臺灣博碩士論文加值系統

塑膠產品的應用為人類帶來方便，但是塑膠材料不會分解的特性也帶來了許多垃圾堆積與汙染的環保問題，因此可分解性高分子材料-聚乳酸(Polyactic Acid，PLA)的出現，提供了一個很好的解決方法。因為聚乳酸(PLA)是自然環境下可被水及微生物降解的材料，亦可藉由合成因子與加工技術的調控來改變聚乳酸或聚乳酸複合材料的性質，進而應用於各種工業產品領域。
本篇論文以開發聚乳酸添加回收紙(碎紙張)複合材料為主軸，並且採用射出成型技術來生產標準的測試工件，在此研究中，以聚乳酸為基材添加不同重量比例之碎紙張(5wt%、10wt%、15wt%)來進行實驗測試，並且搭配塑膠射出成型的製程參數實驗來研究此複合材料的機械性質。從實驗結果發現，此複合材料的衝擊強度明顯隨著碎紙張添加含量的增加而增強，當紙張含量添加至15wt%時，其衝擊度約提升了20%，另外一方面，也可藉由射出成形參數的調變來改變此複合材料的拉伸強度與彎曲強度特性。
最後，本研究成功驗證PLA/回收紙型複合材料的機械性質與可行性，可以有效節省PLA的材料成本，進而將此種複合材料應用於多種綠色環保產品之製作。

With a large number of polymer materials being used in various fields, white pollution has become a worldwide environmental problem. One of the most effective solutions to environmental problems is developing the biodegradable polymeric materials to replace non-degradable plastics. The biodegradable polymers poly(lactic acid) (PLA) and PLA composite material have recently become widely used in the industrial applications, due to their biocompatibility and environmentally friendly characteristics.
In this study, a composite material with PLA polymer and recycled paper was developed and produced by using injection molding technology. The influences of recycled paper and processing conditions of injection molding on the mechanical performance of composite materials were investigated. The experimental results show that the impact strength of the composites increased with increasing recycled paper content. Under the different processing conditions of injection molding process, the tensile strength and bending strength of the composite materials could be changed.
Finally, the mechanical properties and applicability of the composites were demonstrated. This kind of composite material shows great potential for production of various green products with low cost.

摘要 i
Abstract ii
誌謝 iv
目錄 v
表目錄 vii
圖目錄 viii
第一章 緒論 1
1-1 前言 1
1-2 研究動機與目標 3
1-3 文獻回顧 4
1-4 論文架構 23
第二章 實驗材料與設備介紹 24
2-1 實驗材料 24
2-2 實驗設備 29
2-2-1 複材混煉設備 29
2-2-2 射出成形設備 31
2-2-3 模溫控制設備 34
2-2-4 機械性質試驗設備 36
2-3 量測儀器 39
2-3-1 示差掃描熱分析儀(DSC) 39
2-3-2 毛細管流變儀 40
2-3-3 掃描式電子顯微鏡 41
第三章 實驗方法與流程 42
3-1 實驗流程 42
3-2 實驗規劃 44
3-2-1 模具介紹 44
3-2-2 材料製作 46
3-2-3 製程參數設定 47
3-3 機械性質試驗 48
3-3-1 衝擊試驗 48
3-3-2 拉伸試驗 49
3-3-3 彎曲試驗 51
第四章 結果與討論 53
4-1 PLA/紙張複合材料SEM觀察結果 53
4-2 PLA/紙張複合材料熱性質分析結果 56
4-2-1 DSC實驗結果 56
4-2-1 黏度實驗結果 61
4-3 PLA/紙張複合材料機械性質分析結果 63
4-3-1 單一參數對衝擊實驗結果 63
4-3-2 單一參數對拉伸實驗結果 66
4-3-3 單一參數對彎曲實驗結果 72
4-4 PLA/紙張複合材料斷面SEM觀察結果 78
第五章 結論與未來研究發展方向 80
5-1 結論 80
5-2 未來研究發展方向 82
參考文獻 83
個人簡歷 87

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