Work

Core–Shell Structured BaTiO 3 @Polyethylene in Low‐Density Polyethylene: Modulation of Dispersion Structure and Improvement of Dielectric Properties

Year: 2025

Type: article

Abstract: ABSTRACT Organically modified dielectric filler nanoparticles with core–shell structures have received widespread attention when designing composites with excellent dielectric properties. Herein, the core–shell structured BaTiO 3 @polyethylene (BT@PE) nanoparticles were prepared and the models of BT@PE filled low‐density polyethylene (LDPE) composites were constructed. The interaction modulated nanoparticle dispersion structure and the effect of the core–shell structured BT@PE on the polarization and breakdown of the composites were studied by molecular dynamics (MD) simulations and finite element analysis (FEA). The results show that BT@PE modulated the interactions between particles, formed a well‐dispersed structure in the LDPE matrix, and optimized the electric field distribution inside the composites. Moreover, due to the existence of microscopic transition layer, the core–shell structured BT@PE increased the interfacial polarization while suppressed the electric field distortion. BT@PE nanoparticles simultaneously enhanced the dielectric constant and breakdown strength of the composites.

Source: Journal of Applied Polymer Science

DOI: 10.1002/app.56829

Authors: Ruitian Bo, Zhidong Han, Tiefeng Zhang, Yongliang Wang, Peigang He

Institutions: Harbin University of Science and Technology, Harbin University of Commerce, Harbin Institute of Technology

Language: English

Topic: Dielectric materials and actuators

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funder: Natural Science Foundation of Heilongjiang Province

Award: G6405196686