3D打印高强度、可回收互穿网络环氧树脂沿面闪络特性  

Surface Flashover Characteristics of 3D Printing High-strength,Recyclable Interpenetrating Network Epoxy Resin

作　　者：赵腾 黄正勇[1] 李剑[1] 张樱凡 王浩欢 ZHAO Teng;HUANG Zhengyong;LI Jian;ZHANG Yingfan;WANG Haohuan(State Key Laboratory of Power Transmission Equipment&System Security and New Technology,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《高压电器》2023年第9期44-49,59,共7页High Voltage Apparatus

摘　　要：以智能、环保为主题的新型电力系统是中国电力领域发展的主要方向,因此对绝缘材料的各方面性能提出了更高的要求。文中基于高韧性环氧大豆油基光敏树脂,在光固化树脂中添加60 wt%的环氧树脂,采用3D打印光固化和热固化的两步固化方式,制备得到力学和电学性能优异的双固化树脂,并对其进行回收重塑得到回收后的双固化树脂。分别对树脂的拉伸强度、弯曲强度、介电性能、体积电阻率进行测试,研究表明,制备的双固化树脂相比于纯光固化树脂,具有优异的力学性能和绝缘性能,回收后树脂的力学强度是新制树脂的80%。对树脂进行沿面闪络实验,测得双固化树脂的闪络电压达到26.3 k V,采用威布尔分布图看出闪络电压还具有较小的分散性。回收的树脂沿面闪络电压略有降低,但仍然高于纯光固化树脂。分析了表面电荷特性对直流沿面闪络电压的影响。The new power system with the theme of intelligence and environmental protection is the main development direction of China’s power field.Therefore,higher requirements are put forward for all aspects of the performance of insulating materials.In this paper,based on the high toughness epoxy soybean oil based photosensitive resin,60 wt%epoxy resin was added to the UV curable resin,and the 3D printing UV curable and thermal curable two-step curing methods were used to prepare the dual curable resin with excellent mechanical and electrical properties,and the recycled dual curable resin was obtained by recycling and reshaping it.The tensile strength,bending strength,dielectric property and volume resistivity of the resin were tested respectively.The results showed that the prepared double cured resin had excellent mechanical properties and insulation properties compared with the pure light cured resin,and the mechanical strength of the recovered resin was 80%of that of the new resin.The surface flashover test of the resin shows that the flashover voltage of the dual curing resin reaches 26.3 kV.The Weibull distribution diagram shows that the flashover voltage has a small dispersion.The surface flashover voltage of the recovered resin decreased slightly,but it was still higher than that of the pure UV curable resin.The influence of surface charge characteristics on DC surface flashover voltage is analyzed.

关 键 词：3D打印 高强度 闪络特性 双固化树脂 可回收 

分 类 号：TM215.1[一般工业技术—材料科学与工程] TP391.73[电气工程—电工理论与新技术]