Novel carbon foam composites reinforced with carbon fiber felt developed from inexpensive pitch precursor matrix

Sharma, Shishobhan; Patel, Rasmika H.

doi:10.1177/0021998320918353

Cited by 11 publications

(3 citation statements)

References 21 publications

(25 reference statements)

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“…They exhibit good values of porosity (>50%), while their flexural strength ( σ = 14.65 MPa) is better than those reported in the literature for carbon foams reinforced with 11 wt% chopped carbon fibres ( σ = 9 MPa) 27 . New technological applications are emerging that exploit the porous structure of carbon composites, like in thermal and/or electric energy storage, microwave absorption and so forth, 28,29 where a porous structure or even a stable carbon‐reticulated structure is preferable to a solid one.…”

Section: Resultsmentioning

confidence: 96%

“…In the same direction, carbon foams reinforced with a low volume fraction of chopped carbon fibres (to increase their strength and toughness) have been proposed as alternatives for some high‐cost C/C composite applications, 27 where a porous structure or even a stable carbon‐reticulated structure is preferable to a solid one. Such applications include containers for active materials for thermal energy storage, electrodes of electrochemical devices and electric energy storage, adsorbents for large molecules, microwave absorption and so forth 28,29 …”

Section: Introductionmentioning

confidence: 99%

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Performance of novolac resin‐ and resole resin‐based carbon/carbon composites in relation to their fabrication conditions

Georgiou,

Kyriakopoulou,

Zoumpoulakis

2024

Polymer International

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The demands of cost‐driven industrial applications can be satisfied by manufacturing composites with a low volume fraction of carbon fibres as phenolic carbon fibre‐reinforced composites and C/C composites, both with acceptable performances, for low‐ or high‐temperature applications, respectively. Polymeric composites reinforced with a low volume fraction (7.5% v/v) of carbon fibres were fabricated using laboratory‐produced phenolic resins, novolac (N) and resole (R), as matrices after different curing/post‐curing temperature profiles. By optimising the manufacturing conditions, the N‐based polymeric composites exhibited higher flexural strength, whereas the R‐based composites showed higher shear strength. C/C composites, namely N‐based and R‐based, were manufactured by pyrolysis of the previous polymeric composites up to 1000 °C. The pyrolysed composites were then densified by impregnation with an appropriate resin solution, followed by curing and new pyrolysis, and particularly by employing 1 up to 4 consecutive cycles of ‘impregnation‐curing / pyrolysis’. Weight changes resulting from the impregnation‐curing and pyrolysis stages were determined. The curing of both resins was verified by FTIR. The apparent density and X‐ray diffraction data of the C/C composites were used to calculate their total percent porosities. The morphology and elemental analyses of C/C composites at their failure region (after flexural testing) were examined by SEM/EDS analyses. In comparison to N‐based C/C composites, R‐based ones exhibited: higher shear strength, lower flexural strength, higher Shore D hardness, slightly higher surface conductivity, and lower volume conductivity. The optimum conditions for the manufacture of C/C composites were achieved by applying two consecutive cycles of ‘pyrolysis‐impregnation‐pyrolysis’ to the polymeric composites.This article is protected by copyright. All rights reserved.

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Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Performance of novolac resin‐ and resole resin‐based carbon/carbon composites in relation to their fabrication conditions

Georgiou,

Kyriakopoulou,

Zoumpoulakis

2024

Polymer International

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“…The formation of −CH 2 /CH 3 and −OH functional groups during low-temperature oxidation of coal was strongly suppressed. Previous studies have proved that foam has an irreplaceable and excellent effect in preventing the spontaneous combustion of coal. − However, the foam or gel commonly used in coal mines still has disadvantages such as poor fire-extinguishing effect, high material cost, poor stability, harm to human health, and damage to the ecological environment . In particular, there are potential fire sources and high fire source control problems in fully mechanized caving goaves and roadway high-release areas.…”

Section: Introductionmentioning

confidence: 99%

Novel PFA-Based Inorganic Three-Phase Foam for Inhibiting Coal Spontaneous Combustion

Chen

Jia

et al. 2023

ACS Omega

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Fire accidents caused by coal spontaneous combustion usually lead to a large loss of coal resources and casualties. Not only that, the greenhouse effect is polluted while the environment is polluted. At present, the commonly used fire-extinguishing materials such as water, inhibitors, and organic foams have the disadvantages of poor stability and short fire-extinguishing cycles. It is difficult to effectively suppress coal spontaneous combustion and quickly extinguish the fire for a long time. To suppress the spontaneous combustion of coal, the research team proposed an inorganic three-phase foam with a high foam expansion rate, good cohesiveness, and excellent stability. In the formulation, pulverized fly ash (PFA) is used as the matrix, sodium dodecyl benzene sulfonate (SDBS) and α-olefin sulfonate (AOS) are used as foaming agents, curdlan is used as the foam stabilizer, and sodium silicate is the binder. The compound foaming agent with the best performance is optimized, through the two-group compounding test. The composite foaming agent’s optimal compound ratio is SDBS/AOS (3:2). The optimal ratio of inorganic three-phase foam (ITPF) components was obtained through the control variable method experiment. The water–cement ratio is 5:1, the composite foaming agent is 0.2%, the curdlan is 0.5%, and the sodium silicate is 1.6%. In addition, it has been determined by experiments that ITPF has the strongest foaming ability when the pH value is 9 and the temperature is 60 °C. The fire-extinguishing performance of the new material ITPF was investigated by thermogravimetry and coal spontaneous combustion tendency test. It has been observed that the new material has the effect of cooling down and isolating coal from contact with oxygen. The results show that the new material ITPF has the potential to prevent coal spontaneous combustion.

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Research on fire retardant lignin phenolic carbon foam with preferable smoke suppression performance

Zhou,

Liu,

et al. 2023

Chemical Engineering Science

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Novel carbon foam composites reinforced with carbon fiber felt developed from inexpensive pitch precursor matrix

Cited by 11 publications

References 21 publications

Performance of novolac resin‐ and resole resin‐based carbon/carbon composites in relation to their fabrication conditions

Performance of novolac resin‐ and resole resin‐based carbon/carbon composites in relation to their fabrication conditions

Novel PFA-Based Inorganic Three-Phase Foam for Inhibiting Coal Spontaneous Combustion

Research on fire retardant lignin phenolic carbon foam with preferable smoke suppression performance

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