Electrostatic Propensity Research Articles

Enhanced Antistatic and Mechanical Properties of Corona Plasma Treated Wool Fabrics Treated with 2,3-Epoxypropyltrimethylammonium Chloride

In this work, wool fabrics were treated in a corona discharge machine at three different corona intensities and at four fabric speeds. The corona-treated fabrics were subsequently treated with a fiber reactive quaternary ammonium compound, 2,3-epoxypropyltrimethylammonium chloride (EPTAC). The electrostatic propensity, tensile strength, wettability, and surface morphologies of the treated fabrics were assessed. The surfaces of modified wool fabrics were characterized by ATR-FTIR and FT-Raman spectroscopies. It was found that corona treatment decreased the electrostatic propensity only to certain levels, but a significant decrease in corona intensity and an increase in hydrophilicity were observed for the corona-treated fabrics further treated with EPTAC. The tensile strength of the corona in combination with EPTAC-treated fabrics considerably increased over the control fabric, but only small differences in tensile strength were observed for the various corona treatments. ATR-FTIR and FT-Raman spectroscopi...

Functional modification of sanitary nonwoven fabric by chitosan/nanosilver colloid solution and evaluation of applicability

For their functional enhancement, sanitary nonwoven fabrics with a relatively smooth surface were treated using chitosan, a natural polymer with excellent biocompatibility, and nanosilver colloid solution, which has strong antibacterial effects even when used in small amounts. The treatment effect was examined at various mixing ratios. When the mixing ratio of the nanosilver solution was higher, antibacterial and deodorization activity was increased. For CH3/NS1 treated fabric, when the mixing ratio of chitosan and nanosilver solution was 3:1, the air permeability was most excellent, and worked as a positive in improving the pleasantness of the sanitary nonwoven fabric. In all samples, the electrostatic propensity was reduced, regardless of the mixing ratio. In terms of the moisture characteristics of chitosan/nanosilver treated nonwoven fabrics, the moisture uptake was found to be superior in the CH3/NS1 treated fabric. When the mixing ratio of the nanosilver solution was higher, moisture permeability decreased, showing a similar tendency to that of air permeability. The vertical water permeability coefficient increased in all treated fabrics. The dynamic water absorption rate was good in CH4 and CH3/NS1 treated fabrics. This means that the absorption of water in the liquid state became easier, thus improving applicability as sanitary nonwoven fabrics.

메탈릭 자카드 직물 물리적 성능평가

The purposes of this study are to evaluate physical performance of metallic Jacquard fabrics, and to contribute to the research and development of the women`s suit made of the metallic Jacquard fabrics. First, eight fabrics were woven with two kinds of warp yarns(nylon and rayon) and weft yarn blended with various contents(0, 7, 14, 21%) of metallic yarn. Second, the mechanical properties were measured by using the KES-FB system, and physical properties such as tensile strength, tearing strength, abrasion resistance, drape, pilling, snagging, degree of crease resistance, flexural stiffness, specular gloss, folding endurance and electrostatic propensity were measured. The results were as follows. As the metal fiber content increased, bending, shear, thickness and weight increased, which imply low recovery of wrinkles. It means that metallic Jacquard fabrics enable to use as a memory fabric. 7% metallic Jacquard fabric showed a low value at total hand value, but there was little change. As the metal fiber content increased, tensile strength, tearing strength, drape coefficient, specular gloss and flexural stiffness increased, however the degree of crease resistance, electrostatic propensity and folding endurance decreased. The metallic Jacquard fabrics were excellent in snagging, abrasion resistance and pilling.

A Laboratory Protocol to Assess the Electrostatic Propensity of Protective-clothing Systems

The ability to predict the electrostatic propensity of textile systems has been an elusive goal for many years. Some small-scale test methods previously reported were found to be inadequate for certain conditions. One of the most serious problems is poor correlation between test measurements and the values of electrostatic discharges from a clothed person in real-life situations. This paper describes the development of a laboratory protocol to evaluate the electrostatic properties of clothing systems Four small-scale tests were evaluated and compared in order to select a protocol that could best assess the static propensity of protective-garment systems worn by workers in hazardous environments under dry conditions. Several two-layer fabric systems that included non-FR (non-fire-retardant) cotton, as well as thermal-protective fabrics of aramid fibre/carbon, aramid fibre/PBI (polybenzimidazole) fibre, aramid fibre/FR viscose, and FR cotton, were tested. Experiments were conducted at room temperature and 0% and 20% relative humidity (r.h.). Fabrics were evaluated in terms of both peak discharge potentials and charge decay. These peak potentials and charge decays were compared with data from human-body experiments, and significant coefficients of determination (R 2) of up to 0.99 were found when results from different tests were regressed on human-body data. It therefore seems that measuring peak discharge potentials and charge decays from charged-fabric systems and peak discharge potentials from a capacitor by using a battery of test methods can be sufficient to assess, with high accuracy, the static behaviour of garment systems in real-life conditions.

Effect of chitosan-treatment on light resistance, heat retention and electrostatic propensity of silk fabrics

Effect of chitosan-treatment on light resistance, heat retention and electrostatic propensity of silk fabrics

Objective Measurement of the Electrostatic Propensity of Carpets

The electrostatic propensity of carpets, as measured by a stroll test, has been compared with both the bulk and surface resistances of the carpets measured under the same atmospheric conditions. The correlations between electrostatic propensity and electrical resistance were poor for both the bulk resistance and surface resistance cases. In spite of the poor correlations, it would appear that the 2 times 1010 ohms recommendation presently in vogue will guarantee that the electrostatic propensity of the carpets should be less than the threshold of shock perception.