Premium
Effect of the Amount of Calcium Carbonate as Filler on the Rheological and Adhesion Properties of a Water‐Based Polyurethane Dispersion
Author(s) -
MuñozMilán Ana Belén,
PérezLimiñana Ma Ángeles,
AránAís Francisca,
TorróPalau Ana,
OrgilésBarceló A. César
Publication year - 2005
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200550304
Subject(s) - adhesive , rheology , calcium carbonate , materials science , filler (materials) , polyurethane , thixotropy , composite material , viscosity , adhesion , dispersion (optics) , rheometry , layer (electronics) , physics , optics
In this study, the properties of water‐based adhesives based on a polyurethane ionomer (PUD) and a micronised CaCO 3 as filler was analysed. Different amounts of a micronised CaCO 3 (5‐25 wt%) were added to water‐based polyurethane (PUD) adhesive formulations in order to reduce its relatively high cost. The addition of a micronised calcium carbonate filler increased the viscosity, the storage and loss moduli of the PUD adhesives, and imparted pseudoplasticity and thixotropy, more noticeably for the adhesive with the highest calcium carbonate content. The creation of acid‐base interactions seemed to be responsible for the improvement in the rheological properties of the PUD adhesives containing CaCO 3 as filler. On the other hand, the addition of CaCO 3 filler might deteriorate the adhesion properties to PUD adhesives.