共查询到19条相似文献,搜索用时 109 毫秒
1.
2.
使用全自动中温闪点仪,采用连续闭杯法测定了正癸烷试剂的闪点。建立了数学模型,并对闪点测定结果进行了不确定度评定。根据标准规定对重复性、温度传感器、压力传感器、电弧点火频率以及数值修约等不确定度分量进行了量化处理,计算了合成标准不确定度和扩展不确定度。结果表明,正癸烷试剂的闭杯闪点为(50.0±1.0)℃,包含因子,置信概率约95%。 相似文献
3.
4.
5.
润滑油开口闪点不确定度的评定 总被引:1,自引:1,他引:0
依据JJF-1059-1999《测定不确定度的表示》及GB/T3536-2008《石油产品闪点和燃点测定法》,按经验方法的评定程序,分析了润滑油开口闪点测定过程中,升温速度的不均匀性、温度计的计量性、大气压等因素对测量结果引入的不确定度,量化了各分量的标准不确定度,进而得出了合成标准不确定度和扩展不确定度。评定结果为(244±3)℃,k=2,置信度为95%。建立的不确定度评定方法适用于润滑油开口闪点的不确定度分析。 相似文献
6.
依据最新发布的3号喷气燃料产品标准要求,闭口闪点改为用阿贝尔闭口杯法迚行测定。本文建立了该闭口闪点斱法的测量不确定度的数学模型,分析了不确定度的来源,幵计算了相对标准不确定度分量、合成标准不确定度和扩展不确定度。 相似文献
7.
《中国石油和化工标准与质量》2018,(20)
依据宾斯基马丁闭口杯法,使用DS-IISB型自动闭口闪点仪测定了车用柴油的闭口闪点,通过分析数学模型及操作过程确定不确定度分量来源,计算扩展不确定度,为检测结果可靠性提供参考。 相似文献
8.
9.
依据JJF1384-2012校准规范,使用闪点标准物质测定克利夫兰开口杯法闪点仪闪点示值误差,在此基础上对其示值误差测量结果不确定度进行了评估,分析了各项不确定度分量的来源,评定了合成标准不确定度和扩展不确定度,并对仪器测量范围内校准测量能力(CMC)表示方法进行了初步探讨。 相似文献
10.
11.
介绍FP565G2全自动TAG闭口闪点测试仪的工作原理及测定方法,通过使用FP56 5G2自动闭口闪点仪对已知闭口闪点的样品进行测定,分析自动闪点仪使用的影响因素并对操作进行改进。将FP565G2测定结果与现行闭口闪点的国家标准GB/T261的测试结果进行比较,FP565G2自动闭口闪点仪重复性要求和精确度要求都在标准方法允许的误差范围内。 相似文献
12.
13.
Flash point and fire hazard analysis of three organic fuels and their aqueous solutions at low pressures 下载免费PDF全文
To study the low pressure influence on the flash point and fire hazard of organic fuels and their aqueous solutions, a series of experiments has been conducted to measure the open‐cup and closed‐cup flash points of methanol, ethanol, and n‐decane aqueous solutions including different mole fractions under different static pressures ranging from 35 to 101 kPa. The results show that both the pressure and fuel mole fraction have a nonlinear correlation with the flash point of the miscible fuel specimens like the correlation provided in this paper. For the partially miscible fuel specimens with a lower density than water, the water content has almost no influence on the flash point. The fire risks of the experimental results were analysed based on the standard GB50160‐2008, which shows that the fire risk becomes higher at low pressures, and there is a critical pressure at the turning point of the change in fire classification. A method to achieve the critical low pressure of different fuels or aqueous solutions from the fire hazard classification is derived in this paper. 相似文献
14.
P. Pruvda 《European Journal of Lipid Science and Technology》1981,83(4):161-164
Fire Technical Parameters of the Most Important Organic Solvents Used in Fainting Materials Experimental works were carried out concerning the determination of flash point of white spirit using Abel-Pensky closed cup apparatus. From the main organic solvents are stated the values of flash point determined in closed cup, in open cup, values without the way of determination, the values of autoignition temperature, the values of lower and upper flammability limits. 相似文献
15.
16.
17.
介绍了涂料生产中常用溶剂的闪点,分析了国内外涂料闪点的安全限量标准,并提出了控制涂料闪点的建议,以期为规范我国涂料的生产和使用,以及为涂料闪点限量标准的制修订提供参考。 相似文献
18.
The flash point is one of the most important physical properties used to determine the potential for fire and explosion hazards
of industrial materials. The purpose of this study was to measure and predict the lower flash points for the binary mixtures
to aid in evaluating the safety of flammable liquid mixtures. The lower flash points for the flammable binary systems, n-hexanol+propionic
acid, n-butyric acid+m-xylene and n-pentanol+n-butanol, were measured by Setaflash closed cup tester. The experimentally derived
data were correlated with the Wilson and UNIQUAC (UNIversal QUuasi Chemical) equations using the binary interaction parameters.
Both equations correlated with a good accuracy. 相似文献