January 4, 2026 - Industry research indicates that quartz fiber, with its outstanding dielectric properties, is gradually becoming an ideal material choice for high-frequency and high-speed copper clad laminates (CCL), providing key support for technological upgrades in emerging fields such as 5G communications and automotive electronics.
    As the core substrate of printed circuit boards (PCB), the performance of CCL directly affects the signal transmission quality of electronic devices. Currently, glass fiber cloth is the mainstream reinforcing material for CCL, among which low-dielectric electronic cloth has gained prominence in high-frequency applications. The NE series low-dielectric glass fiber cloth launched by Japan's Nitto Boseki has been widely used in scenarios such as 5G base stations and autonomous driving radars. The third-generation NEZ-glass is expected to be launched in 2026, further reducing dielectric loss.
     Quartz fiber, however, offers even greater performance advantages. Data shows that the dielectric constant of quartz fiber is only 3.7/3.74 at 1MHz/10GHz, and its dielectric loss factor is as low as 0.0001/0.0002, significantly outperforming traditional glass fibers such as D-glass and E-glass. This characteristic enables it to effectively reduce signal delay, crosstalk, and energy loss, perfectly adapting to the needs of GHz-level signal transmission and playing a crucial role in ensuring signal integrity in high-density interconnect (HDI) and flexible circuits.
      With the evolution of 5G communications towards millimeter waves, the improvement of AI server computing power, and the maturity of autonomous driving technology, the market demand for materials with low electromagnetic interference (EMI) and high signal stability continues to surge. Leveraging its core advantage of ultra-low dielectric loss, quartz fiber is expected to replace traditional glass fiber as the core material for high-frequency and high-speed CCL, boasting broad application prospects in future fields such as 6G communications and aerospace.
    Industry insiders stated that the industrial application of quartz fiber will drive the upgrading of the electronic materials industry and help achieve a qualitative leap in the performance of related terminal products. Currently, leading global enterprises have accelerated the layout of technological R&D and capacity building in this field.

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