JP2008251715A - Polymer arrester and its manufacturing method - Google Patents

Polymer arrester and its manufacturing method Download PDF

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JP2008251715A
JP2008251715A JP2007089330A JP2007089330A JP2008251715A JP 2008251715 A JP2008251715 A JP 2008251715A JP 2007089330 A JP2007089330 A JP 2007089330A JP 2007089330 A JP2007089330 A JP 2007089330A JP 2008251715 A JP2008251715 A JP 2008251715A
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lightning arrester
polymer
electrode
silicone rubber
dlc
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JP5025303B2 (en
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Yoshihiko Hirano
嘉彦 平野
Sumimasa Sato
純正 佐藤
Hideyasu Ando
秀泰 安藤
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Toshiba Corp
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Toshiba Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a polymer arrester having superior reliability on a quality, by realizing improvement in the reliability on a product and prolonging of a lifetime by further enhancing an adhesive property between a skin and an internal part, and preventing a moisture infiltration to the internal part, while providing a method that stably manufactures such a polymer arrester, at a low cost. <P>SOLUTION: A DLC layer 1 manufactured by a diamond-like carbon treatment is fitted on an FRP member 3, an arrester element 4 and the surface of an electrode 5. A skin 2 is constituted of an added-type liquefied silicone rubber, more specifically, a thermosetting type silicone rubber having a thermosetting temperature of 100°C or higher. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、ポリマー避雷器に係るものであって、特に、外部からの水分の侵入を防いで長期信頼性を向上させたポリマー避雷器とその製造方法に関するものである。   The present invention relates to a polymer lightning arrester, and more particularly to a polymer lightning arrester that prevents intrusion of moisture from the outside and improves long-term reliability, and a method for manufacturing the same.

電力用の避雷器は通常、外側に笠型の突起を有するがいし状の管（以下、碍管）に、避雷器素子を詰めた構造をしている。この碍管は従来、磁器製だったので耐衝撃性が弱いといった不具合があり、これを補うために肉厚化、大型化して重量が大きくなっていた。そこで近年では、磁器であった部分に高分子（ポリマー）を使用したポリマー避雷器が、急速に普及している。ポリマー避雷器は、軽量で耐衝撃性に優れており、事故時の安全性が高いといったメリットがある（例えば、特許文献１参照）。   A lightning arrester for electric power usually has a structure in which a lightning arrester element is packed in an insulator tube (hereinafter referred to as a soot tube) having a cap-shaped projection on the outside. Conventionally, this soot tube has been made of porcelain, so it has a problem that its impact resistance is weak, and in order to compensate for this, it has been increased in thickness and size to increase its weight. Therefore, in recent years, a polymer lightning arrester using a polymer (polymer) in a portion that has been a porcelain has rapidly spread. Polymer lightning arresters have the advantages of being lightweight and excellent in impact resistance, and having high safety during an accident (see, for example, Patent Document 1).

ここで図２を用いて、ポリマー避雷器の従来例について詳しく説明する。ポリマー避雷器は、笠型の外被２、複数本のＦＲＰ部材３、円盤状の避雷器素子４、上下の電極５からなる。電極５は複数枚重ねた避雷器素子４を上下から挟み込み、この状態のまま上下の電極５の間をＦＲＰ部材３で補強して避雷器素子４を支持している。   Here, a conventional example of a polymer lightning arrester will be described in detail with reference to FIG. The polymer lightning arrester includes a shade-shaped outer cover 2, a plurality of FRP members 3, a disk-shaped lightning arrester element 4, and upper and lower electrodes 5. The electrode 5 sandwiches a plurality of lightning arrester elements 4 from above and below, and supports the lightning arrester element 4 by reinforcing the space between the upper and lower electrodes 5 with the FRP member 3 in this state.

これらの部材のうち、ＦＲＰ部材３はガラス繊維とエポキシ樹脂等の熱硬化型樹脂から成る繊維強化樹脂であり、機械強度が高く、耐衝撃性の高い材料である。避雷器素子４は酸化亜鉛を主成分とした非直線抵抗体素子である。電極５には鉄やアルミ等の金属を使用している。ポリマー避雷器とは、以上のＦＲＰ部材３、避雷器素子４及び電極５を内部部品として、高分子（ポリマー）製の外被２で包み込んだ構造となっている。   Among these members, the FRP member 3 is a fiber reinforced resin made of a glass fiber and a thermosetting resin such as an epoxy resin, and is a material having high mechanical strength and high impact resistance. The lightning arrester element 4 is a non-linear resistor element mainly composed of zinc oxide. The electrode 5 is made of metal such as iron or aluminum. The polymer lightning arrester has a structure in which the FRP member 3, the lightning arrester element 4 and the electrode 5 described above are encased in a polymer (polymer) jacket 2.

以上のようなポリマー避雷器は屋外で使用されることが多い。したがって、太陽光や降雨等に晒されるとともに、大気中に浮遊する塵埃の付着により汚損される。このような使用環境において、光、雨晒しや汚損物付着に耐えるため、外被２には耐候性があって衝撃に強いゴム材料を使用している。   Such polymer lightning arresters are often used outdoors. Therefore, it is exposed to sunlight, rain, etc., and is polluted by adhesion of dust floating in the atmosphere. In such a use environment, the outer cover 2 is made of a rubber material that is weather resistant and resistant to impacts in order to withstand light, rain exposure, and contamination.

より具体的にはエチレンプロピレンゴム（ＥＰＤＭ）、エチレンビニルアセテート（ＥＶＡ）、シリコーンゴム等の高分子材料が外被２として用いられている。特に近年では、シリコーンゴム製の外被２が広く適用されている。シリコーンゴムは高い耐候性を持ち、長期間に渡って撥水性を維持することにより高い耐汚損性を発揮し続けることが可能である。   More specifically, a polymer material such as ethylene propylene rubber (EPDM), ethylene vinyl acetate (EVA), or silicone rubber is used as the outer cover 2. Particularly in recent years, a jacket 2 made of silicone rubber has been widely applied. Silicone rubber has high weather resistance, and can maintain high antifouling property by maintaining water repellency over a long period of time.

ところで、外被２に用いられるシリコーンゴムは、長期にわたり撥水性を維持するといった特徴に加えて、ガス透過性が高く、特に水蒸気を透過し易いという特徴も有している。このため、湿潤、高温多湿な環境にシリコーンゴム製の外被２を持つポリマー避雷器を置いた場合、実際には希であるが、外被２を透過した水蒸気がＦＲＰ部材３や避雷器素子４にまで浸透し、内部に達する可能性がある。また、外被２と電極５との接合面の接着強さが不十分で、両者のはく離や欠陥等の問題が起きた場合には、はく離した外被２と電極５の界面を通して水分が内部に浸入して、ポリマー避雷器の性能を低下させるおそれがあった。   By the way, the silicone rubber used for the outer jacket 2 has a feature that it has high gas permeability and in particular easily permeates water vapor, in addition to the feature of maintaining water repellency over a long period of time. For this reason, when the polymer lightning arrester having the outer cover 2 made of silicone rubber is placed in a humid, hot and humid environment, the water vapor that has permeated the outer cover 2 is rarely present in the FRP member 3 or the lightning arrester element 4. Can penetrate and reach the inside. In addition, when the adhesive strength of the joint surface between the outer cover 2 and the electrode 5 is insufficient and a problem such as peeling or defect occurs between the two, the moisture is internally passed through the interface between the peeled outer cover 2 and the electrode 5. There is a risk that the performance of the polymer lightning arrester will deteriorate.

つまり、外被２にシリコーンゴムを使用したポリマー避雷器では、外被２と内部部品との間に水分が浸透することを防ぎ、両者の界面に水分が溜まらないようにすることが重要である。これを確実に実現するためには、内部部品であるＦＲＰ部材３、避雷器素子４及び電極５と、これらを包む外被２とを強固に接着する必要がある。そこで従来では、前記内部部品の表面にプライマー剤と称するシリコーン系液体を下地剤として塗布し、外被２と内部部品との接着性を高めるようにしている。
特開平８−１４８３１１号公報 That is, in the polymer lightning arrester using the silicone rubber for the jacket 2, it is important to prevent moisture from penetrating between the jacket 2 and the internal parts so that moisture does not accumulate at the interface between the two. In order to realize this reliably, it is necessary to firmly bond the FRP member 3, the lightning arrester element 4, and the electrode 5, which are internal components, and the outer cover 2 that wraps them. Therefore, conventionally, a silicone-based liquid called a primer agent is applied as a base agent to the surface of the internal part to enhance the adhesion between the outer cover 2 and the internal part.
Japanese Patent Laid-Open No. 8-148311

しかしながら、上記の従来技術には次のような課題が指摘されていた。すなわち、前記プライマー剤はシリコーン系液体なので、これを内部部品（ＦＲＰ部材３、避雷器素子４及び電極５）の表面に塗布する場合には、刷毛やスプレーによって塗布作業を行っている。このプライマー剤の塗布作業は、前記内部部品３〜５の組み立て後に塗り残し部分を塗布する必要がある等、作業を機械化することは困難であり、手作業となることが多く、面倒であった。   However, the following problems have been pointed out in the above prior art. That is, since the primer agent is a silicone-based liquid, when it is applied to the surfaces of the internal components (FRP member 3, lightning arrester element 4 and electrode 5), the application work is performed by brush or spray. This primer application work is difficult to mechanize the work, such as the need to apply the unpainted part after assembling the internal parts 3 to 5, and is often a manual work and is troublesome. .

さらに、仮にプライマー剤の塗布作業に機械を使用したとしても、プライマー剤の塗布量を適切にコントロールしてプライマー剤層の厚さを均一に管理することは非常に難しかった。プライマー剤の塗布ムラがあれば、内部部品３〜５と外被２との接着性が低下する要因となる。そのため、プライマー剤の塗布作業は丁寧な作業が要求されている。したがって、プライマー剤の塗布作業は作業効率が低く、製造コストの増大を招いていた。   Furthermore, even if a machine is used for the primer application operation, it has been very difficult to control the primer agent coating amount appropriately to uniformly control the thickness of the primer agent layer. If there is uneven application of the primer agent, the adhesiveness between the internal components 3 to 5 and the outer cover 2 is reduced. Therefore, a polite work is required for the primer application work. Accordingly, the primer agent application operation has low work efficiency and has led to an increase in manufacturing cost.

一方、絶縁性能上問題ならない程度であったとしても、外被２を水分が透過した場合、透過した水分は僅かずつであるが、内部の各部品３〜５に浸透していく。従って、製品の信頼性向上及び長寿命化のためには、外被２と内部部品３〜５の接着性をいっそう向上させると同時に、こうした内部部品３〜５自体への水分浸透を防ぐことが求められている。   On the other hand, even if there is no problem in insulation performance, when moisture permeates through the jacket 2, the permeated moisture permeates little by little but penetrates into the internal components 3-5. Therefore, in order to improve the reliability of the product and prolong the service life, it is possible to further improve the adhesion between the jacket 2 and the internal parts 3 to 5 and at the same time prevent moisture penetration into the internal parts 3 to 5 itself. It has been demanded.

以上述べたように、ポリマー避雷器に関しては、外被２と内部部品３〜５との接着性を高め、内部部品３〜５への水分浸透を防止して、製品の信頼性及び寿命を延ばすと共に、接着性を高める層を確実且つ安定して形成させることにより、作業効率の向上と製造コストの低減が期待されている。   As described above, with respect to the polymer lightning arrester, the adhesion between the outer cover 2 and the internal parts 3 to 5 is enhanced, moisture penetration into the internal parts 3 to 5 is prevented, and the reliability and life of the product are extended. It is expected that the working efficiency is improved and the manufacturing cost is reduced by reliably and stably forming a layer that enhances adhesion.

本発明は、以上の課題を解決するために提案されたものであり、外被と内部部品との接着性をより一層高め、内部部品への水分浸透を防止することにより、製品の信頼性向上及び長寿命化を実現して品質信頼性に優れたポリマー避雷器を提供すると共に、このようなポリマー避雷器を安定して安価に製造する方法を提供することを目的としている。   The present invention has been proposed to solve the above-described problems, and further improves the reliability of the product by further improving the adhesion between the outer cover and the internal part and preventing moisture from penetrating into the internal part. An object of the present invention is to provide a polymer lightning arrester that realizes a long life and is excellent in quality reliability, and provides a method for stably and inexpensively manufacturing such a polymer lightning arrester.

上記の課題を解決するため、本発明は、複数の避雷器素子を積み重ねて電極で挟み込み、前記電極をＦＲＰ部材で接続して前記避雷器素子を保持すると共に、前記ＦＲＰ部材、前記避雷器素子及び前記電極を高分子製の外被で包み込んでなるポリマー避雷器において、前記ＦＲＰ部材、前記避雷器素子及び前記電極の表面に、ダイヤモンドライクカーボン（ＤＬＣ）処理で作製されたＤＬＣ層を設けたことを特徴としている。   In order to solve the above-described problems, the present invention includes a plurality of lightning arrester elements stacked and sandwiched between electrodes, and the electrodes are connected by FRP members to hold the lightning arrester elements, and the FRP members, the lightning arrester elements, and the electrodes In a polymer lightning arrester encased in a polymer sheath, a DLC layer made by diamond-like carbon (DLC) treatment is provided on the surface of the FRP member, the lightning arrester element and the electrode. .

ここでいうダイヤモンドライクカーボン（以下、ＤＬＣとする）とは、非晶質の炭化水素の硬質膜のことであり、ダイヤモンドの結合構造（Ｓｐ３混成軌道）と、グラファイトの結合構造（Ｓｐ２混成軌道）と、両方の結合構造が混在し、炭素が主体であるが、若干の水素を含有する構造を有している。また、製法や条件の選択により、その構造をダイヤモンド寄りあるいはグラファイト寄りに制御することができ、水素含有率の多寡も調整可能なので、必要に応じた性質を容易に作り出すことができるといった利点がある。   The diamond-like carbon (hereinafter referred to as DLC) is an amorphous hydrocarbon hard film, which is a diamond bond structure (Sp3 hybrid orbit) and a graphite bond structure (Sp2 hybrid orbit). In addition, both of the bond structures are mixed and mainly carbon, but has a structure containing some hydrogen. In addition, the structure can be controlled to be close to diamond or graphite by selecting the manufacturing method and conditions, and the amount of hydrogen content can be adjusted, so that it is possible to easily create properties as required. .

こうしてニーズに応じて適宜作製されたＤＬＣは、構造がダイヤモンド寄りあるいはグラファイト寄りであるにせよ、硬くて摩耗に強い、耐薬品性が高くて腐蝕に強い、表面が滑らかで低摩擦である、ガス透過性が低い、電気絶縁性が高いといった、共通の特性を持っている。本発明では、このような特性を有するＤＬＣ層を、ポリマー避雷器の内部部品であるＦＲＰ部材、避雷器素子及び電極の表面に形成することで、水分が外被を透過したとしても、水分が内部部品に浸透することを確実に防ぐことができる。   DLC, which is appropriately manufactured according to needs, is hard and wear resistant, has high chemical resistance and corrosion resistance, has a smooth surface and low friction, even if the structure is close to diamond or graphite. It has common characteristics such as low permeability and high electrical insulation. In the present invention, the DLC layer having such characteristics is formed on the surface of the FRP member, the lightning arrester element, and the electrode, which are the internal parts of the polymer arrester, so that even if the moisture penetrates the outer sheath, Can be surely prevented.

しかも、ＤＬＣは、プラズマＣＶＤ（化学蒸着 Chemical Vapor Deposition）やＰＶＤ（物理蒸着Physical Vapor Deposition）などの蒸着法を使用して形成可能である。したがって、刷毛塗りやスプレー塗装に比べて膜厚制御が容易であり、ＦＲＰ部材と避雷器素子の間等のように僅かな隙間に対しても均一な層厚で安定して且つ一括して、ＤＬＣ層を形成することができる。その結果、製品の品質信頼性を高めることができ、しかも製造コストの低減を図ることも可能となる。   Moreover, the DLC can be formed by using a vapor deposition method such as plasma CVD (chemical vapor deposition) or PVD (physical vapor deposition). Therefore, it is easier to control the film thickness compared to brush coating or spray coating, and even in a small gap such as between the FRP member and a lightning arrester element, the layer thickness can be stably and collectively reduced. A layer can be formed. As a result, the quality reliability of the product can be improved, and the manufacturing cost can be reduced.

本発明によれば、内部部品であるＦＲＰ部材、避雷器素子及び電極の表面に、ＤＬＣ処理で作製されたＤＬＣ層を設け、前記内部部品を高分子製の外被で包み込むといった簡単な構成により、外被と内部部品との接着性をより一層高め、内部部品への水分浸透を防止することが可能となり、製品の信頼性向上及び長寿命化を実現し、さらには品質信頼性及び経済性に優れたポリマー避雷器及びその製造方法を提供することができる。   According to the present invention, the DRP layer produced by DLC processing is provided on the surface of the FRP member, the lightning arrester element, and the electrode that are internal components, and the internal components are encased in a polymer jacket. It is possible to further improve the adhesion between the outer cover and the internal parts, prevent moisture penetration into the internal parts, improve the product reliability and extend the service life, and improve the quality reliability and economy. An excellent polymer lightning arrester and a method for manufacturing the same can be provided.

（１）構成
以下、本発明に係る代表的な実施形態の一例について図１を用いて具体的に説明する。本実施形態に係るポリマー避雷器は、図２に示した従来技術と同じく、複数の避雷器素子４を積み重ねてアルミ製の電極５で挟み込み、電極４をＦＲＰ部材３で連結、接続して避雷器素子４を保持すると共に、ＦＲＰ部材３、避雷器素子４及び電極５を高分子製の外被２で包み込んでなるポリマー避雷器である。 (1) Configuration Hereinafter, an example of a representative embodiment according to the present invention will be specifically described with reference to FIG. In the polymer lightning arrester according to the present embodiment, a plurality of lightning arrester elements 4 are stacked and sandwiched between aluminum electrodes 5 as in the prior art shown in FIG. Is a polymer lightning arrester in which the FRP member 3, the lightning arrester element 4 and the electrode 5 are encased in a polymer sheath 2.

図１に示すように、本実施形態の構成上の特徴は、ＦＲＰ部材３、避雷器素子４及び電極５の表面に、ダイヤモンドライクカーボン処理で作製されたＤＬＣ層１を設けた点にある。また、外被２を、付加型液状シリコーンゴム、より詳しくは熱硬化温度１００℃以上の熱硬化型シリコーンゴムから構成した点も、本実施形態の特徴である。   As shown in FIG. 1, the structural feature of this embodiment is that a DLC layer 1 made by diamond-like carbon treatment is provided on the surfaces of the FRP member 3, the lightning arrester element 4 and the electrode 5. Another feature of the present embodiment is that the outer cover 2 is made of addition-type liquid silicone rubber, more specifically, thermosetting silicone rubber having a thermosetting temperature of 100 ° C. or higher.

（２）製造方法
以上のポリマー避雷器は次のようにして製造する。まず、内部部品であるＦＲＰ部材３、避雷器素子４及び電極５を組み立てる。 (2) Manufacturing method The above polymer lightning arrester is manufactured as follows. First, the FRP member 3, the lightning arrester element 4, and the electrode 5 which are internal components are assembled.

［内部部品組立工程］
すなわち、電極５の上に避雷器素子４を所定枚数重ね、その上に電極５を配置する。上下の電極５を複数本のＦＲＰ部材３で連結し、ＦＲＰ部材３に張力を与えることで、電極５と避雷器素子４、並びに避雷器素子４同士を密着させる。そして、避雷器素子４及び電極５がずれないように起立させる。 [Internal parts assembly process]
That is, a predetermined number of lightning arrester elements 4 are stacked on the electrode 5, and the electrode 5 is disposed thereon. By connecting the upper and lower electrodes 5 with a plurality of FRP members 3 and applying tension to the FRP members 3, the electrodes 5 and the lightning arrester elements 4 and the lightning arrester elements 4 are brought into close contact with each other. Then, the lightning arrester element 4 and the electrode 5 are erected so as not to shift.

［電極マスキング工程］
なお、電気絶縁性を有するＤＬＣ層１が導通を必要とする部分に付着するのを防ぐために、電極５の一部をマスキングしておく。 [Electrode masking process]
In order to prevent the DLC layer 1 having electrical insulation from adhering to a portion requiring conduction, a part of the electrode 5 is masked.

［ダイヤモンドライクカーボン処理工程］
こうして組み立てた内部部品に対して、プラズマＣＶＤやＰＶＤなどの蒸着法を用いて、ＦＲＰ部材３及び避雷器素子４の表面、並びに電極５の一部面を覆うようにして、ＤＬＣ層１でコーティングする。 [Diamond-like carbon treatment process]
The internal parts thus assembled are coated with the DLC layer 1 so as to cover the surfaces of the FRP member 3 and the lightning arrester element 4 and a part of the electrode 5 by using a vapor deposition method such as plasma CVD or PVD. .

［外被形成工程］
そして、ＤＬＣ層１を施した内部部品を所定の型にセットし、この型に前記液状シリコーンゴムを注入、熱硬化して外被２を形成する。 [Coating process]
Then, the internal component provided with the DLC layer 1 is set in a predetermined mold, and the liquid silicone rubber is injected into this mold and thermally cured to form the outer cover 2.

（３）作用効果
上記のような本実施形態の作用効果は次の通りである。ＤＬＣ層１は、前述したように、耐摩耗性、耐薬品性に強く、ガス透過性が低いといった特性を有している。このような特性を持つＤＬＣ層１を、ＦＲＰ部材３及び避雷器素子４の表面に形成することにより、外被２を透過した水分、特に水蒸気がＦＲＰ部材３や避雷器素子４に浸透することを確実に防ぐことが可能になる。 (3) Operational Effects The operational effects of the present embodiment as described above are as follows. As described above, the DLC layer 1 has characteristics such as high resistance to abrasion and chemicals and low gas permeability. By forming the DLC layer 1 having such characteristics on the surfaces of the FRP member 3 and the lightning arrester element 4, it is ensured that moisture, particularly water vapor, that has passed through the outer sheath 2 permeates the FRP member 3 and the lightning arrester element 4. It becomes possible to prevent.

また、前記ＤＬＣ層１を、電極５の一部にも形成しているので、たとえ外被２と電極５との接合面の接着強さが不十分で、はく離した外被２と電極５の界面を通して水分が内部に浸入した場合でも、ＤＬＣ層１が内部への水分浸透を防ぐことができる。したがって、ポリマー避雷器の性能を低下させる心配がない。   Further, since the DLC layer 1 is also formed on a part of the electrode 5, even if the bonding strength between the outer cover 2 and the electrode 5 is insufficient, the peeled outer cover 2 and the electrode 5 are separated from each other. Even when moisture enters the inside through the interface, the DLC layer 1 can prevent moisture penetration into the inside. Therefore, there is no fear of reducing the performance of the polymer lightning arrester.

さらに、ＤＬＣ層１は、プラズマＣＶＤあるいはＰＶＤなどの蒸着法により形成可能であるため、刷毛塗りやスプレー塗装に比べて膜厚の制御、管理を容易に実施することができる。また、ＦＲＰ部材３と避雷器素子４の間などの僅かな隙間にも均一な層厚を安定して形成することができる。   Furthermore, since the DLC layer 1 can be formed by a vapor deposition method such as plasma CVD or PVD, the film thickness can be easily controlled and managed as compared with brush coating or spray coating. Further, a uniform layer thickness can be stably formed even in a slight gap such as between the FRP member 3 and the lightning arrester element 4.

しかも、上記蒸着法によるＤＬＣ層１のコーティングは、一度に複数本の処理が可能であり、丁寧な手作業を求められていた従来技術と比較して、格段に作業効率を高めることができる。したがって、表面処理作業の作業品質の向上と製造コストの低減を同時に実現することができる。これにより、品質信頼性及び経済性に優れたポリマー避雷器を獲得することができる。   Moreover, the coating of the DLC layer 1 by the above-described vapor deposition method can perform a plurality of treatments at a time, and the working efficiency can be remarkably improved as compared with the conventional technique that requires careful manual work. Therefore, it is possible to simultaneously improve the work quality of the surface treatment work and reduce the manufacturing cost. Thereby, the polymer lightning arrester excellent in quality reliability and economical efficiency can be acquired.

ところで、既に述べたように、ＤＬＣ層１は耐薬品性が高いという特徴がある。耐薬品性が高いことは、化学的に不活性であることを意味している。一般的に被着体は接着剤などに対して活性である方が接着性は良好なので、ＤＬＣ層１の耐薬品性が良いという性質は、接着性低下の原因になると考えられる。また、通常、接着面は粗面化されていた方が接着性は良好なので、ＤＬＣ層１のように平滑で滑らかな面では、金型に施して離型性を高めるといった利用法が提案されている程なので、接着性を得る処理としては不適当なものと認識されていた。   By the way, as already stated, the DLC layer 1 is characterized by high chemical resistance. High chemical resistance means that it is chemically inert. In general, since the adherend has better adhesiveness when it is more active with respect to an adhesive or the like, the chemical resistance of the DLC layer 1 is considered to cause a decrease in adhesiveness. Also, since the adhesive surface is usually rougher when the adhesive surface is roughened, a method of applying to the mold to improve the releasability on a smooth and smooth surface like the DLC layer 1 has been proposed. Therefore, it was recognized that the treatment for obtaining adhesiveness was inappropriate.

このような接着性の低さを解決するために、本件出願人はシリコーンゴムのタイプとＤＬＣ処理面との接着性を調査、検討した。シリコーンには硬化反応が付加型のものと縮合型のものとがあるが、調査、検討の結果、本件出願人は、硬化反応が付加型のシリコーンゴム、特に熱硬化するタイプのシリコーンゴム（一般的には１００℃以上の熱硬化温度を持つ）がＤＬＣ処理面に対して良好な接着性を得ることを見出した。   In order to solve such low adhesiveness, the present applicant investigated and examined the adhesiveness between the silicone rubber type and the DLC-treated surface. There are two types of silicone, the addition type and the condensation type. As a result of investigations and studies, the applicant has found that the addition reaction is an addition type silicone rubber, especially a silicone rubber that is thermally cured (general In particular, it has been found that (having a thermosetting temperature of 100 ° C. or higher) obtains good adhesion to the DLC-treated surface.

例えば、アルミ板にただ熱硬化型シリコーンゴムを塗布した試料と、表面にＤＬＣ処理を施したアルミ板に熱硬化型シリコーンゴムを塗布した試料を作製し、両者を１９０℃で３０分間熱硬化した。そして、加熱した試料を室温まで冷却し、アルミ板表面及びＤＬＣ処理面にできたシリコーンゴム膜の引き剥がし試験を行なった。   For example, a sample in which a thermosetting silicone rubber is simply applied to an aluminum plate and a sample in which a thermosetting silicone rubber is applied to an aluminum plate whose surface has been subjected to DLC treatment are prepared, and both are thermoset at 190 ° C. for 30 minutes. . And the heated sample was cooled to room temperature, and the peeling test of the silicone rubber film formed on the aluminum plate surface and the DLC treated surface was performed.

その結果、アルミ板表面のシリコーンゴム膜は容易且つ完全にアルミ板面から引き剥がすことができたのに対し、ＤＬＣ処理面のシリコーンゴム膜は強固に下地と接着しており、引き剥がすことが出来なかった。このように、一般的には離型性を示す材料として認識されているＤＬＣであるが、熱硬化型シリコーンゴムと組合せることにより、ＤＬＣ層１はプライマー剤層と同じ役目を果たすことが可能であることが判明した。   As a result, the silicone rubber film on the aluminum plate surface could be easily and completely peeled off from the aluminum plate surface, while the silicone rubber film on the DLC-treated surface was firmly adhered to the base and could be peeled off. I could not do it. In this way, DLC is generally recognized as a material exhibiting releasability, but when combined with thermosetting silicone rubber, DLC layer 1 can play the same role as the primer layer. It turned out to be.

すなわち、本実施形態においては、ポリマー避雷器の内部部品であるＦＲＰ部材３、避雷器素子４及び電極５に関して外被２に覆われる部分を予めＤＬＣ処理してＤＬＣ層１を設けておき、その後、これら部品を熱硬化型のシリコーンゴムでモールドして外被２を形成しているので、外被２であるシリコーンゴムとの内部部品３〜５との接着性は極めて良好となり、接着品質を高めることができる。しかも、上述したようにＤＬＣ層１はガス透過性が低いため、外被２を通して浸透してきた水分、特に水蒸気に対して、ＦＲＰ部材３や避雷器素子４への浸透防止効果を得ることができ、ポリマー避雷器の信頼性を高め、長寿命化に寄与することができる。   That is, in the present embodiment, the DRP layer 1 is provided by subjecting the FRP member 3, the lightning arrester element 4, and the electrode 5, which are internal parts of the polymer lightning arrester, to the portion covered with the outer sheath 2 in advance and then providing the DLC layer 1. Since the outer mold 2 is formed by molding the parts with thermosetting silicone rubber, the adhesion between the inner rubber components 3 and 5 and the silicone rubber as the outer casing 2 is extremely good, and the quality of the adhesion is improved. Can do. In addition, since the DLC layer 1 has low gas permeability as described above, it is possible to obtain an effect of preventing penetration into the FRP member 3 and the lightning arrester element 4 with respect to moisture, particularly water vapor, that has permeated through the jacket 2. The reliability of the polymer lightning arrester can be improved and the service life can be extended.

以上述べたように、本実施形態に係るポリマー避雷器及びその製造方法によれば、ポリマー避雷器の内部部品であるＦＲＰ部材３、避雷器素子４及び電極５にＤＬＣ層１を設け、熱硬化型のシリコーンゴム製の外被２で包み込むといった極めて簡単な構成により、外被２と内部部品３〜５との接着性を一層高めることができ、内部部品３〜５への水分浸透を防止することが可能であって、製品の信頼性向上及び長寿命化を実現した。   As described above, according to the polymer lightning arrester and the manufacturing method thereof according to the present embodiment, the DRP layer 1 is provided on the FRP member 3, the lightning arrester element 4, and the electrode 5 that are internal parts of the polymer lightning arrester, and the thermosetting silicone The extremely simple structure of wrapping with a rubber jacket 2 can further enhance the adhesion between the jacket 2 and the internal components 3 to 5, and can prevent moisture penetration into the internal components 3 to 5. Thus, the reliability of the product was improved and the service life was extended.

さらには、ＤＬＣ層１を形成する際、プラズマＣＶＤあるいはＰＶＤなどの蒸着法を採用可能なので、層厚の制御や管理が容易であり、複数の部材への表面処理を一括して実施することができる。これにより、作業効率を格段に高めることができ、品質信頼性及び経済性の向上に寄与することができた。   Furthermore, when the DLC layer 1 is formed, a deposition method such as plasma CVD or PVD can be adopted, so that the layer thickness can be easily controlled and managed, and the surface treatment on a plurality of members can be performed collectively. it can. As a result, the work efficiency can be remarkably increased, and it is possible to contribute to the improvement of quality reliability and economic efficiency.

（４）他の実施形態
なお、本発明は以上の実施形態に限定されるものではなく、各構成部材の形状や配置数等は適宜変更可能であり、例えば、外被を構成する付加型液状シリコーンゴムの種類なども適宜選択可能である。 (4) Other Embodiments The present invention is not limited to the above-described embodiments, and the shape and number of components of each component can be changed as appropriate. The type of silicone rubber can also be selected as appropriate.

本発明の代表的な実施形態の要部断面図。The principal part sectional view of the typical embodiment of the present invention. 従来のポリマー避雷器の断面図。Sectional drawing of the conventional polymer lightning arrester.

符号の説明Explanation of symbols

１…ＤＬＣ層
２…外被
３…ＦＲＰ部材
４…避雷器素子
５…電極 DESCRIPTION OF SYMBOLS 1 ... DLC layer 2 ... Jacket | cover 3 ... FRP member 4 ... Lightning arrester element 5 ... Electrode

Claims (4)

複数の避雷器素子を積み重ねて電極で挟み込み、上下の前記電極をＦＲＰ部材で接続して前記電極間に前記避雷器素子を保持すると共に、前記ＦＲＰ部材、前記避雷器素子及び前記電極を高分子製の外被で包み込んでなるポリマー避雷器において、
前記ＦＲＰ部材、前記避雷器素子及び前記電極の表面に、ダイヤモンドライクカーボン（ＤＬＣ）処理で作製されたＤＬＣ層を設けたことを特徴とするポリマー避雷器。 A plurality of lightning arrester elements are stacked and sandwiched between electrodes, and the upper and lower electrodes are connected by FRP members to hold the lightning arrester elements between the electrodes, and the FRP member, the lightning arrester elements and the electrodes are made of a polymer outer In a polymer lightning arrester wrapped in a jacket,
A polymer lightning arrester comprising a DLC layer produced by diamond-like carbon (DLC) treatment on the surface of the FRP member, the lightning arrester element and the electrode. 前記外被を付加型液状シリコーンゴムから構成したことを特徴とする請求項１に記載のポリマー避雷器。   2. The polymer lightning arrester according to claim 1, wherein the outer cover is made of an addition type liquid silicone rubber. 前記付加型液状シリコーンゴムは熱硬化温度１００℃以上の熱硬化型シリコーンゴムであることを特徴とする請求項２に記載のポリマー避雷器。   The polymer lightning arrester according to claim 2, wherein the additional liquid silicone rubber is a thermosetting silicone rubber having a thermosetting temperature of 100 ° C or higher. 請求項１〜３のいずれか１項に記載のポリマー避雷器を製造するための方法であって、
前記ＦＲＰ部材、前記避雷器素子及び前記電極を所定の形状に組み立てる内部部品組立工程と、
前記電極の一部をマスキングする電極マスキング工程と、
蒸着法により複数本一括で前記ＤＬＣ層を設けるダイヤモンドライクカーボン処理工程と、
ダイヤモンドライクカーボン処理を施した部品を型にセットし、この型に前記液状シリコーンゴムを注入、熱硬化して前記外被を形成する外被形成工程を含むことを特徴とするポリマー避雷器の製造方法。 A method for producing the polymer lightning arrester according to any one of claims 1-3.
An internal component assembling step for assembling the FRP member, the lightning arrester element and the electrode into a predetermined shape;
An electrode masking step for masking a part of the electrode;
A diamond-like carbon treatment step in which a plurality of the DLC layers are provided by a vapor deposition method;
A method for manufacturing a polymer lightning arrester, comprising: setting a part subjected to diamond-like carbon treatment in a mold, injecting the liquid silicone rubber into the mold, and thermosetting to form the outer cover. .
JP2007089330A 2007-03-29 2007-03-29 Polymer lightning arrester and manufacturing method thereof Expired - Fee Related JP5025303B2 (en)

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JPH081828A (en) * 1994-06-20 1996-01-09 Arai Pump Mfg Co Ltd Rubber insulator, manufacture thereof, and device therefor
JPH08148311A (en) * 1994-11-17 1996-06-07 Meidensha Corp Polymer arrester
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9484123B2 (en) 2011-09-16 2016-11-01 Prc-Desoto International, Inc. Conductive sealant compositions
JPWO2018062509A1 (en) * 2016-09-30 2019-06-24 京セラ株式会社 Solar cell module

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