合成酯分子结构对其与制冷剂互溶性能的影响规律研究

石油炼制与化工 ›› 2019, Vol. 50 ›› Issue (10): 83-87.

合成酯分子结构对其与制冷剂互溶性能的影响规律研究

金孔杰^1,2,3,4,王建华²,王欣²,王晓波⁴

1. 解放军海军研究院博士后科研工作站
2. 解放军92228部队
3. 解放军92117部队博士后科研工作站
4. 中国科学院兰州化学物理研究所博士后科研流动站

收稿日期:2019-04-10 修回日期:2019-06-07 出版日期:2019-10-12 发布日期:2019-10-24
通讯作者: 金孔杰 E-mail:jinkongj@163.com
基金资助:
中国博士后科学基金面上资助第63批

INFLUENCE OF SYNTHETIC ESTERS MOLECULAR STRUCTURE ON MUTUAL SOLUBILITY OF ESTERS AND REFRIGERANTS

Received:2019-04-10 Revised:2019-06-07 Online:2019-10-12 Published:2019-10-24
Supported by:

摘要/Abstract

摘要： 测试了不同结构的三羟甲基丙烷复合酯、季戊四醇复合酯及双季戊四醇酯与制冷剂R22，R134a，R410A的临界互溶温度，分析了复合酯中多元醇、二元酸和一元酸的结构变化对其与制冷剂互溶性能的影响，以及双季戊四醇酯中直链和支链脂肪酸的结构变化对其与制冷剂互溶性能的影响。结果表明：复合酯与制冷剂的互溶性能主要取决于复合酯的基本结构，复合酯中多元醇、二元酸和一元酸的变化未对其与R22，R134a，R410A的互溶性能产生显著影响；双季戊四醇酯的基本结构是其具备优异的与制冷剂互溶性能的重要因素；双季戊四醇酯中直链脂肪酸的含量越高、碳链越长，其与R134a的互溶性能越差；双季戊四醇酯中支链脂肪酸的含量越高、碳链越短，其与R134a的临界互溶温度越低，溶解能力越强。

关键词: 复合酯, 双季戊四醇酯, 制冷剂, 分子结构, 临界互溶温度

Abstract: The critical intersolubility temperatures of trimethylolpropane complex esters, pentaerythritol complex esters and dipentaerythritol esters with refrigerants (R22, R134a and R410A) were measured. Then the influences of polyhydric alcohol, binary acid and monoacid in complex esters on intersolubility of refrigerants were analyzed. Meanwhile, the effects of straight chain fatty acids and branched chain fatty acids in dipentaerythritol esters on solubility of refrigerants were also studied. Results showed that the intersolubilityof complex esters with refrigerants were mainly influenced by the basic molecular structure of the esters. The structural changes of polyhydric alcohols, binary acids and monoacids had no significant influence on solubility with R22, R134a and R410A. The basic molecular structure of dipentaerythritol ester is the decisive factor for excellent solubility with refrigerants. The dipentaerythritol ester containing more and longer straight chain fatty acids showed worse solubility with R134a. The more and the shorter branched chain fatty acids in dipentaerythritol ester, the lower the critical intersolubility temperature, and the stronger intersolubility with R134a.

Key words: complex ester, dipentaerythritol ester, refrigerant, molecular structure, critical solubility temperature

中图分类号:

金孔杰王建华王欣王晓波. 合成酯分子结构对其与制冷剂互溶性能的影响规律研究[J]. 石油炼制与化工, 2019, 50(10): 83-87.

参考文献

[1] 陈美名，宗明．用于R134a和R22制冷系统的合成冷冻机油研究[J]．石油炼制与化工，2011，42（8）：69–73．
[2] Moises A, Marcelino N, Jader R B. Solubility, density and viscosity of a mixture of R-600a and polyol ester oil [J]. International journal of refrigeration, 2008, 31:34–44.
[3] 牛豫，王娟．L-DRB/A10全封闭冷冻机油的研制[J]．石油炼制与化工，2007，38（7）：54–59．
[4] 李雁秋，康茵，王鹏，等．冷冻机油对R600a型冰箱压缩机制冷性能的影响[J]．石油炼制与化工，2011，42（1）：80–83．
[5] 李涛，李强，阚杰，等．润滑油对制冷系统的影响[J]．制冷与空调，2005，5（4）：75–78．
[6] Zhelezny V P, Semenyuk Y V, Ancherbak S N, et al. An experimental investigation and modelling of the solubility, density and surface tension of 1,1,1,3,3-pentafluoropropane (R-245fa)/synthetic polyolester compressor oil solutions [J]. Journal of Fluorine Chemistry, 2007, 128:1029–1038.
[7] Wahlstrom A, Vamling L. Solubility of HFC32, HFC125, HFC134a, HFC143a, and HFC152a in a Pentaerythritol Tetrapentanoate Ester [J]. Journal of Chemical and Engineering Data, 1999, 44:823–828.
[8] 陈毓暑．新型R290制冷系统用酯类冷冻机油的合成与性能研究[D]．深圳:中国科学院深圳先进技术研究院，2014．
[9] 李雁秋，王鹏．新型环保冷冻机油的研制[J]．润滑油，2006，21（4）：5–10．
[10] 钱伟，王维，钱文波，等．替代制冷剂R134a、R290与润滑油的互溶性实验研究[J]．制冷与空调，2008，8（3）：31–35．
[11] Rostami S D, Thompson R I G. Statistical thermodynamic modeling of environmentally friendly refrigerant-lubricant mixture of R134a and an ISO 15 Polyol Ester [J]. Trans I Chem E, 2000, 78:87-90.
[12] 李玉平．与R134a相溶的冷冻机油的研制[J]．合成润滑材料，2015，32（2）：5–7．
[13] 费建奇，赵伟．多元醇酯类冷冻机油用基础油的合成及其性能[J]．润滑油，2009，24（4）：22–25．
[14] Wahlstrom A, Vamling L. Solubility of HFCs in Pentaerythritol Tetraalkyl Esters [J]. Journal of Chemical and Engineering Data, 2000, 45:97–103.
[15] Wahlstrom A, Vamling L. Development of models for prediction of solubility for HFC working fluids in pentaerythritol ester compressor oils [J]. International Journal of Refrigeration, 2000, 23:597–608.
[16] 谢泉，顾军惠，等．润滑油品研究与应用指南[M]．北京：中国石化出版社，2007：279–304．