JPS5818940B2 - Phenolic resin composition for sliding materials - Google Patents
Phenolic resin composition for sliding materialsInfo
- Publication number
- JPS5818940B2 JPS5818940B2 JP13898979A JP13898979A JPS5818940B2 JP S5818940 B2 JPS5818940 B2 JP S5818940B2 JP 13898979 A JP13898979 A JP 13898979A JP 13898979 A JP13898979 A JP 13898979A JP S5818940 B2 JPS5818940 B2 JP S5818940B2
- Authority
- JP
- Japan
- Prior art keywords
- graphite
- sliding
- resin composition
- sliding materials
- phenolic resin
- 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
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- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】 本発明は摺動材用樹脂組成物に関するものである。[Detailed description of the invention] The present invention relates to a resin composition for sliding materials.
フェノール樹脂、エポキシ樹脂、アミン樹脂、シポリイ
ミド樹脂、ポリアミドイミド樹脂、アラルキルエーテル
樹脂などの摺動用樹脂は優れた電気的性質、機械的性質
を有しており、また摺動材料としての摩擦特性に関して
も優れている。Sliding resins such as phenol resins, epoxy resins, amine resins, cypolyimide resins, polyamideimide resins, and aralkyl ether resins have excellent electrical and mechanical properties, and also have excellent friction properties as sliding materials. is also excellent.
しかし、これらの摺動用樹脂を単独で使用することは摩
耗が大きい欠点がある。However, using these sliding resins alone has the drawback of high wear.
これを改善する手段としては天然あるいは人造黒鉛、炭
素繊維、ガラス繊維、アスベスト繊維、金属酸化物など
の適切な充填剤を選択して添加する方法が知られている
。As a means for improving this, a method is known in which a suitable filler such as natural or artificial graphite, carbon fiber, glass fiber, asbestos fiber, metal oxide, etc. is selected and added.
しかしながら、上記の公知ないし、周知の手段では真空
中や高温などの雰囲気中では耐摩耗性の向上や摩擦係数
を下げることに限界があり摺動材料的な使用には十分で
はない。However, the above-mentioned known or well-known means have limitations in improving wear resistance and lowering the coefficient of friction in an atmosphere such as a vacuum or high temperature, and are not sufficient for use as a sliding material.
たとえば天然黒鉛は優れた自己潤滑性を有しているが、
これは黒鉛の層状構造によるものと考えられる。For example, natural graphite has excellent self-lubricating properties,
This is thought to be due to the layered structure of graphite.
しかしこのものを真空中や高温状態で使用すると異常摩
耗が生じるため、使用雰囲気中に小量の水分などが必要
となる。However, if this product is used in a vacuum or at high temperatures, abnormal wear occurs, so a small amount of moisture is required in the usage atmosphere.
このため水分のない真空中や高温状態などの雰囲気中で
の無潤滑摺動には限界があった。For this reason, there is a limit to the ability to slide without lubrication in a moisture-free vacuum or high-temperature atmosphere.
すなわち摺動用樹脂に充填剤として通常の天然黒鉛たと
えば鱗状黒鉛、土状黒鉛などまたは人造黒鉛粉末を混合
したものでは十分な耐摩耗性を得るに至っていない、ま
たガラス繊維を添加することは相手材を傷つけてしまい
摺動材としての使用に限界がある。In other words, mixing ordinary natural graphite such as scaly graphite, earthy graphite, etc. or artificial graphite powder as a filler with sliding resin does not provide sufficient wear resistance, and addition of glass fiber does not affect the mating material. This limits its use as a sliding material.
また炭素繊維は高価であり通常の黒鉛や炭素などにくら
べて硬いため、使用条件によればアルミニウムなどの軟
金属などの表面を傷つけるなどの欠点が生じる。Furthermore, carbon fiber is expensive and harder than ordinary graphite or carbon, so depending on the conditions of use, it has the disadvantage of damaging the surface of soft metals such as aluminum.
また、上記の充填剤を使用した摺動材は高温での耐摩耗
性が十分でな（、また摩擦係数を下げるまでに至ってい
ない。Furthermore, sliding materials using the above-mentioned fillers do not have sufficient wear resistance at high temperatures (and have not yet been able to lower the coefficient of friction).
本発明者らは種々検討した結果、真空中や高温状態など
の雰囲気中でも優れた耐摩耗性、低摩擦係数を得る手段
として摺動用樹脂に含水黒鉛を添加することが極めて有
効な手段であることを見出した。As a result of various studies, the present inventors have found that adding hydrated graphite to the sliding resin is an extremely effective means of obtaining excellent wear resistance and a low coefficient of friction even in atmospheres such as vacuum and high temperature conditions. I found out.
本発明は黒鉛を無機酸の系で処理後水洗して得られた含
水黒鉛を３〜５０重量％混合してなる摺動材用フェノー
ル樹脂組成物に関する。The present invention relates to a phenolic resin composition for sliding materials, which is made by mixing 3 to 50% by weight of hydrated graphite obtained by treating graphite with an inorganic acid system and washing it with water.
本発明において摺動材用フェノール樹脂組成物（以下摺
動材用樹脂組成物という）に含まれる摺動用樹脂として
は公知のフェノール樹脂（フェノール、クレゾール、キ
シレノール、アルキルフェノールなどにホルムアルデヒ
ドを縮合反応させて得られる樹脂）が使用される。In the present invention, the sliding resin contained in the phenolic resin composition for sliding materials (hereinafter referred to as the resin composition for sliding materials) is a known phenolic resin (phenol, cresol, xylenol, alkylphenol, etc.) made by condensing formaldehyde. Resin obtained) is used.
また本発明において、含水黒鉛としては通常の方法によ
って得られるものが使用され、たとえば天然鱗状黒鉛を
濃硫酸−濃硝酸の混酸などで処理した後水内、脱水を行
ない、必要に応じて水酸化アンモニウム水溶液で過剰な
酸および黒鉛表面に吸着している酸を中和し１０５〜２
００℃で乾燥して、含水黒鉛を得ることができる。In the present invention, the hydrous graphite used is one obtained by a normal method. For example, natural scale graphite is treated with a mixed acid of concentrated sulfuric acid and concentrated nitric acid, dehydrated in water, and hydroxylated as necessary. Neutralize the excess acid and the acid adsorbed on the graphite surface with an ammonium aqueous solution.
Hydrous graphite can be obtained by drying at 00°C.
黒鉛としては通常の天然黒鉛たとえば鱗状黒鉛、土状黒
鉛など、または人造黒鉛が使用でき、黒鉛を酸処理する
系としては、発煙硝酸、濃硫酸−過マンガン酸カリウム
、濃硫酸−塩素酸カリウム、濃硫酸−重クロム酸カリウ
ム、濃硫酸−過硫酸アンモニウムなどの無機酸の系が使
用できる。As the graphite, normal natural graphite such as scaly graphite, earthy graphite, etc., or artificial graphite can be used, and the acid treatment system for graphite includes fuming nitric acid, concentrated sulfuric acid-potassium permanganate, concentrated sulfuric acid-potassium chlorate, Inorganic acid systems such as concentrated sulfuric acid-potassium dichromate and concentrated sulfuric acid-ammonium persulfate can be used.
更に含水黒鉛の形状は均一混合性、摺動性改善効果など
を考慮してその大きさは１〜１００ミクロン、特に１０
〜５０ミクロンのものが望ましい。Furthermore, the shape of the hydrated graphite should be adjusted to a size of 1 to 100 microns, especially 10 microns, in consideration of uniform mixing properties and improved sliding properties.
~50 microns is preferred.
あまり大き過ぎる場合には、均一混合性や組成物として
の成形性などに難点が生じ空隙のない緻密な成形品が得
られ難くなる。If it is too large, problems will arise in uniform mixing properties and moldability of the composition, making it difficult to obtain a dense molded product without voids.
上記の方法により得られた含水黒鉛の加熱による重量減
少率の例を第１図に示す。FIG. 1 shows an example of the weight loss rate due to heating of hydrated graphite obtained by the above method.
本発明になる摺動材用樹脂組成物には摺動用樹脂、含水
黒鉛の他に必要に応じ顔料、帯電防止剤、その他炭素繊
維、ガラス繊維等の各種添加剤を添加することも可能で
ある。In addition to the sliding resin and hydrated graphite, various additives such as pigments, antistatic agents, and other carbon fibers and glass fibers can be added to the resin composition for sliding materials according to the present invention, if necessary. .
またこれらの混合手段についても特に限定はな（、例え
ば粉末状にて同時に混合することができ、原料の粉砕時
に混合を行なうことも可能である。Furthermore, there is no particular limitation on the means for mixing these ingredients (for example, they can be mixed simultaneously in powder form, and it is also possible to mix them at the time of pulverizing the raw materials).
本発明の摺動用樹脂組成物は各種成形方法によって成形
され得るものであり、例えば、圧縮成形、トランスファ
成形、射出成形など摺動材の性質に応じて通常の成形法
が適用可能である。The sliding resin composition of the present invention can be molded by various molding methods, and for example, ordinary molding methods such as compression molding, transfer molding, injection molding, etc. can be applied depending on the properties of the sliding material.
更にガラス繊維、アスベスト、ガラスマットなどに含浸
、焼成して行なう通常の成形法も適用可能である。Furthermore, ordinary molding methods in which glass fiber, asbestos, glass mat, etc. are impregnated and fired are also applicable.
本発明においては含水黒鉛は摺動材用樹脂組成物に対し
て３〜５０重量％添加される。In the present invention, hydrated graphite is added in an amount of 3 to 50% by weight based on the resin composition for sliding materials.
添加量が３重量％未満の場合は含水黒鉛の添加効果が小
さい為、特性のバラツキが太き（なり、また５０重量％
を超える場合は材料の混合性、成形性が著しく悪くなり
、材料強度が低下する。If the amount added is less than 3% by weight, the effect of adding hydrated graphite is small, so the variation in properties becomes large (or 50% by weight).
If it exceeds this value, the mixability and moldability of the material will deteriorate significantly, and the strength of the material will decrease.
以下実施例により本発明を説明する。The present invention will be explained below with reference to Examples.
。なお、以下の実施例あるいは比較例中におい
て％は重量パーセントを示す。. In addition, in the following examples and comparative examples, % indicates weight percent.
実施例 １
固定炭素分９８％、灰分１％、揮発分１％で１２００メ
ツシユにピークを有するソ連産の天然黒鉛１５０１を濃
硫酸（９５％）４００グと硝酸（６０〜６２％）２００
ｆの混酸液中に常温で２時間浸漬したあと、ｐＨが６．
５になるように水洗した。Example 1 Natural graphite 1501 from the Soviet Union, which has a fixed carbon content of 98%, ash content of 1%, and volatile content of 1% and has a peak at 1200 mesh, was mixed with 400 g of concentrated sulfuric acid (95%) and 200 g of nitric acid (60-62%).
After being immersed in the mixed acid solution of f for 2 hours at room temperature, the pH was 6.
I washed it with water so that it was 5.
これを吸引濾過し吸水分が３０％の湿潤黒鉛を得た。This was suction-filtered to obtain wet graphite with a water absorption of 30%.
次に１５０℃の乾燥機で１時間乾燥し、含水黒鉛を得た
。Next, it was dried in a dryer at 150° C. for 1 hour to obtain hydrated graphite.
このようにして得た含水黒鉛３０％にノボラック型フェ
ノール・ホルムアルデヒド粉末樹脂（ヘキサメチレンテ
トラミン１２％を含む）、（三菱ガス化学ＫＫ製、商品
名ＳＭＰ１０７Ａ）３５％、アスベスト（ジョンスマン
ビル社製、商品名クラス６Ｄアスベスト繊維）３３％、
ステアリン酸マグネシウム（日本油脂■製、商品名ニラ
サンマグネシウムステアレート）２％を高速混合機で均
一に予備混合した。30% hydrated graphite thus obtained, novolac type phenol formaldehyde powder resin (containing 12% hexamethylenetetramine), 35% asbestos (manufactured by Mitsubishi Gas Chemical KK, trade name SMP107A), asbestos (manufactured by Johns Manville, Product name Class 6D asbestos fiber) 33%,
2% of magnesium stearate (manufactured by NOF ■, trade name Nirasan Magnesium Stearate) was uniformly premixed using a high-speed mixer.
その後メタノール６％（外割り）を添加し、加圧ニーダ
で加圧混練後、加熱ロールで揮発分、流動性の調整を行
ない、摺動材用樹脂組成物を得た。Thereafter, 6% methanol (externally divided) was added, and after kneading under pressure with a pressure kneader, the volatile content and fluidity were adjusted with a heating roll to obtain a resin composition for sliding materials.
次にとの摺動材用樹脂組成物を７０ｍｍＸ １００ｉｍ
Ｘ ５闘の板に圧縮成形し、１６′０℃で１４時間焼成
したのち徐冷した。Next, add the resin composition for sliding material to 70mm x 100im.
It was compression molded into a 5x5 plate, fired at 16'0°C for 14 hours, and then slowly cooled.
成形品はＪＩＳ型定速式摩擦試験に使用した。The molded product was used in a JIS type constant speed friction test.
その試験結果を第２図および第３図に示す。The test results are shown in FIGS. 2 and 3.
比較例 １
配合割合は実施例１と同じとし、含水黒鉛のかわりに天
然鱗状黒鉛（日本黒鉛工業■製、商品名ＣＢ−１５０）
を使用し、その他は実施例１と同じ作業を行なった。Comparative Example 1 The blending ratio was the same as in Example 1, and natural scaly graphite (manufactured by Nippon Graphite Industries ■, trade name CB-150) was used instead of hydrous graphite.
The other operations were the same as in Example 1.
実施例 ２
実施例１で使用したものと同じ含水黒鉛３０％、ノボラ
ック型フェノールホルムアルデヒド粉末樹脂３５％、ア
スベスト２５％、ステアリン酸マグネシウム２％および
炭素繊維（呉羽化学ＫＫ製、商品名クレハカーボンファ
イバーＭ２Ｏ２）８％を高速混合機で均一混合した。Example 2 Same as those used in Example 1: 30% hydrated graphite, 35% novolac type phenol formaldehyde powder resin, 25% asbestos, 2% magnesium stearate, and carbon fiber (manufactured by Kureha Kagaku KK, trade name Kureha Carbon Fiber M2O2). ) 8% were uniformly mixed using a high-speed mixer.
その後メタノール７％（外割り）を添加し、加圧ニーダ
で加圧混練後、加熱ロールで揮発分、流動性の調整を行
ない摺動材用樹脂組成物を得た。Thereafter, 7% (external) methanol was added, and after kneading under pressure with a pressure kneader, the volatile content and fluidity were adjusted with a heating roll to obtain a resin composition for sliding materials.
次にこの摺動材用樹脂組成物を７ｍｍ×１１０ｍｍ×５
ｍｍの板に圧縮成形し、１６０℃で１４時間焼成したの
ち徐冷した。Next, apply this resin composition for sliding materials to 7 mm x 110 mm x 5
It was compression molded into a plate of mm in size, baked at 160°C for 14 hours, and then slowly cooled.
成形品はＪＩＳ型定速式摩擦試験に使用した。The molded product was used in a JIS type constant speed friction test.
その試験結果を第２図および第３図に示す。The test results are shown in FIGS. 2 and 3.
・比較例 ２
配合割合は実施例２と同じくし、含水黒鉛のかわりに天
然鱗状黒鉛（日本黒鉛工業ＫＫ製、商品名ＣＢ−１５０
）を使用し、その他は実施例２と同じ作業を行なった。Comparative Example 2 The blending ratio was the same as in Example 2, and natural scale graphite (manufactured by Nippon Graphite Industries KK, trade name CB-150) was used instead of hydrous graphite.
), and the other operations were the same as in Example 2.
なおＪＩＳ型定速式摩擦試験は荷重：１０ｋｇ／ｃＡ、
速度ニア、８５ｍ／秒、相手材ＦＣ−２５パーライトで
行なった。In addition, JIS type constant speed friction test load: 10 kg/cA,
The test was carried out at a near speed of 85 m/sec using FC-25 pearlite as the mating material.
上記の結果からフェノール樹脂に含水黒鉛を添加した複
合材は、天然鱗状黒鉛、炭素繊維など（ただし含水黒鉛
が無添加の場合）を添加した複合材と比較して高温領域
での摺動面に水分の少ない状態における摩擦係数が著し
く小さく安定していて、また摩耗率も大幅に小さくなり
摺動性が著しく改善される。From the above results, composite materials made by adding hydrated graphite to phenolic resin have better sliding surfaces in high-temperature regions than composite materials made by adding natural scale graphite, carbon fiber, etc. (provided that hydrated graphite is not added). The coefficient of friction in a state with little moisture is extremely small and stable, and the wear rate is also significantly reduced, resulting in a marked improvement in sliding properties.
第１図は含水黒鉛の処理温度と重量減少率の関係を示す
グラフ、第２図はディスク面温度と摩擦係数の関係を示
すグラフ、第３図はディスク面温度と摩耗率の関係を示
すグラフである。Figure 1 is a graph showing the relationship between the treatment temperature of hydrous graphite and weight reduction rate, Figure 2 is a graph showing the relationship between disk surface temperature and friction coefficient, and Figure 3 is a graph showing the relationship between disk surface temperature and wear rate. It is.
Claims (1)
鉛を３〜５０重量％混合してなる摺動材用ジフェノール
樹脂組成物。1. A diphenol resin composition for sliding materials, which is made by mixing 3 to 50% by weight of hydrated graphite obtained by treating graphite with an inorganic acid system and washing it with water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13898979A JPS5818940B2 (en) | 1979-10-25 | 1979-10-25 | Phenolic resin composition for sliding materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13898979A JPS5818940B2 (en) | 1979-10-25 | 1979-10-25 | Phenolic resin composition for sliding materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5661458A JPS5661458A (en) | 1981-05-26 |
| JPS5818940B2 true JPS5818940B2 (en) | 1983-04-15 |
Family
ID=15234874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13898979A Expired JPS5818940B2 (en) | 1979-10-25 | 1979-10-25 | Phenolic resin composition for sliding materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5818940B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58127745A (en) * | 1982-01-23 | 1983-07-29 | インタ−カル カンパニ− | Composite material containing interadditive graphite in organic polymer matrix and manufacture |
| US4477608A (en) * | 1982-08-20 | 1984-10-16 | Ciba-Geigy Corporation | Compositions containing graphite |
-
1979
- 1979-10-25 JP JP13898979A patent/JPS5818940B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5661458A (en) | 1981-05-26 |
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