Device for determining the dynamic characteristics of polymer filaments by the free longitudinal vibrations

摘要

The invention relates to the field of dynamic testing of highly oriented polymers and can be used to determine the dynamic characteristics of polymer filaments of different flexibility of the chains, such as - the CBM Twaron, ARMOS, lovsan. Advantageously, to determine the storage modulus, dynamic loss modulus, mechanical loss tangent, and coefficient of stiffness. The technical result of the claimed solution is to increase the reliability of determination of dynamic characteristics of polymer filaments by reducing the influence of the error introduced by the deflection of the beam in the measurement of deformation of the sample and checking the output parameters. The problem is solved in that the device for determining dynamic characteristics of polymer filaments by the free longitudinal vibrations consisting of two vertical uprights, on which found three horizontal two of these platforms are not moveable, and the average for vertical movement, having a hole whose center coincides with the longitudinal axis of the sample and clamps, which also can move vertically located node to derive the sample with the load of the equilibrium position, consisting of an electromagnet with a core diameter smaller than the diameter of the opening, and on which is secured another node roller system consisting of three pairs of rollers arranged at an angle of 120 ° relative to each other and covering the lower jig whose section is a regular hexagon, in its three lateral faces, and its upper clamp is formed as a console, which is rigidly fixed to the load cell, which is opposite to the additional movable platform, with the possibility of touching the specimen mounting space installed Celsus -sensors on the removable shoulder which is formed a spherical influx.; 1 bp f ly-2 Fig.