Viscosity change of unsaturated polyester–alumina-composites using polyethylene glycol alkyl ether based dispersants

• Published in: Composites. Part A, Applied science and manufacturing Vol. 37; no. 11; pp. 2155 - 2163
• Main Author: Hanemann, T.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01-01-2006; Elsevier
• Subjects: A. Thermoplastic resin; Applied sciences; B. Rheological properties; Composites; E. Powder processing; Exact sciences and technology; Forms of application and semi-finished materials; Polymer industry, paints, wood; Technology of polymers; B. Rheological properties; A. Thermoplastic resin; E. Powder processing; Structure effect; Molecular structure; Ester polymer; Dispersant; Experimental study; Modeling; Oxide ceramics; Composite material; Ethylene oxide polymer; Shear viscosity; Cyclic ether polymer; Concentration effect; Molecular model; Unsaturated polymer; Alumina; Rheological properties
• ISSN: 1359-835X; 1878-5840
• DOI: 10.1016/j.compositesa.2005.11.007

The influence of a series of polyethylene glycol alkyl ether based dispersants on the viscosity of unsaturated polyester–alumina-composites has been investigated systematically. A few correlations between the dispersants molecular structure, the used concentration and the related composite flow properties have been found. In general only the addition of small dispersant molecules with a short hydrophilic anchoring group and an extended hydrophobic tail for improved steric stabilization allows a noticeable viscosity reduction at different concentrations and temperatures.