Ionic liquid modified boron nitride nanosheets for interface engineering of epoxy resin nanocomposites: Improving thermal stability, flame retardancy, and smoke suppression

Feng, Tingting; Wang, Yaxuan; Dong, Huixin; Piao, Junxiu; Wang, Yaofei; Ren, Jinyong; Chen, Wenjiao; Liu, Wei; Chen, Xilei; Jiao, Chuanmei

doi:10.1016/j.polymdegradstab.2022.109899

Cited by 29 publications

(7 citation statements)

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“…This indicates that the BN-PDA-MXene nanohybrids can effectively suppress the release of toxic fumes. It is reasonable to know that the blocking effect of the char residue is among the most critical reasons affecting the thermal stability, smoke suppression, and detoxification properties of polymer materials . Interestingly, as given in Table and Figure i, only 17.1% of char residue is left after burning neat EP, while EP/MXene and EP/BN-PDA increase to 19.4 and 18.3%, respectively.…”

Section: Results and Discussionmentioning

confidence: 96%

“…It is reasonable to know that the blocking effect of the char residue is among the most critical reasons affecting the thermal stability, smoke suppression, and detoxification properties of polymer materials. 30 Interestingly, as given in Table 1 and Figure 6i, only 17.1% of char residue is left after burning neat EP, while EP/MXene and EP/BN-PDA increase to 19.4 and 18.3%, respectively. When the same amount of BN-PDA-MXene nanohybrids is incorporated into the EP matrix, the amount of the char residue jumps to 20.4%, showing an amazing protective effect of the char residue.…”

Section: Thermal Properties Of Ep Compositesmentioning

confidence: 86%

“…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.…”

Section: Introductionmentioning

confidence: 99%

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

Luo

Gong

Pan

et al. 2022

ACS Appl. Nano Mater.

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Thermosetting epoxy resin (EP) has a high fire hazard that generates a lot of heat and toxic fumes, which is considered a prominent drawback that limits the practical application of EP. Therefore, inspired by the column-to-beam architecture, the BN-PDA-MXene nanohybrid was developed via covalent cross-linking and hydrogen bonding. The results showed that the stable column-to-beam architecture not only prevented the stacking of 2D nanosheets but also built a labyrinth-type array in the EP matrix, which was beneficial to enhancing the thermal stability and flame-retardant performance of EP composites. In particular, with the addition of the 2% BN-PDA-MXene nanohybrid, the maximum mass loss rate (MLRmax) of the EP composite was reduced and the char residue increased. Meanwhile, compared with pure EP, there was a marked reduction of 22.2% in the peak heat release rate, demonstrating the suppressed heat release. Furthermore, EP/BN-PDA-MXene had excellent smoke suppression performance, which was mainly reflected by the downward trend of the peak smoke production rate, total smoke production, and peak CO production rate, together with an obvious reduction of 39.9% in smoke factor. By studying the char residue, it was confirmed that the BN-PDA-MXene nanohybrid had a certain inhibitory effect on the fire hazard of EP due to its lamellar barrier effect, as well as the catalytic detoxification and catalytic carbonization of transition elements.

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Section: Results and Discussionmentioning

confidence: 96%

Section: Thermal Properties Of Ep Compositesmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

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

Luo

Gong

Pan

et al. 2022

ACS Appl. Nano Mater.

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“…14 The peak near 1340 cm À1 corresponds to the in-plane tensile vibration of the B N bond of BN. 14 The peak near 3210 cm À1 corresponds to the tensile vibration of the B OH bond, 21,22 explaining that there are trace hydroxyl groups on the surface of BN. The overall chemical stability of BN is relatively high due to the few functional groups on the surface.…”

Section: Fourier Transform Infraredmentioning

confidence: 99%

Silane coupling agent and carboxymethyl chitosan co‐modified boron nitride for preparing silicone acrylic emulsion‐based flame‐retarding coatings

Wang,

Xue,

et al. 2023

J of Applied Polymer Sci

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Herein, the synergistic effect of the silane coupling agent (KH550) and carboxymethyl chitosan (CMCS) co-modified boron nitride (BN) on the fireproof property of silicone acrylic emulsion-based composite is investigated to explore halogen-free coatings for flame-retarding plywood. Firstly, KH550 and CMCS co-modified BN improves its compatibility with the silicone acrylic emulsion.The results show that an appropriate loading of BN (2 wt%) enhances flame retardancy. The peak-heat release rate decreases from 86.01 to 54.95 kW m À2 , with the reduced fire growth index decreasing from 0.31 to 0.16 kW m À2 s À1 , and the average effective heat of combustion drops from 0.99 to 0.85 kW g À1 .Meanwhile, the x-ray diffraction results demonstrate that the co-modified BN reacts with the phosphoric acid generated by APP decomposition and transforms into BPO 4, enhances the thermal insulation of the coating. The pyrolysis kinetics confirms that the co-modified BN increases E α at 300-380 C by 23.4% and E α at 380-430 C by 21.5%. The water contact angle clarifies that the comodified BN significantly imparts higher water resistance to the coating. Generally, the high thermal conductivity of co-modified BN effectively achieves heat dissipation and facilitates the uniform charring of the composite coating, leading to the as-formed resilient residues for blocking flame development.

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“…Thus, the goal of this review is to discuss studies focusing on the structure and dynamics of nanomaterials that incorporate ionic (electrostatic) interactions between polymers and nanoparticles, and how this interaction can lead to improved material properties, such as mechanical, rheological, and self-healing properties. However, in this review we do not include studies where ionic liquids (ILs) have been blended with polymer nanoparticle mixtures [ 23 , 24 , 25 , 26 , 27 ] in order to improve the dispersion of the nanoparticles in the matrix. Nor do we consider nanocomposite materials in which ionic liquids have been used as compatibilizers [ 28 , 29 , 30 ] or plasticizers [ 31 , 32 ] nor nanofluids synthesized by polymer physical adsorption or covalent bonding, in order to achieve nanoparticle dispersion in the matrix.…”

Section: Introductionmentioning

confidence: 99%

From Ionic Nanoparticle Organic Hybrids to Ionic Nanocomposites: Structure, Dynamics, and Properties: A Review

Karatrantos

Mugemana²,

Bouhala³

et al. 2022

Nanomaterials

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Ionic nanoparticle organic hybrids have been the focus of research for almost 20 years, however the substitution of ionic canopy by an ionic-entangled polymer matrix was implemented only recently, and can lead to the formulation of ionic nanocomposites. The functionalization of nanoparticle surface by covalently grafting a charged ligand (corona) interacting electrostatically with the oppositely charged canopy (polymer matrix) can promote the dispersion state and stability which are prerequisites for property “tuning”, polymer reinforcement, and fabrication of high-performance nanocomposites. Different types of nanoparticle, shape (spherical or anisotropic), loading, graft corona, polymer matrix type, charge density, molecular weight, can influence the nanoparticle dispersion state, and can alter the rheological, mechanical, electrical, self-healing, and shape-memory behavior of ionic nanocomposites. Such ionic nanocomposites can offer new properties and design possibilities in comparison to traditional polymer nanocomposites. However, to achieve a technological breakthrough by designing and developing such ionic nanomaterials, a synergy between experiments and simulation methods is necessary in order to obtain a fundamental understanding of the underlying physics and chemistry. Although there are a few coarse-grained simulation efforts to disclose the underlying physics, atomistic models and simulations that could shed light on the interphase, effect of polymer and nanoparticle chemistry on behavior, are completely absent.

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Ionic liquid modified boron nitride nanosheets for interface engineering of epoxy resin nanocomposites: Improving thermal stability, flame retardancy, and smoke suppression

Cited by 29 publications

References 50 publications

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

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

Silane coupling agent and carboxymethyl chitosan co‐modified boron nitride for preparing silicone acrylic emulsion‐based flame‐retarding coatings

From Ionic Nanoparticle Organic Hybrids to Ionic Nanocomposites: Structure, Dynamics, and Properties: A Review

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