Technical properties of asphalt fiberglass panels This semi-rigid sheet has many unique technical properties.
1. Insulation: It is well known that glass fiber has low thermal conductivity, especially glass fiber with a small diameter. Because of its low bulk density, it can be widely used for insulation, heat insulation and cold insulation in the construction and industrial sectors. Excellent thermal insulation material. The thermal conductivity of glass fiber is small. After the glass fiber is made into asphalt fiberglass board, the irregular pores of the glass fiber in the asphalt glass fiber board prevent the convection of air and weaken the effect of convection in heat conduction. Insulation. Therefore, it is possible to appropriately reduce the diameter of the glass fiber hand-drawn thick wire and reduce the bulk density of the asphalt fiberglass board, thereby improving the heat insulation performance of the board.
2. Sound absorption: Glass fiber materials have excellent sound absorption and sound insulation properties, and their sound absorption coefficient and frequency characteristics are closely related to the bulk density, thickness and diameter of glass fibers. The general rule is that the sound absorption coefficient increases with the increase of the bulk density and thickness of the fiberglass board.
3. Hygroscopicity: The moisture absorption rate and water absorption rate of the asphalt glass fiber board were measured by Shanghai Glass Fiber Structure Research Institute: after being stored in a humidity chamber with a temperature of 50 ° C and a relative humidity of 93% for 24 hours, the moisture absorption rate was not measured. More than 0.5% by weight, at room temperature, the test plate was taken out in water for 24 hours, and after one hour of dripping, the water absorption was measured to be not more than 15% by weight.
4. Other technical performance: (1) Solid vibration isolation performance between two building foundations, using l. . Millimeter thick asphalt fiberglass board isolated. Its isolation amount) 30 decibels. The amount of vibration is fired with a standard striker, followed by a 2209+1616 precision sound level meter. The measured value between two adjacent bases. (2) Compressive strength: under the static load of 0.2 kg / cm 2, the relative compression of the child is 15% .