loader image

NEXACOOL

Boron Nitride Cooling Fillers

Precision Thermal Management with Boron Nitride Cooling Fillers

Redefine Heat Control with Safe, Efficient & Advanced Fillers

Boron Nitride Cooling Fillers are premium inorganic fillers with exceptionally high thermal conductivity, low dielectric loss, and excellent thermal shock resistance. Engineered for use in thermal interface materials (TIMs), heat sinks, thermal pastes, potting compounds, and high-performance polymers, these fillers enhance heat transfer, reduce hot spots, and improve overall thermal management in electronic, automotive, and industrial applications.

Unlike conventional ceramic fillers, boron nitride exhibits a unique combination of thermal conductivity and electrical insulation, making it ideal for demanding electronic and electrical thermal management solutions. Its plate-like structure provides anisotropic heat dissipation, allowing formulators to tailor thermal pathways based on application needs.

Available in multiple grades and particle size distributions, Boron Nitride Cooling Fillers can be optimized for high-loading dispersion in polymers, adhesives, coatings, and elastomers without significantly compromising mechanical properties or processability. These fillers support lightweight designs and enable performance improvements in next-generation thermal materials.

With excellent chemical stability and high temperature tolerance, boron nitride fillers maintain performance at elevated temperatures, making them suitable for power electronics, LED lighting, battery packs, and thermal interface applications. Their inert nature also ensures compatibility with most resins and matrix systems used in advanced thermal management formulations.

Products Offered

Boron Nitride – Grade GPBN-1005

A high-purity, ultra-fine h-BN powder (1–5 μm) engineered for advanced thermal, lubrication, and coating applications. Its optimized particle size delivers exceptional heat transfer, smooth surface finish, and outstanding dispersion.

A high-purity, fine h-BN powder (10–15 μm) designed for demanding thermal, lubrication, and coating applications. Its balanced particle size offers excellent thermal conductivity, superior surface slip, and consistent dispersion

A high-purity, coarse h-BN powder (30–100 μm) engineered for applications requiring enhanced thermal conduction, high-temperature stability, and superior lubricity. Its larger particle structure delivers excellent heat dissipation, reduced friction, and improved wear resistance

A high-purity, extra-coarse h-BN powder (100–200 μm) designed for extreme thermal and tribological performance. Its robust particle structure provides exceptional heat dissipation, outstanding high-temperature stability, and superior dry lubricity

Boron Nitride Coating – Grade GPBN-WB

A premium water-based Boron Nitride coating containing 30% active h-BN dispersed in a durable alumina binder. This white, ready-to-use coating delivers exceptional non-wetting behavior, high-temperature stability, and superior lubrication on metal, ceramic, and graphite surfaces.

A blue-colored, high-performance Boron Nitride coating formulated with a strong alumina-based binder to deliver excellent non-wetting, high-temperature lubrication, and clean-release properties. The coating provides outstanding protection against molten metal adhesion, oxidation, and wear on metal, graphite, and ceramic substrates.  

Why Choose Boron Nitride Cooling Fillers?

High Thermal Conductivity

Efficiently dissipates heat (up to 300 W/m·K) for high-performance electronic applications.

Electrical Insulation

Maintains strong dielectric strength, ideal for semiconductors and battery modules.

Low Density & Lightweight

Offers excellent processability and weight reduction compared to metal-oxide fillers.

Excellent Lubricity

Enhances flowability and mold release during polymer compound! Why Choose Boron Nitride Cooling Fillers?

Electrical Insulation

Maintains strong dielectric strength, ideal for semiconductors and battery modules.

Chemical Stability

Resistant to acids, alkalis, and oxidation — ensuring long-term stability.

Non-toxic & Environment-Safe

A safe, sustainable alternative to traditional thermally conductive additives.

Applications

Thermally Conductive Plastics & Elastomers Improve cooling efficiency in LEDs, EV components, sensors, and electronic housings.

Thermal Interface Materials (TIMs) Create stable, high-performance greases, pads, and adhesives with superior heat dissipation.

Encapsulants & Potting Compounds Protect sensitive circuits and power modules from overheating and electrical stress.

Battery & EV Cooling Systems Enhance thermal diffusion and safety in lithium-ion battery packs and control units.

Ceramic Composites & Coatings Reinforce materials exposed to high temperatures and harsh operating environments.

Advantages of Boron Nitride Fillers Over Other Fillers

Silica (SiO₂): Economical filler with low thermal conductivity

BN offers up to 20× better heat transfer and smoother finish.

Alumina (Al₂O₃): Hard and abrasive ceramic

BN gives similar thermal performance with lighter weight and easier processing.

Aluminum Nitride (AlN): High thermal conductor but costly and moisture-sensitive

BN provides balanced performance with better stability.

Graphite: Excellent heat conductor but electrically conductive

 BN transfers heat while remaining a perfect insulator.

Graphene / Carbon Nanotubes: Very high conductivity but expensive and difficult to disperse

BN achieves uniform dispersion and insulation.

Carbon Black: Adds color and conductivity

BN adds heat management, lubrication, and reflectivity instead.

 

Mica: Adds barrier properties

BN adds lubricity and high-temperature stability.

Magnesium Oxide (MgO): Decent conductor but reactive

BN remains inert, non-hygroscopic, and process-friendly.

Silicon Nitride (Si₃N₄): Mechanically strong but dense

BN provides similar durability at lower weight and easier dispersion.

Metallic Powders (Al, Cu): Great heat conductors but electrically active and oxidizing

BN delivers non-conductive, corrosion-free cooling.

Comparison of BN Cooling Fillers

Potential applications of BN Powders/Coatings

Thermally conductive, electrically insulating fillers (TIMs, potting, pads)

High in-plane thermal conductivity + excellent dielectric strength.

Applications: LED drivers, EV battery module potting, CPU thermal greases.

Thermally conductive plastics & elastomers

Boosts k-value without adding electrical conductivity; lightweight.

Applications: Polyamide/PP housings, sensor brackets, silicone gaskets.

Release agents & anti-stick coatings (molten metals, glass, rubber)

Chemically inert, non-wetting to Al/Mg/Zn; superb lubricity.

Applications: BN spray on casting dies, glass forming, rubber demolding.

Dry lubricants (high-temp / clean environments)

Graphite-like slip but non-carbon, works in vacuum/oxidizing atmospheres.

Applications: Aerospace mechanisms, oven chains, metal forming.

Refractory coatings & crucibles

Thermal shock resistance, oxidation resistance, non-wetting behavior.

Applications: BN-coated ladles, crucibles for Al/Mg melts, foundry mold wash.

Ceramic composites & sintered bodies

Low dielectric loss, machinability, thermal stability.

Applications: Microwave components, RF fixtures, insulator rings.

Electronics substrates & dielectric layers (2D materials stack)

Atomically smooth, chemically clean, wide bandgap dielectric.

Applications: h-BN substrate/encapsulation for graphene/MoS₂ devices.

Cosmetics & personal care

Silky slip, soft-focus/matte feel, oil absorption, whiteness.

Applications xample: Primers, powders, lipsticks, sunscreens.

Paints & industrial coatings

Lubricity + heat dissipation; anti-stick on hot tooling.

Applications: BN in high-temp coatings for welding nozzles, molds.

Oil & gas / machining fluids (additive)

Reduces friction/wear under pressure/heat; chemically inert.

Applications: Extreme-pressure lubricant additive for thread-making, valves.

Battery & energy systems

Thermal pathway + electrical insulation; chemical stability.

Applications xample: Separators/coatings, potting for BMS/IGBT modules.

Optical/UV components

Wide bandgap, UV transparency; thermal stability.

Applications: Deep-UV device encapsulation/insulation layers (niche/R&D).

Product Application

Cubic BN (c-BN) — superhard abrasive

Cutting tools & abrasives (PCBN)

Why: Second only to diamond in hardness; superior for ferrous alloys where diamond reacts.
Applications: PCBN inserts for hardened steel, cast iron finishing.

Grinding wheels & honing stones

Why: Maintains edge at high temps, minimal chemical wear.
Applications: Camshaft grinding, gear finishing.

BORON NITRIDE POWDERS

Grade Purity (B+N) Oxygen (O₂) Carbon (C) Boric Oxide (B₂O₃) Metallic Impurities Particle Size Specific Surface (BET) Shape of BN
GPBN-1300 > 99% ~0.5% ~0.05% < 0.3% < 0.2% 1–3 μm 6–8 m²/g Hexagonal Platelets
GPBN-4800 > 99% ~0.4% ~0.05% < 0.25% < 0.2% 4–8 μm 3–8 m²/g Hexagonal Platelets
GPBN-1013 > 99% ~0.6% ~0.05% < 0.3% ~0.18% 10–13 μm 2–7 m²/g Hexagonal Platelets
GPBN-1520 > 99% ~0.3% ~0.03% < 0.3% ~0.2% 15–20 μm 2–5 m²/g Hexagonal Platelets
GPBN-2830 > 99% ~0.4% ~0.03% < 0.3% ~0.2% 28–30 μm 2–5 m²/g Hexagonal Platelets
GPBN-3010 > 99% ~0.22% ~0.01% < 0.05% < 0.1% 30–100 μm 3–4 m²/g Hexagonal Flakes
GPBN-10150 > 99% ~0.47% ~0.01% < 0.05% < 0.1% 100–150 μm 2–3 m²/g Hexagonal Flakes
GPBN-7090 > 98.5% ~1% ~0.03% < 0.5% < 0.2% 7–9 μm 3–7 m²/g Hexagonal Platelets

BORON NITRIDE COATINGS

Grade Color BN% Carrier Binder pH Viscosity (cps) Specific Gravity (g/cc) Max Temp of Use (°C)
GPBN-WB White 20–30% Water Alumina 5.5–8.0 10,000–20,000 1.2 850
GPBN-BL Blue 20–30% Water Alumina 5.5–8.0 10,000–20,000 1.2 1370

Connecting Science, Sustainability,
and Global Innovation

At Geocon, we bridge the worlds of chemistry and biotechnology to create smarter, more sustainable solutions for industries worldwide. Our mission is to redefine performance — from advanced materials and enzyme technologies to clean chemistry innovations that drive progress and care for the planet.

Connecting Science, Sustainability,
and Global Innovation

At Geocon, we bridge the worlds of chemistry and biotechnology to create smarter,
more sustainable solutions for industries worldwide. Our mission is to redefine performance — from advanced materials and enzyme technologies to clean chemistry innovations that drive progress and care for the planet.