RESISTANCE TO AGING AND VIBRATION LOADS OF A POLYMERIC COMPOSITE MATERIAL BASED ON THE AН-111 ANAEROBIC SEALANT

The paper presents methodology and research results of the infl uence of aging processes on the change in the strength characteristics of adhesive joints made with the AН-111 sealant and its nanocompositions. The thickness of the test polymer layer was 0.2 mm. Polymeric materials were aged using an accelerated method (based on GOST 9.707-81). Upon completion of 5, 10, 15, 20, 25, 30, 35, and 40 cycles, the adhesive strength of the AН-111 sealant and its composition were determined under axial shear. For research, an explosive machine P-5 was used. It was shown that the aging resistance of the nanocomposite is 15.4% higher than that of the unfi lled composition. The authors describe the methodology and bench test results characterizing the resistance of the studied polymer compositions to vibration loads. The oscillation amplitude of the plate was 1.0…1.2 mm. The thickness of the test polymer layer amounted to 0.2 mm. After completion of the tests on the vibration bench, after 5, 10, 15, 20, 25, and 30 hours, the samples were tested for strength with a P-5 tensile testing machine. The authors have established regularities of changes in the strength of adhesive joints depending on the number of loading cycles. It has been shown that the effect of vibration loads leads to a decrease in the strength characteristics of the AН-111 anaerobic sealant by 20.4%. In turn, the vibration resistance of the AН-111 + Taunit-M composition is 16.5% higher than that of a fi ller-free (non-pigmented) polymer composition.