturated group-containing hyperbranched compound |
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| CN101270791A (en) * | 2008-04-11 | 2008-09-24 | 曲阜天博汽车零部件制造有限公司 | Abrasive dust recycling method in brake disc production |
| CN101619202A (en) * | 2009-08-06 | 2010-01-06 | 重庆红宇摩擦制品有限公司 | Low-abrasion environment-friendly composite ceramic-based friction material |
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