JPH0625653A - Paper friction material - Google Patents
Paper friction materialInfo
- Publication number
- JPH0625653A JPH0625653A JP20605192A JP20605192A JPH0625653A JP H0625653 A JPH0625653 A JP H0625653A JP 20605192 A JP20605192 A JP 20605192A JP 20605192 A JP20605192 A JP 20605192A JP H0625653 A JPH0625653 A JP H0625653A
- Authority
- JP
- Japan
- Prior art keywords
- friction material
- paper friction
- spherical particles
- substance
- paper
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はペーパー摩擦材に関し、
特に摩擦特性と圧縮強度を向上させたものである。FIELD OF THE INVENTION The present invention relates to a paper friction material,
In particular, it has improved friction characteristics and compressive strength.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】上記ペ
ーパー摩擦材は通常油中で使用され、耐久性に優れてい
るので自動車用オートマチックミッション等に用いられ
ている。そして該摩擦材の構成材料としては、フェノー
ル樹脂等の熱硬化性樹脂と黒鉛粉，有機ダスト等の摩擦
調整剤を主成分に、有機繊維や炭素繊維等を補強材とし
てる。そしてこのペーパー摩擦材には従来から良好な耐
圧縮疲労剥離性と摩擦係数の安定性が要求されていた。
これに対しては従来から改良の検討が続けられているが
未だ十分とはいえず、さらに改良が望まれていた。2. Description of the Related Art The above-mentioned paper friction material is usually used in oil and has excellent durability, so that it is used in automatic transmissions for automobiles. As a constituent material of the friction material, a thermosetting resin such as a phenol resin and a friction modifier such as graphite powder and organic dust are used as main components, and an organic fiber or a carbon fiber is used as a reinforcing material. The paper friction material has conventionally been required to have good compression fatigue peel resistance and stability of friction coefficient.
In order to solve this problem, improvement studies have been continued, but it is still insufficient, and further improvements have been desired.
【０００３】[0003]
【課題を解決するための手段】本発明はこれに鑑み種々
検討の結果、上記要求特性を満足するペーパー摩擦材を
開発したものである。As a result of various studies in view of the above, the present invention has developed a paper friction material satisfying the above-mentioned required characteristics.
【０００４】即ち本発明は、ペーパー摩擦材材料として
球状粒子を配合したことを特徴とするものである。That is, the present invention is characterized in that spherical particles are blended as a paper friction material.
【０００５】[0005]
【作用】一般に球状物は圧縮強度が優れていることが知
られている。そこでペーパー摩擦材材料中にこの球状粒
子を配合することにより、該摩擦材に加わる圧縮応力を
該球状粒子に支持させることができるので、ペーパー摩
擦材の圧縮強度を向上させることが可能となり圧縮疲労
剥離性が改善されるものである。また球状粒子は形状的
に破壊されにくいため安定した摩擦面が得られ、ひいて
は摩擦特性が安定する。It is generally known that spherical materials have excellent compressive strength. Therefore, by mixing the spherical particles in the paper friction material, the compressive stress applied to the friction material can be supported by the spherical particles, so that it is possible to improve the compressive strength of the paper friction material. The peelability is improved. Further, since the spherical particles are less likely to be broken in shape, a stable friction surface can be obtained, which in turn stabilizes the friction characteristics.
【０００６】上記球状粒子としてはフェノール樹脂等の
有機物、炭素，シリカ等の無機物、またはこれら有機物
と無機物との混合物からなるものが良好である。そして
これら球状粒子の配合割合は５〜３０％が好ましく、５
％未満では効果が少なく、他方３０％を超えるとペーパ
ーの強度が低下してしまう。また球状粒子の配合量が多
くなるとその基材中への分散性が問題となるが、その場
合は粒子表面に短繊維やウィスカーを付着させて毛羽立
たせるようにすることで解決できる。The spherical particles are preferably made of an organic substance such as phenol resin, an inorganic substance such as carbon or silica, or a mixture of these organic substances and inorganic substances. And the compounding ratio of these spherical particles is preferably 5 to 30%, and 5
If it is less than%, the effect is small, while if it exceeds 30%, the strength of the paper decreases. Further, when the amount of the spherical particles blended increases, the dispersibility in the base material becomes a problem, but in that case, it can be solved by attaching short fibers or whiskers to the surface of the particles to make them fluff.
【０００７】[0007]
【実施例】次に本発明の実施例を説明する。フェノール
樹脂系の球状粒子を２０％配合した本発明ペーパー摩擦
材と、球状粒子を配合しない従来のペーパー摩擦材とを
作製し、油温１２０℃，面圧１２５kgf/cm2 で圧縮強度
試験を実施し、これら摩擦材に剥離が始まる際の試験サ
イクルを測定してその結果を表１に示した。EXAMPLES Examples of the present invention will be described below. A paper friction material of the present invention containing 20% of spherical particles of a phenol resin and a conventional paper friction material containing no spherical particles were prepared, and a compression strength test was conducted at an oil temperature of 120 ° C and a surface pressure of 125 kgf / cm 2. Then, the test cycle when peeling of these friction materials started was measured, and the results are shown in Table 1.
【０００８】[0008]
【表１】 [Table 1]
【０００９】次にＳＡＥ No.２テスターにより、周速２
０m/s,慣性０．０３１ kgfms2 ，面圧２０kgf/cm2 ，油
温１２０℃の条件で摩擦係数（μ）を測定し、その低下
率を算出して摩擦特性を比較した。それらの結果を表２
に示す。Then, using the SAE No. 2 tester, the peripheral speed 2
The friction coefficient (μ) was measured under the conditions of 0 m / s, inertia 0.031 kgfms 2 , surface pressure 20 kgf / cm 2 , and oil temperature 120 ° C., and the reduction rate was calculated to compare the friction characteristics. The results are shown in Table 2.
Shown in.
【００１０】[0010]
【表２】 [Table 2]
【００１１】表１および表２によれば本発明のペーパー
摩擦材は従来のペーパー摩擦材に比べて圧縮強度に優
れ、且つ摩擦係数が安定していることが判る。It can be seen from Tables 1 and 2 that the paper friction material of the present invention is superior in compressive strength to the conventional paper friction material and has a stable friction coefficient.
【００１２】[0012]
【発明の効果】このように本発明によれば、ペーパー摩
擦材の耐圧縮疲労剥離性が向上し、且つ摩擦係数が安定
する等の顕著な効果を奏する。As described above, according to the present invention, remarkable effects such as improvement in the compression fatigue peeling resistance of the paper friction material and stabilization of the friction coefficient are exhibited.
Claims (1)
合したことを特徴とするペーパー摩擦材。1. A paper friction material containing spherical particles as a material for the paper friction material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20605192A JPH0625653A (en) | 1992-07-09 | 1992-07-09 | Paper friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20605192A JPH0625653A (en) | 1992-07-09 | 1992-07-09 | Paper friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0625653A true JPH0625653A (en) | 1994-02-01 |
Family
ID=16517067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20605192A Pending JPH0625653A (en) | 1992-07-09 | 1992-07-09 | Paper friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0625653A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0703382A1 (en) | 1994-07-30 | 1996-03-27 | Sumitomo Electric Industries, Ltd. | Sintered contact component |
| US7560680B2 (en) | 2004-10-15 | 2009-07-14 | Japan Science And Technology Agency | 3D measurement sensor |
-
1992
- 1992-07-09 JP JP20605192A patent/JPH0625653A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0703382A1 (en) | 1994-07-30 | 1996-03-27 | Sumitomo Electric Industries, Ltd. | Sintered contact component |
| US7560680B2 (en) | 2004-10-15 | 2009-07-14 | Japan Science And Technology Agency | 3D measurement sensor |
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