JP2003012897A - Resin composition for friction material - Google Patents
Resin composition for friction materialInfo
- Publication number
- JP2003012897A JP2003012897A JP2001194412A JP2001194412A JP2003012897A JP 2003012897 A JP2003012897 A JP 2003012897A JP 2001194412 A JP2001194412 A JP 2001194412A JP 2001194412 A JP2001194412 A JP 2001194412A JP 2003012897 A JP2003012897 A JP 2003012897A
- Authority
- JP
- Japan
- Prior art keywords
- phenol
- resin
- aromatic hydrocarbon
- substituted aromatic
- friction material
- 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
Landscapes
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、使用時の耐フェー
ド特性に優れる自動車用の摩擦材用組成物に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction material composition for automobiles, which is excellent in fade resistance during use.
【０００２】[0002]
【従来の技術】近年、自動車の高速度化に伴い、使用す
るブレーキの特性向上が望まれている。特に、制動を繰
り返した際の制動特性の劣化を防ぐことは、安全性を高
める上で重要である。従来、自動車用ブレーキパッドに
は、金属繊維、ガラス繊維、セラミック繊維等を基材と
し、この基材に充填剤および結合剤を混合した摩擦材が
用いられており、結合剤にはフェノール樹脂が用いられ
ている。例えば、特開平０１−１５００３３号公報及び
特開平０６−１８４５２３号公報にはアルキル変性フェ
ノール樹脂を用いた摩擦材組成物の開示がある。2. Description of the Related Art In recent years, as the speed of automobiles has increased, it has been desired to improve the characteristics of brakes used. In particular, it is important to prevent the deterioration of the braking characteristics when the braking is repeated, in order to improve safety. Conventionally, a friction material in which a filler and a binder are mixed with a base material of a metal fiber, a glass fiber, a ceramic fiber, etc. is used for an automobile brake pad, and a phenol resin is used as the binder. It is used. For example, JP-A-01-150033 and JP-A-06-184523 disclose a friction material composition using an alkyl-modified phenol resin.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記の
デイスクブレーキパッドやブレーキライニング等の摩擦
材の結合剤に用いられるフェノール樹脂は、更に優れた
耐熱性が要求される。このために、フェノール樹脂の分
子構造骨格のフェノール基間に直接結合或いは反応基を
持たないベンゼン核を組み入れる樹脂変性が必要とな
る。しかし、この手段によってもマトリックスがしっか
りしているため高温での弾性率が高くなり、耐フェード
性が低下する課題があった。また、カシュー、オイル、
ゴム等の変性フェノール樹脂を使用した場合には柔軟性
は優れているが、耐熱性が劣る課題があった。一方、耐
フェード性を向上する方法としては、摩擦材組成物の樹
脂の配合量を減らして充填剤の配合量を増やす手段があ
る。しかし、この方法は摩擦材の磨耗量が増大する、ブ
レーキの効きの安定性が低下する、ノイズ（ブレーキ制
動蒔の騒音）が発生する等の問題があった。本発明の目
的は、補強繊維の結合剤にフェノール変性アルキル置換
芳香族炭化水素樹脂を使用し、耐フェード性、耐熱性に
優れた摩擦材用樹脂組成物及びそれを用いた摩擦材を提
供することにある。However, the phenol resin used as the binder of the friction material such as the above-mentioned disc brake pad or brake lining is required to have further excellent heat resistance. For this reason, it is necessary to modify the resin by incorporating a benzene nucleus having no direct bond or a reactive group between the phenol groups of the molecular structure skeleton of the phenol resin. However, even by this means, the matrix is firm, so that the elastic modulus at high temperature becomes high, and there is a problem that the fade resistance is lowered. Also, cashew, oil,
When a modified phenolic resin such as rubber is used, the flexibility is excellent, but the heat resistance is inferior. On the other hand, as a method of improving the fade resistance, there is a means of decreasing the compounding amount of the resin of the friction material composition and increasing the compounding amount of the filler. However, this method has problems that the amount of wear of the friction material is increased, the stability of the braking effectiveness is reduced, and noise (noise of brake braking) is generated. An object of the present invention is to provide a resin composition for a friction material, which uses a phenol-modified alkyl-substituted aromatic hydrocarbon resin as a binder of a reinforcing fiber, and is excellent in fade resistance and heat resistance, and a friction material using the same. Especially.
【０００４】[0004]
【課題を解決するための手段】本発明の要旨は以下のと
おりである。
［１］フェノール変性アルキル置換芳香族炭化水素樹脂
と補強繊維を含む摩擦材用樹脂組成物であって、該フェ
ノール変性アルキル置換芳香族炭化水素樹脂中のアルキ
ル置換芳香族核とフェノール核の割合が、５：９５〜７
５：２５であり、前記フェノール変性アルキル置換芳香
族炭化水素樹脂の硬化剤がヘキサメチレンテトラミンで
ある摩擦材用樹脂組成物である。
［２］前記の項「１」において、フェノール変性アルキ
ル置換芳香族炭化水素樹脂が、フェノール変性キシレン
樹脂である摩擦材用樹脂組成物である。
［３］前記の項「１」において、フェノール変性アルキ
ル置換芳香族炭化水素樹脂が、アルキル置換芳香族炭化
水素ホルムアルデヒド樹脂に、フェノール性水酸基を有
する化合物、又はフェノール性水酸基を有する化合物と
ホルマリンを反応させて得られる合成物である摩擦材用
樹脂組成物である。
［４］前記の項「１」において、フェノール変性アルキ
ル置換芳香族炭化水素樹脂が、アルキル置換芳香族炭化
水素ホルムアルデヒド樹脂に、フェノールと分子中に２
個以上のフェノール性水酸基を有する化合物の混合系
に、必要によりホルマリンを反応させて得られる合成物
である摩擦材用樹脂組成物である。
［５］前記の項「１」において、アルキル置換芳香族炭
化水素が、トルエン、キシレン、メシチレン、ジュレン
または各種アルキルベンゼンの混合物等の芳香族炭化水
素である摩擦材用樹脂組成物である。
［６］前記の項「１」〜［５］のいずれかに記載の摩擦
材用樹脂組成物を用いて製造した摩擦材である。
本発明の樹脂成分の分子構造の特徴は、疎水性基である
アルキル置換芳香族炭化水素構造を分子中に有するフェ
ノール変性芳香族炭化水素樹脂である。該フェノール変
性芳香族炭化水素樹脂は、アルキル置換芳香族炭化水素
とホルマリンとから合成されるアルキル置換芳香族炭化
水素ホルムアルデヒド樹脂とフェノール性水酸基を有す
る化合物、更に必要によりホルマリンとを反応させて得
られる合成物である。The gist of the present invention is as follows. [1] A resin composition for a friction material, comprising a phenol-modified alkyl-substituted aromatic hydrocarbon resin and reinforcing fibers, wherein the ratio of the alkyl-substituted aromatic nucleus and the phenol nucleus in the phenol-modified alkyl-substituted aromatic hydrocarbon resin is 5: 95-7
It is 5:25, and the curing agent for the phenol-modified alkyl-substituted aromatic hydrocarbon resin is hexamethylenetetramine. [2] In the above-mentioned item "1", the phenol-modified alkyl-substituted aromatic hydrocarbon resin is a resin composition for a friction material, which is a phenol-modified xylene resin. [3] In the above item "1", the phenol-modified alkyl-substituted aromatic hydrocarbon resin is a compound having a phenolic hydroxyl group, or a compound having a phenolic hydroxyl group and formalin are reacted with an alkyl-substituted aromatic hydrocarbon formaldehyde resin. It is a resin composition for a friction material which is a synthetic product obtained by the above. [4] In the above item [1], the phenol-modified alkyl-substituted aromatic hydrocarbon resin is an alkyl-substituted aromatic hydrocarbon formaldehyde resin, and phenol and 2 in the molecule.
A resin composition for a friction material, which is a synthetic product obtained by reacting formalin as needed with a mixed system of compounds having at least one phenolic hydroxyl group. [5] In the resin composition for a friction material, in the above item "1", the alkyl-substituted aromatic hydrocarbon is an aromatic hydrocarbon such as toluene, xylene, mesitylene, durene, or a mixture of various alkylbenzenes. [6] A friction material manufactured using the resin composition for a friction material according to any one of the above items [1] to [5]. The molecular structure of the resin component of the present invention is a phenol-modified aromatic hydrocarbon resin having an alkyl-substituted aromatic hydrocarbon structure which is a hydrophobic group in the molecule. The phenol-modified aromatic hydrocarbon resin is obtained by reacting an alkyl-substituted aromatic hydrocarbon formaldehyde resin synthesized from an alkyl-substituted aromatic hydrocarbon and formalin, a compound having a phenolic hydroxyl group, and if necessary, formalin. It is a synthetic product.
【０００５】前記のアルキル置換芳香族炭化水素ホルム
アルデヒド樹脂は、トルエン、キシレン、メシチレン、
ジュレン、各種アルキルベンゼンの混合物等の芳香族炭
化水素とホルムアルデヒドとを酸触媒存在下に反応して
得られる。その反応物の分子構造は芳香族炭化水素核が
メチレン結合、メチレンエーテル結合、アセタール結合
で結合し、分子の末端にメチロール基、メトキシ基を有
することが好ましい。The above-mentioned alkyl-substituted aromatic hydrocarbon formaldehyde resins include toluene, xylene, mesitylene,
It is obtained by reacting formaldehyde with an aromatic hydrocarbon such as durene or a mixture of various alkylbenzenes in the presence of an acid catalyst. The molecular structure of the reaction product is preferably such that aromatic hydrocarbon nuclei are bonded by a methylene bond, a methylene ether bond or an acetal bond, and a methylol group or a methoxy group is present at the end of the molecule.
【０００６】フェノール性水酸基を有する化合物として
は、フェノール、ヒドロキノン、カテコール、レゾルシ
ン、ビスフェノールＡ及びその誘導体が挙げられ、これ
らの単独、或いは少なくとも２種類を混合して用いるこ
とができる。ホルマリン源としては、一般的に用いられ
ているホルマリン、パラホルムアルデヒド等の他に、ベ
ンズアルデヒド、テレフタルアルデヒド等の芳香族アル
デヒド化合物を単独、或いは少なくとも２種類を混合し
て用いることができる。また、触媒としては、修酸、硫
酸、塩酸、パラトルエンスルホン酸、メタンスルホン
酸、ベンゼンスルホン酸等の酸系の化合物或いは酢酸亜
鉛等の金属塩類を単独或いは併用して用いることができ
る。Examples of the compound having a phenolic hydroxyl group include phenol, hydroquinone, catechol, resorcin, bisphenol A and derivatives thereof, and these can be used alone or in combination of at least two kinds. As the formalin source, in addition to commonly used formalin, paraformaldehyde and the like, aromatic aldehyde compounds such as benzaldehyde and terephthalaldehyde can be used alone or in combination of at least two kinds. As the catalyst, acid compounds such as oxalic acid, sulfuric acid, hydrochloric acid, p-toluenesulfonic acid, methanesulfonic acid, and benzenesulfonic acid, or metal salts such as zinc acetate can be used alone or in combination.
【０００７】本発明において、フェノール変性アルキル
置換芳香族炭化水素樹脂を用いる場合、該樹脂中のアル
キル置換芳香族核とフェノール核の割合が、５／９５〜
７５／２５であり、アルキル置換芳香族核がフェノール
核に対し７５／２５より大きくなるとヘキサメチレンテ
トラミンを用いて硬化させる際に硬化時間が長くなり実
用上問題となる。一方、この比が５／９５より小さくな
ると変性の効果が著しく低下する。In the present invention, when a phenol-modified alkyl-substituted aromatic hydrocarbon resin is used, the ratio of the alkyl-substituted aromatic nucleus to the phenol nucleus in the resin is 5/95 to.
When it is 75/25, and the alkyl-substituted aromatic nucleus is larger than 75/25 with respect to the phenol nucleus, the curing time becomes long when curing with hexamethylenetetramine, which is a practical problem. On the other hand, if this ratio is less than 5/95, the effect of modification is significantly reduced.
【０００８】本発明の摩擦材用樹脂組成物には、公知の
フェノール樹脂、或いはメラミン変性フェノール樹脂、
マレイミド変性フェノール樹脂等の各種変性フェノール
樹脂を任意の割合で混合して用いることもできる。この
場合、アルキル変性芳香族核の全樹脂中の芳香族核に占
める割合は、５／９５〜７５／２５（５〜７５％）であ
ることが望ましい。本発明の樹脂組成物の硬化反応は、
ノボラック型フェノール樹脂の硬化剤であるヘキサメチ
レンテトラミンを用いることが好ましい。このヘキサメ
チレンテトラミンの使用量は、全樹脂成分１００重量部
に対して５〜２０重量部が好ましい。The friction resin composition of the present invention includes a known phenol resin or melamine-modified phenol resin,
Various modified phenolic resins such as maleimide modified phenolic resin may be mixed and used at an arbitrary ratio. In this case, the ratio of the alkyl-modified aromatic nucleus to the aromatic nucleus in the total resin is preferably 5/95 to 75/25 (5 to 75%). The curing reaction of the resin composition of the present invention,
Hexamethylenetetramine, which is a curing agent for novolac type phenolic resins, is preferably used. The amount of hexamethylenetetramine used is preferably 5 to 20 parts by weight based on 100 parts by weight of all resin components.
【０００９】本発明において、補強繊維としては、スチ
ール繊維、アルミ繊維、銅繊維、黄銅繊維、亜鉛繊維、
ニッケル繊維、クロム繊維等の金属繊維あるいはガラス
繊維、セラミック繊維等の無機繊維あるいはアラミド繊
維、アクリル繊維等の有機繊維を単独、或いは少なくと
も２種類を複合して用いることができる。また、本発明
の樹脂組成物には必要により充填剤として、黒鉛、金属
粉、金属酸化物粉、硫酸バリウム、水酸化カルシウム、
アルミナ、アラミド繊維、ガラス繊維等を、また、必要
によりシラン系、チタネート系、ジルコネート系等の公
知のカップリング剤を、また、ゴム、エラストマ等の低
応力剤等の添加剤を用いることができる。In the present invention, the reinforcing fibers include steel fibers, aluminum fibers, copper fibers, brass fibers, zinc fibers,
Metallic fibers such as nickel fibers and chromium fibers, glass fibers, inorganic fibers such as ceramic fibers, and organic fibers such as aramid fibers and acrylic fibers can be used alone or in combination of at least two kinds. Further, the resin composition of the present invention, if necessary as a filler, graphite, metal powder, metal oxide powder, barium sulfate, calcium hydroxide,
Alumina, aramid fiber, glass fiber and the like, and if necessary, known coupling agents such as silane-based, titanate-based, zirconate-based, etc., and additives such as low stress agents such as rubber and elastomer can be used. .
【００１０】上記の成分を用いた本発明の摩擦材用樹脂
組成物は、樹脂、ヘキサメチレンテトラミン、無機充填
剤、その他の添加剤をミキサー、コニ―ダ、ロール等の
混合器で均一に混合することにより製造できる。上記で
得られた摩擦材用樹脂組成物は、例えば、１５０〜１８
０℃、１００〜１０００ｋｇｆ／ｃｍ2 、１〜３０分の
条件でプレス成形し、１５０〜２００℃、１〜１０時間
のアフターキュア、の工程を経てデイスクブレーキパッ
ドやブレーキライニング等の摩擦材として自動車、鉄道
の制動部に適用される。The resin composition for a friction material of the present invention using the above components is prepared by uniformly mixing a resin, hexamethylenetetramine, an inorganic filler, and other additives with a mixer such as a mixer, a kneader or a roll. It can be manufactured by The resin composition for a friction material obtained above is, for example, 150 to 18
After press molding under conditions of 0 ° C., 100 to 1000 kgf / cm 2 , and 1 to 30 minutes, after-curing at 150 to 200 ° C. for 1 to 10 hours, as a friction material for disc brake pads, brake linings, etc., automobiles Applied to the braking part of railways.
【実施例】以下、本発明を実施例により具体的に説明す
る。EXAMPLES The present invention will be specifically described below with reference to examples.
【００１１】［実施例１〜３］及び「比較例１〜３］フ
ェノール変性アルキル置換芳香族炭化水素樹脂は、フェ
ノール変性キシレン樹脂Ａ（キシレン核／フェノール核
＝２０／９０、軟化点１００℃）、フェノール変性キシ
レン樹脂Ｂ（キシレン核／フェノール核＝５０／５０、
軟化点９２℃）、フェノール変性キシレン樹脂Ｃ（キシ
レン核／フェノール核＝７５／２５、軟化点９５℃）、
フェノール変性キシレン樹脂Ｄ（キシレン核／フェノー
ル核＝５／９５、軟化点９０℃）、フェノール変性キシ
レン樹脂Ｅ（キシレン核／フェノール核＝８０／２０、
軟化点９７℃）の５種類を用いた。該フェノール変性キ
シレン樹脂 ＜フェノール変性キシレン樹脂Ａ＞の合成
方法の一例を以下に示す。キシレン樹脂ニカノールＧ
（三菱ガス化学株式会社製）１５００ｇにフェノール６
０００ｇ、ｐ−トルエンスルホン酸１．２ｇを加え、１
２０℃、１時間反応した。この後、８０℃に冷却後、ホ
ルマリン２７２０ｇ、修酸２４ｇを加え、１０５℃、２
時間反応させた。１６０℃、４時間減圧濃縮し、フェノ
ール変性キシレン樹脂Ａを５８００ｇ得た。このフェノ
ール変性キシレン樹脂Ａの軟化点は８５℃であった。表
１に、本発明の実施例１〜３及び比較例１〜３の摩擦材
用組成物の成分配合を示した。前記で得た５種類のフェ
ノール変性アルキル置換芳香族炭化水素樹脂（樹脂Ａ〜
Ｅ）と、フェノールノボラック樹脂（日立化成工業株式
会社製、ＨＰ−２０９Ｎ）をそれぞれ２０重量部、及び
硬化剤としてヘキサメチレンテトラミンを1２重量部、
補強繊維として金属繊維（スチール繊維）を３０重量
部、その他充填剤（黒鉛）を２０重量部を配合した後、
該配合物をアイリッヒミキサーで混合して実施例１〜３
及び比較例１〜３の摩擦材用樹脂組成物を得た。[Examples 1 to 3] and "Comparative Examples 1 to 3" Phenol-modified alkyl-substituted aromatic hydrocarbon resins are phenol-modified xylene resin A (xylene nucleus / phenol nucleus = 20/90, softening point 100 ° C.). , Phenol-modified xylene resin B (xylene nucleus / phenol nucleus = 50/50,
Softening point 92 ° C.), phenol-modified xylene resin C (xylene nucleus / phenol core = 75/25, softening point 95 ° C.),
Phenol-modified xylene resin D (xylene nucleus / phenol nucleus = 5/95, softening point 90 ° C.), phenol-modified xylene resin E (xylene nucleus / phenol nucleus = 80/20,
Five kinds of softening points of 97 ° C.) were used. An example of the method for synthesizing the phenol-modified xylene resin <phenol-modified xylene resin A> is shown below. Xylene resin Nikanol G
(Mitsubishi Gas Chemical Co., Ltd.) 1500g phenol 6
000 g, 1.2 g of p-toluenesulfonic acid was added, and 1
The reaction was carried out at 20 ° C. for 1 hour. Then, after cooling to 80 ° C., 2720 g of formalin and 24 g of oxalic acid were added, and the temperature was adjusted to 105 ° C. for 2 minutes.
Reacted for hours. After concentration under reduced pressure at 160 ° C. for 4 hours, 5800 g of phenol-modified xylene resin A was obtained. The softening point of this phenol-modified xylene resin A was 85 ° C. Table 1 shows the composition of the components of the friction material compositions of Examples 1 to 3 and Comparative Examples 1 to 3 of the present invention. The five types of phenol-modified alkyl-substituted aromatic hydrocarbon resins (resins A to
E) and 20 parts by weight of phenol novolac resin (HP-209N manufactured by Hitachi Chemical Co., Ltd.), and 12 parts by weight of hexamethylenetetramine as a curing agent,
After adding 30 parts by weight of metal fibers (steel fibers) as reinforcing fibers and 20 parts by weight of other fillers (graphite),
The formulations were mixed in an Erich mixer to give Examples 1-3.
And the resin composition for friction materials of Comparative Examples 1-3 was obtained.
【００１２】（ゲル化時間の測定）実施例１〜３及び比
較例１〜３の摩擦材用樹脂組成物の１５０℃のゲル化時
間をゲルタイマで測定した。表１に結果を示す。(Measurement of Gelation Time) The gelation time at 150 ° C. of the resin compositions for friction materials of Examples 1 to 3 and Comparative Examples 1 to 3 was measured with a gel timer. The results are shown in Table 1.
【表１】 [Table 1]
【００１３】（ブレーキパッドの成形）実施例１〜３及
び比較例１〜３の摩擦材用樹脂組成物を（成形条件：１
５５℃、５００ｋｇｆ／ｃｍ2 、５分）の条件でプレス
成形し、２００℃、４時間のアフターキュアを行った。
自動車用ブレーキパッドに使用した場合のフェードの評
価結果を図１に示す。(Molding of Brake Pad) The resin compositions for friction materials of Examples 1 to 3 and Comparative Examples 1 to 3 were molded (molding conditions: 1
Press molding was performed under the conditions of 55 ° C., 500 kgf / cm 2 , and 5 minutes), and after-curing was performed at 200 ° C. for 4 hours.
FIG. 1 shows the result of evaluation of fade when used for an automobile brake pad.
【００１４】[0014]
【発明の効果】本発明は、補強繊維の結合剤にフェノー
ル変性アルキル置換芳香族炭化水素樹脂を使用したこと
により、耐フェード性、耐熱性に優れた摩擦材用樹脂組
成物及びそれを用いた摩擦材を提供することができた。INDUSTRIAL APPLICABILITY The present invention uses a phenol-modified alkyl-substituted aromatic hydrocarbon resin as a binder for reinforcing fibers, and thus uses a resin composition for a friction material having excellent fade resistance and heat resistance, and the same. It was possible to provide a friction material.
【図１】 本発明の摩擦材用樹脂組成物を自動車用ブレ
ーキパッドに使用した場合のフェードの評価結果を示
す。FIG. 1 shows the evaluation results of fade when the resin composition for a friction material of the present invention is used in an automobile brake pad.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０９Ｋ 3/14 ５２０ Ｃ０９Ｋ 3/14 ５２０Ｃ ５２０Ｍ ５３０ ５３０Ｇ Ｆ１６Ｄ 69/02 Ｆ１６Ｄ 69/02 Ａ Ｆターム(参考） 3J058 BA34 CA42 FA01 GA04 GA07 GA23 GA28 GA37 GA43 GA45 GA46 GA49 GA50 GA62 GA65 GA73 GA92 4F071 AA69 AD01 AE17 AF22 AF28 AF45 AH07 BA01 BB03 BC03 4J002 BG002 CC121 CE001 CL062 DA076 DA086 DA096 DB006 DL006 DM006 EU187 FA042 FA046 FD012 FD016 FD147 GD00 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) C09K 3/14 520 C09K 3/14 520C 520M 530 530G F16D 69/02 F16D 69/02 A F term (reference) 3J058 BA34 CA42 FA01 GA04 GA07 GA23 GA28 GA37 GA43 GA45 GA46 GA49 GA50 GA62 GA65 GA73 GA92 4F071 AA69 AD01 AE17 AF22 AF28 AF45 AH07 BA01 BB03 BC03 4J002 BG002 CC121 CE001 CL062 DA076 FA096 DA096 DB006 DL01 FA046DA04 EU0471870
Claims (6)
素樹脂と補強繊維を含む摩擦材用樹脂組成物であって、
該フェノール変性アルキル置換芳香族炭化水素樹脂中の
アルキル置換芳香族核とフェノール核の割合が、５：９
５〜７５：２５であり、前記フェノール変性アルキル置
換芳香族炭化水素樹脂の硬化剤がヘキサメチレンテトラ
ミンであることを特徴とする摩擦材用樹脂組成物。1. A resin composition for a friction material, comprising a phenol-modified alkyl-substituted aromatic hydrocarbon resin and a reinforcing fiber,
The ratio of the alkyl-substituted aromatic nucleus and the phenol nucleus in the phenol-modified alkyl-substituted aromatic hydrocarbon resin is 5: 9.
5 to 75:25, and the curing agent for the phenol-modified alkyl-substituted aromatic hydrocarbon resin is hexamethylenetetramine, which is a resin composition for friction materials.
ル置換芳香族炭化水素樹脂がフェノール変性キシレン樹
脂であることを特徴とする摩擦材用樹脂組成物。2. The resin composition for a friction material according to claim 1, wherein the phenol-modified alkyl-substituted aromatic hydrocarbon resin is a phenol-modified xylene resin.
ル置換芳香族炭化水素樹脂がアルキル置換芳香族炭化水
素ホルムアルデヒド樹脂と、フェノール性水酸基を有す
る化合物、又はフェノール性水酸基を有する化合物及び
ホルマリン、とを反応させて得られる合成物であること
を特徴とする摩擦材用樹脂組成物。3. The phenol-modified alkyl-substituted aromatic hydrocarbon resin according to claim 1, wherein the alkyl-substituted aromatic hydrocarbon formaldehyde resin is reacted with a compound having a phenolic hydroxyl group, or a compound having a phenolic hydroxyl group and formalin. A resin composition for a friction material, which is a synthetic product obtained by the above.
ル置換芳香族炭化水素樹脂がアルキル置換芳香族炭化水
素ホルムアルデヒド樹脂に、フェノールと分子中に２個
以上のフェノール性水酸基を有する化合物の混合系、必
要によりホルマリン、とを反応させて得られる合成物で
あることを特徴とする摩擦材用樹脂組成物。4. The mixed system of claim 1, wherein the phenol-modified alkyl-substituted aromatic hydrocarbon resin is an alkyl-substituted aromatic hydrocarbon formaldehyde resin, wherein phenol and a compound having two or more phenolic hydroxyl groups in the molecule are required. A resin composition for a friction material, which is a synthetic product obtained by reacting with formalin.
化水素が、トルエン、キシレン、メシチレン、ジュレン
または各種アルキルベンゼンの混合物等の芳香族炭化水
素であることを特徴とする摩擦材用樹脂組成物。5. The resin composition for a friction material according to claim 1, wherein the alkyl-substituted aromatic hydrocarbon is an aromatic hydrocarbon such as toluene, xylene, mesitylene, durene or a mixture of various alkylbenzenes.
樹脂組成物を用いたことを特徴とする摩擦材。6. A friction material comprising the resin composition for a friction material according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001194412A JP2003012897A (en) | 2001-06-27 | 2001-06-27 | Resin composition for friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001194412A JP2003012897A (en) | 2001-06-27 | 2001-06-27 | Resin composition for friction material |
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| Publication Number | Publication Date |
|---|---|
| JP2003012897A true JP2003012897A (en) | 2003-01-15 |
Family
ID=19032553
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|---|---|---|---|
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| JP (1) | JP2003012897A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185371A (en) * | 2018-10-29 | 2019-01-11 | 海宁易达自动化设备有限公司 | The automobile-used hydraulic brake of motor is without asbestos gasket and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109185371A (en) * | 2018-10-29 | 2019-01-11 | 海宁易达自动化设备有限公司 | The automobile-used hydraulic brake of motor is without asbestos gasket and preparation method thereof |
| CN109185371B (en) * | 2018-10-29 | 2020-05-12 | 海宁易达自动化设备有限公司 | Non-asbestos lining of hydraulic disc brake for motorcycle and preparation method thereof |
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