Influence of modified mesoporous silica SBA‐15 on the flammability of intumescent high‐density polyethylene

Matar, Mohamad; Azambre, B.; Cochez, M.; Vahabi, Henri; Fradet, Frédéric

doi:10.1002/pat.3805

Cited by 20 publications

(14 citation statements)

References 52 publications

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“…Phosphorus-containing FR materials which are integrated into polymer matrix without covalent bonds, tends to decompose beyond 250°C due to less stable bonds of PÀ OÀ C than CÀ C bond hence accelerates the degradation of polymer matrix. [31][32][33] Same phenomenon was observed in our experiments. Both T 5 wt % and T max wt % values had decreased while the amount of flame retardant material doped MPSs had increased.…”

Section: Thermal Stabilitysupporting

confidence: 89%

Phosphorus Ester Containing Mesoporous Silica as Novel High‐Effective Flame Retardant in Polyurethane and Polyester Coatings

Aytan

Kahraman

2021

ChemistrySelect

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In this study mesoporous silica spheres (MPSs) and polyphosphoric acid based organophosphate ester flame retardant (FR material) material were synthesized and flame retardancy performance in acrylate-based polyurethanes (PUR) and polyester (PET) resins investigated. For this, both MPSs and FR material were synthesized according to literature and FR material was loaded into MPSs which takes the role of carrier. Loaded MPSs were put into UV curable PUR and PET resins and polymerized under UV radiation. Their characteristics were investigated by FT-IR, TGA, LOI, SEM and TEM. The results showed that FR material had excellent flame-retardant abilities for both PUR and PET series. The TGA curves suggested that synthesized FR material shows lower thermal stability at low temperatures than original materials however it showed good ability of char formation at higher temperatures, therefore improving the flame retardant property of samples. Moreover the LOI analysis showed that flame retardancy properties were improved significantly. The additive increased the LOI value from 20,5 and 21 to 26,5 and 27.

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Section: Thermal Stabilitysupporting

confidence: 89%

Phosphorus Ester Containing Mesoporous Silica as Novel High‐Effective Flame Retardant in Polyurethane and Polyester Coatings

Aytan

Kahraman

2021

ChemistrySelect

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“…One of the most important ways to improve the flame retardancy of polyolefins is to use an intumescent flame retardant (IFR), which is generally composed of ammonium polyphosphate (APP) and pentaerythritol (PER) . 2,3 During combustion, the APP/PER generates a protective char layer on the surface, thereby inhibiting the transfer of mass, flammable gases, and heat to prevent the underlying matrix from further burning 4,5 . However, the intumescent formulation alone cannot provide the desired flame‐retardant properties for commercial use.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effects of polyoxometalate‐based ionic liquid‐doped sepiolite in intumescent flame‐retardant high‐density polyethylene

Liang

et al. 2021

Polymers for Advanced Techs

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A polyoxometalate‐based ionic liquid‐doped sepiolite (SEP‐PIL) was prepared by electrostatically immobilizing phosphomolybdic acid (PMA) on natural sepiolite embedded with imidazolium cations (SEP‐IL), and its structural properties were fully characterized by various methods. Furthermore, a new intumescent flame‐retardant system (IFR) for high‐density polyethylene (HDPE) was constructed by adding SEP‐PIL into conventional HDPE/IFR composites. The retardant properties and thermal decomposition behaviors were comprehensively investigated. The results showed that the HDPE composite containing 24 wt% IFR and 1 wt% SEP‐PIL passed UL‐94V‐0 rating, and the limiting oxygen index increased from 17.8% (pure HDPE) to 27.6%. In addition, the HDPE/IFR/SEP‐PIL composite had lower peak heat release rate (PHRR) and total heat release (THR) compared to the HDPE/IFR composite. The thermogravimetric analysis demonstrated that the combination of SEP‐PIL with IFR could greatly promote the formation of residual chars. Dynamic rheological measurement further confirmed that the synergistic effect of SEP‐PIL and IFR could greatly improve the flame retardancy of HDPE/IFR/SEP‐PIL composites.

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“…Silicon‐containing materials have been also used widely as eco‐friendly flame‐retardants with no phosphorus 44–51 . It has been reported that the presence of silicon element in a flame‐retardant material has improved the thermal stability of the char layer formed during combustion 44,48,50,52 .…”

Section: Introductionmentioning

confidence: 99%

“…Mesoporous silica materials, such as MCM‐41 and SBA‐15, are largely studied because of facile synthesis, ease of successive functionalization, highly ordered nanostructure, large surface area, and uniform and tailorable pore size 53,54 . Mesoporous silica‐based materials have attracted the attention of many researchers in the field of flame retardancy in recent years 44,45,51,55,56 . High surface area, uniform and large pore size, special open‐pore structure, and the presence of SiOH active sites make mesoporous silica more conducive to toxic smoke suppression and molecular capture.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of dialdehyde cellulose/amino‐functionalizedMCM‐41 core‐shellmicrospheres as a new eco‐friendly flame‐retardant nanocomposite

Abboud

Bondock

El‐Zahhar

et al. 2020

J of Applied Polymer Sci

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Using proper flame‐retardant materials when constructing buildings or fabricating devices is the most important fire safety guidelines. The halogen and phosphorus‐based compounds are among the most effective flame retardants. However, most of these compounds are recognized to have a harmful effect on human body and the environment during combustion. In this context, we designed and synthesized a new eco‐friendly flame‐retardant nanocomposite by combining dialdehyde cellulose (DAC) and amino‐functionalized mesoporous silica MCM‐41 (N‐M41). Spherical N‐M41 nanoparticles have been successfully prepared in one‐pot reaction using tetraethyl orthosilicate and (3‐aminopropyl)triethoxysilane (APTES), and then coated with different amounts of DAC through Schiff base reaction between the carbonyl group of DAC and NH2 of APTES. The resulted DAC@N‐M41 nanocomposite was characterized by XRD, Fourier transform infrared, scanning electron microscopy, transmission electron microscopy, differential thermal analysis (DTA) and thermogravimetry analysis (TGA). TEM micrographs revealed that this nanocomposite was made up of core‐shell nanospheres structure with narrow size distribution (ca. 140 nm). DTA and TGA analysis revelated that the presence of silica within the nanocomposite can effectively increase the char yield, decrease the heat release, and improve the fire performance of the prepared nanocomposite. A mechanism of the reduction in flammability of this nanocomposite has been proposed.

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Influence of modified mesoporous silica SBA‐15 on the flammability of intumescent high‐density polyethylene

Abstract: International audienc

Cited by 20 publications

References 52 publications

Phosphorus Ester Containing Mesoporous Silica as Novel High‐Effective Flame Retardant in Polyurethane and Polyester Coatings

Phosphorus Ester Containing Mesoporous Silica as Novel High‐Effective Flame Retardant in Polyurethane and Polyester Coatings

Synergistic effects of polyoxometalate‐based ionic liquid‐doped sepiolite in intumescent flame‐retardant high‐density polyethylene

Synthesis and characterization of dialdehyde cellulose/amino‐functionalizedMCM‐41 core‐shellmicrospheres as a new eco‐friendly flame‐retardant nanocomposite

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