LOCAL NANO-MECHANICAL PROPERTIES OF CROSS-LINKED POLYBUTYLENE

Authors

  • Martin Ovsík Tomas Bata University in Zlin, Department of Production Engineering, nám. T. G. Masaryka 5555, 760 01 Zlín, Czech Republic
  • Michal Staněk Tomas Bata University in Zlin, Department of Production Engineering, nám. T. G. Masaryka 5555, 760 01 Zlín, Czech Republic
  • Adam Dočkal Tomas Bata University in Zlin, Department of Production Engineering, nám. T. G. Masaryka 5555, 760 01 Zlín, Czech Republic
  • Petr Fluxa Tomas Bata University in Zlin, Department of Production Engineering, nám. T. G. Masaryka 5555, 760 01 Zlín, Czech Republic

DOI:

https://doi.org/10.14311/APP.2020.27.0112

Keywords:

Cross-linked, electron radiation, hardness, nano-indentation, polybutylene terephthalate

Abstract

Cross-linking is a process in which polymer chains are associated through chemical bonds. The cross-linking level can be adjusted by the irradiation dosage and often by means of a cross-linking booster. The polymer additional cross-linking influences the surface nano and micro layers in the way comparable to metals during the thermal and chemical-thermal treatments. Polybutylene terephthalate (PBT) can be found in a group of structural polymers, which are often used in industry, especially in automotive. Applying the technology of electron radiation induces a creation of 3D network structure, which improves the local mechanical properties. These were later measured by a depth sensing indentation (DSI) test. This state of the art method is based on immediate detection of indentation depth in relation to applied force. The creation of 3D network caused an increase in nano-mechanical properties values, such as indentation hardness and indentation modulus, in comparison to the virgin material. The indentation hardness rose by 80%, while the indentation modulus elevated by 62%. The selected structural materials, e.g. PBT, were modified by the electron irradiation in a positive way and as such could be moved to a group of high performance materials.

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Published

2020-06-11

Issue

Vol. 27 (2020): Proceedings of the 14th International Conference on Local Mechanical Properties - LMP 2019

Section

Articles

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