CN105061987A - Addition agent for carbon-based ceramic friction material mixing and preparation method thereof - Google Patents
Addition agent for carbon-based ceramic friction material mixing and preparation method thereof Download PDFInfo
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- CN105061987A CN105061987A CN201510546398.3A CN201510546398A CN105061987A CN 105061987 A CN105061987 A CN 105061987A CN 201510546398 A CN201510546398 A CN 201510546398A CN 105061987 A CN105061987 A CN 105061987A
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Abstract
The invention relates to the technical field of modifiers for carbon-based ceramic material mixing, in particular to an addition agent for carbon-based ceramic friction material mixing and a preparation method thereof. By appropriate matching of butyronitrile modified resin, molybdenum disulfide, magnesium oxide, graphite, sodium carbonate, gasoline, drainage oil, pine oil, foam iron powder and plant oil, a microscopic biochemical reaction is performed between the raw materials, the effect of mutual modification is achieved, so that the modification of carbon-based ceramic materials can be promoted in the process of adding the addition agent to the carbon-based ceramic material to perform mixing, the quality of the carbon-based ceramic material is improved, the quality of carbon-based ceramics is further guaranteed, the dynamic and static friction coefficient of the prepared carbon-based ceramics is high, and the wear rate is low. The prepared carbon-based ceramics are high in heat resistance, and the safety of the carbon-based ceramics in the field of braking is improved.
Description
Technical field
The present invention relates to carbon base ceramics friction materials raw material mixing properties-correcting agent technical field, especially a kind of carbon base ceramics friction materials raw material mixing additive and preparation method thereof.
Background technology
Friction materials is a kind of metal or nonmetallic composite of wear-resisting, the resistance to elevated temperatures mainly for the manufacture of various braking and transmission device.As braking sheet for automobile, claim sheet also known as stopper.Service brake and parking braking can be divided into according to the difference of purposes.At present for the research comparatively horn of plenty of vehicle brake-holder block, its Document Quantity is larger.Main research trend in wear-resisting, frictional behaviour is more excellent, high temperature resistant, not easily skid, be namely exactly improve braking effect, reduce safety coefficient.But, for the research of the brake(-holder) block of home and abroad, although have a large amount of technical literatures and the appearance of technological standard, but based on this, the technology in vehicle brake-holder block field yet also exists more deficiency, toughness as brake(-holder) block is poor, intensity is more weak, resistance to elevated temperatures is poor, easily skid, fill a prescription unreasonable, the technical problems such as energy consumption is large.And the above-mentioned end that is rooted in, it is in preparation process, in the raw material mixing process of mainly carbon base ceramics friction materials, its raw material is not reasonably processed, and then make the interaction of raw material be difficult to ensure the quality of carbon base ceramics friction materials, and then cause the phenomenons such as poor toughness, intensity are weak, non-refractory, easily skidding, for this reason, this investigator is in conjunction with above-mentioned technical problem, make research for the additive in ceramic frication material raw material mixing process, and then provide new approaches for carbon base ceramics preparing technical field carries out overcoming of above-mentioned technological deficiency.
Summary of the invention
In order to solve the above-mentioned technical problem existed in prior art, the invention provides a kind of carbon base ceramics friction materials raw material mixing additive and preparation method thereof.
Be achieved particular by following technical scheme:
A kind of carbon friction material ceramic raw material mixing additive, its material composition take parts by weight as butyronitrile modified resin 20-30 part, molybdenumdisulphide 3-9 part, magnesium oxide 0.5-1.3 part, graphite 3-7 part, sodium carbonate 2-7 part, gasoline 1-3 part, sewer oil 3-5 part, pine tar 5-9 part, foam ferrous powder 1-3 part, plant ash 0.3-0.7 part.
Described material composition take parts by weight as butyronitrile modified resin 25 parts, molybdenumdisulphide 6 parts, 1 part, magnesium oxide, 5 parts, graphite, 5 parts, sodium carbonate, 2 parts, gasoline, sewer oil 4 parts, pine tar 7 parts, foam ferrous powder 2 parts, plant ash 0.5 part.
Described butyronitrile modified resin is the one in nbr modified phenolic resins, butyronitrile modified epoxy, butyronitrile modification cardanol epoxy resin.
Described nbr modified phenolic resins, its method of modifying is: in alkaline catalysts effect, phenol and formaldehyde are reacted 100-150min at 70 ~ 80 DEG C, and reaction reach 60-70min after, add the carboxylated nbr accounting for alkaline catalysts 1-3% wherein, above-mentioned phenol and the mass ratio of formaldehyde are 10:11 ~ 13; Above-mentioned alkaline catalysts add-on is the 3-7% of phenol, and after carboxylated nbr is added, employing stirring speed is 150-200r/min stir process 1-6min, adjusting stirring velocity is again that 300-400r/min is stirred to phenol and the formaldehyde reaction time reaches 100-150min, being placed on temperature is again process 10-20s in 120-150 DEG C, again it is cooled to normal temperature at 30-40s, can nbr modified phenolic resins be obtained.
Described alkaline catalysts is the one in sodium hydroxide, calcium hydroxide, potassium hydroxide.
Described butyronitrile modified epoxy, its method of modifying be by carboxylated nbr and epoxy resin in the environment of 300-900 DEG C, control vacuum tightness is 0.02-0.08MPa is after 3:9 mixing with mass ratio, and by its constant temperature process 20-30s, again temperature is adjusted to 100-250s at 10-15s by it, constant temperature 0.3 ~ 1min, again temperature is adjusted to 50-80 DEG C at 5-8s by it, constant temperature process 0.2 ~ 0.7min, again temperature is adjusted to 30-40 DEG C at 3s by it, constant temperature 10-20min, is cooled to normal temperature, can obtain butyronitrile modified epoxy.
Described butyronitrile modification cardanol epoxy resin, its method of modifying is 1 ~ 3:7 ~ 11 mix after with cardanol epoxy resin according to mass ratio by carboxylated nbr, again its temperature is adjusted to 100-200 DEG C, and employing stirring speed is 1000-2000r/min stir process 10-20min, butyronitrile modification cardanol epoxy resin can be obtained.
A preparation method for carbon base ceramics friction materials raw material mixing additive, comprises the following steps:
(1) after butyronitrile modified resin, molybdenumdisulphide, magnesium oxide, graphite, sodium carbonate being mixed according to proportioning, being placed on temperature is again 500-800 DEG C of pre-treatment 1-3min, be placed on grinding machine for grinding again and cross 70-90 mesh sieve, be placed on again in tempering tank, and adding plant ash wherein, employing stirring speed is 100-1000r/min stir process 10-20min, then adds foam ferrous powder wherein, being placed on temperature is leave standstill process 10-30min in the environment of 60-90 DEG C, stand-by;
(2) to step 1) add sewer oil, pine tar in the material that processed, and adjust temperature be 130-170 DEG C process 10-20min, adjusting temperature is again 70-90 DEG C, and employing stirring speed is 1000-3000r/min process 30-60min, again its temperature is cooled to 10-20 DEG C at 10-20s, wherein will adds gasoline, and after adopting 100-200r/min stir process 1-3min, sent in processor for ultrasonic wave again and processed 20-30s, can additive be obtained.
Described processor for ultrasonic wave, its hyperacoustic frequency is 30-3000Hz.
Compared with prior art, technique effect of the present invention is embodied in:
By by butyronitrile modified resin, molybdenumdisulphide, magnesium oxide, graphite, sodium carbonate, gasoline, sewer oil, pine tar, foam ferrous powder, plant ash carries out appropriate proportioning, and then make the biochemical reaction that microcosmic occurs between each raw material, reach mutual modifying function, and then make in the process adding the mixing of carbon base ceramics raw material, the modification of carbon base ceramics raw material can be promoted, and then improve the quality of carbon base ceramics raw material, further guarantee the quality of carbon base ceramics, make the static and dynamic friction coefficient of the carbon base ceramics prepared higher, wear rate is lower, and the carbon base ceramics heat hardiness of preparation is stronger, and then improve the security of carbon base ceramics for brake field.
The present invention especially carries out mix and match in conjunction with the ratio of mixture of each raw material in preparation technology, and then the environment making each raw material have an effect each other is protected, and then each raw material action effect is each other enhanced, and then improve the quality of carbon base ceramics raw material mixing additive, and then make the additive prepared be added in carbon base ceramics raw material, make carbon base ceramics raw material that microcosmic biochemical action occur each other, improve the quality of carbon base ceramics raw material, further ensure that the quality of carbon base ceramics.
The present invention further combines the kind to butyronitrile modified resin in additive again, and for the different method of modifying that adopts of different sorts, and then make the quality of additive prepared more excellent.
The present invention is further by being added in the raw material mixing in carbon base ceramics preparation process by above-mentioned additive, and then after modification being carried out to raw material by additive, use it for the preparation of carbon base ceramics friction materials again, and then the static and dynamic friction coefficient ratio making the carbon base ceramics friction materials prepared is 95.78 ~ 97.89%, wear rate 0.37 ~ 4.13%, and be 1350-2370 DEG C in temperature, it is completely undeformed.
Embodiment
Below in conjunction with concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done description.
Embodiment 1
A kind of carbon base ceramics friction materials raw material mixing additive, its material composition is butyronitrile modified resin 20kg, molybdenumdisulphide 3kg, magnesium oxide 0.5kg, graphite 3kg, sodium carbonate 2kg, gasoline 1kg, sewer oil 3kg, pine tar 5kg, foam ferrous powder 1kg, plant ash 0.3kg by weight.
Described butyronitrile modified resin is nbr modified phenolic resins, its method of modifying is: in alkaline catalysts effect, phenol and formaldehyde are reacted 100min at 70 DEG C, and reaction reach 60min after, add the carboxylated nbr accounting for alkaline catalysts 1% wherein, above-mentioned phenol and the mass ratio of formaldehyde are 10:11; Above-mentioned alkaline catalysts add-on is 3% of phenol, and after carboxylated nbr is added, employing stirring speed is 150r/min stir process 1min, adjusting stirring velocity is again that 300r/min is stirred to phenol and the formaldehyde reaction time reaches 100min, being placed on temperature is again process 10s in 120 DEG C, again it is cooled to normal temperature at 30s, can nbr modified phenolic resins be obtained.
Described alkaline catalysts is sodium hydroxide.
The preparation method of carbon base ceramics friction materials raw material mixing additive, comprises the following steps:
(1) after butyronitrile modified resin, molybdenumdisulphide, magnesium oxide, graphite, sodium carbonate being mixed according to proportioning, being placed on temperature is again 500 DEG C of pre-treatment 1min, be placed on grinding machine for grinding again and cross 70 mesh sieves, be placed on again in tempering tank, and adding plant ash wherein, employing stirring speed is 100r/min stir process 10min, then adds foam ferrous powder wherein, being placed on temperature is leave standstill process 10min in the environment of 60 DEG C, stand-by;
(2) to step 1) add sewer oil, pine tar in the material that processed, and adjust temperature be 130 DEG C process 10min, adjusting temperature is again 70 DEG C, and employing stirring speed is 1000r/min process 30min, again its temperature is cooled to 10 DEG C at 10s, wherein will adds gasoline, and after adopting 100r/min stir process 1min, sent in processor for ultrasonic wave again and processed 20s, can additive be obtained.
Described processor for ultrasonic wave, its hyperacoustic frequency is 30Hz.
Embodiment 2
A kind of carbon base ceramics friction materials raw material mixing additive, its material composition take parts by weight as butyronitrile modified resin 30kg, molybdenumdisulphide 9kg, magnesium oxide 1.3kg, graphite 7kg, sodium carbonate 7kg, gasoline 3kg, sewer oil 5kg, pine tar 9kg, foam ferrous powder 3kg, plant ash 0.7kg.
Described butyronitrile modified resin is butyronitrile modified epoxy.
Described butyronitrile modified epoxy, its method of modifying is by carboxylated nbr and epoxy resin in the environment of 300 DEG C, and to control vacuum tightness be 0.02MPa is after 3:9 mixing with mass ratio, and by its constant temperature process 20s, again temperature is adjusted to 100s at 10s by it, constant temperature 0.3min, then temperature is adjusted to 50 DEG C at 5s by it, constant temperature process 0.2min, again temperature is adjusted to 30 DEG C at 3s by it, constant temperature 10min, is cooled to normal temperature, can obtain butyronitrile modified epoxy.
The preparation method of carbon base ceramics friction materials raw material mixing additive, comprises the following steps:
(1) after butyronitrile modified resin, molybdenumdisulphide, magnesium oxide, graphite, sodium carbonate being mixed according to proportioning, being placed on temperature is again 800 DEG C of pre-treatment 3min, be placed on grinding machine for grinding again and cross 90 mesh sieves, be placed on again in tempering tank, and adding plant ash wherein, employing stirring speed is 1000r/min stir process 20min, then adds foam ferrous powder wherein, being placed on temperature is leave standstill process 30min in the environment of 90 DEG C, stand-by;
(2) to step 1) add sewer oil, pine tar in the material that processed, and adjust temperature be 170 DEG C process 20min, adjusting temperature is again 90 DEG C, and employing stirring speed is 3000r/min process 60min, again its temperature is cooled to 20 DEG C at 20s, wherein will adds gasoline, and after adopting 200r/min stir process 3min, sent in processor for ultrasonic wave again and processed 30s, can additive be obtained.
Described processor for ultrasonic wave, its hyperacoustic frequency is 3000Hz.
Embodiment 3
A kind of carbon base ceramics friction materials raw material mixing additive, its material composition is butyronitrile modified resin 25kg, molybdenumdisulphide 6kg, magnesium oxide 1kg, graphite 5kg, sodium carbonate 5kg, gasoline 2kg, sewer oil 4kg, pine tar 7kg, foam ferrous powder 2kg, plant ash 0.5kg by weight.
Described butyronitrile modified resin is butyronitrile modification cardanol epoxy resin.
Described butyronitrile modification cardanol epoxy resin, its method of modifying is 1:7 mix after with cardanol epoxy resin according to mass ratio by carboxylated nbr, again its temperature is adjusted to 100 DEG C, and employing stirring speed is 1000r/min stir process 10min, butyronitrile modification cardanol epoxy resin can be obtained.
The preparation method of carbon base ceramics friction materials raw material mixing additive, comprises the following steps:
(1) after butyronitrile modified resin, molybdenumdisulphide, magnesium oxide, graphite, sodium carbonate being mixed according to proportioning, being placed on temperature is again 600 DEG C of pre-treatment 2min, be placed on grinding machine for grinding again and cross 80 mesh sieves, be placed on again in tempering tank, and adding plant ash wherein, employing stirring speed is 500r/min stir process 15min, then adds foam ferrous powder wherein, being placed on temperature is leave standstill process 20min in the environment of 80 DEG C, stand-by;
(2) to step 1) add sewer oil, pine tar in the material that processed, and adjust temperature be 150 DEG C process 15min, adjusting temperature is again 80 DEG C, and employing stirring speed is 2000r/min process 50min, again its temperature is cooled to 15 DEG C at 15s, wherein will adds gasoline, and after adopting 150r/min stir process 2min, sent in processor for ultrasonic wave again and processed 25s, can additive be obtained.
Described processor for ultrasonic wave, its hyperacoustic frequency is 1000Hz.
Embodiment 4
On the basis of embodiment 1, other are all with embodiment 1, described nbr modified phenolic resins, its method of modifying is: in alkaline catalysts effect, phenol and formaldehyde are reacted 130min at 75 DEG C, and reaction reach 65min after, add the carboxylated nbr accounting for alkaline catalysts 2% wherein, above-mentioned phenol and the mass ratio of formaldehyde are 10:12; Above-mentioned alkaline catalysts add-on is 5% of phenol, and after carboxylated nbr is added, employing stirring speed is 180r/min stir process 5min, adjusting stirring velocity is again that 350r/min is stirred to phenol and the formaldehyde reaction time reaches 130min, being placed on temperature is again process 15s in 130 DEG C, again it is cooled to normal temperature at 35s, can nbr modified phenolic resins be obtained.
Described alkaline catalysts is potassium hydroxide.
Embodiment 5
On the basis of embodiment 1, other are all with embodiment 1, described nbr modified phenolic resins, its method of modifying is: in alkaline catalysts effect, phenol and formaldehyde are reacted 150min at 80 DEG C, and reaction reach 70min after, add the carboxylated nbr accounting for alkaline catalysts 3% wherein, above-mentioned phenol and the mass ratio of formaldehyde are 10:13; Above-mentioned alkaline catalysts add-on is 7% of phenol, and after carboxylated nbr is added, employing stirring speed is 200r/min stir process 6min, adjusting stirring velocity is again that 400r/min is stirred to phenol and the formaldehyde reaction time reaches 150min, being placed on temperature is again process 20s in 150 DEG C, again it is cooled to normal temperature at 40s, can nbr modified phenolic resins be obtained.
Described alkaline catalysts is calcium hydroxide.
Embodiment 6
On the basis of embodiment 2, other are all with embodiment 2, described butyronitrile modified epoxy, its method of modifying be by carboxylated nbr and epoxy resin in the environment of 600 DEG C, control vacuum tightness is 0.06MPa is after 3:9 mixing with mass ratio, and by its constant temperature process 25s, again temperature is adjusted to 150s at 13s by it, constant temperature 0.5min, then temperature is adjusted to 70 DEG C at 7s by it, constant temperature process 0.5min, again temperature is adjusted to 35 DEG C at 3s by it, constant temperature 15min, is cooled to normal temperature, can obtain butyronitrile modified epoxy.
Embodiment 7
On the basis of embodiment 2, other are all with embodiment 2, described butyronitrile modified epoxy, its method of modifying be by carboxylated nbr and epoxy resin in the environment of 900 DEG C, control vacuum tightness is 0.08MPa is after 3:9 mixing with mass ratio, and by its constant temperature process 30s, again temperature is adjusted to 250s at 15s by it, constant temperature 1min, then temperature is adjusted to 80 DEG C at 8s by it, constant temperature process 0.7min, again temperature is adjusted to 40 DEG C at 3s by it, constant temperature 20min, is cooled to normal temperature, can obtain butyronitrile modified epoxy.
Embodiment 8
On the basis of embodiment 3, other are all with embodiment 3, described butyronitrile modification cardanol epoxy resin, its method of modifying is 2:9 mix after with cardanol epoxy resin according to mass ratio by carboxylated nbr, again its temperature is adjusted to 150 DEG C, and employing stirring speed is 1500r/min stir process 15min, butyronitrile modification cardanol epoxy resin can be obtained.
Embodiment 9
On the basis of embodiment 3, other are all with embodiment 3, described butyronitrile modification cardanol epoxy resin, its method of modifying is 3:11 mix after with cardanol epoxy resin according to mass ratio by carboxylated nbr, again its temperature is adjusted to 200 DEG C, and employing stirring speed is 2000r/min stir process 20min, butyronitrile modification cardanol epoxy resin can be obtained.
Claims (9)
1. a carbon base ceramics friction materials raw material mixing additive, it is characterized in that, its material composition take parts by weight as butyronitrile modified resin 20-30 part, molybdenumdisulphide 3-9 part, magnesium oxide 0.5-1.3 part, graphite 3-7 part, sodium carbonate 2-7 part, gasoline 1-3 part, sewer oil 3-5 part, pine tar 5-9 part, foam ferrous powder 1-3 part, plant ash 0.3-0.7 part.
2. carbon base ceramics friction materials raw material mixing additive as claimed in claim 1, it is characterized in that, described material composition take parts by weight as butyronitrile modified resin 25 parts, molybdenumdisulphide 6 parts, 1 part, magnesium oxide, 5 parts, graphite, 5 parts, sodium carbonate, 2 parts, gasoline, sewer oil 4 parts, pine tar 7 parts, foam ferrous powder 2 parts, plant ash 0.5 part.
3. carbon base ceramics friction materials raw material mixing additive as claimed in claim 1 or 2, it is characterized in that, described butyronitrile modified resin is the one in nbr modified phenolic resins, butyronitrile modified epoxy, butyronitrile modification cardanol epoxy resin.
4. carbon base ceramics friction materials raw material mixing additive as claimed in claim 3, it is characterized in that, described nbr modified phenolic resins, its method of modifying is: in alkaline catalysts effect, phenol and formaldehyde are reacted 100-150min at 70 ~ 80 DEG C, and reaction reach 60-70min after, add the carboxylated nbr accounting for alkaline catalysts 1-3% wherein, above-mentioned phenol and the mass ratio of formaldehyde are 10:11 ~ 13; Above-mentioned alkaline catalysts add-on is the 3-7% of phenol, and after carboxylated nbr is added, employing stirring speed is 150-200r/min stir process 1-6min, adjusting stirring velocity is again that 300-400r/min is stirred to phenol and the formaldehyde reaction time reaches 100-150min, being placed on temperature is again process 10-20s in 120-150 DEG C, again it is cooled to normal temperature at 30-40s, can nbr modified phenolic resins be obtained.
5. carbon base ceramics friction materials raw material mixing additive as claimed in claim 4, it is characterized in that, described alkaline catalysts is the one in sodium hydroxide, calcium hydroxide, potassium hydroxide.
6. carbon base ceramics friction materials raw material mixing additive as claimed in claim 3, it is characterized in that, described butyronitrile modified epoxy, its method of modifying be by carboxylated nbr and epoxy resin in the environment of 300-900 DEG C, control vacuum tightness is 0.02-0.08MPa is after 3:9 mixing with mass ratio, and by its constant temperature process 20-30s, again temperature is adjusted to 100-250s at 10-15s by it, constant temperature 0.3 ~ 1min, again temperature is adjusted to 50-80 DEG C at 5-8s by it, constant temperature process 0.2 ~ 0.7min, again temperature is adjusted to 30-40 DEG C at 3s by it, constant temperature 10-20min, be cooled to normal temperature, butyronitrile modified epoxy can be obtained.
7. carbon base ceramics friction materials raw material mixing additive as claimed in claim 3, it is characterized in that, described butyronitrile modification cardanol epoxy resin, its method of modifying is 1 ~ 3:7 ~ 11 mix after with cardanol epoxy resin according to mass ratio by carboxylated nbr, again its temperature is adjusted to 100-200 DEG C, and employing stirring speed is 1000-2000r/min stir process 10-20min, butyronitrile modification cardanol epoxy resin can be obtained.
8. the preparation method of the carbon base ceramics friction materials raw material mixing additive as described in any one of claim 1-7, is characterized in that, comprise the following steps:
(1) after butyronitrile modified resin, molybdenumdisulphide, magnesium oxide, graphite, sodium carbonate being mixed according to proportioning, being placed on temperature is again 500-800 DEG C of pre-treatment 1-3min, be placed on grinding machine for grinding again and cross 70-90 mesh sieve, be placed on again in tempering tank, and adding plant ash wherein, employing stirring speed is 100-1000r/min stir process 10-20min, then adds foam ferrous powder wherein, being placed on temperature is leave standstill process 10-30min in the environment of 60-90 DEG C, stand-by;
(2) to step 1) add sewer oil, pine tar in the material that processed, and adjust temperature be 130-170 DEG C process 10-20min, adjusting temperature is again 70-90 DEG C, and employing stirring speed is 1000-3000r/min process 30-60min, again its temperature is cooled to 10-20 DEG C at 10-20s, wherein will adds gasoline, and after adopting 100-200r/min stir process 1-3min, sent in processor for ultrasonic wave again and processed 20-30s, can additive be obtained.
9. the preparation method of carbon base ceramics friction materials raw material mixing additive as claimed in claim 8, it is characterized in that, described processor for ultrasonic wave, its hyperacoustic frequency is 30-3000Hz.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107641184A (en) * | 2017-09-25 | 2018-01-30 | 常州新区金利宝塑料制品有限公司 | A kind of preparation method of thermostable phenolic resin bonding agent |
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| EP1203897A1 (en) * | 2000-11-06 | 2002-05-08 | BorgWarner Inc. | Friction material formed by deposition of friction modifiers on high, wet energy carbonaceous friction materials |
| WO2007126970A2 (en) * | 2006-03-29 | 2007-11-08 | Borgwarner Inc. | Friction materials made with resins containing polar functional groups |
| CN102585767A (en) * | 2011-12-31 | 2012-07-18 | 信义集团公司 | Copper-free carbon-based friction material |
| CN104235242A (en) * | 2014-08-28 | 2014-12-24 | 万山特区宏安摩擦材料有限公司 | Carbon-based ceramic brake block and preparing method of carbon-based ceramic brake block |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1064282A (en) * | 1992-03-25 | 1992-09-09 | 国营八五七厂 | Wet carbon-base friction material and manufacture method thereof |
| EP1203897A1 (en) * | 2000-11-06 | 2002-05-08 | BorgWarner Inc. | Friction material formed by deposition of friction modifiers on high, wet energy carbonaceous friction materials |
| WO2007126970A2 (en) * | 2006-03-29 | 2007-11-08 | Borgwarner Inc. | Friction materials made with resins containing polar functional groups |
| CN102585767A (en) * | 2011-12-31 | 2012-07-18 | 信义集团公司 | Copper-free carbon-based friction material |
| CN104235242A (en) * | 2014-08-28 | 2014-12-24 | 万山特区宏安摩擦材料有限公司 | Carbon-based ceramic brake block and preparing method of carbon-based ceramic brake block |
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