JPH0288643A - Production of non-asbestos frictional material - Google Patents
Production of non-asbestos frictional materialInfo
- Publication number
- JPH0288643A JPH0288643A JP23993988A JP23993988A JPH0288643A JP H0288643 A JPH0288643 A JP H0288643A JP 23993988 A JP23993988 A JP 23993988A JP 23993988 A JP23993988 A JP 23993988A JP H0288643 A JPH0288643 A JP H0288643A
- Authority
- JP
- Japan
- Prior art keywords
- friction
- asbestos
- gypsum
- base material
- sliding surface
- 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
- 239000000463 material Substances 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000010425 asbestos Substances 0.000 title abstract description 5
- 229910052895 riebeckite Inorganic materials 0.000 title abstract description 5
- 239000010440 gypsum Substances 0.000 claims abstract description 9
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 5
- 239000000725 suspension Substances 0.000 claims abstract description 5
- 239000002783 friction material Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 5
- 239000002585 base Substances 0.000 description 17
- 239000000835 fiber Substances 0.000 description 11
- 239000000843 powder Substances 0.000 description 10
- 239000004575 stone Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000007799 cork Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 229920000877 Melamine resin Polymers 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 244000226021 Anacardium occidentale Species 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 229920003235 aromatic polyamide Polymers 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
- 239000010951 brass Substances 0.000 description 2
- 235000020226 cashew nut Nutrition 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000007974 melamines Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 2
- 229910021489 α-quartz Inorganic materials 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 244000247747 Coptis groenlandica Species 0.000 description 1
- 235000002991 Coptis groenlandica Nutrition 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920006282 Phenolic fiber Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012458 free base Substances 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
- 239000012784 inorganic fiber Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
【発明の詳細な説明】
［ａ業上の利用分野］
本発明は、自動車などのクラッチフェーシングの摩擦材
の製造方法に関する。さらに詳しくは初期摩擦係数を向
上させた無石綿紐基材の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application in Industry] The present invention relates to a method for manufacturing a friction material for clutch facings of automobiles and the like. More specifically, the present invention relates to a method for manufacturing an asbestos-free string base material with improved initial friction coefficient.
［従来の技術］
自動車などのクラッチフェーシングの摩擦材は、従来石
綿が主な基材として用いられてきたが、作業環境の改善
や公害防止のため無石綿の摩擦材が研究されている。し
かしながら、無石綿紐を主な基材とした摩擦材の場合は
、石綿基材の摩擦材に比べ初期摩擦係数が低いという問
題点がある。[Prior Art] Conventionally, asbestos has been used as the main base material for friction materials for clutch facings of automobiles, etc., but asbestos-free friction materials are being researched to improve the working environment and prevent pollution. However, in the case of a friction material mainly made of asbestos-free string, there is a problem in that the initial coefficient of friction is lower than that of a friction material made of asbestos-based material.
従来摩擦材の初期摩擦係数を向上させるために摩擦材の
摺動面に種々の処理を行うことが提案されている。例え
ば特開昭５０−１８８４５号公報には、摩擦材の表面に
ゴム系あるいはフェノール系の接着剤を薄く塗布した上
にコルク等の弾性体を付着させた摩擦材の開示がある。Conventionally, it has been proposed to perform various treatments on the sliding surface of a friction material in order to improve the initial coefficient of friction of the friction material. For example, Japanese Patent Application Laid-Open No. 18845/1984 discloses a friction material in which a rubber or phenol adhesive is thinly applied to the surface of the friction material and an elastic body such as cork is attached thereto.
特開昭５１−１４４４４２号公報には、α−石英や硅酸
ジルコニウムなどの研磨材を含有する熱硬化性樹脂層を
有する摩擦材の開示がある。JP-A-51-144442 discloses a friction material having a thermosetting resin layer containing an abrasive such as α-quartz or zirconium silicate.
さらに特開昭６１−１０３０２２号公報には亜鉛、アル
ミニウムなどの金属層を形成し、表面粗さを４０μｍ以
下とした摩擦材の開示がある。Further, JP-A-61-103022 discloses a friction material in which a metal layer of zinc, aluminum or the like is formed and the surface roughness is 40 μm or less.
［発明が解決しようとする問題点コ
上記の摩擦材の表面に接着剤を塗布した上にコルク等の
弾性体を圧着させる方法は、コルクが脱落しやすく、摩
擦の初期の段階でコルクの多くが無くなるという問題点
がある。またα−石英や珪酸ジルコニウムなどの研磨材
を含有する熱硬化性樹脂層を有する摩擦材は摺動時相子
材に損傷を与えるという問題点がある。さらに金属層を
溶射する方法はコスト高となるという問題点がある。[Problems to be solved by the invention] The above method of applying an adhesive to the surface of the friction material and then crimping an elastic body such as cork causes the cork to easily fall off, and in the initial stage of friction, much of the cork is removed. There is a problem in that it disappears. Furthermore, a friction material having a thermosetting resin layer containing an abrasive such as α-quartz or zirconium silicate has the problem of damaging the phase element material during sliding. Furthermore, the method of spraying the metal layer has the problem of high cost.
［問題点を解決するための手段］
本発明の目的は、上記の問題点を解決し、初期摩擦係数
の高い無石綿紐基材の製造方法を提供するものである。[Means for Solving the Problems] An object of the present invention is to solve the above problems and provide a method for manufacturing an asbestos-free string base material having a high initial coefficient of friction.
すなわち、本発明の第１の発明は、無石綿紐基材を熱硬
化性樹脂に含浸、乾燥させたのち、成形、硬化させた摩
擦部材の摺動面に粒径が０．５μｍ〜１０μｍの石ロウ
粉体を擦り込むことを特徴とする無石綿紐基材の製造方
法である。That is, the first aspect of the present invention is to impregnate an asbestos-free string base material with a thermosetting resin, dry it, mold it, and then harden it. This is a method for producing an asbestos-free string base material, which is characterized by rubbing stone wax powder into it.
第２の発明は、上記摩擦部材の摺動面に石コウの懸濁液
を塗布し、乾燥させることを特徴とする無石綿紐基材の
製造方法である。A second invention is a method for producing an asbestos-free string base material, characterized in that a suspension of gypsum is applied to the sliding surface of the friction member and dried.
本発明の無石綿紐基材の繊維成分としては、ガラス繊維
、岩石繊維、セラミック繊維、カーボン繊維などの無機
繊維、芳香族ポリアミド繊維、レヨン繊維、フェノール
繊維等の有機繊維および真ちゅう線、銅線、アルミニウ
ム線などの金属線の一種または複数種が用いられる。The fiber components of the asbestos-free string base material of the present invention include inorganic fibers such as glass fibers, rock fibers, ceramic fibers, and carbon fibers, organic fibers such as aromatic polyamide fibers, rayon fibers, and phenolic fibers, and brass wires and copper wires. , one or more types of metal wires such as aluminum wires are used.
本発明の無石綿基材には繊維成分のばか摩擦調整剤とし
てカシューダスト、シリカ粉、硫酸バリウム、炭酸カル
シウム、タルク、二硫化モリブデンなどが混入されてい
る。The asbestos-free base material of the present invention contains cashew dust, silica powder, barium sulfate, calcium carbonate, talc, molybdenum disulfide, and the like as fiber component friction modifiers.
本発明の熱硬化性樹脂としては、フェノール樹脂、変性
（メラミン変性、オイル変性、カシュ変性など）フェノ
ール樹脂、エポキシ樹脂、メラミン樹脂、フェノール変
性メラミン樹脂などが用いられる。As the thermosetting resin of the present invention, phenol resins, modified (melamine-modified, oil-modified, cashew-modified, etc.) phenol resins, epoxy resins, melamine resins, phenol-modified melamine resins, etc. are used.
本発明の摩擦部材を得るには例えば以下のようにする。For example, the friction member of the present invention can be obtained as follows.
先づ１種または２種以上の短繊維を均一に混合し、摩擦
調整剤を混入しながらスライバーとする。スライバー、
長繊維および金属線を単独または種々の組合せをして、
撚りをかけて単糸とする。さらに単糸２〜５木を撚り合
せをして合糸紐とする。次に金糸紐に熱硬化性樹脂溶液
を含浸させる。乾燥させた後円盤状に巻き取り１５０℃
〜１８０℃、面圧１００ Ｋｇ／ｃｍ２〜１５０ Ｋｇ
／ｃｍ２で加熱加圧成形し硬化させる。ついで１８０℃
〜２３０℃Ｘ５ｈｒｓ〜８ｈｒｓ熱処理し、研磨して摩
擦部材を得る。First, one or more types of short fibers are uniformly mixed, and a friction modifier is mixed thereinto to form a sliver. sliver,
Using long fibers and metal wires alone or in various combinations,
Twist to make a single yarn. Furthermore, 2 to 5 pieces of single yarn are twisted together to form a doubled string. Next, the gold thread string is impregnated with a thermosetting resin solution. After drying, roll up into a disk at 150℃.
~180℃, surface pressure 100 Kg/cm2 ~ 150 Kg
/cm2 and harden by heating and pressure molding. Then 180℃
A friction member is obtained by heat treatment at ~230° C. for 5 hours to 8 hours and polishing.
第１の発明の無石綿紐基材の製造方法は、以上のように
して得られた摩擦部材の摺動面に所定量の石ロウ粉体を
供給し、回転プレート、ローラ等で弁柄粉体を摺動面の
凹部に擦り込み、初期摩擦係数の高い無石綿紐基材を得
る。The method for manufacturing an asbestos-free string base material according to the first invention is to supply a predetermined amount of stone wax powder to the sliding surface of the friction member obtained as described above, and then use a rotating plate, a roller, etc. to produce Bengara powder. Rub the body into the recesses of the sliding surface to obtain an asbestos-free string base material with a high initial coefficient of friction.
第２の発明の無石綿紐基材の製造方法は、石ロウ粉体を
水、メタノール、またはエタノール等に分散させた表面
処理液をあらかじめ作っておく。この配合比率は石コウ
４０重量部〜８０重量部、溶剤６０重量部〜２０重量部
が好ましい比率である。この表面処理液をスプレーまた
はへヶ等で摩擦部材の摺動面に塗布し、乾燥させ、初期
摩擦係数の高い無石綿紐基材を得る。In the method for manufacturing an asbestos-free string base material according to the second aspect of the invention, a surface treatment liquid in which masonry wax powder is dispersed in water, methanol, ethanol, or the like is prepared in advance. The preferred blending ratio is 40 parts by weight to 80 parts by weight of the plaster and 60 parts by weight to 20 parts by weight of the solvent. This surface treatment liquid is applied to the sliding surface of the friction member by spraying or spacing, and dried to obtain an asbestos-free string base material with a high initial coefficient of friction.
上記第１、第２の発明とも、石ロウ粉体の粒径は０．５
μｍ〜１０μｍであり、その配合割合は、摩擦材摺動面
の面積に対して０．３ｇ／１６０ｃｍ２〜１ 、 ５
ｇ／ｌ ６０ｃｍ２が好ましい。In both the first and second inventions, the particle size of the stone wax powder is 0.5.
μm to 10 μm, and the blending ratio is 0.3 g/160 cm2 to 1,5 to the area of the friction material sliding surface.
g/l 60 cm2 is preferred.
石ロウ粉体の粒径が１０μｍを超えると、脱落し易く、
摩耗が促進されるため好ましくなく、０゜５μｍ未満の
場合は初期摩擦係数を上げる効果が少ないため好ましく
ない。If the particle size of the stone wax powder exceeds 10 μm, it will easily fall off.
This is not preferable because wear is accelerated, and if it is less than 0.5 μm, it is not preferable because the effect of increasing the initial coefficient of friction is small.
［発明の作用および効果］
本発明の無石綿紐基材の製造方法は、無石綿紐基材、熱
硬化性樹脂からなる摩擦部材に石ロウ粉体を擦り込むこ
と、また石ロウ粉体を含有する懸濁液を塗布、乾燥させ
ることを特徴とする。[Operations and Effects of the Invention] The method for manufacturing an asbestos-free string base material of the present invention includes rubbing stone wax powder into a friction member made of an asbestos-free string base material and a thermosetting resin; It is characterized by applying a suspension containing the liquid and drying it.
この０．５μｍ〜１０μｍの石ロウ粉体を摩擦材の摺動
面に付着させることにより、石コウのアブレシブ効果に
より摩擦係数を向上させる。By attaching this 0.5 μm to 10 μm masonry wax powder to the sliding surface of the friction material, the coefficient of friction is improved by the abrasive effect of the plaster.
また摩擦材表面の空隙に石コウが目づまりをおこし、そ
のため摩擦材表面の当り性がよく、摩擦係数が向上され
る。以上の作用により、本発明の方法により得られた摩
擦材は初期摩擦係数が高くなリ、安定期の摩擦係数と近
い値となる。Furthermore, the gypsum clogs the voids on the surface of the friction material, resulting in good contact with the surface of the friction material and an improvement in the coefficient of friction. Due to the above-mentioned effects, the friction material obtained by the method of the present invention has a high initial friction coefficient, which is close to the stable period friction coefficient.
さらに本発明の方法は、無機物である石ロウのみを使用
するため、フェート現象を起こすことがない。Furthermore, since the method of the present invention uses only stone wax, which is an inorganic substance, the fade phenomenon does not occur.
［実施例］ 以下実施例により本発明を説明する。[Example] The present invention will be explained below with reference to Examples.
（摩擦部材の製造）
摩擦部材としてはクラッチフェーシングを以下のように
して製造した。(Manufacture of friction member) As a friction member, a clutch facing was manufactured as follows.
ロックファイバー６０重量％、芳香族ポリアミド繊維４
重量％、ガラス繊維３６重量％の繊維材６０重量部、真
ちゅう線５重量部、およびカシューダスト１５重量部を
配合した撚り紐にフェノール変性メラミン樹脂を２０重
量部含浸させ、１３５℃で５分間乾燥する。乾燥させた
撚り紐を円盤状に巻き取り、１７０℃の金型に挿入して
圧力１３０ Ｋｇ／ｃｍ２で３分間加熱成形し、さらに
１８０℃で３時間、２３０℃で２時間熱処理したのち研
磨して摩擦部材Ａを得た。Rock fiber 60% by weight, aromatic polyamide fiber 4%
20 parts by weight of phenol-modified melamine resin was impregnated into a twisted string containing 60 parts by weight of fiber material of 36% by weight of glass fiber, 5 parts by weight of brass wire, and 15 parts by weight of cashew dust, and dried at 135°C for 5 minutes. do. The dried twisted string was wound into a disc shape, inserted into a mold at 170°C, heated and molded at a pressure of 130 kg/cm2 for 3 minutes, and then heat-treated at 180°C for 3 hours and 230°C for 2 hours, and then polished. A friction member A was obtained.
［実施例１〜３］
摩擦部材Ａに平均粒径５μｍの石ロウ粉体を表に記載し
た配合量を供給し、回転プレートにて摺動面に擦り込み
、無石綿紐基材を得た。[Examples 1 to 3] Stone wax powder having an average particle size of 5 μm was supplied to the friction member A in the amount shown in the table, and rubbed onto the sliding surface with a rotating plate to obtain an asbestos-free string base material.
［実施例４〜６］
水４０重量％に平均粒径５μｍの石コウ６０重量％攪拌
混合し表面処理液を得る。[Examples 4 to 6] 60% by weight of gypsum having an average particle size of 5 μm is mixed with 40% by weight of water to obtain a surface treatment liquid.
摩擦部材Ａに、表面処理液を所定量スプレーガンにて塗
布したのち、常温で乾燥させて、無石綿紐基材を得た。A predetermined amount of the surface treatment liquid was applied to the friction member A using a spray gun, and then dried at room temperature to obtain an asbestos-free string base material.
［比較例コ 比較例１は摩擦部材Ａそのものである。[Comparative example Comparative Example 1 is the friction member A itself.
（評価）
実施例１〜６および比較例１の無石綿紐基材についてフ
ルサイズダイナモ試験機を用いサイズ外径２００ｍｍＸ
内径１４０ｍｍＸ厚さ３．５ｍｍ。(Evaluation) The asbestos-free string base materials of Examples 1 to 6 and Comparative Example 1 were tested using a full-size dynamo tester with an outer diameter of 200 mm.
Inner diameter 140mm x thickness 3.5mm.
イナーシャ０ 、２ Ｋｇｍ ５ｅｅ２）係合回転数１
８００ｒｐｍ 、プレッシャプレート係合前温度３００
℃×２０００回、クラッチカバー荷重４００にｇの条件
で、初期摩擦係数、フェード期の摩擦係数、安定期摩擦
係数および両面体積摩耗率を測定評価し、その結果を表
に示した。Inertia 0, 2 Kgm 5ee2) Engagement rotation speed 1
800 rpm, temperature before pressure plate engagement 300
The initial friction coefficient, the friction coefficient in the fade period, the friction coefficient in the stable period, and the volumetric wear rate on both sides were measured and evaluated under the conditions of 2000 times at °C and a clutch cover load of 400 g, and the results are shown in the table.
摩擦材が得られた。A friction material was obtained.
特許出願人 アイシン化工株式会社
代表者宮地治夫
本発明の方法で得られた実施例１〜６の無石綿紐基材は
、比較例に比べ、初期摩擦係数が高く、フェード現象が
ない。Patent Applicant: Aisin Kako Co., Ltd. Representative Haruo Miyaji The asbestos-free string base materials of Examples 1 to 6 obtained by the method of the present invention have a higher initial friction coefficient and no fading phenomenon than the comparative example.
Claims (2)
のち、成形、硬化させた摩擦部材の摺動面に粒径が０．
５μｍ〜１０μｍの石コウを擦り込むことを特徴とする
無石綿摩擦材の製造方法。(1) Asbestos-free string base material is impregnated with thermosetting resin, dried, molded and cured, and the sliding surface of the friction member has a particle size of 0.
A method for producing an asbestos-free friction material, which comprises rubbing in gypsum of 5 μm to 10 μm.
面に石コウの懸濁液を塗布し、乾燥させることを特徴と
する無石綿摩擦材の製造方法。(2) A method for manufacturing an asbestos-free friction material, which comprises applying a suspension of gypsum to the sliding surface of the friction member according to claim (1) and drying the suspension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23993988A JPH0288643A (en) | 1988-09-26 | 1988-09-26 | Production of non-asbestos frictional material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23993988A JPH0288643A (en) | 1988-09-26 | 1988-09-26 | Production of non-asbestos frictional material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0288643A true JPH0288643A (en) | 1990-03-28 |
Family
ID=17052068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23993988A Pending JPH0288643A (en) | 1988-09-26 | 1988-09-26 | Production of non-asbestos frictional material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0288643A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342985A (en) * | 2013-06-06 | 2013-10-09 | 贵阳天龙摩擦材料有限公司 | Friction material without asbestos layer and manufacturing method |
-
1988
- 1988-09-26 JP JP23993988A patent/JPH0288643A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342985A (en) * | 2013-06-06 | 2013-10-09 | 贵阳天龙摩擦材料有限公司 | Friction material without asbestos layer and manufacturing method |
| CN103342985B (en) * | 2013-06-06 | 2015-01-14 | 贵阳天龙摩擦材料有限公司 | Friction material without asbestos layer and manufacturing method |
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