Temperature independent thermal expansivities of calcium aluminosilicate melts between 1150 and 1973K in the system anorthite–wollastonite–gehlenite (An–Wo–Geh): A density model

2006 ◽  
Vol 70 (12) ◽  
pp. 3059-3074 ◽  
Author(s):  
Marcel Potuzak ◽  
Mette Solvang ◽  
Donald B. Dingwell
Keyword(s):  
Density Model ◽  
Calcium Aluminosilicate ◽  
Thermal Expansivities

scholarly journals Comparison of a Neutral Density Model With the SET HASDM Density Database

2021 ◽  
Author(s):  
Daniel R Weimer ◽  
W. Kent Tobiska ◽  
Piyush M Mehta ◽  
Richard Joseph Licata ◽  
Douglas Drob
Keyword(s):  
Density Model ◽  
Neutral Density

Mechanical and microstructural properties of polystyrene based composites: positron lifetime spectroscopic and DSC studies

2011 ◽  
Vol 31 (2-3) ◽  
Author(s):  
Abdullah Mohammed Ali Mohammed Altaweel ◽  
Jaya Madhu Raj ◽  
Malalvalli Nagarajaiah Chandrashekara ◽  
Puttegowda Ramya ◽  
Parthasarathy Sampathkumaran ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Free Volume ◽  
Positron Lifetime ◽  
Tensile Modulus ◽  
Silica Content ◽  
Scanning Calorimetry ◽  
Dsc Studies ◽  
Microstructural Property ◽  
Calcium Aluminosilicate

Abstract Polystyrene (PS) based composites respectively with cenosphere (CS) and calcium aluminosilicate (CAS) as fillers were studied using the positron lifetime technique to reveal the correlation between free volume, a microstructural property, and mechanical properties of the composites (tensile strength and tensile modulus). The thermal stability of the composites was determined using differential scanning calorimetry. The results showed that addition of CAS filler lead to a significant improvement in the mechanical properties of the composite, whereas addition of CS resulted in improvement in tensile modulus only. Both PS/CAS and PS/CS composites showed enhancement in thermal stability compared with that of the pure PS matrix. The positron results showed that the average free volume size for the PS/CAS composite (at 40 phr CAS) was reduced significantly compared with that of the pure PS. These results are understood in terms of the influence of silica content, filler-matrix interaction, and particle size.

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