光固化3D打印与传统涂膜法制备聚酰亚胺的摩擦学性能比较研究  

Comparative Study on the Tribological Properties of Polyimides Fabricated by Vat Polymerization 3D Printing and Traditional Casting

作　　者：姚昕乐 孙初锋[1] 郭玉雄 张晓琴 姬忠莹 郭蕊 王晓龙[2] 王齐华[2] YAO Xinle;SUN Chufeng;GUO Yuxiong;ZHANG Xiaoqin;JI Zhongying;GUO Rui;WANG Xiaolong;WANG Qihua(School of Chemical Engineering,Northwest Minzu University,Gansu Lanzhou 730030,China;State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Gansu Lanzhou 730000,China;Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing,Shandong Yantai 264006,China;Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment&Technology,Jiangsu Wuxi 214122,China)

机构地区：[1]西北民族大学化工学院,甘肃兰州730030 [2]中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000 [3]烟台先进材料与绿色制造山东省实验室,山东烟台264006 [4]江苏省食品先进制造装备技术重点实验室,江苏无锡214122

出　　处：《摩擦学学报》2022年第4期812-821,共10页Tribology

基　　金：甘肃省科技计划(20JR5RA558,20JR10RA055);中央高校基本科研业务费项目(31920210009);兰州市城关区科技计划项目(2018KJGG0020);江苏省食品先进制造装备技术重点实验室自主研究课题(FMZ202019);国家自然科学基金(51935012,52005484,52167003)资助。

摘　　要：为研究光固化3D打印成形技术及其材料配方对光敏聚酰亚胺摩擦学性能的影响,分别采用光固化3D打印技术和传统涂膜成形对比评价了几种光敏型和热固型聚酰亚胺的摩擦学性能、热稳定性及机械性能等.研究表明:为适应光固化3D打印成形需要而加入的活性稀释剂和交联剂对光敏聚酰亚胺的机械性能具有提升作用,但削弱了减摩抗磨和耐热性能;相较于涂膜成形的热固性聚酰亚胺,3D打印样品的耐热性能降低,摩擦系数升高了0.08,磨损率增加了9×10^(−6)mm^(3)/(N·m).尽管光固化3D打印聚酰亚胺的减摩抗磨性能低于热固成形聚酰亚胺,但基于光固化3D打印技术的一体成型、高精度和自由制造等诸多优势,对实现高性能及复杂结构精密润滑器件的一体化智能制造具有重要的工程意义.Polyimide has been used in various fields where extreme environments are necessary because of its high thermal and chemical stability,outstanding mechanical properties,and excellent tribological properties.While in order to meet more and more requirements from different applications,increasing efforts have been made,including the development of monomers,new structures,composites,and processing techniques,etc.Very recently,the emerging 3D printing of polyimide has attracted extensive attention due to its fascinating merits by combining the flexible design and free-form manufacturing of 3D printing with the outstanding comprehensive performance of polyimide.To date,polyimides have been realized by the stereolithography appearance,the direct ink writing and the digital light processing.Despite of the various architectures including gear,retainer,and even bearing and the good properties such as high thermal stability and mechanical strength that have been successfully achieved with the 3D-printed polyimides,few studies on the tribological properties of 3D-printed polyimides.Therefore,it still remains questionable for the 3D printing of polyimides to be promising in moving parting manufacturing.Accordingly,in order to probe the effects of vat polymerization 3D printing on the tribological properties polyimides,the comparison investigation on the tribological properties,thermal stabilities,and mechanical properties of the polyimides with different material recipes fabricated by vat polymerization 3D printing and casting techniques was conducted in this work.The 3D-printed polyimde employed herein was realized in a previous literature,and therefore,for reasonable comparison,the polyimide with the same molecular structure was used for all the other samples,although the material recipes were different for meeting the requirements of different preparation techniques.The results showed that compared with the thermosetting polyimides obtained by casting,the 3D-printed samples exhibited the thermal decomposition temperature r

关 键 词：光固化3D打印 聚酰亚胺 摩擦学性能 成形方法 增材制造 

分 类 号：TH117.1[机械工程—机械设计及理论]