China Plastics ›› 2008, Vol. 22 ›› Issue (08): 22-25 .DOI: 10.19491/j.issn.1001-9278.2008.08.005

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Curing Kinetics of Thermoplastic Novolac-type Lignin Phenolic Resin

HU Li一hong,ZHOU Yong-hong,LIU Hong-jun,ZHANG Meng,LIU Xin   

  1. Institute of Chemical Industry of Forest Products, C;hinase Academic of Forestry, Key and Open Lab on Forest Chemical Engineering, State Forestry Administration, Nanjing 210042,China
  • Received:2008-05-09 Revised:1900-01-01 Online:2008-08-26 Published:2008-08-26

Abstract: Differential scanning calorimetry (DSC) was used to study the curing behavior of lignin phe-nolic resin ( LPF) at heating rates of 5 , 10 , 15,and 20℃/min between 25℃and 250℃.八11 the ini-tial temperature T;,peak temperature Tp,and final temperature T} of curing increased with increasing heating rate. The curing behavior of LPF was affected by the amount of curing agent. When the content of curing agent was 12%,the curing behavior of LPF was similar to that of neat PF, but with a greatly lower TN. Little change in reaction heat was observed by altering heating rate and amount of curing agent. The kinetic analysis was performed by means of Ozawa equation and activation energy was obtained as 85 .64KJ/mol.

Key words: thermoplastic, lignin, phenolic resin, curing kinetics