Different polyurethane(PU)/carbon nanotubes(CNTs)composite materials are prepared in situ by blending and coupling method,whose antistatic and mechanical properties are observed as well. The results show that coupling type PU/CNTs composite material shows better CNTs distribution and mechanical properties. With the content of CNTs increasing,the breaking elongation of the composite material rises,the impact and tensile strength go down followed by going up. The highest tensile and impact strength are observed respectively with 0.4%and 0.6%CNTs within. The antistatic property is improved and heat-insulating property is maintained following with the increasing of the CNTs contents,which proves the composite material is ideal for interior design.%分别采用物理共混法和化学偶联法原位制备了聚氨酯（PU）/碳纳米管（CNTs）复合材料，并研究了其力学性能和抗静电性能。结果表明：采用化学偶联法制备的PU/CNTs复合材料中的CNTs分布更均匀，且复合材料的力学性能更优异；随CNTs含量增加，PU/CNTs复合材料的断裂伸长率逐渐增大，而拉伸强度和冲击强度先增加后降低；当w（CNTs）为0.4%时，复合材料的拉伸强度最高，w（CNTs）为0.6%时，其冲击强度最高；随CNTs含量增加， PU/CNTs复合材料的抗静电性能得到改善，保温性能无明显降低，是较为理想的室内设计材料。
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