Aplicação de zamac-8 em molde-protótipo usinado e análise do moldado em polipropileno

• Ano de defesa: 2011
• Autor(a) principal: Gryzinski, Ismael
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Tecnológica Federal do Paraná; Curitiba; Programa de Pós-Graduação em Engenharia Mecânica e de Materiais
• Palavras-chave em Português: Ligas de zinco; Moldagem por injeção de plástico; Polimerização - Propriedades mecânicas; Termoplásticos; Produtos novos; Engenharia mecânica; Zinc alloys; Injection molding of plastics; Polymerization - Mechanical properties; Thermoplastics; New products; Mechanical engineering
• Link de acesso: http://repositorio.utfpr.edu.br/jspui/handle/1/398

The reason for the existence of a prototype mold is to obtain a quickly injected with the same material and using the same manufacturing process of the final product with low cost. Their models can serves as prototypes, pilot batches, preseries or the need to cover a lower demand for products or small batches. Criteria for manufacturability and mechanical qualities are important in the manufacture of prototype mold, but these criteria are only valid if this mold is capable of producing injected with a similar quality to the product injected into a conventional mold. However, there are few studies concerning the use of alternative material for prototype mold and the influence of that material into the product injected. Thus, the main objective of this study is to characterize a prototype mold machined in zinc alloy (Zamak-8), by analyzing the physical properties and mechanical properties of the polypropylene (PP) injected into this tool and compare it injected into the steel. The results show that the PP injected into zamac-8 has characteristics similar to the injected in steel mold, without contamination. Thus, this material can be recommended for the purpose for injection mold.