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Publication
Estudo Termomecânico de Compósitos de Base Orgânica
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| 5.64 MB | Adobe PDF |
Authors
Abstract(s)
A utilização de materiais compósitos tem vindo a ganhar interesse em diversos setores
industriais, devido à sua versatilidade e à possibilidade de oferecer um bom equilíbrio entre
propriedades mecânicas, peso e sustentabilidade, em comparação com materiais
convencionais. Nesse contexto, a cortiça, aliada a uma matriz polimérica de PLA (ácido
polilático), apresenta-se como uma alternativa sustentável para a fabricação de peças,
combinando leveza, resistência e menor impacto ambiental.
Neste projeto investigou-se a influência da incorporação de cortiça num compósito de base
orgânica, PLA, comparando este material com o PLA virgem. Foram analisados dois
processos de fabrico: moldação por injeção e fabricação por fusão de filamento (FFF), de
modo a compreender as diferenças no desempenho mecânico e térmico dos materiais
utilizados.
Inicialmente foi realizada uma revisão bibliográfica abrangente para entender as
propriedades da cortiça e do PLA, bem como as principais técnicas de processamento
utilizadas. Em seguida, foram conduzidos ensaios para avaliar a influência da adição de
cortiça nas propriedades termomecânicas de uma matriz de PLA e comparar os resultados
entre os dois métodos de fabrico utilizados.
Os resultados demonstraram que a cortiça apresenta potencial para a fabricação de
compósitos sustentáveis, influenciando as propriedades do material de forma distinta
dependendo do processo de fabrico utilizado. A análise comparativa entre FFF e moldação
por injeção permite compreender as vantagens e limitações de cada método, fornecendo
informações valiosas para futuras aplicações industriais de compósitos de base orgânica.
Este estudo mostrou que a incorporação de cortiça em compósitos de PLA contribui para a
redução da massa e para a sustentabilidade dos materiais, embora o impacto nas propriedades
mecânicas varie consoante o processo de fabrico
The use of composite materials has been gaining interest in various industrial sectors due to their versatility and the ability to offer a good balance between mechanical properties, weight, and sustainability compared to conventional materials. In this context, cork combined with a PLA (polylactic acid) polymer matrix presents itself as a sustainable alternative for manufacturing parts, combining lightness, strength, and lower environmental impact. This project investigated the influence of incorporating cork into an organic-based composite (PLA), comparing this material with virgin PLA. Two manufacturing processes were analyzed: injection molding and fused filament fabrication (FFF), in order to understand the differences in mechanical and thermal performance of the materials used. Initially, a comprehensive literature review was carried out to understand the properties of cork and PLA, as well as the main processing techniques used. Then, tests were conducted to assess the influence of cork addition on the thermomechanical properties of a PLA matrix and to compare the results between the two manufacturing methods. The results showed that cork has potential for the production of sustainable composites, influencing the material properties in distinct ways depending on the manufacturing process used. The comparative analysis between FFF and injection molding helps to understand the advantages and limitations of each method, providing valuable information for future industrial applications of organic-based composites. This study showed that incorporating cork into PLA composites contributes to weight reduction and material sustainability, although the impact on mechanical properties varies depending on the manufacturing process.
The use of composite materials has been gaining interest in various industrial sectors due to their versatility and the ability to offer a good balance between mechanical properties, weight, and sustainability compared to conventional materials. In this context, cork combined with a PLA (polylactic acid) polymer matrix presents itself as a sustainable alternative for manufacturing parts, combining lightness, strength, and lower environmental impact. This project investigated the influence of incorporating cork into an organic-based composite (PLA), comparing this material with virgin PLA. Two manufacturing processes were analyzed: injection molding and fused filament fabrication (FFF), in order to understand the differences in mechanical and thermal performance of the materials used. Initially, a comprehensive literature review was carried out to understand the properties of cork and PLA, as well as the main processing techniques used. Then, tests were conducted to assess the influence of cork addition on the thermomechanical properties of a PLA matrix and to compare the results between the two manufacturing methods. The results showed that cork has potential for the production of sustainable composites, influencing the material properties in distinct ways depending on the manufacturing process used. The comparative analysis between FFF and injection molding helps to understand the advantages and limitations of each method, providing valuable information for future industrial applications of organic-based composites. This study showed that incorporating cork into PLA composites contributes to weight reduction and material sustainability, although the impact on mechanical properties varies depending on the manufacturing process.
Description
Keywords
Materiais compósitos Cortiça Moldação por injeção Fabrico aditivo