Collaborative Research: Wetting Phenomena in Particle-Filled Polymers: Multifunctional Composites with Easy Processability
合作研究:颗粒填充聚合物中的润湿现象:易于加工的多功能复合材料
基本信息
- 批准号:1434674
- 负责人:
- 金额:$ 6.88万
- 依托单位:
- 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:2014-09-01 至 2019-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Fibers are often mixed into plastics to make them stiffer, stronger, or better electrical conductors. Yet such fiber-containing plastic composites are difficult to manufacture by standard molding or other processing. Furthermore, fibers often suffer damage during manufacturing. This project is to create a bridging system that converts particle fillers into a network of reformable fibers i.e. fibers that are capable of reassembling after breaking. Composites with such network can retain the initial design properties (such as high strength and toughness or high conductivity) without suffering property loss during processing. The Principle Investigators will conduct scientific outreach at pre-college level, especially at the Pittsburgh SciTech High School and two K-8 schools with high minority enrollment, to encourage students to pursue education in STEM disciplines.The specific hypothesis of this research is that composites containing a fiber-like labile filler can be realized by dispersing solid particles into a polymer matrix, and bridging them together by menisci of a wetting fluid. Since the menisci continuously break and reform during flow, the composites will have excellent processability. The properties of the resulting polymer composites may be tailored by suitable choice of filler, and this project will test fillers that realize composites with high stiffness, or high toughness, or high electrical conductivity. The hypothesis will be tested experimentally using polystyrene as the matrix plastic, and silica or metal particles as the particulate filler. Various thermoplastic materials will be used as the wetting phase that forms menisci between particles. Polystyrene, particles, and the wetting phase will be blended by a melt extrusion process optimized to realize meniscus-bridging of particles. Characterization includes tensile and impact testing, electrical conductivity measurements, and morphological studies by scanning electron microscopy. The intellectual significance of this project is to demonstrate that meniscus-bridging can be exploited to achieve materials with the processability of ordinary particle filled polymers, with the mechanical properties of fiber reinforced composites, or the electrical conductivity approaching metals. Furthermore, this project will advance the fundamental knowledge of capillary interactions in filled polymers.
纤维通常被掺入塑料中,以使其更坚硬、更坚固或更好地导电。然而,这种含纤维的塑料复合材料很难通过标准模塑或其他工艺制造。此外,纤维在制造过程中经常受到损害。该项目将创建一种桥接系统,将颗粒填充物转化为可变形纤维网络,即能够在断裂后重新组装的纤维。具有这种网络的复合材料可以保持最初的设计性能(如高强度和高韧性或高导电性),而不会在加工过程中遭受性能损失。主要研究人员将在大学前的水平上进行科学推广,特别是在匹兹堡理工高中和两所少数民族入学率较高的K-8学校,以鼓励学生进行STEM学科的教育。本研究的具体假设是,含有纤维状不稳定填料的复合材料可以通过将固体颗粒分散到聚合物基质中,并通过润湿液体的半月板将它们连接在一起来实现。由于半月板在流动过程中不断断裂和重新生成,复合材料将具有良好的加工性能。通过选择合适的填料,可以定制聚合物复合材料的性能,本项目将测试实现高刚性、高韧性或高导电性的复合材料的填料。这一假设将以聚苯乙烯作为基质塑料,以二氧化硅或金属颗粒作为颗粒填充物进行实验验证。各种热塑性材料将被用来作为颗粒之间形成弯月面的润湿相。聚苯乙烯、粒子和润湿相将通过熔融挤出工艺进行共混,以实现粒子的弯月面桥联。表征包括拉伸和冲击测试、电导率测量和扫描电子显微镜的形态研究。该项目的智能意义在于证明可以利用弯月面架桥来获得具有普通颗粒填充聚合物的可加工性、具有纤维增强复合材料的机械性能或接近金属的导电性的材料。此外,该项目将促进填充聚合物中毛细管相互作用的基础知识。
项目成果
期刊论文数量(0)
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Brian Young其他文献
Alcohol and Watercraft Injuries in the Great Lake States: Who Is the Intoxicated Boater, and What Are They Doing to Our Waterways?
- DOI:
10.1016/j.wem.2013.12.025 - 发表时间:
2014-03-01 - 期刊:
- 影响因子:3.2
- 作者:
Brian Young;John Dery;Mary Hughes;Nathaniel Hibbs - 通讯作者:
Nathaniel Hibbs
MP34-20 OPEN VS. MINIMALLY INVASIVE SURGICAL APPROACHES: ASSOCIATED POST-OPERATIVE COMPLICATIONS OF PEDIATRIC UROLOGIC SURGERY IN THE UNITED STATES
- DOI:
10.1016/j.juro.2016.02.1578 - 发表时间:
2016-04-01 - 期刊:
- 影响因子:
- 作者:
Rohit Tejwani;Brian Young;Hsin-Hsiao Wang;Steven Wolf;John Wiener;Jonathan Routh - 通讯作者:
Jonathan Routh
Do upright radiograph findings affect treatment plans for patients with thoracic and lumbar spine injuries?
直立X光片结果是否会影响胸椎和腰椎损伤患者的治疗计划?
- DOI:
- 发表时间:
2023 - 期刊:
- 影响因子:0.6
- 作者:
Henna Ragoowansi;Brian Young;Steven Young;Jeffrey Young - 通讯作者:
Jeffrey Young
MP01-07 THE ADDED UTILITY OF DIGITAL TOMOSYNTHESIS TO STANDARD ABDOMINAL RADIOGRAPHY FOR IDENTIFICATION OF URINARY CALCULI
- DOI:
10.1016/j.juro.2017.02.082 - 发表时间:
2017-04-01 - 期刊:
- 影响因子:
- 作者:
Daniel Wollin;Rajan Gupta;Brian Young;Eugene Cone;Adam Kaplan;Daniele Marin;Bhavik Patel;Michael Ferrandino;Glenn Preminger;Michael Lipkin - 通讯作者:
Michael Lipkin
Predicting Vessel Trajectories from Ais Data Using R
使用 R 根据 Ais 数据预测船舶轨迹
- DOI:
- 发表时间:
2017 - 期刊:
- 影响因子:0
- 作者:
Brian Young - 通讯作者:
Brian Young
Brian Young的其他文献
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{{ truncateString('Brian Young', 18)}}的其他基金
EAPSI:Exploration of Seismic Waves Propagation and Amplification in Sedimentary Basins Using Data fr
EAPSI:利用地震数据探索沉积盆地中的地震波传播和放大
- 批准号:
1108366 - 财政年份:2011
- 资助金额:
$ 6.88万 - 项目类别:
Fellowship Award
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Research on Quantum Field Theory without a Lagrangian Description
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Cell Research
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Research on the Rapid Growth Mechanism of KDP Crystal
- 批准号:10774081
- 批准年份:2007
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- 项目类别:面上项目
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Collaborative Research: Wetting Phenomena in Particle-Filled Polymers: Multifunctional Composites with Easy Processability
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