ETFE (ethylene tetrafluoroethylene) and its use in tensile membrane structures.

• Material Properties:
  • Fluoropolymer material used in tensile membrane construction.
  • Thickness ranges from 0.05 to 0.25 mm.
  • High transparency and tear resistance.
  • Long service life (up to 50 years).
• History and Applications:
  • Invented by DuPont for the aerospace industry.
  • Increasingly used in construction for cladding, walls, and roofs.
  • Early used in greenhouses (agriculture) and require frequent replacement of polyethylene sheets .
• Advantages for Tensile Fabric Structures :
  • “Pillow design”: Creates lightweight, modular structures.
  • Cost-efficient solutions: Simple and efficient construction methods.
  • Geometric design flexibility: Allows for various shapes.
  • Single or double layer options: Single layer for basic applications, double layers-five layers(“pillow”) for inflated structures added pattern and climate control.
  • Air pressure control: Maintained between 200-750 Pa for stability depending on design, loads and location.

Additional Points to Consider:

• Sustainability: While durable, the environmental impact of ETFE production and disposal needs to be considered during the design and lifecycle assessment of a project.
• Maintenance: Regular cleaning and inspections on pressure are necessary to maintain transparency and performance.
• Fire Safety: Fire safety regulations for ETFE in building applications must be addressed.

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