Journal
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
Volume 61, Issue 5, Pages 461-470Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/25740881.2021.1991954
Keywords
TPV; ov-poss; combustion properties; thermal properties; combustion mechanism
Categories
Funding
- Natural Science Research Foundation for Introduction of Talent and Doctor [2019QDZ59]
- Natural Science Research Project of Anhui Province [KJ2020A0450]
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The addition of OV-POSS improves the thermal stability of TPV systems, reduces the combustion rate, decreases the release of CO and CO2, and increases the amount of carbon formation. While OV-POSS may slightly reduce the mechanical properties of TPV, it plays a positive role in enhancing flame-retardant properties and reducing the risk of fire.
PP/EPDM (TPV) is a common thermoplastic elastomer with excellent performance and a wide range of uses. Polyhedral oligomeric silsesquioxane (POSS) with its own functional organic group (OV-POSS) was used to improve the combustion performance of TPV systems. 1 wt%, 3 wt% and 5wt% OV-POSS were added to TPV respectively, and their mechanical properties and thermal stability were tested. The results showed that the TPV mechanics performance of OV-POSS was slightly reduced, but the thermal stability was improved. Cone test results showed a 53% reduction in the heat release rate of TPV containing 5wt% OV-POSS compared with TPV without adding OV-POSS. The release of CO and CO2 also decreased significantly, and the amount of carbon formation increased from 1.1% to 14.8%. As can be seen from TG-IR analysis, the addition of OV-POSS slows down the thermal decomposition process of hydrocarbons. OV-POSS was added to improve flame-retardant properties and reduces fire risk of TPV.
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