JPH0125927B2 - - Google Patents
Info
- Publication number
- JPH0125927B2 JPH0125927B2 JP16034780A JP16034780A JPH0125927B2 JP H0125927 B2 JPH0125927 B2 JP H0125927B2 JP 16034780 A JP16034780 A JP 16034780A JP 16034780 A JP16034780 A JP 16034780A JP H0125927 B2 JPH0125927 B2 JP H0125927B2
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- weight
- parts
- friction material
- friction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920001971 elastomer Polymers 0.000 claims description 23
- 239000005060 rubber Substances 0.000 claims description 23
- 239000002783 friction material Substances 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 12
- 229920000058 polyacrylate Polymers 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000006229 carbon black Substances 0.000 claims description 8
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 description 7
- 229920005558 epichlorohydrin rubber Polymers 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 238000004073 vulcanization Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000003712 anti-aging effect Effects 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000011265 semifinished product Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010077 mastication Methods 0.000 description 1
- 230000018984 mastication Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000010058 rubber compounding Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Description
【発明の詳細な説明】
本発明はゴム系統の湿式摩擦材に関するもの
で、摩擦係数が高くしかも耐摩耗性も向上した湿
式摩擦材を提供するのを目的としている。
従来湿式摩擦材としては先ず焼結合金が使用さ
れていたが、これは性能には優れているも高価で
あるため極く限定された個所以外には余り多く使
用されていない。次いで摩擦材用紙材が使用さ
れ、これが現在一般に多用されている。
そこでこれらの湿式摩擦材は多板にして使用し
必要なブレーキ力を得ているが摩擦材用紙材の場
合には長期間の使用に対しては膨潤等の問題もあ
りその改善が強く望まれているのが現状である。
本発明は上記の摩擦材用紙材に代えてゴム系を
使用して高い摩擦係数と優れた耐摩耗性を併せ有
する新規な湿式摩擦材に係わるものである。
先ず本発明の湿式摩擦材においては耐熱性、耐
油性がありしかも作業性のよい弾性ゴムとして塩
基性ポリアクレートゴム及びエピクロールヒドリ
ンゴムを選定し、これに或る程度の硬度を与える
ためにカーボンブラツク及び／又はホワイトカー
ボンを配合し、更に相手摩擦金属と摩擦して所定
の摩擦係数を出すようにチタン酸カリウム繊維等
のセラミツクス繊維を混入している。
本発明の湿式摩擦材の代表的配合組成は次の通
りである。
塩基性ポリアクレートゴム 0.5〜60重量部
エピクロールヒドリンゴム 0.5〜40 〃
カーボンブラツク ５〜60 〃
ホワイトカーボン 0.5〜10 〃
チタン酸カリウム繊維 ５〜60 〃
加硫剤その他助剤 若 干
ポリアクリレートゴムは塩基性とエポキシ系と
に大別されるが、本発明ではエピクロールヒドリ
ンゴムと混合使用するために塩基性ポリアクリレ
ートゴムを使用している。
エピクロールヒドリンゴムも耐油性、耐熱性を
有し、しかもエピクロールヒドリンゴムはポリア
クリレートゴムとの併用によつてて作業性が容易
になり又耐寒性も向上する。
尚ポリアクリレートゴム0.5〜60重量部、エピ
クロールヒドリンゴム0.5〜40重量部の配合範囲
で上記の併用効果が十分に発揮される。ゴム系配
合にカーボンブラツクを使用することは普通であ
るが、カーボンブラツクの１部をホワイトカーボ
ンに代替して使用することもできる。カーボンブ
ラツクとしてはFEF種を使用するか又はHAF種
或いはこれらの併用によるのが好ましい。ホワイ
トカーボンは硬度の調整とコスト引下げの効果を
もつ。
セラミツクス繊維としてはチタン酸カリウム繊
維が効果的である。チタン酸カリウム繊維は硬度
がマイクロ・ビツカーズ硬度で550〜600Kg／mm2位
あるが、これは上記のポリアクリレートゴム及び
エピクロールヒドリンゴムとの併用に際し、ゴム
練りの素練りにおいて繊維が折れにくゝ又混合し
易く、その結果ゴム弾性体中に平均に混入するこ
とが容易である。
当然のことゝして加硫剤、老化防止剤、加硫促
進剤等を若干混入することは言うまでもない。
次の本発明の実施例を示す。
配合組成 重量％
塩基性ポリアクリレートゴム 45
エピクロールヒドリンゴム 5
カーボンブラツク 15
ホワイトカーボン 5
チタン酸カリウム繊維 30
加硫剤
加硫促進剤
加硫安定剤
老化防止剤 少 量
塩基性ポリアクリレートゴムとエピクロールヒ
ドリンゴムとを同時にゴム練ロールにより素練り
した後、カーボンブラツク次いでホワイトカーボ
ンを混入し、然る後加硫剤、加硫促進剤、加硫安
定剤、老化防止剤等を入れ、最後にチタン酸カリ
ウム繊維を入れてよく練り込む。これを所定のシ
ートにしてから一定の形状に切り取り加熱加圧し
て所望の形状に整形してから所定の金属板に接着
剤を用いて貼り合せ再度加熱加圧して半製品とす
る。
又予め所定の金属板に接着剤を塗布しておき、
前記の練り終つて所定の厚みに切り取つたゴム材
を貼り合せ（場合によりその金属板の両側にゴム
材を貼り合せることがある）、然る後加熱加圧し
て半製品とする。これらの半製品はその後所定の
温度で長時間加硫を行い製品とする。
このようにして得られたゴム系摩擦材の油中に
おける性能は次の通りであつた。
試験条件
摩擦材接触面 50φ FC−25
周 速 ３ｍ／sec
面 圧 7.5Kg／cm2
摩擦方法 10sec 摩擦
5sec 休止
の断続摩擦
使用油 エンジン油 120℃
（試験品全体が油中に浸漬）
【表】DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rubber-based wet friction material, and an object of the present invention is to provide a wet friction material that has a high coefficient of friction and improved wear resistance. Conventionally, sintered alloys have been used as wet friction materials, but although they have excellent performance, they are expensive, so they are not used in many places other than in very limited areas. Next, a friction paper material is used, which is now commonly used. Therefore, these wet friction materials are used in multiple plates to obtain the necessary braking force, but in the case of paper friction materials, there are problems such as swelling when used for a long period of time, and improvement of these problems is strongly desired. The current situation is that The present invention relates to a novel wet-type friction material that uses a rubber-based material instead of the above-mentioned paper friction material and has both a high coefficient of friction and excellent wear resistance. First, for the wet friction material of the present invention, basic polyacrylate rubber and epichlorohydrin rubber are selected as elastic rubbers that are heat resistant, oil resistant, and have good workability, and carbon is added to give them a certain degree of hardness. Black and/or white carbon is blended, and ceramic fibers such as potassium titanate fibers are also mixed in so as to rub against the mating friction metal to produce a predetermined coefficient of friction. A typical composition of the wet friction material of the present invention is as follows. Basic polyacrylate rubber 0.5-60 parts by weight Epichlorohydrin rubber 0.5-40 〃 Carbon black 5-60 〃 White carbon 0.5-10 〃 Potassium titanate fiber 5-60 〃 Vulcanizing agent and other auxiliary agents Some polyacrylate rubber Although it is broadly classified into basic and epoxy rubber, basic polyacrylate rubber is used in the present invention in order to be mixed with epichlorohydrin rubber. Epichlorohydrin rubber also has oil resistance and heat resistance, and when used in combination with polyacrylate rubber, the workability becomes easier and the cold resistance is improved. The above-mentioned combined effects can be sufficiently exhibited within the blending range of 0.5 to 60 parts by weight of polyacrylate rubber and 0.5 to 40 parts by weight of epichlorohydrin rubber. Although it is common to use carbon black in rubber formulations, a portion of the carbon black can be replaced with white carbon. As the carbon black, it is preferable to use FEF species, HAF species, or a combination thereof. White carbon has the effect of adjusting hardness and reducing costs. Potassium titanate fiber is effective as the ceramic fiber. Potassium titanate fiber has a hardness of 550 to 600 Kg/mm, which ranks second on the micro-Vickers hardness scale, and this is because when used in combination with the above-mentioned polyacrylate rubber and epichlorohydrin rubber, the fiber does not break during mastication during rubber kneading. Also, it is easy to mix, and as a result, it is easy to mix evenly into the rubber elastic body. It goes without saying that some amount of a vulcanizing agent, anti-aging agent, vulcanization accelerator, etc. may be mixed in as a matter of course. The following examples of the present invention are shown. Compounding composition Weight % Basic polyacrylate rubber 45 Epichlorhydrin rubber 5 Carbon black 15 White carbon 5 Potassium titanate fiber 30 Vulcanizing agent Vulcanization accelerator Vulcanization stabilizer Anti-aging agent Small amount Basic polyacrylate rubber and Epiclor After masticating with hydrin rubber at the same time using a rubber kneading roll, carbon black and then white carbon are mixed in. Then, vulcanizing agents, vulcanization accelerators, vulcanization stabilizers, anti-aging agents, etc. are added, and finally titanium Add the acid potassium fiber and mix well. This is made into a predetermined sheet, cut into a predetermined shape, heated and pressurized to shape it into a desired shape, and then bonded to a predetermined metal plate using an adhesive and heated and pressurized again to produce a semi-finished product. Also, apply adhesive to the specified metal plate in advance,
After the above-mentioned kneading, the rubber material cut to a predetermined thickness is pasted together (in some cases, the rubber material may be pasted on both sides of the metal plate), and then heated and pressed to form a semi-finished product. These semi-finished products are then vulcanized at a predetermined temperature for a long period of time to produce products. The performance of the rubber friction material thus obtained in oil was as follows. Test conditions Friction material contact surface 50φ FC-25 Circumferential speed 3m/sec Surface pressure 7.5Kg/cm 2Friction method 10sec Friction 5sec Intermittent friction with rest Oil used Engine oil 120℃ (The entire test product is immersed in oil) [Table]
Claims (1)
エピクロールヒドリンゴム0.5〜40重量部、カー
ボンブラツク及び／又はホワイトカーボン5.5〜
70重量部、セラミツクス繊維５〜60重量部を含ん
でいることを特徴とする湿式摩擦材。 ２ カーボンブラツク５〜60重量部とホワイトカ
ーボン0.5〜10重量部を含んでいる特許請求の範
囲第１項記載の湿式摩擦材。 ３ セラミツクス繊維がチタン酸カリウム繊維で
ある特許請求の範囲第１項又は第２項記載の湿式
摩擦材。[Claims] 1. 0.5 to 60 parts by weight of basic polyacrylate rubber,
0.5-40 parts by weight of epiclorhydrin rubber, 5.5-40 parts by weight of carbon black and/or white carbon
A wet friction material characterized by containing 70 parts by weight and 5 to 60 parts by weight of ceramic fibers. 2. The wet friction material according to claim 1, which contains 5 to 60 parts by weight of carbon black and 0.5 to 10 parts by weight of white carbon. 3. The wet friction material according to claim 1 or 2, wherein the ceramic fibers are potassium titanate fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16034780A JPS5785875A (en) | 1980-11-14 | 1980-11-14 | Wet-process friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16034780A JPS5785875A (en) | 1980-11-14 | 1980-11-14 | Wet-process friction material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5785875A JPS5785875A (en) | 1982-05-28 |
| JPH0125927B2 true JPH0125927B2 (en) | 1989-05-19 |
Family
ID=15713013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16034780A Granted JPS5785875A (en) | 1980-11-14 | 1980-11-14 | Wet-process friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5785875A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58213077A (en) * | 1982-06-03 | 1983-12-10 | Akebono Brake Ind Co Ltd | Wet friction material |
| JPS58215478A (en) * | 1982-06-08 | 1983-12-14 | Akebono Brake Ind Co Ltd | Controlling method of friction coefficient by formulated ingredient |
| JPS6187773A (en) * | 1984-10-04 | 1986-05-06 | Akebono Brake Chuo Gijutsu Kenkyusho:Kk | Friction system |
| JPH066721Y2 (en) * | 1988-11-09 | 1994-02-23 | 住友セメント株式会社 | Shoe sole |
| CN108443378A (en) * | 2018-05-11 | 2018-08-24 | 来安县隆华摩擦材料有限公司 | A kind of production technology of ceramic friction plate |
-
1980
- 1980-11-14 JP JP16034780A patent/JPS5785875A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5785875A (en) | 1982-05-28 |
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