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Ultraviolet (UV) absorbers are compounds specifically designed to protect materials from the harmful effects of UV radiation. Common types of UV absorbers include benzophenones, benzotriazoles, triazines, and salicylates. These compounds differ in their absorption spectra, UV protection efficiency, compatibility with different polymers, and resistance to environmental factors such as heat, humidity, and chemical exposure.
UV absorbers act through a mechanism of electronic excitation and energy dissipation. When exposed to UV radiation, UV absorbers absorb photons within the UV wavelength range, causing electronic transitions within the molecule. This absorption process causes the electrons to rise to a higher energy level and then relaxation back to the ground state, releasing energy in the form of heat. By absorbing UV radiation and dissipating it as heat, UV absorbers effectively protect materials from UV-induced degradation.
UV absorbers should have the following characteristics:
We have developed a range of UV absorbers to meet the requirements of a variety of markets and applications. Please contact us today if you have a requirement.
