26,Aug,2024

What materials are permeable to UV lamp radiation?

Different materials have different transmission properties for UV light. Ultraviolet (UV) light is usually categorized into three main bands: UVA (315-400 nm), UVB (280-315 nm), and UVC (100-280 nm). Of these, the UVC band of UV light has the strongest germicidal effect, but is also the most readily absorbed by most materials. The following are a few materials that can transmit UV radiation: 

1. Quartz Glass: Quartz glass can transmit most UV radiation, including the UVC band. For this reason, quartz is often used to make lamps for UV lamps.

2. Specialty plastics: Certain types of plastics, such as polymethylmethacrylate (PMMA, also known as plexiglass), can transmit ultraviolet light to a certain extent, especially in the UVA band. However, ordinary plastic materials usually do not transmit UVC band of ultraviolet light. 

3. Specific coatings: Some materials can be treated with special coatings to increase their UV transmittance, but this does not usually mean that they are naturally transmissive, but rather that it is achieved through special processing. 

In contrast, the following materials do not transmit UV or only partially transmit UV: 

Ordinary glass: Ordinary glass (soda-lime glass) does not normally transmit UVC and most UVB wavelengths, but is somewhat transmissive for longer wavelengths in the UVA band.

Metals: Metallic materials usually reflect or absorb UV rays and allow little to no UV light to pass through. 

Ceramics: Ceramics also do not allow UV transmission. 

Most plastics: With the exception of certain types, most plastics are impervious to UVC and UVB wavelengths. 

Textiles: Ordinary clothing and other textiles are also impervious to UV transmission. 

In summary, if you need a material that is transmissive to UV light, especially the UVC band, then quartz glass is the most common choice. For specific application scenarios, other properties of the material may need to be considered, such as mechanical strength, cost and durability.

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