What is the Difference of ESD Foam and Conductive Foam? 2020-02-26

ESD foam also called anti static foam. The difference between esd foam and conductive foam mainly on the resistance. The resistance of anti-static foam is 10e6-10e11 Ω, and the resistance of conductive foam is 10e3-10e6 Ω.

Take ESD PE  foam and conductive PE foam for example.

Antistatic foam is a new type of polymer functional material with permanent antistatic effect, which is made by chemical, physical modification, high energy electron beam radiation cross-linking foaming and other processing technology.
Conductive foam is a kind of foam formed by extrusion of polyethylene or modified polyethylene with conductive fillers and anti static agents, cross-linked by radiation and foamed at high temperature.
The electrostatic half-life of conductive foam is much smaller than that of anti-static foam, and the electrostatic voltage of conductive foam is much lower than that of anti-static. However, both of them can release charge automatically, and conductive foam is more suitable for electronic products with high electrostatic sensitivity.


Anti Static polyethylene foam Properties

  1. Excellent electrical conductivity,Foam surface resistance:10e6-10e9
  2. Density 2.5-6.25 lb/ft
  3. Anti static low charging – minimizing electrostatic charge generation
  4. No chemical corrosion: It has no corrosion to the components and packaging
  5. Buffer good performance,ideal for protecting the devices.
  6. Provides protection from physical shock during handling, packaging, shipping, and storage of ESD sensitive devices
  7. Ideal for long term use
  8. Easy to adapt for custom uses by die-cutting, laminating, etc.
  9. Non-contaminating, non-corrosive, and non-sloughing
  10. Temperature resistance:IXPE maximum temperature 80℃.

Anti Static polyethylene foam Usage Consideration
  1. Not recommend for lead insertion applications.
  2. When exposed to the environment, the foam will not discolor over time
  3. When cutting or laminating, the foam surface resistance will change a little.

Conductive foam properties
  • Conductive foam surface resistance 10e3-10e6
  • Density 5-6.25lb/ft
  • Permanently conductive; will not lose electrical properties – can be used in applications where permanent ESD properties are required
  • Improved packaging against shock and vibration
  • Provides protection from physical shock during handling, packaging, shipping, and storage of ESD sensitive devices
  • Durable, resilient, attractive and light weight
  • Chemical resistance: resistant to organic solvents, acids, bases, etc.;
  • Non-contaminating, non-corrosive, and non-sloughing

Conductive foam Usage Consideration
· Better value for long term applications
· Not recommended in applications where Static Dissipative properties are required

All in all the properties of anti-static foam and conductive foam materials are similar, just the conductivity is different, one is conductive, the other is anti-static. It mainly depends on customer’s needs and cost considerations.


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