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研究生:邢雅棠
研究生(外文):Shyng Yat-Tarng
論文名稱:聚對二唑苯(PBO)高分子纖維表面處理及其複合材料介面特性之研究
論文名稱(外文):Investigation on Surface Treatment of Polybenzoxazole (PBO) Polymer Fiber and Interface of Its Composite Material
指導教授:吳國梅
指導教授(外文):Wu Gwo-Mei
學位類別:碩士
校院名稱:長庚大學
系所名稱:化學工程研究所
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:2001
畢業學年度:89
語文別:中文
論文頁數:139
中文關鍵詞:聚對二唑苯纖維表面處理複合材料介面動態接觸角表面自由能
外文關鍵詞:PBOSurface TreatmentComposite MaterialInterfaceDynamic Conyact AngleSurface Free Energy
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本研究以聚對二唑苯Polybenzoxazole(以下簡稱PBO)纖維為材料,透過化學藥品浸泡、靜電處理以及電漿蝕刻等方式對纖維進行表面處理,其目的在於改善PBO高分子纖維之表面性質,加強與環氧樹脂之結合性,以利未來PBO高分子纖維/環氧樹脂複合材料之開發及應用。
化學表面處理所採用之藥劑為甲磺酸 (methanesulfonic acid, MSA) 以及氫氧化鈉 (sodium hydroxide, NaOH) 溶液,並且以溶液濃度、處理溫度以及處理時間為控制條件。靜電表面處理以靜電電壓為控制條件,而電漿表面處理則以處理時間為控制條件。
纖維本身之表面性質可由動態接觸角直接得知,並且藉由公式換算可得出纖維材料本身之表面自由能。由實驗結果可知,表面處理可降低動態接觸角,並且能有效提高PBO高分子纖維之表面自由能。
纖維機械性質則利用拉力試驗機進行測試。根據測試結果得知,纖維經表面處理後,機械性質會有些微下降。主要原因應為表面處理時表面侵蝕所造成,但與纖維表面自由能之提昇相較之下,些微之機械性質下降應為合理可接受之結果。而樹脂微粒抽出試驗亦顯示,經過表面處理之PBO高分子纖維與環氧樹脂微粒間之介面具有較高之介面強力。
另一方面,利用掃描式電子顯微鏡,針對PBO高分子纖維之表面型態及其樹脂微粒抽出樣本表面加以觀察;此外,PBO高分子纖維之表面元素組成,則利用ESCA表面元素分析加以檢驗,並且針對經過表面處理之PBO高分子纖維,其表面性質是否會因儲藏時間及環境不同而有所改變,利用動態接觸角量測系統加以追蹤檢測。
In this investigation, the Polybenzoxazole (PBO) polymer fiber samples have been surface treated using methansulfonic acid (MSA) and sodium hydroxide (NaOH) solutions. Static electricity and plasma surface treatment were also used to improve the surface properties of PBO fibers. This would help the manufacture and application of its composites.
By changing the conditions of surface treatment, such as the concentration, time duration, temperature of chemicals, the static KV value and the time duration of plasma, the interface and mechanical properties of PBO polymer fiber were carefully tested and analysed.
The surface dynamic contact angle and the surface free energy were measured by a Cahn DCA-322 dynamic contact angle analyzer. The results indicated an obvious relationship among the dynamic contact angle, surface free energy and the degree of surface treatment. Generally speaking, the surface free energy increased with the degree of the surface treatment.
The mechanical properties of treated PBO fiber were tested by MTS Qtest / 7L system. According to the results, the mechanical properties were slightly decreased. However, the increase of surface free energy should compensate for the loss in mechanical properties and provide a better way to manufacture its composite.
On the other hand, the surface of treated PBO polymer fiber and the interface of microbond pull-out sample were observed by scanning electron microscope, and the element composition of the surface of treated PBO fiber analysed by a ESCA system, and finally, the surface free energy tested by the dynamic contact angle system in order to better understand if the storages condition would affect the surface free energy.
目 錄
中文摘要………………………………………………………..I
英文摘要……………………………………………………….II
誌 謝……………………………………………………...III
目 錄……………………………………………………...Ⅳ
圖 目 錄……………………………………………………...Ⅶ
表 目 錄…………………………………………………ⅩⅡ
第 一 章 緒論………………………………………………1
第 二 章 理論與文獻回顧…………………………………6
2-1 材料簡介…………………………………………………………6
2-1-1 PBO纖維簡介………………………………………………6
2-1-2 環氧樹脂簡介……………………………………………...9
2-2 纖維-樹脂介面………………………………………………..11
2-2-1 纖維-樹脂介面接著理論………………………………12
2-3 表面處理………………………………………………………15
2-3-1 表面處理簡介…………………………………………….15
2-3-2 化學表面處理……………………………………………17
2-3-3 靜電表面處理…………………………………………….18
2-3-3-1 放電原理及型態…………………………………18
2-3-3-2 尖端放電…………………………………………20
2-3-4 電漿表面處理……………………………………………22
2-3-4-1 電漿簡介…………………………………………22
2-3-4-2 電漿分類…………………………………………23
2-3-4-3 電漿技術…………………………………………24
2-3-4-4 輝光放電…………………………………………26
2-3-4-5 高分子材料表面之電漿作用……………………29
2-4 複合材料之破壞………………………………………………..31
2-4-1 破壞理論………………………………………………….31
2-4-2 纖維複合材料破壞機構…………………………………32
第 三 章 研究方法………………………………………….35
3-1 材料與藥品……………………………………………………..35
3-2 儀器設備………………………………………………………..35
3-3 實驗流程………………………………………………………36
3-3-1 PBO纖維表面處理………………………………………..36
3-3-2 纖維複合材料機械性質探討……………………………37
3-4 實驗步驟………………………………………………………..38
3-4-1 表面處理………………………………………………….38
3-4-1-1 PBO纖維前處理…………………………………38
3-4-1-2 化學表面處理法…………………………………38
3-4-1-3 靜電表面處理……………………………………39
3-4-1-4 電漿表面處理……………………………………40
3-4-2 PBO纖維表面檢測………………………………………..41
3-4-2-1 DCA 法…………………………………………41
3-4-2-2 電子能譜儀(ESCA)分析……………………….43
3-4-2-3 表面型態觀察(SEM)…………………………44
3-4-3 纖維及複合材料機械性質探討………………………….44
3-4-3-1 單一纖維抗張強度測試………………………………..44
3-4-3-2 纖維樹脂微粒Pull-Out測試…………………………...47
第 四 章 結果與討論……………………………………….50
4-1 纖維表面處理…………………………………………………..50
4-1-1 化學表面處理………………………………………….50
4-1-2 靜電表面處理…………………………………………….65
4-1-3 電漿表面處理…………………………………………….68
4-2 電子能譜儀(ESCA)表面元素分析…………………………...72
4-2-1 化學表面處理…………………………………………….72
4-3 PBO纖維之機械性質…………………………………………77
4-3-1 化學表面處理…………………………………………….78
4-3-2 靜電表面處理…………………………………………….87
4-3-3 電漿表面處理…………………………………………….90
4-4 Microbond Fiber Pull-Out 測試………………………………93
4-4-1 化學表面處理…………………………………………….93
4-4-2 靜電表面處理…………………………………………….98
4-4-3 電漿表面處理…………………………………………100
4-5 SEM纖維表面型態觀察………………………………………102
4-5-1 化學表面處理…………………………………………...102
4-5-2 靜電表面處理…………………………………………...116
4-5-3 電漿表面處理…………………………………………...118
4-6 Pull-Out樣本SEM表面型態觀察…………………………….120
4-6-1 化學表面處理…………………………………………121
4-6-2 靜電表面處理…………………………………………...122
4-6-3 電漿表面處理…………………………………………...123
4-7 表面處理之耐久度測試……………………………………....125
4-7-1 化學表面處理…………………………………………125
4-7-2 靜電表面處理…………………………………………...130
4-7-3 電漿表面處理…………………………………………...131
第 五 章 結 論…………………………………………...132
第 六 章 未來方向及建議………………………………135
參 考 文 獻………………………………………………136
參 考 文 獻
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