JP2003113881A - Non-asbestos friction material - Google Patents
Non-asbestos friction materialInfo
- Publication number
- JP2003113881A JP2003113881A JP2001310931A JP2001310931A JP2003113881A JP 2003113881 A JP2003113881 A JP 2003113881A JP 2001310931 A JP2001310931 A JP 2001310931A JP 2001310931 A JP2001310931 A JP 2001310931A JP 2003113881 A JP2003113881 A JP 2003113881A
- Authority
- JP
- Japan
- Prior art keywords
- friction material
- fibers
- asbestos
- fiber length
- fiber
- 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
- 239000002783 friction material Substances 0.000 title claims abstract description 49
- 239000010425 asbestos Substances 0.000 title claims abstract description 23
- 229910052895 riebeckite Inorganic materials 0.000 title claims abstract description 23
- 239000000835 fiber Substances 0.000 claims abstract description 77
- 239000000203 mixture Substances 0.000 claims abstract description 27
- 239000012784 inorganic fiber Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims description 12
- 238000005204 segregation Methods 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 229920000459 Nitrile rubber Polymers 0.000 description 5
- 229920006231 aramid fiber Polymers 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229920002972 Acrylic fiber Polymers 0.000 description 3
- 229920003043 Cellulose fiber Polymers 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000012766 organic filler Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229920000800 acrylic rubber Polymers 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 238000011417 postcuring Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 244000226021 Anacardium occidentale Species 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004113 Sepiolite Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 235000020226 cashew nut Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011346 highly viscous material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- -1 tire liquor Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車、各種産業
用機械等のブレーキパッド、ブレーキライニング及びク
ラッチフェーシング等に好適に使用される非石綿系摩擦
材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-asbestos-based friction material suitable for use in brake pads, brake linings, clutch facings, etc. of automobiles and various industrial machines.
【０００２】[0002]
【従来の技術】繊維基材、結合材、充填材の混合物であ
る摩擦材組成物は、１μｍ未満の微粒子から数ｍｍの粗
粒子である粉末原料が含まれている。また繊維もその平
均繊維長が数μｍ程度のものから数ｍｍの短繊維まで、
たとえば特開昭５６−１３１８４７には繊維長５ｍｍの
ステンレス繊維が、特開平４−１０６１８３には、チタ
ン酸カリウム繊維１０〜６０μｍ、及び０．１〜３ｍ
ｍ、また通常アラミド繊維１〜２ｍｍ、ガラス繊維３〜
５ｍｍ、銅繊維２．５〜６ｍｍ、スチール繊維２．５〜
１０ｍｍ等その平均繊維長がまちまちの繊維が配合され
ている。これらの摩擦材組成物を均一に混合することは
難しく、また均一に混合しても、計量や型投入の際の取
扱いにより、成分の一部が分離し偏析をおこしやすいと
いう問題があった。2. Description of the Related Art A friction material composition, which is a mixture of a fiber base material, a binder and a filler, contains a powder raw material which is fine particles of less than 1 μm to coarse particles of several mm. In addition, fibers with average fiber length of several μm to short fibers of several mm,
For example, in Japanese Unexamined Patent Publication No. 56-131847, stainless steel fibers having a fiber length of 5 mm are disclosed, and in Japanese Unexamined Patent Publication No. 4-106183, potassium titanate fibers are 10 to 60 μm, and 0.1 to 3 m.
m, usually aramid fiber 1-2 mm, glass fiber 3-
5 mm, copper fiber 2.5-6 mm, steel fiber 2.5-
Fibers having different average fiber lengths such as 10 mm are blended. It is difficult to uniformly mix these friction material compositions, and even if they are uniformly mixed, there is a problem in that some of the components are likely to separate and segregate due to handling during weighing and casting.
【０００３】従来、摩擦材組成物を均一に混合し、その
後の取扱いにおいて分離・偏析を防ぐ方法としては、特
許公報第２９９３３６２号にあるような湿式混合法や、
また特開平５−１５６２３５にあるように、原料として
は有機系ダストのように比重の軽い大きな粒子の分離・
偏析が注目されてきた。Conventionally, as a method of uniformly mixing the friction material composition and preventing separation / segregation in the subsequent handling, a wet mixing method as disclosed in Japanese Patent Publication No. 2933362,
Also, as disclosed in JP-A-5-156235, as a raw material, separation of large particles having a small specific gravity such as organic dust
Segregation has received attention.
【０００４】しかし、湿式混合法は作業環境上好ましく
ない有機溶剤を使用する事、たとえ水系でおこなった場
合でも混合後に加熱乾燥工程が必要となる事等の欠点が
あった。また原料に高粘性材料のコーティング処理を施
す等の方法は、経済性の問題があった。However, the wet mixing method has drawbacks such as the use of an organic solvent which is unfavorable from the working environment, and the need for a heating and drying step after mixing even if the method is carried out in an aqueous system. Further, the method of coating the raw material with a highly viscous material has a problem of economy.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記事情に鑑
みなされたもので、作業環境負荷や摩擦材組成物の加熱
乾燥工程が必要でなく、経済性も良好で、且つ摩擦材組
成物を均一に混合でき、その後の取扱いでも分離・偏析
の少ない摩擦材を提供することを課題とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, does not require a work environment load and a heating and drying step of the friction material composition, is economical, and provides a friction material composition. An object of the present invention is to provide a friction material that can be uniformly mixed and has less separation / segregation even after the subsequent handling.
【０００６】[0006]
【課題を解決するための手段】本発明者は、上記目的を
達成するため鋭意検討を行った結果、摩擦材組成物の繊
維基材に、平均繊維長が１〜６ｍｍである有機繊維を配
合し、且つ、平均繊維長が２．０ｍｍを超える金属繊維
及び／又は無機繊維を用いないことにより、上記の課題
が解決される事を知見し、本発明を完成した。Means for Solving the Problems As a result of intensive studies for achieving the above object, the present inventor has blended an organic fiber having an average fiber length of 1 to 6 mm with a fiber base material of a friction material composition. The present invention has been completed by finding that the above problems can be solved by using no metal fibers and / or inorganic fibers having an average fiber length of more than 2.0 mm.
【０００７】即ち、本発明は、摩擦材組成物の繊維基材
に、平均繊維長が１〜６ｍｍである有機繊維を含有し、
且つ、平均繊維長が２．０ｍｍを超える金属繊維及び／
又は無機繊維を含有しない非石綿系摩擦材、さらに平均
繊維長が２．０ｍｍ以下の金属繊維及び／又は無機繊維
を含有することを特徴とする非石綿系摩擦材に関する。That is, according to the present invention, the fiber base material of the friction material composition contains organic fibers having an average fiber length of 1 to 6 mm,
And metal fibers having an average fiber length of more than 2.0 mm and /
Alternatively, the present invention relates to a non-asbestos-based friction material containing no inorganic fiber, and a non-asbestos-based friction material containing an average fiber length of 2.0 mm or less and / or an inorganic fiber.
【０００８】また上記有機繊維の含有量が摩擦材組成物
中１〜１０重量％、平均繊維長が２．０ｍｍ以下の金属
繊維及び／又は無機繊維の含有量が摩擦材組成物中５〜
４０重量％であることを特徴とする非石綿系摩擦材に関
する。The content of the organic fiber is 1 to 10% by weight in the friction material composition, and the content of metal fiber and / or inorganic fiber having an average fiber length of 2.0 mm or less is 5 to 5 in the friction material composition.
It relates to a non-asbestos-based friction material characterized by being 40% by weight.
【０００９】[0009]
【発明の実施の形態】本発明の非石綿系摩擦材は、繊維
基材、結合材、充填材を主成分とする非石綿系摩擦材組
成物を成形、硬化してなるものである。BEST MODE FOR CARRYING OUT THE INVENTION The non-asbestos-based friction material of the present invention is formed by molding and curing a non-asbestos-based friction material composition containing a fiber base material, a binder and a filler as main components.
【００１０】ここで、上記繊維基材としては、石綿（ア
スベスト）以外の摩擦材に通常用いられる繊維基材が用
いられる。たとえば鉄、銅、真鍮、青銅、アルミニウム
等の金属繊維；またセラミック繊維、チタン酸カリウム
繊維、ガラス繊維、ロックウール、ウォラストナイト、
セピオライト、アタパルジャイト、人工鉱物繊維等の無
機繊維；アラミド繊維、炭素繊維、ポリイミド繊維、フ
ェノール繊維、セルロース繊維、アクリル繊維等の有機
繊維；等が挙げられる。これらは１種又は２種以上用い
ることが出来る。繊維基材の添加量は、摩擦材全体に対
して好ましくは１０〜６０重量％、より好ましくは１５
〜５０重量％である。Here, as the above-mentioned fiber base material, a fiber base material usually used for friction materials other than asbestos (asbestos) is used. Metal fibers such as iron, copper, brass, bronze, aluminum; ceramic fibers, potassium titanate fibers, glass fibers, rock wool, wollastonite,
Examples include inorganic fibers such as sepiolite, attapulgite, and artificial mineral fibers; organic fibers such as aramid fibers, carbon fibers, polyimide fibers, phenol fibers, cellulose fibers, and acrylic fibers. These may be used alone or in combination of two or more. The amount of the fiber base material added is preferably 10 to 60% by weight, more preferably 15% by weight, based on the whole friction material.
~ 50% by weight.
【００１１】特に、本発明は、平均繊維長１〜６ｍｍの
有機繊維を含み、その平均繊維長が２．０ｍｍを超える
金属繊維及び／又は無機繊維を含まないものである。In particular, the present invention includes organic fibers having an average fiber length of 1 to 6 mm, and does not include metal fibers and / or inorganic fibers having an average fiber length of more than 2.0 mm.
【００１２】本発明の有機繊維は平均繊維長が１〜６ｍ
ｍ、好ましくは１〜３ｍｍのものを用いる。有機繊維は
その平均繊維長が長すぎると、それ自身で絡み合う性質
が強くいわゆるダマになりやすい。また短すぎると、粉
末原料を抱え込み分離・偏析を防止する効果が低下す
る。有機繊維は平均繊維長が上記範囲であれば好適に使
用できるが、アラミド繊維、セルロース繊維、アクリル
繊維のようなパルプ状のものを用いることが好ましい。
含有量は摩擦材組成物中1〜１０重量％、好ましくは２
〜７重量％である。含有量が上限を超えると混合時の分
散性に問題が生じ、また下限より少ないと添加効果がな
い。The organic fiber of the present invention has an average fiber length of 1 to 6 m.
m, preferably 1 to 3 mm. When the average fiber length of the organic fiber is too long, the organic fiber has a strong property of being entangled with itself and is apt to be so-called lump. On the other hand, if it is too short, the effect of holding the powder raw material and preventing separation / segregation is lowered. Organic fibers can be preferably used as long as the average fiber length is in the above range, but it is preferable to use pulp-like fibers such as aramid fibers, cellulose fibers and acrylic fibers.
The content is 1 to 10% by weight, preferably 2 in the friction material composition.
~ 7% by weight. If the content exceeds the upper limit, the dispersibility during mixing will be problematic, and if it is less than the lower limit, the effect of addition will not be obtained.
【００１３】また、従来使用されてきた金属繊維及びウ
ィスカーを除く無機繊維の平均繊維長は２．５〜１０ｍ
ｍ程度であった。これに対し本発明は、平均繊維長が
２.０ｍｍを超える金属繊維及び／又は無機繊維を用い
ない。好ましくは平均繊維長が２．０ｍｍ以下の、より
好ましくは０．５〜２．０ｍｍの金属繊維及び／又は無
機繊維を用いる。金属繊維及び／又は無機繊維の平均繊
維長が２．０ｍｍより長くなると、有機繊維が金属繊維
及び／又は無機繊維を抱え込みにくくなり、分離・偏析
が起こりやすくなる。また平均繊維長が短か過ぎると補
強効果を得る事が出来ない。含有量は摩擦材組成物中５
〜４０重量％、好ましくは１０〜３０重量％である。含
有量が上限を超えると混合時の分散性に問題が生じ、ま
た下限より少ないと添加効果がない。The average fiber length of the inorganic fibers excluding the conventionally used metal fibers and whiskers is 2.5 to 10 m.
It was about m. On the other hand, the present invention does not use metal fibers and / or inorganic fibers having an average fiber length of more than 2.0 mm. Preferably, metal fibers and / or inorganic fibers having an average fiber length of 2.0 mm or less, more preferably 0.5 to 2.0 mm are used. When the average fiber length of the metal fibers and / or the inorganic fibers is longer than 2.0 mm, it becomes difficult for the organic fibers to hold the metal fibers and / or the inorganic fibers, and separation / segregation easily occurs. If the average fiber length is too short, the reinforcing effect cannot be obtained. Content is 5 in the friction material composition
-40% by weight, preferably 10-30% by weight. If the content exceeds the upper limit, the dispersibility during mixing will be problematic, and if it is less than the lower limit, the effect of addition will not be obtained.
【００１４】上記結合材としては、通常摩擦材に用いら
れる公知のものを使用することができる。たとえば、フ
ェノール樹脂、ＮＢＲゴム変性ハイオルソフェノール樹
脂、ＮＢＲゴム変性フェノール樹脂、メラミン樹脂、エ
ポキシ樹脂、ＮＢＲ、二トリルゴム、アクリルゴム等が
挙げられる。これらは１種又は２種以上用いることが出
来る。As the above-mentioned binder, known binders usually used for friction materials can be used. Examples thereof include phenol resin, NBR rubber-modified high orthophenol resin, NBR rubber-modified phenol resin, melamine resin, epoxy resin, NBR, nitrile rubber, and acrylic rubber. These may be used alone or in combination of two or more.
【００１５】この結合材の添加量は、摩擦材全体に対し
て好ましくは５重量％以上、より好ましくは５〜３０重
量％、更に好ましくは５〜２５重量％である。The amount of the binder added is preferably 5% by weight or more, more preferably 5 to 30% by weight, further preferably 5 to 25% by weight, based on the entire friction material.
【００１６】上記充填材としては、有機充填材と無機充
填材があり、有機充填材としては、たとえばカシューダ
スト、タイヤリク、ゴムダスト（ゴム粉末、粒）、二ト
リルゴム（加硫品）、アクリルゴムダスト（加硫品）な
どが挙げられる。これらは１種又は２種以上用いること
が出来る。この有機充填材の添加量は、摩擦材組成物全
体に対して好ましくは５〜３０重量％、より好ましくは
１０〜２５重量％である。The above-mentioned fillers include organic fillers and inorganic fillers. Examples of the organic fillers include cashew dust, tire liquor, rubber dust (rubber powder, particles), nitrile rubber (vulcanized product), acrylic rubber dust. (Vulcanized product) and the like. These may be used alone or in combination of two or more. The amount of the organic filler added is preferably 5 to 30% by weight, more preferably 10 to 25% by weight, based on the entire friction material composition.
【００１７】一方無機充填材としては、硫酸バリウム、
炭酸カルシウム、グラファイト、マイカ等の他、鉄、
銅、アルミニウム等の金属粉が挙げられる。これらは１
種又は２種以上用いることが出来る。この無機充填材
は、摩擦材組成物全体の２０〜７５重量％、より好まし
くは、３０〜６５重量％である。On the other hand, as the inorganic filler, barium sulfate,
Other than calcium carbonate, graphite, mica, iron,
Examples of the metal powder include copper and aluminum. These are 1
One kind or two or more kinds can be used. This inorganic filler is 20 to 75% by weight, and more preferably 30 to 65% by weight, based on the whole friction material composition.
【００１８】本発明の摩擦材の製造方法は、上記成分を
ヘンシェルミキサー、レディゲミキサー、アイリッヒミ
キサー等の混合機を用いて均一に混合して成形金型内で
予備成形し、この予備成形物を成形温度４１３〜４５５
Ｋ、成形圧力１０〜２５ＭＰａで、５〜１５分成形する
ものである。In the method for producing a friction material of the present invention, the above components are uniformly mixed using a mixer such as a Henschel mixer, a Loedige mixer, and an Erich mixer, and preformed in a molding die. Molding temperature 413-455
K, molding pressure is 10 to 25 MPa, and molding is performed for 5 to 15 minutes.
【００１９】次に、得られた成形品を４１３〜５２３Ｋ
の温度で２〜４８時間熱処理（後硬化）した後、必要に
応じてスプレー塗装、焼き付け、研磨処理を施して完成
品が得られる。Next, the obtained molded product is 413 to 523K.
After heat treatment (post-curing) at the temperature of 2 to 48 hours, spray coating, baking, and polishing treatments are performed as necessary to obtain a finished product.
【００２０】なお、自動車等のディスクパッドを製造す
る場合には、予め洗浄、表面処理、接着剤を塗布した鉄
又はアルミニウム製プレート上に予備成形物を載せ、こ
の状態で成形用金型内にて成形、熱処理、スプレー塗
装、焼き付け、研磨することにより製造することができ
る。When manufacturing a disc pad for an automobile or the like, the preform is placed on an iron or aluminum plate which has been washed, surface treated and coated with an adhesive in advance, and in this state is placed in a molding die. It can be manufactured by molding, heat treatment, spray coating, baking and polishing.
【００２１】本発明の非石綿系摩擦材は、自動車、大型
トラック、鉄道車両、各種産業機械等のブレーキライニ
ング、クラッチフェーシング、ディスクパッド、制輪子
等の各種用途に幅広く用いることができるものである。The non-asbestos-based friction material of the present invention can be widely used for various applications such as brake linings for automobiles, heavy trucks, railroad vehicles, various industrial machines, clutch facings, disc pads, and brake shoes. .
【００２２】次に本件発明の前記実施形態から把握でき
る請求項以外の技術思想を記載する。
（１）有機繊維はアラミド繊維、セルロース繊維、アク
リル繊維の中の１種又は２種以上を用いる、請求項１〜
３いずれか1項に記載の非石綿系摩擦材。
（２）有機繊維は、アラミド繊維である請求項１〜３い
ずれか１項に記載の非石綿系摩擦材。
（３）有機繊維はパルプ状のものを１種又は２種以上用
いる、請求項１〜３いずれか1項に記載の非石綿系摩擦
材。Next, technical ideas other than the claims that can be understood from the above-described embodiment of the present invention will be described. (1) As the organic fiber, one or more of aramid fiber, cellulose fiber, and acrylic fiber are used.
3. The non-asbestos friction material according to any one of 3 above. (2) The non-asbestos friction material according to any one of claims 1 to 3, wherein the organic fiber is an aramid fiber. (3) The non-asbestos-based friction material according to any one of claims 1 to 3, wherein one or more kinds of organic fibers are used.
【００２３】[0023]
【実施例】以下、実施例と比較例を示し、本発明を具体
的に説明するが、本発明は下記の実施例に制限されるも
のではない。EXAMPLES The present invention will be specifically described below by showing Examples and Comparative Examples, but the present invention is not limited to the following Examples.
【００２４】表１に示す組成の摩擦材組成物をレディゲ
ミキサーにて５〜２０分間混合し、加圧型内で１０ＭＰ
ａにて１分加圧して予備成形をした。この予備成形物を
成形温度４２３Ｋ、成形圧力２０ＭＰａの条件下で１０
分間成形した後、４７３Ｋで５時間熱処理（後硬化）を
行ない、塗装、焼き付け、研磨して、実施例、比較例の
乗用車用ブレーキパッドを作成した。これらのブレーキ
パッドにつき、下記条件で分析・試験をおこない、その
性能を調べた。Friction material compositions having the compositions shown in Table 1 were mixed in a Loedige mixer for 5 to 20 minutes, and 10 MP was applied in a pressure mold.
Pre-molding was performed by applying pressure for 1 minute with a. This preform is molded under the conditions of a molding temperature of 423K and a molding pressure of 20 MPa for 10 minutes.
After molding for one minute, heat treatment (post-curing) was performed at 473K for 5 hours, painting, baking, and polishing were performed to prepare brake pads for passenger cars of Examples and Comparative Examples. These brake pads were analyzed and tested under the following conditions to investigate their performance.
【００２５】（１） 蛍光Ｘ線分析（理学電機工業
（株）製：蛍光Ｘ線分析装置）
資料径：３０ｍｍ、
銅、硼素（ガラス繊維成分）の分析をおこない分散状態
を比較した。
（２） 硬度（ロックウェル硬度計）スケール：Ｓスケ
ール
資料：５０ｍｍ□
各５点の硬度を測定し平均値により分散状態を比較し
た。
（３） 曲げ強度（ＪＩＳ Ｄ４３１１に準拠した曲げ
試験）
資料：４ｍｍ×１０ｍｍ×８０ｍｍ（厚さ・巾・長さ）
各５個の試験を行ない平均値により分散状態を比較し
た。
（４） 効き（ＪＡＳＯ Ｃ ４０６に準拠したダイナ
モ試験）
１２００回制動、３００回毎の効きを測定し、摩擦係数
の最大値と最小値の差で効きの安定性を比較した。(1) Fluorescent X-ray analysis (manufactured by Rigaku Denki Kogyo Co., Ltd .: fluorescent X-ray analyzer) Material diameter: 30 mm, copper and boron (glass fiber components) were analyzed and the dispersion states were compared. (2) Hardness (Rockwell hardness meter) Scale: S scale Material: 50 mm □ The hardness of each 5 points was measured, and the dispersion state was compared by the average value. (3) Bending strength (bending test based on JIS D4311) Material: 4 mm × 10 mm × 80 mm (thickness / width / length) Five tests were conducted for each and the dispersion state was compared by the average value. (4) Efficacy (dynamo test based on JASO C 406) Efficacy was measured after braking 1200 times and every 300 times, and the stability of efficacy was compared by the difference between the maximum value and the minimum value of the friction coefficient.
【００２６】表１ Table 1
【００２７】表１の結果から分かるように、平均繊維長
１〜６ｍｍの有機繊維と、その平均繊維長が２．０ｍｍ
を超える金属繊維及び／又は無機繊維を含有しない摩擦
材は、摩擦材組成物が均一に混合されており、硬度や強
度のバラツキや摩擦性能の経時変化が少ない。As can be seen from the results in Table 1, the organic fibers having an average fiber length of 1 to 6 mm and the average fiber length of 2.0 mm
In the friction material containing no metal fibers and / or inorganic fibers exceeding 1, the friction material composition is uniformly mixed, and variations in hardness and strength and changes in friction performance over time are small.
【００２８】[0028]
【発明の効果】本発明の非石綿系摩擦材は、作業環境負
荷や成分の加熱乾燥工程が必要でなく、低コストで作る
事ができ、摩擦材組成物が均一に分散された摩擦材であ
る。INDUSTRIAL APPLICABILITY The non-asbestos-based friction material of the present invention is a friction material in which the friction material composition is uniformly dispersed, because it does not require a work environment load or a heating and drying step of components and can be produced at low cost. is there.
Claims (3)
主成分とする非石綿系摩擦材組成物を成形、硬化してな
る非石綿系摩擦材において、上記繊維基材に平均繊維長
が１〜６ｍｍである有機繊維を含有し、且つ平均繊維長
が２．０ｍｍを超える金属繊維及び／又は無機繊維を含
有しないことを特徴とする、非石綿系摩擦材。1. A non-asbestos-based friction material obtained by molding and curing a non-asbestos-based friction material composition containing a fibrous base material other than asbestos, a binder, and a filler as main components. A non-asbestos friction material comprising an organic fiber having a length of 1 to 6 mm and containing no metal fiber and / or inorganic fiber having an average fiber length of more than 2.0 mm.
０ｍｍ以下の金属繊維及び／又は無機繊維を含有するこ
とを特徴とする請求項１の非石綿系摩擦材。2. The friction material composition has an average fiber length of 2.
The non-asbestos-based friction material according to claim 1, containing 0 mm or less of metal fibers and / or inorganic fibers.
有量が摩擦材組成物中１〜１０重量％、上記平均繊維長
２．０ｍｍ以下の金属繊維及び／又は無機繊維の含有量
が摩擦材組成物中５〜４０重量％であることを特徴とす
る請求項２記載の非石綿系摩擦材。3. The friction material composition has a content of the organic fibers of 1 to 10% by weight in the friction material composition, and a content of the metal fibers and / or the inorganic fibers having an average fiber length of 2.0 mm or less. The non-asbestos-based friction material according to claim 2, which is 5 to 40% by weight in the friction material composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001310931A JP2003113881A (en) | 2001-10-09 | 2001-10-09 | Non-asbestos friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001310931A JP2003113881A (en) | 2001-10-09 | 2001-10-09 | Non-asbestos friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003113881A true JP2003113881A (en) | 2003-04-18 |
Family
ID=19129841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001310931A Pending JP2003113881A (en) | 2001-10-09 | 2001-10-09 | Non-asbestos friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003113881A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010180321A (en) * | 2009-02-05 | 2010-08-19 | Aisin Chem Co Ltd | Friction material |
| KR20130033297A (en) * | 2011-09-26 | 2013-04-03 | 닛신보 브레이크 가부시키가이샤 | Manufacturing method for a friction material |
-
2001
- 2001-10-09 JP JP2001310931A patent/JP2003113881A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010180321A (en) * | 2009-02-05 | 2010-08-19 | Aisin Chem Co Ltd | Friction material |
| KR20130033297A (en) * | 2011-09-26 | 2013-04-03 | 닛신보 브레이크 가부시키가이샤 | Manufacturing method for a friction material |
| KR101966446B1 (en) | 2011-09-26 | 2019-04-05 | 닛신보 브레이크 가부시키가이샤 | Manufacturing method for a friction material |
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