WANG Yong-gang, MIN Zhen-hua, CAO Min, XU De-ping. Effect of heating conditions on pore structure and performance of carbon foams. New Carbon Mater., 2009, 24(04): 321-326. doi: 10.1016/S1872-5805(08)60055-4
Citation:
WANG Yong-gang, MIN Zhen-hua, CAO Min, XU De-ping. Effect of heating conditions on pore structure and performance of carbon foams. New Carbon Mater., 2009, 24(04): 321-326. doi: 10.1016/S1872-5805(08)60055-4
WANG Yong-gang, MIN Zhen-hua, CAO Min, XU De-ping. Effect of heating conditions on pore structure and performance of carbon foams. New Carbon Mater., 2009, 24(04): 321-326. doi: 10.1016/S1872-5805(08)60055-4
Citation:
WANG Yong-gang, MIN Zhen-hua, CAO Min, XU De-ping. Effect of heating conditions on pore structure and performance of carbon foams. New Carbon Mater., 2009, 24(04): 321-326. doi: 10.1016/S1872-5805(08)60055-4
Carbon foams were prepared from AR pitch in a high pressure/high temperature reactor under different heating conditions. Their pore structure, bulk density, porosity, compressive strength, thermal conductivity, and crystallite size parameters were measured. Foams produced using a long time at a constant foaming temperature exhibit bigger pore size (412 nm), higher porosity (83.82%), lower bulk density (0.34 g/cm3), higher compressive strength (4.92 MPa), and more interconnected pores than that produced in a short time at the same constant foaming temperature, which exhibit high thermal conductivity (71.34 W/(m·K)) and low interlayer d-spacing (d002) (0.335 56 nm) after graphitization at 2 800°C. The specific thermal conductivity of graphite foams can reach 210 (W·(m·K)-1) /( g·cm-3), which is about five times greater than copper and four times greater than aluminum.