STMMA-FD expandable copolymer resin

Benefits

• The technology for the STMMA-FD copolymer application does not require to change LFC technology conventional polystyrene (EPS).
• The special formula of STMMA-FD solves the main problems of  casting defects occurrence:
• it has great advantages in solving problems with defects in wrinkling, unevenness in the process of aluminum casting, when used in iron castings with the formation of excess secondary (shiny) carbon, as well as with a defect in porosity;
• The carbon content in STMMA-FD is 82%, while EPS - up to 93%.
• STMMA-FD will significantly reduce cementation defects when casting steel / ductile iron, and reduce carbon emissions.
• STMMA-FD has a lower temperature during casting, the gasification temperature is usually 50℃ lower than EPS (STMMA-FD - 1450℃ - 1480℃, EPS - 1460℃ - 1500℃). It helps the foundry to save energy consumption about $50 - $100 per ton of castings.
• Molecular bonds break down orderly during STMMA burning, so liquid low molecular weight residues are formed in the process of destruction.
• EPS molecules are destroyed randomly, and the process is accompanied by the formation of tarry residues.
• STMMA-FD high molecular weight reduces model shrinkage.
• The absence of flame retardants in the composition provides a low flash point.
• It improves the quality of castings, eliminates or minimizes the subsequent machining of cast products.