Abstract:
Carbon foam is prepared by using phenol-ehtylenediamine benzoxazine as an organic precursor and azodicarbonamide (AZD) as a blowing agent. The effects of AZD concentration and polymerization rate on the porous structure and density of organic foams have been investigated. From DSC results, it has been found that the exothermic peaks of organic foam have shifted to lower temperature when the AZD concentration is increased. It is believed that AZD also acts as catalyst for benzoxazine ring-opening polymeriazation.
