Thermal Degradation Kinetics of Urea-Formaldehyde Resins Modified by Almond Shells.
ACS Omega
; 6(39): 25702-25709, 2021 Oct 05.
Article
em En
| MEDLINE
| ID: mdl-34632226
ABSTRACT
Almond shell-modified urea-formaldehyde resins (AUF) were prepared in this study. The optimal addition amount of almond shells was selected by formaldehyde emission and wet shear strength. The activation energy (E a) values at different conversion rates and the reaction kinetics were estimated based on the Flynn-Wall-Ozawa method. The results indicated that almond shells can significantly reduce the formaldehyde emission and increase wet shear strength and thermal stability of the urea-formaldehyde resin adhesive. The optimal addition of almond shells is 3 wt %.
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Bases de dados:
MEDLINE
Idioma:
En
Revista:
ACS Omega
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
China