| Abstract [eng] |
The aim of the master's thesis is to determine the new influence parameter for woven fabric and to investigate its influence on cloth flamme retardantcy. The assessment of the structure of the fabric and its influence on the properties of flammability are of particular importance when is projecting of flamme retardancy firefighters, officers, etc. uniform's. Four variants of different tissues from Nomex Delta TA (meta-amide fiber fabrics), 18.5 tex x 2 yarns, welter density S1 = 33 cm-1 and weights S2 = 28 cm-1 were used in the research. Selected weave tip: warp rib 2/2, twill weave 4/2 (step 2), twill weave 3/3 and basket weave 3/3. The paper analyzes various articles related to non-combustible materials, which describes fibrous differences affecting the tissue's inflammation and their diversity. Also analyzed articles related to the influence of fabric structure on the characteristics of burning, which specify, densely woven or knitted products burn more difficult and burn more slowly. The article also deals Woven Fabric Weave Evaluation and Influence on Flammability. The woven fabric weave evaluation and influence on flammability can be evaluated by various coefficients according to example V. Milašius, Brierley or Peirce. The possibilities of modification of the weaving parameter P have been analyzed. A horizontal burn test was performed and each tissue change was described during the test. Investigating the dependence of the burning properties (fracture and burning times) on the modified weaving parameter P'x, (where x is the relative influence of the weaving parameter P1 on parameter P '). It was found that the time dependence of the cracking time and the burn time varies from the modified parameter. The corrective tests of P'x influence on flammability properties were performed, the best estimation coefficients for prediction of fracture and firing times were estimated. |
