Synthesis and performance of cyclic phosphorus-containing flame retardants

Hoang, DongQuy; Kim, Jinhwan; Jang, Bok Nam

doi:10.1016/j.polymdegradstab.2008.02.017

Cited by 96 publications

(65 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, if the yield of experimental residue is different from that of the calculated one, it probably means that there is some interaction between Zn(acac) 2 and ABS. It can be seen that Zn(acac) 2 decomposed at a lower temperature than that of pure ABS, and the T 5wt% for Zn(acac) 2 and ABS was 255 C and 383 C, respectively ( Fig. 1a and Table 2).…”

Section: Thermal Decomposition Processmentioning

confidence: 97%

“…In this work, all the raw materials, including ABS, PB, PS, SAN and Zn(acac) 2 were dried under vacuum before use. A Brabender mixer was used for the preparation of ABS composites at 200 C and for the preparation of PS and SAN composites at 240 C and PB composites at 160 C for 8 min at 50 r/min.…”

Section: Samples Preparationmentioning

confidence: 99%

“…As it has already been excluded the possibility of the interaction between the decomposition of Zn(acac) 2 and PS, a model copolymer of SAN was used to study whether or not the incorporation of Zn(acac) 2 had some interaction with the acrylonitrile units. TGA curves of SAN-0 and SAN-5 in Fig.…”

Section: Zn(acac) 2 /San Systemmentioning

confidence: 99%

See 2 more Smart Citations

Mechanism study on char formation of zinc acetylacetonate on ABS resin

Pang

2015

Chin J Polym Sci

View full text Add to dashboard Cite

The mechanism of char formation effect of zinc acetylacetonate (Zn(acac) 2 ) on acrylonitrile-butadiene-styrene copolymer (ABS) was studied. Thermal gravimetric analysis (TGA) was used to study the mass loss and char yield of ABS composites. In situ temperature-dependent Fourier transform infrared spectroscopy (FTIR) was used to characterize the chemical change during thermal decomposition. Roman spectroscopy and scanning electron microscopy (SEM) were applied to characterize the structure and morphology of the char after combustion. Results showed that the presence of Zn(acac) 2 not only slowed down thermal decomposition of the ABS composites, but also increased the charred residue. A more compact and denser char layer with higher graphitization degree was formed for ABS composites with Zn(acac) 2 . To study the char formation mechanism of Zn(acac) 2 on ABS, thermal decomposition was analyzed for the composites of Zn(acac) 2 with PB, PS and SAN, respectively. Also, the chemical structure change was investigated for Zn(acac) 2 during thermal decomposition. Based on these results, it was deduced that the increase of char yield of ABS composites was probably attributed to the interaction between the units of acrylonitrile in ABS and zinc acetate, produced during the thermal decomposition of Zn(acac) 2 . A proposed mechanism for crosslinking and the subsequent char formation was presented.

show abstract

Section: Thermal Decomposition Processmentioning

confidence: 97%

Section: Samples Preparationmentioning

confidence: 99%

See 1 more Smart Citation

Mechanism study on char formation of zinc acetylacetonate on ABS resin

Pang

2015

Chin J Polym Sci

View full text Add to dashboard Cite

show abstract

“…16 To achieve both high P content and hydro-stability, cyclic phosphate esters have been reported in the literatures. [17][18][19][20] Vothi et al disclosed that a combination of cyclic structures with aromatic had good hydro-stability, high thermal stability, and good char-forming ability. 16 Hoang et al synthesized a aliphatic biscyclic phosphorus flame retardant (PBMP) with high P content (P% ¼ 24.19) and good hydro-stability.…”

Section: Introductionmentioning

confidence: 99%

Effect of a novel phosphorus‐containing compound on the flame retardancy and thermal degradation of intumescent flame retardant polypropylene

Zhang

Lin

et al. 2011

J of Applied Polymer Sci

View full text Add to dashboard Cite

A novel flame retardant, tetra(5,5-dimethyl-1,3-dioxaphosphorinanyl-2-oxy) neopentane (DOPNP), was synthesized successfully, and its structure was characterized by FT-IR, 1 H NMR, and 31 P NMR. The thermogravimetric analysis (TGA) results demonstrate that DOPNP showed a good char-forming ability. Its initial decomposition temperature was 236.4 C based on 1% mass loss, and its char residue was 41.2 wt % at 600 C, and 22.9 wt % at 800 C, respectively. The flame retardancy and thermal degradation behavior of novel intumescent flame-retardant polypropylene (IFR-PP) composites containing DOPNP were investigated using limiting oxygen index (LOI), UL-94 test, TGA, cone calorimeter (CONE) test, and scanning electron microscopy (SEM). The results demonstrate that DOPNP effectively raised LOI value of IFR-PP. When the loading of IFR was 30 wt %, LOI of IFR-PP reached 31.3%, and it passed UL-94 V-0. TGA results show that DOPNP made the thermal decomposition of IFR-PP take place in advance; reduced the thermal decomposition rate and raised the residual char amount. CONE results show that DOPNP could effectively decrease the heat release rate peak of IFR-PP. A continuous and compact char layer observed from the SEM further proved the flame retardance.

show abstract

“…Currently, phosphorus-containing flame retardants are considered as promising halogen-free flame-retardant additives due to their low smoke, low toxicity and low corrosion [9][10][11]. However, their poor compatibility with resins is still a biggest obstacle to their development [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Phosphorus-containing flame-retardant bismaleimide resin with high mechanical properties

Yan

Feng

et al. 2016

Polym. Bull.

View full text Add to dashboard Cite

Novel flame-retardant bismaleimides-based composites (P-DBA/DBE/ BMIs) with excellent mechanical properties and processibility were developed by phenylphosphonic dichloride (PPD), diallyl bisphenol A (DBA), diallyl bisphenol A ether (DBE) and bismaleimide. In this system, PPD acts as a reactive flame retardant, which endows bismaleimide with excellent flame retardancy and thermal stability; DBE can improve the processibility of bismaleimide resin, and rearrange into DBA to react with bismaleimides at high temperature. Compared to the impact and flexural strength of conventional bismaleimide resin modified only by 42.86 wt% DBA, those of P-DBA/DBE/BMIs with 1.00 wt% PPD, 7.14 wt% DBE and 35.72 wt% DBA, respectively, increased 31.92 and 63.36 %. Furthermore, the thermal stability was improved markedly, and the flame-retarding UL-94 rating was increased from V-1 to V-0.

show abstract

Synthesis and performance of cyclic phosphorus-containing flame retardants

Cited by 96 publications

References 30 publications

Mechanism study on char formation of zinc acetylacetonate on ABS resin

Mechanism study on char formation of zinc acetylacetonate on ABS resin

Effect of a novel phosphorus‐containing compound on the flame retardancy and thermal degradation of intumescent flame retardant polypropylene

Phosphorus-containing flame-retardant bismaleimide resin with high mechanical properties

Contact Info

Product

Resources

About