Publication detail

Influence of Processing Conditions on Morphology and Mechanical Properties of PP Particulate Composites Influence of Processing Conditions on Morphology and Mechanical Properties of PP Particulate Composites Influence of Processing Conditions on Morphology and Mechanical Properties of PP Particulate Composites

NEZBEDOVÁ, E. KRČMA, F. POSPÍŠIL, L. LACH, R.

Original Title

Influence of Processing Conditions on Morphology and Mechanical Properties of PP Particulate Composites Influence of Processing Conditions on Morphology and Mechanical Properties of PP Particulate Composites Influence of Processing Conditions on Morphology and Mechanical Properties of PP Particulate Composites

English Title

Influence of Processing Conditions on Morphology and Mechanical Properties of PP Particulate Composites Influence of Processing Conditions on Morphology and Mechanical Properties of PP Particulate Composites Influence of Processing Conditions on Morphology and Mechanical Properties of PP Particulate Composites

Type

conference paper

Language

en

Original Abstract

Polymeric particulate composites with thermoplastics, especially polypropylene (PP) matrix and mineral fillers, are of great practical importance due to their simple possibility of modifying mechanical properties and reducing the price/volume ratio of resulting material. Fillers often do not directly face the matrix molecules in their bulk macro conformations. The matrix molecules near the surface of the fillers may have different macro conformations, appear as different thermodynamic phase, or even they have a different chemical composition. These regions are called interphases. Obviously, the adhesive must wet the particles to be joined in order that a strong bond might result. Particle surfaces are often pre-treated or activated to improve their adhesion to the matrix polymer. Both filler properties and interface properties have a great effect on the mechanical properties, primarily on stiffness and toughness. Good final dispersion of the filler particles plays also very important role. The system PPH + CaCO3 was used in the presented study. The commercial available CaCO3 nano particles are of tens nm dimension but they typically form much bigger agglomerates with the size up to 10 microns. Using the special procedure both for modifying the surface of particles as well as processing conditions we achieve to prepare the composites with well dispersed particles with agglomerates smaller than 100 nm, i.e. we were able to use nanofillers. The influence of morphology on mechanical properties was studied and compared with the commercially available system.

English abstract

Polymeric particulate composites with thermoplastics, especially polypropylene (PP) matrix and mineral fillers, are of great practical importance due to their simple possibility of modifying mechanical properties and reducing the price/volume ratio of resulting material. Fillers often do not directly face the matrix molecules in their bulk macro conformations. The matrix molecules near the surface of the fillers may have different macro conformations, appear as different thermodynamic phase, or even they have a different chemical composition. These regions are called interphases. Obviously, the adhesive must wet the particles to be joined in order that a strong bond might result. Particle surfaces are often pre-treated or activated to improve their adhesion to the matrix polymer. Both filler properties and interface properties have a great effect on the mechanical properties, primarily on stiffness and toughness. Good final dispersion of the filler particles plays also very important role. The system PPH + CaCO3 was used in the presented study. The commercial available CaCO3 nano particles are of tens nm dimension but they typically form much bigger agglomerates with the size up to 10 microns. Using the special procedure both for modifying the surface of particles as well as processing conditions we achieve to prepare the composites with well dispersed particles with agglomerates smaller than 100 nm, i.e. we were able to use nanofillers. The influence of morphology on mechanical properties was studied and compared with the commercially available system.

Keywords

polypropylene particulate composites, processing, morphology, properties

RIV year

2013

Released

26.06.2013

Publisher

Uniuversity of Patras

Location

Patras

ISBN

978-960-88104-3-3

Book

Proceedings of the 3rd International Conference of Engineering Against Failure

Pages from

48

Pages to

56

Pages count

9

BibTex


@inproceedings{BUT101799,
  author="Eva {Nezbedová} and František {Krčma} and Ladislav {Pospíšil} and Ralf {Lach}",
  title="Influence of Processing Conditions on Morphology and Mechanical Properties of PP Particulate Composites Influence of Processing Conditions on Morphology and Mechanical Properties of PP Particulate Composites Influence of Processing Conditions on Morphology and Mechanical Properties of PP Particulate Composites",
  annote="Polymeric particulate composites with thermoplastics, especially polypropylene (PP) matrix and mineral fillers, are of great practical importance due to their simple possibility of modifying mechanical properties and reducing the price/volume ratio of resulting material. Fillers often do not directly face the matrix molecules in their bulk macro conformations. The matrix molecules near the surface of the fillers may have different macro conformations, appear as different thermodynamic phase, or even they have a different chemical composition. These regions are called interphases. Obviously, the adhesive must wet the particles to be joined in order that a strong bond might result. Particle surfaces are often pre-treated or activated to improve their adhesion to the matrix polymer. Both filler properties and interface properties have a great effect on the mechanical properties, primarily on stiffness and toughness. Good final dispersion of the filler particles plays also very important role.
The system PPH + CaCO3 was used in the presented study. The commercial available CaCO3 nano particles are of tens nm dimension but they typically form much bigger agglomerates with the size up to 10 microns. Using the special procedure both for modifying the surface of particles as well as processing conditions we achieve to prepare the composites with well dispersed particles with agglomerates smaller than 100 nm, i.e. we were able to use nanofillers. The influence of morphology on mechanical properties was studied and compared with the commercially available system.",
  address="Uniuversity of Patras",
  booktitle="Proceedings of the 3rd International Conference of Engineering Against Failure",
  chapter="101799",
  howpublished="electronic, physical medium",
  institution="Uniuversity of Patras",
  year="2013",
  month="june",
  pages="48--56",
  publisher="Uniuversity of Patras",
  type="conference paper"
}