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ESD Materials

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Engineering Plastic Stock Shapes with Static Dissipative (ESD) Properties In recent years, industry has demanded a range of materials that not only possess strength, wear properties, heat and chemical resistance but materials that are less resistive to the build-up of a static charge.

TECAFORM™ SD
Surface Resistivity: 109 - 1011
Ensinger's static dissipative acetal contains no carbon fibers or powders and is generally accepted for clean room use. With its surface resistivity of 109 to 1011 ohm/square and its excellent bearing and wear characteristics, TECAFORM™ SD is ideal for moving components which may experience frictional or fluid-flow static charges.

HYDEL® PC7
Surface Resistivity: 105 - 107
A polycarbonate based material with a proprietary carbon filler component. The highly dispersed filler imparts outstanding electrical consistency to minimize any hot spots. The material has the best repeatability and predictability of any commercially available carbon based filler. HYDEL® PC7 has minimal sloughing as compared to other carbon- based fillers. This material also retains much of the physical properties of polycarbonate without the loss of impact and tensile properties that can occur with standard carbon based or fiber fillers.

HYDEL® PC-P ESD
Surface Resistivity: 107 - 1012
HYDEL® PC-P ESD polycarbonate is a static dissipative thermoplastic product containing carbon powder. This material has good stiffness, excellent dimensional ability, and low outgassing properties.

HYDEL® PEI7
Surface Resistivity: 106 - 108
A static dissipative polyetherimide utilizing proprietary filler technology which renders this material electrically conductive. This technology allows for good dimensional stability after machining (unlike conventional carbon fibers), consistent electrical properties, excellent surface quality and minimal sloughing. It also possesses outstanding toughness and excellent thermal stability.

TECAPEEK™ PVX
Surface Resistivity: 105 - 108
An ultra high performance bearing material based on the PEEK polymer. Some of the wear enhancing additive also provides a high degree of static dissipation. TECAPEEK™ PVX provides high temperature use with low thermal expansion.

SINTIMID ESD 23
Surface Resistivity: 108 - 1011
SINTIMID ESD 23 has the highest compressive strength and use temperature of the group. It is based on an Ensinger-Hyde manufactured polyamide-imide resin with a low sloughing, additive package.

  (OHMS/SQ) Typical Surface Resistivites  
  109 - 1012 Anti-Static - Initial charges are suppressed  
  106 - 109 Dissipative - No or low initial charges prevents discharge to or from human contact  
  102 - 105 Conductive - No initial charge, provides path for charge to bleed-off  



Electrostatic Dissipators


Static Electricity
Electrostatic Discharge (ESD)
Surface Resistivity
  • Stationary charges of electricity (voltage)
  • Generated by sliding or rubbing
  • Potential up to 40,000 Volts
  • Remains in localized Contact area (for plastics)
  • "Quick" voltage reduction
  • Caused by Arc or spark
  • Possible results:
    • Microcircuit damage
    • Painful shock
  • Resistance to electricity on a material surface (ohm/cm)
  • Higher—More Insulative (Most Plastics)
  • Lower—More Conductive (Most Metals)

 

Conductor

Conductor

Static Dissipators

Antistatic

Insulator

Surface Resistivity
-ASTM D257-
(Ohm/Cm)

106

102 - 106

106 - 1010

1010- 1012

1015 - 1017

Materials

Most Metals

Conductive Plastics*

Filled Plastics**

Filled Plastics**

Most Unfilled Plastics

  • ABS
  • Acetal
  • Polycarbonate
  • Polypropylene
  • PDVF (Kynar)
  • UHMW-PE
  • ABS
  • Acetal
  • Polycarbonate
  • Polypropylene
  • PDVF (Kynar)
  • UHMW-PE (Tivar Antistatic)
  • ABS
  • Acetal
  • Polycarbonate
  • Polypropylene
  • PDVF (Kynar)
  • UHMW-PE

*Filled with Carbon Powder, Carbon Fiber or Stainless Steel
**Filled with Carbon Powder, Carbon fiber or Coated Carbon Fiber.

 

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