Engineering Environmentally Durable Carbon Fiber Reinforced Vinyl Ester Matrix Composites

该项目是工程碳纤维增强乙烯酯复合材料的跨学科计划，以满足基础设施严格的环境耐久性需求。复合材料将根据化学成分和复合材料结构，特别是纤维基质界面设计，专门设计用于承受长期潮湿和紫外线暴露。该项目包括改性树脂和复合材料的开发，湿热和紫外线实验室暴露，环境现场测试，以及作为暴露功能的残余机械性能分析。这是对基础设施用途的一类重要候选材料的第一次全面研究，其中成分化学，环境暴露和降解机制是联系在一起的。NIST将与该项目合作，为实验室和现场实验提供最先进的紫外线测试设备和专业知识。Tom's Creek大桥项目是一个乙烯基酯/碳/玻璃车辆桥，于1997年夏天在弗吉尼亚州布莱克斯堡建造，将作为现场试验场。这项工作还将与主要树脂供应商密切合作进行，以确保所考虑的修改具有大批量生产的潜力，并确保有效地将技术转让给适当的生产商。实验计划是设计和制造复合材料，老化材料，并表征损伤。＊＊＊

9713943 Riffle This project is an interdisciplinary plan for engineering carbon fiber reinforced vinyl ester composites to meet the rigorous environmental durability needs for infrastructure. Composite materials will be designed specifically to withstand long-term moisture and UV exposure based on both chemical constituents and composite construction, particularly fiber-matrix interface design. The project encompasses modified resin and composite development, hygrothermal and ultraviolet laboratory exposure, environmental field testing, and residual mechanical property analyses as a function of exposure. This is the first comprehensive study of an important class of candidate materials for infrastructural uses where the constituent chemistry, the environmental exposure, and the mechanics of degradation are linked. NIST will provide state-of-the-art ultraviolet testing facilities and expertise for both the laboratory and field experiments in collaboration with the project. The Tom's Creek Bridge project, a vinyl ester/carbon/glass vehicular bridge constructed in Blacksburg, VA during the summer of 1997, will be leveraged as a field-testing site. The work will also be done in close collaboration with major resin suppliers to insure that modifications under consideration have potential for large volume production, and to insure that technology is transferred to appropriate producers efficiently. The experimental plan is to design and fabricate composites, age materials, and characterize damage. ***