Breakthrough in Nanotechnology: Improving Thermal Stability and Flame Retardancy of Silicone Rubber

Strategic Insights -

Researchers from the South China University of Technology have made a significant discovery in the field of nanotechnology, creating a new material that improves the thermal stability and flame retardancy of silicone rubber. The researchers, led by Jinping Qu, developed a method to fabricate iron oxide nanoparticles in-situ decorated boron nitride nanosheets (FeBN) and incorporated them into addition-cure liquid silicone rubber (ALSR). The resulting material showed remarkable properties, including a significant increase in thermal stability and flame retardancy.

Key Takeaways:

  • The researchers developed a method to fabricate iron oxide nanoparticles in-situ decorated boron nitride nanosheets (FeBN) and incorporated them into addition-cure liquid silicone rubber (ALSR).
  • The resulting material showed improved thermal stability, with a T-10 value of 438.2°C, a significant increase from previous values.
  • The material also demonstrated enhanced flame retardancy, with a LOI value of 28.5%, attributed to the synergism of free-radical quenching capability and layer barrier effect.
  • The FeBN uniformly dispersed in polymer and effectively improved the thermal stability and flame retardancy of ALSR at a relatively low concentration of 2.0 phr.
  • The study was supported by the National Natural Science Foundation of China (NSFC), National Key Research and Development Program of China, and National Natural Science Foundation of Guangdong Province.
  • The research has been peer-reviewed and published in the journal Materials Letters.

Statistics:

  • T-10 value of 438.2°C, representing a significant increase in thermal stability.
  • LOI value of 28.5%, indicating enhanced flame retardancy.
  • 2.0 phr FeBN concentration used to achieve improved thermal stability and flame retardancy.
  • Study supported by multiple Chinese government foundations, including NSFC and National Key Research and Development Program of China.
  • Research published in the journal Materials Letters, a reputable scientific publication.

Sources:

  • Qu, J., Qiu, J., & Wu, T. (2021). Fabrication of Iron Oxide Nanoparticle Decorated Boron Nitride Nanosheet for Flame-retarding Silicone Rubber. Materials Letters, 283.