The Functions, Types, and Applications of Light Stabilizers

Substances added to shield or inhibit photo-oxidation-reduction or photo-aging processes are called light stabilizers. Products such as coatings, plastics, rubber, and synthetic fibers, under sunlight or strong fluorescent light (which contains more harmful UV than ordinary fluorescent lamps), undergo self-oxidation triggered by UV absorption, leading to polymer degradation and deterioration of the product's appearance and physical-mechanical properties; this process is called photo-oxidation-reduction or photo-aging. Ultraviolet rays can also penetrate the superficial layer of human skin and damage skin cells.

With the continuous development of science and technology, light stabilizers have become indispensable additives in many industries. As a well-known domestic additive manufacturer, Beijing Tiangang has an in-depth understanding and unique insights into the application of light stabilizers. This article will detail the functions of light stabilizers,
their types, application fields, and future development trends, and show you Beijing Tiangang's leading position in the light stabilizer field.

I. The Functions of Light Stabilizers

A light stabilizer is a chemical substance that can inhibit or slow the aging of materials under light exposure. By absorbing, transferring, and eliminating ultraviolet rays, suppressing free-radical generation, and slowing polymerization reaction rates, it effectively improves the weather resistance and anti-aging performance of materials.

II. Types of Light Stabilizers

Light stabilizers can be divided into five categories by mechanism of action: UV absorbers, light screens, quenchers, antioxidants, and hindered-amine light stabilizers. Different types of light stabilizers have different characteristics and application fields.

1. UV Absorbers: Their main function is to absorb ultraviolet rays and reduce the light energy inside the material, thereby slowing the photochemical reaction rate.

2. Light Screens: By reflecting and scattering ultraviolet rays, they reduce the direct light exposure of materials, thereby achieving an anti-aging effect.

3. Quenchers: They can rapidly return excited-state molecules to the ground state, preventing them from converting into active free radicals and reducing the material's oxidation rate.

4. Antioxidants: By scavenging free radicals or inhibiting oxidation reactions, they improve the antioxidant properties of materials.

5. Hindered-Amine Light Stabilizers: By inhibiting polymer chain scission and cross-linking reactions, they improve the weather resistance of materials.

III. Application Fields of Light Stabilizers

Light stabilizers are widely used in plastics, coatings, rubber, fibers, and other fields. As people's requirements for product quality and performance increase, the application scope of light stabilizers continues to broaden.

1. Plastics: Plastic products are prone to aging under light exposure, such as discoloration and cracking. Adding light stabilizers can effectively improve the weather resistance of plastics and extend their service life.

2. Coatings: When used outdoors, coatings are subject to long-term UV exposure and prone to fading and chalking. Adding light stabilizers can enhance the weather resistance of coatings and improve their decorative effect and service life.

3. Rubber: Rubber products are prone to aging under sunlight, leading to performance degradation. Adding light stabilizers can improve the weather resistance of rubber and extend its service life.

4. Fibers: When used outdoors, fibers are subject to UV exposure and prone to strength loss and discoloration. Adding light stabilizers can enhance the weather resistance of fibers and improve their service life and quality.

IV. Future Development Trends

With growing environmental awareness and continuously increasing product performance requirements, the development trend of light stabilizers will move toward environmental friendliness, high efficiency, and multi-functionality. As a leading enterprise in China's additive industry, Beijing Tiangang

will continue to devote itself to the R&D and production of more environmentally friendly and more efficient light stabilizer products, contributing to the development of China's additive industry.

V. Summary

As one of the important additives, light stabilizers are widely used in many industries. As a well-known domestic additive manufacturer, Beijing Tiangang has in-depth research and unique insights into the production and application of light stabilizers.

This article detailed the functions, types, application fields, and future development trends of light stabilizers, hoping to help readers better understand the field of light stabilizers.