Synergistic Effects of Titanium Dioxide and Zinc Borate on Thermal Degradation and Water Resistance of Epoxy Based Intumescent Fire Retardant Coatings
| Autor: | Qandeel Fatima Gillani, Norlaili Amir, Rafiq Ahmad, Puteri Sri Melor Megat Yusoff, Hammad Aziz, Muhammad Hazwan Abdul Halim, Faiz Ahmad |
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| Rok vydání: | 2017 |
| Předmět: |
Thermogravimetric analysis
Materials science Zinc borate Mechanical Engineering 02 engineering and technology Epoxy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Fire performance 0104 chemical sciences chemistry.chemical_compound chemistry Mechanics of Materials visual_art Titanium dioxide visual_art.visual_art_medium General Materials Science Composite material 0210 nano-technology Ammonium polyphosphate Intumescent Fire retardant |
| Zdroj: | Key Engineering Materials. 740:41-47 |
| ISSN: | 1662-9795 |
| Popis: | This studies discuss the synergistic effects of titanium dioxide (TiO2) and zinc borate on thermal stability and water resistance of intumescent fire retardant coatings. TiO2 in association with a traditional intumescent flame retardant system which contains ammonium polyphosphate/expandable graphite/melamine/ zinc borate (APP–EG–MEL-ZB) was introduced to epoxy based coatings to improve the fire resistance. The influences of TiO2 on the properties of the coatings were investigated in detail by using Bunsen burner fire test, thermogravimetric analysis (TGA), scanning electron microscope (SEM) and water immersion test. Bunsen burner test revealed that incorporation of titanium dioxide in intumescent formulation reduced the steel substrate temperature from 240 °C to 116 °C. The TGA results proved that addition of TiO2 could enhance the anti-oxidation of the char layers and increase the residue weights of the coatings. The FESEM images demonstrated that addition of TiO2 could improve the foam structure of the char residue. Sea water resistance test demonstrated that the optimum mass % age of TiO2 (6%) exhibited great synergism with natural anti-corrosion agent, zinc borate, and improved corrosion resistance performance of intumescent coating formulations. |
| Databáze: | OpenAIRE |
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