植物绝缘油中抗氧化剂的PDSC评价和选用  

Evaluation on effects of several antioxidants in vegetable insulating oil by pressure differential scanning calorimetry method

作　　者：李孟强 万涛 彭长根 葛文托 杨钦 于萍[1] 罗运柏[1] Li Mengqiang;Wan Tao;Peng Changgen;Ge Wentuo;Yang Qin;Yu Ping;Luo Yunbai(Engineering Research Center of Silicone Compounds and Materials,Ministry of Education,Wuhan University,Wuhan 430072,China;Electric Power Science Research Institute of State Grid Hunan Electric Power Co.,Ltd.,Changsha 410007,China;Yueyang Jinhan High-Tech Co.,Ltd.,Yueyang 414014,China)

机构地区：[1]武汉大学有机硅化合物及材料教育部工程研究中心,湖北武汉430072 [2]国网湖南省电力有限公司电力科学研究院,湖南长沙410007 [3]岳阳金翰高新技术股份有公司,湖南岳阳414014

出　　处：《可再生能源》2021年第6期711-716,共6页Renewable Energy Resources

基　　金：国家重点研发计划项目(2017YFB0902500)。

摘　　要：文章采用加压差示扫描量热法(PDSC)和旋转氧弹法(RBOT)对比评价了4,4’-亚甲基双(2,6-二叔丁基苯酚)(抗氧化剂702)、2,6-二叔丁基酚(DTBP)、2,6-二叔丁基对甲酚(BHT)和叔丁基对苯二酚(TBHQ)4种抗氧化剂在大豆植物绝缘油中的作用及其适宜添加量。试验结果表明,两种方法得出的结果相一致,均是抗氧化剂702对大豆植物绝缘油抗氧化性能的提升效果最好,添加0.8%的抗氧化剂702后,大豆植物绝缘油的抗氧化性能与25#矿物变压器油相当。Vegetable insulating oil is widely concerned for its high ignition point,degradability and renewable resources.Pressure differential scanning calorimetry(PDSC)has the advantages of low dosage,short testing time and good repeatability.The effects of 4,4'-methylene bis(2,6-tert-butylphenol)(antioxidant 702),2,6-tert-butylphenol(DTBP),2,6-tert-butyl para-cresol(BHT)and tert-butyl hydroquinone(TBHQ)in vegetable insulating oil and their appropriate amounts were evaluated by PDSC and rotary oxygen bomb method.It was showed that the antioxidant performance of antioxidant 702 in soybean insulating oil is the best,and the antioxidant performance of 0.8%soybean insulating oil added is equivalent to that of 25#mineral transformer oil.

关 键 词：差示扫描量热法 植物绝缘油 天然酯 抗氧化剂 

分 类 号：TK6[动力工程及工程热物理—生物能] TQ645[化学工程—精细化工]