Effects of Sintering Conditions on Microstructure Changes of Wood-Ceramics Impregnated with Low-Molecular-Weight Phenol-Formaldehyde Resin


  • De-lin Sun
  • Xian-chun Yu
  • Wen-jin Liu
  • De-bin Sun
  • De-tao Liu


Wood-ceramics, low-molecular-weight PF resin, sintering conditions, microstructure change


The microstructure of a new type of wood-ceramics made from poplar fiber impregnated with low-molecular-weight phenol-formaldehyde (PF) resin under atmospheric pressure was studied under changing sintering conditions. X-ray diffraction analysis indicated that the d002 value was reduced with increasing sintering temperature. The wood-ceramic structure also became more uniform and orderly, but still was nongraphitic carbon. Scanning electron microscopy showed that the pore structure partially retained the microstructural characteristics of wood fiber, and a graphitic phase was formed with increased sintering temperature and longer holding time. All analyses showed PF resin molecular weight had little impact on phase composition and graphitization. The apparent specific gravity of woodceramics increased as sintering temperature increased to 1200°C but decreased as temperature rose further. Specific surface area and apparent porosity were increased with higher sintering temperature, greater sintering rates, and longer holding times. In addition, specific surface area was also affected by the molecular weight of PF resin and the impregnation method, in which low-molecular-weight resin increased the specific surface area.


Akagaki T, Hokkirgawa K, Okabe T (1999) Friction and wear of wood-ceramics under oil and water lubricated sliding contacts. Ceram Trans 6(3):197 - 204.nFujimoto H (2003) Theorectical x-ray scattering intensity of carbons with turbostratic stacking and AB stacking structures. Carbon 41(8):1585 - 1592.nHirose T, Fan TX, Okabe T (2002a) Effect of carbonizing speed on the property changes of wood-ceramics impregnated with liquefacient wood. Mater Lett 52(3):229 - 233.nHirose T, Fujino T, Fan TX (2002b) Effect of carbonization temperature on the structural changes of woodceramics impregnated with liquefied wood. Carbon 40(5):761-765.nHirose T, Zhao BY, Okabe T (2002c) Effect of carbonization temperature on the basic properties of wood ceramics made from carbonized bamboo fiber and liquefied wood. Mater Sci 37(16):3453 - 3458.nHou GG, Jin ZH, Qian JP (2007) Effect of holding time on the basic properties of biomorphic SiC ceramic derived from beech wood. Mater Sci Eng A-Struct 452 - 453:278 - 283.nIzuka H, Fushitani M, Okabe T (1999) Mechanical properties of wood-ceramics: A porous carbon material. J Porous Mater 6(3):175 - 184.nKano M, Momota M, Okabe T (1997) Specific heat capacity of new porous carbon materials: Wood-ceramics. Thermochim Acta 292(1 - 2):175 - 177.nKercher AK, Nagle DC (2003) Microstructural evolution during charcoal carbonization by x-ray diffraction analysis. Carbon 41(1):15 - 27.nKim YJ, Kim ML, Yun CH (2004) Comparative study of carbon dioxide and nitrogen atmospheric effects on the chemical structure changes during pyrolysis of phenol-formaldehyde spheres. J Colloid Interface Sci 274(2):555 - 562.nLi J, Li SJ (2006) Pyrolysis of medium density fiberboard impregnated with phenol-formaldehyde resin. Wood Sci 52(4):331 - 336.nQian JM, Jin ZH, Wang JP (2004a) Structure and basic properties of wood-ceramics made from phenolic resin-basswood powder composite. Mater Sci Eng 368 (A):71 - 79.nQian JM, Jin ZH, Wang JP (2004b) Study on structural changes during preparing wood-ceramics from phenolic resin/basswood powder composite. Acta Mater 21(4):18 - 23.nQian JM, Wang JP, Jin ZH (2004c) Wood-ceramics prepared from basswood powder and phenolic resin. J Inorg Mater 19(2):335 - 340.nTao YB, Liu YX (2006) Study on the wood-ceramics made from carbonized phenolic resin. Forest Mach Wood Mach 34(6):19 - 21.nZhang D, Sun BH, Fan TX (2004) Preparation and analysis on microstructure of morph-genetic materials. Sci China Ser E 34(7):721 - 729.nZhang D, Xie XQ, Fan TX (2002) Morphology and damping characteristics of wood-ceramics. Mater Sci Eng 37(20):4457 - 4463.n






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