Method for preparing color carbon powder by adopting suspension polymerization method

The invention relates to a method for preparing color carbon powder by adopting a suspension polymerization method, and solves the problems that carbon powder is instable in quality and the selection of raw materials is limited in a traditional suspension polymerization method. According to the technical scheme, the method comprises the following steps: melting a coloring agent and resin, mixing the melt coloring agent and resin so as to obtain a mixture I, extruding the mixture I and crushing to obtain color master batch; adding the color master batch, wax and an initiator into monomers to obtain a mixture II, heating and stirring to dissolve the mixture II to obtain an organic phase containing the coloring agent, resin, initiator, wax and monomers; adding the organic phase into an aqueous solution containing a surface active agent, carrying out shearing dispersing on the organic phase in the aqueous solution to obtain turbid liquid, polymerizing the turbid liquid in a heating manner to obtain a color carbon powder matrix, finally filtering the color carbon powder matrix, washing the filtered color carbon powder matrix, drying, and mixing the color carbon powder matrix with additives to obtain the color carbon powder. The method is simple in procedure, low in process difficulty, easy to control, wide in raw material selection range and relatively few in adverse impact factors, and the obtained color carbon powder is relatively narrow in granularity distribution, relatively few in small particles and stable and reliable in quality.