Preparation and characterization of mesophase formation of pyrolysis fuel oil-derived binder pitches for carbon composites

Yang, Jae-Yeon; Kim, Byoung‐Suhk; Park, Soo‐Jin; Rhee, Kyong Yop; Seo, Min‐Kang

doi:10.1016/j.compositesb.2019.01.102

Cited by 21 publications

(10 citation statements)

References 27 publications

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“…The mesophase binder pitches were prepared by a two-step heat treatment method in the batch-type reactor. The heat-treated binder pitches of the C/C composites had different softening points (SP) and quinoline insoluble (QI) contents (Table 2) [16]. The properties of mesophase binder pitches are summarized in Table 3.…”

Section: Preparation Of Mesophase Binder Pitchesmentioning

confidence: 99%

One-Step Densification of Carbon/Carbon Composites Impregnated with Pyrolysis Fuel Oil-Derived Mesophase Binder Pitches

Yang

Park

Kuk

et al. 2020

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Carbon/carbon (C/C) composites are conventionally manufactured by liquid-phase impregnation (LPI), in which the binder pitches and phenolic resins are impregnated into the composites, and by chemical vapor infiltration (CVI). However, CVI has certain limitations in that expensive gases, such as methane and propane, are used and a long reaction time is required. Therefore, LPI is more widely used, as it employs economical pitches. In this study, the effects of one-step preparation on mechanical properties of C/C composites impregnated with mesophase binder pitches and phenolic resins have been investigated. The C/C composites containing four types of 20 wt.% mesophase binder pitches had differences in softening point (SP) and quinoline insoluble (QI) contents. After conducting trials on mesophase formation using different heat treatment temperatures and times, the best density and mechanical properties of the C/C composites were achieved using the mesophase binder pitches with 170 °C SP. However, when SP 200 °C was used, the density of the C/C composites was not further improved. This is because the binder pitches were not properly impregnated into the composites due to the high viscosity and QI of the binder pitches. Furthermore, the C/C composites fabricated with 20 wt.% pitch 2 exhibited the highest mechanical properties.

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Section: Preparation Of Mesophase Binder Pitchesmentioning

confidence: 99%

One-Step Densification of Carbon/Carbon Composites Impregnated with Pyrolysis Fuel Oil-Derived Mesophase Binder Pitches

Yang

Park

Kuk

et al. 2020

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“…The calculated values were 9.43% (Na1), 10.59% (Na2), and 18.27% (Na3), indicating that the area occupied by voids increased with the addition of NaOH. In general, pitch coking occurs above 450 °C, , and NaOH decomposes above 500 °C . Therefore, when the pitch is activated with NaOH as an agent (850 °C), activation by NaOH proceeds following the coke orientation.…”

Section: Resultsmentioning

confidence: 99%

Effect of Porosity in Activated Carbon Supports for Silicon-Based Lithium-Ion Batteries (LIBs)

Choi

et al. 2023

ACS Omega

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Activated carbon supports for Si deposition with different porosities were prepared, and the effect of porosity on the electrochemical characteristics was investigated. The porosity of the support is a key parameter affecting the Si deposition mechanism and the stability of the electrode. In the Si deposition mechanism, as the porosity of activated carbon increases, the effect of particle size reduction due to the uniform dispersion of Si was confirmed. This implies that the porosity of activated carbon can affect the rate performance. However, excessively high porosity reduced the contact area between Si and activated carbon, resulting in poor electrode stability. Therefore, controlling the porosity of activated carbon is essential to improving the electrochemical characteristics.

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“…Co., Ltd., Seoul, Korea) and 4.8 g of F127 (poly(ethylene glycol)- block -poly(propylene glycol)- block -poly(ethylene glycol) diacrylate, Sigma-Aldrich, St. Louis, MO, USA) were added in mixed solvent (80 mL, 1:1 water/ethanol, v / v ) and stirred for 60 min to obtain clear solution. Then, 0.387 g of 37% HCl solution and different amounts (0, 10, 20 wt%) of mesophase pitch [ 17 ] were added to the above solution. The physical properties and elemental composition of the mesophase pitch used in this work are presented in Table 1 .…”

Section: Methodsmentioning

confidence: 99%

“…In this case, the pitch particles were self-assembled into the template to form mesoporous composites. Finally, the mesoporous carbon was derived after the elimination of the template [ 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

A Facile Fabrication of Ordered Mesoporous Carbons Derived from Phenolic Resin and Mesophase Pitch via a Self-Assembly Method

Yang

Kuk

et al. 2022

Nanomaterials

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Ordered and disordered mesoporous structures were synthesized by a self-assembly method using a mixture of phenolic resin and petroleum-based mesophase pitch as the starting materials, amphiphilic triblock copolymer F127 as a soft template, hydrochloric acid as a catalyst, and distilled water as a solvent. Then, mesoporous carbons were obtained via autoclave method at low temperature (60 °C) and then carbonization at a relatively low temperature (600 °C), respectively. X-ray diffraction (XRD), small-angle X-ray scattering (SAXS), and transmission electron microscopy (TEM) analyses revealed that the porous carbons with a mesophase pitch content of approximately 10 wt% showed a highly ordered hexagonal mesostructure with a highly uniform pore size of ca. 5.0 nm. In addition, the mesoporous carbons prepared by self-assembly and low-temperature autoclave methods exhibited the amorphous or crystalline carbon structures with higher specific surface area (SSA) of 756 m2/s and pore volume of 0.63 cm3/g, depending on the synthesis method. As a result, mesoporous carbons having a high SSA were successfully prepared by changing the mixing ratio of mesophase pitch and phenolic resin. The electrochemical properties of as-obtained mesoporous carbon materials were investigated. Further, the OMC-meso-10 electrode delivered the maximum SC of about 241 F/g at an applied current density of 1 A/g, which was higher than those of the MC-10 (~104 F/g) and OMC-20 (~115 F/g).

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Preparation and characterization of mesophase formation of pyrolysis fuel oil-derived binder pitches for carbon composites

Cited by 21 publications

References 27 publications

One-Step Densification of Carbon/Carbon Composites Impregnated with Pyrolysis Fuel Oil-Derived Mesophase Binder Pitches

One-Step Densification of Carbon/Carbon Composites Impregnated with Pyrolysis Fuel Oil-Derived Mesophase Binder Pitches

Effect of Porosity in Activated Carbon Supports for Silicon-Based Lithium-Ion Batteries (LIBs)

A Facile Fabrication of Ordered Mesoporous Carbons Derived from Phenolic Resin and Mesophase Pitch via a Self-Assembly Method

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