Factors affecting of ultraviolet curing
The optical characteristics of UV light source on the photochemical reaction degree of photoinitiator has an important impact.
The Ultraviolet Curing Process
First, we need to understand the components of the curing material and the ultraviolet curing process.
What is ultraviolet curing?
Ultraviolet curing is the most common and mature industrial application of UV.But also occupies the largest market size.Currently it mainly uses in curing UV wavelength of UVA.Curing refers to the process of material from low molecules to polymers.Ultraviolet curing refers to the UV light irradiation.To make the curing material in a short time of photochemical reaction.As well as making the adhesive from liquid to solid in a few seconds. In the curing field, accounting for a large proportion of industrial curing applications.Such as building materials coating, coating of electronic products and other curing.These curing equipment are large, for the consumer [...]
Why UV Flashlight is Purple Light?
The UVA uv spectrum is mainly between 360nm-400nm at present.
What is UVC?
UVC (280nm-200nm): short wavelength with the weakest penetrating power.
What is UVB?
UVB (315nm-280nm): Medium wavelength with medium penetration, its shorter wavelength part will be absorbed by transparent glass.
What is UVA?
UVA (400nm-315nm): UVA has the longest wavelength and strongest penetrating ability.
The wavelength of ultraviolet rays
Since the ultraviolet rays radiation with a wavelength less than 200 nanometers will be strongly absorbed by the air, we basically only study ultraviolet rays with wavelengths above 200nm in our applications.
Ultraviolet radiation
The current national standard in China is according to Article 845-01-05 of GB/T2900.65-004 "Electrical Terminology Illumination".
What is the ultraviolet wavelengths?
Due to the wide range of ultraviolet wavelengths from 10nm to 400nm.It is necessary to perform a more detailed classification.As base on ultraviolet wavelengths's optical characteristics to facilitate industrial applications.At present, the international society and the domestic vertical industries have different classifications.But we have made a more authoritative specification based on the standards of the lighting industry. According to the classification of ISO-DIS-21348, ultraviolet wavelengths are divided into the following 10 categories: Name?Short?Wavelength?EnergyLong wave ultraviolet light, ultraviolet light A, or black lightUVA400–315nm3.10–3.94eV?Short UltravioletNUV400–300nm3.10–4.13eVMedium wave ultraviolet light, ultraviolet light BUVB315–280nm3.94–4.43eVMid-ultravioletMUV300–200nm4.13–6.20eVShortwave ultraviolet light, ultraviolet light C, germicidal ultraviolet radiationUVC280–100nm4.43–12.4eVLong ultravioletFUV200–122nm6.20–10.2eVVacuum UVVUV200–100nm6.20–12.4eVLow-energy ultravioletLUV100–88nm12.4–14.1eVHigh-energy [...]
Ultraviolet energy
We know that the shorter the wavelength of the ultraviolet photon, the greater the ultraviolet energy.