پديدآورندگان :
karimi eskaboni Fateme Polymer Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran , maghami Farnoosh Polymer Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran , Abdeali Golnoosh Polymer Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran , Bahramian Ahmadreza Polymer Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
كليدواژه :
Shape Stability , Phase Change Materials , Leakage , Carbon Fiber
چكيده فارسي :
In this study, carbon fiber (CF) was used as a shape stabilizer and polyethylene glycol (PEG) as a phase change material in the phase change system. Oxidized carbon fiber (CFO) was prepared using 3:2:1 (v/v/v) mixture of H2SO4/HNO3/HCl acid solution then CFO was modified by toluene diisocyanate (TDI) and ethylen glycol (EG). Existence of functional groups were confirmed by Fourier-transform infrared spectroscopy (FTIR). Modified CF (EICFO) was utilized for integration of PEG to prepare phase change system. In this study, effect of of modified carbon fiber amount was investigated on leakage percentage. Findings have shown that, phase change system containing 4 wt.% of modified carbon fibers had the lowest leakage rate and leakage rate in the first heating / cooling cycle was 0.13%.
