Polyurethane rock wool thermal insulation waterproof roof construction system

Abstract

The utility model discloses a kind of polyurethane rock wool heat preservation waterproof roof construction systems, including structural purline, profiled steel bottom plate is fixed on the structural purline, non-woven fabric, sound-absorbing glass wool, gas barrier film, polyurethane rock wool insulation board are sequentially laid on profiled steel bottom plate, polyurethane foaming layer filling aperture is provided on polyurethane rock wool insulation board upper surface, galvanized aluminum magnesium steel flat plate and SBS waterproof coiled material are provided on polyurethane foaming layer, polyurethane waterproof layer is sprayed on SBS waterproof coiled material.The utility model uses the mode of polyurethane foaming on polyurethane rock wool board, makes it evenly cover and permeate into rock wool insulation board aperture, forms continuous sealing waterproof and moistureproof closed layer, improves the open-cell structure of rock wool, overcomes the problem that rock wool itself is easily water-absorbed.Spray polyurethane waterproof layer on the outermost layer of surface structure simultaneously, so that waterproof layer forms complete surface, without lap, easily form waterproof layer at complex node, improve the heat preservation and waterproof function of roof.

Description

Technical Field

[0001] This utility model relates to the field of building roofing engineering technology, specifically to a polyurethane rock wool thermal insulation and waterproof roofing structure system. Background Technology

[0002] The primary functions of a building roof are waterproofing and insulation; therefore, the selection of waterproofing and insulation materials directly affects the final performance of the roof. Currently, large-scale building venues commonly use rock wool combined with roll-type waterproofing materials, such as asphalt-based (SBS), ethylene propylene diene monomer (EPDM), polypropylene (PVC), and thermoplastic polyolefin (TPO). However, rock wool insulation has a porous structure and readily absorbs water. Once water enters its pores, its insulation performance significantly decreases. Furthermore, roll-type waterproofing materials often use an overlapping installation method, which is highly susceptible to the quality of manual construction. Any gaps or weak overlaps at the joints can lead to leaks. Utility Model Content

[0003] This utility model provides a polyurethane rock wool thermal insulation and waterproof roof construction system, which adopts a construction form and construction method of "polyurethane rock wool board + polyurethane waterproof layer", which can effectively solve the above problems and improve the thermal insulation and waterproof function of the roof.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a polyurethane rock wool thermal insulation and waterproof roofing structure system, comprising structural purlins, on which a profiled steel base plate is fixed, and on which non-woven fabric, sound-absorbing glass wool, an air-tight membrane, and a polyurethane rock wool insulation board are sequentially laid, with a polyurethane foam layer filling the pores to form a sealed waterproof layer on the upper surface of the polyurethane rock wool insulation board, and a galvanized aluminum-magnesium steel plate and an SBS waterproof membrane are disposed on the polyurethane foam layer, with a polyurethane waterproof layer sprayed on the SBS waterproof membrane.

[0005] The surface structure of polyurethane rock wool insulation board consists of an upper surface of ordinary rock wool board filled with polyurethane foam to create a sealed surface. A galvanized aluminum-magnesium steel plate compacts the foam layer and acts as a leveling layer, ensuring a smooth surface. Simultaneously, the lower surface of the galvanized aluminum-magnesium steel plate connects to the polyurethane rock wool insulation board through the polyurethane foam layer, providing a seal and connection. SBS waterproof membrane is laid on the completed upper surface of the galvanized aluminum-magnesium steel plate, bonding it to the surface and providing an additional layer of waterproofing.

[0006] Furthermore, the structural purlins are made of galvanized rectangular steel pipes or other types of steel, and are fixed to the main structure by welding or bolting, arranged in a matrix, with adjustable spacing.

[0007] Furthermore, the profiled steel base plate is an aluminum-zinc-magnesium perforated profiled steel sheet, with several punched holes on both sides of the web, and is fixed to the structural purlins by self-tapping screws. The punched holes in the web allow indoor noise to pass through and be absorbed by the sound-absorbing glass wool, reducing indoor noise.

[0008] Furthermore, the average perforation rate of the stamped holes in the profiled steel base plate is 20%.

[0009] Furthermore, the non-woven fabric is fully laid on the profiled steel base plate, and sound-absorbing glass wool is also fully laid on it. Both the non-woven fabric and the sound-absorbing glass wool are flexible materials, which can conform to the shape of the profiled steel base plate and fit the surface of the profiled steel base plate.

[0010] Furthermore, the vapor barrier membrane is a thin polymer material, fully laid on the sound-absorbing glass wool, and the polyurethane rock wool insulation board is laid on the vapor barrier membrane and fixed to the profiled steel base plate with rock wool nails. The function of the vapor barrier membrane is to prevent water vapor from entering the insulation layer, thus avoiding a decrease in thermal resistance after the insulation layer absorbs water, which would affect the insulation effect.

[0011] Furthermore, the polyurethane waterproof layer comprises a three-layer structure consisting of a two-component epoxy resin primer, a two-component polyurethane waterproof intermediate coat, and an anti-UV polyurethane topcoat.

[0012] A construction method for a polyurethane rock wool thermal insulation and waterproof roofing system includes the following steps: 1) Install structural purlins: The structural purlins are arranged at intervals according to the specific requirements of the project and are fixed to the main structure by welding or bolts. 2) Fixing the profiled steel base plate: The profiled steel base plate is fixed to the structural purlins; 3) Laying the intermediate layer: Lay non-woven fabric, sound-absorbing glass wool, and air-barrier membrane in sequence; 4) Install the insulation layer: Use polyurethane rock wool insulation board as the insulation layer, seal the surface with polyurethane foam layer, and fix it to the profiled steel base plate; 5) Leveling and sealing: The galvanized aluminum-magnesium steel plate is covered with a polyurethane foam layer, compacted and leveled, and then sealed by bonding with the polyurethane foam layer. 6) Waterproofing construction: hot-melt SBS waterproof membrane is laid, and finally a polyurethane waterproof layer is sprayed on the whole.

[0013] Furthermore, the SBS waterproof membrane is applied using a high-pressure blowtorch for hot-melt installation, with the blowtorch angled at 45° and approximately 300mm away from the adhesive surface.

[0014] The sprayed polyurethane waterproof layer adopts a combination of roller coating and spraying process, and is applied in sequence as a two-component epoxy resin primer, a two-component polyurea waterproof intermediate coat, and a UV-resistant polyurethane topcoat.

[0015] This invention employs a construction method that incorporates a polyurethane foam layer on a polyurethane rock wool board. This foam layer evenly covers and penetrates the pores of the rock wool insulation board, forming a continuous, sealed, waterproof, and moisture-proof layer. This improves the open-pore structure of the rock wool and overcomes the problem of rock wool's tendency to absorb water. Simultaneously, a polyurethane waterproof layer is sprayed onto the outermost surface. This polyurethane waterproof layer uses a three-layer structure: a two-component epoxy resin primer, a two-component polyurethane waterproof intermediate coat, and a UV-resistant polyurethane topcoat. This ensures a complete, seamless waterproof surface, easily forming a waterproof layer even at complex joints. Furthermore, polyurethane waterproof materials possess characteristics such as aging resistance, corrosion resistance, heat and cold resistance, strong adhesion, and high bonding strength, making them particularly suitable for roof waterproofing. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the system structure according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the perforation of the profiled steel base plate in an embodiment of this utility model; Figure 3 This is an enlarged view of the sprayed polyurethane waterproof layer in an embodiment of this utility model.

[0017] Figure label: 1. Structural purlins; 2. Corrugated steel base plate; 21. Stamping holes; 3. Non-woven fabric; 4. Sound-absorbing glass wool; 5. Air barrier membrane; 6. Polyurethane rock wool insulation board; 61. Rock wool nails; 62. Polyurethane foam layer; 7. Galvanized aluminum-magnesium steel flat plate; 8. SBS waterproof membrane; 9. Sprayed polyurethane waterproof layer; 91. Two-component epoxy resin primer; 92. Two-component polyurethane waterproof intermediate coat; 93. UV-resistant polyurethane top coat. Detailed Implementation

[0018] The following provides a more detailed description of the specific implementation method of the polyurethane rock wool thermal insulation and waterproof roofing structure system of this utility model.

[0019] like Figure 1 and Figure 2As shown, this utility model discloses a polyurethane rock wool thermal insulation and waterproof roofing system, comprising: structural purlins 1; a profiled steel base plate 2 fixed to the structural purlins 1; non-woven fabric 3 and sound-absorbing glass wool 4 fully covered from bottom to top on the profiled steel base plate 2; an air-barrier membrane 5 laid on the sound-absorbing glass wool 4, which is a thin polymer material and serves to prevent water vapor from entering the insulation layer; a polyurethane rock wool insulation board 6 laid on the air-barrier membrane 5 and fixed to the profiled steel base plate 2 by rock wool nails 61; and a polyurethane rock wool insulation board 6 laid on the sound-absorbing glass wool. The galvanized aluminum-magnesium steel plate 7 on the insulation board 6 has its lower surface connected to the polyurethane rock wool insulation board 6 through a polyurethane foam layer, which serves to seal and level the surface. The SBS waterproof membrane 8 laid on the galvanized aluminum-magnesium steel plate 7 is bonded to the galvanized aluminum-magnesium steel plate 7 using a high-pressure blowtorch hot-melt construction process, which serves as a waterproof layer. The outermost waterproof layer 9 is a sprayed polyurethane waterproof layer composed of a three-layer structure consisting of a two-component epoxy resin primer 91, a two-component polyurethane waterproof intermediate coat 92, and an anti-UV polyurethane top coat 93.

[0020] The implementation steps are as follows: First, install the structural purlins 1. In this embodiment, the structural purlins 1 are 150x100x4 (mm) galvanized rectangular steel pipes, arranged at a spacing of 3.6 meters. Depending on the specific requirements of the project, other cross-sectional sizes of galvanized rectangular steel pipes or other types of steel sections can be used, and the arrangement spacing can also be set according to the specific requirements of the project. They are then fixed to the main structure by welding or bolting.

[0021] A profiled steel base plate 2 is installed on the structural purlin 1. In this embodiment, the profiled steel base plate 2 is made of 1.2mm thick YX-76-200-600 type aluminum-zinc-magnesium perforated profiled steel sheet with a peak height of 76mm, a wave pitch of 200mm, and an effective plate width of 600mm. A punching hole 21 is provided in the web of the profiled steel base plate 2. The punching hole is adjusted appropriately according to the specific project (in this embodiment, a hole diameter of 4mm is used), and the average perforation rate is 20%. The profiled steel base plate 2 is fixed to the structural purlin 1 with stainless steel composite screws with a diameter of 5.5mm. Two stainless steel composite screws are provided at each contact point between the trough and the structural purlin 1.

[0022] Then, non-woven fabric 3, sound-absorbing glass wool 4, and air-barrier membrane 5 are laid in sequence (thickness and other parameters are adjusted according to the specific project). In this embodiment, the sound-absorbing glass wool 4 has a density of 24 kg / m³ and a thickness of 75 mm; the air-barrier membrane 5 has a thickness of 0.3 mm.

[0023] A polyurethane rock wool insulation board 6 is laid on top as an insulation layer (the density, thickness, and other parameters are adjusted according to the specific project). In this embodiment, the polyurethane rock wool insulation board 6 has a density of 120 kg / m³ and a thickness of 50 mm; and is fixed to the profiled steel base plate 2 with rock wool nails 61.

[0024] The polyurethane foam layer 62 on the polyurethane rock wool insulation board 6 is a surface structure of ordinary rock wool board. The upper surface is filled with pores by polyurethane foaming so as to form a sealed surface on the outer surface, thereby improving the waterproofness of the rock wool.

[0025] After spraying the polyurethane foam layer 62, a galvanized aluminum-magnesium steel plate 7 is promptly laid on the surface of the polyurethane foam layer 62. This serves to compact the foam while also acting as a leveling layer to make the foam layer flat. At the same time, the lower surface of the galvanized aluminum-magnesium steel plate 7 is connected to the polyurethane rock wool insulation board 6 through polyurethane foaming, thus achieving a sealing and connection function. In this embodiment, the thickness of the galvanized aluminum-magnesium steel plate 7 is adjusted according to the specific project. In this embodiment, a 0.6mm thick galvanized aluminum-magnesium steel plate is used.

[0026] A high-pressure blowtorch hot-melt construction process is used to bond SBS waterproof membrane 8 to the upper surface of the galvanized aluminum-magnesium steel plate 7. A high-pressure blowtorch is used to evenly heat the angle between the SBS waterproof membrane 8 and the galvanized aluminum-magnesium steel plate 7, with the blowtorch positioned along the center line of the angle at approximately 45°, and the height of the blowtorch about 300mm from the bonding surface. After the surface of the SBS waterproof membrane 8 has melted, the rolled membrane is rolled forward to bond it to the galvanized aluminum-magnesium steel plate 7; in this embodiment, the thickness of the SBS waterproof membrane 8 is 4mm.

[0027] Finally, a polyurethane waterproof layer 9 is sprayed. The sprayed polyurethane waterproof layer 9 consists of three layers: a two-component epoxy resin primer 91, a two-component polyurethane waterproof intermediate coat 92, and an anti-UV polyurethane topcoat 93. All of them are in liquid form and are applied sequentially by roller coating and spraying. Due to the fluidity of the liquid, it can better seal the tiny gaps in the roof, thus serving as an external waterproof layer.

[0028] The specific construction process is as follows: 1. Grassroots handling: Clean the SBS waterproof membrane 8 thoroughly.

[0029] 2. Application of two-component epoxy resin primer 91 (roller coating) Stir and mix the two-component epoxy primer, and apply it to the cleaned SBS waterproof membrane 8 using a wool roller.

[0030] Function: The purpose of applying the primer is to enhance the adhesion between the two-component polyurethane waterproof intermediate coat 92 and the SBS waterproof membrane 8.

[0031] 3. Application of two-component polyurethane waterproof intermediate coat 92: Before application, mix the two-component polyurethane using a pneumatic mixer for more than 15 minutes, then proceed with the spraying. Apply the two-component polyurethane waterproof intermediate coat 92 within 4-48 hours after the application of the two-component epoxy resin primer 91. During spraying, ensure that each coat is applied perpendicular to the previous one to guarantee a uniform coating.

[0032] In this embodiment, the thickness of the two-component polyurethane waterproof intermediate coating 92 is adjusted according to the specific project; in this embodiment, it is 2 mm.

[0033] Function: It forms a highly elastic, high-strength, continuous waterproof coating, which is the most important functional part of the waterproofing system.

[0034] 4. Application of UV-resistant polyurethane topcoat 93 The UV-resistant polyurethane topcoat 93 is a weather-resistant polyurethane coating. Apply the topcoat using a wool roller within 6-48 hours after spraying the two-component polyurethane waterproof intermediate coat 92. Ensure the two-component polyurethane waterproof intermediate coat 92 is completely dry before roller application.

[0035] Function: The topcoat has excellent UV aging resistance, ensuring the long-term exposure requirements of the sprayed waterproof system, and also seals small pinholes on the surface of the two-component polyurethane waterproof intermediate coating 92.

[0036] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected by this utility model. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A polyurethane rock wool thermal insulation and waterproof roofing system, characterized in that: The system includes structural purlins, on which a profiled steel base plate is fixed. On the profiled steel base plate, non-woven fabric, sound-absorbing glass wool, an air-barrier membrane, and a polyurethane rock wool insulation board are laid in sequence. On the upper surface of the polyurethane rock wool insulation board, a polyurethane foam layer is provided to fill the pores and form a sealed waterproof layer. On the polyurethane foam layer, a galvanized aluminum-magnesium steel plate and an SBS waterproof membrane are provided. The SBS waterproof membrane is sprayed with a polyurethane waterproof layer.

2. The polyurethane rock wool thermal insulation and waterproof roofing system according to claim 1, characterized in that: The structural purlins are made of galvanized rectangular steel pipes and are fixed to the main structure by welding or bolting, arranged in a matrix with adjustable spacing.

3. The polyurethane rock wool thermal insulation and waterproof roofing system according to claim 1, characterized in that: The profiled steel base plate is an aluminum-zinc-magnesium perforated profiled steel sheet, with several punched holes on both sides of the web plate, and is fixed to the structural purlins by self-tapping screws.

4. The polyurethane rock wool thermal insulation and waterproof roofing system according to claim 3, characterized in that: The average perforation rate of the stamped holes in the profiled steel base plate is 20%.

5. The polyurethane rock wool thermal insulation and waterproof roofing system according to claim 1, characterized in that: The non-woven fabric is fully laid on the profiled steel base plate, and sound-absorbing glass wool is also fully laid on it. Both the non-woven fabric and the sound-absorbing glass wool are flexible materials that can conform to the shape of the profiled steel base plate and fit the surface of the profiled steel base plate.

6. The polyurethane rock wool thermal insulation and waterproof roofing system according to claim 5, characterized in that: The air-barrier membrane is a thin polymer material that is fully laid on the sound-absorbing glass wool. The polyurethane rock wool insulation board is laid on the air-barrier membrane and fixed to the profiled steel base plate with rock wool nails.

7. The polyurethane rock wool thermal insulation and waterproof roofing system according to claim 1, characterized in that: The polyurethane waterproof layer comprises a three-layer structure consisting of a two-component epoxy resin primer, a two-component polyurethane waterproof intermediate coat, and an anti-UV polyurethane topcoat.

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