First, the performance of glass fiber board
1. Thermal insulation: As we all know, glass fiber has low thermal conductivity, especially glass fiber with small diameter, which can be widely used for thermal insulation, thermal insulation and cold preservation in construction and industrial sectors because of its low bulk density. It is an excellent thermal insulation material. The thermal conductivity of glass fiber is very small. After the waste glass fiber is made into asphalt glass fiber board, the glass fiber in the asphalt glass fiber board has irregular pores, which prevents air convection and weakens the role of convection in heat conduction, and has good heat insulation effect. Therefore, the thermal insulation performance of asphalt glass fiber board can be improved by properly reducing the diameter of glass fiber hand-drawn thick wire and reducing the packing density of asphalt glass fiber board.
2. Sound absorption: Glass fiber material has excellent sound absorption and sound insulation performance, and its sound absorption coefficient and frequency characteristics are closely related to the volume density, thickness and diameter of glass fiber. The general rule is that the sound absorption coefficient increases with the increase of the bulk density and thickness of fiberboard.
3. Moisture absorption: The moisture absorption rate and water absorption rate of asphalt glass fiber board are measured by Shanghai Glass Steel Structure Research Institute: after being stored in a humidity box with a temperature of 50℃ and a relative humidity of 93% for 24 hours, the moisture absorption rate is not more than 0.5% (weight percentage). At room temperature, the test board was soaked in water for 24 hours and then taken out. After dripping 1 hour, the water absorption rate was not more than 65438+.
4. Other technical performance: (1) The solid vibration isolation performance between the two building foundations is separated by asphalt glass fiber board with a thickness of L.mm.. Its isolation capacity is 30 decibels. The vibration quantity is struck with a standard hammer, and then with a precision sound level meter 2209+ 16 16. The measured value between two adjacent foundations. (2) Compressive strength: under the static load of 0.2kg/cm2, its relative compressive strength is 15%.
Second, the raw materials of glass fiber materials
1, random polypropylene glass fiber sheet is a semi-rigid sheet, which is made of hand-drawn coarse glass fiber produced in petrochemical plant as the main raw material and random polypropylene as the binder through a special process. In addition to all the characteristics of asphalt glass fiber board, this board has a low thermal conductivity of 20%, and because this board does not need petroleum asphalt, it uses the leftovers from petrochemical plants, so it can greatly reduce the product cost, and it is a kind of "double-material" comprehensive utilization product.
2. Compared with asphalt glass fiber board, this specification of polypropylene glass fiber board is slightly less rigid, but it does not affect its performance. In order to keep the size stable during transportation and storage, it can be solved by painting a 5 mm thick cement mortar protective layer on the surface of the plate. This can not only increase the stiffness of the plate, but also facilitate the bonding with the structural wall [2].
The above is the performance introduction of glass fiber board and the raw material content of fiberboard introduced by Bian Xiao. Through today's article, we have a more comprehensive understanding of glass fiber board, and glass fiber board is widely used. I hope everyone can make good use of this decoration material.