Difference between ultraviolet absorber and light stabilizer and its application
Speaking of professional chemical terms such as ultraviolet absorber and light stabilizer, many people may not know what this is, but if ultraviolet absorber is added to sunscreen, it can protect our skin from being tanned or sunburned by the burning sun, and many people may suddenly realize what the ultraviolet absorber is and what it does. In fact, UV absorbers and light stabilizers (also known as hindered amine light stabilizers in China) are added in large quantities in our daily organic materials, but you just don't know it. The paint and paint on the outside of the family car we drive are usually added, which can protect the color of the car from yellowing, fading and losing light, and has a great effect. We often watch the screens of computers and mobile phones, and some special ultraviolet absorbers are added to the layers of optical films inside, which can block harmful ultraviolet rays to protect our eyes from harm ...
Since ultraviolet absorbers and light stabilizers are widely used and have great effects, what's the difference between them?
Ultraviolet absorber and light stabilizer are both important chemical additives to protect and maintain the properties of organic materials, but there are some differences in their functions. Ultraviolet absorber can convert harmful ultraviolet rays into harmless heat energy through the conversion of its special chemical structure, so as to prevent the high energy of ultraviolet rays from breaking the constituent molecular chains of organic materials, thus losing the due performance of polymer materials; The light stabilizer can be understood as the trapping agent of harmful free radicals. Once some ultraviolet rays break through the protection of ultraviolet absorbers and break the molecular chain of organic materials to form harmful polymer free radicals, the light stabilizer can timely trap harmful free radicals into harmless and stable small molecular structures. People usually add ultraviolet absorber and light stabilizer to organic materials according to a certain proportion, and their protective performance is often better than that of ultraviolet absorber or light stabilizer alone.
Ultraviolet absorber and light stabilizer are two kinds of products collectively, and there are many different types under them, which constitute a large industrial system. The mainstream types of ultraviolet absorbers in the market are benzophenone, benzotriazole, triazine, etc., which are different in their ultraviolet shielding performance and application industry. The types of ultraviolet absorbers produced by Taiwan Province Chemical are mainly benzotriazole and triazine, which are mainly used in coating, optical film and other industries. Light stabilizer is also a general term, and the industry often produces many qualities according to its alkalinity, and there are also differences in appearance between powder and liquid. The main light stabilizers produced by Taiwan Province Chemical are all liquid, which are suitable for use in coatings.
