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Materiales de baja dureza interfacial para el deshielo eficaz a gran escala
Kevin Golovin1,2, Abhishek Dhyani2,3, M D Thouless4,5
1Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, USA.
Science (New York, N.Y.)
|April 27, 2019
Resumen
Los nuevos recubrimientos icefóbicos reducen la adhesión del hielo, permitiendo que grandes áreas de hielo se desprendan fácilmente por su propio peso. Esto supera los límites de escalabilidad para aplicaciones anti-hielo en estructuras como líneas eléctricas y cascos de barcos.
Área de la Ciencia:
- Ciencias de los materiales
- Ingeniería de superficies
- Tribología
Sus antecedentes:
- La acumulación de hielo tiene un impacto negativo en las actividades comerciales y residenciales.
- Los recubrimientos icófobos actuales se enfrentan a limitaciones de escalabilidad para superficies grandes debido a que la fuerza de eliminación del hielo se escala con el área.
Objetivo del estudio:
- Desarrollar nuevos materiales para el desprendimiento efectivo de hielo desde grandes superficies.
- Para superar las limitaciones de escalabilidad de los recubrimientos icófobos existentes.
Principales métodos:
- Caracterización de materiales con baja dureza interfacial con hielo.
- Prueba de las fuerzas de deshielo en superficies revestidas de diferentes tamaños (cm2 a m2).
- Demostración del desprendimiento de hielo mediante el auto-peso.
Principales resultados:
- Una nueva clase de materiales exhibe una baja adherencia al hielo, independiente del área helada.
- Las fuerzas de eliminación de hielo permanecen bajas incluso para áreas de varios centímetros cuadrados.
- Desprendimiento efectivo de hielo demostrado en superficies de ~ 1 metro cuadrado utilizando solo el peso propio.
Conclusiones:
- Los materiales desarrollados ofrecen una solución escalable para aplicaciones antihielo.
- Estos recubrimientos permiten una eliminación eficiente del hielo, reduciendo los costos de mantenimiento y operación.
- Las aplicaciones potenciales incluyen líneas eléctricas, cascos de barcos y otras estructuras grandes propensas a la acreción de hielo.
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