Research of aerogel in flame retardant field

Xu, Lifeng; Li, Linshan; Chen, Yajun

doi:10.1360/n032018-00165

Cited by 1 publication

(2 citation statements)

References 14 publications

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“…Generally, the flame-retardancy of polymer aerogels can be improved effectively by adding inorganic flame-retardant ingredients (clay [12,13], graphene oxide [14], montmorillonite [15,16], etc.) Materials 2020, 13, 2809 2 of 8 or grafting a flame-retardant chain [17] in the polymers. These methods can effectively improve polymeric flame-retardancy.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, designing and fabricating polymer aerogels with inherent flame-retardancy, while maintaining the self-extinguishing and excellent overall properties of polymer aerogels, is also a meaningful way to improve the flame-resistance of polymers [17]. Polybenzoxazine (PBO) aerogel is a new type of phenolic polymer aerogel material, which possesses intrinsic flame-resistance due to abundant benzene rings and nitrogen atoms in the structure [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Compressible, Flame-Resistant and Thermally Insulating Fiber-Reinforced Polybenzoxazine Aerogel Composites

Xiao

Liu

et al. 2020

Materials

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The preparation of novel polymer aerogel materials with enhanced flame-retardancy, superior thermal insulation and mechanical strength is of great practical significance in energy-savings and fire-prevention for buildings. Herein, we reported the fiber-reinforced polybenzoxazine (PBO) aerogel composites with flame retardance and thermal insulation, which were prepared under room temperature and atmospheric pressure, and using 4,4′-diaminodiphenlymethane (MDA) benzoxazine monomer as the raw material and oxalic acid (OA) as the catalyst. Several outstanding attributes were achieved in the aerogel composites, such as relatively low thermal conductivity (0.069 W/m·K at 105 Pa, 0.031 W/m·K at 5 Pa), high limiting oxygen index (LOI) up to 32.5, and enhanced mechanical properties. It can be compressed to more than 80% of the deformation without obvious cracks, and shows high compressive modulus and specific modulus (20.69 MPa and 5.05 × 104 N·m/Kg, respectively). All the excellent comprehensive properties mean that fiber-reinforced PBO aerogel composites have broad application prospects in the fields of flame retardancy and thermal insulation.

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