Abstract
This paper studies the potential electro-spraying of a polyester woven fabric by silica aerogel particles using a fluorocarbon finishing method. For the first time, the samples of different mixtures of silica aerogel and fluorocarbon were prepared and successfully coated on the polyester fabrics using an electro-spraying process. The prepared fabrics were characterized by FTIR, SEM, and EDS and compared with the un-treated sample in term of some physical properties including heat transfer, 3 M water repellency, water contact angle, air permeability and abrasion fastness. According to the results, a decreasing trend in the heat transfer was observed from 71.65 (0.5)% for the un-sprayed fabric to 38.35 (1.06) and 30.99 (0.4)% for the electro-sprayed fabrics for 16 and 24 h, respectively. As for the air permeability, a similar trend was observed in which the sample containing a higher amount of aerogel has less air permeability. Also, the results indicated that the presence of aerogel particles improves the hydrophobic properties of the electro-sprayed samples. Thus, the sample electro-sprayed with the aerogel/fluorocarbon mixture for 24 h, showed the most hydrophobicity with the contact angle of 152.2 (0.8)°. Also, the weight losses of the sprayed samples after the abrasion test were insignificantly less than 5% leading to a low dust-releasing behavior of the aerogel particles from the fibers surface.
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