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Vieillissement des films multicouches

Vieillissement des films multicouches


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About the Book

Au départ, les couvertures de serre agricole étaient des films mono couche de polyéthylène. Depuis quelques années, on trouve des films tri couches alvéolaire ou non. Récemment, le film cinq couches a fait son apparition. Notre travail s'inscrit dans l'étude du comportement dés films multicouches dans le Nord Afrique, où s'accumule température, UV et vent de sable qui sont des éléments responsables du processus de vieillissement des serres agricoles dans cette région. Les comportements des films mono couche, tri couches alvéolaire et cinq couches seront comparés. Pour cela, les films multicouches ont subit différents vieillissements: vieillissement naturel durant sept mois (le tri-couches Agrofilm) et un vieillissement artificiel par température à 40°C et 50°C (de 0 à 5000 heures), sous UVA et température à 40°C et 50°C simultané (de 0 à 1000 heures), ainsi que par simulation de vent de sable (à 40°C pendant 8 heures). Nos suivis des modifications surface ont été réalisés par FTIR et par l'étude de tension de surface, ainsi que des modifications du matériau par AED et essais de traction. L'objectif de ce travail est de contribuer à l'étude des aspects tant théoriques qu'expériment


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Product Details
  • ISBN-13: 9783841670090
  • Publisher: Editions Universitaires Europeennes
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Spine Width: 7 mm
  • Width: 152 mm
  • ISBN-10: 3841670091
  • Publisher Date: 29 Jul 2015
  • Height: 229 mm
  • No of Pages: 124
  • Series Title: French
  • Weight: 240 gr


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