MATEC Web Conf.
Volume 230, 20187th International Scientific Conference “Reliability and Durability of Railway Transport Engineering Structures and Buildings” (Transbud-2018)
|Number of page(s)||8|
|Section||Construction Materials, Protection and Repair of Structures and Buildings|
|Published online||16 November 2018|
Rheological properties of aquaeous dispersion of styrene acrylate copolymer incorporating hollow microspheres and AEROSIL®
Kharkiv National University of Civil Engineering and Architecture, Sumska St. 40, 61002 Kharkiv, Ukraine
2 Kharkiv State Auto-transport College, Constitution sq. 28, 61003 Kharkiv, Ukraine
* Corresponding author: email@example.com
The rheological properties of aquaeous dispersion of styrene acrylate copolymer incorporating hollow aluminosilicate microspheres and AEROSIL® 300 fumed silica (a high-range water reducing admixture) have been investigated using rotational viscometer. It is established that an increase in the degree of filling with hollow microspheres results in a significant increase in the viscosity of aqueous dispersion leading to the technological difficulties when coating the protected surfaces. AEROSIL® 300 can be dosed in small amounts resulting in a decrease in the structural strength and optimal viscosity of aqueous dispersion of acrylate copolymer, which allows to significantly reduce the viscosity density, while maintaining relatively low water demand and characteristics of highly filled systems, which is crucial in the technology of their application. The combination of such fillers as AEROSIL® 300 and hollow aluminosilicate microspheres in the styrene acrylate copolymer aqueous dispersion allows the combination of a number of positive effects: a reduction in the viscosity of the material during application (without dilution) by applying high shear rate and increasing viscosity (structuring) after application, and also during their storage and transportation.
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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