scholarly journals Field-Assembled Polymer Composites

2014 ◽  
Vol 1622 ◽  
pp. 113-121
Author(s):  
James E. Martin
Keyword(s):  
Polymer Composites ◽  
Chemical Sensors ◽  
Composite Structures ◽  
High Strain ◽  
Temperature Sensors ◽  
Thermal Interface Materials ◽  
Thermal Interface ◽  
Interface Materials

ABSTRACTIn this paper we show that a wide variety of composite structures can be obtained from structuring with multiaxial fields. The properties of these composites are highly responsive to field structuring and so significant increases in a variety of properties can be obtained. These composites have application as high-strain actuators, strain and temperature sensors, chemical sensors, and as thermal interface materials. We discuss these issues and provide a general summary of the research we have done in this area.

Thermo-optical characterization and thermal properties of graphene–polymer composites: a review

2018 ◽  
Vol 6 (12) ◽  
pp. 2901-2914 ◽  
Author(s):  
Reg Bauld ◽  
Dong-Yup William Choi ◽  
Paul Bazylewski ◽  
Ranjith Divigalpitiya ◽  
Giovanni Fanchini
Keyword(s):  
Thermal Properties ◽  
Polymer Composites ◽  
Optical Characterization ◽  
Great Promise ◽  
Thermal Interface Materials ◽  
Thermal Interface ◽  
Photothermal Deflection ◽  
Interface Materials

Graphene–polymer composites show great promise as thermal interface materials. We here offer a deeper understanding of their thermal properties using contactless photothermal deflection techniques.

Thermal Performance Measurements of Thermal Interface Materials Using the Laser Flash Method

2007 ◽  
Author(s):  
Vinh Khuu ◽  
Michael Osterman ◽  
Avram Bar-Cohen ◽  
Michael Pecht
Keyword(s):  
Thermal Resistance ◽  
Thermal Performance ◽  
Heat Sink ◽  
Composite Structures ◽  
Laser Flash ◽  
Flash Method ◽  
Thermal Interface Materials ◽  
Thermal Interface ◽  
Layer Composite ◽  
Interface Materials

Thermal interface materials are used to reduce the interfacial thermal resistance between contacting surfaces inside electronic packages, such as at the die-heat sink or heat spreader-heat sink interfaces. In this study, the change in thermal performance was measured for elastomeric gap pads, gap fillers, and an adhesive throughout reliability tests. Three-layer composite structures were used to simulate loading conditions encountered by thermal interface materials in actual applications. The thermal resistance of the thermal interface material, including contact and bulk resistance, was calculated using the Lee algorithm, an iterative method that uses properties of the single layers and the 3-layer composite structures, measured using the laser flash method. Test samples were subjected to thermal cycling tests, which induced thermomechanical stresses due to the mismatch in the coefficients of thermal expansion of the dissimilar coupon materials. The thermal resistance measurements from the laser flash showed little change or slight improvement in the thermal performance over the course of temperature cycling. Scanning acoustic microscope images revealed delamination in one group of gap pad samples and cracking in the putty samples.

Thermal Properties of Carbon Nanotube-Polymer Composites for Thermal Interface Material Applications

2007 ◽  
Author(s):  
Kafil M. Razeeb ◽  
Alessio Munari ◽  
Eric Dalton ◽  
Jeff Punch ◽  
Saibal Roy
Keyword(s):  
Carbon Nanotube ◽  
Thermal Diffusivity ◽  
Polymer Composites ◽  
Epoxy Composite ◽  
Thermal Interface Material ◽  
Thermal Interface Materials ◽  
Thermal Impedance ◽  
Thermal Interface ◽  
Multi Wall Carbon Nanotubes ◽  
Interface Materials

This work presents the thermal property study of single wall and multi wall carbon nanotubes (SWCNT and MWCNT) both in their purified and unpurified forms introduced to silicone elastomer to enhance the thermal diffusivity of this industrial polymer. An increase in thermal diffusivity was observed for incremental loading of both purified and unpurified single wall and multiwall CNT in epoxy at different percentages. An increase of thermal diffusivity as high as 130% was achieved for ∼2 wt% loading of both single wall and multi wall nanotubes. Electrical conductivity measurements showed a percolation threshold for 2% loading of multiwall CNT, below which the nanotube-epoxy composite behaved as an insulator — this is a key property for applications where electrical isolation is required. For single wall CNT-epoxy composite all the samples showed high resistance to the conduction of current. Thermal impedance measurements showed a strong dependency of contact resistance with percentage loading. Finally, the feasibility of deploying carbon nanotube-polymer composites as practical thermal interface materials for electronics thermal management is discussed.

Advanced Thermal Interface Materials for Thermal Management

2018 ◽  
Author(s):  
Wei Yu ◽  
◽  
Changqing Liu ◽  
Lin Qiu ◽  
Ping Zhang ◽  
...  
Keyword(s):  
Thermal Management ◽  
Thermal Interface Materials ◽  
Thermal Interface ◽  
Interface Materials

scholarly journals Carbon Nanotube Films for Energy Applications

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1890
Author(s):  
Monika Rdest ◽  
Dawid Janas
Keyword(s):  
Carbon Nanotube ◽  
Mechanical Energy ◽  
Research Community ◽  
Thermal Interface Materials ◽  
Thermal Interface ◽  
Conductive Coatings ◽  
Storage Devices ◽  
Energy Applications ◽  
Wide Range ◽  
Interface Materials

This perspective article describes the application opportunities of carbon nanotube (CNT) films for the energy sector. Up to date progress in this regard is illustrated with representative examples of a wide range of energy management and transformation studies employing CNT ensembles. Firstly, this paper features an overview of how such macroscopic networks from nanocarbon can be produced. Then, the capabilities for their application in specific energy-related scenarios are described. Among the highlighted cases are conductive coatings, charge storage devices, thermal interface materials, and actuators. The selected examples demonstrate how electrical, thermal, radiant, and mechanical energy can be converted from one form to another using such formulations based on CNTs. The article is concluded with a future outlook, which anticipates the next steps which the research community will take to bring these concepts closer to implementation.

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