摘要
采用气相色谱(GC)、热重分析法(TGA)、加压差示扫描量热法(PDSC)、凝胶色谱法(GPC)、旋转氧弹法等表征方法分析煤基低黏度茂金属聚α-烯烃(mPAO)的性能,并与对比样长链α-烯烃合成PAO进行对比。结果表明:煤基mPAO的黏度指数最高达到了147,黏温性能优于对比样;倾点普遍比对比样低6℃,低温动力黏度和低温泵送黏度也都小于对比样,表明煤基mPAO具有更好的低温性能;两者闪点相当,都在310℃开始快速热降解,煤基mPAO具有更高的完全分解温度;长链α-烯烃合成PAO具有更低的挥发度和更短的氧化诱导期,化学稳定性优于煤基mPAO。
Coal-based low viscosity polyα-olefin produced by metallocene catalyst(mPAO)were characterized by gas chromatography(CC),thermogravimetry(TGA),pressure differential scanning calorimetry(PDSC),gel chromatography(GPC),rotating oxygen bomb method,and the performances were compared with commercial available PAO synthesized by long chainsα-olefins.Results show that viscosity index of coal-based mPAO is up to 147,and viscosity-temperature capability is better than that of commercial available PAO.The pour point is generally 6 C lower than the commercial available PAO,and low-temperature dynamic viscosity and low-temperature pumping viscosity are also lower than the commercial available PAO,indicating that coal-based mPAO has better low temperature performance.The flash points of the two products are the same,and both of them start rapid thermal degradation at 310℃.The coal-based mPAO has a higher complete decomposition temperature.The commercial available PAO has lower volatility.The shorter oxidation induction time indicates that the commercial available PAO has better oxidation stability.
作者
张力
李久盛
徐燕辉
许健
ZHANG Li;LI Jiusheng;XU Yanhui;XU Jian(Shanxi Lu'an Chemical Co.,Ltd.,Changzhi Shanxi 046000,China;Laboratory of Advanced Lubricating Material,Shanghai Advanced Research Institute,CAS,Shanghai 201210,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2023年第12期124-129,共6页
Lubrication Engineering
基金
山西省揭榜招标项目(20201101006)。
