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首页> 外文期刊>Fuel >Influence of maleic anhydride-co-methyl benzyl acrylate copolymers modified with long-chain fatty amine and long-chain fatty alcohol on the cold flow properties of diesel fuel
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Influence of maleic anhydride-co-methyl benzyl acrylate copolymers modified with long-chain fatty amine and long-chain fatty alcohol on the cold flow properties of diesel fuel

机译：长链脂肪胺和长链脂肪醇改性马来酸酐 - 共聚物的影响柴油燃料冷流性能

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摘要

Precipitation of n-alkanes at low temperatures is the main factor that affects the cold flow properties of diesel fuel. In order to improve the clod flow properties of diesel fuel, maleic anhydride-methyl benzyl acrylate copolymer (MA-MB) were synthesized and modified with long-chain fatty amine and long-chain fatty alcohol (RNH2 and ROH, R = C-14, C-16, C-18) to obtain a series of aminated copolymers R(1)MA-MB (R-1 = N-14, N-16, N-18) and esterified copolymers R(2)MA-MB (R-2 = C-14, C-16, C-18). These copolymers were characterized by gel permeation chromatography (GPC), Fourier transform infrared (FTIR) spectroscopy, and proton nuclear magnetic resonance (H-1 NMR), and the oil affinity and oil solubility were studied by the static contact angle. The influences of them used as pour point depressants (PPDs) on the cold flow properties of diesel fuel were investigated. Results indicate that the esterified copolymers exhibit a better depression effect in depressing the solid point (SP) and cold filter plugging point (CFPP) than that of aminated copolymers. Among that, C(14)MA-MB exhibited the most considerable reduction on the SP and CFPP by 24 and 8 degrees C at 500 ppm addition, respectively. In addition, the depression mechanism was explored by differential scanning calorimetry, rheological analysis and polarizing optical microscopy. The analysis shows that C(14)MA-MB changed the crystal behaviors by modifying the crystal growth direction, restraining the crystal accumulation, and retarding the formation of large crystals, thus enhancing the cold flow properties of diesel fuel. Therefore, the synthesized copolymers are the highly effective PPDs of diesel fuels.
机译：低温下正烷烃的沉淀是影响柴油燃料冷流性能的主要因素。为了改善柴油的Clod流动性能，合成并用长链脂肪胺和长链脂肪醇（RNH2和ROH，R = C-14的长链脂肪胺 - 甲基苄基丙烯酸酐（MA-MB）进行丙烯酸酐 - 甲基苄基丙烯酸酐（MA-MB） ，得到一系列胺化共聚物R（1）MA-MB（R-1 = N-14，N-16，N-18）和酯化共聚物R（2）MA-MB的一系列胺化共聚物（R-2 = C-14，C-16，C-18）。通过凝胶渗透色谱（GPC），傅里叶变换红外（FTIR）光谱和质子核磁共振（H-1 NMR）的特征在于，研究了这些共聚物，并通过静态接触角研究了油亲和力和油溶解度。研究了它们用作倾点抑制剂（PPDS）对柴油燃料的冷流动性能的影响。结果表明，酯化的共聚物表现出更好的抑郁效应，从而抑制固体点（SP）和冷过滤器堵塞点（CFPP）而不是酰胺共聚物的抑制作用。其中，C（14）MA-MB分别在500ppm的添加中表现出SP和CFPP的最相当大的减少。此外，通过差示扫描量热法，流变分析和偏振光学显微镜探索凹陷机理。该分析表明，C（14）MA-MB通过改变晶体生长方向，限制晶体积聚，并延迟形成大晶体的形成，从而提高柴油燃料的冷流性能来改变晶体行为。因此，合成的共聚物是柴油燃料的高效PPD。

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  • 来源
    《Fuel》 |2020年第may15期|117392.1-117392.8|共8页
  • 作者

    Chen Fengfei; Liu Jinbao; Yang Taishun; Yin Suya; Su Baoting; Xie Maiying; Dai Bin; Han Sheng; Xue Yuan;

  • 作者单位

    Shanghai Inst Technol Sch Chem & Environm Engn Shanghai 201418 Peoples R China;

    Shanghai Urban Construct Vocat Coll Dept Sci & Technol Shanghai 201415 Peoples R China;

    Shanghai Inst Technol Sch Chem & Environm Engn Shanghai 201418 Peoples R China;

    Shanghai Inst Technol Sch Chem & Environm Engn Shanghai 201418 Peoples R China;

    Shanghai Inst Technol Sch Chem & Environm Engn Shanghai 201418 Peoples R China|Shanghai Univ Engn Sci Sch Chem & Chem Engn Shanghai 200336 Peoples R China;

    Shanghai Inst Technol Sch Chem & Environm Engn Shanghai 201418 Peoples R China;

    Shihezi Univ Sch Chem & Chem Engn Shihezi 832000 Xinjiang Peoples R China;

    Shanghai Inst Technol Sch Chem & Environm Engn Shanghai 201418 Peoples R China|Shihezi Univ Sch Chem & Chem Engn Shihezi 832000 Xinjiang Peoples R China|Shanghai Univ Engn Sci Sch Chem & Chem Engn Shanghai 200336 Peoples R China;

    Shanghai Inst Technol Sch Chem & Environm Engn Shanghai 201418 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

    Diesel fuel; Pour point depressant; Modified copolymer; Cold flow properties; Action mechanism;

    机译：柴油;倾点抑制剂;改性共聚物;冷流性能;动作机制;

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