非晶聚合物塑性变形机理主要包括银纹化和剪切屈服[1 ,2 ] .银纹化是链段局部排列疏松区域或缺陷在膨胀应力作用下成为银纹核 ,引发银纹 ,银纹 本体界面应变软化 ,银纹微纤拉伸的应变硬化过程 ,使得聚合物银纹微纤沿拉伸方向取向 ,伴随这一过程聚合物的体积增大[3] .剪切屈服是 The plastic deformation mechanism of amorphous polymer mainly includes silver grain and shear yield [1, 2]. Silver grain is the local arrangement of loose segments or defects in the expansion stress to become silver grain, inducing silver grain, silver grain The strain-softening of the bulk interface and the strain-hardening process of the microfibre stretch of the silver microfibril make the orientation of the polymer silver microfibril along the stretching direction with the increase of the volume of the polymer [3]. Shear yielding is