JPH073245U - Epoxy resin cast product - Google Patents
Epoxy resin cast productInfo
- Publication number
- JPH073245U JPH073245U JP3865993U JP3865993U JPH073245U JP H073245 U JPH073245 U JP H073245U JP 3865993 U JP3865993 U JP 3865993U JP 3865993 U JP3865993 U JP 3865993U JP H073245 U JPH073245 U JP H073245U
- Authority
- JP
- Japan
- Prior art keywords
- epoxy resin
- metal electrode
- embedded
- product
- coating layer
- 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
- 239000003822 epoxy resin Substances 0.000 title claims abstract description 41
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 41
- 229910052751 metal Inorganic materials 0.000 claims abstract description 47
- 239000002184 metal Substances 0.000 claims abstract description 47
- 238000010073 coating (rubber) Methods 0.000 claims abstract description 15
- 239000011247 coating layer Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- 238000010125 resin casting Methods 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 6
- 238000005336 cracking Methods 0.000 abstract description 4
- 238000005187 foaming Methods 0.000 description 5
- 230000008602 contraction Effects 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Cable Accessories (AREA)
Abstract
(57)【要約】
【目的】 界面剥離及びエポキシ樹脂のクラックの発生
を防止したエポキシ樹脂注型品を提供する。
【構成】 内部に金属電極１を埋込んだエポキシ樹脂注
型品において、金属電極１の外側に発泡導電性樹脂３を
介して半導電性ゴム被覆層２を設けたエポキシ樹脂注型
品。
(57) [Summary] [Purpose] To provide an epoxy resin casting product in which interfacial peeling and epoxy resin cracking are prevented. [Constitution] An epoxy resin casting product having a metal electrode 1 embedded therein, wherein a semi-conductive rubber coating layer 2 is provided on the outside of the metal electrode 1 with a foamed conductive resin 3 interposed therebetween.
Description
【０００１】[0001]
本考案は、例えば電力の送配電に供する電力ケーブルの接続部品として多く利 用されている内部に金属電極を埋込んだエポキシ樹脂注型品の改良に関するもの である。 The present invention relates to an improvement in an epoxy resin cast product having a metal electrode embedded inside, which is often used as a connecting part for a power cable used for power transmission and distribution, for example.
【０００２】[0002]
図４は内部に金属電極を埋込んだエポキシ樹脂注型品の一例の上半分の縦断面 図である。図面において、１はエポキシ樹脂Ａ中に埋込まれ一体成形された金属 電極である。この金属電極１の表面には、埋込まれた金属電極１とその周囲のエ ポキシ樹脂Ａの熱膨張係数や弾性係数の相違によって、両者の界面に生ずるおそ れがある剥離やクラック等を緩和するために半導電性ゴム被覆層２が設けられて いる。 FIG. 4 is a vertical cross-sectional view of the upper half of an example of an epoxy resin cast product in which a metal electrode is embedded. In the drawing, 1 is a metal electrode which is embedded in epoxy resin A and integrally molded. On the surface of this metal electrode 1, due to the difference in the thermal expansion coefficient and elastic coefficient of the embedded metal electrode 1 and the surrounding epoxy resin A, the peeling and cracks at the interface between the two are alleviated. For this purpose, the semiconductive rubber coating layer 2 is provided.
【０００３】[0003]
上述した従来のエポキシ樹脂注型品においても、半導電ゴム被覆層の熱膨張係 数が、エポキシ樹脂や金属電極のそれに比べて大きいために、エポキシ樹脂や金 属電極の界面で剥離をおこしたり、あるいは半導電性ゴム被覆層の膨張圧力によ り、エポキシ樹脂にクラックが生じたりして、比較的低い電圧で電気破壊すると いう問題点があった。 Even in the conventional epoxy resin cast product described above, the coefficient of thermal expansion of the semiconductive rubber coating layer is larger than that of the epoxy resin or the metal electrode, so that peeling may occur at the interface of the epoxy resin or the metal electrode. Or, the expansion pressure of the semiconductive rubber coating layer may cause cracks in the epoxy resin, resulting in electrical breakdown at a relatively low voltage.
【０００４】[0004]
本考案は上述の問題点を解消し、界面剥離やエポキシ樹脂のクラックの発生を 防止したエポキシ樹脂注型品を提供するもので、その第１の特徴は、金属電極の 外側に発泡導電性樹脂を介して半導電性ゴム被覆層を設けたことにある。 The present invention solves the above-mentioned problems and provides an epoxy resin casting product in which the occurrence of interfacial peeling and the cracking of epoxy resin is prevented. The first feature of the present invention is to provide a foamed conductive resin on the outside of the metal electrode. There is a semi-conductive rubber coating layer provided through.
【０００５】 そして、本考案の第２の特徴は、金属電極の外側に綿状の金属繊維を介して半 導電性ゴム被覆層を設けたことにあり、さらに、第３の特徴は、金属電極の表面 に発泡導電性ゴム層及び半導電性熱収縮チューブを順次設けたことにある。A second feature of the present invention resides in that a semi-conductive rubber coating layer is provided on the outer side of the metal electrode via a cotton-like metal fiber, and the third feature is that the metal electrode is provided. This is because the foamed conductive rubber layer and the semiconductive heat-shrinkable tube were sequentially provided on the surface of the.
【０００６】[0006]
図１は本考案のエポキシ樹脂注型品の第１の特徴による具体例の上半分の縦断 面図である。図面に示すように、エポキシ樹脂Ａ中に埋込まれている金属電極１ の外側には発泡導電性樹脂３を介して半導電性ゴム被覆層２が設けられている。 上記発泡導電性樹脂の発泡率（空気層の体積／全体の体積の割合）としては、 5.0％〜45.0％の範囲が望ましい。 このようなエポキシ樹脂注型品においては、導電性ゴム被覆層２の膨張、収縮 を発泡導電性樹脂３で吸収することができ、界面剥離及びエポキシ樹脂のクラッ クの発生を防止することができる。 FIG. 1 is a vertical sectional view of the upper half of a concrete example of the first feature of the epoxy resin cast product of the present invention. As shown in the drawing, a semiconductive rubber coating layer 2 is provided on the outer side of the metal electrode 1 embedded in the epoxy resin A via a foamed conductive resin 3. The foaming rate (volume ratio of air layer / total volume ratio) of the foamed conductive resin is preferably in the range of 5.0% to 45.0%. In such an epoxy resin cast product, the expansion and contraction of the conductive rubber coating layer 2 can be absorbed by the foamed conductive resin 3, and the interface peeling and the crack of the epoxy resin can be prevented. .
【０００７】 図２は本考案のエポキシ樹脂注型品の第２の特徴による埋込み金具の具体例の 縦断面図である。図面に示すように、金属電極１の外側には綿状の金属繊維４を 介して半導電性ゴム被覆層２が設けられている。上記綿状の金属繊維４としては 直径0.05mm未満の金属線を用いることが望ましい。 このような埋込み金具を埋込んだエポキシ樹脂注型品においては、導電性ゴム 被覆層２の膨張、収縮を綿状の金属繊維４で吸収することができ、界面剥離及び エポキシ樹脂のクラックの発生を防止することができる。FIG. 2 is a vertical cross-sectional view of a concrete example of the embedded metal fitting according to the second feature of the epoxy resin cast product of the present invention. As shown in the drawing, a semiconductive rubber coating layer 2 is provided on the outer side of the metal electrode 1 via a cotton-like metal fiber 4. As the cotton-like metal fiber 4, it is desirable to use a metal wire having a diameter of less than 0.05 mm. In the epoxy resin cast product in which such an embedding metal fitting is embedded, expansion and contraction of the conductive rubber coating layer 2 can be absorbed by the cotton-like metal fiber 4, causing interfacial peeling and cracking of the epoxy resin. Can be prevented.
【０００８】 図３は本考案のエポキシ樹脂注型品の第３の特徴による埋込み金具の具体例の 縦断面図である。図面に示すように、金属電極１の表面には、発泡導電性ゴム層 ５及び導電性熱収縮チューブ６が順次設けられている。 このような埋込み金具を埋込んだエポキシ樹脂注型品においては、導電性ゴム 層５の膨張、収縮は自身の発泡性及び熱収縮チューブ６の収縮力によって吸収す ることができ、界面剥離及びエポキシ樹脂のクラックの発生を防止することがで きる。FIG. 3 is a vertical cross-sectional view of a concrete example of the embedded metal fitting according to the third feature of the epoxy resin cast product of the present invention. As shown in the drawing, a foamed conductive rubber layer 5 and a conductive heat-shrinkable tube 6 are sequentially provided on the surface of the metal electrode 1. In the epoxy resin cast product in which such an embedded metal fitting is embedded, the expansion and contraction of the conductive rubber layer 5 can be absorbed by the foamability of itself and the contraction force of the heat-shrinkable tube 6, resulting in interfacial peeling and It is possible to prevent cracking of the epoxy resin.
【０００９】[0009]
【実験例１】 金属電極としてアルミを用い、図１のように金属電極の外側に発泡導電性樹脂 を介して半導電性ゴム被覆層を設けた埋込み金具（本考案品）と、図４のように 、金属電極の表面に直接半導電性ゴム被覆層を設けた埋込み金具（従来品）を作 成し、これらの金具の周囲にエポキシ樹脂（チバガイギー社製ＣＴ−２００） 100重量部及び硬化剤（チバガイギー社製ＨＴ−９０３）を充填し、加熱硬化さ せて２種類のエポキシ樹脂注型品を作成した。なお、本考案品の発泡導電性樹脂 の発泡率は10％であった。[Experimental Example 1] Using an aluminum metal electrode, an embedded metal fitting (the present invention) having a semiconductive rubber coating layer on the outside of the metal electrode via a foamed conductive resin as shown in FIG. As described above, the embedded metal fittings (conventional product) in which the semi-conductive rubber coating layer is directly provided on the surface of the metal electrode are formed, and 100 parts by weight of the epoxy resin (CT-200 manufactured by Ciba-Geigy Co., Ltd.) and the curing are provided around these metal fittings. Agent (HT-903 manufactured by Ciba-Geigy) was filled and heat-cured to prepare two kinds of epoxy resin cast products. The foamed conductive resin of the present invention had a foaming rate of 10%.
【００１０】 上記エポキシ樹脂注型品の各５個を 100℃60分、０℃60分の条件で、各３サイ クルのヒートショックテストを行った結果、本考案品ではクラックの発生は認め られなかったが、従来品では５個中３個にクラックが発生し、本考案品の効果が 確認された。As a result of conducting a heat shock test for three cycles of each of the above-mentioned five epoxy resin cast products under conditions of 100 ° C. for 60 minutes and 0 ° C. for 60 minutes, it was confirmed that cracks were generated in the product of the present invention. However, in the conventional product, 3 out of 5 cracks occurred, confirming the effect of the product of the present invention.
【００１１】 次に、本考案品について、発泡導電性樹脂の発泡率を種々変更して同様の試験 を行った。結果を表１に示す。 この結果より、発泡導電性樹脂は発泡率 5.0％〜45.0％のものを用いることで 、信頼性の高い製品が得られることがわかった。なお、発泡率の上限45.0％につ いては、45.0％以上では充分な導電性が得られないためである。Next, with respect to the product of the present invention, the same test was performed by changing the foaming rate of the foamed conductive resin variously. The results are shown in Table 1. From this result, it was found that a highly reliable product can be obtained by using a foamed conductive resin having a foaming rate of 5.0% to 45.0%. The upper limit of the foaming rate of 45.0% is because if it is 45.0% or more, sufficient conductivity cannot be obtained.
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【実験例２】 図２に示す埋込み金具（本考案品）と、図４に示す埋込み金具（従来品）を用 いて前記同様２種類のエポキシ樹脂注型品を作成し、前記同様のヒートサイクル テストを実施した結果、本考案品は供試品５個についてクラックの発生は認めら れなかったが、従来品は供試品５個中、３個にクラックの発生が認められた。[Experimental Example 2] Two kinds of epoxy resin casting products were made in the same manner as above using the embedded metal fitting (present invention product) shown in Fig. 2 and the embedded metal fitting shown in Fig. 4 (conventional product), and the same heat cycle as described above. As a result of the test, no cracks were found in the five test products of the present invention, but cracks were found in three of the five test products of the conventional product.
【００１４】 次に本考案品について、綿状の金属繊維の線種を変更して同様の試験を行った 。結果を表２に示す。なお、中荒、極荒の２種類については気孔率が高すぎて、 安定して作成できないので断念した。 この結果より、綿状の金属繊維として、極細線、中細線、細線を用いることで 、信頼性の高い製品が得られることがわかった。Next, the same test was performed on the product of the present invention by changing the wire type of the cotton-like metal fiber. The results are shown in Table 2. We abandoned the two types of medium-rough and extremely rough because the porosity was too high to make them stable. From these results, it was found that a highly reliable product can be obtained by using ultrafine wire, medium fine wire, and fine wire as the cotton-like metal fiber.
【００１５】[0015]
【実験例３】 図３に示す埋込み金具（本考案品）と、図４に示す埋込み金具（従来品）を用 いて前記同様２種類のエポキシ樹脂注型品を作成し、前記同様のヒートサイクル テストを実施した結果、本考案品は供試品５個についてクラックの発生は認めら れなかったが、従来品は供試品５個中、３個にクラックが発生し、本考案品の考 案が確認された。[Experimental Example 3] Two kinds of epoxy resin casting products were made in the same manner as above using the embedded metal fitting (present invention product) shown in FIG. 3 and the embedded metal fitting shown in FIG. 4 (conventional product), and the same heat cycle as described above. As a result of the test, no cracks were found in the five test products of the present invention, but in the conventional product, cracks occurred in three of the five test products. The plan was confirmed.
【００１６】[0016]
以上説明したように、本考案のエポキシ樹脂注型品によれば、エポキシ樹脂と 金属電極間の界面剥離及びエポキシ樹脂のクラックの発生を防止することができ 、信頼性の高いエポキシ樹脂注型品が得られる。従って、電力ケーブルの接続部 等に利用するとき、その効果は大きい。 As described above, according to the epoxy resin cast product of the present invention, it is possible to prevent the interface peeling between the epoxy resin and the metal electrode and the crack of the epoxy resin from occurring, and the epoxy resin cast product with high reliability. Is obtained. Therefore, when it is used as a connection part of a power cable, its effect is great.
【表２】 [Table 2]
【図１】本考案のエポキシ樹脂注型品の具体例の上半分
の縦断面図である。FIG. 1 is a vertical cross-sectional view of the upper half of a specific example of an epoxy resin cast product of the present invention.
【図２】本考案のエポキシ樹脂注型品の第２の特徴によ
る埋込み金具の具体例の縦断面図である。FIG. 2 is a vertical cross-sectional view of a concrete example of the embedded metal fitting according to the second feature of the epoxy resin cast product of the present invention.
【図３】本考案のエポキシ樹脂注型品の第３の特徴によ
る埋込み金具の具体例の縦断面図である。FIG. 3 is a vertical cross-sectional view of a concrete example of the embedded metal fitting according to the third feature of the epoxy resin cast product of the present invention.
【図４】従来のエポキシ樹脂注型品の一例の上半分の縦
断面図である。FIG. 4 is a vertical cross-sectional view of the upper half of an example of a conventional epoxy resin cast product.
１ 金属電極 ２ 半導電性ゴム被覆層 ３ 発泡導電性樹脂 ４ 綿状の金属繊維 ５ 発泡半導電性ゴム層 ６ 熱収縮チューブ Ａ エポキシ樹脂 DESCRIPTION OF SYMBOLS 1 Metal electrode 2 Semi-conductive rubber coating layer 3 Foamed conductive resin 4 Cotton-like metal fiber 5 Foamed semi-conductive rubber layer 6 Heat-shrinkable tube A Epoxy resin
Claims (3)
注型品において、金属電極の外側に発泡導電性樹脂を介
して半導電性ゴム被覆層を設けたことを特徴とするエポ
キシ樹脂注型品。1. An epoxy resin casting product having a metal electrode embedded therein, wherein a semi-conductive rubber coating layer is provided on the outside of the metal electrode via a foamed conductive resin. Goods.
注型品において、金属電極の外側に綿状の金属繊維を介
して半導電性ゴム被覆層を設けたことを特徴とするエポ
キシ樹脂注型品。2. An epoxy resin casting product in which a metal electrode is embedded, wherein a semiconductive rubber coating layer is provided on the outside of the metal electrode via cotton-like metal fibers. Mold product.
注型品において、金属電極の表面に発泡導電性ゴム層及
び半導電性熱収縮チューブを順次設けたことを特徴とす
るエポキシ樹脂注型品。3. An epoxy resin casting product in which a metal electrode is embedded, wherein a foamed conductive rubber layer and a semi-conductive heat-shrinkable tube are sequentially provided on the surface of the metal electrode. Goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3865993U JPH073245U (en) | 1993-06-21 | 1993-06-21 | Epoxy resin cast product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3865993U JPH073245U (en) | 1993-06-21 | 1993-06-21 | Epoxy resin cast product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH073245U true JPH073245U (en) | 1995-01-17 |
Family
ID=12531394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3865993U Pending JPH073245U (en) | 1993-06-21 | 1993-06-21 | Epoxy resin cast product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073245U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019193515A (en) * | 2018-04-27 | 2019-10-31 | 昭和電線ケーブルシステム株式会社 | Cable connection part |
| JP2024149719A (en) * | 2021-02-24 | 2024-10-18 | 株式会社プロテリアル | Power Cable Connection Device |
-
1993
- 1993-06-21 JP JP3865993U patent/JPH073245U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019193515A (en) * | 2018-04-27 | 2019-10-31 | 昭和電線ケーブルシステム株式会社 | Cable connection part |
| JP2024149719A (en) * | 2021-02-24 | 2024-10-18 | 株式会社プロテリアル | Power Cable Connection Device |
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