Enhanced flame retardancy of latex coating doped with clay nanotubes

Joshi, Anupam; Null, Randall; Graham, S. Scott; Abdullayev, Elshad; Мазуренко, В. В.; Lvov, Yuri

doi:10.1007/s11998-015-9775-z

Cited by 17 publications

(3 citation statements)

References 17 publications

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“…Under inert conditions, 5 BL BPEI/PAA coated (and uncoated) PUFs exhibit little char residue (3.8% and 2.2%, respectively) due to lack of oxygen for formation of combustion products. Neat HNT (insets) shows a single decomposition event at 500 °C, observed in both oxidative and inert atmospheres, which is associated with thermal dehydroxylation (an endothermic event) . The water generated is also believed to help dilute the gas phase in a fire scenario.…”

Section: Resultsmentioning

confidence: 99%

“…The inner lumen has water coordinated within, which after thermal dehydration, is vacated and can be filled with various compounds designed for controlled release . Polymer composites with flame retardant filled HNT exhibit reduced flammability . It is believed that these composites have reduced mass and energy transfer by forming a physical barrier, and dilution of the gas phase via a dehydration mechanism.…”

Section: Introductionmentioning

confidence: 99%

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Environmentally Benign Halloysite Nanotube Multilayer Assembly Significantly Reduces Polyurethane Flammability

Smith

Holder

Ruiz

et al. 2017

Adv Funct Materials

166

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In an effort to develop a more environmentally benign flame retardant for polyurethane foam (PUF), layers of halloysite clay nanotubes (HNT) stabilized by branched polyethylenimine (BPEI) or poly(acrylic acid) (PAA) are deposited from aqueous suspensions to create multilayered nanocomposite coatings. PUF is very flammable and widely used in upholstered furniture throughout the world. Foam treated with five BPEI-HNT/PAA-HNT bilayers, deposited using layer-by-layer assembly, is rendered self-extinguishing in open flame testing. Cone calorimetry reveals that this coating reduces the peak heat release rate (pkHRR) by 62%. Due to the tubular morphology of HNT, small volatile gasses given off during combustion are trapped, so total smoke release (TSR) is reduced by 60%. Infrared spectroscopy suggests this multilayer film survives during combustion, forming an HNT-rich barrier that prevents mass and energy transfer during open flame testing and calorimetry. The significant reductions in pkHRR and TSR, along with the self-extinguishing behavior, indicate that these halloysite-based multilayer films have the potential to greatly improve PUF fire safety. The low cost and natural abundance of HNT makes this technology especially amenable to widespread use.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Environmentally Benign Halloysite Nanotube Multilayer Assembly Significantly Reduces Polyurethane Flammability

Smith

Holder

Ruiz

et al. 2017

Adv Funct Materials

166

View full text Add to dashboard Cite

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“…It is known that the smoke in the fire accident can cause visual obscuration and breathing difficulty, which is terrible for people to escape. 52 Figure 7 describes the smoke suppression performance and mechanism of CNC@MEL-PA and CNC. Much smoke is released during CNC combustion.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Facile Strategy to Design a Cellulose Nanocrystal-Based Nanocomposite Fire Retardant with Strong Smoke Suppression Efficiency

Zhang

Dong

et al. 2023

ACS Sustainable Chem. Eng.

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Fire accidents can trigger severe personal injury and large-scale property damage. Therefore, the use of flame retardant is essential. A novel green ternary nanocomposite intumescent flame retardant (IFR) (CNC@MEL-PA) was fabricated by successively modifying the gas source melamine (MEL) and acid source phytic acid (PA) on the carbon source cellulose nanocrystals (CNCs). CNC@MEL-PA exhibited better thermal stability, carbon layer formation ability, and smoke suppression efficiency due to its characteristic two-dimensional (2D) petal structure and intumescent carbon layer. Notably, compared to CNCs, the expanded carbon layer volume of CNC@MEL-PA was enhanced from about 62.2 to 169.6 mm3. Therefore, this study provides a facile synthetic route of high-performance CNC@MEL-PA with good smoke suppression efficiency for a green flame-retardant material for construction and transportation products.

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Halloysite nanotubes loaded with liquid organophosphate for enhanced flame retardancy and mechanical properties of polyamide 6

Boonkongkaew

Sirisinha

2018

J Mater Sci

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Enhanced flame retardancy of latex coating doped with clay nanotubes

Cited by 17 publications

References 17 publications

Environmentally Benign Halloysite Nanotube Multilayer Assembly Significantly Reduces Polyurethane Flammability

Environmentally Benign Halloysite Nanotube Multilayer Assembly Significantly Reduces Polyurethane Flammability

Facile Strategy to Design a Cellulose Nanocrystal-Based Nanocomposite Fire Retardant with Strong Smoke Suppression Efficiency

Halloysite nanotubes loaded with liquid organophosphate for enhanced flame retardancy and mechanical properties of polyamide 6

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