Decomposition and combustion of EVA and LDPE alone and when fire retarded with ATH
| Autor: | T. Richard Hull, Joseph Zilberman, Kevina McGarry, W David Woolley |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Controlled atmosphere
Thermogravimetric analysis Materials science Polymers and Plastics Organic Chemistry Thermal decomposition Ethylene-vinyl acetate Polyethylene chemistry.chemical_compound Low-density polyethylene chemistry otorhinolaryngologic diseases Materials Chemistry Thermal stability Composite material Fire retardant |
| Zdroj: | Polymer International. 49:1193-1198 |
| ISSN: | 1097-0126 0959-8103 |
| Popis: | Conventional thermogravimetric analysis (TGA) and a controlled atmosphere horizontal tube furnace have been used to study thermal degradation, in air and nitrogen, of ethylene-vinyl acetate copolymer (EVA) and low-density polyethylene (LDPE). The addition of aluminium oxide trihydrate (ATH) as a fire retardant was investigated. At 400 °C and at 450 °C, in both air and nitrogen, LDPE showed greater thermal stability in conventional TGA than the EVA copolymer. However, in the tube furnace experiments, at both temperatures, EVA showed comparable thermal stability to LDPE in nitrogen, and superior thermal stability to LDPE in air. This is thought to be the result of the formation of a protective layer, which is more effective at 400°C than at 450°C. In combination with approximately 55% ATH, the rate of mass loss of LDPE is significantly reduced at 400 °C, but the rate of mass loss of EVA is significantly increased. This may result from the evolution of water disrupting the protective layer. At 450 °C, ATH reduces the rate of mass loss of both LDPE and EVA to a similar extent in the absence of a coherent protective layer. |
| Databáze: | OpenAIRE |
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