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ACTIVATED VOLLASTONITE IMPACT UPON COMPRESSION STRENGTH AND ELASTICITY COEFFICIENT OF EPOXIDE MATERIALS FOR MECHANICAL ENGINEERING

The impact of natural vollastonite of different dispersion degree upon compression strength and an elasticity coefficient of epoxy materials of cold curing with aminophenol AF-2 is investigated. The impact of the activation of vollastonite surface (AVS) with different chemical structure upon these operational characteristics is shown. It is defined that filling with natural vollastonite increases an elasticity coefficient of epoxy materials, but decreases their strength characteristics at compression. At the same time the surface activation of this filling compound with quaternary ammonium salts irrespective of their structure reduces an elasticity coefficient, but increases considerably epoxy material strength at compression. The vinylsilane application as AVS does not give such an evident effect of changing the values described.