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疊層壓電有閥式微幫浦設計與製作 林昱秀、鄭江河

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疊層壓電有閥式微幫浦設計與製作 林昱秀、鄭江河

E-mail: 346405@mail.dyu.edu.tw

摘 要

微幫浦系統主要功能是獲得微小流量的精確控制,本文使用疊層式手法將加工後之壓克力零件、閥體和PZT致動器模組按 序組裝。本文中設計兩種不同材料及不同結構之閥體,TypeⅠ為具有四個橋接式結構的電鑄鎳材;TypeⅡ為澆注高分子材 料PDMS之懸臂樑結構,搭配其組裝零件後加以組裝,組裝完成後測量流量及其相關測試。 實驗重點在於探討不同閥體材 料及厚度,在各種頻率及電壓操作下,對微幫浦流率及背壓之影響。以相同的PZT致動器組成兩種不同閥體的性質進行測 試,實驗結果顯示金屬鎳閥體20μm厚時,微幫浦操作電壓在160Vpp、頻率30Hz的正弦波驅動下,最大流量可達每分 鐘48.06ml,最高揚程可達7.5kPa;PDMS閥體600μm厚時,操作電壓在160 Vpp、頻率30Hz的正弦波驅動下,最大流量可 達每分鐘56.88ml,最高揚程可達12kPa。

關鍵詞 : 疊層式、微幫浦、閥門、壓電、電鑄、PDMS

目錄

封面內頁 簽名頁 中文摘要 ………iii 英文摘要 ………

………iv 誌謝 ………v 目錄 ………

………vi 圖目錄 ………ix 表目錄 ………

………xiii 第一章 緒論………1 1.1 前言………1 1.2 研究動機

………2 1.3 文獻回顧………3 第二章 疊層壓電有閥式微幫浦設計概念………

………13 2.1 疊層壓電有閥式微幫浦基本概念………13 2.2 疊層壓電有閥式微幫浦結構尺寸………

………14 2.3 疊層壓電有閥式微幫浦閥體介紹………21 2.3.1 金屬鎳閥體材料………

…… 21 2.3.2 高分子材料PDMS閥體材料………22 2.3.3 不同材料閥體之差異………26 第三章 微幫浦結構元件製作………28 3.1 黃光製程………28 3.2 蝕刻製程………

………29 3.3 電鑄製程………31 3.3 結構元件製作……… 34 3.3.1 閥門艙體層…

………34 3.3.2 TypeⅠ閥體製作………38 3.4 壓電致動器之製作………

…40 3.5 疊層壓電有閥式微幫浦組裝………44 第四章 實驗量測與探討………46 4.1 實 驗量測設備與架設說明………46 4.2 壓電微幫浦測試………48 4.2.1 TypeⅠ之位移測 試………49 4.2.2 TypeⅠ之不同閥體厚度流量測試………54 4.2.3 TypeⅠ之揚程測試…

………59 4.2.4 TypeⅡ之位移測試………60 4.2.5 TypeⅡ之流量測試………

……65 4.2.6 TypeⅡ之揚程測試………69 4.2.7 不同電壓對TypeⅠ和TypeⅡ之流量比較………

…………70 4.3 水溶液黏度對微幫浦流量的影響………73 4.3.1 黏度對TypeⅠ流量影響………

…………74 4.3.2 黏度對TypeⅡ流量影響………75 第五章 結論………77 參考文獻…

………79 參考文獻

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參考文獻

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