| On the foundation of Processing Arts and Formulation of Biaxially Stetched PVF Films , this paper gives an study on the relation between the processing arts and the properties of Polyvinyl Fluoritefilm molded by flowcasting-biaxilly-stretching method . This paper gives an study effects of different stretching ratio on PVF films' main properties through some mechanical tests ; And gives an study through XRD spectrum of different PVF samples of stretched films. The influence of some factors such like stretching ratio and processing temperature on mechanical strength were discussed in detail. This paper also gives an study on effects of different stretching ratio on PVF films' crystallization.Based on the processing parameters throught above tests, This paper can support solution for scale-up production. Besides, the influence of oxygen transmission rate on test of oxygen transmission rate through PVF films of different stretching ratio is also studied. |
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