Effect of aggregation structure on fatigue characteristics of (Nylon 6/clay) composites

Atsushi Yamashita, Atsushi Takahara, Tisato Kajiyama

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

(Nylon 6/clay)hybrid (NCH) [(Nylon 6/montmorillonite)composite] with montmorillonite of 2wt% was prepared. Transmission electron microscopic (TEM) observation of NCH revealed that the silicate layers of montmorillonite were molecularly dispersed in NCH. Wide angle X-ray diffraction (WAXD) study also revealed that crystalline forms in both NCH and nylon 6 were the γ-form, and the crystallite size in NCH were larger than those in Nylon 6. Temperature dependence of dynamic viscoelasticity of NCH revealed that the magnitude of αa-absorption for NCH was smaller than that of Nylon 6 suggesting the restriction of thermal molecular motion in NCH due to the strong ionic interaction between Nylon 6 and silicate layers. The fatigue strength for NCH was greater than that of Nylon 6 reinforced with short glass-fiber (N6/SGF) under the corresponding fatigue conditions, even though they showed almost the same magnitude of modulus. Fatigue fracture criterion based on energy loss dissipated for irreversible structural change was investigated for NCH, and it was revealed that the total viscoelastic energy loss dissipated for irreversible structural change up to fatigue failure of NCH was larger than those for Nylon 6 and (N6/SGF). This indicates that NCH has more superior fatigue characteristics than Nylon 6 and (N6/SGF).

Original languageEnglish
Pages (from-to)117-122
Number of pages6
JournalNihon Reoroji Gakkaishi
Volume24
Issue number3
DOIs
Publication statusPublished - Jan 1 1996

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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