Protección pasiva contra incendios: Pinturas Intumescente de Perlita y Vermiculita
La pintura intumescente contra el fuego de Perlita y Vermiculita es una pintura especial a base de agua compuesta por resinas de acetato de polivinilo y ligantes que se aplica sobre superficies para proporcionar protección contra el fuego.
Su objetivo principal es retardar la propagación del fuego y, además, retrasa el deterioro del soporte.
¿Cómo funciona?
Durante un incendio, se produce un proceso llamado intumescencia, en el cual la pintura se expande y forma una capa de espuma aislante y carbonizada. Esta capa actúa como una barrera térmica que protege la superficie subyacente, evitando que alcance temperaturas críticas y se debilite o colapse.
Usos de las pinturas intumescentes
Las pinturas intumescentes de Perlita y Vermiculita se aplican en elementos estructurales críticos y proporcionan una barrera resistente al fuego, permitiendo a las personas evacuar de manera segura y brindando tiempo adicional. Además de su eficacia en la protección contra incendios, estas pinturas ofrecen otra ventaja que es la de adaptarse a diferentes superficies, su fácil aplicación y mantenimiento. Algunos de los elementos en los que se puede aplicar la pintura son:
- Estructuras de acero: Las pinturas intumescentes se aplican en estructuras de acero para protegerlas contra el fuego. Estas pinturas forman una capa aislante y carbonizada que retrasa la transferencia de calor al acero, evitando así su debilitamiento y colapso prematuro durante un incendio.
- Túneles: Los túneles son espacios cerrados donde el fuego puede propagarse rápidamente. La aplicación de pinturas intumescentes en las superficies internas de los túneles ayuda a retrasar la propagación del fuego y proporciona una protección adicional a las personas que transitan por ellos.
- Estructuras de madera: Las pinturas intumescentes también se pueden utilizar en estructuras de madera para mejorar su resistencia al fuego. Estas pinturas forman una capa aislante que retarda la propagación del fuego y reduce la velocidad de carbonización de la madera, proporcionando más tiempo para la evacuación y el control del incendio.
- Puertas y cerramientos: Las pinturas intumescentes se aplican en puertas y cerramientos cortafuegos para mejorar su capacidad de resistir el fuego. Estas pinturas forman una capa protectora que retrasa la penetración del calor y las llamas a través de las superficies, lo que permite que las puertas y los cerramientos mantengan su integridad estructural durante más tiempo.
- Conductos y sistemas de ventilación: Los conductos y sistemas de ventilación pueden ser vías de propagación del fuego y el humo. La aplicación de pinturas intumescentes en estas estructuras ayuda a limitar la propagación del fuego y el humo, protegiendo así las rutas de evacuación y los espacios adyacentes.
Aplicación de la pintura intumescente contra el fuego
Para garantizar un correcto funcionamiento de la pintura intumescente contra el fuego y lograr una adhesión adecuada a la superficie, es necesario aplicarla sobre superficies limpias, libres de grasa, polvo, aceite y suciedad, así como de cualquier otro contaminante que pueda impedir una unión adecuada del producto con la estructura. Si hay presencia de corrosión, óxido o aceites, es necesario realizar los procedimientos necesarios para eliminarlos antes de aplicar la pintura intumescente.
Para lograr un acabo de calidad, generalmente se recomienda aplicar al menos dos capas de pintura intumescente utilizando equipos adecuados, cubriendo toda la superficie, incluyendo vigas y columnas. La primera capa sirve para comprobar la adherencia y proporcionar protección contra la corrosión. Si es necesario, se puede aplicar una imprimación anticorrosiva antes de la pintura intumescente. En cualquier caso y de manera opcional, para reforzar la protección y mejorar el acabado, se puede aplicar una capa de esmalte ignífugo al final.
Productos Destacados
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En Diperplac somos conscientes de la importancia de la sostenibilidad en el sector de la construcción. En nuestros almacenes disponemos de una variedad de productos respetuosos con el medio ambiente. Trabajamos con proveedores como Placo, Weber, Isover o Rockwool que invierten en la investigación y desarrollo de materiales busca reducir su impacto ambiental y mejorar la eficiencia energética de los edificios.
