Effect of crystallization on creep behavior of glass fiber reinforced polyacetal

Takenobu Sakai, Koichi Yamada, Satoshi Somiya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Thermoplastic Polyoxymethylene (Polyacetal / POM) is one of the engineering plastics. It is very important for POM and its FRP to grasp accurately the viscoelastic behavior. Furthermore, POM is a crystalline polymer with very high crystallinity. Therefore, it is necessary to consider the effect of crystallization. The purpose of this study was to make clear the effect of crystallization on bending creep behavior of POM and glass fiber reinforced POM (GFRPOM). It is considered that there are two factors for polymer crystallization. One is crystallinity which is calculated by ratio of crystal and amorphous part, the other is crystal grain size which represents interior morphology. The creep test was performed using the materials which adjusted crystal grain size and crystallinity. As a result, these materials conformed to Arrhenius type of time-temperature superposition principle, and the effect of crystallinity on creep behavior had the time retardation effect. The effect of crystal grain size made the shape of master curves different every crystal grain size. Therefore, the different crystal grain size makes the different creep behavior. Only considering the effect of same crystal grain size, it was able to estimate the long term creep behavior on materials of arbitrary time, temperature and crystallinity.

Original languageEnglish
Title of host publicationSociety for Experimental Mechanics - 11th International Congress and Exhibition on Experimental and Applied Mechanics 2008
Pages980-985
Number of pages6
Publication statusPublished - 2008 Dec 22
Event11th International Congress and Exhibition on Experimental and Applied Mechanics 2008 - Orlando, FL, United States
Duration: 2008 Jun 22008 Jun 5

Publication series

NameSociety for Experimental Mechanics - 11th International Congress and Exhibition on Experimental and Applied Mechanics 2008
Volume2

Other

Other11th International Congress and Exhibition on Experimental and Applied Mechanics 2008
CountryUnited States
CityOrlando, FL
Period08/6/208/6/5

Keywords

  • Composite
  • Creep
  • Crystal grain size
  • Crystallinity
  • Crystallization
  • Polyacetal

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

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  • Cite this

    Sakai, T., Yamada, K., & Somiya, S. (2008). Effect of crystallization on creep behavior of glass fiber reinforced polyacetal. In Society for Experimental Mechanics - 11th International Congress and Exhibition on Experimental and Applied Mechanics 2008 (pp. 980-985). (Society for Experimental Mechanics - 11th International Congress and Exhibition on Experimental and Applied Mechanics 2008; Vol. 2).