75酒精調配公式的問題，透過圖書和論文來找解法和答案更準確安心。 我們找到附近那裡買和營業時間的推薦產品

以非對稱式交流電泳沉積石墨烯薄膜之研究

為了解決75酒精調配公式的問題，作者陳喬毅 這樣論述：

本研究以天然石墨粉為原料，以改良式哈莫法(Modified Hummer method)製備氧化石墨烯(graphene oxide, GrO)，以拉曼光譜分析其碳原子結構組成；以電子顯微鏡觀察其表面形貌。所得GrO粉體以純水混合適量酒精為溶劑，配製石墨烯懸浮液，以電泳沉積法(Electrophoretic Deposition, EPD)於導電玻璃(Indium Tin Oxide, ITO)基板上沉積石墨烯薄膜。為探討電場模式對EPD薄膜的影響，分別使用正弦波、三角波、方波等不同波型之非對稱式交流電源(Asymmetric AC Electric Field)。先導研究找出適當的電泳電壓

與操作頻率，再固定電壓與頻率，比較各種不同電場模式隨沉積時間增加(5秒、10秒、20秒、30秒)，對於薄膜厚度、形貌與光電特性之影響，並與傳統的直流電泳沉積(DC-EPD)結果比較。上述各種樣品的鍍膜厚度分析結果顯示：與DC-EPD相比，交流電場的電泳沉積速率明顯減慢；不同波型的AAC-EPD沉積速率彼此間沒有顯著的差異。石墨烯薄膜厚度與沉積時間作圖指出：方形波與正弦波的AAC-EPD樣品厚度，符合Hamaker公式，其餘三角波型AAC-EPD所得者則偏離此線性關係。由於交流電場的Stotz-Wien效應，作用於石墨烯片的電場力隨電壓變化而非線性改變，導致不同波型的鍍膜結構。值得注意的是：由於

正弦波、三角波的AAC-EPD是由原對稱波型施以一定電壓偏移(offset)，其淨作用可能類似直流或是脈衝直流電泳(pulse DC-EPD)。反之，方波電源為典型的非平衡式交流電源(unbalanced AC electric fields)，單位週期之淨電流為零。再足夠高的頻率下，電流幾乎完全流入電及附近的電雙層中，因此不會造成氫氣的析出等現象，導致薄膜堆疊較為平整。綜合各項特性分析結果指出：以非對稱的方波AAC-EPD系統具有最佳的可見光穿透度與最低的片電阻。在下列操作參數下：工作電壓40V，頻率50Hz，25%負載循環(duty cycle)，沉積時間30秒之的石墨烯薄膜成品具有平整的

表面形貌(RMS roughness = 4.40 nm)、最低的片電阻(25.93  0.85/)與穿透度(84.59%)。隨著沉積的時間增加，石墨烯薄膜表面越不均勻，並且電阻值上升，穿透度下降。

大理石紋織物印染研究

為了解決75酒精調配公式的問題，作者陳纓騏 這樣論述：

Marbling dyeing is a manual submersed dyeing technique that can express unique strips. However, in this process, the effectiveness of the work is often affected by material ratio. Therefore, this study attempted to explore the dyeing gums, dyes and fabrics used in manual submersed dyeing. Natural f

ood grade glue powder gums in concentrations of 0.5% guar gum, 0.2% corn sugar gum, 0.5% carboxymethyl cellulose, and 0.5% sodium alginate were used. Dyes included: 1) acrylic pigments; 2) painted dyes; 3) submersed dyes for dropping before the printing and dyeing on pure cotton fabric and N/C fabri

c, respectively. This study developed the sample questionnaire for survey based on the printing and dyeing results. Printing and dyeing works produced by using different gums, colors and fabrics have different effects. A total of 12 samples depicted by combinations of gums and dyes were developed fo

r questionnaire statistics. The results showed that in submersed printing and dyeing, using guar gum and carboxymethyl cellulose can best present the smooth stripes and lines. After the printing and dyeing, the acrylic pigments and submersed dyes can produce the best color performance. Finally, afte

r comparing the color fastness of the samples, this study selected 7 combinations including A-1, B-1, C-1, D-1, A-3, B-3, and C-3. For printing and dyeing on two fabrics, 14 groups of samples were tested for color fastness. According to the national testing standards for the color fastness test, th

is study tests the composition of two fabrics according to CNS 2339, and conducted washability test and light resistance test according to CNS 1494 and CNS 3845. The tests found that the pure cotton fabric printing and dyeing D-1 combination’s color fading reached grade 4-5. The dyeing stain of comb

inations of D-1, C-1, B-1, B-3, and C-3 reached grade 4-5. The light resistance fastness of combinations D-1, C-1, B-1, C-3 reached grade 4 and above. For N/C fabric, the color fading of printing and dyeing A-3, C-3 combinations reached grade 4-5. The dyeing stain of all 7 combinations reached grade

4-5. The light resistance of combinations C-3, D-1, C-1, B-1, A-1 reached over grade 4. The above results confirmed that the application of natural gums and acrylic pigments in the printing and dyeing of fabric can improve the fastness of dyeing to grade 4 or above. These results can serve as a refe

rence to the subsequent printing and dyeing technology development.