Study of cured hot melt adhesive epoxy binders by sclero- and microhardness methods

Salakhova R.K., Veshkin E.A, Apalkova A.V., Simirgina N.D.
UDC
621.742.48
DOI
10.18577/2307-6046-2025-0-12-12-24
Article PDF (Russian) (922.57 KB)
How to cite
Salakhova R.K., Veshkin E.A, Apalkova A.V., Simirgina N.D. Study of cured hot melt adhesive epoxy binders by sclero- and microhardness methods // Proceedings of VIAM. 2025. No. 12. DOI: 10.18577/2307-6046-2025-0-12-12-24. URL: https://test.viam.ru/en/journal/2025/12/2
Keywords
hot melt adhesives, floor panel sheetings, microhardness, sclerometry, scratch resistance force, degree of curing, degree of conversion, volumetric anisotropy coefficient
Abstract

The results of cross-sectional microhardness measurements grade binders (compositions I–VII) are presented. Volumetric anisotropy coefficients are calculated, and the correlation between polymer matrix microhardness and the indenter scratch resistance parameter is studied. A comparative analysis of microhardness changes in the height direction of the samples and sclerograms obtained using an ST-01 laboratory scratch tester is conducted. For the low-flammability hot melt adhesive binder (composition VII), the optimal two-stage curing mode is selected, and the degree of polymer conversion is determined.

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