Study on the effect of PolyFR and its FR system on the flame retardancy and foaming behavior of polystyrene

Wang, Yaqiao; Jiang, Hanchuan; Ni, Jingyue; Chen, Jianze; Zhou, Hongfu; Wang, Xiangdong; Xin, Fei

doi:10.1039/c8ra09680e

Cited by 9 publications

(5 citation statements)

References 57 publications

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“…The optimal flammability was obtained with graphite at 1.9 wt%, the reduction in the pHRR was almost 25% compared to the neat polymer and the compressive strength achieving a maximum value of 26 KPa when the filler content was 1.9 wt%, finally, they concluded that the graphite addition forms a layer during the burning of the foam surface. Also, Wang et al 26 studied the effect of a brominated polymeric flame retardant based in particles as antimonous oxide (Sb 2 O 3 ), organo‐montmorillonite (OMMT) and graphite on the flame retardancy and foaming behavior of polystyrene. The addition of 2 wt% graphite into the flame‐retardant system exhibited a reduction in the pHHR of about 28%, this effect was attributed to the barrier and labyrinth effects of the dispersed silicate layers which hinder diffusion of volatile decomposition products within the polystyrene composites leading to weakening of droplet effect and impede the circulation of HBr.…”

Section: Introductionmentioning

confidence: 99%

Graphite effect on the mechanical and fire‐retardant performance of low‐density polyethylene and ethylene‐vinyl‐acetate foam composites

González‐Morones

Cabrera-Álvarez

Sifuentes‐Nieves

et al. 2021

J of Applied Polymer Sci

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In this study, the graphite effect on the mechanical and fire‐retardant performance of low‐density polyethylene (LDPE) and ethylene‐vinyl‐acetate (EVA) foam composites was investigated. Polymer composites were prepared by melt mixing process and foamed by hot press molding at different graphite content (0, 3, 6, and 12 phr). Cone calorimetric tests through heat release rate (HRR) curves obtained, revealed a decreasing of 45% on peak heat release rate (pHRR) of foam composites LDPE‐EVA with 12 phr of untreated graphite content compared than those LDPE‐EVA foamed composites without graphite, which was attributed to the good distribution of graphite in the composite and more residual generates as thermogravimetric analysis suggested. Mechanical properties of polymer foamed composites with high graphite content do not show significant detrimental as a result to the formation of more uniform cells with smaller size incorporating a material with high modulus like graphite. The results suggest that polymer foam composites with graphite are suitable for the building and construction industry, in sealing and thermal insulation applications with good fire‐retardant performance.

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Section: Introductionmentioning

confidence: 99%

Graphite effect on the mechanical and fire‐retardant performance of low‐density polyethylene and ethylene‐vinyl‐acetate foam composites

González‐Morones

Cabrera-Álvarez

Sifuentes‐Nieves

et al. 2021

J of Applied Polymer Sci

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“…Nucleation occurred more easily at the interface of the two substances, compared with homogeneous nucleation, due to the lower activation energy of heterogeneous nucleation. 30 Therefore, numerous nucleation sites were available due to the presence of the AMWs, which promoted the heterogeneous nucleation of PBT, resulting in an increase in nucleation density and thereby reducing the crystallite sizes.…”

Section: Resultsmentioning

confidence: 99%

Preparation of polybutylene terephthalate/artificial marble wastes composites with simultaneously enhanced thermal, crystallization, and impact properties by in situ polymerization

Feng

Pang

et al. 2022

Journal of Thermoplastic Composite Materials

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The treatment of artificial marble wastes (AMWs) is a difficult aspect of the artificial marble industry and has enormous impacts on the environment. Herein, a series of polybutylene terephthalate (PBT)/AMWs composites were prepared by in situ polymerization. The effects of AMWs content (1–10 wt%) on the thermal stability, crystallization rate, and impact strength of the PBT/AMWs composites were investigated in detail. The results showed that the composites containing 10 wt% of AMWs exhibited the best performance. Due to the high thermal resistance and uniform distribution of the AMWs particles, the heat deflection temperature reached 67.40°C with optimal thermal stability. Additionally, under heterogeneous nucleation, the crystallization rate was also the highest, and impact strength reached 17.29 kJ/m2 due to the partial core-shell structure and hardened matrix effects of the AMWs particles.

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“…[ 38 ] In addition, a comparison of LOI values for fossil‐based, fire‐retardant FR foams with the best performance: PVC, phenolic resin and polyimide, such a comparison shows the high performance of CNF/XG/MTM foams. [ 39–46 ]…”

Section: Resultsmentioning

confidence: 99%

Green and Fire Resistant Nanocellulose/Hemicellulose/Clay Foams

Carosio

Medina

Kochumalayil

et al. 2021

Adv Materials Inter

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Lightweight polymer foams from synthetic polymers are commonly used in a wide‐spread spectrum of application fields. Their intrinsic flammability coupled with restrictions on flame retardant chemicals poses a severe threat to safety. Here, fire resistant foams comprising biobased components capable of replacing petroleum‐based foams are investigated. Cellulose nanofibers are combined with 2D montmorillonite nanoplatelets and a native xyloglucan hemicellulose binder, using a water‐based freeze casting approach. Due to the silicate nanoplatelets, these lightweight foams self‐extinguish the flame during flammability tests. The limiting oxygen index is as high as 31.5% and in the same range as the best fire‐retardant synthetic foams available. In cone calorimetry, the foams display extremely low combustion rates. Smoke release is near the detection limit of the instrument. In addition, the foams are withstanding the penetration of a flame torch focused on one side of the specimen (T on surface 800 °C) and structural integrity is maintained. At the same time, the unexposed side is insulated, as demonstrated by a through‐thickness temperature drop of 680 °C cm−1. The results represent a tremendous opportunity for the development of fire‐safe foams combining excellent sustainability with multifunctional performance.

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Study on the effect of PolyFR and its FR system on the flame retardancy and foaming behavior of polystyrene

Abstract: Environmentally-friendly flame retardant, PolyFR, has an excellent effect on the flame retardancy and foaming behavior of polystyrene.

Cited by 9 publications

References 57 publications

Graphite effect on the mechanical and fire‐retardant performance of low‐density polyethylene and ethylene‐vinyl‐acetate foam composites

Graphite effect on the mechanical and fire‐retardant performance of low‐density polyethylene and ethylene‐vinyl‐acetate foam composites

Preparation of polybutylene terephthalate/artificial marble wastes composites with simultaneously enhanced thermal, crystallization, and impact properties by in situ polymerization

Green and Fire Resistant Nanocellulose/Hemicellulose/Clay Foams

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