JPH0649159A - Novolac phenolic resin composition for friction material - Google Patents
Novolac phenolic resin composition for friction materialInfo
- Publication number
- JPH0649159A JPH0649159A JP20249992A JP20249992A JPH0649159A JP H0649159 A JPH0649159 A JP H0649159A JP 20249992 A JP20249992 A JP 20249992A JP 20249992 A JP20249992 A JP 20249992A JP H0649159 A JPH0649159 A JP H0649159A
- Authority
- JP
- Japan
- Prior art keywords
- phenolic resin
- average molecular
- parts
- molecular weight
- weight
- 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)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は摩擦特性に優れた摩擦材
用ノボラック型フェノール樹脂組成物に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novolac type phenolic resin composition for a friction material which has excellent friction characteristics.
【０００２】[0002]
【従来の技術】自動車、産業機械には動力の制動または
伝達のためブレーキライニング、ディスクパッド、クラ
ッチフェーシング等の摩擦材が使用されている。この摩
擦材は、一般にアスベスト、ガラス繊維、アラミド繊
維、金属繊維等の基材とカシューダスト、メラミンダス
ト、ゴムダスト等の有機添加剤及び硫酸バリウム、炭酸
カルシウム、ウォラストナイト、銅粉等の無機添加剤等
をフェノール系の樹脂で結合して作られている。この摩
擦材の評価は、高温時における摩擦係数・摩耗量・鳴き
（制動時に発生する異音）などの摩擦性能、並びに曲げ
強度・剪断強度などの機械的特性などに基づいて行われ
ている。一方、昨今の急速な交通機関の高速化に伴い、
この摩擦材に対して特に過酷な条件下での制動安定性と
鳴きの低減によるフィーリング性の向上、及び分解ガス
による悪臭の低減が強く要求されている。このような状
況下で摩擦材料の評価特性に最も大きく影響する要因は
結合剤の選択によるとされている。この結合剤として
は、耐熱性・耐摩耗性・機械的強度などの面から一般に
フェノール樹脂が使用されている。2. Description of the Related Art Friction materials such as brake linings, disc pads and clutch facings are used in automobiles and industrial machines for braking or transmitting power. This friction material is generally a base material such as asbestos, glass fiber, aramid fiber, metal fiber, etc. and organic additives such as cashew dust, melamine dust, rubber dust and inorganic additives such as barium sulfate, calcium carbonate, wollastonite and copper powder. It is made by combining agents with a phenolic resin. This friction material is evaluated based on frictional performance such as friction coefficient at high temperature, wear amount, squeal (abnormal noise generated during braking), and mechanical properties such as bending strength and shear strength. On the other hand, with the recent rapid increase in the speed of transportation,
There is a strong demand for this friction material to have improved braking stability under particularly severe conditions, improved feeling by reducing squeaking, and reduction of offensive odor due to decomposed gas. Under these circumstances, it is said that the factor that most affects the evaluation characteristics of the friction material is the selection of the binder. As the binder, a phenol resin is generally used in terms of heat resistance, abrasion resistance, mechanical strength and the like.
【０００３】またフェノール樹脂としては前記諸性能を
改善するために変性フェノール樹脂の研究が盛んに行わ
れており、柔軟性に優れる油変性フェノール樹脂・カシ
ュー変性フェノール樹脂・ゴム変性フェノール樹脂・エ
ポキシ変性フェノール樹脂・メラミン変性フェノール樹
脂などが検討されている。しかし、これらの変性フェノ
ール樹脂では、耐熱性が劣るため特に過酷な条件下での
制動安定性が得られず、鳴きが発生し不充分であった。
また、悪臭が発生し環境上の問題点もあった。さらに、
これらの変性フェノール樹脂の場合、未変性フェノール
樹脂と比べ硬化性が遅くなり、成形性・作業性が悪いと
いう難点があった。As a phenolic resin, research has been actively conducted on modified phenolic resins in order to improve the above-mentioned various performances, and oil-modified phenolic resins, cashew-modified phenolic resins, rubber-modified phenolic resins and epoxy-modifieds having excellent flexibility. Phenolic resins and melamine-modified phenolic resins are being studied. However, since these modified phenolic resins have poor heat resistance, braking stability under particularly severe conditions cannot be obtained, and squeal occurs, which is insufficient.
There was also an environmental problem due to the generation of a foul odor. further,
In the case of these modified phenolic resins, the curability is slower than that of the unmodified phenolic resin, and the moldability and workability are poor.
【０００４】[0004]
【発明が解決しようとする課題】本発明は従来の摩擦材
のこのような問題点を解決するため種々の検討の結果な
されたもので、その目的とするところは摩擦特性・作業
性・環境保全性に優れた摩擦材用ノボラック型フェノ−
ル樹脂組成物を提供することにある。SUMMARY OF THE INVENTION The present invention has been made as a result of various studies in order to solve such problems of conventional friction materials, and its purpose is to provide friction characteristics, workability and environmental protection. Novolak type phenol for friction material with excellent properties
To provide a resin composition.
【０００５】[0005]
【課題を解決するための手段】本発明は、前記問題点を
解決するために鋭意検討した結果、１核体及び２核体成
分が大きく影響することを見出し、本発明を完成するに
至った。即ち本発明は、摩擦材用組成物において、フェ
ノール樹脂成分が、フェノール類とホルムアルデヒド類
と酸性物質を必須成分として得られるノボラック型フェ
ノール樹脂であって、フェノール樹脂中の１核体成分の
含有量が１重量％以下であり、且つ２核体成分の含有量
が２重量％以下であることを特徴とする摩擦材用ノボラ
ック型フェノール樹脂組成物に関するものである。Means for Solving the Problems As a result of intensive studies for solving the above-mentioned problems, the present invention has found that mononuclear and dinuclear components have a great influence, and has completed the present invention. . That is, the present invention is a composition for friction materials, wherein the phenol resin component is a novolac type phenol resin obtained by using phenols, formaldehydes and an acidic substance as essential components, and the content of the mononuclear component in the phenol resin is To 1% by weight or less and the content of the binuclear component is 2% by weight or less, and relates to a novolac-type phenol resin composition for a friction material.
【０００６】以下、本発明について具体的に説明する。
フェノール樹脂中の１核体成分は、未反応の遊離モノマ
ー及び２−メチロールフェノール類、４−メチロールフ
ェノール類などであるが、遊離モノマーが大部分であ
る。フェノール樹脂中の２核体成分は、２,２'−ジヒド
ロキシジフェニルメタン類、２,４'−ジヒドロキシジフ
ェニルメタン類及び４,４'−ジヒドロキシジフェニルメ
タン類などである。上記フェノール樹脂中の１核体成分
の含有量は、１重量％以下が望ましく、１重量％を上回
ると硬化した摩擦材中に低分子分が多く残るため、成形
後の特にアフターキュアー時に遊離モノマーが揮発し成
形品に亀裂が生じ成形性が悪くなり、摩擦特性に悪影響
を与える。またフェノール樹脂中の２核体成分の含有量
は、２重量％以下が望ましく、２重量％を上回ると制動
時特に高温下にさらされた時に２核体成分が揮発分解
し、摩擦材表面の摩擦係数を低下させるとともに摩擦係
数の変動により鳴きが発生し、さらには揮発分解した成
分が悪臭を放ち環境を悪化させる。The present invention will be specifically described below.
The mononuclear component in the phenol resin includes unreacted free monomers, 2-methylolphenols, 4-methylolphenols, etc., but most of the free monomers. The binuclear component in the phenolic resin includes 2,2'-dihydroxydiphenylmethanes, 2,4'-dihydroxydiphenylmethanes and 4,4'-dihydroxydiphenylmethanes. The content of the mononuclear component in the above-mentioned phenol resin is preferably 1% by weight or less, and if it exceeds 1% by weight, a large amount of low-molecular components remain in the hardened friction material. Is volatilized to cause cracks in the molded product, resulting in poor moldability and adversely affecting friction characteristics. Further, the content of the binuclear component in the phenol resin is preferably 2% by weight or less, and if it exceeds 2% by weight, the binuclear component is volatilized and decomposed when exposed to high temperature during braking, and the friction material surface The friction coefficient is lowered and squeal is generated due to the fluctuation of the friction coefficient, and the volatilized and decomposed components give off a bad odor and deteriorate the environment.
【０００７】本発明において、ノボラック型フェノール
樹脂の数平均分子量は、好ましくは３００〜８００であ
る。数平均分子量が３００未満では、フェノール樹脂の
融点が低下し固結が生じやすくなる。また、８００を上
回ると樹脂の流動性が低下し不均一となり、機械的強度
が低下する。また、このノボラック型フェノール樹脂の
数平均分子量に対する重量平均分子量の比は、好ましく
は１.０〜２.０である。この比が １.０未満では、樹脂
の流動性が高過ぎて得られた摩擦材の気孔率が小さくな
り摩擦係数が低下する。また、 ２.０を上回ると得られ
た摩擦材中の樹脂の硬化度にバラツキが生じ、安定した
摩擦係数が得られなくなる。In the present invention, the number average molecular weight of the novolac type phenol resin is preferably 300 to 800. When the number average molecular weight is less than 300, the melting point of the phenol resin is lowered, and caking tends to occur. On the other hand, when it exceeds 800, the fluidity of the resin is lowered, resulting in non-uniformity, and the mechanical strength is lowered. The ratio of the weight average molecular weight to the number average molecular weight of this novolac type phenol resin is preferably 1.0 to 2.0. If this ratio is less than 1.0, the fluidity of the resin is too high, and the porosity of the obtained friction material becomes small, and the friction coefficient decreases. Further, if it exceeds 2.0, the degree of cure of the resin in the obtained friction material varies, and a stable friction coefficient cannot be obtained.
【０００８】ここでフェノール類としては、フェノー
ル、クレゾール、キシレノール、レゾルシン、カテコー
ル、ハイドロキノン、ビスフェノールＡ、ビスフェノー
ルＦ、プロペニルフェノール、ブチルフェノール、オク
チルフェノール、ノニルフェノールなどが単独又は併用
して使用される。またアルデヒド類としては、ホルムア
ルデヒド、パラホルムアルデヒド、トリオキサン、アセ
トアルデヒド、ベンズアルデヒドなどが単独又は併用し
て使用される。また触媒として用いられる酸性物質とし
ては、蓚酸、塩酸、硝酸、パラトルエンスルホン酸、酢
酸亜鉛、炭酸亜鉛、酢酸など一般にノボラック型フェノ
ール樹脂を製造する際に用いられる有機酸、無機酸又は
それ等の金属塩が単独又は併用して使用される。本発明
のノボラック型フェノール樹脂は、これらのフェノール
類、ホルムアルデヒド類及び触媒を反応釜に仕込み後、
加熱し付加縮合させた後脱水反応することにより得られ
る。特に脱水反応において減圧下で反応生成物の温度を
２２０〜３００℃まで昇温させて得られる。As the phenols, phenol, cresol, xylenol, resorcin, catechol, hydroquinone, bisphenol A, bisphenol F, propenylphenol, butylphenol, octylphenol, nonylphenol and the like are used alone or in combination. As aldehydes, formaldehyde, paraformaldehyde, trioxane, acetaldehyde, benzaldehyde and the like are used alone or in combination. Examples of the acidic substance used as a catalyst include oxalic acid, hydrochloric acid, nitric acid, p-toluenesulfonic acid, zinc acetate, zinc carbonate, acetic acid, and other organic acids commonly used in the production of novolac type phenolic resins, inorganic acids or the like. Metal salts are used alone or in combination. The novolac-type phenol resin of the present invention, after charging these phenols, formaldehydes and catalysts in a reaction kettle,
It is obtained by heating, addition-condensing, and then dehydration reaction. Particularly in the dehydration reaction, it is obtained by raising the temperature of the reaction product to 220 to 300 ° C. under reduced pressure.
【０００９】[0009]
【実施例】以下、本発明を実施例により説明する。しか
し本発明はこれらの実施例によって限定されるものでは
ない。また、実施例及び比較例に記載されている「部」
及び「％」は、すべて「重量部」及び「重量％」を示
す。 《実施例１》冷却器と撹拌機付きの反応容器に、フェノ
−ル１５００部、３７％ホルマリン７１１部、次いで蓚
酸１５部を仕込んだ。徐々に昇温して温度９５℃に達し
てから１８０分間還流反応を行った。次いで６０Torrの
減圧下で脱水反応を行い、温度が１５０℃に到達した時
より窒素ガスを吹込みながら脱水を続け、加熱を継続し
て内温を２３０℃にし、この温度で更に４時間継続し
た。次いで２０Torrの減圧下で真空脱水を１時間行った
後、反応容器より排出して常温で固形のノボラック型フ
ェノ−ル樹脂１１５０部を得た。 《実施例２》冷却器と撹拌機付きの反応容器に、フェノ
−ル１２００部、クレゾ−ル３００部、３７％ホルマリ
ン６９３部、次いで２５％塩酸水５部を仕込んだ。徐々
に昇温して温度９５℃に達してから１８０分間還流反応
を行った。次いで６０Torrの減圧下で脱水反応を行い、
温度が１５０℃に到達した時より窒素ガスを吹込みなが
ら脱水を続け、加熱を継続して内温を２３０℃にし、こ
の温度で更に４時間継続した。次いで２０Torrの減圧下
で真空脱水を１時間行った後、反応容器より排出して常
温で固形のクレゾ−ル変性ノボラック型フェノール樹脂
１１８０部を得た。EXAMPLES The present invention will be described below with reference to examples. However, the present invention is not limited to these examples. In addition, "part" described in Examples and Comparative Examples
And "%" all indicate "parts by weight" and "% by weight". Example 1 A reactor equipped with a condenser and a stirrer was charged with 1500 parts of phenol, 711 parts of 37% formalin, and then 15 parts of oxalic acid. The temperature was gradually raised, and after reaching 95 ° C., a reflux reaction was performed for 180 minutes. Then, dehydration reaction was carried out under a reduced pressure of 60 Torr, and when the temperature reached 150 ° C, the dehydration was continued while blowing nitrogen gas, heating was continued to bring the internal temperature to 230 ° C, and this temperature was continued for another 4 hours. . Then, after vacuum dehydration was performed for 1 hour under a reduced pressure of 20 Torr, the product was discharged from the reaction container to obtain 1150 parts of a solid novolak type phenol resin at room temperature. Example 2 A reactor equipped with a condenser and a stirrer was charged with 1200 parts of phenol, 300 parts of cresol, 693 parts of 37% formalin, and then 5 parts of 25% hydrochloric acid water. The temperature was gradually raised, and after reaching 95 ° C., a reflux reaction was performed for 180 minutes. Then, dehydration reaction is performed under reduced pressure of 60 Torr,
When the temperature reached 150 ° C, dehydration was continued while blowing nitrogen gas, heating was continued to bring the internal temperature to 230 ° C, and this temperature was continued for another 4 hours. Then, vacuum dehydration was carried out under a reduced pressure of 20 Torr for 1 hour, and then discharged from the reaction vessel to obtain 1180 parts of a solid cresol-modified novolac type phenol resin at room temperature.
【００１０】《実施例３》冷却器と撹拌機付きの反応容
器に、ビスフェノ−ルＡ１５００部、３７％ホルマリン
５１１部、次いで蓚酸１５部を仕込んだ。徐々に昇温し
て温度９５℃に達してから１８０分間還流反応を行っ
た。次いで６０Torrの減圧下で脱水反応を行い、温度が
１５０℃に到達した時より窒素ガスを吹込みながら脱水
を続け、加熱を継続して内温を２３０℃にし、この温度
で更に４時間継続した。次いで２０Torrの減圧下で真空
脱水を１時間行った後、反応容器より排出して常温で固
形のノボラック型フェノ−ル樹脂１３５０部を得た。 《実施例４》冷却器と撹拌機付きの反応容器に、フェノ
−ル１５００部、３７％ホルマリン９０６部、次いで蓚
酸１５部を仕込んだ。徐々に昇温して温度９５℃に達し
てから１８０分間還流反応を行った。次いで６０Torrの
減圧下で脱水反応を行い、温度が１５０℃に到達した時
より窒素ガスを吹込みながら脱水を続け、加熱を継続し
て内温を２６０℃にし、この温度で更に４時間継続し
た。次いで２０Torrの減圧下で真空脱水を３時間行った
後、反応容器より排出して常温で固形のノボラック型フ
ェノ−ル樹脂１５５０部を得た。Example 3 A reaction vessel equipped with a condenser and a stirrer was charged with 1500 parts of bisphenol A, 511 parts of 37% formalin, and then 15 parts of oxalic acid. The temperature was gradually raised, and after reaching 95 ° C., a reflux reaction was performed for 180 minutes. Then, dehydration reaction was carried out under a reduced pressure of 60 Torr, and when the temperature reached 150 ° C, the dehydration was continued while blowing nitrogen gas, heating was continued to bring the internal temperature to 230 ° C, and this temperature was continued for another 4 hours. . Then, after vacuum dehydration was performed for 1 hour under a reduced pressure of 20 Torr, the product was discharged from the reaction vessel to obtain 1350 parts of a solid novolac type phenol resin at room temperature. Example 4 A reactor having a condenser and a stirrer was charged with 1500 parts of phenol, 906 parts of 37% formalin, and then 15 parts of oxalic acid. The temperature was gradually raised, and after reaching 95 ° C., a reflux reaction was performed for 180 minutes. Then, dehydration reaction was performed under a reduced pressure of 60 Torr, and when the temperature reached 150 ° C, the dehydration was continued while blowing nitrogen gas, heating was continued to bring the internal temperature to 260 ° C, and this temperature was continued for another 4 hours. . Then, vacuum dehydration was performed for 3 hours under a reduced pressure of 20 Torr, and then discharged from the reaction vessel to obtain 1550 parts of a solid novolac type phenol resin at room temperature.
【００１１】《比較例１》冷却器と撹拌機付きの反応容
器に、フェノ−ル１５００部、３７％ホルマリン８０６
部、次いで蓚酸１５部を仕込んだ。徐々に昇温して温度
９５℃に達してから１８０分間還流反応を行った。次い
で６０Torrの減圧下で脱水反応を行い、温度２３０℃ま
で加熱した。次いで２０Torrの減圧下で真空脱水を３時
間行った後、反応容器より排出して常温で固形のノボラ
ック型フェノ−ル樹脂１３５０部を得た。 《比較例２》冷却器と撹拌機付きの反応容器に、フェノ
−ル１５００部、３７％ホルマリン８４０部、次いで蓚
酸１５部を仕込んだ。徐々に昇温して温度９５℃に達し
てから１８０分間還流反応を行った。次いで６０Torrの
減圧下で脱水反応を行い、温度が１５０℃に到達した後
反応容器より排出して常温で固形のノボラック型フェノ
−ル樹脂１４５０部を得た。Comparative Example 1 1500 parts of phenol and 37% formalin 806 were placed in a reaction vessel equipped with a condenser and a stirrer.
Parts, and then 15 parts of oxalic acid. The temperature was gradually raised, and after reaching 95 ° C., a reflux reaction was performed for 180 minutes. Then, dehydration reaction was performed under a reduced pressure of 60 Torr, and the temperature was raised to 230 ° C. Then, after vacuum dehydration was performed for 3 hours under a reduced pressure of 20 Torr, the product was discharged from the reaction vessel to obtain 1350 parts of a solid novolac type phenol resin at room temperature. Comparative Example 2 A reactor equipped with a condenser and a stirrer was charged with 1500 parts of phenol, 840 parts of 37% formalin, and then 15 parts of oxalic acid. The temperature was gradually raised, and after reaching 95 ° C., a reflux reaction was performed for 180 minutes. Then, dehydration reaction was carried out under a reduced pressure of 60 Torr, and after reaching a temperature of 150 ° C., the product was discharged from the reaction vessel to obtain 1450 parts of a novolac type phenol resin which was solid at room temperature.
【００１２】《比較例３》冷却器と撹拌機付きの反応容
器に、フェノ−ル１５００部、３７％ホルマリン７７６
部、次いで蓚酸１５部を仕込んだ。徐々に昇温して温度
９５℃に達してから１８０分間還流反応を行った。次い
で６０Torrの減圧下で脱水反応を行い、温度が２００℃
まで加熱した。更に温度２００〜２１０℃、真空度２０
Torrで１時間真空脱水を行った後、反応容器より排出て
常温で固形のノボラック型フェノ−ル樹脂１４２０部を
得た。 《比較例４》冷却器と撹拌機付きの反応容器に、フェノ
−ル１５００部、３７％ホルマリン１０３５部、次いで
蓚酸１５部を仕込んだ。徐々に昇温して温度９５℃に達
してから１８０分間還流反応を行った。次いで６０Torr
の減圧下で脱水反応を行い、温度が２００℃まで加熱し
た。更に温度２００〜２１０℃、真空度２０Torrで１時
間真空脱水を行った後、反応容器より排出て常温で固形
のノボラック型フェノ−ル樹脂１５００部を得た。Comparative Example 3 In a reaction vessel equipped with a condenser and a stirrer, 1500 parts of phenol and 37% formalin 776 were added.
Parts, and then 15 parts of oxalic acid. The temperature was gradually raised, and after reaching 95 ° C., a reflux reaction was performed for 180 minutes. Then, dehydration reaction is performed under reduced pressure of 60 Torr, and the temperature is 200 ° C.
Heated up. Further, the temperature is 200 to 210 ° C, and the degree of vacuum is 20.
After vacuum dehydration for 1 hour with Torr, the product was discharged from the reaction vessel to obtain 1420 parts of a solid novolac type phenol resin at room temperature. Comparative Example 4 A reaction vessel equipped with a condenser and a stirrer was charged with 1,500 parts of phenol, 1035 parts of 37% formalin, and then 15 parts of oxalic acid. The temperature was gradually raised, and after reaching 95 ° C., a reflux reaction was performed for 180 minutes. Then 60 Torr
The dehydration reaction was performed under reduced pressure and heated to 200 ° C. Further, after vacuum dehydration was carried out at a temperature of 200 to 210 ° C. and a vacuum degree of 20 Torr for 1 hour, it was discharged from the reaction vessel to obtain 1500 parts of a solid novolac type phenol resin at room temperature.
【００１３】実施例１、２、３、４及び比較例１、２、
３、４で得られた８種類のノボラック型フェノ−ル樹脂
について、高速液体クロマトグラフィ−による１核体成
分含有量、２核体成分含有量、数平均分子量、重量平均
分子量、分散度指数、及び東京都三点比較臭袋法による
臭気濃度を測定し、その結果を表１に示す。Examples 1, 2, 3, 4 and Comparative Examples 1, 2,
Regarding 8 kinds of novolac type phenolic resins obtained in 3 and 4, the content of mononuclear component, dinuclear component, number average molecular weight, weight average molecular weight, dispersity index by high performance liquid chromatography, and The odor concentration was measured by the Tokyo three-point comparison odor bag method, and the results are shown in Table 1.
【表１】 [Table 1]
【００１４】（臭気濃度の測定法）各フェノール樹脂
０.１ｇを各々別々にセラミックボードにのせ、ついで
３００℃に保持されたセラミックの燃焼管に各々別々に
挿入し、同時に清浄空気をキャリアーガスとして１Ｌ／
分の流量で１０分間送り、１０Ｌの清浄なサンプル袋に
分解ガスをキャリアーガスと共に補集した。このガスを
東京都三点比較臭袋法に順じ、３０倍、１００倍、３０
０倍、１０００倍、３０００倍に希釈した後、６人の測
定者がこの希釈ガスを嗅ぎ、臭気を感じる最高希釈倍率
から臭気濃度を統計的に計算して求めた。(Measurement Method of Odor Concentration) Each Phenolic Resin
0.1 g of each was placed on a ceramic board separately, and then each was separately inserted into a ceramic combustion tube maintained at 300 ° C., and at the same time, 1 L / liter of clean air was used as a carrier gas.
The decomposition gas was collected together with the carrier gas in a clean sample bag of 10 L by feeding at a flow rate of 10 minutes for 10 minutes. 30 times, 100 times, 30 times this gas according to the Tokyo three-point comparison odor bag method
After diluting 0-fold, 1000-fold and 3000-fold, 6 measurers sniffed the diluted gas and statistically calculated the odor concentration from the maximum dilution ratio at which the odor was felt.
【００１５】次に、前記８種類のノボラック型フェノ−
ル樹脂を各々別々に硬化剤と共に粉砕して粉末とし、表
２に示す配合割合で仕込み混合した。Next, the eight types of novolac type phenol
The resin was separately pulverized together with a curing agent to obtain a powder, which was charged and mixed in the mixing ratio shown in Table 2.
【表２】 この配合物を温度１６０℃、圧力２００kg／cm2 で１０
分成形した後２００℃で５時間焼成して摩擦材を作成し
た。これらのJIS D 4411に準じて摩擦試験を行い、その
結果を表３及び表４に示す。[Table 2] This compound was applied at a temperature of 160 ° C. and a pressure of 200 kg / cm 2 for 10
After minute molding, a friction material was prepared by firing at 200 ° C. for 5 hours. A friction test was conducted according to these JIS D 4411, and the results are shown in Tables 3 and 4.
【００１６】[0016]
【表３】 [Table 3]
【００１７】[0017]
【表４】 [Table 4]
【００１８】[0018]
【発明の効果】本発明によるノボラック型フェノール樹
脂組成物を使用することにより、過酷な条件での制動時
においても摩擦係数が安定し、耐摩耗性・機械的強度に
優れ、また鳴き及び臭気が低減され、自動車，鉄道車
両，航空機，産業機械等の制動部品に好適である。EFFECT OF THE INVENTION By using the novolac type phenolic resin composition according to the present invention, the friction coefficient is stable even under braking under severe conditions, the abrasion resistance and mechanical strength are excellent, and the squeal and odor are suppressed. It is reduced and suitable for braking parts for automobiles, railway vehicles, aircrafts, industrial machines and the like.
Claims (3)
脂成分が、フェノール類とホルムアルデヒド類と酸性物
質を必須成分として得られるノボラック型フェノール樹
脂であって、フェノール樹脂中の１核体成分の含有量が
１重量％以下であり、且つ２核体成分の含有量が２重量
％以下であることを特徴とする摩擦材用ノボラック型フ
ェノール樹脂組成物。1. A friction material composition, wherein the phenolic resin component is a novolac type phenolic resin obtained by using phenols, formaldehydes and an acidic substance as essential components, and the content of mononuclear component in the phenolic resin. Is 1% by weight or less, and the content of the binuclear component is 2% by weight or less, and a novolac type phenol resin composition for a friction material.
子量が３００〜８００であり、且つ数平均分子量に対す
る重量平均分子量の比が１.０〜２.０であることを特徴
とする請求項１記載の摩擦材用ノボラック型フェノール
樹脂組成物。2. The novolak type phenolic resin has a number average molecular weight of 300 to 800, and a ratio of the weight average molecular weight to the number average molecular weight is 1.0 to 2.0. A novolac type phenolic resin composition for a friction material.
り、２核体成分の含有量が２重量％以下であって、数平
均分子量が３００〜８００であり、数平均分子量に対す
る重量平均分子量の比が１.０〜２.０であることを特徴
とする摩擦材用ノボラック型フェノール樹脂。3. The content of the mononuclear component is 1% by weight or less, the content of the binuclear component is 2% by weight or less, and the number average molecular weight is 300 to 800, relative to the number average molecular weight. A novolac type phenolic resin for a friction material, which has a weight average molecular weight ratio of 1.0 to 2.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20249992A JPH0649159A (en) | 1992-07-29 | 1992-07-29 | Novolac phenolic resin composition for friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20249992A JPH0649159A (en) | 1992-07-29 | 1992-07-29 | Novolac phenolic resin composition for friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0649159A true JPH0649159A (en) | 1994-02-22 |
Family
ID=16458502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20249992A Pending JPH0649159A (en) | 1992-07-29 | 1992-07-29 | Novolac phenolic resin composition for friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0649159A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003042267A1 (en) * | 2001-11-16 | 2003-05-22 | Asahi Organic Chemicals Industry Co., Ltd. | Phenolic novolaks and process for production thereof |
| WO2005019338A1 (en) * | 2003-08-22 | 2005-03-03 | Asahi Organic Chemicals Industry Co., Ltd. | Molding material comprising phenol resin and sliding parts made from resin |
| JP2006518397A (en) * | 2003-01-17 | 2006-08-10 | トレスパ、インターナショナル、ベスローテン、フェンノートシャップ | Use of phenolic resin, phenolic resin, and products molded from it |
| US7976104B2 (en) | 2008-06-09 | 2011-07-12 | Toyota Jidosha Kabushiki Kaisha | Seat and seat control method |
| JP4951182B2 (en) * | 1999-12-27 | 2012-06-13 | ポリプラスチックス株式会社 | Flame retardant resin composition |
| CN106459557A (en) * | 2014-05-30 | 2017-02-22 | 住友电木株式会社 | Phenolic resin composition, and phenolic resin cured product |
| WO2018003513A1 (en) * | 2016-06-29 | 2018-01-04 | Dic株式会社 | Phenol novolak resin, curable resin composition, and cured product thereof |
-
1992
- 1992-07-29 JP JP20249992A patent/JPH0649159A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4951182B2 (en) * | 1999-12-27 | 2012-06-13 | ポリプラスチックス株式会社 | Flame retardant resin composition |
| WO2003042267A1 (en) * | 2001-11-16 | 2003-05-22 | Asahi Organic Chemicals Industry Co., Ltd. | Phenolic novolaks and process for production thereof |
| US7241833B2 (en) | 2001-11-16 | 2007-07-10 | Asahi Organic Chemicals Industry Co.., Ltp | Phenolic novolaks and process for production thereof |
| JP2006518397A (en) * | 2003-01-17 | 2006-08-10 | トレスパ、インターナショナル、ベスローテン、フェンノートシャップ | Use of phenolic resin, phenolic resin, and products molded from it |
| US7935778B2 (en) | 2003-01-17 | 2011-05-03 | Trespa International B.V. | Phenol resin, use of a phenol resin as well as moulded product formed therefrom |
| WO2005019338A1 (en) * | 2003-08-22 | 2005-03-03 | Asahi Organic Chemicals Industry Co., Ltd. | Molding material comprising phenol resin and sliding parts made from resin |
| JP2005097535A (en) * | 2003-08-22 | 2005-04-14 | Asahi Organic Chem Ind Co Ltd | Phenolic resin molding material and sliding part made of resin |
| JP4723822B2 (en) * | 2003-08-22 | 2011-07-13 | 旭有機材工業株式会社 | Phenol resin molding material for sliding parts production and resin sliding parts |
| US7976104B2 (en) | 2008-06-09 | 2011-07-12 | Toyota Jidosha Kabushiki Kaisha | Seat and seat control method |
| CN106459557A (en) * | 2014-05-30 | 2017-02-22 | 住友电木株式会社 | Phenolic resin composition, and phenolic resin cured product |
| US10144823B2 (en) | 2014-05-30 | 2018-12-04 | Sumitomo Bakelite Co., Ltd. | Phenolic resin composition and phenolic resin cured product |
| WO2018003513A1 (en) * | 2016-06-29 | 2018-01-04 | Dic株式会社 | Phenol novolak resin, curable resin composition, and cured product thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4427800A (en) | Phenolic resin for refractory uses | |
| US5910521A (en) | Benzoxazine polymer composition | |
| US4026867A (en) | Acid modified phenol-aldehyde resinous condensation products and friction particles therefrom | |
| JPH0649159A (en) | Novolac phenolic resin composition for friction material | |
| CZ2002394A3 (en) | Refractory mixtures with phenol coating | |
| US4419477A (en) | Powder phenolic resin composition for dry process resin-bonded felt | |
| US4420571A (en) | Phenolic friction particles | |
| JP3277810B2 (en) | Phenolic resin excellent in fast curing property and heat resistance and method for producing the same | |
| JPH0828617A (en) | Phenol resin composite for friction material | |
| EP0038689B1 (en) | Friction element | |
| JPH0874904A (en) | Resin composition for frictional material | |
| JP3075951B2 (en) | Resin composition for friction material | |
| JP2019173235A (en) | Binder for inorganic fiber product and manufacturing method therefor, manufacturing method of inorganic fiber product | |
| JPH07157748A (en) | Phenolic resin composition for frictional material | |
| JP3152883B2 (en) | Phenolic resin composition | |
| JP3522776B2 (en) | Friction material | |
| JP3460730B2 (en) | Friction material | |
| CA1182942A (en) | Phenolic resin compositions containing bisphenol type epoxy resin and novolac type epoxy resin | |
| JP2003012897A (en) | Resin composition for friction material | |
| JP2000044642A (en) | Phenol resin and phenol resin composition | |
| JPS603436B2 (en) | Adhesive composition for plywood | |
| JPH1171497A (en) | Phenol resin composition | |
| JP2001139767A (en) | Novolak-type phenol resin composition and frictional material | |
| JPH05320373A (en) | Resin composition for frictional material | |
| JP2005120122A (en) | Composition for sliding material and sliding material |