SEBS/PP共混材料可纺性研究及其熔喷非织造布的制备

Elastic nonwoven have been of interest for a number of applications. Polystyrene-b-poly(ethylene-co-butylene)-b-polystyrene (SEBS) is the thermoplastic block copolymer with good elasticity. Due to high melt viscosity, SEBS nonwovens are difficult to produce. In this research, we acquired SEBS/polypropylene(PP) blends by melt blending. Further, the elastic nonwovens were successfully prepared. Thermal properties of SEBS/PP blends are investigated by the differential scanning calorimetry(DSC) and thermogravimetry (TG). Rheological properties of SEBS/PP blends are analyzed by constant speed type double capillary rheometer. With the combination of the meltblowing, the technology parameters were determined, such as blends proportion and the spinning temperature. The morphology and mechanical properties of the SEBS/PP nonwovens were investigated.