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China Foundry

, Volume 15, Issue 2, pp 145–151 | Cite as

Studies on thermal decomposition of phenol binder using TG/DTG/DTA and FTIR-DRIFTS techniques in temperature range 20–500 °C

  • Artur Bobrowski
  • Dariusz Drożyński
  • Beata Grabowska
  • Karolina Kaczmarska
  • Żaneta Kurleto-Kozioł
  • Marcin Brzeziński
Overseas Foundry
  • 20 Downloads

Abstract

This paper presents results of thermoanalytical and structural research on phenolic binder used in foundry for the preparation of moulding sand. The binder has been prepared based on resole type phenolic resin with the addition of ester hardener. The aim of the study was to determine the structural changes taking place in the phenolic binder under the influence of temperature. Results show that in the investigated range of temperatures, phenolic binder exhibits three exothermic thermal effects accompanying the decomposition process. The test results using the Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) technique show that the addition of a hardener stabilizes the binder structure within methylene bridges. The reduction in the reaction rate observed in the DTA curve at about 330 °C can be associated with the formation of gaseous products by decomposition of the binder or, as suggested by the literature data, the formation of triple bonds and CN-HCN groups.

Keywords

phenolic resin thermal decomposition IR spectroscopy thermal analysis DRIFTS 

Document Code

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Copyright information

© Foundry Journal Agency and Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Artur Bobrowski
    • 1
  • Dariusz Drożyński
    • 1
  • Beata Grabowska
    • 1
  • Karolina Kaczmarska
    • 1
  • Żaneta Kurleto-Kozioł
    • 1
  • Marcin Brzeziński
    • 1
  1. 1.AGH University of Science and TechnologyFaculty of Foundry EngineeringKrakówPoland

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