The zetafluẍ® product in the Lydall fluẍ product family is a multi-layer composite shield designed for application environments marked by aggressive vibration and noise generation.  The composite material is designed to damp the vibration response across a broad band of frequencies which reduces mechanical stress resulting from inertial forces and essentially eliminates parasitic noise generation.

 Viscoelastic Layer

Low Temperature (LT)

  • Tshield < 140 ° C
  • Laminated Polyethylene

Mid Temperature (MT)

  • Tshield < 220 ° C
  • Co-Laminated Acrylic

High Temperature (HT)

  • Tshield < 350 ° C
  • Co-Laminated Silicon

Metallic Layers

  • Aluminum 1050-O or 1100-O depending on the market
  • Gauges from 0.1 mm to 1.0 mm are possible
  • 2 x 0.3 mm is a common composite and consistently provides desired results

Thermal Performance

  • Low emissivity surfaces for high infrared radiation environments
  • High lateral thermal conductivity to spread heat away from hot zones
  • The viscoelastic layer will provide a small reduction in cold side temperature
  • High operating temperatures

Acoustical Performance

  • High transmission loss for better acoustic isolation
  • Marked vibration damping
  • Essentially acoustically transparent – no contribution to noise levels
    • No cooling ping
    • No impact ring

Mechanical Performance

  • Improved damping reduces the vibration response and transmissibility of the heat shield resulting in a decreased stress response due to inertial loading

General Performance Characteristics

  • Resistance to all common automotive fluids 
  • Non-inflammable composite per FMVSS 302
  • Long-Term high temperature resistance
  • No delamination