FIELD: testing.
SUBSTANCE: invention relates to material science of polymer systems and can be used to create, test and study interphase interactions at the interface of monofilament-polymer binder. Micromechanical complex consists of a bed, inside of which there is a goniometric table with micrometric screws, a working chamber installed on it, which is a cylinder from optically transparent heat-resistant material with a heat-insulating cover with a hole for introduction of monofilament and a base from fluoroplastic. Circular heating elements and thermocouple are arranged in working chamber. On the fluoroplastic base there is a heating table with a heating element and a T-shaped heat-conducting substrate with a recess for the binder/test liquid in the "head" and a thread on the "leg" for fixation in the heating table. On the bed there is a column with a stepped motor-controlled screw pair and a movable crossbar. On the traverse there is a force sensor, to which a needle-holder for monofilaments is attached; wherein retention of monofilaments occurs due to evacuation of the needle-holder. Evacuated holder comprises a gas-permeable membrane between the needle and the vacuum line. Monofilament is placed in a small-diameter hollow needle with a gas-permeable membrane at one end and retained by vacuum. Drop of thermosetting thermoplastic binder is placed in the recess on the T-shaped substrate. Free end of the monofilament above the top of the binder drop is positioned by means of a goniometric table and by means of a precision step motor. Monofilament is immersed in the binder drop to the specified depth by the precision movement of the needle with the monofilament down to the temperature-controlled table with the T-shaped holder with the binder by means of a step motor. Adhesive system is heated to curing temperature of thermosetting transition of thermoplastic binder and held until fixation of system components to binder gel point. Complete hardening of the system is carried out in a thermostatically controlled cabinet. Test sample is tested upon completion of the curing reaction or after transition of the matrix into a glassy/highly elastic state. Strength and deformation are measured when extracting the monofilament from the cured binder by moving the monofilament holder by means of a helical micromechanical transmission.
EFFECT: broader capabilities in production and testing of monofilament-matrix adhesive systems with possibility of investigating properties of initial components and interphase interactions occurring during formation of adhesive systems.
8 cl, 11 dwg
