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研究生:張為程
研究生(外文):Chang,Wei-Cheng
論文名稱:聚酯PBT與尼龍PA6材料應用於高壓油管之實務問題探討
論文名稱(外文):Exploration of Some Practical Problems of Polyester PBT and Polyamide PA6 Used in Hydraulic Brake Hoses
指導教授:林智汶
指導教授(外文):Lin,Chi-Wen
口試委員:林智汶林彥文吳秋昌
口試委員(外文):Lin,Chi-WenLin,Yen-WenWu,Chiou-Chang
口試日期:2020-07-29
學位類別:碩士
校院名稱:國立雲林科技大學
系所名稱:化學工程與材料工程系
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:2020
畢業學年度:108
語文別:中文
論文頁數:130
中文關鍵詞:液壓制動軟管水解老化爆破強度
外文關鍵詞:hydraulic brake hoseshydrolysis agingburst strength
相關次數:
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  • 收藏至我的研究室書目清單書目收藏:0
本研究首先探討液壓制動管件材質聚酯PBT及聚醯胺尼龍6水解老化問題,並探討添加碳二亞胺(Carbodiimide)於聚酯PBT中以降低管件產品水解老化之威脅。碳二亞胺效能評估方法是透過水解反應所產生之羧酸基滴定,熔融指數(Melt index, MI),與動態機械分析(Dynamic Mechanical Analyzer,DMA),從實驗結果發現,聚酯PBT透過添加碳二亞胺能有效降低特定條件下水解老化所產生之羧酸基濃度,且儲存模數與tanδ無明顯變化。
另外,本研究亦開發具可撓性之尼龍6以應用於液壓制動軟管。為了改善尼龍6與彈性體之間相容性的問題,選用馬來酸酐化的三元乙丙橡膠(EPDM-g-MA)及聚烯烴彈性體(POE-g-MA)與尼龍6分別共混製備二元複合材料,及PA6 / HDPE / EPDM-g-MA三元共混物。這些PA6熱塑性彈性體並依ASTM(American Society for Testing and Materials)標準與SAE(Society of Automotive Engineers) 分別進行機械性質(抗拉強度、衝擊強度、彎曲強度、爆破強度等)測試,探討不同橡塑組成對熱塑性彈性體之性能影響。實驗結果發現,添加馬來酸酐化的彈性體能提升PA6之衝擊強度,但卻也犧牲了一定程度的抗拉強度,彎曲強度,與爆破強度。而若未使用馬來酸酐化的彈性體做為相容劑時,各項機械性質大幅下降。於掃描式電子顯微鏡(Scanning Electron Microscope,SEM)證實馬來酸酐化的彈性體能提升界面相容性,從而提升機械強度。

This research first explored the hydrolysis aging of polyester PBT and polyamide nylon 6 for hydraulic brake pipe fittings, and explored the addition of carbodiimide to polyester PBT to reduce the threat of hydrolysis aging of pipe fittings. The performance evaluation method of carbodiimide is through the titration of carboxylic acid groups produced by the hydrolysis reaction, melt index (MI), and dynamic mechanical analyzer (DMA). From the experimental results, it is found that polyester PBT is added Carbodiimide can effectively reduce the concentration of carboxylic acid groups produced by hydrolysis aging under specific conditions, and there is no significant change in storage modulus and tanδ.
In addition, this research has also developed flexible nylon 6 for use in hydraulic brake hoses. In order to improve the compatibility between nylon 6 and elastomers, maleic anhydride ethylene propylene rubber (EPDM-g-MA) and polyolefin elastomer (POE-g-MA) are used together with nylon 6 respectively. Mixed to prepare binary composites and PA6 / HDPE / EPDM-g-MA ternary blends. These PA6 thermoplastic elastomers are tested for mechanical properties (tensile strength, impact strength, flexural strength, burst strength, etc.) in accordance with ASTM (American Society for Testing and Materials) standards and SAE (Society of Automotive Engineers), and discuss different rubbers and plastics. The composition affects the properties of the thermoplastic elastomer. The experimental results found that the addition of maleic anhydride elastomer can increase the impact strength of PA6, but it also sacrifices a certain degree of tensile strength, flexural strength, and burst strength. If the maleic anhydride elastomer is not used as the compatibilizer, the mechanical properties are greatly reduced. The scanning electron microscope (scanning electron microscope, SEM) confirmed that the maleic anhydride elastomer can improve the interface compatibility, thereby enhancing the mechanical strength.

摘要 i
Abstract ii
誌謝 iv
目錄 v
表目錄 vii
圖目錄 ix
第一章 緒論 1
1.1 前言 1
1.2 纖維強化塑膠管件於液壓之應用 2
1.3 液壓制動器工作原理 3
1.4 液壓應用之纖維強化塑膠管件常見材料 4
1.5 液壓應用塑膠管件之水分傳輸 9
1.6 內部壓力與壓力管件變形 11
第二章 文獻回顧 14
2.1 聚酯類&尼龍類材質之水解老化 14
2.2 抗水解劑之種類與效能 19
2.3 聚酯類&尼龍類材質之吸濕現象與對加工之影響 26
2.4 聚酯類&尼龍類材質之含水率與對物性之影響 32
2.5 撓曲性尼龍及增韌技術 34
2.6 界面相容劑對熱塑性彈性體之重要性 44
2.7 研究動機 49
第三章 實驗方法與步驟 50
3.1 實驗藥品 50
3.2 實驗儀器與設備 51
3.3 實驗儀器與設備簡介 52
3.4 實驗方法 59
第四章 結果與討論 67
4.1 聚酯PBT與尼龍6的水解老化之物性失效分析 67
4.2 抗水解劑效能分析 74
4.3 尼龍6彈性體之機械性質分析 78
4.4 馬來酸酐化彈性體改性尼龍6基材之機械性質分析 89
4.5 表面型態分析 94
4.6 尼龍6彈性體之液壓軟管成品測試 99
第五章 結論 104
參考文獻 106
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