Physical and mechanical properties of graphene and h-Boron nitride reinforced hybrid aerospace grade epoxy nanocomposites

Öztürkmen M. B., Öz Y., DİLSİZ N.

Journal of Applied Polymer Science, cilt.140, sa.45, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 140 Sayı: 45
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1002/app.54639
  • Dergi Adı: Journal of Applied Polymer Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Applied Science & Technology Source, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: aerospace applications, boron nitride, characterization, graphene, multifunctional materials, nanocomposites, thermosetting resin
  • Gazi Üniversitesi Adresli: Evet

Özet

Varying graphene nanoplatelet (GNP) and hexagonal boron nitride (h-BN) based fillers were integrated to an aerospace grade epoxy resin typically used as matrix to obtain or repair structural parts of aerospace platforms. The three-roll milling approach was used for this purpose. Five cycles were performed for the mixing while the gap between rollers was 50 μm. Microstructure and thermal properties of the nanocomposites were studied. Moreover, mechanical and transport (electrical as well as thermal) performances were investigated. Results show that certain fillers yield multifunctional properties, that is, enhanced flexural strength by up to 69% in combination with high electrical conductivities with orders of magnitude of approximately (Formula presented.) (Formula presented.) and improved thermal conductivities up to 9.3%. For instance, the hybrid nanocomposite sample produced with 0.5 wt% GNP and 0.5 wt% h-BN added to the epoxy matrix exhibits an electrical conductivity which increased (Formula presented.) fold, a flexural strength increased by 69% and thermal conductivity increased by 7% in comparison the neat epoxy. Hence, in this study it was demonstrated that these properties can be engineered and tuned effectively for aerospace applications like lightweight avionic chassis which have specific requirements like thermal and electric conductivity which naturally leads to the possible usage of GNP and h-BN in an epoxy. Correspondingly, presented results are of relevance for novel thermal interface materials with tailored electrical properties.