第49卷第3期:962-970高电压技术Vol.49,No.3:962-9702023年3月31日HighVoltageEngineeringMarch31,2023DOI:10.13336/j.1003-6520.hve.202210572023年3月31日第49卷March可回收和高性能3D打印树脂的制备方法张樱凡,黄正勇,王浩欢,杨森元(重庆大学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)摘要:新型电力系统正往绿色化、智能化发展,采用3D的打印方式制备电工材料成为未来电气设备的发展方向。现有的光固化3D打印树脂力学性能较差,且不可回收利用,文中基于植物基的大豆油丙烯酸酯,添加环氧树脂和聚硫橡胶,采用双固化工艺制备高力学性能的3D打印件。研究表明,制备的3D打印双固化树脂原料粘度适中,且具有较快的光固化速率;3D打印双固化树脂样品的拉伸强度为83MPa,弯曲强度为129MPa,综合力学性能优于双酚A环氧树脂和商用光固化树脂。在加热条件下,3D打印双固化树脂中的酯基在1,5,7−三氮杂双环[4.4.0]癸−5−烯催化剂催化下发生酯交换反应,聚硫橡胶中的二硫键在高温下断裂和重组加速酯交换反应,促进3D打印双固化树脂的高效绿色回收。研究表明,3D打印双固化树脂的回收率可达98%,且回收过程不产生三废。关键词:3D打印;可回收;高性能;双固化树脂;酯交换PreparationofRecyclableandHigh-performance3DPrintingResinsZHANGYingfan,HUANGZhengyong,WANGHaohuan,YANGSenyuan(StateKeyLaboratoryofPowerTransmissionEquipment&SystemSecurityandNewTechnology,ChongqingUniversity,Chongqing400044,China)Abstract:Thenewpowersystemisdevelopingtowardsgreenpowerandintelligentpower.Preparingelectricalmaterialsbythe3Dprintingtechnologyhasbecomethefuturedevelopmentdirection.Thecurrent3Dprintingultraviolet-curedresinshavepoormechanicalpropertiesandarenotrecyclable.Inthisstudy,thecompositeofepoxyresin,polysulfiderubberandsoybean-oil-basedacrylatesispreparedbythedualcuringprocesstoachievehighperformanceandrecoveryof3Dprinting.Therawmaterialof3Dprintingdual-curingresinhasmoderateviscosityandfastphotocuringrate.Re-searchshowsthatthenewresinhasthetensilestrengthof83MPaandflexuralstrengthof129MPa,whicharemuchgreaterthanthoseofthecurrent3Dprintingultraviolet-curedresin.Moreover,1,5,7-triazabicyclo[4.4.0]dec-5-eneisaddedtothepolymertoenabletrans-esteri...