Asbestos board is the abbreviation of asbestos fiber cement plate. It is made of asbestos, glass fiber, ceramics and other materials according to scientific formula. It has strong tension resistance and can withstand pressure. It can withstand about 1400 ~C. It can be used for insulation, sound insulation, boiler, iron and steel plant, chemical plant, aluminium casting plant and general electrical insulation.
Asbestos board is divided into asbestos insulation board, asbestos rubber board and asbestos cement board.
Asbestos insulation board, also known as asbestos whiteboard, is made of asbestos as the main material, mixed with the corresponding bonding filling materials, which is suitable for insulation, heat preservation, sound insulation and general electrical insulation.
The technical indexes of asbestos insulation board are as follows: (1) the loss of burning is not more than 18%, and the moisture content is not more than 5%.
(2) 1 mm thick asbestos board should not exceed 1.3 Kg in weight.
(3) The tensile strength of asbestos board under 6 mm is not less than 1.4 kg/c_.
(4) The thermal conductivity is 0.13-0.15 kcal/m/h/degree when the service temperature is not more than 1000 C.
(5) The allowable tolerance of length and width is (+1 mm) and the allowable thickness is 12%.
Packing and storage requirements for asbestos insulation board: asbestos insulation board is packed in wooden crates and wrapped with plastic cloth. The net weight of each box is 100 kg. It can not be thrown during loading and unloading. It should be kept in a flat, clean and dry room. Rain and moisture are strictly prohibited.
The asbestos insulation board is mainly used in steel and aluminium factories for heat insulation, boiler insulation and heat preservation.
The structure and use of asbestos board products:
(1) Asbestos board is made of asbestos and bonding materials. Suitable for insulation, insulation, sound insulation and electrical insulation.
(2) Implementing Standard 11-59 for Products
(3) Technical and physical properties of products.
There are differences between asbestos board and mineral asbestos board: asbestos board is made of asbestos and adhesives. Suitable for insulation, insulation, sound insulation and electrical insulation. Mineral wool board is made of slag wool as the main raw material, adding appropriate additives, through ingredients, forming, drying, cutting, surface finishing and spraying of mineral wool board. It does not contain asbestos, formaldehyde, heat preservation, sound insulation, moisture proof, heat insulation and good sound absorption function. Both materials can be used for decoration.
This reminds you that in building, asbestos boards and asbestos rubber boards are preferable to be used as fillers, and the product requires that the fire-proof grade should be above A-class flame-retardant grade, while in use, all fire sources should be prohibited from approaching; fire-proof insulation layer should be installed in the kitchen outside, and cable and other circuit equipment should not be allowed to pass through the board; and in all possible occurrences; Stabilize hidden dangers to prevent fire extinguishers and alarms.
How to choose and buy asbestos board, we should pay attention to the following items:
First, we should avoid the misunderstanding of color. A feeling that the color is too bright will make consumers think that good workmanship is definitely a regular product. The asbestos board manufacturer reminds you not to patronize the color when choosing and purchasing, but also to check the quality to meet the standard, whether the effect of the compound use rules. In case some illegal vendors drill Confucius, because the color is very easy to fake, but consumers should not be mistaken that all bright products are fake.
2. Make clear the use and relevant parameters of asbestos board, and ask for specific parameters when choosing and purchasing, and popularize your knowledge so as not to confuse the sellers.
Third, the analogy method makes the quality of other asbestos board more intuitive. Closer to the steel plate thickness and toughness is a good material, soft is produced with inferior materials, bending several times will fracture.
Fourth, don't believe one-sided words, try to experience the product in person as good as said.
Careful friends may see asbestos board in some industries such as boilers and chemical plants, mainly because it can withstand very high temperature, so it is a good fire-proof material, but also can be used as external wall insulation material. As long as you master the correct use method, you can ensure that this material can play a better thermal insulation and flame retardant effect than other building materials.