| 초록 |
Reinforced polymer composites have received attention due to high specific mechanical properties. However, the stiffness and toughness of the existing composites is still mutually exclusive. Herein, we report a way to achieve a combination of high mechanical properties (strength, stiffness, and toughness) for polymer composites by applying a design principle of nacre in a seashell. Nacre composed of a soft polymer matrix and stiff inorganic microplatelets within a layered structure shows unique fracture mechanisms such as an effective load transfer and fracture-resistance through a platelet pull-out and multiple cracking. Inspired from such structure and mechanisms, we fabricated structural polymer composites reinforced with layered microplatelets. The composite showed well-balanced mechanical properties and outstanding fracture resistance with multiple cracking mechanism. Our design strategy would be beneficial to develop mechanically robust composite materials. |
