Investigation of the Influence of Fiber Chemical Nature on the Adhesion Strength Value

The article presents the results of an experimental assessment of the adhesive strength of glass, carbon, and basalt plastics determined by the short beam and pull-out methods. It has been established that the adhesive strength values found by the short beam method depend very little on the chemical nature of a fiber, since the differences between them (using the same matrix and molding technology) do not exceed 5%. The adhesion strength values determined by the pull-out method for samples made with basalt fiber are 12.5% lower than for glass ones and 20% lower than for carbon ones. The article presents the results of statistical analysis, as well as the fracture energy values and the work spent on overcoming friction forces for all types of samples studied.