CN208088542U - A kind of exterior wall CPC rock wool heat-preservation composite plates - Google Patents

Abstract

The utility model provides a CPC rock wool thermal insulation composite board for an outer wall. The CPC rock wool thermal insulation composite board for an outer wall includes a first cement-based glass fiber composite layer, a rock wool fireproof layer and a second cement-based glass fiber composite layer. A first flexible water-blocking layer is arranged between the second cement-based glass fiber composite layer and the rock wool fireproof layer. The utility model has the advantages of good fire prevention and water absorption performance, small gaps between boards after installation, and good heat preservation effect. under construction.

Description

A kind of external wall CPC rock wool thermal insulation composite board

technical field

The utility model relates to a composite board for external walls, in particular to a CPC rock wool thermal insulation composite board for external walls.

Background technique

The use of traditional rock wool boards in the field of exterior walls. Traditional rock wool composite boards are not easy to bond and the flatness is difficult to control during the construction of exterior walls. Moreover, the density of rock wool is 100-140kg/m ³ and the weight is relatively heavy. The standard requirement of energy saving of 75% requires 100mm to meet the requirement. The tensile strength is very low and the pull-out strength of the wall is lower than 0.08Mpa. The difficulty of construction increases. At the same time, the weight of the external wall building is also dangerous. There is a possibility of rock wool absorbing water. Once it absorbs water, the overall weight will increase. Partial freezing and thawing will occur, and the phenomenon of shedding and cracking will also occur, which is even more dangerous to high-rise buildings.

Utility model content

The technical problem to be solved by the utility model is that the existing thermal insulation composite panels for external walls not only have poor thermal insulation effect, but also are easy to absorb water, and will freeze and thaw locally and fall off and crack, endangering the safety of pedestrians around the building.

In order to solve the above technical problems, the utility model provides an external wall CPC rock wool thermal insulation composite board, the external wall CPC rock wool thermal insulation composite board includes a first cement-based glass fiber composite layer, a rock wool fireproof layer and a second cement-based A glass fiber composite layer, a first flexible water-blocking layer is arranged between the second cement-based glass fiber composite layer and the rock wool fireproof layer.

Preferably, a second flexible water-blocking layer is provided between the first cement-based glass fiber composite layer and the rock wool fireproof layer.

Preferably, the thickness of the first cement-based fiberglass composite layer is 0.1 mm to 0.5 mm, the thickness of the rock wool fireproof layer is 2.0 mm to 500 mm, and the thickness of the second cement-based fiberglass composite layer is 0.1 mm. mm to 0.5 mm, the thickness of the first flexible water blocking layer is 0.1 mm to 1.0 mm, and the thickness of the second flexible water blocking layer is 0.1 mm to 2.5 mm.

Preferably, the first flexible water blocking layer and the second flexible water blocking layer are made of hard graphite polyurethane material, so as to reduce the water absorption rate to 1%.

Preferably, the rock wool fireproof layer is made of basalt hydrophobic rock wool, and the water repellency rate reaches 98%.

The beneficial effects of the above-mentioned technical solution of the utility model are as follows:

The utility model solves the problem of water absorption of the existing rock wool composite boards for external walls, the problems of large gaps between the boards after traditional installation and poor heat preservation effect, and gaps between rock wool arrangements during the production of composite boards are not tight enough and there are gaps. Adding a layer of hard graphite polyurethane on the surface of rock wool limitedly solves the problem of rock wool gaps and improves airtightness and water resistance; on the one hand, the composite layer and rock wool layer are firmly bonded by using the characteristics of polyurethane foam At the same time, the integrity is firm and the airtightness is strict. At the same time, because the rigid graphite polyurethane has a closed-cell structure and does not absorb water, the thermal conductivity is 0.022w/(m.k), which is twice the effect of rock wool insulation, and the external wall insulation structure is reduced. The use of weight reduces the water absorption rate to 1%, which ensures the safety of the outer protection; on the other hand, it increases the thermal insulation performance, reduces the thickness of the rock wool, and reduces the overall weight, making it more widely used, safer and more durable.

Description of drawings

Fig. 1 is the structural representation of a kind of external wall CPC rock wool thermal insulation composite board of the present utility model;

Fig. 2 is another structural schematic diagram of a CPC rock wool thermal insulation composite board for an exterior wall of the present invention.

[Description of main component symbols]

1. The first cement-based glass fiber composite layer;

2. Rock wool fireproof layer;

3. The second cement-based glass fiber composite layer;

4. The first flexible water blocking layer;

5. The second flexible water blocking layer.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, the following will describe in detail with reference to the drawings and specific embodiments.

The technical problem to be solved by the utility model is that the existing thermal insulation composite panels for external walls not only have poor thermal insulation effect, but also are easy to absorb water, and will freeze and thaw locally and fall off and crack, endangering the safety of pedestrians around the building.

In order to solve the above technical problems, as shown in Figure 1, the utility model provides a CPC rock wool thermal insulation composite board for an exterior wall. The CPC rock wool thermal insulation composite board for an external wall includes a first cement-based glass fiber composite layer 1, rock wool The fireproof layer 2 and the second cement-based glass fiber composite layer 3 , and a first flexible water-blocking layer 4 is arranged between the second cement-based glass fiber composite layer 3 and the rock wool fireproof layer 2 .

In particular, as shown in FIG. 2 , a second flexible water-blocking layer 5 may also be provided between the first cement-based glass fiber composite layer 1 and the rock wool fireproof layer 2 .

In particular, the thickness of the first cement-based fiberglass composite layer 1 is 0.1 mm to 0.5 mm, the thickness of the rock wool fireproof layer 2 is 2.0 mm to 500 mm, and the thickness of the second cement-based fiberglass composite layer 3 is 0.1 mm to 0.5 mm. mm, the thickness of the first flexible water blocking layer 4 is 0.1 mm to 1.0 mm, and the thickness of the second flexible water blocking layer 5 is 0.1 mm to 2.5 mm.

In particular, both the first flexible water blocking layer 4 and the second flexible water blocking layer 5 are made of hard graphite polyurethane material, so as to reduce the water absorption rate to 1%.

In particular, the rock wool fireproof layer 2 is made of basalt hydrophobic rock wool with a water repellency rate of 98%.

The description of the composite material is as follows:

Hard graphite polyurethane material: Graphite is a crystalline mineral of carbonaceous elements, and its crystal lattice is a hexagonal layered structure. The melting point of graphite is 3850±50°C, and the boiling point is 4250°C. Even if it is burned by an ultra-high temperature arc, the weight loss is very small, and the thermal expansion coefficient is also very small. The strength of graphite increases with the increase of temperature, and at 2000°C, the strength of graphite doubles.

Polyurethane rigid foam: Polyurethane is a two-component raw material, the density can reach 35-65kg/m ³ , the closed cell rate is about 1%, and the thermal conductivity of thermal insulation is 0.018-0.024, which is the lowest thermal conductivity among thermal insulation materials.

Graphite and polyurethane are mixed together and used in a certain ratio. The advantage of graphite polyurethane is that it has a higher level of flame retardancy. After adding graphite to polyurethane, the high temperature resistance can reach 300°, and the thermal conductivity can be lowered to 0.021w/(m·k). Stable, dense foam structure. Graphite polyurethane is a good material with improved high temperature resistance and low thermal conductivity.

To sum up, the utility model solves the problem of water absorption of the existing rock wool composite panels for external walls. After traditional installation, the gaps between the panels are large and the thermal insulation effect is poor. gap. Adding a layer of hard graphite polyurethane on the surface of rock wool limitedly solves the problem of rock wool gaps and improves airtightness and water resistance; on the one hand, the composite layer and rock wool layer are firmly bonded by using the characteristics of polyurethane foam At the same time, the integrity is firm and the airtightness is rigorous. At the same time, because the rigid graphite polyurethane is a closed-cell structure that does not absorb water, the thermal conductivity is 0.022w/(m·k), which is twice the effect of rock wool insulation, and the external wall insulation structure is reduced. Reduce the use weight, reduce the water absorption rate to 1%, and ensure the safety of the outer protection; on the other hand, increase the thermal insulation performance, reduce the use thickness of rock wool, reduce the overall weight, and use wider, safer and more durable .

Therefore, the utility model has the advantages of good fire prevention and water absorption performance, small gaps between boards after installation, and good heat preservation effect. in the required building.

The above is a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. And retouching should also be regarded as the protection scope of the present utility model.

Claims (5)

1. A kind of external wall CPC rock wool thermal insulation composite board, said external wall CPC rock wool thermal insulation composite board comprises the first cement-based glass fiber composite layer, rock wool fireproof layer and the second cement-based glass fiber composite layer, characterized in that , A first flexible water-blocking layer is arranged between the second cement-based glass fiber composite layer and the rock wool fireproof layer. 2. The external wall CPC rock wool thermal insulation composite board according to claim 1, wherein a second flexible water-blocking layer is arranged between the first cement-based glass fiber composite layer and the rock wool fireproof layer. 3. The external wall CPC rock wool thermal insulation composite board according to claim 2, characterized in that, the thickness of the first cement-based glass fiber composite layer is 0.1 mm to 0.5 mm, and the thickness of the rock wool fireproof layer is 2.0 mm to 500 mm, the thickness of the second cement-based glass fiber composite layer is 0.1 mm to 0.5 mm, the thickness of the first flexible water blocking layer is 0.1 mm to 1.0 mm, and the thickness of the second flexible water blocking layer The thickness is 0.1 mm to 2.5 mm. 4. The external wall CPC rock wool thermal insulation composite board according to claim 2, wherein the materials of the first flexible water-blocking layer and the second flexible water-blocking layer are hard graphite polyurethane materials, with Reduce water absorption to 1%. 5. The external wall CPC rock wool thermal insulation composite board according to claim 1, wherein the rock wool fireproof layer is made of basalt hydrophobic rock wool, and the water repellency reaches 98%.