THE BREAKDOWN OF SOLID COATING DURING TEN SILE DRAWING OF POLYMER SUPPORT

Using the methods of light and scanning electron microscopy, the break down of a thin platinum coating was studied during tensile drawing of PET and rubber supports. Under similar conditions, the sizes of the fr actured fragments are shown to depend on the stress stored by polymer matrix during deformation and on the thickness of the deposited metall ic layer. A theoretical consideration within the framework of the mode l of rigid coating deposited onto a soft support allows an adequate de scription of all peculiar features of the behavior of the above system s. This model provides an adequate description for the breakdown of a rigid coating during tensile drawing of polymer support.