廢棄印刷電路板粉塵回收：非金屬部分摻混至高分子再利用

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姓名

戴文琪(Wen-Chi Tai) 查詢紙本館藏

畢業系所

材料科學與工程研究所

論文名稱

廢棄印刷電路板粉塵回收：非金屬部分摻混至高分子再利用
(Non-Metallic waste PCB dust for the low carbon plastic applications)

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至系統瀏覽論文 (2027-9-1以後開放)

摘要(中)

近年來，地球暖化加劇，極端的氣候，造成許多「自然」災害在世界各地發生，因此，保護環境刻不容緩，世界各國也提出相關政策，如歐盟綠色新政、中國的碳達峰、碳中和目標、美國的再生能源支持計畫，以及各種塑膠廢棄物的管控措施等。為了對保護這個環境盡一份心力，延續先前開發的印刷電路板粉塵回收，將分選液進行回收，評估擴大其應用範圍的可能性，並把分選過後的非金屬粉塵，摻混至其他材料中，形成新的再生材料。使用減壓蒸餾技術，我們成功回收了 90% 以上的分選液。後續也嘗試分選後成型版粉塵的非金屬部分，摻混至其他高分子中，進行再利用，其中以球磨 2hr ，摻混比例為 10% 的試片擁有最佳的抗拉強度，且此試片的最大分解速率溫度在約 425℃ 相較於未添加的試片有較佳的熱穩定性，摻混非金屬粉塵後，形成一種強度及硬度較好且耐高溫的再生材料。
除了原先的成型版粉塵，我們也將此分選技術應用在鑽孔粉塵上，也成功進行分選，分選後其非金屬粉塵的銅含量約在 0.96wt% ，下層金屬粉塵銅含量則為 75.29wt% 。

摘要(英)

In recent years, exacerbated global warming and extreme weather conditions have led to numerous natural disasters worldwide. Consequently, environmental conservation has become an urgent priority, prompting countries worldwide to enact relevant policies. Examples include the European Union′s Green Deal, China′s commitments to peak carbon emissions and achieve carbon neutrality, the United States′ support for renewable energy initiatives, and various measures to control plastic waste.

In order to contribute to environmental protection efforts, we are continuing our previous development of recycling printed circuit board (PCB) dust, with a focus on expanding the scope of its application. We are evaluating the possibility of incorporating the recycled separating solution into other materials, creating new recycled materials. Through the use of vacuum distillation technology, we have successfully achieved a recovery rate of over 90% for the separating solution.

Furthermore, we have attempted to separate the non-metallic portion of the shaping dust and incorporate it into other polymers for recycling. Among the various processing methods tested, content 10% non-metal powder that is ball milled for 2hr have a resulted in the highest tensile strength. Additionally, the maximum decomposition rate temperature of the sample with added non-metallic dust is approximately 425°C, indicating better thermal stability compared to samples without additives. This blending of non-metallic dust produces a recycled material with improved strength, hardness, and high-temperature resistance.

In addition to the original application for shaping dust, we have extended this separation technology to drilling dust, achieving successful separation. The non-metallic copper content of the separated non-metallic dust from drilling dust is approximately 0.96wt%, while the copper content of the lower-layer metallic dust is 75.29wt%

關鍵字(中)

★ 循環經濟
★ 液漩式重力分選
★ 廢棄物資源化
★ ESG
★ 減碳

關鍵字(英)

★ Circular economy
★ Liquid vortex gravity separation
★ Waste recycling
★ ESG
★ Carbon reduction

論文目次

目錄
中文摘要 I
ABSTRACT II
致謝 IV
目錄 V
圖目錄 VIII
表目錄 XI
第一章緒論 1
1-1 前言 1
1-2 研究背景 2
1-3 ESG 2
第二章文獻回顧 4
2-1 印刷電路板介紹 4
2-2 非金屬粉塵參混材料之再利用 4
2-3 環氧樹脂 3D 列印添加填料應用 6
2-4 材料摻混前表面改質 8
2-4-1 偶聯劑進行表面改質 8
2-4-2 球磨進行表面改質 11
2-5 液漩式重力分選 13
第三章實驗步驟 15
3-1 化學藥品 15
3-2 印刷電路板液漩式重力分選 15
3-2-1 分選液回收 16
3-3 非銅粉塵再利用 17
3-4 鑽孔粉分選 19
3-5 分析儀器 20
3-5-1 拉伸試驗機 20
3-5-2 X-ray繞射分析儀（XRD） 20
3-5-3 感應耦合電漿光學發射光譜儀（ICP-OES） 21
3-5-4 雷射粒徑分析儀 22
3-5-5 熱重分析儀（TGA） 23
3-5-6 雷射顯微鏡 24
3-5-7 傅立葉轉換紅外光譜（FTIR） 24
3-5-8 冷場發射掃描式電子顯微鏡（CFE-SEM） 25
第四章結果與討論 26
4-1 分選液回收 26
4-2 3D列印樹脂摻混 27
4-2-1 機械性質 27
4-2-2 TGA 35
4-2-3 粒徑分析和FTIR 38
4-2-4 雷射顯微鏡與 SEM 41
4-3 橡膠摻混 46
4-4 鑽孔粉分選 47
4-4-1 鑽孔粉塵形貌分析 47
4-4-2 金屬絲 XRD 分析 50
4-4-3 TGA 及 ICP 分析 51
第五章結論 53
第六章未來工作 54
參考文獻 55

參考文獻

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指導教授

洪緯璿(Wei-Hsuan Hung)

審核日期

2024-7-26

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