Numerical Estimation of the Thermal Response of Thermal Protective Clothing-Air Gap-Human Skin Micro-system

Thermal protective clothing has been recognized as the primary shielding against emergency fire hazard and inflammable gas leakage. Therefore,the thermal response of human covered with thermal protective clothing under high temperature is the key work to investigate the thermal insulation of thermal protective clothing. A coupling model composed of thermal protective clothing,air gap and human skin is established and the temperature of the micro-system is numerically solved via the finite element method( FEM).Especially,the heat transfer of air gap located between clothing and human skin considering conduction and radiation is established while the human skin layers involve the effect of blood perfusion. Then the effect of thermophysical properties( thermal conductivity and volumetric capacity) of fabric and thickness of fabric and air on the thermal response of the micro-system is elucidated and compared.The results indicate that the volumetric heat capacity of fabric is the key parameter to affect the thermal shielding performance of thermal protective clothing,and the thicker fabric thickness and air gap thickness can improve the thermal protective properties of the micro-system.

Smart Clothing Fabric Color Matching with Reference to Popular Colors

Color economy and market fashion trend have an increasing impact on clothing fabric color matching.Therefore,a smart clothing fabric color matching system with reference to popular colors is designed to realize the diversification of clothing color matching,which includes a palette generation module and a clothing fabrics-palette color matching network(CF-PCN).Firstly,palette generation module generates palettes referring popular colors while maintains color styles of clothing fabrics.Secondly,CF-PCN generates color matching images containing color information of palettes.The experimental results show that the color matching system has a higher average pixel ratio of palette colors and contains more palette color information.It demonstrates that the system achieves color matching innovation referring popular colors while retaining color style of clothing brands and provides designers with appropriate color matching solutions.

Clothing Manufacturers Need to Focus on Novel Fabric Trends

Garment manufacturers give utmost importance on quality of fabrics, cuts and design as they make a fashion statement. Manufacturers adjust their production cycles as per fashion oriented changes.

Fabrication of micro-honeycomb ceramics by cloth fabric pore-forming

Micro-honeycomb ceramics were successfully fabricated through brush-coating with cloth fabric as pore-forming agent. The influence of pore-forming agent and slurry’s moisture content on the micro-honeycomb ceramics was investigated. The results indicated that micro-honeycomb ceramics made from pore-forming agent cloth fabric with fibre diameter of 100 μm and slurry with 45% （mass fraction） moisture content have the porosity of 65% （volume fraction）, bending strength of 24.3 MPa, pore size of about 100 μm, cell wall thickness of about 50 μm and porosity of 1131 pore/cm2. It was suggested that the pore size and the porosity could be adjusted using the pore-forming agent and moisture content of the slurry respectively.

Authentication of Age of Blood Stains on Blooded Cotton Fabric

Blood stains on the fabric often appear at the scene of the crime. The age determination of blood stains can provide important information to speculate the time of crime. The relationship between the age of blood and the bending rigidity of blooded cotton fabric washed was investigated experimentally via the use of FAST-2 bending tester. The bending length of blooded fabric washed at different time was measured and the bending rigidity was calculated.The relationship between the age of blood and the bending rigidity after washing was obtained through curve fitting. The result shows that the bending rigidity of blooded fabric washed is various with the increase of the age of blood stains and this relationship can be used to speculate the age of blood stains. This method provides a new perspective for determining the bloodstain age.

Development of an Antibacterial Finishing Progress for Medical Compression Hosiery

Medical compression hosiery based on polyurethane and polyamide covered yarns was treated with two antibacterial agents,SCJ-891 and SCJ-963, to investigate their antimicrobial performance. Various parameters of finishing process, including concentration,temperature,pH and liquor ratio,were studied in the single factor and orthogonal experiments. ANOVA analysis indicated that all of these four variables played important roles in antimicrobial efficacy. Different combinations of finishing parameters gave different antimicrobial efficacies against both gram positive bacteria Staphylococcus aureus( S. aureus) and gram negative bacteria Escherichia coli( E. coli). SCJ-963 treated fabric had better antibacterial efficacy when compared with that of SCJ-963 treated yarn. Meanwhile both SCJ-963 treated fabric and yarn showed better antibacterial efficacy when compared with SCJ-891 treated fabric and yarn. The optimized parameters for SCJ-891 treated fabric against S. aureus( A: 86%) were a liquor ratio of 1: 20,a concentration of 10% of weight of fabric,pH of 4. 5 and a temperature of 99℃; the optimized parameters for SCJ-963 treated fabric against S. aureus( A: 83%) were a liquor ratio of 1: 15,a concentration of 10% of weight of fabric, a pH of 5 and a temperature of 99℃. Furthermore, two kinds of antimicrobial finishing of the fabric had good resistance to 50 times washing. This study concluded that SCJ-891 and SCJ-963 were compatible to be used in medical compression hosiery.