CN103032499B - Automotive brake friction plate made of hexagonal-crystal-system boron nitride and preparation method thereof - Google Patents
Automotive brake friction plate made of hexagonal-crystal-system boron nitride and preparation method thereof Download PDFInfo
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Abstract
In order to overcome the problems that the automotive brake friction plate in the prior art contains heavy metal antimony so as to cause pollution to the environment and cause harm to a human body, the invention discloses an automotive brake friction plate made of hexagonal-crystal-system boron nitride and a preparation method thereof. The automotive brake friction plate comprises the following powdery components or fibrous components in parts by weight: 80-120 parts of boron-modified phenolic resin, 200-300 parts of low-carbon steel fiber, 70-140 parts of mineral fiber, 100-120 parts of hexagonal-crystal-system boron nitride powder, 80-120 parts of graphite powder, 70-100 parts of isometric crystal system Eta-Al2O3 powder, 100-200 parts of coke powder, 100-140 parts of friction powder, 120-160 parts of vermiculite powder and 80-120 parts of barite powder. The automotive brake friction plate disclosed by the invention has the beneficial and technical effects that the heavy metal antimony which is harmful to the human body and pollutes the environment is completely eliminated; the performance of the prepared brake piece is far higher than a current national standard; and the density of the hexagonal-crystal-system boron nitride is lower than that of antimony sulfide and conforms to the trend of automotive light-weight development.
Description
Invention field
The present invention relates to automobile brake friction plate manufacturing technology, be related specifically to a kind of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride and preparation method thereof.
Background technique
At present, automobile brake friction plate uses antimonous sulfide in a large number, for the lubrication of friction material when high temperature friction, guarantees the stable of high temperature friction coefficient.Antimony sulphide is obtained through selected and chemical purification by stibnite, is black solid powder.Its fusing point is lower, it is 548 DEG C, the antimony oxide generated after pyrolysis, and the metallic antimony generated when reducing agent exists, the oxidizing fire of material during high temperature can be prevented, keep the stable friction factor of material, improve the ability of anti-burning of material, organic bond decomposition rate when high temperature can also be reduced, improve the working life of material, serve the effect of high temperature inorganic tackiness agent and lubrication friction adjusting agent.But antimony is heavy metal element, enters after in air, rain water and soil with friction dust and not easily degrade, directly or indirectly enter human body, heavy metal poisoning can be caused to health of people, destroy Inner eycle respiratory tract and the digestive tract of human body.Therefore, EC regulations requires the consumption that will gradually reduce antimonous sulfide in friction material, thoroughly forbids adding in friction material at the latest at the year two thousand twenty.Obviously, prior art automobile brake friction plate also exists containing heavy metal antimony, to environment, damages human body, by the disabled problem such as to use in automobile brake friction plate.
Summary of the invention
For overcome that prior art automobile brake friction plate exists containing heavy metal antimony, to environment, damage human body, by the disabled problem such as to use in automobile brake friction plate, the present invention proposes a kind of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride and preparation method thereof.Automotive brake friction plate made of hexagonal-crystal-syboron boron nitride of the present invention comprises the powders component of boron modified phenolic resin 80 ~ 120 parts, low carbon steel fiber 200 ~ 300 parts, mineral fibre 70 ~ 140 parts, hexagonal system boron nitride powder 100 ~ 120 parts, plumbago 80 ~ 120 parts, 70 ~ 100 parts, regular system η-Al2O3 powder, coke powder 100 ~ 200 parts, Frication powder 100 ~ 140 parts, vermiculite power 120 ~ 160 parts and blanc fixe 80-120 part weight or fibrous component; Employing temperature is 160 DEG C ± 5 DEG C, pressure is 350Kg/cm
2be that the process parameter of 240S ± 5S is hot-forming with setting time, and adopt room temperature to 230 DEG C of 3 hours, 230 DEG C insulations 5 hours and be cooled to the process parameter of coming out of the stove lower than 80 DEG C with furnace temperature and heat-treat of at the uniform velocity heating up.
Further, automotive brake friction plate made of hexagonal-crystal-syboron boron nitride hexagonal system boron nitride of the present invention is the white powder of graphite mould stratiform structure.
Further, the granularity of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride powders component of the present invention is below 20 orders, and wherein, the granularity of the powders component of weight ratio 30% is 20 ~ 40 orders, the granularity of the powders component of 60% is 40 ~ 60 orders, and the granularity of the powders component of 10% is for being less than 60 orders.
Further, the length of the fibrous component of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride of the present invention is 2 ~ 3mm, and diameter is 165 ~ 230 μm.
Further, the Frication powder of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride of the present invention is cashew nut oil Frication powder.
Further, the blanc fixe of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride of the present invention is barium sulphate.
Further, the boron modified phenolic resin of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride of the present invention is powdery, and granularity is 150 ~ 200 orders.
Automotive brake friction plate made of hexagonal-crystal-syboron boron nitride preparation method of the present invention, comprises the following steps:
S1: prepared by mixture, powders component or fibrous component is taken by the weight of boron modified phenolic resin 80 ~ 120 parts, low carbon steel fiber 200 ~ 300 parts, mineral fibre 70 ~ 140 parts, hexagonal system boron nitride powder 100-~ 120 part, plumbago 80 ~ 120 parts, 70 ~ 100 parts, regular system η-Al2O3 powder, coke powder 100 ~ 200 parts, Frication powder 100 ~ 140 parts, vermiculite power 120 ~ 160 parts and blanc fixe 80-120 part, add in plough type batch mixer, mix 10 ~ 15 minutes;
Wherein, the granularity of described powders component is the granularity of the powders component of weight ratio 30% is 20 ~ 40 orders, and the granularity of the powders component of 60% is 40 ~ 60 orders, and the granularity of the powders component of 10% is for being less than 60 orders; The length of described fibrous component is 2 ~ 3mm, and diameter is 165 ~ 230 μm; Described hexagonal system boron nitride is the white powder of graphite mould stratiform structure; Described Frication powder is cashew nut oil Frication powder; Described blanc fixe is barium sulphate; Described boron modified phenolic resin is powdery, and granularity is 150 ~ 200 orders;
S2: hot pressing, chooses corresponding mould according to vehicle, and takes its weight error of mixture for ± 0.5g by technological requirement, then, according to temperature be 160 DEG C ± 5 DEG C, pressure is 350Kg/cm
2be set as the process parameter of 240S ± 5S with setting time, 300 heat pressing forming machines carry out hot pressing;
S3: heat treatment, according to room temperature to 230 DEG C of 3 hours, 230 DEG C insulations 5 hours and be cooled to the process parameter of coming out of the stove lower than 80 DEG C with furnace temperature and heat-treat in an oven of heating up.
The Advantageous Effects of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride of the present invention and preparation method thereof has fully phased out heavy metal element antimony that is harmful, befouling environment, prepare the braking plate of the far super existing national standards of performance, and hexagonal system boron nitride density is lower than antimony sulphide, meets automotive light weight technology development trend.
Accompanying drawing explanation
Accompanying drawing 1 is the step schematic diagram of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride preparation method of the present invention.
Below in conjunction with drawings and the specific embodiments, this present invention automotive brake friction plate made of hexagonal-crystal-syboron boron nitride and preparation method thereof is further described.
Embodiment
Automotive brake friction plate made of hexagonal-crystal-syboron boron nitride of the present invention comprises the powders component of boron modified phenolic resin 80 ~ 120 parts, low carbon steel fiber 200 ~ 300 parts, mineral fibre 70 ~ 140 parts, hexagonal system boron nitride powder 100 ~ 120 parts, plumbago 80 ~ 120 parts, 70 ~ 100 parts, regular system η-Al2O3 powder, coke powder 100 ~ 200 parts, Frication powder 100 ~ 140 parts, vermiculite power 120 ~ 160 parts and blanc fixe 80-120 part weight or fibrous component; Employing temperature is 160 DEG C ± 5 DEG C, pressure is 350Kg/cm
2be that the process parameter of 240S ± 5S is hot-forming with setting time, and adopt room temperature to 230 DEG C of 3 hours, 230 DEG C insulations 5 hours and be cooled to the process parameter of coming out of the stove lower than 80 DEG C with furnace temperature and heat-treat of at the uniform velocity heating up.
For ensureing each component energy Homogeneous phase mixing and mutually melting and bonding, the granularity of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride powders component of the present invention is less than 20, wherein, the granularity of the powders component of weight ratio 30% is 20 ~ 40 orders, the granularity of the powders component of 60% is 40 ~ 60 orders, and the granularity of the powders component of 10% is for being less than 60 orders; The length of threadiness component is 2 ~ 3mm, and diameter is 165 ~ 230 μm.
As preferably, the hexagonal system boron nitride of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride of the present invention is the white powder of graphite mould stratiform structure; Frication powder is cashew nut oil Frication powder; Blanc fixe is barium sulphate; Boron modified phenolic resin is powdery, and granularity is 150 ~ 200 orders.
Accompanying drawing 1 is the step schematic diagram of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride preparation method of the present invention, and as seen from the figure, automotive brake friction plate made of hexagonal-crystal-syboron boron nitride preparation method of the present invention, comprises the following steps:
S1: take powders component or fibrous component by the weight of boron modified phenolic resin 80 ~ 120 parts, low carbon steel fiber 200 ~ 300 parts, mineral fibre 70 ~ 140 parts, hexagonal system boron nitride powder 100 ~ 120 parts, plumbago 80 ~ 120 parts, 70 ~ 100 parts, regular system η-Al2O3 powder, coke powder 100 ~ 200 parts, Frication powder 100 ~ 140 parts, vermiculite power 120 ~ 160 parts and blanc fixe 80-120 part, add in plough type batch mixer, mix 10 ~ 15 minutes;
Wherein, the granularity of described powders component is the granularity of the powders component of weight ratio 30% is 20 ~ 40 orders, and the granularity of the powders component of 60% is 40 ~ 60 orders, and the granularity of the powders component of 10% is for being less than 60 orders; The length of described fibrous component is 2 ~ 3mm, and diameter is 165 ~ 230 μm; Described hexagonal system boron nitride is the white powder of graphite mould stratiform structure; Described Frication powder is cashew nut oil Frication powder; Described blanc fixe is barium sulphate; Described boron modified phenolic resin is powdery, and granularity is 150 ~ 200 orders;
In a particular embodiment, following component proportioning is adopted to test respectively:
S2: hot pressing, chooses corresponding mould according to vehicle, and takes its weight error of mixture for ± 0.5g by technological requirement, then, according to temperature be 160 DEG C ± 5 DEG C, pressure is 350Kg/cm
2be set as the process parameter of 240S ± 5S with setting time, 300 heat pressing forming machines carry out hot pressing;
S3: heat treatment, according to room temperature to 230 DEG C of 3 hours, 230 DEG C insulations 5 hours and be cooled to the process parameter of coming out of the stove lower than 80 DEG C with furnace temperature and heat-treat in an oven of heating up.
Subordinate list 1 is the test result that automotive brake friction plate made of hexagonal-crystal-syboron boron nitride embodiment of the present invention 1,3, No. 5 friction plates are tested friction factor and wear rate by standard GB/T 5763-2008 tetra-class friction plate.
Table 1: the test result of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride friction factor of the present invention and wear rate
Automotive brake friction plate made of hexagonal-crystal-syboron boron nitride of the present invention is also tested noise according to AIAE American institute of automobile engineers SAE J2521 testboard bay.In 1400 brake noise tests, the incidence rate that noise is greater than 70db (A) is 0.2%, the incidence rate that noise is greater than 80db (A) is zero, the incidence rate being greater than 70dB (A) far above international standard noise is less than 10%, and the incidence rate that noise is greater than 105 dB (A) is the requirement of zero.
Obviously, the Advantageous Effects of automotive brake friction plate made of hexagonal-crystal-syboron boron nitride of the present invention and preparation method thereof has fully phased out heavy metal element antimony that is harmful, befouling environment, prepare the braking plate of the far super current standard of performance, and hexagonal system boron nitride density is lower than antimony sulphide, meets automotive light weight technology development trend.
Claims (8)
1. an automotive brake friction plate made of hexagonal-crystal-syboron boron nitride, is characterized in that: this friction plate comprises the powders component of boron modified phenolic resin 80 ~ 120 parts, low carbon steel fiber 200 ~ 300 parts, mineral fibre 70 ~ 140 parts, hexagonal system boron nitride powder 100 ~ 120 parts, plumbago 80 ~ 120 parts, regular system η-aluminium oxide powder 70 ~ 100 parts, coke powder 100 ~ 200 parts, Frication powder 100 ~ 140 parts, vermiculite power 120 ~ 160 parts and blanc fixe 80-120 part weight or fibrous component; Employing temperature is 160 DEG C ± 5 DEG C, pressure is 350Kg/cm
2be that the process parameter of 240S ± 5S is hot-forming with setting time, and adopt room temperature to 230 DEG C of 3 hours, 230 DEG C insulations 5 hours and be cooled to the process parameter of coming out of the stove lower than 80 DEG C with furnace temperature and heat-treat of at the uniform velocity heating up.
2. automotive brake friction plate made of hexagonal-crystal-syboron boron nitride according to claim 1, is characterized in that: hexagonal system boron nitride is the white powder of graphite mould stratiform structure.
3. automotive brake friction plate made of hexagonal-crystal-syboron boron nitride according to claim 1, it is characterized in that: the granularity of powders component is below 20 orders, wherein, the granularity of the powders component of weight ratio 30% is 20 ~ 40 orders, the granularity of the powders component of 60% is 40 ~ 60 orders, and the granularity of the powders component of 10% is for being less than 60 orders.
4. automotive brake friction plate made of hexagonal-crystal-syboron boron nitride according to claim 1, is characterized in that: the length of fibrous component is 2 ~ 3mm, and diameter is 165 ~ 230 μm.
5. automotive brake friction plate made of hexagonal-crystal-syboron boron nitride according to claim 1, is characterized in that: Frication powder is cashew nut oil Frication powder.
6. automotive brake friction plate made of hexagonal-crystal-syboron boron nitride according to claim 1, is characterized in that: blanc fixe is barium sulphate.
7. automotive brake friction plate made of hexagonal-crystal-syboron boron nitride according to claim 1, it is characterized in that: boron modified phenolic resin is powdery, granularity is 150 ~ 200 orders.
8. an automotive brake friction plate made of hexagonal-crystal-syboron boron nitride preparation method, is characterized in that: this preparation method comprises the following steps:
S1: prepared by mixture, powders component or fibrous component is taken by the weight of boron modified phenolic resin 80 ~ 120 parts, low carbon steel fiber 200 ~ 300 parts, mineral fibre 70 ~ 140 parts, hexagonal system boron nitride powder 100 ~ 120 parts, plumbago 80 ~ 120 parts, regular system η-aluminium oxide powder 70 ~ 100 parts, coke powder 100 ~ 200 parts, Frication powder 100 ~ 140 parts, vermiculite power 120 ~ 160 parts and blanc fixe 80-120 part, add in plough type batch mixer, mix 10 ~ 15 minutes;
Wherein, the granularity of described powders component is the granularity of the powders component of weight ratio 30% is 20 ~ 40 orders, and the granularity of the powders component of 60% is 40 ~ 60 orders, and the granularity of the powders component of 10% is for being less than 60 orders; The length of described fibrous component is 2 ~ 3mm, and diameter is 165 ~ 230 μm; Described hexagonal system boron nitride is the white powder of graphite mould stratiform structure; Described Frication powder is cashew nut oil Frication powder; Described blanc fixe is barium sulphate; Described boron modified phenolic resin is powdery, and granularity is 150 ~ 200 orders;
S2: hot pressing, chooses corresponding mould according to vehicle, and takes mixture by technological requirement, and its weight error is ± 0.5g, then, according to temperature be 160 DEG C ± 5 DEG C, pressure is 350Kg/cm
2be set as the process parameter of 240S ± 5S with setting time, 300 tons of heat pressing forming machines carry out hot pressing;
S3: heat treatment, according to room temperature to 230 DEG C of 3 hours, 230 DEG C insulations 5 hours and be cooled to the process parameter of coming out of the stove lower than 80 DEG C with furnace temperature and heat-treat in an oven of heating up.
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| CN105202086A (en) * | 2015-10-16 | 2015-12-30 | 王玮 | Disc type brake pad |
| CN106122322B (en) * | 2016-06-28 | 2018-11-30 | 东台市华阳玻纤有限责任公司 | A kind of automobile friction material and preparation method thereof |
| CN105909710B (en) * | 2016-06-28 | 2018-08-10 | 东台市华阳玻纤有限责任公司 | A kind of tripartite's boron nitride automotive brake friction material and preparation method thereof |
| CN111269530B (en) * | 2020-04-03 | 2021-06-01 | 黑龙江英创新材料有限公司 | Polyether-ether-ketone-based polymer alloy composite material and preparation method and application thereof |
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| WO2006091224A1 (en) * | 2004-07-06 | 2006-08-31 | Honeywell International Inc. | Antioxidant system for carbon-carbon brake materials with enhanced resistance to humidity exposure |
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| CN102250583A (en) * | 2011-05-21 | 2011-11-23 | 瑞阳汽车零部件（仙桃）有限公司 | Less-copper friction material composition for brake block |
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Patent Citations (4)
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| WO2006091224A1 (en) * | 2004-07-06 | 2006-08-31 | Honeywell International Inc. | Antioxidant system for carbon-carbon brake materials with enhanced resistance to humidity exposure |
| CN101493127A (en) * | 2008-10-31 | 2009-07-29 | 贵州新安航空机械有限责任公司 | Copper-based powder metallurgy high speed brake lining |
| 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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