CN201850662U - Composite type external temperature preservation system of outer wall - Google Patents

Abstract

The utility model discloses a composite external thermal insulation system for external walls, which comprises a base wall, and the periphery of the base wall interface is sequentially provided with an inorganic light aggregate thermal insulation mortar bonding layer, an inorganic fiber cotton thermal insulation board layer, and an inorganic fiber cotton thermal insulation board layer. An anti-crack protective layer and a paint finish layer are also arranged in sequence. The utility model has the advantages of high fireproof grade reaching non-combustible type, weather resistance and ventilation.

Description

Composite external wall insulation system

technical field

The utility model belongs to the thermal insulation structure of building walls, and in particular relates to a composite external thermal insulation system for external walls, which is made of inorganic light aggregate thermal insulation mortar and inorganic fiber cotton thermal insulation boards.

Background technique

With the intensification of the world's energy crisis and the further deterioration of the ecological environment, the contradiction between my country's energy and environmental protection issues has become more prominent due to the continued rapid economic development. The impact of building insulation and energy conservation on the ecological environment has attracted the attention of the industry, requiring building exterior walls to be done For the insulation layer, the amount of insulation materials used will be surprisingly large, which will not only consume a lot of resources, but may also cause new environmental problems. Building thermal insulation and energy saving should be developed in harmony with social and economic sustainable development, comprehensive utilization of resources (recycling), and ecological environment protection. Focus on research on thermal insulation performance and practical value, stability and service life of materials, reliability of process technology, eco-environmental protection and recyclability. We can learn from the successful experience of western developed countries, but we should not follow blindly. To advance, we must combine our national conditions and the actual needs of building insulation, otherwise, what we pay is not only the economic price, but also the environmental protection price.

1. Insulation material

Insulation materials can be divided into three categories: organic, inorganic and composite in terms of application.

1. Organic insulation materials. Such as expanded polystyrene board (EPS), extruded polystyrene board (XPS), spray polyurethane (SPU), and polystyrene particles. Organic thermal insulation materials have the advantages of light weight, good processability, high density, and good thermal insulation effect, but the disadvantages are: not resistant to aging, large deformation coefficient, poor stability, poor safety, easy to burn, poor ecological environmental protection, construction It is difficult, the project cost is high, its resources are limited, and it is difficult to recycle.

2. Inorganic insulation materials. Such as hollow vitrified microbeads, expanded perlite, closed-cell perlite, rock wool, etc. Inorganic thermal insulation materials have a slightly larger bulk density and poor thermal insulation efficiency, but are fire-retardant, small deformation coefficient, anti-aging, stable performance, good combination with wall base and plastering layer, good safety and stability, insulation layer strength and durability Compared with organic thermal insulation materials, it has a long service life, low construction difficulty, low engineering cost, good ecological environmental protection, and can be recycled.

3. Composite materials. Anti-radiation heat-absorbing materials, glass wool, rock wool, and even treated crop straws, waste that can be used for thermal insulation and harmless treatment, and hollow materials produced by technical means such as foaming wait. The thermal insulation effect of composite materials is better, and it has many advantages of inorganic thermal insulation materials: fire retardant, small deformation coefficient, anti-aging, stable performance, good ecological environmental protection, high insulation layer strength, long service life, and small construction difficulty , The project cost is low, the source of its raw materials is extensive, the energy consumption is low, and the eco-environmental protection is good, which can save resources and improve the recycling efficiency of resources.

Other thermal insulation materials such as thermal insulation coatings, anti-radiation coatings, etc. These materials have a certain thermal insulation effect, and some progress has been made in application, but there are limitations in their performance and application. First, the material cost is high, and second, The coating ages quickly and has a limited service life.

4. Materials and process

Organic foam insulation materials such as: expanded polystyrene board (EPS), extruded polystyrene board (XPS), spray polyurethane (SPU), and polystyrene particles, etc., auxiliary materials are polymer bonding mortar, interface treatment agent Or interface mortar, special expansion screws, alkali-resistant glass fiber mesh or galvanized steel wire mesh, crack-resistant plastering mortar, etc. The construction process of plastic sheet insulation materials is generally glued first, then nailed, interface treatment or special treatment agent, pasting netting, and anti-cracking mortar. The construction of foam board insulation engineering is difficult, and the technology is relatively complicated. It has been used in building insulation engineering in my country for about ten years. Environmental protection and other aspects are the most controversial, and it is easy to cause hidden dangers in engineering quality and safety. The main factors are the low strength of the insulation board, poor bearing capacity, and easy deformation.

In recent years, with the deepening of the application of organic external thermal insulation and energy-saving materials for building walls, people have gradually discovered that it still has five major defects:

1. It is easy to fall off and hurt people. The base wall and surface decoration mortar are inorganic materials, which are combined with organic external insulation. Due to their different chemical properties, the combination is not firm, and there have been many cases of falling off and hurting people.

2. Poor resistance to biological destruction. Organic materials are soft and easily damaged by organisms such as termites.

3. There are fire safety hazards, which will support combustion and produce a large amount of toxic gases in case of fire. Organic combustible materials are now banned by the state.

4. The manufacturing process is complicated, and the cost of materials fluctuates with the price of oil, making it difficult to control the cost.

5. It is easy to age and deform, and its lifespan is short and cannot be the same as that of buildings.

Contents of the invention

Aiming at the problems existing in the background technology, the utility model provides an inorganic lightweight aggregate thermal insulation material with high adhesion to the wall, strong wind pressure resistance, high fire resistance level reaching non-combustible type, weather resistance and air permeability, and excellent crack resistance performance. Mortar pasted inorganic fiber cotton insulation board composite external wall external insulation system.

The specific technical scheme of the utility model is as follows: an inorganic sandwich composite external wall thermal insulation system, including a foundation wall, and the periphery of the foundation wall interface is sequentially provided with an inorganic light aggregate thermal insulation mortar bonding layer and an inorganic fiber cotton thermal insulation board layer. An anti-crack protection layer and a coating finish layer are arranged in sequence outside the fiber cotton insulation board layer.

In the composite external wall thermal insulation system of the present invention, the material used for the inorganic fiber cotton thermal insulation board layer is any one of hydrophobic or non-hydrophobic glass wool thermal insulation boards, hydrophobic or non-hydrophobic rock wool thermal insulation boards kind.

The utility model has the following beneficial effects: the utility model adopts the non-combustible inorganic light aggregate thermal insulation mortar and the non-combustible inorganic fiber cotton thermal insulation board to be fully glued, and the method of leaving seams to make the inorganic fiber cotton thermal insulation board is non-combustible. The high-grade inorganic light aggregate thermal insulation mortar is surrounded and bonded with the wall without cavities, endowing the system with strong adhesion to the wall, strong wind pressure resistance, high fire rating, weather resistance and vapor permeability, and excellent crack resistance. With the advantages of wide application range and high cost performance, it can be used in various high-rise building structures, multi-storey building structures and external wall insulation parts of buildings with high fire protection requirements.

Description of drawings

Fig. 1 is a structural schematic diagram of the thermal insulation system of the present invention.

Detailed ways

As shown in Figure 1, an inorganic light aggregate thermal insulation mortar sticking inorganic fiber cotton thermal insulation board sandwich composite external wall thermal insulation system includes base wall 1, inorganic light aggregate thermal insulation mortar bonding layer 2, inorganic fiber cotton thermal insulation Plate layer 3, polymer anti-cracking mortar protective layer 4, alkali-resistant glass fiber mesh cloth 5, polymer anti-cracking mortar protective layer 6, paint or dry-hanging finish layer 7. In the specific implementation process, the inorganic fiber cotton insulation board layer 3 can use any one of several inorganic fiber cotton boards such as hydrophobic (non-hydrophobic) rock wool boards or hydrophobic (non-hydrophobic) glass wool boards.

The construction process of the composite exterior wall external thermal insulation system with inorganic fiber cotton thermal insulation board attached to inorganic light aggregate thermal insulation mortar is as follows: wall base treatment-interface mortar treatment-????—bonding inorganic light aggregate thermal insulation slurry with a thickness of 15mm Paste the material to build the inorganic fiber cotton insulation board (the thickness of the inorganic fiber cotton insulation board is determined according to the design, here it is assumed that the design needs to be 30mm thick)——Wipe the anti-cracking mortar and then wipe the alkali-resistant glass fiber mesh cloth——The first layer of wall Apply anti-cracking mortar twice on the surface - apply polymer emulsion elastic primer - scrape flexible water-resistant putty - paint finish construction.

In the above construction process, inorganic fiber cotton insulation board with inorganic light aggregate thermal insulation mortar is used to level the slurry, the surface of the pasting is grooved or flat, and the interface mortar is painted on both sides, and the 5mm board seam is extruded with masonry meeting ash Scrape off to form a composite insulation layer bonded to the wall without cavities; the anti-crack protective layer is made of anti-crack mortar composite alkali-resistant glass fiber mesh cloth, and the surface is painted with an elastic primer that can effectively prevent liquid water from entering, and a finishing layer Scratch flexible water-resistant putty, the surface layer is made of elastic paint.

Inorganic light aggregate thermal insulation mortar and inorganic fiber cotton thermal insulation board sandwich composite external wall thermal insulation system are suitable for external thermal insulation projects of building external walls in different climate zones. Substrates can be materials such as concrete, hollow blocks, lightweight filled masonry, clay bricks and non-clay bricks.

Claims (2)

1. The composite external wall thermal insulation system, including the foundation wall, is characterized in that: the periphery of the foundation wall interface is provided with an inorganic light aggregate thermal insulation mortar bonding layer and an inorganic fiber cotton thermal insulation board layer in sequence, and the inorganic fiber cotton thermal insulation board layer is sequentially arranged An anti-crack protective layer and a paint finishing layer are also provided. 2. The composite external wall thermal insulation system according to claim 1, characterized in that: the material used for the inorganic fiber cotton thermal insulation board layer is hydrophobic or non-hydrophobic glass wool thermal insulation board, hydrophobic or non-hydrophobic Any of the water-based rock wool insulation boards.

Images