JPH0723463B2 - Friction material - Google Patents
Friction materialInfo
- Publication number
- JPH0723463B2 JPH0723463B2 JP16096390A JP16096390A JPH0723463B2 JP H0723463 B2 JPH0723463 B2 JP H0723463B2 JP 16096390 A JP16096390 A JP 16096390A JP 16096390 A JP16096390 A JP 16096390A JP H0723463 B2 JPH0723463 B2 JP H0723463B2
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- friction material
- phenol
- phenylphenol
- material according
- 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.)
- Expired - Lifetime
Links
Landscapes
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】 《産業上の利用分野》 この発明は摩擦材に関し、特に耐フェード性に優れた自
動車用ブレーキパッドに好適な摩擦材に関する。TECHNICAL FIELD The present invention relates to a friction material, and particularly to a friction material having excellent fade resistance and suitable for a brake pad for an automobile.
《従来の技術》 従来より、自動車用ブレーキパッドには、金属繊維，ガ
ラス繊維，セラミック繊維等を基材とし、この基材に充
填剤および結合剤を混合した摩擦材が用いられており、
結合剤にはフェノール樹脂が使用されている。<< Prior Art >> Conventionally, a brake pad for an automobile has a friction material in which a metal fiber, glass fiber, ceramic fiber or the like is used as a base material, and a filler and a binder are mixed with the base material.
Phenolic resin is used as the binder.
《発明が解決しようとする課題》 しかしながら、上記の如き従来の摩擦材にあっては、結
合剤としてフェノール樹脂を用いているので、耐熱性を
考慮する場合、ストレートないしはフェノール基間に反
応基を持たないベンゼン核を主体とする必要があり、こ
の場合架橋密度が高くマトリックスがしっかりしている
ため硬度が高くなり、耐フェード性が低下するという不
具合があった。<Problems to be Solved by the Invention> However, in the conventional friction material as described above, since a phenol resin is used as a binder, when heat resistance is taken into consideration, a reactive group may be formed between straight or phenol groups. It is necessary to have benzene nuclei that do not have as a main component, and in this case, since the crosslink density is high and the matrix is solid, the hardness is high and the fade resistance is lowered.
また、結合剤としてはカシュー，オイル，ゴム等の変性
樹脂を使用することもできるが、この場合柔軟性には優
れるものの耐熱性に劣るという不具合があった。Further, a modified resin such as cashew, oil or rubber can be used as the binder, but in this case, there is a problem in that it is excellent in flexibility but inferior in heat resistance.
一方、耐フェード性を向上するために、樹脂の配合量を
減じ、充填剤の合量を増やすことも考えられるが、この
方法ではブレーキパッドの摩耗増を招来するとともに、
ブレーキ効き安定性が低下したり、ノイズが発生すると
いう不具合あった。On the other hand, in order to improve the fade resistance, it is possible to reduce the amount of resin compounded and increase the total amount of filler, but this method causes increased wear of the brake pad and
There was a problem that the braking effectiveness decreased and noise was generated.
この発明は、上記の如き従来の課題に鑑みてなされたも
ので、その目的とするところは、結合剤として耐熱性に
優れたｐ−フェニルフェノールとフェノールの共重合体
樹脂を使用し、耐熱性および耐フェード性に優れた摩擦
材を提供することにある。The present invention has been made in view of the conventional problems as described above, and an object thereof is to use a copolymer resin of p-phenylphenol and phenol having excellent heat resistance as a binder, And to provide a friction material having excellent fade resistance.
《課題を解決するための手段》 この発明は、上記目的を達成するめに、耐熱性樹脂を結
合剤、補強繊維を基材とし、黒鉛，金，硫酸バリウム，
水酸化カルシウム等を充填剤としてなる摩擦材におい
て、前記耐熱性樹脂はｐ−フェニルフェノールとフェノ
ールの共重合体樹脂であることを特徴とする。<Means for Solving the Problems> In order to achieve the above object, the present invention uses a heat-resistant resin as a binder and a reinforcing fiber as a base material, and is made of graphite, gold, barium sulfate,
In the friction material using calcium hydroxide as a filler, the heat resistant resin is a copolymer resin of p-phenylphenol and phenol.
《作用》 この発明では、結合剤として耐熱性に優れたｐ−フェニ
ルフェノール樹脂を使うので、高温，高負荷時の摩擦係
数が安定する。<< Operation >> In the present invention, since the p-phenylphenol resin having excellent heat resistance is used as the binder, the friction coefficient is stable under high temperature and high load.
《実施例》 以下にこの発明の実施例を示すが、これは例示であり、
これによっ本発明は何等限定されるものではない。<< Examples >> Examples of the present invention will be shown below, but these are examples.
The present invention is not limited thereby.
まず、結合剤であるｐ−フェニルフェノールとフェノー
ルの共重合体樹脂は、ｐ−フェニルフェノールとフェノ
ールをモル比１対１で、アルカリ触媒であるアンモニア
を用い、ホルムアルデヒドと共重合反応し縮合すること
で得られる。First, the binder resin of p-phenylphenol and phenol is a copolymer of p-phenylphenol and phenol at a molar ratio of 1: 1 using ammonia as an alkali catalyst and undergoing a copolymerization reaction with formaldehyde to condense. Can be obtained at.
次に、この樹脂を結合剤とし、基材のスチール繊維およ
び黒鉛その他の充填剤を次表に示す体積比（％）に従っ
配合し、これを均一に混練する。Next, using this resin as a binder, steel fibers of the base material and graphite and other fillers are compounded according to the volume ratio (%) shown in the following table, and this is uniformly kneaded.
次に、上記複合材料を金型に充填し、温度150℃，圧力5
00Kg/cm2で圧縮成形する。 Next, the above-mentioned composite material is filled in a mold, and the temperature is 150 ° C and the pressure is 5
It is compression molded at 00Kg / cm 2 .
できた成形品を200℃で４時間、所定条件によりアフタ
ーケアを施した。The formed product was subjected to aftercare at 200 ° C for 4 hours under predetermined conditions.
第１図は、上記の如くして得られ摩擦材と従来例の摩擦
材を自動車用ブレーキパッドに使用した場合のフェード
試験の比較図で、Ａは本実施例によって得られた摩擦
材、Ｂは従来例の摩擦材の制動回数に対する摩擦係数を
示している。FIG. 1 is a comparison diagram of a fade test when the friction material obtained as described above and the friction material of the conventional example are used for a brake pad for an automobile. A is the friction material obtained by this embodiment, and B is the friction material. Indicates the friction coefficient of the conventional friction material with respect to the number of times of braking.
同図に示す如く、本実施例では耐熱性に優れたｐ−フェ
ニルフェノールとフェノールの共重合樹脂を結合剤とし
て用いているので、従来の如く一般のフェノール樹脂の
みを結合剤として用いた場合に比して摩擦係数が高く、
安定した、耐フェード性に優れた自動車用ブレーキパッ
ドが得られることが判る。As shown in the figure, in this example, since a copolymer resin of p-phenylphenol and phenol having excellent heat resistance was used as the binder, when only a general phenol resin was used as the binder as in the conventional case. The friction coefficient is higher than
It can be seen that a stable brake pad for automobiles having excellent fade resistance can be obtained.
なお、本実施例ではｐ−フェニルフェノールとフェノー
ルの共重合体樹脂はアルカルを触媒として合成されてい
るが、酸を触媒として合成することもできる。Although the copolymer resin of p-phenylphenol and phenol was synthesized using alcal as a catalyst in this example, it may be synthesized using an acid as a catalyst.
また、補強繊維としてはスチール繊維のほか、アルミ繊
維，銅繊維，黄銅繊維，亜鉛繊維，ニッケル繊維，クロ
ム繊維等の金属繊維を用いることもできる。Further, as the reinforcing fiber, in addition to steel fiber, metal fiber such as aluminum fiber, copper fiber, brass fiber, zinc fiber, nickel fiber, chrome fiber and the like can be used.
また、ガラス繊維，セラミック繊維等の無機繊維を補強
繊維として使用することもできる。Further, inorganic fibers such as glass fibers and ceramic fibers can also be used as the reinforcing fibers.
さらに、アラミッド繊維，アクリル繊維等の有機繊維を
補強繊維として使用することもできる。Furthermore, organic fibers such as aramid fibers and acrylic fibers can also be used as reinforcing fibers.
《発明の効果》 本発明に係る摩擦材は、上記の如く、耐熱性樹脂を結合
剤、補強繊維を基材として、黒鉛，金属粉，硫酸バリウ
ム，水酸カルシウム等を充填剤としてなる摩擦材におい
て、前記耐熱性樹脂はｐ−フェニルフェノールとフェノ
ールの共重合体樹脂であるので、耐熱性および耐フェー
ド性に優れた摩擦材を得ることができることになる。<< Effects of the Invention >> As described above, the friction material according to the present invention comprises a heat-resistant resin as a binder, a reinforcing fiber as a base material, and graphite, metal powder, barium sulfate, calcium hydroxide, or the like as a filler. In the above, since the heat resistant resin is a copolymer resin of p-phenylphenol and phenol, a friction material having excellent heat resistance and fade resistance can be obtained.
第１図は本実施例によって得られた摩擦材と従来例にお
ける摩擦材の制動回数に対する摩擦係数の説明図であ
る。 Ａ……本実施例によって得られた摩擦材の摩擦係数特性
図 Ｂ……従来例における摩擦材の摩擦係数特性図FIG. 1 is an explanatory diagram of the friction coefficient with respect to the number of braking times of the friction material obtained in this example and the friction material in the conventional example. A: Friction coefficient characteristic diagram of friction material obtained in this example B: Friction coefficient characteristic chart of friction material in conventional example
Claims (6)
て、黒鉛，金属粉，硫酸バリウム，水酸化カルシウム等
を充填剤としてなる摩擦材において、前記耐熱性樹脂は
ｐ−フェニルフェノールとフェノールの共重合体樹脂で
あることを特徴とする摩擦材。1. A friction material comprising a heat-resistant resin as a binder and a reinforcing fiber as a base material and graphite, metal powder, barium sulfate, calcium hydroxide or the like as a filler, wherein the heat-resistant resin is p-phenylphenol. A friction material, which is a copolymer resin of phenol.
重合体樹脂が酸を触媒として合成されることを特徴とす
る請求項１記載の摩擦材。2. The friction material according to claim 1, wherein the copolymer resin of p-phenylphenol and phenol is synthesized by using an acid as a catalyst.
重合体樹脂がアルカリを触媒として合成されることを特
徴とする請求項１記載の摩擦材。3. The friction material according to claim 1, wherein a copolymer resin of p-phenylphenol and phenol is synthesized by using an alkali as a catalyst.
繊維，黄銅繊維，亜鉛繊維，ニッケル繊維，クロム繊維
等の金属繊維であることを特徴とする請求項１記載の摩
擦材。4. The friction material according to claim 1, wherein the reinforcing fibers are metal fibers such as steel fibers, aluminum fibers, copper fibers, brass fibers, zinc fibers, nickel fibers, and chromium fibers.
の無機繊維であることを特徴とする請求項１記載の摩擦
材。5. The friction material according to claim 1, wherein the reinforcing fibers are inorganic fibers such as glass fibers and ceramic fibers.
等の有機繊維であることを特徴とする請求項１記載の摩
擦材。6. The friction material according to claim 1, wherein the reinforcing fibers are organic fibers such as aramid fibers and acrylic fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16096390A JPH0723463B2 (en) | 1990-06-19 | 1990-06-19 | Friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16096390A JPH0723463B2 (en) | 1990-06-19 | 1990-06-19 | Friction material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0450284A JPH0450284A (en) | 1992-02-19 |
| JPH0723463B2 true JPH0723463B2 (en) | 1995-03-15 |
Family
ID=15725965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16096390A Expired - Lifetime JPH0723463B2 (en) | 1990-06-19 | 1990-06-19 | Friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0723463B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763366A (en) * | 2017-01-13 | 2017-05-31 | 安徽丰汇车业配件有限公司 | A kind of brake-pad friction block of stay in grade |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113215823A (en) * | 2021-05-17 | 2021-08-06 | 浙江科特汽配有限公司 | Aramid core-spun yarn plied yarn suitable for clutch facing and preparation method thereof |
-
1990
- 1990-06-19 JP JP16096390A patent/JPH0723463B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763366A (en) * | 2017-01-13 | 2017-05-31 | 安徽丰汇车业配件有限公司 | A kind of brake-pad friction block of stay in grade |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0450284A (en) | 1992-02-19 |
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