Title Alternative:Laser treatment of special fibres
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Technická Univerzita v Liberci
Laser treatment of textile fabrics is a dry treatment of the surface of the material using the laser beam at 9.3 - 11.5um wavelengths of infrared electromagnetic spectrum. The utilization of lasers in surface modifications is one of the new technologies being applied in recent years. Lasers are capable of changing the properties of fibers, when applied at certain intensities of laser beam. The fibers of treatment are Kevlar 49, Kevlar 149 and Glass fibres due to their high strengths and high thermal stabilities. The treated fabrics are tested for absorbency test, Infrared Spectrophotometer, surface resistivity, Scan Electron Microscopy, abrasion and pilling tester, colour measurement and mechanical strength measurements and compared with the untreated samples of Glass, Kevlar 149 and Kevlar 49 fabrics. The water drop absorbency tests of the treated samples have shown different results as compared to the untreated substrates. The influence of the laser light on the surface of the treated material show the carbonization of the chemical structure by the use of IR spectrophotometer. The treated materials tend to be rougher on the surface and the evidence was realized by Scan Electron Microscopy (SEM) to view the surface morphology. Abrasions of the samples were tested using abrasion tester and the results of the laser irradiated where compared with non - irradiated samples. The increase in laser's energy density reduced the abrasion resistance of the material.
74 s., 20 s. příl. :il., tab., grafy +CD ROM
lasers, textile technology, textile fabrics, lasery, textilní technologie, textilie