Influence of carbon-fiber felts on the development of carbon–carbon composites

Ko, Tse‐Hao; Kuo, Wen‐Shyong; Chang, Ying-Huang

doi:10.1016/s1359-835x(03)00053-8

Cited by 19 publications

(6 citation statements)

References 24 publications

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“…However, the C/C composite impregnated with pitch 2, which has a SP of 168 • C, exhibits the highest density (1.45 g/cm 3 ) among all the mesophase binder pitches. As the mesophase binder pitches undergo liquid-phase carbonization and pores are generated within the composites, the mesophase binder pitches fully infiltrate the composites, thus increasing their densities [21][22][23]. Figure 2 shows a schematic of the pore filling mechanism associated with liquid impregnation using mesophase binder pitches and phenolic resins.…”

Section: Morphologymentioning

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: Morphologymentioning

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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“…Understanding the properties of preforms is the fi rst step to make better composites, because preforms are the framework of composites and they provide load and heat transfer [10][11][12] . In particular, the thermal conductivity of preforms significantly affects the heat transfer and other thermal properties of composites 13 .…”

Section: Introductionmentioning

confidence: 99%

Thermal Conductivity of Needle Punched Preforms made of Carbon and OxiPAN Fibres

Lee

Kang

2005

Polymers and Polymer Composites

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The thermal conductivity of preforms made by a needle punching technique has been measured using a tailor-made apparatus. Measurements were carried out in the absence of the matrix resin to find the thermal conductivity of the preforms themselves. The preforms were made with a variety of material compositions and textile structures, and various needle punching densities. Preforms made of woven fabric showed higher thermal conductivity than preforms of felt fabric. Needle punching density had a strong influence on the thermal conductivity. Increasing the needle punching density decreased the thermal conductivity along the in-plane direction, and increased it along through-the-thickness direction. The thermal conductivity in the through-the-thickness direction was about 30% to 50% of that in the in-plane direction, but the differences between the two directions decreased with increasing needle punching. An analytical model for thermal conduction in both directions was devised, and the results were consistent with those of experiments. The thermal conductivity of the rearranged fibres in the punching hole was estimated by parametric studies.

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“…Recently, carbon nanotubes (CNTs) have been used as reinforcements in polymer matrices to improve their mechanical and electrical properties [2][3][4]. Although some experimental data indicated the strength enhancement by the presence of CNTs in the polymer matrix [1,5,6], no strength enhancement or limited enhancement was observed in other works [7][8][9]. ere are two important factors that might limit the applications of this reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Effect of Carbon Nanotubes on the Microstructure and Thermal Property of Phenolic/Graphite Composite

Vu¹,

Le²,

Nguyen

2018

International Journal of Chemical Engineering

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In this work, composites based on phenolic resin (P), graphite powder (G), carbon fibers (CFs), and carbon nanotubes (CNTs) were prepared by using hot compression molding. The effect of CNTs on the microstructure and thermal property of these composites was investigated. FESEM analysis indicated that the surface structure of phenolic/graphite composites became more dense and homogeneous with the presence of CNTs. The carbonization behavior of composites was characterized by using thermal gravimetric analyses (TGAs). TGA data showed that the presence of CNTs in phenolic/graphite composites enhanced their thermal stability, by increasing the temperature of maximum weight loss rate (Tm) during pyrolysis and decreasing the weight loss after pyrolysis. In addition, incorporation of CNTs into phenolic/graphite composites reduced significantly their open porosity.

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Influence of carbon-fiber felts on the development of carbon–carbon composites

Cited by 19 publications

References 24 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

Thermal Conductivity of Needle Punched Preforms made of Carbon and OxiPAN Fibres

Effect of Carbon Nanotubes on the Microstructure and Thermal Property of Phenolic/Graphite Composite

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