Effect of styrene–ethylene–butadiene–styrene and its synergetic effect with ethylene vinyl acetate on the mechanical, thermal, dielectric, and water‐treeing behaviors of crosslinked polyethylene

Abstract

In this study, we investigated the effect of an aromatic polymer, styrene-ethylene-butadiene-styrene (SEBS), on the water-tree resistance of crosslinked polyethylene (XLPE), and the synergetic effect of SEBS and ethylene vinyl acetate (EVA) was also investigated. The XLPE/SEBS and XLPE/SEBS/EVA samples were characterized by means of differential scanning calorimetry, scanning electron microscopy, mechanical measurements, and an accelerated water-treeing experiment, and the obtained results clearly show the relevant influence of SEBS and EVA, and as expected, the addition of SEBS and EVA was found to synergistically influence the water-tree resistance of XLPE more positively in comparison with that without the addition of EVA. In addition, it also indicated that the blends possessed excellent dielectric behaviors, such as the dielectric constant and dissipation factor. The crystallization of the blends decreased with increasing SEBS content and addition of EVA. However, the melting temperature of the blends increased with the addition of SEBS and EVA, but the melting temperature of the blends decreased with increasing SEBS content.

SEBS-based thermoplastic elastomers containing aluminum hypophosphite and melamine cyanurate: Thermal degradation, flame retardancy, and mechanical properties

“…1 In order to tailor its softness and processability, white oil is often added as extender oil. 2,3 In addition, several researchers have reported TPE (thermoplastic elastomer) blends of SEBS and polyolefin (polypropylene (PP) 1,4,5 and high density polyethylene (HDPE) 6,7 ) that exhibited improved properties and enhanced performance through adjusting (PP and polyethylene (PE))/elastomer ratio. 5 However, the TPE based on SEBS mixed with PP, PE, and white oil makes it highly flammable and leads to intensive burning with smoke and soot production.…”

Acetylated SEBS Enhanced DC Insulation Performances of Polyethylene

“…Polystyrene-b-poly(ethylene- co -butylene)-b-polystyrene (SEBS) exhibits good compatibility with PE and has been studied as a dispersant and toughening agent for the modification of polyolefin insulation materials [34,35,36,37]. Ma et al [38] studied the electrical, mechanical, and growth behavior of a water tree in SEBS/crosslinked polyethylene (XLPE) composites. The results show that the addition of SEBS can significantly improve the inhibition effect and mechanical properties of an XLPE water tree, but the breakdown strength is decreased by some degree.…”

Flame-retardant mechanism of zinc borate and magnesium hydroxide in aluminum hypophosphite–based combination for TPE-S composites

“…1 In order to tailor its softness and processability, white oil is often added as extender oil. 2,3 In addition, several researchers have reported TPE blends of SEBS and polyolefin (PP 1,4,5 and high-density polyethylene (HDPE)) 6,7 that exhibited improved properties and enhanced performance through adjusting (PP and PE)/elastomer ratio. 5 However, the thermoplastic elastomer (TPE) based on SEBS mixed with polypropylene, polyethylene, and white oil makes it highly flammable and leads to intensive burning with smoke and soot production.…”