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JPH0367559B2 - - Google Patents
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JPH0367559B2 - - Google Patents

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Publication number
JPH0367559B2
JPH0367559B2 JP61217242A JP21724286A JPH0367559B2 JP H0367559 B2 JPH0367559 B2 JP H0367559B2 JP 61217242 A JP61217242 A JP 61217242A JP 21724286 A JP21724286 A JP 21724286A JP H0367559 B2 JPH0367559 B2 JP H0367559B2
Authority
JP
Japan
Prior art keywords
lubricating oil
lubricating
molecular weight
ultra
lubricating composition
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
Application number
JP61217242A
Other languages
Japanese (ja)
Other versions
JPS6372791A (en
Inventor
Hiromasa Uchama
Masakane Takemoto
Masao Ando
Motofumi Kurahashi
Teruyuki Pponda
Eisaku Matsumoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shin Etsu Chemical Co Ltd
Nippon Steel Corp
Original Assignee
Shin Etsu Chemical Co Ltd
Nippon Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shin Etsu Chemical Co Ltd, Nippon Steel Corp filed Critical Shin Etsu Chemical Co Ltd
Priority to JP21724286A priority Critical patent/JPS6372791A/en
Publication of JPS6372791A publication Critical patent/JPS6372791A/en
Publication of JPH0367559B2 publication Critical patent/JPH0367559B2/ja
Granted legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)
  • Lubricants (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

[産業上の利用分野] この発明は、潤滑油と超高分子量ポリエチレン
とからなる自己潤滑性組成物に係り、特に低速高
荷重の条件下で優れた潤滑性能を発揮する自己潤
滑性組成物に関する。 [従来の技術] 潤滑油を直接適用するのが困難な場所、例えば
ブツシユライナー等では通常二硫化モリブデン、
グラフアイト等の固体潤滑剤が使用されるが、こ
のような固体潤滑剤は潤滑油が有するようなクサ
ビ効果に乏しく、低速かつ高荷重の条件下で長期
間に亘つて優れた潤滑性能を付与するのが困難で
あり、また、例えば回転要素、軸受、種々のタイ
プの摺動軸受、ワイヤロープ、スクリユー、鎖駆
動、歯車等のような伝導装置に関する機械要素で
の潤滑についても、その摺動面に長期間に亘つて
継続的かつ効果的に潤滑油を供給し優れた潤滑性
能を付与するのは困難なことである。 そこで、従来においては、このような問題を解
決し得るものとして、超高分子量ポリオレフイン
類に鉱質潤滑油を含浸させ、ゲル化させて含浸さ
れた鉱質潤滑油が滲み出るようにした自己潤滑組
成物(特公昭47−3455号公報)等が提案されてい
る。 [発明が解決しようとする問題点] 本発明の目的は、低温領域での潤滑油の滲み出
し性が良好で、低速高荷重の条件下での負荷荷重
に対する摩擦係数やブロツク摩耗量等において優
れた潤滑性能を発揮すると共に、長期間に亘つて
継続的かつ効果的に潤滑油を供給し得る新規な自
己潤滑組成物を提供することにある。 [問題点を解決するための手段] すなわち、本発明は、トラクシヨン係数の値が
0.07以上の水素化された環を有するナフテン系潤
滑油10〜90重量%と、固形化して上記潤滑油を含
浸すると共にこの含浸された潤滑油が滲み出る結
果として潤滑性を発揮する超高分子量ポリエチレ
ン90〜10重量%とからなる自己潤滑性組成物であ
る。 本発明で使用する潤滑油は、例えば曽田式円筒
式摩擦試験機を使用して測定されるそのトラクシ
ヨン係数(特公昭60−43391号公報参照)の値が
0.07以上、好ましくは0.08以上である必要があ
る。このトラクシヨン係数の値が大きくなると圧
力粘度指数の値も大きくなる傾向を示し、この圧
力粘度指数が大きいと低速高荷重の条件下での負
荷荷重に対する摩擦係数やブロツク摩耗量等で示
される潤滑性能が向上する。 このようなトラクシヨン係数を満足する潤滑油
としては、具体的には、ジアルキル芳香族炭化水
素とジアリルアルカンとの混合油(特公昭47−
40525号公報)、ポリメチルメタクリレート(特公
昭48−31828号公報)、ピバリン酸モノエステル
(特公昭49−11309号公報)、ハロゲン化アルキル
ナフタレン(特公昭49−16900号公報)、アダマン
タン類(特公昭48−41067号及び特公昭48−42068
号公報)及びアルキルナフタレン(米国特許第
2549377号明細書)等を挙げることができるほか、
水素化された環を有するナフテン系油から潤滑油
として、ジシクロヘキシルエタン(特公昭48−
29715号公報)、ジシクロヘキシルプロパン(特公
昭53−36105号公報)、水素化縮合環化合物(米国
特許第3411369号明細書)、1個以上の飽和の炭素
含有環状リングを有するナフテン(米国特許第
3440894号明細書)、2個以上の飽和の炭素含有環
状リングを有するナフテン(米国特許第3925217
号明細書)、ナフテンとパラフインの混合油(米
国特許第3595796号及び米国特許第3595797号明細
書)、キシレン及び/又はトルエンとスチレンの
アルキル化反応生成物を水素化して得られる主と
して1,1−ジアリルエタン系化合物からなるも
の(特開昭55−43108号公報)及びその他のナフ
テン系油(特開昭55−40726号、特開昭55−60595
号、特開昭57−172992号、特開昭57−172993号及
び特開昭58−122994号公報並びに特公昭58−
27838号及び特公昭60−43391号公報等)等を挙げ
ることができるが、好ましくは水素化ベンジルビ
フエニル、水素化ジベンジルトルエン、水素化ア
ルキルベンゼン等の水素化された環を有するナフ
テン系油である。 また、上記潤滑油中には、そのトラクシヨン係
数の値をより大きくするために、例えば特開昭61
−19697号公報に記載されているようなシクロヘ
キシル(メタ)アクリレート系ポリマー等のトラ
クシヨン係数を向上させることができる添加剤を
添加することができるほか、一般の潤滑油に要求
される種々の性能、例えば酸化安定性、防錆性、
粘度指数向上性、消泡性、耐腐蝕性、耐摩擦性、
ゴム膨潤性等を付与しまた向上させるために、例
えば2,6−ジ−tert−ブチル−p−クレゾール
等のアルキルフエノール、ジアルキルジチオ燐酸
亜鉛等の硫黄や燐化合物の酸化防止剤、アミン
類、エステル類、金属塩類等の防錆剤、粘度指数
向上剤、シリコーン系重合物等の消泡剤、その他
耐腐蝕剤、耐摩擦剤、ゴム膨潤剤等を添加するこ
とができる。 また、本発明で使用する超高分子量ポリエチレ
ンは、その平均分子量が1×106程度以上、好ま
しくは2×106〜5×106程度のものであり、例え
トリアルキルアルミニウムと塩化チタンとからな
る系のチーグラー触媒を使用して常圧下でエチレ
ンを液相重合させるチーグラー法(低圧法)等で
製造することができる。このような超高分子量ポ
リエチレンは、固形化して上記潤滑油を含浸する
ことができると共にそれ自体自己潤滑性を発揮
し、種々の機械要素等に適用した場合この含浸さ
れた潤滑油が滲み出る結果として潤滑性を発揮す
ることができる。 さらに、上記潤滑油と超高分子量ポリエチレン
とから自己潤滑性組成物を製造する際の両者の配
合割合は、製造される自己潤滑性組成物に対して
要求される潤滑剤保持量、機械的強度、硬度、寸
法安定性等によつて異なるが、通常潤滑剤が10〜
90重量%、好ましくは20〜70重量%であり、超高
分子量ポリエチレンが90〜10重量%、好ましくは
80〜30重量%である。 さらに、本発明の自己潤滑性組成物において
は、その潤滑性、機械的強度、硬度、寸法安定
性、難燃性、安定性等を改善する目的で二硫化モ
リブデンやテフロン等の固体潤滑剤や種々の添加
剤、例えばガラス繊維、ケイソウ土、ナイロン粉
末、染料、顔料、安定剤、難燃剤等の添加剤を通
常10重量%以下の範囲内で添加することができ
る。 本発明の自己潤滑性組成物を製造するに当つて
は、先ず上記潤滑油と超高分子量ポリエチレン並
びに必要に応じて添加される添加剤を所定の割合
で配合し、均一に混合して100〜250℃、好ましく
は150〜200℃の範囲で加熱しゲル化させて所望の
形状に固形化させる。この際、上記各原料の配合
割合を変えることにより、ゼリー状、半固形状、
固体状等に形成することができるほか、潤滑油の
配合量に応じてこの潤滑油の滲み出し量を調整す
ることができる。 [実施例] 以下、実施例に基いて、本発明の自己潤滑性組
成物を具体的に説明する。 実施例 1 パーヒドロベンジルビフエニル系潤滑油(トラ
クシヨン係数:0.09、ISO粘度40℃:68cst.)70
gと平均分子量3×106の超高分子量ポリエチレ
ン30gとを充分に混合し、得られた混合物を28mm
φの試験管に入れ、これを前もつて170℃に設定
したオーブン中に設置し2時間加熱した。次い
で、オーブン中から取出した試験管を約5分間水
冷し、ゼリー状に固形化して潤滑油が滲み出す潤
滑性組成物を得た。 実施例 2 パーヒドロジベンジルトルエン系潤滑油(トラ
クシヨン係数:0.09、ISO粘度40℃:8cst.)50g
と実施例1と同じ超高分子量ポリエチレン50gと
を充分に混合し、得られた混合物をビーカーに入
れ、これを前もつて170℃に設定したオーブン中
に設置し1時間加熱した。次いで、オーブン中か
ら取出したビーカーを約5分間水冷し、ビーカー
の形状と同じ形状の固体状の潤滑性組成物を得
た。この潤滑性組成物は、室温下でも潤滑油が滲
み出るものであつた。 この実施例2で得られた自己潤滑性組成物につ
いて、低速高荷重で動く製鉄設備のライナーをシ
ユミレートして作つたライナー試験装置を使用
し、実際のライナー装置と同じ条件でライナーの
寿命テストを行つた。結果は、グリースを用いた
従来品に比べ、その寿命が約10倍にも達した。 実施例 3 実施例1と同じパーヒドロベンジルビフエニル
系潤滑油70gと超高分子量ポリエチレン30gとを
充分に混合し、得られた混合物をベアリングの内
輪と外輪の間に流し込んでこの内外輪の間を埋
め、これを前もつて170℃に設定したオーブン中
に設置し1時間30分加熱した。加熱終了後、オー
ブンから取出して室温で8時間冷却し、内外輪間
に固体状の潤滑性組成物が埋め込まれたベアリン
グを調製することができた。内外輪間に形成され
た潤滑性組成物は内外輪間に配設されたボールの
回転の妨げにならないだけでなく、強度的にも充
分であり、また、長期間に亘つて潤滑油を供給す
ることができるものであつた。 実施例 4 3種類(A、B及びC)の水素化アルキルベン
ゼン系潤滑油(トラクシヨン係数0.07〜0.08、
ISO粘度40℃:Aが10cst.,Bが32cst.及びCが
100cst.)を用意し、各種類A、B又はC60gと実
施例1と同じ超高分子量ポリエチレン30gと二硫
化モリブデン(MoS2)5gとテフロン粉末5g
とを充分に混合し、得られた混合物を28mmφの試
験管に入れ、これを前もつて170℃に設定したオ
ーブン中に設置し2時間加熱した。次いで、オー
ブン中から取出した試験管を約5分間水冷し、硬
くて密な構造を有する3種類(A、B及びC)の
潤滑性組成物を得た。 得られた各潤滑性組成物(A、B及びC)につ
いて、テイムケンテスターを使用し、荷重30Lb、
リング回転数300rpm.、テスト時間:無負荷3分
及び負荷10分の条件で潤滑性能の試験を行い、摩
擦係数とブロツク摩擦量を調べた。 上記潤滑性能試験の結果を、鉱油系潤滑油(ト
ラクシヨン係数:0.05、ISO粘度40℃:Dが
460cst.、Eが150cst.、Fが9.36cst.、Gが28.7cst.
及びHが76.5cst.)を実施例1と同じ超高分子量
ポリエチレンに同量含油させて行つた比較例1の
潤滑性組成物の場合の結果と併せて、第1表に示
す。
[Industrial Application Field] The present invention relates to a self-lubricating composition comprising a lubricating oil and ultra-high molecular weight polyethylene, and particularly relates to a self-lubricating composition that exhibits excellent lubrication performance under conditions of low speed and high load. . [Prior art] Molybdenum disulfide, molybdenum disulfide,
Solid lubricants such as graphite are used, but such solid lubricants lack the wedge effect that lubricating oils have, and provide excellent lubrication performance over a long period of time under conditions of low speed and high load. lubrication in mechanical elements related to transmission devices, such as rotating elements, bearings, various types of sliding bearings, wire ropes, screws, chain drives, gears, etc. It is difficult to continuously and effectively supply lubricating oil to surfaces over a long period of time to provide excellent lubrication performance. Therefore, in the past, as a solution to this problem, self-lubricating methods were developed in which ultra-high molecular weight polyolefins were impregnated with mineral lubricating oil and gelled so that the impregnated mineral lubricating oil oozed out. Compositions (Japanese Patent Publication No. 47-3455) and the like have been proposed. [Problems to be Solved by the Invention] The object of the present invention is to provide a lubricant that has good lubricating oil seepage properties in low-temperature regions and is excellent in terms of friction coefficient and block wear amount under low speed and high load conditions. The object of the present invention is to provide a novel self-lubricating composition that exhibits excellent lubrication performance and can continuously and effectively supply lubricating oil over a long period of time. [Means for Solving the Problems] That is, the present invention provides a method in which the value of the traction coefficient is
10 to 90% by weight of a naphthenic lubricating oil having hydrogenated rings of 0.07 or more, and an ultra-high molecular weight that solidifies and impregnates the above lubricating oil and exhibits lubricity as a result of the impregnated lubricating oil exuding out. It is a self-lubricating composition consisting of 90-10% by weight of polyethylene. The lubricating oil used in the present invention has a traction coefficient (see Japanese Patent Publication No. 60-43391) measured using, for example, a Soda type cylindrical friction tester.
It needs to be 0.07 or more, preferably 0.08 or more. As the value of this traction coefficient increases, the value of the pressure viscosity index also tends to increase, and when this pressure viscosity index is large, the lubrication performance is indicated by the friction coefficient and block wear amount under low speed and high load conditions. will improve. Specifically, a lubricating oil that satisfies such a traction coefficient is a mixed oil of dialkyl aromatic hydrocarbon and diallyl alkane (Special Publication No.
40525), polymethyl methacrylate (Japanese Patent Publication No. 48-31828), pivalic acid monoester (Japanese Patent Publication No. 49-11309), halogenated alkylnaphthalene (Japanese Patent Publication No. 49-16900), adamantanes (Japanese Patent Publication No. 49-16900), Publication No. 48-41067 and Special Publication No. 48-42068
Publication No.) and alkylnaphthalenes (U.S. Patent No.
2549377 specification), etc.
Dicyclohexylethane (Special Publication No. 1973-
29715), dicyclohexylpropane (Japanese Patent Publication No. 53-36105), hydrogenated condensed ring compounds (U.S. Pat. No. 3,411,369), naphthenes having one or more saturated carbon-containing cyclic rings (U.S. Pat. No. 3,411,369),
3440894), naphthenes with two or more saturated carbon-containing cyclic rings (US Pat. No. 3925217)
(specification), mixed oil of naphthene and paraffin (U.S. Pat. No. 3,595,796 and U.S. Pat. No. 3,595,797), mainly 1,1 obtained by hydrogenating the alkylation reaction product of xylene and/or toluene and styrene. - Those consisting of diallylethane compounds (JP-A-55-43108) and other naphthenic oils (JP-A-55-40726, JP-A-55-60595)
No., JP-A-57-172992, JP-A-57-172993, JP-A-58-122994, and JP-A-58-
27838 and Japanese Patent Publication No. 60-43391, etc.), preferably naphthenic oils having hydrogenated rings such as hydrogenated benzylbiphenyl, hydrogenated dibenzyltoluene, and hydrogenated alkylbenzene are used. be. In addition, in order to increase the value of the traction coefficient in the above lubricating oil, for example, JP-A-61
In addition to adding additives that can improve the traction coefficient, such as cyclohexyl (meth)acrylate polymers as described in Publication No. 19697, various performances required for general lubricating oils can be added. For example, oxidation stability, rust prevention,
Improved viscosity index, defoaming, corrosion resistance, abrasion resistance,
In order to impart and improve rubber swelling properties, for example, alkylphenols such as 2,6-di-tert-butyl-p-cresol, antioxidants such as sulfur and phosphorus compounds such as zinc dialkyldithiophosphate, amines, Rust preventive agents such as esters and metal salts, viscosity index improvers, antifoaming agents such as silicone polymers, and other anticorrosion agents, antifriction agents, rubber swelling agents, etc. can be added. Further, the ultra-high molecular weight polyethylene used in the present invention has an average molecular weight of about 1 x 10 6 or more, preferably about 2 x 10 6 to 5 x 10 6 , and even if it is made of trialkylaluminum and titanium chloride. It can be produced by the Ziegler method (low pressure method), etc., in which ethylene is subjected to liquid phase polymerization under normal pressure using a Ziegler catalyst of the following type. Such ultra-high molecular weight polyethylene can be solidified and impregnated with the above-mentioned lubricating oil, and also exhibits self-lubricating properties, and when applied to various machine elements, the impregnated lubricating oil oozes out. It can exhibit lubricity as a material. Furthermore, when producing a self-lubricating composition from the above-mentioned lubricating oil and ultra-high molecular weight polyethylene, the blending ratio of the two should be determined based on the amount of lubricant retained and the mechanical strength required for the self-lubricating composition produced. , hardness, dimensional stability, etc., but usually lubricants are
90% by weight, preferably 20-70% by weight, and 90-10% by weight, preferably ultra-high molecular weight polyethylene.
It is 80-30% by weight. Furthermore, in the self-lubricating composition of the present invention, a solid lubricant such as molybdenum disulfide or Teflon may be used to improve its lubricity, mechanical strength, hardness, dimensional stability, flame retardance, stability, etc. Various additives, such as glass fibers, diatomaceous earth, nylon powder, dyes, pigments, stabilizers, flame retardants, etc., can be added, usually within a range of 10% by weight or less. In producing the self-lubricating composition of the present invention, first, the above-mentioned lubricating oil, ultra-high molecular weight polyethylene, and additives added as necessary are blended in a predetermined ratio, mixed uniformly, and then It is heated at 250°C, preferably in the range of 150 to 200°C to gel and solidify into a desired shape. At this time, by changing the blending ratio of each of the above raw materials, jelly-like, semi-solid,
Not only can it be formed into a solid shape, but also the amount of lubricating oil that oozes out can be adjusted depending on the amount of lubricating oil blended. [Example] Hereinafter, the self-lubricating composition of the present invention will be specifically explained based on Examples. Example 1 Perhydrobenzylbiphenyl lubricating oil (traction coefficient: 0.09, ISO viscosity 40°C: 68 cst.) 70
g and 30 g of ultra-high molecular weight polyethylene with an average molecular weight of 3 x 10 6 and the resulting mixture was
The mixture was placed in a φ test tube, placed in an oven previously set at 170°C, and heated for 2 hours. Next, the test tube taken out from the oven was cooled with water for about 5 minutes to obtain a lubricating composition that solidified into a jelly-like form and exuded lubricating oil. Example 2 50 g of perhydrodibenzyltoluene-based lubricating oil (traction coefficient: 0.09, ISO viscosity 40°C: 8 cst.)
and 50 g of the same ultra-high molecular weight polyethylene as in Example 1 were thoroughly mixed, the resulting mixture was placed in a beaker, placed in an oven previously set at 170°C, and heated for 1 hour. Next, the beaker taken out from the oven was cooled with water for about 5 minutes to obtain a solid lubricating composition having the same shape as the beaker. This lubricating composition exuded lubricating oil even at room temperature. The self-lubricating composition obtained in Example 2 was subjected to a liner life test under the same conditions as the actual liner equipment using a liner testing device that simulated the liner of steel manufacturing equipment that operates at low speed and high load. I went. As a result, the product's lifespan is approximately 10 times longer than that of conventional products that use grease. Example 3 70 g of the same perhydrobenzylbiphenyl lubricating oil as in Example 1 and 30 g of ultra-high molecular weight polyethylene were thoroughly mixed, and the resulting mixture was poured between the inner and outer rings of a bearing. This was placed in an oven previously set at 170°C and heated for 1 hour and 30 minutes. After heating, the bearing was taken out from the oven and cooled at room temperature for 8 hours, thereby producing a bearing in which a solid lubricating composition was embedded between the inner and outer rings. The lubricating composition formed between the inner and outer rings not only does not interfere with the rotation of the balls disposed between the inner and outer rings, but also has sufficient strength and supplies lubricating oil for a long period of time. It was something that could be done. Example 4 Three types (A, B, and C) of hydrogenated alkylbenzene-based lubricating oil (traction coefficient 0.07-0.08,
ISO viscosity 40℃: A is 10cst., B is 32cst. and C is
100 cst.), 60 g of each type A, B, or C, 30 g of the same ultra-high molecular weight polyethylene as in Example 1, 5 g of molybdenum disulfide (MoS 2 ), and 5 g of Teflon powder.
The resulting mixture was placed in a 28 mm diameter test tube, placed in an oven previously set at 170°C, and heated for 2 hours. Next, the test tubes taken out from the oven were cooled with water for about 5 minutes to obtain three types of lubricating compositions (A, B, and C) having hard and dense structures. For each of the obtained lubricating compositions (A, B, and C), using a Teimken tester, a load of 30 Lb,
A lubrication performance test was conducted under the conditions of a ring rotation speed of 300 rpm and a test time of 3 minutes without load and 10 minutes with load, and the friction coefficient and amount of block friction were investigated. Based on the results of the above lubrication performance test, mineral oil-based lubricant (traction coefficient: 0.05, ISO viscosity 40℃: D
460cst., E is 150cst., F is 9.36cst., G is 28.7cst.
Table 1 shows the results for the lubricating composition of Comparative Example 1 in which the same ultra-high molecular weight polyethylene as in Example 1 was impregnated with the same amount of oil (H = 76.5 cst.).

【表】 さらに、上記各潤滑性組成物を径1/2インチ、
長さ5mmの小片にし、一定温度に保たれたオーブ
ン中に60分間保持することにより温度(℃)と油
滲み出し量(mg)との関係を調べた。この実施例
4に係る潤滑性組成物(A、B及びC)は、28℃
前後でAが19mg、Bが12mg、Cが9mgであるのに
対し、比較例1の各潤滑性組成物(D、EF、G
及びH)はいずれも2〜4mgであり、各比較例1
の潤滑性組成物の場合に比べ、低温での油滲み出
し性が良好であることが判明した。また、80℃前
後の高温時では、比較例1の潤滑性組成物(D、
EF、G及びH)はいずれも40〜100mgであつて温
度の上昇に伴つて急激に増大するのに対し、この
実施例4の潤滑性組成物(A、B及びC)はいず
れも20mg前後であり、油滲み出し量が比較的安定
しているのが認められた。 実施例 5 実施例1と同じパーヒドロジベンジルビフエニ
ル系潤滑油50gと超高分子量ポリエチレン40gと
二硫化モリブデン(MoS2)5gとテフロン粉末
5gとを充分に混合し、得られた混合物を28mmφ
の試験管に入れ、これを前もつて170℃に設定し
たオーブン中に設置し2時間加熱した。次いで、
オーブン中から取出した試験管を約5分間水冷
し、硬く密な構造を有する潤滑性組成物を得た。 得られた潤滑性組成物をリングへ2Kgfの力で
押付け、テイムケンテスターを使用し、荷重を
30Lb、60Lb及び90Lbの3段階で変化させ、リン
グ回転数35rpm.、テスト時間:無負荷3分及び
負荷7分の条件で潤滑性能の試験を行い、荷重の
変化に対する摩擦係数とブロツク摩耗量を調べ
た。 上記潤滑性能試験の結果を、パラフイン系鉱油
(ISO粘度40℃:68cst.)を使用して行つた比較例
2の潤滑性組成物の場合の結果と併せて、第2表
に示す。
[Table] Furthermore, each of the above lubricating compositions was added to
The relationship between the temperature (°C) and the amount of oil oozing out (mg) was investigated by cutting into small pieces with a length of 5 mm and keeping them in an oven maintained at a constant temperature for 60 minutes. The lubricating compositions (A, B and C) according to this Example 4 were prepared at 28°C.
Before and after, A was 19 mg, B was 12 mg, and C was 9 mg, whereas each lubricating composition of Comparative Example 1 (D, EF, G
and H) are both 2 to 4 mg, and each Comparative Example 1
It was found that the oil bleed-out property at low temperatures was better than that of the lubricating composition. In addition, at high temperatures of around 80°C, the lubricating composition of Comparative Example 1 (D,
EF, G, and H) are all 40 to 100 mg and rapidly increase as the temperature rises, whereas the lubricating compositions of Example 4 (A, B, and C) are all around 20 mg. It was observed that the amount of oil seeping out was relatively stable. Example 5 50 g of the same perhydrodibenzyl biphenyl lubricating oil as in Example 1, 40 g of ultra-high molecular weight polyethylene, 5 g of molybdenum disulfide (MoS 2 ), and 5 g of Teflon powder were thoroughly mixed, and the resulting mixture was heated to a diameter of 28 mm.
This was placed in an oven previously set at 170°C and heated for 2 hours. Then,
The test tube taken out from the oven was cooled with water for about 5 minutes to obtain a lubricating composition having a hard and dense structure. The obtained lubricating composition was pressed onto the ring with a force of 2 kgf, and the load was applied using a Teimken tester.
A lubrication performance test was conducted under the following conditions: 30Lb, 60Lb, and 90Lb, with a ring rotation speed of 35 rpm, and a test time of 3 minutes without load and 7 minutes with load. Examined. The results of the above lubrication performance test are shown in Table 2 together with the results of the lubricating composition of Comparative Example 2, which was conducted using paraffin mineral oil (ISO viscosity 40° C.: 68 cst.).

【表】 [発明の効果] 本発明の自己潤滑性組成物は、低温領域での潤
滑油の滲み出し性が良好であつて低速高荷重の条
件下で優れた潤滑性能を発揮すると共に、長時間
に亘つて継続的かつ効果的に潤滑油を供給し得る
ものである。
[Table] [Effects of the Invention] The self-lubricating composition of the present invention has good lubricating oil oozing properties in low temperature ranges, exhibits excellent lubrication performance under low speed and high load conditions, and has a long lifespan. It is capable of continuously and effectively supplying lubricating oil over time.

Claims (1)

【特許請求の範囲】[Claims] 1 トラクシヨン係数0.07以上の水素化された環
を有するナフテン系潤滑油10〜90重量%と、固形
化して上記潤滑油を含浸すると共にこの含浸され
た潤滑油が滲み出る結果として潤滑性を発揮する
超高分子量ポリエチレン90〜10重量%とからなる
ことを特徴とする自己潤滑性組成物。
1 10 to 90% by weight of naphthenic lubricating oil having a hydrogenated ring with a traction coefficient of 0.07 or more, which solidifies and impregnates the above lubricating oil, and exhibits lubricity as a result of the impregnated lubricating oil oozing out. A self-lubricating composition comprising 90 to 10% by weight of ultra-high molecular weight polyethylene.
JP21724286A 1986-09-17 1986-09-17 Self-lubricating composition Granted JPS6372791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21724286A JPS6372791A (en) 1986-09-17 1986-09-17 Self-lubricating composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21724286A JPS6372791A (en) 1986-09-17 1986-09-17 Self-lubricating composition

Publications (2)

Publication Number Publication Date
JPS6372791A JPS6372791A (en) 1988-04-02
JPH0367559B2 true JPH0367559B2 (en) 1991-10-23

Family

ID=16701079

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21724286A Granted JPS6372791A (en) 1986-09-17 1986-09-17 Self-lubricating composition

Country Status (1)

Country Link
JP (1) JPS6372791A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63161075A (en) * 1986-12-25 1988-07-04 Nippon Steel Chem Co Ltd Extrusion or injection moldable self-lubricating composition
JP2001271082A (en) * 2000-03-24 2001-10-02 Nsk Ltd How to use lubricating members for food machinery

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55137198A (en) * 1979-04-13 1980-10-25 Ntn Toyo Bearing Co Ltd Lubricating composition for ball-and-roller bearing
JPS59194841A (en) * 1983-04-21 1984-11-05 旭化成株式会社 Extra-high molecular weight polyethylene composite sheet

Also Published As

Publication number Publication date
JPS6372791A (en) 1988-04-02

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