M. A. Vaniev, D. A. Nilidin, N. V. Sidorenko, Dang Minh Thuy, Phan Gok Tu, D. V. Demidov, I. A. Novakov
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引用次数: 0
Abstract
The influence of a tropical climate on the properties of polyurethane materials based on polyethers differing in the nature of polyol, diisocyanate component, chain extender, and hardener was studied. Results of exposure to natural climatic conditions of the tropical climate of South Vietnam showed that after 6 months of outdoor exposure, all samples exhibited a significant decrease in strength and elasticity, as well as a significant change in glass transition temperature. However, an assessment of biostability after 12 months of exposure in a mycological chamber revealed no noticeable deterioration in the physical and mechanical properties of polyurethanes. No features of relaxation transitions at low temperatures, as studied by differential scanning calorimetry (DSC), were also detected. Information obtained may be useful when selecting a polyurethane material for practical use in tropical climates.
期刊介绍：
Polymer Science, Series D publishes useful description of engineering developments that are related to the preparation and application of glues, compounds, sealing materials, and binding agents, articles on the adhesion theory, prediction of the strength of adhesive joints, methods for the control of their properties, synthesis, and methods of structural modeling of glued joints and constructions, original articles with new scientific results, analytical reviews of the modern state in the field.
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