摘要:

AbstractOligomers of higher alphaolefins, mainly of 1‐decene and 1‐octene have important applications as synthetic lubricating oils or their components. The results of fractionation of polydecene, polyoctene, and polybutene oils in a wiped‐film molecular evaporator, for the purpose of preparing narrow distillate cuts, are presented in the paper. Characteristics and properties of the fractions obtained are shown, and the possibilities for this distillation method in the fractionation of polyolefin oils disc

ISSN:0265-6582    

DOI:10.1002/jsl.3000090402

出版商:John Wiley&Sons, Ltd    

年代:1993

数据来源: WILEY

摘要:

AbstractThe aim of this article is to report wear and friction studies of cylindrical test steel pins coated with polyamide (PA6) incorporating fillers (iron, copper, aluminium, tin, lead) and solid lubricants (graphite, molybdenum disulphide (MoS2)) to improve the mechanical, thermal, and frictional properties of polyamide (PA6). The coated testpins were loaded against a rotating cylinder of bearing steel in dry, lubricated, abrasive conditions at constant load and sliding speed. The test results show a significant reduction in wear and friction for both copper‐filled polyamides and lead‐filled polyami

ISSN:0265-6582    

DOI:10.1002/jsl.3000090403

出版商:John Wiley&Sons, Ltd    

年代:1993

数据来源: WILEY

摘要:

AbstractA requirement for a nonflammable hydraulic fluid was defined in the 1970s to eliminate losses attributable to hydraulic system fires. In order to increase the possibility of success of the nonflammable hydraulic fluid development programme, requirements for compatibility with current hydraulic fluids, seals, and system designs were not established. All previous attempts to develop a compatible nonflammable hydraulic fluid had been unsuccessful. Extensive screening of many chemical classes of candidate base fluids led to the selection of a Chlorotrifluoroethylene (CTFE) oligomer. Considerable hardwarel system development was performed for hydraulic system applications, including development of high‐pressure actuators, pumps, and motors. The major thrust of the programme, a totally new system design, was demonstrated in the Lockheed High Technology Test Bed air craft and in the McDonnell Douglas Aircraft 55.2 MPa (8000 psi) technology ‘Iron Bird’ demonstrator. Possible retrofit applications for current systems include a C135E fireproof brake system and the M1/M1A1 Abrams tank gun mount. This paper also discusses material compatibility requirements, design considerations, and the results of pump testing of the nonflammable hydraulic

ISSN:0265-6582    

DOI:10.1002/jsl.3000090404

出版商:John Wiley&Sons, Ltd    

年代:1993

数据来源: WILEY

摘要:

AbstractThis work reports the physico‐chemical characteristics, the tribological characteristics and additive susceptibility of two series of perfluoropolyether fluids and greases, one obtained from hexafluoropropene, the other from tetrafluoroethene. Some applications of perfluoropolyether lubricants are considere

ISSN:0265-6582    

DOI:10.1002/jsl.3000090405

出版商:John Wiley&Sons, Ltd    

年代:1993

数据来源: WILEY

ISSN:0265-6582    

DOI:10.1002/jsl.3000090406

出版商:John Wiley&Sons, Ltd    

年代:1993

数据来源: WILEY

ISSN:0265-6582    

DOI:10.1002/jsl.3000090407

出版商:John Wiley&Sons, Ltd    

年代:1993

数据来源: WILEY

ISSN:0265-6582    

DOI:10.1002/jsl.3000090408

出版商:John Wiley&Sons, Ltd    

年代:1993

数据来源: WILEY

ISSN:0265-6582    

DOI:10.1002/jsl.3000090401

出版商:John Wiley&Sons, Ltd    

年代:1993

数据来源: WILEY