Mechanical, thermal and flammability properties of huntite hydromagnesite reinforced polyurethane elastomer

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Date

2017

Author

Güler, Türkan

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Polyurethane elastomer (Thermoplastic Polyurethane-TPU) has desirable properties for many applications including footwear, packaging, protective coatings, cables, wires and tubes in the mainly automotive and construction industries. Huntite and Hydromagnesite are naturally occurring minerals that has been used as fire retardants commercially since the late 1980’s. The World’s largest reserve of this mineral has been found in Turkey. The main purpose of present work is to investigate the combustion and thermal degradation characteristics of the flame retardant TPU based composites containing huntite and hydromagnesite with and without expandable graphite. The combustion and the thermal degradation characteristics of composites are investigated by LOI, UL-94 standard, thermogravimetric analysis (TGA) and mass loss calorimeter. Char residues remained after mass loss calorimeter test are investigated by conducting attenuated total reflectance – Fourier-transform infrared spectroscopy (ATR-FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis. The mechanical properties of the composites are also investigated by tensile testing and dynamic mechanical analysis (DMA).

Subject Keywords

Huntite., Hydromagnesite., Carbonate minerals., Fire resistant polymers., Thermoresponsive polymers.

URI

http://etd.lib.metu.edu.tr/upload/12620860/index.pdf
https://hdl.handle.net/11511/26340

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

T. Güler, “Mechanical, thermal and flammability properties of huntite hydromagnesite reinforced polyurethane elastomer,” M.S. - Master of Science, Middle East Technical University, 2017.