CN102010564A - Method for preparing carbon fiber brake lining - Google Patents
Method for preparing carbon fiber brake lining Download PDFInfo
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- CN102010564A CN102010564A CN 201010546360 CN201010546360A CN102010564A CN 102010564 A CN102010564 A CN 102010564A CN 201010546360 CN201010546360 CN 201010546360 CN 201010546360 A CN201010546360 A CN 201010546360A CN 102010564 A CN102010564 A CN 102010564A
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Abstract
The invention provides a method for preparing a carbon fiber brake lining, which belongs to the technical field of materials and solves the problems of poor interfacial binding force between a carbon fiber surface and a base body, and unreasonable material ratio of each part of the carbon fiber brake lining prepared by the conventional method for preparing the carbon fiber brake lining. The method for preparing the carbon fiber brake lining comprises the following steps of: A, pretreating carbon fibers; B, preparing resin solution; C, mixing powdery fillers; and D, forming. By the method for preparing the carbon fiber brake lining, the carbon fiber brake lining has low density, high braking ability, high environmental tolerance, low braking noise, high abrasion resistance, unchanged or slightly increased friction coefficient along with temperature rise, and high braking stability.
Description
Technical field
The present invention relates to the material technology field, relate to the material that is used to make brake bush, especially relate to a kind of preparation method of carbon fibre friction facing for brake device.
Background technology
Along with the enhancing of developing of automobile industry and people's awareness of safety, the vehicle braked problem is subject to people's attention gradually, and friction facing is the key part in the breaking system.Be used for arresting friction facing at present and mainly contain three classes: asbestos base friction facing, semi-metallic based friction facing and metal base firing friction facing.Wherein, asbestos base friction facing resistance to elevated temperatures and wearing no resistance, work-ing life is short, produces easily carcinogenic asbestos dust in brake process, has a strong impact on health of people.And metal base firing friction facing fragility is big, and friction temperature height and noise are big.Replaced by semi-metallic based friction facing gradually.Carbon fiber at the carbon materials that has random graphits structure more than 90%, not only has the wear-resistant self-lubricating of carbon materials as a kind of carbon content, has the heat-conductivity conducting of metallic substance and the heat-and corrosion-resistant of stupalith again.Because carbon fiber surface hydroxyl, carbonyl isopolarity group content are less, and the interface binding power between matrix is relatively poor, makes the excellent properties of carbon fiber fail to be not fully exerted at the composite braking liner.Carbon fibre friction facing for brake device is carbon/carbon composite braking liner basically at present, and the cost height is used for aviation field more.If can improve the combination between carbon fiber and matrix, adopt ordinary resin as matrix, give full play to the excellent properties of carbon fiber, will promote the carbon fiber friction facing to be used widely at automotive field.
For this reason, people have carried out long-term exploration, have proposed various solutions.For example, Chinese patent literature discloses a kind of carbon fibre friction facing for brake device [application number: 98113943.4], it is characterized in that: PAN-based carbon fiber is done toughener, some different ratios mineral powder are done friction modifiers, its concrete proportioning and technology are, get polyacrylonitrile carbon fiber 5-15% by its weight ratio, it is standby to scatter through cut-out, 1: 1 the ratio of resol 20-30% and ethanol of getting is dissolved, treat to carry out thorough mixing with carbon fiber in the banburying jar behind the phenol resin solution, fleut is by barium sulfate 6-20%, chromite powder 5-10%, Feldspar Powder 10-15%, aluminum oxide 2-6%, copper powder 6-30%, Graphite Powder 99 2-15%, kaolin 2-10%, talcum powder 2-5%, iron powder 15-20% forms.After mixing, add in the banburying jar and mix, mix after 80 ℃ temperature is carried out drying treatment with carbon fiber and resol ethanolic soln; The carbon fiber mixed condensation material of metal liner after shot peening, washing, gluing, dry back and drying processing carries out hot compression molding, the temperature requirement of hot compression molding is about 250 ℃, liner behind the hot compression molding is through thermal treatment, thermal treatment temp requires about 200 ℃, and the time is 2 hours.
Technical problems such as such scheme has improved the performance of friction facing to a certain extent, and still the interface binding power that still exists between carbon fiber surface and matrix is relatively poor, and the each several part material mixture ratio is reasonable inadequately.
Summary of the invention
The objective of the invention is at the problems referred to above, provide a kind of carbon fiber surface and resin matrix bonding force to strengthen, with low cost, manufacturing process simple, the preparation method of the carbon fibre friction facing for brake device of excellent performance.
For achieving the above object, the present invention has adopted following technical proposal: the preparation method of this stopper carbon fiber friction facing is characterized in that this preparation method comprises the steps:
A, pre-treatment of carbon fiber: carbon fiber is put in the salpeter solution, and heating for some time, it is standby to take out after drying;
B, preparation resin solution: resol and ethanol are mixed, and it is standby to be mixed with resin solution;
C, mixing fleut: will contain copper powder, aluminum oxide powder, kaolin powder and talcous fleut and stir;
D, moulding: in the banburying jar resin solution for preparing, pretreated carbon fiber and the fleut that stirs are carried out thorough mixing, drying treatment and through hot-die compression moulding makes stopper carbon fiber friction facing then.
The steps A here, B and C and out-of-order limit, and can determine order as required, also can carry out synchronously.After carbon fiber was handled through salpeter solution, the carbonyl and the hydroxyl on surface were increased greatly, make that the interlaminar shear strength between carbon fiber and matrix is improved, and interface binding power increases, and load is effectively transmitted.Not only density is low for prepared carbon fiber friction facing, and braking is good, and anti-environment capacity is strong, and brake noise is low, and wear resistance is good; And along with temperature rising frictional coefficient remains unchanged even can slightly raise, thereby has very outstanding insensitivity.Can also add other materials as required in the fleut, fleut normally mixes in homogenizer.
In the preparation method of above-mentioned carbon fibre friction facing for brake device, in above-mentioned steps A, carbon fiber is the chopped strand of 1-5mm or cuts into the chopped strand that length is 1-5mm by carbon fibre tow.
In the preparation method of above-mentioned carbon fibre friction facing for brake device, in above-mentioned steps A, be 75-85 ℃ in temperature and handled 6-10 hour down.
In the preparation method of above-mentioned carbon fibre friction facing for brake device, in above-mentioned steps A, the concentration of described salpeter solution is 60-70%.
In the preparation method of above-mentioned carbon fibre friction facing for brake device, in above-mentioned step B, described ethanol is dehydrated alcohol, and the weight ratio of dehydrated alcohol and resol is 1: 3 to 1: 12.5.
In the preparation method of above-mentioned carbon fibre friction facing for brake device, in above-mentioned step D, resin solution, pretreated carbon fiber and the fleut three's that stirs weight percent is respectively: resin solution 12-30%; Pretreated carbon fiber 35-55%; The fleut 25-35% that stirs.More particularly, weight percent is as follows: pretreated carbon fiber 35-55%; The fleut 25-35% that stirs; Resol 15-25%; Ethanol 2-5%.
In the preparation method of above-mentioned carbon fibre friction facing for brake device, described carbon fiber is the PAN base carbon fibre.
Compared with prior art, the preparation method's of this carbon fibre friction facing for brake device advantage is: after carbon fiber is handled through salpeter solution, the carbonyl and the hydroxyl on surface are increased greatly, make the interlaminar shear strength between carbon fiber and matrix be improved, interface binding power increases, and load is effectively transmitted.Not only density is low for prepared carbon fiber friction facing, and braking is good, and anti-environment capacity is strong, and brake noise is low, and wear resistance is good; And along with temperature rising frictional coefficient remains unchanged even can slightly raise, thereby has very outstanding insensitivity.
Description of drawings
Fig. 1 is a process flow sheet provided by the invention.
Embodiment
As shown in Figure 1, the preparation method of this stopper carbon fiber friction facing comprises the steps:
A, pre-treatment of carbon fiber: carbon fiber is put in the salpeter solution, and heating for some time, it is standby to take out after drying.Carbon fiber is the chopped strand of 1-5mm or cuts into the chopped strand that length is 1-5mm by carbon fibre tow, and carbon fiber is the PAN base carbon fibre.The concentration of salpeter solution is 60-70%.Being 75-85 ℃ in temperature handled 6-10 hour down.
B, preparation resin solution: resol and ethanol are mixed, and it is standby to be mixed with resin solution.Ethanol is dehydrated alcohol, and the weight ratio of dehydrated alcohol and resol is 1: 3 to 1: 12.5.
C, mixing fleut: will contain copper powder, aluminum oxide powder, kaolin powder and talcous fleut and stir.Can also add other materials as required in the fleut, fleut normally mixes in homogenizer.
D, moulding: in the banburying jar resin solution for preparing, pretreated carbon fiber and the fleut that stirs are carried out thorough mixing, drying treatment and through hot-die compression moulding makes stopper carbon fiber friction facing then.Resin solution, pretreated carbon fiber and the fleut three's that stirs weight percent is respectively: resin solution 12-30%; Pretreated carbon fiber 35-55%; The fleut 25-35% that stirs.More particularly, weight percent is as follows: pretreated carbon fiber 35-55%; The fleut 25-35% that stirs; Resol 15-25%; Ethanol 2-5%.
The steps A here, B and C and out-of-order limit, and can determine order as required, also can carry out synchronously.After carbon fiber was handled through salpeter solution, the carbonyl and the hydroxyl on surface were increased greatly, make that the interlaminar shear strength between carbon fiber and matrix is improved, and interface binding power increases, and load is effectively transmitted.Not only density is low for prepared carbon fiber friction facing, and braking is good, and anti-environment capacity is strong, and brake noise is low, and wear resistance is good; And along with temperature rising frictional coefficient remains unchanged even can slightly raise, thereby has very outstanding insensitivity.Can also add other materials as required in the fleut, fleut normally mixes in homogenizer.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used term morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (7)
1. the preparation method of a carbon fibre friction facing for brake device is characterized in that, this preparation method comprises the steps:
A, pre-treatment of carbon fiber: carbon fiber is put in the salpeter solution, and heating for some time, it is standby to take out after drying;
B, preparation resin solution: resol and ethanol are mixed, and it is standby to be mixed with resin solution;
C, mixing fleut: will contain copper powder, aluminum oxide powder, kaolin powder and talcous fleut and stir;
D, moulding: in the banburying jar resin solution for preparing, pretreated carbon fiber and the fleut that stirs are carried out thorough mixing, drying treatment and through hot-die compression moulding makes stopper carbon fiber friction facing then.
2. the preparation method of carbon fibre friction facing for brake device according to claim 1 is characterized in that, in above-mentioned steps A, carbon fiber is the chopped strand of 1-5mm or cuts into the chopped strand that length is 1-5mm by carbon fibre tow.
3. the preparation method of carbon fibre friction facing for brake device according to claim 2 is characterized in that, in above-mentioned steps A, is 75-85 ℃ in temperature and handles 6-10 hour down.
4. the preparation method of carbon fibre friction facing for brake device according to claim 2 is characterized in that, in above-mentioned steps A, the concentration of described salpeter solution is 60-70%.
5. according to the preparation method of the described carbon fibre friction facing for brake device of claim 1-4, it is characterized in that in above-mentioned step B, described ethanol is dehydrated alcohol, and the weight ratio of dehydrated alcohol and resol is 1: 3 to 1: 12.5.
6. the preparation method of carbon fibre friction facing for brake device according to claim 5, it is characterized in that, in above-mentioned step D, resin solution, pretreated carbon fiber and the fleut three's that stirs weight percent is respectively: resin solution 12-30%; Pretreated carbon fiber 35-55%; The fleut 25-35% that stirs.
7. the preparation method of carbon fibre friction facing for brake device according to claim 5 is characterized in that, described carbon fiber is the PAN base carbon fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010546360 CN102010564A (en) | 2010-11-16 | 2010-11-16 | Method for preparing carbon fiber brake lining |
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| CN 201010546360 CN102010564A (en) | 2010-11-16 | 2010-11-16 | Method for preparing carbon fiber brake lining |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106118599A (en) * | 2016-08-25 | 2016-11-16 | 江苏金麦穗新能源科技股份有限公司 | A kind of friction material production technology of rice wheat straw brake block mill ash brake block |
| CN106286657A (en) * | 2016-11-10 | 2017-01-04 | 无锡市明盛强力风机有限公司 | Brake liner blade technolgy is prepared in a kind of 3D printing |
| CN107542818A (en) * | 2017-08-04 | 2018-01-05 | 大连理工大学 | To retro-speed and the resin-matrix friction material of temperature muting sensitive sense and preparation method thereof |
| WO2018032269A1 (en) * | 2016-08-15 | 2018-02-22 | Abb Schweiz Ag | Electrically insulating composite material and electrical product |
| CN108368902A (en) * | 2015-12-01 | 2018-08-03 | 舍弗勒技术股份两合公司 | Wet type work-friction facing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1228448A (en) * | 1998-04-24 | 1999-09-15 | 吉林省广达摩擦制品有限公司 | Carbon fibre friction facing for brake device |
| CN1474072A (en) * | 2003-08-11 | 2004-02-11 | 卢能晓 | Carbon fibre brake-shoe and its producing process |
| CN101037508A (en) * | 2007-04-26 | 2007-09-19 | 中国计量学院 | Method for preparing friction material by wet type mixing material |
| CN101402779A (en) * | 2008-11-11 | 2009-04-08 | 长春市恒德摩擦制品有限公司 | Non-asbestos drilling machine braking block material and manufacturing process therefor |
-
2010
- 2010-11-16 CN CN 201010546360 patent/CN102010564A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1228448A (en) * | 1998-04-24 | 1999-09-15 | 吉林省广达摩擦制品有限公司 | Carbon fibre friction facing for brake device |
| CN1474072A (en) * | 2003-08-11 | 2004-02-11 | 卢能晓 | Carbon fibre brake-shoe and its producing process |
| CN101037508A (en) * | 2007-04-26 | 2007-09-19 | 中国计量学院 | Method for preparing friction material by wet type mixing material |
| CN101402779A (en) * | 2008-11-11 | 2009-04-08 | 长春市恒德摩擦制品有限公司 | Non-asbestos drilling machine braking block material and manufacturing process therefor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108368902A (en) * | 2015-12-01 | 2018-08-03 | 舍弗勒技术股份两合公司 | Wet type work-friction facing |
| WO2018032269A1 (en) * | 2016-08-15 | 2018-02-22 | Abb Schweiz Ag | Electrically insulating composite material and electrical product |
| CN106118599A (en) * | 2016-08-25 | 2016-11-16 | 江苏金麦穗新能源科技股份有限公司 | A kind of friction material production technology of rice wheat straw brake block mill ash brake block |
| CN106286657A (en) * | 2016-11-10 | 2017-01-04 | 无锡市明盛强力风机有限公司 | Brake liner blade technolgy is prepared in a kind of 3D printing |
| CN107542818A (en) * | 2017-08-04 | 2018-01-05 | 大连理工大学 | To retro-speed and the resin-matrix friction material of temperature muting sensitive sense and preparation method thereof |
| CN107542818B (en) * | 2017-08-04 | 2020-02-18 | 大连理工大学 | Resin-based friction material sensitive to low braking speed and temperature and preparation method thereof |
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Application publication date: 20110413 |