Effect of particle morphology and concentration on density and viscosity of graphite nanolubricant

LOU Jiangfeng; ZHANG Hua; WANG Ruixiang; LI Meng

doi:10.3969/j.issn.0438-1157.2014.10.014

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Effect of particle morphology and concentration on density and viscosity of graphite nanolubricant

更新时间：2025-12-10

- Effect of particle morphology and concentration on density and viscosity of graphite nanolubricant
- CIESC Journal Issue 10, Pages: 3846-3851(2014)
- 作者机构：
  
  1. 上海理工大学能源与动力工程学院,上海,200093
  2. 北京建筑大学环境与能源工程学院,北京,100044
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.10.014
  CLC： B61+2TB383
- Online First：05 October 2014，
  
  Published：05 October 2014
- 稿件说明：
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LOU Jiangfeng, ZHANG Hua, WANG Ruixiang, et al. Effect of particle morphology and concentration on density and viscosity of graphite nanolubricant[J]. CIESC Journal, 2014, (10): 3846-3851.
DOI：

LOU Jiangfeng, ZHANG Hua, WANG Ruixiang, et al. Effect of particle morphology and concentration on density and viscosity of graphite nanolubricant[J]. CIESC Journal, 2014, (10): 3846-3851. DOI： 10.3969/j.issn.0438-1157.2014.10.014.

摘要

采用硅烷偶联剂KH570对两种形态的纳米石墨进行表面改性，配制了稳定性良好的环烷基纳米冷冻机油。利用振荡密度仪和旋转黏度计对纳米石墨冷冻机油（纳米石墨为粒状和片状，质量分数为0.05%、0.1%、0.2%、0.5%、1%、1.5%、2%）在不同温度（288～343 K）下的密度和黏度进行了测试。结果表明：纳米石墨冷冻机油的密度和黏度随着纳米颗粒浓度的增加而增大；相同浓度下添加片状石墨的纳米冷冻机油密度大于粒状，添加粒状石墨的纳米冷冻机油黏度大于片状，且在温度高于313 K时黏度也有明显上升；基于纳米石墨的浓度、粒径及形态开发了密度和黏度关联式，其中密度计算值与实验数据基本吻合，黏度计算值与90%的实验数据偏差在±5%以内。

Abstract

Naphthenic base nanolubricants with good stability were prepared by modifying nano graphite in two forms with silane coupling agent KH570. An oscillating densitometer and a rotary viscometer were used to test the density and viscosity of graphite nanolubricants with mass fraction of 0.05%

0.1%

0.2%

0.5%

1.5%

and 2% in a temperature range from 288 K to 343 K. The results show that the density and viscosity of graphite nanolubricants increase with the increase of nanoparticle mass fraction. The densities of nanolubricants adding plate-shape graphite are higher than those with spherical graphite at the same mass fraction

while the viscosity shows opposite trend. The viscosity increases obviously at the temperature higher than 313 K with spherical graphite added. Correlations for the density and viscosity are developed as a function of nanoparticle concentration

particle size and shape. The correlation for density agrees well with experimental results

with 90% of the viscosities predicted within ±5% deviation from the measurement.

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