| Preparation and Properties of Low Smoke-Flame Retardant Polyurethane Elastomer |
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| DOI： |
| Key Words: polyurethane elastomer； synthesis； low smoke ； physical property； combustion performance ； orthogonal experimental design |
| Author Name | Affiliation | | MA Hui | North University of China | | LIU Yu-cun | North University of China | | GUO Jia-hu | North University of China；Sichuan Staff University of Science and Technology | | JING Su-ming | North University of China | | ZHONG Lun-chao | Beijing Institute of Technology | | HE Wei-ming | Sichuan Staff University of Science and Technology |
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| Abstract: |
| ln this study， polyurethane elastomer （PU） was prepared by using orthogonal experimental design to optimize the ratio of prepolymer components， the addition levels of flame retardant ，smokesuppression agent and charring agent. The physical properties and combustion performance of the PU elastomer were investigated. The results showed that ， the tensile strength of the optimized PU elastomer reached 3.99 MPa ， and the elongation at break was 800% . It possessed good charring effect and remarkable heat insulating effect. The limiting oxygen index reached 37.4% ，the ablation rate was0.35 mm·s-l ，and in the combustion test， the elastomer showed very little smoke or even no smoke. |
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