The adhesive strength of a fiber-polymer interface is determined, where epo
xy resin blends and linear heat-resistant thermoplastics - polysulfone (PSF
) and polyetherimide (Ultem) - are used as matrices. Steel wire and polyami
de (nylon-6) fibers are taken as reinforcing fillers. It is shown that the
addition of PSF to epoxy resin results in a maximum on the concentration cu
rve corresponding to a 10% PSF content. It is also found that the adhesive
strength of the ED-20+Ultem-steel wire interface is practically independent
of the modifier content under low (up to 10%) Ultem concentrations.