Performance comparison between Runfeng FRP daylighting board and PC daylighting board
| Lighting board technology indicator | FRP lighting board | PC lighting board |
| Raw materials | IPA resin+E fiber glass | Polycarbonate PC |
| Cofficient of thennal epansion | 2. 1x10-5/m/m/℃ The relative displacement caused by the change of cold and heat is small. | 6.75x 10-5/m/m/°C The relative displacement caused by the change of cold and heat is relatively large, which will cause the periphery of the screw hole to tear, deform and cause water leakage. Therefore, the length of the PC board should not be too long, and it can only be applied to small-span roofs. |
| Tensile strength | High tensile strength, able to withstand high loads, strong typhoon resistance. | Lower tensile strength, poor load bearing capacity, and poor typhoon resistance. |
| Surface hardness | Combining organic and inorganic composite materials, it has high surface hardness and tear resistance. | The particularity and singleness of its molecular structure make the surface hardness and tear resistance of the PC board poor, and it is easy to be scratched and pierced by metal burrs and leak water. |
| Themal conductivity | 0. 158w/ (m. k), heat insulation slightly better than PC | 0. 166w/ (m. k) |
| Construction costs | Due to the high tensile strength, high rigidity and strong load bearing capacity of the plate, it can be used with the steel plate on the roof of the steel structure with a large span and a large purlin distance. | The rigidity of the board is poor, and the coefficient of thermal expansion and contraction is large, so it is necessary to use small grids and small purlins or convex arches to increase the strength. When used in large purlins, it is easy to sink water and leak. |
| Surface maintenance | Low maintenance cost, long cycle, easy to clean, just wash with clean water or rainwater, keep bright and clean for a long time. | Electrostatic adsorption will firmly adsorb dust on the surface, affecting light transmittance, poor acid and alkali resistance, difficult to clean, and difficult to maintain. |