Raman spectroscopic investigation of the woodceramics derived from carbonized tobacco stems/phenolic resin composite

Zhang, Libo; Li, Wei; Peng, Jinhui; Li, Ning; Pu, Juan; Zhang, Shimin; Guo, Shenghui

doi:10.1016/j.matdes.2008.04.002

Cited by 12 publications

(8 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This kind of microstructure is in consistent with the findings from Zhang et al and Qian et al [19,20]. Figure 2b–d present SEM images of woodceramics at carbonization temperatures of 650, 800 and 1000 °C, respectively.…”

Section: Resultssupporting

confidence: 91%

“…Figure 3d shows that phenolic resin can also fill in the voids of wood. Zhang et al [19] also found that certain amounts of phenolic resin are able to block the porous structures of carbonized tobacco stems. As the content of PF resin increased, glassy carbon left from the carbonization of PF resin was observed in wood axial tracheid and ray cells.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Carbonization Temperature and Component Ratio on Electromagnetic Interference Shielding Effectiveness of Woodceramics

Tao

2016

Materials

View full text Add to dashboard Cite

Woodceramics were fabricated in a vacuum through carbonization of wood powder impregnated with phenol formaldehyde (PF) resin. The effects of carbonization temperature and mass ratio of wood/resin on electromagnetic interference (EMI) shielding effectiveness (SE) and morphology of woodceramics were explored. The PF resin made wood cell walls have the characteristics of glassy carbon. Wood axial tracheid and ray cells were filled with more glassy carbon by increasing addition of PF resin. Moreover, the increase of carbonization temperature was beneficial to improving SE. Woodceramics (mass ratio 1:1) obtained at 1000 °C presented a medium SE level between 30 MHz and 1.5 GHz.

show abstract

Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Effects of Carbonization Temperature and Component Ratio on Electromagnetic Interference Shielding Effectiveness of Woodceramics

Tao

2016

Materials

View full text Add to dashboard Cite

show abstract

“…At the same time, for all the samples the bandwidth of the G band was narrower than that of the D band. Furthermore, the bandwidth of the D-band was larger in the case of the samples prepared at lower concentration compared to that of the specimens prepared at higher concentration, indicating that the ordering degree of the former samples was lower than that of the latter samples (33). …”

Section: Influence Of Iron Concentration On Structural Change Of Fir-mentioning

confidence: 84%

A Structural Evaluation of Fir Powder in the Graphitization Process with Iron Oxide at a Low Temperature

Tan

Shi

2012

Fullerenes, Nanotubes and Carbon Nanostructures

View full text Add to dashboard Cite

Catalytic graphitization of fir powder with iron oxide was investigated to fabricate high crystalline carbon between 900 • C and 1600 • C under nitrogen atmosphere. The effects of the catalyst concentration and the heat treatment temperature on the graphitization process of fir carbon were investigated, and the structural evaluation in the graphitization process was analyzed by X-ray diffraction (XRD), high-resolution transmission microscopy (HRTEM), and laser Raman (LR). XRD analysis shows that the rate of graphitization increased with increasing iron concentration and heat treatment temperature, and the turbostratic and graphitic carbon were formed due to the different catalytic graphitization mechanism of iron and iron carbide at different heat treatment temperatures. HRTEM images indicate that the graphitic carbon materials possessed a high crystallinity with coil morphology. LR analysis shows that the I D /I G value decreased from 1.61 to 0.37 with increasing temperature and from 1.4 to 0.37 with increasing iron concentration. The key factor to affect graphitization behavior of fir powder was the thermal treatment temperature compared with the catalyst concentration.

show abstract

“…However, the 002 and 10l diffraction peaks are broad, which suggest the phrse of liquefied corncob woodceramics has been changed, but it has amorphous state of partial graphitization with half crystalline structure. The graphitization degree can be estimated by the d002 value 15 . Generally, d002 value will reduce while the quantity of graphite crystallite increase and the coherent length of the graphite crystallite in the basal plane and the crystallite size along the c-axis enlarge.…”

Section: Ig 2 Thermogravimetric Curves Of Woodceramics With Differementioning

confidence: 99%

Characterization of Woodceramics Prepared from Liquefied Corncob and Poplar Powder

Sun¹,

Yu²,

Wang³

2013

Asian J. Chem.

View full text Add to dashboard Cite

Woodceramics are new porous carbonic materials that can be produced using renewable resources and environmental wastes 1. These materials have several advantages such as lightweight, high specific strength, good friction properties and excellent thermal stability and so on. Woodceramics is widely being used in the fabrication of materials 2-4 , such as the woodbased high-temperature filter and catalytic carrier 5,6. Currently, the typical method of preparing woodceramics is to impregnate a wooden material (bulk wood, mediumdensity fiberboard and wood powder, etc.) with thermosetting resin (phenol-formaldehyde or epoxy), which are subsequently carbonized at high temperature. A bamboo-based wood ceramics was prepared from bamboo powder and epoxy resin 7 and a basswood powder woodceramics was obtained through phenol-formaldehyde resin impregnation 8. Ozao et al. 9 discussed the odorless woodceramics made from chicken wastes, whereas a laminated structure woodceramics had been studied by Sun et al. 10. Aside from consuming a considerable amount of industrial chemicals, these methods also pollute the environment because of their free formaldehyde and volatile organic compound contents. Corncob is a kind of agricultural residue. Many corncobs, which also serve as waste biomass resources, are discarded in the field or used as fuel in northern China. At present, there is still no report about the preparation of woodceramics from liquefied corncob (LC). In the present study, a corncob is liquefied and reused as biomass waste instead of phenol

show abstract

Raman spectroscopic investigation of the woodceramics derived from carbonized tobacco stems/phenolic resin composite

Cited by 12 publications

References 30 publications

Effects of Carbonization Temperature and Component Ratio on Electromagnetic Interference Shielding Effectiveness of Woodceramics

Effects of Carbonization Temperature and Component Ratio on Electromagnetic Interference Shielding Effectiveness of Woodceramics

A Structural Evaluation of Fir Powder in the Graphitization Process with Iron Oxide at a Low Temperature

Characterization of Woodceramics Prepared from Liquefied Corncob and Poplar Powder

Contact Info

Product

Resources

About