摘要
通过对石墨进行氧化和超声分散制备出了氧化石墨烯(GO)片层分散液,再与丙烯酸(AA)进行共聚反应制备了丙烯酸与GO的共聚物Poly(AA-GO),用于水泥基复合材料的增强增韧.结果表明,通过Poly(AA-GO)共聚物引入的GO能够调控水泥水化产物形成规整的花状体或者多面体,在聚集后可形成规整有序的微观结构,从而具有显著减少孔隙和裂缝、提高强度和韧性的效果.该研究结果对于提高水泥基复合材料的强度和韧性,以及增强抵抗裂缝和提高耐久性具有积极的意义.
Graphene oxide （GO）sheet dispersion solution was prepared by oxidization and ul-trasonic treatment,and then GO reacted with acrylic acid （AA）to prepared the copolymer of poly（AA-GO）for reinforcing and toughening cement composites.The results indicated that GO,from poly （AA-GO）copolymer,can control to generate flower-like and polyhedron products and form ordered microstructure,which can significantly reduce the holes and cracks and increase strength and toughness.The research result has the positive significance to increasing the strength and toughness as well as improving of crack resistance and prolon-ging life of concrete.
出处
《陕西科技大学学报（自然科学版）》
2016年第3期60-64,81,共6页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(21276152)
关键词
氧化石墨烯
水泥基复合材料
增强增韧
自修复作用
graphene oxide
cement composites
reinforcing and toughening
self-repairing effects
