中文摘要本研究利用溶劑摻合與熔融摻合法將兩種不同類型的聚碳酸酯摻合。研究的目的在將此摻合物取代現今感光鼓用之聚碳酸酯塗料的主載體；本研究以示差掃瞄熱分析儀（DSC）探討兩聚碳酸酯彼此間的相容性及熱性質變化。研究結果顯示在好幾個比例之摻合體中，溶劑摻合與熔融摻合均呈現單一玻璃轉移溫度現象。在原配方溶劑比例中，由於聚碳酸酯之一不溶於甲苯，本研究發現先以二氯甲烷溶解摻合物後再加入甲苯可以完全將摻合物溶解。由於熔融摻合耗能且聚合物易變質，其摻合效果並不比溶劑摻合佳，所以本研究建議選擇溶劑摻合。本研究因此以溶劑摻合為主，探討配製完成之摻合體溶液黏度與原配方黏度之差異，以利於以浸沾式塗佈法所得之膜厚符合規範。研究結果中顯示，當原配方之唯一聚碳酸酯所佔總比例之80%時，與原配方黏度差異為30c.p。本研究也利用黏度計探討摻合體溶液黏度與剪切力關連性，結果顯示黏度並不隨剪切力改變而改變可推測溶液為牛頓流體，在此結果下，加工過程中可忽略外界所給予的剪切力影響，僅需留意黏度值與膜厚間之關係。此外，利用此摻合體溶液製備薄膜探討其電阻，結果顯示經改良後其電阻值約為原配方之1.5倍。 AbstractIn this study, we used solvent blending and melt blending to mix two different types of polycarbonate for the improvements to binder of the polycarbonate coating on the Organic Photo Conductor. By differential scanning calorimetry, the miscibility and the thermal properties of blends were investigated. The results showed that at several compositions of the blend, the products of solvent blending and melt blending showed single glass transition temperature. The work found that changing the order of solvent addition still meets the requirements of the coating. Melt blending was discarded because it cost energy and downgraded the polymers and furthermore it showed inferiority comparing with solvent blendingproduct with respect to extent of mixing.The viscosity of the solution made from solvent blends affected thefilm thickness in the dip coating. The results showed that when the original polycarbonate occupied a portion of 80%, the solution viscosity was 30cp higher than that of solution made from 100% of the original polymer. We used viscometer to investigate relation between the viscosity of the solution of solvent blends and shear stress. The results showed that the viscosity did not change with shear stress; this suggested that solutions are Newtonian. With the results, in processing, the effect of shear force can be ignored, but it was reminded that the effect of viscosity on the coating process should be taken into account on thickness of the coating film. In addition, we used the film made from solvent blending to investigate the electrical resistance. The results showed that the resistance is about 1.5 times that of original polycarbonate.
