- 學位論文
感光性水性PU的合成與性質研究
Synthesis and Characterization of Photosensitive Waterborne Polyurethanes
摘要
水性光阻材料主要是利用水來取代材料內部份或大部分之有機溶劑，再經由加入適當之光起始劑、多壓克力官能基單體與添加劑，所配製成之液態感光塗料，若將此液態感光塗料繼續加工烘烤，去除水分、溶劑並塗佈於支持膜上，則可製成水性乾膜光阻劑。此類水性感光材料以水取代溶劑的比例，最少可有50%，最多可超過95%。並且當此材料應用於印刷電路板相關製程時，其所使用之設備、操作方法與操作條件與目前溶劑型光阻材料可以完全相同，性能測試也相當。 本研究論文主要是利用陰、陽離子與非離子型水性聚胺基甲酸酯之合成方式，將具有三壓克力官能基之單體(M235)導入水性PU之側鏈或主鏈之末端，以合成出一系列水性紫外光可交聯之感光型PU材料。並且利用 FT-IR來鑑定其所合成出之高分子結構。然後將紫外光可交聯之水性PU材料與光起始劑- Irgacure 2959均勻混合後塗佈於Teflon盤上，藉由365 nm之紫外光燈源，在不同之照射時間促使水性感光物交聯硬化成膜，並將成膜後之材料透過TGA、DMA來測試其熱安定度與機械性質，發現隨著曝光時間增加非離子型與陽離子型水性PU材料之耐熱程度越佳；也發現隨著曝光時間越長其機械性質也有明顯之變化。
並列摘要
Waterborne UV-curing systems have advantages of non-contamination, non-toxicity, non-skin irritation and safety of production, and become an attractive research and application areas of UV-curing systems. In this study, three series of Waterborne UV-curing resins were prepared from different materials, we successfully synthesized a series of UV-curable waterborne polyurethane emulsion based on hydroxyl-terminated(M235), polyethylene glycol(PEG), isophorene diisocyanate (IPDI), dimethylopropionic acid (DMPA) and triethylamine (TEA) as the neutralizer, 2-hydroxy-4-hygroxyethoxy-2-methyl -propio-phenone (Iragcure 2959) was used as the photoinitiator with deionized water as the diluent. Fourier transform infrared(FTIR) spectra were used to identify the formation of the UV-curable PU ionomers based on M235 and the curing process. The UV curable waterborne polyurethane films wrer formed by casting the formulated with 1wt% photo-initiator Irgacure 2959 based on the resis onto a Teflon plate by radiation different time under 365nm UV lamp. Thermogravimetric analysis(TGA), Dynamic Mechanical Analysis(DMA) showed that the thermal stability of the cured film was raised with the increasing of radiation time.