1. Foam structure vs. lightweight structure
1.1 MD / HD lightened structure
If we combine 200 cm3 of air and 800 cm3 of polystyrene PS in a box (figure 1-a), we obtain a mixture of 1,000 cm3 with a weight of 840.56 g (air: 2.8 g/1,000 cm3 and PS: 1,050 g/1,000 cm3). In other words, a new material with a density of 0.84 g/cm3 has been created, whose structure corresponds to that of a 1,000 cm3 box enclosing a 200 cm3 empty cavity.
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Foam structure vs. lightweight structure
Target products
Bibliography
- (1) - ZHANG (H.) - Scale-Up of Extrusion Foaming Process for Manufacture of Polystyrene Foams Using Carbon Dioxide. - Graduate Department of Mechanical and Industrial Engineering, University of Toronto http://tspace.library.utoronto.ca
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