201020204 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種奈米材料膜的拉伸方法，尤其涉及一 種奈米碳管膜的拉伸方法。 •【先前技術】 奈米碳管（Carbon Nanotube，CNT)係一種新型碳材 料，1991年由日本研究人員Iijima在實驗室製備獲得（請 參見，Helical Microtubules of Graphitic Carbon，Nature, ❹ V354, P56〜58 (1991))。奈米碳管的特殊結構决定了其具有 特殊的性質，如高抗張强度和高熱穩定性；隨著奈米碳管 螺旋方式的變化，奈米碳管可呈現出金屬性或半導體性 等。由於奈米碳管具有理想的一維結構以及在力學、電學、 熱學等領域優良的性質，其在材料科學、化學、物理學等 交叉學科領域已展現出廣闊的應用前景，包括場發射平板 顯示，電子器件，原子力顯微鏡（Atomic Force Microscope， AFM)針尖，熱傳感器，光學傳感器，過遽器等。 ® 雖然奈米碳管性能優異，具有廣泛的應用前景，然， 由於奈米碳管爲奈米級，大量奈米碳管易團聚，不易分散 形成均勻的宏觀的奈米碳管結構，從而限制了奈米碳管在 宏觀領域的應用。有鑒於此，如何獲得宏觀的奈米碳管結 構係奈米領域研究的關鍵問題。 爲了製成宏觀的奈米碳管結構，先前的方法主要包 括：直接生長法、噴塗法或朗繆爾·布洛節塔（Langmuir Blodgett，LB)法。其中，直接生長法一般通過控制反應條 201020204 如以疏％作爲添加劑或設置多層催化劑等，通過化學 氣相沈積法直接生長得到奈米碳管薄膜結構^喷塗法一般 通過將奈米碳管粉末形成水性溶液並塗覆於—基材表面， ，乾燥後形成奈米碳管薄膜結構。LB法—般通過將一奈米 碳管溶液混入另一具有不同密度之溶液（如有機溶劑）中， 利用刀子自組裝運動，奈米碳管浮出溶液表面形成奈米碳 管薄膜結構。 然而’上述製備奈米碳管結構的方法通常步驟較爲繁 雜通過直接生長法或喷塗法獲得的奈米碳管薄膜結構 中’奈米碳管往往容易聚集成團，導致薄膜厚度不均。奈 米碳管在奈米碳管結構中爲無序排列，不利於充分發揮奈 米碳管的性能。 爲克服上述問題，申請人於2002年9月16日申請的 2008年8月20日公告的專利號為ZL〇213476〇 3中國專利 中揭不了-種簡單的獲得有序的奈米碳管結構的方法。該 Θ奈米碳管結構爲一連續的奈米碳管繩，其爲直接從—超順 排f来碳管陣列中拉取獲得。所製備的奈米碳管繩中的奈 米碳管首尾相連且通過凡德瓦爾力緊密結合。該奈米碳管 繩的長度不限。其寬度與奈米碳管陣列所生長的基底尺寸 有關。進一步地，所述奈米碳管繩包括多個首尾相連的奈 米碳管片段’每個奈米碳管片段具有大致相等的長度且每 個奈米碳管片段由多個相互平行的奈米碳管構成，奈米碳 管片段兩端通過凡德瓦爾力相互連接。201020204 IX. Description of the Invention: [Technical Field] The present invention relates to a method for stretching a film of a nano material, and more particularly to a method for stretching a film of a carbon nanotube film. • [Prior Art] Carbon Nanotube (CNT) is a new type of carbon material that was prepared in the laboratory by Japanese researcher Iijima in 1991 (see, Helical Microtubules of Graphitic Carbon, Nature, ❹ V354, P56~ 58 (1991)). The special structure of the carbon nanotubes determines its special properties, such as high tensile strength and high thermal stability. With the change of the helical shape of the carbon nanotubes, the carbon nanotubes can exhibit metallic or semiconducting properties. Because the carbon nanotubes have an ideal one-dimensional structure and excellent properties in the fields of mechanics, electricity, heat, etc., they have shown broad application prospects in the fields of materials science, chemistry, physics and other interdisciplinary fields, including field emission flat panel display. , electronic devices, Atomic Force Microscope (AFM) tips, thermal sensors, optical sensors, filters, etc. ® Although the performance of the carbon nanotubes is excellent, it has a wide application prospect. However, since the carbon nanotubes are nanometer-scale, a large number of carbon nanotubes are easily agglomerated and are not easily dispersed to form a uniform macroscopic carbon nanotube structure, thereby limiting The application of carbon nanotubes in macroscopic fields. In view of this, how to obtain macroscopic carbon nanotube structures is a key issue in the field of nanotechnology research. In order to make a macroscopic carbon nanotube structure, the prior methods mainly include: direct growth method, spray method or Langmuir Blodgett (LB) method. Among them, the direct growth method generally obtains a carbon nanotube film structure by directly controlling the reaction strip 201020204, such as using a thin % as an additive or a multi-layer catalyst, etc., by a chemical vapor deposition method. An aqueous solution is formed and applied to the surface of the substrate, and after drying, a carbon nanotube film structure is formed. The LB method generally uses a knife self-assembly motion by mixing a carbon nanotube solution into another solution having a different density (such as an organic solvent), and the carbon nanotubes float out of the surface of the solution to form a carbon nanotube film structure. However, the above-mentioned method for preparing a carbon nanotube structure generally has a complicated procedure. The carbon nanotube film structure obtained by the direct growth method or the spray method tends to be aggregated, resulting in uneven thickness of the film. The carbon nanotubes are disorderly arranged in the carbon nanotube structure, which is not conducive to the full performance of the carbon nanotubes. In order to overcome the above problems, the patent number of the applicant announced on September 16, 2002, published on August 20, 2008 is ZL〇213476〇3 Chinese patent - a simple orderly obtained carbon nanotube structure Methods. The tantalum carbon nanotube structure is a continuous carbon nanotube rope which is obtained by directly drawing from the super-sequential row f to the carbon tube array. The carbon nanotubes in the prepared carbon nanotube ropes are connected end to end and tightly bonded by van der Waals force. The length of the carbon nanotube string is not limited. Its width is related to the size of the substrate on which the carbon nanotube array is grown. Further, the carbon nanotube string comprises a plurality of end-to-end carbon nanotube segments each having approximately equal lengths and each of the carbon nanotube segments being composed of a plurality of mutually parallel nanometers The carbon tube is formed, and the carbon nanotube segments are connected to each other by Van der Waals force.
Baughma，Ray，H.等人細5 於文獻 “ st_g， 201020204Baughma, Ray, H. et al. 5 in the literature " st_g, 201020204
Transparent, Multifunctional, Carbon Nanotube Sheets” Mei Zhang, Shaoli Fang, Anvar A. Zakhidov, Ray H. Baughman，etc.· Science, Vol.309, P1215-1219(2005)中揭示 了 一種奈米碳管膜的製備方法。所述奈米碳管膜同樣可從 一奈米碳管陣列中拉取製備。該奈米碳管陣列爲一生長在 一基底上的奈米碳管陣列。所述奈米碳管膜的長度不限。 然而，上述兩種方式製備的奈米碳管膜或繩的寬度均受所 述奈米碳管陣列生長基底的尺寸的限制（先前的用於生長 ©奈米碳管陣列的基底一般爲4英寸），無法製備大面積奈米 碳管膜。另外，所製備的奈米碳管膜的透光度不够好。 有鑒於此，提供一種奈米碳管膜的拉伸方法實為必要， 該拉伸方法可製備大面積且具有較好的透光度的奈米碳管 膜。 【發明内容】 一種奈米破管膜的拉伸方法，其包括以下步驟：提供 至少一奈米碳管膜及至少一彈性支撑體；將所述至少一奈 ❹ 米碳管膜至少部分固定設置於該至少一彈性支撑體；以及 拉伸該彈性支撑體。 相較於先前技術，本技術方案提供的奈米碳管膜的拉 伸方法具有以下優點：其一，所述拉伸奈米碳管膜的方法 爲通過將奈米碳管膜至少部分固定設置在一彈性支撑體 上，拉伸該彈性支撑體，該拉伸方法簡單、成本較低。其 二，本技術方案提供的拉伸後的奈米碳管膜具有較好的透 光度，可廣泛應用於對透光度具有較高要求的裝置中，如 201020204 本其二’所述奈米碳管膜具有較好的拉伸性能， 故所述不米碳管膜可用於彈性可拉伸元件及設備中。其 •四’本技術方案提供的奈米碳管膜的拉伸方備 •大尺寸奈㈣管膜，進而有利於擴大奈米碳f膜在大3 裝置中的應用。 【實施方式】 、下將、.·〇 σ附圖詳細說明本技術方案實施例提供的奈 米碳管膜及其拉伸方法。 ” ❹〆請參閱圖1至圖4,本技術方案實施例提供一種奈米 碳管膜10。該奈米碳管膜1〇包括多個奈米碳管1〇〇。該奈 米厌管中的部分奈米碳管首尾相連形成一奈米碳管線 102所述矿、米碳管線1〇2中的奈米碳管可沿奈米碳管線的 轴向排列，且奈米碳管之間通過凡德瓦爾力緊密連接。所 述奈米碳管膜10包括多個並排且間隔設置的奈米碳管線 102。奈米碳管線1〇2之間通過凡德瓦爾力緊密連接❶所述 _奈米故管線102均勻分布在奈米碳管膜中且沿第一方向 排列。該第一方向爲D1方向。相鄰的奈米碳管線1〇2之 間包括至少一個奈米碳管1〇4。該部分奈米碳管1〇4的排 列方向不限。該部分奈米碳管1〇4可與至少兩個相互並排 设置的奈米碳管線102接觸。進一步地，所述奈米碳管線 102之間可包括多個首尾相連的奈米碳管1〇4。所述多個奈 米石炭管線102之間有間距1〇6 ’且相鄰兩個奈米碳管線；[〇2 之間的距離在受力後發生變化。所述多個奈米碳管線1 〇2 和奈米碳管線102之間的奈米碳管104形成一具有自支撑 11 201020204 結構的奈米碳管膜1G。所謂自支撑結構的奈米碳管膜 即所述奈米碳管膜1()無需通過—支撑體支採，也能保 自身特定的形狀或只需部分設置在—支撑體上即可維拉 其膜狀結構’且奈米碳管膜本身的結構不會發生變化、。 如將所述奈米碳管冑10設置在一框架或兩個間隔設 構上’位於中間未與框架或支撑結構接觸的奈米碳 管膜10可懸空設置。 來 戶㈣奈米碳管膜10在垂直於奈米碳管線102的方向上 ❹受力後發生形變。該垂直於奈米碳管線皿的方向爲D2 方向。該D2方向垂直於D1方向。當所述奈米碳 =2方向上被拉伸時，奈米碳管膜1G發生形變，奈米碳 二線102之間的距離發生變化。具體地，所述奈米碳管線 2之間的距離隨奈米碳管膜1()形變率的增加而增大 述奈米碳管臈1()在D2方向的形變率小於#於3嶋。所 述相鄰的奈米竣管線1〇2之間的距離大於〇微米且小於等 ❹=50微米。該相鄰的奈米碳管線1〇2之間的距離隨奈米碳 S膜10的形變率的增加而增大。所述多個奈米碳管線皿 可形成一奈米碳管束。 實米碳管膜10的長度、寬度及厚度不限，可根據 製備。所述奈米碳管膜10的厚度優選爲大於等於 _不米且小於等於1毫米。所述奈米碳管膜10中的奈米 =100的直控大於等於0 5奈米且小於等於50奈求。所 f不米碳管1G0的長度爲大於等於％微米且小於等於$ 12 201020204 所述奈米碳管膜10在D2方向上的形變率與奈米碳管 膜10的厚度及密度有關。所述奈米碳管膜1〇的厚度及密 度愈大’其在D2方向上的形變率愈大。進一步地，所述 奈米碳管膜10的形變率與奈米碳管線102之間的奈米碳管 104的含量有關。在一定含量範圍内，所述奈米碳管線 之間的奈米碳管104的含量越多，所述奈米碳管膜1〇在 D2方向上的形變率越大。所述奈米碳管膜1〇在D2方向 上的形變率小於等於300%。本技術方案實施例中，所述 ❹奈米碳管膜10的厚度爲50奈米，其在D2方向上的形變 率可達到150%。 所述奈米碳管膜10的透光度（光透過比率）與奈米碳 管膜10的厚度及密度有關。所述奈米碳管臈1〇的厚度及 密度越大，所述奈米碳管膜10的透光度越小。進一步地， 所述奈米碳管膜10的透光度與奈米碳管線102之間的距離 及相鄰奈米碳管線102之間的奈米碳管1〇4的含量有關。 ❹所述奈米碳管線102之間的距離越大，奈米碳管線1〇2之 間的奈米碳管104的含量越少，則所述奈米碳管膜1〇的透 光度越大。所述奈米碳管膜10的透光度大於等於6〇%且 小於等於95%»本技術方案實施例中，當奈米碳管膜1〇 的厚度爲50奈米時，拉伸前該奈米碳管膜1〇的透光度爲 大於等於67%且小於等於82%。當其形變率爲12〇%時， 所述奈米碳管膜10的透光度爲大於等於84%且小於等於 92%。以波長爲550奈米的綠光爲例，拉伸前所述奈米碳 管膜10的透光度爲78%，當形變率爲120%時，該奈米碳 13 201020204 管膜10的透光度可達89%。 由於所述奈米碳管膜10具有較好的拉伸性能，其可在 .D2方向發生形變，故所述奈米碳管膜1〇可廣泛應用於彈 性可拉伸το件和設備中。另外，本技術方案提供的奈米碳 管膜10的拉伸方法避免了採用繁雜的工序和昂貴的設備 如雷射器對奈米碳管膜10進行後續處理來提高奈米碳管 膜1〇透光度的步驟，其可廣泛應用於對透光度具有較高要 求的裝置中，如觸摸屏等。另外，所述奈米碳管膜可用 於發聲裝置中’且碳奈米膜1〇在拉伸過程中不影響發聲效 請同時參閱圖5及圖6,本技術方案實施例進一步提 供-種拉伸奈米碳管帛1〇的方法，具體包括以下步驟： 步驟-提供至少-奈米碳管膜1G及至少—彈性支律 體20 〇 ❹ 所述奈米碳管膜i㈣製備方法具體包括以下步驟· 排奈=管：奈米碳管陣列，優選地’該陣列爲超順 =述奈米碳管陣列的製備方法可爲化學氣相沈積法。 f石墨電極恒流電弧放電沈積法、雷射蒸發沈積法等。 次’㈣—拉^具從所述奈米碳管 得-奈米碳管膜1〇。 τ拉取獲 所述奈米碳管膜10的製備方法具體包括以· ϋ上Λ奈中選定—個或具有—定寬“ “反管’本實施例優選爲採用具有-定寬度的膠帶 201020204 接觸奈米碳管陣列以選定一個或具有一定寬度的多個奈 米碳管；（b )以一定速度拉伸該選定的奈米碳管，從而形 成首尾相連的多個奈米碳管片段，以形成一連續的奈米碳 管膜10。 在上述拉取過程中，該多個奈米碳管片段在拉力作用 下沿拉伸方向逐漸脫離基底的同時，由於凡德瓦爾力作 用’該選定的多個奈米碳管片斷分別與其它奈米碳管片斷 首尾相連地連續地被拉出，從而形成一奈米碳管膜10。本 ❹實施例中’該奈米碳管膜10的寬度與奈米碳管陣列所生長 的基底的尺寸有關’該奈米碳管膜10的長度不限，可根據 實際需求制得。該奈米碳管膜10的厚度與選取的奈米碳管 片段有關’其厚度範圍爲0.5奈米〜100微米。本技術方案 實施例中，所述奈米碳管膜1〇的厚度爲50奈米。 圖3爲奈米碳管膜1〇放大500倍的掃描電鏡照片。該 奈米碳管膜10包括多個奈米碳管線102並排且間隔設置。 ❹奈米竣管線102之間通過凡德瓦爾力相互連接。所述奈米 碳管線102均勻分布在奈米碳管臈1〇中且沿第一方向排 列。該第一方向爲奈米碳管膜的拉取方向，即D1方向。 所述奈米碳管線102之間包括至少一個奈米碳管1〇4。該 部分奈米破管104的排列方向不限。該部分奈米碳管1〇4 可與至少兩個相鄰的並排設置的奈米碳管線1〇2接觸。進 一步地，所述奈米碳管線102之間可包括多個首尾相連的 奈米碳管104。所述多個奈米碳管線1〇2之間有距離，且 該距離在受力後發生變化。所述多個奈米碳管線102和奈 15 201020204 米碳管線102之間的奈米碳管104形成一具有自支撑結構 的奈米碳管膜10。 所述奈米碳管膜10的透光度（光透過比率）與奈米碳 管膜10的厚度及密度有關。所述奈米碳管膜10的厚度及 密度越大’所述奈米碳管膜10的透光度越小。進一步地， 所述奈米碳管膜10的透光度與相鄰奈米碳管線1〇2之間的 距離及奈米碳管線102之間的奈米碳管104的含量有關。 所述奈米碳管線102之間的距離越大，奈米碳管線1〇2之 ❹間的奈米碳管104的含量越少，則所述奈米碳管膜1〇的透 光度越大。請參閱圖7,本技術方案實施例中，該直接製 備的奈米碳管膜10的厚度爲50奈米，其透光度大於等於 67%且小於等於82%。 所述彈性支撑體20具有較好的彈性。所述彈性支撑體 20的形狀和結構不限，其可爲一平面結構或一曲面結構。 所述彈性支撑體20包括一彈性橡膠、彈簧及橡皮筋中的一Transparent, Multifunctional, Carbon Nanotube Sheets" Mei Zhang, Shaoli Fang, Anvar A. Zakhidov, Ray H. Baughman, etc., Science, Vol. 309, P1215-1219 (2005) discloses the preparation of a carbon nanotube film The carbon nanotube film can also be prepared by drawing from a carbon nanotube array, which is an array of carbon nanotubes grown on a substrate. However, the width of the carbon nanotube film or rope prepared by the above two methods is limited by the size of the carbon nanotube array growth substrate (previously used for growing the CN carbon nanotube array). The substrate is generally 4 inches), and a large-area carbon nanotube film cannot be prepared. In addition, the prepared carbon nanotube film has insufficient transmittance. In view of this, a method for stretching a carbon nanotube film is provided. If necessary, the stretching method can prepare a carbon nanotube film having a large area and having a good transmittance. [A SUMMARY] A method for stretching a nano tube breaking film, comprising the steps of: providing at least one a carbon tube film and at least one elastic support; The at least one carbon nanotube film is at least partially fixed to the at least one elastic support; and the elastic support is stretched. Compared with the prior art, the present invention provides the stretching of the carbon nanotube film. The method has the following advantages: First, the method for stretching the carbon nanotube film is to stretch the elastic support by at least partially fixing the carbon nanotube film on an elastic support, and the stretching method is simple. The cost is lower. Secondly, the stretched carbon nanotube film provided by the technical solution has good transmittance, and can be widely applied to devices having high requirements for transmittance, such as 201020204. The 'n carbon nanotube film has good tensile properties, so the carbon nanotube film can be used in elastic stretchable components and equipment. The four carbon nanotube film provided by the technical solution Stretching preparations • Large size Nai (4) tube film, which is conducive to the expansion of the application of nano carbon f film in the large 3 device. [Embodiment], the following, the details of the technical solution Example of carbon nanotube film and its stretching Act. "❹〆 see FIG. 1 to FIG. 4, the present embodiment provides a technical solution of the carbon nano tube film 10. The carbon nanotube film 1 〇 includes a plurality of carbon nanotubes 1 〇〇. A part of the carbon nanotubes in the nano-tubes are connected end to end to form a nano carbon line 102. The carbon nanotubes in the rice and carbon carbon line 1〇2 can be arranged along the axial direction of the nano carbon line, and The carbon tubes are tightly connected by Van der Waals force. The carbon nanotube membrane 10 includes a plurality of carbon nanotubes 102 arranged side by side and spaced apart. The nano carbon line 1〇2 is closely connected by van der Waals force, and the _ nanometer line 102 is evenly distributed in the carbon nanotube film and arranged in the first direction. The first direction is the D1 direction. Between adjacent nanocarbon lines 1〇2 includes at least one carbon nanotube 1〇4. The arrangement of the partial carbon nanotubes 1〇4 is not limited. The portion of the carbon nanotubes 1〇4 can be in contact with at least two nanocarbon lines 102 arranged side by side. Further, a plurality of carbon nanotubes 1〇4 connected end to end may be included between the nanocarbon pipelines 102. The plurality of carboniferous pipelines 102 have a spacing of 1 〇 6 ′ and adjacent two nanocarbon pipelines; [the distance between 〇 2 varies after being stressed. The carbon nanotubes 104 between the plurality of nanocarbon lines 1 〇 2 and the carbon nanotubes 102 form a carbon nanotube film 1G having a self-supporting 11 201020204 structure. The so-called self-supporting structure of the carbon nanotube film, that is, the carbon nanotube film 1 () does not need to pass through the support body, can also protect its own specific shape or only partially disposed on the support body can be Its membrane structure 'and the structure of the carbon nanotube membrane itself does not change. The carbon nanotube film 10, such as the carbon nanotubes 10 disposed in a frame or two spaced configurations, in contact with the frame or support structure, may be suspended. The guest (4) carbon nanotube film 10 is deformed after being subjected to a force in a direction perpendicular to the carbon nanotube line 102. The direction perpendicular to the nanocarbon pipeline is in the D2 direction. The D2 direction is perpendicular to the D1 direction. When the nanocarbon = 2 direction is stretched, the carbon nanotube film 1G is deformed, and the distance between the carbon nanotube lines 102 changes. Specifically, the distance between the nano carbon line 2 increases as the deformation rate of the carbon nanotube film 1 () increases, and the deformation rate of the carbon nanotube 臈 1 () in the D2 direction is less than #于3嶋. . The distance between the adjacent nanotubes 1 〇 2 is greater than 〇 micrometers and less than equal ❹ = 50 μm. The distance between the adjacent nanocarbon tubes 1〇2 increases as the deformation rate of the nanocarbon S film 10 increases. The plurality of nanocarbon pipelines can form a bundle of carbon nanotubes. The length, width and thickness of the carbon nanotube film 10 are not limited and can be prepared according to them. The thickness of the carbon nanotube film 10 is preferably _ not more than 1 mm and less than or equal to 1 mm. The direct control of nanometer=100 in the carbon nanotube film 10 is greater than or equal to 0.5 nanometers and less than or equal to 50 nanometers. The length of the f-carbon tube 1G0 is greater than or equal to % micron and less than or equal to $12 201020204 The deformation rate of the carbon nanotube film 10 in the D2 direction is related to the thickness and density of the carbon nanotube film 10. The larger the thickness and density of the carbon nanotube film 1', the greater the deformation rate in the D2 direction. Further, the deformation rate of the carbon nanotube film 10 is related to the content of the carbon nanotubes 104 between the carbon nanotubes 102. Within a certain range of content, the more the content of the carbon nanotubes 104 between the nanocarbon tubes, the greater the deformation rate of the carbon nanotube film 1 in the direction of D2. The deformation rate of the carbon nanotube film 1 in the D2 direction is 300% or less. In the embodiment of the technical solution, the carbon nanotube film 10 has a thickness of 50 nm, and the deformation rate in the D2 direction can reach 150%. The transmittance (light transmission ratio) of the carbon nanotube film 10 is related to the thickness and density of the carbon nanotube film 10. The greater the thickness and density of the carbon nanotubes, the smaller the transmittance of the carbon nanotube film 10. Further, the transmittance of the carbon nanotube film 10 is related to the distance between the carbon nanotubes 102 and the content of the carbon nanotubes 1〇4 between the adjacent nanocarbon lines 102. The greater the distance between the nanocarbon pipelines 102 and the smaller the content of the carbon nanotubes 104 between the nanocarbon pipelines 1 and 2, the more the transmittance of the carbon nanotube membranes 1〇 Big. The transmittance of the carbon nanotube film 10 is 6% or more and 95% or less. In the embodiment of the present invention, when the thickness of the carbon nanotube film is 50 nm, the film is stretched before stretching. The transmittance of the carbon nanotube film of 1 大于 is 67% or more and 82% or less. When the deformation rate is 12%, the transmittance of the carbon nanotube film 10 is 84% or more and 92% or less. Taking the green light having a wavelength of 550 nm as an example, the transmittance of the carbon nanotube film 10 before stretching is 78%, and when the deformation rate is 120%, the nanocarbon 13 201020204 is transparent. The luminosity can reach 89%. Since the carbon nanotube film 10 has good tensile properties and can be deformed in the .D2 direction, the carbon nanotube film 1 can be widely used in elastic stretchable articles and equipment. In addition, the stretching method of the carbon nanotube film 10 provided by the technical solution avoids the subsequent treatment of the carbon nanotube film 10 by a complicated process and an expensive device such as a laser to improve the carbon nanotube film. The step of transmittance, which can be widely applied to devices having high requirements for transmittance, such as a touch screen. In addition, the carbon nanotube film can be used in a sounding device, and the carbon nanofilm film 1 does not affect the sounding effect during the stretching process. Please refer to FIG. 5 and FIG. 6 further, and the embodiment of the present technical solution further provides The method for preparing a carbon nanotube ,1〇 comprises the following steps: Step-providing at least a carbon nanotube film 1G and at least an elastic support body 20 〇❹ The preparation method of the carbon nanotube film i (4) specifically includes the following Step · Tanai = tube: carbon nanotube array, preferably 'the array is a super-supplemented carbon nanotube array can be prepared by chemical vapor deposition. f graphite electrode constant current arc discharge deposition method, laser evaporation deposition method, and the like. The second '(four)- pull tool has a carbon nanotube film from the carbon nanotube. The method for preparing the carbon nanotube film 10 of the τ pull specifically includes: selecting or having a constant width of the “reverse tube”. This embodiment preferably uses a tape having a constant width 201020204. Contacting the carbon nanotube array to select one or a plurality of carbon nanotubes having a certain width; (b) stretching the selected carbon nanotubes at a certain speed to form a plurality of carbon nanotube segments connected end to end, To form a continuous carbon nanotube film 10. In the above drawing process, the plurality of carbon nanotube segments are gradually separated from the substrate in the stretching direction under the action of the tensile force, and the selected plurality of carbon nanotube segments are respectively associated with the other naphthalenes due to the effect of the van der Waals force. The carbon nanotube segments are continuously pulled out end to end to form a carbon nanotube film 10. In the present embodiment, the width of the carbon nanotube film 10 is related to the size of the substrate on which the carbon nanotube array is grown. The length of the carbon nanotube film 10 is not limited and can be obtained according to actual needs. The thickness of the carbon nanotube film 10 is related to the selected carbon nanotube segments, and its thickness ranges from 0.5 nm to 100 μm. In an embodiment of the present invention, the carbon nanotube film has a thickness of 50 nm. Figure 3 is a scanning electron micrograph at 500X magnification of the carbon nanotube film. The carbon nanotube film 10 includes a plurality of nanocarbon lines 102 arranged side by side and spaced apart. The nanotubes 102 are interconnected by a van der Waals force. The nanocarbon line 102 is evenly distributed in the carbon nanotubes 1〇 and arranged in the first direction. The first direction is the pulling direction of the carbon nanotube film, that is, the D1 direction. At least one carbon nanotube 1〇4 is included between the nanocarbon pipelines 102. The arrangement of the portion of the nanotube 104 is not limited. The portion of the carbon nanotubes 1〇4 can be in contact with at least two adjacent side-by-side carbon nanotubes 1〇2. Further, a plurality of carbon nanotubes 104 connected end to end may be included between the nanocarbon lines 102. There is a distance between the plurality of nanocarbon lines 1〇2, and the distance changes after being stressed. The carbon nanotubes 104 between the plurality of nanocarbon lines 102 and the Nai 15 201020204 m carbon line 102 form a carbon nanotube film 10 having a self-supporting structure. The transmittance (light transmission ratio) of the carbon nanotube film 10 is related to the thickness and density of the carbon nanotube film 10. The thickness and density of the carbon nanotube film 10 are larger, and the transmittance of the carbon nanotube film 10 is smaller. Further, the transmittance of the carbon nanotube film 10 is related to the distance between the adjacent nanocarbon tubes 1〇2 and the content of the carbon nanotubes 104 between the carbon nanotubes 102. The greater the distance between the carbon nanotubes 102, the less the content of the carbon nanotubes 104 between the nanocarbon tubes 1〇2, the more the transmittance of the carbon nanotube membranes 1〇 Big. Referring to FIG. 7, in the embodiment of the technical solution, the directly prepared carbon nanotube film 10 has a thickness of 50 nm and a transmittance of 67% or more and 82% or less. The elastic support body 20 has better elasticity. The shape and structure of the elastic support body 20 are not limited, and may be a planar structure or a curved structure. The elastic support body 20 includes one of an elastic rubber, a spring, and a rubber band.
種或幾種。該彈性支撑體2〇可用於支撑並拉伸所述奈米碳 管膜10。 步驟二：將所述至少一奈米碳管膜10至少部分設置在 所述至少一彈性支撑體20。 所述奈米碳管膜1〇可直接設置並貼合在彈性支撑體 20的表面，此時，所述彈性支撑體2〇爲具有一表面的基 體另外’所述奈米碳管膜10也可部分設置在所述彈性支 撑體fL的表面。如鋪設在兩個彈性支撑體20之間。由於 奈米碳管具有極大的比表面積，在凡德瓦爾力的作用下， 16 201020204 該奈米碳管膜ίο本身有很好的黏附性，可直接設置在彈性 支撐體20上。可以理解，爲提高奈米碳管膜1〇與彈性支 撑體20之間的結合力，所述奈米碳管膜1〇也可通過黏結 劑固定於所述彈性支撑體20上。另外，可將所述多個奈米 碳管膜10沿同一方向重叠鋪設，形成一多層奈米碳管獏。 相鄰兩層奈米碳管膜10中的第一奈米碳管的排列方向相 同◊當所述奈米碳管膜爲從一奈米碳管陣列中直接拉取的 奈米碳管膜時，多個奈米碳管膜可沿拉取方向重叠設置。 ❹重叠設置的奈米碳管膜具有較大的厚度，可提高奈米碳管 膜的形變率。 本技術方案實施例中，將拉取獲得的一奈米碳管膜10 直接設置於兩個彈性支撐體20上。請參閱圖6，所述兩個 彈陡支撑體20平行且間隔設置。所述兩個彈性支撑體 均D2方向設置。所述奈米碳管膜1〇通過黏結劑設置在 所述彈性支撐體20表面。該黏結劑爲一層銀膠。所述奈米 ❹碳管膜10沿D1方向的兩端分別固定於該兩個彈性支撑體 2〇上。所述奈米碳管膜10在設置時，奈米碳管膜1〇中的 奈米碳管線102沿一個彈性支撑體2〇至另一個彈性支撑體 20的方向延伸。 步驟三：拉伸該彈性支撑體2〇。 具體地’可通過將上述彈性支撑體2〇固定於一拉伸裝 置（圖未示）中，通過該拉伸裝置拉伸該彈性支撑體2〇。 本技術方案實施例中’可分別將兩個彈性支撑體2()的兩端 分別固定於拉伸裝置上。 17 201020204 所述拉伸速度不限’可根據所要拉伸的奈米碳管膜ίο 具體進仃選擇。拉伸速度太大，則奈米碳管膜10容易發生 •破2。優選地，所述彈性支撑體20的拉伸速度小於10厘 米母移。本技術方案實施例中，所述彈性支撑體的拉伸 速度爲2厘米每秒。 ^所述拉伸方向與至少一層奈米碳管膜10中的奈米碳 &線102的排列方向有關。當所述奈米碳管膜1〇爲直接拉 取獲得的一層奈米碳管膜1〇或沿同一方向重叠設置的多 ❹層奈米碳管膜時，所述拉伸方向爲沿垂直於奈米碳管線 02的方向或垂直於奈米碳管膜1〇的拉取方向即D2方 向0 由於所述至少一奈米碳管膜1〇固定在所述彈性支撑 體20上，故在拉力的作用下，隨著所述彈性支撑體被 拉伸，該奈米碳管膜10也隨之被拉伸。當所述奈米碳管膜 1〇在D2方向上被拉伸時，奈米碳管線1〇2之間的距離發 ❹生變化。具體地，所述奈米碳管線1〇2之間的距離隨奈米 碳管膜ίο形變率的增加而增大。由於碳奈米線1〇2之間有 距離’且奈米碳管線102之間有至少一個奈求碳管1〇4, 故被拉伸過程中，所述奈米碳管線1〇2和其之間的奈米碳 S 104之間可維持凡德瓦爾力連接，並排設置的奈米碳管 線102之間的距離增大。其令，拉伸前所述並排設置的夺 米碳管線102之間的距離大於〇微米且小於1〇微米，拉^ 後並排設置的奈米碳管線102之間的距離最大可達5〇微 米。所述奈米碳管膜10仍維持膜狀結構。當所述多個奈米 18 201020204 碳管膜ίο重叠設置形成一多層太Kind or several. The elastic support 2 can be used to support and stretch the carbon nanotube film 10. Step 2: The at least one carbon nanotube film 10 is at least partially disposed on the at least one elastic support body 20. The carbon nanotube film 1 can be directly disposed and attached to the surface of the elastic support body 20. At this time, the elastic support body 2 is a substrate having a surface, and the carbon nanotube film 10 is also It may be partially disposed on the surface of the elastic support body fL. For example, it is laid between two elastic support bodies 20. Due to the extremely large specific surface area of the carbon nanotubes, under the action of Van der Waals force, the 16 carbon nanotube film ίο itself has good adhesion and can be directly disposed on the elastic support body 20. It is understood that in order to improve the bonding force between the carbon nanotube film 1〇 and the elastic support body 20, the carbon nanotube film 1〇 may also be fixed to the elastic support body 20 by an adhesive. Alternatively, the plurality of carbon nanotube films 10 may be stacked in the same direction to form a plurality of layers of carbon nanotubes. The first carbon nanotubes in the adjacent two layers of carbon nanotube film 10 are arranged in the same direction. When the carbon nanotube film is a carbon nanotube film directly pulled from a carbon nanotube array Multiple carbon nanotube films can be overlapped in the pulling direction. The carbon nanotube film with overlapping 具有 has a large thickness and can improve the deformation rate of the carbon nanotube film. In the embodiment of the technical solution, the one carbon nanotube film 10 obtained by drawing is directly disposed on the two elastic support bodies 20. Referring to Figure 6, the two projectile supports 20 are parallel and spaced apart. The two elastic supports are disposed in the D2 direction. The carbon nanotube film 1 is disposed on the surface of the elastic support 20 by a binder. The binder is a layer of silver glue. Both ends of the carbon nanotube film 10 in the direction D1 are respectively fixed to the two elastic supporting bodies 2''. When the carbon nanotube film 10 is disposed, the nanocarbon line 102 in the carbon nanotube film 1 延伸 extends in the direction of one elastic support 2 〇 to the other elastic support 20. Step 3: Stretch the elastic support 2〇. Specifically, the elastic support body 2 can be stretched by the stretching device by fixing the above-mentioned elastic support body 2 to a stretching device (not shown). In the embodiment of the present invention, both ends of the two elastic supporting bodies 2 () can be respectively fixed to the stretching device. 17 201020204 The stretching speed is not limited to 'depending on the specific carbon nanotube film to be stretched. When the stretching speed is too large, the carbon nanotube film 10 is liable to occur. Preferably, the elastic support 20 has a tensile speed of less than 10 cm. In the embodiment of the technical solution, the elastic support has a stretching speed of 2 cm per second. The stretching direction is related to the arrangement direction of the nanocarbon & line 102 in at least one layer of the carbon nanotube film 10. When the carbon nanotube film 1〇 is a layer of carbon nanotube film obtained by direct drawing or a multi-layered carbon nanotube film disposed in the same direction, the stretching direction is perpendicular to The direction of the nano carbon line 02 or the direction perpendicular to the pulling direction of the carbon nanotube film 1〇, that is, the direction D2 is 0. Since the at least one carbon nanotube film 1〇 is fixed on the elastic support body 20, the pulling force is applied. Under the action of the elastic support, the carbon nanotube film 10 is also stretched. When the carbon nanotube film 1〇 is stretched in the D2 direction, the distance between the nanocarbon lines 1〇2 changes abruptly. Specifically, the distance between the carbon nanotubes 1〇2 increases as the deformation rate of the carbon nanotube film increases. Since there is a distance between the carbon nanowires 1〇2 and at least one carbon nanotube 1〇4 between the nanocarbon pipelines 102, the nanocarbon pipeline 1〇2 and its The Van der Waals force connection between the nanocarbon S 104 can be maintained, and the distance between the side carbon nanotubes 102 arranged side by side increases. Therefore, the distance between the rice-carbon pipelines 102 arranged side by side before stretching is greater than 〇 micrometers and less than 1 〇 micrometer, and the distance between the nano carbon pipelines 102 arranged side by side after pulling is up to 5 〇 micrometers. . The carbon nanotube film 10 still maintains a film-like structure. When the plurality of nanometers 18 201020204 carbon film ίο overlaps to form a multilayer too
膜中的奈米碳管1〇〇分下布更均吕句、、密度=，= :對該多層奈米碳管膜進行拉伸時，可獲得更高的形變 率。所述奈来碳管膜10的形變率小於等於·%，且可基 本維持奈米碳管膜1G的形態。即所述奈米礙管膜1〇可在 原有尺寸的基礎上增加3嫩”本實施财，所述奈米碳 管膜10爲單層奈米碳管膜，拉伸方向爲沿垂直於奈米碳管 線102的方向’即D2方向。所述奈米碳管膜1〇在D2方 向上的形變率可達150〜圖4爲奈来碳管膜1〇拉伸12〇% 時放大500倍的掃描電鏡照片，從圖中可以看出拉伸後的 奈米碳管膜10相對拉伸前的奈米碳管膜10，並排設置的 奈米碳管線102之間的距離變大。從圖7中可以看出，當 形變率爲120%時’所述奈米碳管膜1〇對波長大於19〇奈 米且小於900奈米的光的透光度可達84%至92%。在拉伸 過程中’所述奈米碳管膜10在拉伸方向上的電阻不發生變 化。 進一步地’當形變率小於60%時，所述並排設置的奈 米碳管線102之間的距離最大可達20微米。該拉伸後的奈 米碳管膜10可在反向拉力的作用下逐漸回復爲拉伸前的 奈米碳管膜10。在回復的過程中，所述奈米碳管線102之 間的距離逐漸减小，並排設置的奈米碳管線102之間的距 離逐漸减下。故所述奈米碳管膜10可在拉力的作用下實現 伸縮。所述奈米碳管膜10可廣泛應用於可伸縮的裝置中。 本技術方案實施例提供的奈米碳管膜1〇及其拉伸方 19 201020204 法具有以下優點：其一，所述奈米碳管膜1〇可設置在一彈 性支撑體20上被拉伸，進而製備大面積奈米碳管膜，且該 .奈米碳管膜的尺寸不受生長基底的限制。其二，所述拉伸 .奈米碳管膜10的方法爲通過將所述奈米碳管膜1〇設置在 至少一彈性支撑體2〇上，拉伸該彈性支撑體2〇，該拉伸 方法簡單、成本較低。其三，本技術方案提供的奈米碳管 膜10的拉伸方法避免了採用繁雜的工序和昂貴的設備（如 雷射裝置）對奈米碳管膜10進行後續處理來提高奈米碳管 膜10透光度的步驟，其可廣泛應用於對透光度具有較高要 求的裝置中，如觸摸屏等。其四，由於所述奈米碳管膜1〇 具有較好的拉伸性能，其可在垂直於奈米碳管線1〇2的方 向上被拉伸，故所述奈米碳管膜10可用於彈性可拉伸元件 及設備中。其五，本技術方案拉伸奈米碳管膜1〇的方法有 利於製備大尺寸奈米碳管膜，進而有利於擴大奈米碳管膜 在大尺寸裝置中的應用。 Q 综上所述，本發明確已符合發明專利之要件，遂依法 提出專利申請。惟，以上所述者僅為本發明之較佳實施例， 自不能以此限制本案之申請專利範圍。舉凡習知本案技藝 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。 【圖式簡單說明】 圖1係本技術方案實施例奈米碳管膜的結構示意圖。 圖2係圖1中的局部放大結構示意圖。 圖3係本技術方案實施例拉伸前奈米碳管膜的掃描電 201020204 鏡照片。 圖4係本技術方案實施例拉伸後奈米碳管膜的掃描電 鏡照片。 圖5係本技術方案實施例奈米碳管膜的拉伸方法流程 圖。 圖6係本技術方案實施例奈米碳管膜的拉伸示意圖。 圖7係本技術方案實施例奈米碳管膜拉伸前後透光度 對比示意圖。 ❹【主要元件符號說明】 奈米碳管膜 10 奈米碳管 100 奈米碳管線 102 奈米碳管線之間的奈米碳管 104 間距 106 彈性支撑體 20 ❹ 21The carbon nanotubes in the film are divided into more uniforms, and the density =, =: When the multilayered carbon nanotube film is stretched, a higher deformation rate can be obtained. The strain rate of the carbon nanotube film 10 is equal to or less than %, and the morphology of the carbon nanotube film 1G can be substantially maintained. That is, the nano tube film 1 〇 can be increased by 3 n on the basis of the original size. The carbon nanotube film 10 is a single-layer carbon nanotube film, and the stretching direction is perpendicular to the nai. The direction of the carbon-carbon line 102 is the direction D2. The deformation rate of the carbon nanotube film 1〇 in the D2 direction can reach 150~ Figure 4 is a magnification of 500 times when the carbon nanotube film is stretched by 12〇%. From the scanning electron micrograph, it can be seen from the figure that the stretched carbon nanotube film 10 is relatively larger than the carbon nanotube film 10 before stretching, and the distance between the carbon nanotubes 102 disposed side by side becomes large. It can be seen from 7 that when the deformation rate is 120%, the transmittance of the carbon nanotube film 1 〇 to light having a wavelength greater than 19 〇 nm and less than 900 nm can reach 84% to 92%. The resistance of the carbon nanotube film 10 in the stretching direction does not change during stretching. Further, when the deformation rate is less than 60%, the distance between the side-by-side nanocarbon lines 102 is the largest. Up to 20 microns. The stretched carbon nanotube film 10 can be gradually restored to the carbon nanotube film 10 before stretching under the action of the reverse pulling force. The distance between the carbon nanotubes 102 is gradually reduced, and the distance between the carbon nanotubes 102 disposed side by side is gradually reduced. Therefore, the carbon nanotube film 10 can be expanded and contracted by the tensile force. The carbon nanotube film 10 can be widely used in a retractable device. The carbon nanotube film 1〇 provided by the embodiment of the present technical solution and the stretching method thereof 19 201020204 have the following advantages: The carbon nanotube film 1 can be stretched on an elastic support 20 to prepare a large-area carbon nanotube film, and the size of the carbon nanotube film is not limited by the growth substrate. The method for stretching the carbon nanotube film 10 is to stretch the elastic support body 2 by disposing the carbon nanotube film 1〇 on at least one elastic support body 2〇, the stretching method is simple, The cost is lower. Thirdly, the stretching method of the carbon nanotube film 10 provided by the technical solution avoids the complicated treatment of the carbon nanotube film 10 by complicated processes and expensive equipment (such as laser device) to improve The step of transmittance of the carbon nanotube film 10, which can be widely applied to transmittance Among the devices with higher requirements, such as touch screens, etc. Fourth, since the carbon nanotube film has good tensile properties, it can be pulled in a direction perpendicular to the nanocarbon pipeline 1〇2. Therefore, the carbon nanotube film 10 can be used in elastic stretchable components and equipment. Fifth, the method of stretching the carbon nanotube film of the present invention is advantageous for preparing a large-sized carbon nanotube film. Further, it is advantageous to expand the application of the carbon nanotube film in a large-sized device. Q In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above is only the present invention. The preferred embodiments are not intended to limit the scope of the invention. The equivalents and modifications of the present invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the structure of a carbon nanotube film according to an embodiment of the present technical solution. 2 is a partial enlarged structural view of FIG. 1. 3 is a scanning electron of a carbon nanotube film before stretching in the embodiment of the present technical solution 201020204. Fig. 4 is a scanning electron micrograph of a carbon nanotube film after stretching in the embodiment of the present technical solution. Fig. 5 is a flow chart showing the stretching method of the carbon nanotube film of the embodiment of the present invention. FIG. 6 is a schematic view showing the stretching of a carbon nanotube film according to an embodiment of the present technical solution. Fig. 7 is a schematic view showing the comparison of the transmittance of the carbon nanotube film before and after stretching in the embodiment of the present invention. ❹【Main component symbol description】 Nano carbon nanotube film 10 Carbon nanotubes 100 Nano carbon pipeline 102 Carbon nanotubes between nano carbon pipelines 104 Spacing 106 Elastic support 20 ❹ 21