SELF-HEALING WITH THE VASCULAR SYSTEM

Kuzu Şahin E., Duran G., Yazıcı M.

3. INTERNATIONAL MARMARA SCIENTIFIC RESEARCH AND INNOVATION CONGRESS, İstanbul, Türkiye, 19 - 20 Kasım 2022, cilt.1, sa.1, ss.1

  • Yayın Türü: Bildiri / Özet Bildiri
  • Cilt numarası: 1
  • Basıldığı Şehir: İstanbul
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

In recent years, smart and functional materials development has gained significant value with studies in materials science. Materials with self-healing properties, known as smart materials, autonomously repair the damage caused by external loading and time-related effects on the structure. These materials are used in many areas, such as automotive, aerospace, shipbuilding, and wind turbine blades. These materials, which contribute to prolonging the service life with the prominence of the studies on sustainability and increase the strength without manual intervention, are vital in eliminating the defects in the structures by helping to repair micro and macro cracks. Self-healing materials inspired by natural healing processes are required to repair structural damage independently. Vascular systems, which provide cyclic healing in areas where multiple healing is desired, provide structural healing in the areas where damage occurs by transporting the healing agent over a long distance in the crack and delivering large volumes of healing agent to the crack. The vascular system, placed in areas where damage is expected, maintains its integrity and provides healing. This indicates that the vascular systems can repair large volumes of damage. In this study, vascular network structure was obtained by using PVDF and polyolefin-based hollow thin tubes. Cyanoacrylate and epoxy were used as curing agents and matrix materials, respectively. Sodium carbonate was added to the matrix as an activator, which allowed the curing agent to cure quickly. On the thin tubes intended to serve as a vascular structure, holes were pierced with a needle, allowing the agent in the structure to leak into the cracks created in the matrix. Instant improvements were observed with cyanoacrylate leaking into micro and macro cracks.

Keywords: Self-healing materials, Vascular system, Epoxy resin, Cyanoacrylate

 

Acknowledgment: This study is supported by TUBITAK (The Scientific and Technological

Research Council of Turkey) via TEYDEB-1505 PROGRAM, Project Number: 5220011.