Preparation of pitch precursor with excellent spinnability for general-purpose carbon fibre using coal tar pitch as raw material

2022 ◽  
Author(s):  
Jinchang Liu ◽  
Chenyang Shen ◽  
Lujie Huang ◽  
Tinghao Fang ◽  
Yaping Li ◽  
...  
Keyword(s):  
Carbon Fibre ◽  
Coal Tar ◽  
General Purpose ◽  
Raw Material ◽  
Coal Tar Pitch

scholarly journals Preparation of Isotropic Carbon Fibers from Kerosene-Purified Coal Tar Pitch by Co-Carbonization with Pyrolysis Fuel Oil

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6280
Author(s):  
Seon Ho Lee ◽  
Song Mi Lee ◽  
Seungjoo Park ◽  
Seong-Ho Yoon ◽  
Haksoo Han ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Low Cost ◽  
Coal Tar ◽  
Average Diameter ◽  
Extraction Process ◽  
General Purpose ◽  
Fuel Oil ◽  
Coal Tar Pitch ◽  
Pyrolysis Fuel Oil ◽  
Isotropic Carbon

An inexpensive and general-purpose carbon fiber was prepared using coal tar pitch. In contrast to the solvent extraction process employing expensive solvents, a low-cost centrifugal separation method facilitated the reduction of loss due to the pitch purification and an overall yield increase. The coal tar pitch purified by centrifugation and subsequently co-carbonized with pyrolysis fuel oil improved in spinnability. Moreover, the resulting spinnable pitch had a softening point of 250 °C. The obtained carbon fibers were heat-treated at 1000 °C for 5 min, resulting in a tensile strength of approximately 1000 MPa and an average diameter of 9 μm. In this study, we present an effective method for obtaining low-cost general-purpose isotropic carbon fibers.

scholarly journals Effect of Residence Time of Graphitisation on Thermal Conductivity of Molded Graphite

2010 ◽  
Vol 1 (1) ◽  
pp. 43-52
Author(s):  
Pedy Artsanti ◽  
Yateman Arryanto ◽  
Kusnanto Kusnanto
Keyword(s):  
Thermal Conductivity ◽  
Residence Time ◽  
Petroleum Coke ◽  
Coal Tar ◽  
Argon Atmosphere ◽  
Raw Material ◽  
Coal Tar Pitch ◽  
Graphitization Degree

The effect of residence time of graphitisation on thermal conductivity of molded graphite has been examined. The examination has been conducted by varying residence time of graphitisation of molded carbon with petroleum coke as raw material and coal tar pitch. Graphitisation has been conducted by heating molded graphite at 2500 °C in argon atmosphere with residention time of 10, 30 and 90 minutes. Graphitisation degree, density, shrinking mass and porosity of molded graphite were examined and so was its thermal conductivity. The result showed that the decrease of porosity and the increase of graphitisation degree due to the increasing of residention time of graphitisation will increase the thermal conductivity of graphite. Molded graphite graphitisized with residence time for 90 minutes residention time gave thermal conductivity of 2.134 Watt/mK and graphitization degree 0.718.

scholarly journals Preparation and Properties of Graphite/Antimony Composites Based on Coal Tar Pitch

2017 ◽  
Vol 26 (2) ◽  
pp. 096369351702600
Author(s):  
Qili Wang ◽  
Min He ◽  
Xiaochuan Li ◽  
Li Hao
Keyword(s):  
Friction Coefficient ◽  
Mechanical Performance ◽  
Coal Tar ◽  
Physical Property ◽  
Raw Material ◽  
Coal Tar Pitch ◽  
Shore Hardness ◽  
Experimental Conditions ◽  
Rotating Speed ◽  
Average Value

Coal tar pitch is used as the raw material to prepare graphite/antimony composites, of which the mechanical performance, microstructure, element composition and tribological performance are investigated. Results indicate that the composite density, shore hardness, flexural strength, compression strength and porosity are 2.38g/cm3,103.10Hs,91.65MPa,290.5MPa, and 0.65% respectively, representing physical property improvement of 17.65%-28.75%. In addition to C, the major composite elements are Sb, Si, Al and S, with relative amounts of 87.8%, 4.5%, 3.1% and 2.4%, respectively. Under experimental conditions, the average value friction coefficient is 0.120–0.158. The friction coefficient ranges from 0.08 to 0.149, when the load is 10–48MPa.the friction coefficient decreases gradually as the load increases. The average friction coefficient is equal to 0.141 and 0.114 when the rotating speed is equal to 200r/min and 500r/min, respectively; the friction coefficients declines gradually as rotating speed increases.

Reduction of Benzo[A]Pyrene in Coal Tar Pitch with Cross Linking Monomers

2013 ◽  
Vol 663 ◽  
pp. 1017-1022 ◽  
Author(s):  
De Min He ◽  
Jun Gu ◽  
Yang Liu Huang ◽  
Di Wu ◽  
Shu Chang Zhao ◽  
...  
Keyword(s):  
Coal Tar ◽  
Raw Material ◽  
Coal Tar Pitch ◽  
Cross Linking ◽  
Modified Pitch

This paper investigated the reduction of benzo[a]pyrene (BaP) in coal tar pitch by modifying with 1,4-Benzenedimethanol, Divinylbenzene and Trioxymethylene. Coal tar pitch was modified by these Cross linking monomers respectively. The content of BaP in product was determined. The results indicated that 48.28% BaP was reduced in modified pitch with 12% divinylbenzene at 130°C for 3 hours; 66.38% BaP was reduced in modified pitch with 25%1, 4-Benzenedimethanol at 120°C for 1 hour; Furthermore, 92.24% BaP was reduced in modified pitch with 25% trioxymethylene at 110°C for 0.5~1h. Pure BaP was blended with trioxymethylene. The C13 N.M.R.spectras of raw material and product were determined, the mechanism probably including C-alkylation.

scholarly journals Evolution in the formation of graphene nanocapsules from coal tar pitch

2020 ◽  
Vol 7 (4) ◽  
pp. 816-824
Author(s):  
D. M. Puente-Siller ◽  
A. E. García-Castillo ◽  
J. A. López-Corpus ◽  
A. Perea-Garduño
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Coal Tar ◽  
Raw Material ◽  
Coal Tar Pitch ◽  
Activation Technique ◽  
Working Temperature ◽  
In Situ Activation ◽  
Scanning Transmission ◽  
Scanning Electron

AbstractIt has recently been reported that coal tar pitch (CTP) can be utilised as raw material for the production of graphene nanocapsules (GNCs) because it is formed by a great quantity of aromatic organic compounds (which promote the rearrangement of double bonds by a process of polymerisation). Due to the importance of graphene and the search for a non-expensive methodology to produce it, this work used CTP to synthesise GNCs using an in situ activation technique at low temperatures and evaluating the effect of the working temperature on the formation of such nanostructures. In other words, analysing the form of the particle as the temperature rises from 600 to 900 °C. As result of the experimentation, powders were obtained and analysed by the techniques of X-Ray Diffraction, Raman Spectroscopy and Microscopy, employing Field Emission Scanning Electron Microscopy by normal mode as well as by Scanning Transmission Electron Microscopy and a High-Resolution Scanning Electron Microscopy. The results show that working with temperatures between 800 and 850 °C promotes the production of GNCs, considering that their size reduces as the working temperature rises.

Mesophase from electrode-binder coal-tar pitch: An appraisal of structural techniques

1981 ◽  
Vol 31 (1) ◽  
pp. 535-540 ◽  
Author(s):  
John A. G. Drake ◽  
Derry W. Jones ◽  
Clifford R. Mason
Keyword(s):  
Coal Tar ◽  
Coal Tar Pitch ◽  
Electrode Binder
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