Thermally conductive h-BN/EHTPB/epoxy composites with enhanced toughness for on-board traction transformers
نویسندگان
چکیده
Abstract The dry-type on-board traction transformer (DOBTT) has the characteristics of huge heat generation and high dissipation requirements, so it higher requirements for performance epoxy resin (EP) insulation. However, toughness existing thermal conductivity EP composite after being modified by inorganic particles is greatly reduced, very easy to crack under occasion frequent vibration such as electric multiple units or locomotives, cannot be directly applied DOBTT. In this article, using h-BN improve conductivity, epoxidized hydroxy-terminated polybutadiene (EHTPB) liquid rubber was prepared. After characterization testing, found that when EHTPB content between 10 15 phr, elongation at break EP/h-BN/EHTPB could increased 47.9% impact strength 47.8% compared with without EHTPB. electrical performances were still satisfactory, which a potential in application equipment.
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ژورنال
عنوان ژورنال: E-polymers
سال: 2022
ISSN: ['1618-7229', '2197-4586']
DOI: https://doi.org/10.1515/epoly-2022-0076