What are the materials used in building energy efficiency and why?
Cover the house insulation materials used: the first: can be described as "sandwich wall" construction of the house, the building wall reserved for the hollow structure. The insulation material caught in the middle of the wall to achieve the effect of thermal insulation. This method of insulation material requirements are not too high, the construction link is more complex, higher cost. If the construction properly insulation effect is also good. Insulation materials can be the same life with the building, generally used for villas and other high-end residential walls. The second: can be summarized as in the building wall is completed, in the interior of the wall to add a layer of insulation structure. This category is generally completed after the completion of the insulation effect is not satisfied with the late replenishment process. Insulation board will be directly attached to cover the wall on the wall to form insulation wall, play the effect of thermal insulation. Need to choose at least to achieve the insulation effect is obvious, fire, non-toxic materials that several basic requirements of the wall insulation board. Insulation effect of insulation wall to achieve what degree of insulation materials Insulation grade can be a simple understanding of the insulation material encountered after the fire state of fire. According to the general classification can be divided into: B. B. B. A level. Although the name is known as fire rating, in fact, only A-class insulation material can really "fire".
They are all flame retardant board. EPS polystyrene sheet: (expanded polystyrene foam board referred to as EPS), EPS allows for use in -30 ℃ ~ +50 ℃ environment, divided into common type (PT) and flame retardant (ZR), density , Room temperature thermal conductivity of 0.039-0.042w / (mk), 20 yuan per kilogram. XPS production is more difficult, generally small factory production of flame retardant board flame retardant zero. Because the flame retardant plate is a high temperature foaming molding, the temperature control is not good Most of the flame retardant is broken down, and then lose the lure of the flame retardant, such as welding in the construction of fire caused by burning accidents, etc. have occurred.
The best effect is polyurethane spray or foam glass
Now a kind of new materials, EPS building energy-saving module wall inside and outside the two layers of insulation, low thermal conductivity, only 0.025w / mk, 0.60w / mk than the national standard requirements, that is, the insulation performance than the national standard requirements 20 Times more than. In the north, northwest with the sea capacity module building, winter without raw stove, only the sun and household appliances generated by the heat, the indoor temperature can reach 15-22 degrees Celsius; summer do not open air conditioning, as long as the adjustment through the curtains, Direct, such as the house, the room Gonggong powder folder grasses mad Wei Fu even within the temperature can be maintained at 27 degrees Celsius, the real winter cool summer.
