Flame retardation of glass-fibre-reinforced polyamide 6 by a novel metal salt of alkylphosphinic acid

Hu, Zhi; Chen, Li; Lin, Gong-Peng; Luo, Youfu; Wang, Yu‐Zhong

doi:10.1016/j.polymdegradstab.2011.03.010

Cited by 61 publications

(27 citation statements)

References 24 publications

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“…Within the new non-halogenated FRs, researchers have proposed different types including red phosphorus [5], magnesium hydroxide [6,7], boron [8], organoclay nanocomposites [9,10], glass-fiber [11,12], silicon [13], multiwall carbon nanotubes composites [14][15][16], carbon fiber [17], and melamine-based products [18][19][20] in various combinations. Phosphorus-based FRs are among the most efficient and versatile flame retardants, and most of them can act through a combination of vapor-(inhibition of active species in gas phase) and condensed-phase reactions (promotion of the polymer carbonization and char formation) [21,22].…”

Section: Introductionmentioning

confidence: 99%

Effect of Meltable Triazine-DOPO Additive on Rheological, Mechanical, and Flammability Properties of PA6

et al. 2015

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Through a straightforward approach, a new meltable, halogen-free, nitrogen-phosphorus-based flame retardant (FR), 6-(2-(4,6-diamino-1,3,5-triazin-2-yl)ethyl) dibenzo [c,e][1,2]oxaphosphinine 6-oxide (DTE-DOPO) was synthesized and incorporated in polyamide 6 (PA6).It was proved that a very low phosphorus content of 1.46 wt % for DTE-DOPO additive improved the flame retardancy of PA6, leading to a non-flammable material. The performance of the new additive was compared to that of the commercially-available Exolit OP 1230. The PA6 formulations were evaluated by measuring the rheological, mechanical, and flammability behavior. Using compounding by melt extrusion, 17 wt % additives was introduced into PA6 matrix and the corresponding formulations were characterized. The results evidenced a higher homogeneity of DTE-DOPO with PA6, a high thermal stability with a catalyzing decomposition effect on PA6 caused by the presence of the new developed FR, enhanced elasticity for the PA6/DTE-DOPO formulation and a V0 rating for both formulations. Thermal and fire analysis indicated a primary gas-phase activity, combined with a complete suppression of the self-sustained burning for the PA6/DTE-DOPO formulation.Polymers 2015, 7 1542

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Section: Introductionmentioning

confidence: 99%

Effect of Meltable Triazine-DOPO Additive on Rheological, Mechanical, and Flammability Properties of PA6

et al. 2015

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“…For PA6 combined with modified layered silicates like organo-modified montmorillonite (OMMT), the results showed an increase for the LOI of 21.0% for PA6/ OMMT6% samples to 36.0% for PA6/OMMT2%/ABPA10% [110]. As for PA6/GF composites, the synergy between ABPA and monoisobutylphosphinic acid was demonstrated by the reduced pHRR (288 kW/m 2 ), increased LOI value (34.0%) and V-0 classification in the UL-94 test [111].…”

Section: Other Hybrid Structures For Flame Retardantsmentioning

confidence: 95%

Halogen-free flame retardants for application in thermoplastics based on condensation polymers

et al. 2019

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Future materials in the field of thermoplastics require a lower impact on the environment. Actual thermoplastic materials also require "greener" additives for thermal and fire resistance profile. In this work, some of the recent solutions for halogen-free flame retardants were discussed in the context of viable routes with economical and industrial relevance. The fire retardant mechanism was discussed in order to imagine new solutions for future additives. Some of the main (inorganic, organic or hybrid) flame retardants can be used as common platform for the next classes of thermoplastic composites (synthetic, natural, or bio-based). The new generation of flame retardants (based on the emerging solutions) will have to surpass two major barriers: the cost effectiveness and the need for high concentration (which usually affects other properties).

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“…Braun et al [10,11] investigated that glass-fiber-reinforced polybutylene terephthalate (PBT) with a 13-20 wt % loading range of aluminum diethylphosphinate fulfilled the flame-retardant requirements (a UL94 V-0 rating and a limiting oxygen index (LOI) value of >42%). Hu et al [12] used the mixtures of aluminum salts of both diisobutylphosphinic acid and monoisobutylphosphinic acid (HPA-2TBA-Al) as flame retardants for glass-fibre-reinforced polyamide 6 (GFPA6). The GFPA6/25% HPA-2TBA-Al composite achieved a V-0 rating in the UL 94 test and had an increased LOI value of 34.0%.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on the Flame-Retardant Properties and Mechanical Properties of PA66 with Different Dicyclohexyl Hypophosphite Acid Metal Salts

Zhang

Yang

et al. 2019

Polymers

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Three metal salts of dicyclohexyl hypophosphite, namely dicyclohexyl aluminum hypophosphite (ADCP), dicyclohexyl magnesium hypophosphite (MDCP), and dicyclohexyl zinc hypophosphite (ZDCP), were synthesized. These flame retardants were subjected to thermogravimetric analysis, and the results showed that ADCP and ZDCP had higher thermal stabilities than MDCP. They were then separately mixed with polyamide 66 (PA66)to prepare composite materials, of which the combustion properties were determined by the limiting oxygen index method and horizontal/vertical burning experiments. The mechanical properties of the materials were further evaluated using an electronic universal testing machine. The results showed that all the three flame retardants exerted a flame-retardant effect on PA66, but the flame-retardant effect of MDCP was inferior to those of ADCP and ZDCP. All the composites also showed similar mechanical properties. Among the three flame retardants, ADCP had the best overall performance for raw materials, showing good flame-retardant properties while maintaining the mechanical properties of the raw materials. The optimal dosage of ADCP was 15 wt %, at which a V-0 rating in the vertical burning test (UL 94 test) can be obtained.

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Flame retardation of glass-fibre-reinforced polyamide 6 by a novel metal salt of alkylphosphinic acid

Cited by 61 publications

References 24 publications

Effect of Meltable Triazine-DOPO Additive on Rheological, Mechanical, and Flammability Properties of PA6

Effect of Meltable Triazine-DOPO Additive on Rheological, Mechanical, and Flammability Properties of PA6

Halogen-free flame retardants for application in thermoplastics based on condensation polymers

Comparative Study on the Flame-Retardant Properties and Mechanical Properties of PA66 with Different Dicyclohexyl Hypophosphite Acid Metal Salts

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