基於Ti3C2Tx MXene/PVP/壓電纖維多層嵌入積層製造的TPMS墊片之自供電火災報警系統

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郭仲維(Zhong-Wei Guo) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

基於Ti3C2Tx MXene/PVP/壓電纖維多層嵌入積層製造的TPMS墊片之自供電火災報警系統
(Self-powered fire alarm system based on Ti3C2Tx MXene/PVP/ Piezoelectric fibers Multilayers embedded with additively manufactured TPMS spacers)

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至系統瀏覽論文 (2029-7-1以後開放)

摘要(中)

本研究提出了一種創新概念，使用近場靜電紡絲（NFES）技術來創建一個自供電的循環火災警報傳感器（MPSFS）。這項技術結合了聚偏二氟乙烯-三氟乙烯（PVDF-TrFE）奈米纖維和柔性印刷電路板（FPCBs），並將其封裝在聚二甲基矽氧烷（PDMS）中，形成一個壓電奈米發電機（PENG）系統。這個系統隨後與Ti3C2Tx MXene/PVP薄膜整合，並添加了TPMS結構之墊片，以提高奈米發電機的輸出效率，創造一個火災警報傳感器。
我們展示了Ti3C2Tx MXene/PVP材料作為火災傳感器的潛力，因其柔韌性、優異的阻燃性和電阻變化特性。由於PVP分子和MXene片層之間的共價鍵，這種基於MXene的薄膜具有高阻燃性，使其適用於敏感且可重複使用的火災警報。通過熱氧化處理，MXene薄膜轉變為魚鱗狀的C/N混合二氧化鈦網絡，使其在持續火焰暴露下能快速激發電子，實現超快火災警報響應（約3.0秒）和循環火災警報功能。TPMS結構，作為奈米發電機和MXene/PVP薄膜之間的墊片，能輕鬆調整機械剛度以增強PENG性能。通過可控地調整參數生成不同厚度的TPMS結構，並透過壓縮測試找出作為MPSFS墊片的最佳設計，發現0.2 mm、0.3 mm和0.4 mm厚度中，0.2 mm厚度具有最低的彈性模量。這使得在壓縮奈米發電機以充電時能達到最大的變形度，並通過隨後的奈米發電機電壓輸出測試進一步驗證了這一發現。因此，它確保了MPSFS的充電性能。
總結而言，這項研究提出了一種創新方法，使用壓電奈米發電機（PENGs）、MXene/PVP薄膜和三重周期最小曲面（TPMS）結構墊片，創建了一個小型、自供電的火災警報系統，實現了高效的能量收集和火災監控。MXene/PVP薄膜在火災響應中提供了優異的阻燃性和可重複使用性，而TPMS結構的引入不僅增強了系統的機械強度，還由於其固有的彈性提高了奈米發電機的充電效率。這一創新系統顯著降低了火災風險，並展示了在推進消防技術方面的巨大潛力和應用前景。

摘要(英)

This study proposes an innovative concept of using Near-Field Electrospinning (NFES) technology to create a self-powered cyclic fire alarm sensor (MPSFS). This technology combines polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) nanofibers with flexible printed circuit boards (FPCBs), encapsulating them in polydimethylsiloxane (PDMS) to form a piezoelectric nanogenerator (PENG) system. This system is then integrated with Ti3C2Tx MXene/PVP and TPMS structure spacers are added to enhance the output efficiency of the nanogenerator, creating a fire alarm sensor.
We demonstrated the potential of Ti3C2Tx MXene/PVP materials as fire sensors due to their flexibility, excellent flame retardancy, and resistance change characteristics. The MXene-based film, owing to covalent bonds between PVP molecules and MXene sheets, exhibits high flame retardancy, making it suitable for sensitive and reusable fire alarms. Through thermal oxidation treatment, the MXene film transforms into a fish-scale-like C/N mixed titanium dioxide network, enabling it to quickly excite electrons under continuous flame exposure, achieving ultra-fast fire alarm response (about 3.0 seconds) and cyclic fire alarm function. A triply periodic minimal surface (TPMS) structure, which is invariant under a rank-3 lattice of translations and can be easily tunes the mechanical stiffness to enhance the PENG performance, is added as a spacer between the nanogenerator and the MXene/PVP film. By controllably adjusting parameters to generate TPMS structures of different thicknesses and subsequently using compression tests to find the optimal design for use as a spacer in the MPSFS, it was found that 0.2 mm, 0.3 mm, and 0.4 mm thicknesses resulted in 0.2 mm being the thickness with the lowest elastic modulus. This allows for the greatest degree of deformation when pressing the nanogenerator to charge it, and this finding was further validated through subsequent voltage output tests of the nanogenerator with the addition of spacers. Thus, it ensures the charging performance of the MPSFS.
In summary, this study proposes an innovative method to create a small, self-powered fire alarm system using piezoelectric nanogenerators (PENGs), MXene/PVP films, and triply periodic minimal surface (TPMS) structure spacers, achieving efficient energy harvesting and fire monitoring. The MXene/PVP films provide excellent flame retardancy and reusability in fire response, while the introduction of TPMS structures not only enhances the mechanical strength of the system but also improves the charging efficiency of the nanogenerator due to their inherent elasticity. This innovative system significantly reduces fire risk and demonstrates great potential and application prospects in advancing fire safety technology.

關鍵字(中)

★ 近場電紡織技術(NFES)
★ PVDF-TrFE微奈米纖維
★ TPMS結構
★ 自供能循環火災報警傳感器 (MPSFS)
★ Ti3C2Tx MXene

關鍵字(英)

★ Near-field electrospinning (NFES)
★ Poly(vinylidenefluoride-co-trifluoroethylene) (PVDF-TrFE)
★ TPMS structure
★ MXene/PVP self-powered fire sensor
★ Ti3C2Tx MXene

論文目次

摘要 I
Abstract III
致謝 V
目錄 VI
圖表目錄 VIII
第一章緒論 1
1.1 前言 1
1.2 研究動機與目的 2
1.3 論文大致架構 3
第二章文獻回顧 5
2.1 壓電效應 5
2.1.1. 正壓電效應 (Direct Piezoelectric Effect) 6
2.1.2. 逆壓電效應 (Converse Piezoelectric Effect) 7
2.2 具壓電性質之材料 8
2.2.1. 壓電材料種類 8
2.2.2. 壓電材料操作模式 9
2.3 壓電聚合物 11
2.4 近場電紡織技術 14
2.4.1. 近場電紡織技術背景 14
2.4.2. 近電紡織技術原理 14
2.5 奈米發電機 17
2.5.1. 壓電奈米發電機(Piezoelectric Nanogenerator) 17
2.6 Ti3C2Tx MXene 19
2.7 聚乙烯吡咯烷酮PVP 20
2.8 MXene/PVP 21
2.9聚二甲基矽氧烷(PDMS) 22
2.10三重周期最小曲面TPMS (Triply periodic minimal surface)結構 23
2.11 LCD (Liquid Crystal Display)光固化3D列印 25
2.12各火災感測器性能及表徵比較 27
第三章基於Ti3C2Tx MXene/PVP/壓電纖維多層嵌入積層製造的TPMS結構墊片之自供電火災報警系統 28
3.1導論 28
3.2實驗方法及步驟 29
3.2.1 電紡絲製作方法及材料 29
3.2.2 Ti3C2Tx MXene /PVP之多層膜製備 31
3.2.3 TPMS結構設計 32
3.2.4 量測設備及應用 34
3.3結果與討論 35
3.4補充資料 53
第四章結論 55
第五章未來展望 57
參考文獻 58
實驗儀器 64

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指導教授

傅尹坤(Yiin Kuen Fuh)

審核日期

2024-8-9

推文