Fabrication and Performance Study of the Alumina-filled polypropylene Matrix Composites

Haijun Zhou; Mingguang Hu; Lu Bai; Fujie Li; Fen Zhang; Xiaoqi Chen; Yantao Li

doi:10.54097/mr6tb080

Authors

Haijun Zhou
Mingguang Hu
Lu Bai
Fujie Li
Fen Zhang
Xiaoqi Chen
Yantao Li

DOI:

https://doi.org/10.54097/mr6tb080

Keywords:

Polypropylene (PP), Alumina (Al2O3), Composite Material, Mechanical Properties

Abstract

Using the Polypropylene (PP) as the continuous phase matrix and the Alumina (Al₂O₃) as functional filler, the Al₂O₃-filled PP matrix composites were fabricated after the surface modification of Al₂O₃by silane coupling agent KH-570. The effects of Al₂O₃with different particle sizes and different filling amounts on the mechanical properties, thermal stability, dielectric properties and melting crystallization behavior of the composites were studied. The research results show that as the particle size of Al₂O₃ increases, the impact strength of composites gradually rises. With the increase of Al₂O₃filling amount, the tensile modulus and bending modulus of the composite material gradually increase, as well as the thermal decomposition temperature. In addition, the crystallization temperature and the dielectric constant of the composite material enhance as the increase of Al₂O₃filling amount, but the melting temperature does not change much.

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