Distinction and application of ultraviolet absorbers and light stabilizers

Speaking of ultraviolet absorbent, light stabilizer these professional chemical terms may be many people do not know what this is, but if the sunscreen is added with ultraviolet absorbent, it can protect our skin from the hot sun tan, sunburn, may many people will suddenly see light, understand what UV absorbent product, what role. In fact, UV absorbers and light stabilizers (also known as blocked amine photostabilizers in China) are used in large quantities in our daily use of organic materials products, but you just don't know it. We drive the family car outside the paint, paint will generally be added, it can protect the color of the car unchanged yellow, do not fade, do not lose light, play a great role; We often see the computer, mobile phone screen, the inside of the layers of optical film will also add some special performance of ultraviolet absorbent, it can block harmful ultraviolet rays to protect our eyes to avoid damage.

Since UV absorbers and light stabilizers are so widely used and useful, what is the difference between them?

Uv absorbent and light stabilizer are important chemical auxiliaries to protect and maintain the properties of organic materials, but there are some differences in their functions. Ultraviolet absorbent can put harmful ultraviolet light through the conversion of its special chemical structure, the harmful ultraviolet damage energy into harmless heat energy release, avoid the high energy of ultraviolet light to break the molecular chain 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 absorbent and break the molecular chain of organic materials, forming harmful polymer free radicals, the light stabilizer can timely capture harmful free radicals into harmless stable small molecular structures. Ultraviolet absorbers and light stabilizers are usually added to organic materials in a certain proportion, and their protective properties are often better than ultraviolet absorbers or light stabilizers alone.

Ultraviolet absorbent and light stabilizer are the general name of two kinds of products, under which there are many different types respectively, forming a large industrial system. The common mainstream types of ultraviolet absorbent on the market are benzophenone, benzotriazole, triazine, etc., they are different in the performance of ultraviolet shielding and the application industry; The ultraviolet absorbers produced by Taiwan Yongphotochemical are mainly benzotriazole and triazine, which are mainly used in coating, optical film and other industries. Light stabilizer is also a general term. The industry often produces many qualities according to the different degree of alkalinity, and there are different differences in the appearance of powder and liquid. Taiwan Yongguang Chemical production of the main light stabilizer are liquid, more suitable for use in coatings.