Akademik Veri Yönetim Sistemi
TASHKENT INTERNATIONAL CONGRESS ON MODERN SCIENCES-III, Toskent, Özbekistan, 22 - 23 Nisan 2024, cilt.1, sa.1, ss.872-880, (Tam Metin Bildiri)
Driven by the depletion of fossil fuels, environmental concerns, and price instability, researchers are increasingly turning to innovative materials across various fields. Polymers' inherent advantages like reshapeability, recyclability, ease of processing, sustainability, and lightness are emerging as promising alternatives for future studies, mainly due to their recently discovered self-healing properties. Notably, polymers can be designed for self-healing regardless of their type: elastomeric, thermoplastic, or thermoset. While thermoplastics offer a simple self-healing mechanism through heating above their glass transition temperature, their structural applications remain limited. Polymer materials exposed to static and dynamic loading conditions are damaged at micro and macro levels. Micro-level damages that affect the properties of the material and macro-level damages that form cracks that cause destruction of the structure cause severe problems in the structure. Micro and macro capsules in autonomous systems that provide a versatile approach to self-healing methods are included in current research. This study used the macrocapsule approach, which gives materials the ability to self-heal after being damaged. Various high-performance materials continue to be developed due to their ability to repair damage and maintain mechanical properties. This study used reactive thermoplastics and macrocapsules, which are rarely considered among self-healing methods. The shell structure of the macrocapsules, which provides a more straightforward determination of the healing performance, consists of Polypropylene. Filled capsules containing the curing agent were placed in the polystyrene matrix used by dissolving with methyl ethyl ketone (MEK). Reactive thermoplastic acrylic resin diluted with MEK was used as the curing agent. As a result of the impact, micro and macro-level damages occur in the polypropylene matrix, and the capsules are broken. The curing agent in the capsule leaks into the matrix. After a while, the material regains its structural integrity thanks to the resin, the curing process of which is completed. Recovery functionality was observed in this study.