The Experts below are selected from a list of 222 Experts worldwide ranked by ideXlab platform

Fabio Scherillo - One of the best experts on this subject based on the ideXlab platform.

  • Chemical surface Finishing of AlSi10Mg components made by additive manufacturing
    Manufacturing Letters, 2019
    Co-Authors: Fabio Scherillo
    Abstract:

    One of the most critical issues of a component realized by Additive Manufacturing is the surface quality. In particular, in case of high levels of roughness, the functionality of the component and its mechanical properties are significantly affected. Chemical Finishing offers the advantage of acting on the whole surface, without the need of tools. In this preliminary work several specimen of AlSi10Mg have been treated firstly by Chemical Machining to remove the gross irregularities, followed by Chemical Brightening to further smooth the surface. The results are promising; the surface parameters analyzed indicate that the treatment improves the surface quality.

Chun Wah Yuen - One of the best experts on this subject based on the ideXlab platform.

  • Static properties and moisture content properties of polyester fabrics modified by plasma treatment and Chemical Finishing
    Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 2008
    Co-Authors: C. W. Kan, Chun Wah Yuen
    Abstract:

    Low temperature plasma treatment has been conducted in textile industry and has some success in the dyeing and Finishing processes. In this paper, an attempt was made to apply low temperature plasma treatment to improve the anti-static property of polyester fabric. The polyester fabrics were treated under different conditions using low temperature plasma. An Orthogonal Array Testing Strategy was employed to determine the optimum treatment condition. After low temperature plasma treatment, the polyester fabrics were evaluated with different characterisation methods. Under the observation of scanning electron microscope, the surface structure of low temperature plasma-treated polyester fabric was seriously altered. This provided more capacity for polyester to capture moisture and hence increase the dissipation of static charges. The relationship between moisture content and half-life decay time for static charges was studied and the results showed that the increment of moisture content would result in shortening the time for the dissipation of static charges. Moreover, there was a great improvement in the anti-static property of the low temperature plasma-treated polyester fabric after comparing with that of the polyester fabric treated with commercial anti-static Finishing agent. (C) 2007 Elsevier B.V. All rights reserved.

  • static properties and moisture content properties of polyester fabrics modified by plasma treatment and Chemical Finishing
    Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms, 2008
    Co-Authors: Chun Wah Yuen
    Abstract:

    Low temperature plasma treatment has been conducted in textile industry and has some success in the dyeing and Finishing processes. In this paper, an attempt was made to apply low temperature plasma treatment to improve the anti-static property of polyester fabric. The polyester fabrics were treated under different conditions using low temperature plasma. An Orthogonal Array Testing Strategy was employed to determine the optimum treatment condition. After low temperature plasma treatment, the polyester fabrics were evaluated with different characterisation methods. Under the observation of scanning electron microscope, the surface structure of low temperature plasma-treated polyester fabric was seriously altered. This provided more capacity for polyester to capture moisture and hence increase the dissipation of static charges. The relationship between moisture content and half-life decay time for static charges was studied and the results showed that the increment of moisture content would result in shortening the time for the dissipation of static charges. Moreover, there was a great improvement in the anti-static property of the low temperature plasma-treated polyester fabric after comparing with that of the polyester fabric treated with commercial anti-static Finishing agent.

Asif H Sofi - One of the best experts on this subject based on the ideXlab platform.

  • a novel Chemical Finishing process for cashmere pva blended yarn made cashmere fabric
    Journal of Natural Fibers, 2013
    Co-Authors: A S M Raja, D B Shakyawar, P K Pareek, Priyanka Temani, Asif H Sofi
    Abstract:

    Cashmere fiber has to be blended with either nylon or water-soluble Polyvinyl alcohol (PVA) as a carrier fiber for spinning on worsted spinning system. The spun yarn is used for producing high-end fashion fabrics. The nylon or PVA portion is then removed from the fabric by treating with hydrochloric acid or hot water. The PVA based process is considered eco-friendly as compared to nylon-based process. However, the whiteness and handle of such fabric is inferior as compared to cashmere fabric produced from nylon-based process. This study attempts to improve the whiteness and handle of the fabric by using dilute sulfuric acid in place of hot water to remove PVA. The fabric produced from newly developed process shows improvement in whiteness index (28%) and handle (20%) than fabric of hot water-based process. It exhibits similar handle like that of cashmere fabric produced from nylon-based process. The new process uses only mild concentration of acid and can be considered as eco-friendly as hot water-based p...

  • A Novel Chemical Finishing Process for Cashmere/PVA-Blended Yarn-Made Cashmere Fabric
    Journal of Natural Fibers, 2013
    Co-Authors: A S M Raja, D B Shakyawar, P K Pareek, Priyanka Temani, Asif H Sofi
    Abstract:

    Cashmere fiber has to be blended with either nylon or water-soluble Polyvinyl alcohol (PVA) as a carrier fiber for spinning on worsted spinning system. The spun yarn is used for producing high-end fashion fabrics. The nylon or PVA portion is then removed from the fabric by treating with hydrochloric acid or hot water. The PVA based process is considered eco-friendly as compared to nylon-based process. However, the whiteness and handle of such fabric is inferior as compared to cashmere fabric produced from nylon-based process. This study attempts to improve the whiteness and handle of the fabric by using dilute sulfuric acid in place of hot water to remove PVA. The fabric produced from newly developed process shows improvement in whiteness index (28%) and handle (20%) than fabric of hot water-based process. It exhibits similar handle like that of cashmere fabric produced from nylon-based process. The new process uses only mild concentration of acid and can be considered as eco-friendly as hot water-based p...

N. E. Zamzam - One of the best experts on this subject based on the ideXlab platform.

Ali Hebeish - One of the best experts on this subject based on the ideXlab platform.

  • Synthesis of Reactive Polymers and Their Applications to Cotton Fabrics as Permanent Size
    Molecular Crystals and Liquid Crystals, 2020
    Co-Authors: Mohamed Hashem, Ali Hebeish
    Abstract:

    Abstract Dextrin was first polymerized-with acrylamide. The so obtained polymeric hybrid was converted to a reactive hybrid through methylolation of its amide groups by reacting the latter with formaldehyde. On the other hand, poly(vinyl alcohol) was converted to a reactive form via its reaction with N-methylol-acrylamide in alkaline medium. The two polymeric materials were then applied to cotton fabric with a view to achieve two objectives. The first is to prepare cotton fabric bearing permanent size. The second is to make use of these polymeric molecules in Chemical Finishing of cotton. In both cases the application involves acid catalyst. Besides, the application was carried out under different conditions including type and concentration of catalyst, curing time and the concentration of the reactive polymeric material. The treated fabrics were monitored for strength properties, size add-on, and durability in addition to crease recovery in case of the finished fabric.

  • Chemical Finishing of cotton. II: Combined easy-care/flame retardancy Finishing of cotton
    Cellulose Chemistry and Technology, 1994
    Co-Authors: Ali Hebeish, A. T. El-aref, M. Abou Shousha, N. E. Zamzam
    Abstract:

    Treatment of cotton fabric with etherified methylolated melamine alone or in admixture with dimethyloldihydroxy ethylene urea along with Pyrovatex Cp was investigated to render the cotton fabric crease resistant and flame retardant.

  • Chemical Finishing of cotton. III: MultiFinishing of cotton fabric in a single-stage process
    Cellulose Chemistry and Technology, 1994
    Co-Authors: Ali Hebeish, A. T. El-aref, A. Higazy, N. E. Zamzam
    Abstract:

    The technical feasability of multiFinishing of cotton fabric through conducting easy-care, flame retardancy and grafting treatments in one-stage process using the pad-dry-cure method was studied. The influence of concentrations of the multiFinishing formulation components (etherified methylolated melamine, Pyrovatex Cp, acrylamide, ammonium sulphate catalyst and potassium persulphate initiator), as well as curing temperature and time on the crease recovery, tensile properties and flammability of the multifinished fabric has been studied