摘要
制备了氧化石墨烯改性水泥,并对其力学性能进行研究。以鳞片石墨、硝酸钠、浓硫酸等为原料,采用Hummers改性法制备氧化石墨烯,经过超声、剥离等方法,得到了最终的氧化石墨烯。然后在净浆搅拌锅内倒入均匀分散的氧化石墨烯胶体,并倒入水泥对其进行均匀搅拌,对获取的水泥浆体进行成型养护,并对氧化石墨烯改性水泥进行了力学性能测试,包括抗压强度与抗折强度实验。将水泥的抗压强度与抗折强度实验结果作为对比组,将氧化石墨烯改性水泥的抗压强度与抗折强度实验结果作为实验组。结果显示制备的氧化石墨烯改性水泥在氧化石墨烯掺量逐渐提升的情况下,实现了抗压强度与抗折强度的提升,在氧化石墨烯掺量为1.0%时达到最大抗压强度,掺量为0.06%时抗折强度达到最高。
The graphene oxide modified cement is prepared and its mechanical properties are studied.The flake graphite,sodium nitrate,concen-trated sulfuric acid are used as the raw materials to prepare the graphene oxide by the Hummers modification method,and the final graphene oxide is obtained through ultrasonic and peeling methods.Then the uniformly dispersed graphene oxide colloid is poured into the clean slurry mixing pot,and the cement is also poured into the pot and stirred evenly,and then the obtained cement slurry is shaped and maintained,and the mechanical properties of the graphene oxide modified cement are tested,including the compressive strength and the flexural strength.The experimental results of the com-pressive strength and the flexural strength of cement are taken as the control group,and the experimental results of the compressive strength and the flexural strength of graphene oxide modified cement are taken as the experimental group.The results show that the compressive strength and flexural strength of the cement are improved with the increase of the content of graphene oxide,the compressive strength will reach the maximum when the graphene oxide content is 1.0%,and the flexural strength will be the highest when the content is 0.06%.
作者
张慧
张超
ZHANG Hui;ZHANG Chao(Shaanxi Polytechnic Institute,Xianyang 712000,China)
出处
《化学与粘合》
CAS
2020年第5期369-372,共4页
Chemistry and Adhesion
关键词
氧化石墨烯改性水泥
制备
力学性能
分散胶体液
Graphene oxide modified cement
preparation
mechanical properties
dispersed colloidal solution
