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The research results of the effect of concentration of injected mineral filler on change in adhesion strength of acrylic adhesive composition to the metal substrate are given in the article. The adhesive composition was prepared based on pre-compounded reaction system: the stabilized monomer – methyl methacrylate and polymer modifier – sterol copolymer with methyl methacrylate with followed filling and polymerization in the presence of a redox system. It is shown that the mobilization to resource preservation of the adhesive contact at the allowable amount of the filler and the thickness of the adhesive layer is due to the overall contribution of the dispersed phase in the change of the structure and macrophysical properties. Experimental data confirm the obtained dependencies: the adhesive strength of the adhesive from the contact area to steel wire; density, glass transition temperature and the calculated value of the Simcha-Boyer constant of block samples from the amount of the filler; character of reducing dynamic shear modulus of the filled composition during heating. It is suggested that the decrease in density in a volume of polymer phase of filled system provides a slight decrease in adhesion strength of acrylic adhesive to the substrate.

FEATURES OF CHANGES OF STRUCTURE AND ADHESIVE PROPERTIES FOR ACRYLIC ADHESIVES UNDER THE INFLUENCE OF THE FILLER