Synthesis of a Polyhedral Oligomeric Silsesquioxane (POSS) containing Phenyl and DOPO (7Ph-T7-DOPO) and its thermal stability

DOI

10.2991/icimm-15.2015.317How to use a DOI?

Keywords

polyhedral oligomeric silsesquioxanes; DOPO; 7Ph-T7-Vinyl; 7Ph-T7-DOPO; flame retardant

Abstract

A new type of polyhedral oligomeric silsesquioxane (POSS) (7Ph-T7-Vinyl) containing phenyl and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) was synthesized from phenyltrimethoxysilane, trichlorovinylsilane, and DOPO in high yield. This product was subjected to addition reaction using an AIBN catalyst in toluene. The structure of 7Ph-T7-DOPO was characterized by 1HNMR and FTIR, and 7Ph-T7-DOPO exhibited a crystal structure of (RSiO1.5) n. TGA curve analysis showed the high thermal stability of the cage-like compound. The flame-retardant properties of the EP composites were also tested in terms of limiting oxygen index (LOI) and UL-94. Incorporation of 2.5 wt. % DOPO-POSS into epoxy resin (EP-2.5) resulted in an LOI of 27.5 and UL-94 rating of V-1 (t1 = 34 s and t2 = 0 s). All of these results suggested that the 7Ph-T7-DOPO exhibited high thermal stability.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Feng Zheng
AU  - Sheng Han
AU  - Jin Han
PY  - 2015/07
DA  - 2015/07
TI  - Synthesis of a Polyhedral Oligomeric Silsesquioxane (POSS) containing Phenyl and DOPO (7Ph-T7-DOPO) and its thermal stability
BT  - Proceedings of the 5th International Conference on Information Engineering for Mechanics and Materials
PB  - Atlantis Press
SP  - 1706
EP  - 1711
SN  - 2352-5401
UR  - https://doi.org/10.2991/icimm-15.2015.317
DO  - 10.2991/icimm-15.2015.317
ID  - Zheng2015/07
ER  -