Improving flame retardant and smoke suppression function of ethylene vinyl acetate by combining the piperazine pyrophosphate, expandable graphite and melamine phosphate

Sun, Haowen; Chen, Kexuan; Yuan, Liu; Wang, Qi

doi:10.1016/j.eurpolymj.2023.112148

Cited by 17 publications

(1 citation statement)

References 39 publications

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“…Beyer reported that the using of organoclays modified with the quaternary ammonium compound leads to a decrease in the thermal stability of PVC 33 . Melamine cyanurate (MC) is one of the effective organic flame retardants which has already been used in polyurethanes, polyamides, polypropylene, and EVA 34–37 . The addition of MC as an organic flame retardant not only increases flame retardancy, but also allows the use of a lower percentage of inorganic retardants in the polymer matrix and also promotes the compatibility between polymer and nano particles 16,34,38,39 .…”

Section: Introductionmentioning

confidence: 99%

Plasticized polyvinyl chloride/melamine‐cyanurate modified Mg(OH)₂@bentonite nanocomposites; mechanical, thermal, and flame retardant properties

Hajibeygi

Soltani

Shabanian

et al. 2023

Vinyl Additive Technology

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In this work, a strategy was used to combine Mg(OH)2 nanoparticles (MDH), the bentonite nano‐sheets, and melamine cyanurate (MC) to prepare dioctyl phthalate (DOP) plasticized polyvinyl chloride (PVC) nanocomposites with increased thermal stability, Limiting Oxygen Index (LOI), and tensile strength as well as reduced total heat release. To prepare MC‐modified Mg(OH)2@bentonite nanohybrid (MMHB), MDH was installed on the calcined bentonite and consequently modified with MC. The nanocomposite thin films were prepared from plasticized‐PVC and MMHB using the solvent casting method. It was found that the combination of MDH and the bentonite nano‐sheets in the presence of MC could improve the PVC properties. Thermogravimetric analysis (TGA) in both N2 and air atmospheres, indicated that the thermal stability of PVC was enhanced via adding MMHB, which was evident by the increased thermal decomposition temperature. The microscale combustion calorimetry (MCC) results of the PVC nanocomposites with 5% and 8% by mass of MMHB revealed that an optimal isolating layer is formed, which increased flame retardant properties. The PVC matrix nanocomposite containing 8% by mass of MMHB with LOI value of 33.4% exhibited high flame retardancy. Moreover, the tensile strength and elastic modulus of the sample containing 5% by mass of MMHB increased by 65.5% and 55.2% compared to those of pristine PVC, respectively.Highlights A nanohybrid was prepared from Mg(OH)2 (MDH) and calcined bentonite. Preparation of melamine cyanurate (MC). Preparation of MC‐modified MDH@bentonite nanohybrid (MMHB). Effects of MMHB on thermal stability and flame retardancy of plasticized PVC. The efficient flame retardancy effect of the additive on plasticized PVC.

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Section: Introductionmentioning

confidence: 99%

Plasticized polyvinyl chloride/melamine‐cyanurate modified Mg(OH)₂@bentonite nanocomposites; mechanical, thermal, and flame retardant properties

Hajibeygi

Soltani

Shabanian

et al. 2023

Vinyl Additive Technology

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Synergistic flame retardancy of aluminum diethylphosphinate and piperazine pyrophosphate/β‐cyclodextrin in polylactic acid

Hu,

Wang,

Lai

et al. 2024

J of Applied Polymer Sci

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Polylactic acid has good biodegradability and processability, but its flammability and serious droplet characteristics limit its development and application. Therefore, developing safer flame‐retardant PLA materials is crucial. This research develops a novel flame‐retardant polylactic acid (PLA) material blend, utilizing aluminum diethylphosphinate (AlPi), piperazine pyrophosphate (PAPP), and β‐cyclodextrin. Optimal synergy occurs at a 5:1 PAPP/β‐CD mass ratio with 4 wt.% AlPi. This combination significantly reduces the heat release peak from 294.89 to 144.21 kW·m−2 and generates non‐combustible residues. The sample forms a stable, uniform carbon layer during combustion due to hydrogen bond crosslinking and Lewis acid–base reactions. The activation energy (Eα) is raised from 264.99 to 281.08 kJ·mol−1 between 312 and 402°C. Thus, an AlPi‐PAPP‐β‐CD based P‐C‐N composite flame retardant is investigated, offering a promising research direction for developing fire‐safe polylactic acid materials. This research may yield valuable insights for diverse applications.

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Sodium lignosulfonate improve the flame retardancy of carboxymethyl chitosan @ melamine polyphosphate‐containing silicone acrylic emulsion‐based coatings

Lai,

Wang,

et al. 2024

J of Applied Polymer Sci

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To address the flammability concerns of silicone acrylate emulsion (SAE), it is of utmost importance to develop composite coatings that excel in flame retardancy and smoke suppression. In this research, we have utilized carboxymethyl chitosan (CMCS) bonded‐melamine polyphosphate (MPP)/sodium lignosulfonate (LS) to create SAE composite SiPC coatings through the sol–gel method for flame‐retarding plywood. The results obtained that CMCS pretreatment of MPP (CMPP) facilitates the filling of P‐containing components in the SAE composite SiPC coating to further form a continuous and dense cross‐linked structure. Appropriate dosage of LS (2 wt.%) improve the flame retardancy of the coatings, which is manifested the peak heat release rate drops from 237.4 to 142.4 kW m−2, total smoke production (TSP) is also significantly reduces by 55%. Notably, the coating undergoes a transformation into a nonflammable vitreous polyphosphate barrier layer while burning, effectively preventing the transfer of heat or mass. According to the calculation results of adsorption kinetics, the formaldehyde adsorption rate of the SiPC coating increased by 76.6%. Furthermore, the pyrolysis kinetics identify that the 3D Z.‐L.‐T model governs the coatings' pyrolysis, and the appropriate LS makes the pyrolysis Eα rise from 300.98 to 326.50 kJ mol−1 at 358 – 439°C, indicating enhanced thermal stability. In conclusion, our research has introduced a novel design strategy for developing the SiPC coating with exceptional properties, studies the flame‐retardant mechanisms of SAE composite SiPC coating, promotes the advancement of sustainable urban building materials, and explores a green, clean, and low‐cost ecological technology approach.

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Improving flame retardant and smoke suppression function of ethylene vinyl acetate by combining the piperazine pyrophosphate, expandable graphite and melamine phosphate

Cited by 17 publications

References 39 publications

Plasticized polyvinyl chloride/melamine‐cyanurate modified Mg(OH)₂@bentonite nanocomposites; mechanical, thermal, and flame retardant properties

Plasticized polyvinyl chloride/melamine‐cyanurate modified Mg(OH)₂@bentonite nanocomposites; mechanical, thermal, and flame retardant properties

Synergistic flame retardancy of aluminum diethylphosphinate and piperazine pyrophosphate/β‐cyclodextrin in polylactic acid

Sodium lignosulfonate improve the flame retardancy of carboxymethyl chitosan @ melamine polyphosphate‐containing silicone acrylic emulsion‐based coatings

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Improving flame retardant and smoke suppression function of ethylene vinyl acetate by combining the piperazine pyrophosphate, expandable graphite and melamine phosphate

Cited by 17 publications

References 39 publications

Plasticized polyvinyl chloride/melamine‐cyanurate modified Mg(OH)2@bentonite nanocomposites; mechanical, thermal, and flame retardant properties

Plasticized polyvinyl chloride/melamine‐cyanurate modified Mg(OH)2@bentonite nanocomposites; mechanical, thermal, and flame retardant properties

Synergistic flame retardancy of aluminum diethylphosphinate and piperazine pyrophosphate/β‐cyclodextrin in polylactic acid

Sodium lignosulfonate improve the flame retardancy of carboxymethyl chitosan @ melamine polyphosphate‐containing silicone acrylic emulsion‐based coatings

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Product

Resources

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Plasticized polyvinyl chloride/melamine‐cyanurate modified Mg(OH)₂@bentonite nanocomposites; mechanical, thermal, and flame retardant properties

Plasticized polyvinyl chloride/melamine‐cyanurate modified Mg(OH)₂@bentonite nanocomposites; mechanical, thermal, and flame retardant properties