Propustnost ultrafialového záření textilií
Title Alternative:The transmission of ultraviolet radiation through a fabric
Loading...
Date
2008
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Technická Univerzita v Liberci
Abstract
Tématem této diplomové práce je posouzení vlivu mechanické deformace pletenin na prostup UV záření. Na textilních materiálech z celulózových vláken byl dále sledován vliv koncentrace absorbérů ultrafialového záření na jeho prostup textilií. Analýza výsledků je založena na sledování jak se s mechanickým namáháním mění porozita textilie a současně s ní prostup ultrafialového záření textilií. Zkoušky byly provedeny na bavlněných pleteninách různých struktur, upravených a neupravených UV absorbéry. Pleteniny byly postupně mechanicky namáhány definovanou silou a vzniklé deformované struktury byly mechanicky fixovány. Jednotlivé vzorky byly proměřeny na spektrofotometru, dále byla pomocí optického mikroskopu a systému obrazové analýzy LUCIA G stanovena porozita. Strukturní změny byly vizualizovány pomocí rastrovací elektronové mikroskopie.
The subject of this dissertation is the assessment of the influence of mechanical deformation of knitted fabric on the transmission of UV-radiation. The influence of absorbers of ultraviolet radiation on its transmission through a fabric was observed further in textile materials of cellulose fibres. Analysis of the results is based on the observation of how the porosity of a fabric varies with the value of mechanical load, and, at the same time, how the transmission of ultraviolet radiation through the fabric is changed. The tests were performed on knitted cotton fabrics of various structures, either treated or untreated, with UV-absorbers. The knitted fabrics were gradually loaded mechanically by a defined strength and the caused deformed structures were fixed mechanically. Individual samples were measured on a spectrophotometer and additionally their porosity was determined by an optical microscope and the system of LUCIA G graphic analyses. The structural changes were visualized by means of scanning electron microscopy.
The subject of this dissertation is the assessment of the influence of mechanical deformation of knitted fabric on the transmission of UV-radiation. The influence of absorbers of ultraviolet radiation on its transmission through a fabric was observed further in textile materials of cellulose fibres. Analysis of the results is based on the observation of how the porosity of a fabric varies with the value of mechanical load, and, at the same time, how the transmission of ultraviolet radiation through the fabric is changed. The tests were performed on knitted cotton fabrics of various structures, either treated or untreated, with UV-absorbers. The knitted fabrics were gradually loaded mechanically by a defined strength and the caused deformed structures were fixed mechanically. Individual samples were measured on a spectrophotometer and additionally their porosity was determined by an optical microscope and the system of LUCIA G graphic analyses. The structural changes were visualized by means of scanning electron microscopy.
Description
katedra: KOD; rozsah: 57s, 9 s. příloh
Subject(s)
ultrafialové záření, upf (ultrafialový ochranný faktor), uv absorbér, pletenina, spektrofotometrie, porozita, ultraviolet radiation, upf (ultraviolet protection factor), uv absorber, knitted fabric, spectrophotometry, porosity