共查询到19条相似文献,搜索用时 45 毫秒
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详细介绍了采用全自动黏度仪测定悬浮法PVC树脂平均聚合度的原理、操作步骤及数据计算方法.通过试验对比研究了全自动黏度仪及人工手动测得的PVC树脂平均聚合度数据,结果表明全自动黏度仪法较手动检测法操作简便、快捷,测定结果精度高,在PVC行业具有推广应用价值. 相似文献
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从润滑油运动黏度测定的恒温浴温度、黏度计的清洁程度、润滑油机杂及含水量、工作毛细管黏度计常数的准确性等几方面,对润滑油运动黏度测定值的影响因素进行探讨. 相似文献
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介绍美国RSV-1600型旋转高温黏度仪的工作原理,探讨该仪器对煤灰黏度的检测方法和煤灰黏度曲线的拟合,指出使用该仪器应注意的事项. 相似文献
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介绍了国内润滑油对黏度指数改进剂的需求现状和PIB、PMA、OCP、HSD黏度指数改进剂的性能,重点介绍了氢化苯乙烯-双烯共聚物(HSD)的合成及其结构特点,指出研究开发HSD类黏度指数改进剂的是苯乙烯-丁二烯共聚物的又一应用方向。 相似文献
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在聚醚多元醇的黏度检测中,将安东帕SVM3000型黏度计与传统的NDJ型黏度计进行对比,发现前者更加简便、迅速、准确,效率更高.这种简捷、迅速的聚醚多元醇黏度检测方法可很好地满足聚醚多元醇的黏度指标检测要求. 相似文献
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涂料粘度测度Ⅰ.气泡粘度计法 总被引:1,自引:0,他引:1
粘度是涂料产品的重要指标之一,是测定漆料中聚合物分子量大小的可靠方法,粘度的测定对于涂料生产过程的控制、保证产品质量十分必要。介绍了气泡粘度计的测量原理、规格种类、测量方法及影响因素。 相似文献
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The kinematic viscosity values of the saturated liquid dtmethoxy memane are reported over the temperature range from 248. 467 to 353. 154 K along the saturation line made with a calibrated Ubbelohdetype capillary viscometer. The total experimental uncertainty is less than 0. 71%. In addition, the results were correlated as a function of temperature for the kinematic viscosity equation of saturated liquid. The absolute average deviation and the maximum deviation of the experimental results from the correlated equation are 0. 35% and 1.45%, respectively. 相似文献
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润滑剂EBS的合成与应用 总被引:2,自引:0,他引:2
范卫娟 《现代塑料加工应用》1998,10(3):50-51,56
综述了乙撑双硬脂酰胺(EBS)的各种合成方法,并详细介绍了这种润滑在各领域的应用。 相似文献
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Kyung C. Kwon Yoonkook Park Tamara Floyd-Smith Nader Vahdat Erica Jackson Claudell Burnell Tikia Allen Paul Jones 《Chemical Engineering Communications》2008,195(6):687-705
A hydrostatic head viscometer and its novel viscosity equation were developed to determine flow characteristics of Newtonian and non-Newtonian fluids. The objective of this research is to test capabilities of the hydrostatic head viscometer and its novel non-Newtonian viscosity equation by characterizing rheological behaviors of well-known polyethylene oxide aqueous solutions as non-Newtonian fluids with 60 wt.% sucrose aqueous solution as a reference/calibration fluid. Non-Newtonian characteristics of 0.3-0.7 wt.% polyethylene oxide aqueous solutions were extensively investigated with the hydrostatic head viscometer and its non-Newtonian viscosity equation over a 294-306 K temperature range, a 0.14-40 Reynolds number range, and a 55-784 s-1 shear rate range at atmospheric pressure. Dynamic viscosity values of 60 wt.% sucrose aqueous solution were determined with the calibrated hydrostatic head viscometer and its Newtonian viscosity equation over a 3-5 Reynolds number range at 299.15 K and atmospheric pressure and compared with the literature dynamic viscosity value. 相似文献
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Kyung C. Kwon Yoonkook Park Tamara Floyd-Smith Nader Vahdat Erica Jackson Claudell Burnell 《Chemical Engineering Communications》2013,200(6):687-705
A hydrostatic head viscometer and its novel viscosity equation were developed to determine flow characteristics of Newtonian and non-Newtonian fluids. The objective of this research is to test capabilities of the hydrostatic head viscometer and its novel non-Newtonian viscosity equation by characterizing rheological behaviors of well-known polyethylene oxide aqueous solutions as non-Newtonian fluids with 60 wt.% sucrose aqueous solution as a reference/calibration fluid. Non-Newtonian characteristics of 0.3–0.7 wt.% polyethylene oxide aqueous solutions were extensively investigated with the hydrostatic head viscometer and its non-Newtonian viscosity equation over a 294–306 K temperature range, a 0.14–40 Reynolds number range, and a 55–784 s?1 shear rate range at atmospheric pressure. Dynamic viscosity values of 60 wt.% sucrose aqueous solution were determined with the calibrated hydrostatic head viscometer and its Newtonian viscosity equation over a 3–5 Reynolds number range at 299.15 K and atmospheric pressure and compared with the literature dynamic viscosity value. 相似文献
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介绍齐鲁石化第二化肥厂化工机械应用“倍力”抗磨剂,在节能、缓解机器故障方面取得的效果,指出在扩大应用范围时要注意的问题。 相似文献