Banca de DEFESA: PABLO RODRIGO PADILHA HONÓRIO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : PABLO RODRIGO PADILHA HONÓRIO
DATA : 24/10/2017
HORA: 08:00
LOCAL: Sala de aulas do PPGCEM
TÍTULO:

DEVELOPMENT OF MARKERS BY TRACES OF CHEMICAL ELEMENTS FOR IDENTIFICATION OF ELECTRICAL CABLES VIA X-RAY FLUORESCENCE.

PALAVRAS-CHAVES:

Chemical markers, Identification, XRF, Cr₂O₃.

PÁGINAS: 78
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Materiais e Metalúrgica
RESUMO:

The present work has as objective the study and development of markers based on traces of chemical elements for the identification of electrical cables of aluminum and copper by means of a X-ray fluorescence (XRF) portable equipment. The development of chemical markers has as purpose try to solve or minimize the problem of theft of electric cables in the country, which has caused huge losses and disorders for companies and population. In this sense, the markers were developed using a polyester-based varnish and an epoxy resin, which were doped with Cr₂O₃ particles. The markers were produced with additions of 1 %, 2 %, 5 % and 10 % of bulk weight of Cr₂O₃ in polymer resins and they were applied on cables of bare aluminum and isolated copper. After the markers were applied, the cables were analyzed via XRF, then fused, and again analyzed by XRF, whit the objective to check the remained of the Cr element, even after a possible recycling of cables. The results showed that the chemical markers are efficient for identifying the Cr element via laboratory FRX even with only 1 % bulk addition of Cr₂O₃ on the surface of Al and Cu cables, with both types of resins, however, it is not sufficient for identification after re-fusion of the conductors. The markers containing 2 % and 5 % of Cr₂O₃ Showed little efficiency in the identification of Cr after re-fusion. Only the markers made with polyester resin containing 10 % of Cr₂O₃ proved to be efficient after the Al re-fusion and were identified in all analyzed samples.

MEMBROS DA BANCA:
Presidente - 2156996 - AUGUSTO JOSE DE ALMEIDA BUSCHINELLI
Externo à Instituição - JORGE MAGNER LOURENÇO - IFRN
Externo ao Programa - 1938946 - NICOLAU APOENA CASTRO