酯型冷冻机油(POE68)与主要HCFs制冷剂相溶性对比研究  

Comparative Study on the Miscibility of Ester-based Refrigeration Oils(POE68)with Major HFCs Refrigerants

作　　者：曹丽丽[1] 马楷[1] 陈雨[1] Cao Lili;Ma Kai;Chen Yu(Synthetic Lubricants Branch,Sinopec Lubricant Co.,Ltd.,Chongqing 400039,China)

机构地区：[1]中国石化润滑油有限公司合成油脂分公司,重庆400039

出　　处：《合成润滑材料》2024年第4期40-42,46,共4页Synthetic Lubricants

摘　　要：根据研究需要,自主设计、合成了4种同黏度级别,但不同分子结构的季戊四醇酯基础油,采用傅里叶变换红外光谱法(FTIR)和色谱水解法确定了组分结构。考察了以此4种基础油配制的酯型冷冻机油成品(A,B,C,D)黏温指数、酸值、闪点、倾点、润滑性能等理化性能和与制冷剂的相溶性。发现不同季戊四醇酯的基本理化性能相差不大,但与制冷剂R134a、R410A临界互溶温度对比,直链酸相对较少的B油,与制冷剂的相溶效果最好,其次分别是D油与A油,C油最差。Based on research requirements,four types of pentaerythritol ester base oils with the same viscosity but different molecular structures were independently designed and synthesized.The component structures were determined using Fourier Transform Infrared Spectroscopy(FTIR)and chromatographic hydrolysis.The physicochemical properties,including viscosity temperature index,acid value,flash point,pour point,and lubricity,as well as the refrigerant miscibility of the four ester-based refrigeration oils(A,B,C,and D)formulated from these four base oils,were evaluated.It was found that their basic physicochemical properties showed no significant differences;however,in terms of their critical miscibility temperatures with refrigerants R134a and R410A,oil B,which contains relatively fewer straight-chain acids,exhibited the best miscibility with the refrigerants,followed by oil D and oil A,with oil C showing the poorest performance.

关 键 词：理化性能 润滑性能 制冷剂的相溶性 冷冻机油 

分 类 号：TE666[石油与天然气工程—油气加工工程]