JPS6366230A - Wet friction material and production thereof - Google Patents
Wet friction material and production thereofInfo
- Publication number
- JPS6366230A JPS6366230A JP20947186A JP20947186A JPS6366230A JP S6366230 A JPS6366230 A JP S6366230A JP 20947186 A JP20947186 A JP 20947186A JP 20947186 A JP20947186 A JP 20947186A JP S6366230 A JPS6366230 A JP S6366230A
- Authority
- JP
- Japan
- Prior art keywords
- wet friction
- friction material
- binder
- filler
- foaming agent
- 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.)
- Pending
Links
- 239000002783 friction material Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000011230 binding agent Substances 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims abstract description 12
- 239000004088 foaming agent Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 238000000465 moulding Methods 0.000 claims abstract description 3
- 239000002657 fibrous material Substances 0.000 claims abstract 4
- 239000000835 fiber Substances 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 6
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 239000005995 Aluminium silicate Substances 0.000 abstract description 2
- 235000012211 aluminium silicate Nutrition 0.000 abstract description 2
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- 238000005187 foaming Methods 0.000 abstract description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011490 mineral wool Substances 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 238000007652 sheet-forming process Methods 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- -1 links Polymers 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 244000226021 Anacardium occidentale Species 0.000 description 1
- 239000004156 Azodicarbonamide Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004642 Polyimide 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
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 235000020226 cashew nut Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920003192 poly(bis maleimide) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 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)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、湿式クラッチのフェーシングとして使用され
る湿式摩擦材とその製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wet friction material used as a facing of a wet clutch and a method for manufacturing the same.
例えば自動車、建設機械、農業機械、モーターポートで
原動機から駆動を変速機に伝達するクラッチは、常時は
充分に動力を伝達し、発進時などは適度な滑りを与え、
変速機の変速南１＜の切り科え時には動力を遮断する機
能が要求される。か−る機能を満たすクラッチとして摩
擦クラッチが広く採用されている。そして摩擦クラット
には油液中で使用される湿式クラッチと乾燥状ｍ；で使
用される乾式クラッチとがある。本発明の対象である湿
式クラッチの摩擦材（湿式摩擦材）は、例えば遊星歯車
式の自動変速機内の構成要素として使用されている。湿
式摩擦材の性能、例えば摩擦係数用、摩耗率、耐熱性、
機械強度等は、使われている材料とその混合比率が同一
なら、含まれる気孔の量に依存することが大きい。すな
わち、湿式摩擦材ではその気孔に保持される油が東要な
役割を負っているからであると考えられる。For example, clutches in automobiles, construction machinery, agricultural machinery, and motor ports that transmit drive from the prime mover to the transmission transmit sufficient power at all times, provide appropriate slippage when starting, etc.
A function is required to cut off the power when the transmission is set to shift south 1<. Friction clutches are widely used as clutches that fulfill these functions. There are two types of friction clutches: wet clutches used in oily fluids and dry clutches used in dry conditions. A friction material for a wet clutch (wet friction material), which is the object of the present invention, is used, for example, as a component in a planetary gear type automatic transmission. Performance of wet friction materials, such as friction coefficient, wear rate, heat resistance,
Mechanical strength etc. largely depend on the amount of pores contained, provided the materials used and their mixing ratios are the same. In other words, this is thought to be because the oil retained in the pores of the wet friction material plays an important role.
このような湿式摩擦材は、繊Ｍｔ質に各種フィラーを混
合して抄造装置により抄紙した紙質基材にバインダを含
侵、硬化させ、所定の形状に切抜いて仕上げている。Such wet friction materials are produced by mixing Mt fibers with various fillers and making paper using a papermaking machine, impregnating a paper base material with a binder, curing the paper, and cutting the paper into a predetermined shape.
前記したように湿式摩擦材のｆ１能にとって気孔のｒｌ
ｌは重要なものであるが、上記した従来の湿式摩擦材で
はそれを人為的にコントロールすることが困難である。As mentioned above, the rl of the pores is important for the f1 ability of wet friction materials.
Although l is important, it is difficult to artificially control it in the conventional wet friction materials described above.
気孔の量は、繊維質基材、フィラー、バインダ等容原料
の性質や形状および抄造時の仕込み秤部などの総合によ
り決まるため、経験的に定めた各条件に頼って気孔をコ
ントロールしようどするが、安定した性能のものが得ら
れにくい。The amount of pores is determined by the properties and shape of the raw materials such as the fibrous base material, filler, binder, etc., and the preparation weighing section during papermaking, so attempts are made to control the pores by relying on various conditions determined empirically. However, it is difficult to obtain stable performance.
湿式摩擦材の製造には抄紙工程をはじめ非常に多くの工
程を取り複雑であるとともに抄造装置という犬がかりな
装置を必要とする。また、大きな板状物から所定の形状
の湿式摩擦材に切抜くため、材料歩留りが著しく低く、
無駄がでるという欠点がある。そのため製造コストを低
廉化するのに限界がある。The production of wet friction materials involves a large number of steps, including the papermaking process, and is complex and requires a complicated device called a papermaking device. In addition, the material yield is extremely low because the wet friction material is cut into a predetermined shape from a large plate.
The disadvantage is that it is wasteful. Therefore, there is a limit to reducing manufacturing costs.
本発明は−１−記の問題点を解消しようとするもので、
大がかりな製造装置を必要とすることなく、部用な製造
方法により気孔の量がコントロールされ、安定な摩擦性
能を有する湿式摩擦材を提供するものである。The present invention aims to solve the problem described in -1-,
The present invention provides a wet friction material in which the amount of pores is controlled by a simple manufacturing method without requiring large-scale manufacturing equipment, and has stable friction performance.
〔問題点を解決するための手段〕
上記の問題点を解消するための未発１．！ｌｌの湿式摩
擦材は、少なくともｍ難質と５フイラーとバインダと発
泡剤を含み、全体積に対する気（１，比率が３５〜６５
％である。[Means for solving the problems] Unreleased 1. to solve the above problems. ! ll wet friction material contains at least m poor quality, 5 filler, binder, and foaming agent, and contains air (1, ratio 35 to 65) relative to the total volume.
%.
またこのような湿式摩擦材を製造する方法は、少なくと
もｍ難質とフィラーとバインダと発泡剤とを混合した原
料を型に入れ、加熱して発泡さ廿るとともに成形するも
のである。In addition, the method for manufacturing such a wet friction material is to put a raw material mixed with at least a molar quality, a filler, a binder, and a foaming agent into a mold, heat it, foam it, and shape it.
湿式摩擦材の基材となる繊維は、例えばリンクなどのセ
ルロース繊維、ポリエステル繊維、アクリル系繊維、芳
香族ポリアミド系繊維、ノボ１」イド繊維、カーボン繊
維、ガラス繊維、ヒースミック繊維、チタン耐カリウＬ
１繊維、ボーキ９・イト繊維、マグネシア繊維、ロック
ウール、金属繊維が一種類または複数種類混合して使用
できる。フィラーは、例えばシリカ、タルク、酸化マグ
ネシウム、カオリン、硫酸バリウノ・、生石法、リン酸
カルシウム、ｋＲＭカルシラ１１、ケイソー１゜、カシ
ュータスト、黒鉛、ゴム粉末が使用できる。バインダと
しては、例えば各種変性フェノール樹脂、エポキシ樹脂
、メラミン樹脂、ゴム系バインダ、ポリイミド系バイン
ダ（芳香族系、ビスマレイミド系）、無機バインダ（シ
リカ、ジルコニヤ、アルミナ）が使用できる。発泡剤と
しては、例えばスルフォニルヒドラジッドやアゾジカル
ボンアミドなど加熱型の発泡剤のなか〜から基材繊維等
、他の原料の特性に合わせて選択し使用できる。Fibers that serve as the base material of wet friction materials include, for example, cellulose fibers such as links, polyester fibers, acrylic fibers, aromatic polyamide fibers, Novo 1" fibers, carbon fibers, glass fibers, Heathmick fibers, and titanium-resistant potassium L.
1 fiber, bokeh fiber, magnesia fiber, rock wool, and metal fiber can be used singly or in combination. As fillers, for example, silica, talc, magnesium oxide, kaolin, barium sulfate, raw stone method, calcium phosphate, kRM Calcilla 11, Keiso 1°, cashew tast, graphite, and rubber powder can be used. As the binder, for example, various modified phenolic resins, epoxy resins, melamine resins, rubber binders, polyimide binders (aromatic type, bismaleimide type), and inorganic binders (silica, zirconia, alumina) can be used. The blowing agent can be selected from heat-type blowing agents such as sulfonyl hydrazide and azodicarbonamide depending on the characteristics of the base fiber and other raw materials.
所定の繊維基材、フィラー、バインダおよび発泡剤を添
加し熱硬化時に発泡させ所定形状の摩擦材が得られる。A predetermined fiber base material, filler, binder, and foaming agent are added and foamed during heat curing to obtain a friction material having a predetermined shape.
このとき配合比と加熱条件により気孔がコントロールで
きる。At this time, pores can be controlled by adjusting the blending ratio and heating conditions.
以下、本発明の実施例を詳細に説明する。 Examples of the present invention will be described in detail below.
第１表の実施例１〜実施例３に示す原料配合（重品比）
で、以下のようにして湿式摩擦材を製造する。Raw material composition (heavy product ratio) shown in Examples 1 to 3 in Table 1
A wet friction material is manufactured as follows.
所定の配合比の材料なミキサにより良く混合する。一方
、金型には離型剤を予め塗布しておく。The materials are mixed well using a mixer with a predetermined mixing ratio. Meanwhile, a mold release agent is applied to the mold in advance.
なお、金型は摩擦材の完成・」法に研摩しろを加えた大
きさである。この金型な１４０℃に加熱し、そこに混合
した材料の一定１ｊ）を入れ、５分間温度を保持する。The size of the mold is the size of the finished friction material, plus the polishing allowance. This mold was heated to 140°C, a certain amount of the mixed material 1j) was poured into it, and the temperature was maintained for 5 minutes.
さらに温度を１８０℃まで１−げて２０分間保持する。The temperature is further increased to 180°C and held for 20 minutes.
それにより発泡、成形がなされる。これを取り出し、加
熱してアフタキュアを施し硬化が完了する。冷却後、研
摩、穴明は加にして摩擦材が完成する。This results in foaming and molding. This is taken out, heated and aftercured to complete the curing. After cooling, polishing and drilling are performed to complete the friction material.
第１表の比較例は発泡剤を混入していない湿式摩擦材の
例で、従来の製造方Ｖ、による。すなわち、繊維成分と
フィラーを混合して抄紙した紙質基材にバインダ樹脂を
含浸、硬化させ、所定の形状に切抜いて仕−１−げてい
る。The comparative example in Table 1 is an example of a wet friction material that does not contain a foaming agent, and is manufactured using conventional manufacturing method V. That is, a paper base material made by mixing a fiber component and a filler is impregnated with a binder resin, hardened, and cut into a predetermined shape.
各個の湿式摩擦材を；ｉｆ価するため気孔率をポロシメ
ータ（気孔率測定計）により測定をする。ポロシメータ
による気孔率の測定は、粘性流体中に試料（湿式摩擦材
）を置き加圧して、粘性流体がどれほど浸透するかを測
定するものである。実施例１〜実施例３および比較例に
ついて品々１０試料をつくり気孔率を測定する。その平
均１ｄｊが第１表に併記しである。実施例１〜実施例３
の各試料は、気孔率が平均値から１５％以内にあるのに
対し、比較例の試料は平均値から７％以上離れたものが
あった。The porosity of each wet friction material is measured using a porosimeter (porosity measuring meter) in order to give an IF value. To measure porosity using a porosimeter, a sample (wet friction material) is placed in a viscous fluid, pressurized, and the extent to which the viscous fluid penetrates is measured. Ten samples of each of Examples 1 to 3 and Comparative Examples were prepared and their porosity was measured. The average 1dj is also listed in Table 1. Examples 1 to 3
Each of the samples had a porosity within 15% of the average value, whereas some of the comparative samples had a porosity deviated from the average value by 7% or more.
各実施例および比較例の湿式摩擦材の摩擦係数メＬを測
定しその結果が第１図に示しである。測定ｊよＳＡＥ井
２摩擦試験機により行う。上記各個の湿式摩擦材（内径
＋１０５■、外径＋１２８、厚さ０．４ｍｍ）を金属の
センタプレートを挾んで貼り付けた試験片を使用する。The friction coefficients of the wet friction materials of each Example and Comparative Example were measured, and the results are shown in FIG. Measurements are carried out using an SAE well 2 friction tester. A test piece is used in which each of the above-mentioned wet friction materials (inner diameter +105 mm, outer diameter +128 cm, thickness 0.4 mm) is pasted with a metal center plate sandwiched therebetween.
慣性回転している摩擦材の試験片に荷重をかけ、そのト
ルクから摩擦係数を算出する。A load is applied to a friction material test piece that is rotating due to inertia, and the friction coefficient is calculated from the torque.
測定条件
摩擦面数＝４、イナーシャ： ２．５Ｋｇ−ａｍ−ｓｅ
ｃ２、回転数： ３ＢＯＯｒｐｍ 、荷重： ３３０Ｋ
ｇ、油液中、油温度：１２０℃
同図に示す摩擦係数には１００〜２０００サイクルのと
きの値であり、このサイクルの間、摩擦係数は略安定し
ている。Measurement conditions Number of friction surfaces = 4, inertia: 2.5Kg-am-se
c2, rotation speed: 3BOOrpm, load: 330K
g, in oil liquid, oil temperature: 120° C. The friction coefficient shown in the figure is the value at 100 to 2000 cycles, and the friction coefficient is approximately stable during this cycle.
第 １ 表（原料重量比）
攻フェノール樹脂には同ｂ１のメタノールを混合してお
き、秤量時にはこの倍星な７ｉｊる。Table 1 (raw material weight ratio) Mix phenolic resin with methanol of the same b1, and when weighing, double the amount of methanol.
（以下余白）
〔発明の効果〕
以−１−説明したように本発明の湿式摩擦材は、気孔率
を容易にコントロールでき、それが安定しているので、
安定な摩擦性能を有する湿式摩擦材になる。(The following is a blank space) [Effects of the Invention] As explained below in 1-1, the wet friction material of the present invention can easily control the porosity and is stable.
It becomes a wet friction material with stable friction performance.
本発明の製造方法によれば抄紙工程がないので、抄造装
置が不要で小規模な製造装置でも製造が可能となる。ま
た簡易に製造ができるうえ材料歩留りが良い。したがっ
て極めて安価に製造できるようになる。According to the manufacturing method of the present invention, there is no paper-making process, so a paper-making device is not required, and manufacturing can be performed even with a small-scale manufacturing device. Moreover, it is easy to manufacture and has a good material yield. Therefore, it can be manufactured at extremely low cost.
ｔ５１図は湿式摩擦材の摩擦係数の測定の結果を示す図
である。
第１図
μ 軸係数計９′″Figure t51 is a diagram showing the results of measuring the friction coefficient of the wet friction material. Figure 1 μ axis coefficient meter 9'''
Claims (1)
含み、全体積に対する気孔比率が３５〜６５％であるこ
とを特徴とする湿式摩擦材。 ２、少なくとも繊維質とフィラーとバインダと発泡剤と
を混合した原料を型に入れ、加熱して発泡させるととも
に成形することを特徴とする湿式摩擦材の製造方法。[Scope of Claims] 1. A wet friction material containing at least fibers, a filler, a binder, and a foaming agent, and having a pore ratio of 35 to 65% relative to the total volume. 2. A method for producing a wet friction material, which comprises placing a raw material mixture of at least fibrous material, filler, binder, and foaming agent into a mold, heating it to foam it, and molding it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20947186A JPS6366230A (en) | 1986-09-08 | 1986-09-08 | Wet friction material and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20947186A JPS6366230A (en) | 1986-09-08 | 1986-09-08 | Wet friction material and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6366230A true JPS6366230A (en) | 1988-03-24 |
Family
ID=16573406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20947186A Pending JPS6366230A (en) | 1986-09-08 | 1986-09-08 | Wet friction material and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6366230A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02189343A (en) * | 1989-01-18 | 1990-07-25 | Showa Highpolymer Co Ltd | Friction material comprising phenolic resin foam |
| JPH03140334A (en) * | 1989-10-26 | 1991-06-14 | Showa Highpolymer Co Ltd | Wet friction material |
| WO2006116474A2 (en) | 2005-04-26 | 2006-11-02 | Borgwarner Inc. | Friction material |
| EP2071209A1 (en) * | 2007-12-12 | 2009-06-17 | HOERBIGER Antriebstechnik GmbH | Non-metallic friction lining |
| US7749562B1 (en) | 2004-07-26 | 2010-07-06 | Borgwarner Inc. | Porous friction material comprising nanoparticles of friction modifying material |
| US8021744B2 (en) | 2004-06-18 | 2011-09-20 | Borgwarner Inc. | Fully fibrous structure friction material |
| US8397889B2 (en) | 2008-03-12 | 2013-03-19 | Borgwarner Inc. | Frictional device comprising at least one friction plate |
-
1986
- 1986-09-08 JP JP20947186A patent/JPS6366230A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02189343A (en) * | 1989-01-18 | 1990-07-25 | Showa Highpolymer Co Ltd | Friction material comprising phenolic resin foam |
| JPH03140334A (en) * | 1989-10-26 | 1991-06-14 | Showa Highpolymer Co Ltd | Wet friction material |
| US8021744B2 (en) | 2004-06-18 | 2011-09-20 | Borgwarner Inc. | Fully fibrous structure friction material |
| US7749562B1 (en) | 2004-07-26 | 2010-07-06 | Borgwarner Inc. | Porous friction material comprising nanoparticles of friction modifying material |
| WO2006116474A2 (en) | 2005-04-26 | 2006-11-02 | Borgwarner Inc. | Friction material |
| EP1874850A4 (en) * | 2005-04-26 | 2008-06-18 | Borgwarner Inc | Friction material |
| EP2071209A1 (en) * | 2007-12-12 | 2009-06-17 | HOERBIGER Antriebstechnik GmbH | Non-metallic friction lining |
| US8397889B2 (en) | 2008-03-12 | 2013-03-19 | Borgwarner Inc. | Frictional device comprising at least one friction plate |
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