What are the external wall insulation materials? Exterior wall insulation materials selection skills
There are many kinds of materials for construction now. The exterior wall insulation material is only one of them. It is generally used in the cold north and can provide insulation for the interior. There are many types of insulation materials. There are still many people who know very little about such common construction materials. So what are the external wall insulation materials ? Today, Xiaobian will take a look at the exterior insulation materials and purchase techniques!
What are the external wall insulation materials?
1. Organic insulation materials: such as straw, rice husk, sugar cane fiber, softwood kapok, wood chips, shavings, wood fiber and their products.
Advantages: These materials have small bulk density, wide source, and most of them are inexpensive, but have high hygroscopicity, are perishable after damp, and are easily decomposed or burnt at high temperatures.
2. Inorganic thermal insulation materials: mineral mineral wool, expanded perlite, expanded vermiculite, diatomaceous earth gypsum, slag, glass fiber, rock wool, aerated concrete, foam concrete, pumice concrete and other products, chemical synthesis The fats and synthetic rubbers include polystyrene, polyvinyl chloride, polyurethane, polyethylene, urea-formaldehyde and foamed hard acid esters and the like.
Advantages: This kind of material does not rot, has good high temperature resistance, is partially hygroscopic, is easy to burn, and is more expensive.
3, metal insulation materials: mainly aluminum and its products, such as aluminum, aluminum foil, aluminum foil composite light board. It uses the radiation characteristics of the surface of the material to achieve thermal insulation performance.
Advantages and Disadvantages: Materials with this type of surface properties hardly absorb the heat incident on it, and the ability to radiate heat outward is also small. Such materials are less expensive and more expensive.
4, loose insulation materials: such as slag, water slag, expanded vermiculite, mineral wool, rock wool, expanded perlite, wood chips and rice husk, etc., it should not be used for vibration and envelope structure.
5, the overall thermal insulation material: generally use loose insulation materials for the aggregate, pouring or spraying surface, such as vermiculite concrete, expanded perlite concrete, fly ash ceramsite concrete, clay ceramsite concrete, pumice concrete , slag concrete, etc., such materials still have some properties of the original loose materials, good integrity and convenient construction.
How to choose external wall insulation materials:
1) Refer to the thermal conductivity and heat storage coefficient of this material when selecting exterior insulation materials. The thermal insulation material has a low thermal conductivity and relatively good thermal insulation. Others also need to look at the specific environmental temperature changes that the insulation data should work to ensure that the data is well insulated.
2) When purchasing, be sure to see if it is light in weight and loose enough. Such insulation data can also increase the heat transfer function of the device in addition to the component that can be received by the small support bracket.
3) The insulation material should have the function of resisting water and anti-air drum. The thermal insulation material has poor water resistance, which is easy to damage the thermal insulation data, and the thermal insulation effect is deteriorated. In the event of an open drum crack, a later protection is required, and a protection fee is paid for this demand.
4) Fire protection function of insulation materials. The document indicates that the fire protection function of the external wall insulation data should be Class A non-combustible. The fire accidents caused by the fireproof function of the insulation data are not up to standard.
5) Construction technology of insulation materials. YT inorganic active insulation data construction does not require mesh cloth and crack-resistant mortar. It is relatively simple to construct other insulation materials, saving labor and labor.
The performance of exterior insulation materials is excellent, but care should be taken to use them reasonably. When purchasing exterior wall insulation materials, we must pay attention to scientific and correct purchase methods. The above is what the exterior wall insulation materials introduced for you today and the purchase skills are here. End here, want to know more For related information, please continue to pay attention to the decoration home.
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