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Printed circuit boards: a review on the perspective of sustainability
Cabrera Marrero, José M.; Canal Marques, André; Malfatti, Célia de Fraga
Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics
Modern life increasingly requires newer equipments and more technology. In addition, the fact that society is highly consumerist makes the amount of discarded equipment as well as the amount of waste from the manufacture of new products increase at an alarming rate. Printed circuit boards, which form the basis of the electronics industry, are technological waste of dif fi cult disposal whose recycling is complex and expensive due to the diversity of materials and components and their dif fi cult separation. Currently, printed circuit boards have a fi xing problem, which is migrating from traditional Pb e Sn alloys to lead-free alloys without de fi nite choice. This replacement is an attempt to minimize the problem of Pb toxicity, but it does not change the problem of separation of the components for later reuse and/or recycling and leads to other problems, such as temperature rise, delamination, fl aws, risks of mechanical shocks and the formation of “ whiskers ” . This article presents a literature review on printed circuit boards, showing their structure and materials, the environmental problem related to the board, some the different alternatives for recycling, and some solutions that are being studied to reduce and/or replace the solder, in order to minimize the impact of solder on the printed circuit boards.
Àrees temàtiques de la UPC::Enginyeria electrònica::Impacte ambiental
Electronic waste
Printed circuits
Scrap metals
Environmental problem
Waste electrical and electronic equipment
Printed circuit boards
Solder replacement
Residus metàl·lics
Circuits elèctrics
Attribution-NonCommercial-NoDerivs 3.0 Spain

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