JPH02577B2 - - Google Patents
Info
- Publication number
- JPH02577B2 JPH02577B2 JP55033581A JP3358180A JPH02577B2 JP H02577 B2 JPH02577 B2 JP H02577B2 JP 55033581 A JP55033581 A JP 55033581A JP 3358180 A JP3358180 A JP 3358180A JP H02577 B2 JPH02577 B2 JP H02577B2
- Authority
- JP
- Japan
- Prior art keywords
- friction material
- asbestos
- friction
- rusting
- based metal
- 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
- 239000002783 friction material Substances 0.000 claims description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000010425 asbestos Substances 0.000 claims description 11
- 229910052895 riebeckite Inorganic materials 0.000 claims description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 150000003016 phosphoric acids Chemical class 0.000 claims 1
- 230000000694 effects Effects 0.000 description 9
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000009472 formulation Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
〔産業上の利用分野〕
本発明は鉄系金属粒子、および／または鉄系金
属繊維を含有しかつ熱硬化性樹脂を結合材に用い
て構成されるノンアスベスト系（非石綿系）摩擦
材において、その相手摩擦材に対する発錆固着を
防止する対策を講じた摩擦材に関するものであ
る。
〔従来の技術〕
自動車用、産業機械用摩擦材において通常車両
が停止している状態では摩擦相手材と接してお
り、特に駐車ブレーキ、クラツチフエーシングに
おいては高い圧力で押し付けられている。
一方摩擦相手材は一般に鉄系金属で構成されて
いるので、この停止状態で錆が発生すると固着状
態となり操縦性を悪化させ引いては運転不能にな
ることもある。
〔発明が解決しようとする問題点〕
そこで従来のアスベスト系摩擦材における発
錆、固着を防止する対策としては摩擦材をアルカ
リ性に保つことによりかなりの効果のあることが
知られており、そのため摩擦材組成に弱アルカリ
性材料を配合することが行われている。
しかし近年注目を集めている脱石綿かつ高性能
化を意図した鉄系金属を含む摩擦材ではその発錆
固着を防止する対策として従来のアルカリ性に保
つ方法では効果が少く、特に高温多湿の地域や海
岸付近の塩害、オゾンの多い地域では全くその効
果がみられなかつた。
〔問題点を解決するための手段〕
本発明者はこの問題を解決すべく摩擦材の摩擦
性能を低下させることなく少量の添加で上記の発
錆固着を減少せしめる配合材料について種々研究
を行い本発明に至つたものである。
本発明の要旨とする所は粒子状もしくは繊維状
の鉄系金属を含みかつ熱硬化性樹脂を結合材に用
いた非石綿系摩擦材配合を加熱加圧成型してなる
ノンアスベスト系摩擦材において、上記の摩擦材
配合100重量部に対し、ホウ酸もしくはホウ酸塩
或いはリン酸もしくはリン酸塩を0.05〜6.0wt％
添加して相手摩擦材に対する発錆固着を低減せし
めたことを特徴とする摩擦材に存しこれにより所
期の目的を納めたものである。
〔作用〕
即ち本発明は鉄系金属粒子および／または鉄系
金属繊維を含有しかつ熱硬化性樹脂を結合材に用
いて構成されるノンアスベスト系摩擦材におい
て、各種材料についてこれを配合した摩擦材の摩
擦性能テスト、発錆テストを実施した結果、常に
安定した効果を示す材料としてホウ酸、リン酸又
はこれらの塩が特に好ましいことを見出してなさ
れたものである。
本発明においてホウ酸又はリン酸あるいはその
塩の添加量を摩擦材配合に対して0.05〜6.0wt％
としたのは0.05wt％未満ではその添加効果が十分
ではなく、又6.0wt％超では添加増による効果が
ないのみならず摩擦性能としても好ましくない影
響が出ることによる。
〔実施例〕
以下に本発明をその実施例によつて詳述する。
実施例 １
第１表の試料No.１〜No.５に示す配合組成（wt
％）の各材料を混合機で十分に混合した後、温度
150℃、圧力170Kg／cm2で加熱加圧成型し、得られ
た製品について発錆固着テストを実施した。
[Industrial Application Field] The present invention relates to a non-asbestos (non-asbestos) friction material containing iron-based metal particles and/or iron-based metal fibers and using a thermosetting resin as a binder. , relates to a friction material that takes measures to prevent rusting and adhesion to its mating friction material. [Prior Art] Friction materials for automobiles and industrial machinery are usually in contact with a friction partner when the vehicle is stopped, and are pressed under high pressure, especially in parking brakes and clutch facings. On the other hand, since the friction member is generally made of iron-based metal, if rust occurs in this stopped state, it will become stuck, deteriorating maneuverability and possibly making it impossible to operate. [Problem to be solved by the invention] Therefore, as a measure to prevent rusting and sticking in conventional asbestos-based friction materials, it is known that keeping the friction materials alkaline is quite effective. Slightly alkaline materials are being added to the material composition. However, with regard to friction materials containing iron-based metals intended to remove asbestos and improve performance, which have been attracting attention in recent years, the conventional method of keeping them alkaline to prevent rusting and sticking has little effect, especially in hot and humid areas. No effect was observed in areas near the coast with salt damage and high levels of ozone. [Means for Solving the Problem] In order to solve this problem, the present inventor has conducted various research on compounded materials that can reduce the above-mentioned rusting and sticking without reducing the friction performance of the friction material and has published a book. This led to the invention. The gist of the present invention is to provide a non-asbestos friction material formed by heating and press-molding a non-asbestos friction material composition containing particulate or fibrous iron-based metal and using a thermosetting resin as a binder. , 0.05 to 6.0 wt% of boric acid or borate, or phosphoric acid or phosphate to 100 parts by weight of the above friction material formulation.
This friction material is characterized in that it is added to reduce rusting and adhesion to a mating friction material, thereby achieving the intended purpose. [Function] That is, the present invention is a non-asbestos friction material that contains iron-based metal particles and/or iron-based metal fibers and is constructed using a thermosetting resin as a binder. As a result of conducting friction performance tests and rusting tests on materials, it was discovered that boric acid, phosphoric acid, or their salts are particularly preferred as materials that consistently exhibit stable effects. In the present invention, the amount of boric acid or phosphoric acid or its salt added is 0.05 to 6.0 wt% to the friction material formulation.
This is because if it is less than 0.05 wt%, the effect of its addition is not sufficient, and if it exceeds 6.0 wt%, not only will there be no effect by increasing its addition, but it will also have an unfavorable effect on friction performance. [Examples] The present invention will be explained in detail below using examples. Example 1 The compositions shown in Samples No. 1 to No. 5 in Table 1 (wt
%) After thoroughly mixing each material with a mixer, the temperature
The product was heated and press-molded at 150°C and a pressure of 170 kg/cm 2 , and a rusting fixation test was conducted on the resulting product.
【表】
また発錆固着テストは以下に示すJASO C444
−78錆付き試験方法により実施した。即ち上記の
No.１〜No.５の配合組成で得られた25×25×5tmm寸
法の試験片をそれぞれ蒸留水中に15分間浸漬し、
これを脱脂されたデイスク上に置いて１Kgｆ／cm2
（0.098MPa）の押付力で加圧し、室温にて72時間
放置後除圧し、摩擦面と平行に、ブレーキトルク
発生方向に試験片をデイスクから押しはがすもの
で、このときの剥離に要した力を固着力として求
めた。
そして、その結果を縦軸に固着力（Kgｆ／cm2）、
横軸に試料No.をプロツトした第１図に示す。
これより本発明品の試料No.２〜No.５は比較品の
試料No.１に比べ発錆固着の減少効果が顕著に認め
られた。
実施例 ２
第２表の試料No.６〜No.10について実施例１と同
様にして製品を作り発錆固着テストを実施した。
その結果を第２図に示した。[Table] Also, the rusting fixation test was performed using JASO C444 as shown below.
-78 Rust test method was used. That is, the above
Test pieces with dimensions of 25 x 25 x 5 t mm obtained with the formulations No. 1 to No. 5 were each immersed in distilled water for 15 minutes.
Place this on a degreased disk and apply 1Kgf/cm 2
(0.098MPa), and after being left at room temperature for 72 hours, the pressure is removed, and the test piece is pushed off from the disk parallel to the friction surface in the direction of brake torque generation. was determined as the adhesion force. Then, the results are expressed as the adhesion force (Kgf/cm 2 ) on the vertical axis,
This is shown in Figure 1, where the sample number is plotted on the horizontal axis. From this, samples No. 2 to No. 5 of the products of the present invention were found to have a remarkable effect of reducing rust formation and fixation compared to sample No. 1 of the comparative product. Example 2 Products were made in the same manner as in Example 1 for samples No. 6 to No. 10 in Table 2, and a rust development and fixation test was conducted.
The results are shown in Figure 2.
本発明の摩擦材は脱石綿、高性能の点から注目
されているノンアスベスト系摩擦材において、発
錆固着の減少効果に優れておりそのためこれを自
動車用、産業機械用の摩擦材に用いた場合にその
停止時、パーキング時の発錆固着対策として重要
な役割りを果すことが期待される。
The friction material of the present invention is a non-asbestos friction material that is attracting attention for its asbestos removal and high performance, and has an excellent effect of reducing rust and adhesion.Therefore, it can be used as a friction material for automobiles and industrial machinery. It is expected that it will play an important role in preventing rust from forming and sticking when stopped or parked.
第１図及び第２図は夫々実施例１及び２におけ
る比較品と本発明品の固着力を比較して示した図
表である。
縦軸……固着力（Kgｆ／cm2）、横軸……試料No.。
FIG. 1 and FIG. 2 are charts showing a comparison of the adhesion strength of the comparative products in Examples 1 and 2 and the product of the present invention, respectively. Vertical axis: Adhesion force (Kgf/cm 2 ), horizontal axis: Sample No.
Claims (1)
熱硬化性樹脂を結合材に用いた非石綿系摩擦材配
合を加熱加圧成型してなるノンアスベスト系摩擦
材において、上記の摩擦材配合100重量部に対し、
ホウ酸もしくはホウ酸塩或いはリン酸もしくはリ
ン酸塩を0.05〜6.0wt％添加して相手摩擦材に対
する発錆固着を低減せしめたことを特徴とする摩
擦材。1 In a non-asbestos friction material made by heating and press-molding a non-asbestos friction material composition containing particulate or fibrous iron-based metal and using a thermosetting resin as a binder, the above friction material composition 100 For parts by weight,
A friction material characterized in that boric acid, a boric acid salt, phosphoric acid or a phosphoric acid salt is added in an amount of 0.05 to 6.0 wt% to reduce rusting and adhesion to a mating friction material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3358180A JPS56129284A (en) | 1980-03-17 | 1980-03-17 | Friction material |
| US06/244,788 US4363884A (en) | 1980-03-17 | 1981-03-17 | Friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3358180A JPS56129284A (en) | 1980-03-17 | 1980-03-17 | Friction material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56129284A JPS56129284A (en) | 1981-10-09 |
| JPH02577B2 true JPH02577B2 (en) | 1990-01-08 |
Family
ID=12390484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3358180A Granted JPS56129284A (en) | 1980-03-17 | 1980-03-17 | Friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56129284A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6279256A (en) * | 1985-10-02 | 1987-04-11 | Sunstar Giken Kk | Resin composition |
| JPS6279282A (en) * | 1985-10-02 | 1987-04-11 | Sunstar Giken Kk | Resin composition |
| US4888368A (en) * | 1988-05-12 | 1989-12-19 | Dow Corning Corporation | Method of inhibiting the discoloration of emulsions and discoloration resistant emulsion compositions |
| JP2000256651A (en) * | 1999-03-09 | 2000-09-19 | Hitachi Chem Co Ltd | Friction material composition and friction material prepared therefrom |
-
1980
- 1980-03-17 JP JP3358180A patent/JPS56129284A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56129284A (en) | 1981-10-09 |
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