Lazhevska O. The regularities of cross-linking in diamond-abrasive composites on the basis of polymers capable to reversible restructuring

The thesis is devoted to the study of cross-linking processes in composites on the basis of polymers capable to reversible change of structure under an operation of the variable exterior factors. The bonds on the basis of epoxy oligomers, modified by complex derivatives of copper and nickel with the optimal content 6-8 and 8-10 % accordingly are obtained. It is established, that metal-complex fragments incorporated to polymeric grid can exist in two structural states: tetraamine and chelated with coefficient of elasticity and microhardness accordingly 3,24-4,65 and 1,32-1,79 against 1,35-1,85 and 0,96-1,14 GPа for a chelated state. The opportunity of relative converted transferrings of structures of metal-complex fragments under an operation of factors of a zone of abrasive cutting, for bonds and composites hardened in pressure range 30-70 МPа is proved. The ability of bond to change the coefficient of elasticity for 10-3 - 10-4 s allows a tool composite to adapt continuously for requirements of interaction with a job surface.