CHARACTERIZATION OF MODEL PERFLUOROPOLYALKYLETHERS BY MINIATURIZED THERMAL OXIDATIVE TECHNIQUES .1. MODIFIED OXIDATION-CORROSION TEST

被引:17
作者
GSCHWENDER, L [1 ]
SNYDER, CE [1 ]
FULTZ, GW [1 ]
HAHN, DA [1 ]
DEMERS, JR [1 ]
机构
[1] UNIV DAYTON,RES INST,DAYTON,OH 45469
来源
TRIBOLOGY TRANSACTIONS | 1995年 / 38卷 / 03期
关键词
OXIDATION; GAS TURBINE OILS; LUBRICANT CONTAMINATION; ADVERSE ENVIRONMENTS TRIBOLOGY;
D O I
10.1080/10402009508983451
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The metal catalyzed thermal oxidative stability of commercially available and model perfluoropolyalkylether (PFPAE) fluids was investigated by oxidation corrosion tests. Using model PFPAE fluids, prepared via direct fluorination of hydrocarbon analogues, a wider variety of specific molecular structures were available for study than previously available from more conventional PFPAE chemistry synthesis procedures. Because of a limited supply of the model fluids, a miniaturized oxidation corrosion test, using only 6 ml of fluid, was devised. This test, conducted at constant temperatures, was compared to a similar test using 20 ml of fluid on the more abundant commercial fluids and then extended to the model fluids. Details of the miniaturized test procedure and apparatus are presented. Also presented are the chemical structure-thermal oxidative stability relationships of the fluids as derived from this study. The destabilizing effect of an -OCF2- group is confirmed and other more subtle effects are noted.
引用
收藏
页码:618 / 626
页数:9
相关论文
共 12 条
  • [1] CARRE DL, 1986, TRIB T, V29, P122
  • [2] GUMPRECHT WH, 1973, ASLE T, V9, P24
  • [3] HARSACKY FJ, 1995, AD464417
  • [4] PERFLUOROPOLYETHERS - INTRAMOLECULAR DISPROPORTIONATION
    KASAI, PH
    [J]. MACROMOLECULES, 1992, 25 (25) : 6791 - 6799
  • [5] Ohsaka Y., 1985, [No title captured], Patent No. [EP 0148482, 0148482]
  • [6] THERMAL OXIDATIVE STUDIES OF POLY(HEXAFLUOROPROPENE OXIDE) FLUIDS
    PACIOREK, KJL
    KRATZER, RH
    KAUFMAN, J
    NAKAHARA, JH
    [J]. JOURNAL OF APPLIED POLYMER SCIENCE, 1979, 24 (06) : 1397 - 1411
  • [7] SIANESI D, 1973, CHIM IND-MILAN, V55, P208
  • [8] SNYDER CE, 1979, LUBR ENG, V35, P451
  • [9] SNYDER CE, 1976, ASLE TRANS, V19, P171
  • [10] SNYDER CE, 1981, LUBR ENG, V37, P344