in this paper, influence of the morphology of polyethyleneterephthalate (pet)films under biaxial stretching on the gas permeability has been investigated by using polaris cope and electron microscope.
本文用电子显微镜和偏光显微镜研究双轴拉伸聚对苯二甲酸乙二酯(pet)形态结构对透气性能的的影响。
in order to obtain the mechanical properties of rubber's hyperelastic parameters, the general means is based on the traditional uniaxial tensile, biaxial stretching and other methods.
为了获取超弹性力学特性的参数,通常采用对材料进行单、双向拉伸、压缩等实验获取数据。
the calendering biaxial stretching equipment for film making, such as light-box film, shed film, earth-work film and kinds of special purpose film as well as its processing technology were introduced.
介绍了生产灯箱膜、大棚膜、土工膜及其它大型膜类的压延双向拉伸设备及生产工艺。