Affiliation:
1. N.N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow
2. G.S. Petrov Institute of Plastics
Abstract
The concentration dependences of the adhesive strength, τ, of joints of 150 μm diameter steel wire and modified epoxy binder were investigated. The modifier used was PSK-1 polysulphone of different molecular weight, M. The concentration, C, of PSK-1 was varied from 5 to 20 wt%. It was shown that the form of the τ-C curves changes with change in M. At M = 5000 and 10 000, τ is not dependent on C; at M = 17 000 and 27 000, the τ-C relationship is described by a curve with a maximum. At M = 35 000 and 42 000, the adhesive strength decreases with increase in C. The factors affecting the measured value of τ in the case of epoxides modified with heat-resistant thermoplastics are considered.
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4 articles.
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