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The yield stress of model waxy oil after incorporation of organic montmorillonite

机译：有机蒙脱土掺入后模型蜡质油的屈服应力

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摘要

To study the influence of organic montmorillonite (OMMT) on the yield stress of the model waxy oil (LMO) under dynamic cooling, OMMT was prepared through ion exchange of the sodium montmorillonite with dimethyldioctadecylammonium chloride (DOAC). The incorporation of OMMT lead to a great reduction of the yield stress, which could be explained by the inhibition effect of OMMT on the wax gelation. For 100 ppm OMMT loading, the yield stress reduced by 74.1% at 36 degrees C. The inhibition effect was realized through decreasing the wax crystallinity, reducing the crystal dimension and introducing the electrostatic repulsion between the crystal particles. The role of thermal history on the yield stress was also studied. Compared with the pure LMO, the OMMT-doped LMO showed different dependence level on the thermal history, but similar trend with that. High testing temperature and short holding time facilitated a lower yield stress. Due to the presence of different shear stress during cooling, the cooling rate showed a complicated effect on the yielding process. (C) 2017 Published by Elsevier Ltd.
机译：为了研究动态冷却条件下有机蒙脱土（OMMT）对模型蜡质油（LMO）屈服应力的影响，通过蒙脱土钠与二甲基二十八烷基氯化铵（DOAC）的离子交换制备了OMMT。 OMMT的引入导致屈服应力大大降低，这可以通过OMMT对蜡凝胶化的抑制作用来解释。对于100 ppm OMMT负载，在36摄氏度时屈服应力降低了74.1％。通过降低蜡的结晶度，减小晶体尺寸并在晶体颗粒之间引入静电排斥来实现抑制效果。还研究了热历史对屈服应力的作用。与纯LMO相比，掺杂OMMT的LMO对热历史的依赖性程度不同，但趋势相似。较高的测试温度和较短的保持时间有助于降低屈服应力。由于冷却过程中存在不同的剪切应力，冷却速率对屈服过程表现出复杂的影响。 （C）2017由Elsevier Ltd.发布

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  • 来源
    《Fuel》 |2017年第1期|570-578|共9页
  • 作者

    Gao Chong; He Cunzhe; Ding Yanfen; Chen Juan; Wang Feng; Liu Peng; Zhang Shimin; Li Zengxi; Yang Mingshu;

  • 作者单位

    Univ Chinese Acad Sci, Sch Chem & Chem Engn, 19 A Yuquan Rd, Beijing 100049, Peoples R China;

    Univ Chinese Acad Sci, Sch Chem & Chem Engn, 19 A Yuquan Rd, Beijing 100049, Peoples R China|Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Engn Plast, Zhongguancun North First St 2, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Engn Plast, Zhongguancun North First St 2, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Engn Plast, Zhongguancun North First St 2, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Engn Plast, Zhongguancun North First St 2, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Engn Plast, Zhongguancun North First St 2, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Engn Plast, Zhongguancun North First St 2, Beijing 100190, Peoples R China;

    Univ Chinese Acad Sci, Sch Chem & Chem Engn, 19 A Yuquan Rd, Beijing 100049, Peoples R China;

    Univ Chinese Acad Sci, Sch Chem & Chem Engn, 19 A Yuquan Rd, Beijing 100049, Peoples R China|Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Engn Plast, Zhongguancun North First St 2, Beijing 100190, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Organic montmorillonite; Model waxy oil; Yield stress; Thermal history;

    机译：有机蒙脱土;蜡质模型油;屈服应力;热历史;

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