氟硅油的结构表征

Fluorosilicone oil is polysiloxane with alkyl side chains containing fluorine, and because of its excellent thermal oxidation stability, cold flow property and cryogenic property, it can be widely used as a high temperature lubricant in the field of military aerospace industry. Two kinds of fluorosilicone oils, FSiO-a and FSiO-b, were synthesized by different pro- cessing means. FTICR MS was used to collect the information on composition and structure of the two polymers, respec- tively. The test results show that the two fluorosilicone oils have different contents of fluorine-containing chain segments (m/ n value), the maximum distribution of m/n value of FSiO-a oil ranges from 0.22 to 0.25, and that of FSiO-b oil ranges from 0.4 to 0.67. Difference in synthesis techniques makes this discrepancy and affects the quality and thermal stability of the fluoro- silicone oils.     

重负荷柴油机润滑油技术的发展与应用

通过介绍国内外重负荷柴油机润滑油发展和应用现状,提出我国重负荷柴油机润滑油发展方向,并报道中国石化石油化工科学研究院最新研制出的１０Ｗ／４０ＣＤ＾＋柴油机润滑油在高增压直喷柴油机上的应用结果。     

氟硅油老化试验条件与稳定性研究

使用一种新改进的老化试验装置,对两种型号的氟硅油FSO-2和FSO-A进行加速老化试验,对老化试验条件进行考察,并采用凝胶色谱（GPC）对氟硅油进行相对分子质量分析,考察油样性质随老化时间的变化。老化试验结果表明：250 ℃以下两种型号的氟硅油均未出现凝胶,250 ~300 ℃下两种油样均发生老化反应。并且,在300 ℃下,随着老化时间的延长,两种氟硅油的相对分子质量和相对分子质量分布都明显增加。通过GPC对老化规律的分析,得出在300 ℃下,FSO-2和FSO-A的老化机理一致,但FSO-2较为稳定,寿命较长。