JP2000038458A - Production of substance for friction material - Google Patents
Production of substance for friction materialInfo
- Publication number
- JP2000038458A JP2000038458A JP20639098A JP20639098A JP2000038458A JP 2000038458 A JP2000038458 A JP 2000038458A JP 20639098 A JP20639098 A JP 20639098A JP 20639098 A JP20639098 A JP 20639098A JP 2000038458 A JP2000038458 A JP 2000038458A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- impregnated
- rubber
- friction material
- hole
- 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
Landscapes
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、車両の動力伝達お
よび制動等に用いられるクラッチフェーシング、ブレー
キライニングおよびディスクパッド等の摩擦材を形成す
る素材として好適な摩擦材用素材の製造技術分野に属す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of manufacturing a material for a friction material suitable as a material for forming a friction material such as a clutch facing, a brake lining and a disk pad used for power transmission and braking of a vehicle. .
【０００２】[0002]
【従来の技術】特開昭５７−１９５９３６号公報には、
電線被覆と同様に、基材繊維束に熱硬化性樹脂を含浸さ
せた樹脂含浸紐を配合ゴムに含浸した状態で押し出し、
樹脂含浸紐の周りに押し出された配合ゴムを直接被覆さ
せて摩擦材用素材を製造する方法が開示されている。2. Description of the Related Art JP-A-57-195936 discloses that
Similar to wire coating, extruding a resin-impregnated string impregnated with a thermosetting resin into a base fiber bundle while impregnating the compounded rubber,
A method of manufacturing a material for a friction material by directly coating a compounded rubber extruded around a resin-impregnated cord is disclosed.
【０００３】しかしながら、同公報に開示された摩擦材
用素材の製造方法では、樹脂含浸紐を狭いニップルの中
を通して配合ゴムに含浸させる必要があった。それゆ
え、樹脂含浸紐を形成している紐の結び目が、押し出し
機の狭いニップルを通ることができず、つかえてしまう
ことがあるという不都合があった。また、樹脂含浸紐が
押し出し機の入口ニップルでこすれて毛羽立ち、その毛
羽がやはり狭い出口ニップルに引っかかって樹脂含浸紐
の供給が止まってしまうような不都合も起こり得た。か
といって入口および出口のニップルの直径を大きく設定
すると、押し出しゴムが入口ニップルから逆流してしま
うので、両上記不都合を解消し、適正なニップル径およ
び押し出し圧を設定することは容易ではなかった。However, in the method of manufacturing a material for a friction material disclosed in the publication, it is necessary to impregnate the compounded rubber with a resin-impregnated cord through a narrow nipple. Therefore, there is a disadvantage that the knot of the string forming the resin-impregnated string cannot pass through the narrow nipple of the extruder and may be caught. In addition, the resin-impregnated cord may be rubbed and fuzzed by the inlet nipple of the extruder, and the fluff may be caught by the narrow exit nipple, thereby stopping the supply of the resin-impregnated cord. However, if the diameters of the nipples at the inlet and the outlet are set to be large, the extruded rubber flows backward from the inlet nipple, so it is not easy to solve the above-mentioned disadvantages and to set an appropriate nipple diameter and an appropriate extrusion pressure. .
【０００４】一方、特公平１−２２８５５号公報および
特公平３−２３７７号公報には、基材繊維束に熱硬化性
樹脂を含浸させた樹脂含浸紐に両面から配合ゴムの薄い
シートを合わせ、二枚のゴムシートを樹脂含浸紐にロー
ルで圧着させて張り合わせる摩擦材用素材の製造方法が
開示されている。しかしながら、上記両公報に開示され
た摩擦材用素材の製造方法では、薄いゴムシートを予め
製作したり、製造工程の途中で形成したりしなくてはな
らないので、工程が複雑になり、製造コストが上昇す
る。そればかりではなく、ゴムシートで樹脂含浸紐を完
全に覆って互いに隣り合う樹脂含浸紐を束ねるので、摩
擦材用素材中のゴムの配合率が６０％以上と高くならざ
るを得ない。それゆえ、このような摩擦材用素材から製
造した摩擦材では、引っ張り強度が不足しがちであり、
高速回転時のバースト強度が低下する恐れが生じる。[0004] On the other hand, Japanese Patent Publication No. 1-28555 and Japanese Patent Publication No. 3-2377 disclose that a thin sheet of compounded rubber is bonded from both sides to a resin-impregnated cord in which a base fiber bundle is impregnated with a thermosetting resin. There is disclosed a method for producing a material for a friction material in which two rubber sheets are pressure-bonded to a resin-impregnated cord with a roll and bonded. However, in the method of manufacturing a material for a friction material disclosed in the above publications, a thin rubber sheet must be manufactured in advance or formed in the middle of the manufacturing process, which complicates the process and reduces the manufacturing cost. Rises. In addition, since the resin-impregnated cords are completely covered with the rubber sheet and the resin-impregnated cords adjacent to each other are bundled, the compounding ratio of the rubber in the friction material material must be as high as 60% or more. Therefore, a friction material manufactured from such a material for a friction material tends to have insufficient tensile strength,
There is a possibility that the burst strength at the time of high-speed rotation is reduced.
【０００５】[0005]
【発明が解決しようとする課題】そこで本発明は、樹脂
含浸紐に結び目があっても差し支えなく、樹脂含浸紐が
毛羽立つことも防止されており、そのうえ摩擦材用素材
中の配合ゴムの含有量を任意に設定することが可能な摩
擦材用素材の製造方法を提供することを解決すべき課題
とする。Therefore, in the present invention, the resin-impregnated string may have a knot, the resin-impregnated string is prevented from fluffing, and the content of the compounded rubber in the friction material is further reduced. It is an object of the present invention to provide a method for producing a material for a friction material, which can arbitrarily set a friction material.
【０００６】[0006]
【課題を解決するための手段】上記課題に鑑み、本願発
明者が研究をしたところ、摩擦材用素材の段階では、必
ずしも配合ゴムが樹脂含浸紐を完全に覆っている必要は
なく、配合ゴムが部分的に樹脂含浸紐に付着して樹脂含
浸紐と配合ゴムとが混在していれば良いことに思い至っ
た。すなわち、摩擦材用素材の段階では樹脂含浸紐と配
合ゴムとが混在しているだけであっても、摩擦材を製造
する過程で摩擦材用素材を巻回しホットプレスを加える
ことによって、樹脂含浸紐と混在している配合ゴムが樹
脂含浸紐を覆うに至ることを実験的に発見した。本発明
は、このような発見に基づいてなされた。Means for Solving the Problems In view of the above-mentioned problems, the present inventor conducted research and found that at the stage of the material for friction material, the compounded rubber does not necessarily have to completely cover the resin-impregnated string. Was partially adhered to the resin-impregnated cord and thought that the resin-impregnated cord and the compounded rubber should be mixed. In other words, even if the resin impregnated cord and the compounded rubber are only mixed at the stage of the friction material, the material is impregnated by winding the friction material in the process of manufacturing the friction material and applying a hot press. It has been experimentally found that the compounded rubber mixed with the string leads to the covering of the resin-impregnated string. The present invention has been made based on such a finding.
【０００７】本発明の摩擦材用素材の製造方法は、基材
繊維束に熱硬化性樹脂を含浸させた樹脂含浸紐に配合ゴ
ムを付着させて配合ゴム付着樹脂含浸紐からなる摩擦材
用素材を製造する方法であって、一端側から他端側に貫
通する貫通孔と該貫通孔の他端側の開口に近接したノズ
ル孔とをもつ配合ゴム押出型を使用し、該貫通孔に該樹
脂含浸紐を挿通しつつ該ノズル孔より該配合ゴムを連続
的に押し出し該樹脂含浸紐に付着させることを特徴とす
る。The method for producing a material for a friction material according to the present invention is a material for a friction material comprising a resin-impregnated string impregnated with a compounded rubber adhered to a resin-impregnated string obtained by impregnating a base fiber bundle with a thermosetting resin. Using a compound rubber extrusion die having a through hole penetrating from one end side to the other end side and a nozzle hole proximate to an opening at the other end side of the through hole. The compounded rubber is continuously extruded from the nozzle hole while being passed through the resin-impregnated cord, and adhered to the resin-impregnated cord.
【０００８】樹脂含浸紐は、配合ゴム押出型内に配設さ
れたパイプ等によって形成されている貫通孔を通って貫
通孔の一方から他方へと挿通されるので、貫通孔内では
配合ゴムと隔離されており、配合ゴムが貫通孔から逆流
するような不都合は回避されている。また、貫通孔の内
径を十分に大きく取ることが可能になるので、樹脂含浸
紐に結び目があっても差し支えなく、樹脂含浸紐が毛羽
立つことも防止されている。なお、樹脂含浸紐の毛羽立
ちを防止するためには、貫通孔の入口である一端部が、
漏斗状ないしラッパ状に滑らかに拡げられて開口してい
ることが望ましい。[0008] The resin-impregnated cord is inserted from one of the through holes to the other through a through hole formed by a pipe or the like provided in a compound rubber extrusion die. It is isolated, and the disadvantage that the compounded rubber flows backward from the through hole is avoided. In addition, since the inside diameter of the through hole can be made sufficiently large, there is no problem even if the resin-impregnated string has a knot, and the resin-impregnated string is prevented from fluffing. In order to prevent the resin-impregnated cord from fluffing, one end, which is the entrance of the through-hole,
It is desirable that the opening is smoothly expanded and funnel-shaped or trumpet-shaped.
【０００９】一方、未硬化の配合ゴムは、配合ゴム押出
型の貫通孔の他端側の開口に近接したノズル孔から押し
出されてゴム紐を形成する。この際、このゴム紐を押し
出す速度は、樹脂含浸紐の挿通速度と同等ないし少し遅
い程度が適当である。そしてこのゴム紐は、ノズル孔と
隣り合う貫通孔から挿通される樹脂含浸紐とともに、ガ
イド等によって束ね合わせられて部分的に樹脂含浸紐に
付着し、所定の太さの摩擦材用素材を形成するに至る。On the other hand, the uncured compounded rubber is extruded from a nozzle hole close to an opening on the other end side of the through hole of the compounded rubber extrusion die to form a rubber cord. At this time, the speed at which the rubber cord is extruded is suitably equal to or slightly lower than the insertion speed of the resin-impregnated cord. The rubber cord is bound together with a resin impregnated cord inserted through a through hole adjacent to the nozzle hole by a guide or the like, and partially adheres to the resin impregnated cord to form a material for a friction material having a predetermined thickness. Leads to.
【００１０】このような摩擦材用素材の状態では、配合
ゴムが樹脂含浸紐の全体を覆っている訳ではなく、配合
ゴムは樹脂含浸紐に部分的に付着しているだけである。
しかしながら、摩擦材用素材の段階では樹脂含浸紐と配
合ゴムとが混在しているだけであっても、摩擦材を製造
する過程で摩擦材用素材を巻回しホットプレスを加える
ことによって、樹脂含浸紐と混在している配合ゴムが樹
脂含浸紐を覆うに至る。それゆえ、本発明の摩擦材用素
材を材料として形成された摩擦材は、樹脂含浸紐が互い
に配合ゴムによってしっかりと結合されて形成されるの
で、樹脂含浸紐同士が強固に結合される。In the state of such a material for a friction material, the compounded rubber does not cover the entire resin-impregnated string, but the compounded rubber only partially adheres to the resin-impregnated string.
However, even if the resin impregnated string and the compounded rubber are only mixed at the stage of the material for friction material, the material for the friction material is wound in the process of manufacturing the friction material, and the resin is impregnated by hot pressing. The compounded rubber mixed with the string reaches the resin-impregnated string. Therefore, in the friction material formed using the material for friction material of the present invention, the resin-impregnated cords are firmly connected to each other by the compounded rubber, so that the resin-impregnated cords are strongly connected to each other.
【００１１】また、樹脂含浸紐を通す貫通孔の本数と配
合ゴムが押し出されるノズル孔の個数との比率や、樹脂
含浸紐の太さに対するノズル孔の開口断面積の比率およ
び配合ゴムの押し出し速度等を調整することにより、樹
脂含浸紐に対する配合ゴムの比率を任意に設定すること
が可能になる。それゆえ、本発明の摩擦材用素材の製造
方法によれば、摩擦材用素材として最も適正な樹脂含浸
紐に対する配合ゴムの比率をもって摩擦材用素材を製造
することが可能になるという効果がある。Further, the ratio of the number of through holes through which the resin-impregnated cord passes and the number of nozzle holes through which the compound rubber is extruded, the ratio of the cross-sectional area of the nozzle hole to the thickness of the resin-impregnated cord, and the extrusion speed of the compound rubber By adjusting the ratio, it is possible to arbitrarily set the ratio of the compounded rubber to the resin-impregnated string. Therefore, according to the method for producing a material for a friction material of the present invention, there is an effect that the material for a friction material can be produced with the ratio of the compounded rubber to the most suitable resin-impregnated cord as the material for the friction material. .
【００１２】[0012]
【発明の実施の形態】前述の本発明の摩擦材用素材の製
造方法において、樹脂含浸紐を挿通する貫通孔と配合ゴ
ムを押し出すノズル孔とは、それぞれ均等に混在するよ
うに配設されていることが望ましい。また、ノズル孔の
開口形状は、円形に限定されている必要はなく、楕円形
や長円形、あるいは長方形ないしスリット状等でも良い
ので、配合ゴムから形成されるゴム紐の形状は、円筒状
だけに限定されることがなく、テープ状等の形状をも取
ることができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the above-mentioned method for producing a friction material according to the present invention, the through-holes through which the resin impregnated cords are inserted and the nozzle holes through which the compound rubber is extruded are arranged so as to be evenly mixed. Is desirable. Further, the opening shape of the nozzle hole need not be limited to a circular shape, and may be an elliptical shape, an oval shape, a rectangular shape, a slit shape, or the like. However, the present invention is not limited to this, and can take a shape such as a tape shape.
【００１３】ここで、前記配合ゴム押出型は、互いに平
行であって間隔を隔てた複数の前記貫通孔と、該貫通孔
にそれぞれ近接した少なくとも一個の前記ノズル孔とを
有することが望ましい。このような構成の配合ゴム押出
型によれば、貫通孔が互いに平行で間隔を隔てているの
で、貫通孔への樹脂含浸紐の供給が容易である。また、
各貫通孔の近傍には、その貫通孔に近接した少なくとも
一個のノズル孔が配設されているので、貫通孔から挿通
された樹脂含浸紐の近傍に配合ゴムが押し出される。そ
れゆえ、配合ゴムからなるゴム紐が加硫反応により硬化
して形成される際に、ゴム紐が樹脂含浸紐に付着しやす
くなり、より一体性の高い束状の摩擦材用素材が形成さ
れるという効果がある。Here, it is preferable that the compounding rubber extrusion die has a plurality of the through holes parallel to each other and spaced apart from each other, and at least one nozzle hole respectively adjacent to the through holes. According to the compound rubber extrusion die having such a configuration, since the through holes are parallel to each other and spaced apart from each other, it is easy to supply the resin-impregnated cord to the through holes. Also,
Since at least one nozzle hole adjacent to each through hole is provided near each through hole, the compounded rubber is extruded near the resin impregnated cord inserted through the through hole. Therefore, when the rubber cord made of the compounded rubber is formed by curing by the vulcanization reaction, the rubber cord easily adheres to the resin-impregnated cord, and a more integrated bundle-like friction material material is formed. There is an effect that.
【００１４】[0014]
【実施例】以下、本発明の摩擦材用素材の製造方法の実
施例を図面を参照して示し、具体的に説明する。 ［実施例１］ （実施例１の構成）本発明の実施例１としての摩擦材用
素材の製造方法は、図１に示すように、基材繊維束に熱
硬化性樹脂を含浸させた樹脂含浸紐２に配合ゴムからな
るゴム紐３を付着させて配合ゴム付着樹脂含浸紐からな
る摩擦材用素材を製造する方法である。すなわち、一端
側から他端側に貫通する複数の貫通孔Ｔと貫通孔Ｔの他
端側の開口に近接したノズル孔Ｎとをもつ配合ゴム押出
型Ｄが使用され、貫通孔Ｔに樹脂含浸紐２を挿通しつつ
ノズル孔Ｎより配合ゴムが連続的に押し出されてゴム紐
３が形成され、ゴム紐３は樹脂含浸紐２に付着させられ
る。ここで、配合ゴム押出型Ｄは、互いに平行であって
間隔を隔てた複数の貫通孔Ｔと、貫通孔Ｔにそれぞれ近
接した数本ずつのノズル孔Ｎとを有する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for producing a material for a friction material according to the present invention will be described below with reference to the drawings. Example 1 (Structure of Example 1) As shown in FIG. 1, a method of manufacturing a material for a friction material according to Example 1 of the present invention is a method in which a base fiber bundle is impregnated with a thermosetting resin. In this method, a rubber material 3 made of a compounded rubber is attached to the impregnated string 2 to produce a material for a friction material made of a compounded rubber-adhered resin impregnated string. That is, a compound rubber extrusion die D having a plurality of through holes T penetrating from one end side to the other end side and a nozzle hole N close to an opening at the other end side of the through hole T is used, and the through hole T is impregnated with resin. The rubber compound is continuously extruded from the nozzle holes N while the string 2 is inserted, thereby forming the rubber string 3, and the rubber string 3 is attached to the resin-impregnated string 2. Here, the compound rubber extrusion die D has a plurality of through holes T parallel to each other and spaced apart from each other, and several nozzle holes N respectively adjacent to the through holes T.
【００１５】本実施例の構成について、以下により詳細
に説明する。樹脂含浸紐２を形成している基材繊維束
は、直径９μｍのガラス繊維を引き揃えた直径３ｍｍ程
度のガラスロービングであり、熱硬化性樹脂は、樹脂固
形分にメラミン６０重量部を含有させたメラミン変性フ
ェノール樹脂である。上記ガラスロービング４０重量部
に対して固形分で８重量部のメラミン変性フェノール樹
脂を含浸させることによって樹脂含浸紐２を形成した。The configuration of this embodiment will be described in more detail below. The base fiber bundle forming the resin-impregnated cord 2 is a glass roving having a diameter of about 3 mm in which glass fibers having a diameter of 9 μm are arranged, and the thermosetting resin contains 60 parts by weight of melamine in a resin solid content. Melamine-modified phenolic resin. The resin-impregnated cord 2 was formed by impregnating 40 parts by weight of the above-mentioned glass roving with 8 parts by weight of a melamine-modified phenol resin in solid content.
【００１６】ここで、含浸の際にメラミン変性フェノー
ル樹脂を溶かしていた溶媒は、水であり、同溶媒１００
重量部に対してメラミン変性フェノール樹脂は、４０重
量部の割合で溶かされていた。その後乾燥させて樹脂含
浸紐２を形成した後、４８重量部の樹脂含浸紐に対して
２重量部の黄銅線（直径約１２０μｍ）を合わせて一体
とした。The solvent in which the melamine-modified phenolic resin was dissolved during the impregnation was water,
The melamine-modified phenolic resin was dissolved at a ratio of 40 parts by weight with respect to parts by weight. After drying to form a resin-impregnated cord 2, 2 parts by weight of a brass wire (about 120 μm in diameter) were combined with 48 parts by weight of the resin-impregnated cord to form an integral unit.
【００１７】一方、配合ゴムは、ＳＢＲゴム１５重量部
と、充填剤等からなる添加剤３２重量部と、加硫剤とし
ての硫黄３重量部とを配合して準備した。このような配
合ゴムＧは、同じく図１に示すように、押出機Ｅに付設
されたスクリューＳによって配合ゴム押出型Ｄに圧入さ
れ、所定の圧力で配合ゴム押出型Ｄの開口断面が円形の
ノズル孔Ｎから丸棒状に押し出されてゴム紐３を形成す
る。On the other hand, the compounded rubber was prepared by compounding 15 parts by weight of SBR rubber, 32 parts by weight of an additive consisting of a filler and the like, and 3 parts by weight of sulfur as a vulcanizing agent. Such a compounded rubber G is press-fitted into a compounded rubber extrusion die D by a screw S attached to an extruder E, as shown in FIG. The rubber cord 3 is extruded from the nozzle hole N into a round bar shape.
【００１８】この際、配合ゴム押出型Ｄには、配合ゴム
押出型Ｄの内周空間３０に互いに間隔を隔てて平行に配
設されたパイプＰによって形成される一端側から他端側
に貫通する数本の貫通孔Ｔと、貫通孔Ｔの他端側の開口
に近接したノズル孔Ｎとが形成されている。ノズル孔Ｎ
は、各貫通孔Ｔを取り巻くように各貫通孔Ｔに近接して
一つの貫通孔Ｔあたり数カ所に配設されている。At this time, the rubber compound extrusion die D penetrates from one end side to the other end side formed by pipes P arranged in parallel in the inner peripheral space 30 of the compound rubber extrusion mold D at intervals. Several through holes T and a nozzle hole N close to the opening at the other end of the through hole T are formed. Nozzle hole N
Are provided in several places per one through hole T in the vicinity of each through hole T so as to surround each through hole T.
【００１９】数本のパイプＰの貫通孔Ｔには、黄銅線４
と合わせられた樹脂含浸紐２が挿通されて一方から他方
へと送られる一方、他方側のノズル孔Ｎからは配合ゴム
Ｇが連続的に押し出されてゴム紐３が形成される。ノズ
ル孔Ｎから押し出された配合ゴムＧからなるゴム紐３
と、貫通孔Ｔから送られてきた黄銅線４に合わせられた
樹脂含浸紐２とは、複数の組のガイド（図略）によって
細く纏めれられ、互いに付着させられる。The brass wire 4 is inserted into the through holes T of several pipes P.
The resin-impregnated cord 2 is inserted and sent from one side to the other, while the compound rubber G is continuously extruded from the nozzle hole N on the other side to form the rubber cord 3. Rubber string 3 made of compounded rubber G extruded from nozzle hole N
And the resin-impregnated cord 2 adjusted to the brass wire 4 sent from the through hole T are thinly gathered by a plurality of sets of guides (not shown) and adhered to each other.
【００２０】なお、パイプＰによって形成されている貫
通孔Ｔは、一方の入口側ではラッパ状に滑らかに拡げら
れて開口しており（図略）、樹脂含浸紐２の毛羽立ちの
発生が防止されている。また、パイプＰによって形成さ
れる貫通孔Ｔの内径は、樹脂含浸紐２の直径よりもおお
きく８ｍｍ程度であるから、樹脂含浸紐２に継ぎ目や結
び目があっても、樹脂含浸紐２は差し支えなく貫通孔Ｔ
を挿通することができる。The through hole T formed by the pipe P is smoothly expanded and opened like a trumpet at one inlet side (not shown), so that the resin impregnated cord 2 is prevented from fluffing. ing. Further, since the inner diameter of the through hole T formed by the pipe P is about 8 mm, which is larger than the diameter of the resin-impregnated cord 2, even if the resin-impregnated cord 2 has a seam or a knot, the resin-impregnated cord 2 may have no problem. Through hole T
Can be inserted.
【００２１】その結果、図２に示すように、黄銅線４に
合わせられた数本の樹脂含浸紐２と、樹脂含浸紐２に隣
接して部分的に付着している二十本程度のゴム紐とから
なる摩擦材用素材が得られる。 （実施例１からの摩擦材の製造）以上のように製造され
た本実施例の摩擦材用素材を元にして、次のようにして
摩擦材としてのクラッチフェーシングを試作した。As a result, as shown in FIG. 2, several resin-impregnated cords 2 fitted to the brass wire 4 and about twenty rubbers partially adhered adjacent to the resin-impregnated cords 2 are formed. A material for a friction material consisting of a string is obtained. (Production of Friction Material from Example 1) Based on the friction material material of the present example manufactured as described above, a clutch facing as a friction material was experimentally manufactured as follows.
【００２２】すなわち、本実施例の摩擦材用素材をリン
グ状に巻き取り、金型内に配置して１４．７ＭＰａ（１
５０ｋｇ／ｃｍ2 ）の圧力および１６５℃の温度の高温
高圧下で加熱加圧処理成形した。しかる後、２００℃の
雰囲気に５時間暴露するという熱処理を施してから、所
定の厚さに研摩してクラッチフェーシングを得た。 （実施例１の変形態様１）本実施例の変形態様１とし
て、図３に示すように、樹脂含浸紐２の中に黄銅線４を
撚り合わせ、黄銅線４を含む樹脂含浸紐２とテープ状の
ゴム紐３とを合わせて形成された摩擦材用素材を製造す
る方法の実施が可能である。That is, the material for the friction material of the present embodiment is wound up in a ring shape, and placed in a mold so as to be 14.7 MPa (1
It was heated and pressed under a pressure of 50 kg / cm 2 ) and a high temperature and a high pressure of 165 ° C. Thereafter, a heat treatment of exposing to an atmosphere of 200 ° C. for 5 hours was performed, and then polishing was performed to a predetermined thickness to obtain clutch facing. (Modification 1 of Embodiment 1) As Modification 1 of this embodiment, as shown in FIG. 3, a brass wire 4 is twisted into a resin-impregnated cord 2, and a resin-impregnated cord 2 including the brass wire 4 and a tape are attached. It is possible to carry out a method for manufacturing a material for a friction material formed by combining the rubber material 3 with the rubber cord 3 in a shape.
【００２３】本変形態様では、配合ゴム押出型（図１参
照）は、樹脂含浸紐２を挿通する互いに平行で間隔を隔
てた数本の貫通孔Ｔと、各貫通孔Ｔを挟むように近接し
て配置されたそれぞれ一対のノズル孔Ｎとを有する。な
お、ノズル孔Ｎの開口断面形状は長細い長方形をしてお
り、配合ゴムからなるゴム紐３は断面矩形の薄いテープ
状に形成されている。また、各ゴム紐３は、隣接する樹
脂含浸紐２に中央部付近で部分的に接合している。In this modified embodiment, the compounded rubber extrusion die (see FIG. 1) has several parallel and spaced through holes T through which the resin-impregnated cord 2 is inserted, and a plurality of adjacent through holes T sandwiching each through hole T. And a pair of nozzle holes N respectively arranged. The cross-sectional shape of the opening of the nozzle hole N is a long and narrow rectangle, and the rubber string 3 made of compound rubber is formed in a thin tape shape having a rectangular cross section. Each rubber cord 3 is partially joined to the adjacent resin-impregnated cord 2 near the center.
【００２４】本変形態様によっても、前述の実施例１で
製造された摩擦材用素材と同様にしてクラッチフェーシ
ングを製造することができる摩擦材用素材を製造するこ
とができ、以下に示すような実施例１とほぼ同様の作用
効果が発揮される。 ［評価検討］ （比較例１）本発明の実施例１に対する比較例１とし
て、実施例１と同一の組成の樹脂含浸紐２および黄銅線
４と配合ゴムＧとを材料として、樹脂含浸紐２および黄
銅線４に配合ゴムＧを合わせる工程のみを実施例１と異
なる製造方法で行なった。According to this modified embodiment, a friction material for which clutch facing can be produced in the same manner as the friction material produced in Example 1 can be produced. Almost the same functions and effects as in the first embodiment are exhibited. [Evaluation and Examination] (Comparative Example 1) As Comparative Example 1 with respect to Example 1 of the present invention, resin-impregnated cord 2 having the same composition as in Example 1 and brass wire 4 and compounded rubber G were used as materials. Only the step of combining the compound rubber G with the brass wire 4 was performed by a manufacturing method different from that of Example 1.
【００２５】すなわち、本比較例では、特開昭５７−１
９５９３６号公報に開示されているように、樹脂含浸紐
２および黄銅線４に配合ゴムＧを合わせる工程では、配
合ゴムＧが圧入される押出型内に樹脂含浸紐２等を通
し、樹脂含浸紐２を全周に渡って配合ゴムＧで覆う製造
方法を取った。その結果、電線に絶縁被覆が形成される
ように、断面がおおむね円形の樹脂含浸紐２の周囲にゴ
ム被覆が形成されている摩擦材用素材が試作された。That is, in this comparative example, Japanese Patent Application Laid-Open No.
As disclosed in Japanese Unexamined Patent Publication No. 95936, in the step of combining the compounded rubber G with the resin-impregnated cord 2 and the brass wire 4, the resin-impregnated cord 2 is passed through an extrusion die into which the compounded rubber G is press-fitted. No. 2 was covered with compound rubber G over the entire circumference. As a result, a material for a friction material in which a rubber coating was formed around a resin-impregnated cord 2 having a substantially circular cross section so that an insulating coating was formed on an electric wire was produced.
【００２６】そこで、実施例１の摩擦材の製造方法と同
様にしてクラッチフェーシングを製造した。 （比較例２）本発明の実施例１に対する比較例２とし
て、従来の技術の項で参照した特公平１−２２８５５号
公報および特公平３−２３７７号公報に開示されている
製造法によって摩擦材用素材を製造した。すなわち、前
述の実施例１となるべく同様の組成で、配合ゴムを薄い
ゴムシートにして数本が平行に並べられた樹脂含浸繊維
基材を両側から挟み、一対のロールを通してゴムシート
を樹脂含浸繊維基材に付着させ、摩擦材用素材を試作し
た。Therefore, a clutch facing was manufactured in the same manner as in the method of manufacturing the friction material of Example 1. (Comparative Example 2) As Comparative Example 2 with respect to Example 1 of the present invention, the friction material was manufactured by the manufacturing method disclosed in Japanese Patent Publication No. 22855 and Japanese Patent Publication No. 3-2377 referred to in the section of the prior art. Materials were manufactured. That is, a resin-impregnated fiber base material having a composition similar to that of the above-mentioned Example 1 and sandwiching a resin-impregnated fiber base material in which several thin rubber sheets are arranged in parallel and sandwiching the resin impregnated fiber base material from both sides is used. A material for friction material was prototyped by attaching it to a substrate.
【００２７】しかる後、実施例１の摩擦材の製造方法と
同様にしてクラッチフェーシングを製造した。 （評価試験方法）以上の実施例１と比較例１，２とを比
較する目的で、それぞれの摩擦材用素材から製造された
摩擦材であるクラッチフェーシングに対して、摩擦摩耗
試験およびバースト強度試験を実施した。Thereafter, a clutch facing was manufactured in the same manner as in the method of manufacturing the friction material of Example 1. (Evaluation Test Method) For the purpose of comparing Example 1 with Comparative Examples 1 and 2, a friction wear test and a burst strength test were performed on a clutch facing, which is a friction material manufactured from each friction material material. Was carried out.
【００２８】摩擦摩耗試験は、各クラッチフェーシング
をフルサイズダイナモ試験器に装着し、回転数１８００
ｒｐｍ、慣性モーメント２．７ｋｇｍ2 、係合回数４０
００回および雰囲気温度２００℃の条件下で行われた。
摩擦摩耗試験では、安定時の摩擦係数と最小摩擦係数と
摩耗率とが測定された。一方、バースト強度試験では、
雰囲気温度２００℃でクラッチフェーシングを回転さ
せ、徐々に回転数を上げていって遠心力でクラッチフェ
ーシングが破壊した時の回転数をバースト強度として測
定した。In the friction and wear test, each clutch facing was mounted on a full-size dynamo tester, and the rotational speed was set to 1800.
rpm, moment of inertia 2.7 kgm 2 , number of engagements 40
The test was performed under the conditions of 00 times and an ambient temperature of 200 ° C.
In the friction and wear test, the friction coefficient at the time of stability, the minimum friction coefficient, and the wear rate were measured. On the other hand, in the burst strength test,
The clutch facing was rotated at an ambient temperature of 200 ° C., the rotation speed was gradually increased, and the rotation speed when the clutch facing was broken by centrifugal force was measured as burst strength.
【００２９】（測定結果）前述の実施例１および比較例
１，２の組成と試作時の評価と上記両試験の結果得られ
た各種性能とについて、次の表１にまとめて示す。(Measurement Results) The compositions of Examples 1 and Comparative Examples 1 and 2 and evaluations at the time of trial production and various performances obtained as a result of both tests are summarized in Table 1 below.
【００３０】[0030]
【表１】 [Table 1]
【００３１】上記表１に示すように、本発明の実施例１
により試作された摩擦材用素材を試作する際には、樹脂
含浸紐２を形成しているガラスロービングの結び目が引
っかかるなどの問題は一切発生せず、試作はスムースに
行われた。一方、比較例１の摩擦材用素材を試作する際
には、樹脂含浸紐を形成しているガラスロービングの結
び目が押出型のニップルに引っかかって通過できず、製
造ラインが停止するという不具合が発生した。そればか
りではなく、樹脂含浸紐を形成しているガラスロービン
グが毛羽立って押出型のニップルを通過できず、やはり
製造ラインが停止するという不具合も発生した。As shown in Table 1 above, Example 1 of the present invention
In the trial production of the material for a friction material, the trial production was carried out smoothly without any problem such as the knot of the glass roving forming the resin-impregnated cord 2 getting caught. On the other hand, when the friction material of Comparative Example 1 was experimentally manufactured, the knot of the glass roving forming the resin-impregnated cord was caught by the nipple of the extrusion die and could not pass, and the production line was stopped. did. Not only that, the glass rovings forming the resin-impregnated cords became fluffy and could not pass through the extrusion-type nipples, and the production line was stopped.
【００３２】また、比較例２の摩擦材用素材を試作する
際には、ロール成形されるゴムシートを薄くするとゴム
シートの破断が頻発してしまい、実施例１および比較例
１と全く同じ組成では摩擦材用素材を試作することがで
きなかった。それゆえ、実施例１等よりも樹脂含浸紐お
よび黄銅線の含有率を減らして配合ゴムの含有率を高め
ざるを得ず、ゴムシートを厚くしてようやく試作するこ
とができた。それでもなお、ゴムシートの破断は発生
し、試作時の問題点になった。Further, when the friction material of Comparative Example 2 was trial-produced, if the rubber sheet to be roll-formed was thinned, the rubber sheet was frequently broken, and the same composition as in Example 1 and Comparative Example 1 was used. Could not prototype a material for friction material. Therefore, the content of the resin-impregnated cord and the brass wire had to be reduced to increase the content of the compounded rubber as compared with Example 1 and the like, and the rubber sheet was thickened to finally produce a prototype. Nevertheless, the rubber sheet was broken, which was a problem during trial production.
【００３３】その結果、摩擦摩耗試験では、実施例１の
試験成績は、安定時の摩擦係数では各比較例と同等であ
り、最小摩擦係数では比較例１と同等で比較例２よりも
やや優れており、摩耗率では各比較例よりも優れてい
た。また、バースト強度試験では、実施例１の試験成績
は、いずれの比較例よりも一割から一割半ほど優れてお
り、バースト強度が向上していることが明らかにされ
た。As a result, in the friction and wear test, the test results of Example 1 were equivalent to each comparative example in the friction coefficient at the time of stability, and were equivalent to Comparative Example 1 in the minimum friction coefficient, and were slightly superior to Comparative Example 2. And the wear rate was superior to each comparative example. Further, in the burst strength test, the test results of Example 1 were about 10% to 10% better than any of the comparative examples, and it was revealed that the burst strength was improved.
【００３４】[0034]
【発明の効果】以上詳述したように、本発明の摩擦材用
素材の製造方法では、樹脂含浸紐に結び目があっても差
し支えなく、樹脂含浸紐が毛羽立つことも防止されてい
る。それゆえ、本発明の摩擦材用素材の製造方法によれ
ば、製造時に不具合が生じて製造ラインが停止すること
が防止されており、生産ラインの稼働率が上がってコス
トダウンになるという効果がある。As described in detail above, in the method for producing a material for a friction material according to the present invention, the resin-impregnated string may have a knot, and the resin-impregnated string is prevented from fluffing. Therefore, according to the method of manufacturing a material for a friction material of the present invention, it is possible to prevent the production line from being stopped due to a problem at the time of production, thereby increasing the operation rate of the production line and reducing the cost. is there.
【００３５】また、本発明の摩擦材用素材の製造方法に
よって製造された摩擦材用素材からなるクラッチフェー
シング等の摩擦材は、従来の技術によるものよりも、摩
擦摩耗性能およびバースト強度が向上しているという効
果がある。そればかりではなく、樹脂含浸紐２にゴム紐
３が部分的に接合しているだけで十分であるので、摩擦
材用素材中の配合ゴムの含有量を任意に設定することが
でき、最適な配合ゴムの含有率を設定することが可能に
なるという効果もある。その結果、摩擦材用素材の組成
をかなり自由に設定することが可能になるので、試作試
験を重ねることにより、さらに優れた性能の摩擦材用素
材を提供することができる可能性がある。The friction material, such as clutch facing, made of the friction material material manufactured by the method for manufacturing a friction material material of the present invention has improved friction and wear performance and burst strength as compared with the conventional technology. There is an effect that. In addition, since it is sufficient that the rubber string 3 is partially joined to the resin impregnated string 2, the content of the compounded rubber in the friction material can be arbitrarily set, and the optimum There is also an effect that the content of the compounded rubber can be set. As a result, the composition of the friction material can be freely set. Therefore, repeated trial production tests may provide a friction material with higher performance.
【図１】 実施例１の摩擦材用素材の製造方法に使用す
る押出機の縦断面図FIG. 1 is a longitudinal sectional view of an extruder used in a method of manufacturing a material for a friction material according to a first embodiment.
【図２】 実施例１の摩擦材用素材の構成を示す断面図FIG. 2 is a cross-sectional view illustrating a configuration of a friction material according to a first embodiment.
【図３】 実施例１の変形態様１の摩擦材用素材の構成
を示す断面図FIG. 3 is a cross-sectional view illustrating a configuration of a friction material according to a first modification of the first embodiment;
１，１’：摩擦材用素材 ２：樹脂含浸紐（ガラスロービングにメラミン変性フェ
ノール樹脂を含浸） ３，３’：ゴム紐（配合ゴムからなる） ４：黄銅線 Ｅ：押し出し機 Ｇ：未硬化の配合ゴム Ｄ：配合ゴム押出型 Ｎ：ノズル孔 Ｓ：スクリュ
ー Ｔ：貫通孔 Ｐ：パイプ1, 1 ': Material for friction material 2: Resin impregnated string (glass roving impregnated with melamine-modified phenolic resin) 3, 3': Rubber string (comprising compound rubber) 4: Brass wire E: Extruder G: Uncured N: Nozzle hole S: Screw T: Through hole P: Pipe
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3J058 BA61 BA73 FA01 FA11 FA21 GA04 GA12 GA44 GA64 GA65 GA72 GA92 GA93 4F071 AA12 AA41 AB28 AD01 AH17 DA04 DA10 DA21 4F100 AB31 AG00 AK01A AK33 AK36 AL05A AL06 AN00A BA01 CA03 DA16 DG04 DG06A EH17 EJ82A GB31 JB13A JK01 JK09 JL02 4L033 AA09 AB01 AC08 CA34 CA36 CA68 DA00 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) EJ82A GB31 JB13A JK01 JK09 JL02 4L033 AA09 AB01 AC08 CA34 CA36 CA68 DA00
Claims (2)
樹脂含浸紐に配合ゴムを付着させて配合ゴム付着樹脂含
浸紐からなる摩擦材用素材を製造する方法であって、 一端側から他端側に貫通する貫通孔と該貫通孔の他端側
の開口に近接したノズル孔とをもつ配合ゴム押出型を使
用し、該貫通孔に該樹脂含浸紐を挿通しつつ該ノズル孔
より該配合ゴムを連続的に押し出し該樹脂含浸紐に付着
させることを特徴とする摩擦材用素材の製造方法。1. A method for producing a material for a friction material comprising a resin-impregnated string with a compounded rubber adhered by adhering a compounded rubber to a resin-impregnated string in which a thermosetting resin is impregnated into a base fiber bundle; From the other end side of the through hole and a nozzle hole close to the opening at the other end side of the through hole, using a compound rubber extrusion die, and inserting the resin impregnated cord through the through hole and forming the nozzle hole A process for continuously extruding the compounded rubber and attaching the compounded rubber to the resin-impregnated string.
って間隔を隔てた複数の前記貫通孔と、該貫通孔にそれ
ぞれ近接した少なくとも一個の前記ノズル孔とを有する
請求項１記載の摩擦材用素材の製造方法。2. The friction according to claim 1, wherein the compounded rubber extrusion die includes a plurality of the through holes parallel to each other and spaced apart from each other, and at least one nozzle hole each adjacent to the through hole. The method of manufacturing material for lumber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20639098A JP2000038458A (en) | 1998-07-22 | 1998-07-22 | Production of substance for friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20639098A JP2000038458A (en) | 1998-07-22 | 1998-07-22 | Production of substance for friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000038458A true JP2000038458A (en) | 2000-02-08 |
Family
ID=16522563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20639098A Pending JP2000038458A (en) | 1998-07-22 | 1998-07-22 | Production of substance for friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000038458A (en) |
-
1998
- 1998-07-22 JP JP20639098A patent/JP2000038458A/en active Pending
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