JPH0216193A - Silicone greaser composition having excellent lubricity - Google Patents

Silicone greaser composition having excellent lubricity

Info

Publication number
JPH0216193A
JPH0216193A JP16486888A JP16486888A JPH0216193A JP H0216193 A JPH0216193 A JP H0216193A JP 16486888 A JP16486888 A JP 16486888A JP 16486888 A JP16486888 A JP 16486888A JP H0216193 A JPH0216193 A JP H0216193A
Authority
JP
Japan
Prior art keywords
silicone
grease
melamine
iso
oil
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.)
Granted
Application number
JP16486888A
Other languages
Japanese (ja)
Other versions
JP2774282B2 (en
Inventor
Yukio Nakanishi
中西 幸夫
Masanori Tsuchiya
土谷 正憲
Hiroshi Kimura
浩 木村
Toshiaki Endo
敏明 遠藤
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.)
KYODO YUSHI KK
Kyodo Yushi Co Ltd
Original Assignee
KYODO YUSHI KK
Kyodo Yushi Co Ltd
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 KYODO YUSHI KK, Kyodo Yushi Co Ltd filed Critical KYODO YUSHI KK
Priority to JP63164868A priority Critical patent/JP2774282B2/en
Publication of JPH0216193A publication Critical patent/JPH0216193A/en
Application granted granted Critical
Publication of JP2774282B2 publication Critical patent/JP2774282B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To improve lubricating performance on steel-steel sliding to substantially the same level as that of a mineral oil grease, by adding a melamine/(iso) cyanuric acid adduct and polytetrafluoroethylene as thickening agents to a silicone oil. CONSTITUTION:The title silicone grease compsn. is prepared by adding 25-150pts. wt. solid lubricant as a thickening agent to 100pts.wt. base oil comprising as an active ingredient a silicone oil, such as dimethylsilicone, methylphenysilicone or a modified silicone contg. an amino group, a polyether group or a fluorine atom. The solid lubricant comprises a melamine/(iso)cyanuric acid adduct and polytetrafluoroethylene in a wt. ratio of 95:5-10:90.

Description

【発明の詳細な説明】 (産業上の利用分野) 近年の機械技術の進歩は著しく、機械部品の小型化、軽
量化および高効率化による軸受の高速化が進み、潤滑箇
所が高温となる傾向がある。
[Detailed Description of the Invention] (Industrial Application Field) Mechanical technology has made remarkable progress in recent years, and bearings have become faster due to the miniaturization, weight reduction, and higher efficiency of mechanical parts, and there is a tendency for lubrication points to become hotter. There is.

また、機械そのものの使用が、世界的規模におよぶため
、寒冷地に対しての対策も必要である。
Furthermore, since the machines themselves are used on a global scale, measures must be taken to cope with cold regions.

さらに、最近は、メンテナンスフリー化や省資源といっ
た考え方が浸透し、軸受の密゛封化が進んでいる。この
密封軸受は、初めに充填したグリースで、途中補給する
ことなく、機械寿命まで使用に耐えることを必要とする
。このため、潤滑剤であるグリースに対してもこれらの
要求、すなわち、低温から高温まで広温度範囲で使用で
き、かつ長寿命を有する事を満足する必要に迫られてい
る。
Furthermore, recently, the idea of maintenance-free bearings and resource saving has become widespread, and bearings are becoming more sealed. This sealed bearing needs to be able to withstand use for the life of the machine with the initially filled grease without replenishing it midway. Therefore, it is necessary for grease, which is a lubricant, to satisfy these requirements, that is, to be usable in a wide temperature range from low to high temperatures, and to have a long life.

本発明は、このような要求に応える潤滑性に優れるシリ
コーングリース組成物に関するものである。
The present invention relates to a silicone grease composition with excellent lubricity that meets these demands.

(従来の技術) グリースの耐熱性で、その物理的変化に対するものは、
増ちょう剤の種類、組成にも依存するが、その他の耐熱
性の項目、即ち、蒸発、酸化安定性や、低温性は、グリ
ースの使用している基油に依存するところが大きい。現
在、市場にある多くのグリースは、鉱油を基油としてい
る。鉱油は、−般に高温にある程度耐え得るものは、流
動点が高い等、低温性に劣り、低温性に優れるものは、
蒸発が大きく酸化安定性に劣る等、高温での使用に耐え
得ない。この為、このような広範囲の温度で使用可能な
グリースの基油には、合成油を使用する事が通常である
。グリースの基油として使用される代表的な合成油とし
ては、ジエステル、テトラエステルに代表されるエステ
ル系合成油、ポリアルファーオレフィン油、シリコーン
油、フッ素化油等が掲げられる。これは、いずれも流動
点が低く、良好な低温性を示すが、エステル系合成油、
ポリαオレフィン油は、シリコーン油やフッ素化油に比
べ、耐熱性で劣る。またフッ素化油は、シリコーン油に
比べ、現状で、かなり割高になる事より、広温度範囲で
使用するグリースの基油としては、シリコーン油が最適
と言う事ができる。
(Prior art) The heat resistance of grease against physical changes is as follows:
Although it depends on the type and composition of the thickener, other heat resistance items, such as evaporation and oxidation stability, and low-temperature properties, largely depend on the base oil used in the grease. Many greases currently on the market are based on mineral oil. Generally speaking, mineral oils that can withstand high temperatures to some extent have poor low-temperature properties, such as those with a high pour point, while those that have excellent low-temperature properties have
It cannot withstand use at high temperatures due to large evaporation and poor oxidation stability. For this reason, synthetic oils are usually used as base oils for greases that can be used over a wide range of temperatures. Typical synthetic oils used as base oils for grease include ester-based synthetic oils represented by diesters and tetraesters, polyalphaolefin oils, silicone oils, fluorinated oils, and the like. All of these oils have low pour points and exhibit good low-temperature properties, but ester-based synthetic oils,
Poly-α-olefin oil has inferior heat resistance compared to silicone oil and fluorinated oil. Furthermore, since fluorinated oils are currently considerably more expensive than silicone oils, silicone oils can be said to be optimal as base oils for greases used over a wide temperature range.

(発明が解決しようとする課題) しかし、シリコーングリースなど、シリコーン油を潤滑
目的で使用する場合に、最大の欠点は、鋼−網間のすべ
りに対する潤滑性能に劣る事である。シリコーングリー
スが、広い温度範囲で使用が可能であるのに、さして−
船釣でないのは、偏に、この潤滑性に劣るという欠点を
有する為と述べても過言ではなく、鉱油程度の潤滑性能
を有するのであれば、汎用のグリースとなり得る。
(Problems to be Solved by the Invention) However, when silicone oil such as silicone grease is used for lubricating purposes, the biggest drawback is that the lubricating performance against sliding between steel and mesh is poor. Although silicone grease can be used over a wide temperature range,
It is no exaggeration to say that the reason why it is not used for boat fishing is because it has the disadvantage of poor lubricity; if it has lubrication performance comparable to mineral oil, it can be used as a general-purpose grease.

従って本発明は、シリコーングリースの特徴である、良
好な低温性、耐熱性を損うことな(、銅鋼間のすべりに
対する潤滑性能を鉱油系グリース程度まで向上させ、広
温度範囲で使用でき、長寿命という要求に対し応える潤
滑特性に優れるシリコーングリースを提供することを目
的とする。
Therefore, the present invention improves the lubrication performance against sliding between copper and steel to the level of mineral oil-based grease, and can be used in a wide temperature range without impairing the good low temperature properties and heat resistance that are the characteristics of silicone grease. The purpose of this invention is to provide a silicone grease with excellent lubrication properties that meets the demand for long life.

(課題を解決するための手段) 上記目的を満足する本発明の潤滑性に優れるシリコーン
グリース組成物は、シリコーン油を有効成分とした基油
100重量部に対して、増ちょう剤としての固体潤滑剤
を25〜150重量部含有せしめてなり、該固体潤滑剤
が、メラミン(イソ)シアヌル酸付加物とポリテトラフ
ルオロエチレンを必須成分とし各々の重量比が95 :
5ないしlO:90であることを特徴とする。
(Means for Solving the Problems) The silicone grease composition of the present invention, which satisfies the above objects and has excellent lubricity, is a solid lubricant as a thickener for 100 parts by weight of a base oil containing silicone oil as an active ingredient. The solid lubricant contains 25 to 150 parts by weight of a melamine (iso)cyanuric acid adduct and polytetrafluoroethylene as essential components, and the weight ratio of each is 95:
5 to 90 lO.

本発明におけるシリコーン油とは、ジメチルシリコーン
油、メチルフェニルシリコーン油等のストレートシリコ
ーン油およびアルキル基、アミノプロピル基、ポリエー
テル基およびフン素等を含有した変性シリコーン油であ
る。また、メラミン(イソ)シアヌル酸付加物とはメラ
ミンとシアヌル酸の付加物およびメラミンとイソシアヌ
ル酸の付加物の総称である。メラミン(イソ)シアヌル
酸付加物は、固体潤滑剤として公知の物質であり昇華温
度は約440°Cで熱的、化学的に安定な化合物であり
、詳細は特開昭54−141792号公報に記載されて
いる。ここで、シアヌル酸とイソシアヌル酸は、互いに
異性体の関係にあり、通常市販されているものは、ケト
型のイソシアヌル酸である。
The silicone oil in the present invention refers to straight silicone oils such as dimethyl silicone oil and methylphenyl silicone oil, and modified silicone oils containing alkyl groups, aminopropyl groups, polyether groups, fluorine, and the like. Further, melamine (iso)cyanuric acid adduct is a general term for an adduct of melamine and cyanuric acid and an adduct of melamine and isocyanuric acid. Melamine (iso)cyanuric acid adduct is a substance known as a solid lubricant, and is a thermally and chemically stable compound with a sublimation temperature of about 440°C. Details can be found in JP-A-54-141792. Are listed. Here, cyanuric acid and isocyanuric acid have an isomer relationship with each other, and what is usually commercially available is keto-type isocyanuric acid.

したがって、メラミンシアヌル酸付加物は、イソシアヌ
ル酸を使用したメラミンイソシアヌル酸付加物が、一般
に市販されている。
Therefore, melamine isocyanuric acid adducts using isocyanuric acid are generally commercially available.

また、ポリテトラフルオロエチレンとは、成形用として
のモールディングパウダー、乳化重合・懸濁重合によっ
て得られたファインパウダー等であり、主に白色の粉体
である。これらは、融点が、約320℃で熱的・化学的
に安定な化合物である。
Moreover, polytetrafluoroethylene is a molding powder for molding, a fine powder obtained by emulsion polymerization/suspension polymerization, etc., and is mainly a white powder. These are thermally and chemically stable compounds with a melting point of about 320°C.

所で前記シリコーン油に前記ポリテトラフルオロエチレ
ンを単独に加えてもグリースになるが、前記メラミン(
イソ)シアヌル酸付゛加物は単独では増ちょう効果がな
く均一なグリースにはならない。
By the way, even if the polytetrafluoroethylene is added alone to the silicone oil, it becomes a grease, but the melamine (
Iso)cyanuric acid additives alone have no thickening effect and do not form a uniform grease.

然るにこの両固体潤滑剤を特定の比率で併用すると優れ
た増ちょう効果を示して、均一で安定なグリースになる
。一方、共に耐熱性の優れた両固体潤滑剤を特定の比率
に併用する事によって、特に耐熱性の優れたメラミン(
イソ)シアヌル酸付加物の作用によって、優れた高温潤
滑性を発揮するのである。これらの事は本発明者が研究
の結果見出したものである。
However, when these two solid lubricants are used together in a specific ratio, they exhibit an excellent thickening effect, resulting in a uniform and stable grease. On the other hand, by using both solid lubricants, both of which have excellent heat resistance, in a specific ratio, melamine, which has particularly excellent heat resistance (
It exhibits excellent high-temperature lubricity due to the action of the iso)cyanuric acid adduct. These things were discovered by the present inventor as a result of research.

さらに、本発明におけるシリコーングリース組成物には
、酸化防止剤、防錆剤および、グラファイトに代表され
る潤滑性をさらに向上させる為の固体潤滑剤を使用する
事ができる。
Further, the silicone grease composition of the present invention may contain antioxidants, rust preventives, and solid lubricants such as graphite to further improve lubricity.

(作 用) 本発明によるシリコーングリース組成物は、増ちょう剤
として、熱的・化学的に安定な固体潤滑剤であるメラミ
ン(イソ)シアヌル酸付加物と、ポリテトラフルオロエ
チレンを併用する事で、シリコーン油木来の低温性およ
び耐熱性を損ねることなしに、鋼−゛網間のすべりに対
する潤滑性能を鉱油系グリースと同等以上に向上し得た
。又それらの混合比は、メラミン(イソ)シアヌル酸付
加物と、ポリテトラフルオロエチレンが重量比で95=
5ないし10 : 90であることが条件である。ここ
で、増ちょう剤としての固体潤滑剤が、メラミン(イソ
)シアヌル酸付加物のみ、又はポリテトラフルオロエチ
レンが重量比で5重量%未満であると、グリースとして
の均質性が得られないため、増らよう剤として適さない
。また、ポリテトラフルオロエチレンのみ、又はメラミ
ン(イソ)シアヌル酸付加物が重量比で10重量%未満
であると、鋼−網間のすべり潤滑性能を鉱油系グリース
と同等に向上し得す、目的を達し得ないため、両者を併
用することで、解決に至った。
(Function) The silicone grease composition according to the present invention uses a melamine (iso)cyanuric acid adduct, which is a thermally and chemically stable solid lubricant, in combination with polytetrafluoroethylene as a thickener. The lubricating performance against steel-to-grid slippage was improved to a level equal to or higher than that of mineral oil-based grease, without impairing the low-temperature properties and heat resistance of the silicone oil. The mixing ratio of the melamine (iso)cyanuric acid adduct and polytetrafluoroethylene is 95=95 by weight.
The condition is that the ratio is 5 to 10:90. Here, if the solid lubricant as a thickener contains only melamine (iso)cyanuric acid adduct or polytetrafluoroethylene in a weight ratio of less than 5%, homogeneity as a grease cannot be obtained. , not suitable as a thickening agent. In addition, if polytetrafluoroethylene alone or melamine (iso)cyanuric acid adduct is less than 10% by weight, the sliding lubrication performance between steel and mesh can be improved to the same level as mineral oil-based grease. Since this could not be achieved, a solution was reached by using both together.

シリコーングリースの潤滑性能を向上させるためには、
極圧添加剤や耐摩耗剤の添加も考えられるが、通常の鉱
油系グリースには効果が認められるこれらの添加剤も、
シリコーングリースには効果が認められない場合が多い
。さらに、効果の認められる場合でも、これらの添加剤
は、熱による分解生成物が、金属表面に作用し、潤滑性
能を向上させる為、その分解生成物が、グリースの劣化
を促進する事になる。即ち、極圧添加剤や耐摩耗剤の分
解温度が、そのままグリースの耐熱温度になってしまう
為、高温での使用を考えたシリコーングリースに適用す
る事はできない。また、ポリテトラフルオロエチレン、
メラミン(イソ)シアヌル酸以外の固体潤滑剤の使用も
例外ではなく、例えば、モリブデンジチオカーバメイト
は、粉体ではあるが、作用機構は、耐摩耗剤のものであ
るし、二硫化モリブデンは、それ自体400°Cまで酸
化に対し安定と言われているが、本発明者等の検討では
、二硫化モリブデンを添加したシリコーングリースは、
200 ’Cでの使用ができないとの結果を得ている。
To improve the lubrication performance of silicone grease,
Addition of extreme pressure additives and anti-wear agents may also be considered, but these additives, which are found to be effective in ordinary mineral oil greases,
Silicone grease is often ineffective. Furthermore, even if they are effective, the thermal decomposition products of these additives act on the metal surface and improve the lubricating performance, so the decomposition products accelerate the deterioration of the grease. . That is, the decomposition temperature of extreme pressure additives and anti-wear agents becomes the heat-resistant temperature of the grease, so it cannot be applied to silicone greases intended for use at high temperatures. Also, polytetrafluoroethylene,
The use of solid lubricants other than melamine (iso)cyanuric acid is no exception; for example, although molybdenum dithiocarbamate is a powder, its mechanism of action is that of an anti-wear agent, and molybdenum disulfide is Although it is said that silicone grease itself is stable against oxidation up to 400°C, the present inventors have found that silicone grease containing molybdenum disulfide is
The results show that it cannot be used at 200'C.

これは、200 ’Cの温度下で、僅かながら生成した
、硫黄を含む二硫化モリブデンの酸化、分解生成物が、
シリコーングリースを劣化させたと推察できる。本発明
において使用するポリテトラフルオロエチレンとメラミ
ン(イソ)シアヌル酸付加物は、耐熱性にも優れており
、少なくとも200″Cまでは、シリコーングリースを
劣化させることはない。
This is due to the oxidation and decomposition products of molybdenum disulfide containing sulfur, which are generated in a small amount at a temperature of 200'C.
It can be inferred that this caused the silicone grease to deteriorate. The polytetrafluoroethylene and melamine (iso)cyanuric acid adduct used in the present invention also has excellent heat resistance, and does not deteriorate silicone grease up to at least 200''C.

(実施例) 以下に、本発明を実施例に基付き、具体的に説明する。(Example) The present invention will be specifically explained below based on Examples.

尚、例中の「部」は特記しない限り重量部を表わす。In addition, "parts" in the examples represent parts by weight unless otherwise specified.

表1に実施例及び比較例の配合を示す。表1のグリース
は以下の方法でNLGIグレードN032に調整した。
Table 1 shows the formulations of Examples and Comparative Examples. The grease in Table 1 was adjusted to NLGI grade N032 by the following method.

12および   3〜7 表1に示したシリコーン油全量に、増ちょう剤となる固
体潤滑剤を全量加え、均一に撹拌した。
12 and 3 to 7 The entire amount of solid lubricant serving as a thickener was added to the entire amount of silicone oil shown in Table 1, and the mixture was uniformly stirred.

これを3段ロールミルにて混練し、目的のグリースとし
た。
This was kneaded in a three-roll mill to obtain the desired grease.

、比較10= 鉱油300部にリチウムステアレート全量を加え、撹拌
しながら昇温した。200〜220″Cでリチウムステ
アレートは鉱油に完全溶解するので加熱を止め、鉱油1
10部を加えた。冷却後、3段ロールミルにて混練し、
目的のグリースとした。
, Comparison 10 = The entire amount of lithium stearate was added to 300 parts of mineral oil, and the temperature was raised while stirring. Lithium stearate completely dissolves in mineral oil at 200-220"C, so stop heating and add mineral oil 1
Added 10 parts. After cooling, knead in a three-roll mill,
It was used as a grease for the purpose.

↓団■) メチルフェニルシリコーン油250部にリチウム(12
−ハイドロキシ)ステアレート全量を加え、撹拌しなが
ら昇温した。200″Cで加熱を止め、メチルフェニル
シリコーン油190部を加えた。冷却後、3段ロールミ
ルにて混練し、目的のグリースとした。
↓ Group ■) Lithium (12 parts) to 250 parts of methylphenyl silicone oil
-Hydroxy)stearate was added, and the temperature was raised while stirring. Heating was stopped at 200''C, and 190 parts of methylphenyl silicone oil was added. After cooling, the mixture was kneaded in a three-roll mill to obtain the desired grease.

表1に示す基油の動粘度と、温度粘度係数又は粘度指数
は、次のものを使用した。
The following kinematic viscosity and temperature viscosity coefficient or viscosity index of the base oil shown in Table 1 were used.

メチルフェニルシリコーン油−・−・−・−・25°C
の動粘度450cSL、  温度粘度係数 0.82 ジメチルシリコーン油−・−・−・−25℃の動粘度5
00cSt、  温度粘度係数0.60鉱 油−−−−
−−−40”Cの動粘度101.0cSt。
Methylphenyl silicone oil-・-・-・-・25°C
Kinematic viscosity of 450cSL, temperature viscosity coefficient of 0.82, dimethyl silicone oil - Kinematic viscosity of -25℃ 5
00cSt, temperature viscosity coefficient 0.60 mineral oil------
---40"C kinematic viscosity 101.0 cSt.

粘度指数98 また、表1にて使用した固体潤滑剤は、表2の通りであ
る。
Viscosity index: 98 The solid lubricants used in Table 1 are as shown in Table 2.

さらに、上記実施例1.2および比較例1〜7のグリー
スにつき以下に示す測定方法により性状を評価し得た結
果を表1に併記する。
Furthermore, the properties of the greases of Example 1.2 and Comparative Examples 1 to 7 were evaluated using the measurement method shown below, and the results are also listed in Table 1.

ちょう度−・・−・・・・−JIS K 2220によ
る。
Consistency: Based on JIS K 2220.

チムケンOK値(塗布法)−・−・・−JIS K 2
220に準拠する。但し、グリースはカップ及 びブロックに約1gを塗布し、途中で の給脂は行なわない。
Chimken OK value (application method)--JIS K 2
Compliant with 220. However, approximately 1 g of grease is applied to the cup and block, and no greasing is performed during the process.

低温トルク −・−・JIS K 2220による。Low temperature torque - - Based on JIS K 2220.

高温薄膜試験−・・−60X80X1 mmの5pcc
鋼板にグリースを約21の厚さで均一に塗 布し、200℃の恒温槽に静置し、 500hr後の外観、ちょう度、蒸発減量を測定する。
High temperature thin film test--5pcc of 60X80X1 mm
Grease is uniformly applied to a steel plate to a thickness of approximately 21 mm, placed in a constant temperature bath at 200°C, and the appearance, consistency, and evaporation loss are measured after 500 hours.

軸受潤滑寿命・−−−−−−ASTM D 1741に
準拠、試験温度を210″Cとして試験する。
Bearing lubrication life - Tested in accordance with ASTM D 1741 at a test temperature of 210''C.

表1に示す結果の通り、本発明による実施例1゜2は、
チムケン試験で比較例1に示す鉱油系グリースと同様の
潤滑性能を示した。さらに低温トルク、高温薄膜試験に
おいても良好な値を示し、軸受潤滑寿命試験でも長寿命
を示すごとが確認された。
As shown in Table 1, Examples 1 and 2 according to the present invention were as follows:
It showed the same lubricating performance as the mineral oil grease shown in Comparative Example 1 in the Chimken test. Furthermore, it showed good values in low-temperature torque and high-temperature thin film tests, and was confirmed to have a long life in bearing lubrication life tests.

これに対し、比較例1の鉱油系グリースは低温性・耐熱
性共に劣り、高温下での潤滑寿命も極端に短かい。比較
例2は、リチウム石けんを増ちょう剤としたシリコーン
グリースであるが、耐熱性に劣るため、潤滑寿命が短か
い。これは、増ちょう剤であるリチウム石けんが耐熱性
に劣る為と言える。この増ちょう剤をポリテトラフルオ
ロエチレンに変えた比較例3,4では、低温性・耐熱性
は良好であるが、鋼−鋼量のすべりに対する潤滑性に劣
る。高温下での潤滑寿命が、実施例1,2に比較し、若
干短いのは、この潤滑性に起因する事も考えられる。ま
た、この潤滑性を向上させる為にメラミン(イソ)シア
ヌル酸付加物のみで、シリコーン油を増ちょうした比較
例5は、硬さをNLGIグレードNα2に仕上げる為に
、メラミン(イソ)シアヌル酸付加物を多量に要するだ
げでなく、外観は不均一であり、グリースとして成り得
なかった。これはメラミン(イソ)シアヌル酸付加物の
みを増ちょう剤として使用することが適当でないと結論
づけられる。さらに、固体潤滑剤として、その効果が公
知である二硫化モリブデン、モリブデンジチオカーパイ
メイトとポリテトラフルオロエチレンを併用した比較例
6,7は、潤滑性には優れるが、耐熱性が劣る。これは
、これらの固体潤滑剤の耐熱性が、メラミン(イソ)シ
アヌル酸付加物より劣ること、これら及びこれらの熱に
よる分解生成物が、基油に対しての酸化触媒として働く
こと等が原因として考えられる。したがって、比較例6
,7は、実施例1.2と比較して、非常に短い潤滑寿命
時間となっている。
On the other hand, the mineral oil-based grease of Comparative Example 1 is inferior in both low temperature properties and heat resistance, and has an extremely short lubrication life at high temperatures. Comparative Example 2 is a silicone grease using lithium soap as a thickener, but it has poor heat resistance and has a short lubrication life. This can be said to be because lithium soap, which is a thickener, has poor heat resistance. In Comparative Examples 3 and 4 in which the thickener was changed to polytetrafluoroethylene, the low-temperature properties and heat resistance were good, but the lubricity against steel-to-steel sliding was poor. The reason why the lubrication life at high temperatures is slightly shorter than that of Examples 1 and 2 may be due to this lubricity. In addition, in Comparative Example 5, in which silicone oil was enriched with only melamine (iso) cyanuric acid adduct to improve the lubricity, melamine (iso) cyanuric acid adduct was added to finish the hardness to NLGI grade Nα2. Not only did it require a large amount of material, but its appearance was non-uniform and could not be used as a grease. This leads to the conclusion that it is not appropriate to use only the melamine (iso)cyanuric acid adduct as a thickener. Furthermore, Comparative Examples 6 and 7, in which molybdenum disulfide, molybdenum dithiocarpaimate, and polytetrafluoroethylene, which are known to be effective as solid lubricants, are used in combination have excellent lubricity but poor heat resistance. This is due to the fact that the heat resistance of these solid lubricants is inferior to that of melamine (iso)cyanuric acid adducts, and that these and their thermal decomposition products act as oxidation catalysts for the base oil. It can be considered as Therefore, Comparative Example 6
, 7 has a very short lubrication life time compared to Example 1.2.

(発明の効果) 本発明の効果を示すと次の通りである。本発明のシリコ
ーングリース組成物は、シリコーングリースの特徴であ
る良好な低温性、耐熱性を損なうことなしに、綱−鋼量
のすべりに対する潤滑性能を鉱油系グリースと同等程度
まで向上させた。これによって、広温度範囲で使用でき
、長寿命であるという要求に応えた。
(Effects of the invention) The effects of the invention are as follows. The silicone grease composition of the present invention has improved lubrication performance against steel-to-steel slippage to the same level as mineral oil-based grease, without impairing the good low-temperature properties and heat resistance that characterize silicone greases. This meets the demand for long life and usability over a wide temperature range.

Claims (1)

【特許請求の範囲】[Claims] 1、シリコーン油を有効成分とした基油100重量部に
対して、増ちょう剤としての固体潤滑剤を25〜150
重量部含有せしめてなり、該固体潤滑剤が、メラミン(
イソ)シアヌル酸付加物とポリテトラフルオロエチレン
を必須成分とし、各々の重量比が95:5ないし10:
90であることを特徴とする潤滑性に優れるシリコーン
グリース組成物。
1. Add 25 to 150 parts of a solid lubricant as a thickener to 100 parts by weight of base oil containing silicone oil as an active ingredient.
The solid lubricant contains melamine (
Iso) cyanuric acid adduct and polytetrafluoroethylene are essential components, and the weight ratio of each is 95:5 to 10:
90. A silicone grease composition with excellent lubricity.
JP63164868A 1988-07-04 1988-07-04 Silicone grease composition with excellent lubricity Expired - Lifetime JP2774282B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63164868A JP2774282B2 (en) 1988-07-04 1988-07-04 Silicone grease composition with excellent lubricity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63164868A JP2774282B2 (en) 1988-07-04 1988-07-04 Silicone grease composition with excellent lubricity

Publications (2)

Publication Number Publication Date
JPH0216193A true JPH0216193A (en) 1990-01-19
JP2774282B2 JP2774282B2 (en) 1998-07-09

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ID=15801450

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2774282B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005325182A (en) * 2004-05-12 2005-11-24 Oiles Ind Co Ltd Solid lubricant and sliding member
JP2005324418A (en) * 2004-05-13 2005-11-24 Oiles Ind Co Ltd Slide member and slide vibration isolation apparatus using slide member
JP2007136741A (en) * 2005-11-15 2007-06-07 Oiles Ind Co Ltd SLIP MEMBER, MANUFACTURING METHOD OF THE SLIP MEMBER, AND SLIP SEISMIC ISOLATION DEVICE USING THE SLIP
EP1637579A4 (en) * 2003-05-13 2007-10-03 Oiles Industry Co Ltd Solid lubricant and sliding member
JP2009013351A (en) * 2007-07-06 2009-01-22 Nok Kluber Kk Grease composition
JP2009013350A (en) * 2007-07-06 2009-01-22 Nok Kluber Kk Grease composition
CN115960466A (en) * 2022-12-28 2023-04-14 广东金戈新材料股份有限公司 Thixotropic silicone grease with low thermal resistance and high thermal conductivity and preparation method thereof
WO2026094773A1 (en) * 2024-10-30 2026-05-07 株式会社ハイレックスコーポレーション Grease composition and control cable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5343171A (en) * 1976-09-30 1978-04-19 Shinetsu Chemical Co Silicone grease composition
JPS54141792A (en) * 1978-03-20 1979-11-05 Yuka Melamin Manufacture of melamine cyanuric acid addition product
JPS55110194A (en) * 1979-02-16 1980-08-25 Agency Of Ind Science & Technol Solid lubricant
JPS6112791A (en) * 1984-06-28 1986-01-21 Yuka Meramin Kk Grease containing solid lubricant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5343171A (en) * 1976-09-30 1978-04-19 Shinetsu Chemical Co Silicone grease composition
JPS54141792A (en) * 1978-03-20 1979-11-05 Yuka Melamin Manufacture of melamine cyanuric acid addition product
JPS55110194A (en) * 1979-02-16 1980-08-25 Agency Of Ind Science & Technol Solid lubricant
JPS6112791A (en) * 1984-06-28 1986-01-21 Yuka Meramin Kk Grease containing solid lubricant

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1637579A4 (en) * 2003-05-13 2007-10-03 Oiles Industry Co Ltd Solid lubricant and sliding member
KR101130026B1 (en) * 2003-05-13 2012-03-28 오이레스 고교 가부시끼가이샤 Solid lubricant and sliding member
JP2005325182A (en) * 2004-05-12 2005-11-24 Oiles Ind Co Ltd Solid lubricant and sliding member
JP2005324418A (en) * 2004-05-13 2005-11-24 Oiles Ind Co Ltd Slide member and slide vibration isolation apparatus using slide member
JP2007136741A (en) * 2005-11-15 2007-06-07 Oiles Ind Co Ltd SLIP MEMBER, MANUFACTURING METHOD OF THE SLIP MEMBER, AND SLIP SEISMIC ISOLATION DEVICE USING THE SLIP
JP2009013351A (en) * 2007-07-06 2009-01-22 Nok Kluber Kk Grease composition
JP2009013350A (en) * 2007-07-06 2009-01-22 Nok Kluber Kk Grease composition
CN115960466A (en) * 2022-12-28 2023-04-14 广东金戈新材料股份有限公司 Thixotropic silicone grease with low thermal resistance and high thermal conductivity and preparation method thereof
CN115960466B (en) * 2022-12-28 2024-04-26 广东金戈新材料股份有限公司 Thixotropic silicone grease with low thermal resistance and high thermal conductivity and preparation method thereof
WO2026094773A1 (en) * 2024-10-30 2026-05-07 株式会社ハイレックスコーポレーション Grease composition and control cable

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