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Rubber Reinforced with Single-Walled Carbon Nanotubes | New Technology Boosts Durability and Electrical Conductivity of NBR

2023-08-07

By adopting single-walled carbon nanotube technology, OCSiAl has developed a new range of products that boost the reinforcing performance and electrical conductivity of nitrile butadiene rubber (NBR).

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Incorporating 0.2% single-walled carbon nanotubes delivers a 53% rise in modulus and a 42% improvement in tear strength, and strengthens the rubber’s resistance against harsh environments.  

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SWCNT-reinforced rubber products feature superior durability and efficiency, enabling lower consumption of raw materials.

Nitrile Butadiene Rubber (NBR)

Possessing outstanding oil and fuel resistance alongside high-temperature stability, NBR is commonly utilized in automotive, aerospace, oil and gas sectors to produce fuel hoses, O-rings, industrial rollers, cable sheaths and other molded parts.


Single-walled carbon nanotubes developed by Luxembourg-based OCSiAl represent a novel reinforcing and conductive material suitable for a wide range of polymers.
It is an innovative reinforcing and conductive material suitable for all types of polymers.

It forms a conductive and reinforcing network structure within the material matrix. Even at ultra-low loading levels, it can toughen polymers, improve fatigue performance, reduce aging loss and enhance electrical conductivity. The latest solution features a newly developed product series for high-performance rubber, enabling significant performance improvements of nitrile butadiene rubber (NBR) composites.




Adding 0.3% SWCNTs to carbon black-filled nitrile butadiene rubber delivers：


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53% higher modulus (M50-200)
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42% improved tear strength

There is no notable deterioration in rubber elasticity, processing performance or other physico-mechanical properties.


另一项有发展前景的应用是

将单壁碳纳米管添加到白炭黑补强填充的丁腈橡胶配方中，实现107 Ω∙cm的防静电性能并符合静电耗散(ESD)标准、撕裂强度提高35%、模量M50-M300提高50%、生产彩色的最终产品、并且材料表面没有碳释放。相比之下，之前其它的导电解决方案可能导致物理机械性能的急剧下降，影响着色，并且由于所需导电填料的高添加量而引起混炼胶的其它问题。添加单壁碳纳米管实现的新性能组合有效扩大了导电丁腈橡胶的应用范围。

在配备传感器的工厂中，高端橡胶用于自动化系统元件，机器人识别零部件所需要的颜色和电导率。
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另一项有发展前景的应用是

将单壁碳纳米管添加到白炭黑补强填充的丁腈橡胶配方中，实现107 Ω∙cm的防静电性能并符合静电耗散(ESD)标准、撕裂强度提高35%、模量M50-M300提高50%、生产彩色的最终产品、并且材料表面没有碳释放。相比之下，之前其它的导电解决方案可能导致物理机械性能的急剧下降，影响着色，并且由于所需导电填料的高添加量而引起混炼胶的其它问题。添加单壁碳纳米管实现的新性能组合有效扩大了导电丁腈橡胶的应用范围。

在配备传感器的工厂中，高端橡胶用于自动化系统元件，机器人识别零部件所需要的颜色和电导率。
图片
另一项有发展前景的应用是

将单壁碳纳米管添加到白炭黑补强填充的丁腈橡胶配方中，实现107 Ω∙cm的防静电性能并符合静电耗散(ESD)标准、撕裂强度提高35%、模量M50-M300提高50%、生产彩色的最终产品、并且材料表面没有碳释放。相比之下，之前其它的导电解决方案可能导致物理机械性能的急剧下降，影响着色，并且由于所需导电填料的高添加量而引起混炼胶的其它问题。添加单壁碳纳米管实现的新性能组合有效扩大了导电丁腈橡胶的应用范围。

在配备传感器的工厂中，高端橡胶用于自动化系统元件，机器人识别零部件所需要的颜色




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The single-walled carbon nanotube predispersion consists of eco-friendly materials and can be uniformly dispersed into rubber without altering existing rubber formulations.

Its paste form enables dust-free production. No separate production procedures or dedicated equipment are required, as it can be incorporated during standard mixing processes. Further testing of SWCNT-reinforced NBR components under various harsh environmental conditions is currently underway.


For example


Like other high-performance rubbers such as EPDM, NR, BR and FKM, nitrile butadiene rubber (NBR) can achieve significant improvements in mechanical and electrical properties through the addition of low dosages of single-walled carbon nanotubes (SWCNTs). The enhanced durability and long-term electrical conductivity enable the industry to manufacture more efficient products, reduce costs associated with transportation and defective component replacement, and ultimately lower raw material consumption.


TUBALL™ MATRIX Single-Walled Carbon Nanotube Pre-Dispersion for NBR
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Core Advantages：

- Anti-static performance: 10 Ω·cm

  • Up to 53% improvement in modulus (M50-M300)



  • Up to 35% improvement in tear strength


- No negative impact on rubber hardness or elongation


- No carbon blooming on the material surface


                                                                                                       

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