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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Modification of wood by liquid-precursor thermal spray coating

Sedhain, Ganesh 07 August 2020 (has links)
This research investigates the efficacy of liquid-precursor thermal spray coating (TSC) as a facile wood modification technique to bring hydrophobicity and UV durability to a wooden surface. The technique was successful in depositing Cu and TiO2 particles onto southern yellow pine (SYP) veneers by using copper azole, copper quaternary, and titanium tetraisopropoxide as the precursor solutions. Using optimized settings, the average coating surface coverage of > 90% and an average coating thickness of > 5 μm were obtained. The coatings displayed up to 4H rating in the film hardness scale and up to 3B rating in adhesion strength scale, suggesting reasonable mechanical durability under mild mechanical abrasion. TSC-modified wood with TiO2 created a water repellent layer, yielding a significant increase in hydrophobicity that changed the water contact angle from 57° to 126°. Accelerated weathering test results showed that the TSC-modified wood was more resistant to discoloration compared to unmodified wood.

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