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Journal of Synthetic Lubrication最新文献

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A Mechanism of Thermo-oxidative Degradation of Polyol Ester Lubricants 多元醇酯润滑油热氧化降解机理研究
Journal of Synthetic Lubrication Pub Date : 1992-07-01 DOI: 10.1002/JSL.3000090204
V. Bakunin, O. Parenago
{"title":"A Mechanism of Thermo-oxidative Degradation of Polyol Ester Lubricants","authors":"V. Bakunin, O. Parenago","doi":"10.1002/JSL.3000090204","DOIUrl":"https://doi.org/10.1002/JSL.3000090204","url":null,"abstract":"Polyol ester lubricants are used in a wide range of temperature conditions, normally from ‐ 54 up to +220 °C, and their application can be limited by high tem perature oxidation leading to viscosity increase, sludge and/or formation of d eposits. This paper is concerned with the chemical processes which take place during the oxid ation of esters, particularly polyol esters, and discusses the selectivity of oxygen attac k on ester molecules, and the formation and decomposition of hydroperoxides as well as other pr oducts formed as a result of ester oxidation. Proposed mechanisms of polyol ester lubricant oxidation are discussed, and unresolved problems which require additional research efforts are revealed.","PeriodicalId":17149,"journal":{"name":"Journal of Synthetic Lubrication","volume":"35 1","pages":"127-143"},"PeriodicalIF":0.0,"publicationDate":"1992-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78569442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 34
High-temperature hydraulic fluids 高温液压油
Journal of Synthetic Lubrication Pub Date : 1992-07-01 DOI: 10.1002/JSL.3000090203
L. Gschwender, C. Snyder
{"title":"High-temperature hydraulic fluids","authors":"L. Gschwender, C. Snyder","doi":"10.1002/JSL.3000090203","DOIUrl":"https://doi.org/10.1002/JSL.3000090203","url":null,"abstract":"The rationale is presented for the development of 315 °C bulk oil high-temperature hydraulic fluids for future US Air Force systems. Four chemical classes of candidate fluids worthy of consideration are described along with their relative merits and limitations. The four fluids are: mineral oil based MIL-H- 27601A, a synthetic hydrogenated polyalphaolefin, a synthetic silahydrocarbon (tetra alkyl silane), and a linear perjluoropolyalkylether. Questions for consideration in selecting a candidate high-temperature hydraulic fluid are presented and discussed in relation to the intended specific application.","PeriodicalId":17149,"journal":{"name":"Journal of Synthetic Lubrication","volume":"64 1","pages":"115-125"},"PeriodicalIF":0.0,"publicationDate":"1992-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73725662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
EHL traction and related rheological parameters under high temperature conditions 高温条件下EHL牵引力及相关流变参数
Journal of Synthetic Lubrication Pub Date : 1992-04-01 DOI: 10.1002/JSL.3000090104
M. Muraki
{"title":"EHL traction and related rheological parameters under high temperature conditions","authors":"M. Muraki","doi":"10.1002/JSL.3000090104","DOIUrl":"https://doi.org/10.1002/JSL.3000090104","url":null,"abstract":"","PeriodicalId":17149,"journal":{"name":"Journal of Synthetic Lubrication","volume":"470 1","pages":"29-43"},"PeriodicalIF":0.0,"publicationDate":"1992-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82419064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Wear characteristics of some internally lubricated and reinforced engineering polymer composites 一些内润滑和增强工程聚合物复合材料的磨损特性
Journal of Synthetic Lubrication Pub Date : 1992-04-01 DOI: 10.1002/JSL.3000090105
U. Tewari, J. Bijwe, C. M. Logai
{"title":"Wear characteristics of some internally lubricated and reinforced engineering polymer composites","authors":"U. Tewari, J. Bijwe, C. M. Logai","doi":"10.1002/JSL.3000090105","DOIUrl":"https://doi.org/10.1002/JSL.3000090105","url":null,"abstract":"An interesting characteristic of abrasion is the dependence of the wear rate on the particle size of the abrasive grits used to lubricate the abrasive papers. Three types of polymers, PTFE, PA, PI, several of their composites, and three metals were selected for studying the effect of particle size on wear rate. The pins were abraded against Sic abrasive papers of various mesh sizes under constant loading in multi-pass conditions. For some of the polymers and their composites (PA and PEI) the size effect on wear rate was similar to that for the metals. Beyond a critical particle size, no increase in wear was found with increasing particle size. On the other hand, PTFE, PI, and their composites showed the opposite effect. SEM and EDAX were used to investigate the related mechanisms.","PeriodicalId":17149,"journal":{"name":"Journal of Synthetic Lubrication","volume":"26 1","pages":"45-61"},"PeriodicalIF":0.0,"publicationDate":"1992-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78154358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Lubrication characteristics of oils and greases applied to ball bearings for use in vacuo 真空球轴承用油和润滑脂的润滑特性
Journal of Synthetic Lubrication Pub Date : 1992-04-01 DOI: 10.1002/JSL.3000090103
K. Seki, M. Nishimura
{"title":"Lubrication characteristics of oils and greases applied to ball bearings for use in vacuo","authors":"K. Seki, M. Nishimura","doi":"10.1002/JSL.3000090103","DOIUrl":"https://doi.org/10.1002/JSL.3000090103","url":null,"abstract":"Three experiments were conducted to evaluate the long-term running performance in vacuo of ball bearings lubricated by a synthetic oil and grease. The first experiment was carried out using ball bearings of a shielded deep-groove type (no. 6204) filled with a grease containing perfluoropolyalkylether (PFPAE) as a base oil and TFE as a thickener. Tests were done at room temperature in a vacuum of 10−4∼10−5 Pa mainly at a rotational speed of 2,000 r/min under an axial load of 50N. The bearings were successfully run for a period of 24,400 h, which corresponds to 3 × 109 revolutions. About 10% in weight of the grease was lost during the test. An inspection of the running accuracy of the bearings tested showed negligible change. The degradation of the grease inspected by FTIR was found to be negligible. A change in the molecular weight distribution of the grease was not observed during the test. The second experiment was conducted with angular-contact-type ball bearings (no. 7204), with retainers impregnated with PFPAE oils. Exploratory work was done using full-component-type ball bearings (no. 7204), lubricated by a heat-cured PFPAE oils, both in vacuo and in an air environment. The bearings were run for 280 h (5.0 × 106 revolutions) in air at a speed of 300 r/min under an axial load of 50 N, but failed to operate afer 25 h (4.5 × 105 revolutions) in a vacuum.","PeriodicalId":17149,"journal":{"name":"Journal of Synthetic Lubrication","volume":"11 1","pages":"17-27"},"PeriodicalIF":0.0,"publicationDate":"1992-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78261900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Effects of kinds of oil on power transmission: Efficiency of planetary traction drives 各种油对动力传动的影响:行星牵引传动的效率
Journal of Synthetic Lubrication Pub Date : 1992-04-01 DOI: 10.1002/JSL.3000090102
A. Ishibashi, K. Sonoda
{"title":"Effects of kinds of oil on power transmission: Efficiency of planetary traction drives","authors":"A. Ishibashi, K. Sonoda","doi":"10.1002/JSL.3000090102","DOIUrl":"https://doi.org/10.1002/JSL.3000090102","url":null,"abstract":"One of the most interesting problems in traction drives is the analysis of their power transmission efficiency. Using an experimental two-disk machine and two planetary traction drives, together with fourteen test oils, it is shown that the power transmission efficiency can increase up to 97% in the case of an experimental planetary traction drive. The synthetic traction oils bring about a lower efficiency than mineral oils when the output torque is small. This is ascribed to their higher traction coefficients which cause larger friction in the rolling bearings which support the rolling elements.","PeriodicalId":17149,"journal":{"name":"Journal of Synthetic Lubrication","volume":"140 1","pages":"1-16"},"PeriodicalIF":0.0,"publicationDate":"1992-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80987049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Comparison of synthetic aromatic oil and crude oil resistances against the influence of nuclear radiation 合成芳香油与原油抗核辐射影响性能的比较
Journal of Synthetic Lubrication Pub Date : 1991-10-01 DOI: 10.1002/JSL.3000080305
Peter Kostolányi, L. Szücs, J. Ruman
{"title":"Comparison of synthetic aromatic oil and crude oil resistances against the influence of nuclear radiation","authors":"Peter Kostolányi, L. Szücs, J. Ruman","doi":"10.1002/JSL.3000080305","DOIUrl":"https://doi.org/10.1002/JSL.3000080305","url":null,"abstract":"The use of lubricants in conditions of radiation, as in nuclear power installation, poses certain problems for the stability of the lubricant. These include (1) changes in viscosity, (2) evolution of gases, (3) in air, accelerated oxidation, (4) secondary effects such as separation of additives and demulsibility deterioration. In this paper are reported the results of experiments on changes in kinematic viscosity and acid base number of mineral base oils and a synthetic oil.","PeriodicalId":17149,"journal":{"name":"Journal of Synthetic Lubrication","volume":"51 1","pages":"213-218"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91213170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A study of high‐boiling alkylbenzene fractions as synthetic lubricants for refrigerators 高沸点烷基苯馏分作为冰箱合成润滑剂的研究
Journal of Synthetic Lubrication Pub Date : 1991-10-01 DOI: 10.1002/JSL.3000080304
S. Yotov, C. Antonov, V. Alexandrov, M. Hinkova, S. Ivanov
{"title":"A study of high‐boiling alkylbenzene fractions as synthetic lubricants for refrigerators","authors":"S. Yotov, C. Antonov, V. Alexandrov, M. Hinkova, S. Ivanov","doi":"10.1002/JSL.3000080304","DOIUrl":"https://doi.org/10.1002/JSL.3000080304","url":null,"abstract":"The properties of synthetic oils based on high-boiling alkylbenzenes - good low temperature behaviour, thermo-oxidative, anticorrosive and hydrolylic stability, make them suitable candidates as lubricating oils for refrigerator machinery. This paper reports the results of investigations by column adrorption chromatography and GC-MS into the nature and properties of three high boiling alkylbenzene fractions, and their behaviour when compounded into candidate refrigerator oils.","PeriodicalId":17149,"journal":{"name":"Journal of Synthetic Lubrication","volume":"17 1","pages":"207-211"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81873570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A novel family of traction fluids deriving from molecular design 源自分子设计的新型牵引流体
Journal of Synthetic Lubrication Pub Date : 1991-10-01 DOI: 10.1002/JSL.3000080303
M. P. Dare-Edwards
{"title":"A novel family of traction fluids deriving from molecular design","authors":"M. P. Dare-Edwards","doi":"10.1002/JSL.3000080303","DOIUrl":"https://doi.org/10.1002/JSL.3000080303","url":null,"abstract":"An investigation has been undertaken into the fundamental molecular design features that may be seen to correlate with high traction coefficients of lubricants operating under elastohydrodynamic conditions. With the assistance of computer-aided molecular mechanics modelling, a novel family of fluids has been designed which display excellent tractional performance. Prospects for the further development of these modelling techniques and also the practical usage of the designed fluids are discussed.","PeriodicalId":17149,"journal":{"name":"Journal of Synthetic Lubrication","volume":"14 1","pages":"197-205"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88765550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
Influence of reinforcement and lubrication on abrasive wear performance of polyamide 增强和润滑对聚酰胺磨粒磨损性能的影响
Journal of Synthetic Lubrication Pub Date : 1991-10-01 DOI: 10.1002/JSL.3000080302
J. Bijwe, J. Mathur, U. Tewari
{"title":"Influence of reinforcement and lubrication on abrasive wear performance of polyamide","authors":"J. Bijwe, J. Mathur, U. Tewari","doi":"10.1002/JSL.3000080302","DOIUrl":"https://doi.org/10.1002/JSL.3000080302","url":null,"abstract":"This paper presents the results of studies on the wear performance of various composites of polyamide (nylon 6,6) reinforced with short carbon fibres and lubricated with a solid lubricant, PTFE, under adverse sliding conditions (abrasive wear). The effects of increasing amounts of fillers, fibre orientation, and experimental parameters such as load, and abrading particle size were investigated. The studies revealed that fillers that are very much suitable for adhesive wear applications are detrimental for the abrasive wear mode. Moreover, wear performance showed deterioration with increasing amount of filler concentration. The combination of heterogeneous fillers proved to be detrimental for wear performance. Efforts were made to correlate these investigations with appropriate mechanical properties. It was found that wear performance was greatly influenced by selected experimental parameters. Worn surfaces were examined with SEM to have better insight of the wear mechanism.","PeriodicalId":17149,"journal":{"name":"Journal of Synthetic Lubrication","volume":"27 1","pages":"177-195"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81027857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
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