Technical performance of asphalt glass fiber board This semi-rigid board has many unique technical properties.
1. Thermal insulation: As we all know, glass fiber has low thermal conductivity, especially glass fiber with a thinner diameter. Because of its low bulk density, it can be widely used for heat preservation, heat insulation and cold insulation in construction and industrial sectors. Excellent thermal insulation material. The thermal conductivity of glass fiber is small. After the glass fiber is hand-drawn into the asphalt glass fiber board, it causes irregular pores of the glass fiber in the asphalt glass fiber board, which prevents air convection and weakens the role of convection in heat conduction. The insulation effect. Therefore, appropriately reducing the diameter of the glass fiber hand-drawn thick wire and reducing the bulk density of the asphalt glass fiber board can improve the insulation performance of the board.
2. Sound absorption: The glass fiber material has excellent sound absorption and sound insulation properties. Its sound absorption coefficient and frequency characteristics are closely related to the bulk density, thickness and diameter of the glass fiber. The general rule is: the sound absorption coefficient increases with the increase in the bulk density and thickness of the glass fiber board.
3. Hygroscopicity: The moisture absorption rate and water absorption rate of the asphalt glass fiber board are measured by the Shanghai FRP Structure Research Institute: After being stored in a humidity box at a temperature of 50 ℃ and a relative humidity of 93% for 24 hours, the moisture absorption rate is not measured. More than 0.5% (weight percentage), at room temperature, put the test plate in water for 24 hours to take out, after one hour of dripping, the measured water absorption rate is not more than 15% (weight percentage).
4. Other technical performance: (1) Solid vibration isolation performance between two building foundations, use l. Millimeter-thick asphalt fiberglass board isolation. The isolation amount) 30 decibels. The amount of vibration is fired with a standard percussion device, and then a 2209+1616 precision sound level meter. The measured value between two adjacent foundations. (2) Compressive strength: under a static load of 0.2 kg/cm2, its relative compression is 15%