聚氨酯基合成纸的制备及性能  

Preparation and Performances of Polyurethane Based Synthetic Paper

作　　者：周虎[1] 吴科建 余斌[1] 李宁[1] 周智华[1] 孙汉洲[2] 

机构地区：[1]湖南科技大学化学化工学院理论有机化学与功能分子教育部重点实验室,湖南湘潭411201 [2]中南林业科技大学理学院,湖南长沙410004

出　　处：《高分子材料科学与工程》2015年第11期176-180,共5页Polymer Materials Science & Engineering

基　　金：国家科技部林业公益性行业科研专项(201304603);国家自然科学基金资助项目(51443002;51273062);湖南省自然科学基金资助项目(14JJ5013);湖南省教育厅青年项目(14B064)

摘　　要：以聚氨酯(PU)和碳酸钙(CaCO3)为主要原料,通过湿法转相技术和无机矿物质填充改性技术,成功制备了一种聚氨酯基合成纸。利用扫描电镜对合成纸的微观结构和形貌进行了研究,并对合成纸的力学性能、阻燃性、吸水率和吸墨性等性能进行了分析。SEM观察表明,合成纸的截面孔洞内分散着CaCO3颗粒,且CaCO3分散较均匀,未出现明显的团聚现象。随着CaCO3含量逐渐增加,合成纸的拉伸强度和断裂伸长率降低;但阻燃性却呈现一定的增大趋势,吸水率和吸墨性也明显提升。综合研究表明,当CaCO3含量为60.0%时,合成纸综合性能最好,且具有良好的印刷性和书写性。A novel polyurethane （PU）/CaCO3 synthetic paper was prepared via wet phase inversion technique and inorganic mineral filling modification technology. SEM was employed to observe the morphology structures of synthetic paper. The SEM observation shows that the CaCO3 particles are scattered throughout cross-section of synthetic paper, and CaCO3 can be dispersed evenly, no visible agglomeration of CaCO3 appears as well. With increasing of CaCO3 content, the tensile strength and elongation at break are decreased, while the fire resistance shows a trend of certain increase, the water absorption and ink absorption are increased significantly. Above all, with the CaCO3 mass fraction of 60 % the comprehensive properties of synthetic paper are best and the synthetic paper has good printing and writing performances.

关 键 词：聚氨酯 碳酸钙 吸水率 吸墨性 接触角 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]