The kinetics of nonisothermal and isothermal crystallization of polypropylene melt in polypropylene/low melting point metal( PP/LMPM) composites was investigated by DSC. LMPM is shown to be the nucleating agent of PP crystallization
and DBTL can increase the speed of PP crystallization. The higher the rotation speed in mixing process
the more the crystal nuclei. The crystallite dimension of PP decreases with the increase of volume fraction of LMPM
the increase of rotation speed in mixing process and the increase of volume fraction of DBTL. But homogeneous nuclei in PP/LMPM composites always exist and decrease to a limiting value with the increase of LMPM and DBTL.