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The Universal Selection Source:
Polymer Additives

Boron nitride is an excellent heat conductor and electrical insulator with overall cost reduction while improving physical properties at lower loading.

Why should you consider Boron Nitride?

Combine Thermal Conductivity with Electrical Insulation using Boron Nitride

Various additives exist to formulate thermally conductive plastics but few deliver the range of possibilities offered by boron nitride (BN) in terms of design, performance and cost.
Thermal conductivity with electrical insulation using Bororn Nitride
Limitations of other additives include:
  • Design and cost issues: When a combination of thermal conductivity and electrical insulation is needed, metal particles, fibers, graphite or carbon can present significant challenges because they are usually offered as conductive or semi-conductive materials. Oftentimes, expensive additional electrical insulating layers are required.
  • Limited color freedom: Graphite, expanded graphite or carbon fibers usually result in black compounds.
  • Lower performance: Other ceramic materials typically require higher loadings, often compromising mechanical properties.(see table 1 below)
  • Higher extrusion costs: Abrasive alternatives can reduce the life of screws, dies, runners and molds.


BN is a white synthetic ceramic that is both an excellent conductor of heat and a dielectric material.

As a result, BN can provide one of the best performance / cost ratios when compared to other electrically-insulating fillers, enabling it to:
  • Deliver a unique compound / system offering excellent thermal conductivity and electrical insulation
  • Help meet the needs of the miniaturization trend and help users explore new applications by enabling a more compact design and part integration (thanks to electrical insulation)
  • Offer color freedom to meet market needs
  • Help improve the lifetime of compounding components. BN is soft and lubricious and does not abrade screws or other components.


Superior Thermal Conductivity and Electrical insulation with Boron Nitride
Table1. Superior Thermal Conductivity and Electrical insulation with Boron Nitride (BN)
Typical properties are average data and are not to be used as specifications.

Strong technical and compounding know-how work together to help lower costs in thermal management applications


Momentive has introduced a range of new CoolFX* hybrid fillers that can provide thermal conductivity performance at potentially lower cost.

Applying advanced ceramic technology and b compounding know-how, Momentive has developed one of the potentially best cost / performance ratio options to address thermal management challenges. These new hybrid fillers can offer:
  • High thermal conductivity at lower BN loadings
  • Improved physical properties vs. high BN-loaded compounds

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