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Stability evaluation of polyurethane coatings by gamma irradiation

R. PÂRVU1, C. PODINĂ2, T. ZAHARESCU3,* , S. JIPA4

Affiliation

  1. Applied Systems, 1 Pictor Negulici, Craiova 200060, Romania
  2. University of Bucharest, Faculty of Chemistry, 4-12 Elisabeta Av., Bucharest 030018, Romania
  3. INCDIE ICPE CA, 313 Splaiul Unirii P. O. Box 149, Bucharest 030138, Romania
  4. “Valachia” University of Targoviste, 18-22 Unirii Av., Targoviste 130082, Romania

Abstract

Polyurethane coating materials were subjected to the action of gamma radiation for the assessment of stability under hard conditions of operation. Two sorts of urethane systems cured at room temperature were tested by chemiluminescence method. The rates of oxidation were evaluated for characterization of long term service. The irradiation performed in dry and wet environments revealed the contribution of water to the modification of chemical strength of polyurethane strength.

Keywords

Polyurethane coatings, Antioxidant depletion, Chemiluminescence.

Citation

R. PÂRVU, C. PODINĂ, T. ZAHARESCU, S. JIPA, Stability evaluation of polyurethane coatings by gamma irradiation, Optoelectronics and Advanced Materials - Rapid Communications, 4, 11, November 2010, pp.1815-1818 (2010).

Submitted at: Sept. 6, 2010

Accepted at: Nov. 10, 2010