An overview of some recent advances in DOPO-derivatives: Chemistry and
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 novel DOPO derivative containing multifunctional groups aiming to
Unsaturated polyester resin (UPR) composites with excellent flame retardancy and high mechanical property is a great challenge to its widely application. In present work, a highly efficient flame retardant (MA-DOPO) containing nitrogen, sulfur and phosphorus elements was designed via a nucleophilic substitution reaction of amino and aldehyde
Original Article Piye Wu, Yongzhi Peng, Xiaomeng Zhang
unsaturated polyester resin. The thermal stability, flame ... halogen-free ame retardants have ... rivatives due to their high reactivity and flame-retardant efficiency [21–23]. Although DOPO
Bi-DOPO Structure Flame Retardants with or without Reactive Group
A novel reactive phosphorus-containing flame retardant 1,4-phenylene-bis((6-oxido-6H-dibenz[c,e][1,2]-oxaphosphorinyl) methylene) diacrylate (TDCAA-DOPO), with two symmetrical 9,10-dihydro-9-oxa-10-phosphaphena-nthrene-10-oxide structure (bi-DOPO), was synthesized and combined with unsaturated polyester resin (UPR) via cross-linking to prepare flame-retardant UPR (FR-UPR). To make clear both
Halogen-free flame retardants for application in
The necessity for a flame-retardant unsaturated polyester resin (UPR) was due to the fact that during combustion, this compound produces a lot of toxic gases, heat and smoke. Therefore, MH was an example of FR studied for delaying the propagation of fire after UPR ignition [ 54 ].
- Do halogen-free flame retardants reduce flammability of thermoset resins?
- Edited by Nurhan Onar Camlibel The chapter presents a positive effect of reduced flammability of thermoset resins, thanks to the use of halogen-free flame retardants (FRs) and multi-ingredient modifiers that combine conventional phosphorous/nitrogen additives interacting with nanofillers.
- What is a halogen free resin?
- It’s a Halogen-free reactive and additive product used in Epoxy resins for PCB and semiconductor encapsulation, Anti-yellowing agent of compound process for ABS, PS, PP, Epoxy resin and others Plastics for electronics, circuit board, linear polyester, polyamide, polyurethane. The recommended dosage, based on the resin, is from 2% up to 15%.
- What is Dopo flame retardant?
- Melt Point, C 245 min **Available in flake or powder form DOPO is a non-toxic, halogen-free flame retardant with a broad application - including for PU, epoxy, polyester, polyamides, and more.
- Can DGEBA based epoxy resin thermosets be flame retardant?
- Cone calorimeter data of DGEBA thermosets . Xu et al. synthesized a DOPO derivative and used it as a flame retardant for the improvement of fire behavior of DGEBA based epoxy resin thermosets cured with DDS.
- 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 non-reactive Dopo-based flame retardants be used in epoxy resins?
- This review covers the use of non-reactive DOPO-based derivative flame retardants currently available or under design and development for application in epoxy resins.
