Shadowless glue (uv glue), also known as photosensitive glue and UV curable glue, is a kind of adhesive that can be cured only by ultraviolet light. It can be used as an adhesive, as well as as as as a paint, paint, ink and other adhesives. UV is the abbreviation of Ultraviolet Rays in English, that is, ultraviolet light. Ultraviolet radiation (UV) is invisible to the naked eye and is a electromagnetic radiation beyond the visible light. Its wavelength ranges from 10 to 400 nm. The curing principle of shadowless adhesive is that the photoinitiator (or photosensitizer) in the UV curing material absorbs ultraviolet light and produces active free radicals or cations, which initiates monomer polymerization and cross-linking chemical reaction, so that the adhesive can be converted from liquid to solid in a few seconds.
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