Browsing by Author "Ferreira, Rui Álvaro Santos Oliveira"
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- Avaliação e Melhoramento das Propriedades Anti-Soiling do Couro utilizado no Setor AutomóvelPublication . Ferreira, Rui Álvaro Santos Oliveira; Ribeiro, António Alfredo CrispimThe present thesis was written at Stahl Holdings, B.V., in Waalwijk- Netherlands, in partial fulfillment of the requirements for the degree of master’s in chemical engineering of the Instituto Superior de Engenharia do Porto (ISEP). Stahl formulated the theme of the project, along with the interested company. The results obtained from this project contributed to increase Stahl’s internal knowledge and share it with the interested parties. This project started with the formulation of a coating system, followed by its application, consecutive tests and results evaluation. This thesis regards the study of the anti-soiling properties of a Clean Top, by evaluating the impregnation resistance to indigo and pen ink. The tests were conducted according to the dye ingress standard of a specific OEM, soiling of a specific OEM and European VDA, using a Martindale abrasion tester, a Crockmeter and a Datacolor TM’s hardware and software. There were four samples tested, being two of them brown, two beige, and one of each color had Clean Top has the anti-soiling coat. It was expected that the application of a last anti-soiling system would show better results to the soiling and dye ingress tests, and that its performance changed over time. The worst results were shown by the dye ingress standard and lighter colors. The application of Clean Top improves greatly the anti-soiling properties, with small to no variation over time.