Thanks to its good light transmittance, SINHAI polycarbonate hollow sheets are widely used in greenhouses, buildings, carports and other ceilings that need lighting. However, many users have found that after a few years, Polycarbonate hollow sheets will become brittle, yellow and aged, the lighting effect will become worse and worse, and the color will not be as bright as before.
If all replacements are a big expense, it is inevitable to feel uncomfortable if you use them reluctantly. So why do polycarbonate hollow sheets turn yellow? How can we avoid this? Let’s take a look.
Reason 1: Product raw materials
The first thing to look at is undoubtedly the root cause. As the saying goes, you get what you pay for. Although the price of polycarbonate hollow sheets with a long service life is relatively high, their quality is definitely better than other cheap products, and they are less likely to turn yellow and age, and have a longer service life.
The difference lies in the raw materials of the products. Cheap products mostly use domestic materials or recycled materials, while good polycarbonate hollow sheets products use imported new materials. The quality gap can be imagined.
Reason 2: Coating process
The reason why polycarbonate hollow sheets have a long life is that manufacturers add a UV layer in a process when producing sun panels. This process can prevent polycarbonate hollow sheets from aging and yellowing, and effectively resist the damage of ultraviolet rays.
However, different adding processes will also affect the life of the sheet. The first is UV coating, which has poor weather resistance and the board has a life of only 2-3 years; the second is UV mixed co-extrusion, which has a relatively poor protection rate and the board has a life of 5-6 years; the last thing to say is UV auxiliary co-extrusion, which is generally used in high-end brand sheets, and the life of the sheet can be extended to 10 years or more.
Reason 3: Installation method
The installation method is a point that many users can easily make mistakes. At present, the polycarbonate hollow sheets on the market are mainly single-sided UV-resistant products, which requires users to face the side with UV coating towards the sun when installing. Otherwise, the polycarbonate hollow sheets will lose the protection of the UV coating and be attacked by ultraviolet rays, causing extremely rapid aging and yellowing, greatly shortening the service life and affecting the light transmittance.
Company Name: Baoding Xinhai Plastic Sheet Co.,ltd
Contact Person: Sale Manager
Email: admin@cnxhpcsheet.com
Phone/Wechat/Whatsapp: +8619932587617
Country: China
Website: https://www.xhplasticsheet.com/
Post time: Jul-31-2024