Flame Retardancy of Carbon Nanotubes Reinforced Carbon Fiber/Epoxy Resin Composites

Chai, Guoqiang; Zhu, Guoqing; Gao, Yunji; Zhou, Jingran; Gao, Shuai

doi:10.3390/app9163275

Cited by 13 publications

(6 citation statements)

References 24 publications

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Section: Resultssupporting

confidence: 90%

“…The decomposition product of APP chemically reacts with BN to promote the expansion of the residues. The maximum peak and valley of the DTG curves in Figure 9 demonstrate that the weight loss is the highest, consistent with the findings of Guo et al 40 The pyrolysis activation energy of the three coatings is consistent with Table 4. The pyrolysis activation energies E α of 300-380 C increase from 46.64 kJ mol À1 (N0) to 57.56 kJ mol À1 (N3), representing a 23.4% increase.…”

Section: Pyrolysis Kinetic Analysissupporting

confidence: 89%

“…According to the classical and modified Coats‐Redfern integral method, 2,40 the thermal stability of the three groups of samples is analyzed by analyzing the pyrolysis kinetics of the TG curves using formulas (), (), (), and ().

α goodbreak= \frac{m_{0} - m_{t}}{m_{0} - m_{f}},

f ((), α) goodbreak= {(1 - α)}^{n},

\frac{dα}{dT} goodbreak= \frac{A}{β} \exp ((), goodbreak- \frac{E_{α}}{RT}) f ((), α),

\ln ([], \frac{G (α)}{T^{2}}) goodbreak= \ln ((), \frac{italicAR}{β E_{α}}) goodbreak- \frac{E_{α}}{RT} .

…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

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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Section: Resultssupporting

confidence: 90%

Section: Pyrolysis Kinetic Analysissupporting

confidence: 89%

α goodbreak= \frac{m_{0} - m_{t}}{m_{0} - m_{f}},

f ((), α) goodbreak= {(1 - α)}^{n},

\frac{dα}{dT} goodbreak= \frac{A}{β} \exp ((), goodbreak- \frac{E_{α}}{RT}) f ((), α),

\ln ([], \frac{G (α)}{T^{2}}) goodbreak= \ln ((), \frac{italicAR}{β E_{α}}) goodbreak- \frac{E_{α}}{RT} .

…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

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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show abstract

“…G.Q. Zhu [123] et al synthesized a series of CNTs/CF/EP composites and investigated the effect of CNTs on the flame retardancy and mechanical properties of CF/EP composites. The results showed that the addition of CNTs could improve the flame retardancy and smoke suppression of CF/EP composites.…”

Section: Carbon Nanotubesmentioning

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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“…Carbon fiber epoxy resin composites (CFE composites) have been widely used in many fields [16][17][18][19][20]. Because of their low density, low thermal expansion, high strength and fatigue characteristics, their performance in many aspects is superior to that of traditional metal materials [2,[21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Laser Irradiation Behavior of Carbon Fiber Epoxy Resin Composites with Laminar Structure

Tian

et al. 2022

Crystals

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Laser attracts more attention and it could cause material failure by its high energy. Carbon fiber resin composites are widely used in aerospace vehicles experiencing dramatic damage to their surface if exposed to high-energy laser irradiation. The available studies on irradiation behavior are mainly focused on pulsed lasers and bulk composites, and investigations of thin laminar structures under continuous-wave laser irradiation have rarely been reported. In this study, the damage behavior of laminar carbon fiber epoxy resin composites (CFE composites) was studied. Using a threshold model of resin pyrolysis, CFE composite is observed to be damaged at 0.18 s when irradiated at 100 W/cm2, and if the laser power density is increased to 200 W/cm2 for 2 s, no resin remains on the fiber surface, which is now completely exposed. With an increase in power density and irradiation time, the ablation rate always shows an upward trend: the ablation region expands and the separation of layers in the interior appears, which can reach 0.01156 g/s when irradiated at 100 W/cm2 for 5 s. The damage mechanism of CFE composite was also revealed by the temperature evolution data, thermogravimetric analysis, and composition change.

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Flame Retardancy of Carbon Nanotubes Reinforced Carbon Fiber/Epoxy Resin Composites

Cited by 13 publications

References 24 publications

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

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

Recent Developments in the Flame-Retardant System of Epoxy Resin

Laser Irradiation Behavior of Carbon Fiber Epoxy Resin Composites with Laminar Structure

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