Journal of Synthetic Lubrication最新文献_第3页

Polymer formation during thermal-oxidative ageing of aviation turbine oils 航空涡轮油热氧化老化过程中聚合物的形成

Journal of Synthetic Lubrication Pub Date : 1993-04-01 DOI: 10.1002/JSL.3000100102

H. Fuchs, A. Zeman

引用次数: 15

Testing, application, and future development of environmentally friendly ester base fluids 环保型酯基流体的测试、应用及未来发展

Journal of Synthetic Lubrication Pub Date : 1993-04-01 DOI: 10.1002/JSL.3000100105

G. V. D. Waal, Dirk Kenbeek

{"title":"Testing, application, and future development of environmentally friendly ester base fluids","authors":"G. V. D. Waal, Dirk Kenbeek","doi":"10.1002/JSL.3000100105","DOIUrl":"https://doi.org/10.1002/JSL.3000100105","url":null,"abstract":"Biodegradation test methods have been compared with regard to test conditions and test parameters. It has been shown that three methods are, in principle, suitable for non-water soluble products. These are the Sturm test (OECD no. 301B), the MITI test (OECD 301 C), and the CEC L-33-T-82 test method. A comparison in an actual test showed that the CEC test gives the highest biodegradation values, while the Sturm test and the MITI test give lower values. It is noted that the CEC test measures the amount of material used for both energy production and growth of the biomass, while the other methods measure only the material used for energy production. A possible explanation for the difference between the Sturm and the MITI test results is given. The CEC test is shown to be more suitable for the lubricant industry. Applications of biodegradable lubricants are reviewed, particularly hydraulic fluids. It is shown that rape seed oil (natural ester) and synthetic polyol esters have similarities regarding structure but also significant differences. This results in much better thermal and oxidative stability for the synthetic esters. These also offer the possibility of making a range of products of different ISO grades with similar properties. \u0000 \u0000 \u0000 \u0000Brief consideration is given to future potential, notably for biodegradable four-stroke lubricants. Finally, there is a timely reminder that, owing to the present limited availability of natural oils and fats and their cost, only 19% of the market for mineral oil base fluids could be replaced by natural oils and fats and their derivatives.","PeriodicalId":17149,"journal":{"name":"Journal of Synthetic Lubrication","volume":"16 1","pages":"67-83"},"PeriodicalIF":0.0,"publicationDate":"1993-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73351998","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: 22

Oil soluble polyethers in automotive crankcase lubricants 汽车曲轴箱润滑油中的油溶性聚醚

Journal of Synthetic Lubrication Pub Date : 1993-04-01 DOI: 10.1002/JSL.3000100104

R. Cracknell

引用次数: 3

The film‐forming properties of polyalkylene glycols 聚烷基二醇的成膜性能

Journal of Synthetic Lubrication Pub Date : 1993-04-01 DOI: 10.1002/JSL.3000100103

M. Aderi, G. J. Johnsto, H. Spikes, T. Balson, M. G. Emery

引用次数: 10

Tris(2-octyldodecyl)cyclopentane, a low volatility, wide liquid range, hydrocarbon fluid 三(2-辛基十二烷基)环戊烷，一种挥发性低、液体范围宽的烃类流体

Journal of Synthetic Lubrication Pub Date : 1992-10-01 DOI: 10.1002/JSL.3000090305

C. G. Veier, E. W. Casserly, S. Gunsel

引用次数: 12

Chlorotrifluoroethylene oligomer based nonflammable hydraulic fluid. 1 Fluid, additive, and elastomer development 基于三氟氯乙烯低聚物的不可燃液压油。流体、添加剂和弹性体的开发

Journal of Synthetic Lubrication Pub Date : 1992-10-01 DOI: 10.1002/JSL.3000090302

L. J. Gschweder, D. Mattie, C. E. Syder, W. M. Warer, C. V. Brocklin

{"title":"Chlorotrifluoroethylene oligomer based nonflammable hydraulic fluid. 1 Fluid, additive, and elastomer development","authors":"L. J. Gschweder, D. Mattie, C. E. Syder, W. M. Warer, C. V. Brocklin","doi":"10.1002/JSL.3000090302","DOIUrl":"https://doi.org/10.1002/JSL.3000090302","url":null,"abstract":"A chlorotrifluoroethylene (CTFE) based nonflammable hydraulic fluid for use in the −54 °C to 175 °C temperature range has been developed for use in future aircraft and armoured land vehicles to reduce fire losses and improve survivability. The desired flammability, chemical, and physical properties of a non- flammable hydraulic fluid were defined in the 1970s and extensive screening tests were performed to determine the best candidate nonflammable hydraulic fluid basestock. CTFE was selected because it had the best overall properties of all the candidates investigated. Structurelproperty correlation studies were conducted better to understand the behaviour capabilities and limitations of the CTFE basestock. Extensive research and development have been per- formed to develop soluble, effective antiwear and antirust additives to improve some of the critical properties of CTFE. A successful formulation utilising a stabilised zinc, containing corrosion inhibitor and a sulphonamide antiwear additive, has been developed which meets all temperature, lubricity, compatibility, and thermal stability requirements. Research was concurrently conducted to develop elastomers and seals compatible with the CTFE fluid. Several materials have been developed which are usable in somewhat limited applications and Viton GLT has been found to be successful for wide temperature range applications. This paper also discusses toxicity studies and results, environmental effects, future plans and applications, and the current military specification, MIL-H-53119.","PeriodicalId":17149,"journal":{"name":"Journal of Synthetic Lubrication","volume":"117 1","pages":"187-203"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89223511","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: 8

Influence of the size, geometry, and material of the rollers on EHD traction 滚轮的尺寸、几何形状和材料对EHD牵引的影响

Journal of Synthetic Lubrication Pub Date : 1992-10-01 DOI: 10.1002/JSL.3000090303

M. Muraki, K. Sakaguchi

{"title":"Influence of the size, geometry, and material of the rollers on EHD traction","authors":"M. Muraki, K. Sakaguchi","doi":"10.1002/JSL.3000090303","DOIUrl":"https://doi.org/10.1002/JSL.3000090303","url":null,"abstract":"The influence of the parameters relating to the rolling elements on traction in EHD contacts is experimentally studied on a two-roller machine, in which experiments with point contacts are conducted for two paraffinic mineral oils, a synthetic naphthene, and a synthetic ester. Firstly, it is shown that the same traction curves are obtained in both internal and external contacts when the effective radius in rolling direction of the rollers is equal. The effect of an increase in the size of the rollers is to increase the film thickness and this results in a gentle decline in the maximum traction coefficient. As the effective radius in transverse direction is increased, so the traction decreases for a paraffinic mineral oil, while that for a synthetic naphthene remains constant independent of the geometry of the rollers. Finally, the effect of the material of the rollers is studied, employing rollers made of steel, ceramics, phosphorus bronze, brass, and aluminium alloy. The traction obtained under an identical normal load can be arranged according to the effective elastic modulus of the rollers for each oil. However, under identical contact pressure the same maximum traction curve is obtained independent of the material, but the decline in traction in the thermal region is slightly steeper with the ceramic than with the steel rollers because of the difference in the temperature rise of the fluid film.","PeriodicalId":17149,"journal":{"name":"Journal of Synthetic Lubrication","volume":"134 1","pages":"205-221"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73268855","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

A naphthenic oil of hydrogenated coal tar distil- late as a lubricant with low solidification pressure 一种由氢化煤焦油馏出物制成的环烷油，具有低凝固压力

Journal of Synthetic Lubrication Pub Date : 1992-10-01 DOI: 10.1002/JSL.3000090304

T. Sakai, T. Murakami, Y. Yamamoto, H. Uchiyama, T. Komoto, T. Tezuka

引用次数: 5

The shear stress properties of ester lubricants in elastohydrodynamic contacts 酯类润滑剂在弹性流体力学接触中的剪切应力特性

Journal of Synthetic Lubrication Pub Date : 1992-07-01 DOI: 10.1002/JSL.3000090202

H. Chang, H. Spikes, T. F. Bunemann

引用次数: 19

Environmentally considerate ester lubricants for the automotive and engineering industries 适用于汽车和工程行业的环保酯润滑油

Journal of Synthetic Lubrication Pub Date : 1992-07-01 DOI: 10.1002/JSL.3000090205

S. Randles

引用次数: 107