Properties of composite polypropylene fibers for technical application

  • Horbanová Ľ
  • Ujhelyiová A
  • Ryba J
 et al. 
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This work focuses on the properties of polypropylene concentrates and fibers modified by inorganic additive. Polypropylene staple fibers are assigned as reinforcement of concrete to transform and absorb deformation energy. Modification of polypropylene fibers is necessary to ensure more intense anchoring of fibers in cement matrix. In this work the impact of inorganic additive on the rheological properties of polypropylene and polypropylene concentrate as well as on thermal, thermomechanical and mechanical properties of composite polypropylene fibers is investigated. At rheological properties the index pseudoplasticity of polypropylene and polypropylene concentrates were comparable. Thermomechanical analysis shows, that temperature of fiber deformation was higher at higher drawing ratio of composite polypropylene fibers containing in organic additives. Mechanical pr operties of modified fibers without stabilization and stabilized at 95°C for 1 minute achieved higher values at drawing ratio 4.0. Surface modification of fibers co ntaining inorganic additives was noticeable.

Author-supplied keywords

  • inor ganic add
  • modification
  • polypropylene fibers

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  • Ľuba Horbanová

  • Anna Ujhelyiová

  • Jozef Ryba

  • Ján Lokaj

  • Peter Michlík

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