Study on thermal and dielectric performances of polyoxymethylene/thermoplastic polyurethane/multilayer graphene composites

Bo Song; Hong Deng; Junli Li; Xueliang Liang

doi:10.1117/12.3015261

6 February 2024 Study on thermal and dielectric performances of polyoxymethylene/thermoplastic polyurethane/multilayer graphene composites

Bo Song, Hong Deng, Junli Li, Xueliang Liang

Author Affiliations +

Proceedings Volume 12979, Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023); 129791D (2024) https://doi.org/10.1117/12.3015261
Event: 9th International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023), 2023, Guilin, China

Abstract

Polyoxymethylene (POM)/ Thermoplastic Polyurethane (TPU) / Multilayer Graphene (MLGN) composites were prepared by mechanical processing using twin screw extrusion, and their thermal and dielectric performances were studied. The results show that MLGN can promote the decomposition of pure POM, but the thermal stability of POM can be greatly improved after adding TPU. MLGN has nucleation effect and can increase the crystallization temperature of POM. The heat distortion temperature of POM/TPU/MLGN composites increases with the increase of MLGN. The dielectric constant of POM/TPU/MLGN composites increase with the increase of the content of multilayer Graphene. At a content of about 9%, the dielectric constant of the composite material sharply increases, indicating the occurrence of a percolation channel. The dielectric constant of POM/TPU/MLGN composites is bigger and the dielectric loss factor is smaller at lower frequencies, and the dielectric constant is smaller, and the dielectric loss factor is bigger at higher frequencies.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Bo Song, Hong Deng, Junli Li, and Xueliang Liang "Study on thermal and dielectric performances of polyoxymethylene/thermoplastic polyurethane/multilayer graphene composites", Proc. SPIE 12979, Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023), 129791D (6 February 2024); https://doi.org/10.1117/12.3015261

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KEYWORDS

Composites

Dielectrics

Graphene

Crystallization

Polymers

Polyurethane

Distortion

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