An overview of some recent advances in DOPO-derivatives
These DOPO-derivatives are used as flame retardants mainly in epoxy resins [3], [5], [11], [12], [13], [15], for applications in adhesives, composites, printed wiring boards and others [17]. As some halogenated flame retardants have been found to be toxic, the research on halogen-free flame retardants is gaining more and more importance [18].
A phosphorus-containing hyperbranched phthalocyanine flame
The flame retardant properties of epoxy thermosets were enhanced considerably with the incorporation of DOPO-CuPc. When the addition of DOPO-CuPc was 5 wt%, the LOI value increased to...
A DOPO-based phosphorus-nitrogen flame retardant bio-based
Although the studies above have shown that DOPO is widely used in the field of flame retardant epoxy resins, DOPO-based phosphorus-nitrogen intrinsic flame retardant bio-based epoxy resins have rarely been reported, as far as we known.
Phosphorus Containing Polyacrylamides as Flame Retardants
Abstract. Novel polymeric flame retardants based on two acrylamides and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) or 5,5-dimethyl- [1,3,2]dioxaphosphinane-2-oxide (DDPO) are described for several applications in HexFlow RTM6, a high-performance epoxy resin. Neat resin samples and carbon fiber-reinforced composites were tested
Exolit RP red phosphorus-based flame retardants – Clariant
Our Exolit RP line of flame retardantssafer fire safety based on red phosphorus. Red phosphorus makes matches ignite – and, due to the pure elemental activity obtained, is also one of most powerful flame retardants known. We offer this powerful non-halogenated additive in various stabilized, safe-to-handle forms that can provide potent fire
- Which phosphorus containing flame retardant is best for epoxy resins?
- A typical phosphorus-containing flame retardant, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), has been proved to be the effective flame retardant for epoxy resins 8. DOPO exhibit higher thermal and chemical stability than other uncycled organophosphorus compounds due to the biphenyl and heterophilic in structure 9.
- Are Dopo-based derivatives a flame retardant for epoxy resins?
- In summary, the DOPO-based derivatives enhanced the fire retarding performance of epoxy by gas phase-condensed phase flame-retardant mechanism. In conclusion, three kinds of DOPO-based derivatives with multiple phosphorous oxidation states were synthesized and applied as flame retardants for epoxy resins.
- Is Dopo a flame retardant?
- DOPO contains a reactive hydrogen bond which reacts easily with epoxy resins, aldehydes, acrylates, activated double bonds of benzoquinone, making it either a good flame retardant additive precursor or an integrative flame retardant . Hence, hydrogen phosphinates or phosphonates may be attached directly to an epoxy resin.
- Are phosphorus-containing compounds halogen-free flame retardants for epoxy resins?
- Phosphorus-containing compounds, as one of the most important halogen-free flame retardants for epoxy resins, have received widespread interest owing to their relatively environmental friendliness and high flame-retarding efficiency [11, 12].
- Can phosphorus phthalocyanine be used as a flame retardant additive?
- A hyperbranched phosphorus-containing copper phthalocyanine compound (DOPO-CuPc) was successfully synthesized and used as the flame-retardant additive to prepare flame-retarded epoxy thermosets. The addition of DOPO-CuPc led to a significant enhancement of the flame retardant properties of the epoxy resin.
- Which flame retardant is best for epoxy resins?
- Currently, phosphorus-containing flame retardants are favored among the various flame retardants due to low toxicity and abundant resources. A typical phosphorus-containing flame retardant, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), has been proved to be the effective flame retardant for epoxy resins 8.
