Preparation and Rheological Properties of Amide-based Multiwalled Carbon Nanotube Mirabilite Phase Change Materials

The multi-walled carbon nanotubes (MWCNTs) are modified by redox methods, and the surface groups of MWCNTs analyzed infrared spectroscopy. And were added to mirabilite-based phase change materials (PCMs) at 40°C prepare composite material. results show that when volume fraction is 0.05% 0.25%, temperature rises from 30°C 50°C, viscosity drop material 35.86% 37.50%, respectively. That is, larger nanoparticles, higher viscosity, thus greater ability perceive fluctuations. In addition, amide multiwalled nanotube mirabilite PCMs was placed for 30 days, dispersion stability good, no delamination occurred.