Novel self-reinforcing ZrO2–SiO2 aerogels with high mechanical strength and ultralow thermal conductivity

2018 ◽  
Vol 44 (13) ◽  
pp. 15440-15445 ◽  
Author(s):  
Xianbo Hou ◽  
Rubing Zhang ◽  
Baolin Wang
Keyword(s):  
Thermal Conductivity ◽  
Mechanical Strength ◽  
High Mechanical Strength

scholarly journals NONCONVENTIONAL TECHNIQUE FOR PRODUCING HIGH MECHANICAL STRENGTH GLASS FOAM FROM GLASS WASTE

2019 ◽  
Vol 25 (2) ◽  
Author(s):  
LUCIAN PAUNESCU ◽  
MARIUS FLORIN DRAGOESCU ◽  
SORIN MIRCEA AXINTE ◽  
ANA CASANDRA SEBE
Keyword(s):  
Thermal Conductivity ◽  
Energy Source ◽  
Mechanical Strength ◽  
Electromagnetic Waves ◽  
Building Materials ◽  
Glass Waste ◽  
High Mechanical Strength ◽  
Foaming Agent ◽  
Heating Efficiency ◽  
Glass Foam

In the work experimental results on the manufacture of glass foam with high mechanical strength from glass waste are presented. By replacing the usual conventional energy source with a nonconventional energy (electromagnetic waves) the heating efficiency allows a fast and economical manufacturing process. Calcium carbonate as a foaming agent and an addition of sodium silicate (aqueous solution) as a binder were used. By their physico-mechanical and morphological features (0.40-0.66 g/ cm<sup>3 </sup>the apparent density, 0.054-0113 W/ m·K the thermal conductivity, 2.2-6.3 MPa the compressive strength, below 1.2 % the water absorption and under 2 mm the pore size), the foams are appropriate for their use as replacer of existing similar building materials on the market.

Low-density graphene/carbon composite aerogels prepared at ambient pressure with high mechanical strength and low thermal conductivity

RSC Advances ◽  
2015 ◽  
Vol 5 (7) ◽  
pp. 5197-5204 ◽  
Author(s):  
Kang Guo ◽  
Zijun Hu ◽  
Huaihe Song ◽  
Xian Du ◽  
Liang Zhong ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Mechanical Strength ◽  
Compression Strength ◽  
Ambient Pressure ◽  
Carbon Matrix ◽  
Carbon Composite ◽  
Low Density ◽  
High Mechanical Strength ◽  
Low Thermal Conductivity ◽  
Composite Aerogels

SEM and TEM pictures show that GNSs can be well-dispersed in a carbon matrix. The resultant composite CAs exhibited high compression strength and extremely low thermal conductivity of 0.028 W m−1 K−1.

NONCONVENTIONAL TECHNIQUE FOR PRODUCING HIGH MECHANICAL STRENGTH GLASS FOAM FROM GLASS WASTE

2019 ◽  
Vol 25 (2) ◽  
pp. 48-55
Author(s):  
LUCIAN PAUNESCU ◽  
MARIUS FLORIN DRAGOESCU ◽  
SORIN MIRCEA AXINTE ◽  
ANA CASANDRA SEBE
Keyword(s):  
Thermal Conductivity ◽  
Energy Source ◽  
Mechanical Strength ◽  
Electromagnetic Waves ◽  
Building Materials ◽  
Glass Waste ◽  
High Mechanical Strength ◽  
Foaming Agent ◽  
Heating Efficiency ◽  
Glass Foam

In the work experimental results on the manufacture of glass foam with high mechanical strength from glass waste are presented. By replacing the usual conventional energy source with a nonconventional energy (electromagnetic waves) the heating efficiency allows a fast and economical manufacturing process. Calcium carbonate as a foaming agent and an addition of sodium silicate (aqueous solution) as a binder were used. By their physico-mechanical and morphological features (0.40-0.66 g/ cm3 the apparent density, 0.054-0113 W/ m·K the thermal conductivity, 2.2-6.3 MPa the compressive strength, below 1.2 % the water absorption and under 2 mm the pore size), the foams are appropriate for their use as replacer of existing similar building materials on the market.

Characteristics and Applications of Silicon Carbide Power Devices in Power Electronics

2010 ◽  
Vol 56 (3) ◽  
pp. 231-236 ◽  
Author(s):  
Nisha Kondrath ◽  
Marian Kazimierczuk
Keyword(s):  
Thermal Conductivity ◽  
Silicon Carbide ◽  
Mechanical Strength ◽  
Power Electronics ◽  
High Temperatures ◽  
High Power ◽  
Power Devices ◽  
Paper Properties ◽  
High Mechanical Strength ◽  
Chemical Inertness

Characteristics and Applications of Silicon Carbide Power Devices in Power ElectronicsSilicon carbide materials, with its high mechanical strength, high thermal conductivity, ability to operate at high temperatures, and extreme chemical inertness to most of the electrolytes, are very attractive for high-power applications. In this paper, properties, advantages, and limitations of SiC and conventional Si materials are compared. Various applications, where SiC power devices are attractive, are discussed.

DMV 59

Alloy Digest ◽  
2009 ◽  
Vol 58 (8) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Mechanical Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Mechanical Strength ◽  
Temperature Performance

Abstract DMV 59 is the material of choice for a wide variety of applications where significant corrosion resistance and high mechanical strength is necessary. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ni-672. Producer or source: Mannesmann DMV Stainless USA Inc.

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