Research on nano-Sb<sub>2</sub>O<sub>3</sub>flame retardant in char formation of PBT

Niu, Lei; Xu, Jianlin; Zhao, Jinqiang; Su, Jiaqiang; Guo, Ya-Fang; Zhang, Tingan

doi:10.1080/00150193.2018.1391532

Cited by 19 publications

(8 citation statements)

References 18 publications

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“…In all samples, at about 397 K a small weight loss of 3% was noticed, which is due to the removal of adsorbed water vapors . Further, a major second step weight loss was observed at 738–883 K, which is attributed to the vaporization of Te and melting of Sb 2 Te 3 − in all prepared samples. In both cases, after neglecting the water loss, TGA curves can be attributed as a single-stage decomposition.…”

Section: Resultsmentioning

confidence: 77%

Effect of (Sm, In) Doping on the Electrical and Thermal Properties of Sb₂Te₃ Microstructures

et al. 2023

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Doped Sb2Te3 narrow-band-gap semiconductors have been attracting considerable attention for different electronic and thermoelectric applications. Trivalent samarium (Sm)- and indium (In)-doped Sb2Te3 microstructures have been synthesized by the economical solvothermal method. Powder X-ray diffraction (PXRD) was used to verify the synthesis of single-phase doped and undoped Sb2Te3 and doping of Sm and In within the crystal lattice of Sb2Te3. Further, the morphology, structure elucidation, and stability have been investigated systematically by scanning electron microscopy (SEM), Raman analysis, and thermogravimetric analysis (TGA). These analyses verified the successful synthesis of hexagonal undoped Sb2Te3 (AT) and (Sm, In)-doped Sb2Te3 (SAT, IAT) microstructures. Moreover, the comparison of dielectric parameters, including dielectric constant, dielectric loss, and tan loss of AT, SAT, and IAT, was done in detail. An increment in the electrical conductivities, both AC and DC, from 1.92 × 10–4 to 4.9 × 10–3 Ω–1 m–1 and a decrease in thermal conductivity (0.68–0.60 W m–1 K–1) were observed due to the doping by trivalent (Sm, In) dopants. According to our best knowledge, the synthesis and dielectric properties of (Sm, In)-doped and undoped Sb2Te3 in comparison with their electrical properties and thermal conductivity have not been reported earlier. This implies that appropriate doping with (Sm, In) in Sb2Te3 is promising to enhance the electronic and thermoelectric behavior.

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Section: Resultsmentioning

confidence: 77%

Effect of (Sm, In) Doping on the Electrical and Thermal Properties of Sb₂Te₃ Microstructures

et al. 2023

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“…Upon decreasing the particle size from micrometers to nanometers, the effect of Sb2O3 on the properties of the matrix material can be enhanced, even under the same conditions. As a notable example, a nanoparticulate Sb2O3 flame retardant was obtained by high-energy ball milling and applied to poly(butylene terephthalate) (PBT) to prepare a nano-Sb2O3/PBT composite [247]. Analyses indicated that nano-Sb2O3 promoted the catalytic char formation of PBT.…”

Section: Modified Sb2o3 Nanoparticlesmentioning

confidence: 99%

“…The results indicated that the nano-Sb2O3 flame retardant cross-linked and catalyzed PBT, promoting degradation and char formation and increasing residual carbon. Optical and SEM images of pristine PBT and composite samples carbonized with different flame retardant additive contents at 600 °C are shown in Figure 37 [247]. The char layer of the carbon residue for pristine PBT after carbonization was thin and loose, with more holes and ruptured and collapsed cells (Figure 37a).…”

Section: Modified Sb2o3 Nanoparticlesmentioning

confidence: 99%

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Fire-Safe Polymer Composites: Flame-Retardant Effect of Nanofillers

Kim¹,

Lee

Yoon

2021

Polymers

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Currently, polymers are competing with metals and ceramics to realize various material characteristics, including mechanical and electrical properties. However, most polymers consist of organic matter, making them vulnerable to flames and high-temperature conditions. In addition, the combustion of polymers consisting of different types of organic matter results in various gaseous hazards. Therefore, to minimize the fire damage, there has been a significant demand for developing polymers that are fire resistant or flame retardant. From this viewpoint, it is crucial to design and synthesize thermally stable polymers that are less likely to decompose into combustible gaseous species under high-temperature conditions. Flame retardants can also be introduced to further reinforce the fire performance of polymers. In this review, the combustion process of organic matter, types of flame retardants, and common flammability testing methods are reviewed. Furthermore, the latest research trends in the use of versatile nanofillers to enhance the fire performance of polymeric materials are discussed with an emphasis on their underlying action, advantages, and disadvantages.

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“…However, PBT resins are extremely flammable with a limiting oxygen index (LOI) of 20-22%, generating large amounts of heat during combustion accompanied by severe melt dripping. This makes them extremely dangerous for fire safety in applications (Zhu et al, 2017;Niu et al, 2018). Among the glass fiber reinforced PBT composites, long glass fiber reinforced PBT composites can achieve higher strength, modulus, dimensional stability, and thermal stability than short glass fiber reinforced PBT composites (Cai et al, 2015;Suzanne et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Flame-retardant properties and mechanism of LGF/PBT/DOPO-HQ-conjugated flame-retardant composites

Sun

Zhang²,

Shang³

et al. 2022

Front. Chem.

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In this article, long fiber reinforced polybutylene terephthalate (LGF/PBT/DOPO-HQ) flame-retardant composites were prepared using 10-(2,5-dihydroxy phenyl)-10H-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO-HQ) as the conjugated flame-retardant. The effects of different flame-retardant contents on the combustion properties of the composites were investigated. The results showed that after adding 14% of DOPO-HQ, the flame-retardant effect of the composite reached the V-0 level of UL-94 fire rating with an ultimate oxygen index (LOI) of 26.4%. The average heat release rate (Av-HRR), peak heat release rate (PHRR), and total heat release rate (THR) decreased by 45.9, 56.5, and 32.6%, respectively. This shows that LGF/PBT/DOPO-HQ composite has good flame-retardant properties. Meanwhile, the flame-retardant mechanism of cohesive phase and gas-phase synergy during the combustion of flame retardants was analyzed by carbon layer morphology and dynamic thermal decomposition.

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Research on nano-Sb₂O₃flame retardant in char formation of PBT

Cited by 19 publications

References 18 publications

Effect of (Sm, In) Doping on the Electrical and Thermal Properties of Sb₂Te₃ Microstructures

Effect of (Sm, In) Doping on the Electrical and Thermal Properties of Sb₂Te₃ Microstructures

Fire-Safe Polymer Composites: Flame-Retardant Effect of Nanofillers

Flame-retardant properties and mechanism of LGF/PBT/DOPO-HQ-conjugated flame-retardant composites

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Research on nano-Sb2O3flame retardant in char formation of PBT

Cited by 19 publications

References 18 publications

Effect of (Sm, In) Doping on the Electrical and Thermal Properties of Sb2Te3 Microstructures

Effect of (Sm, In) Doping on the Electrical and Thermal Properties of Sb2Te3 Microstructures

Fire-Safe Polymer Composites: Flame-Retardant Effect of Nanofillers

Flame-retardant properties and mechanism of LGF/PBT/DOPO-HQ-conjugated flame-retardant composites

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Product

Resources

About

Research on nano-Sb₂O₃flame retardant in char formation of PBT

Effect of (Sm, In) Doping on the Electrical and Thermal Properties of Sb₂Te₃ Microstructures

Effect of (Sm, In) Doping on the Electrical and Thermal Properties of Sb₂Te₃ Microstructures