GOALI: Development of Inorganic Phosphate Glass Matrix Nanocomposites Incorporating Nanoscale Polyhedral Oligomeric Silsesquioxanes with Improved Properties

目标：开发包含纳米级多面体低聚倍半硅氧烷的无机磷酸盐玻璃基纳米复合材料，并具有改进的性能

• 批准号: 1360006
• 负责人: Joshua Otaigbe
• 金额: $ 45.62万
• 依托单位: University of Southern Mississippi
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-07-01 至 2019-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1360006&HistoricalAwards=false
• 关键词: GOALI; Development; Inorganic; Phosphate; Glass

NON-TECHNICAL: This Grant Opportunities for Academic Liaison with Industry research project concerns the development of optically transparent glass matrix nanocomposite, wherein special molecular silica is chemically incorporated into ultra-low melting phosphate glass. The hypothesis of the proposed research is that molecular-level combination during liquid-state processing of reinforcing molecular silica and phosphate glass matrix at similar molecular-level length scales has the potential to offer significantly improved optical and mechanical properties for a number of applications. The ability to easily manufacture intricate shapes of the nanocomposites by liquid-state processing in an extruder at relatively low temperatures (250°C), to reinforce glass with molecular silica, and to potential self-healing of glass via low-temperature annealing offer distinctive transformative alternatives to conventional glass and ceramics materials processing and design. This project plays an important role in the Nation's current interest in developing micro- and nano-length scale materials and processing technologies. The project provides useful training for two graduate students and a number of research experiences for undergraduate students in a vital area of research, making significant impact on the future economic development of the U.S. in the area of nanostructured 'optically transparent' inorganic glass matrix nanocomposites materials. Recruiting women and other underrepresented minorities (e.g., ethnic, disabled, geographic) from the University of Southern Mississippi's sizable minority student population is an important objective of this project.TECHNICAL DETAILS: This cooperative research effort between Southern Mississippi University and industry (Hybrid Plastics, Inc.) investigates how incorporation of small amounts of a well-defined nanostructured inorganic cluster or molecular silica can be used to tune morphological, rheological and strength and fracture toughness of 'optically transparent' molecular silica/phosphate glass matrix nanocomposites system. The discovery of new knowledge and phenomena are prerequisites to inventing new applications. As well, the diversification of research approaches coupled with cooperation is critical for the best progress. In particular, the academic-industry liaison provides critical guidance and a clear focus for the creation and refinement of highly relevance materials for a range of applications. The special molecular silica which is manufactured by the industrial partner of this project consists of an eight-corner, silica-based cage bearing one or more prescribed functional groups to yield a new class of innovative molecular silica/phosphate glass matrix nanocomposites that combines transparency (optical clarity) and improved strength and fracture toughness for special security uses. By using a variety of complementary methods, the project explores the molecular origin of the structure, rheological properties and thermo-mechanical behavior of well-characterized molecular silica/phosphate glass matrix nanocomposites, making it possible to define mechanisms that develop on nanometer length scales, influence the microscale, and impact the macroscale. Because the nano-polyhedral oligomeric silsesquioxanes (POSS) merges the properties of nanofillers with the precision of chemistry and the molecular silica cage length scale (i.e., 1.5 nm) approaches the short-range structure of phosphate glass, it is conjectured that unique interactions develop that give rise to optimal control of the nanocomposite properties such as strength, fracture toughness and light transmittance.

非技术：与行业研究项目的学术联络机会有关的赠款机会涉及光学透明玻璃基质纳米复合材料的发展，其中特殊的分子二氧化硅被化学地纳入了超低熔融磷酸盐玻璃中。拟议研究的假设是，在相似的分子级长度尺度下，在液态加强分子二氧化硅和磷酸盐玻璃基质的液态过程中的分子水平组合具有可显着改善许多应用的光学和机械性能。通过在相对较低的温度（250°C）中挤出机中的液态加工来轻松制造纳米复合材料的复杂形状，用分子二氧化硅加强玻璃，并通过低温退火通过玻璃进行潜在的自我控制，为传统的玻璃和陶器材料加工提供了独特的转换替代方案。项目在该国当前在开发微观和纳米长度规模材料和加工技术方面发挥着重要作用。该项目为两名研究生提供了有用的培训，并为重要的研究领域的本科生提供了许多研究经验，从而在纳米结构的“光学透明”无机玻璃基质纳米复合材料的领域对美国的未来经济发展产生了重大影响。 Recruiting women and others Underrepresented minorities (e.g., ethnic, disabled, geographic) from the University of Southern Mississippi's sizable minority student population is an important objective of this project.TECHNICAL DETAILS: This cooperation research effort between Southern Mississippi University and industry (Hybrid Plastics, Inc.) investigates how incorporated small amounts of a well-defined nanostructured inorganic cluster or molecular silica can be used为了调整“光学透明”分子二氧化硅/磷酸盐玻璃基质纳米复合材料系统的形态，流变学和强度和断裂韧性。发现新知识和现象是发明新应用的先决条件。同样，研究方法的多元化以及协调的多样化对于最佳进步至关重要。特别是，学术行业联络人提供了关键的指导和明确的重点，以创建和完善一系列应用的高度相关材料。该项目的工业合作伙伴制造的特殊分子二氧化硅由一个八角的，基于二氧化硅的笼子轴承轴承一个或多个处方的功能组，以产生一类新的创新分子二氧化硅/磷酸盐玻璃基质纳米复合材料，该纳米复合材料结合了固定性（光学清晰度）（光学透明度）（光学清晰度），并提高了强度和差异性能。通过使用多种互补方法，该项目探讨了特征良好的分子二氧化硅/磷酸盐玻璃基质基质纳米复合材料的结构，流变特性和机械性能的分子起源，从而可以定义在纳米长度上发展的机制，从而影响纳米长度尺度，影响显微镜和影响Macroscale。因为纳米 - 多层寡聚锡盐盐（POSS）将纳米燃料的特性与化学精确度合并，分子二氧化硅笼长度尺度（即1.5 nm）接近磷酸盐玻璃的短距离结构，因此可以确定的是，唯心相互作用就可以使范围呈现范围的特性和最佳属性。