Flame retardant mechanism of polymer/clay nanocomposites based on polypropylene
| Autor: | Mingshu Yang, Guangjun Hu, Chungui Zhao, Shimin Zhang, Huaili Qin |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
inorganic chemicals
chemistry.chemical_classification Polypropylene Materials science Nanocomposite Polymers and Plastics Organic Chemistry food and beverages Polymer engineering.material complex mixtures Polymer clay chemistry.chemical_compound chemistry Materials Chemistry engineering Organoclay Dehydrogenation Char Composite material Fire retardant |
| Zdroj: | Polymer. 46:8386-8395 |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/j.polymer.2005.07.019 |
| Popis: | The combustion behavior and thermal-oxidative degradation of polypropylene/clay nanocomposite has been studied in this paper. The influence of compatibilizer, alkylammonium, organoclay, protonic clay and pristine clay is considered, respectively. The decrease of heat release rate (HRR) is mainly due to the delay of thermal-oxidative decomposition of the composites. The active sites on clay layers can catalyze the initial decomposition and the ignition of the composites. On the other hand, the active sites can catalyze the formation of a protective coating char on the samples. Moreover, the active sites can catalyze the dehydrogenation and crosslinking of polymer chains. Accordingly, the thermal-oxidative stability is increased and HRR is decreased. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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