Comprehensive Analysis of Mechanical Properties of CB/SiO2/PVDF Composites

Abstract

Damage is a key problem that limits the application of polymer membranes. In this paper, conductive carbon black (CB) and silicon dioxide (SiO2)-reinforced polyvinylidene fluoride (PVDF) composites were prepared using a solution mixing method. Through a uniaxial tensile test, the fracture and damage characteristics of the material were analyzed. When the structure had inevitable notch damage, changing the notch angle was very helpful for the material to bear more load. In addition, when there were two kinds of fillers in the PVDF matrix at the same time, there was an interaction between particles. The microstructure of the composite was characterized by scanning electron microscopy (SEM), energy-dispersive spectrometry (EDS), and thermogravimetric (TG) analysis. The experimental results indicate that, when the ratio of CB:SiO2:PVDF was 1:4:95, the general mechanical properties of the composite were the best.

Utilizing the synergistic effect between the Schottky barrier and field redistribution to achieve high-density, low-consumption, cellulose-based flexible dielectric films for next-generation green energy storage capacitors

“…47 the mechanical properties of ZSZ and SZS in our work with some typical cellulose-and PVDF-based 0-3 structured composites. 17,26,27,35,[48][49][50][51][52][53][54][55][56][57][58][59][60][61][62] According to the summary in the gure, the cellulose-based composites own better tensile strength but inferior elongation at break than the PVDF-based ones, which is because of the strong hydrogen bond in the cellulose molecular chain network. 19,21,63 Here, the ZSZ shows a tensile strength of 139.05 MPa with elongation at break of 39.47%, and the SZS has a lower tensile strength of 133.96 MPa, but a higher elongation at break of 41.40%.…”

Flexible electrospun PVDF/WO3 nanocomposite fibers for piezoelectric energy harvesting applications

“…That is the main reason for showing smaller elongation in 2% composite nanofibers. Due to accumulation of WO 3 nanorods, the movement of the PVDF molecular chain may have hindered which decreased the elasticity and the elongation of the composite 47 . Hence, the load is effectively transferred between the WO 3 nanorods and PVDF nanofibers.…”

“…Due to accumulation of WO 3 nanorods, the movement of the PVDF molecular chain may have hindered which decreased the elasticity and the elongation of the composite. 47 Hence, the load is effectively transferred between the WO 3 nanorods and PVDF nanofibers. The applications of wearable electronics, membranes and separations, water treatment requires significant mechanical strength.…”

Piezoelectric, mechanical, and crystallographic properties of polyvinylidene fluoride‐hexafluoropropylene based composites reinforced by different dimensional carbon nanomaterials

“…In addition, metal oxides, [21][22][23][24][25] nano-metallic materials, 26,27 and some nonconductive materials 28,29 were added into PVDF and its copolymers. The prepared composite films had enhanced various properties in many aspects.…”