Employing the carbon nanotubes synthesized by diffusion flame method（F-CNT） and those functionalized with n-hexadecylamine（H-CNT）

F-CNT /vinyl ester resin（VE） and H-CNT/VE composites had been fabricated by in-situ polymerization

respectively.The structure and properties of these composites were studied by scanning electron microscopy（SEM） and dynamic mechanical analyzer（DMA）.The experiment results indicate that F-CNT and H-CNT show a better dispersion state comparing with the carbon nanotube synthesized by CVD（C-CNT）.In addition

both glass transition temperatures（Tg） and storage modulus（E′） of the composites are closely related to the species and weight percentage of carbon nanotubes.