Abstract: Activated carbon fabric is a new type of thermal insulation material, the activated carbon fabric was done in the horizontal tube furnace by carbonizing ordinary cotton fabric under the protection at 850 °C nitrogen system. The surface structure of the fabric was observed in the microscope ,using the infrared spectra analyzed the functional group of carbonized cotton fibers inside the fibers, tested and analyzed regenerative heating performance of the fabric , the contact heat transfer properties and coefficient of thermal conductivity .The results showed that, 1) carbonized fabric owned intact surface structure, but inside the fiber group was destroyed to low fabric strength; 2)activated carbon fabric regenerative heating rate was significantly higher than that of cotton fabric and be able to quickly reach the temperature balance and reduce energy consumption；3) Transient heat flow of the activated carbon fabric was lower than cotton , absorbed little heat in the process of contact with heat and reduced the energy loss; 4) activated carbon fabric heat transfer coefficient was lower than the cotton fabric and owned good insulation compared to cotton fabric.

Key words: carbonized carbon fabric, thermal accumulation, thermal conductivity, thermal insulating material