TWI494952B - 導電膜製造方法 - Google Patents
導電膜製造方法 Download PDFInfo
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- TWI494952B TWI494952B TW099113727A TW99113727A TWI494952B TW I494952 B TWI494952 B TW I494952B TW 099113727 A TW099113727 A TW 099113727A TW 99113727 A TW99113727 A TW 99113727A TW I494952 B TWI494952 B TW I494952B
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- 238000000034 method Methods 0.000 title claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 85
- 239000002041 carbon nanotube Substances 0.000 claims description 84
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 84
- 239000002238 carbon nanotube film Substances 0.000 claims description 37
- 239000002245 particle Substances 0.000 claims description 32
- 239000011347 resin Substances 0.000 claims description 27
- 229920005989 resin Polymers 0.000 claims description 27
- 239000000758 substrate Substances 0.000 claims description 24
- 239000007864 aqueous solution Substances 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 10
- 239000002105 nanoparticle Substances 0.000 claims description 5
- 229910001020 Au alloy Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- -1 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
- B32B2037/243—Coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/164—Drying
- B32B2038/166—Removing moisture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/202—Conductive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/02—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2313/00—Elements other than metals
- B32B2313/04—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
Description
本發明係關於一種導電膜的製造方法。
奈米碳管因具有導電性而被應用在導電領域。而奈米碳管在該領域的具體應用形式為導電膜。習知的使用奈米碳管的導電膜包括網狀結構的奈米碳管薄膜,惟,該網狀結構的奈米碳管薄膜存在網洞,因此,習知的使用奈米碳管的導電膜的導電率較低。
有鑑於此,有必要提供一種導電膜的製造方法。
一種導電膜的製造方法,其包括:提供基板及奈米碳管薄膜;將該奈米碳管薄膜設置在該基板上以形成奈米碳管網狀結構層,該奈米碳管網狀結構層具有複數網洞;將該奈米碳管網狀結構層的溫度保持在7至9攝氏度範圍內,並向該奈米碳管網狀結構層加入奈米導電粒子水溶液並使該水溶液分散於該奈米碳管網狀結構層,該奈米導電粒子水溶液包括複數奈米導電粒子;及使該奈米碳管網狀結構層的溫度上升至24至26攝氏度範圍內並乾燥該奈米碳管網狀結構層,使該複數奈米導電粒子填充該複數網
洞以得到該導電膜。
上述導電膜,藉由在奈米碳管網狀結構層的網洞填充奈米導電粒子,提高了導電率。
上述導電膜的製造方法,利用奈米碳管在25攝氏度附近時疏水的特性及在8攝氏度附近時親水的特性來使奈米導電粒子填充至網洞中,以達到提高導電率的效果。
100‧‧‧導電膜
10‧‧‧奈米碳管網狀結構層
20‧‧‧奈米導電粒子
102‧‧‧網洞
200‧‧‧基板
300‧‧‧紫外線硬化樹酯層
400‧‧‧塗佈工具
402‧‧‧固定軸
404‧‧‧連接部
406‧‧‧轉動軸
408‧‧‧滾輪
500‧‧‧奈米導電粒子水溶液
圖1為本發明第一實施方式提供的一種導電膜的部分示意圖。
圖2A至2B為圖1中導電膜的製造方法的示意流程圖。
以下結合附圖,對本發明作進一步詳細說明。
請參閱圖1,本發明第一實施方式提供的一種導電膜100包括奈米碳管網狀結構層10及複數奈米導電粒子20。
該奈米碳管網狀結構層10具有複數網洞102。該複數導電粒子20填充於該複數網洞102。可以理解,每個網洞102所填充的導電粒子20的個數視乎該網洞102的尺寸及該導電粒子20的粒徑。該導電粒子20為金、銀、銅、鋁或上述兩種或兩種以上金屬所形成的合金。由於導電膜100在奈米碳管網狀結構層10的網洞102填充奈米導電粒子20,因此,該導電膜100的導電率提高了。
該奈米碳管網狀結構層10的製備方法包括直接生長法、絮化法、碾壓法或拉膜法等方法。所述直接生長法為用化學氣相沈積法於一基板上生長獲得奈米碳管薄膜,該奈米碳管薄膜為無序或有序奈米碳管薄膜,所述無序奈米碳管薄膜中包括複數無序排列且相
互交織的奈米碳管,該無序奈米碳管薄膜可形成該奈米碳管網狀結構層10。所述有序奈米碳管薄膜中包括複數相互平行的奈米碳管,該奈米碳管網狀結構層10可藉由將至少兩該有序奈米碳管薄膜不平行地相互疊合而形成。相鄰的兩奈米碳管薄膜中的奈米碳管排列方向具有一交叉角度α,0°<α≦90°,具體可依據實際需求製備。相鄰兩個奈米碳管薄膜之間藉由凡德瓦爾斯力(Van Der Waals Force)緊密結合。
所述絮化法製備奈米碳管薄膜包括以下步驟:將直接生長得到的奈米碳管加入到溶劑中並進行絮化處理獲得奈米碳管絮狀結構;以及將上述奈米碳管絮狀結構從溶劑中分離,並對該奈米碳管絮狀結構定型處理以獲得奈米碳管薄膜,該奈米碳管薄膜為無序奈米碳管薄膜,且包括複數相互纏繞且各向同性的奈米碳管。該無序奈米碳管薄膜可形成該奈米碳管網狀結構層10。
所述碾壓法製備奈米碳管薄膜包括以下步驟:提供一奈米碳管陣列形成於一基底上;以及提供一施壓裝置擠壓上述奈米碳管陣列,從而得到奈米碳管薄膜,該奈米碳管薄膜為有序奈米碳管薄膜,且包括複數沿一個或複數方向擇優取向排列的奈米碳管。該奈米碳管網狀結構層10可藉由將至少兩該有序奈米碳管薄膜不平行地相互疊合而形成。
所述拉膜法製備奈米碳管薄膜包括以下步驟:提供一超順排奈米碳管陣列於一個基底上;採用拉伸工具(如膠帶、鑷子等可將複數奈米碳管固定並拉出的工具)從奈米碳管陣列中拉取以獲得奈米碳管薄膜。該奈米碳管薄膜為有序奈米碳管薄膜,其包括複數相互平行的奈米碳管,該奈米碳管網狀結構層10可藉由將至少兩
該有序奈米碳管薄膜不平行地相互疊合而形成。
請參圖2A-2B,本發明第二實施方式提供一種上述導電膜100的製造方法的示意圖。該方法包括以下步驟:A)提供基板及奈米碳管薄膜;B)於該基板設置紫外線硬化樹酯層;C)將該奈米碳管薄膜設置在該紫外線硬化樹酯層上以形成奈米碳管網狀結構層,該奈米碳管網狀結構層具有複數網洞;D)固化該紫外線硬化樹酯層使該紫外線硬化樹酯層固定該奈米碳管網狀結構層;E)將該奈米碳管網狀結構層的溫度保持在7至9攝氏度範圍內,並向該奈米碳管網狀結構層加入奈米導電粒子水溶液並使該水溶液分散於該奈米碳管網狀結構層,該奈米導電粒子水溶液包括複數奈米導電粒子;及F)使該奈米碳管網狀結構層的溫度上升至24至26攝氏度範圍內並乾燥該奈米碳管網狀結構層,使該複數奈米導電粒子填充該複數網洞以得到該導電膜。
在步驟A中,該基板200的材料為聚對苯二甲酸乙二醇酯(Polyethylene Terephthalate,PET)。基板200可製成內凹形狀以方便後續水溶液可在基板200內來回流動以增加接觸面積並防止水溶液外漏,本實施方式中,基板200的厚度約為1毫米。該奈米碳管薄膜可藉由第一實施方式的方法製備,在此不再贅述。
在步驟B中,該紫外線硬化樹酯層300的厚度為3-5微米。由於紫外線硬化樹酯層300沿著基板200表面塗佈,因此,紫外線硬化樹酯層300也呈內凹形狀。
在步驟C中,塗佈工具400被使用。該塗佈工具400包括固定軸402,連接部404,轉動軸406及滾輪408。固定軸402與連接部404固接。連接部404大致呈空心的球體。轉動軸406可轉動地連接在連
接部404。固定軸402與轉動軸406分別連接在連接部404的相對兩側。滾輪408與轉動軸406固接,隨著轉動軸406的轉動而轉動。奈米碳管薄膜設置在滾輪408的表面,然後將帶有奈米碳管薄膜的滾輪408在紫外線硬化樹酯層300上來回滾動以將奈米碳管薄膜均勻塗佈在紫外線硬化樹酯層300上。
在步驟D中,利用紫外線照射及烘烤製程以使紫外線硬化樹酯層300固化,從而將奈米碳管網狀結構層固定在基板200上。
在步驟E中,可將帶有奈米碳管網狀結構層的基板200放置於溫度控制裝置內。本實施方式中,較佳地,該溫度控制裝置設定的溫度約為8攝氏度。該奈米導電粒子水溶液500為金、銀、銅、鋁或上述兩種或兩種以上金屬所形成的合金的水溶液。本實施方式中,該奈米導電粒子水溶液500為奈米金粒子水溶液。待奈米碳管網狀結構層10的溫度保持在約8攝氏度時,將奈米導電粒子水溶液500加入內凹形狀的基板200中。在該水溶液500加入的同時,來回滾動滾輪408,使該水溶液500均勻分散於該奈米碳管網狀結構層10。由於奈米碳管在8攝氏度附近時具有親水性,該水溶液500被吸附在奈米碳管網狀結構層10的複數網洞102。
在步驟F中,本實施方式中,較佳地,調整溫度控制裝置的溫度約25攝氏度,當該奈米碳管網狀結構層10的溫度保持在約25攝氏度時,奈米碳管具有疏水性並將水分子趕走只留下奈米導電粒子吸附在奈米碳管網狀結構層10的複數網洞102中。
上述導電膜的製造方法,利用奈米碳管在25攝氏度附近疏水的特性及在8攝氏度附近親水的特性來使奈米導電粒子填充至網洞中,以達到提高導電膜導電率的效果。
本發明第三實施方式還提供一種導電膜的製造方法。該製造方法與第二實施方式的製造方法不同之處在於:形成奈米碳管網狀結構層及固化紫外線樹酯層的步驟不同。
在本實施方式中,該方法在步驟B):於該基板塗佈紫外線硬化樹酯層後,包括:C1)在該紫外線硬化樹酯層300上形成第一奈米碳管網狀結構層;C2)固化該紫外線硬化樹酯層300使該紫外線硬化樹酯層300固定該第一奈米碳管網狀結構層;及C3)在該第一奈米碳管網狀結構層上形成第二奈米碳管網狀結構層以使該第一奈米碳管網狀結構層及該第二奈米碳管網狀結構層形成該奈米碳管網狀結構層。
上步驟C1中,該第一奈米碳管網狀結構層的厚度約為50~100奈米。在步驟C2中,利用紫外線照射及烘烤製程以使紫外線硬化樹酯層300固化,從而將第一奈米碳管網狀結構層固定在基板200上。在步驟C3中,該第二奈米碳管網狀結構層的厚度約為1~2微米。第一奈米碳管網狀結構層與第二奈米碳管網狀結構層之間藉由凡德瓦爾斯力(Van Der Waals Force)緊密結合。
在紫外線硬化樹酯層上固化前後分別形成的第一奈米碳管網狀結構層及第二奈米碳管網狀結構層,使得更多的奈米碳管網狀結構能從紫外線硬化樹酯層暴露出來,以在後續步驟中吸附更多的水溶液及奈米導電粒子,有效地提高導電率。
另外,本發明還包括其它實施方式的導電膜的製造方法。在這些實施方式的製造方法中,形成紫外線硬化樹酯層300之步驟可以省略,因奈米碳管具有相當大的比表面積(Specific Area),故奈米碳管薄膜具有黏性,可直接黏於基板200上。
綜上所述,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方式,自不能以此限制本案之申請專利範圍。舉凡熟悉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內。
100‧‧‧導電膜
10‧‧‧奈米碳管網狀結構層
20‧‧‧奈米導電粒子
102‧‧‧網洞
Claims (8)
- 一種導電膜的製造方法,其包括:提供基板及奈米碳管薄膜;將該奈米碳管薄膜設置在該基板上以形成奈米碳管網狀結構層,該奈米碳管網狀結構層具有複數網洞;將該奈米碳管網狀結構層的溫度保持在7至9攝氏度範圍內,並向該奈米碳管網狀結構層加入奈米導電粒子水溶液並使該水溶液分散於該奈米碳管網狀結構層,該奈米導電粒子水溶液包括複數奈米導電粒子;及使該奈米碳管網狀結構層的溫度上升至24至26攝氏度範圍內並乾燥該奈米碳管網狀結構層,使該複數奈米導電粒子填充該複數網洞以得到該導電膜。
- 如申請專利範圍第1項所述之導電膜的製造方法,其中,在將該奈米碳管薄膜設置在該基板前還包括:於該基板設置紫外線硬化樹酯層,該奈米碳管網狀結構層形成在該紫外線硬化樹酯層上。
- 如申請專利範圍第2項所述之導電膜的製造方法,其中,在將該奈米碳管網狀結構層的溫度保持在7至9攝氏度範圍內前還包括:固化該紫外線硬化樹酯層使該紫外線硬化樹酯層固定該奈米碳管網狀結構層。
- 如申請專利範圍第2項所述之導電膜的製造方法,其中,該奈米碳管網狀結構層形成在該紫外線硬化樹酯層上包括:在該紫外線硬化樹酯層上形成第一奈米碳管網狀結構層;固化該紫外線硬化樹酯層使該紫外線硬化樹酯層固定該第一奈米碳管網狀結構層;及在該第一奈米碳管網狀結構層上形成第二奈米碳管網狀結構層以使該第 一奈米碳管網狀結構層及該第二奈米碳管網狀結構層形成該奈米碳管網狀結構層。
- 如申請專利範圍第1項所述之導電膜的製造方法,其中,該基板的材料為聚對苯二甲酸乙二醇酯。
- 如申請專利範圍第1項所述之導電膜的製造方法,其中,該奈米導電粒子水溶液為金、銀、銅、鋁或上述兩種或兩種以上金屬所形成的合金的水溶液。
- 如申請專利範圍第1項所述之導電膜的製造方法,其中,將該奈米碳管網狀結構層的溫度保持在8攝氏度。
- 如申請專利範圍第1項所述之導電膜的製造方法,其中,使該奈米碳管網狀結構層的溫度上升至25攝氏度。
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