废玉米秸秆增强摩擦复合材料的物理力学和摩擦学特性评估

The Evaluation of Physio-Mechanical and Tribological Characterization of Friction Composites Reinforced by Waste Corn Stalk.

作者信息

Ma Yunhai, Wu Siyang, Zhuang Jian, Tong Jin, Xiao Yang, Qi Hongyan

机构信息

State key laboratory of automotive simulation and control, Jilin University, Changchun 130022, China.

Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China.

出版信息

Materials (Basel). 2018 May 27;11(6):901. doi: 10.3390/ma11060901.

DOI:10.3390/ma11060901

PMID:29861490

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6025389/

Abstract

This paper addressed the potential use of fibers from waste corn stalk as reinforcing materials in friction composites. The friction composites with different contents of corn stalk fibers were prepared, and their tribological and physio-mechanical behaviors were characterized. It was found that the incorporation of corn stalk fibers had a positive effect on the friction coefficients and wear rates of friction composites. Based on comparisons of the overall performance, FC-6 (containing 6 wt % corn stalk fibers) was selected as the best performing specimen. The fade ratio of specimen FC-6 was 7.8% and its recovery ratio was 106.5%, indicating excellent fade resistance and recovery behaviors. The wear rate of specimen FC-6 was the lowest (0.427 × 10 mm³ (N·mm) at 350 °C) among all tested composites. Furthermore, worn surface morphology was characterized by scanning electron microscopy and confocal laser scanning microscopy. The results revealed that the satisfactory wear resistance performances were associated with the secondary plateaus formed on the worn surfaces. This research was contributive to the environmentally-friendly application of waste corn stalk.

摘要

本文探讨了将废弃玉米秸秆纤维用作摩擦复合材料增强材料的潜在用途。制备了具有不同含量玉米秸秆纤维的摩擦复合材料，并对其摩擦学和物理力学性能进行了表征。研究发现，加入玉米秸秆纤维对摩擦复合材料的摩擦系数和磨损率有积极影响。基于综合性能比较，FC-6（含6 wt%玉米秸秆纤维）被选为性能最佳的试样。试样FC-6的热衰退率为7.8%，恢复率为106.5%，表明其具有优异的抗热衰退和恢复性能。在所有测试复合材料中，试样FC-6的磨损率最低（350℃时为0.427×10⁻³mm³/(N·mm)）。此外，通过扫描电子显微镜和共聚焦激光扫描显微镜对磨损表面形貌进行了表征。结果表明，令人满意的耐磨性能与磨损表面形成的二次平台有关。本研究有助于废弃玉米秸秆的环保应用。