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Wei J.-B.,Shandong Ruyi Technology Group
Wool Textile Journal

Due to the fabric burning caused the fire happened frequently in the world, the flame retardant fiber Nomex (aramid 1313) and wool blended to development of high grade flame retardant fabric is a good choice. This paper introduces the nomex excellent physical and chemical properties and makes use of existing wool tops manufacturing equipment to do process research of flame retardant loose fiber slivering. It is about nomex property and process difficulty analysis to make specific parameters screening. In the processing of combing, the research chooses to use the specialized nomex antistatic oil and to determine the proper water oil ratio, solve the problem of electrostatic combing. Screening the reasonable combing, combed and gilling process specific parameters and to discuss the questions which should be pay attention to in the process of flame-retardant fiber slivering research, and make its loose fiber quality accord with the requirements of spinning dyeing top. Source

Li Q.,Deakin University | Hurren C.J.,Deakin University | Ding C.,Shandong Ruyi Technology Group | Wang L.,RMIT University | And 2 more authors.
Journal of the Textile Institute

Ultrasonics has shown the potential to reduce the cost and environmental impact of textile processing. This work investigates the impact of ultrasonic scouring on fibre entanglement caused during the scouring process. Levels of fibre entanglement were quantified by measuring fibre length using OFDA4000 after carding. A significant reduction in fibre entanglement after ultrasonic scouring was observed and this was due to a reduced fibre migration in the wash bath when compared with the mechanical agitation seen in conventional scouring process. Fibre cuticle scale damage resulting from the ultrasonic irradiation may also have contributed to the reduction in fibre entanglement. A reduced level of fibre entanglement from ultrasonic wool scouring leads to a reduction in fibre breakage during carding. © 2011 The Textile Institute. Source

Li Q.,Deakin University | Ding C.,Shandong Ruyi Technology Group | Yu H.,Shandong Ruyi Technology Group | Hurren C.J.,Deakin University | And 2 more authors.
Textile Research Journal

Scouring is the first stage of wool processing and is essential for determining the quality of fiber. Traditional aqueous scouring is a method that emulsifies and removes contaminants (such as wool grease, suint, and dirt) from the fiber surface; however, it promotes wool felting and is energy and water intensive. This study has shown that modification of the traditional wool scouring line by introducing an ultrasonic device could be a viable alternative for the wool scouring industry. A standard six-bath wool scouring line was retrofitted with two ultrasonic panels working at 80 kHz in bath 2. Scouring was carried out in three modes: conventional mode without the transport rake, ultrasonic mode without the transport rake, and conventional mode with the transport rake. Fiber samples after scouring were measured for color index, residual grease content, and residual ash content. Ultrasonic scouring was found to improve removal of grease and ash from the wool fiber. Modifications were proposed for the design of an industrial scouring line including the addition of fiber transport and dunking rollers and number of baths for the installation. © The Author(s) 2014. Source

Li Q.,Deakin University | Hurren C.J.,Deakin University | Wang L.J.,RMIT University | Lin T.,Deakin University | And 3 more authors.
Journal of the Textile Institute

Conventional aqueous scouring of greasy wool promotes wool felting and can be energy and water intensive. Ultrasonic wool scouring could be an alternative technology to minimize the negative impact, provided that the cleaning efficiency and fiber quality are not compromised. This study examined the influence of ultrasonic irradiation frequency and ultrasonic power variations on wool scouring performance at different liquor ratios. Scoured fiber, residual ash content, residual grease content, whiteness and yellowness were evaluated. The impact of liquor degassing on wool scouring effectiveness was studied. Fiber surface damage was also assessed in this work. It was observed that while there was no significant influence of ultrasonic frequency on the whiteness or yellowness of the scoured fibbers, wool scoured at frequencies of 28 kHz and 80 kHz had more grease and dirt removed than that scoured at 45 kHz. Low ultrasonic power and degassed bath liquor increased wool grease removal ability. Ultrasonic treatment caused scale cracking/peeling in some wool fibers. More severe cuticle damage was observed in fibers scoured at the lower frequency. This damage resulted in increased dye uptake by the fibers. © 2011 The Textile Institute. Source

Li Q.,Deakin University | Hurren C.J.,Deakin University | Yu H.,Shandong Ruyi Technology Group | Ding C.,Shandong Ruyi Technology Group | And 2 more authors.
Textile Research Journal

Wool fabrics, ultrasonically treated in various chemical conditions and for different time durations, were analysed for thermal properties by thermo-gravimetric analysis and differential scanning calorimeter, in comparison with the untreated fabric. Fabric mechanical properties, such as bending and tensile performance, and changes in fibre morphology were also evaluated before and after ultrasonic treatment.It is found that wool treated with ultrasonics at the appropriate time, has less mass loss and a higher thermal degradation temperature than that without ultrasonic treatment or with prolonged ultrasonic treatment. Resistance to thermal degradation is reduced when wool is ultrasonically treated in the presence of alkali. Differential scanning calorimeter analysis shows that while ultrasonic treatment has little effect on fibre crystallinity, an appropriate treatment can provide wool with increased water absorption. Ultrasonic treatment stiffens wool fabric to some extent when the treatment time is prolonged. The addition of detergent alone to the ultrasonic bath has little effect on fabric tensile behaviour, whereas a treatment with both detergent and alkali produces severe fibre damage and significant loss of fabric tensile strength. © The Author(s) 2011. Source

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