JPS62180907A - Electrical insulating oil - Google Patents
Electrical insulating oilInfo
- Publication number
- JPS62180907A JPS62180907A JP2139886A JP2139886A JPS62180907A JP S62180907 A JPS62180907 A JP S62180907A JP 2139886 A JP2139886 A JP 2139886A JP 2139886 A JP2139886 A JP 2139886A JP S62180907 A JPS62180907 A JP S62180907A
- Authority
- JP
- Japan
- Prior art keywords
- electrical insulating
- benzyltoluene
- insulating oil
- weight
- low
- 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
Links
- 239000010735 electrical insulating oil Substances 0.000 title claims description 40
- 239000000203 mixture Substances 0.000 claims description 22
- QWUWMCYKGHVNAV-UHFFFAOYSA-N 1,2-dihydrostilbene Chemical compound C=1C=CC=CC=1CCC1=CC=CC=C1 QWUWMCYKGHVNAV-UHFFFAOYSA-N 0.000 claims description 16
- SIYISNUJKMAQBV-UHFFFAOYSA-N 1-benzyl-4-methylbenzene Chemical compound C1=CC(C)=CC=C1CC1=CC=CC=C1 SIYISNUJKMAQBV-UHFFFAOYSA-N 0.000 claims description 9
- KSYQGOYOIKQFNA-UHFFFAOYSA-N 1-benzyl-3-methylbenzene Chemical compound CC1=CC=CC(CC=2C=CC=CC=2)=C1 KSYQGOYOIKQFNA-UHFFFAOYSA-N 0.000 claims description 5
- PQTAUFTUHHRKSS-UHFFFAOYSA-N 1-benzyl-2-methylbenzene Chemical compound CC1=CC=CC=C1CC1=CC=CC=C1 PQTAUFTUHHRKSS-UHFFFAOYSA-N 0.000 claims description 4
- 238000002425 crystallisation Methods 0.000 description 12
- 230000008025 crystallization Effects 0.000 description 12
- 239000003990 capacitor Substances 0.000 description 11
- PKQYSCBUFZOAPE-UHFFFAOYSA-N 1,2-dibenzyl-3-methylbenzene Chemical compound C=1C=CC=CC=1CC=1C(C)=CC=CC=1CC1=CC=CC=C1 PKQYSCBUFZOAPE-UHFFFAOYSA-N 0.000 description 10
- 239000013078 crystal Substances 0.000 description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- DMHZDOTYAVHSEH-UHFFFAOYSA-N 1-(chloromethyl)-4-methylbenzene Chemical compound CC1=CC=C(CCl)C=C1 DMHZDOTYAVHSEH-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 3
- 230000005496 eutectics Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- LZBOHNCMCCSTJX-UHFFFAOYSA-N 1-(chloromethyl)-3-methylbenzene Chemical compound CC1=CC=CC(CCl)=C1 LZBOHNCMCCSTJX-UHFFFAOYSA-N 0.000 description 2
- GTLWADFFABIGAE-UHFFFAOYSA-N 1-chloroethylbenzene Chemical compound CC(Cl)C1=CC=CC=C1 GTLWADFFABIGAE-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000006317 isomerization reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- GNPWYHFXSMINJQ-UHFFFAOYSA-N 1,2-dimethyl-3-(1-phenylethyl)benzene Chemical compound C=1C=CC(C)=C(C)C=1C(C)C1=CC=CC=C1 GNPWYHFXSMINJQ-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000005727 Friedel-Crafts reaction Methods 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 description 1
- 229940073608 benzyl chloride Drugs 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical compound C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- CMQCNTNASCDNGR-UHFFFAOYSA-N toluene;hydrate Chemical compound O.CC1=CC=CC=C1 CMQCNTNASCDNGR-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Organic Insulating Materials (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は電気絶縁油に関するものである。さらに詳しく
は、低粘度、低流動点、かつ低融点で低温特性の憬れた
電気絶縁油に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to electrical insulating oil. More specifically, it relates to an electrical insulating oil that has low viscosity, low pour point, low melting point, and poor low temperature properties.
［従来の技術］
近年、油含浸コンデンサーなどの油含浸型％機器の小型
化、軽量化の傾向は著しく、それに対応した絶縁体ある
いは誘電体としてプラスチック材料か使用されるように
なった。一方、含浸させる電気絶縁油についても、上述
のプラスチック材料の使用に伴ない、２環芳香族炭化水
素が使用されるようになってきた。さらにコンデンサー
については、その低温特性を向上、させるために、２環
芳香族炭化水素系絶縁油は、低粘度化、低分子量化の傾
向にある。[Prior Art] In recent years, oil-impregnated capacitors and other oil-impregnated devices have become significantly smaller and lighter in weight, and plastic materials have come to be used as insulators or dielectrics in response to this trend. On the other hand, with the use of the above-mentioned plastic materials, two-ring aromatic hydrocarbons have come to be used as the electrical insulating oil to be impregnated. Furthermore, in order to improve the low-temperature characteristics of capacitors, there is a tendency for two-ring aromatic hydrocarbon-based insulating oils to have lower viscosity and lower molecular weight.
このような電気絶縁油の７例として、ベンジルトルエン
が提案されてい、る。例えば、特公昭５５−５１１＋８
９号公報には、モノベンジルトルエンおよび／またはジ
ベンジルトルエンを含浸した平ンデンサーが開示されて
いる。これには、ベンジルトルエン（モノベンジル、ト
ルエン）としτ０−ヘンシルトルエンとｐ−ベンジルト
ルエンのみが示されている。しかし、０−ベンジルトル
エンの融点は６．６℃であり、ｐ−ベンジルトルエンの
融点は４．６°Ｃであり１両者の混合物でかつ最も融点
が低くなる共晶組成においても共晶率ｔ、＜ −１５°
Ｃである。上記特公昭５５−５６８９号には、ざらにジ
ベンジルトルエンも記載されているが、これ単独では低
温における粘度が高く好ましくない、また、ベンジルト
ルエンとジベンジルトルエンとの混合物においては。Benzyltoluene has been proposed as an example of such electrical insulating oil. For example, Tokuko Sho 55-511+8
No. 9 discloses a flat capacitor impregnated with monobenzyltoluene and/or dibenzyltoluene. This shows only benzyltoluene (monobenzyl, toluene), τ0-hensyltoluene and p-benzyltoluene. However, the melting point of 0-benzyltoluene is 6.6°C, and the melting point of p-benzyltoluene is 4.6°C.1 Even in the eutectic composition that is a mixture of both and has the lowest melting point, the eutectic rate t , < −15°
It is C. Although dibenzyltoluene is also roughly described in Japanese Patent Publication No. 55-5689, it is undesirable when used alone due to its high viscosity at low temperatures, and in the case of a mixture of benzyltoluene and dibenzyltoluene.
ジベンジルトルエンの量を多くスレハ、ペンシルトルニ
ンが析出する温度は低くなるが、粘度が高くナルノテ、
ジベンジルトルエンの配合量にハ限界があり、ベンジル
トルエンの晶析温度を低下させるにはやはり限度がある
。また、晶析温度を低下させる効果は、添加物質の重蛍
ではなくモル数テ定マるから、ジベンジルトルエンのよ
うな分子量が犬きく、かつ粘度が高いものは非常に不利
である。If the amount of dibenzyltoluene is increased, the temperature at which pencil tolune precipitates will be lower, but the viscosity will be higher and the temperature will be lower.
There is a limit to the amount of dibenzyltoluene blended, and there is also a limit to lowering the crystallization temperature of benzyltoluene. In addition, the effect of lowering the crystallization temperature is determined by the number of moles of the added substance, not by the weight of the additive, so a substance with a high molecular weight and high viscosity, such as dibenzyltoluene, is very disadvantageous.
特開昭８０−８７２３１号公報には、ベンジルトルエン
を含むポリアリールアルカンオリゴマー組成物が提案さ
れている。しかし、この文献に具体的に開示されている
ベンジルトルエンは、〇−異性体とｐ−異性体が主であ
るため、やはり過冷却の後には晶析し、−２２，５°Ｃ
において結晶の存在が認められる。JP-A-80-87231 proposes a polyarylalkane oligomer composition containing benzyltoluene. However, benzyltoluene specifically disclosed in this document mainly consists of the 〇-isomer and the p-isomer, so it crystallizes after supercooling and is heated to -22.5°C.
The presence of crystals is recognized in .
［発明が解決しようとする問題点］
本発明の目的は、従来提案されているベンジルトルエン
系電気絶縁油の上述のごとき欠点を改良することにある
。[Problems to be Solved by the Invention] An object of the present invention is to improve the above-mentioned drawbacks of conventionally proposed benzyltoluene-based electrical insulating oils.
すなわち、ジベンジルトルエンのごとき他の物質を添加
することなく、低粘度、低流動点、低融点の低温特性に
潰れたベンジルトルエン系電気、絶縁油を提供すること
である。That is, the object is to provide a benzyltoluene-based electrical and insulating oil that has low viscosity, low pour point, and low melting point low-temperature properties without adding other substances such as dibenzyltoluene.
［問題点を解決するための手段］
本発明は、ｍ−ベンジルトルエンか５０〜８５重量％、
ローベンジルトルエンとｐ−ベンジルトルエンの合計が
１５〜５０重ｆｆｉ％で、かつ０−ベンジルトルエンと
ｐ−ベンジルトルエンの比が０．２〜５．０であるベン
ジルトルエン組成物を含む電気絶縁油に関するものであ
る。[Means for solving the problems] The present invention provides m-benzyltoluene in an amount of 50 to 85% by weight,
Electrical insulating oil containing a benzyltoluene composition in which the total of low benzyltoluene and p-benzyltoluene is 15 to 50% by weight, and the ratio of 0-benzyltoluene to p-benzyltoluene is 0.2 to 5.0. It is related to.
以下に、ざらに具体的に説明する。A detailed explanation will be given below.
（１）組成割合
本発明はベンジルトルエンの３種の異性体を特定の割合
で含む組成物によって前記問題点を解決したものである
。(1) Composition Ratio The present invention solves the above-mentioned problems by using a composition containing three isomers of benzyltoluene in specific ratios.
ｍ−ベンジルトルエン自体の融点は−２７，８°Ｃであ
り、Ｃ一体の６．６°ｃ、 ｐ一体の４．６°Ｃ１およ
び〇一体とｐ一体の共晶点である一１５°Ｃのいずれよ
りも低い。しかし、ｆｆ１一体単独でなく、〇一体、ｐ
一体との混合物にすることによって、晶析温度がさらに
低下することを見出した。ｌ１１一体が５０〜８５重量
％の範囲において、最も低い晶析温度が達成される。The melting point of m-benzyltoluene itself is -27.8°C, 6.6°C for C, 4.6°C for p, and -15° which is the eutectic point for 〇 and p. lower than either C. However, not just ff1, but p
It has been found that the crystallization temperature can be further lowered by forming a mixture with a single component. The lowest crystallization temperature is achieved in the range of 50 to 85% by weight of 111.
残部は〇一体とＰ一体との混合物であるが、〇一体とｐ
一体の比（ｏ／ｐ）が０．２〜５．０の範囲内にあると
きに晶析温度が最低になる。ｏ／ｐ比は好ましくは０．
５−Ｓ ２．０である。The remainder is a mixture of 〇integrated and P integrated, but 〇integrated and p
The crystallization temperature is lowest when the integral ratio (o/p) is within the range of 0.2 to 5.0. The o/p ratio is preferably 0.
5-S 2.0.
また、ｍ一体の粘度は、他の〇一体、ｐ一体よりも低い
。すなわち、４０℃において、〇一体３．０５ｃＳｔｐ
一体２．４６ｃＳｔ、およびｍ一体２．２５ｃＳｔであ
る。Furthermore, the viscosity of m-integrated is lower than the other 〇-integrated and p-integrated. That is, at 40°C, 3.05 cStp
The total weight is 2.46 cSt, and the total weight is 2.25 cSt.
従って、ｍ一体を主成分とする本発明の絶縁油は、〇一
体およびｐ一体を用いる従来品よりも低粘度である。Therefore, the insulating oil of the present invention containing m-integral as a main component has a lower viscosity than conventional products using 〇-integrated and p-integrated.
（２）組成物の調製法
０−１ｍ−１ｐ−ベンジルトルエンをそれぞれ！Ｍ潰し
、所定の組成割合に混合する。各成分の製造例は、０−
メチルベンジルクロライド、ｍ−メチルベンジルクロラ
イド、ｐ−メチルベンジルクロライドをそれぞれベンゼ
ンとＦ ｅ Ｃｌ ３等のフリーゾルタラフッ型触媒の
存在下で反応させる方法が代表的である。(2) Preparation method of composition 0-1m-1p-benzyltoluene, respectively! Mash and mix to a predetermined composition ratio. Production examples of each component are 0-
A typical method is to react methylbenzyl chloride, m-methylbenzyl chloride, and p-methylbenzyl chloride with benzene in the presence of a free sol fluorine catalyst such as FeCl3.
更にベンジルクロライドとトルエンとをＡＩＣ：＋３等
のフリーデルクラフッ型触媒の存在下で反応させる方法
、ジフェニルメタンとトルエンとをＡＩＣ：＋３、シリ
カアルミナ、ゼオライト等の存在下で不均化および異性
化を行なわせる方法、フェニルトリルメタンをＡｌＣｌ
３．シリカアルミナ、ゼオライト等の存在下で異性化す
る方法等によってｏ−、ｍ−、ｐ−の各異性体の混合物
として得る方法等がある。Furthermore, there is a method of reacting benzyl chloride and toluene in the presence of a Friedel-Craft type catalyst such as AIC: +3, and a method of disproportionation and isomerization of diphenylmethane and toluene in the presence of AIC: +3, silica alumina, zeolite, etc. A method for converting phenyltolylmethane into AlCl
3. There is a method of obtaining a mixture of o-, m-, and p-isomers by isomerization in the presence of silica alumina, zeolite, etc., and the like.
生成物が異性体混合物である場合には、所望の組成割合
になるように、成分を適宜減少させたり、追加したりす
ることもできる。When the product is a mixture of isomers, components can be reduced or added as appropriate to obtain a desired composition ratio.
（３）任意成分
本発明の電気絶縁油は、そのまま使用する他に、公知の
他の電気絶縁油を混合して、使用することができる。他
の絶縁油に本発明の電気絶縁油を混合するときは１本発
明品の低粘度および低晶析温度により他の電気絶縁油の
低温特性を著しく改良することができる。特に好ましい
他の電気絶縁油は、フェニルキシリルエタン、インプロ
ピルビフェニルのような晶析温度の低い２環芳香族炭化
水素糸の電気絶縁油である。(3) Optional Components The electrical insulating oil of the present invention may be used as it is or may be mixed with other known electrical insulating oils. When the electrical insulating oil of the present invention is mixed with other insulating oils, the low-temperature properties of the other electrical insulating oil can be significantly improved due to the low viscosity and low crystallization temperature of the product of the present invention. Other particularly preferred electrical insulating oils are two-ring aromatic hydrocarbon thread electrical insulating oils with low crystallization temperatures, such as phenylxylylethane and inpropylbiphenyl.
さらに、酸化防止剤、リン酸エステル等の難燃剤、電気
絶縁油中に塩素化合物が含まれる場合にその悪影響を阻
止するためのニポキシ化合物等の電気絶縁油用添加剤と
して公知の各種添加剤を任意に添加することができる。Furthermore, various additives known as additives for electrical insulating oils, such as antioxidants, flame retardants such as phosphate esters, and nipoxy compounds to prevent the adverse effects of chlorine compounds in electrical insulating oils, are added. Can be added arbitrarily.
（４）用途
本発明の電気絶縁油は、電カケープル、変圧器、コンデ
ンサー等、各種電気機器に使用することができる。(4) Applications The electrical insulating oil of the present invention can be used in various electrical equipment such as power cables, transformers, and capacitors.
特に、誘電体としてポリプロピレンに代表されるポリオ
レフィン等のプラスチックフィルムを用いた油浸コンデ
ンサーに適している。このコンデンサーの電極は、アル
ミニウムなどを金属箔の形態または金属化プラスチック
フィルムの形態で使用したものである。また、プラスチ
ックフィルムはその表面が粗面化されたものでもよい、
さらにプラスチックフィルムと共に紙を併用することも
できる。It is particularly suitable for oil-immersed capacitors using a plastic film made of polyolefin, typified by polypropylene, as a dielectric. The electrodes of this capacitor are made of aluminum or the like in the form of metal foil or metallized plastic film. Additionally, the plastic film may have a roughened surface.
Furthermore, paper can also be used in combination with the plastic film.
［実施例］
〔電気絶縁油の製造〕
（１）ｐ−ベンジルトルエンの製造
ｐ−メチルベンジルクロライド５００ｇとベンゼン３０
００ｇを３０ ｇ ｃ７） Ｆ ｅ ＣＩ ３を触媒と
して用いて２０″Ｃで反応させ、反応終了後、触媒を失
活させ、中和、水洗した後、蒸留によってＰ−ベンジル
トルエンを回収した。[Example] [Production of electrical insulating oil] (1) Production of p-benzyltoluene 500 g of p-methylbenzyl chloride and 30 g of benzene
00g was reacted at 20''C using FeCI3 as a catalyst. After the reaction was completed, the catalyst was deactivated, neutralized, washed with water, and P-benzyltoluene was recovered by distillation.
（２） ｍ−ベンジルトルエンの製造
ｐ−メチルベンジルクロライドの代りにｍ−メチルベン
ジルクロライドを用いた他は、上記（１）と同様に行な
った。(2) Production of m-benzyltoluene The same procedure as in (1) above was carried out except that m-methylbenzyl chloride was used instead of p-methylbenzyl chloride.
（３）ｏ−ベンジルトルエンの製造
ｐ−メチルベンジルクロライドの代りに。−メチルベン
ジルクロライドを用いた他は、上記（りと同様に行なっ
た。(3) Production of o-benzyltoluene instead of p-methylbenzyl chloride. -The same procedure as above was carried out except that methylbenzyl chloride was used.
（１）電気絶縁油１〜６の調製
上記製造工程（１）から（３）の生成物を混合して次の
表−１に示す組成の電気絶縁油１〜６を得た。(1) Preparation of electrical insulating oils 1 to 6 The products of the above manufacturing steps (1) to (3) were mixed to obtain electrical insulating oils 1 to 6 having the compositions shown in Table 1 below.
表−１中、電気絶縁油１〜３が実施例であり、電気絶縁
油４〜６が比較例である。また、表−１中の組成割合は
重量％である。In Table 1, electrical insulating oils 1 to 3 are examples, and electrical insulating oils 4 to 6 are comparative examples. Moreover, the composition ratios in Table 1 are weight %.
表−１
（２）電気絶縁油７〜９（何れも比較例）電気絶縁油７
：
下記組成のベンジルトルエンとジベンジルトルエンを含
む電気絶縁油（市収品）
０−ベンジルトルエン ３２ｆ＜ｆｆｉ％ｍ−
ベンジルトルエン ５重量％ｐ−ベンジルト
ルエン ３７ｆｆｉｆｆｉ％〇一体／ｐ一体比
０．９ジベンジルトルエン
電気絶縁油８：
電気絶縁油７から回収したベンジルトルエン留分。組成
は、ａ一体：４４重量％、−一体：７重量％、ｐ一体：
４９重量％、〇一体／ｐ一体比二０．９電気絶縁油９：
３０重量％の電気絶縁油８と７０重量％のジベンジルト
ルエンとの混合物。Table-1 (2) Electrical insulating oil 7 to 9 (all comparative examples) Electrical insulating oil 7
: Electrical insulating oil containing benzyltoluene and dibenzyltoluene with the following composition (city property) 0-benzyltoluene 32f<ffi%m-
Benzyltoluene 5% by weight p-benzyltoluene 37ffiffi%〇integral/pintegral ratio 0.9 Dibenzyltoluene Electrical Insulating Oil 8: Benzyltoluene fraction recovered from Electrical Insulating Oil 7. The composition is: a-integrated: 44% by weight, --integrated: 7% by weight, p-integrated:
49% by weight, 0 integral/p integral ratio 2 0.9 Electrical Insulating Oil 9: A mixture of 30% by weight Electrical Insulating Oil 8 and 70% by weight dibenzyltoluene.
過冷却状態における晶析をみるために行なった。 This was done to observe crystallization under supercooled conditions.
電気絶縁油を一３５°Ｃに３時間保ち、次いで３時間か
けて一５０℃まで冷却し、−５０℃に３時間保ち、次い
で３時間かけて一３５°Ｃまで昇温し、以後このサイク
ルを繰返して、結晶が析出する状態を観察した。The electrical insulating oil was kept at -35°C for 3 hours, then cooled down to -50°C over 3 hours, kept at -50°C for 3 hours, then raised to -35°C over 3 hours, and continued in this cycle. The process was repeated to observe the state in which crystals precipitated.
試験に供した電気絶縁油は１〜３および６〜８である。The electrical insulating oils tested were 1-3 and 6-8.
電気絶縁油１〜３（実施例）は２０日経過後も結晶の析
出は認められなかった。No crystal precipitation was observed in electrical insulating oils 1 to 3 (examples) even after 20 days.
電気絶縁油６は７時間後（−５０°Ｃ）に全体が結晶化
した。電気絶縁油７は８日後（−４７，５°Ｃ）に初め
て結晶が発生し、その後徐々に結晶が生長し、１４日後
に全体の約３分の１を沈澱した結晶が占めるようになっ
た。Electrical insulating oil 6 was completely crystallized after 7 hours (-50°C). In electrical insulating oil 7, crystals first appeared after 8 days (-47.5°C), and then crystals gradually grew, and after 14 days, precipitated crystals accounted for about one-third of the total. .
電気絶縁油８は９時間後（−５０°Ｃ）に全体か結晶化
した。Electrical insulation oil 8 completely crystallized after 9 hours (-50°C).
晶析温度を正確にかつ短期間に測定するために次の測定
を行なった。In order to measure the crystallization temperature accurately and in a short period of time, the following measurements were performed.
先ず、電気絶縁油５０ｇを栓付試験管にとり、窒素ガス
を３０分間吹込んで、飽和溶解しているＨ２Ｏを除き、
低温槽であらかじめ一２０℃に冷却し、これに約５〜１
０ｍｇの０−ベンジルトルエンの結晶を種として入れた
０次いで、低温槽の温度を２．５°Ｃ／３０分の割合で
低下させ、２．５℃低下する毎に、その温度に１時間保
ち、晶析温度を測定した。First, 50 g of electrical insulating oil was placed in a test tube with a stopper, and nitrogen gas was blown into it for 30 minutes to remove the saturated dissolved H2O.
Pre-cooled to -20℃ in a low temperature bath, and then
The temperature of the cryostat containing 0 mg of 0-benzyltoluene crystals as a seed was then lowered at a rate of 2.5 °C/30 minutes, and for every 2.5 °C decrease, the temperature was maintained for 1 hour. , the crystallization temperature was measured.
全ての電気絶縁油が晶析した後、２．５°Ｃ／３０分の
割合で昇温し、２．５°Ｃ昇温する毎に、その温度に１
時間保ち、結晶が全て融ける温度を測定した。結果を表
−２に示す。After all of the electrical insulating oil has crystallized, the temperature is increased at a rate of 2.5°C/30 minutes, and for every 2.5°C increase, 1
The temperature was maintained for a certain period of time and the temperature at which all the crystals melted was measured. The results are shown in Table-2.
表−２
〔コンデンサーの破壊試験〕
厚さ１４絡のポリプロピレンフィルム２枚を誘電体とし
、アルミニウム箔を電極として、巻回して容量約０．４
ｐＦのコンデンサー素子を得た。これにより電気絶縁油
を常法により含浸し、−４０℃に冷却した後、０−ベン
ジルトルエンの結晶を約５〜１０１ｍｇ添加し、次いで
６０Ｖ／ルの電位傾度で課電し、５００時間後における
コンデンサーの破壊数を測定した。試験したコンデンサ
ー数は、各電気絶縁油について１２個ずつであった。結
果を表−３に示す。Table 2 [Destructive test of capacitor] Two polypropylene films with a thickness of 14 circuits were used as dielectrics, and aluminum foil was used as an electrode, and the capacitance was approximately 0.4 by winding them.
A pF capacitor element was obtained. This was impregnated with electrical insulating oil by a conventional method, and after cooling to -40°C, about 5 to 101 mg of 0-benzyltoluene crystals were added, and then electricity was applied with a potential gradient of 60 V/L, and after 500 hours, The number of broken capacitors was measured. The number of capacitors tested was 12 for each electrical insulating oil. The results are shown in Table-3.
表−３
電気絶縁油４〜８については破壊したものはいずれも結
晶が生成していた。Table 3 Crystals were formed in all of the electrical insulating oils 4 to 8 that were destroyed.
［発明の効果］
本発明の絶縁油は、ベンジルトルエンの３種類の異性体
の組成割合を特定の範囲に限定することによって、低温
特性に優れているという効果がある。[Effects of the Invention] The insulating oil of the present invention has an effect of excellent low-temperature properties by limiting the composition ratio of the three types of isomers of benzyltoluene to a specific range.
コンデンサーのごとき油含浸電気機器に使用するときは
、低温で破壊せず長期間の使用を特徴とするWhen used in oil-impregnated electrical equipment such as capacitors, it is characterized by long-term use without being destroyed at low temperatures.
Claims (1)
ベンジルトルエンとｐ−ベンジルトルエンの合計が１５
〜５０重量％で、かつｏ−ベンジルトルエンとｐ−ベン
ジルトルエンの比が０．２〜５．０であるベンジルトル
エン組成物を含む電気絶縁油。(1) 50-85% by weight of m-benzyltoluene, o-
The total of benzyltoluene and p-benzyltoluene is 15
An electrical insulating oil comprising a benzyltoluene composition of ~50% by weight and a ratio of o-benzyltoluene to p-benzyltoluene of 0.2 to 5.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2139886A JPH0654605B2 (en) | 1986-02-03 | 1986-02-03 | Electrical insulating oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2139886A JPH0654605B2 (en) | 1986-02-03 | 1986-02-03 | Electrical insulating oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62180907A true JPS62180907A (en) | 1987-08-08 |
| JPH0654605B2 JPH0654605B2 (en) | 1994-07-20 |
Family
ID=12053945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2139886A Expired - Fee Related JPH0654605B2 (en) | 1986-02-03 | 1986-02-03 | Electrical insulating oil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0654605B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013137055A1 (en) | 2012-03-13 | 2013-09-19 | Ｊｘ日鉱日石エネルギー株式会社 | Capacitor oil exhibiting excellent performance in wide temperature range |
| WO2015037543A1 (en) * | 2013-09-12 | 2015-03-19 | Ｊｘ日鉱日石エネルギー株式会社 | Electrically insulating oil composition, and oil-impregnated electrical equipment |
| JP2018026362A (en) * | 2017-11-06 | 2018-02-15 | Ｊｘｔｇエネルギー株式会社 | Electrical insulation oil composition and oil-impregnated electrical equipment |
-
1986
- 1986-02-03 JP JP2139886A patent/JPH0654605B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013137055A1 (en) | 2012-03-13 | 2013-09-19 | Ｊｘ日鉱日石エネルギー株式会社 | Capacitor oil exhibiting excellent performance in wide temperature range |
| US9754699B2 (en) | 2012-03-13 | 2017-09-05 | Jx Nippon Oil & Energy Corporation | Capacitor oil having excellent properties in wide temperature range |
| WO2015037543A1 (en) * | 2013-09-12 | 2015-03-19 | Ｊｘ日鉱日石エネルギー株式会社 | Electrically insulating oil composition, and oil-impregnated electrical equipment |
| JP2015056316A (en) * | 2013-09-12 | 2015-03-23 | Ｊｘ日鉱日石エネルギー株式会社 | Electrical insulation oil composition and oil-containing impregnation electrical equipment |
| CN105531772A (en) * | 2013-09-12 | 2016-04-27 | 吉坤日矿日石能源株式会社 | Electrically insulating oil composition, and oil-impregnated electrical equipment |
| US10373758B2 (en) | 2013-09-12 | 2019-08-06 | Jxtg Nippon Oil & Energy Corporation | Electrically insulating oil composition, and oil-impregnated electrical equipment |
| JP2018026362A (en) * | 2017-11-06 | 2018-02-15 | Ｊｘｔｇエネルギー株式会社 | Electrical insulation oil composition and oil-impregnated electrical equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0654605B2 (en) | 1994-07-20 |
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