JPS6343067A - Thermal sealing material - Google Patents
Thermal sealing materialInfo
- Publication number
- JPS6343067A JPS6343067A JP61186229A JP18622986A JPS6343067A JP S6343067 A JPS6343067 A JP S6343067A JP 61186229 A JP61186229 A JP 61186229A JP 18622986 A JP18622986 A JP 18622986A JP S6343067 A JPS6343067 A JP S6343067A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- temperature
- sealing material
- conductive
- rubber 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
- 239000003566 sealing material Substances 0.000 title claims abstract description 31
- 229920001971 elastomer Polymers 0.000 claims abstract description 61
- 239000005060 rubber Substances 0.000 claims abstract description 61
- 239000000126 substance Substances 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims description 10
- 239000006229 carbon black Substances 0.000 claims description 7
- 239000000565 sealant Substances 0.000 claims 2
- 239000004020 conductor Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 19
- 238000007789 sealing Methods 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract 3
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 229920000459 Nitrile rubber Polymers 0.000 description 8
- 229920000800 acrylic rubber Polymers 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 238000004898 kneading Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229920000058 polyacrylate Polymers 0.000 description 6
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 4
- 239000005062 Polybutadiene Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920001084 poly(chloroprene) Polymers 0.000 description 4
- 229920002857 polybutadiene Polymers 0.000 description 4
- 229920003051 synthetic elastomer Polymers 0.000 description 4
- 239000005061 synthetic rubber Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229920005549 butyl rubber Polymers 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Sealing Of Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、発熱性シール材に関する。更に詳しくは、オ
イルシールなどとして′好適に用いられる発熱性シール
材に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heat-generating sealing material. More specifically, the present invention relates to a heat generating sealing material suitably used as an oil seal or the like.
気の放電現象をひき起こす。そこで、静電気自体に導電
性を付与せしめ、そこに電気回路を形成させることによ
り、放電現象の防止を図ることを本発明者は検討し、導
電性物質およびこれに対する親和性が互いに異なる２種
以上のゴムの混合物からなる導電性シール材を先に提案
した（特願昭６０−２７９７７ ）。Causes a qi discharge phenomenon. Therefore, the present inventor has considered preventing the discharge phenomenon by imparting conductivity to static electricity itself and forming an electric circuit there. A conductive sealing material made of a mixture of rubbers was previously proposed (Japanese Patent Application No. 60-27977).
しかるに、そこに提案された導電性シール材がオイルシ
ール用ゴム材料などとして寒冷地で使用される場合、ゴ
ムの低温脆化や結晶化の問題があり、そのままの状態で
使用したのでは、放電現象の防止以前にシール材として
の性能が損なわれ、油漏れなどの自体を生ずる可能性が
考えられる。However, when the conductive sealing material proposed there is used as a rubber material for oil seals in cold regions, there are problems with low-temperature embrittlement and crystallization of the rubber, and if it is used as is, it will cause electrical discharge. It is conceivable that the performance as a sealing material will be impaired before the phenomenon can be prevented, leading to problems such as oil leakage.
例えば、非品性のＮＢＲ製シール材では、温度を常温よ
り下げると、それに伴って硬度は増加し、ゴム材料は脆
くなり、始動時などにシール材のリップに大きな力が加
わると破損したりする。また、温度の低下に伴ってモジ
ュラス値も増加するようになり、そうすると回転軸に取
り付けられているシール部片が回転軸によって拡げられ
るようにする力とシール材を押さえるための力とがつり
合っていたものが、前者の力の方が後者より大きくなり
、その結果としてシール機能が損なわれるようになる。For example, when the temperature of a non-quality NBR seal material is lowered below room temperature, the hardness increases and the rubber material becomes brittle, and may break if a large force is applied to the lip of the seal material, such as during startup. do. In addition, as the temperature decreases, the modulus value also increases, and the force that causes the seal piece attached to the rotating shaft to expand due to the rotating shaft is balanced by the force that suppresses the sealing material. However, the force of the former becomes greater than the force of the latter, and as a result, the sealing function is impaired.
ＮＢＲ製シール材では、これらのことが油漏れを起こす
原因となる。With NBR sealing material, these things cause oil leakage.
一方、結晶性のクロロプレンゴム製シール材では、温度
の低下と共に脆化だけではなく結晶化も起こり、体積や
締付力が減少し、これらが原因となって油漏れを生ずる
ようになる。On the other hand, in a sealing material made of crystalline chloroprene rubber, not only embrittlement but also crystallization occurs as the temperature decreases, resulting in a decrease in volume and tightening force, which causes oil leakage.
そこで、本発明者は、シール材に導電性物質を付与して
導電性をそこに付与した点を更に有効に利用し、そこに
通電、発熱せしめることによりかかる事態の解決を図っ
た結果、初期の目的を十分に達成することができた。な
お、この場合のゴムとしては、導電性物質に対する親和
性が互いに異なる２種のゴム混合物が好んで用いられる
が、それは１種類のゴムであってもよい。Therefore, the inventor of the present invention attempted to solve this situation by making more effective use of the fact that a conductive substance was added to the sealing material to give it conductivity, and by energizing it and generating heat. were able to fully achieve their objectives. In this case, as the rubber, a mixture of two types of rubbers having mutually different affinities for the conductive substance is preferably used, but it may be one type of rubber.
〔問題点を解決するための手段〕および〔作用〕従って
、本発明は発熱性シール材に係り、この発熱性シール材
は、導電性物質を混和したゴムよりなる導電性シール材
成形品を電源に接続してなる。[Means for Solving the Problem] and [Operation] Accordingly, the present invention relates to a heat-generating sealing material, and the heat-generating sealing material is a molded product of a conductive sealing material made of rubber mixed with a conductive substance. It becomes connected to.
ゴム材料としては、ブタジェンゴム、スチレンブタジェ
ンゴム、クロロプレンゴム、ニトリルゴム、エチレンプ
ロピレンゴム、ブチルゴム、アクリルゴム、ヒドリンゴ
ム、フッ素ゴムなどの合成ゴムまたは天然ゴムが用いら
れる。これらのゴムは、単独で用いられるだけではなく
、先の提案と同様に、導電性物質に対する親和性が互い
に異なる２種以上のゴム混合物としても用いることがで
き、この場合は１種類のゴムを用いたときよりも所要電
圧が低くて済む。As the rubber material, synthetic rubber or natural rubber such as butadiene rubber, styrene butadiene rubber, chloroprene rubber, nitrile rubber, ethylene propylene rubber, butyl rubber, acrylic rubber, hydrin rubber, fluororubber, etc. is used. These rubbers can be used not only alone, but also as a mixture of two or more rubbers with different affinities for conductive substances, as in the previous proposal.In this case, one type of rubber can be used as a mixture. The required voltage is lower than when using
導電性物質に対してより親和性のある方のゴムとしでは
、その分子中に二重結合のような不飽和結合を比較的多
い含有量で含有しているゴム、例えばブタジェンゴム、
スチレンブタジェンゴム、クロロプレンゴム、ニトリル
ゴムなどの合成ゴムまたは天然ゴムが用いられ、これら
のゴムは導電性物質の混線により、そこに導電性が付与
されるようになる。一方、導電性物質に対して親和性に
乏しい方のゴムとしては、ゴム分子中に不飽和結合を殆
んど含有していないゴム、例えばエチレンプロピレンゴ
ム、ブチルゴム、アクリルゴム、ヒドリンゴムなどが用
いられる。Rubbers that have a higher affinity for conductive substances include rubbers that contain a relatively large amount of unsaturated bonds such as double bonds in their molecules, such as butadiene rubber,
Synthetic rubbers or natural rubbers such as styrene-butadiene rubber, chloroprene rubber, and nitrile rubber are used, and conductivity is imparted to these rubbers by mixing conductive substances therein. On the other hand, rubbers that have a poor affinity for conductive substances include rubbers that contain almost no unsaturated bonds in their rubber molecules, such as ethylene propylene rubber, butyl rubber, acrylic rubber, and hydrin rubber. .
これら２種類のゴムの組合せとしては、例えばブタジェ
ンゴム／エチレンプロピレンゴムクロロプレンゴム／ア
クリルゴム
ニトリルゴム／アクリルゴム
ニトリルゴム／エチレンプロピレンゴムの如き組合せで
用いられる。ただし、これをオイルシールなどのシール
材として用いる場合には、耐油性の点で劣るブタジェン
ゴムを用いることは好ましいことではない。Examples of the combination of these two types of rubber include butadiene rubber/ethylene propylene rubber chloroprene rubber/acrylic rubber nitrile rubber/acrylic rubber nitrile rubber/ethylene propylene rubber. However, when using this as a sealing material such as an oil seal, it is not preferable to use butadiene rubber, which has poor oil resistance.
これら２種類のゴムのブレンドは、シール材の高導電化
を達成させるために、導電性が付与される方のゴムの割
合が体積分率で役０．３５〜０．８０の範囲内にあるこ
とが好ましい。この理由は、導電性が付与される方のゴ
ムが連続した相を形成する必要があるからであり、ただ
しカーボンブラックなどの導電性物質の配合割合が多く
なるに従ってゴムの硬度（弾性率）が大きくなるので、
そのブレンド比についても上限値が設定される。因みに
、後記各実施例３〜４の場合についてその体積分率を透
過電子顕微鏡で測定すると、いずれも０，５５〜０．７
０の範囲内にあった。In the blend of these two types of rubber, in order to achieve high conductivity of the sealing material, the proportion of the rubber imparting conductivity is within the range of 0.35 to 0.80 in terms of volume fraction. It is preferable. The reason for this is that the rubber to which conductivity is imparted needs to form a continuous phase; however, as the proportion of conductive substances such as carbon black increases, the hardness (modulus of elasticity) of the rubber decreases. Because it gets bigger,
An upper limit value is also set for the blend ratio. Incidentally, when the volume fractions of Examples 3 to 4 described later are measured using a transmission electron microscope, they are all 0.55 to 0.7.
It was within the range of 0.
導電性物質としては、特にケッチエンブラック、アセチ
レンブランク、ＥＣＦカーボンブラックによって代表さ
れるカーボンブラック、グラファイト、カーボン繊維、
金属メツキした合成繊維、金属メツキしたガラス繊維、
更にはニッケル粉、銅粉、金粉、アルミニウム粉などの
金属粉、アルミニウム繊維、黄銅繊維、ニッケル繊維な
どの金属繊維などが挙げられ、好ましくはカーボンブラ
ンクが用いられる。Examples of conductive substances include carbon black represented by Ketschen black, acetylene blank, and ECF carbon black, graphite, carbon fiber,
Metal-plated synthetic fiber, metal-plated glass fiber,
Further examples include metal powders such as nickel powder, copper powder, gold powder, and aluminum powder, metal fibers such as aluminum fibers, brass fibers, and nickel fibers, and carbon blanks are preferably used.
これらの導電性物質およびこれに対する親和性が互いに
異なる２種以上のゴムの混合は、例えば次の２通りのい
ずれかの方法によって行なうことができる。Mixing of these conductive substances and two or more rubbers having mutually different affinities for the conductive substances can be carried out, for example, by one of the following two methods.
（１）導電性物質とこれに対してより親和性のある方の
ゴムとを混練し、導電性物質をある程度分散させた後、
より親和性の劣る方のゴムをこれに加え、混練する方法
（２） ｌ相性の異なる２種以上のゴムを素練りした後
、導電性物質をこれに加え、混練する方法このような混
練方法により調製された混合物は、導電性物質の分散密
度の相対的に高いゴム部分と分散密度の相対的に低いゴ
ム部分とからなり、前者は導通の良好な部分を形成し、
また後者はゴムの柔軟性を有する部分を形成して、一つ
の混合物にこれらの性質を兼備させる。(1) After kneading a conductive substance and a rubber that has a higher affinity for the conductive substance and dispersing the conductive substance to a certain extent,
A method of adding a rubber with lower affinity and kneading (2) A method of masticating two or more rubbers with different compatibility, then adding a conductive substance thereto and kneading This kneading method The mixture prepared by consists of a rubber part with a relatively high dispersion density of the conductive substance and a rubber part with a relatively low dispersion density of the conductive substance, the former forming a part with good conductivity,
The latter also forms the flexible part of the rubber, allowing one mixture to combine these properties.
かかる観点から、導電性物質はその種類によっても異な
るが、それがカーボンブラックの場合、ゴム１００重量
ブラック当り約５〜１００重量部、好ましくは約１０〜
６０重量部の割合で用いられ、このような割合の配合に
よって良好な発熱性が得られる。導電性物質と共に、ゴ
ムの配合剤として通常用いられている各種の加硫剤、加
硫促進剤、補強剤、充填剤、可塑剤、安定剤などを必要
に応じて配合することができる。これらは、ブレンドゴ
ム１００重量部当り、例えば加硫剤や加硫促進剤では約
０．５〜５重量部、また充填剤の場合には約５〜１００
重量部の割合で用いられる。From this point of view, the conductive substance varies depending on its type, but when it is carbon black, it is about 5 to 100 parts by weight, preferably about 10 to 100 parts by weight, per 100 parts by weight of rubber.
It is used in a proportion of 60 parts by weight, and good heat generation properties can be obtained by blending in such a proportion. Along with the conductive substance, various vulcanizing agents, vulcanization accelerators, reinforcing agents, fillers, plasticizers, stabilizers, etc. that are commonly used as compounding agents for rubber may be blended as necessary. These amounts are, for example, about 0.5 to 5 parts by weight for vulcanizing agents and vulcanization accelerators, and about 5 to 100 parts by weight for fillers, per 100 parts by weight of blended rubber.
Used in parts by weight.
このような導電性物質を混和したゴムよりなる導電性シ
ール材成形品に発熱機能を付与するには、導電性シール
材成形品全体を導電性物質混和ゴムで成形するかあるい
は非導電性シール材成形品表面に導電性物質混和ゴムの
被覆層などを設けた後、そこに直流または交流の電源を
接続させることが行われる。In order to impart a heat generating function to a conductive sealing material molded product made of rubber mixed with a conductive substance, it is necessary to mold the entire conductive sealing material molded product with a conductive material-mixed rubber or to use a non-conductive sealing material. After a coating layer of rubber mixed with a conductive substance is provided on the surface of the molded product, a direct current or alternating current power source is connected thereto.
電源の接続方式としては、導電性シール材成形品を成形
する際、例えば成形品表面の内側となる部分に金属製ピ
ン、金属片などを互いに絶縁される位置関係に２ケ所埋
め込んで加硫し、そこからそれぞれリード線を引き出し
て電源に接続するようにする。As for the power supply connection method, when molding a conductive sealing material molded product, for example, metal pins, metal pieces, etc. are embedded in two locations that are insulated from each other on the inner surface of the molded product, and then vulcanized. , pull out each lead wire from there and connect it to the power supply.
〔作用〕および〔発明の効果〕
本発明に係る発熱性シール材は、例えばオイルシール用
ゴム材料として用いることができる。[Function] and [Effects of the Invention] The exothermic sealing material according to the present invention can be used, for example, as a rubber material for oil seals.
自動車などの車輪の回転駆動手段は、図面の第１図に例
示されるように、ハウジング１と回転軸２との間に装着
されたころがり軸受３の働きによ゛るが、このころがり
軸受の潤滑剤のシール手段として、回転軸周面と主リッ
プ部４およびダストリップ部５で弾性的に接触して摺動
するゴム状弾性材料によるシール部片６を備えたオイル
シール７が使用されている。As illustrated in FIG. 1 of the drawings, the rotational drive means for wheels of automobiles, etc. relies on the function of a rolling bearing 3 installed between a housing 1 and a rotating shaft 2. As the lubricant sealing means, an oil seal 7 is used which includes a sealing piece 6 made of a rubber-like elastic material that slides in elastic contact with the circumferential surface of the rotating shaft, the main lip portion 4, and the dust lip portion 5. There is.
このような構造を有するオイルシールを寒冷地などで使
用した場合、温度の低下によりゴム部分に脆化や結晶化
が起り始めると、ゴム材料のモジュラスの増加によりス
プリングの締め付けが効かなくなったり、体積、締付力
が減少して主リップ部やダストリップ部の回転軸周面に
対する弾性的な接触が不完全となり、油漏れの原因とな
る。When an oil seal with this type of structure is used in a cold region, if the rubber part begins to become brittle or crystallized due to a drop in temperature, the elastic modulus of the rubber material increases and the spring tightening becomes ineffective, and the volume decreases. , the tightening force decreases and the elastic contact of the main lip portion and the dust lip portion with the circumferential surface of the rotating shaft becomes incomplete, causing oil leakage.
こうした一連の現象を防止するために、体積固有抵抗値
が１０’Ω・口のオーダー以下の導電性ゴム材料で形成
されたシール材成形品が用いられ、オイルシール導電性
を付与し、発熱機能を持たせるようにする。具体的には
、第１図に示された態様の場合には、ダストリップ部５
などの摺動部に接するリップ部にこのような機能を保持
せしめる。In order to prevent this series of phenomena, a sealing material molded product made of a conductive rubber material with a volume resistivity of the order of 10'Ω or less is used, which gives the oil seal conductivity and heat generation function. Try to have it. Specifically, in the case of the embodiment shown in FIG.
The lip portion that comes into contact with the sliding portion, such as, is made to maintain such a function.
その場合、オイルシールの金属缶部分との絶縁を確保す
るために、金属缶部分とそれに接ｒるゴム材料部分との
接合は、絶縁性の高い接着剤を用いて行われる必要があ
る。In that case, in order to ensure insulation between the oil seal and the metal can part, the metal can part and the rubber material part in contact with it must be joined using a highly insulating adhesive.
このようにして発熱機能を保持せしめることにより、周
囲温度が低下し、ゴム材料が脆化および結晶し始める温
度に到達したら通電を開始して発熱させ、脆化および結
晶化の温度に達ないようにして、シール機能の低下およ
び油漏れなどを防止する。By maintaining the heat generation function in this way, when the ambient temperature drops and the rubber material reaches a temperature at which it begins to become brittle and crystallized, electricity is turned on to generate heat, thereby preventing the rubber material from reaching the temperature at which it becomes brittle and crystallized. to prevent deterioration of sealing function and oil leakage.
本発明に係る発熱性シール材は、オイルシールばかりで
はなく、０−リング、パツキンなどの他のシール材用途
にも有効に通用することができる。The exothermic sealing material according to the present invention can be effectively used not only for oil seals but also for other sealing materials such as O-rings and packings.
また、その電源については、それの適用個所に応じて適
宜選択することができ、例えば自動車の直流電源、家庭
用洗濯機の場合の交流電源などが用いられる。Further, the power source can be appropriately selected depending on the place of application, and for example, a DC power source for an automobile, an AC power source for a household washing machine, etc. are used.
次に、実施例について本発明を説明する。 Next, the present invention will be explained with reference to examples.
実施例１〜２
ニトリルゴム（日本合成ゴム製品Ｎ ２３４Ｌ）を密封
式混練機に投入し、回転数３０ｒｐｏ＋で１分間素線り
した後、カーボンブラック （ケッチエンブランクＥＣ
）その他の配合剤を投入して１０分間混練し、排出させ
た。Examples 1 to 2 Nitrile rubber (Nippon Synthetic Rubber Products N 234L) was put into a sealed kneader and mixed into strands for 1 minute at a rotational speed of 30 rpo+, and carbon black (Ketchen Blank EC) was added to the kneader.
) Other ingredients were added, kneaded for 10 minutes, and then discharged.
排出させたゴムを開放式混練機で混練後、１８０℃で４
分間加硫して、外径３６ｍ、内径２５ｔｍ、厚さ２菖ｌ
のリング状物に成形し、この成形品を一３０℃の恒温槽
中で直流電源に接続し、電圧を印加したときの成形品の
温度変化を成形品に差し込んだ熱電対により計測しなが
ら、この成形品を一３０’Ｃがら０℃または常温（２０
℃）に温度上昇させるとき、３０秒後または１分後に目
的温度に到達するのに必要な電圧値を測定した。得られ
た結果は、後記表に示される。After kneading the discharged rubber in an open kneader, it was heated to 180°C for 4 hours.
Vulcanized for minutes, outer diameter 36 m, inner diameter 25 tm, thickness 2 liters
This molded product was placed in a constant temperature oven at -30°C and connected to a DC power supply, and the temperature change of the molded product when voltage was applied was measured using a thermocouple inserted into the molded product. This molded product is heated to -30°C to 0°C or at room temperature (20°C).
℃), the voltage value required to reach the target temperature after 30 seconds or 1 minute was measured. The results obtained are shown in the table below.
実施例３〜４
実施例１〜２において、配合剤投入後５分間混練してか
ら、そこにアクリルゴム（日本合成ゴム製品ＡＲ２０１
）を加え、更に５分間混練し、排出させた。Examples 3-4 In Examples 1-2, after adding the compounding agent and kneading for 5 minutes, acrylic rubber (Japan Synthetic Rubber Product AR201) was added.
) was added, kneaded for an additional 5 minutes, and discharged.
この排出ゴムからの成形品についても、実施例１〜２と
同様な測定が行われた。得られた結果は、次の表に併記
される。The same measurements as in Examples 1 and 2 were also performed on molded products made from this discharged rubber. The results obtained are also listed in the following table.
（以下、この頁余白）
実施例
〔配合成分：重量部〕
ニトリルゴム １００ １００ ７０ ７０ア
クリルゴム −−３０３０
カーボンブランク １５ ３０ １５ ３０亜
鉛華（特３号）５５５５
ステアリン酸 １ １ １ １イオウ
１．５ １．５ １．５ １．５テトラメチル
チウラム １．５ １．５ １．５ １．５モノスルフ
イド
２−メルカプトベンゾ ０．５ ０．５ ０．５ ０
．５チアゾール
〔測定電圧：ボルト〕
一り０℃→０℃／３０秒 ２７ １１ ２０
９−３０℃→０℃／６０秒 ２０ ８ １４
７−３０℃→２０℃／３０秒 ３５ １４
２５ １１−３０℃−２０℃／６０秒 ２５
１０ １８ ８以上の結果から、カーボンブラッ
クを３０重量部用いた実施例２および実施例４の場合に
は、自動車用のバッテリー（１２Ｖ ）を電源として使
用することが可能であり、これらの例以外の場合でも、
配合、形状を変えることにより、任意の電圧での使用を
可能とする。(Hereinafter, this page margin) Examples [Ingredients: parts by weight] Nitrile rubber 100 100 70 70 Acrylic rubber --3030 Carbon blank 15 30 15 30 Zinc white (Special No. 3) 5555 Stearic acid 1 1 1 1 Sulfur
1.5 1.5 1.5 1.5 Tetramethylthiuram 1.5 1.5 1.5 1.5 Monosulfide 2-mercaptobenzo 0.5 0.5 0.5 0
．． 5 Thiazole [Measurement voltage: Volts] 0°C → 0°C/30 seconds 27 11 20
9-30℃→0℃/60 seconds 20 8 14
7-30℃→20℃/30 seconds 35 14
25 11-30℃-20℃/60 seconds 25
10 18 8 From the above results, it is possible to use an automobile battery (12V) as a power source in the cases of Example 2 and Example 4 in which 30 parts by weight of carbon black was used, and other than these examples Even in the case of
By changing the composition and shape, it can be used at any voltage.
第１図は、オイルシールを用いた摺動装置の断面図であ
る。
（符号の説明）
１００．ハウジング
２０００回転軸
３３０．ころがり軸受
６０６．シール部片
７０１．オイルシールFIG. 1 is a sectional view of a sliding device using an oil seal. (Explanation of symbols) 100. Housing 2000 rotating shaft 330. Rolling bearing 606. Seal piece 701. Oil seal
Claims (1)
成形品に電源を接続してなる発熱性シール材。 ２、ゴムが導電性物質に対する親和性が互いに異なる２
種以上のゴム混合物である特許請求の範囲第１項記載の
発熱性シール材。 ３、導電性物質がカーボンブラックである特許請求の範
囲第１項または第２項記載の発熱性シール材。 ４、ゴム１００重量部当り５〜１００重量部の導電性物
質が用いられた特許請求の範囲第１項または第２項記載
の発熱性シール材。 ５、オイルシールとして用いられる特許請求の範囲第１
項または第２項記載の発熱性シール材。[Claims] 1. A heat-generating sealant formed by connecting a power source to a molded conductive sealant made of rubber mixed with a conductive substance. 2. Rubbers have different affinities for conductive substances 2.
The exothermic sealing material according to claim 1, which is a mixture of more than one type of rubber. 3. The exothermic sealing material according to claim 1 or 2, wherein the conductive substance is carbon black. 4. The exothermic sealing material according to claim 1 or 2, wherein the conductive material is used in an amount of 5 to 100 parts by weight per 100 parts by weight of rubber. 5. Claim 1 used as an oil seal
The exothermic sealing material according to item 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61186229A JPS6343067A (en) | 1986-08-07 | 1986-08-07 | Thermal sealing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61186229A JPS6343067A (en) | 1986-08-07 | 1986-08-07 | Thermal sealing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6343067A true JPS6343067A (en) | 1988-02-24 |
Family
ID=16184614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61186229A Pending JPS6343067A (en) | 1986-08-07 | 1986-08-07 | Thermal sealing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6343067A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6109794A (en) * | 1997-07-17 | 2000-08-29 | Skf Industrie S.P.A. | Rolling contact bearing provided with a seal and an electrostatic current discharge device |
| US6153514A (en) * | 1999-01-04 | 2000-11-28 | Advanced Micro Devices, Inc. | Self-aligned dual damascene arrangement for metal interconnection with low k dielectric constant materials and nitride middle etch stop layer |
| US6190051B1 (en) | 1998-02-24 | 2001-02-20 | Skf Industrie S.P.A. | Roller contact bearing with a sealing device and a device for rotation speed |
| US6323640B1 (en) | 1998-01-16 | 2001-11-27 | Skf Industrie S.P.A. | Rolling bearing unit with a rotating speed measuring device |
| US6491441B2 (en) | 1999-03-04 | 2002-12-10 | Skf Industrie S.P.A. | Tapered bearing unit |
| WO2017148586A1 (en) | 2016-03-03 | 2017-09-08 | Kaco Gmbh + Co. Kg | Shaft-grounding ring |
| CN111465788A (en) * | 2017-12-27 | 2020-07-28 | Nok株式会社 | Sealing device |
-
1986
- 1986-08-07 JP JP61186229A patent/JPS6343067A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6109794A (en) * | 1997-07-17 | 2000-08-29 | Skf Industrie S.P.A. | Rolling contact bearing provided with a seal and an electrostatic current discharge device |
| US6323640B1 (en) | 1998-01-16 | 2001-11-27 | Skf Industrie S.P.A. | Rolling bearing unit with a rotating speed measuring device |
| US6190051B1 (en) | 1998-02-24 | 2001-02-20 | Skf Industrie S.P.A. | Roller contact bearing with a sealing device and a device for rotation speed |
| US6153514A (en) * | 1999-01-04 | 2000-11-28 | Advanced Micro Devices, Inc. | Self-aligned dual damascene arrangement for metal interconnection with low k dielectric constant materials and nitride middle etch stop layer |
| US6491441B2 (en) | 1999-03-04 | 2002-12-10 | Skf Industrie S.P.A. | Tapered bearing unit |
| WO2017148586A1 (en) | 2016-03-03 | 2017-09-08 | Kaco Gmbh + Co. Kg | Shaft-grounding ring |
| CN111465788A (en) * | 2017-12-27 | 2020-07-28 | Nok株式会社 | Sealing device |
| US11365807B2 (en) | 2017-12-27 | 2022-06-21 | Nok Corporation | Sealing apparatus |
| CN111465788B (en) * | 2017-12-27 | 2022-09-20 | Nok株式会社 | Sealing device |
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