本研究是利用 UV-A 波段之紫外光來固化不同成份及不同組成的樹脂。照光時間為20 分鐘，在持續通入氮氣的環境中，使樣品完全硬化。在固定光起始劑含量為1 wt. %而改變寡聚物和單體比例時，除了添加寡聚物80MFA 的最大裂解溫度會隨寡聚物比例增加下降之外，其餘寡聚物的最大裂解溫度皆不會隨著比例的改變而改變；無論是添加哪種寡聚物，其熱膨脹係數皆不會因為寡聚物比例的增加而有明顯的改變；除了添加寡聚物3000A 之樹脂的玻璃轉化溫度會隨寡聚物比例增加而稍微上升之外，其餘樹脂之玻璃轉化溫度並不受改變寡聚物和單體比例影響。而固定寡聚物和單體含量而改變光起始劑含量時，無論使用何種寡聚物，增加光起始劑的含量，最大裂解溫度皆不受影響；且熱膨脹係數皆無明顯的變化；而玻璃轉化溫度除了添加寡聚物3000A 之樹脂會隨光起始劑含量增加而稍微下降之外，其餘樹脂皆不受光起始劑改變的影響。測量表面粗糙度時，除了3000A 樹脂之外，每種樣品的粗糙度大約都在0.3~0.8 nm 上下，平均粗糙度都相當小，表示薄膜塗佈的相當均勻。 The UV-A ultraviolet was applied to cure acrylate resins which arecomposed of different components and different compositions,respectively. The samples were completely cured at a fixed UV-exposuretime of 20 minutes under a circulating nitrogen atmosphere during UVirradiating.When the photoinitiator content was fixed at 1 wt. % and the ratiobetween oligomers and monomers changed, the temperatures ofmaximum rate of degradation of the resins with 80MFA oligomerdecreased with increasing oligomer percentage. No matter whicholigomer is used, the coefficients of thermal expansion of the samplesremain constant while the oligomer percentage increases. The glasstransition temperatures of the samples with 3000A oligomer increaseslightly with increasing oligomer percentage.When the photoinitiator content increased and the amounts ofoligomers and monomers were fixed, the temperatures of maximum rateof degradation and the coefficients of thermal expansion of the resinsdidn’t change regardless of which oligomer is used. The glass transitiontemperatures of the samples with 3000A oligomer decrease slightly withincreasing amount of photoinitiator.Except for the resins with 3000A oligomer, the average surface roughnessof the other samples are about 0.3 ~ 0.8 nm, which are quite small,indicating a uniform coating.
