Flame retardancy and thermal degradation mechanism of epoxy resin composites based on a DOPO substituted organophosphorus oligomer

Wang, Xin; Hu, Yuan; Song, Lei; Xing, Weiyi; Lu, Hongdian; Lv, Pin; Jie, Ganxin

doi:10.1016/j.polymer.2010.03.053

Cited by 493 publications

(329 citation statements)

References 31 publications

Supporting

Mentioning

321

Contrasting

Unclassified

Order By: Relevance

“…As shown in Figure 7, the gaseous products of PLA at maximum decomposition rate include characteristic bands of [17][18][19] And the main gaseous products for PLA/15% PCPP at the maximum decomposition rate are similar to that of PLA. Moreover, new absorption bands at 1260 cm 21 (P@O) and 1121 cm 21 (APAOAPAO) indicate that the polyphosphate structures are formed by decomposition of PCPP. 20,21 The absorbance of pyrolysis products for PLA and PLA/15% PCPP versus temperature is revealed in Figure 8.…”

Section: Determination Of the Degradation Mechanism Using Criado Methodsmentioning

confidence: 99%

“…Moreover, new absorption bands at 1260 cm 21 (P@O) and 1121 cm 21 (APAOAPAO) indicate that the polyphosphate structures are formed by decomposition of PCPP. 20,21 The absorbance of pyrolysis products for PLA and PLA/15% PCPP versus temperature is revealed in Figure 8. PLA begins to release pyrolysis products at about 350 C, while PLA/15% PCPP begins to release pyrolysis products at about 300 C, which is earlier than pure PLA.…”

Section: Determination Of the Degradation Mechanism Using Criado Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Thermal degradation behavior and gas phase flame‐retardant mechanism of polylactide/PCPP blends

Lin

Han

Dong

2014

J of Applied Polymer Sci

View full text Add to dashboard Cite

The thermal degradation behavior of the blend based on polylactide (PLA) and poly(1,2-propanediol 2-carboxyethyl phenyl phosphinate) (PCPP) was investigated by the thermogravimetric analysis (TGA). Thermal degradation activation energies (E a ) of neat PLA and PLA/15% PCPP blend were calculated via the Flynn-Wall-Ozawa method. The E a of the blends increased with the addition of PCPP increasing when the conversion was higher than 10%. In addition, the appropriate conversion models for the thermal degradation process of PLA and PLA/15% PCPP were studied via the Criado method. At the same time, the main gaseous decomposition products of PLA and its blend were identified by TGA/infrared spectrometry (TGA-FTIR) analysis. And it revealed that the PCPP improved the flame-retardant property of PLA via altering the release of the flammable gas and nonflammable gas. Moreover, the PCPP improved the flame-retardant property of PLA by inhibiting exothermic oxidation reactions in the combustion, which was further proved by pyrolysis-gas chromatography-mass spectrometry analysis.

show abstract

Section: Determination Of the Degradation Mechanism Using Criado Methodsmentioning

confidence: 99%

Section: Determination Of the Degradation Mechanism Using Criado Methodsmentioning

confidence: 99%

Thermal degradation behavior and gas phase flame‐retardant mechanism of polylactide/PCPP blends

Lin

Han

Dong

2014

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Besides, the value of T 5% for thermoset decreases following the increase of DAP content. To explain this phenomenon, it should be noted that the O@PAO bond in DAP moiety is less stable than the common CAC bond, 29,30 and moreover, the introduction of DAP decreases the crosslinking density of epoxy thermoset as discussed above. These two factors possibly account for a lower value of T 5% for thermoset modified with DAP.…”

Section: Thermal Stabilities Of Dap Ap and Epoxy Thermosetsmentioning

confidence: 99%

Flame‐retardant properties and mechanisms of epoxy thermosets modified with two phosphorus‐containing phenolic amines

Wang

et al. 2016

J of Applied Polymer Sci

View full text Add to dashboard Cite

Two phosphorus-containing phenolic amines, a 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO)-based derivative (DAP) by covalently bonding DOPO and imine (SB) obtained from the condensation of p-phenylenediamine with salicylaldehyde, and its analog (AP) via the addition reaction between diethyl phosphite and SB, were used to prepare flame-retardant epoxy resins. The burning behaviors and dynamic mechanical properties of epoxy thermosets were studied by limited oxygen index (LOI) measurement, UL-94 test, and dynamic mechanical analysis. The flame-retardant mechanisms of modified thermosets were investigated by thermogravimetric analysis, Py-GC/MS, Fourier transform infrared, SEM, elemental analysis, and laser Raman spectroscopy. The results revealed that epoxy thermoset modified with DAP displayed the blowing-out effect during UL-94 test. With the incorporation of 10 wt % DAP, the modified thermoset showed an LOI value of 36.1% and V-0 rating in UL-94 test. The flame-retardant mechanism was ascribed to the quenching and diluting effect in the gas phase and the formation of phosphorus-rich char layers in the condensed phase. However, the thermoset modified with 10 wt % AP only showed an LOI value of 25.7% and no rating in UL-94 test, which was possibly ascribed to the mismatching of charring process with gas emission process during combustion. V C 2016Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43953.

show abstract

“…The new peaks at 1250 and 1023 cm À1 respectively correspond to P]O and P-N stretching vibration. 27,[32][33][34] The appearance of P]O and P-N absorption bands in combination with the reduction of N-H absorption band show that the Cl atom in DPP-Cl is replaced by N atom of POSS in nucleophilic-substitution reaction with the elimination of HCl. Based on the 1 H-NMR, 31 P-NMR, and FTIR analysis results, it can be concluded that F-POSS has been successfully synthesized.…”

Section: (A)mentioning

confidence: 99%

Simultaneous enhancements in the mechanical, thermal stability, and flame retardant properties of poly(1,4-butylene terephthalate) nanocomposites with a novel phosphorus–nitrogen-containing polyhedral oligomeric silsesquioxane

Zhu

Wang

et al. 2017

RSC Adv.

View full text Add to dashboard Cite

show abstract

Flame retardancy and thermal degradation mechanism of epoxy resin composites based on a DOPO substituted organophosphorus oligomer

Cited by 493 publications

References 31 publications

Thermal degradation behavior and gas phase flame‐retardant mechanism of polylactide/PCPP blends

Thermal degradation behavior and gas phase flame‐retardant mechanism of polylactide/PCPP blends

Flame‐retardant properties and mechanisms of epoxy thermosets modified with two phosphorus‐containing phenolic amines

Simultaneous enhancements in the mechanical, thermal stability, and flame retardant properties of poly(1,4-butylene terephthalate) nanocomposites with a novel phosphorus–nitrogen-containing polyhedral oligomeric silsesquioxane

Contact Info

Product

Resources

About