Metal compound-enhanced flame retardancy of intumescent epoxy resins containing ammonium polyphosphate
| Autor: | Yun Liu, Yu-Zhong Wang, De-Yi Wang, Jun-Sheng Wang, Jiang Liu, Hai-Bo Zhao, Yan-Peng Song |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Materials science
Polymers and Plastics Epoxy Condensed Matter Physics Limiting oxygen index chemistry.chemical_compound chemistry Mechanics of Materials Cone calorimeter visual_art Polymer chemistry Materials Chemistry visual_art.visual_art_medium Thermal stability Ammonium polyphosphate Intumescent Fire retardant Flammability Nuclear chemistry |
| Zdroj: | Polymer Degradation and Stability. 94:625-631 |
| ISSN: | 0141-3910 |
| DOI: | 10.1016/j.polymdegradstab.2009.01.006 |
| Popis: | A series of intumescent flame-retardant epoxy resins (IFR-EPs) were prepared only by adding a 5 wt% total loading of ammonium polyphosphate (APP) and metal compounds. All the samples could achieve V-0 rating and did not generate dripping during UL-94 testing. The limiting oxygen index (LOI) values of the samples with 4.83 wt% APP and 0.17 wt% CoSA increase from 27.1 to 29.4, compared with epoxy resin containing 5 wt% APP. The samples also showed excellent water resistance of flame retardancy in 30 °C and 70 °C water for 168 h. The LOI results show that the composition of metal compounds (metal ions and ligands/anions) and the mass ratios of APP to metal compounds affect the flame retardancy of the samples. TG results indicate that the catalytic effect of CoSA on the decomposition of both APP and the epoxy resins containing APP is better than that of CuSAO. The fire behavior of epoxy resin and epoxy resins containing APP with/without CoSA were investigated by cone calorimeter. Cone calorimeter parameters of the samples such as HRR, THR, TSP and COP indicate that the addition of APP and CoSA improves the fire safety of epoxy resin significantly, and CoSA shows an obvious catalytic effect. |
| Databáze: | OpenAIRE |
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