200417568 (1) 玖、發明說明 【發明所屬之技術領域】 本發明係有關高介電率之橡膠組成物及輸電電纜構件 者0 【先前技術】 做爲輸電電纜所被泛用之CV電纜係於其連接部或終 端部以如：內部電極處理部、外部半導電層處理部、應力 濾錐起動部、或、電纜鐵心與連接部品之界面部等，以 絕緣做爲必要個處者，而，藉由橡膠模型嵌裝、膠帶卷繞 ，環氧基注入等作業形成絕緣層，惟，其較少以手動作業者 〇 手動作業所形成之絕緣層於其界面極易伴隨非常大不連 續性之微小突起、異物、點等曲率之特異點，此特異點附近 絕緣層內之電界呈錐度，爲確實防止絕緣破壞，小心經意及 高度的專門技術，導致施工時間及施工成本大增。 此點，電場錐度可藉由提昇絕緣材料之介電率緩和以先 行塡充碳黑等之導電性塡料後，提昇比介電率之橡膠組成 物或丙烯橡膠或氟橡膠等先行高介電率之橡膠組成物用於 絕緣材料者被討論之。 惟，塡充導電性塡料後，形成導電性粒子鏈，且，高 介電率橡膠之聚合物極性大，介電正切變小，導致絕緣破 壞電壓或絕緣抵抗下降，均產生大幅降低絕緣性之問題。 因此，嘗試於橡膠組成物中塡充如：鈦酸鋇、或氧化鈦 -6 - (2)200417568 (1) 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to rubber compositions and transmission cable components with high dielectric constants. [Previous technology] CV cables used as transmission cables are widely used in The connection part or the terminal part includes, for example, an internal electrode processing part, an external semi-conductive layer processing part, a stress filter starting part, or an interface part between a cable core and a connecting part, etc., and, The insulation layer is formed by rubber model installation, tape winding, epoxy injection, etc., but it is less manual operation. The insulation layer formed by manual operation is easily accompanied by very large discontinuities at its interface. The singularity of curvatures such as tiny protrusions, foreign objects, and dots. The electrical boundary in the insulation layer near this singularity is tapered. In order to prevent insulation damage, careful and high-level expertise has led to a large increase in construction time and cost. At this point, the taper of the electric field can be reduced by increasing the dielectric constant of the insulating material. After the conductive material such as carbon black is advanced, the dielectric composition of the rubber composition, acrylic rubber, or fluorine rubber can be increased. The rate of rubber composition for insulation materials is discussed. However, after the conductive material is charged, a conductive particle chain is formed, and the polymer of the high-dielectric rubber has a large polarity and a small dielectric tangent, which results in a decrease in insulation breakdown voltage or insulation resistance, which results in a significant reduction in insulation. Problem. Therefore, try to fill the rubber composition with: barium titanate, or titanium oxide -6-(2)
I (2) I200417568 等比介電率較高之塡料，惟，此時，僅提昇塡料之塡充量 ，提昇橡膠組成物之介電率後則大幅降低絕緣性之問題產 生。 【發明內容】 本發明鑑於上述，而以提供一種高介電率下仍不致大 幅降低絕緣性之高介電率橡膠組成物及輸電電纜構件做爲 該課題者。 該課題係藉由申請項1〜6所載之本發明而解決者。 申請項1之發明係以含有準備由橡膠系聚合物所成之基 材步驟與室溫〜90 °C之溫度範圍下，準備由比介電率爲2000 以上之鈦酸鋇系材料之粉末所成塡充材料之步驟，以及塡充 該塡充材料於該基材後，生成比介電率1 0以上之高介電率 橡膠組成物之步驟的流程所生成者爲其特徵之高介電率橡 膠組成物者。 申請項2之發明係如申請項1之高介電率橡膠組成物者 ，其特徵係該橡膠組成物之比介電率爲1 5以上者。 申請項3之發明係如申請項2之高介電率橡膠組成物者 ，其特徵係該橡膠組成物之比介電率爲2〇以上者。 申請項4之發明係如申請項1之高介電率橡膠組成物者 ’其特徵係該準備該塡充材料之步驟爲含有使該鈦酸鋇系材 料之居里溫度藉由添加轉移劑進行位移之步驟以及，以脫離 子水洗淨該欽酸鋇系之材料後，去除離子性不純物之步驟者 (3) (3)200417568 申請項5之發明係如申§靑項1之筒介電率橡膠組成物者 ，其特徵係該流程更含有藉由過氧化物交聯該橡膠組成物 內橡膠系聚合物之步驟，以及熱處理該橡膠組成物後藉由 該交聯後去除所產生該過氧化物之分解殘渣步驟者。 申請項6之發明其特徵係由申請項1〜5中任一項之高介 電率橡膠組成物所成之輸電電纜構件者。 【實施方式】 以下，進行本發明實施形態之詳細說明。 圖1係代表本發明實施形態一群高介電率（比介電率 1 〇以上）之橡膠組成物MX的生成步驟與一部份內包此步 驟PR之輸電電纜匣式電極層RE之製造步驟MF者。 本貫&£例之尚介電率橡膠組成物MX係後述未硫化狀 態之高介電率橡膠材料MX:(以下亦稱「未硫化橡膠材料 」° )與熱處理前之高介電率硫化橡膠材料ΜΧ2 (以下亦 稱「硫化橡膠材料」。）以及熱處理後之高介電率硫化橡 膠材料MX3 (以下亦稱「熱處理橡膠材料」。）之總稱者 。又，本實施例之匣式電極層RE具有相同於後述實施例所 不之內部半導電橡膠層sc與高介電率橡膠層Hp之組合構成 及形狀。又’以下說明中，即使相同高介電率，其視爲化 學性組成物MX時，與視爲電極層RE之製造經過品時之命名 不同。 該高介電率橡膠組成物MX之生產步驟PR係由準備橡 膠組成物MX之基材M1〇 = {M1〇，：卜(自然數）}之步驟 -8 - (4) i (4) i200417568 PR1與準備塡充於該基材M10之塡充材料Mll = {Mll“k=l〜k ( 自然數）丨之步驟PR2，以及於基材M10中添加添加劑 Ml2={M12":n=l〜N (自然數）、m= 1〜Μ (自然數）丨後塡充塡 充材料11後，更附加硫化劑1^13={1^13^=1〜？（自然數）}後 生成未硫化橡膠材料MX 1之步驟PR3、及加入該未硫化橡膠 材料MX1後，生成熱處理橡膠材料MX3之熱處理PR5所成者 〇 另外，電極層RE之製造步驟MF係進行以該未硫化橡膠 材料MX1之一形態高介電率橡膠基材M22做成成型材料之高 介電率橡膠層HP之成型，再分開進行另行準備之半導電橡 膠基材MSO做成成型材料之半導電橡膠層SC之成型漸次成型 步驟MF1與高介電率橡膠層HP之成型及半導電橡膠層SC之 成型同時進行之一體成型步驟MF2者。因此，漸次成型步驟 MF1、一體成型步驟MF2均內包橡膠組成物生成步驟PR之硫 化處理PR4與熱處理PR5者。 準備該基材M10之步驟PR1時，選自直接使一群橡膠系 聚合物基材M01 = {M0h:i=l〜I (自然數）中一種基材m01，( 本實施例中i=l)做爲基材M10之選擇步驟S00、以及二種以 上基材M01混合後取得基材M10之混合步驟S01含有之。 該橡膠系聚合物基材Μ 0 1係使乙烯丙烯橡膠聚合物 （ i=l)、聚矽氧橡膠聚合物（i = 2) 、丁基橡膠聚合物（i = 3) 等非交聯橡膠系聚合物於螺旋狀、塊狀、顆粒狀、或粉末狀 中進行處理之基材者。 準備該塡充材料Μ 11之步驟PR2係含有使氧化鈦結晶粉 (5) (5)200417568 末所成之氧化鈦基材Μ 0 2溶解於碳酸鋇結晶粉末所成之碳酸 鋇基材Μ03水溶液後，取得介電率高的鈦酸鋇結晶之溶解步 驟S04、此步驟S04所取得鈦酸鋇結晶所成之材料；βΤ1中添加 緦系（亦即SrTiCh之構成元素）之位移成銷系（亦即ZrTiCh 之構成兀素）之位移等轉移劑M a後，欽酸鋇結晶由強介電 性往常介電性轉移之居里溫度（最高1 2 (TC左右）之變更 後，取得最大介電率位移至室溫附近之工業用級高介電 率鈦酸鋇系材料BT2之位移步驟S08，以及該溶解步驟S04取 得之鈦酸鋇結晶所成之材料BT1，或該位移步驟S08取得之 鈦酸鋇系材料BT2塡充於粉末後，取得塡充材料M1U (k=l或 k = 2,本實施例爲後者）之粉末化步驟S05者。 又，該粉末化步驟S05之後，該取得之鈦酸鋇系材料 B T 1、B T 2之粉末更以結合材料M b固化成型後進行锻燒之锻 燒步驟S06與此煅燒步驟S06取得之锻燒物經粉碎後藉由微粒 化後以鈦酸鋇系之材料BT3，BT4之粉末做爲塡充材料M1U (k=3或k = 4)取得粉碎步驟S07之過程者宜。又，以脫離子水 MC洗淨此粉碎步驟S07取得之鈦酸鋇系材料BT4之粉末後， 去除離子性不純物後，以鈦酸鋇系材料BT5之粉末做爲塡充 材料Milk (k=5 [ = K])取得洗淨步驟S09之過程者爲更佳者 ，本實施例係依此方式者。 生成該未硫化橡膠材料MX 1之步驟PR3係含有步驟PR 1所 準備之基材M10所需量（此爲100重量份者’以下相同。） 中將步驟PR2所準備之塡充材料Ml 1以適量（依塡充材料Ml 1 之介電率及橡膠組成物MX之所期待特性不同而異，而本實 -10- (6) (6)200417568 施例爲3 0 0〜7 5 0重量份者）進行塡充後，更加入添加劑Μ 1 2 ’以較高溫度進行混煉後，生成硫化劑未添加狀態之混煉橡 膠材料Μ20之高溫混煉步驟S 1 0與於該混煉橡膠材料Μ20中加 入硫化劑Μ 1 3後，於較低溫度下進行混煉後生成未硫化狀態 之混煉橡膠材料M2 1之低溫混煉步驟S 11以及以所定網篩過 濾該混煉橡膠材料Μ21後去除異物之後取得未硫化狀態之高 介電率橡膠基材Μ22之過濾步驟。 該添加劑Ml 2= {Ml 2n.m丨中有爲調整高介電率橡膠基材 M22之機械特性的添加劑（n=l)，爲調整電氣特性之添加 劑 （n = 2)、以及爲調整化學特性之添加劑 （n = 3)者，依 其橡膠基材M22所期待特性決定選取劑種及混合量。機械特 性調整用添加劑{ΜΙ 2κ“中含有軟化劑（如：San per油[商 品名]等工程油）M12U、補強劑（如：粘土等無機塡料） Μ 1 2 ! .2、潤滑劑（如：石蠟、硬脂酸）Μ 1 2ι .3、張力特性提昇 劑（如：aerozil [商品名]等二氧化矽或白碳黑）Μ 1 2 i .4者 ’電氣特性調整用添加劑{M122.m}中含有安定劑（如：介電 正切提昇用紅丹塗漿）Ml 22.1者、化學特性調整用添加劑 {M129.m}中含有抗老化劑（如：n〇Clak [商品名]等苯酚系抗 氧化劑）Μ 1 2 9.1者。 該硫化劑{Μ13ρ}中，含有 DCP ( dicumylperoxide )等 之過氧化物交聯劑Μ 1 3!及硫黃Μ 1 3 2。 該製造步驟MF之漸次成型步驟MF1與一體成型步驟MF2 兩者均使高介電率橡膠基材Μ22進行滾壓後切取所定尺寸後 ，製造局介電率橡膠薄片Μ23之高介電率橡膠薄片製造步 -11 - (7) i » 200417568 驟s 1 3，以及與此S 1 3平行後分別使所期待特性之半導電橡膠 基材M42，M5 2進行滾壓後切取所定尺寸後由製造所對應之 半導電橡膠薄片M43、M53之半導電橡膠薄片製造步驟S43、 S53開始。 漸次成型步驟MF1係含有將高介電率橡膠薄片M23裝置 於高介電率橡膠層HP之模具後，高溫下加熱硫化成型後， 製造高介電率橡膠成型品M30之成型步驟S20、與適溫下加 熱處理其高介電率橡膠成型品M3 0後去除該過氧化物交聯劑 M13之硫化後的分解殘渣後，更乾燥橡膠成型品M30後，取 得熱處理之高介電率橡膠成型品M3 1 (亦即高介電率橡膠層 HP)之加熱步驟S21，以及，再將該橡膠成型品M31與半導 電橡膠薄片M43裝置於半導電橡膠層SC之模具後，進行加熱 成型後製造高介電率橡膠層HP與半導電橡膠成型品M44 (亦 即導電橡膠層SC)相互之組合M45 (即橡膠電極層RE)之成 型步驟S44者。 一體成型步驟MF2係含有裝置高介電率橡膠薄片M23與 半導電橡膠薄片M5 3於橡膠電極層RE之模具後，高溫下加熱 後硫化成型之後製造高介電率橡膠成型品M60 (對應M30) 與其M60呈一體之半導電橡膠成型品M62 (即半導電橡膠層 SC)相互組合之橡膠電極層成型品M64之成型步驟S30、以 及適溫下加熱該橡膠成型品M64後，由橡膠成型品M60之部 份去除該過氧化物交聯劑Μ 1 3硫化後之分解殘渣，更乾燥橡 膠成型品Μ64後，製造被熱處理之高介電率橡膠成型品Μ61 (即高介電率橡膠層HP)與做爲該半導電橡膠層SC之半導電 -12- (8) (8)200417568 橡膠成型品M62組合而成之電極層成型品M65 (亦即，橡膠 電極層RE)之加熱步驟S31者。 該高介電率橡膠組成物生成步驟之未硫化橡膠材料之 硫化處理PR4係內包該製造步驟MF之成型步驟S20，S30，且 ，生成步驟PR之硫化橡膠材料之熱處堙PR5爲內包製造步驟 MF之加熱步驟S21，S31者。加熱步驟S21、S31於乾燥空氣 中，或必要時於氮等不活性氣體中，使成型品M30，M60以 6〜24小時、於100〜140°C下進行加熱之。 以上，橡膠組成物M20〜M23係含於該未硫化橡膠材料 MX1者，橡膠組成物M30、M60含於該硫化橡膠材料MX2者 、橡膠組成物M31、M61含於該熱處理橡膠材料MX3者。 以所定寬度及長度切取該高介電率橡膠薄片M23，附與 適當粘著性後，製造手卷絕緣用橡膠螺旋或膠帶等亦可，或 以該高介電率橡膠基材M22做成凝膠狀絕緣用基材之使用亦 可° 半導電橡膠基材M42、M52亦可於該基材M10中添加添 加劑Ml 2及硫化劑Ml 3後，塡充碳黑後生成者。 輸電電纜構件考量其張力強度、延伸、永久壓縮變形等 機械性特性、加工性、價格等，以過氧化二異丙苯等過氧化 物聚合物交聯後之高介電率橡膠組成物所構成者宜，特別 以過氧化物交聯乙烯丙烯橡膠（EPDM)者爲更佳。 塡充材料Μ 1 1於輸電電纜之使用溫度域之室溫（約25 t )至90t之溫度範圍下，其比介電率爲2，000以上者宜， 較佳者爲2，000〜20，000者、粒徑爲1〜ΙΟμιη之鈦酸鋇系材料 -13- (9) (9)200417568 粉末者宜。 塡充材Mil之比介電率不足2，000時，相較於2000以上 者，則對於基材M10之塡充量增加，取得高介電率橡膠組成 物MX之介電正切 （tan 5)、絕緣破壞電壓 （BDV)、絕緣 抵抗（P )等電氣特性均降低。 鈦酸鋇系材料可以各種級數生成之，而以添加緦系、鉻 系等轉移劑後提高介電率之工業用級數之材料BT2，BT4， BT5者爲較佳者。 此等工業用級數之材料BT2，BT4，BT5中，未經洗淨步 驟S09之BT2，BT4含離子性不純物。 此離子性不純物會降低高介電率橡膠組成物MX輸電 電纜所使用含商用數周波數之低周波域的電氣特性（tan 5 、BDV p )。 因此，以經過脫離子水Md去除離子性不純物之洗淨步 驟S09所製造之鈦酸鋇系材料BT5之粉末M1U (k=5)用於塡 充材料者宜。洗淨步驟S09中，使脫離子水中之基材進行超 音波洗淨者佳。 塡充材料Mil之塡充量分別爲100重量份基材M10之300 重量％份以上（較佳爲400重量份以上）、400重量份（較佳 爲500重量份以上）、或500重量份以上（較佳爲600重量份 以上）後，可使高介電率橡膠組成物MX之比介電率做成1 0 以上、15以上、或20以上者。當塡充材料Mil之塡充量不足 300重量份時，則橡膠組成物MX之介電率將不足。反之， 塡充材料Mil之塡充量超出400重量份時，特別是超出500重 -14- (10) (10)200417568 量份時，則務必考量降低橡膠組成物MX之介電正切、絕緣 破壞電壓、絕緣抵抗等之絕緣特性及其平衡。 此點，本發明者藉由實驗證實過氧化物交聯之組成物 X含多量工業用級之鈦酸鋇系材料BT2、BT4時絕緣特性之 降低係起因於該材料BT2，BT4所附著之離子性不純物導電 作用後，且，該離子性不純物與交聯之橡膠組成物MX中亦 起因於之後所殘留交聯劑Μ 1 3之分解殘渣（如：過氧化二異 丙苯交聯後所殘留之苯乙酮與枯醇）相互複合作用後產生 界面分極者。 此欲平衡高介電率橡膠組成物MX之介電率與絕緣特性 時，以藉由該洗淨步驟S09去除離子性不純物之鈦酸鋇系材 料BT5之粉末M1U (k = 5)做爲塡充材料使用者可提昇橡膠組 成物MX之介電率爲理想者，且，藉由該加熱步驟S21、S3 1 去除交聯劑之分解殘渣者爲更理想。 圖2係代表以乙烯丙烯橡膠聚合物MOl· (i=l).做爲基劑 之高介電率橡膠組成物MX之具體例NO· 1〜N0.7、及其電氣 特性試驗結果之一覽表（表1)。 該高介電率橡膠組成物例NO. 1〜Ν〇·7係於1〇〇重量份基 材Μ 1 0!中，添加含有工程油及抗氧化劑之添加劑Μ丨2與4重 量份之過氧化二異內苯（交聯劑）Μ 1 3後，以下所示3計（A ’ B，C)之任意鈦酸鋇系材料之粉末Μ 11塡入3 〇 〇重量份 (NO.3) 、450重量份（N0.2) 、500重量份（Ν〇·4) 、650重 量份（Ν0.1)、或750重量％份（NO .5〜NO .7)後被生成之。 粉末A:BT3 3 5 (商品名）富士鈦工業製、 -15- (11) (11)200417568 比介電率1600 (室溫〜90°C ) 粉末B:BT3 25 (商品名）富士鈦工業製、 比介電率4〇〇〇 (室溫〜90°C ) 粉末C:BT206 (商品名）富士鈦工業製、 比介電率16500 (室溫） 3 000 ( 9 0 °C ) 高介電率橡膠組成物例如NO.6及N0.7中，藉由加熱步 驟S21、S3 1 (120°C、12小時）去除交聯劑Ml 3之分解殘渣。 又，高介電率橡膠組成物例N0.7中，利用脫離子水Md之洗 淨步驟洗淨塡充材料Mil (粉末C)後，進行乾燥之。 各例N0.1〜N0.7於未硫化橡膠材料MX1之生成步驟PR3 中均使取得高介電率橡膠基材M22呈厚度2mm之平薄片形狀 進行成型•硫化後製成試料，測定該比介電率、介電正切 及絕緣抵抗。更作成附與有效部厚度爲0.5mm凹埋部之薄片 形狀試料，測定絕緣破壞電壓。 介電率及介電正切係以50Hz、ΙΚν之條件下進行測定者 、絕緣抵抗係以直流500v之條件下測定1分値者，絕緣破壞 電壓係以50Hz、2kV/5分之階段昇壓下進行測定者。 本發明之輸電電纜構件係利用該高介電率橡膠組成物 MX，特別是高介電率橡膠基材M22所構成者。亦即，使手 卷用基材或成型用基材之未硫化橡膠材料MX1，或其半導電 橡膠基材M42、M5 2相互漸次或一體成型品伴隨輸電電纜之 連接等終端處理時，於電極絕緣，應力濾錐作用、界面形成 -16- (12) 200417568 等目的下，做成1mm〜5mm或更厚之厚度電界緩和層配設之 〇 此輸電電纜構件具比介電率1 〇以上、1 5以上或20以上 之高介電率，且，無降低介電正切，絕緣破壞電壓、絕緣 抵抗等電氣特性。 因此，輸電電纜之終端處理時即使產生突起、異物、 點等特異點，仍可使其周圍電場錐度以該電纜構件有效緩和 之，防止放電等不當之產生。爲此輸電電纜之連接作業無須 高度熟化、作業不煩雜。 圖3代表本發明1實施形態之含絕緣構件之輸電電纜連接 構造CN1。 此連接構造CN1係電氣連接左右輸電電纜PCI、PC2剝出 之導體蕊2.2間之蕊線連接部10與電氣連接輸電電纜PC 1、 PC2剝出：遮掩濾網6.6間之遮掩連接部SH以及塡充於此等蕊 線連接部10及遮掩連接部SH間之輸電電纜PCI、PC2剝出之 絕緣用交聯塑料絕緣體5，5進行形狀整合之絕緣連接部14以 及呈水密嵌入輸電電纜PC 1，PC2之外被覆7，7後被覆遮掩 連接部SH之外圍的2個鑲嵌模保護體15所構成者。 該蕊線連接部1 0係嵌入各導體蕊2，2端部之筒狀導體8 與卷曲此筒狀導體8及各導體蕊2，2殘餘部位之導電性膠帶 之卷層9以及位於該絕緣連接部1 4之內環中央部膠帶卷層9及 各電纜絕緣體5，5端部呈形狀整合之輕薄圓筒狀橡膠電極1 1 所構成者。 遮掩連接部SH係電氣連接於位置絕緣連接部14內環左I (2) I200417568 and other materials with higher specific permittivity. However, at this time, only increasing the charge of the material and increasing the permittivity of the rubber composition caused a significant decrease in insulation. [Summary of the Invention] In view of the above, the present invention is to provide a high-dielectric-ratio rubber composition and a transmission cable member that do not significantly reduce insulation properties even at high dielectric constants. This problem is solved by the present invention described in applications 1 to 6. The invention of claim 1 is prepared by using a step of preparing a base material made of a rubber-based polymer and a temperature range from room temperature to 90 ° C, and preparing a powder made of barium titanate-based material having a specific permittivity of 2,000 or more. The steps of the step of filling the material and the step of forming the high-permittivity rubber composition with a specific permittivity of 10 or more after the filling of the filling material on the substrate are characterized by a high dielectric constant. Rubber composition. The invention of application item 2 is the high-dielectric-ratio rubber composition of application item 1, and is characterized in that the specific permittivity of the rubber composition is 15 or more. The invention of application item 3 is the high-dielectric-ratio rubber composition of application item 2, and is characterized in that the specific permittivity of the rubber composition is 20 or more. The invention of application item 4 is the high-dielectric-ratio rubber composition of application item 1, and the feature is that the step of preparing the filling material is to include the Curie temperature of the barium titanate-based material by adding a transfer agent. Steps of displacement and steps of removing ionic impurities after the barium acetate-based material is washed with deionized water (3) (3) 200417568 The invention of the item 5 of the application is the tube dielectric of the §1 item of the application Those who have a rubber composition are characterized in that the process further includes a step of crosslinking the rubber-based polymer in the rubber composition with a peroxide, and heat-treating the rubber composition by removing the polymer after the crosslinking. Residue step of oxide decomposition. The invention of claim 6 is characterized in that it is a transmission cable member made of the high-permittivity rubber composition of any one of claims 1 to 5. [Embodiment] Hereinafter, the embodiment of the present invention will be described in detail. FIG. 1 represents the generation steps of a group of rubber compositions MX with a high dielectric constant (specific dielectric constant above 10) according to the embodiment of the present invention, and a part of the manufacturing steps of a transmission cable box electrode layer RE including PR in this step. MF person. In this example, the dielectric constant rubber composition MX is an uncured high-k dielectric rubber material MX (hereinafter also referred to as "uncured rubber material") and the high-k dielectric rubber material before heat treatment. MX2 (hereinafter also referred to as "vulcanized rubber material") and the high dielectric constant vulcanized rubber material MX3 (hereinafter also referred to as "heat-treated rubber material") after heat treatment. In addition, the cassette electrode layer RE of this embodiment has the same composition and shape as the combination of the internal semiconductive rubber layer sc and the high-dielectric-constant rubber layer Hp, which are different from those of the embodiment described later. In the following description, even when the dielectric constant is the same as the high-dielectric constant, the name is different from the case when it is regarded as a chemical composition MX when it is regarded as a manufactured product of the electrode layer RE. The production step PR of the high-permittivity rubber composition MX is a step of preparing the base material M1〇 of the rubber composition MX = {M1〇 ,: Bu (natural number)}-8-(4) i (4) i200417568 PR1 and the filling material Mll to be filled in the base material M10 = {Mll "k = l ~ k (natural number) step PR2, and the additive Ml2 is added to the base material M10 = {M12 ": n = l ~ N (Natural number), m = 1 ~ M (Natural number) 丨 After filling the filling material 11 with vulcanizing agent 1 ^ 13 = {1 ^ 13 ^ = 1 ~? (Natural number)} The step PR3 of the unvulcanized rubber material MX1 and the heat treatment PR5 of the heat-treated rubber material MX3 after adding the unvulcanized rubber material MX1. In addition, the manufacturing step MF of the electrode layer RE is performed in one form of the unvulcanized rubber material MX1. The high-k dielectric rubber substrate M22 is used to form the high-k dielectric rubber layer HP of the molding material, and the separately prepared semi-conductive rubber substrate MSO is used to form the semi-conductive rubber layer SC of the molding material. MF1 and the high-k dielectric rubber layer HP and the semi-conductive rubber layer SC are simultaneously formed in one body MF2. Therefore, the progressive molding step MF1 and the integral molding step MF2 include the vulcanization treatment PR4 and the heat treatment PR5 of the rubber composition generation step PR. When preparing the step PR1 of the substrate M10, it is selected from a group of directly polymerized rubber groups Substrate M01 = {M0h: i = l ~ I (natural number) one substrate m01, (i = 1 in this embodiment) as the selection step S00 of the substrate M10, and two or more substrates M01 are mixed The base material M10 is included in the mixing step S01. The rubber-based polymer base material M 0 1 is made of an ethylene propylene rubber polymer (i = 1), a silicone rubber polymer (i = 2), and a butyl rubber. Non-crosslinked rubber-based polymers such as polymers (i = 3) are processed in a spiral, block, granular, or powder form. The step PR2 of preparing the filling material M 11 contains oxidation Titanium crystal powder (5) (5) 200417568 The titanium oxide substrate M 0 2 formed at the end is dissolved in a barium carbonate substrate M03 aqueous solution made of barium carbonate crystal powder, and then the barium titanate crystal with high dielectric constant is dissolved. Step S04, the material formed by the barium titanate crystal obtained in this step S04; adding actinide to βΤ1 (That is, the constituent elements of SrTiCh) after the displacement into the pin system (that is, the constituent elements of ZrTiCh) and other transfer agents M a, the Curie temperature of the barium acetate crystal transfer from ferroelectric to normal dielectric ( After the change of up to 1 2 (about TC), the displacement step S08 of the industrial grade high-dielectric barium titanate-based material BT2 with the maximum dielectric shift to near room temperature, and the barium titanate obtained in the dissolution step S04 BT1, which is the material formed by crystallization, or the barium titanate-based material BT2 obtained in the displacement step S08, is powdered, and then the powdering step of obtaining the filling material M1U (k = 1 or k = 2 in this embodiment) is obtained. S05. In addition, after the powdering step S05, the obtained powders of the barium titanate-based materials BT 1, BT 2 are further solidified by the bonding material M b and then calcined in the calcination step S06 and the calcination obtained in the calcination step S06. After the material is pulverized, it is preferable to obtain the process of pulverization step S07 by using the powder of barium titanate-based materials BT3 and BT4 as the filling material M1U (k = 3 or k = 4) after being pulverized. In addition, the powder of barium titanate-based material BT4 obtained in this pulverizing step S07 was washed with deionized water MC, and after removing ionic impurities, the powder of barium titanate-based material BT5 was used as the filling material Milk (k = 5 [= K]) The process of obtaining the washing step S09 is better, and this embodiment is in this way. The step PR3 for generating the unvulcanized rubber material MX 1 contains the required amount of the base material M10 prepared in step PR 1 (this is 100 parts by weight, the same applies hereinafter). The filling material Ml 1 prepared in step PR 2 is used in an appropriate amount. (Depending on the dielectric constant of the filling material Ml 1 and the expected characteristics of the rubber composition MX, the actual -10- (6) (6) 200417568 example is 3 0 0 to 7 50 parts by weight ) After the filling, the additive M 1 2 ′ is further added, and after kneading at a higher temperature, the high temperature kneading step S 1 0 of the kneaded rubber material M20 in a state where the vulcanizing agent is not added is added to the kneaded rubber material M20 After adding the vulcanizing agent M 1 3 to the mixture, the low temperature kneading step S 11 of the unvulcanized rubber material M 2 1 after kneading at a lower temperature and filtering the kneaded rubber material M 21 with a predetermined mesh screen are removed. After the foreign matter, a filtering step of obtaining an unvulcanized high-k dielectric rubber substrate M22. The additive Ml 2 = {Ml 2n.m 丨 includes additives for adjusting the mechanical properties of the high dielectric rubber base material M22 (n = l), additives for adjusting the electrical characteristics (n = 2), and adjusting chemicals The characteristics of the additives (n = 3), according to the expected characteristics of the rubber substrate M22 determine the selection of the type and mixing amount. Additives for adjusting mechanical properties {ΜΙ 2κ "contain softeners (such as engineering oils such as San per oil [trade name]) M12U, reinforcing agents (such as inorganic materials such as clay) Μ 1 2! .2, lubricants ( Such as: paraffin wax, stearic acid) M 1 2ι .3, tension characteristics improver (such as: aerozil [commercial name] silicon dioxide or white carbon black) M 1 2 i. 4 'Electrical property adjustment additives {M122 .m} contains stabilizers (such as: Red Dan paste for dielectric tangent improvement) Ml 22.1, chemical properties adjustment additive {M129.m} contains anti-aging agents (such as: phenol such as n〇Clak [trade name]) It is an antioxidant) M 1 2 9.1. The vulcanizing agent {M13ρ} contains a peroxide crosslinking agent M 1 3! Such as DCP (dicumylperoxide) and sulfur yellow M 1 32. The MF is gradually formed in this manufacturing step. Step MF1 and integral molding step MF2 both roll the high-k dielectric rubber substrate M22 and cut out a predetermined size, and then manufacture the high-k dielectric rubber sheet M23 of the local-k dielectric rubber sheet M23-(7 ) i »200417568 step s 1 3, and parallel to this S 1 3 respectively make semi-conducting the desired characteristics The rubber substrates M42 and M5 2 are rolled and cut to a predetermined size, and then the manufacturing steps S43 and S53 of the semiconductive rubber sheets M43 and M53 are manufactured. The step MF1 contains a high dielectric constant. The rubber sheet M23 is installed in the mold of the high-permittivity rubber layer HP, and is heated and vulcanized at a high temperature to form a high-permittivity rubber molded product M30. Step S20, and heat-treating the high-permittivity rubber at a suitable temperature to mold After the product M3 0 is removed, the decomposition residues of the peroxide crosslinking agent M13 after vulcanization are removed, and after the rubber molded product M30 is dried, the heat-treated high-permittivity rubber molded product M3 1 (that is, the high-permittivity rubber layer) is obtained. HP) heating step S21, and then the rubber molded product M31 and the semi-conductive rubber sheet M43 are installed in a mold of the semi-conductive rubber layer SC, and then heat-molded to manufacture a high-permittivity rubber layer HP and a semi-conductive rubber. Product M44 (that is, the conductive rubber layer SC) is a combination step S44 of the combination M45 (that is, the rubber electrode layer RE). The integral molding step MF2 is a device containing a high-permittivity rubber sheet M23 and a thin semiconductive rubber. M5 3 is made of the rubber electrode layer RE, and then vulcanized after heating at high temperature to produce a high-conductivity rubber molded product M60 (corresponding to M30). The semi-conductive rubber molded product M62 (that is, the semi-conductive rubber layer SC) integrated with its M60. The molding step S30 of the rubber electrode layer molded product M64 combined with each other, and after the rubber molded product M64 is heated at a suitable temperature, the peroxide molding agent M 1 3 is removed from the rubber molded product M60 to decompose the residue after vulcanization. After drying the rubber molded product M64, the heat-treated high dielectric rubber molded product M61 (ie, the high dielectric rubber layer HP) and the semiconductive -12- (8) ( 8) The heating step S31 of the electrode layer molded product M65 (that is, the rubber electrode layer RE) formed by combining the 200417568 rubber molded product M62. The vulcanization treatment of the unvulcanized rubber material in the step of generating the high-permittivity rubber composition includes the molding steps S20 and S30 of the manufacturing step MF, and the heat treatment of the vulcanized rubber material in the generating step PR 堙 PR5 is the manufacturing step of the inner packaging. MF heating steps S21, S31. In the heating steps S21 and S31, the molded products M30 and M60 are heated in dry air or, if necessary, inert gas such as nitrogen, for 6 to 24 hours at 100 to 140 ° C. Above, the rubber compositions M20 to M23 are contained in the unvulcanized rubber material MX1, the rubber compositions M30 and M60 are contained in the vulcanized rubber material MX2, and the rubber compositions M31 and M61 are contained in the heat-treated rubber material MX3. The high-dielectric rubber sheet M23 is cut with a predetermined width and length, and with appropriate adhesiveness, it is also possible to manufacture rubber spirals or tapes for hand-rolled insulation, or use the high-dielectric rubber substrate M22 to make a gel. The semi-conductive rubber substrates M42 and M52 can also be used as the substrate for insulation. The additives Ml 2 and vulcanizing agent Ml 3 can be added to the substrate M10, and then the carbon black can be generated. Transmission cable members are made of a high-permittivity rubber composition after cross-linking a peroxide polymer such as dicumyl peroxide, considering mechanical properties such as tensile strength, elongation, and permanent compressive deformation, processability, and price. It is preferable to use a peroxide-crosslinked ethylene propylene rubber (EPDM). The filling material M 1 1 is in a temperature range from room temperature (about 25 t) to 90 t of the use temperature range of the power transmission cable, and its specific permittivity is more than 2,000, more preferably 2,000 to 20 10,000, barium titanate-based material with a particle size of 1 to 10 μιη-13- (9) (9) 200417568 powder is preferred. When the specific permittivity of the rhenium filling material Mil is less than 2,000, compared to those with more than 2,000, the rhenium charge for the substrate M10 increases, and the dielectric tangent of the high-permittivity rubber composition MX is obtained (tan 5) , Insulation breakdown voltage (BDV), insulation resistance (P) and other electrical characteristics are reduced. Barium titanate-based materials can be produced in various grades, and materials of industrial grades BT2, BT4, and BT5 that increase the dielectric constant after adding a transfer agent such as a samarium-based or chromium-based materials are preferred. Among these industrial grade materials BT2, BT4, and BT5, BT2 and BT4 without washing step S09 contain ionic impurities. This ionic impurity will reduce the electrical characteristics (tan 5, BDV p) of the low-frequency range of the commercial frequency used in the high-permittivity rubber composition MX transmission cable. Therefore, the powder M1U (k = 5) of the barium titanate-based material BT5 produced by the washing step S09 after removing the ionic impurities with deionized water Md is suitable for filling the material. In the cleaning step S09, it is preferable to subject the substrate in the deionized water to ultrasonic cleaning. The filling amount of the filling material Mil is 300 parts by weight or more (preferably 400 parts by weight or more), 400 parts by weight (preferably 500 parts by weight or more), or 500 parts by weight or more of 100 parts by weight of the substrate M10. (Preferably 600 parts by weight or more), the specific permittivity of the high-permittivity rubber composition MX can be made 10 or more, 15 or more, or 20 or more. When the filling amount of the filling material Mil is less than 300 parts by weight, the dielectric constant of the rubber composition MX will be insufficient. Conversely, when the filling amount of the filling material Mil exceeds 400 parts by weight, especially when it exceeds 500 parts by weight -14- (10) (10) 200417568, it is necessary to consider reducing the dielectric tangent and insulation damage of the rubber composition MX Insulation characteristics and balance of voltage, insulation resistance, etc. At this point, the inventors have confirmed through experiments that the composition X of peroxide cross-linking contains a large amount of industrial grade barium titanate-based materials BT2 and BT4. The decrease in insulation characteristics is due to the ions attached to the materials BT2 and BT4. After the conductive impurities are conductive, the ionic impurities and the crosslinked rubber composition MX are also caused by the decomposition residues of the remaining crosslinking agent M 1 3 (such as residuals after cross-linking dicumyl peroxide). (Acetophenone and cumyl alcohol) interact with each other to produce interface polarization. In order to balance the dielectric constant and insulation characteristics of the high-dielectric rubber composition MX, the powder M1U (k = 5) of the barium titanate-based material BT5, which removes ionic impurities by the cleaning step S09, is used as 塡The user of the charging material can increase the dielectric ratio of the rubber composition MX to be ideal, and it is more preferable to remove the decomposition residue of the crosslinking agent by the heating steps S21 and S3 1. Fig. 2 is a list of specific examples of high dielectric constant rubber composition MX using ethylene propylene rubber polymer MOl · (i = l) as a base, No. 1 to N0.7, and a list of test results of its electrical characteristics (Table 1). This high-dielectric-rate rubber composition example No. 1 to No. 7 is added to 100 parts by weight of the substrate M 1 0 !, and additives including engineering oil and antioxidant M 2 and 4 parts by weight are added. After oxidizing diisolactone (crosslinking agent) M 1 3, the powder M 11 of any barium titanate-based material (A ′ B, C) of 3 (A ′ B, C) shown below is filled with 3,000 parts by weight (NO. 3) , 450 parts by weight (N0.2), 500 parts by weight (NO.4), 650 parts by weight (N0.1), or 750 parts by weight (NO.5 to NO.7) are generated. Powder A: BT3 3 5 (trade name) manufactured by Fuji Titanium Industries, -15- (11) (11) 200417568 Specific permittivity 1600 (room temperature to 90 ° C) Powder B: BT3 25 (trade name) Fuji Titanium Industries Production, specific permittivity 4000 (room temperature to 90 ° C) powder C: BT206 (trade name) manufactured by Fuji Titanium Industrial, specific permittivity 16500 (room temperature) 3 000 (90 ° C) high dielectric In the resistivity rubber composition such as NO. 6 and N0.7, the decomposition residues of the cross-linking agent Ml 3 are removed by heating steps S21 and S3 1 (120 ° C, 12 hours). Furthermore, in the high-dielectric-constant rubber composition example N0.7, the filling material Mil (powder C) was washed in the washing step of deionized water Md, and then dried. In each example, N0.1 to N0.7 were used to form the uncured rubber material MX1 in the production step PR3. The obtained high dielectric constant rubber substrate M22 was formed into a flat sheet shape with a thickness of 2 mm, and the sample was formed after vulcanization. Permittivity, dielectric tangent and insulation resistance. A sheet-shaped sample with a recessed portion having an effective portion thickness of 0.5 mm was prepared, and the dielectric breakdown voltage was measured. The dielectric constant and the dielectric tangent are measured under the conditions of 50Hz and 1Kv, the insulation resistance is measured under the condition of DC 500v for 1 minute, and the dielectric breakdown voltage is increased under the step of 50Hz and 2kV / 5 minutes. Tester. The power transmission cable member of the present invention is constituted by using the high-k dielectric rubber composition MX, particularly the high-k dielectric rubber substrate M22. That is, when the uncured rubber material MX1 of the base material for hand rolling or the base material for molding, or its semi-conductive rubber base materials M42, M5 2 are gradually or integrally formed with each other, and terminal processing such as connection of a power transmission cable is performed, the electrodes are insulated. Stress filter action, interface formation -16- (12) 200417568 and other purposes, the thickness of 1mm ~ 5mm or thicker electrical interface relaxation layer is provided. This transmission cable member has a specific permittivity of 10 or more, 1 5 High dielectric constant above or above 20, and without reducing electrical tangent, dielectric breakdown voltage, insulation resistance and other electrical characteristics. Therefore, even if special points such as protrusions, foreign objects, and dots are generated during the terminal treatment of the transmission cable, the taper of the surrounding electric field can be effectively mitigated by the cable member to prevent improper discharge and the like. For this reason, the connection operation of the transmission cable does not need to be highly matured and the operation is not complicated. Fig. 3 shows a connection structure CN1 of a power transmission cable including an insulating member according to the first embodiment of the present invention. This connection structure CN1 is an electrical connection between the left and right transmission cables PCI and PC2, and the core connection section 10 between the conductor core 2.2 and the electrical connection transmission cable PC 1, PC2 are peeled off: the shield connection section SH and the shield connection 6.6 The insulated cross-linked plastic insulators 5 and 5 of the power transmission cable PCI and PC2 stripped between these core wire connection portions 10 and the shield connection portions SH are stripped, and the water-tight embedded power transmission cable PC 1 is inserted. The PC 7 is covered with the outer cover 7 and the back cover 7 is formed by two inlaid mold protectors 15 covering the periphery of the connection portion SH. The core wire connecting portion 10 is a cylindrical conductor 8 embedded in the ends of each of the conductor cores 2, 2 and a coil layer 9 of a conductive tape curling the cylindrical conductor 8 and the remaining portions of the conductor cores 2, 2 and the insulation The inner ring central portion of the connection portion 14 is composed of a tape roll layer 9 and end portions of each of the cable insulators 5 and 5 which are formed by light and thin cylindrical rubber electrodes 1 1. The cover connection part SH is electrically connected to the position of the insulation connection part 14 inner ring left
〇4S -17- (13) (13)200417568 右端部之遮掩濾網6之輕薄圓筒狀之橡膠電極1 2，1 3與於作 業現場卷曲絕緣連接部1 4總外圍之半導電膠帶或鋁箔卷層所 成之外部電極E P 〇所構成者。 絕緣連接部14係於橡膠電極1 1，12，13外圍使膠帶卷曲 至所定絕緣厚度後形成之。因此，兩端面做成傾斜筒狀之橡 膠絕緣部形成後，嵌入電纜絕緣體5後，使橡膠電極1 1，1 2 ，13進行絕緣。此橡膠絕緣部亦可於模具塡入橡膠後進行成 型者。 該橡膠電極11，12，13係由沿絕緣連接部14內環延續後 隔離筒狀橡膠電極層RE1所成，各橡膠電極層RE1係由薄片 狀半導電橡膠層SCI與此半導電橡膠層SCI總外環側或電極 端緣曲率形成部周邊形成模型之高介電率橡膠層HP1所成者 〇 將半導電橡膠層SCI側邊部往高介電率橡膠層HP1內貫 入或延入亦可，此時使半導電橡膠層SCI之貫入長度或延入 長度做成10mm以下者。且，高介電率橡膠層之軸方向殘餘 寬度至少爲5mm以上者，藉由電場解析後，使電場集中度不 超過臨界値之長度者。 又，以乙烯或具有與此相同特性之熱收縮管使遮掩連接 部SH呈水密被覆之結構，或以具玻璃纖維之環氧基製泵被 覆後，於此泵與遮掩連接部SH間塡入混合物後呈水密結構 者亦適於取代該保護體15之使用。 另外，於高介電率橡膠層中具有電纜絕緣體比介電率 (ε c)之5倍以上比介電率（ε h)後，可使該電場集中之控 Γϊ ή ά -18- (14) (14)200417568 制可達實務水準之效果，如：e c = 2.3時，ε h爲15則可有效降 低預模型連接構件之厚度。 圖4代表本發明另一實施形態之含絕緣構件輸電電纜之 連接構造CN2者。此連接構造CN2係使高介電率橡膠層HP層 合於薄片狀半導電橡膠層SC外圍後所構成之橡膠電極層RE 介裝於蕊線連接部之膠帶卷層9與絕緣連接部橡膠層EPR之 間，延至電纜絕緣體5外圍者，因此，半導電橡膠層SC端部 SCa可以極小半徑r處理之。 圖5代表本發明另一實施形態之含絕緣構件輸電電纜之 連接構造CN3者。此連接構造CN3係使高介電率橡膠層HP層 合於薄片狀半導電橡膠層SC之外圍所構成之橡膠電極層RE 介裝於遮掩濾網6與絕緣連接部之橡膠層EPR間延至電絕絕 緣體5外圍者，因此，與該蕊線連接部時相同，其半導電橡 膠層SC之端部SCa端面可以極小半徑r進行端末處理。半導 電橡膠製外部電極SCo之厚度亦極小。 中高電力用之CV電纜中，該端末處理半徑7：=〇.5mm以 上者宜。 上述之絕緣連接部14絕緣橡膠材料與遮掩連接部sh半 導電橡膠層RE1、RE之橡膠材料與高介電率橡膠層Hpi、HP 之橡膠材料（圖1之M10O係指其基材聚合物（Μ〇1ι)及對 應之添加物（M12u)爲相等者宜。 〔發明效果〕 如以上說明’本發明高介電率橡膠組成物具有比介電 (15) (15)200417568 率爲10以上、15以上或20以上之高介電率，且，無降低介 電正切、絕緣破壞電壓、絕緣抵抗等之電氣特性，可發揮 良好緩和電場效果者。 又，本發明輸電電纜構件即使於電纜終端極處理時產 生突起、異物、點等特異點，仍可緩和其周圍電場，可防 止放電等不適者。又，其作業上無須高度熟練者。 【圖式簡單說明】 [圖1 ] 代表本發明實施形態之生成高介電率橡膠組成物步驟 及輸電電纜匣式電極層製造步驟之圖者。 [圖2] 代表藉由圖1步驟所生成之高介電率橡膠組成物的試驗 結果整理表者。 [圖3] 代表本發明實施形態之含有電極層輸電電纜連接構造之 截面圖者。 [圖4 ] 代表本發明另一實施形態之含有電極層輸電電纜連接構 造之截面圖者。 [圖5] 代表本發明另一實施形態之含有電極層輸電電纜連接構 造之截面圖者。 (16) 200417568 [符號說明] BT1， ，BT2，BT3，BT4，BT5 CN1 ，CN2，CN3 連接構造 HP， HP1 高介電率橡膠層 M01 橡膠系聚合物之基材 M02 氧化鈦 M03 碳酸鋇 M10 基材 Mil 塡充材 M12 添加劑 M13 硫化劑 M22 局介電率橡膠基材 M42 、M52 半導電橡膠基材 Ma 轉移劑 Mb 結合材料 Me 脫離子水 MF 匣式電極層製造步驟 MF1 逐次成型步驟 MF2 一體成型步驟 MX 高介電率橡膠組成物 MX1 未硫化橡膠材料 MX2 硫化橡膠材料 MX3 熱處堙橡膠材料 PCI 、PC2 輸電電纜 鈦酸鋇系之材料 -21 - (17) (17)200417568 PR 高介電率橡膠組成物生成步驟 PR1 基材之準備步驟 PR2 塡充材之準備步驟 PR3 未硫化橡膠材料生成步驟 PR4 硫化處理 PR5 熱處理 RE 電極層 S 0 8 位移步驟 S09 洗淨步驟 S 1 0 高溫混練步驟 S 11 低溫混練步驟 S20，S30 成型步驟 S 2 1，S 3 1 加熱步驟 SC，SCI 半導電橡膠層 2 導體蕊 5 電纜絕緣體 6 遮掩過濾網 7 外被覆 8 筒狀導體 9 導電性膠帶之卷層 10 蕊線連接部 11 橡膠電極 12 橡膠電極 13 橡膠電極 a ci Η -22- (18)200417568 14 絕緣連接部 15 保護體〇4S -17- (13) (13) 200417568 The light-cylindrical rubber electrode covering the screen 6 at the right end 1 2 and 1 3 and the semi-conductive tape or aluminum foil with the curled connection at the job site 1 4 The outer electrode formed by the coil layer is composed of EP 0. The insulating connection portion 14 is formed around the rubber electrodes 1 1, 12, 13 by crimping the tape to a predetermined insulation thickness. Therefore, after the rubber insulation portions having the inclined cylindrical shapes at both end surfaces are formed, the rubber insulators 11, 1 2, and 13 are insulated after being inserted into the cable insulator 5. This rubber insulating portion can also be formed after the mold is inserted into the rubber. The rubber electrodes 11, 12, 13 are formed by separating the cylindrical rubber electrode layer RE1 after continuing along the inner ring of the insulating connection portion 14, and each of the rubber electrode layers RE1 is composed of a thin semiconductive rubber layer SCI and a semiconductive rubber layer SCI. Formed by the high-dielectric-constant rubber layer HP1 that forms a model around the curvature portion of the total outer ring side or the electrode edge. It is also possible to insert or extend the SCI side of the semiconductive rubber layer into the high-dielectric-constant rubber layer HP1. At this time, the penetration length or extension length of the semiconducting rubber layer SCI is made less than 10mm. In addition, the axial width of the high-permittivity rubber layer is at least 5 mm, and after the electric field analysis, the electric field concentration does not exceed the critical length. In addition, the covering connection portion SH is watertightly covered with ethylene or a heat-shrinkable tube having the same characteristics, or is covered with an epoxy-based pump made of glass fiber. Those having a watertight structure after the mixture are also suitable for replacing the protective body 15. In addition, when the specific dielectric constant (ε h) of the cable insulator is 5 times or more in the high dielectric constant rubber layer, the electric field concentration can be controlled. Γ ή ά -18- (14 ) (14) 200417568 The effect of the system can reach the practical level, such as: when ec = 2.3, ε h is 15 can effectively reduce the thickness of the pre-model connection members. Fig. 4 shows a connection structure CN2 of a transmission cable including an insulating member according to another embodiment of the present invention. This connection structure CN2 is a rubber electrode layer RE formed by laminating a high-permittivity rubber layer HP on the periphery of a sheet-shaped semi-conductive rubber layer SC. The tape roll layer 9 is inserted between the core wire connection portion and the insulation connection portion rubber layer. Between EPR, it extends to the periphery of the cable insulator 5, so the semiconductive rubber layer SC end portion SCa can be treated with a very small radius r. Fig. 5 shows a connection structure CN3 of a transmission cable including an insulating member according to another embodiment of the present invention. This connection structure CN3 is a rubber electrode layer RE composed of a high-dielectric rubber layer HP laminated on the periphery of a sheet-shaped semi-conductive rubber layer SC. The rubber electrode layer RE is interposed between the mask 6 and the rubber layer EPR of the insulating connection portion to extend to electricity. As for the periphery of the insulator 5, the end surface of the end portion SCa of the semi-conductive rubber layer SC can be subjected to end treatment with a very small radius r as in the case of the core wire connection portion. The thickness of the semiconductive rubber external electrode SCo is also extremely small. In CV cables for medium and high power, the terminal processing radius is 7: 0.5mm or more. The insulating rubber material of the above-mentioned insulating connecting portion 14 and the rubber material of the semi-conductive rubber layer RE1 and RE covering the connecting portion and the rubber material of the high dielectric constant rubber layers HPi and HP (M10O in FIG. 1 refers to the base polymer ( Μ〇ιι) and the corresponding additive (M12u) should be equivalent. [Inventive effect] As explained above, the high dielectric constant rubber composition of the present invention has a specific dielectric (15) (15) 200417568 ratio of 10 or more, Those with a high dielectric constant of 15 or more and 20 or more, without reducing the electrical characteristics such as dielectric tangent, insulation breakdown voltage, insulation resistance, etc., and exhibiting a good electric field relaxation effect. Moreover, the power transmission cable member of the present invention can be used even at the cable terminal Special points such as protrusions, foreign objects, and dots are generated during treatment, which can still ease the surrounding electric field and prevent discomforts such as discharge. Moreover, the operation does not require a highly skilled person. [Schematic description] [Figure 1] Represents the implementation of the present invention The figure shows the steps of forming the high-permittivity rubber composition and the manufacturing steps of the transmission cable box electrode layer. [Fig. 2] Representative test results of the high-permittivity rubber composition generated by the steps of Fig. 1 [Figure 3] A cross-sectional view showing a connection structure of a transmission cable containing an electrode layer according to an embodiment of the present invention. [Figure 4] A cross-sectional view showing a connection structure of a transmission cable containing an electrode layer according to another embodiment of the present invention. Figure 5] A cross-sectional view of a connection structure of a transmission cable including an electrode layer according to another embodiment of the present invention. (16) 200417568 [Symbol] BT1,, BT2, BT3, BT4, BT5 CN1, CN2, CN3 connection structure HP, HP1 High-permittivity rubber layer M01 Rubber-based polymer substrate M02 Titanium oxide M03 Barium carbonate M10 Substrate Mil 塡 Filler M12 Additive M13 Vulcanizing agent M22 Local permittivity rubber substrate M42, M52 Semi-conductive rubber substrate Ma Transfer agent Mb Bonding material Me Deionized water MF Cassette electrode layer manufacturing step MF1 Successive molding step MF2 Integral molding step MX High-permittivity rubber composition MX1 Unvulcanized rubber material MX2 Vulcanized rubber material MX3 Heat treatment rubber material PCI, PC2 Transmission cable Barium titanate-based materials-21-(17) (17) 200417568 PR high dielectric constant rubber composition generation step PR1 substrate preparation step PR2 Filling material preparation step PR3 Unvulcanized rubber material generation step PR4 Vulcanization treatment PR5 Heat treatment RE Electrode layer S 0 8 Displacement step S09 Washing step S 1 0 High temperature kneading step S 11 Low temperature kneading step S20, S30 Molding step S 2 1, S 3 1 Heating step SC, SCI semi-conductive rubber layer 2 conductor core 5 cable insulator 6 covering filter 7 outer covering 8 tubular conductor 9 roll layer of conductive tape 10 core wire connection portion 11 rubber electrode 12 rubber electrode 13 rubber electrode a ci Η -22- (18) 200417568 14 Insulated connection 15 Protective body
-23--twenty three-