In long-term use, the aging, discoloration and fading problems encountered by PS mirror sheets are usually closely related to factors such as ultraviolet radiation, temperature and humidity changes, oxidation and chemical corrosion. In order to avoid these problems, the following measures can be taken to improve the durability and stability of PS mirror sheets:

1. Use UV coating

Ultraviolet protection coating is the most effective means to prevent PS mirror sheets from aging and discoloration due to ultraviolet radiation. By applying a special UV coating on the surface of the mirror sheet, the damage of ultraviolet rays to the material can be greatly reduced, and the gloss fading and color changes can be delayed.

UV coating can effectively absorb or reflect ultraviolet rays to protect the mirror effect of the panel from being destroyed. Common UV coatings include transparent resin coatings and optical film coatings. These coatings can not only enhance the surface's UV resistance, but also improve scratch resistance to a certain extent.

2. Select antioxidant materials and anti-aging agents

In the production process of PS mirror sheets, adding antioxidants and anti-aging agents can effectively reduce the aging of materials caused by oxidation reactions. Commonly used antioxidants such as UV absorbers or light stabilizers (such as Hindered Amine Light Stabilizers, HALS) can improve the light resistance and heat resistance of materials.

Anti-aging agents can not only prevent aging caused by UV rays, but also slow down the brittleness and discoloration of materials caused by oxygen and moisture.

3. Add weather-resistant coatings or lamination processes
Weather-resistant coatings or lamination processes can improve the adaptability of PS mirror panels to the external environment and prevent fading, surface damage or brittleness of materials when exposed to wind and sun for a long time. This coating usually uses corrosion-resistant, high-temperature-resistant, and UV-resistant materials, which greatly improves the anti-aging and durability of the mirror panel.

For example, high-performance coatings such as polyurethane coatings and fluororesin coatings are used, which can effectively resist the corrosion of materials by external chemicals, ultraviolet rays, acid rain and other factors.

4. Choose high-quality PS raw materials
High-quality PS (polystyrene) raw materials themselves have better weather resistance and light stability, which can effectively prevent aging problems caused by ultraviolet rays or oxygen and moisture in the air during long-term use. Selecting high-aging-resistant PS resin with high molecular stability can increase the service life of the product.

Adding antioxidants and heat stabilizers to the raw materials can enhance the high temperature resistance and UV resistance of the materials, thereby reducing aging and discoloration.

5. Optimize product design and structure
In order to extend the service life of the PS mirror panel, the product design should consider avoiding direct exposure to strong sunlight or high temperature and high humidity environment. When designing, a certain protective layer or frame can be added to the surface of the mirror panel to make it less susceptible to direct damage from external factors.

Surface texture design (such as concave and convex texture) or the use of shading devices (such as curtains, sunshades, etc.) can effectively avoid surface damage caused by long-term direct sunlight.

6. Avoid contact with chemicals
Chemical corrosion is another important cause of aging and discoloration of PS mirror panels. During use, avoid direct contact between the mirror panel and some strong acids, strong bases, solvents or detergents. These chemicals will accelerate the degradation of PS materials and cause the surface to lose gloss and color.

Mild detergents and soft cloths can be used to clean the surface of the mirror panel. Avoid the use of acidic or alkaline detergents.

7. Regular maintenance and care
Even if all protective measures are taken, regular cleaning and maintenance of PS mirror panels can effectively extend their service life. When cleaning, avoid using steel wool or other rough materials to wipe the mirror surface to avoid scratches or peeling of the surface coating.

A protective film or gloss restorer can be applied regularly. These products can help restore the gloss and provide additional protection for the panel.

8. Ensure correct storage and transportation conditions
When storing and transporting PS mirror panels, ensure that the environment is dry, low temperature and avoid direct sunlight. PS mirror panels should be avoided from long-term exposure to humid or high temperature environments to prevent material expansion, deformation or surface discoloration.

During storage, it is best to place PS mirror panels in a shaded place and avoid panel indentation or surface scratches when stacking.

9. UV stability test
In order to ensure the UV tolerance of PS mirror panels in long-term use, manufacturers can conduct accelerated aging tests (such as QUV tests) to simulate long-term UV exposure environments and evaluate material aging, fading, discoloration and other performance changes, thereby guiding product improvement and optimization.

In order to prevent PS mirror panels from aging, discoloration and fading in long-term use, a series of protective measures must be taken during production and use, including the use of anti-UV coatings, antioxidants, high-quality raw materials, and appropriate design and regular maintenance to reduce the impact of environmental factors on materials. Through these methods, the durability and gloss retention of PS mirror panels can be effectively improved to ensure their long-term stable performance in various environments.