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Boron Nitride Nanotubes(BNNTs): High Thermal Conductivity Heat Dissipation Fillers

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Boron Nitride Nanotubes(BNNTs): High Thermal Conductivity Heat Dissipation Fillers

BNNTs share the tubular structure of carbon nanotubes but deliver fundamentally different properties: electrical insulation, superior thermal stability (up to 900°C in air), and high thermal conductivity. With a wide bandgap of ~5.5 eV, they offer consistent, predictable performance where CNTs fall short.

  • product origin:

    CN
  • shipping port:

    Shenzhen,Hongkong
  • color:

    grey or white
  • lead time:

    In stock
  • payment:

    T/T
pPoduct Details

Boron Nitride nanotubes BNNTs
Product Name: Boron Nitride Nanotubes
Synonym: Boron Nitride Nanotubes (BNNTs)
Molecular Formula: BN
Diameter: <100 nm
Length: >20 μm
Purity: 90–95%
Appearance: Grayish-white
CAS No.: 10043-11-5

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Inquiries welcome.


Boron nitride nanotubes (BNNTs) are an alternative form of boron nitride. Similar to carbon nanotubes (CNTs) in structure, both are cylindrical bodies with nanometer-scale diameters and micrometer-scale lengths. However, while BNNTs are composed of hexagonal boron nitride formed by boron and nitrogen bonding, carbon nanotubes consist of a hexagonal carbon lattice. 


Despite their structural similarities, their properties differ significantly. Carbon nanotubes exhibit metallic or semiconducting electrical behavior, whereas boron nitride nanotubes are electrical insulators.




Properties and Application Directions of Boron Nitride Nanotubes:

1. In recent years, boron nitride nanotubes have gradually become a research hotspot in physics, mechanics, and electronics. BNNTs possess a wide atomic bandgap, behaving as electrical insulators, and exhibit excellent strength, electrical, and thermal stability properties, making them highly promising for applications in mechanical composites, optoelectronics, electronics, and nanodevices.

2. Boron nitride nanotubes not only feature high thermal conductivity and oxidation resistance but also demonstrate high thermal stability and stable chemical properties. These characteristics render BNNTs highly applicable in electronic devices operating under harsh conditions such as high temperatures and high power.

3. As electronic products increasingly trend toward high integration, miniaturization, multifunctionality, and lightweight design, the information technology (IT) industry urgently needs to address the resulting thermal dissipation challenges. The heat generated by electronic products can cause device failures and shorten service life. Electrically insulating, thermally conductive epoxy-based composites containing boron nitride nanotubes (BNNTs) offer an effective solution to these problems.

4. Boron nitride nanotubes exhibit excellent biocompatibility; therefore, their use as nanocarriers and nanosensors in the biomedical field is recommended.

5. As high-temperature structural materials, boron nitride nanotubes (BNNTs) possess superior thermal and chemical stability compared to carbon nanotubes (CNTs). BNNTs can be employed as lightweight structural materials for radiation shielding.

6. Boron nitride semiconductor nanotubes, as wide-bandgap materials, exhibit outstanding physical properties and good chemical inertness, making them ideal electronic materials for fabricating high-reliability devices and circuits. Unlike carbon nanotubes, whose electronic structures are strongly dependent on diameter and chirality, boron nitride nanotubes typically display stable and consistent electrical characteristics. Achieving doping in BNNTs to induce semiconducting properties is also key to realizing large-scale applications of this material.

7. In engineering materials, boron nitride nanotubes function similarly to steel reinforcement in concrete, enabling components to achieve higher strength while maintaining lighter weight.


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