Improving the Flame Retardancy of Polybenzoxazines with a Reactive Phosphorus-Containing Compound

Hong, Ling; Gu, Yi

doi:10.1080/00222348.2011.563197

Cited by 16 publications

(11 citation statements)

References 25 publications

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“…11 Polybenzoxazines with high ame retardant properties have gained attention owing to the high demand for electronic materials. 12 Previous studies on enhancement of the ammability properties of polybenzoxazines have been focused mainly on the use of phosphorus-, [13][14][15] silicon-, 16 and nitrogen-based 17 ame retardants. Most of them have been incorporated directly by chemical graing onto the monomer through chemical modication of the amine or phenol precursors involved in the polybenzoxazine synthesis.…”

Section: Introductionmentioning

confidence: 99%

Convenient and solventless preparation of pure carbon nanotube/polybenzoxazine nanocomposites with low percolation threshold and improved thermal and fire properties

et al. 2014

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Section: Introductionmentioning

confidence: 99%

Convenient and solventless preparation of pure carbon nanotube/polybenzoxazine nanocomposites with low percolation threshold and improved thermal and fire properties

et al. 2014

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“…However, solutions can be provided by either physical blending with flame retardants or by chemical modification. Several research groups attempted to solve these issues by designing multi amine precursors [63,64] or by introducing, silica/silicon, phosphorus, boron, and furan [52,[65][66][67][68][69][70].…”

Section: Cardanol Based Polybenzoxazines For Flame Resistant Applicationsmentioning

confidence: 99%

Development of Halogen Free Sustainable Polybenzoxazine Matrices and Composites for Flame Retardant Applications

Devaraju¹,

Krishnadevi²,

Alagar³

2021

Flame Retardant and Thermally Insulating Polymers

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In recent years, with the growing concern on energy crises, the development of new products from sustainable resources have been received much greater consideration owing to the environmental concerns caused by the rapid reduction of non-renewable fossil resources. The widespread utilization of polymeric materials led to a considerable increase in fire risk in our daily life due to their flammable behavior. Hence, the flame-retardant properties of polymeric materials are considered as one of the most significant criteria to use them in wide range of industrial applications. It is well known that mostly halogenated flame retardant materials are widely used for flame retardant applications. However, they release toxic gases and corrosive smoke during combustion, and consequently they contribute to serious environmental pollution. In this connection, in the present chapter we discussed the different types of non-halogen based environmentally friendly bio-based polybenzoxazine matrices developed from renewable and sustainable bio-phenolic materials viz., cardanol, eugenol, guiacol and etc., and the composites obtained by reinforcing with varying weight percentages of flame resistant reinforcements/additives and their flame retardant properties obtained from different analytical techniques.

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“…Polybenzoxazines are a class of addition-polymerizable phenol-based thermosets that have attracted great academic and commercial attention over the last few decades. This popularity has arisen from their unusual and excellent properties in comparison to traditional thermosetting materials, including good mechanical and thermal properties, low shrinkage during polymerization, high char yield, − low dielectric constant, − flame retardancy, − and polymerization without the production of byproducts . A point of particular interest is the excellent molecular design flexibility of benzoxazines and their polymers that creates tailorable properties. − …”

Section: Introductionmentioning

confidence: 99%

Very High-Char-Yielding Elastomers Based on the Copolymers of a Catechol/Furfurylamine Benzoxazine and Polydimethylsiloxane Oligomers

Machado

Rachita

Fuller

et al. 2021

ACS Sustainable Chem. Eng.

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Main chain-type elastomeric polybenzoxazines (abbreviated as CA-pdms-fu) with very high char yield have been developed. Seven compositions of elastomeric benzoxazine adhesives are synthesized to find the optimum structure by changing the chain length of the siloxane component. The successful synthesis of CApdms-fu derived from catechol is confirmed with 1 H NMR and FT-IR spectroscopy. Polymerization characteristics, including polymerization temperature, enthalpy of polymerization, and extent of polymerization for all seven compounds, are analyzed from FT-IR and DSC data. The TGA results indicate remarkable superiority of CA-pdms-fu over traditional epoxy and polyurethane adhesives, with 93% higher char yield than polyurethane elastomer. The flammability of the elastomeric polymer was quantified by heat release capacity using microscale combustion calorimetry (MCC). The seven compositions of elastomeric polybenzoxazines exhibit heat release capacities between 48 and 63 J/g•K, which are within the noncombustible material range, without added flame retardants. Adhesive failure strengths are determined by lap shear strength, making a single lap shear joint on aluminum and copper rectangular bars. The lap shear strength for cross-linked poly(CA-pdms(2)-fu) is comparable to polyurethane adhesives, and the low flammability and very high char yield make this polymer suitable for developing fire-resistant elastomeric materials.

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Improving the Flame Retardancy of Polybenzoxazines with a Reactive Phosphorus-Containing Compound

Cited by 16 publications

References 25 publications

Convenient and solventless preparation of pure carbon nanotube/polybenzoxazine nanocomposites with low percolation threshold and improved thermal and fire properties

Convenient and solventless preparation of pure carbon nanotube/polybenzoxazine nanocomposites with low percolation threshold and improved thermal and fire properties

Development of Halogen Free Sustainable Polybenzoxazine Matrices and Composites for Flame Retardant Applications

Very High-Char-Yielding Elastomers Based on the Copolymers of a Catechol/Furfurylamine Benzoxazine and Polydimethylsiloxane Oligomers

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