Matrix Confinement Effects in Composites and Nanocomposites: Experiments and Molecular Modeling

复合材料和纳米复合材料中的基体限制效应：实验和分子建模

• 批准号: 0826437
• 负责人: Sindee Simon
• 金额: $ 25万
• 依托单位: Texas Tech University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2011-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0826437&HistoricalAwards=false
• 关键词: Matrix; Confinement; Effects; Composites; Nanocomposites

The research objective of this award is to understand matrix confinement effects in thermosetting composite and nanocomposite materials, and in particular, to evaluate the importance of intrinsic size effects, surface effects, and residual stress effects. The scientific approach involves using a novel model for thermosetting composites and nanocomposites ? cure and constraint of the thermosetting resins in nanopores. Cure in nanopores is the inverse problem of thermosets cured in the presence of nanoparticles and nanotubes; however, the nanoconfined system is a simpler model because issues of agglomeration and dispersion of nanoparticles are not relevant and because a broader range of surface interactions can be realized. Experiments and complementary molecular modeling will focus on isolating intrinsic size effects, surface effects, and residual stress effects by changing monomer structure, resin/nanopore surface interactions, nanopore size, and the coefficient of thermal expansion of the confining nanoporous matrix. Deliverables will include the development and dissemination of new scientific knowledge, training of graduate engineering students, and development of a week-long module on composites for junior high school girls.If successful, the results of this research will facilitate design and optimization of nanocomposite and composite systems by providing a better understanding of confinement effects on matrix properties. Example applications include composites and nanocomposites used in aerospace and nanoelectronics. The results of the research will be disseminated by presentations at national and regional forums and by publication in both conference proceedings and archival journals. The graduate engineering students involved in the research will receive training in all scientific aspects of the project, as well as professional development training. A week-long module on composites for the junior high school girls interested in science and engineering will also be developed.

该奖项的研究目标是了解热固性复合材料和纳米复合材料的基质限制效应，尤其是评估内在尺寸效应，表面效应和残留应力效应的重要性。 科学方法涉及使用新型模型用于热固性复合材料和纳米复合材料？纳米孔中热固性树脂的治愈和约束。 纳米孔中的治疗是在纳米颗粒和纳米管存在下固化的热眠器的反问题。但是，纳米夹层系统是一个更简单的模型，因为纳米颗粒的聚集和分散问题无关紧要，并且可以实现更广泛的表面相互作用。 实验和互补的分子建模将集中于通过改变单体结构，树脂/纳米孔表面相互作用，纳米孔大小以及封闭纳米孔矩阵的热膨胀系数来隔离固有尺寸效应，表面效应和残留应力效应。 可交付成果将包括开发和传播新的科学知识，对研究生工程学生的培训以及为初中女生的复合材料开发一个为期一周的模块。如果成功的结果，这项研究的结果将促进纳米复合材料和复合系统的设计和优化，通过对Matrix Properties的限制效应更好地了解。 示例应用程序包括在航空航天和纳米电子学中使用的复合材料和纳米复合材料。该研究的结果将通过国家和地区论坛的演讲以及会议论文集和档案期刊的出版物进行传播。 参与研究的研究生工程专业的学生将接受项目的所有科学方面的培训以及专业发展培训。 还将开发为对科学和工程感兴趣的初中女生进行的为期一周的复合材料模块。