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 are: simplification of the plant in order to increase reliability; creating opportunities to test high-elastic and highly-durable designs.; The problem is solved in that in a device consisting of two vertical uprights, on which found three horizontal platform, two of them are not mobile, and the average is made with the possibility of vertical displacement, having a hole whose center coincides with the longitudinal axis of the sample and the jaws, wherein node is to remove 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 mounted a roller with assembly system consisting of t PEX roller pairs arranged at an angle of 120 ° relative to each other and covering the lower jig whose section is a regular hexagon, the upper clamp is formed as a console, which is rigidly fixed to the load cell and two brushes or sensors mounted on the vertical post, the guide assembly, it is located under console, and includes lower clamp, the lower clamp is movable along the axis of the sample through an opening in the central horizontal platform, and in the middle part of the lower jig is formed meta -crystalline platform is vertically movable for interaction with the electromagnet, and at a lower end installed typesetting installation area for shipping.; 1N. PF-ly. 1 Fig.