Disadvantages of other skylight materials
(1) Disadvantages of PC board: poor mechanical strength, poor surface scratch resistance, easy aging and yellowing under UV irradiation, large coefficient of thermal expansion, high installation cost and difficult water leakage prevention treatment.
(2) the disadvantages of Pvc plate: heat resistance is poor, softening point is 80 degrees C, decomposing and discoloring at 130 degrees, and precipitation of HCI is harmful to human body. Plasticizers and antiaging agents in PVC materials are toxic and seriously polluted by the environment.
(3) Disadvantages of glass: poor self-cleaning, easily stained with dust, and need to be cleaned regularly; It is hard, brittle and easily broken. Its self explosion rate is 0.3%, and the crack is sharp and easy to hurt people; High installation cost and slow construction speed; Light pollution is serious, with obvious light spots indoors and reflected glare outdoors; High energy consumption and high thermal conductivity, about 0.7W / (m.k).
Why is a good FRP skylight panel brittle? Will it affect the use of skylight?
1. In addition to selecting high-quality UV resistant film and high-quality resin, the curing degree of good daylighting board is also an important factor. After testing, the curing degree of Yijia daylighting board has reached more than 95%; The internal molecular structure is a nearly uniform network structure, which is very stable, and it is difficult to be greatly affected by external ultraviolet rays, water vapor, acid and alkali substances. Because after the curing degree of daylighting board is improved, its hardness and mechanical strength (tensile strength, bending strength, etc.) will also be improved.
2. As a building material, daylighting board must first have a certain stiffness and bending strength to ensure small deformation under external force. This can avoid the failure of sealant and waterproof treatment due to external force, and effectively prevent water leakage.
3. In order to increase the toughness of many domestic daylighting panels, a plasticizer (i.e. softener) is added to the daylighting panels. This material can make the daylighting board flexible, but it will have a great impact on the strength. Moreover, it precipitates on the surface of the daylighting board after a period of time. It is also a high carcinogen, which has been strictly prohibited abroad, especially in EU countries. Moreover, after adding plasticizer (softener), the aging resistance and service life of daylighting board will be greatly reduced, which is tantamount to drinking poison to quench thirst.
4. As an auxiliary part of steel structure, it is strictly forbidden to step on the daylighting board. During the handling and hoisting of the daylighting board on the roof, according to the correct operation method and the normal bending deformation of the daylighting board, it will not cause damage to the daylighting board. Our company has provided relevant instructions.
To sum up, we can rest assured that the board is flexible and has no impact on normal operation as long as it is stacked normally.