JPS6020988A - Non-asbestos friction material and its preparation - Google Patents
Non-asbestos friction material and its preparationInfo
- Publication number
- JPS6020988A JPS6020988A JP12773283A JP12773283A JPS6020988A JP S6020988 A JPS6020988 A JP S6020988A JP 12773283 A JP12773283 A JP 12773283A JP 12773283 A JP12773283 A JP 12773283A JP S6020988 A JPS6020988 A JP S6020988A
- Authority
- JP
- Japan
- Prior art keywords
- friction material
- added
- fiber
- fibers
- binder
- 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 20
- 239000010425 asbestos Substances 0.000 title claims abstract description 16
- 229910052895 riebeckite Inorganic materials 0.000 title claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 29
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 8
- 239000004917 carbon fiber Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 150000003839 salts Chemical class 0.000 claims abstract description 7
- 239000004760 aramid Substances 0.000 claims abstract description 6
- 229920003235 aromatic polyamide Polymers 0.000 claims abstract description 6
- 239000000839 emulsion Substances 0.000 claims abstract description 6
- 229920006174 synthetic rubber latex Polymers 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 238000003786 synthesis reaction Methods 0.000 claims 1
- 238000002156 mixing Methods 0.000 abstract description 4
- 229920003987 resole Polymers 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011490 mineral wool Substances 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 229920003986 novolac Polymers 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 6
- 239000005060 rubber Substances 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 229920000126 latex Polymers 0.000 description 4
- 239000004816 latex Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 238000007580 dry-mixing Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 206010061592 cardiac fibrillation Diseases 0.000 description 2
- 230000002600 fibrillogenic effect Effects 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 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
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- 229910001864 baryta Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010680 novolac-type phenolic resin Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- 238000009941 weaving Methods 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】
技術分野
本発明は、非アスベスト摩擦材およびその製法に関する
。DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to non-asbestos friction materials and methods of making the same.
従来技術
従来、アスベストを用いた摩擦材が広く用いられている
。例えば、アスベスト繊維をリデンに織布し、樹脂もし
くはゴムを含浸し、成形してなる摩擦材がある。しかし
、かかる材料への樹脂もしくはゴムの含浸は極めて困峻
であシ、飽和させることができないという欠点がある。Prior Art Conventionally, friction materials using asbestos have been widely used. For example, there is a friction material made by weaving asbestos fibers into reddened fabric, impregnating it with resin or rubber, and molding it. However, impregnation of such materials with resin or rubber is extremely difficult and has the disadvantage that they cannot be saturated.
また、含浸時に有機溶剤を用いなければならず、そのた
め人体に有害でありたシ、発火の危険が伴ったシする。Furthermore, an organic solvent must be used during impregnation, which is harmful to the human body and poses a risk of ignition.
また、アスベスト繊維と充填材とをドライ混合し、これ
を成形してなる摩擦材も知られているが、しかしドライ
混合時に粉塵が発生するために、局部排気装置を必狭と
し、そのためコスト高となる欠点があり、また術生的に
も間馳がある。更に、ドライ混合では均一な混合を行い
にくいという問題もある。Friction materials made by dry mixing asbestos fibers and fillers and molding this material are also known, but since dust is generated during dry mixing, local exhaust equipment must be narrowed, resulting in high costs. There are drawbacks such as this, and there are also some shortcomings in terms of technique. Furthermore, dry mixing has the problem that it is difficult to achieve uniform mixing.
Ｌ厘＋ｏｇ＋回
本発明の目的は、アスベストヲ含まず、性能に優れた摩
擦材を提供することにある。An object of the present invention is to provide a friction material that does not contain asbestos and has excellent performance.
本発明の他の目的は、上記の如き問題を生ずることなく
、効率的に摩擦材を製造することのできる方法を提供す
ることにある。Another object of the present invention is to provide a method that can efficiently produce a friction material without causing the above-mentioned problems.
１里Ω番處
本発明によれば非アスベスト摩擦材が提供されるのであ
って、この摩擦材は、基材繊維として炭素短繊維と芳香
族ポリアミド短繊維との混合物を含み、前記基材繊維を
充填材とおよびノボシック型の粉末樹脂、レゾール型の
液状樹脂および合成ゴムラテックスからなる結合剤と混
合後加熱加圧してなるものである。According to the present invention, a non-asbestos friction material is provided, which includes a mixture of short carbon fibers and short aromatic polyamide fibers as base fibers, is mixed with a filler and a binder consisting of a Novosic type powdered resin, a resol type liquid resin, and a synthetic rubber latex, and then heated and pressed.
本発明に係るこの非アスベスト摩擦材は次の如き方法に
よシ製造することができる。即ち、炭素短繊維と芳香族
ポリアミド短繊維との混合物を水中において解繊してス
ラリーとし、これに充填材を水性ディス・や−ジョンと
して添加し、次にノポラ、り型の粉末樹脂・レゾール型
の液状樹脂および合成ゴムラテックスからなる結合剤を
含む水性エマルジョンを添加し、次に金属塩を添加して
前記結合剤を前記基材繊維に定着させた後、所望形状に
成形し、加熱加圧することを９：「徴とする非アスベス
ト摩擦材の製造方法である。This non-asbestos friction material according to the present invention can be manufactured by the following method. That is, a mixture of short carbon fibers and short aromatic polyamide fibers is defibrated in water to form a slurry, a filler is added as an aqueous dispersion, and then a Nopola-type powdered resin/resol is added. An aqueous emulsion containing a binder made of a mold liquid resin and synthetic rubber latex is added, and then a metal salt is added to fix the binder to the base fiber, which is then molded into a desired shape and heated. 9: This is a method for producing a non-asbestos friction material that is characterized by pressure.
発明の構成の具体的説明
以下、本発明をその好ましい態様に従って更に説明する
。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION The present invention will be further described below according to its preferred embodiments.
炭素繊維は、耐熱性、摺動Ｑ”ａ性、耐蝕性、寸法安定
性、高剛性、高弾性、摩耗性等に非常に優れておシ、そ
の上軽量（かさ比重が小）である。更に、アスベストの
１／１０強の使用量で同水準の補強効果を得ることがで
きる。一方、芳香族ポリアミド繊維は、耐摩耗性、軽量
、耐熱性、接触金属面への非研摩作用、操作温度での安
定した）？ｆｉ擦係数等の、摩擦材の基材繊維としての
優れた特性を備えている。特に、ケプラーパルｆ（デュ
ポン・ファーイースト社間品名）は８〜１０ｍ２７ｆｉ
の大きい表面私を有している。Carbon fiber has excellent heat resistance, sliding Q''a properties, corrosion resistance, dimensional stability, high rigidity, high elasticity, abrasion resistance, etc., and is also lightweight (low bulk specific gravity). Furthermore, the same level of reinforcing effect can be obtained with just over 1/10 the amount of asbestos used.On the other hand, aromatic polyamide fibers have excellent wear resistance, light weight, heat resistance, non-abrasive action on contact metal surfaces, and easy handling. It has excellent properties as a base material fiber for friction materials, such as a stable coefficient of friction (at various temperatures).In particular, Kepler Pal F (Dupont Far East intercompany product name)
I have a big surface.
本発明においては、これらの繊維からなる短繊維を理容
して用いるが、混合物中には炭素繊維が１０〜３０重量
−の量で存在するのが好ましい。In the present invention, short fibers made of these fibers are used by cutting, and carbon fibers are preferably present in the mixture in an amount of 10 to 30% by weight.
かかる繊維混合物を解繊槽（もしくは解綿槽）に水を満
たした後投入し、繊維の対流、拡散にょ９、繊維相互間
の衝撃によるフィブリル化を促進して繊維の表面積を増
大せしめる。このときの解繊濃度は４〜５俤であるのが
好ましい。The fiber mixture is poured into a defibration tank (or defibration tank) after being filled with water to promote fibrillation due to fiber convection, diffusion 9, and impact between fibers, thereby increasing the surface area of the fibers. It is preferable that the defibration concentration at this time is 4 to 5 yen.
次に、上記繊維スラリーに充填材の水性ディスフ４−ジ
ョンを添加し、十分攪拌混合する。充填材としては、珪
素やチタンの化合物、各種ゴム用充填材、バライタ、ク
レー等の各種充填材を用いることができるが、特に比重
が小さく、耐熱性、断熱性及び不燃吸音性を有するロッ
クウールと、焼鈍番行った金属銅粉末、炭酸カルシウム
及び黒鉛を用いるのが好ましい。Next, an aqueous diffusion filler is added to the fiber slurry and thoroughly stirred and mixed. As the filler, various fillers such as silicon and titanium compounds, various rubber fillers, baryta, clay, etc. can be used, but rock wool, which has a low specific gravity, heat resistance, heat insulation, and non-combustible sound absorption properties, can be used. It is preferable to use metallic copper powder, calcium carbonate, and graphite that have been annealed.
次いで、耐熱性及び耐摩耗性を有するフェノール樹脂で
ある、ノボラック型の粉末樹脂とレゾール型の液状樹脂
と合成ゴムラテックスからなる結合剤を水性エマルジョ
ンとして添加する。このとき、エマルジョンは１ｏチ以
下の固形分含、量を有するのが好ましい。合成ゴムラテ
ックスとしては、アクリロニトリルシタジエンゴム（Ｎ
ＢＲ）ラテックス、スチレンツタジエンゴム（ＳＤＲ）
ラテックス、クロロゾレンゴム（ＣＲ）ラテックス等ヲ
用いることができる。Next, a binder consisting of a novolac-type powdered resin, a resol-type liquid resin, and a synthetic rubber latex, which are phenolic resins having heat resistance and wear resistance, is added as an aqueous emulsion. At this time, the emulsion preferably has a solid content of 10% or less. As synthetic rubber latex, acrylonitrile sitadiene rubber (N
BR) Latex, styrene tadiene rubber (SDR)
Latex, chlorozolene rubber (CR) latex, etc. can be used.
得られるスラリーを十分攪拌混合した後、金属塩を添加
して、結合剤を基材繊維に完全に定着させる。このとき
、−価金属の塩、次いで二価金属の塩、そして二価金属
の塩を順次に添加してもよい。得られるスラリー濃度い
て、次いで所望形状に成形する。成形は、好ましくは、
抄造技術にょシ行うことができる。即ち、スラリーを所
望形状に抄き拡げ、自然濾過によシ脱水する。このとき
、スラリー濃度は０．０５〜１チであるのが好ましい。After thoroughly stirring and mixing the resulting slurry, a metal salt is added to completely fix the binder to the base fibers. At this time, a -valent metal salt, then a divalent metal salt, and then a divalent metal salt may be sequentially added. The resulting slurry is then shaped into the desired shape. The shaping is preferably
Paper making technology can be used. That is, the slurry is spread into a desired shape and dehydrated by natural filtration. At this time, it is preferable that the slurry concentration is 0.05 to 1.
しかる後、得られた湿抄造物を脱水して、好ましくは含
水量を１０％以下とした後乾燥し、次いで加熱加圧を行
って結合剤の架橋と製品の密度の向上を図シ、所望の非
アスベスト摩擦材を得る。After that, the obtained wet paper product is dehydrated to preferably have a water content of 10% or less, and then dried, and then heated and pressurized to crosslink the binder and improve the density of the product as desired. of non-asbestos friction material.
このようにして得られる本発明の摩擦材は、比重が小さ
く、摩擦材として其備すべき要件を満たすことができる
。また、本発明の摩擦材は、優れた耐水性を有し、水に
よる弊害全防止することができる。The friction material of the present invention obtained in this manner has a low specific gravity and can satisfy the requirements for a friction material. Further, the friction material of the present invention has excellent water resistance and can completely prevent any harmful effects caused by water.
実施例
２０重量％の炭素短繊維（繊維長２〜４ ｍ ）と８０
重量％のケプラーパルプとからなる基材繊維３０１ψを
７５０１の水を満たした解繊槽に投入し、攪拌をして対
流拡散せしめて、表面積大なる繊維のスラリーとした（
スラリー濃度４チ）。次に、このスラリーにロックウー
ル４０重量係、銅粉末１５重量％、炭酸カルシウム３０
重量％及びアルミナ粉末１５重量％からなる充填剤４５
′Ｋｇを界面活性剤を用いて水中のディスノ！−ジョン
としたもの（固形分濃度１０チ）を添加し、十分に攪拌
して、均一に混合せしめた。Example 20% by weight of short carbon fibers (fiber length 2-4 m) and 80% by weight
A base fiber of 301ψ consisting of Kepler pulp (wt%) was put into a fibrillation tank filled with 7501 water and stirred for convection diffusion to form a slurry of fibers with a large surface area (
Slurry concentration 4ch). Next, add 40% by weight of rock wool, 15% by weight of copper powder, and 30% by weight of calcium carbonate to this slurry.
Filler 45 consisting of % by weight and 15% by weight of alumina powder
'Kg underwater using a surfactant! - John (solid content concentration: 10 cm) was added and thoroughly stirred to mix uniformly.
次に、ノボラック型フェノール樹脂粉末３０重量％、レ
ゾール型液状フェノール樹脂３０重量％、ＮＢＲラテッ
クス４０重量係からなる結合剤２５ ｋｇを含む水性エ
マルジョン（固形分濃度１０％）全添加して、均一に混
合した。十分な混合後、硫酸バンドを誕約１０％として
攪拌しながら添加し、攪拌を続けた。Ｐ液が無色透明と
なることを目安として反応の終了とした。次に、水で稀
釈してスラリー濃度を０．５％に調整し、所定形状の抄
造器を用いて抄造した。Next, an aqueous emulsion (solid content concentration 10%) containing 25 kg of a binder consisting of 30% by weight of novolac type phenolic resin powder, 30% by weight of resol type liquid phenolic resin, and 40% by weight of NBR latex was added in its entirety and uniformly added. Mixed. After thorough mixing, sulfuric acid was added at about 10% with stirring, and stirring was continued. The reaction was determined to have ended when the P solution became colorless and transparent. Next, the slurry was diluted with water to adjust the slurry concentration to 0.5%, and paper-made using a paper-making machine of a predetermined shape.
抄造後の湿抄造物を、荷重を徐々に上げて脱水して、含
水祉を１０係とした。次いで、脱水した抄造物を加熱ロ
ーラー対を用い、温度１４０℃、圧力２００〜３００ｋ
ｇ／ｃｎ１２において、１５〜２０分間加熱加圧して、
所望の摩擦材を得た。The wet paper product after papermaking was dehydrated by gradually increasing the load, and the water content was adjusted to 10 parts. Next, the dehydrated paper product is heated at a temperature of 140°C and a pressure of 200 to 300k using a pair of heating rollers.
Heat and pressurize at g/cn12 for 15 to 20 minutes,
A desired friction material was obtained.
特許出願人 伊藤忠商事株式会社 ユニカ株式会社 北 村 藤 − 特許出願代理人 弁理士 青 木 朗 弁理士 西 舘 和 之 弁理士 吉 １） 維 夫 弁理士 山 口 昭 之 −６１′patent applicant ITOCHU Corporation Unica Co., Ltd. Kitamura Fuji − patent application agent Patent Attorney Akira Aoki Patent attorney Kazuyuki Nishidate Patent Attorney Yoshi 1) Yoshio Patent attorney Akira Yamaguchi -61'
Claims (1)
維との混合物を含み、前記基材繊維を充填材とおよびノ
？う、り型あ粉末樹脂、レゾール型の液状樹脂および合
成ゴムラテックスからなる結合剤と混合後加熱加圧して
なる非アスベスト摩擦材。 ２、炭素短繊維と芳香族ポリアミド短繊維との混合物を
水中において解絨してスラリーとし、これに充填材を水
性ディスパージョンとして添加し、次にノボラック型の
粉末樹脂、レゾール型の液状樹脂および合成がムラテッ
クスからなる結合剤を含む水性エマルジョンを添加し、
次に金属塩′！！−添加して前記結合剤を前記基材繊維
に定着させた後、所望形状に成形し、加熱加圧すること
を％徴とする非アスベスト摩擦材の製造方法。[Claims] 1. The base fiber contains a mixture of short carbon fibers and short aromatic polyamide fibers, and the base fiber is combined with a filler and a filler. A non-asbestos friction material made by heating and pressurizing the mixture with a binder consisting of Ri-type powdered resin, resol-type liquid resin, and synthetic rubber latex. 2. A mixture of carbon short fibers and aromatic polyamide short fibers is defrosted in water to form a slurry, a filler is added as an aqueous dispersion, and then a novolac-type powder resin, a resol-type liquid resin, and Synthesis adds an aqueous emulsion containing a binder consisting of Muratex,
Next is metal salt′! ! - A method for manufacturing a non-asbestos friction material, which comprises adding and fixing the binder to the base fibers, molding into a desired shape, and heating and pressurizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12773283A JPS6020988A (en) | 1983-07-15 | 1983-07-15 | Non-asbestos friction material and its preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12773283A JPS6020988A (en) | 1983-07-15 | 1983-07-15 | Non-asbestos friction material and its preparation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6020988A true JPS6020988A (en) | 1985-02-02 |
Family
ID=14967317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12773283A Pending JPS6020988A (en) | 1983-07-15 | 1983-07-15 | Non-asbestos friction material and its preparation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6020988A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61278586A (en) * | 1985-06-03 | 1986-12-09 | Nippon Valqua Ind Ltd | Extrudable friction material |
| JPH06229434A (en) * | 1993-01-29 | 1994-08-16 | Aisin Chem Co Ltd | Wet type friction material |
| JP2008222897A (en) * | 2007-03-14 | 2008-09-25 | Sumitomo Bakelite Co Ltd | Phenol resin composition for friction material |
-
1983
- 1983-07-15 JP JP12773283A patent/JPS6020988A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61278586A (en) * | 1985-06-03 | 1986-12-09 | Nippon Valqua Ind Ltd | Extrudable friction material |
| JPH0533277B2 (en) * | 1985-06-03 | 1993-05-19 | Nihon Valqua Kogyo Kk | |
| JPH06229434A (en) * | 1993-01-29 | 1994-08-16 | Aisin Chem Co Ltd | Wet type friction material |
| JP2008222897A (en) * | 2007-03-14 | 2008-09-25 | Sumitomo Bakelite Co Ltd | Phenol resin composition for friction material |
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