Structural Composites with High Biobased Content

具有高生物基含量的结构复合材料

• 批准号: 1130590
• 负责人: Dean Webster
• 金额: $ 30万
• 依托单位: North Dakota State University Fargo
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-15 至 2015-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1130590&HistoricalAwards=false
• 关键词: Structural; Composites; Biobased; Content

Materials derived from renewable resources have increasing interest today since they can help reduce our dependence on petrochemical based materials. With any new composite material system, understanding the properties as a function of matrix resin structure and composition as well as fiber type, surface functionalization, and fiber loading is critical. Thus, the focus of the project is to understand the impact of critical design variables on performance of composites using a new biobased resin system in combination with natural fibers as reinforcement. Preliminary experiments using this new resin system along with natural fibers have shown that the composites have promising structural properties and can lead to a biobased composite system with high biocontent, 60% or greater. Structure-property studies of the matrix resin system will be carried out to understand the impact of variables such as epoxy functionality, anhydride crosslinker, catalyst and loading, and curing conditions on properties such as modulus, impact resistance, glass transition temperature, thermal stability, water sorption, and durability. Composites with glass fiber reinforcement along with natural fibers will be prepared and the effect of fiber treatment, fiber loading on the properties will be evaluated. The durability of the matrix resin and resulting composite systems will be explored. Structure-process-property relationships will be established for the biocomposites produced with regards to durability for use as a structural construction grade material.The use of materials derived largely from agricultural products is a key component of a sustainable future and can lead to a reduction of dependence on petrochemical derived materials, reduced energy usage, and a reduction in carbon emissions. The scientific results of this project can lead to the development of a new biobased structural composite material system meeting the goals of sustainability as well as the performance requirements for structural applications. The focus of the project is to understand the influence of each component of the biobased composite system (resin, fiber, and resin-fiber interface) on important properties of the composite as they relate to structural performance and durability.

如今，源自可再生资源的材料越来越受到人们的关注，因为它们可以帮助减少我们对石化材料的依赖。对于任何新的复合材料系统，了解其性能与基体树脂结构和成分以及纤维类型、表面功能化和纤维负载的函数关系至关重要。 因此，该项目的重点是了解关键设计变量对使用新型生物基树脂系统与天然纤维作为增强材料的复合材料性能的影响。使用这种新型树脂系统与天然纤维的初步实验表明，该复合材料具有良好的结构性能，并且可以产生具有高生物含量（60％或更高）的生物基复合材料系统。将进行基体树脂体系的结构-性能研究，以了解环氧官能度、酸酐交联剂、催化剂和负载等变量以及固化条件对模量、抗冲击性、玻璃化转变温度、热稳定性、吸水性和耐久性等性能的影响。将制备玻璃纤维增​​强材料与天然纤维的复合材料，并评估纤维处理、纤维负载对性能的影响。将探讨基体树脂和所得复合材料系统的耐久性。所生产的生物复合材料将在耐久性方面建立结构-工艺-性能关系，以用作结构建筑级材料。使用主要源自农产品的材料是可持续未来的关键组成部分，可以减少对石化衍生材料的依赖，减少能源使用和碳排放。该项目的科学成果可以促进新型生物基结构复合材料系统的开发，满足可持续性目标以及结构应用的性能要求。该项目的重点是了解生物基复合材料系统的每个组件（树脂、纤维和树脂-纤维界面）对复合材料重要性能的影响，因为它们与结构性能和耐久性有关。