Preparation of zinc hydroxystannate nanocomposites coated by organophosphorus and investigation of their effect on mechanical properties and flame retardancy of poly(vinyl chloride)

Gao, Tingting; Li, Zhiwei; Yu, Laigui; Zhang, Zhijun

doi:10.1039/c5ra10086k

Cited by 36 publications

(22 citation statements)

References 26 publications

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“…Preparation of PVC nanocomposite containing 5 wt.% ZHS/GO has similar processing condition with the procedure of DOPO-VTS-ZHS/PVC reported in our literature [ 20 ], while DOPO-VTS-ZHS was instead by ZHS/GO in this study. Meantime, for comparison, pristine PVC and PVC nanocomposites with 5 wt.% contents ZHS or GO were also prepared under the same processing conditions.…”

Section: Methodssupporting

confidence: 60%

Preparation of zinc hydroxystannate-decorated graphene oxide nanohybrids and their synergistic reinforcement on reducing fire hazards of flexible poly (vinyl chloride)

Gao

Chen

et al. 2016

Nanoscale Res Lett

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A novel flame retardant, zinc hydroxystannate-decorated graphene oxide (ZHS/GO) nanohybrid, was successfully prepared and well characterized. Herein, the ZHS nanoparticles could not only enhance the flame retardancy of GO with the synergistic flame-retardant effect of ZHS but also prevent the restack of GO to improve the mechanical properties of poly (vinyl chloride) (PVC) matrix. The structure characterization showed ZHS nanoparticles were bonded onto the surface of GO nanosheets and the ZHS nanoparticles were well distributed on the surface of GO. Subsequently, resulting ZHS/GO was introduced into flexible PVC and fire hazards and mechanical properties of PVC nanocomposites were investigated. Compared to neat PVC, thermogravimetric analysis exhibited that the addition of ZHS/GO into PVC matrix led to an improvement of the charring amount and thermal stability of char residue. Moreover, the incorporation of 5 wt.% ZHS/GO imparted excellent flame retardancy to flexible PVC, as shown by increased limiting oxygen index, reduced peak heat release rate, and total heat release tested by an oxygen index meter and a cone calorimeter, respectively. In addition, the addition of ZHS/GO nanohybrids decreased the smoke products and increased the tensile strength of PVC. Above-excellent flame-retardant properties are generally attributed to the synergistic effect of GO and ZHS, containing good dispersion of ZHS/GO in PVC matrix, the physical barrier of GO, and the catalytic char function of ZHS.

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Section: Methodssupporting

confidence: 60%

Preparation of zinc hydroxystannate-decorated graphene oxide nanohybrids and their synergistic reinforcement on reducing fire hazards of flexible poly (vinyl chloride)

Gao

Chen

et al. 2016

Nanoscale Res Lett

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“…The characteristic peaks of ZHS were centered at 3126 and 1172 cm −1 and were assigned to the stretching vibrations of O-H and Sn-O bonds, respectively. In addition, the peak at 768 cm −1 was attributed to the stretching vibrations of [Sn(OH) 6 ] 2− belonging to ZHS [1]. After ZHS was coated with ALP, the spectra of pure ZHS was changed.…”

Section: Characteristicsmentioning

confidence: 99%

“…Halogenated flame retardants are used widely in reducing the fire hazards of polymeric materials. On the other hand, the halogen-containing flame retardants usually cause serious environmental contamination because they can produce poisonous substances during the combustion of halogen-containing composites [1]. Therefore, halogen-free and low smoke fire retardant composites have been applied in polymer matrices because of their desired environmental acceptance.…”

Section: Introductionmentioning

confidence: 99%

“…Aluminum phosphate (AlPO 4 , ALP), which is included in the organic group composite, is effective in improving the dispersion and thermal stability of the inorganic flame retardant in the polymer matrix [1]. Therefore, in this study, ALP was selected as the coating material for ZHS to enhance the compatibility and flame retardancy of ZHS [7].…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Characterization of Zinc Hydroxystannate Coated by Aluminum Phosphate and Its Application in Poly(acrylonitrile-co-vinylidene chloride)

et al. 2020

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In this study, zinc hydroxystannate ([ZnSn(OH)6], ZHS) was coated with aluminum phosphate (AlPO4, ALP) to prepare the ZHS-ALP composite. During the coating process, the reaction conditions, such as the ALP to ZHS molar ratio, were controlled, and the morphology of the products was characterized by scanning electron microscopy (SEM). The prepared composites were introduced into poly(acrylonitrile-co-vinylidene chloride) (PANVDC), and the change in compatibility between ZHS and the polymer matrix was characterized. The results showed that ALP-ZHS (1:1), which was prepared by ALP-ZHS composite molar ratio of 1:1, could improve the dispersion and compatibility of ZHS in the polymer matrix and decrease the hydrophilicity and viscosity. Moreover, the ALP-ZHS composite had a better flame-retardant effect on PANVDC than ZHS alone. PANVDC could pass the V-0 rating in UL94, particularly the highest limiting oxygen index (LOI) value of 33.2% obtained when the ALP-ZHS (1:1) composite was added to PANVDC.

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“…studied the synergistic effect between an organic flame retardant and inorganic flame retardant in a core‐shell structure. Significant improvement in the formation of char residual of poly(vinyl chloride) (PVC) in air was observed and the fire hazard of PVC was reduced . Inspired by the above researches, it was believed that the capsule material could present synergistic effect with α‐ZrP to enhance the flame retardance, as α‐ZrP itself contains the zirconium and phosphorus elements with potential of imparting fire retardant behavior.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect on flame retardancy and thermal behavior of polycarbonate filled with α‐zirconium phosphate@gel‐silica

Lei

et al. 2017

J of Applied Polymer Sci

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A new kind of flame retardant (ZS) with layered a-zirconium phosphate disks (a-ZrP) as the core and inorganic flame retardant (gel-silica, GS) to shield solid acid sites on the surface of a-ZrP as the shell, was synthesized via a facile method. The incorporation effects of ZS with silicone resin on the thermal properties and flame retardance of PC composites were investigated. The presence of ZS could improve the thermal stability of PC matrix. With the addition of ZS contents increased to 3 wt %, the limiting oxygen index (LOI) of the composite was 32.3% and the vertical burning (UL-94) test reached a V-0 rating. However, with more contents of ZS, the LOI value decreased, and without the GS layer, the LOI value was decreased significantly as well. The synergism between the a-ZrP core and gel-silica shell, also with the silicone resin were found. Based on these results, the flame-retardant mechanism was proposed.

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Preparation of zinc hydroxystannate nanocomposites coated by organophosphorus and investigation of their effect on mechanical properties and flame retardancy of poly(vinyl chloride)

Abstract: A novel organic–inorganic nanohybrid flame retardant was prepared. The organic flame retardant could not only surface modify to the inorganic flame retardant but also improve flame retardancy of inorganic flame retardant with the synergistic effect.

Cited by 36 publications

References 26 publications

Preparation of zinc hydroxystannate-decorated graphene oxide nanohybrids and their synergistic reinforcement on reducing fire hazards of flexible poly (vinyl chloride)

Preparation of zinc hydroxystannate-decorated graphene oxide nanohybrids and their synergistic reinforcement on reducing fire hazards of flexible poly (vinyl chloride)

Preparation and Characterization of Zinc Hydroxystannate Coated by Aluminum Phosphate and Its Application in Poly(acrylonitrile-co-vinylidene chloride)

Synergistic effect on flame retardancy and thermal behavior of polycarbonate filled with α‐zirconium phosphate@gel‐silica

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