A bio-based phosphaphenanthrene-containing derivative
synthesized an oligomer containing DOPO. A er curing, the ame retardant epoxy resin had excellent ame retardant performance and signi cantly increased glass transition temperature. At 15% addition, it can pass UL-94 V-0 grade, and the LOI was as high as 36%. Although these DOPO-based derivatives have good ame retardant eect on epoxy resin
A Liquid Phosphaphenanthrene-Derived Imidazole for Improved
A Vanillin-Derived, DOPO-Contained Bisphenol as a Reactive Flame Retardant for High-Performance Epoxy Thermosets. Journal of Renewable Materials 2025 , 10 (5) , 1349-1364.
US8536256B2 - DOPO-derived flame retardant and epoxy resin
DOPO-derived flame retardant and epoxy resin composition Abstract This invention relates to 9,10-Dihydro-9-Oxa-10-Phosphaphenantrene-10-oxide derived additive flame-retardants,...
An overview of some recent advances in DOPO-derivatives
Kishimoto D, Umeki Y. High melting point flame retardant crystal and method for manufacturing the same, epoxy resin composition containing the flame retardant, and prepreg and flame retardant laminate using the composition. Patent U. S 20130053473 A1. 2013.
Bio-based flame retardants to polymers: A review - ScienceDirect
This new core-shell flame retardant is applied to epoxy resin to improve its flame retardancy. The synthesis schematic diagram of the flame retardant is shown in Figure. When the addition amount of [email protected]/MA is 7.0 wt%, the flame retardant performance of the composite is the best. The LOI value was increased to 30.9%, and UL-94
- What are reactive Dopo based flame retardants for epoxy resins?
- This review focuses on recent advances in reactive DOPO–based flame retardants for epoxy resins, including reactive monomers, curing agents and hybrid structures. There are also highlighted fire retardant mechanisms of the DOPO derivatives and thermal and mechanical features of the epoxy systems.
- What is dopamine modified Dopo da for flame retardant thermosetting epoxy resins?
- The flame retardant mechanism of flame retardant was analyzed. DOPO-DA promotes the curing process and improves the mechanical properties. In this work, we synthesized a 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) derivative flame retardant dopamine modified DOPO (DOPO-DA) for flame retardant thermosetting epoxy resins (EP).
- What is a Dopo flame retardant?
- Notably, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and its derivatives are effective flame retardants for epoxy resins, enhancing char formation in the condensed phase and releasing phosphorus-oxygen radicals that act as free radical scavengers in the gas phase , , .
- Is Dopo a good choice for epoxy resin?
- Although a large number of DOPO derivatives has been designed and used for epoxy resin, some issues still need to be improved, such as migration of flame retardants, deterioration of mechanical properties, processibility, economic competitiveness, and so on.
- Can bio-based flame retardant be used in epoxy resin composites?
- In summary, this bio-based flame retardant featuring multiple reactive groups demonstrates promising potential for practical applications, offering significant advancements in flame retardancy and mechanical performance of epoxy resin composites.
- Are epoxy resins flammable?
- Unfortunately, epoxy resins have the disadvantage of being highly flammable and thus require suitable modifications with reactive or non-reactive flame retardant additives. Recent literature have shown that the derivatives 9,10–dihydro–9–oxa–10–phosphaphenanthrene–10–oxide (DOPO) are the most researched flame retardants for epoxy resins.
