Fabrication and mechanical properties of TiO2 polymer‐matrix nanocomposite and its 3D woven composite,Polymer Composites

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Fabrication and mechanical properties of TiO2 polymer‐matrix nanocomposite and its 3D woven composite
Polymer Composites ( IF 4.8 ) Pub Date : 2021-01-13 , DOI: 10.1002/pc.25931
Yaohua Gong ₁ , Xun'an Zhang ₁ , Tao Huang ₁ , Xinghao Li ₁ , Yongyong Suo ₁ , Shuyi Zhao ₂

Affiliation

The present work aims to study the effect of nano‐TiO₂ modified epoxy on the tension, compression, and fracture toughness properties of nano‐doped polymer (NP) and nano‐doped 3D woven (NW) composites. Nanoparticles are dispersed into epoxy using high‐speed shear mixing and ultrasonication processes. Vacuum‐assisted resin infusion molding process is utilized to prepare the woven composites. The results indicate that nanoparticle addition can improve the tensile modulus and compressive strength of NP composites. The best improvement for fracture toughness of NP composites and compressive strength of NW composites appears at 8 wt% addition. No obvious changes are observed for tensile modulus and strength of NW composites in both warp and weft directions. However, the decreasing trend is observed for the tensile strength of NP composites. Scanning electron microscope images are observed to evaluate the failure mechanisms of the NP and NW composites.

中文翻译：

TiO2聚合物基纳米复合材料及其3D编织复合材料的制备和力学性能

本工作旨在研究纳米TiO _2的作用改性环氧树脂对纳米掺杂聚合物（NP）和纳米掺杂3D机织（NW）复合材料的拉伸，压缩和断裂韧性性能的影响。使用高速剪切混合和超声处理工艺将纳米颗粒分散在环氧树脂中。真空辅助树脂灌注成型工艺用于制备机织复合材料。结果表明，纳米颗粒的添加可以提高NP复合材料的拉伸模量和抗压强度。NP复合材料的断裂韧性和NW复合材料的抗压强度的最佳改善出现在添加8 wt％的情况下。在经向和纬向均未观察到NW复合材料的拉伸模量和强度发生明显变化。但是，观察到NP复合材料的拉伸强度下降的趋势。

更新日期：2021-01-13

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