CN202299239U - Thermal-insulation decorative composite board for buildings - Google Patents

Abstract

The utility model discloses a heat-preserving and decorative composite board for building, which uses hard polyurethane foam as a sandwich material, and is covered with stone decorative surface materials or silicon-calcium boards and cement fiber boards or magnesium oxide cement fiber boards on both sides, and the decorative surface materials are produced on a professional production line. After high-temperature drying, it enters a 300-ton large-scale laminator with temperature control, directly foams and matures, hot-presses, and demoulds. The back of the natural stone is equipped with back bolts or inlaid nuts, and there are custom-made stainless steel embedded parts. , After hot-press forming and foaming, it has the effect of double-layer reinforcement. The unique adhesiveness of polyurethane under temperature control makes the stone and polyurethane effectively combined without any adhesive layer. The utility model solves the problems of low production efficiency, large influence by construction site environment, long construction period, low structural strength and safety of the existing thermal insulation composite boards used in buildings, and has the advantages of high production efficiency, little influence by construction site environment and convenient construction , high structural strength and safety, long service life, good heat preservation and waterproof performance, etc.

Description

Thermal insulation and decorative composite panels for buildings

technical field

The utility model relates to a building material, in particular to a thermal insulation and decoration composite board for building.

Background technique

The most critical part of building energy saving is to set up the building exterior wall insulation system. There are many disadvantages and deficiencies in the thermal insulation system of the external wall of the building currently used, which has brought many irreparable consequences to the construction.

In recent years, the development and development of thermal insulation and decoration integrated composite board series products and system engineering for exterior wall buildings is becoming an important and basic building energy-saving technology.

At present, most thermal insulation composite panels for construction in China are not suitable for one-time molding and continuous production on the production line. Most of them are even produced by hand, which is low in efficiency and high in cost. The needs of large-scale project duration.

In the construction of the traditional exterior wall insulation and decoration system, the current situation of long construction period, complex construction, and outstanding influence of internal and external factors such as site environment and climate, quality of installation workers, and material compatibility has continued. For a long time, the thermal insulation and decorative composite panels for exterior walls have low structural strength and safety, and accidents such as falling off and cracking have occurred, and they do not meet the requirements of national standards for fire protection and waterproofing.

The characteristics of several commonly used insulation materials are as follows:

1. Expanded polystyrene board (EPS)

The thermal conductivity is 0.038-0.041, and there are many construction procedures, the dry-hanging ash is too thick, easy to fall off, the quality is not easy to control, and cracks, moisture penetration and water return are prone to occur.

2. Extruded polystyrene board (XPS)

Thermal conductivity (0.028-0.03), the insulation layer has interface bonding treatment, the aging time is long, the interface is easy to fall off, hollow, and the surface layer is easy to crack.

3. Rock wool

The thermal conductivity is 0.041-0.045, the water absorption is high, the heat preservation effect is poor, and the strength is poor, so it is not easy to directly make it on the inner and outer walls.

4. Rigid polyurethane foam (referred to as rigid polyurethane foam)

In-situ foaming has a thermal conductivity of 0.025-0.028, good water resistance, and good heat preservation effect, but it has high requirements for the external climate and cannot give full play to the advantages of polyurethane, resulting in uneven foaming and shrinkage, making the wall surface uneven.

Utility model content

The purpose of this utility model is to provide a thermal insulation and decorative composite board for buildings to solve the problems of low production efficiency, great influence of the construction site environment, long construction period, low structural strength and low safety of the existing thermal insulation composite boards for buildings.

The purpose of this utility model is achieved through the following technical solutions:

The utility model relates to an insulating and decorative composite board for building, which comprises a cement-based backing layer, a polyurethane hard foam layer and a stone veneer layer or a silicon-calcium board layer which are sequentially composited together.

Preferably, the thermal insulation and decorative composite board for building also includes a connecting piece for reinforcing the connection between the hard polyurethane foam layer and the stone veneer layer or the silicon-calcium board layer.

Preferably, the connecting piece includes bolts and nuts, the bolts or nuts are embedded in the stone veneer layer or the calcium silicate board layer, and the nuts or bolts are embedded in the hard polyurethane foam layer.

Preferably, the connecting piece also includes an embedded part embedded in the hard polyurethane foam layer, and the embedded part includes two mutually perpendicular connecting surfaces, one of which is connected to the stone material through the bolt and the nut. The facing layer or the silicon-calcium board layer is connected, and the other connection surface can be reinforced and connected with the polyurethane rigid foam layer through bolts and nuts embedded in the polyurethane rigid foam layer.

Preferably, the cement-based backing layer is cement fiberboard.

The working principle of the utility model is: using the excellent thermal insulation performance of rigid polyurethane foam and the cohesiveness under temperature control, etc., under the conditions of factory production, the cement fiber board and the stone veneer layer or the silicon-calcium board layer are combined together. , and on the back of the stone veneer layer or calcium-silicon board layer, install back bolts or inlaid nuts to strengthen the connection between layers, and set up special stainless steel embedded parts, thus making it hot-pressed and foamed. Composite panels with excellent properties such as double-layer reinforcement, light weight, good thermal insulation effect, and convenient construction.

The beneficial effects of the utility model are: (1) suitable for factory production, high production efficiency, less affected by the environment of the construction site, and short construction period; (2) high structural strength and safety; (3) waterproof and thermal insulation effects Even better, it can fully meet the requirements of the 65% building energy-saving standard.

Description of drawings

The utility model will be described in further detail below according to the accompanying drawings and embodiments.

Fig. 1 is a schematic cross-sectional view of a thermal insulation and decorative composite panel for buildings of the present invention.

In the figure: 1. Cement-based backing layer; 2. Polyurethane hard foam layer; 3. Stone veneer layer or silicon-calcium board layer; 4. Bolts; 5. Nuts; 6. Embedded parts; 7. Nuts.

Detailed ways

As shown in Figure 1, the thermal insulation and decorative composite board for buildings of the present invention includes a cement-based backing layer 1, a hard polyurethane foam layer 2, and a stone veneer layer or a silicon-calcium board layer 3 that are sequentially composited together.

Preferably, the thermal insulation and decorative composite board for building also includes a connecting piece for strengthening the polyurethane rigid foam layer 2 and the stone veneer layer or the silicon-calcium board layer 3 .

Preferably, the connector includes bolts 4 and nuts 5 , the nuts 5 are embedded in the stone veneer layer or the calcium silicate board layer 3 , and the bolts 5 are embedded in the hard polyurethane foam layer 2 .

Preferably, the connector also includes an embedded part 6 embedded in the hard polyurethane foam layer 2, and the embedded part 6 includes two mutually perpendicular connection surfaces, one of which passes through the bolt 4 and the nut 5 is connected with the stone veneer layer or calcium-silicon board layer 3, and the other connection surface can be reinforced and connected with the polyurethane rigid foam layer 2 through bolts and nuts 7 pre-embedded in the polyurethane rigid foam layer.

Preferably, the cement-based backing layer 1 is cement fiberboard.

The manufacture method of the thermal insulation and decoration composite board for building of the present utility model is:

(1) Material selection and dust removal. Choose 6mm-15mm thick stone sheet, 2.5mm thick cement fiberboard pressure board or magnesium oxide cement board.

(2) After washing with water, dry with infrared rays at high temperature, install back bolts or inlaid nuts on the back of the natural stone, and set stainless steel embedded parts, heat to 60-80°, and then keep warm on the temperature control table.

(3) Put it on a 300-ton lamination machine (the lamination machine is 30m×1.8m two plus two laminations, and can produce any size of 850cm×150cm×20cm), and the density of polyurethane layer can be 20-200kg/m ² , covered with fiber-reinforced low-alkali cement boards.

(4) Use a foaming machine to foam polyurethane rigid foam, spray it between the two layers with a mixing gun head, and laminate it between a 300-ton press with a temperature control device, directly foaming, curing, and heating Compression molding and demoulding (the largest size can produce large plates with a thickness of 150cm×850cm×20cm). The thermal conductivity can be between 0.017-0.025w/mk (it can be produced according to the national specifications for insulation boards or exceed the requirements above the specifications). The unique adhesion of polyurethane under temperature control makes the stone and polyurethane effectively combined without any adhesive layer.

There are back bolts or inlaid nuts on the back of the natural stone, and there are special stainless steel embedded parts, which have double-layer reinforcement after hot-pressing and foaming.

The utility model can be constructed by a dry-hanging method or a sticking-hanging method, and the sticking-hanging method is preferred. The so-called sticking method refers to bonding the pre-embedded pendant to the wall after bonding the thermal insulation and decorative composite board with the base surface of the wall with cement. Because the thermal insulation and decoration composite board for building of the present utility model adopts a cement-based backing, it can be directly connected with the wall with cement mortar to realize the connection of cement with cement, which is the simplest, cheapest and most reliable. The buried pendants are anchored to the wall, and the construction can be completed by treating the gaps with weather-resistant adhesives. In this way, an exterior wall decoration and heat preservation system with good energy saving, heat preservation, flame retardancy, noise reduction and meeting various high-standard building requirements has been formed.

Claims (5)

1. A thermal insulation and decorative composite board for building, characterized in that: it comprises a cement-based backing layer, a polyurethane hard foam layer and a stone veneer layer or a silicon-calcium board layer compounded together successively. 2. The thermal insulation and decoration composite board for building according to claim 1, characterized in that it also includes a connector for reinforcing the connection between the hard polyurethane foam layer and the stone veneer layer or the silicon-calcium board layer. 3. The thermal insulation and decorative composite panel for building according to claim 2, characterized in that: the connectors include bolts and nuts, and the bolts or nuts are embedded in the stone veneer layer or the silicon-calcium board layer, and the nuts Or the bolts are embedded in the hard polyurethane foam layer. 4. The thermal insulation and decorative composite board for building according to claim 3, characterized in that: the connectors also include embedded parts embedded in the hard polyurethane foam layer, and the embedded parts include two mutually perpendicular Connecting surfaces, one of which is connected to the stone veneer layer or calcium-silicon board layer through the bolts and nuts, and the other connecting surface can be connected to the polyurethane rigid foam layer through bolts and nuts pre-embedded in the polyurethane rigid foam layer Strengthen the connection. 5. The thermal insulation and decorative composite board for building according to any one of claims 1 to 4, characterized in that: the cement-based backing layer is a cement fiber board.

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