Study of thermal and flame behavior of phosphorus-based silica for epoxy composites

Shree, Vibha; Sen, Asim K.

doi:10.1007/s10971-017-4546-1

Cited by 11 publications

(7 citation statements)

References 40 publications

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“…Afzal et al produced epoxy-silicon nanocomposites by a sol-gel process [210] ; with 20 wt% silica content, the thermal stability of the resin was significantly improved. Using a similar sol gel process, Shree and Sen [211] incorporated different phosphorus compounds during the solgel process to produce epoxy-phosphorus-silicon nanocomposites with improved thermal stability and reduced flammability. Hu's group have reported using unmodified hollow mesoporous silica and mesoporous silica coated with chitosan/phosphorylated cellulose, [203] or modified with P/N hyperbranched molecules [201] in epoxy resin at 2 wt%, all of which significantly reduced PHRR and smoke emission in a cone calorimetric test and increased char formation.…”

Section: Nanosilicamentioning

confidence: 99%

Flame retardants for epoxy resins: Application‐related challenges and solutions

Kandola

Magnoni

Ebdon

2022

Vinyl Additive Technology

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Section: Nanosilicamentioning

confidence: 99%

Flame retardants for epoxy resins: Application‐related challenges and solutions

Kandola

Magnoni

Ebdon

2022

Vinyl Additive Technology

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“…The so-prepared microspheres (SiO 2 @UiO-66-2) exhibited very good dispersion in a DGEBA matrix cured with DDM, compared to systems containing either SiO 2 or UiO-66-NH 2 only, resulting in a slight increase of glass transition temperature and modulus. Hybrid epoxy composites containing 3 wt.% of SiO 2 @UiO-66-2 showed a strong decrease of total smoke Phosphorus-containing silica was prepared by acid hydrolysis and condensation of sodium silicate using three different phosphorus precursors (namely, H 3 PO 4 , H 3 PO 2 and Na 2 HPO 4 ) [76]. The obtained particles, about 1 µm in size, incorporating 2-5 wt.% of P, were used as fillers in an epoxy resin cured with an alkylamine.…”

Section: Metal Hydroxides Oxides and Sol-gel Architectures As Flame R...mentioning

confidence: 99%

Flame retarded polymer systems based on the sol-gel approach: recent advances and future perspectives

Bifulco

Imparato

Aronne

et al. 2022

J Sol-Gel Sci Technol

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The ease of flammability of polymers represents a key issue that limits their applications in different advanced sectors. In this context, a reliable and effective solution regards the use of flame retardants, i.e., additives that are able to slow down (or even stop) the flame propagation and to enhance the resistance to an irradiative heat flux. Among the different flame retardants designed, synthesized, and applied up-to-now, the utilization of inorganic particles, inorganic and hybrid organic-inorganic coatings has gathered a great interest from either the academic and industrial community, as these structures can provide remarkable flame retardant features to different polymer systems, in which they are embedded or applied onto. In particular, the in situ generation (through sol-gel processes, i.e. hydrolysis and condensation reactions from tailored alkoxide precursors) of ceramic phases, either in the form of particles or as surface coatings, has clearly demonstrated its effectiveness in creating a physical barrier that limits the degradation of the polymer when subjected to the application of a flame or an irradiative heat flux. It also lowers the heat and mass transfer from the degrading polymer to the surroundings and vice versa, hence providing an overall enhancement of heat and fire resistance. This review work seeks to provide an up-to-date overview of the most recent advances in the use of sol-gel methods for conferring flame retardant features to bulk polymers, cellulosic textiles (cotton), and polymer foams. In addition, the current limitations and the potential progresses of these approaches are discussed.

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“…addition of silica, and the presence of GLYMO enhanced the organic compatibility of epoxy nanocomposites, further improving the thermal stability. Three different phosphorus-containing silicas were prepared from di-sodium hydrogen orthophosphate, orthophosphoric acid, hypophosphorous acid and sodium silicate respectively, and added these three compounds to the epoxy composite [151]. The results showed that the addition of phosphorus-containing silica could increase the carbon residue of 10-14 wt.% at 650 °C.…”

Section: Silicamentioning

confidence: 99%

“…Three different phosphorus-containing silicas were prepared from di-sodium hydrogen orthophosphate, orthophosphoric acid, hypophosphorous acid and sodium silicate respectively, and added these three compounds to the epoxy composite [151]. The results showed that the addition of phosphorus-containing silica could increase the carbon residue of 10-14 wt.% at 650 • C. The LOI value rises marginally due to lower phosphorus content.…”

Section: Possmentioning

confidence: 99%

Recent Developments in the Flame-Retardant System of Epoxy Resin

et al. 2020

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With the increasing emphasis on environmental protection, the development of flame retardants for epoxy resin (EP) has tended to be non-toxic, efficient, multifunctional and systematic. Currently reported flame retardants have been capable of providing flame retardancy, heat resistance and thermal stability to EP. However, many aspects still need to be further improved. This paper reviews the development of EPs in halogen-free flame retardants, focusing on phosphorus flame retardants, carbon-based materials, silicon flame retardants, inorganic nanofillers, and metal-containing compounds. These flame retardants can be used on their own or in combination to achieve the desired results. The effects of these flame retardants on the thermal stability and flame retardancy of EPs were discussed. Despite the great progress on flame retardants for EP in recent years, further improvement of EP is needed to obtain numerous eco-friendly high-performance materials.

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Study of thermal and flame behavior of phosphorus-based silica for epoxy composites

Cited by 11 publications

References 40 publications

Flame retardants for epoxy resins: Application‐related challenges and solutions

Flame retardants for epoxy resins: Application‐related challenges and solutions

Flame retarded polymer systems based on the sol-gel approach: recent advances and future perspectives

Recent Developments in the Flame-Retardant System of Epoxy Resin

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