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首页> 外文期刊>RSC Advances >Synthesis and characterization of biobased polyurethane/SiO2 nanocomposites from natural Sapium sebiferum oil
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Synthesis and characterization of biobased polyurethane/SiO2 nanocomposites from natural Sapium sebiferum oil

机译：自然皂石料中生物化聚氨酯/ SiO2纳米复合材料的合成与表征

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摘要

Novel Sapium sebiferum oil-based polyurethane (PU) nanocomposites with different contents of nano-SiO2 were successfully synthesized via an in situ polymerization method. Firstly, Sapium sebiferum polyol (SSP) was prepared in a continuous two-step process of epoxidation and hydroxylation, and nano-SiO2 particles were modified with 3-aminopropyltriethoxysilane (AMEO). Furthermore, SSP and isophorone diisocyanate (IPDI) reacted with a certain amount of the modified nano-SiO2 to enhance the physical properties of PU nanocomposites. The characterization of the structure and the properties of the surface modified nano-SiO2 and the PU/SiO2 nanocomposites were analyzed by Fourier transform infrared (FTIR), thermogravimetric analysis (TGA), solid-state Si-29 nuclear magnetic resonance (NMR), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). The results demonstrate that nano-SiO2 particles can be homogeneously dispersed in the PU matrix with a loading amount less than 5 wt%. Compared with the pure PU, the glass transition temperatures and initial decomposition temperatures of the PU/SiO2 nanocomposites were respectively enhanced by 20.5 degrees C and 43.5 degrees C with 3 wt% nano-SiO2 content. Moreover, the tensile strength of the PU/SiO2 nanocomposites was improved at 170%, and the water and toluene resistance properties of PU/SiO2 were also significantly enhanced.
机译：通过原位聚合方法成功地合成了具有不同纳米SiO 2的不同含量的氧化钛基油基聚氨酯（PU）纳米复合材料。首先，在环氧化和羟基化的连续两步法制下制备皂石脂多元醇（SSP），用3-氨基丙基三乙氧基硅烷（Ameo）改性纳米-SiO 2颗粒。此外，SSP和异佛尔酮二异氰酸酯（IPDI）与一定量的改性纳米SiO 2反应，以增强PU纳米复合材料的物理性质。通过傅里叶变换红外（FTIR），热调标分析（TGA），固态Si-29核磁共振（NMR）分析了表面改性纳米SiO2和PU / SiO2纳米复合材料的结构和PU / SiO2纳米复合材料的表征。扫描电子显微镜（SEM）和差示扫描量热法（DSC）。结果表明，纳米SiO 2颗粒可以在PU基质中均匀地分散，其负载量小于5wt％。与纯PU相比，PU / SiO2纳米复合材料的玻璃化转变温度和初始分解温度分别增强20.5℃和43.5℃，具有3wt％纳米SiO 2含量。此外，PU / SiO2纳米复合材料的拉伸强度在170％下提高，PU / SiO2的水和甲苯抗性性也显着提高。

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  • 来源
    《RSC Advances》 |2015年第34期|共10页
  • 作者

    Wu Guiying; He Xin; Xu Li; Zhang Houjin; Yan Yunjun;

  • 作者单位

    Huazhong Univ Sci &

    Technol Key Lab Mol Biophys Minist Educ Coll Life Sci &

    Technol Wuhan 430074 Peoples R China;

    Huazhong Univ Sci &

    Technol Key Lab Mol Biophys Minist Educ Coll Life Sci &

    Technol Wuhan 430074 Peoples R China;

    Huazhong Univ Sci &

    Technol Key Lab Mol Biophys Minist Educ Coll Life Sci &

    Technol Wuhan 430074 Peoples R China;

    Huazhong Univ Sci &

    Technol Key Lab Mol Biophys Minist Educ Coll Life Sci &

    Technol Wuhan 430074 Peoples R China;

    Huazhong Univ Sci &

    Technol Key Lab Mol Biophys Minist Educ Coll Life Sci &

    Technol Wuhan 430074 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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