Name: strain sensing based on multiscale composite materials reinforced with graphene nanoplatelets
Uploaded: 2016-11-07T13:00:00
Description: Watch this Scientific Journal Video about Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets at JoVE.com

作者要感谢西班牙政府部：EconomíaÿCompetitividad（项目MAT2013-46695-C3-1-R）和马德里自治区政府（P2013 / MIT-2862）。

1.多尺度复合材料官能石墨烯纳米薄片填充环氧树脂的制备<ol><li> 分散官能石墨烯纳米片（F-的GNP）插入环氧树脂。 <ol><li>权衡24.00克的f-的GNP，以实现最终的纳米复合材料的12重量％的无管通风柜内部。 </li><li>添加143.09克双酚A二缩水甘油醚（DGEBA）单体和手动搅拌它来实现同质化。 </li><li>通过两步法，结合超声探头和压延加工20驱散F-的GNP成单体。 <ol><li>超声处理在幅度的50...

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nanoreinforced复合材料的自传感器性能是由于通过的f的GNP通过环氧基体，沿着玻璃纤维的产生的电网络中，当应变被诱导被修改。的f的GNP的分散是那么关键，因为传感器的电行为强烈依赖于材料的微观结构。这里，我们提出一种优化过程来实现的GNP的良好分散到环氧基体，并避免纳米颗粒，这会导致导电性的损害的起皱。的关键步骤是超声处理（操作参数）和压延过程（辊间隙和速度）。这些步?...

结构健康监测（SHM）已经变得越来越重要，因为有必要知道结构1-3的剩余寿命。时下，难以接近的位置，例如海上风力植物，带来更高的风险中的维护操作，以及更大的成本2-4。自感应材料构成的在SHM领域的可能性之一，由于其自我监测应变和损坏5的能力。 在风力涡轮机的情况下，叶片通常在玻璃纤维/环氧复合材料，其被电绝缘体制成。为了赋予自感知特性这种复合材料，本征电网络容易受到应变和需要创建损坏。在过去的几年中，导电纳米颗粒，例如银纳米线6,7，碳纳米管（CNT）8-10，和石墨纳米片（的GNP）11-13的掺入已经研究了创建该电网。这些纳米颗粒可被掺入到系统中作为填料混入聚合物基质或通过涂覆玻璃纤维织物14。这些材料也可以应用于其他工业领域， 即，航天，汽车和民用工程5中 ，和涂覆织物可在生物力学应用7,15可以用作智能材料。 这些传感器的压阻是由三个不同的贡献来实现。第一贡献是纳米颗粒的内在压阻;结构的应变改变了纳米颗粒的导电性。然而，主要的贡献是因为在上覆那些9之间的接触面积的变化的变化在隧道电阻，由于在相邻的纳米颗粒，和电接触电阻之间的距离的修改。这压阻较高时，2Dñ由于电网呈现较高易感性几何变化和不连续性，通常大小优于16的一个顺序anoparticles用作纳米填料相比1D纳米颗粒。 由于2D原子字符17和高电导率18,19，石墨烯纳米片已在这项工作中作为多尺度复合材料的纳米增强剂选择，以获得自传感器具有增强的灵敏度。两种不同的方式，以纳入的GNP到复合材料进行了研究，以阐明在感测机制和灵敏度可能差别。

<table border="0" cellpadding="0" cellspacing="0" width="816">
	<colgroup>
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		<col />
		<col />
		<col />
	</colgroup>
	<tbody>
		<tr height="22">
			<td height="22" style="height:22px;width:217px;">Graphene Nanoplatelets</td>
			<td style="width:113px;">XGScience</td>
			<td style="width:319px;">M25</td>
			<td style="width:167px;">NA</td>
		</tr>
		<tr height="21">
			<td height="42" rowspan="2" style="height:42px;width:217px;">Epoxy resin&#160;</td>
			<td rowspan="2" style="width:113px;">Huntsman</td>
			<td style="width:319px;">Araldite LY556</td>
			<td>NA</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:319px;">XB3473</td>
			<td>NA</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:217px;">Probe sonication</td>
			<td>Hielscher&#160;</td>
			<td>UP400S&#160;</td>
			<td>NA</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:217px;">Three roll mill</td>
			<td style="width:113px;">Exakt</td>
			<td>Exakt 80E (Exakt GmbH)</td>
			<td>NA</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:217px;">Glass fiber fabric</td>
			<td style="width:113px;">Hexcel</td>
			<td>HexForce &#174; 01031 1000 TF970 E UD 4H&#160;</td>
			<td>NA</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:217px;">Hot plate press</td>
			<td style="width:113px;">Fontijne&#160;</td>
			<td>Fontijne LabEcon300</td>
			<td>NA</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:217px;">Sizing</td>
			<td style="width:113px;">Nanocyl</td>
			<td>SizicylTM</td>
			<td>NA</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:217px;">Multimeter</td>
			<td style="width:113px;">Alava Ingenieros</td>
			<td>Agilent 34410A&#160;</td>
			<td>NA</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:217px;">Strain Gauges</td>
			<td style="width:113px;">Vishay</td>
			<td>Micro-Measurement (MM&#174;) CEA-06-187UW-120&#160;</td>
			<td>NA</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:217px;">Mechanical tests machine</td>
			<td style="width:113px;">Zwick</td>
			<td>Zwick/Roell 100&#160;kN</td>
			<td>NA</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:217px;">Conductive silver paint</td>
			<td style="width:113px;">Monocomp</td>
			<td style="width:319px;">16062 &#8211; PELCO&#174; Conductive Silver Paint</td>
			<td>NA</td>
		</tr>
	</tbody>
</table>

strain sensing based on multiscale composite materials reinforced with graphene nanoplatelets

NH 2的电响应-functionalized石墨纳米片下应变的复合材料进行了研究。提出了两种不同的制造方法来创建在此工作的电网络：（a）该纳米片掺入环氧基体和（b）的玻璃纤维织物的涂布填充有相同的纳米片上浆。这两种类型的多尺度复合材料，具有10 -3 S / M的〜的面内的导电性，显示出随着应变增大的电阻的指数增长由于相邻官能石墨烯纳米片和上覆的人之间的接触损耗之间保持距离。本研究中进行分析，使用所描述的程序的材料的敏感性，已显示出比市售应变仪更高。对于结构复合材料的自感应的建议的程序将有利于结构健康监测ING如海上风力发电场在难以进入炮位组件。虽然多尺度复合材料的灵敏度比金属箔的用作应变仪的灵敏度，用NH 2涂覆官能石墨烯纳米片织物达到的值要高得多几乎量值优于一个数量级。这个结果阐明用作智能面料监测人的运动，如手指或膝盖弯曲他们的潜力。通过使用该方法，聪明的织物可以立即检测弯曲和立即恢复。这一事实允许的弯曲的时间精确监测以及弯曲程度。

<html>以获得两种不同材料的协议已经在过程进行了描述。所不同的是在nanoreinforcement在复合材料中，以达到可用于应变监测的电网络的方式。第一种方法包括一个玻璃纤维织物使用f-生产总值上浆可用于作为智能织物的涂层（命名的f-生产总值/玻璃纤维），或者作为聚合物基质多尺度复合材料的加强件（命名为F-生产总值/玻璃纤维复合材料）。另一种方法是使用f-的GNP复合?...

Watch this Scientific Journal Video about Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets at JoVE.com

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

导电纳米颗粒，如石墨纳米片，在玻璃纤维复合材料的整合产生的固有电网络容易受到应变。这里，不同的方法来获得的基础上增加石墨纳米片的成环氧基体或作为对玻璃纤维织物的涂层提出了应变传感器。

基于多尺度复合材料的增强与石墨烯纳米片应变传感

The electrical response of NH2-functionalized graphene nanoplatelets composite materials under strain was studied. Two different manufacturing methods are ...

Research

Education

JoVE Core

JoVE Journal

Mechanical Engineering

Engineering

Unit 1

Stress and Strain - Axial Loading

SCIENTISTS IN ACTION

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

对于扫描隧道显微学与库仑杂质制造门可调谐石墨烯器件

Owing to its relativistic low-energy charge carriers, the interaction between graphene and various impurities leads to a wealth of new physics and degrees ...

科研

工程学

Synthesis and Functionalization of 3D Nano-graphene Materials: Graphene Aerogels and Graphene Macro Assemblies

合成和3D纳米石墨烯材料的功能化：石墨烯气凝胶和石墨烯宏组件

Efforts to assemble graphene into three-dimensional monolithic structures have been hampered by the high cost and poor processability of graphene. ...

Experimental Protocol to Determine the Chloride Threshold Value for Corrosion in Samples Taken from Reinforced Concrete Structures

测定钢筋混凝土结构试样腐蚀的氯化物阈值的试验规程

The aging of reinforced concrete infrastructure in developed countries imposes an urgent need for methods to reliably assess the condition of these ...

Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior

定向钢纤维增强水泥基复合材料的制备及其弯曲性能研究

The aim of this work is to present an approach, inspired by the way in which a compass needle maintains a consistent orientation under the action of the ...

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

功能表面用印迹纳米纤维聚合的多尺度结构

Multiscale surface structures have attracted increasing interest owing to several potential applications in surface devices. However, an existing ...

Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material

锂离子电池材料用石墨烯液位的制备

In this work, we introduce the preparation of graphene liquid cells (GLCs), encapsulating both electrode materials and organic liquid electrolytes between ...

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

硅上半圆柱空隙锗外延层位错还原的理论计算和实验验证

Reduction of threading dislocation density (TDD) in epitaxial germanium (Ge) on silicon (Si) has been one of the most important challenges for the ...

Production of a Strain-Measuring Device with an Improved 3D Printer

使用改进的 3D 打印机生产应变测量设备

A traditional strain measurement sensor needs to be electrified and is susceptible to electromagnetic interference. In order to solve the fluctuations in ...

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx

基于混合相位a-VOx的不对称横杆的偏置和制造现场传输电子显微镜

Resistive switching crossbar architecture is highly desired in the field of digital memories due to low cost and high-density benefits. Different ...

Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight

石墨烯结构增强的先进自愈合沥青：原子学见解

Graphene can improve the self-healing properties of asphalt with high durability. However, the self-healing behaviors of graphene-modified asphalt ...