Influence of the temperature on the fracture energy of a methacrylate adhesive for mining applications

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

Moller, J (Autor) Outra; Hunter, R (Autor) Outra; Molina, J (Autor) Outra; Vizán, A (Autor) Outra; Peréz, J (Autor) Outra; da Silva, LFM (Autor) FEUP

Revista

Título: Applied Adhesion Science

Vol. 3

Editora: Springer Nature

Indexação

Scopus - 7 Citações

Outras Informações

ID Authenticus: P-00M-H5V

DOI: 10.1186/s40563-015-0041-5

Abstract (EN): The effects of the increase in temperature are of great importance when evaluating the strength of an adhesive. Some processes in mining, such as copper electro-wining, produce thermal changes that modify the working conditions of equipment and structures; these elements are exposed to temperatures that can reach up to 80 °C. The study presented here aims to determine the behavior, under fracture of mode I type, of a two-component adhesive regularly used to join pieces in acid mist extraction systems. For this purpose, specimens for a double cantilever beam test were produced and tested in an Instron tensile machine, which includes an environmental chamber to control the test temperature; each lot of specimens was tested at 20, 50 and 80 °C respectively, at a speed of 1 mm/min. From the results obtained, it is possible to appreciate that the adhesive at 50 °C decreased its strength by 14 % with respect to those at the reference temperature of 20 °C. The same tendency was observed in the specimens tested at 80 °C, in which there was a pronounced reduction in strength quantified by 26 %. Moreover, deformation in the adhesive grew with the increase in temperature, acquiring greater plasticity and modifying its cohesive properties. © 2015, Moller et al. All Right Reserved.

Idioma: Inglês

Tipo (Avaliação Docente): Científica