After a 14-month professional test, the PC Hollow Sheet developed has acquired an official 10,000-hour anti-aging test report issued by a third-party authoritative institution. All test indicators of the sheet exceed the standard values set by the industry. Detailed information about the test sample and core testing data is listed in the table below.
| Test Category | Specific Information |
|---|---|
| Sample Thickness | 6 mm |
| Internal Structure | Double-layer hollow structure |
| Sample Color | Transparent |
| Authorized Third-Party Tester | Sinopec (Beijing) Chemical Research Institute |
| Industry Standard for Yellow Index (2000-hour test) | ≤ 3 |
| Actual Yellow Index of PC Hollow Sheet (2000-hour test) | 2.5 |
| Light Transmittance after 10,000-hour aging test | 70% |
| Full Test Cycle | 1 year and 2 months |
The whole aging experiment was carried out in a xenon lamp accelerated weathering tester. In the industry, there is a widely cited reference conversion ratio: 500 hours of laboratory accelerated aging test equals one year of natural outdoor exposure. However, this figure is only for reference. There is no unified and internationally recognized fixed conversion formula between accelerated testing time and real outdoor service time. The annual solar radiation, temperature and humidity conditions differ greatly among regions, and even change every year in the same place, so a universal conversion standard cannot be formulated.
Features and Applications of Double-Layer PC Hollow Sheet
Double-layer PC Hollow Sheet, also known as double-wall polycarbonate hollow panel, takes pure polycarbonate as raw material. A 50-micron UV protective coating is attached to its surface, which can effectively slow down the aging process and prolong its service life under outdoor environments. This product is extensively used in agricultural greenhouses, carports, outdoor sunshade canopies and daylighting walkways.
