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4 results on '"Strel'nikov, V. N."'

3. Microheterogeneous Polyetherhydroxylurethane Elastomers with Controlled Phase Structure for Structural Adhesives.

Author

Strel'nikov, V. N., Senichev, V. Yu., Slobodinyuk, A. I., Savchuk, A. V., and Pogorel'tsev, E. V.

Subjects
*URETHANE, *STRENGTH of materials, *ADHESIVES, *ELASTOMERS, *OLIGOMERS, *POLYURETHANE elastomers, *EPOXY resins
Abstract

Polyetherhydroxylurethane elastomers were prepared from mixtures of epoxy urethane oligomers and diglycidyl urethane, synthesized using isophorone diisocyanate, and the properties of the products obtained were studied. Calorimetric and optical microscopic studies proved the heterogeneity of the materials obtained. These materials surpass in the strength and adhesion characteristics the analogs synthesized using toluene-2,4-diisocyanate. [ABSTRACT FROM AUTHOR]

Published
2019
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4. Preparation and Properties of Frost-Resistant Materials Based on Compounds of Oligoether Urethane Epoxides and Diglycidyl Urethane.

Author

Strel'nikov, V. N., Senichev, V. Yu., Slobodinyuk, A. I., Savchuk, A. V., Volkova, E. R., Makarova, M. A., Belov, Yu. L., Derzhavinskaya, L. F., and Selivanova, D. G.

Subjects
*FROST, *URETHANE, *EPOXY compounds, *OLIGOMERS, *ELASTICITY, *AMINES
Abstract

A procedure was suggested for preparing epoxy ether urethane oligomers via intermediate oligodiisocyanates with increased content of the starting 2,4-toluene diisocyanate. The procedure allows preparation of epoxy-containing oligomers with appreciable fraction of low-molecular-mass diglycidyl urethane. The presence of diglycidyl urethane in the binder enhances not only the adhesion but also the strength of the cured material without significantly affecting the glass transition point of the binder. Elastic materials prepared by curing the compounds studied with cylcoaliphatic amines exhibit enhanced levels of strength and low-temperature elasticity. [ABSTRACT FROM AUTHOR]

Published
2018
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