Synthesis of multi‐element hybrid polyphosphonitrile microspheres and their flame retardant application in epoxy resins
نویسندگان
چکیده
Abstract In this paper, Salen‐Ni basis polyphosphazene microsphere (Salen‐PZN‐Ni), boric acid (BA), and 3‐aminopropyltriethoxysilane (KH‐550) were used as raw materials to prepare a new flame retardant Salen‐PZN‐Ni@BA@KH‐550 by surface modification. The thermal properties of epoxy resin (EP) composites studied. introduction refined the stability EP composites, well amount carbon residue at 800°C. At 5 wt% Salen‐PZN‐Ni@BA@KH‐550, limiting oxygen index (LOI) is increased from 25.4% 30.5% UL‐94 has been achieved with V‐1 rating. Meanwhile, mechanical Salen‐PZN‐Ni@BA@KH‐550/EP also improved. addition, good char formation ability caused reduction peak heat release rate, total maximum average rate smoke generation composites. All these results indicate that have wider range applications.
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ژورنال
عنوان ژورنال: Journal of Applied Polymer Science
سال: 2023
ISSN: ['1097-4628', '0021-8995']
DOI: https://doi.org/10.1002/app.54668