Control of high solid content yttria slurry with low viscosity for gelcasting

Takai, Chika; Tsukamoto, Masashi; Fuji, Masayoshi; Takahashi, Minoru

doi:10.1016/j.jallcom.2004.12.191

Cited by 29 publications

(13 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is because when the concentration of polymer is over 0.3%, the viscosity of slurry increases rapidly, and the penetration of gas is poor (Takai et al, 2006). Thus, there is a downward trend in foam quality.…”

Section: Concentration Of the Polymersmentioning

confidence: 99%

Development of a New Material for Mine Fire Control

Zhang

Qin

2014

Combustion Science and Technology

View full text Add to dashboard Cite

In order to prevent the spontaneous combustion of coal efficaciously, a new kind of compound material of multiphase foamed gel is obtained, which is composed of fly ash, foaming agent, thickener, crosslinker, and nitrogen and formed by physical and mechanical stirring. It makes use of the all-around capability of gel, foam, grouting, and inhibitor to prevent mine fires. The formation and crosslinking mechanism of multiphase foamed gel were analyzed in theory, and the effects of the mass fraction of foaming agent and slurry, the quantitative ratio of polymers, and concentration and solid particle on foam properties were carried out. Meanwhile, the resistant property and inhibition characteristic of multiphase foamed gel were studied experimentally and theoretically. The multiphase foamed gel provides a new technical method to prevent the coal spontaneous combustion and thereby it has a vast potential and development prospect.

show abstract

Section: Concentration Of the Polymersmentioning

confidence: 99%

Development of a New Material for Mine Fire Control

Zhang

Qin

2014

Combustion Science and Technology

View full text Add to dashboard Cite

show abstract

“…To prepare highly concentrated slurry, the amount of free solvent is an important factor. The first generation of hard agglomerates leads to larger second‐generation agglomerates, and a large amount of dispersoid is retained within these agglomerates . Therefore, under the same conditions, the synthesized Si–C powder had a greater amount of free dispersoid than UF‐15 SiC powders.…”

Section: Resultsmentioning

confidence: 95%

“…The Si–C powder has a rather isotropic morphology (Figure ). Moreover, the specific surface area of the particles strongly affects the rheological properties of highly concentrated slurries . The synthesized powder had low specific surface area (15.8 m 2 /g) when considering its fine particle size (170 nm) because the surface roughness decreased during high‐energy ball milling (Figure ).…”

Section: Resultsmentioning

confidence: 99%

“…The surface roughness factor ( R n ) can be determined by the ratio of the real surface area ( S r ) to the geometric surface area ( S g ) as follows:

R_{n} = \frac{S_{r}}{S_{g}}

…”

Section: Resultsmentioning

confidence: 99%

“…S g is the geometric surface area of the particle, which can be calculated by the following equation:

S_{g} = \frac{6}{ρ D}

where ρ and D are the density and particle diameter, respectively. The surface roughness factor of the synthesized powder was 1.437.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Dispersion and densification of nano Si–(Al)–C powder with amorphous/nanocrystalline bimodal microstructure

Yoon

Lee

2018

J Am Ceram Soc

View full text Add to dashboard Cite

The dispersion behavior and densification of nano Si–(Al)–C powder with amorphous/nanocrystalline bimodal microstructure were investigated. The Si–C powders synthesized by a mechanical alloying (MA) process had a near‐spherical shape with an average particle size of 170 nm. A solid loading of 62 vol% was achieved using polyethyleneimine (PEI) as a dispersant. The optimum dispersant amount was 1 wt% based on zeta potential, sedimentation, and viscosity analysis data. The high zeta potential value (73 mV) compared with that of the commercially available SiC (65 mV) was caused by modified surface properties and consequent promotion of the cationic dispersant adsorption. A Si–Al–C slurry containing 6.5 wt% of sintering additives with a solid loading of 60 vol% was also prepared. The relative density of the dried Si–Al–C slurry was 63.3% without additional compaction, which could be densified at 1650°C at a pressure of 20 MPa using a spark plasma sintering furnace.

show abstract

Mechanical and thermal properties of bio‐based CaCO₃/soybean‐based hybrid unsaturated polyester nanocomposites

Hassan

Rangari

Jeelani

2013

J of Applied Polymer Sci

View full text Add to dashboard Cite

Bio‐based calcium carbonate nanoparticles (CaCO3) were synthesized via size reduction of eggshell powder using mechanical attrition followed by high intensity ultrasonic irradiation. The transmission electron microscopic (TEM) and BET surface area measurements show that these particles are less than 10 nm in size and a surface area of ∼44 m2/g. Bio‐based nanocomposites were fabricated by infusion of different weight fractions of as‐prepared CaCO3 nanoparticles into Polylite® 31325‐00 resin system using a non‐contact Thinky® mixing method. As‐prepared bio‐nanocomposites were characterized for their thermal and mechanical properties. TEM studies showed that the particles were well dispersed over the entire volume of the matrix. Thermal analyses indicated that the bio‐nanocomposites are thermally more stable than the corresponding neat systems. Nanocomposite with 2% by weight loading of bio‐CaCO3 nanoparticles exhibited an 18°C increase in the glass transition temperature over the neat Polylite 31325 system. Mechanical tests have been carried out for both bio‐nanocomposites and neat resin systems. The compression test results of the 2% Bio‐CaCO3/Polylite 31325 nanocomposite showed an improvement of 14% and 27% in compressive strength and modulus respectively compared with the neat system. Details of the fabrication procedure and thermal and mechanical characterizations are presented in this article. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 1442–1452, 2013

show abstract

Control of high solid content yttria slurry with low viscosity for gelcasting

Cited by 29 publications

References 9 publications

Development of a New Material for Mine Fire Control

Development of a New Material for Mine Fire Control

Dispersion and densification of nano Si–(Al)–C powder with amorphous/nanocrystalline bimodal microstructure

Mechanical and thermal properties of bio‐based CaCO₃/soybean‐based hybrid unsaturated polyester nanocomposites

Contact Info

Product

Resources

About

Control of high solid content yttria slurry with low viscosity for gelcasting

Cited by 29 publications

References 9 publications

Development of a New Material for Mine Fire Control

Development of a New Material for Mine Fire Control

Dispersion and densification of nano Si–(Al)–C powder with amorphous/nanocrystalline bimodal microstructure

Mechanical and thermal properties of bio‐based CaCO3/soybean‐based hybrid unsaturated polyester nanocomposites

Contact Info

Product

Resources

About

Mechanical and thermal properties of bio‐based CaCO₃/soybean‐based hybrid unsaturated polyester nanocomposites