Preparation and Characterization of DOPO-Functionalized MWCNT
PMID: 32156085 PMCID: PMC7182840 DOI: 10.3390/polym12030613 Abstract compared to neat epoxy resin, which indicates its excellent flame retardant performance. These experimental results indicated that MWCNT-ODOPB was a compatible and efficient flame retardant for epoxy resins.
The non-halogen flame retardant epoxy resin based on a novel
The flame retardant epoxy resins include DOPO–DGEBA and ODOPB–DGEBA are two kinds of typical DOPO series resins which have been widely researched till now. For comparing the flame retardant behaviors of HAP–DOPO, DOPO and ODOPB on themosets, we prepared DOPO–DGEBA/DDS (sample F6) and ODOPB–DGEBA/DDS (sample F7) thermosets containing 1
DOPO/Silicon/CNT Nanohybrid Flame Retardants: Toward
The thermal stability and flame-retardant properties of EP/FR-CNTs composites are improved, which is attributed to the good dispersion of DOPO/silicon/CNT nanohybrid. The cone calorimeter results demonstrate that FR-CNTs can reduce peak heat release and the release of toxic gas effectively compared with EP/CNTs and EP/CNT/FR composites.
Preparation and Characterization of DOPO
As Zhang et al. demonstrated, DOPO-derivatives can effectively introduce flame-retarding properties to epoxy resins in add-ons as low as 2.5 wt.%, increasing LOI and promoting a...
Synthesis of a novel highly effective flame retardant
Lin et al. [25] synthesized a novel flame retardant 2- (6-oxidodibenzooxaphosphinin-6yl)methoxy) (phenoxy)phosphoryl)oxy) ethyl acrylate (DHP), and the UPR/DHP composites fulfilled the UL-94...
- Can Dopo be used as a flame retardant?
- 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. This flame retardant was named CTP-DOPO in agreement with its chemical structure hexa- [4- (phydroxyanilino-phosphaphenanthrene-methyl)-phenoxyl]-cyclotriphosphazene (Fig. 10).
- 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.
- 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 , , , .
- 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.
- 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.
- Does DGEBA/DDS have a flame retardant effect?
- The epoxy composites with DOPO-POSS showed different flame retardant properties depending on the type of hardener. During the UL-94 test it was observed that DGEBA/DDS, containing DOPO-POSS, exhibited a strong blowing-out effect, through vigorous emission of pyrolytic gases.
