Оценка прочности адгезионной связи волокно - термопластичная матрица методом петли

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Оценка прочности адгезионной связи волокно — термопластичная матрица…
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Evaluating fiber-thermoplastic matrix adhesive bond
strength using “loop” method
© S.V. Kotomin1,2
1Bauman Moscow State Technical University, Moscow, 105005, Russia
2 FSFS Institute of Petrochemical Synthesis RAS, Moscow, 119049, Russia
The fiber-matrix adhesion bond strength is an important feature in the development of
high-strength reinforced plastics. Evaluation of the adhesion of the reinforcing fibers,
such as aramid ones, to thermoplastic matrix using existing techniques involve high com-
plexity sample preparation, and in addition, require additional tools for testing. The arti-
cle discusses the method of determining the fiber-matrix adhesive bond strength based on
using an adhesion cell in the form of a node of the loop on microplastic obtained by im-
pregnating multifilament thread or bungle of threads with thermoplastic melt. In the pro-
cess of preparing samples the possibility of pressure adjustment in the area of adhesive
contact between fiber surface and matrix melt is realized. Tests are carried out on a
standard tensile testing machine without additional equipment, which is important for
use in laboratories and educational institutions. The extreme dependence of fiber-
thermoplastic matrix adhesive bond strength on the contact time and the temperature of
the melt are shown by the example of Kevlar aramid thread and polysulfone.
Keywords: thermoplastics, reinforced plastics, adhesion, aramid fibers.
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