material - polystyrene POLYSTYRENE CRYSTAL FORMULA/ CHEMICAL COMPOSITION   MATERIAL DESCRIPTION All polystyrenes have excellent process ability and a low heat capacity value leading to process energy reduction. With its high stiffness and low density, all articles made from polystyrene have excellent strength-to-weight ratio offering many environmental benefits, such a reduction of weight, nonrenewable resource savings, transportation costs and carbon footprint. EXTRACTION PROCESS  Methanol extraction out of polystyrene at 100 ‘C and requires 6 hours BASIC PROPERTIES

COMPRESSIVE STRENGTH (N/M2)                                                                       10-60 PSI 69.000- 413.000
TENSILE STRENGTH (N/M2)                                                                                         46 x10^6 – 60×10^6
STIFFNESS (N/M2)                                                                                              3000 x10^6 – 3600 x10^6
DENSITY (KG/M3)                                                                                                                         16 – 640
CARBON FOOTPRINT (AVERAGE, KGCO2E/KG)                                                                                      1.87
RECYCLABLE                                                                                                                                      YES
LASER SMALL   (According to thickness)                                                                                               YES
LASER MILLING                                                                                                                                  YES
3D PRINTING   (If mixed with LIMONENE Solvent)                                                                                 YES

ADVANTAGE IN THE CONTEXT OF DIGITAL FABRICATION: It is a very inexpensive resin per unit weight, can be used by all machines, recyclable. MATERIAL SUPLIERS: COMPLAS – www.complasbcn.com SERVEI ESTACIO – www.serveiestacio.com LORK-  www.lorkindustrias.com   PRICE: 48 E/m2 for a 5mm thickness                                                               (CHEAPEST IN BCN 2014) AT COMPLAS – www.complasbcn.com