CN201962813U - Glazed hollow bead mortar polyurethane composite thermal insulation system - Google Patents

Abstract

The utility model relates to a vitrified microbead mortar composite polyurethane thermal insulation system, which effectively solves the problems that the external thermal insulation system of the outer wall is easy to crack, is not resistant to high temperature, and has a short service life. Mesh layer and anti-crack protection layer, the outer surface of the polyurethane composite layer has a fire protection board, the fire protection board is fixedly connected by the galvanized steel wire mesh layer on the outer surface and the anti-crack protection layer, the fire protection board is made of polymer cement A composite body composed of a mortar layer, an alkali-resistant grid cloth layer, and a vitrified microbead mortar layer, and a polymer cement mortar layer is laid on the upper and lower surfaces of the vitrified microbead mortar layer through an alkali-resistant mesh cloth layer. The new type has good thermal insulation effect, crack resistance, strong durability and weather resistance, and convenient construction.

Description

Vitrified bead mortar composite polyurethane insulation system

1. Technical field

The utility model relates to building heat preservation, in particular to a vitrified microbead mortar composite polyurethane heat preservation system.

2. Background technology

The external thermal insulation system of the external wall is to place the thermal insulation system on the outside of the external wall, so that the building can achieve the function of thermal insulation. Since the external thermal insulation system is placed on the outside of the external wall and is directly affected by various factors from nature, higher requirements are put forward for the external thermal insulation system of the external wall. Under the sun, because the insulation layer has a large thermal resistance, the temperature change speed of the external insulation and anti-crack protection layer is 10-30 times faster than that without insulation. Therefore, the flexibility and weather resistance of the anti-crack protective layer play a key role in the crack resistance of the external thermal insulation system.

At present, the polystyrene board thin plastering external thermal insulation system usually adopts the method of pasting to fix the thermal insulation board on the outside of the wall, and then spread 3mm-5mm anti-cracking mortar on the thermal insulation board, and press the reinforcing mesh on the plastering resistance. In cracked mortar, this kind of practice is very common at present, but the problem is that it is prone to cracks. The reason is that the thermal conductivity of the expanded polystyrene board is 0.042W/(m ² .K), while that of the crack-resistant mortar is 0.932W/(m ² .K). The thermal conductivity of the two materials differs by 22 times. Under normal circumstances, the surface temperature of the anti-cracking mortar is as high as 50°C, and the tensile stress in the anti-cracking mortar will cause the cracking of the surface layer of the anti-cracking mortar, which is not resistant to high temperatures and has a short service life, so improvement and innovation are imperative.

3. Contents of the invention

In view of the above situation, in order to overcome the defects of the existing technology, the purpose of this utility model is to provide a vitrified bead mortar composite polyurethane thermal insulation system, which can effectively solve the problems of easy cracking, low temperature resistance and short service life of the external thermal insulation system of the external wall .

The technical scheme solved by the utility model is that it includes a polyurethane composite layer, a galvanized steel wire mesh layer and an anti-crack protective layer. There is a fireproof protection board on the outer surface of the polyurethane composite layer, and the fireproof protection board passes through the galvanized steel wire mesh on the outer surface. The layer and the anti-cracking protective layer are fixedly connected. The fireproof protection board is a composite body composed of a polymer cement mortar layer, an alkali-resistant mesh cloth layer, and a vitrified bead mortar layer. The upper and lower surfaces of the vitrified bead mortar layer A polymer cement mortar layer is laid on the alkali-resistant grid cloth layer.

The utility model has the advantages of good thermal insulation effect, crack resistance, strong durability and weather resistance, and convenient construction.

4. Description of drawings

Fig. 1 is a structural sectional view of the utility model.

Fig. 2 is a cross-sectional view of the fire protection board of the present invention.

5. Specific implementation

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in detail.

Provided by Fig. 1-Fig. 2, the structure of the present utility model is, comprises polyurethane composite layer 2, galvanized steel wire mesh layer 5 and anti-crack protection layer 7, and the outer surface of polyurethane composite layer has fire protection plate, fire protection The board is fixedly connected with the galvanized steel wire mesh layer on the outer surface and the anti-crack protection layer. The fire protection board is composed of a polymer cement mortar layer 3, an alkali-resistant mesh cloth layer 8, and a vitrified bead mortar layer 1. body, the upper and lower surfaces of the vitrified bead mortar layer are laid with a polymer cement mortar layer through an alkali-resistant grid cloth layer.

In order to ensure the use effect, said polyurethane composite layer 2 is a composite layer composed of a mixture made of polyurethane rigid foam, a flame retardant, an antioxidant, and an anti-ultraviolet radiation agent, and an XPS board 4, and each XPS board is 25 The distance between cm-45 cm is uniformly arranged on the outer wall of the mixture successively, and the XPS board is fixed on the inner surface of the fire protection board through the adhesive mortar layer; the width of the said XPS board 4 is 3 cm-5 cm; the said The galvanized steel mesh layer 5 is fixed with expansion bolts 6; the anti-crack protection layer 7 is made of anti-crack mortar; the thickness of the fire protection board is 8-15mm; the polymer cement mortar Layer 3 is made of polymer bonded mortar; said alkali-resistant mesh cloth layer 8 is made of alkali-resistant glass fiber mesh cloth; said vitrified bead mortar layer 1 is made of hollow vitrified microbeads A complex made of beads, slag, river sand, desulfurized gypsum, fly ash, wood sodium water reducer, etc.

The usage of the utility model is that first, the fire protection board is made in the factory, and then an alkali-resistant grid cloth layer and a polymer cement mortar layer are sequentially arranged on the upper surface of the prepared vitrified bead mortar layer, and an alkali-resistant mortar layer is successively arranged on the lower surface Mesh cloth layer and polymer cement mortar layer, after the strength of the fire protection board meets the requirements, stick the XPS board on the fire protection board with adhesive mortar, the width of the XPS board is 3 cm - 5 cm, and the distance between the XPS boards The distance is 25 cm-45 cm; during construction, fix the fire protection board with XPS board on the outside of the wall 9, and the thickness between the fire protection board and the wall depends on the thermal insulation requirements of different regions, generally 2.5 -4 cm, pour a mixture made of polyurethane rigid foam, flame retardant, antioxidant, and anti-ultraviolet radiation agent into the cavity between the fire protection board and the wall 9, and the mixture and the XPS board form a composite thermal insulation layer, and bond the fire protection board to the wall; the outer surface of the fire protection board is provided with a galvanized steel wire mesh layer, expansion bolts are arranged on the galvanized steel wire mesh layer, and an anti-crack protection layer is arranged on the outer surface of the galvanized steel wire mesh layer .

A certain amount of flame retardant, antioxidant and anti-ultraviolet irradiation agent is added to the polyurethane rigid foam described in the utility model to enhance the flame retardancy of the protective layer and prolong the life of the rigid foam; the XPS board not only reduces the consumption, and plays a restraining and supporting role on polyurethane hard foam, which can reduce the shrinkage and deformation of polyurethane; the anti-crack protective layer is formed by anti-crack mortar; the fire protection board is sequentially composed of polymer cement mortar from inside to outside Layer, alkali-resistant mesh cloth layer, vitrified bead mortar layer, alkali-resistant mesh cloth layer, polymer cement mortar layer, the thickness of which is 8-15mm; the polymer cement mortar layer is polymer bonded mortar ; The alkali-resistant mesh cloth layer is alkali-resistant glass fiber mesh cloth; the vitrified microbead mortar layer is hollow vitrified microbeads, slag, river sand, desulfurized gypsum, fly ash, wood sodium water-reducing The hollow vitrified microspheres have excellent waterproof and fireproof properties, but also have breathable properties.

Compared with the prior art, the utility model has the beneficial effects that:

1. The polyurethane composite layer, the fireproof protection board and the anti-crack protection layer of the utility model, the materials in the three layers form a layer-by-layer transition in terms of heat transfer coefficient, and the temperature decreases gradually, so that the thermal stress can be buffered and released. The three materials The mutual coordination of layer deformation can protect the stability of the utility model, thus, the utility model has better thermal insulation performance and crack resistance performance, and thus also has durability and weather resistance performance.

2. The fire protection board of the present invention is composed of materials such as high temperature resistant vitrified microspheres and cement, which not only has a low thermal conductivity, but also has strong fire protection performance, which improves the fire protection performance of the heat preservation system.

3. The utility model regards the external thermal insulation system of the external wall as an organic whole, and the relevant layers of the composition work together, not only requiring a flexible gradient, but also a certain degree of compatibility and synergy to form a composite whole.

4. The structural characteristics and construction method of the utility model make the construction convenient and reduce the cost.

Claims (3)

1. vitrification micropearl morttar composite polyurethane heat insulation system; comprise polyurethane composite bed (2); zinc-coated wire stratum reticulare (5) and cracking resistance topping (7); it is characterized in that; the flameproof protection plate is arranged on the external surface of polyurethane composite bed; zinc-coated wire stratum reticulare and the cracking resistance topping of flameproof protection plate on external surface is fixedly connected; the flameproof protection plate is by polymer cement mortar layer (3); alkaline-resisting grid layer of cloth (8); the complex that vitrification micropearl morttar layer (1) constitutes is on the vitrification micropearl morttar layer; be equipped with the polymer cement mortar layer through alkaline-resisting grid layer of cloth on the soffit.

2. vitrification micropearl morttar composite polyurethane heat insulation system according to claim 1 is characterized in that, is fixed with expansion bolt (6) on the said zinc-coated wire stratum reticulare (5).

3. vitrification micropearl morttar composite polyurethane heat insulation system according to claim 1 is characterized in that the thickness of said flameproof protection plate is 8-15mm.