Research Progress in Applications of Phosphazene Compounds in Flame⁃retardant Polymers Field

doi:10.19491/j.issn.1001-9278.2021.02.018

Abstract

Abstract:

The paper briefly introduced the applications of phosphazene derivatives in the field of flame retardant polymeric materials in recent years， focusing on their effects on the thermal stability and flame?retardant performance of epoxy resin， polyurethane， polyester and polycarbonate/acrylonitrile-butadiene-styrene alloys. The possible flame-retardant mechanisms were discussed， and the development direction of phosphazene-based flame retardants was prospected.

Key words: hexachlorocyclotriphosphazene, flame retardant performance, epoxy resin, polyurethane, polyester, flame retardant mechanism

CLC Number:

TQ322.4

SONG Kunpeng, WANG Yinjie, LIU Jiping, FANG Zhuqing, YANG Weiwei, ZHENG Dongsen. Research Progress in Applications of Phosphazene Compounds in Flame⁃retardant Polymers Field[J]. China Plastics, 2021, 35(2): 107-118.

Figures/Tables 15

Fig.1. Molecular structure of 2, 2?bis(4?oxo?penta?glycidolcyclotriphosphazene phenyl) propane

Fig.2. Molecular structure of bisphenol?A bridged penta(anilino)cyclotriphosphazene

Fig.3. SEM of EP/BPA?BPP composites char after LOI tests

Fig.4. Molecular structure of LPN?EP

Fig.5. Molecular structure of 1, 1, 3, 3, 5, 5?Tri?helix (ethylenediamino)?cyclotriphosphazene

Fig.6. SEM of the char residues in epoxy composites with different magnification times

Fig.7. Molecular structure of CTP?EP

Fig.8. Molecular structure of hexa(4?acylhydrazone?2?methoxyphenoxy) cyclotriphosphazene derivatives

Fig.9. Molecular structure of poly(4?nitrophenoxy) phosphazene

Fig.10. SEM of ABS?DPP char residue magnified by 100 times and 200 times respectively

Fig.11. Molecular structure of azacycloalkenyl polyphosphazene

Fig.12. Molecular structure of three cyclophosphazene?triazine flame retardants

Fig.13. SEM of samples after cone calorimeter test

Fig.14. Molecular structure of hexa(phosphaphenanthrene?amino?phenoxy) cyclotriphosphazene

Fig.15. Molecular structure of hexa(phosphaphenanthrene?aminophenoxy) cyclotriphosphazene

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