Synthesis and performance of cyclic phosphorus-containing flame retardants
| Autor: | DongQuy Hoang, Bok Nam Jang, Jinhwan Kim |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
Thermogravimetric analysis Polymers and Plastics Phosphorus chemistry.chemical_element Condensed Matter Physics Phosphate Phosphonate chemistry.chemical_compound chemistry Mechanics of Materials visual_art Materials Chemistry visual_art.visual_art_medium Organic chemistry Degradation (geology) Polycarbonate Alkyl Fire retardant Nuclear chemistry |
| Zdroj: | Polymer Degradation and Stability. 93:2042-2047 |
| ISSN: | 0141-3910 |
| DOI: | 10.1016/j.polymdegradstab.2008.02.017 |
| Popis: | A series of organo-cyclic phosphorus compounds were synthesized in an attempt to find an efficient flame retardant (FR) for acrylonitrile-butadiene-styrene (ABS). The success of synthesis was confirmed by 1 H and 31 P NMR. Thermogravimetric analysis (TGA) results reveal that cyclic phosphorus compounds synthesized in this study show almost one step degradation between 250 and 400 °C and are believed to work in the vapour phase rather than in the condensed phase. From UL-94 test, V-0 rating was achieved at 15-35 wt% loading of cyclic or cyclic alkyl phosphonate FR and no rating at 35 wt% loading of cyclic phosphate for ABS. On the other hand, a much lower loading (7.5%) was needed to obtain V-0 rating for polycarbonate when 3,9-diphenyl-3,9-dioxa-2,4,8,10-tetraoxa-3,9-diphosphaspiro-5,5-undecane (PBPP) was added as FR. All the results show that the flame retarding effect is strongly dependent on the P content of the FR incorporated. The flame retardant mechanism of cyclic phosphorus compounds is also discussed. |
| Databáze: | OpenAIRE |
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