TY  - JOUR
U1  - Wissenschaftlicher Artikel
A1  - Thébault, Marion
A1  - Kandelbauer, Andreas
A1  - Zikulnig-Rusch, Edith
A1  - Putz, Robert
A1  - Jury, Sandra
A1  - Eicher, Iris
T1  - Impact of phenolic resin preparation on its properties and its penetration behavior in Kraft paper
JF  - European polymer journal
N2  - The core of decorative laminates is generally made of stacked Kraft paper sheets impregnated with a phenolic resin. As the impregnation process in industry is relatively fast, new methods need to be developed to characterize it for different paper-resin systems. Several phenolic resins were synthesized with the same Phenol:Formaldehyde ratio of 1:1.8 and characterized by Fourier Transform Infrared Spectrometry (FTIR) as well as Size-Exclusion Chromatography (SEC). In addition, their viscosities and surface tensions when diluted in methanol to 45% of solid content were measured. The capacity of each resin to penetrate a Kraft paper sheet was characterized using a new method, which measures the conductivities induced by the liquid resin crossing the paper substrate. With this method, crossing times could be measured with a good accuracy. Surprisingly, the results showed that the penetration time of the resin samples is not correlated to the viscosity values, but rather to the surface tension characteristics and the chemical characteristics of paper. Furthermore, some resins had a higher swelling effect on the fibers that delayed the crossing of the liquid through the paper.
Y1  - 2018
SN  - 0014-3057
SS  - 0014-3057
U6  - https://doi.org/10.1016/j.eurpolymj.2018.05.003
DO  - https://doi.org/10.1016/j.eurpolymj.2018.05.003
IS  - 104
SP  - 90
EP  - 98
S1  - 9
PB  - Elsevier
CY  - Amsterdam
ER  -