Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/20068
Título: | Assessment of injection moulded parts of PP/nanoclay produced with hybrid moulds |
Autor(es): | Neves, A. F. Salmoria, G. V. Ahrens, C. H. Pouzada, A. S. Silva, M. A. |
Palavras-chave: | Polypropylene Nanoclay Morphology Hybrid moulds |
Data: | 2013 |
Editora: | Trans Tech Publications Ltd |
Revista: | Materials Science Forum |
Resumo(s): | The concept of hybrid mould combines the conventional techniques of mould manufacturing and Rapid Prototyping and Rapid Tooling, resorting to non-conventional materials for producing moulding blocks, e. g., epoxy resin composites. Composites based on an epoxy system with 15% weight fraction of short steel fibres (SSF) were considered adequate for improving the performance of moulding blocks. The epoxy/short steel fibre composite moulding blocks were produced by vacuum casting in silicone moulds. Polypropylene (PP) was mixed with a commercial PP masterbatch with 50% of nanoclay and injected in a hybrid mould under various processing conditions. These were chosen from a central composite design with 15 experiments. The moulding microstructure was assessed by polarized light microscopy and differential scanning calorimetry. The skin-core morphology was observed and suggested that the low thermal conductivity of the epoxy composite produces a thinner skin when compared to all-steel moulds. The nanoclay concentration was the variable with the most significant effect on skin thickness and crystallinity. The addition of 1 wt% nanoclay under certain processing conditions favours the formation of β-form spherulites and the increase of crystallinity. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/20068 |
DOI: | 10.4028/www.scientific.net/MSF.730-732.963 |
ISSN: | 0255-5476 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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MSF.730-732.963.pdf Acesso restrito! | Documento principal | 1,13 MB | Adobe PDF | Ver/Abrir |