scholarly journals Ceramic foams with highly open channel structure from direct foaming method in combination with hollow spheres as pore-former

2020 ◽  
Author(s):  
Yu Zheng ◽  
Xudong Luo ◽  
Jiegang You ◽  
Zijun Peng ◽  
Shuhao Zhang
Keyword(s):  
Compressive Strength ◽  
Porous Structure ◽  
High Performance ◽  
Open Channel ◽  
Hollow Spheres ◽  
Channel Structure ◽  
Pore Former ◽  
Ceramic Foams ◽  
Direct Foaming ◽  
Direct Foaming Method

Abstract To satisfy the ever-increasing demands for high-performance ceramic foams that could be applied in catalysts loader, filtrations and adsorptions, it is critical to develop technologies for ceramic foams with open channel structure. In this work, we fabricated ceramic foams with three-dimensional porous structure specially with open channels by combining direct foaming method with adding pore-forming agent method. There are two levels of length scale present in this hierarchically porous structure, that is, foam structure with spherical pores evolved from bubbles, and open pores on the cell wall derived from silica hollow spheres with thin shell as the pore-former. Hierarchical ZrO 2 based foams with porosity of 86.5%-95.1% and compressive strength of 2.05-5.67 MPa, and Al 2 O 3 based foams with porosity of 86.2%-91.0% and compressive strength of 6.8-13.2 MPa were fabricated. The prepared ceramic foams characterized by this open channel structure are promising to perform outstandingly in the abovementioned fields due to their uniform pore size, low density as well as high mechanical strength.

Ultralight and high-strength bulk alumina/zirconia composite ceramic foams through direct foaming method

2019 ◽  
Vol 45 (1) ◽  
pp. 1464-1467 ◽  
Author(s):  
Wenlong Huo ◽  
Xiaoyan Zhang ◽  
Yugu Chen ◽  
Zunlan Hu ◽  
Dong Wang ◽  
...  
Keyword(s):  
High Strength ◽  
Composite Ceramic ◽  
Ceramic Foams ◽  
Direct Foaming ◽  
Direct Foaming Method

MOLDSTAR 90

Alloy Digest ◽  
2005 ◽  
Vol 54 (3) ◽  
Keyword(s):  
Compressive Strength ◽  
Injection Molding ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Copper Alloy ◽  
High Performance ◽  
Blow Molding

Abstract MoldStar 90 is a high-performance beryllium-free copper alloy for the blow-molding and injection-molding industries. This datasheet provides information on composition, physical properties, hardness, tensile properties, and compressive strength. It also includes information on machining, joining, and surface treatment. Filing Code: CU-732. Producer or source: Performance Alloys.

MOLDSTAR 150

Alloy Digest ◽  
2005 ◽  
Vol 54 (2) ◽  
Keyword(s):  
Compressive Strength ◽  
Injection Molding ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Copper Alloy ◽  
High Performance ◽  
Blow Molding

Abstract MoldStar 150 (formerly PAS 940) is a high performance copper alloy for the blow-molding and injection-molding industries. This datasheet provides information on composition, physical properties, tensile properties, and compressive strength. It also includes information on forming, machining, joining, and surface treatment. Filing Code: CU-729. Producer or source: Performance Alloys.

Degradable ultrathin high-performance photocatalytic hydrogen generator from porous electrospun composite fiber membrane with enhanced light absorption ability

2021 ◽  
Author(s):  
Qian-Yu Wang ◽  
Zheng-Min Zhang ◽  
Lin Liu ◽  
Lu Bai ◽  
Rui-Ying Bao ◽  
...  
Keyword(s):  
Phase Separation ◽  
Light Absorption ◽  
High Performance ◽  
Composite Fiber ◽  
Channel Structure ◽  
Separation Mechanism ◽  
Hydrogen Generator ◽  
Fiber Membrane ◽  
Breath Figure ◽  
Phase Separation Mechanism

Poly(L-lactide) (PLA)/TiO2/Pt composite fiber membrane with internal porous channel structure is fabricated by skillfully tuning the breath figure mechanism and vapor induced phase separation mechanism with solute and solvent matching...

scholarly journals A Novel Approach to Fabricate Foam Ceramics from Steel Slag

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Yu Zheng ◽  
Xudong Luo ◽  
Jinlong Yang ◽  
Wenlong Huo ◽  
Chi Kang
Keyword(s):  
Compressive Strength ◽  
Ph Value ◽  
Steel Slag ◽  
Raw Material ◽  
Solid Loading ◽  
Insulation Material ◽  
Ceramic Foams ◽  
Novel Approach ◽  
The Stability ◽  
First Time

A novel approach is used for fabricating steel slag foam ceramics based on the particle-stabilized foaming method. In this work, steel slag was used as the raw material and propyl gallate (PG) was used as the surface modifier. For the first time, steel slag ceramic foams were successfully fabricated based on particle-stabilized foams. The results show that the stability of the ceramic foams was closely related to the pH value and PG concentration. The porosity and compressive strength could be controlled by changing the solid loading of steel slag and sintering temperature. The porosity of steel slag foam ceramics ranged from 85.6% to 62.53%, and the compressive strength was from 1.74 MPa to 10.42 MPa. The thermal conductivity of steel slag foam ceramics was only 0.067 W (m·K)−1, which shows that it could be used as a thermal insulation material.

scholarly journals A Comparative Analysis of Techniques Used to Estimate the Mean Recoil Compressive Strength of High Performance Polymers

2004 ◽  
Vol 16 (3) ◽  
pp. 381-390 ◽  
Author(s):  
Meghan Spence ◽  
James A. Newell ◽  
Michael Lynch ◽  
T. J. Lee ◽  
Jenn Demetrio ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Comparative Analysis ◽  
High Performance ◽  
High Performance Polymers ◽  
The Mean

scholarly journals The Impact of Traffic-Induced Bridge Vibration on Rapid Repairing High-Performance Concrete for Bridge Deck Pavement Repairs

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Wei Wang ◽  
Shuo Liu ◽  
Qizhi Wang ◽  
Wei Yuan ◽  
Mingzhang Chen ◽  
...  
Keyword(s):  
Compressive Strength ◽  
High Performance ◽  
Bridge Deck ◽  
High Performance Concrete ◽  
Reduction Rate ◽  
Harmonic Vibration ◽  
Hydration Reaction ◽  
Self Healing ◽  
The Impact ◽  
Bridge Deck Pavement

Based on forced vibration tests for high-performance concrete (HPC), the influence of bridge vibration induced by traveling vehicle on compressive strength and durability of HPC has been studied. It is concluded that 1 d and 2 d compressive strength of HPC decreased significantly, and the maximum reduction rate is 9.1%, while 28 d compressive strength of HPC had a slight lower with a 3% maximal drop under the action of two simple harmonic vibrations with 2 Hz, 3 mm amplitude, and 4 Hz, 3 mm amplitude. Moreover, the vibration had a slight effect on the compressive strength of HPC when the simple harmonic vibration had 4 Hz and 1 mm amplitude; it is indicated that the amplitude exerts a more prominent influence on the earlier compressive strength with the comparison of the frequency. In addition, the impact of simple harmonic vibration on durability of HPC can be ignored; this shows the self-healing function of concrete resulting from later hydration reaction. Thus, the research achievements mentioned above can contribute to learning the laws by which bridge vibration affects the properties of concrete and provide technical support for the design and construction of the bridge deck pavement maintenance.

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