JP2000178536A - Friction material - Google Patents
Friction materialInfo
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- JP2000178536A JP2000178536A JP35420698A JP35420698A JP2000178536A JP 2000178536 A JP2000178536 A JP 2000178536A JP 35420698 A JP35420698 A JP 35420698A JP 35420698 A JP35420698 A JP 35420698A JP 2000178536 A JP2000178536 A JP 2000178536A
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- friction
- friction material
- composite
- powder
- base material
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車，鉄道車
両，航空機，産業機械類等の制動装置を構成するブレー
キライニング，ディスクパッド，クラッチフェーシング
等の摺動面を構成する摩擦材の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a friction material constituting a sliding surface such as a brake lining, a disk pad, a clutch facing, etc., which constitutes a braking device for automobiles, railway vehicles, aircrafts, industrial machines and the like.
【０００２】[0002]
【従来の技術】上記制動装置の摩擦材は、基材成分を、
熱硬化性樹脂等の結合剤に分散配合した組成物を加熱加
圧下に結着成形することにより製造される。従来よりア
スベスト繊維を基材成分とする摩擦材が多く使用されて
きたが、このものは高温域での摩擦係数の安定性に難点
があり、しかもアスベスト繊維の使用は安全衛生上の問
題（発ガン性）が指摘されるなど、その代替品の開発が
要望されている。また、制動装置の小型・軽量化、制動
機能の向上のための摩擦摩耗特性の改善に対する要請が
高まり、その基材成分として、六チタン酸カリウム繊維
（K 2 Ti6 O 13）、ペロブスカイト型チタン酸カルシウ
ム（RTiO3 ）等の合成無機化合物の粉末を配合した非石
綿系摩擦材が提案されている（特開平5-139808号公報,
特開平7-53214 号公報, 特願平8-53553 号公報）。2. Description of the Related Art The friction material of the above-mentioned braking device comprises a base material component,
It is produced by binding and molding a composition that is dispersed and blended in a binder such as a thermosetting resin under heat and pressure. Conventionally, many friction materials using asbestos fibers as a base material have been used, but this one has a problem in the stability of the friction coefficient in the high temperature range, and the use of asbestos fibers causes safety and health problems. It has been pointed out that the development of alternatives to it is pointed out. In addition, there is an increasing demand for smaller and lighter braking devices and improved friction and wear characteristics to improve braking functions. As the base material component, potassium hexatitanate fiber (K 2 Ti 6 O 13 ), perovskite-type titanium is used. A non-asbestos friction material containing a powder of a synthetic inorganic compound such as calcium acidate (RTiO 3 ) has been proposed (Japanese Patent Laid-Open No. 5-139808,
Japanese Patent Application Laid-Open No. 7-53214, Japanese Patent Application No. 8-53553).
【０００３】[0003]
【発明が解決しようとする課題】自動車用ブレーキ装置
等の小型化・軽量化等の要請に応えるには、高摩擦係
数，耐摩耗性，対面損傷性等の摩擦摩耗特性をより高め
ることが必要である。本発明は、チタン酸系合成無機化
合物を基材成分とし、改良された摩擦摩耗特性を備えた
摩擦材を提供するものである。In order to meet the demands for downsizing and weight reduction of automobile brake devices and the like, it is necessary to further improve the friction and wear characteristics such as high friction coefficient, wear resistance and face-to-face damage. Is. The present invention provides a friction material containing a titanic acid-based synthetic inorganic compound as a base material component and having improved friction and wear characteristics.
【０００４】[0004]
で表されるホランダイト型オクトチタン酸塩の結晶粒と
が結合した複合結晶粒子からなる複合チタン化合物粉末
を配合されていることを特徴としている。It is characterized in that a composite titanium compound powder composed of composite crystal particles in which the crystal grains of the hollandite-type octotitanate represented by is combined.
【０００５】本発明の摩擦材は、基材成分として配合し
た粉末粒子の有する複合結晶構造の効果として、改良さ
れた摩擦摩耗特性を有する。この複合結晶粒子の一方の
化合物であるチタン酸アルカリ土類金属（ＲＴｉＯ3 ）
からなる粉末を配合して得られる摩擦材は、高速・高負
荷で高い摩擦係数（μ）となるものの、安定性に乏し
く、もう一方のオクトチタン酸塩（ＡX ＭY Ｔｉ8-Y Ｏ
16）の粉末を配合した摩擦材は、安定した高摩擦係数
（μ）を示す反面、対面損傷性に劣る。また、これら２
種の粉末の混合物を使用しも、満足し得る摩擦摩耗特性
の改善効果を得ることができない。これと異なって、両
結晶相が結合した複合結晶粒子からなる粉末を含有する
本発明の摩擦材は、高摩擦係数（μ）を安定に保持する
と共に、良好な耐摩耗性および相手攻撃性等を備えてい
る。The friction material of the present invention has improved friction and wear properties as a result of the complex crystal structure of the powder particles incorporated as the base component. Alkaline earth metal titanate (RTiO 3 ) which is one compound of the composite crystal particles
The friction material obtained by blending the powder consisting of the above has a high friction coefficient (μ) at high speed and high load, but has poor stability, and the other octotitanate (A X M Y Ti 8-Y O
The friction material mixed with the powder of 16 ) shows a stable high friction coefficient (μ), but is inferior in face damage. Also, these 2
The use of a mixture of seed powders does not give a satisfactory effect of improving friction and wear properties. In contrast to this, the friction material of the present invention containing a powder composed of composite crystal particles in which both crystal phases are bonded stably maintains a high friction coefficient (μ), and also has good wear resistance and opponent attack property. Is equipped with.
【０００６】[0006]
【発明の実施の形態】本発明の摩擦材の基材成分として
配合される粉末は、その複合結晶粒子の複合構造効果を
より明瞭に発現させるために、チタン酸アルカリ土類金
属／オクトチタン酸塩の結晶相の量比（モル比）が、１
／０．１〜１／０．２のものが好ましく使用される。複
合結晶粒子のサイズは、平均粒径約１０〜１００μｍの
範囲のものが適当である。１０μｍより微細な粒径で
は、粒子同士の凝集を生じ易く、樹脂中への均一分散が
困難となり、他方１００μｍを超える粗大粒子では、摩
擦面の相手攻撃性が大きくなる。上記粉末の摩擦材に占
める量比は、３〜５０体積％とするのがよい。これに満
たないと、配合効果が少なく、他方それを超えて増量し
ても、摩擦摩耗特性の改善効果はほぼ飽和し無駄とな
る。BEST MODE FOR CARRYING OUT THE INVENTION The powder compounded as the base material component of the friction material of the present invention has an alkaline earth metal titanate/octotitanic acid in order to more clearly express the composite structure effect of the composite crystal particles. The amount ratio (molar ratio) of the crystalline phase of the salt is 1
/0.1-1/0.2 is preferably used. The size of the composite crystal particles is appropriately in the range of an average particle size of about 10 to 100 μm. If the particle size is smaller than 10 μm, the particles tend to agglomerate, and it becomes difficult to uniformly disperse the particles in the resin. On the other hand, if the particle size is larger than 100 μm, the attacking property of the friction surface on the friction surface becomes large. The amount ratio of the powder to the friction material is preferably 3 to 50% by volume. If the amount is less than this, the compounding effect is small, and even if the amount is increased beyond that, the effect of improving the friction and wear characteristics is almost saturated and is wasted.
【０００７】本発明の摩擦材の原料組成物は、上記複合
結晶粒子（ＲＴｉＯ3 −ＡX ＭY Ｔｉ8-Y Ｏ16）からな
る複合チタン化合物粉末を配合する点を除いて、常法に
従って調製される。すなわち、熱硬化性樹脂を結合成分
とし、上記基材成分、および所望により各種繊維基材，
充填剤等を適宜配合することにより調製され、またその
結着成形加工条件にも特別の条件や制限は課せられな
い。[0007] raw material composition of the friction material of the present invention, except that blending a composite titanium compound powder composed of the composite grains (RTiO 3 -A X M Y Ti 8-Y O 16), according to a conventional method Is prepared. That is, using a thermosetting resin as a binding component, the above-mentioned base material component and, if desired, various fiber base materials,
It is prepared by appropriately mixing a filler and the like, and no special condition or limitation is imposed on the binding molding processing condition.
【０００８】結合成分は、フェノール樹脂，エポキシ樹
脂，シリコーン樹脂等の熱硬化性樹脂、またはその変性
樹脂（カシュー油変性，乾性変性，ゴム変性等）が適宜
使用される。繊維基材は、ポリアミド繊維，アラミド繊
維，フェノール繊維等の有機繊維，セラミック繊維，ガ
ラス繊維，合成無機化合物繊維（チタン酸カリウム繊維
等）の無機繊維，スチール繊維，非鉄金属繊維（黄銅，
銅，アルミニウム等）の金属繊維等であり、その１種な
いし２種以上が適宜配合される。繊維基材は、所望によ
り、分散性や樹脂結合剤との結着性を高めるための表面
処理として、シラン系カップリング剤またはチタネート
系カップリング剤によるカップリング処理を常法に従っ
て施したものが使用される。As the binding component, a thermosetting resin such as phenol resin, epoxy resin or silicone resin, or a modified resin thereof (cashew oil modified, dry modified, rubber modified, etc.) is appropriately used. The fiber base material includes organic fibers such as polyamide fiber, aramid fiber and phenol fiber, ceramic fiber, glass fiber, inorganic fiber such as synthetic inorganic compound fiber (potassium titanate fiber), steel fiber, non-ferrous metal fiber (brass,
(Copper, aluminum, etc.) and the like, and one kind or two or more kinds thereof are appropriately mixed. The fiber base material, if desired, has been subjected to a coupling treatment with a silane coupling agent or a titanate coupling agent according to a conventional method as a surface treatment for improving dispersibility or binding with a resin binder. used.
【０００９】充填剤として、加硫もしくは未加硫の天然
・合成ゴム粉末，カシュー樹脂粉粒，レジンダスト，ゴ
ムダスト等の有機物粉末，黒鉛，二硫化モリブデン，三
硫化アンチモン，硫酸バリウム，炭酸カルシウム等の無
機物粉末，銅，アルミニウム，亜鉛，鉄等の金属粉末，
アルミナ，シリカ，酸化クロム，酸化銅，酸化チタン，
酸化鉄，ジルコン等の酸化物粉末等の１種なしい２種以
上の粉末が適量配合される。この他、防錆剤，潤滑剤，
研削剤等が必要に応じて適量添加されることも、通常の
摩擦材の場合と異ならない。As a filler, vulcanized or unvulcanized natural/synthetic rubber powder, cashew resin powder, resin dust, organic powder such as rubber dust, graphite, molybdenum disulfide, antimony trisulfide, barium sulfate, calcium carbonate, etc. Inorganic powder, copper, aluminum, zinc, iron and other metal powder,
Alumina, silica, chromium oxide, copper oxide, titanium oxide,
An appropriate amount of two or more kinds of powder such as oxide powder of iron oxide and zircon is mixed. In addition, rust preventive agent, lubricant,
It is no different from the case of a normal friction material that an appropriate amount of an abrasive or the like is added.
【００１０】上記原料組成物は、冷間加圧成形等による
予備成形を施された後、加熱・加圧下の結着成形（加圧
力: 約10〜40ＭＰａ, 温度: 約150 〜200 ℃）に付さ
れ、結着成形の後、型から取り出され、必要に応じて熱
処理（温度: 約150 〜200 ℃,保持時間: 約1 〜12Ｈ
ｒ）が施され、ついで機械加工，研磨加工が加えられて
目的とする摩擦材に仕上げられる。The above raw material composition is preformed by cold pressure molding or the like and then subjected to binding molding under heat and pressure (pressure: about 10 to 40 MPa, temperature: about 150 to 200° C.). After being attached and bound and molded, it is removed from the mold and heat-treated as necessary (temperature: about 150 to 200°C, holding time: about 1 to 12H
r) is applied, and then mechanical processing and polishing processing are applied to finish the desired friction material.
【００１１】なお、本発明の基材成分として配合される
前記複合チタン酸化合物の粉末は、下記の焼成法により
製造されるものが好適に使用される。焼成原料は、二酸
化チタン（ＴｉＯ2 ），アルカリ土類金属酸化物（Ｒ
Ｏ），アルカリ金属酸化物（Ａ2 Ｏ），Ｍ元素酸化物
（Ｍ2 Ｏ3 ）等からなる混合物として調製される。各酸
化物は、加熱によりその酸化物を生成する化合物であっ
てもよい。粉末混合物に適量の水を添加してスラリーと
し、湿式噴霧乾燥処理等により、適当な粒径（約10〜10
0 μｍ）の造粒粉を得、これを焼成処理（処理温度：13
00〜1500℃）する。焼成処理で下記の結晶生成反応が生
起する。生成する各結晶相の生成量比は、原料粉末混合
物の配合量比により制御される。 TiO 2 ＋ RO → RTiO 3 (8-Y)TiO 2 + (x/2) A2 O + Y M 2 O 3 → AX M Y Ti
8-Y O 16 The powder of the composite titanate compound blended as the base material component of the present invention is preferably one produced by the following firing method. The firing raw material is titanium dioxide (TiO 2 ), alkaline earth metal oxide (R
O), alkali metal oxide (A 2 O), M element oxide (M 2 O 3 ) and the like. Each oxide may be a compound that produces the oxide by heating. An appropriate amount of water is added to the powder mixture to form a slurry, which is then subjected to a wet spray drying treatment to obtain an appropriate particle size (about 10 to 10).
Granulated powder of 0 μm) was obtained, and this was baked (processing temperature: 13
00-1500 ℃). The following crystal formation reaction occurs in the firing treatment. The production amount ratio of each crystal phase produced is controlled by the blending amount ratio of the raw material powder mixture. TiO 2 + RO → RTiO 3 (8-Y)TiO 2 + (x/2) A 2 O + YM 2 O 3 → A X M Y Ti
8-Y O 16
【００１２】上記焼成物を、軽度の解砕処理（振動ふる
い等）に付して、チタン酸アルカリ土類金属 (RTiO 3)
とオクトチタン酸塩(AX M Y Ti8-Y O 16) の結晶が結合
した複合結晶粒子の粉末を得る。上記製造工程で得られ
る複合結晶粒子を構成するRTiO 3および AX M Y Ti8-YO
16の結晶粒は微細である（RTiO 3結晶：サブミクロン
オーダ，A X M Y Ti8-YO 16結晶：数ミクロンオー
ダ）。この微細結晶粒構造は、焼成処理の結晶生成過程
で、両者の結晶成長が相互に抑制し合うことによる効果
である。この微細結晶からなる混相構造は、２種の結晶
相の複合効果を顕在化させ、特に高摩擦係数（μ）を維
持しつつ対面損傷性を緩和改善することを可能にする。
また、上記解砕処理により得られる粉末は、焼成処理に
供した造粒粉とほぼ同じ形態・サイズの球状粒子からな
る。球形状の粒子であることは、樹脂中への均一分散性
が高く、摩擦材の均質性を確保するのに有効である。The above calcined product is subjected to a slight crushing treatment (vibrating sieve, etc.) to give an alkaline earth metal titanate (RTiO 3 ).
A powder of composite crystal particles in which crystals of octotitanate (A X M Y Ti 8-Y O 16 ) are bound is obtained. RTiO 3 and A X M Y Ti 8-Y O constituting the composite crystal particles obtained in the above manufacturing process
The 16 crystal grains are fine (RTiO 3 crystal: submicron order, A X M Y Ti 8-Y O 16 crystal: several micron order). This fine crystal grain structure is an effect due to mutual inhibition of crystal growth of both in the crystal formation process of the firing treatment. The mixed phase structure composed of the fine crystals makes the composite effect of the two kinds of crystal phases manifest, and makes it possible to alleviate and improve the face-to-face damage while maintaining a high friction coefficient (μ).
The powder obtained by the above crushing treatment is composed of spherical particles having substantially the same morphology and size as the granulated powder subjected to the firing treatment. The spherical particles have high uniform dispersibility in the resin and are effective for ensuring the homogeneity of the friction material.
【００１３】[0013]
【実施例】（１）原料組成物の調製 基材成分として、表１に示す複合チタン化合物粉末を使
用し、表２の上段に示す配合量比（vol%) の原料組成物
を調製する。基材成分の粉末Ａ〜Ｅは、後記参考例によ
るものでる（平均粒径：４０μｍ）。Examples (1) Preparation of Raw Material Composition The composite titanium compound powder shown in Table 1 is used as a base material component, and a raw material composition having a compounding ratio (vol %) shown in the upper part of Table 2 is prepared. The powders A to E of the base material component are according to the reference example described later (average particle diameter: 40 μm).
【００１４】[0014]
【表１】 粉末 複合結晶粒子の構成相 結晶量比, モル比（重量比） Ａ CaTiO 3 / K 1.8 Al1.6 Ti6.4 O 16 1 / 0.14（60 / 40 ） Ｂ CaTiO 3 / K 2.2 Fe2.2 Ti5.8 O 16 1 / 0.12（60 / 40 ） Ｃ SrTiO 3 / K 1.8 Al1.6 Ti6.4 O 16 1 / 0.18（60 / 40 ） Ｄ SrTiO 3 / K 2.2 Fe2.2 Ti5.8 O 16 1 / 0.16（60 / 40 ） Ｅ CaTiO 3 / K 1.6 Zn0.8 Ti7.2 O 16 1 / 0.13（60 / 40 ）[Table 1] Constituent phases of powder composite crystal particles Crystal ratio , molar ratio (weight ratio) A CaTiO 3 / K 1.8 Al 1.6 Ti 6.4 O 16 1 / 0.14 (60 / 40) B CaTiO 3 / K 2.2 Fe 2.2 Ti 5.8 O 16 1 / 0.12 (60 / 40) C SrTiO 3 / K 1.8 Al 1.6 Ti 6.4 O 16 1 / 0.18 (60 / 40) D SrTiO 3 / K 2.2 Fe 2.2 Ti 5.8 O 16 1 / 0.16 (60 / 40 ) E CaTiO 3 / K 1.6 Zn 0.8 Ti 7.2 O 16 1 / 0.13 (60 / 40)
【００１５】（２）摩擦材の製造 原料組成物を予備成形（加圧力: １５ＭＰａ，温度: 常
温，時間: １分間）したうえ、金型による結着成形（加
圧力: １５ＭＰａ，温度: 170 ℃，加圧保持時間: ５分
間）に付し、成形後、脱型して乾燥炉で熱処理（180 ℃
に３時間保持)する。その後、所定寸法に切断し研磨加
工を加えて供試摩擦材( ディスクパッド) １〜５を得
る。(2) Manufacture of friction material The raw material composition is preformed (pressing force: 15 MPa, temperature: normal temperature, time: 1 minute), and then binding-molded by a die (pressing force: 15 MPa, temperature: 170° C.) ，Pressurizing and holding time: 5 minutes, after molding, demolding and heat treatment in a drying oven (180 ℃
Hold for 3 hours). Then, it is cut into a predetermined size and subjected to polishing to obtain test friction materials (disk pads) 1 to 5.
【００１６】比較例として、チタン酸カルシウム粉末１
（CaTiO 3 ）を配合した摩擦材（比較例１）、およびチ
タン酸カルシウム（CaTiO 3 ）粉末とオクトチタン酸塩
（K 1.8 Al1.6 Ti6.4 O 16）粉末との混合粉末２を基材
成分とする摩擦材（比較例２）を用意した。As a comparative example, calcium titanate powder 1
(CaTiO3 ) Compounded friction material (Comparative Example 1), and
Calcium titanate (CaTiO3 ) Powder and octotitanate
(K 1.8 Al1.6 Ti6.4 O16) Powder mixed with powder 2 as the base material
A friction material as a component (Comparative Example 2) was prepared.
【００１７】（３）摩擦試験 JASO C 406「乗用車ブレーキ装置ダイナモメータ試験方
法」による摩擦性能試験（第２効力試験）を行い、表２
の下段に示す結果を得た。 制動初速度: ５０Km / h,１００Km / h。 減速度 : ０．３Ｇ 相手材（ロータ）: ＦＣ２５０鋳鉄(3) Friction test A friction performance test (second effectiveness test) according to JASO C 406 "Passenger car brake device dynamometer test method" was conducted, and Table 2
The results shown below are obtained. Initial braking speed: 50km/h , 100km/h. Deceleration: 0.3G Counterpart material (rotor): FC250 cast iron
【００１８】表２に示したように、複合チタン化合物粉
末（RTiO 3 -A X M Y Ti8-Y O 16）を含有する発明例の
摩擦材は、化合物粉末１（RTiO 3単相結晶粉末）を含有
する摩擦材（比較例１）や、化合物粉末２（RTiO 3粉末
とA X M Y Ti8-Y O 16粉末との混合物）を含有する摩擦
材（比較例２）に比し、高摩擦係数（μ）と良好な耐摩
耗性，相手攻撃性にすぐれた摩擦摩耗特性を有してい
る。As shown in Table 2, the friction material of the invention example containing the composite titanium compound powder (RTiO 3 -A X M Y Ti 8-Y O 16 ) was compound powder 1 (RTiO 3 single-phase crystal powder). ) Is contained in the friction material (Comparative Example 1) and compound powder 2 (a mixture of RTiO 3 powder and A X M Y Ti 8-Y O 16 powder) is contained (Comparative Example 2), It has a high friction coefficient (μ), good wear resistance, and friction and wear characteristics with excellent opponent attack.
【００１９】[0019]
【表２】 [Table 2]
【００２０】[0020]
【参考例】（基材成分の複合チタン化合物粉末の製造）
酸化チタン（精製アナターゼ）、炭酸カリウム（Ｋ2 Ｃ
Ｏ3 ）、アルカリ土類金属炭酸塩（ＲＣＯ3 ），および
Ｍ元素酸化物の各粉末を配合し均一に混合する。混合粉
末に、２倍量（重量比）の水を加え攪拌してスラリーと
し、スプレードライヤーによる湿式噴霧乾燥処理に付
し、造粒粉（平均粒径４０μｍ）を得る。これをアルミ
ナるつぼに入れ、電気炉で焼成処理（1350℃×1Hr ）す
る。焼成物を振動ふるいで解砕し、球状粒子からなる粉
末Ａ〜Ｅを得る（平均粒子径: 約４０μｍ）。表３に、
原料の配合組成，及び得られたチタン化合物粉末の結晶
構成を示す。[Reference example] (Production of composite titanium compound powder as a base component)
Titanium oxide (purified anatase), potassium carbonate (K 2 C
O 3 ), alkaline earth metal carbonate (RCO 3 ), and M element oxide powder are mixed and uniformly mixed. To the mixed powder, double amount (weight ratio) of water is added and stirred to form a slurry, which is subjected to wet spray drying treatment by a spray dryer to obtain granulated powder (average particle size 40 μm). This is put into an alumina crucible and baked in an electric furnace (1350°C x 1 hr). The fired product is crushed with a vibration sieve to obtain powders A to E consisting of spherical particles (average particle diameter: about 40 μm). In Table 3,
The blending composition of the raw materials and the crystal structure of the obtained titanium compound powder are shown.
【００２１】[0021]
【表３】 [Table 3]
【００２２】[0022]
【発明の効果】本発明の摩擦材は、基材成分と含有する
複合チタン化合物の複合結晶構造の効果として、高摩擦
係数，耐摩耗性，対面損傷性等にすぐれた摩擦摩耗特性
を有しており、自動車，車両，航空機，各種産業機械類
の制動装置を構成するブレーキライニング，ディスクパ
ッド，クラッチフェーシング等として有用であり、制動
装置の小型化・軽量化等への対応を可能とし制動機能の
向上・安定化、耐久性の改善等に寄与するものである。EFFECTS OF THE INVENTION The friction material of the present invention has excellent friction and wear characteristics such as a high friction coefficient, wear resistance and face-to-face damage as an effect of the composite crystal structure of the composite titanium compound contained as the base material component. Therefore, it is useful as a brake lining, a disc pad, a clutch facing, etc., which constitutes a braking device for automobiles, vehicles, aircrafts, and various industrial machines, and it is possible to respond to downsizing and weight reduction of the braking device. It contributes to the improvement and stabilization of, and the improvement of durability.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 安田 雅文 兵庫県尼崎市浜１丁目１番１号 株式会社 クボタ技術開発研究所内 Ｆターム(参考） 3J058 BA01 BA41 BA55 BA67 BA76 FA01 FA11 FA21 FA24 FA31 FA35 GA02 GA22 GA82 GA92 GA93 4F071 AA03 AB20 AD06 DA01 DA02 DA05 DA11 4G047 CA06 CA07 CB04 CC03 CD03 CD07 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Masafumi Yasuda 1-1-1 Hama, Amagasaki-shi, Hyogo F-term (reference) 3K058 BA01 BA41 BA55 BA67 BA76 FA01 FA11 FA21 FA24 FA31 FA35 GA02 GA22 in Kubota Technology Development Laboratory Co., Ltd. GA82 GA92 GA93 4F071 AA03 AB20 AD06 DA01 DA02 DA05 DA11 4G047 CA06 CA07 CB04 CC03 CD03 CD07
Claims (3)
なる摩擦材において、基材成分として、 式：ＲＴｉＯ3 〔式中，Ｒは、Ｍｇ，Ｃａ, Ｓｒ，Ｂａから選ばれる１
種ないし２種以上の元素〕で表されるチタン酸アルカリ
土類金属の結晶粒と、 式： ＡX ＭY Ｔｉ8-Y Ｏ16 〔式中，Ａは、アルカリ金属元素およびＢａから選ばれ
る１種ないし２種以上の元素、Ｍは、Ａｌ, Ｆｅ，Ｃｒ
, Ｇａ，Ｍｇ，Ｃｏ，Ｎｉ，Ｃｕ，Ｚｎから選ばれる１
種ないし２種以上の元素、 X ＝０．５〜３、 Y ＝X/2 （Ｍが２価元素の場合），Y ＝X ( Ｍが３価元
素の場合 〕 で表されるホランダイト型オクトチタン酸塩の結晶粒と
が結合した複合結晶粒子からなる複合チタン化合物粉末
を配合されていることを特徴とする摩擦材。1. A friction material obtained by binding and molding a base material component with a thermosetting resin, wherein the base material component is of the formula: RTiO 3 [wherein R is selected from Mg, Ca , Sr and Ba] 1
Crystal grains of alkaline earth metal titanate represented by one or more elements] and the formula: A X M Y Ti 8-Y O 16 [wherein A is selected from alkali metal elements and Ba] One or more elements, M is Al , Fe, Cr
, Ga, Mg, Co, Ni, Cu, Zn 1
Hollandite type octo represented by one or more elements, X = 0.5 to 3, Y = X/2 (when M is a divalent element), Y = X (when M is a trivalent element) A friction material comprising a composite titanium compound powder composed of composite crystal particles in which crystal grains of a titanate are bonded.
は、チタン酸アルカリ土類金属の結晶／オクトチタン酸
塩の結晶の量比（モル比）が、１／０．１〜１／０．２
である請求項１に記載の摩擦材。2. The composite crystal particles of the composite titanium compound powder have an amount ratio (molar ratio) of alkaline earth metal titanate crystals/octotitanate crystals of 1/0.1 to 1/0.2.
The friction material according to claim 1, wherein
は、平均粒径１０〜１００μｍである請求項１又は請求
項２に記載の摩擦材。3. The friction material according to claim 1, wherein the composite crystal particles of the composite titanium compound powder have an average particle size of 10 to 100 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35420698A JP2000178536A (en) | 1998-12-14 | 1998-12-14 | Friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35420698A JP2000178536A (en) | 1998-12-14 | 1998-12-14 | Friction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000178536A true JP2000178536A (en) | 2000-06-27 |
Family
ID=18436005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35420698A Pending JP2000178536A (en) | 1998-12-14 | 1998-12-14 | Friction material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000178536A (en) |
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|---|---|---|---|---|
| JP2007246966A (en) * | 2006-03-15 | 2007-09-27 | Toho Titanium Co Ltd | Method for producing sheet-shaped porous body |
| JP2008094643A (en) * | 2006-10-06 | 2008-04-24 | Kubota Corp | Composite titanium oxide compound and friction material containing its powder |
| WO2008108197A1 (en) * | 2007-03-02 | 2008-09-12 | Otsuka Chemical Co., Ltd. | Titanate having alkali metal titanate bonded thereto, process for producing the same, and resin composition containing titanate having alkali metal titanate bonded thereto |
| WO2012022027A1 (en) * | 2010-08-17 | 2012-02-23 | 南京钛威科技有限公司 | Copper-free ceramic friction material and preparation method thereof |
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-
1998
- 1998-12-14 JP JP35420698A patent/JP2000178536A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4610501B2 (en) * | 2006-03-15 | 2011-01-12 | 東邦チタニウム株式会社 | Method for producing sheet-like porous body |
| JP2007246966A (en) * | 2006-03-15 | 2007-09-27 | Toho Titanium Co Ltd | Method for producing sheet-shaped porous body |
| JP2008094643A (en) * | 2006-10-06 | 2008-04-24 | Kubota Corp | Composite titanium oxide compound and friction material containing its powder |
| KR101461248B1 (en) * | 2007-03-02 | 2014-11-12 | 오츠카 가가쿠 가부시키가이샤 | Titanate having alkali metal titanate bonded thereto, process for producing the same, and resin composition containing titanate having alkali metal titanate bonded thereto |
| JP2008214124A (en) * | 2007-03-02 | 2008-09-18 | Otsuka Chemical Co Ltd | Titanic acid alkali metal salt-stuck titanate, its production method, and resin composition containing titanic acid alkali metal salt-stuck titanate |
| WO2008108197A1 (en) * | 2007-03-02 | 2008-09-12 | Otsuka Chemical Co., Ltd. | Titanate having alkali metal titanate bonded thereto, process for producing the same, and resin composition containing titanate having alkali metal titanate bonded thereto |
| WO2012022027A1 (en) * | 2010-08-17 | 2012-02-23 | 南京钛威科技有限公司 | Copper-free ceramic friction material and preparation method thereof |
| WO2014185307A1 (en) * | 2013-05-15 | 2014-11-20 | 大塚化学株式会社 | Friction material and friction material for use in drum brake |
| JP2014224175A (en) * | 2013-05-15 | 2014-12-04 | 大塚化学株式会社 | Friction material and friction material for use in drum brake |
| EP3130816A1 (en) * | 2015-04-27 | 2017-02-15 | Akebono Brake Industry Co., Ltd. | Friction material composition, friction material and production method thereof |
| US10323708B2 (en) | 2015-04-27 | 2019-06-18 | Akebono Brake Industry Co., Ltd. | Friction material composition, friction material and production method thereof |
| CN108821789A (en) * | 2018-07-30 | 2018-11-16 | 界首市鑫全龙粮食机械购销有限公司 | A kind of cornmill low-temperature sintered ceramics mill ball |
| CN108821753A (en) * | 2018-07-30 | 2018-11-16 | 界首市鑫全龙粮食机械购销有限公司 | A kind of wear-resisting mill ball of cornmill |
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