A phosphorus-containing hyperbranched phthalocyanine flame retardant
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...
High performance flame-retardant organic–inorganic hybrid epoxy
Furthermore, the R800 values of POSS/D-bp/DGEBA hybrid composites are significantly increased following the flame retardation, with EP-6 exhibits the highest value of 25.6 wt%. Fig. 5 TG and DTG curves of POSS/D-bp/DGEBA hybrid composites under nitrogen or air atmospheres.
High-efficiency phosphorus/nitrogen-containing flame retardant on epoxy
Especially, phosphorus-containing compounds have been regarded as an efficient flame retardant due to their high-efficiency flame retardancy. The significant merits of replacing halogens with phosphorus include high flame-retardant efficiency, less toxic products produced in flames, and less damage to the environment.
An overview of some recent advances in DOPO-derivatives: Chemistry and
13a – b were used as curing agent for o-cresol formaldehyde novolac epoxy (CNE) resin meant for application in electronic devices. 13b was shown to have much better flame retardancy than 13a, which is attributed to the increased content of aromatic group.
Novel DOPO-based flame retardants in high-performance carbon fibre
RTM6 was heated up to 353 K and then DOPP and DOPI, respectively, were added with a phosphorus concentration of 2 wt.%. The mixture was stirred at 353 K for 5 min, exposed to a KBr target as thin film, and then immediately placed in the vertically mounted FTIR hot stage cell.
- 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.
- Are phosphorous oxidation states a flame retardant for epoxy resins?
- In conclusion, three kinds of DOPO-based derivatives with multiple phosphorous oxidation states were synthesized and applied as flame retardants for epoxy resins. FTIR and NMR spectra confirmed the successful synthesis of these DOPO-based derivatives.
- Does phosphorus oxidation affect fire behaviour of epoxy resin composites?
- Influence of the oxidation state of phosphorus on the decomposition and fire behaviour of flame-retarded epoxy resin composites Two novel, halogen-free, phosphorus-based oligomeric flame retardants are investigated in the commercial epoxy resin RTM6 and ∼70wt.% carbon fibre RTM…
- 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].
- 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.
- Can phosphorus-nitrogen flame retardant be used in epoxy resin?
- You et al. reported a new type of phosphorus-nitrogen flame retardant (TNTP) and applied it in epoxy resin 15. It was found that a 5 wt% loading of TNTP can impart satisfactory flame retardancy and thermal stability to epoxy resins.
