ON THE EFFECT OF INTERMEDIATE PRESSING OF PREFORMS ON THE FORMATION OF A DEFECT-FREE STRUCTURE OF FINISHED PRODUCTS FROM CARBON FIBER-FILLED POLYTETRAFLUOROETHYLENE
This article describes a method for producing composite materials based on polytetrafluoroethylene with high performance properties. One of the obstacles to achieve this result had been the accumulation of moisture in the semi-finished product, which subsequently led to the appearance of defects in products made of fluorine composites. It is proposed to produce semi-finished preforms under reduced specific pressure, in which the moisture content is easier, cheaper and more efficient to control than with the current technological regulations. It is shown that the use of these semi-finished preforms allows getting almost defect-free products with high performance characteristics.