In UV germicidal lamps, quartz tubes and Teflon materials each have different optical and physical properties. Quartz tubes are often chosen as the protective housing for UV germicidal lamps rather than Teflon, mainly because quartz has better UV transmittance and heat resistance. Here are a few key reasons to choose a quartz tube over Teflon:
1. Ultraviolet transmittance
Quartz tube: The permeability of quartz glass to ultraviolet rays, especially UVC (200-280 nm) is very high, usually up to more than 90%. This high transmittance is a key feature of UV germicidal lamps, as it ensures that more UV rays can effectively reach the target area, thus achieving a stronger germicidal effect.
Teflon: Although Teflon has a certain permeability to some bands of ultraviolet light, its permeability to UVC is much lower than that of quartz. This means that using Teflon as a housing material significantly reduces the intensity of the UV output, which reduces the bactericidal effectiveness.
2. Heat resistance
Quartz tube: Quartz has extremely high heat resistance and can withstand high temperatures without deformation or deterioration. Uv lamps generate a lot of heat when working, and quartz is able to maintain its structure and optical properties, ensuring the stable operation of the lamps.
Teflon: Teflon is better at heat resistance, but still worse than quartz. Under high temperature conditions, Teflon may deform or age, which may affect the life and performance of the luminaire.
3. Chemical stability
Quartz tube: Quartz has a very high tolerance to most chemicals and is not prone to chemical reactions. Uv germicidal lamps may react with oxygen in the air to produce ozone when working, and the chemical stability of quartz can avoid adverse reactions with these reactive substances to ensure the long-term use of the lamp.
Teflon: Although Teflon also has good chemical stability, it may release harmful substances under certain extreme conditions (such as decomposition at ultra-high temperatures). Therefore, quartz is still the safer choice.
4. Optical cleanliness
Quartz tube: The optical properties of quartz material allow it to achieve extremely high purity and transparency in the manufacturing process. This helps to maximize the transmission efficiency of ultraviolet light and ensure the effectiveness of the germicidal lamp.
Teflon: The manufacturing process of Teflon can result in unevenly distributed microstructure inside the material, which can affect the transmission of ultraviolet light, resulting in the scattering and reflection of light, thereby reducing the efficiency of the luminaire.
conclusion
The application of quartz tube in ultraviolet germicidal lamp has the following significant advantages:
* High UV transmittance, especially in the UVC band, ensures maximum bactericidal effect.
* Excellent heat resistance and chemical stability, suitable for long-term use in high temperatures and complex environments.
* With high optical purity, can effectively transmit ultraviolet rays.
In contrast, while Teflon performs well in some applications, in UV germicidal lamps, the optical and physical properties of quartz tubes are more suitable for this application, so quartz tubes are often chosen as the housing material for lamps.
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Shenzhen Hechuang Hitech CO., LTD. is a National High-tech Enterprise, which has won a number of invention patent technology awards. We focuses on the Research, Development, Production and Application of UVC-LED Technology. It adopts innovative technologies of revolutionary optics and fluid science, which can kill bacteria and viruses in 0.2 seconds, with a sterilization rate of 99.999%. Hechuang Hitech provides safer, more efficient and more humanized sterilization module design for Water Air and Surface Disinfection products.
