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Abiotic Degradation of Recycled Polymer/Wood Composites Exposed to Outdoor Applications

Andre Luis Catto Scheyla Hermann de Almeida Ruth Marlene Campomanes Santana

材料科学与工程：中英文A版, 2014, Vol.4 (11), p.321-329

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  • Título:
    Abiotic Degradation of Recycled Polymer/Wood Composites Exposed to Outdoor Applications
  • Autor: Andre Luis Catto Scheyla Hermann de Almeida Ruth Marlene Campomanes Santana
  • Assuntos: 再生 ; 室外 ; 应用 ; 木塑复合材料 ; 机械性能 ; 聚合物 ; 自然风化 ; 非生物降解
  • É parte de: 材料科学与工程：中英文A版, 2014, Vol.4 (11), p.321-329
  • Notas: Wood plastic composite, color change, mechanical properties, surface properties, natural weathering.
    Wood-plastic composites （WPCs） have received increasing attention during the last decades, because of many advantages related to their use. Some of their main applications are represented by outdoor furnishing and decking; therefore, it is important to assess their behavior under Ultra Violet （UV） exposure. In this work, polypropylene/wood flour composites were prepared and their resistance to photo-oxidation investigated. The composites were prepared by extrusion and injection molding, and were subjected to mechanical and rheological tests, chemical analysis and colorimetric measurements. The results showed that the composites retained a higher fraction of the original mechanical properties after natural weathering. The study showed that for natural weathering, longer exposure time increased the degree of color change （and lightness）. Weathering WPC exhibited decreased in mechanical properties when compared to
  • Descrição: Wood-plastic composites （WPCs） have received increasing attention during the last decades, because of many advantages related to their use. Some of their main applications are represented by outdoor furnishing and decking; therefore, it is important to assess their behavior under Ultra Violet （UV） exposure. In this work, polypropylene/wood flour composites were prepared and their resistance to photo-oxidation investigated. The composites were prepared by extrusion and injection molding, and were subjected to mechanical and rheological tests, chemical analysis and colorimetric measurements. The results showed that the composites retained a higher fraction of the original mechanical properties after natural weathering. The study showed that for natural weathering, longer exposure time increased the degree of color change （and lightness）. Weathering WPC exhibited decreased in mechanical properties when compared to no weathering WPCs respectively. From this study, relationships between chemical and color changes
  • Idioma: Chinês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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