Abstract
Currently, there is an increasing demand for the creation of new technologies for the restoration of parts, primarily for body parts. The use of polymer materials makes it possible to reduce the cost of their restoration. (Research purpose) The research purpose is developing a shaping adhesive composition for the repair of machine parts and equipment with high technological value. (Materials and methods) Modified resin CMID-SM5, epoxy resin ED-22 and hardeners I-5M, PEPA, DTB-2 were used as polymer materials. The adhesive properties of the adhesive composition for shear at normal, low and elevated temperatures were determined according to GOST 14759-69. It has been shown that the essence of the method is to determine the magnitude of the destructive force during stretching of a standard sample glued together by efforts tending to shift one half of the sample relative to the other. Tests were carried out on the R-5 bursting machine. Studies were carried out with a gradual increase in the load until the sample was destroyed at a machine speed of 10 millimeters per minute. The nature of the destruction is estimated as a percentage of the nominal bonding area with an accuracy of no more than 5-10 percent. (Results and discussion) It was noted that the main property of the structural material is the permissible compression stress. Compression tests were carried out on cylindrical samples made of different polymer materials. Experimental studies with ED-22 epoxy resin have shown that the compositions with Etal-45T7 and DETA hardener have the highest normal compression stress. (Conclusions) Experimental studies have shown that the best polymer composition for repairing parts is based on ED-22 epoxy resin with DETA hardener. This composition can be used for the repair of machine parts and equipment.
Published Version
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