Citation
Derouet D., . and Morvan F., . and Brosse J. C., . Flame-resistance and thermal stability of 1 4-polydienes modified by dialkyl (or aryl) phosphates. pp. 9-25. ISSN 0127-7065
Abstract
The chemical modification of 1 4-polydienes by dialkyl(or aryl) phosphates was considered in order to improve their flame-resistance. Chemical introduction of phosphorus onto polydienes was carried out by a two-step process: partial epoxidation of unsaturated units and introduction of the dialkyl(or aryl) phosphate using the reactivity of the P-OH acidic bond towards oxirane rings of epoxidised 1 4-polydienes (synthetic polybutadiene polyisoprene and liquid natural rubber). Incorporation of phosphorus (around 1.1-1.2 weight percent) in crosslinked polydienes is generally sufficient to produce air fire-resistant materials. The best limiting oxygen indices (LOI) are obtained with diphenyl phosphate. Degradation kinetics of modified polydiene networks at moderate temperatures (from 200C to 400�C) are more and less similar to those of unmodified specimens but the weight losses are weaker after 400C. The residual masses after 600C are relatively important compared to the unmodified specimens which are entirely decomposed at this temperature.
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Abstract
The chemical modification of 1 4-polydienes by dialkyl(or aryl) phosphates was considered in order to improve their flame-resistance. Chemical introduction of phosphorus onto polydienes was carried out by a two-step process: partial epoxidation of unsaturated units and introduction of the dialkyl(or aryl) phosphate using the reactivity of the P-OH acidic bond towards oxirane rings of epoxidised 1 4-polydienes (synthetic polybutadiene polyisoprene and liquid natural rubber). Incorporation of phosphorus (around 1.1-1.2 weight percent) in crosslinked polydienes is generally sufficient to produce air fire-resistant materials. The best limiting oxygen indices (LOI) are obtained with diphenyl phosphate. Degradation kinetics of modified polydiene networks at moderate temperatures (from 200C to 400�C) are more and less similar to those of unmodified specimens but the weight losses are weaker after 400C. The residual masses after 600C are relatively important compared to the unmodified specimens which are entirely decomposed at this temperature.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Phosphates |
| AGROVOC Term: | Epoxides |
| AGROVOC Term: | Processing |
| AGROVOC Term: | Solvents |
| AGROVOC Term: | Phosphorus |
| AGROVOC Term: | Thermogravimetric analysis |
| AGROVOC Term: | Heat treatment |
| AGROVOC Term: | Temperature resistance |
| AGROVOC Term: | Cross-linking |
| AGROVOC Term: | Elastomers |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 06:28 |
| URI: | http://webagris.upm.edu.my/id/eprint/23355 |
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