KR20100072548A - Friction materials for brake pad - Google Patents
Friction materials for brake pad Download PDFInfo
- Publication number
- KR20100072548A KR20100072548A KR1020080130981A KR20080130981A KR20100072548A KR 20100072548 A KR20100072548 A KR 20100072548A KR 1020080130981 A KR1020080130981 A KR 1020080130981A KR 20080130981 A KR20080130981 A KR 20080130981A KR 20100072548 A KR20100072548 A KR 20100072548A
- Authority
- KR
- South Korea
- Prior art keywords
- friction material
- fiber
- brake pad
- material composition
- weight
- Prior art date
Links
- 239000002783 friction material Substances 0.000 title claims abstract description 33
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 13
- 239000011230 binding agent Substances 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 7
- 239000005011 phenolic resin Substances 0.000 claims abstract description 6
- 229920000271 Kevlar® Polymers 0.000 claims abstract description 5
- 239000004761 kevlar Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 229910001369 Brass Inorganic materials 0.000 claims abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000010951 brass Substances 0.000 claims abstract description 3
- 239000010949 copper Substances 0.000 claims abstract description 3
- 229910052802 copper Inorganic materials 0.000 claims abstract description 3
- 239000012783 reinforcing fiber Substances 0.000 claims description 8
- 150000002989 phenols Chemical class 0.000 claims description 4
- 229910021383 artificial graphite Inorganic materials 0.000 claims description 3
- 239000002006 petroleum coke Substances 0.000 claims description 3
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 2
- 229910006501 ZrSiO Inorganic materials 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 239000010455 vermiculite Substances 0.000 claims description 2
- 229910052902 vermiculite Inorganic materials 0.000 claims description 2
- 235000019354 vermiculite Nutrition 0.000 claims description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical group [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052845 zircon Inorganic materials 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- -1 boron modified phenol Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/149—Antislip compositions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/025—Compositions based on an organic binder
- F16D69/026—Compositions based on an organic binder containing fibres
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Braking Arrangements (AREA)
Abstract
Description
The present invention relates to a friction material composition for automobile brake pads.
Among brake systems for securing vehicle safety, friction materials for brake pads play a significant role in brake systems as they generate actual frictional forces during braking. Therefore, it should be able to satisfy various requirements such as securing safety, environmental friendliness, and economics.
However, many kinds of materials including asbestos, glass fiber, which can easily meet the above requirements are limited in use due to environmental problems.
Meanwhile, as a friction material for a European brake pad, a friction material for a high friction coefficient brake pad is required according to a braking feeling of European automobile users, so a low steel friction material having a high friction coefficient is used. However, the friction material for the high friction coefficient brake pads exposes a problem of a high temperature fade phenomenon in which the friction coefficient decreases when the temperature rises due to continuous braking (see FIG. 1).
Therefore, there is a need in this field for the development of a friction pad for brake pads, which also has pad resistance and wear resistance, together with conditions such as safety, environmental friendliness, and economy.
The present invention is to solve the problems of the prior art as described above, it is possible to ensure a stable coefficient of friction regardless of the operating environment, such as braking, high-speed braking, high temperature braking conditions; It is an object of the present invention to provide a friction pad composition for brake pads having excellent economic efficiency while having low environmental cost, low environmental resistance, fade resistance and wear resistance.
The present invention is a brake containing 9 to 11% by weight, 21 to 26% by weight of the binder, 19 to 23% by weight of lubricant, 35 to 40% by weight of reinforcing fibers, and 5 to 10% by weight of the filler, based on the total weight of the composition. A friction material composition for a pad is provided.
The present invention also provides a brake pad made of the friction material composition for the brake pad.
When the friction material composition for brake pads of the present invention is used, it is possible to secure a stable coefficient of friction regardless of the use environment, such as braking, high speed braking, high temperature braking, and safety is assured securely; It has eco-friendliness, fade resistance and abrasion resistance, and is economically low due to low production cost.
The friction material composition for brake pads of the present invention is 9 to 11% by weight, 21 to 26% by weight, 19 to 23% by weight of lubricant, 35 to 40% by weight of reinforcing fiber, and
As the binder, a modified phenol resin is preferably used, and a modified phenol resin can be used without limitation, which is commonly used in the art, and in particular, it is preferable to use a boron modified phenol resin.
The binder is preferably contained in 9 to 11% by weight, when included in less than 9% by weight, the bonding strength between the materials is not sufficient, the heat resistance may not be sufficiently reinforced, may be more than 11% by weight If included, the problem caused by the relatively smaller content of the other components than the effect of improving the bonding strength between the materials, or heat resistance reinforcement becomes larger.
As the soft erase, ZrSiO 4 , SiC, SiO 2 , MgO, Fe 3 CrO 4, and the like are preferably used, and these may be used alone or in combination of two or more.
The soft erase is preferably included in 21 to 26% by weight, when included in less than 21% by weight, there is a problem that it is difficult to maintain a sufficient frictional force, when included in excess of 26% by weight of the noise and friction of the brake disc Wear may be a problem.
As the lubricant, synthetic graphite (Synthetic Graphite), petroleum coke (Petroleum Coke), SnS2, ZnS and the like may be preferably used, these may be used alone or in combination of two or more.
The lubricant is preferably included in 19 to 23% by weight, when included in less than 19% by weight, it is difficult to fully exhibit the frictional force control and protective film forming function, and if included in excess of 23% by weight, the braking distance by weakening the frictional force Can lead to longer problems.
As the reinforcing fibers, steel fiber, copper fiber, brass fiber, kevlar, kevlar, etc. may be preferably used, and these may be used alone or two. More than one species may be used together.
The reinforcing fiber is preferably contained in 35 to 40% by weight, when included in less than 35% by weight, it is difficult to maintain the strength of the friction material, when included in excess of 40% by weight of other components than the improvement of the strength retention effect Because of this relatively small problem, the problem arises.
The filler is CaCO 3 , Vermiculite and the like can be preferably used. These may be used alone or in combination of two or more.
The filler is preferably included in 5 to 10% by weight, when included in less than 5% by weight, it is difficult to improve the wear resistance, when contained in more than 10% by weight of the other components than the improvement of the wear resistance effect is relatively The less problems, the bigger the problem.
Characteristic of the friction material composition for the brake pad is to reduce the content of the binder, to increase the content of the reinforcing fibers and soft erase to increase the friction coefficient while optimizing the content of the lubricant.
Hereinafter, the present invention will be described in more detail with reference to Examples. However, the following examples are provided to illustrate the present invention, and the present invention is not limited to the following examples and may be variously modified and changed.
Example 1 Preparation of Friction Material for Brake Pads
To the total weight of the composition, 9-11% by weight binder, 21-26% by weight softener, 19-23% by weight lubricant, 35-40% by weight reinforcing fiber, and 5-10% by weight filler were mixed in a mixer. The mixed material was temporarily molded at a pressure of 300 to 400 kg / cm at room temperature, and then thermoformed at a temperature range of 150 to 160 ° C. Thereafter, the thermoformed friction material was heat-treated at a temperature of 200 to 230 ° C. to produce a brake pad friction material.
Test Example: Measurement of Fade-resistant Characteristics with Temperature Rise
The friction coefficient change according to the temperature rise of the friction material manufactured in Example 1 and the pad used for Sportage Europe in the past was measured by an inertial dynamometer in the AMS fade test mode.
As a result of the test, the Sportage Europe pad showed a significant decrease in the coefficient of friction (fade phenomenon) with the temperature rise, but the friction material of the present invention exhibited a significantly reduced coefficient of friction (fade phenomenon) with the temperature rise. In addition, the AMS minimum friction coefficient was maintained at 0.35 or more (see Fig. 2).
1 is a graph showing a high temperature fade phenomenon that occurs in a friction material for high friction brake pads (a friction material for European brake pads).
Figure 2 is a graph showing the friction coefficient decrease (fade phenomenon) test results according to the temperature rise of the friction material of Example 1 and the conventional Sportage Europe friction material carried out according to the test example of the present invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020080130981A KR20100072548A (en) | 2008-12-22 | 2008-12-22 | Friction materials for brake pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020080130981A KR20100072548A (en) | 2008-12-22 | 2008-12-22 | Friction materials for brake pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20100072548A true KR20100072548A (en) | 2010-07-01 |
Family
ID=42635710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020080130981A KR20100072548A (en) | 2008-12-22 | 2008-12-22 | Friction materials for brake pad |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20100072548A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9505925B2 (en) | 2012-03-29 | 2016-11-29 | Mitsui Chemicals, Inc. | Phenol resin molding material, friction material, and phenol resin molded product |
| CN109611481A (en) * | 2018-12-26 | 2019-04-12 | 深圳市智雅墨族科技有限公司 | The modified heavy metal free friction material of environment-friendly type alkoxide gel and preparation method |
| RU2771085C1 (en) * | 2021-07-15 | 2022-04-26 | Федеральное государственное бюджетное образовательное учреждение высшего образования «Магнитогорский государственный технический университет им. Г.И. Носова" | Plastic lubricant |
-
2008
- 2008-12-22 KR KR1020080130981A patent/KR20100072548A/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9505925B2 (en) | 2012-03-29 | 2016-11-29 | Mitsui Chemicals, Inc. | Phenol resin molding material, friction material, and phenol resin molded product |
| CN109611481A (en) * | 2018-12-26 | 2019-04-12 | 深圳市智雅墨族科技有限公司 | The modified heavy metal free friction material of environment-friendly type alkoxide gel and preparation method |
| RU2771085C1 (en) * | 2021-07-15 | 2022-04-26 | Федеральное государственное бюджетное образовательное учреждение высшего образования «Магнитогорский государственный технический университет им. Г.И. Носова" | Plastic lubricant |
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