Mechanical, thermal and rheological properties of hollow glass microsphere filled thermoplastic polyurethane composites blended by normal vane extruder

Abstract

In this study, different proportions of hollow glass microsphere (HGM) filled thermoplastic polyurethane (TPU) elastomer composites were prepared by normal vane extruder. The phase morphology, rheological properties, mechanical properties and thermal stability of TPU/HGM composites were investigated in detail. It was observed that the incorporation of HGM increased the thermal stability of TPU. With the increase in HGM content from 5 to 20 wt-%, the glass transition temperature, storage modulus and complex viscosity values increased continuously, while the density of the composite monotonously decreased. Moreover, the tensile modulus of the composites increased from 43.5 to 81.3 MPa. The results showed that, although raw HGM was used without any modification, the HGM played an important role in improving the properties of TPU.

Preparation and Characterization of Hollow Glass Microspheres- Reinforced Poly (acrylonitrile-co-butadiene-co-styrene) Composites

“…Complex viscosity values indicate that the incorporation of HGM does not change the shear thinning behavior but affects the index of viscosity at a given shear rate. Similar results are found in other reports involving polymer based/ HGM composites 13,14 . Table 3 presents the tensile strength and modulus of ABS/C and composites as a function of HGM content.…”

“…Furthermore, this result indicates that large-scale polymer relaxations are restrained by the presence of HGM effectively, which agrees with the HDT results. In addition, the incorporation of HGM improves the stiffness of ABS, which is consistent with the results obtained in other studies 11,13,14 .…”

“…It is apparent that the G' of the composites increases with the increase in HGM content. This result may be associated with the reinforced effect caused by the incorporation of the rigid HGM 14 . Furthermore, this result indicates that large-scale polymer relaxations are restrained by the presence of HGM effectively, which agrees with the HDT results.…”

“…Storage modulus (G') represents the elastic response of a material, which relates to the potential energy stored by the material during deformation. Hence, the value of G ' can be used as a comparative estimative of the stiffness of the material 13,14 . Figure 3 represents the frequency dependence of the storage modulus (G') for the ABS and ABS/HGM composites.…”

Poly(acrylonitrile-co-butadiene-co-styrene) Reinforced with Hollow Glass Microspheres: Evaluation of Extrusion Parameters and Their Effects on the Composite Properties

“…In addition, the regulatory requirements on low CO 2 emission and environmental concerns [2] are a challenge for automotive industries to promote vehicle weight reduction without compromise of its performance. Polymer composite materials reinforced with hollow glass microspheres are generally designed to comprise low density materials with higher mechanical performance [2][3][4][5][6].…”