A new phosphorus flame‐retard curing agent for epoxy resin/anhydride system

A new phosphorus containing anhydride (DPO‐MA) curing agent is successfully synthesized via the addition reaction between diphenylphosphinoxid (DPO) and maleic anhydride (MA). It can improve the flame retardancy of epoxy resin (EP) without significantly deteriorating its mechanical properties. Due t...

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Published in:Polymers for advanced technologies 2022-03, Vol.33 (3), p.927-936
Main Authors: Han, Yichen, Zhao, Hui, Chen, Jichuan, Wang, Xinlong, Chen, Lixin, Ran, Di, Wang, Zhenyu, Zeng, Panjin
Format: Article
Language:English
Subjects:
curing agent
Curing agents
epoxy resin/anhydride system
Epoxy resins
flame retardancy
Maleic anhydride
Mechanical properties
Molecular chains
Phosphorus
Reagents
Vapor phases
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cited_by cdi_FETCH-LOGICAL-c2938-aa5b3a2a2c8f33b7067415b2dc5b94fbfd5cc803efc314e457067a1684321dda3
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container_issue 3
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container_title Polymers for advanced technologies
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creator Han, Yichen
Zhao, Hui
Chen, Jichuan
Wang, Xinlong
Chen, Lixin
Ran, Di
Wang, Zhenyu
Zeng, Panjin
description A new phosphorus containing anhydride (DPO‐MA) curing agent is successfully synthesized via the addition reaction between diphenylphosphinoxid (DPO) and maleic anhydride (MA). It can improve the flame retardancy of epoxy resin (EP) without significantly deteriorating its mechanical properties. Due to the high efficiency of the gas phase flame‐retard mechanism, only 1.0 wt% of phosphorus is sufficient to increase the LOI value to 33.1% and UL‐94 to V0 rating. Cone calorimetry data shows that the peak of heat release decreases more than 42% than that of neat EP during combustion. Besides, the rigid DPO skeleton in the molecular chain can greatly improve the Tg value of the DPO‐MA/EP‐1.0, which is as high as 125°C, much higher than that of neat EP. Thus, this work exhibits a great potential value for EP materials.
doi_str_mv 10.1002/pat.5568
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source Wiley-Blackwell Read & Publish Collection
subjects curing agent
Curing agents
epoxy resin/anhydride system
Epoxy resins
flame retardancy
Maleic anhydride
Mechanical properties
Molecular chains
Phosphorus
Reagents
Vapor phases
title A new phosphorus flame‐retard curing agent for epoxy resin/anhydride system
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