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Improved Tribological Properties of Epoxy Cement Reinforced with Impact-Resistant Core-Shell Structured Polymer Nanoparticles

Authors :
Ling Qiu
Yuan Wang
Xiaolan Kong
Yanan Li
Shiyu Cao
Wenbin Hu
Gangqiang Zhang
Chenchen Wang
Source :
Lubricants, Vol 12, Iss 8, p 267 (2024)
Publication Year :
2024
Publisher :
MDPI AG, 2024.

Abstract

Traditional cement epoxy pavements suffer from inherent limitations such as terrible tribological properties, poor wear resistance, and weak impact resistance, presenting significant challenges to ensure the safety and continuous operation of urban roads. As a solution, high-performance cement epoxy composite grouting materials have emerged as the preferred option for engineering construction and road maintenance. In this study, CSP/epoxy cement (CSEC) composite materials were prepared by emulsion polymerization. The thermal properties of the materials were characterized, revealing that CSP enhances the thermal properties of epoxy cement (EC) to a certain extent. Furthermore, the frictional properties of CSEC composite materials and pure epoxy cement under different normal loads were investigated. The results indicated that the CSEC composite material exhibited a slight increase in friction coefficient and a notable decrease in wear rate compared to pure epoxy cement (EC). Specifically, the wear rate of CSEC decreased by 14.4% at a load of 20 N, highlighting the enhanced frictional performance facilitated by CSP. Mechanistic analysis attributed the improvement to the unique core-shell structure of CSP, which imparted higher impact resistance and eliminated alleviate residual stresses at the friction interface. This structural advantage further enhanced the wear resistance of materials, making it a promising choice for improving the durability and safety of urban road surfaces.

Details

Language :
English
ISSN :
20754442
Volume :
12
Issue :
8
Database :
Directory of Open Access Journals
Journal :
Lubricants
Publication Type :
Academic Journal
Accession number :
edsdoj.bcdfe6c74d314ce797a4e0fab133643b
Document Type :
article
Full Text :
https://doi.org/10.3390/lubricants12080267