High performance polyethylene nanocomposite fibers
材料科学
纳米复合材料
聚乙烯
复合材料
高分子科学
作者
M. D’Amato,Andrea Dorigato,Luca Fambri,Alessandro Pegoretti
出处
期刊:Express Polymer Letters [Department of Polymer Engineering Budapest University of Technology & Economics), Scientific Society of Mechanical Engineerin] 日期:2012-01-01卷期号:6 (12): 954-964被引量:38
A high density polyethylene (HDPE) matrix was melt compounded with 2 vol% of dimethyldichlorosilane treated fumed silica nanoparticles. Nanocomposite fibers were prepared by melt spinning through a co-rotating twin screw extruder and drawing at 125°C in air. Thermo-mechanical and morphological properties of the resulting fibers were then investigated. The introduction of nanosilica improved the drawability of the fibers, allowing the achievement of higher draw ratios with respect to the neat matrix. The elastic modulus and creep stability of the fibers were remarkably improved upon nanofiller addition, with a retention of the pristine tensile properties at break. Transmission electronic microscope (TEM) images evidenced that the original morphology of the silica aggregates was disrupted by the applied drawing.