Synthesis of an effective bio-based flame-retardant curing agent and its application in epoxy resin: Curing behavior, thermal stability and flame retardancy
| Autor: | Luo-Xin Wang, Zong-Min Zhu, Junsheng Wang, Ke Shang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Polymers and Plastics 02 engineering and technology Epoxy 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Combustion 01 natural sciences 0104 chemical sciences Limiting oxygen index Mechanics of Materials visual_art Cone calorimeter Materials Chemistry visual_art.visual_art_medium Char 0210 nano-technology Curing (chemistry) Intumescent Fire retardant Nuclear chemistry |
| Zdroj: | Polymer Degradation and Stability. 167:179-188 |
| ISSN: | 0141-3910 |
| DOI: | 10.1016/j.polymdegradstab.2019.07.005 |
| Popis: | In this work, a bio-based macromolecule ammonium phytic acid named as PA-AEP was synthesized successfully via neutralization reaction between phytic acid (PA) and N-aminoethylpiperazine (AEP) and served as a monocomponent flame-retardant curing agent to improve the flame retardancy and smoke suppression of epoxy resin (EP). Curing behavior, flame retardancy and combustion behavior of PA-AEP cured epoxy resin were investigated. By comparison with EP/AEP reference sample, EP/PA-AEP samples showed good flame retardancy and smoke suppression effect because of the addition of PA-AEP. The PA-AEP cured EP sample passed UL-94 V-0 rating and achieved to a limiting oxygen index (LOI) value of 28.0% with 20 wt% PA-AEP. Cone calorimeter test results showed that, compared with EP/20% AEP reference sample, both the peak of heat release rate (PHRR), total heat release (THR), the peak of smoke production release (SPR) and total smoke production (TSP) of EP/20 wt% PA-AEP sample were decreased by 44.4%, 55%, 49% and 80.8%, respectively. In addition, by analyzing the char residues and volatile pyrolysis products, it was concluded that PA-AEP mainly played an important role in condensed phase which was associated with the formation of phosphorus-rich intumescent char layer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect