A Strategy to Achieve the Inherently Flame-retardant PA56 by
Organophosphorus-based flame retardants, such as 2-carboxyethyl (phenyl) phosphinic acid (CEPPA), 4,4′- (phenylphosphinylidene) bis [benzoic acid] (BCPPO) and 9,10-dihydro-10- [2,3-di (hydroxycarbonyl)propyl]-10-phosphaphenanthrene-10-oxide (DDP), usually have the characteristics of low toxicity, less smoke, environmental benignity and highly
Syntheses and flame retarding properties of DOPO polymers, melamine
PP/SEBS alloys containing DOPO-melamine copolymers display comparable thermal resistance and flame retarding behavior (T d = 290°C; char yield: 15.6%, LOI: 23, and flammability: UL-94 V0) as the alloys containing common commercial flame retardants (i.e., DOPO, melamine, and ammonium polyphosphate).
Synthesis of a novel flame retardant based on DOPO derivatives and its
An intumescent flame retardant (DOPO-DAM) containing phosphorus and nitrogen was synthesized via a two-step process and then, it was incorporated into waterborne polyurethane to serve as a reactive flame retardant for preparing flame-retarded WPU (FR-WPU). The chemical structures of DOPO-DAM and FR-WPU were confirm
DOPO/Silicon/CNT Nanohybrid Flame Retardants: Toward Improving the Fire
Novel DOPO/silicon/CNT nanohybrid flame retardants (FR-CNTs) were synthesized and FR-CNTs were introduced into epoxy resins through thermal curing process. The SEM and TEM results indicate that CNTs distribute uniformly in epoxy resins due to the good dispersion of CNTs in DOPO/silicon/CNT nanohybrid flame retardants. The thermal stability and flame-retardant properties of EP/FR-CNTs
Preparation and Characterization of DOPO
These experimental results indicated that MWCNT-ODOPB was a compatible and efficient flame retardant for epoxy resins. Moreover, cone calorimeter analysis showed that the peak heat release rate...
- Are Dopo derivatives flame retardants?
- Despite a growing interest in DOPO derivatives as flame retardants there exist no comprehensive review, which summarizes in detail their synthesis and application in epoxy systems since 2011 (last decade) [, , , , , ].
- Why is Dopo a flame retardant?
- Thus 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) has become one of the most important flame retardants in this field, now used in several modifications as a reactive or additive compound , , , , , , , . DOPO shows excellent flame-retarding properties in epoxy-based materials.
- 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 a non-reactive Dopo based flame retardant?
- Non-reactive DOPO-based flame retardants have been widely used in aviation where a relatively lower loading is required to achieve improved fire behavior and allow a good compromise between flame retardancy and mechanical performances in epoxy systems , , , .
- Which flame retardant additive is better HPCP or Hap-Dopo?
- DOPO-based flame retardant additive (HAP-DOPO) showed higher flame retardant efficiency compared to HPCP. HPCP system could only achieve a V2 classification, however, when DOPO was used as a reactive co-additive in the HPCP system a V0 classification could be achieved.
- Is Ti-Poss-bisdopo a flame retardant?
- As Ti-POSS-bisDOPO contains a non-polar POSS unit and a polar DOPO segment it can behave like an amphiphilic surfactant. Therefore, SEM analysis of epoxy samples containing Ti-POSS-bisDOPO (EP/Ti-POSS-bisDOPO) revealed that the flame retardant could achieve very good dispersion in the matrix with a particle size varying from 150 nm to 1.5 μm.
