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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 楊申語 | |
dc.contributor.author | Cih Cheng | en |
dc.contributor.author | 鄭慈 | zh_TW |
dc.date.accessioned | 2021-06-15T11:52:28Z | - |
dc.date.available | 2019-10-14 | |
dc.date.copyright | 2016-10-14 | |
dc.date.issued | 2016 | |
dc.date.submitted | 2016-08-11 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/49850 | - |
dc.description.abstract | 微熱壓成型技術因其具有低成本、製程簡單等優點,已廣泛應用於製作微結構於高分子基材上,但傳統微熱壓成型需將高分子基材升溫至玻璃轉換溫度(Tg)以上,因此整體製程時間長而影響其量產性。本研究目的為改善傳統微熱壓製程升溫時間過長之問題,使用添加石墨烯之高分子複合材料,利用其優良之導電、導熱性,開發具有快速加熱性質之加熱器,並將加熱器作為熱壓製程中之加熱系統,搭配氣體輔助施壓,提出一氣體輔助快速微熱壓成型技術,以達縮短熱壓製程時間之目的。
本研究首先使用浸塗法將石墨烯複材塗佈於PI基板上以製作加熱器,成功使加熱面積為30x30平方毫米之加熱器在40V之電壓下,達到10秒內升溫至180°C之快速升溫效果。接著使用該快速加熱器於微熱壓製程,配合氣體輔助施壓,成功於3分鐘內將各種微、奈米結構複製於高分子基材上,並製作各結構之成型視窗。最後進一步將製程延伸應用來將各種不同微奈米結構包括微透鏡陣列、V型溝槽、圓柱陣列,分別複製於不同高分子基材包括PC、COP、PLA,且結構面積達50x50平方毫米,平均轉寫率大於97%。本研究證實石墨烯複材加熱氣體輔助壓印能大幅縮短微熱壓成型之製程時間,亦具有廣泛應用性,且該技術符合低成本、操作簡單且節省能源等需求。 | zh_TW |
dc.description.abstract | Hot embossing technique is a low-cost and flexible microfabrication method, which has gained popularity in fabricating micro/nano structures on polymers. But the cycle time is long because the polymers have to be heated above the glass transition temperature by the hot plates. The process needs a breakthrough in reducing the cycle time. In this study, making use of the exceptional thermal and electrical properties of graphene, high-performance heaters utilizing the graphene-polymer composite is proposed and demonstrated. By combining the rapid heating of graphene-polymer composite heaters and the uniform pressing of gas, we present a novel rapid hot embossing technique for replication of micro/nano structures on polymeric substrates.
The graphene-polymer composite heater was first developed. Heating rate of 14°C/s can be achieved with an applied voltage of 44V when the heating area is 30x30 mm^2. Next, rapid heating gas-assisted embossing facility and experiments by utilizing this graphene-polymer composite heater were constructed and carried out. Different micro/nano structures including microlens array, V-cut patterns and cylinder array were successfully replicated respectively on PC, COP and PLA substrates using the innovative process. And the cycle time is reduced to 3 minutes. The forming area is 50x50 mm^2 and the replication rates are above 97%. These results prove the great potential of using the graphene-polymer composite heaters in gas-assisted rapid micro hot embossing technique for replication of micro/nano structures for various applications. | en |
dc.description.provenance | Made available in DSpace on 2021-06-15T11:52:28Z (GMT). No. of bitstreams: 1 ntu-105-R03522722-1.pdf: 9580996 bytes, checksum: 85b33465f1aa6b84389f81929093c8d4 (MD5) Previous issue date: 2016 | en |
dc.description.tableofcontents | 誌謝 i
摘要 ii ABSTRACT iii 目錄 iv 圖目錄 ix 表目錄 xiv 第一章 導論 1 1.1 前言 1 1.2 微熱壓成型技術 2 1.3 氣體輔助微熱壓成型技術 5 1.4 快速加熱技術 7 1.5 石墨烯物性簡介 8 1.5.1 石墨烯性質與製備 8 1.5.2 石墨烯複合材料 13 1.5.3 石墨烯複材加熱原理 16 1.6 研究動機與目標 17 1.7 論文內容與架構 18 第二章 文獻回顧 19 2.1 微熱壓成型技術 19 2.2 氣體輔助微熱壓成型技術 22 2.3 快速加熱技術 25 2.3.1 紅外線快速加熱技術 26 2.3.2 超音波快速加熱技術 29 2.3.3 感應式快速加熱技術 33 2.4 石墨烯相關之快速加熱技術 35 2.4.1 石墨烯微加熱器 35 2.4.2 石墨烯加熱技術應用於微熱壓製程 37 2.4.3 石墨烯複材快速加熱技術 38 2.5 綜合歸納 40 第三章 實驗設置與方法 41 3.1 實驗目的與整體流程規劃 41 3.2 石墨烯複材加熱器製作 43 3.2.1 石墨烯複材與基板 43 3.2.2 石墨烯複材加熱器製作流程 45 3.3 熱壓實驗材料 46 3.3.1 PDMS模具製作 46 3.3.2 電鑄鎳模 49 3.4 氣體輔助熱壓設備 51 3.5 量測設備 53 3.5.1 紅外線熱影像儀 53 3.5.2 熱電偶溫度器 56 3.5.3 表面輪廓儀 56 3.5.4 光學顯微鏡 57 3.5.5 雷射共軛焦顯微鏡 58 3.5.6 掃描式電子顯微鏡 (Scanning Electron Microscope, SEM) 59 第四章 石墨烯複材加熱器之開發 60 4.1 塗佈方式探討 60 4.1.1 噴塗法(spray coating) 61 4.1.2 旋轉塗佈法(spin coating) 62 4.1.3 氣流吹送法 65 4.1.4 高纖維塗佈法 68 4.1.5 浸塗法(dip coating) 70 4.1.6 塗佈方式之統整與比較 73 4.2 塗佈速度對電阻之影響 74 4.3 石墨烯複材加熱器之熱電性質 77 4.3.1 電壓對升溫速率之影響 77 4.3.2 電壓對穩態溫度之影響 79 4.3.3 加熱面積對熱電性質之影響 83 4.4 石墨烯複材加熱器之效能 86 4.4.1 加熱重複性 87 4.4.2 加熱穩定性 88 4.4.3 抗壓性質 89 4.5 結論 91 第五章 石墨烯複材加熱氣輔微熱壓之開發與應用 93 5.1 接觸式快速微熱壓成型 93 5.1.1 設置方法與製程步驟 93 5.1.2 加熱系統之導熱性 95 5.1.3 熱壓成品均勻性探討 96 5.2 非接觸式快速微熱壓成型 100 5.2.1 設置方法與製程步驟 100 5.2.2 加熱系統之導熱性 103 5.2.3 熱壓成品均勻性探討 104 5.3 奈微米結構之熱壓印參數探討 107 5.3.1 實驗設置 108 5.3.2 微米結構—微透鏡陣列 109 5.3.3 微米結構—V型溝槽 110 5.3.4 次微米結構—圓柱陣列 112 5.3.5 奈米結構—奈米球 114 5.4 大面積結構壓印於不同高分子材料 120 5.4.1 微透鏡陣列壓印於聚碳酸酯 121 5.4.2 V型溝槽壓印於環烯烴聚合物 124 5.4.3 圓柱陣列壓印於聚乳酸 127 5.5 結論 129 第六章 總結與未來展望 131 6.1 研究總結 131 6.2 未來展望 133 參考文獻 134 | |
dc.language.iso | zh-TW | |
dc.title | 石墨烯複材加熱器應用於氣體輔助微熱壓製程 | zh_TW |
dc.title | Application of Graphene-polymer Composite Heaters in Gas-assisted Micro Hot Embossing Process | en |
dc.type | Thesis | |
dc.date.schoolyear | 104-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 張復瑜,粘世智 | |
dc.subject.keyword | 快速加熱,微熱壓技術,石墨烯,複合材料,微結構, | zh_TW |
dc.subject.keyword | rapid heating,micro hot embossing,graphene,composite,microstructure, | en |
dc.relation.page | 137 | |
dc.identifier.doi | 10.6342/NTU201602239 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2016-08-11 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
顯示於系所單位: | 機械工程學系 |
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