• Title/Summary/Keyword: multifilament fiber

Search Result 5, Processing Time 0.021 seconds

Study on Thermal Treatment of Hybrid Technical Yarns

  • Ishtiaque, S.M.;Das, A.
    • Fibers and Polymers
    • /
    • v.5 no.1
    • /
    • pp.25-30
    • /
    • 2004

  • The present paper reports the impact of thermal treatment on the characteristics of core-sheath type hybrid technical yarns. The core-sheath type hybrid yams are prepared using DREF-III technology. Polyester and glass multifilaments are used as core components whereas the cotton and polyester staple fibers are the sheath components wrapped around the core filament with different proportions to form a hybrid structure. The thermal treatment is carried out both in dry and in wet state under relaxed condition and the thermal shrinkage, sheath-slipping resistance and tensile and bending properties of hybrid yarns have been studied. Thermal treatment markedly increases the thermal shrinkage and sheath-slipping resistance of hybrid yarns with polyester multifilament in core, but insignificant effect for yarns with glass multifilament in core. Breaking elongation of hybrid yams with polyester multifilament in core increases with treatment temperature. The hybrid yarns with glass multifilament in core are least affected by thermal treatment.

  • PDF KSCI

Assessment of swelling pressure of stabilized Bentonite

  • Angin, Zekai;Ikizler, Sabriye Banu
    • Geomechanics and Engineering
    • /
    • v.15 no.6
    • /
    • pp.1219-1225
    • /
    • 2018

  • In this study, a comprehensive laboratory experimental programme was conducted on expansive soil with a high swelling potential to study the influence of different additive materials on swelling pressure and index properties. Lime, sand, multifilament fiber and fibrillated fiber were used for stabilization of expansive soil. Lime, sand and fibers were respectively added to the expansive soil at 0-7%, 0-80%, 0-0.5%. On each mixture that was prepared by the proportions mentioned above, Atterberg limits, compaction, and swelling pressure tests were conducted. From the result of these experiments, the swelling pressure-time relation could be replaced by a rectangular hyperbola established to facilitate the prediction of ultimate percent swelling with a few initial data points. The best type of additive and its optimum ratio for engineering purposes could be estimated rapidly by this approach.

  • https://doi.org/10.12989/gae.2018.15.6.1219 인용 KSCI