NanoThermal Analyzer (NanoTA) Module for Atomic Force Microscopy (AFM) for Effective Characterization and Assessment of the Properties and Long-Term Performance of Novel FRP Materials

用于原子力显微镜 (AFM) 的纳米热分析仪 (NanoTA) 模块，可有效表征和评估新型 FRP 材料的特性和长期性能

• 批准号: RTI-2020-00476
• 负责人: Benmokrane, Brahim
• 金额: $ 10.9万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=693671
• 关键词: NanoThermal; Analyzer; NanoTA; Module; Atomic

Fiber reinforced polymers (FRPs) are used increasingly as concrete reinforcement as a cost effective alternative to steel bars. Given their corrosion resistance, light weight, and high strength, FRP bars have a 25year history in Canada in infrastructure such as bridge decks, parking garages, and continuous pavements. The lack of appropriate data about the long-term durability poses a major obstacle to broader acceptance and mass implementation of FRP bars. Moreover, the applicants are conducting new research on the development of FRP ecomaterials based on natural fibers and biosourced resins. These activities require detailing research work involving the characterization of fibersurface chemical treatments, and fiber/resin interface analysis. To address these concerns, the applicants will conduct research investigating the effects of various environmental/load/synergetic parameters on the long-term performance of new materials and FRP products incorporating a new class of fibers, resin systems with low diffusion, natural fibers, and control and conditioned (environmental exposure, loaded) FRP samples to assess degradation mechanisms (fiber, matrix, and interface dominated). In particular, matrix & fibermatrix interface degradation will be studied by Nano Thermal Analyzer (NanoTA) Module coupled with Atomic Force Microscope (AFM) technology. Moreover, projects involving the use of natural fibers or biosourced resins in ecocomposites will strongly benefit from this equipment for characterizing resin surface modification, surface microstructure and properties of reinforcing materials and interphase/interface behaviour of materials subjected to moist environments and aggressive media. Moreover, our new projects (Tier1 and Tier2 CRC of the coapplicants) involving natural fibers in ecocomposites will strongly benefit from this equipment for characterizing fibersurface modification, and fiber/resin chemical resistance in aggressive media. The proposed research will (1) provide new knowledge and scientific insights into the factors controlling the chemical resistance and durability of FRPs containing a new class of fibers and resins, modified natural fibers, and biosourced resins or nanomaterials such as nanocellulose or carbon nanotubes; (2) provide reliable models to predict the service life based on short-term laboratory aging tests and field test data from inservice structures; (3) validate natural fiber surface treatments and their effect on the behavior and durability of FRP ecocomposites; (4) yield new durability guidelines; and (5) influence upcoming codes and materials specifications nationally and internationally. 22 HQP (16 PhD and 2 MASc students, 4 postdoctoral fellows and 2 technicians) will receive advanced training on FRP composites and nanomaterials on this equipment. It is worth mentioning that the requested equipment will be used in accordance with NSERC's Statements on EDI.

纤维增强聚合物（FRP）越来越多地用作混凝土钢筋，作为钢棒的一种经济有效替代品。鉴于它们的耐腐蚀性，重量轻和高强度，FRP酒吧在加拿大在基础设施中具有25年的历史，例如桥梁甲板，停车场和连续的人行道。缺乏有关长期耐用性的适当数据为更广泛的接受和大规模实施FRP杆构成了主要障碍。此外，申请人正在对基于天然纤维和生物化树脂的FRP生态材料的开发进行新的研究。这些活动需要详细介绍涉及纤维表表面化学处理和纤维/树脂界面分析的研究工作。 为了解决这些问题，申请人将进行研究，以调查各种环境/负载/协同参数对新材料和FRP产品的长期性能的影响，这些产品结合了新的纤维，低扩散，天然纤维和天然纤维和的树脂系统控制和条件（环境暴露，加载）FRP样品，以评估降解机制（纤维，基质和界面主导）。特别是，矩阵和光纤界面降解将由Nano Thermal Analyzer（Nanota）模块以及原子力显微镜（AFM）技术研究。此外，涉及在生态复合材料中使用天然纤维或生物化树脂的项目将从该设备中受益匪浅，以表征树脂表面修饰，表面微观结构以及增强材料的特性以及受潮湿环境和积极媒体的材料的相间/界面行为。此外，我们的新项目（涉及生态复合材料的天然纤维的TIER1和TIER2 CRC）将从该设备中受益于纤维表表面修饰，以及在侵略性培养基中的纤维/树脂耐药性。 拟议的研究将（1）对控制含有新的纤维和树脂，改良的天然纤维以及生物化树脂或纳米材料（如纳米纤维素或碳纳米管）的FRP的化学耐化学性和耐用性的因素提供新的知识和科学见解； （2）提供可靠的模型，以基于短期实验室老化测试和内部服务结构的现场测试数据来预测服务寿命； （3）验证天然纤维表面处理及其对FRP生态复合材料的行为和耐用性的影响； （4）产生新的耐久性指南； （5）在国内和国际上影响即将到来的代码和材料规格。 22个HQP（16名博士学位和2名MASC学生，4名博士后研究员和2名技术人员）将在此设备上接受FRP复合材料和纳米材料的高级培训。值得一提的是，将根据NSERC在EDI上的声明使用所请求的设备。