Advanced Materials Research Vols. 287-290

Abstract: The conditions for extracting sappanwood pigment by cellulase were investigated. The results showed that, compared with traditional water extract method, the absorbance of sappanwood extract raised 35%. Single factor analysis method was done to the enzymatic process, and the optimal extracting conditions were bath ratio 20: 1, mass ratio of sappanwood and cellulase 100:1, enzymolysis at 50°C for 80min, extract at 80°C for 60min. Silk fabric was dyed with the sappanwood extract, the fastness was above grade 3-4.

Abstract: The nerve system has the upmost role in coordinating the actions of an animal. It is, therefore, important to repair the damaged nerve to restore its functions. In this study, we braided poly(lactic acid) ply yarn into a tubular structure using a 16-spindle braiding machine, aiming at making a nerve conduit. The results showed that the poly(lactic acid) braid obtains the maximum tensile stress when the ratio of take-up gear and braid gear is 60/50. The extensibility of the produced braid makes it a suitable conduit for nerve regeneration.

Abstract: For improving wear properties of cotton fabric and exploiting ecological cotton textile with multifunction, cotton fabric was modified with anthraquinone extract of aloe. Aloe anthraquinone was fixed onto the surface of cotton fabric through the esterification crosslink of citric acid at high temperature using a pad-dry-cure process. The effects of citric acid concentration, catalyst concentration, aloe anthraquinone concentration and curing temperature on the treatment were mainly investigated. The optimized treating parameters for cotton fabric were obtained. The weight gain of modified fabric was significantly affected by the technical conditions. The breaking strength, moisture adsorption, wrinkle recovery angle, UV resistance and antibacterial properties of treated fabrics were respectively measured. The results showed that the wrinkle recovery angle of treated fabric markedly increased, whereas the breaking strength slightly decreased, and the moisture adsorption of fabrics kept almost unchanged. Additionally, the ultraviolet resistance and antibacterial property of modified cotton fabric became strong.

Abstract: Multi-target grey situation decision-making can make complex decision problems clear and improve the accuracy of decision. In this paper, it is used to rank the cleaning performance of cleaning cloths for LCD Display Panel. Ten representative cleaning cloths made of Polyester/ Polyamide composite microfiber are chosen. Evaluation indices which affect clean result are extracted and measured. The cleaning effects are then evaluated by both multi-target grey situation decision-making and actual performance appraisal, which show similar results.

Abstract: Cotton fabrics were used as substrate to develop an electroconductive textile. Due to hydrophilia and porosity of cellulose, a novel electroless nickel plating process was attempted, in which activation and electroless plating were combined. In order to improve the wettability of cotton fibres, specimens were treated by NaOH solution and were bleached in NaClO solution. Then, the treated fabric was plated by using the novel process. The surface resistivity of the plated specimens reached to 15.34 mΩ·cm, which indicated the plated cotton fabrics have good conductivity.

Abstract: In this study, visible on the far-infrared emissivity of knitted fabric, its rate of change of far infrared radiation were observed. In this study, light exposure time for 20,40,60 minutes, the experimental results, the longer the kind of light source distribution is much higher surface temperature will be relatively higher rate of infrared radiation, when the light source when the suspension began measuring data, the light source, the far infrared radiation rate of about 0.941 ~ 0.975 when reached will begin to flatten, after 15 minutes returned to its emission rate of about 0.937, when the far-infrared light irradiation of polyester fabrics through the far infrared radiation values are effectively increase, so the light irradiation intensity of far infrared radiation rate of the subjects were characterized by light and the length of time to improve the fabric surface temperature change and this temperature rise is the key to the experiment

Abstract: In this study, the polyester fiber (PET) and absorbent cotton (AC) blend was needle-bonded to make the nonwoven PET/AC composite wound dressing matrix fabrics. The combined advantages of mechanical strength due to PET and water absorption due to AC make the composite nonwoven an attracting wound dressing matrix fabric. We examined physical features, such as mechanical properties, air permeability, softness, water imbibition, and water absorption rate, of the nonwovens made of different blending ratios of PET and AC. We found that while the strength and air permeability were slightly reduced at blending ratio of 80:20, the water imbibition increased about 1.6 cm for the same nonwoven. The results suggested that the optimal blending ratio for the nonwoven to be used as a wound dressing matrix is 80:20.

Abstract: This research of the PET/Nylon fabric pre-treatment by far-infrared and adding Methylenediphenylisocyanate(MDI) to 0%、2%、4%、6% and 8%. According to fabric absorption medicament effect and bonding strength content analyzing. Heating 20 seconds, after stop 10 seconds and then heat 20 seconds and add 8% Methylenediphenylisocyanate(MDI) is the beast treatment, fabric-fabric adhesion strength is 16.73 kgf, fabric-rubber adhesion strength is 18.70 kgf, fabric-fabric and fabric-rubber adhesion strength that improve 54.6%-69.6%.

Abstract: This research is to develop a processing technique for fabricating the three-dimensional nonwoven fabric with the sound absorption capability and flame retardant capability. Furthermore, the physical properties and functionalities of the three-dimensional nonwoven fabric are adequately evaluated and tested. Several nonwoven fabrics are fabricated by two polyester fibers with different denier numbers and the low-melting-point fibers. Then, multiple nonwoven fabrics are used to make three-dimensional nonwoven fabrics through lapping, needle-punching process. After being reinforced by heating in the hot air circulation oven, the physical properties of three-dimensional nonwoven fabrics such as tensile strength, breathability, sound-absorption coefficients, limiting oxygen index (LOI), and thermal conductive coefficients are properly evaluated. Subsequently, the influence of fiber faintness on the performance of sound-absorption and thermal insulation of three-dimensional nonwoven fabrics is carefully examined through the obtained results.

Abstract: Based on the slab caster mold of ChengGang Company as prototype, the water model with 1:1 scale was used to study the effects of casting speed、nozzle port angle、immersion depth、bottom structure、mold width and other parameters on the surface flow velocity of liquid steel in slab caster mold. The results show that the effect of casting speed is biggest and with increase in the casting speed, the surface flow velocity of liquid steel is prominently increased, when the mold width at 1650mm, the surface flow velocity from 0.04m/s to 0.1m/s with the casting speed from 0.7m/min increased to 1.4m/min