Influence of a Hydrophobic Emulsion on the Surface Properties of Coatings of Water-Dispersion Acrylic Paint
- 27 July 2021
- journal article
- Published by Trans Tech Publications, Ltd. in Materials Science Forum
- Vol. 1040, 165-171
- https://doi.org/10.4028/www.scientific.net/msf.1040.165
Abstract
The existing methods of confering hydrophobic properties to various building materials are considered. Obtaining special, including hydrophobic, properties of water-emulsion paints is a very relevant task. Previously, a method was developed for producing an emulsion of a polysiloxane stabilized with polyvinyl alcohol. The paper describes the possibility of using a hydrophobisating emulsion of polyhydrosiloxane as a functional additive for an acrylic water-dispersion paint. This emulsion is capable of forming coatings on dense and porous surfaces with an adjustable contact angle up to 105 °. The use of this emulsion, with its sufficient coalescence for volumetric hydrophobization of coatings, makes it possible to obtain a high contact angle on the surface. In the paper, it was assumed that the partial introduction of small amounts (up to 10 %) of a hydrophobizing emulsion into water-dispersion paints would allow achieving the contact angle of wetting for similar coatings consisting exclusively of emulsion. It is shown that the introduction of small amounts of a hydrophobizing emulsion with an auxiliary coalescing action of ethylene glycol makes it possible to impart hydrophobic properties to the surface of the resulting coating. When the optimum concentration of ethylene glycol in the coating is reached, dissolution and transport (yield) of polysiloxane to the surface is ensured. The research carried out made it possible to develop a paint composition with a hydrophobizing emulsion with a contact wetting angle of about 100 °, which ensured the hydrophobicity of the previously hydrophilic coating of a water-dispersion acrylic paint.Keywords
This publication has 16 references indexed in Scilit:
- Durability of Hydrophobic/Icephobic Coatings in Protection of Lightweight Concrete with Waste AggregateMaterials, 2020
- Construction of MOF-based superhydrophobic composite coating with excellent abrasion resistance and durability for self-cleaning, corrosion resistance, anti-icing, and loading-increasing researchChemical Engineering Journal, 2020
- Double layered superhydrophobic PDMS-Candle soot coating with durable corrosion resistance and thermal-mechanical robustnessJournal of Materials Science & Technology, 2020
- The Effect of Volumetric Hydrophobization on Moisture Transfer during Hardening of ConcreteMaterials Science Forum, 2020
- Fine-grained concrete modified with a multifunctional additiveIOP Conference Series: Materials Science and Engineering, 2020
- Tribological and Wetting Properties of TiO2 Based Hydrophobic Coatings for CeramicsJournal of Tribology, 2019
- Synthesis, characterization and physicochemical properties of glycosyl-modified polysiloxaneJournal of Molecular Liquids, 2018
- Properties of ABA and BA polysiloxane amphiphiles modified by polyetherJournal of Dispersion Science and Technology, 2017
- Superhydrophobic Coatings on Asphalt Concrete Surfaces: Toward Smart Solutions for Winter Pavement MaintenanceTransportation Research Record: Journal of the Transportation Research Board, 2016
- Self-Assembling Particle-Siloxane Coatings for Superhydrophobic ConcreteACS Applied Materials & Interfaces, 2013