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ESD ELS

GEHR semi-finished products with the additional titles ELS respectively ESD possess a reduced surface resistivity. This property will be applied wherever static charge of plastic components needs to be avoided.
In sensitive applications such as electronics voltages of over 100 volts are already sufficient to irreparably destroy circuits. In fire-hazardous facilities sparkovers may cause fires or even explosions. The surface resistivity of unmodified plastics is over 1012 Ω.

  • ESD ≤ 1012 Ω
  • ELS ≤ 106 Ω

Following GEHR semi-finished thermoplastics

  • GEHR PVC-ELS®
  • GEHR PP-ELS®
  • GEHR PE-ELS®
  • GEHR PE-UHMW-ELS®
  • GEHR POM-ELS®
  • GEHR POM-ESD®
  • GEHR POM-ESD-FG®
  • GEHR PVDF-ELS®

are used in scopes like

  • semiconductor industry
  • fabrication of processors
  • dye-and varnish industry
  • woodprocessing and
  • mills

In addition to the electrical properties the various materials are offering following properties:

GEHR PVC-ELS®

Volume resistivity: ≤ 106 Ω
Surface resistivity: ≤ 103 Ω

Properties:

  • flame retardant
  • self-extinguishing
  • high chemical resistance
  • low water absorption

GEHR PP-ELS®

Volume resistivity: ≤ 102 Ω
Surface resistivity: ≤ 106 Ω

Properties:

  • low density
  • high chemical resistance
  • high tensile strength, high surface strength
  • brittle in the coldness

GEHR PE-ELS®

Volume resistivity: ≤ 104 Ω
Surface resistivity: ≤ 105 Ω

Properties:

  • low density
  • high toughness (also at low temperature)
  • food safe
  • very low water absorption

GEHR PE-UHMW-ELS®

Volume resistivity: ≤ 106 Ω
Surface resistivity: ≤ 106 Ω

Properties:

  • high abrasion resistance
  • improved sliding properties
  • good protection against stress cracking
  • food safe

GEHR POM®

Properties:

  • no microporosity
  • high thermal stability
  • high dimension stability
  • high strength

GEHR POM-ELS®

Volume resistivity: ≤ 101 Ω
Surface resistivity: ≤ 103 Ω

GEHR POM-ESD®

Surface resistivity: ≤ 1012 Ω

GEHR POM-ESD-FG®

Surface resistivity: ≤ 1,5 x 1012 Ω

POM-ESD-FG is additionally certified as food safe.

GEHR PVDF-ELS®

Volume resistivity: ≤ 104 Ω

Properties:

  • high tensile and mechanical strength
  • high chemical resistance
  • self-extinguishing
  • high UV-resistance

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