Influence of composition of polyurethane dispersions on the hardness of composite polishing materials
https://doi.org/10.35164/0554-2901-2026-02-23-26
Abstract
The influence of the composition of aqueous polyurethane dispersions on the hardness of composite polishing materials obtained by impregnating a non-woven needle-punched fabric made of polyethylene terephthalate fibers with a linear density of 0.33 tex with the dispersions has been studied. Additionally, the effect of change in the fabric’s volume during impregnation process on the hardness of the materials was taken into account. IMPRANIL DL 1380 (PRC) and domestic Aquapol-11 and Aquapol-21 dispersions were used. The relationships between the hardness of the composite materials and the degree of impregnation as well as the porosity coefficient have been obtained. At the same degree of impregnation, the composite materials obtained by impregnating the fabric with IMPRANIL DL 1380 dispersion (PRC) exhibit the maximum hardness. The hardness of materials depends on the mobility of the fibers of the surface layer of the fabric and composite materials. The change in the structure of the surface layer of the fabric during the impregnation process is determined by the wettability of the fibers by the polyurethane dispersions.
About the Authors
O. V. Kozhevnikova
A.N. Kosygin Russian State University
Russian Federation
Russian Federation
Moscow
N. I. Godin
A.N. Kosygin Russian State University
Russian Federation
Russian Federation
Moscow
A. Yu. Zhalybina
Moscow Polytechnic University
Russian Federation
Russian Federation
Moscow
A. S. Sorokina
Moscow Polytechnic University
Russian Federation
Russian Federation
Moscow
A. V. Dedov
Moscow Polytechnic University
Russian Federation
Russian Federation
Moscow
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Review
For citations:
Kozhevnikova O.V., Godin N.I., Zhalybina A.Yu., Sorokina A.S., Dedov A.V. Influence of composition of polyurethane dispersions on the hardness of composite polishing materials. Plasticheskie massy. 2026;1(2):23-26. (In Russ.) https://doi.org/10.35164/0554-2901-2026-02-23-26
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