Synergistic flame retardant effect between nano-silicon dioxide and layered double hydroxides in ethylene vinyl acetate composites

Qian, Yi; Zhou, Shaojie; Chen, Xilei

doi:10.1177/0892705717738287

Cited by 9 publications

(7 citation statements)

References 41 publications

(60 reference statements)

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“…In this study, the untreated CF and CF treated with EVA (CF/EVA) showed similar LOI values of 18.8% and 19% respectively indicating that the CF and CF/EVA ignited easily in air. It was reported that the LOI value of EVA was 19.2% [17]. It can be seen that the LOI values of treated CF/EVA increased rapidly by the addition of SiO 2 and/or Al 2 O 3 from 19 to 29.3% and suggesting a synergistic effect and developing the flame resistance properties which is helpful to the LOI test.…”

Section: Flame Retardant Application Of Treated Cfmentioning

confidence: 83%

“…Silicon dioxide is one of the reinforced filling materials that are widely utilized as an improving agent in thermoplastic polymers that improves the mechanical properties [16] and has synergistic flame retardant property [17,18]. SiO 2 is known as a potential and safe flame retardant additive for polymer systems due to its high heat resistance, inert and non-toxic features [19].…”

Section: Introductionmentioning

confidence: 99%

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Development of Cotton Fabrics via EVA/SiO2/Al2O3 Nanocomposite Prepared by γ-Irradiation for Waterproof and Fire Retardant Applications

Elbarbary

Elhady

Gad

2022

J Inorg Organomet Polym

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Development of cotton fabric (CF) properties using nanocomposites via coating method was of considerable interest for wide applications. This article aims at developing CF properties by coating treatment using ethylene–vinyl-acetate (EVA), silicon dioxide (SiO2), aluminum oxide (Al2O3) nanoparticles and γ-irradiation widely used in waterproof and flame retardant applications. EVA-based nanocomposites, EVA/SiO2, EVA/Al2O3, and EVA/SiO2/Al2O3, were synthesized by γ-irradiation and the highest gel content of 81.2–95.3% was achieved at 30 kGy. The physicochemical properties of EVA-based nanocomposites were characterized by FT-IR, XRD, DSC and SEM techniques. Usage of irradiated EVA and EVA-based nanocomposites for treatment of CF by coating technique was successfully achieved. This technique provides a simple and versatile method leading to excellent uniform and smooth surface morphology without aggregation. The weight gain, mechanical properties, thermal properties, water vapor permeability and flame-retardant properties of the modified CF were evaluated. Moreover, compared with control CF, the resistivity of water absorptivity and hydrophobic property and the thermal stability were gained. The flame retardant properties of CF samples were performed using limited oxygen index (LOI) and vertical burning flame tests. LOI percentages of CF/EVA/SiO2, CF/EVA/Al2O3 and CF/EVA/SiO2/Al2O3 increased to 25.3, 27.5, and 29.3%, respectively. Untreated CF ignited and burned rapidly after 5 s. Meanwhile, the treated CF hold flame resistance properties and the burning time prolonged to 25 s. The results of the treated CF providing revealed hydrophobic and protective capability of the fabrics from being destroyed by burning, and support their further use in waterproof and flame retardant applications of fabrics.

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Section: Flame Retardant Application Of Treated Cfmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Development of Cotton Fabrics via EVA/SiO2/Al2O3 Nanocomposite Prepared by γ-Irradiation for Waterproof and Fire Retardant Applications

Elbarbary

Elhady

Gad

2022

J Inorg Organomet Polym

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“…Flame retardants of inorganic nature such as nanosilica, nano alumino-silica, nano clay are often used to cover the fabric surface to create an insulating and fireproof protective layer and simultaneously, the physico-mechanical properties can be improved. Among inorganic flame retardants, nano silica and nano titanium dioxide have received a great interest because these materials are environmentally friendly, non-toxic and highly effective in slowing or resisting fire [9][10][11][12]. 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%).…”

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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“…20,21 Ethylene vinyl acetate (EVA) copolymer, as elastomer material, has many advantages in high impact resistance, water resistance, and processability. 9,22 EVA can be used as the compatibilizer, which can enhance the interface adhesion between inorganic particles and polymer matrix. In this work, a novel method of organic modification of EG is proposed by using grafting process containing phosphorous and synergistic effect with ZB applying to the HDPE/EVA composites filled with MH/ATH.…”

Section: Introductionmentioning

confidence: 99%

The synergistic flame retardancy of modified expandable graphite and metal hydroxides on HDPE/EVA composites

Guo

Liu

et al. 2020

Journal of Thermoplastic Composite Materials

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In this article, the flammable behaviors and synergistic effects of modified expanded graphite (MEG) with zinc borate (ZB) on flame-retardant high-density polyethylene/ethylene vinyl acetate (HDPE/EVA) composites containing magnesium hydroxide (MH) and aluminum hydroxide (ATH) are investigated by the Underwriters Laboratories-94 (UL-94) test, limiting oxygen index (LOI), cone calorimeter test (CCT), thermal gravimetric analysis (TGA), Fourier transform infrared (FTIR), differential scanning calorimetry, and tensile tests. The LOI, UL-94, and CCT results show that the synergistic effect of MEG and ZB can improve the flame retardancy of the composites. With the addition of ZB and MEG, the LOI value increases, and the UL-94 reaches the V-0 rating. The heat release rate and total heat release decrease, respectively. The data obtained from the TGA indicate that the synergistic effects of ZB with MEG increase the decomposition temperature when 2 phr ZB and 8 phr MEG are added into the composites. The data from FTIR show that HMEG8 and HMEG10 composites produce phosphate at high temperatures, which promotes the formation of stable and compact charred layer. All the results show that ZB and MEG have positive synergistic effects on HDPE/EVA composites containing MH and ATH. However, ZB and MEG play a negative role in the tensile properties of the HDPE/EVA composites.

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Synergistic flame retardant effect between nano-silicon dioxide and layered double hydroxides in ethylene vinyl acetate composites

Cited by 9 publications

References 41 publications

Development of Cotton Fabrics via EVA/SiO2/Al2O3 Nanocomposite Prepared by γ-Irradiation for Waterproof and Fire Retardant Applications

Development of Cotton Fabrics via EVA/SiO2/Al2O3 Nanocomposite Prepared by γ-Irradiation for Waterproof and Fire Retardant Applications

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

The synergistic flame retardancy of modified expandable graphite and metal hydroxides on HDPE/EVA composites

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