Novel Heat-Resistant Isocyanate- Based Polymers
| Autor: | Vahid Sendijarevic, A. Sendijarevic, Kurt C. Frisch, M. Vlajic |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
chemistry.chemical_classification
Heat resistant Materials science Polymers and Plastics 02 engineering and technology Polymer Oxazolidone 021001 nanoscience & nanotechnology Elastomer Isocyanate Adduct chemistry.chemical_compound 020401 chemical engineering chemistry Polymer chemistry Materials Chemistry Thermal stability Adhesive 0204 chemical engineering 0210 nano-technology |
| Zdroj: | Journal of Elastomers & Plastics. 23:192-217 |
| ISSN: | 1530-8006 0095-2443 |
| DOI: | 10.1177/009524439102300304 |
| Popis: | This paper describes the preparation and properties of novel heat- resistant, isocyanate-based polymers. Poly(urethane-oxazolidones) (1/1 molar ratio) were prepared by reaction of NCO-terminated urethane prepolymers with polyepoxides. Poly(urethane-oxazolidone-isocyanurates) (3/3/1 molar ratio) were made by reaction of NCO-terminated urethane prepolymers with triglyci dyl isocyanurate. Poly(urethane-oxazolidone-isocyanurates) (3/3/2 molar ratio) were prepared by trimerization of equimolar mixtures of NCO-terminated urethane prepolymers and an NCO-terminated oxazolidone adduct. The poly(urethane-oxazolidone-isocyanurate) films exhibited very good stress-strain properties at room temperature (22°C), as well as at elevated temperature (150°C). The good thermal stability was also confirmed by TGA. These materials appear to be good candidates for heat-resistant elastomers, coatings, and adhesives. Poly(urethane-isocyanurates) (3/1 molar ratio) were also pre pared, and were compared with oxazolidone containing poly(urethane-iso cyanurates). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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