纤维沿轴向导热系数λFL与沿径向导热系数λFT之间有差异.用非稳态导热测试方法测得了5种蛋白纤维及7种其它纺织纤维的λFL和λFT,被测纤维的λFL和λFT之比约达2～20倍.“,”Fiber structure anisotropism is reflected by the difference of fiber thermal conductivity between in the longitudinal direction and in the transverse direction.In this paper,fiber thermal conductive parametre λFL in the longitudinal direction and λFT in the transverse direction,which come from five kinds of protein fibers and another seven kinds of textile fibers were obtained with nonsteadiness thermal conduction mearsuring method.The ratio of λFL to λFT is about 2 to 20.