This Troubleshooting Guide will help you:

  • analyze some of the problems encountered in the manufacturing of ESD protected parts,
  • determine the potential causes, and
  • suggest solutions.
Poor Electrical Properties

Causes

Solutions

Insufficient conductive filler content

  • Increase carbon black content in compound.

  • Avoid dilution during processing

Overdispersion
  • Reduce shear during compounding or processing

Underdispersion
  • Review compounding conditions to provide sufficient carbon black dispersion
Surface defects: pips, smears, rough surface
Causes Solutions
Undispersed carbon black
  • Modify compounding conditions to improve dispersing
  • Check carbon black suitability for the final application
Polymer degradation
  • Review compounding or processing conditions (shear, temperature, screw profile…)
Contaminants present in the product
  • Check for: possible sources of external contamination, resin quality.
  • Ensure equipment is clean
Moisture
  • Dry compound prior to processing
Poor mechanical properties

Causes

Solutions

Undispersed carbon black
  • Review compounding conditions to improve dispersion

Contaminants present
  • Check for: possible sources of external contamination, resin quality.

Polymer Degradation
  • Optimize molding or extrusion conditions

 

News

Cabot Plans Major Global Expansion of Carbon Black Manufacturing
16-Mar-2011

Cabot Signs Agreement with Risun for New China Carbon Black Manufacturing
15-Mar-2011

Events

Cabot at PlastIndia
1-Feb-2012

Carbon Black Interactive Learning Module

Take this self-guided tour to learn more about the functionality of carbon black. Link

Downloads

Product Literature

Find more Downloads