铝粉颜料的制备及其改性研究-材料加工工程专业毕业论文.docxVIP

硕士论文 硕士论文 铝粉颜料的制备及其改性研究 摘要 本文首先从理论上研究了球形铝粉片状化的过程，建立了研磨过程的模型，提 出铝粉片状化可分为三个阶段的观点，即成饼阶段、薄化阶段和破碎阶段；从能耗 学说的角度，推导了公式，讨论了铝粉研磨过程中凡个重要因素的影响。 行星式球磨机研磨制备了闪光铝粉颜料，讨论了各工艺条件对铝粉粒子形貌的 影响。结果表明，要得到形貌规整的闪光铝粉颜料，需控制研磨条件，使球形原料 铝粉在较温和的条件下延展成圆饼状；而实验结果也验证了之前的理论分析和推导 出的公式。通过实验得到的最佳工艺条件为：行星磨的转速为400r／rain一500rlmin、 球料比为10。16、研磨时间为4小时，以煤油为溶剂，硬脂酸为助磨剂。 利用溶胶一凝胶法，在片状铝粉颜料粒子表面包覆了一层惰性的二氧化硅膜， 以制备水性涂料用铝粉颜料。讨论了包覆二氧化硅的条件，经包膜的片状铝粉粒子 通过扫描电镜、EDS能谱仪、红外光谱仪、激光粒度测试仪和接触角测定仪等分别 进行了分析和表征。实验结果表明，改性后的片状铝粉粒子表面包覆了一层惰性的 二氧化硅膜，铝粉颜料表面由疏水性变为亲水性。 通过液相沉积法在经二氧化硅包覆后的铝粉颜料复合粒子表面再包覆了一层 氧化铁膜，使铝粉颜料着色，得到了彩色铝粉颜料。 关键词：铝粉颜料行星磨 研磨二氧化硅包覆亲水氧化铁着色 硕士论文 硕士论文 铝粉颜料的制备及其改性研究 Abstract The process of flaking aluminum powder was studied and discussed by founding model of milling aluminum powder and educing the formulae． Aluminum flake pigments were manufactured by planetary bali mill and effect of the related factors the shape of aluminum flake was studied．The results showed that aluminum pigments having a high grade of optical characteristics could be prepared only by controlling conditions properly,and the best was when the running rate of mill was 400—500 r／min，the weight ratio of ball to the materials was 10—16 and grinding for about 4 hours．Wherein kerosene Was used as grinding agent and stearic acid as grinding aid． Silica encapsulation of aluminum flakes by sol／gel process provided aluminum pigments used in water-based coatings．The effect of the related factors of the process was studied．Encapsulated aluminum flakes were characterized by Scanning Electron Microscopy(SEM)，EDS Energy Spectrum instrument，Infrared Spectrum(IR)，laser particle size measurer and touch angle measurer．The results showed that aluminum flakes turned to being water—inert and hydrophilic after being coated by layer of silica． Aluminum pigments were colored up by liquid deposition of ferric oxide after being coated by layer of silica． Keywords：aluminum flake pigments planetary bail mill milling silica coating hydrophilic ferric oxide coloring up II 声 声 明 本学位论文是我在导师的指导