紫外光固化涂料的研制

研制了一种紫外光固化环氧丙烯酸酯涂料。讨论了光强度、光引发剂、预聚物等对涂料固化性能的影响     

基于深紫外激光器的大面积干涉光刻装置研究

搭建了基于266 nm波长深紫外光源的干涉光刻装置，使用平顶光整形器将高斯光整形成平顶光束，在硅基底上制备出面积为8.9 mm×25.4 mm、周期为407 nm的一维光栅结构图形和周期为860 nm的二维孔洞结构。使用扫描电子显微镜（SEM）测量了平顶光产生的一维干涉结构的线宽、周期等参数，并与高斯光产生的一维干涉结构参数进行对比。实验结果表明，加入了平顶光整形器的干涉光刻装置产生的周期性光栅结构图形均匀性提升了21.36％。     

Surface characterization of polyimide and polyethylene terephthalate membranes toward plasma and UV treatments

This study is to bring an overview on various methods regarding the surface treatment performed on different polymeric membranes in relation to a deference between the treatment mechanism and their chemical structure. Herein, plasma and UV surface treatments (PST and UST) were utilized to treat the surfaces of two commercial membranes, i.e., aromatic polyimide and polyethylene terephthalate for various durations using a discharge electrode and an UV LED curing system, respectively. Based on the effects of PST and UST processes on the surface of these membranes, their surface properties have been characterized to surface morphology and hydrophilicity (or wettability), at same time the changes have probably occurred on their surface during the PST and UST processes. As a result, their hydrophilic behavior was significantly enhanced after conducting these treatment processes based on the investigation of water contact angle. Moreover, Fourier-transform infrared and Raman spectroscopy manifested the changes in the chemical bonds, interactions and orientations of molecules, which confirmed the apparition and insertion of polar functional groups after the surface treatments, and accordingly, their wettability was enhanced significantly. Also, optical microscopy images showed direct impactions on their surface and the evidence of slight surface aging/damage during the treatment processes based on the presentation of the strange streaks on the treated surfaces. In particular, the peel forces exhibited an increase comparing to the initial membranes, which is characteristically for enhancing their adhesion behavior. Hence, these results are needful for improving the surface properties of a material, and obtaining better adhesion behavior on the membrane-like materials and recycling polymer materials.     

塑料移印油墨的研制

用多异氰酸酯加成物对环氧树脂进行改性共聚, 配以胺加成物的环氧固化剂, 并经过溶剂、助剂、颜料等选择, 制成了一种室温下固化、具有较强的附着力、耐化学品性和电绝缘性能的热固性塑料移印油墨。油墨表面电阻系数７×１０１４, 介电强度２６ ｋＶ／ｍ ｍ , 附着力＜ ２ 级, 细度＜ １５ μ。将有油墨标志塑料片浸入２００＃ 汽油溶剂２４ ｈ, 标志符号不模糊, 不变色, 不脱落; 常温６个月, 油墨印刷工艺性好, 标志性能不变。     

环氧沥青固化过程中的粘度特性

针对环氧沥青固化过程中的流变学特性，采用粘度为表征参数，重点研究固化温度、剪切速率以及稀释比对其固化速度的影响。结果表明，温度越高，环氧沥青的固化速度越快；过快的剪切速率会干扰并破坏固化结构的形成；采用基质沥青对环氧沥青进行稀释可以有效控制固化速度并降低材料成本。综合考虑施工和易性等因素，推荐稀释比(环氧沥青：基质沥青)为25∶75,材料拌合速度为20 r/min,材料在拌合、运输及压实过程中温度应保持在130℃,道路施工需在5 h内结束。