碳纳米管对磷酸镁水泥的性能影响研究

Study on the effect of carbon nanotube on the properties of magnesium phosphate cement

研究了不同掺量的碳纳米管对磷酸镁水泥(MPC)力学性能和导电性能的影响,并结合压汞法,XRD和FTIP分析其组分与微观结构变化。结果表明,随着碳纳米管掺量的增加,磷酸镁水泥的抗压强度先增加后降低,掺量为0.03%时达到最佳。随着碳纳米管掺量增加,MPC电阻率逐渐降低,而孔隙率增加。一定掺量的纳米碳管可以促进磷酸镁水泥的水化,但没有新的水化产物生成。

In this paper,the effects of different carbon nanotube content on the mechanical and electrical properties of magnesium phosphate cement were studied,and the composition and microstructure of MPC were analyzed by mercury intrusion method,XRD and FTIP.The results show that with the increase of the amount of carbon nanotubes,the compressive strength of magnesium phosphate cement increases first and then decreases,and the optimum content is 0.03%.The porosity of MPC increases and conductivity decreases with the increase of carbon nanotube content.The addition of a certain amount of carbon nanotubes can promote the hydration of magnesium phosphate cement,but no new hydration products are produced.