Preparation and pyrolysis behavior of modified coal tar pitch as C/C composites matrix precursor

Dang, Alei; Li, Hao; Li, Tiehu; Zhao, Tingkai; Xiong, Chuanyin; Zhuang, Qiang; Shang, Yudong; Chen, Xudong; Ji, Xianglin

doi:10.1016/j.jaap.2016.04.002

Cited by 31 publications

(9 citation statements)

References 21 publications

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“…Thus, in order to meet the foaming conditions, in this case, the PR was chosen as additive to reduce the viscosity of precursor in the presence of catalyst MBSA. The process of co-carbonization reaction of PR and raw CTP was mentioned in our previous work [37,38]. Here, the content of catalyst MBSA in the reaction system was invariant (1 wt%) for all samples.…”

Section: Methodsmentioning

confidence: 99%

Effect of Phenolic Resin on Micropores Development in Carbon Foam with High Performance

et al. 2019

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A novel high-performance carbon foam (CF) was fabricated through the addition of phenolic resin (PR) into a coal tar pitch (CTP) based precursor. The effects of mass fraction of a PR additive on the crystalline structures, morphologies, compressive strength (σ) and thermal conductivity (λ) of resultant CF material were investigated systematically. Characterization showed a strong dependence of CF’s performance from the composition and optical texture of the precursor, which were mainly depending on the polycondensation and polymerization reactions between PR and raw CTP. Comparing with the strength of pristine CF at 6.5 MPa, the σ of mCF-9 (13.1 MPa) was remarkably enhanced by 100.1%. However, the λ of mCF-9 substantially reduced to 0.9 m−1K−1 compared with 18.2 W m−1K−1 of pristine CF. Thus, this modification strategy to produce microporous CF materials from raw CTP provides a new protocol for the fabrication of high-performance carbon based materials.

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Section: Methodsmentioning

confidence: 99%

Effect of Phenolic Resin on Micropores Development in Carbon Foam with High Performance

et al. 2019

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“…It only explains a minor part of the weight loss which is due to the gasification of carbon material. 60 This usually ends between 500 and 600°C depending on the precursor. Between 350 and 450°C, polycyclic hydrocarbons of about 10 cycles face condensation reaction and their size increase 61,62 .…”

Section: B Pitch As Precursormentioning

confidence: 99%

“…Figure 9). 60 Figure 9: Phase formed during thermal treatment of pitch 63,62 From temperature over 700 °C and in all cases at 900 °C, aromatics are the mains molecules. Further temperature increase will mainly improve crystallinity, instead of aromaticity.…”

Section: B Pitch As Precursormentioning

confidence: 99%

“…Further temperature increase will mainly improve crystallinity, instead of aromaticity. 60 The pitch structure contains aliphatic and aromatic compounds in various concentration. The C-C and C-H bond breaking during aromatization requires energy (420 kJ/mol to break an aromatic C-H bond and 325 kJ/mol for a C-H bond in methyl group).…”

Section: B Pitch As Precursormentioning

confidence: 99%

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Nano silicon carbon hybrid particles and composites for batteries: Fundamentals, properties and applications

Oudart¹,

Guicheteau²,

Perrin³

et al. 2022

Silicon-Based Hybrid Nanoparticles

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“…Heat resistance and the operating temperatures of polymer-based composites are limited by the heat resistance of matrix polymer. Carbon matrices obtained by pyrolysis of various polymer binders [13][14][15], coal tar [16][17][18] and petroleum [19][20][21] pitches have exceptionally high heat resistance. A direct approach in getting carbon matrices via classical carbonization is the rapid implementation of the pyrolysis process, which ends with the formation of char at temperatures of about 500-550 • C, followed by the formation of a carbon matrix at temperatures of 900-1700 • C. It is known that thermal degradation results in an increase in the given polymer material's thermal stability; however, at the same time, thermal degradation results in a decrease in the strength and deformation characteristics of materials [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Low-Temperature Carbonized Elastomer-Based Composites Filled with Silicon Carbide

et al. 2020

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Thermally stable composites obtained by the low-temperature carbonization of an elastomeric matrix filled with hard dispersed silicon carbide particles were obtained and investigated. Evolution of the microstructure and of mechanical and thermal characteristics of composites during thermal degradation and carbonization processes in a wide range of filling from 0 to 450 parts per hundred rubber was studied. For highly filled composites, the compressive strength values were found to be more than 200 MPa; Young’s modulus was more than 15 GPa. The thermal conductivity coefficient of composites was up to 1.6 W/(m·K), and this magnitude varied slightly in the temperature range of 25–300 °C. Coupled with the high thermal stability of the composites, the observed properties make it possible to consider using such composites as strained friction units instead of reinforced polymers.

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Preparation and pyrolysis behavior of modified coal tar pitch as C/C composites matrix precursor

Cited by 31 publications

References 21 publications

Effect of Phenolic Resin on Micropores Development in Carbon Foam with High Performance

Effect of Phenolic Resin on Micropores Development in Carbon Foam with High Performance

Nano silicon carbon hybrid particles and composites for batteries: Fundamentals, properties and applications

Low-Temperature Carbonized Elastomer-Based Composites Filled with Silicon Carbide

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