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Modification of Talc@TiO2 toward high-performance nitrile rubber application

机译:滑石粉@ TiO2的改性,以应用于高性能丁腈橡胶

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To improve the dispersion of talcum powder (Talc) for polymer applications, modified nano-titania powders (TiO _(2) ) using a silane coupling agent (KH550), a titanate coupling agent (NDZ201) and sodium polyacrylate (PAAS) were well adhered to the surface of Talc with a ball milling method, thereby preparing a series of mixed Talc@TiO _(2) particles to realize good dispersion in carboxylated acrylonitrile–butadiene rubber (XNBR). Note that Talc@TiO _(2) particles modified by PAAS and NDZ201 show better colloidal dispersion in anhydrous ethanol due to organification and repulsion of charge, with original Talc and NDZ201 modified Talc@TiO _(2) powders as a comparison. Modified Talc@TiO _(2) hybrid XNBR shows good performance characteristics, including damping capacity and impact resistance, depending mainly on the excellent mechanical property of Talc, good dispersion and the high adhesive force between modified Talc@TiO _(2) and XNBR.
机译:为了改善滑石粉(滑石粉)在聚合物中的分散性,使用硅烷偶联剂(KH550),钛酸酯偶联剂(NDZ201)和聚丙烯酸钠(PAAS)的改性纳米二氧化钛粉末(TiO _(2))很好通过球磨法将其粘附在滑石表面,从而制备一系列混合的Talc @ TiO _(2)颗粒,以实现在羧化丙烯腈-丁二烯橡胶(XNBR)中的良好分散。请注意,由于原始的Talc和NDZ201改性的Talc @ TiO _(2)粉末,用PAAS和NDZ201改性的Talc @ TiO _(2)颗粒在无水乙醇中显示出更好的胶体分散性,这是由于电荷的组织和排斥。改性滑石@TiO _(2)杂化XNBR表现出良好的性能特性,包括阻尼能力和抗冲击性,这主要取决于滑石的优异机械性能,良好的分散性以及改性滑石@TiO _(2)与XNBR之间的高粘合力。

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