用于公路的丙烯酸酯类聚氨酯/碳纳米管材料的制备与性能分析
Preparation and Properties Analysis of Acrylic Polyurethane/Carbon Nanotube Materials for Highway Applications
吕东滨 1杨洋 2李斌3
作者信息
- 1. 广西钟贺高速公路有限公司,广西 贺州 542800
- 2. 广西交通职业技术学院,广西 南宁 530214
- 3. 兰州交通大学,甘肃 兰州 730070
- 折叠
摘要
为避免公路图标和标识线受到恶劣环境的侵蚀,延长公路图标和标识线使用寿命,研究用于公路的丙烯酸酯类聚氨酯/碳纳米管材料的制备与性能分析.采用异佛尔酮-二异氰酸酯、偶氮二异丁腈等材料制备实验用丙烯酸酯类聚氨酯,分别在其中添加质量分数为0.2%、0.4%以及0.6%酸化处理后的碳纳米管,制成3种不同碳纳米管掺量的试样,通过力学性能测试以及耐磨性测试分析每种试样的应用效果.结果表明:当碳纳米管质量分数为0.2%时,材料的力学性能及耐磨性较弱,可见添加较少的碳纳米管无法提高材料性能;当碳纳米管掺量达到0.6%时,材料基础性能明显低于碳纳米管质量分数为0.4%时的试样.在不同方法测试下,添加质量分数0.4%碳纳米管的试样可以保持优异的热稳定性,当处于高温状态时,材料的拉伸强度和撕裂强度均保持较高水平,且磨损率相对较低.因此,添加质量分数0.4%碳纳米管的丙烯酸酯类聚氨酯更适用于公路建设.
Abstract
To avoid the erosion of highway icons and signage lines by harsh environments and extend their service life,the preparation and performance analysis of acrylic polyurethane/carbon nanotube materials for highways were studied.Experimental acrylic polyurethane was prepared using materials such as isophorone diisocyanate and azobisisobutyronitrile.Carbon nanotubes with mass fractions of 0.2%,0.4%and 0.6%after acidification treatment were added to the polyurethane,and three different carbon nanotube dosages were prepared as samples.The application effects of each sample were analyzed through a mechanical property test and a wear resistance test.The results show that when the mass fraction of carbon nanotubes is 0.2%,the mechanical properties and wear resistance of the materials are weak,indicating that adding fewer carbon nanotubes cannot improve material quality.When the carbon nanotube mass fraction reaches 0.6%,its basic performance is significantly lower than that of the sample with a carbon nanotube mass fraction of 0.4%.Under different testing methods,the sample with 0.4%mass fraction carbon nanotubes added can maintain excellent thermal stability.The tensile strength and tear strength of the materials are at a high level in a high temperature state,and the wear rate is relatively low.Therefore,acrylic polyurethane with 0.4%mass fraction of carbon nanotubes added is more suitable for highway construction.
关键词
丙烯酸酯类/碳纳米管/力学性能/耐磨性Key words
Acrylates/Carbon nanotubes/Mechanical properties/wear resistance引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据