Fabrication of highly isotactic polypropylene fibers to substitute asbestos in reinforced cement composites and analysis of the fiber formation mechanism

Tetsuya Takahashi, Yoko Tsurunaga, Tetsuo Kondo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Highly isotactic polypropylene (PP) is currently studied as a cement-reinforcement fiber that could potentially be substituted for asbestos because of its resistance to prolonged high-temperature curing. The higher the isotacticity of the PP fiber is, the higher the tensile modulus and breaking strength of the cured fiber are. The PP fiber that exhibits a isotacticity of 99.6% (XI) and draw ratio of 6.0 retains a tensile modulus of 4.23 GPa, even after high-temperature curing at 175°C for 5 h. PP fiber is cut into 6-mm lengths and dispersed throughout a cement mixture to prepare a reinforced cement composite. The mixture is cured in an autoclave at 175°C for 5 h. The Charpy impact strength and flexural strength of the obtained cement composite tends to increase with increasing PP isotacticity.

Original languageEnglish
Pages (from-to)981-988
Number of pages8
JournalJournal of Applied Polymer Science
Volume130
Issue number2
DOIs
Publication statusPublished - Oct 15 2013

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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