将滑石@二氧化钛改性以用于高性能丁腈橡胶应用。

Modification of Talc@TiO toward high-performance nitrile rubber application.

作者信息

He Chao, Zhang Lin, Chen Duoli, Fan Xiaoqiang, Cai Zhenbing, Zhu Minhao

机构信息

Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University Chengdu 610031 China

Tribology Research Institute, State Key Laboratory of Traction Power, Southwest Jiaotong University Chengdu 610031 China

出版信息

RSC Adv. 2018 May 11;8(31):17300-17311. doi: 10.1039/c8ra01091a. eCollection 2018 May 9.

DOI:10.1039/c8ra01091a

PMID:35539239

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9080459/

Abstract

To improve the dispersion of talcum powder (Talc) for polymer applications, modified nano-titania powders (TiO) 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 particles to realize good dispersion in carboxylated acrylonitrile-butadiene rubber (XNBR). Note that Talc@TiO 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 powders as a comparison. Modified Talc@TiO 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 and XNBR.

摘要

为改善滑石粉（Talc）在聚合物应用中的分散性，采用球磨法将使用硅烷偶联剂（KH550）、钛酸酯偶联剂（NDZ201）和聚丙烯酸钠（PAAS）改性的纳米二氧化钛粉末（TiO）良好地附着在滑石粉表面，从而制备出一系列混合的滑石粉@TiO颗粒，以实现其在羧基丁腈橡胶（XNBR）中的良好分散。注意，由于有机化和电荷排斥作用，经PAAS和NDZ201改性的滑石粉@TiO颗粒在无水乙醇中表现出更好的胶体分散性，并以原始滑石粉和经NDZ201改性的滑石粉@TiO粉末作为对照。改性的滑石粉@TiO杂化XNBR表现出良好的性能特性，包括阻尼能力和抗冲击性，这主要取决于滑石粉优异的机械性能、良好的分散性以及改性滑石粉@TiO与XNBR之间的高附着力。