多壁碳纳米管/二氧化钛杂化纳米填料在高性能环氧树脂复合材料中的应用。

MWCNT/TiO hybrid nano filler toward high-performance epoxy composite.

机构信息

Department of Metallurgical & Materials Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India.

出版信息

Ultrason Sonochem. 2018 Mar;41:37-46. doi: 10.1016/j.ultsonch.2017.09.005. Epub 2017 Sep 7.

DOI:10.1016/j.ultsonch.2017.09.005

Abstract

In this work, multi-walled carbon nanotubes (MWCNTs) are decorated by TiO nanoparticles and formed a new hybrid structure of filler (MWCNT/TiO hybrid filler). The MWCNT/TiO hybrid filler is reinforced in epoxy matrix and studied the mechanical and anti-corrosion properties of epoxy. The morphology of newly formed MWCNT/TiO hybrid nano filler has been studied using transmission electron microscopy (TEM). Field Emission Scanning Electron Microscope (FESEM) images of tensile fracture surface confirmed the superior dispersion of MWCNT/TiO in the epoxy matrix. The resultant MWCNT/TiO hybrid-epoxy nanocomposite exhibits superior anti-corrosion and mechanical performance than the nanocomposite produced by loading of only MWCNTs or TiO nanoparticles as well as neat epoxy. For example, tensile strength and storage modulus of epoxy increased by 61% and 43% respectively on loading of MWCNT/TiO hybrid nano filler. Furthermore, the coating of MWCNT/TiO hybrid-epoxy nanocomposite on mild steel reduces the corrosion rate upto 0.87×10MPY from 16.81MPY.

摘要

在这项工作中，多壁碳纳米管 (MWCNT) 被 TiO 纳米粒子修饰，形成了一种新型的填充剂（MWCNT/TiO 杂化填充剂）。MWCNT/TiO 杂化填充剂增强了环氧树脂，并研究了环氧树脂的力学和耐腐蚀性能。采用透射电子显微镜 (TEM) 研究了新形成的 MWCNT/TiO 杂化纳米填充剂的形态。拉伸断裂表面的场发射扫描电子显微镜 (FESEM) 图像证实了 MWCNT/TiO 在环氧树脂基体中的优异分散性。与仅负载 MWCNTs 或 TiO 纳米粒子以及纯环氧树脂制成的纳米复合材料相比，所得的 MWCNT/TiO 杂化-环氧树脂纳米复合材料表现出优异的耐腐蚀和力学性能。例如，在负载 MWCNT/TiO 杂化纳米填充剂后，环氧树脂的拉伸强度和储能模量分别提高了 61%和 43%。此外，MWCNT/TiO 杂化-环氧树脂纳米复合材料在低碳钢上的涂层使腐蚀速率从 16.81MPY 降低到 0.87×10MPY。