Ultraviolet disinfection technology, as an efficient and environmentally friendly disinfection method, has been widely applied in water treatment, air purification, medical and health care, and other fields. In this technology, quartz glass, as a key protective component of ultraviolet lamp tubes, plays an irreplaceable role. This article will thoroughly explore the multiple advantages of quartz glass in ultraviolet disinfection equipment, conducting a comprehensive analysis from material properties to practical application effects.
- Excellent ultraviolet light transmission of quartz glass
The most notable advantage of quartz glass lies in its excellent ultraviolet light transmittance, which is the core reason why it is irreplaceable in disinfection equipment.
- High light transmittance
High-purity quartz glass has a light transmittance of over 90% for ultraviolet rays within wavelength of 200 to 280nm (especially the sterilization ultraviolet rays at 253.7nm). This characteristic ensures the efficient output of ultraviolet energy and significantly enhances the disinfection efficiency.
- Wide-spectrum transmittance
Quartz material is well-suited for use in various ultraviolet applications due to its high transmittance for UVC (200-280nm), UVB (280-315nm) and some UVA (315-400nm). This property enables quartz glass to meet the stringent requirements of ultraviolet equipment in various professional contexts.
- Stable optical performance
Quartz glass is renowned for its ability to maintain light transmittance over an extended period. This characteristic ensures minimal change in appearance due to prolonged exposure to ultraviolet rays, thereby preserving the disinfection effect over time.
- Excellent high-temperature resistance
When ultraviolet disinfection equipment is in operation, it generates a large amount of heat. Quartz glass’s high-temperature resistance makes it a reliable choice for this application.
- Extremely high upper limit of temperature resistance
The softening point of fused quartz is as high as 1730℃, which can withstand the high temperature generated by the operation of ultraviolet lamps without deformation or melting.
- Low coefficient of thermal expansion
Quartz has an extremely low coefficient of thermal expansion, which makes it less prone to cracking during repeated cold and hot cycles, significantly extending its service life.
- Mechanical strength and structural stability
- Highstrength
Quartz glass is renowned for its exceptional compressive strength, which can reach up to 1100MPa, and its flexural strength, which can reach 67MPa. These properties make quartz glass significantly stronger than traditional glass. It is able to withstand certain mechanical impacts and water pressure.
- Structure stability
Quartz glass has proven to be highly resilient to long-term vibration or minor shock, maintaining its structural integrity with a reduced risk of micro-fracture or breakage.
- Long-term reliability and economy
- Extremely long service life
High-quality quartz glass can last for 8,000 to 12,000 hours under normal usage conditions, matching the lifespan of ultraviolet lamps and reducing the frequency of replacement and maintenance costs.
- Slow performance degradation
Compared with other materials, the ultraviolet transmittance of quartz glass decays at an extremely slow rate, ensuring that the equipment maintains a stable disinfection effect throughout its entire life cycle.
- Low maintenance requirements
The self-cleaning and pollution-resistant attributes of quartz glass substantially reduce the workload associated with cleaning and maintenance, thereby minimizing operating costs.
Quartz glass, characterized by its high ultraviolet light transmittance, excellent thermal stability, superior mechanical strength, and long-term cost-effectiveness, has become an essential and indispensable component in ultraviolet disinfection equipment. With the ongoing advancement of ultraviolet disinfection technology and the expanding scope of its applications, high-performance quartz glass is expected to further capitalize on its unique properties to provide reliable solutions for the disinfection requirements across diverse industries.
