JPH0623391B2 - Non-asbestos friction material - Google Patents
Non-asbestos friction materialInfo
- Publication number
- JPH0623391B2 JPH0623391B2 JP24755685A JP24755685A JPH0623391B2 JP H0623391 B2 JPH0623391 B2 JP H0623391B2 JP 24755685 A JP24755685 A JP 24755685A JP 24755685 A JP24755685 A JP 24755685A JP H0623391 B2 JPH0623391 B2 JP H0623391B2
- Authority
- JP
- Japan
- Prior art keywords
- friction material
- asbestos
- asbestos friction
- dispersibility
- filler particles
- 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
- 239000010425 asbestos Substances 0.000 title claims description 14
- 229910052895 riebeckite Inorganic materials 0.000 title claims description 14
- 239000002783 friction material Substances 0.000 title claims description 11
- 239000002245 particle Substances 0.000 claims description 14
- 229920001971 elastomer Polymers 0.000 claims description 13
- 239000011256 inorganic filler Substances 0.000 claims description 10
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 10
- 239000012766 organic filler Substances 0.000 claims description 10
- 239000000806 elastomer Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 description 7
- 239000000428 dust Substances 0.000 description 6
- 239000005060 rubber Substances 0.000 description 6
- 244000226021 Anacardium occidentale Species 0.000 description 5
- 235000020226 cashew nut Nutrition 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- -1 accelerators Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はノンアスベスト摩擦材における配合物粒子成分
をエラストマーで処理することにより、該配合物粒子成
分の分散性を向上しかつダイピング特性を付与したノン
アスベスト摩擦材に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention improves the dispersibility of a blend particle component and imparts diping characteristics by treating the blend particle component in a non-asbestos friction material with an elastomer. It relates to non-asbestos friction materials.
ノンアスベスト系摩擦材料はアスベスト系摩擦材に比べ
配合物の分散性が悪く、特に粒度の大きい有機フィラー
粒子や無機フィラー粒子ではその傾向が大きい。The non-asbestos friction material has a poor dispersibility of the compound as compared with the asbestos friction material, and this tendency is large especially in the case of organic filler particles or inorganic filler particles having a large particle size.
即ちノンアスベスト材料はアスベスト材料に比べ繊維の
柔軟性および相互作用が少ないため、粒子の大きいフィ
ラーは繊維に保持されにくく分散性が悪くなる。又成形
物の柔軟性もアスベスト材に比べ小さいという欠点もあ
る。That is, since the non-asbestos material has less flexibility and interaction of fibers than the asbestos material, the filler having large particles is difficult to be held by the fiber and the dispersibility is deteriorated. There is also a drawback that the flexibility of the molded product is smaller than that of the asbestos material.
本発明はかかる問題点を解消するためになされたもの
で、表面がエラストマーで被覆された有機フィラー粒子
及び／又は無機フィラー粒子を含有してなることを特徴
とするノンアスベスト摩擦材を要旨としたものである。The present invention has been made in order to solve the above problems, and has as its gist a non-asbestos friction material characterized by containing organic filler particles and / or inorganic filler particles whose surface is coated with an elastomer. It is a thing.
本発明はこれらの有機、無機のフィラー粒子をエラスト
マーで処理することにより粒子表面に粘着性及びダンピ
ング性を付与してノンアスベスト材料、特にその有機フ
ィラーおよび／または無機フィラーの特性を改良したも
のである。The present invention is to improve the properties of non-asbestos materials, especially the organic filler and / or the inorganic filler by imparting tackiness and damping property to the particle surface by treating these organic and inorganic filler particles with an elastomer. is there.
そこで本発明の適用を受けたノンアスベスト材料を使用
することにより、摩擦材配合物の分散性を改善し、摩擦
材成形物の柔軟性を向上し得たものである。Therefore, by using the non-asbestos material to which the present invention is applied, the dispersibility of the friction material mixture can be improved and the flexibility of the friction material molded article can be improved.
本発明に用いられるエラストマーとは、粘着性並びにコ
ストの面からＮＢＲ系ゴム（ニトリル・ブタジエンゴ
ム）、ＳＢＲ系ゴム（スチレン・ブタジエンゴム）が適
当であり、これらは生ゴムでもよいが、耐熱性を要求さ
れる材料にはイオウ、促進剤、補強剤、（無機）充填剤
等を配合した各種配合ゴムが適している。The elastomer used in the present invention is preferably NBR rubber (nitrile / butadiene rubber) or SBR rubber (styrene / butadiene rubber) from the viewpoints of tackiness and cost. Various compounded rubbers containing sulfur, accelerators, reinforcing agents, (inorganic) fillers, etc. are suitable for the required materials.
これら各種の生ゴムまたは配合ゴムのエラストマーは５
〜３０wt％程度の溶解液として使用するのが望ましい。
これは５wt％以下では効果が少なく、３０wt％以上では
溶解粘度が高くなり作業性が悪くなるためである。Elastomers of these various raw rubbers or compounded rubbers are 5
It is desirable to use it as a solution of about 30 wt%.
This is because if it is 5 wt% or less, the effect is small, and if it is 30 wt% or more, the solution viscosity becomes high and the workability deteriorates.
本発明の適用を受ける有機フィラーとしてはカシューダ
スト、フェノールダスト等が、又無機フィラーとしては
黒鉛、シリカ、炭酸カルシウム等が挙げられる。Examples of the organic filler to which the present invention is applied include cashew dust and phenol dust, and examples of the inorganic filler include graphite, silica, calcium carbonate and the like.
有機フィラー粒子としてカシューダスト、無機フィラー
粒子として黒鉛を用い、カシューダストのみ、カシュー
ダストと黒鉛の双方を夫々ＳＢＲ系の配合ゴム溶液（溶
液濃度２０wt％）で処理し、この処理フィラーを用いて
下記配合について常法に従いノンアスベスト摩擦材製品
（実施品１，２を成型した。又比較のため無処理の有
機、無機フィラーを用いて比較品を成型し、両者の比較
テストを行った。Cashew dust is used as the organic filler particles, graphite is used as the inorganic filler particles, and only cashew dust and both cashew dust and graphite are treated with an SBR compound rubber solution (solution concentration 20 wt%). With respect to compounding, non-asbestos friction material products (implemented products 1 and 2 were molded according to a conventional method. For comparison, comparative products were molded using untreated organic and inorganic fillers, and comparative tests were performed.
有機フィラー ６０wt％ 無機フィラー １５wt％ 結 合 材 ２５wt％ その結果、比較品ではカシューダスト、黒鉛の分散不良
並びに分離が認められたのに対し、実施品ではこれらフ
ィラーの分散性は良好であった。Organic filler 60 wt% Inorganic filler 15 wt% Binder 25 wt% As a result, inferior dispersibility and separation of cashew dust and graphite were observed in the comparative product, whereas the dispersibility of these fillers was good in the implemented product.
またこれら実施品１，２の成型物および比較品の成型物
について夫々ロックウェル硬度計による硬さを測定しそ
の柔軟性の比較を行い、第１図の如き結果を得た。The hardness of each of the molded products of Examples 1 and 2 and the molded product of the comparative product were measured by a Rockwell hardness meter and their flexibility was compared, and the results shown in FIG. 1 were obtained.
以上の結果から、本発明により有機、無機フィラーに対
しエラストマー処理したものではその分散性が向上し、
成型物に柔軟性の付与されていることが判る。From the above results, the dispersibility of the organic and inorganic fillers treated with an elastomer according to the present invention is improved,
It can be seen that the molded product has flexibility.
またこの分散性の向上により摩擦材製品の強度も向上し
ており、ノンアスベスト材の特性改良効果が顕著であっ
た。Further, the strength of the friction material product is also improved by the improvement of the dispersibility, and the effect of improving the characteristics of the non-asbestos material is remarkable.
第１図は比較品と本発明の実施品の硬度を比較して示し
た図表である。FIG. 1 is a table showing the comparison of hardness between the comparative product and the product of the present invention.
Claims (1)
ラー粒子及び／又は無機フイラー粒子を含有してなるこ
とを特徴とするノンアスベスト摩擦材。1. A non-asbestos friction material comprising organic filler particles and / or inorganic filler particles whose surfaces are coated with an elastomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24755685A JPH0623391B2 (en) | 1985-11-05 | 1985-11-05 | Non-asbestos friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24755685A JPH0623391B2 (en) | 1985-11-05 | 1985-11-05 | Non-asbestos friction material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62106981A JPS62106981A (en) | 1987-05-18 |
| JPH0623391B2 true JPH0623391B2 (en) | 1994-03-30 |
Family
ID=17165247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24755685A Expired - Lifetime JPH0623391B2 (en) | 1985-11-05 | 1985-11-05 | Non-asbestos friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0623391B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07165937A (en) * | 1994-07-28 | 1995-06-27 | Honda Motor Co Ltd | Friction material |
| JP2009227706A (en) * | 2008-03-19 | 2009-10-08 | Nippon Brake Kogyo Kk | Friction material composition and friction material using it |
-
1985
- 1985-11-05 JP JP24755685A patent/JPH0623391B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62106981A (en) | 1987-05-18 |
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