Highly flame‐retardant and low toxic polybutylene succinate composites with functionalized BN@APP exfoliated by ball milling

Abstract

This article describes the preparation of nitrogen‐phosphorus‐doped boron nitride (BN@APP) as a multifunctional nanofiller for flame‐retardant and thermal conductivity in polybutylene succinate (PBS). The BN@APP was obtained by a one‐step ball milling method. The improvement of thermal conductivity effectively reduces the generation of toxic smoke during PBS combustion. After incorporating 1.0 wt% BN@APP into the PBS, the thermal conductivity of the PBS composite is increased by 62.8%. The heat and toxic smoke are reduced significantly, the heat release rate, total heat release, and total smoke rate of PBS composites were dramatically reduced by 28.2%, 23.5%, and 44.8%, respectively, compared to pure PBS. This research offers a prospective route to prepare highly flame‐retardant composites that have low‐toxicity and smoke.

Thermally conductive polymer-based composites: fundamentals, progress and flame retardancy/anti-electromagnetic interference design

“…17a). 179 BNNS 1 was made by ball-milling with NH 4 PO 3 without NaOH; BNNS 2 was made by ball-milling with NH 4 PO 3 and NaOH, which is shown in Fig. 17c.…”

Column-to-Beam Architecture Inspires Interface-Engineered MXene Nanosheet/Boron Nitride Nanosheet/Polydopamine Hybrids for Fire Retardants

“…Multidirectional and in-depth research has been conducted to explore the application prospects of BN in many fields, such as photocatalysis and thermal management . More interestingly, BN nanosheets with a 2D structure and excellent heat resistance are regarded as useful nanofillers for enhancing the thermal stability, thermal conductivity, and flame retardancy of polymers. , For instance, Feng et al introduced ionic liquid-modified hydroxylated BN nanosheets into EP, resulting in a significant improvement in fire resistance. Besides, Han et al combined ammonium phosphate and NaOH to synthesize functionalized BN nanosheets using a ball milling process, which effectively inhibited the PHRR and SPR of the polymer by 60.0 and 44.3%, respectively.…”

Al2O3/h‐BN/epoxy based electronic packaging material with high thermal conductivity and flame retardancy

“…Hexagonal boron nitride (h‐BN) sheet, due to its graphite‐like structure, is an ideal candidate to prepare EP‐based composites with the compatibility of thermal conductivity, 41 insulation, and flame retardancy 12,42–51 . Because h‐BN has high thermal conductivity (~2000 W/mK by theoretical calculation and 380 W/mK by experience in plane), 52 high electrical insulation, intrinsic breakdown voltage and mechanical properties, as well as high thermal/chemical stability 12,21,23,25 . However, h‐BN sheets will sharply enhance the viscosity of EP owing to the weak compatibility between h‐BN and EP due to no functional groups on the surface of BN, thus reduce its dispersion in EP.…”

“…Inorganic additives, such as boron nitride (BN), 14,15,20,21 alumina (Al 2 O 3 ), 16,22 as well as carbon materials (e.g., carbon nanotubes (CNTs), 23 graphene 24,25 and expandable graphite (EG) 26 ) are employed to realize the compatibility of high thermal conductivity and flame retardancy of EP, in which, carbon materials are electrically conducting, which limits their applications in electronic packaging field 27 …”

“…12,[42][43][44][45][46][47][48][49][50][51] Because h-BN has high thermal conductivity (~2000 W/mK by theoretical calculation and 380 W/mK by experience in plane), 52 high electrical insulation, intrinsic breakdown voltage and mechanical properties, as well as high thermal/chemical stability. 12,21,23,25 However, h-BN sheets will sharply enhance the viscosity of EP owing to the weak compatibility between h-BN and EP due to no functional groups on the surface of BN, thus reduce its dispersion in EP. For instance, when the filler content is 30 wt %, the viscosity of EP increases largely to ~703,000 mPa s, 53 3700.8% increase of pure EP, which makes it hard to pot.…”