STUDY OF CATALYTIC EFFECT OF TRIPHENYL PHOSPHINE ON PREPARATION OF PHOSPHORUS-CONTAINING EPOXY RESIN BY CHEMICAL KINETICS

摘要

The chemical kinetics of the reaction between cresol formaldehyde novolac epoxy (CFNE) and9,10-dihydro-9-oxa-10-phosphaphenantrene-10-oxide (DOPO) was studied in this paper.The exothermic peak temperature of the reactions between CFNE and DOPO with various amounts of triphenyl phosphine (TPP) were characterized by DSC (Differential Scanning Calorimetry).The average activation energies of the reactions were calculated by Kissinger and Ozawa method.The results showed that the exothermic peak temperature decreases with the increase of TPP until the TPP amount reaches 1.5％.The average activation energies of the reactions between CFNE and DOPO with 0 and 1.5％ TPP obtained by the methods of Kissinger and Ozawa were 162 kJ/mol and 113 kJ/mol,respectively.The ratio of reaction rates at 140℃ and 130℃ was calculated to be 2.26 through Arrhenius equation and was confirmed by the APC(Advanced Polymer Chromatography) measurements.