200842903 九、發明說明： ^ 【發明所屬之技術領域】 '·、 树明係涉及1线缆，尤其涉及-種具有电磁屏蔽 功能的线缆。 【先前技術】 電磁屏敝賴係電子產業紐為常用的信號傳輸線 材，微米級尺寸的電磁屏蔽線境更廣泛應用於IT產品、醫 , 錢器、空間設備中。傳統的線咖料置有兩導體，内 ‘ 雜用讀輸電錢，料體心碰職的電信號並且 將其封閉在内部’從而使線繞具有高頻損耗低、屏蔽及抗 干擾能力強、使用頻帶寬等特性。 、=般情況下’電磁賤魏㈣至外的結構依次為形 成内導體的繞芯、包覆於缓芯外表面的絕緣介質層、形成 外導體的屏蔽層及外護套。其中，緵芯用來傳輪電信號， 材料以銅或銅鋅合金為主。屏蔽層通常由多股金屬線編織 ( _金屬薄麟覆在絕緣介質層外形成，㈣屏蔽電磁干 擾或热用外部化5 虎干擾。對於金屬線編織而成的屏蔽層， 金屬線的含量及編織的鬆緊程度會影響其抗干擾能力，為 獲得較好的屏蔽效果，通常，屏蔽層中金屬線的含量較大 且需要將其編織的較為緊密。對於金屬薄膜卷覆在絕緣介 質層外而成的屏蔽層，需預先形成金屬薄膜後卷覆於絕緣 介質層外。上述金屬線編織及金屬薄膜卷覆形成的屏蔽 層，在生產速度上遠遠低於線、纜纖芯的生產速度，是限制 電磁屏蔽賴量產的主要因素，另外，大量使用金屬線或 7 200842903 金屬薄膜材料作為屏蔽層，電磁屏蔽線纜的生產成本也較 高。 ·: 錄槪’確有必要提供1電磁屏蔽_，該線缓 内部設置的屏蔽層具有良好的電磁屏蔽性能並且易於製 造’適於低成本大量生產。 【發明内容】 下面將藉由實施例進-步詳細說明-種電磁屏蔽線 纟f，其具有良好的電稱蔽效果並且賴解適於 :大量生產。 一種電磁屏蔽_，包括至少—龄、包覆於镜芯外 =至少-絕緣介質層、至少—電磁屏蔽層及外護套，其中， 電磁屏蔽層包含複數奈米碳管繩。 —與先前技術減較’本發由奈米碳管卿成電磁 屏敝層’因奈米碳官具有良好的導電性能從而使屏蔽層具 有車又強的屏蔽效果，另’該屏蔽層相較於現有技術中編織 ( 金屬線或卷覆金屬薄膜結構簡單，更因此適於低成本大量 生產。 【實施方式】 、生下面將結合附圖對本發明電磁屏蔽線纜的結構及其製 造方法作進一步之詳細說明。 本發明電磁屏蔽線縵包括至少一缦芯、包覆於纜芯外 的至少-絕緣介質層、至少—電磁屏蔽層及外護套。 ^请芩閱圖1，本發明第一實施例的電磁屏蔽線纜10為 電磁屏蔽同轴線規，包括一縵芯110、包覆於纔芯110外 8 200842903 介質請、包覆於絕緣介f層1料的屏 及包後於屏蔽層130外的外護套140。其中，覺芯11〇 _ 緣介^層12()、屏蔽層13◦及外護套140同轴設1。、、'巴 ㈣由—單獨的導電芯構成，也可由複數導電 、=纏繞形成’附圖中僅顯示-單獨的導電芯。導電： 絲均由導電材料製成，可翻導電金屬材料: 二屬::材料、奈米碳管線或含奈米碳管的複合導電: 俱”中’導電金屬材料優選銅或叙 優選铜鋅合金或銅銀合金，立中 人二屬5 i材料 分比約為，辞的品質百分比約^;1中銅的品質百 •分比約為勝= 奈米石山总紿劣 銀的口口貝百分比約為60%〜90%。 戍預間凡德瓦爾力首尾相連從而形 雙管及八、 ^ 奈米碳管複合導電材料由夺米 ^ 3 ¥电金屬的材料組成。優選地，奈米俨其人、.·、200842903 IX. Description of invention: ^ [Technical field to which the invention belongs] '····················································· [Prior Art] The electromagnetic screen relies on the electronic signal industry to use the signal transmission wire. The micro-scale electromagnetic shielding wire is widely used in IT products, medical equipment, money equipment and space equipment. The traditional line coffee material has two conductors, which are used for reading and transmitting electricity, and the electrical signal of the body is in the inside and enclosed in the internal part, so that the wire winding has low frequency loss, shielding and anti-interference ability. Use features such as frequency bandwidth. In the normal case, the structure of the electromagnetic 贱 (4) to the outside is a winding core forming an inner conductor, an insulating dielectric layer covering the outer surface of the slow core, a shielding layer forming an outer conductor, and an outer sheath. Among them, the core is used to transmit electric signals, and the material is mainly copper or copper-zinc alloy. The shielding layer is usually woven by a plurality of metal wires ( _ metal thin lining is formed outside the insulating dielectric layer, (4) shielding electromagnetic interference or thermal externalization 5 tiger interference. For the metal wire woven shielding layer, the content of the metal wire and The degree of tightness of the weave will affect its anti-interference ability. In order to obtain a better shielding effect, usually, the content of the metal wire in the shielding layer is large and it needs to be woven tightly. For the metal film to be wrapped outside the insulating dielectric layer The shielding layer is formed by pre-forming a metal film and then wrapping it on the outside of the insulating dielectric layer. The shielding layer formed by the above-mentioned metal wire braiding and metal film winding is far lower in production speed than the production speed of the wire and cable core. It is the main factor limiting the electromagnetic shielding. In addition, the use of metal wire or 7 200842903 metal film material as a shielding layer, the production cost of electromagnetic shielding cable is also high. ·: Recording 'It is necessary to provide 1 electromagnetic shielding _, the shield layer provided inside the line has good electromagnetic shielding performance and is easy to manufacture 'suitable for low-cost mass production. The electromagnetic shielding wire 纟f, which has a good electrical engraving effect and is suitable for mass production, will be explained in detail by way of example. An electromagnetic shielding _, including at least age, coated on the outside of the mirror core = At least - an insulating dielectric layer, at least - an electromagnetic shielding layer and an outer sheath, wherein the electromagnetic shielding layer comprises a plurality of carbon nanotube strings. - Compared with the prior art, the present invention is formed by a carbon nanotube The nano carbon official has good electrical conductivity so that the shielding layer has a strong shielding effect of the vehicle, and the shielding layer is woven compared with the prior art (the metal wire or the coiled metal film has a simple structure and is therefore suitable for low cost). [Embodiment] The structure of the electromagnetic shielding cable of the present invention and the manufacturing method thereof will be further described in detail below with reference to the accompanying drawings. The electromagnetic shielding wire 本 of the present invention comprises at least one core and is covered outside the cable core. At least - an insulating dielectric layer, at least - an electromagnetic shielding layer and an outer sheath. Please refer to FIG. 1 , the electromagnetic shielding cable 10 of the first embodiment of the present invention is an electromagnetic shielding coaxial wire gauge, including a The core 110 is covered on the outer core of the core 110. 200842903 The medium is coated on the screen of the insulating layer and the outer sheath 140 of the outer layer of the shielding layer 130. The core 11〇_缘介^ The layer 12 (), the shielding layer 13 ◦ and the outer sheath 140 are coaxially disposed. 1, and the 'bar (four) is composed of a single conductive core, or may be formed by a plurality of conductive, = windings. Core: Conductive: The wire is made of conductive material and can be turned over with conductive metal material: Second genus:: material, nano carbon line or composite conductive with carbon nanotubes: “Medium” conductive metal material is preferably copper or Copper-zinc alloy or copper-silver alloy, Lizhong people's two genera 5 i material ratio is about, the percentage of the quality of the word is about ^; 1 the quality of copper in the hundred and the percentage is about win = nanometer stone mountain total bad silver mouth The percentage of mouth is about 60% to 90%.戍 Pre-Fan Deval force is connected end to end and thus double-tube and eight, ^ nano carbon tube composite conductive material consists of material that is riddled with metal. Preferably, the nanometer is a person, ..,
::料由奈米碳管及含銅材料製成，含銅材料：：5: ，金士或銅銀合金。當奈米碳管複合材料由銅及奈二= 〇且成蚪’奈米碳管在銅材料中的重 比、:： 0·〇1%〜2%;各太本^:山总、一人" 里曰刀比約為 —士々" &材料由崎合金及奈米碳管被 八r铜辞合舒銅的重量百分比約為7〇%，辞的重量百 ^比約為30%，奈米碳管在銅辞合金中的重量百分比 成01=;當奈米碳管複合材料由銅銀合金及奈米碳管电 ^中銅的重量百分比約為.，銀的重量百八 、力為_，，奈米碳管在舰合金中 刀 為〇m Μϊ里百分比約 9 200842903 緣"4 120用於電氣絕緣，可選用聚四氟乙稀或 奈^土 —高分子複合材料。奈雜土-高分子複合材料 中不米枯土係奈米級層狀結構的雜鹽礦物，由多種水合 的氧·、驗金屬氧化物及驗土金屬氧化 物組成，具耐火_等優良特性，如奈米高駐或奈米蒙 脫土。而分子材料可選用顿脂、聚_、聚烯烴如聚乙 烯或水丙烯等’但亚不以此為限。本實關優選奈米蒙脫 土來乙烯複D材料’其具有良好的電氣絕緣、耐火阻辦、 低煙無_等特性，不僅可為境芯提供有效的電氣絕緣，保 護纜芯，同時還能滿足環保的要求。 屏蔽層130由複數奈米碳管繩組成，該奈米碳管繩直 接或編織成網狀職錢緣介質層12()外。每個奈米碳管 繩包括複數從奈米碳管束陣列長出的奈米碳管束片段，每 個奈米碳管束諸具有大致婦的長紅每個奈米碳管束 片段由複數相互平行的奈米碳管束構成，其巾，奈米碳管 束片段兩端通過凡德瓦爾力相互連接。 屏蔽層130中的奈米碳管繩的製備方法主要包括以下 步驟： 步驟（一），製造奈米碳管束陣列。 提供-平整光滑的基底，可選用p型或n型石夕基底， 本實施例中選用P财基底，其直徑為2英寸，厚35〇微 米。在基底上採用電子束蒸發法、熱沉積或雜法等方法 形成厚度為幾奈米到幾百奈米的金屬催化劑層，其中金屬 催化劑可為鐵(Fe)、鈷（Co)、鎳（Ni)或其合金之一，優選 10 200842903 用鐵為催化劑，沉積厚度約為5奈米。 ， ❿後將沉積有催化劑的基底在空氣中退火，退火溫度 '、 範圍為300〜40(rc，時間約為1〇小時。之後基底被分害^ 許多矩形小塊，矩形小塊放入石英舟中，在保護氣體存在 條件下，在反應爐令加熱一段時間使其達到一預定溫度， 一般為500〜700°C，優選為650°C。 再通入30議碳源氣與300 sccm的保護氣體（如氮 ， 幻5〜30分鐘，制得高度約1〇〇微米的奈米碳管束陣列。 , 其中碳源氣為碳氫化合物，可為乙块、乙炫等，優選 用乙炔，該保護氣體為惰性氣體或氮氣。 為得到可拉制奈米碳管繩的奈米碳管束陣列，在製造 奈米碳管束陣列的過程中，必須滿足以下三個條件： (1) 基底平整光滑； (2) 奈米碳管束陣列的生長速度快； (3) 碳源氣的分壓要低。 f 生長奈米碳管束陣列的基底平整光滑，可使得位於基 底表面的奈米碳管生長得更密集，從而形成垂直於基底的 奈米$炭管束陣列。 奈米碳管束陣列的生長速度快與碳源氣的分壓低可有 效地抑制無定形碳沉積在奈米碳管的表面’從而減小奈米 碳管束間的凡德瓦爾力。因為無定形碳的沉積速度正比於 碳源氣的分壓，可通過調整碳源氣與保護氣體的流速比控 制碳源氣的分壓。而奈米碳管束陣列的生長速度正比於催 化劑與反應爐的溫度差。可通過調整碳源氣的流速控制催 11 200842903 化劑的溫度，而反應爐的溫度可直接控制。 在本貫施例令，催化劑與反應爐的最低溫度差控制為 5〇C，碳源氣的分壓要低於2〇%，最好是低於丨⑽。 步驟（二），製造奈米碳管繩。 從奈米碳管束陣列中選定一包括複數奈米碳管束的奈 米石反官束片段’並使用拉伸工具拉伸該奈米碳管束片段， 使奈米碳管繩沿拉伸方向形成。 在拉伸過程中，奈米碳管束片段在拉力的作用下沿拉 力方向伸長的同時，奈采碳管束片段兩端由於凡德瓦爾力 的作用而相互連接在，形成奈米碳管繩。 •拉=所㈣力的大小取決於所選奈米碳管束片段的寬 ，·及見度越i，所需要的力越大。由實驗資料得出〇· 1 ^牛的力可拉出2⑽微米寬的奈米碳管繩。在本實施例中 同度為100微米的奈米碳管束陣列可拉出長度為％厘米、 直徑為200微米的奈米碳管繩。::Material made of carbon nanotubes and copper-containing materials, copper-containing material:: 5:, gold or copper-silver alloy. When the carbon nanotube composite material consists of copper and naphthene = 〇 and the weight ratio of the carbon nanotubes in the copper material:: 0·〇1%~2%; each Taiben ^: Shan Zong, one person " 曰 比 比 — 々 々 々 々 々 々 々 々 々 々 々 — — — — — — — — — — — — — & & & & & & & & & 崎 崎 崎 崎 崎 崎 崎 崎 崎 崎 崎 崎%, the weight percentage of the carbon nanotubes in the copper alloy is 01 =; when the carbon nanotube composite is composed of copper-silver alloy and carbon nanotubes, the weight percentage of copper is about . , force _,, carbon nanotube in the ship alloy knife 〇m Μϊ percentage of about 9 200842903 edge " 4 120 for electrical insulation, optional PTFE or nano-polymer composite . The heterogeneous minerals of the nano-layered structure of the non-rice soil in the na-zao-polymer composite are composed of various hydrated oxygen, metal oxides and soil-measuring metal oxides, and have excellent properties such as fire resistance. Such as nano high or nano montmorillonite. The molecular material may be selected from the group consisting of phenol, poly-, polyolefin, such as polyethylene or water propylene, but not limited thereto. This is the best choice for nano-montmorillonite to ethylene complex D material, which has good electrical insulation, fire resistance, low smoke and other characteristics, which not only provides effective electrical insulation for the core, but also protects the core. Can meet the requirements of environmental protection. The shield layer 130 is composed of a plurality of carbon nanotube strings which are directly or woven into a mesh-like dielectric layer 12 (). Each of the carbon nanotube ropes comprises a plurality of carbon nanotube bundle segments grown from a carbon nanotube bundle array, each of the carbon nanotube bundles having a substantially long red color, each of the carbon nanotube bundle segments being plural parallel to each other. The carbon nanotube bundle is composed of a towel, and the carbon nanotube bundle segments are connected to each other by Van der Waals force. The preparation method of the carbon nanotube rope in the shielding layer 130 mainly comprises the following steps: Step (1), manufacturing an array of carbon nanotube bundles. A smooth and smooth substrate is provided, and a p-type or n-type stone-like substrate can be selected. In this embodiment, a P-base is used, which has a diameter of 2 inches and a thickness of 35 micrometers. A metal catalyst layer having a thickness of several nanometers to several hundred nanometers is formed on the substrate by electron beam evaporation, thermal deposition or heterogeneous methods, wherein the metal catalyst may be iron (Fe), cobalt (Co), nickel (Ni). Or one of its alloys, preferably 10 200842903, using iron as a catalyst, having a deposition thickness of about 5 nm. After the crucible, the substrate on which the catalyst is deposited is annealed in air, and the annealing temperature is in the range of 300 to 40 (rc, the time is about 1 hour. After that, the substrate is divided into many small rectangular pieces, and the rectangular small pieces are placed in quartz. In the boat, in the presence of the shielding gas, the reaction furnace is heated for a certain period of time to reach a predetermined temperature, generally 500 to 700 ° C, preferably 650 ° C. Re-introduction of 30 carbon source gas and 300 sccm A protective gas (such as nitrogen, phantom 5 to 30 minutes, to produce a carbon nanotube bundle array having a height of about 1 〇〇 micron. , wherein the carbon source gas is a hydrocarbon, which may be a block, a blan, etc., preferably an acetylene, The shielding gas is an inert gas or nitrogen. In order to obtain a carbon nanotube bundle array of pullable carbon nanotube ropes, the following three conditions must be met in the process of fabricating the carbon nanotube bundle array: (1) The substrate is smooth and smooth. (2) The growth rate of the carbon nanotube bundle array is fast; (3) The partial pressure of the carbon source gas is low. f The base of the growth nanotube bundle array is smooth and smooth, so that the carbon nanotubes on the surface of the substrate can grow. More dense, forming perpendicular to the substrate Nano-carbon nanotube bundle array. The growth rate of the carbon nanotube bundle array is fast and the partial pressure of the carbon source gas is low, which can effectively inhibit the deposition of amorphous carbon on the surface of the carbon nanotubes, thereby reducing the virgin between the carbon nanotube bundles. Valli. Because the deposition rate of amorphous carbon is proportional to the partial pressure of the carbon source gas, the partial pressure of the carbon source gas can be controlled by adjusting the flow rate ratio of the carbon source gas to the shielding gas. The growth rate of the carbon nanotube bundle array is proportional to The temperature difference between the catalyst and the reaction furnace can be controlled by adjusting the flow rate of the carbon source gas, and the temperature of the reaction furnace can be directly controlled. In the present embodiment, the minimum temperature difference between the catalyst and the reaction furnace is controlled. For 5〇C, the partial pressure of the carbon source gas should be less than 2〇%, preferably lower than 丨(10). Step (2), manufacture the carbon nanotube rope. Select one from the carbon nanotube bundle array including the complex number The nano-steel beam segment of the carbon tube bundle is used to stretch the carbon nanotube bundle segment using a stretching tool to form a nanocarbon tube string in the direction of stretching. During the stretching process, the carbon nanotube bundle segment is Pulling force At the same time of elongation, the ends of the carbon nanotube bundles are connected to each other due to the effect of van der Waals force, forming a carbon nanotube rope. • The magnitude of the force of the pull-down (four) depends on the width of the selected carbon nanotube bundle segment. · The more the degree of visibility, the greater the force required. It is concluded from the experimental data that the force of 〇 1 ^ 2 can pull out the 2 (10) micron wide carbon nanotube rope. In this embodiment, the same degree is 100 microns. The carbon nanotube bundle array can pull a carbon nanotube rope with a length of 100 cm and a diameter of 200 microns.
=護套140由絕緣簡製成，可選用奈_土—高分 神枓的複合材料，其中奈_土可為奈 冡脫土，高分子妯粗π* 3不木 稀或聚丙烯等，_ = ::脂侧、聚稀烴如聚乙 土-f乙、為限。本實施例優選奈米蒙脫 性能’、低煙無良好的機械性能、耐火阻燃 機械、物理或化學等外^為、輯^保護’有效抵禦 要求。 、 貝W，同日守還旎滿足環境保護的 請參閱圖 本發明第二實: 電磁屏蔽線纜 200842903 2〇包括複數镜芯210 (圖2中共顯示七個缓芯）、每一縣 210外復座絕緣介貝層22〇、包覆於複數繞芯外的一 屏蔽層230及—包覆於屏蔽層230外表面的外護套24〇。 屏蔽層咖及絕緣介料22Q關_可填歧緣材料。 其令，每個缓芯210及絕緣介質層22〇 '屏蔽層23〇及外 護套240的構成、材料及屏蔽層23{)内奈米碳管繩的製備 方法與第-實施例中的變芯UQ、絕緣介㈣⑽、屏蔽層 1別及外護套140的構成、材料及屏蔽層13〇内的奈米碳 管繩的製備方法基本相同。 口月 > 兒㈤，本發明第三實施例揭示的電磁屏蔽線纜 3〇包括複滅芯31Q(目巾共顯示五倾芯）、每-镜芯 3—1〇外覆蓋-絕緣介質層32()及一屏蔽層聊、以及包覆於 複數镜芯310外表面的外護套34〇。屏蔽層33〇的作用在 於對各個mio進行單獨的屏蔽，錄不僅可防止外來 =素對mio内部傳輸的電信號造成干擾^且可防止各 乡見芯310内傳輸的不同電信號間相互發生干擾。其中，每 個纜芯310、絕緣介質層32〇、屏蔽層33〇及外護套_的 ，成材料及屏蔽層330内奈米碳管繩的製備方法斑第一 ^施例中峨芯11G、絕緣介質層⑽、屏蔽層13Q耕護 140的構成、材料及屏蔽層13〇内的奈米碳管繩的製備 方法基本相同。 提出:發明確已符合發明專利之要件’遂依法 明准，Μ上所述者僅為本發明之較佳實施例， 不月b以此限制本蚊_請細顧。舉凡熟悉本案技藝 13 200842903 之人士援依本發明之精神所作之等效修飾或變化，皆應涵 . 蓋於以下申請專利範圍内。 m ： 【圖式簡單說明】 % 圖1係本發明第一實施例的電磁屏蔽線纜的截面結構 示意圖。 圖2係本發明第二實施例的電磁屏蔽線纜的截面結構 示意圖。 圖3係本發明第三實施例的電磁屏蔽線纜的截面結構 示意圖。 【主要元件符號說明】 10、 20、 30 110、 210、 310 120、 220、 320 130、 230、 330 140、 240、 340 電磁屏蔽線纜 纜芯 絕緣介質層 屏蔽層 外護套 14=The sheath 140 is made of simple insulation, and the composite material of nai-soil-high-divided scorpion can be selected, wherein the na- soil can be naphtha de-soil, the polymer is coarse π*3, not wood-thin or polypropylene, etc. _ = :: fat side, poly-saturated hydrocarbons such as polyethylene-f-B, is limited. In this embodiment, it is preferred that the nano-montmorilloning property, low smoke has no good mechanical properties, fire-retardant mechanical, physical or chemical, and the like. Please refer to the figure for the second reality of the present invention: Electromagnetic shielded cable 200842903 2〇 includes multiple mirror cores 210 (a total of seven slow cores are shown in Figure 2), each county 210 The insulating interlayer layer 22 is covered with a shielding layer 230 outside the plurality of cores and the outer sheath 24 is covered on the outer surface of the shielding layer 230. Shield layer coffee and insulation material 22Q off _ can be filled with margin material. The method for preparing each of the slow core 210 and the insulating dielectric layer 22 〇 'the shielding layer 23 〇 and the outer sheath 240, the material and the shielding layer 23 {) in the nano carbon tube rope and the first embodiment The manufacturing method and material of the variable core UQ, the insulating dielectric (4) (10), the shielding layer 1 and the outer sheath 140, and the preparation method of the carbon nanotube rope in the shielding layer 13 are basically the same. The moon-shield (five), the electromagnetic shielding cable 3〇 disclosed in the third embodiment of the present invention includes a re-extinguishing core 31Q (the headphone displays a total of five-leaf core), each of the mirror core 3-1 outer cover-insulating dielectric layer 32() and a shielding layer, and an outer sheath 34〇 covering the outer surface of the plurality of mirror cores 310. The function of the shielding layer 33〇 is to separately shield each mio, and not only can prevent external signals from interfering with the electrical signals transmitted inside the mio, and can prevent mutual interference between different electrical signals transmitted in the township core 310. . Wherein, each of the cable core 310, the insulating medium layer 32, the shielding layer 33, and the outer sheath _, the material and the shielding layer 330 in the preparation method of the carbon nanotube rope, the first embodiment of the 峨 core 11G The composition of the insulating dielectric layer (10), the shielding layer 13Q, and the preparation method of the material and the carbon nanotube string in the shielding layer 13 are basically the same. It is proposed that the invention has indeed met the requirements of the invention patents, which are only in accordance with the law, and the above description is only a preferred embodiment of the invention. Any equivalent modifications or variations made by those who are familiar with the skill of the present invention in accordance with the spirit of the present invention shall be covered by the following patent application. m: [Simple description of the drawings] Fig. 1 is a schematic cross-sectional view showing the electromagnetic shielded cable of the first embodiment of the present invention. Fig. 2 is a schematic cross-sectional view showing an electromagnetic shielding cable of a second embodiment of the present invention. Fig. 3 is a schematic cross-sectional view showing an electromagnetic shielding cable according to a third embodiment of the present invention. [Explanation of main component symbols] 10, 20, 30 110, 210, 310 120, 220, 320 130, 230, 330 140, 240, 340 Electromagnetic shielded cable Core Insulation dielectric layer Shielding outer sheath 14