Development and characterization of sawdust and sisal fiber reinforced vegetable based polyurethane foam hybrid composites

ABSTRACT

Polyurethane foam derived from vegetable oils can be used as a matrix in composites with Pinus taeda sawdust and Agave sisalana fibers. The aim of this work was to obtain and characterize polyurethane foam composites derived from vegetable oil reinforced with Pinus taeda sawdust and dispersed sisal short fiber. The composites were produced in five different proportions and were analyzed by images, mechanical and physical tests. Composites with 50% foam, 37.5% sawdust and 12.5% sisal had the highest bending resistance, 11.31 MPa, and the best results after 2 hours of immersion. Composites were considered suitable for furniture and craft use.

摘要

植物油聚氨酯泡沫塑料可作为火炬松锯末和剑麻纤维复合材料的基体. 以火炬松锯末和分散剑麻短纤维增强植物油为原料, 制备了聚氨酯泡沫复合材料, 并对其进行了表征. 制备了五种不同比例的复合材料, 并通过图像, 力学和物理试验进行了分析. 泡沫50%, 锯末37.5%, 剑麻12.5%的复合材料抗弯强度最高, 为11.31mpa, 浸泡2h后效果最好. 复合材料被认为适用于家具和工艺品.

KEYWORDS:

• Rigid foam
• sawdust
• sisal
• vegetable-based polyurethane
• mechanical properties
• natural fibers

关键词:

• 硬质泡沫
• 木屑
• 剑麻
• 植物性聚氨酯
• 机械性能
• 天然纤维

Acknowledgments

CAPES/Brazil, CNPq/Brazil, Araucária Foundation/Brazil, Multi-User Center for Materials Characterization – CMCM of UTFPR-CT/Brazil, Laboratory of Polymers and Composites – LAPOC of UTFPR-CT/Brazil, Laboratory of Wood Panels of UFPR/Brazil, Laboratory of Dendrochronology– ESALQ/USP/Piracicaba/Brazil, Braspine Madeiras/Brazil.

Additional information

Funding

This work was supported by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior [88882.432231/2019-01].