Thermostability of Urethane Elastomers Based on p-Phenylene Diisocyanate
| Autor: | D. P. Higley, S. Yang, Han X. Xiao, Kurt C. Frisch, J.E. Kresta |
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| Rok vydání: | 1994 |
| Předmět: |
Thermal oxidation
chemistry.chemical_classification Materials science Polymers and Plastics 02 engineering and technology 021001 nanoscience & nanotechnology Elastomer Polyester chemistry.chemical_compound 020401 chemical engineering chemistry Polyol Phenylene Adipate Polymer chemistry Materials Chemistry Organic chemistry 0204 chemical engineering 0210 nano-technology Thermostability Polyurethane |
| Zdroj: | Journal of Elastomers & Plastics. 26:237-251 |
| ISSN: | 1530-8006 0095-2443 |
| DOI: | 10.1177/009524439402600303 |
| Popis: | Polyurethane (PU) elastomers based on p-phenylene diisocyanate (PPDI), poly(oxytetramethylene) glycol or poly(1,6 hexamethylene adipate) gly col and 1,4-butanediol were prepared at different NCO/OH ratios, and the mechanical property changes of these elastomers after heat aging at 150 °C were examined in the presence and absence of various antioxidants. It was found that the highest retention of mechanical properties of the polyether based PU elastomers were achieved with Irganox 1010 followed by Irganox 1024. There was no synergism observed in the combinations of antioxidants. The thermal oxidation stability of PUs based on polyester polyol was better than one based on polyether polyol. Both NCO/OH ratio and the methods of ad dition of antioxidants to PU elastomers affect the final thermostability of the elastomers. |
| Databáze: | OpenAIRE |
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