scholarly journals Study of making the SnO2/Sb2O3 membrane mixture on aluminum metal base as insulation and heat transfer material

2021 ◽  
Vol 10 (3) ◽  
pp. 87-97
Author(s):  
Thuan Mai Huu ◽  
Hai Tran Manh
Keyword(s):  
Heat Dissipation ◽  
Chemical Properties ◽  
High Chemical ◽  
Typical Application ◽  
Metal Base ◽  
New Energy ◽  
Thermally Conductive ◽  
Ic Cooling ◽  
Aluminum Substrates ◽  
Aluminum Base

SnO2 materials are attracting the attention of many scientists, because nano-sized SnO2 materials are applied to sensor, new energy, semiconductors field, etc. A typical application when coating SnO2/Sb2O3 on aluminum substrates is as a thermally conductive insulating material for electronic components such as  IC cooling, microprocessors, leds, .... When changing factors such as pH solution, dipping time, calcination and calcination temperature, the structure and morphology also change, leading to changes in physico-chemical properties. The research on synthesizing nano SnO2/Sb2O3 (0.6%) by hydrothermal method brings very good results because this material has both insulating ability and high chemical and electrochemical strength, low toxicity to environment.Aluminum base is a material with mechanical strength (plasticity, malleability), high chemical resistance, good heat dissipation. When coated with SnO2/Sb2O3 on an aluminum base, this material can become a heatsink integrated board for accessories and electronic equipment (resistance value from 5÷ 15MW, thermal conductivity reaching 93.4% efficiency).

Highly thermally conductive graphene-based electrodes for supercapacitors with excellent heat dissipation ability

2017 ◽  
Vol 1 (10) ◽  
pp. 2145-2154 ◽  
Author(s):  
Bo Zhao ◽  
Xian-Zhu Fu ◽  
Rong Sun ◽  
Ching-Ping Wong
Keyword(s):  
Heat Dissipation ◽  
Cycling Performance ◽  
Thermally Conductive ◽  
Rate Capacity ◽  
Electrodes For Supercapacitors

The highly thermally conductive graphene-based electrodes for supercapacitors exhibit great heat dissipation ability as well as excellent cycling performance and rate capacity.

scholarly journals Research of MnCO3/CB Composite on Properties Apply to Supercapacitors

2020 ◽  
Vol 185 ◽  
pp. 04023
Author(s):  
Liqiong Han ◽  
Yifan Liu ◽  
Rongyu Li
Keyword(s):  
Energy Storage ◽  
Electrode Material ◽  
Specific Capacity ◽  
Chemical Properties ◽  
Manganese Carbonate ◽  
Mixed Solution ◽  
Storage Material ◽  
New Energy ◽  
Energy Storage Material ◽  
Liquid Deposition

In order to improve the electro-conductibility of new energy storage material-manganese carbonate(MnCO3) and the properties apply to supercapacitors, we produce MnCO3/CB composite at room temperature by using a simple and mild liquid phase deposition method. Using dilute HNO3 to purify and activate the CB(carbon black), then put the handled CB into NH4HCO3/MnSO4 mixed solution for liquid deposition. Observed through infrared and XPS methods, we found that - after purified by dilute HNO3, the negatively charged groups(carboxyl & quinonyl) on CB surface increase, which makes CB uneasy to reunite in water and benefits the producing of a homogeneous compound. Observed the compound under SEM:40nm diameter CB granules wrap the Lotus-shaped MnCO3 granule, and form a porous structure between MnCO3 granules. The result of electro-chemical properties indicated by galvanostatic charge-discharge tests shows that the specific capacity of MnCO3/CB composite electrode material is twice of the pure MnCO3 electrode material, while the MnCO3/CB composite has a good cycle capacitive retention ratio. As a newly discovered energy storage material, MnCO3 provides a new direction to make composite material for supercapacitor electrodes.

Applications and Prospects of Hollow Micro/Nanospheres in Environmental Protection and New Energy

2011 ◽  
Vol 383-390 ◽  
pp. 7169-7174
Author(s):  
Xing Yu Cui ◽  
Ning Zhang ◽  
Pu Yu Yao ◽  
Bin Liang
Keyword(s):  
Energy Conservation ◽  
Environmental Protection ◽  
Chemical Properties ◽  
Research Area ◽  
Physical And Chemical Properties ◽  
Broad Application ◽  
New Energy ◽  
Physical And Chemical ◽  
And Chemical Properties

Hollow micro/nanosphere materials have the especial structure, excellent physical and chemical properties, so they have the broad application prospect in some fields, such as energy conservation, environmental protection, new energy and so on. This paper summarizes the adhibition of hollow micro/nanosphere materials in energy conservation, environmental protection, new energy and so on. And this paper prospects the research area and application prospect of the hollow micro/nanosphere material.

scholarly journals Development of Thermally Conductive Polyurethane Composite by Low Filler Loading of Spherical BN/PMMA Composite Powder

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Kai-Han Su ◽  
Cherng-Yuh Su ◽  
Cheng-Ta Cho ◽  
Chung-Hsuan Lin ◽  
Guan-Fu Jhou ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Heat Dissipation ◽  
Three Dimensional ◽  
Filler Loading ◽  
High Thermal Conductivity ◽  
Heat Diffusion ◽  
Composite Powders ◽  
Polyurethane Composite ◽  
Uniform Dispersion ◽  
Thermally Conductive

Abstract The issue of electronic heat dissipation has received much attention in recent times and has become one of the key factors in electronic components such as circuit boards. Therefore, designing of materials with good thermal conductivity is vital. In this work, a thermally conductive SBP/PU composite was prepared wherein the spherical h-BN@PMMA (SBP) composite powders were dispersed in the polyurethane (PU) matrix. The thermal conductivity of SBP was found to be significantly higher than that of the pure h-BN/PU composite at the same h-BN filler loading. The SBP/PU composite can reach a high thermal conductivity of 7.3 Wm−1 K−1 which is twice as high as that of pure h-BN/PU composite without surface treatment in the same condition. This enhancement in the property can be attributed to the uniform dispersion of SBP in the PU polymer matrix that leads to a three-dimensional continuous heat conduction thereby improving the heat diffusion of the entire composite. Hence, we provide a valuable method for preparing a 3-dimensional heat flow path in polyurethane composite, leading to a high thermal conductivity with a small amount of filler.

scholarly journals Estimation of the Adhesion Interface Performance in Aluminum-PLA Joints by Thermographic Monitoring of the Material Extrusion Process

Materials ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3371 ◽  
Author(s):  
Stephan Bechtel ◽  
Mirko Meisberger ◽  
Samuel Klein ◽  
Tobias Heib ◽  
Steven Quirin ◽  
...  
Keyword(s):  
Substrate Temperature ◽  
Substrate Surface ◽  
Metal Structure ◽  
Extrusion Process ◽  
Scanning Calorimetry ◽  
Metal Base ◽  
Lap Shear ◽  
Lap Shear Test ◽  
Polymer Metal ◽  
Aluminum Substrates

Using additive manufacturing to generate a polymer–metal structure offers the potential to achieve a complex customized polymer structure joined to a metal base of high stiffness and strength. A tool to evaluate the generated interface during the process is of fundamental interest, as the sequential deposition of the polymer as well as temperature gradients within the substrate lead to local variations in adhesion depending on the local processing conditions. On preheated aluminum substrates, 0.3 and 0.6 mm high traces of polylactic acid (PLA) were deposited. Based on differential scanning calorimetry (DSC) and rheometry measurements, the substrate temperature was varied in between 150 and 200 °C to identify an optimized manufacturing process. Decreasing the layer height and increasing the substrate temperature promoted wetting and improved the adhesion interface performance as measured in a single lap shear test (up to 7 MPa). Thermographic monitoring was conducted at an angle of 25° with respect to the substrate surface and allowed a thermal evaluation of the process at any position on the substrate. Based on the thermographic information acquired during the first second after extrusion and the preset shape of the polymer trace, the resulting wetting and shear strength were estimated.

scholarly journals Green Gas for Grid as an Eco-Friendly Alternative Insulation Gas to SF6: A Review

2020 ◽  
Vol 10 (7) ◽  
pp. 2526 ◽  
Author(s):  
Baofeng Pan ◽  
Guoming Wang ◽  
Huimin Shi ◽  
Jiahua Shen ◽  
Hong-Keun Ji ◽  
...  
Keyword(s):  
Sulfur Hexafluoride ◽  
Heat Dissipation ◽  
Circuit Breaker ◽  
Chemical Properties ◽  
Electric Power Industry ◽  
Dielectric Strength ◽  
Environmental Concerns ◽  
Current Test ◽  
Lightning Impulse ◽  
Liquefaction Temperature

This paper deals with a review of the state-of-the-art performance investigations of green gas for grid (g3) gas, which is an emerging eco-friendly alternative insulation gas for sulfur hexafluoride (SF6) that will be used in gas-insulated power facilities for reducing environmental concerns. The required physical and chemical properties of insulation gas for high-voltage applications are discussed, including dielectric strength, arc-quenching capability, heat dissipation, boiling point, vapor pressure, compatibility, and environmental and safety requirements. Current studies and results on AC, DC, and lightning impulse breakdown voltage, as well as the partial discharge of g3 gas, are provided, which indicate an equivalent dielectric strength of g3 gas with SF6 after a proper design change or an increase in gas pressure. The switching bus-transfer current test, temperature rise test, and liquefaction temperature calculation also verify the possibility of replacing SF6 with g3 gas. In addition, the use of g3 gas significantly reduces theabovementioned environmental concerns in terms of global warming potential and atmosphere lifetime. In recent years, g3 gas-insulated power facilities, including switchgear, transmission line, circuit breaker, and transformer, have been commercially available in the electric power industry.

Multifunctional Liquid Crystal Polymeric Composites Embedded With Graphene Nano Platelets

2011 ◽  
Author(s):  
Muhammad Omer Khan ◽  
Ellen Chan ◽  
Siu N. Leung ◽  
Hani Naguib ◽  
Francis Dawson ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Liquid Crystal ◽  
Heat Dissipation ◽  
Three Dimensional ◽  
Cost Effective ◽  
Polymeric Composites ◽  
Potential Cost ◽  
Conductive Composites ◽  
The Matrix ◽  
Thermally Conductive

This paper studies the development of new multifunctional liquid crystal polymeric composites filled with graphene nano platelets (GNPs) for electronic packaging applications. A series of parametric studies were conducted to study the effect of GNP content on the thermal conductivity of LCP-based nanocomposites. Graphene, ranging from 10 wt. % to 50 wt. %, were melt-compounded with LCP using a twin-screw compounder. The extrudates were ground and compression molded into small disc-shaped specimens. The thermal conductivity of LCP matrix was observed to have increased by more than 1000% where as the electrical conductivity increased by 13 orders of magnitude with the presence of 50 wt% GNP fillers. The morphology of the composites was analyzed using SEM micrographs to observe the dispersion of filler within the matrix. These thermally conductive composites represent potential cost-effective materials to injection mold three-dimensional, net-shape microelectronic enclosures with superior heat dissipation performance.

Density Measurement of Pyridine Based Ionic Liquids and Methanol Binary Mixtures

2013 ◽  
Vol 675 ◽  
pp. 248-251
Author(s):  
Zhuo Li ◽  
Chang Ping Li
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Energy Storage ◽  
Binary Mixtures ◽  
Density Measurement ◽  
Chemical Properties ◽  
Storage Material ◽  
Physico Chemical ◽  
New Energy ◽  
Energy Storage Material

As a new environmentally friendly solvent, ionic liquids have been investigated widely. The lack of physico-chemical properties data of ionic liquids has become a bottleneck that restricts their applications. In this study, the investigation of the density for binary mixtures of CnpyNTf2 (n = 2, 4, 5) and methanol is measured using Westphal balance. This study would be very important for the application of binary mixtures of ionic liquid and methanol in developing new energy storage material.

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