Nano-GO-ZnO/CeO_(2)在水性聚氨酯涂料中的性能研究  

Performance Studies of Nano-GO-ZnO/CeO_(2) Composite Particles in Water-Based Polyurethane Coatings

作　　者：黎泓麟 闫玉玲 李丽华[1] LI Honglin;YAN Yuling;LI Lihua(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《石油化工高等学校学报》2024年第1期66-73,共8页Journal of Petrochemical Universities

基　　金：辽宁省教育厅高校科研基金项目(L2020039)。

摘　　要：对水性聚氨酯(WPU)涂料进行改性可以实现其功能化改进,将纳米复合粒子添加至WPU涂料中,可提升其力学性能及抗紫外能力。采用改进的Hummers法制备了氧化石墨烯(GO),共沉淀法制备了nano-ZnO/CeO_(2),原位聚合法合成了nano-GO-ZnO/CeO_(2);对制备的样品进行FT-IR、XRD、TEM、SEM等表征,探究了nano-GO-ZnO/CeO_(2)的掺杂对WPU性能的影响。结果表明,nano-GO-ZnO/CeO_(2)是由六方纤碎矿结构的ZnO和立方晶型萤石结构的CeO_(2)形成的杂化粒子负载于GO表面组成的;与纯WPU膜相比,添加质量分数为0.6%的nano-GOZnO/CeO_(2),WPU膜的断裂拉伸强度和断裂拉伸率分别提高了43.1%和47.0%;经过168 h的紫外光老化实验后,改性膜的吸水率为15.4%,断裂拉伸强度和断裂拉伸率分别提高了328.0%、39.0%。由此可知,nano-GO-ZnO/CeO_(2)可以有效提高WPU成膜后的力学性能和抗紫外老化性能。The modification of waterborne polyurethane(WPU)coating can be improved,and the nanocomposite particles can be added to WPU coating,and its mechanical properties and ultraviolet resistance can be improved.GO was synthesized by modified Hummers method,nano‐ZnO/CeO_(2) by copprecipitation,and nano‐GO‐ZnO/CeO_(2) by in situ polymerization.It was also characterised by FT‐IR,TEM,SEM,XRD,etc.,and the effect of nano‐GO‐ZnO/CeO_(2) doping on the performance of WPU was explored.The results showed that nano‐GO‐ZnO/CeO_(2) was composed of hybrid particles formed by ZnO and CeO_(2) of cubic crystal fluorite structure on the GO surface.Compared with the pure WPU film,the fracture tensile strength and elongation at break of the WPU film with the addition of a mass fraction of 0.6%nano‐GO‐ZnO/CeO_(2) increased by 43.1%and 47.0%.After 168 h of UV aging experiments,the modified membrane absorbed 15.4%of water,increased the tensile strength at break by 328.0%and the elongation at break by 39.0%.It shows that nano‐GO‐ZnO/CeO_(2) can effectively improve the mechanical properties and UV aging resistance of WPU after film formation.

关 键 词：氧化石墨烯 氧化锌 氧化铈 水性聚氨酯 紫外屏蔽 力学性能 

分 类 号：TQ636.3[化学工程—精细化工]