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›› 2009, Vol. 43 ›› Issue (4): 33-37.

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Study on the Curing Characteristics and Kinetics of Bamboo Liquefaction Phenolic Resin

FU Shen-yuan1,2, LUAN Fu-you2, CHENG Shu-na2, ZHAO Guang-jie1   

  1. 1. College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China;2. College of Engineering, Zhejiang Forestry University, Lin'an 311300, China
  • Received:2009-02-24 Revised:1900-01-01 Online:2009-07-30 Published:2009-07-30

Abstract: The curing reaction process of bamboo liquefaction phenolic resin with different molar ratio was studied by non-isothermal differential scanning calorimetry (DSC). The Kissinger equation was used to study curing kinetics of bamboo liquefaction phenolic resin based on the DSC curves at different heating rates in the temperature range of 25~300 ℃. The results showed that: with the increase of formaldehyde molar ratio of phenol to formaldehyde (1:1.3,1:1.6,1:1.8), the apparent activation energy was 64.60,58.36 and 57.12 kJ/mol, respectively, which gradually decreased during the curing process of bamboo liquefaction phenolic resin. The curing reaction model of bamboo liquefaction phenolic resin in three different types of molar ratio is da/dt=1.30×105e-64600/RT(1-a)0.9054, da/dt=1.37×105e-58360/RT(1-a)0.8971 and da/dt=1.44×105e-57120/RT(1-a)0.8959, respectively; with the increase of formaldehyde molar ratio of phenol to formaldehyde, the static (β=0℃/min)characteristics curing temperature Ti,Tp and Tf from extrapolation all decreased. The research result agree with the value order of the bamboo liquefaction phenolic resin curing reaction apparent activation energy.

Key words: DSC, bamboo liquefaction phenolic resin, curing characteristics, curing kinetics

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