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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Brząkalski, Dariusz
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Nanocomposites Based on Thermoplastic Acrylic Resin with the Addition of Chemically Modified Multi-Walled Carbon Nanotubescitations
- 2023Beeswax as a natural alternative to synthetic waxes for fabrication of PLA/diatomaceous earth compositescitations
- 2023Feldspar-Modified Methacrylic Composite for Fabrication of Prosthetic Teethcitations
- 2023Organosilicon Compounds in Hot-Melt Adhesive Technologiescitations
- 2023Polyamide 11 Composites Reinforced with Diatomite Biofiller—Mechanical, Rheological and Crystallization Propertiescitations
- 2022Aspects and Principles of Material Connections in Restorative Dentistry—A Comprehensive Reviewcitations
- 2022Where ppm Quantities of Silsesquioxanes Make a Difference—Silanes and Cage Siloxanes as TiO<inf>2</inf> Dispersants and Stabilizers for Pigmented Epoxy Resinscitations
- 2022Influence of Diatomaceous Earth Particle Size on Mechanical Properties of PLA/Diatomaceous Earth Compositescitations
- 2022Novel Multifunctional Spherosilicate-Based Coupling Agents for Improved Bond Strength and Quality in Restorative Dentistrycitations
- 2021Methodological Aspects of Obtaining and Characterizing Composites Based on Biogenic Diatomaceous Silica and Epoxy Resinscitations
- 2021A New Method of Diatomaceous Earth Fractionation—A Bio-Raw Material Source for Epoxy-Based Compositescitations
- 2021Why POSS-Type Compounds Should Be Considered Nanomodifiers, Not Nanofillers—A Polypropylene Blends Case Studycitations
- 2020Highly bulky spherosilicates as functional additives for polyethylene processing--Influence on mechanical and thermal propertiescitations
- 2019The influence of surface physicochemistry of solid fillers on dispersion in polyurea systems
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article
The influence of surface physicochemistry of solid fillers on dispersion in polyurea systems
Abstract
Polyurea coatings are obtained by hydrodynamic spraying by means of high-pressure, spray-coatingequipment. A chemi-cal reaction between the isocyanate and amine components occurs in the time of approximately 6 seconds, which enables use of the coated object almost immediately after coating application. Polyurea coating modificationresults in changes in their properties and a cost reduction. In this work modifiers such as expanded graphite, talc and chalk, which are inexpensive, eas-ily commercially obtainable fillers were employed. The curing degree was measured by FT-IR spectroscopy, thermal stability by thermogravimetric analysis (TG) and phase transition temperatures by differential scanning calorimetry (DSC). For the systems stored under different conditions, the tensile strength and Shore hardness in the D scale were also measured. SEM/EDS analysis was performed to assess the dispersion of the modifiers in the polyurea coatings. To determine the hydro-phobic-hydrophilic character, contact angle analyses were performed. The addition of the fillers improves some of theparameters, e.g. the thermal stability and mechanical properties.