Curing process of phenol-urea-formaldehyde-tannin (PUFT) adhesives -: Kinetic studies by DSC and DMA

被引：31

作者：

Vázquez, G ^{[1
]}

López-Suevos, F ^{[1
]}

González-Alvarez, J ^{[1
]}

Antorrena, G ^{[1
]}

机构：

[1] Univ Santiago de Compostela, Sch Engn, Dept Chem Engn, Santiago De Compostela 15782, Spain

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2005年 / 82卷 / 01期

关键词：

chemical cure; DMA; DSC; kinetics; mechanical cure; phenol-urea-formaldehyde-tannin adhesives;

D O I：

10.1007/s10973-005-0855-7

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Phenol-urea-formaldehyde-tannin (PUFT) adhesives have been prepared by copolymerization at room temperature of pine bark tannins with phenol-urea-formaldehyde (PUF) prepolymers prepared under varying operating conditions. Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) have been used to analyse the curing of prepolymers and adhesives. DSC curves were obtained at three different heating rates and, by means of the Model Free Kinetics isoconversional method, chemical conversion vs. time at a given temperature was obtained. Mechanical conversion was calculated from DMA storage modulus data for those adhesives which gave the best results for plywood and MDF boards.

引用

页码：143 / 149

页数：7

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