Molecular Tailor of Castable Polyurethane Elastomer with Low Free TDI Monomer Content Prepolymer
Castable polyurethane elastomer based on polytetramethylene glycol (PTMEG) and 2,4-toluene diisocyanate (TDI) was prepared with low free TDI monomer content prepolymer (LF-prepolymer), the structure and properties of the prepolymers and corresponding elastomers were characterized. The result showed that, LF-prepolymer exhibit low viscosity, low molecular weight and narrow molecular weight distribution. The polyurethane prepolymer based on LF-prepolymer show higher bashore rebound, lower compression set and better dynamic properties.
Y. H. Yi and Z. Tong, "Molecular Tailor of Castable Polyurethane Elastomer with Low Free TDI Monomer Content Prepolymer", Advanced Materials Research, Vol. 159, pp. 584-588, 2011