JPS61103022A - Friction material - Google Patents

Friction material

Info

Publication number
JPS61103022A
JPS61103022A JP22269084A JP22269084A JPS61103022A JP S61103022 A JPS61103022 A JP S61103022A JP 22269084 A JP22269084 A JP 22269084A JP 22269084 A JP22269084 A JP 22269084A JP S61103022 A JPS61103022 A JP S61103022A
Authority
JP
Japan
Prior art keywords
friction
friction material
fibers
metal layer
fiber
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
Application number
JP22269084A
Other languages
Japanese (ja)
Inventor
Shigeru Kudo
茂 工藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Corp
Original Assignee
Hitachi Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Chemical Co Ltd filed Critical Hitachi Chemical Co Ltd
Priority to JP22269084A priority Critical patent/JPS61103022A/en
Publication of JPS61103022A publication Critical patent/JPS61103022A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/02Composition of linings ; Methods of manufacturing
    • F16D69/025Compositions based on an organic binder
    • F16D69/026Compositions based on an organic binder containing fibres

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

PURPOSE:To ensure the initial coefficient of friction by polishing the surface of a friction material, forming a metal layer, and smoothing the surface. CONSTITUTION:A composition material contains inorganic fiber, organic fiber, reinforcing metallic wire and thermosetting binder. The composition material is put in a metal mold and formed by pressing and heating. Subsequently, a metal layer is formed on the surface of the molded article by thermal spraying or the like, and the surface is smoothed to have surface roughness of below 40mum, so that nap on the surface is removed.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は車両用摩擦材2%にクラッチフェーシング、ブ
レーキライニング等の改良に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to improvements in clutch facings, brake linings, etc. in a 2% friction material for vehicles.

(従来技術とその問題点) 摩擦材に関しては、従来アスベストが主基材として用い
られてきたが、自動車が高性能になるにつれ耐摩耗性1
機械的強度等高特性が要求され始めてきた。この条件を
満足させるためKは、アスベストでは限界がちシ、また
最近は作業環境の整備、原料の安全入手などから脱アス
ベスト化が進められている。
(Prior art and its problems) Conventionally, asbestos has been used as the main base material for friction materials, but as automobiles become more sophisticated, wear resistance
High mechanical strength characteristics have begun to be required. In order to satisfy this condition, asbestos tends to have its limits, and in recent years, efforts have been made to eliminate asbestos in order to improve the working environment and safely obtain raw materials.

アスベスト&C替わる材料として、ガラス繊維。Glass fiber as an alternative material to asbestos & C.

金属短繊維、スフ、天然綿、芳香族ポリアミド繊維等の
耐熱性の良い有機繊維が検討されているが。
Organic fibers with good heat resistance such as short metal fibers, staple fibers, natural cotton, and aromatic polyamide fibers are being considered.

特性と価格の点からガラス繊維が用いられるようKなっ
てきた。しかし、ガラス繊維を用いると。
Glass fiber is increasingly being used due to its properties and cost. However, when using glass fiber.

成形したときガラス繊維が樹脂に良く固定されないため
表面研磨のときけばだち、摩擦係数を測定すると9面当
シがつくまでの初期の摩擦係数が低いという欠点を生じ
る。
When molded, the glass fibers are not well fixed to the resin, resulting in fuzzing when the surface is polished, and when measuring the coefficient of friction, the initial coefficient of friction is low until the 9-face contact is achieved.

(発明の目的) 本発明は上記の欠点のない摩擦材を提供することを目的
とするものでちる。
(Object of the Invention) The object of the present invention is to provide a friction material that does not have the above-mentioned drawbacks.

(問題点を解決するための手段) 本発明者は、上記問題に鑑み1種々検討した結果、摩擦
材の表面を研磨後金属層を形成し、さらに表面を滑らか
(表面粗さを40μm以下)にすることによって初期の
摩擦係数の優れた摩擦材が得られることを見い出した。
(Means for solving the problem) As a result of various studies in view of the above problems, the inventor of the present invention formed a metal layer after polishing the surface of the friction material to further smooth the surface (surface roughness of 40 μm or less). It has been found that a friction material with an excellent initial friction coefficient can be obtained by

本発明は無機繊維、有機繊維、金属線および熱硬化性結
合剤(以下結合剤とする)を含む組成物を加圧加熱成形
して得られる摩擦材において1表面を研磨した後金属層
を形成し、さらに表面に付着しているけばたちを取り除
き5表面粗さを40μm以下とした摩擦材に関する。
The present invention forms a metal layer after polishing one surface of a friction material obtained by pressurizing and heating a composition containing inorganic fibers, organic fibers, metal wires, and a thermosetting binder (hereinafter referred to as binder). Furthermore, the present invention relates to a friction material having a surface roughness of 40 μm or less by removing fluff adhering to the surface.

本発明になる摩擦材の製造工程については特に制限はな
いが9例えば繊維紐に結合剤を付着させる工程、結合剤
を付着させた繊維紐を予備成形機にて巻き取り、冷間プ
レスを行ってタブレットを成形する工程、これを金型内
で加圧、加熱成形する工程、成形品表面を研磨する工程
9表面仕上げなどの工程を経て得られる。
There are no particular restrictions on the manufacturing process of the friction material of the present invention, but for example, a process of attaching a binder to a fiber string, winding the fiber string with the binder attached thereto in a preforming machine, and cold pressing. The product is obtained through steps such as forming a tablet using a metal mold, pressurizing and heating the tablet in a mold, polishing the surface of the molded product, and finishing the surface.

繊維紐に結合剤を含浸させる工程とは摩擦材の基材とな
る各種繊維を予め口r−ピピンヤーン又は紐状に加工し
、これを濃度調整されたフェノール系樹脂、ゴム等が混
合された結合剤の入った含浸槽にて含浸させた後、乾燥
炉内で乾燥させる工程のことである。
The process of impregnating the fiber string with a binder is to process various fibers, which will be the base material of the friction material, into a yarn or string shape in advance, and then bind this with a mixture of phenolic resin, rubber, etc. with an adjusted concentration. This is a process in which the material is impregnated in an impregnating tank containing the agent and then dried in a drying oven.

本発明において無機繊維としては石綿、ガラス繊維、セ
ラミック繊維等が、有機繊維としてはフェノール繊維、
ポリイミド繊維、スフ等が用いられ、これらは単独系又
は混合系で用いられる。単独系で用いるときは、fIN
、維紐は数百本収束して紐状とし、さらKかさ高加工し
て使用すると好ましい。このかさ高加工とは繊維紐にク
リンプ形態を持たせることで繊維の風合を改良し、伸縮
性とかさ高性を付与する加工のことである。また混合系
で用いるときは繊維紐を数百本収束して紐状とし。
In the present invention, inorganic fibers include asbestos, glass fiber, ceramic fiber, etc., and organic fibers include phenol fiber,
Polyimide fibers, fabrics, etc. are used, and these can be used alone or in a mixed system. When used alone, fIN
It is preferable to converge several hundred fiber cords into a string shape, process the fibers to make them bulky, and then use them. This bulking process is a process that improves the texture of the fibers by giving them a crimp form, giving them elasticity and bulk. When used in a mixed system, several hundred fiber strings are converged to form a string.

かさ高加工して用いるか、又はスライバーとして撚シを
加えたものを用いると好ましい。スライバーとは複数の
繊維を均一に混綿し、これをカーディングマシンにかけ
ウェブとし9次にウェブをコンデンサーにかけて紐状に
することである。
It is preferable to use a sliver that is processed to be bulky or twisted as a sliver. A sliver is made by uniformly blending multiple fibers, applying it to a carding machine to form a web, and then applying the web to a condenser to form a string.

繊維紐は上記繊維の他に黄銅線、亜鉛線、銅線等の金属
線で補強してもよい。
The fiber string may be reinforced with metal wire such as brass wire, zinc wire, copper wire, etc. in addition to the above-mentioned fibers.

結合剤としては、フェノール系樹脂、メラミン系樹脂等
の熱硬化性樹脂及び硬化性ゴム組成物が用いられる。こ
こで、硬化性ゴム組成物とは。
As the binder, thermosetting resins such as phenolic resins and melamine resins, and curable rubber compositions are used. Here, what is a curable rubber composition?

SBR,NBR,等の合成ゴム又は天然ゴムと加硫剤。Synthetic rubber or natural rubber such as SBR, NBR, and vulcanizing agent.

促進剤、加硫助剤を主成分とする。この組成物にはこれ
らの他に必要に応じ摩擦特性を向上させるだめの添加剤
が加えられる。添加剤としてはカシューダスト、カーボ
ンブラック、二硫化モリブデン、グラファイト、炭酸カ
ルシウム、炭酸マグネシウム等が用いられる。
The main ingredients are accelerators and vulcanization aids. In addition to these, additives for improving friction properties may be added to the composition, if necessary. As additives, cashew dust, carbon black, molybdenum disulfide, graphite, calcium carbonate, magnesium carbonate, etc. are used.

金属層としては溶射等の手段で形成し、亜鉛。The metal layer is formed by thermal spraying or other means, and is made of zinc.

アルミニウム等の金属層を形成することが好ましく、ま
た金属層の厚さは表面のけばだちを取り除いて表面を滑
らかKする関係で2〜20μmの厚さに形成することが
好ましい。
It is preferable to form a metal layer such as aluminum, and the thickness of the metal layer is preferably 2 to 20 .mu.m in order to remove surface roughness and make the surface smooth.

本発明になる摩擦材の表面粗さは40μm以下にする事
が必要でちり、40μmを越えると初期の摩擦係数が低
くなる。
The surface roughness of the friction material of the present invention must be 40 μm or less, and if it exceeds 40 μm, the initial coefficient of friction will be low.

本発明で用いる各種配合材は、上記に限定するものでは
なく、必要に応じ公知のものが使用できる。また、配合
材の配合割合についても特に制約はなく、使用する摩擦
材の用途1例えばクラッチフェーシング、ブレーキライ
ニング等に応じて周知の配合材より選定してその割合を
定める事がで合したが、繊維紐に付着させておいても良
い。
The various compounding materials used in the present invention are not limited to those mentioned above, and known materials can be used as necessary. Furthermore, there are no particular restrictions on the blending ratio of the compounding materials, and the proportions can be determined by selecting from well-known compounding materials depending on the application of the friction material to be used, such as clutch facings, brake linings, etc. It may also be attached to a fiber string.

(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.

実施例 直径12μmのガラス繊維20重量部を収束させロービ
ング加工した加工繊維に、かさ高加工を施して繊維紐ム
)を得た。この繊維組込)に結合剤溶°液を含浸し、繊
維紐(AIK固形分でフェノール樹脂(日立化成工業K
K製、商品名PRX 524 )’15重量部、充填剤
として炭酸カルシウム38重量部。
Example 20 parts by weight of glass fibers having a diameter of 12 μm were condensed and roved to form a processed fiber, which was subjected to a bulking process to obtain a fiber string. The fiber string (AIK solid content) was impregnated with a binder solution, and the fiber string (AIK solid content) was impregnated with phenolic resin (Hitachi Chemical K.
Made by K, trade name PRX 524)' 15 parts by weight, 38 parts by weight of calcium carbonate as a filler.

架橋剤としてイオウと亜鉛化の混合物10重量部および
SBRゴム(日本合成ゴムKK製、商品名JSR150
7)15重量部を付着させた。結合剤溶液についてはフ
ェノール樹脂、SBRゴム、充填剤、架橋剤をあらかじ
め混練機で充分混練しておいた。
10 parts by weight of a mixture of sulfur and zinc as a crosslinking agent and SBR rubber (manufactured by Japan Synthetic Rubber KK, trade name JSR150)
7) 15 parts by weight was deposited. As for the binder solution, the phenol resin, SBR rubber, filler, and crosslinking agent were sufficiently kneaded in advance using a kneader.

繊維紐cA)に結合剤溶液を含浸した後100°Cで1
5分間乾燥した。これを予備成形型にうす巻き状に巻き
つけて予備成形を行った。次いでこれを面圧150 k
g/cm2.型温155℃にセットされた金型内に入れ
て5分間加圧加熱成形した。これを200℃で4時間熱
処理後砥石で表面研磨してクラッチフェーシング(Al
を得た。その後クラッチフェーシング(A)の摺動面側
KIOμmの厚さに亜鉛を溶射して付着させ9次いで第
1図および第2図に示す如く高速で回転しているロール
(材質:SKH2)1を通してのけばだちを取り除いて
滑らかにし9表面粗さが20μm、30μmおよび40
μmのクラッチフェーシングfB)を得た。
1 at 100°C after impregnating the fiber string cA) with the binder solution.
Dry for 5 minutes. This was wrapped in a thin spiral around a preforming mold to perform preforming. This was then subjected to a surface pressure of 150 k
g/cm2. It was placed in a mold set at a mold temperature of 155° C. and molded under pressure and heat for 5 minutes. After heat treatment at 200℃ for 4 hours, the surface was polished with a grindstone to form a clutch facing (Al
I got it. After that, zinc is deposited by thermal spraying to a thickness of KIO μm on the sliding surface side of the clutch facing (A), and then passed through a roll (material: SKH2) 1 rotating at high speed as shown in Figures 1 and 2. Remove lint and smooth 9 Surface roughness of 20μm, 30μm and 40μm
A clutch facing fB) of μm was obtained.

なお第1図および第2図において2はクラッチフェーシ
ング(Al、3はストッパー、4はベルトコンベアー、
第2図において5はモーターである。
In Figures 1 and 2, 2 is a clutch facing (Al, 3 is a stopper, 4 is a belt conveyor,
In FIG. 2, 5 is a motor.

比較例 実施例で得た繊維紐(A)に結合剤溶液を含浸し。Comparative example The fiber string (A) obtained in the example was impregnated with a binder solution.

繊維組入)に固形分でフェノール樹脂(日立化成工、l 業KK製、商品名PRX524)20重量部、NBRゴ
ム20重量部、充填剤28重量部および架橋剤10重量
部を付着させた。結合剤溶液についてはフェノール樹脂
、NBRゴム(日本ゼオン■製。
20 parts by weight of a phenol resin (manufactured by Hitachi Chemical Co., Ltd. KK, trade name: PRX524), 20 parts by weight of NBR rubber, 28 parts by weight of a filler, and 10 parts by weight of a crosslinking agent were attached to the fibers (incorporated into fibers). As for the binder solution, phenolic resin and NBR rubber (manufactured by Nippon Zeon ■) were used.

商品名N1pol  l052J)充填剤、加橋剤をあ
らかじめ混練機で充分混練しておいた。なお充填剤及び
架橋剤は実施例と同じものを使用した。
(Product name: N1pol 1052J) The filler and crosslinking agent were sufficiently kneaded in advance using a kneader. Note that the same filler and crosslinking agent as in the examples were used.

次に100℃で15分間乾燥した。これを予備成形金型
にうす巻き状に巻きつけて予備成形を行った。次いで実
施例と同様の方法で加熱加圧成形し、熱処理後1表面を
研磨し、た。この後表面に金属層を形成せずロールを通
して表面を滑らかにし表面粗さが40μmのクラッチフ
ェーシング(C)を得た。
Next, it was dried at 100°C for 15 minutes. This was wrapped in a thin spiral around a preforming mold to perform preforming. Then, it was molded under heat and pressure in the same manner as in the example, and after the heat treatment, one surface was polished. Thereafter, the surface was smoothed by passing it through a roll without forming a metal layer on the surface to obtain a clutch facing (C) with a surface roughness of 40 μm.

実施例および比較例で得られたクラッチフェーシングに
ついて各種試験を行った。その結果を第1表に示す。
Various tests were conducted on the clutch facings obtained in Examples and Comparative Examples. The results are shown in Table 1.

なお各種試験条件は次の通りである。The various test conditions are as follows.

■ 安定時摩擦係数、初期の摩擦係数、摩耗量について
は慣性式フルサイズテスターで試験した。
■ The stable friction coefficient, initial friction coefficient, and amount of wear were tested using an inertial full-size tester.

試料は外径200mm、内径130m、厚さ3.5=の
クラッチフェーシングを用い試験条件は慣性能率0.1
2kg・m・秒2.試験回数10000回1回転数15
00回転(rpm )で行った。
The sample was a clutch facing with an outer diameter of 200 mm, an inner diameter of 130 mm, and a thickness of 3.5 mm, and the test conditions were an inertia rate of 0.1.
2kg・m・sec2. Number of tests: 10,000 times 1 rotation: 15
00 revolutions (rpm).

■ 実車シャダーは実車にてシャダーGを測定した。■For the actual vehicle shudder, the shudder G was measured on the actual vehicle.

■ 曲げ試験についてはJIS D 4311に従って
行った。
■ The bending test was conducted in accordance with JIS D 4311.

上記試験について考察すれば摩耗、安定時摩擦係数、実
車シャダー、機械的強度については本発明品は従来品と
変わりない値を示すが、初期の摩擦係数については本発
明品は充分に高い値を示す。
Considering the above tests, the product of the present invention shows the same values as the conventional product in terms of wear, stable friction coefficient, actual vehicle shudder, and mechanical strength, but the product of the present invention shows sufficiently high values for the initial friction coefficient. show.

(発明の効果) 本発明になる摩擦材は従来所持している優れた特性を損
うことなく初期の摩擦係数が高く、従来品より優れるた
め工業的に極めて好適である。
(Effects of the Invention) The friction material of the present invention has a high initial coefficient of friction without impairing the excellent properties previously possessed, and is superior to conventional products, making it extremely suitable industrially.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の実施例になる摩擦材の表面を研磨して
滑らかにする状態を示す側面図、第2図はその斜視図で
ある。 符号の説明 1・・・ロール     2・・・クラッチ7エー7ン
グ(A)3・・・ストッパー  4・・・ベルトコンベ
アー5・・・モーター 第 1 口 第2の
FIG. 1 is a side view showing the state in which the surface of a friction material according to an embodiment of the present invention is polished and smoothed, and FIG. 2 is a perspective view thereof. Explanation of symbols 1...Roll 2...Clutch 7A7ing (A) 3...Stopper 4...Belt conveyor 5...Motor 1st port 2nd

Claims (1)

【特許請求の範囲】[Claims] 1、無機繊維、有機繊維、金属線および熱硬化性結合剤
を含む組成物を加圧加熱成形して得られる摩擦材におい
て、表面を研磨した後金属層を形成し、さらに表面に付
着しているけばだちを取り除き、表面粗さを40μm以
下とした摩擦材。
1. In a friction material obtained by pressurizing and heat-molding a composition containing inorganic fibers, organic fibers, metal wires, and a thermosetting binder, the surface is polished, a metal layer is formed, and the metal layer is further adhered to the surface. Friction material with surface roughness of 40μm or less by removing rough edges.
JP22269084A 1984-10-23 1984-10-23 Friction material Pending JPS61103022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22269084A JPS61103022A (en) 1984-10-23 1984-10-23 Friction material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22269084A JPS61103022A (en) 1984-10-23 1984-10-23 Friction material

Publications (1)

Publication Number Publication Date
JPS61103022A true JPS61103022A (en) 1986-05-21

Family

ID=16786384

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22269084A Pending JPS61103022A (en) 1984-10-23 1984-10-23 Friction material

Country Status (1)

Country Link
JP (1) JPS61103022A (en)

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