氧化铝负载金属-有机复合材料对老化植物绝缘油吸附净化研究  

Study on adsorption and purification of aged vegetable insulating oil by alumina loaded metal-organic composite materials

作　　者：王强[1] 黄正勇[1] 梁苏宁 杨智 邵先军 郑一鸣 WANG Qiang;HUANG Zhengyong;LIANG Suning;YANG Zhi;SHAO Xianjun;ZHENG Yiming(State Key Laboratory of Power Transmission Equipment Technology,Chongqing University,Chongqing 400044,China;State Grid Zhejiang Electric Power Research Institute,Hangzhou 310014,China)

机构地区：[1]重庆大学输变电装备技术全国重点实验室,重庆400044 [2]国网浙江省电力有限公司电力科学研究院,浙江杭州310014

出　　处：《绝缘材料》2024年第5期73-78,共6页Insulating Materials

基　　金：国网浙江省电力有限公司科技项目(5211DS22000H)。

摘　　要：植物绝缘油在电气设备中易老化产生甲酸、乙酸和甲醛等极性小分子物质,降低绝缘油的理化性能和电气性能,影响设备运行安全。为解决绝缘油品质劣化的问题,可以采用吸附工艺对老化后植物绝缘油进行净化处理,减少老化产生的极性小分子杂质。本文采用原位生长法制备2-甲基咪唑锌盐(ZIF-8)/氧化铝(Al_(2)O_(3))复合材料,并将其作为吸附剂对老化植物绝缘油进行吸附净化,并对吸附净化后植物绝缘油的理化和电气性能进行测试。结果表明:经ZIF-8/Al_(2)O_(3)复合材料吸附净化后,植物绝缘油的酸值和介质损耗因数明显降低,体积电阻率和起始氧化温度显著提高,品质明显提升。此外,分子模拟结果也表明,ZIF-8/Al_(2)O_(3)复合材料对植物绝缘油中极性小分子的吸附能力优于Al_(2)O_(3)。Vegetable insulating oil is easy to age in electrical equipment and produce polar small molecule substances such as formic acid,acetic acid,and formaldehyde,which reduces the physicochemical properties and electrical properties of insulating oil and affects the safety operation of equipment.In order to solve the quality deterioration problem of insulating oil,the aged vegetable insulating oil can be purifed by adsorption technology to reduce the polar small molecule impurities generated during ageing.In this paper,a 2-methylimidazole zinc salt(ZIF-8)and alumina(Al2O_(3))composite material was prepared,the ZIF-8/Al2O_(3) composite material was used to adsorb and purify the aged vegetable insulating oi,and the physicochemical properties and electrical properties of the vegetable insulating oil after adsorption and purification were tested.The results show that after adsorption and purification by ZIF-8/Al2O_(3) composite material,the acid value and dielectric loss factor of the vegetable insulating oil decrease significantly,the volume resistivity and initial oxidation temperature increase significantly,and the quality is improved significantly.In addition,the molecular simulation results also show that the adsorption capacity of ZIF-8/Al2O_(3) composite material for polar small molecules in vegetable insulating oil is better than that of Al2O_(3).

关 键 词：植物绝缘油 复合材料 ZIF-8 吸附 极性小分子 

分 类 号：TM214[一般工业技术—材料科学与工程]