Effect of mixed sol-gel precursors on inorganic-organic polyurethane hybrid thermosets: DOE study
| Autor: | Zhouying He, Di Duan, Tongzhai Gao, Mark D. Soucek |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Zirconium
Materials science Cyclohexane General Chemical Engineering Organic Chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Tetraethyl orthosilicate Polyester chemistry.chemical_compound chemistry Chemical engineering Phase (matter) Materials Chemistry Hexamethylene diisocyanate 0210 nano-technology Sol-gel Polyurethane |
| Zdroj: | Progress in Organic Coatings. 133:237-248 |
| ISSN: | 0300-9440 |
| DOI: | 10.1016/j.porgcoat.2019.04.023 |
| Popis: | A series of organic-inorganic hybrid coatings were formulated using cyclohexane based polyester polyol reacting with hexamethylene diisocyanate isocyanurate (3HDI) as the organic polyurethane phase. The inorganic phase consisted of various sol-gel precursors [Tetraethyl orthosilicate (TEOS), Titanium(IV) isopropoxide (TIP), Zirconium(IV) propoxide (ZRP)]. 3-aminopropyltriethoxysilane (APTES) mono-functionalized HDI (APTES-3HDI) was used as a coupling agent to link the organic phase and inorganic phase. The hetero-bonded silicon-oxygen-metal (Si-O-Metal) colloids resulting from a mixed species of sol-gel precursors within hybrids were formed and confirmed by Solid State NMR. The effect of mixed sol-gel precursors was investigated and optimized using design of experiments (DOEs) for the viscoelastic, mechanical, and coating properties. The synergistic effect of eliminating the phase separation and enhancing coating properties were observed from small angle X-ray scattering (SAXS) and scanning electron microscopy (SEM). |
| Databáze: | OpenAIRE |
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