环境友好型金属切削液的性能研究

以油酸、二乙醇胺、硼酸、苯并三氮唑为主要原料,采用酯交换法制得油酸二乙醇酰胺硼酸酯、相转移法制得苯并三氮唑衍生物,合成一种复合有机硼酸酯,采用傅立叶红外光谱仪对合成产物进行表征。对由复合有机硼酸酯配制的水基切削液进行防锈、润滑及清洗性能的测试。结果表明:(1)以油酸、二乙醇胺、硼酸和苯并三氮唑为主要原料制备出的复合有机硼酸酯,经红外光谱仪的表征,证实合成工艺可行。(2)水基切削液的防腐蚀和防锈性能随着复合有机硼酸酯添加量的增加而改善,在较高温较长时间的持续工作环境下同样能保持良好的防锈性能。(3)当复合有机硼酸酯添加量为0.25%(质量分数)时,水基切削液在60℃、24h的缓蚀率达到了70%左右,35℃时的单片及叠片防锈试验合格,25℃下的表面张力为33.13×10-4 N/dm,润滑性能良好。

Study on the performance of environmentally friendly metal cutting fluids

Oleic acid,diethanolamine,boric acid and benzotriazole were employed as raw materials to produced diglycolamide oleate borate and hydroxymethylation benzotriazole by using transesterification method and phase-transfer method respectively.A composite organic borate ester was synthesized from these two composite to produced water base metal cutting fluids.The composite organic borate ester was characterized by fourier infrared spectrum instrument,and the performance of water base metal cutting fluids was test from 4 aspects of anticorrosion,antirust,lubricating and cleaning property.Analysis of infrared spectrum showed that the synthesize technology of composite organic borate ester was feasible.The performance of water base cutting fluids was improved with increasing the content of composite organic borate ester;the cutting fluids could keep perfect antirust properties even under higher temperatures and longer working-time conditions.When the mass ratio of composite organic borate ester was 0.25%,the corrosion inhibiting efficiency of the cutting fluids could reach to 70% after 24 h at 60 ℃,the surface tension was 33.13×10-4 N/dm at 25 ℃,the cutting fluids was qualified in antirust test at 35 ℃ and it presented perfect lubricity property.