Rubber reinforced self-adhesion modified asphalt waterproof coiled material and roof heat insulation structure
By introducing a foam rubber layer and an isolation layer into the self-adhesive modified bitumen waterproof membrane, the problem of separate construction of roof waterproofing and insulation layers is solved, achieving more efficient heat insulation and waterproofing effects, and reducing construction complexity and cost.
Patent Information
- Application Number
- CN202520147710.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-01-22
AI Technical Summary
In existing technologies, the installation of roof waterproofing and insulation layers needs to be carried out separately, resulting in a large amount of work, high costs, and poor sealing of the insulation layer, which can easily lead to gaps and affect the heat insulation effect.
The rubber-reinforced self-adhesive modified bitumen waterproof membrane consists of a first self-adhesive modified bitumen layer, a second self-adhesive modified bitumen layer, and a foam rubber layer between the two. The low thermal conductivity of the foam rubber layer blocks heat transfer, and the bonding tightness and construction efficiency are improved through the isolation layer and the overlapping edge.
It simplifies the construction process, improves the tight bond between the insulation layer and the waterproof layer, enhances the thermal insulation performance, and reduces the difficulty and cost of construction.
Smart Images
Figure CN223937486U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building waterproofing materials technology, and in particular to a rubber-reinforced self-adhesive modified bitumen waterproof membrane and a roof insulation structure. Background Technology
[0002] Asphalt roofing membrane is a commonly used building material, typically used for waterproofing and damp-proofing roofs and basements. According to relevant roofing engineering specifications, a common roofing structure, from top to bottom, consists of: a protective layer, an insulation layer, a waterproofing layer, a leveling layer, a slope-forming layer, and a structural layer. The common construction method involves applying the waterproofing layer onto the leveling layer, then laying the insulation layer, and finally applying the protective layer on top of the insulation layer.
[0003] However, during construction, the waterproof layer and the insulation layer usually need to be laid in sequence, which involves a large amount of work and high costs for labor and materials. Utility Model Content
[0004] In view of this, in order to at least partially solve at least one of the aforementioned technical problems, the present invention provides a rubber-reinforced self-adhesive modified bitumen waterproof membrane and a roof insulation structure.
[0005] An embodiment of this utility model provides a rubber-reinforced self-adhesive modified bitumen waterproof membrane, comprising a first self-adhesive modified bitumen layer, a second self-adhesive modified bitumen layer, and a foamed rubber layer located between the first self-adhesive modified bitumen layer and the second self-adhesive modified bitumen layer.
[0006] In some illustrative embodiments, the foaming rate of the foam rubber layer is 2 to 6 times.
[0007] In some illustrative embodiments, the thickness of the foam rubber layer is 3 to 5.5 mm.
[0008] In some illustrative embodiments, the foaming rate of the foam rubber layer is 3 times, the thickness of the foam rubber layer is 3.5~4mm, and the width is 1m.
[0009] In some illustrative embodiments, the thickness of the first self-adhesive modified asphalt layer is 0.5~0.7 mm; the thickness of the second self-adhesive modified asphalt layer is 0.9~1.1 mm.
[0010] In some illustrative embodiments, the rubber-reinforced self-adhesive modified bitumen waterproof membrane further includes: a first release layer located on the surface of the first self-adhesive modified bitumen layer that is not in contact with the foam rubber layer; and / or a second release layer located on the surface of the second self-adhesive modified bitumen layer that is not in contact with the foam rubber layer.
[0011] In some illustrative embodiments, the thickness of the first isolation layer is 0.01 mm.
[0012] In some illustrative embodiments, at least one overlap edge is also provided between the first isolation layer and the first self-adhesive modified bitumen layer near the end.
[0013] In some illustrative embodiments, the width of the overlap is ≤10cm.
[0014] An embodiment of this utility model also provides a roof insulation structure, which is formed by splicing together multiple of the above-mentioned rubber-reinforced self-adhesive modified bitumen waterproof membranes.
[0015] According to the above embodiments of the present invention, the rubber-reinforced self-adhesive modified bitumen waterproof membrane is provided by setting a foam rubber layer between the first self-adhesive modified bitumen layer and the second self-adhesive modified bitumen layer. Since the foam rubber layer is a porous material, it is filled with a large amount of air or other gases. The thermal conductivity of the gas is much lower than that of the bitumen, so the foam rubber layer has low thermal conductivity and can effectively block heat transfer, thus achieving a better heat insulation effect. Attached Figure Description
[0016] Figure 1 This is a cross-sectional schematic diagram of a rubber-reinforced self-adhesive modified bitumen waterproof membrane according to an embodiment of the present invention.
[0017] [Explanation of Labels in the Attached Image]
[0018] 1-First self-adhesive modified bitumen layer;
[0019] 2-Second self-adhesive modified asphalt layer;
[0020] 3-Foam rubber layer;
[0021] 4-First isolation layer;
[0022] 5-Second isolation layer;
[0023] 6- Overlapping edge;
[0024] W - Width of the overlap edge. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0026] However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, numerous specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of the present invention.
[0027] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "comprising" as used herein indicates the presence of features, steps, or operations, but does not exclude the presence or addition of one or more other features.
[0028] When using expressions such as "at least one of A, B, and C," the expression should generally be interpreted in accordance with the meaning commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.). When using expressions such as "at least one of A, B, or C," the expression should generally be interpreted in accordance with the meaning commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.).
[0029] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.
[0030] In related technologies, when laying roof waterproofing and insulation, a layer of asphalt waterproof membrane is usually laid first, followed by a layer of insulation. However, this method involves a large workload and high construction costs. Furthermore, laying the insulation layer on top of the asphalt waterproof membrane can easily result in an insecure seal, uneven arrangement, and gaps, thus reducing the overall thermal insulation performance.
[0031] Therefore, how to provide a bituminous waterproof membrane that can save on the laying process and enable the insulation layer to bond tightly with the bituminous waterproof membrane in order to improve the thermal insulation effect has become an urgent technical problem to be solved.
[0032] Figure 1 This is a cross-sectional schematic diagram of a rubber-reinforced self-adhesive modified bitumen waterproof membrane according to an embodiment of the present invention.
[0033] According to the rubber-reinforced self-adhesive modified bitumen waterproof membrane provided by this utility model, such as Figure 1 As shown, the rubber-reinforced self-adhesive bitumen waterproof membrane of this utility model includes a first self-adhesive modified bitumen layer 1, a second self-adhesive modified bitumen layer 2, and a foam rubber layer 3 located between the first self-adhesive modified bitumen layer 1 and the second self-adhesive modified bitumen layer 2.
[0034] According to an embodiment of this utility model, the foam rubber layer 3 is a porous material filled with a relatively large amount of gas. Since the thermal conductivity of gas is much lower than that of solid materials (such as modified asphalt), the foam rubber layer 3 has low thermal conductivity. Placing the foam rubber layer 3 between the first self-adhesive modified asphalt layer 1 and the second self-adhesive modified asphalt layer 2 effectively blocks heat transfer. In building construction, a thermal bridge is understood to be a path through which heat easily passes. Using the foam rubber layer 3 as a sandwich layer can effectively break up any potential thermal bridges and reduce the possibility of direct heat conduction.
[0035] A foam rubber layer 3 is placed between two layers of self-adhesive modified bitumen. Utilizing the excellent thermal insulation properties of foam rubber, a relatively effective thermal barrier is formed, which helps improve the overall thermal insulation performance of the bitumen waterproof membrane. When subsequently applied to structures such as roofs, this avoids the cumbersome procedure of separately applying waterproof and insulation layers, reducing the amount of work. It also avoids the possibility of poor thermal insulation due to poor contact between the insulation and waterproof layers. By combining the foam rubber layer 3 with the self-adhesive modified bitumen, the performance of both layers is balanced, making it suitable for energy-saving, thermal insulation, and waterproofing projects in common buildings.
[0036] It is understandable that the first self-adhesive modified asphalt layer 1 and the second self-adhesive modified asphalt layer 2 can be reinforced with reinforcing agents as needed to improve the mechanical properties and dimensional stability of the modified asphalt. Reinforcing agents can be, for example, polyester base, glass fiber base, polymer film base, etc.
[0037] The first self-adhesive modified bitumen layer 1 and the second self-adhesive modified bitumen layer 2 can be made of conventional self-adhesive modified bitumen, which has both waterproof and adhesive effects, and its performance meets the requirements of GB 23441-2009 "Self-adhesive polymer modified bitumen waterproof membrane".
[0038] According to embodiments of this invention, the foaming rate of the foam rubber layer is 2 to 6 times, for example, 2, 3, 4, 5, or 6 times. The foaming rate can be understood as the degree of volume expansion of the foam rubber during the foaming process, that is, the ratio of the volume of the foam rubber after foaming to the volume of the raw material before foaming. Adjusting the foaming rate within the above range ensures that a large amount of air is trapped inside the foam rubber, which helps to improve the thermal insulation effect of the foam rubber; at the same time, it does not excessively weaken the mechanical strength of the foam rubber, thus providing a certain degree of support for the rubber-reinforced self-adhesive modified bitumen waterproof membrane.
[0039] According to embodiments of this utility model, the thickness of the foam rubber layer 3 is 3~5.5mm, for example, it can be 3mm, 3.5mm, 4mm, 4.5mm, 5mm or 5.5mm. Adjusting the thickness of the foam rubber layer 3 within the above range can provide effective thermal barrier for the rubber-reinforced self-adhesive modified bitumen waterproof membrane, reducing heat conduction. The foam rubber layer 3 of the above thickness helps maintain the stability of the roof waterproof structure, and can maintain shape stability even under large changes in temperature and humidity, reducing the risk of membrane cracking or delamination between layers. In addition, the above thickness ensures good workability of the rubber-reinforced self-adhesive modified bitumen waterproof membrane, and it is not difficult to lay or bond due to excessive thickness, making the construction process simpler and faster, further reducing the difficulty of installation.
[0040] Preferably, the foam rubber layer 3 has a foaming rate of 3 times, a thickness of 3.5~4mm, and a width of 1m. During roof installation, it was found that setting the foaming rate, thickness, and width of the foam rubber layer 3 within the aforementioned ranges ensures excellent thermal insulation while also facilitating manual installation and further reducing installation difficulty.
[0041] Furthermore, the material of the foam rubber layer 3 can be foam silicone rubber, such as mixed-cell foam silicone rubber, which has excellent high-temperature resistance and low-temperature flexibility, and good thermal insulation effect. Foam silicone rubber can be prepared by a high-temperature vulcanization process.
[0042] According to an embodiment of this utility model, the thickness of the first self-adhesive modified bitumen layer 1 is 0.5~0.7mm, for example, it can be 0.5mm, 0.6mm or 0.7mm. The first self-adhesive modified bitumen layer 1 can be understood as a surface self-adhesive modified bitumen layer disposed away from the roof substrate. The thickness of the second self-adhesive modified bitumen layer 2 is 0.9~1.1mm, for example, it can be 0.9mm, 1mm or 1.1mm. The second self-adhesive modified bitumen layer 2 can be understood as a bottom self-adhesive modified bitumen layer disposed close to the roof substrate. The thinner thickness of the first self-adhesive modified bitumen layer 1 allows for better adaptation to the minor unevenness of the surface of the foam rubber layer 3, ensuring tight adhesion and obtaining better bonding strength. The relatively thicker thickness of the second self-adhesive modified bitumen layer 2 helps to provide better protection for the waterproof structure, increases the tensile strength and durability of the waterproof structure, helps to disperse the pressure and stress applied to it, and has better sealing performance.
[0043] According to embodiments of the present invention, such as Figure 1As shown, the rubber-reinforced self-adhesive modified bitumen waterproof membrane further includes: a first isolation layer 4 located on the surface of the first self-adhesive modified bitumen layer 1 that is not in contact with the foam rubber layer 3, the first isolation layer 4 can be understood as the upper isolation layer of the waterproof membrane; and / or a second isolation layer 5 located on the surface of the second self-adhesive modified bitumen layer 2 that is not in contact with the foam rubber layer 3. The second isolation layer 5 can be understood as the lower isolation layer of the waterproof membrane. The two isolation layers are provided to serve as a barrier, preventing the self-adhesive bitumen from adhering to other external substances and maintaining the adhesiveness of the self-adhesive modified bitumen.
[0044] The first release layer 4 and the second release layer 5 can be made of silicone-coated or uncoated reinforcing film or plastic film. The reinforcing film can be, for example, a polyester-based reinforcing film, a fiberglass-based reinforcing film, or a polymer-based reinforcing film. The silicone-coated reinforcing film makes it easier to peel the release layer material from the self-adhesive modified asphalt layer, simplifying the construction process and improving efficiency.
[0045] Specifically, the second isolation layer 5 can be, for example, silicone-coated release paper. When constructing the roof, the second isolation layer 5 is removed, and the rubber-reinforced self-adhesive asphalt waterproof membrane is fixed to the location on the roof that requires waterproofing, heat insulation, and thermal insulation by utilizing the adhesiveness of the self-adhesive modified bitumen layer 2.
[0046] According to an embodiment of the present invention, the thickness of the first isolation layer 4 is 0.01 mm. Despite its thinness, the first isolation layer 4 still provides an effective anti-stick barrier, which helps to ensure that the first self-adhesive modified bitumen layer 1 does not adhere to other surfaces or itself in advance. Furthermore, the thinner isolation layer is easier to peel off from the first self-adhesive modified bitumen layer 1 and does not easily leave any residue.
[0047] According to an embodiment of the present invention, at least one overlapping edge 6 is further provided between the first isolation layer 4 near the end and the first self-adhesive modified asphalt layer 1. (Continue to refer to...) Figure 1 It can be understood that the portion of the first isolation layer 4 located on the surface of the overlap edge 6 can be a removable release paper, while the remaining portion of the first isolation layer 4 can be a non-removable silicone-coated or non-silicone-coated reinforcing film or plastic film. This portion is suitable for maintaining the integrity of the rubber-reinforced self-adhesive modified bitumen waterproof membrane and preventing unnecessary adhesion to other surfaces or itself. After the portion of the first isolation layer 4 located on the surface of the overlap edge 6 is removed, it can be sequentially overlapped with other adjacent rubber-reinforced self-adhesive modified bitumen waterproof membranes, improving the density and integrity of the roof installation, achieving a firm seal and neat arrangement of the entire surface of the rubber-reinforced self-adhesive modified bitumen waterproof membrane, and improving the thermal insulation effect.
[0048] It should be noted that on each rubber-reinforced self-adhesive modified bitumen waterproof membrane, there can be one overlap edge 6, for example, an overlap edge 6 set near one end; or there can be two overlap edges, for example, set on the left and right ends of the rubber-reinforced self-adhesive modified bitumen waterproof membrane respectively, so that adjacent rubber-reinforced self-adhesive modified bitumen waterproof membranes are more tightly connected to each other.
[0049] According to embodiments of this utility model, the width W of the overlap edge 6 is ≤10cm, for example, it can be 1cm, 2cm, 4cm, 5cm, 7cm, 9cm, or 10cm. Setting the overlap edge 6 to the above width helps to more effectively seal the joint between adjacent waterproof membranes, reducing the risk of moisture penetration through the overlap area, while ensuring good sealing and improving thermal insulation performance. The overlap edge 6 helps to disperse the stress applied to the joint, reducing the possibility of damage caused by local stress concentration, and makes it easier to align adjacent waterproof membranes, reducing construction difficulty and providing tolerance.
[0050] According to an embodiment of the present invention, the material of the overlapping edge 6 can be self-adhesive modified bitumen or hot melt adhesive to improve its bonding strength with the adjacent waterproof membrane.
[0051] According to another embodiment of the present invention, a method for preparing a rubber-reinforced self-adhesive modified bitumen waterproof membrane is provided, comprising the following steps.
[0052] The foamed rubber sheet is unfolded and stretched; self-adhesive asphalt is coated on both sides of the foamed rubber sheet; and a release material is attached to the self-adhesive asphalt surface on both sides of the foamed rubber sheet to prepare a rubber-reinforced self-adhesive modified asphalt waterproof membrane.
[0053] According to another embodiment of the present invention, a roof insulation structure is provided, which is formed by splicing together multiple of the above-mentioned rubber-reinforced self-adhesive modified bitumen waterproof membranes.
[0054] According to embodiments of this invention, the tight bonding between the self-adhesive modified bitumen layers ensures the overall structure's airtightness and reduces the possibility of moisture penetration. The composite structure of the foam box adhesive layer and the self-adhesive modified bitumen layer provides multi-layer protection, enhancing the overall structure's thermal insulation effect. The overlapping edges make the entire structure's splicing more stable and tight, further strengthening the overall structure's thermal insulation and waterproofing effects. The roof insulation structure can be adjusted according to different building types and climatic conditions, making it suitable for various occasions such as residential, commercial, and industrial buildings.
[0055] In one specific embodiment, a rubber-reinforced self-adhesive modified bitumen waterproof membrane is prepared as follows:
[0056] A foamed silicone rubber with a foaming rate of 3 was selected as foamed silicone rubber layer 3. The thickness of the foamed silicone rubber used was 3.5 mm. The foamed silicone rubber was a mixed-pore foam material and was prepared by room temperature vulcanization process.
[0057] The foamed silicone rubber sheet is unfolded and stretched to achieve a thickness of 3.5 mm and a width of 1 m.
[0058] Self-adhesive asphalt was applied to both sides of foamed silicone rubber by scraping at 150~170℃. The self-adhesive asphalt used was conventional self-adhesive modified asphalt, and its performance met the requirements for modified asphalt in GB 23441-2009 "Self-adhesive Polymer Modified Asphalt Waterproof Membrane". The thickness of the upper self-adhesive asphalt layer was 0.6mm, and the thickness of the lower self-adhesive asphalt layer was 1.0mm.
[0059] Separating materials are attached to the surfaces of the self-adhesive asphalt on both sides. The upper surface separating material is an LDPE film with a thickness of 0.01mm.
[0060] Thermal insulation performance tests were conducted on the rubber-reinforced self-adhesive modified bitumen waterproof membrane of this invention and conventional self-adhesive bitumen membrane (PE film surface). The rubber-reinforced self-adhesive modified bitumen waterproof membrane of this invention was applied outdoors to a 1m × 1m × 1m cement building model. Under the same conditions, the test results compared to ordinary self-adhesive bitumen membrane (PE reinforced film) are as follows:
[0061]
[0062] Comparative studies have shown that this product has better thermal insulation performance than conventional self-adhesive asphalt rolls, and it can be promoted as a roof insulation structure.
[0063] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A rubber-reinforced self-adhesive modified bitumen waterproof membrane, characterized in that, The rubber-reinforced self-adhesive bitumen waterproof membrane includes a first self-adhesive modified bitumen layer, a second self-adhesive modified bitumen layer, and a foamed rubber layer located between the first self-adhesive modified bitumen layer and the second self-adhesive modified bitumen layer.
2. The rubber-reinforced self-adhesive modified bitumen waterproof membrane according to claim 1, characterized in that, The foaming rate of the foamed rubber layer is 2 to 6 times.
3. The rubber-reinforced self-adhesive modified bitumen waterproof membrane according to claim 2, characterized in that, The thickness of the foam rubber layer is 3~5.5mm.
4. The rubber-reinforced self-adhesive modified bitumen waterproof membrane according to claim 3, characterized in that, The foam rubber layer has a foaming rate of 3 times, a thickness of 3.5~4mm, and a width of 1m.
5. The rubber-reinforced self-adhesive modified bitumen waterproof membrane according to any one of claims 1 to 4, characterized in that, The thickness of the first self-adhesive modified asphalt layer is 0.5~0.7mm; The thickness of the second self-adhesive modified asphalt layer is 0.9~1.1mm.
6. The rubber-reinforced self-adhesive modified bitumen waterproof membrane according to any one of claims 1 to 4, characterized in that, Also includes: A first isolation layer located on the surface of the first self-adhesive modified asphalt layer that is not in contact with the foam rubber layer; and / or A second isolation layer located on the surface of the second self-adhesive modified asphalt layer that is not in contact with the foam rubber layer.
7. The rubber-reinforced self-adhesive modified bitumen waterproof membrane according to claim 6, characterized in that, The thickness of the first isolation layer is 0.01 mm.
8. The rubber-reinforced self-adhesive modified bitumen waterproof membrane according to claim 6, characterized in that, At least one overlap edge is also provided between the first isolation layer and the first self-adhesive modified bitumen layer near the end.
9. The rubber-reinforced self-adhesive modified bitumen waterproof membrane according to claim 8, characterized in that, The width of the overlapping edge is ≤10cm.
10. A roof insulation structure formed by splicing together multiple rubber-reinforced self-adhesive modified bitumen waterproof membranes as described in any one of claims 1 to 9.