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首页> 外文期刊>Polymers >Grafting Halloysite Nanotubes with Amino or Carboxyl Groups onto Carbon Fiber Surface for Excellent Interfacial Properties of Silicone Resin Composites
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Grafting Halloysite Nanotubes with Amino or Carboxyl Groups onto Carbon Fiber Surface for Excellent Interfacial Properties of Silicone Resin Composites

机译：将Halloysite Nanotubes与氨基或羧基接枝到碳纤维表面上，以优异的硅树脂复合材料的界面性质

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The quality of interphase in carbon fibers (CFs) composites makes a key contribution to overall performance of composites. Here, we achieved for the first time the chemical grafting of halloysite nanotubes (HNTs) with amino or carboxyl groups onto the CFs surface aiming to increase composites interfacial strength. HNTs were grafted using 3-aminopropyltriethoxysilane (APS) followed by succinic anhydride treatment, and HNTs with amino groups (HNT–NH 2 ) or carboxyl groups (HNT–COOH) were separately introduced into the interphase of composites. Functional groups of HNTs and fiber surface structures were characterized, which confirmed the modification success. The wettability between the modified CFs and resin have been enhanced obviously based on the improved fiber polarity and enhanced surface roughness by the introduced two functionalized HNTs with the uniform distributions onto fiber surface. Moreover, interfacial properties and anti-hydrothermal aging behaviors of modified methylphenylsilicone resin (MPSR) composites were improved significantly, especially for HNT–COOH grafting. In addition, the interfacial reinforcement mechanisms for untreated and modified CF composites are discussed and compared.
机译：碳纤维（CFS）复合材料中的相互间的质量对复合材料的整体性能进行了关键贡献。在此，我们首次实现了Halloysite Nanotubes（HNT）的化学接枝与氨基或羧基上的CFS表面上，旨在增加复合材料界面强度。使用3-氨基丙基三乙氧基硅烷（AP）接枝HNT，然后用琥珀酸酐处理，分别将具有氨基（HNT-NH 2）或羧基（HNT-COOH）的HNT分别引入复合材料的相互作用。特征在于HNT和纤维表面结构的官能团，其证实了修改成功。通过将引入的两种官能化HNT与均匀分布到纤维表面上的引入的两个官能化HNT，改变的CFS和树脂之间的润湿性明显地提高了改进的纤维极性和增强的表面粗糙度。此外，改进的甲基苯基硅氧烷树脂（MPSR）复合材料的界面性质和抗水热老化行为显着改善，特别是对于HNT-COOH接枝。另外，讨论并比较了未处理和改性的CF复合材料的界面增强机制。

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