Flame Retardant Effects of Fabrics Finished by Hybrid Nano-Micro Silica-based Sols

Fan, Dandan; You, Fei; Zhang, Yi; Huang, Zonghao

doi:10.1016/j.proeng.2017.12.124

Cited by 15 publications

(8 citation statements)

References 4 publications

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“…Boric acid can be used as an acid source to promote the formation of char layer, produce synergistic effect with silica sol, and reduce the amount of smoke produced by cotton fabric (the maximum pyrolysis temperature of the sample SiO 2 -KH560-ZB@Cotton in Table 3 is advanced, and the char residue increases). In general, the flame retardant effects of cotton fabrics finished by sol-gel gel coating are primarily contributed by the following aspects: SiO 2 sol builds special folding three-dimensional space carrier and provides a framework shielding layer; KH560 and ZB reduce the burning surface temperature, strengthening the stability of the shielding and isolation effect, accelerate the termination of the chain reaction through physical covering and chemical coupling [38–40]. The indispensable individual advantages and obvious synergistic effect are shown especially by the ΔLOI/Δm index.…”

Section: Resultsmentioning

confidence: 99%

“…In general, the flame retardant effects of cotton fabrics finished by sol-gel gel coating are primarily contributed by the following aspects: SiO 2 sol builds special folding three-dimensional space carrier and provides a framework shielding layer; KH560 and ZB reduce the burning surface temperature, strengthening the stability of the shielding and isolation effect, accelerate the termination of the chain reaction through physical covering and chemical coupling [38][39][40]. The indispensable individual advantages and obvious synergistic effect are shown especially by the DLOI/Dm index.…”

Section: Explorations Of Flame-retardant Mechanisms Of Silica-based S...mentioning

confidence: 99%

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Synergistically improved flame retardancy of the cotton fabric finished by silica-coupling agent-zinc borate hybrid sol

Wang

Zhu

et al. 2021

Journal of Industrial Textiles

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The sol-gel process has been applied to cotton fabrics to cover the fibers with a silica-based film, which can improve their thermal oxidation and combustion behaviors. Silica sol, silane coupling agent 3-glycidoxypropyltrimethoxysilane (KH560) and flame retardant zinc borate (ZB) are used together to prepare SiO2-KH560-ZB hybrid sol, which is then finished on the surface of cotton fabric through impregnation and baking. Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), limiting oxygen index analysis (LOI) and microscale combustion calorimetry (MCC) are used to characterize functional groups, thermal stability and flammability properties of finished fabrics. Surface morphology of sol modified cotton fabrics are analyzed by scanning electron microscopy (SEM) and energy dispersive X-Ray spectroscopy (EDX). Results show the sols are successfully converted into gel coatings onto cotton fabrics, and continuous smoldering phenomenon of resulted fabrics disappears. ΔLOI/Δm of SiO2-KH560-ZB coated cotton fabric reaches the highest of 0.37%/g, char residue rate is as high as 28.43% and the peak heat release rate (PHRR) is reduced by 26.9% (83.7 W/g). KH560 has a significant coupling effect on combining components in the sol system and increases compatibility between sols and cotton fabrics. ZB (cooling, separation, dilution and suppression), silica sol (physical barrier) and KH560 show excellent synergistic effects in enhancing overall flame retardancy.

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Section: Resultsmentioning

confidence: 99%

Section: Explorations Of Flame-retardant Mechanisms Of Silica-based S...mentioning

confidence: 99%

Synergistically improved flame retardancy of the cotton fabric finished by silica-coupling agent-zinc borate hybrid sol

Wang

Zhu

et al. 2021

Journal of Industrial Textiles

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“…The deformation of bands that appeared at various places like 910 cm -1 and 1015 cm -1 can be attributed to the deformation of C-H and C-N (stretching Juniper Online Journal Material Science vibrations). The weak band was observed at 3342 cm -1 and 1914 cm -1 reflected the asymmetrical stretching of O-H and C-H [43]. It has been observed that the intensity of OH in the case of GO-Ag NPs with garlic is more than without, it can be owing to garlic extract components.…”

Section: Atr-ft-ir Analysismentioning

confidence: 94%

Enhanced Antiangiogenic Activity of Silver Nano-Particles Grafted on Graphene Oxide

Imran

2022

JOJMS

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In the study, the silver nanoparticle were grafted on graphene oxide with and without use of Allium sativum as stabilizing or reducing agent and ultrasonic assistant have been successfully prepared and then their comparative anti-angiogenesis and hemolytic studies have been carried out. The synthesized particles have been characterized by using modern techniques including P-XRD, AT-FTIR, UV-Visible spectroscopy, SEM analysis, and BT-90 Nano size analyzer (BT-90). The results revealed uniform distribution of Ag on the GO sheet in both cases with mean particle size of 32.96 nm with d-spacing 2.3634 nm and 11.65 nm with d-spacing 2.3594 nm for GO-Ag-G NPs and GO-Ag NPs, respectively. The maximum absorbance was obtained at 448.08 nm of GO-Ag-G NPs and 443.29 of GO-Ag NPs. Both types of NPs showed dose-dependent anti-angiogenesis activity analyzed via CAM assay and showed % hemolysis of range (0.0971-.1246) for GO-Ag-G NPs and (0.14-0.5797) for GO-Ag NPs.

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“…El-Shafei et al [13] modified the fabric with nano TiO 2 sol gel from titanium isopropoxide and the fire resistance of the TiO 2 modified fabric is significantly improved (LOI increased from 17.4% to 23%). Fei et al [14] modified fabric with nano silica synthesized from TEOS and the significant enhance of flame retardancy (LOI value from 19.0 to 23.0) is reported. Liu et al [15] reported that fabric coated with silica nano by using the sources of organic silicon TEOS and trimethylsilane and showed that the thermal stability was considerably improved.…”

Section: Introduction *mentioning

confidence: 99%

High Flame Retardant Performance of SiO2-TiO2 Sol Coated on Polyester/Cotton Fabrics

Trang

Giang

Manh

et al. 2021

NST

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SiO2 and TiO2 sols were successfully synthesized by using sodium silicate and titanium chloride as Si and Ti sources. SiO2-TiO2 sol coated polyester/cotton fabric was fabricated by deep-coating method and using SiO2, TiO2 sols as coating materials. SiO2-TiO2 coated fabric were characterized by XRD, FTIR, TGA, SEM and EDX. From SEM image, it showed the SiO2, TiO2 particles of 20-30 nm which well deposited on fabric surface. TGA result revealed the significant improvement of thermal resistance and stability of SiO2-TiO2 coated fabric as compared to those of uncoated fabric. Flame retardant performance of SiO2-TiO2 coated fabrics was much better than that of uncoated fabric. Thus, SiO2-TiO2 coated fabric SiO2-TiO2 content of 26wt% showed the UL-94 classification of V-0 and LOI value of 30.3 were obtained. Moreover, mechanical property (tear strength) of SiO2-TiO2 coated fabrics were also improved.

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Flame Retardant Effects of Fabrics Finished by Hybrid Nano-Micro Silica-based Sols

Cited by 15 publications

References 4 publications

Synergistically improved flame retardancy of the cotton fabric finished by silica-coupling agent-zinc borate hybrid sol

Synergistically improved flame retardancy of the cotton fabric finished by silica-coupling agent-zinc borate hybrid sol

Enhanced Antiangiogenic Activity of Silver Nano-Particles Grafted on Graphene Oxide

High Flame Retardant Performance of SiO2-TiO2 Sol Coated on Polyester/Cotton Fabrics

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