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Adhesive Bond Strength Calculation of Reinforcing Fibers with Polymers by the “Loop” Method

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Mechanics of Composite Materials Aims and scope

The method of evaluation the adhesion strength for the fiber-polymer bond by pulling out a thread from the adhesion cell formed by a loop tightened into a knot allows one to determine the adhesion of different types of reinforcing fibers to various thermosetting and thermoplastic polymer matrices. When tightening a knot from the loop covering the tested thread, the contact pressure required in the area of adhesion joint is ensured. The geometric model was developed to determine the contact area in the adhesion cell of this type. When calculating the contact area, the thickness (linear density) of the threads forming the adhesion cell, as well as the density of the material is taken into account. The influence of pressure and time of the contact of the fiber surface with the thermoplastic melt, as well as the melt temperature and content of nanodispersed fillers on the adhesive strength is shown.

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Acknowledgement

We express our gratitude to Cand. Chem. Sci. I. N. Senchikhin (IPCE RAS) for conducting research on an electron microscope.

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Correspondence to S. V. Kotomin.

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Translated from Mekhanika Kompozitnykh Materialov, Vol. 58, No. 1, pp. 197-212, January-February, 2021. Russian DOI: 10.22364/mkm.58.1.11.

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Kotomin, S.V., Obidin, I.M. & Pavluchkova, E.A. Adhesive Bond Strength Calculation of Reinforcing Fibers with Polymers by the “Loop” Method. Mech Compos Mater 58, 141–150 (2022). https://doi.org/10.1007/s11029-022-10017-2

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