Exposed use bite lap waterproofing membrane

Abstract

The present application relates to waterproofing membrane technical field, propose a kind of exposed use occlusion lap waterproofing membrane, from top to bottom in turn include exposed weathering membrane, first pitch adhesive layer, cloth carcass base layer, second pitch adhesive layer and isolation layer;First pitch adhesive layer one end is equipped with lap opening, the upper surface of lap opening is equipped with opening upper isolation film, the lower surface of lap opening is equipped with opening lower isolation film;First pitch adhesive layer and second pitch adhesive layer independently include the following components: petroleum pitch, polymer modifier, softener, talcum powder;The penetration A of petroleum pitch at 25 DEG C, 100g load, 5s inside meets the following relationship with the specific surface area B of talcum powder: 50≤A / B≤180;Wherein, the unit of penetration A is dmm, the unit of specific surface area B is m 2 / g.The exposed use occlusion lap waterproofing membrane provided by the present application solves the technical problems of poor weather resistance and poor lap sealing reliability of the existing waterproofing membrane.

Description

Technical Field

[0001] This invention relates to the field of waterproof membrane technology, specifically to an exposed interlocking waterproof membrane. Background Technology

[0002] Exposed waterproof membranes are widely used in building roofs and exposed waterproofing systems. Due to long-term exposure to the natural environment, they need to have both excellent weather resistance and reliable overlap sealing. Existing exposed waterproof membranes generally have the following defects: (1) Poor reliability of overlap sealing, and problems such as cracking and curling are prone to occur during thermal expansion and contraction. Especially in the environment of alternating high and low temperatures, the overlap joint is prone to become a weak point in waterproofing, causing the risk of water leakage; (2) It is difficult to balance weather resistance and self-adhesive performance. The bonding performance between the exposed weather-resistant membrane and the asphalt adhesive layer is poor. Especially under the action of ultraviolet rays, it is prone to aging and failure. Long-term exposure can lead to a decline in mechanical properties, resulting in a decline in waterproof performance. Summary of the Invention

[0003] To address the above technical problems, this invention provides an exposed interlocking waterproof membrane suitable for waterproofing projects involving exposed roof structures, solving the problems of poor weather resistance and poor reliability of overlap sealing in existing waterproof membranes.

[0004] The specific technical solution of the present invention is as follows: According to one aspect of the present invention, an exposed interlocking waterproof membrane is provided, comprising, from top to bottom, an exposed weather-resistant membrane, a first bitumen adhesive layer, a fabric base layer, a second bitumen adhesive layer, and a release layer; one end of the first bitumen adhesive layer is provided with an overlap opening, the upper surface of the overlap opening is provided with an upper release membrane, and the lower surface of the overlap opening is provided with a lower release membrane. The first and second asphalt adhesive layers each independently comprise the following components by weight: 50 parts petroleum asphalt, 6-10 parts polymer modifier, 4-8 parts softener, and 20-30 parts talc powder; the penetration A of the petroleum asphalt at 25°C, under a 100g load, and within 5 seconds and the specific surface area B of the talc powder satisfy the following relationship: 50 ≤ A / B ≤ 180. Wherein, the unit of penetration A is dmm, and the unit of specific surface area B is m. 2 / g.

[0005] In the above technical solution, the penetration A of the petroleum asphalt at 25°C, 100g load, and within 5s is 60~100dmm.

[0006] In the above technical solution, the specific surface area B of the talc powder is 0.5~1.5m². 2 / g.

[0007] In the above technical solution, the polymer modifier includes at least one of styrene-butadiene-styrene copolymer, styrene-isoprene-styrene copolymer, styrene-butadiene rubber, isoprene rubber, chloroprene rubber, cis-butadiene rubber, and atactic polypropylene.

[0008] In the above technical solution, the polymer modifier of the first asphalt adhesive layer includes atactic polypropylene, and the polymer modifier of the second asphalt adhesive layer includes isoprene rubber.

[0009] In the above technical solution, the weight of the atactic polypropylene is greater than the weight of the isoprene rubber.

[0010] In the above technical solution, the softener includes at least one of naphthenic oil, aromatic oil, and paraffin oil.

[0011] In the above technical solution, the exposed weather-resistant film includes one of fluorocarbon film, polyethylene film, aluminum foil composite film, and polymer coating film.

[0012] In the above technical solution, the material of the fabric base layer includes at least one of polyester fiber, glass fiber, basalt fiber, polypropylene fiber, polyamide fiber, and regenerated cellulose fiber.

[0013] In the above technical solution, the material of the isolation layer includes one of the following: silicone-coated polyethylene film, polyethylene terephthalate film, mineral granules, fiber cloth, and silicone paper.

[0014] Compared with existing technologies, this invention provides an exposed interlocking waterproof membrane. Firstly, this invention investigates the penetration A (dmm) of petroleum asphalt and the specific surface area B (m²) of talc. 2 The influence of A / B on the weather resistance and overlap sealing reliability of waterproof membranes. This invention found that when 50 ≤ A / B ≤ 180, the asphalt adhesive layer possesses both wettability and cohesive strength. During construction, the adhesive can effectively impregnate the membrane and ensure that the talc powder is uniformly coated by the petroleum asphalt, forming a stable colloidal structure, significantly improving the weather resistance and overlap sealing reliability of the waterproof membrane. Within this range, it avoids both an excessively hard asphalt adhesive layer that is difficult to fully impregnate the fabric and exposed weather-resistant membrane, and an excessively soft asphalt adhesive layer that leads to accelerated aging of the exposed membrane.

[0015] Secondly, the ends of the roll material are prefabricated with interlocking open structures that can be interlocked. During construction, the interlocking structure can be directly used to achieve overlap and positioning, and with the bonding and sealing of the asphalt adhesive layer, no additional on-site treatment is required, which greatly improves construction efficiency. At the same time, the physical interlocking structure can resist the displacement caused by the thermal expansion and contraction of the roll material, preventing leakage from the overlap joint.

[0016] Furthermore, directly laminating the exposed weather-resistant membrane onto the exposed surface of the membrane eliminates the need for additional cement mortar or protective layers, simplifying the construction process. Simultaneously, the two layers of asphalt adhesive ensure a strong bond between the exposed weather-resistant membrane and the fabric substrate, preventing interlayer delamination and guaranteeing the long-term weather resistance and adhesion performance of the waterproof membrane. On the other hand, it can also participate in sealing the overlap joints; during interlocking overlaps, it can fuse and seal with the asphalt adhesive layers of adjacent membranes, forming a composite waterproof system and enhancing the overall reliability of the waterproofing. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of the interlocking waterproof membrane for exposed surfaces in the embodiments and comparative examples of the present invention; Figure 2 This is a schematic diagram of the interlocking joint of the waterproof membrane for exposed surfaces in the embodiments and comparative examples of the present invention.

[0019] In the diagram: 1. Exposed weather-resistant membrane; 2. First asphalt adhesive layer; 3. Fabric base layer; 4. Second asphalt adhesive layer; 5. Isolation layer; 6. Opening upper isolation membrane; 7. Opening lower isolation membrane. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention more apparent, the invention is described in detail below. It should be understood that the invention is not limited to the description herein.

[0021] Exposed weather-resistant membrane The exposed weathering membrane used in this invention is a known type of exposed weathering membrane that can be used in waterproof membranes, and this invention is not limited to the exposed weathering membranes listed below. As an example, the exposed weathering membrane can be one of fluorocarbon film, polyethylene film, aluminum foil composite film, or polymer coated film. In this invention, the exposed weathering membrane possesses excellent resistance to ultraviolet aging, ozone, and high and low temperatures, and can be directly exposed to the natural environment without an additional protective layer. It can effectively resist the erosion of the internal structure of the membrane by ultraviolet rays, rainwater, and alternating high and low temperatures.

[0022] First asphalt adhesive layer In this invention, the first asphalt adhesive layer is located between the exposed weather-resistant membrane and the fabric base layer, and has both bonding and sealing functions. On the one hand, it can achieve a firm composite between the exposed weather-resistant membrane and the fabric base layer; on the other hand, it provides initial bonding force for the interlocking joint.

[0023] Fabric base layer The fabric-based substrate used in this invention is a fabric-based substrate known in the art for use in waterproof membranes, and this invention is not limited to the fabric-based substrates listed below. As an example, the material of the fabric-based substrate can be at least one selected from polyester fiber, glass fiber, basalt fiber, polypropylene fiber, polyamide fiber, and regenerated cellulose fiber. As a reinforcing skeleton for the waterproof membrane, the fabric-based substrate can improve the tensile strength, tear resistance, and dimensional stability of the waterproof membrane, effectively resisting thermal expansion and contraction and external force damage during construction, thus preventing cracking and deformation of the waterproof membrane.

[0024] Second asphalt adhesive layer In this invention, the second asphalt adhesive layer is located between the fabric base layer and the isolation layer. It can work synergistically with the first asphalt adhesive layer to form a composite bonding system; it can also serve as the main functional layer for bonding the waterproof membrane to the base layer and as a sealing adhesive layer when the membrane overlaps.

[0025] isolation layer The isolation layer used in this invention is a known type of isolation layer for waterproof membranes, and this invention is not limited to the isolation layers listed below. As an example, the isolation layer material can be selected from one of the following: silicone-coated polyethylene film, polyethylene terephthalate film, mineral granules, and fiber cloth. In this invention, the isolation film prevents the second bitumen adhesive layers from adhering to each other during storage and transportation of the waterproof membrane.

[0026] Overlap opening In this invention, the ends of the waterproof membrane are pre-formed with interlocking openings. An upper release film is provided on the upper surface of the overlapping opening, and a lower release film is provided on the lower surface. During construction, after peeling off the upper and lower release films, they can be directly interlocked to form an interlocking overlap. This, combined with the adhesive seal of the asphalt adhesive layer, achieves a double waterproof seal. The upper and lower release films used in this invention are known in the art for use in waterproof membranes, and this invention is not limited to the upper and lower release films listed below. As an example, the material of the upper and lower release films can be selected from one of the following: silicone-coated polyethylene film, polyethylene terephthalate film, fiber cloth, and silicone paper.

[0027] The exposed interlocking waterproof membrane of the present invention comprises, from top to bottom, an exposed weather-resistant membrane, a first asphalt adhesive layer, a fabric base layer, a second asphalt adhesive layer, and a release layer; one end of the first asphalt adhesive layer is provided with an overlap opening, the upper surface of the overlap opening is provided with an upper release membrane, and the lower surface of the overlap opening is provided with a lower release membrane. The first and second asphalt adhesive layers each independently comprise the following components by weight: 50 parts petroleum asphalt, 6-10 parts polymer modifier, 4-8 parts softener, and 20-30 parts talc powder; the penetration A of petroleum asphalt at 25℃, under a 100g load, and within 5s satisfies the following relationship with the specific surface area B of talc powder: 50≤A / B≤180. Where, the unit of penetration A is dmm, and the unit of specific surface area B is m². 2 / g.

[0028] In this invention, the penetration A of petroleum asphalt at 25°C, under a 100g load, and within 5 seconds is 60~100dmm.

[0029] In this invention, the specific surface area B of the talc powder is 0.5~1.5m². 2 / g.

[0030] In this invention, the polymer modifier includes at least one of styrene-butadiene-styrene copolymer, styrene-isoprene-styrene copolymer, styrene-butadiene rubber, isoprene rubber, chloroprene rubber, cis-butadiene rubber, and atactic polypropylene.

[0031] In this invention, the polymer modifier of the first asphalt adhesive layer includes atactic polypropylene, and the polymer modifier of the second asphalt adhesive layer includes isoprene rubber.

[0032] In this invention, when the first asphalt adhesive layer is made of atactic polypropylene and the second asphalt adhesive layer is made of isoprene rubber, the two can form a synergistic reinforcing network at the overlapping interface: the atactic polypropylene provides skeletal support to resist shear slip, and the isoprene rubber provides elastic buffering to suppress stress concentration. Through the synergistic effect of the two, the overall shear performance of the waterproof membrane overlap joint can be further improved, ensuring the reliability of the overlap seal under complex working conditions such as wind load and thermal expansion and contraction.

[0033] In this invention, the weight of atactic polypropylene is greater than that of isoprene rubber. The inventors have discovered that when the weight of atactic polypropylene is greater than that of isoprene rubber, the overall shear strength of the waterproof membrane overlap joint can be further improved.

[0034] In this invention, the softener includes at least one of naphthenic oil, aromatic oil, and paraffin oil.

[0035] In this invention, the exposed weather-resistant film includes one of the following: fluorocarbon film, polyethylene film, aluminum foil composite film, and polymer coating film.

[0036] In this invention, the material of the fabric base layer includes at least one of polyester fiber, glass fiber, basalt fiber, polypropylene fiber, polyamide fiber, and regenerated cellulose fiber.

[0037] In this invention, the material of the isolation layer includes one of the following: silicone-coated polyethylene film, polyethylene terephthalate film, mineral granules, fiber cloth, and silicone paper.

[0038] To further illustrate the present invention, detailed descriptions will be provided below through the following embodiments. The raw materials used in the following embodiments and comparative examples of the present invention are all commercially available products. Specifically, the weight-average molecular weight of atactic polypropylene is 8880; the weight-average molecular weight of styrene-butadiene-styrene copolymer is 100000; the weight-average molecular weight of styrene-isoprene-styrene copolymer is 54000; the weight-average molecular weight of styrene-butadiene rubber is 200000; the weight-average molecular weight of cis-butadiene rubber is 203000; the weight-average molecular weight of isoprene rubber is 1444000; and the relative spectral irradiance of the exposed weather-resistant polyethylene film at 340 nm is 0.5 W / (m²). 2 The test was conducted under the following conditions: continuous irradiation for 1200 hours, with borosilicate glass inner and outer filters, a black standard thermometer temperature of 65℃, a chamber temperature of 40℃, a relative humidity of 50%, and a water spraying cycle of 18 minutes of spraying followed by 102 minutes of rest. The longitudinal elongation at break after aging was 200%.

[0039] In the following embodiments and comparative examples, the structure of the exposed interlocking waterproof membrane is as follows: Figure 1 As shown, the waterproof membrane, from top to bottom, includes an exposed weather-resistant membrane, a first bitumen adhesive layer, a fabric-based base layer, a second bitumen adhesive layer, and a release layer; one end of the first bitumen adhesive layer has an overlap opening, the upper surface of the overlap opening has an upper release film, and the lower surface of the overlap opening has a lower release film. Figure 2 As shown, the waterproof membrane of the present invention adopts an overlapping and interlocking construction method when it is constructed. When laying adjacent membranes, the non-overlapping open end of one waterproof membrane is interlocked with the overlapping open end of another waterproof membrane. After peeling off the upper and lower isolation films of the opening, the interlocking surfaces are pressed with a pressure roller to make them tightly bonded.

[0040] Example 1 A method for preparing an exposed interlocking waterproof membrane includes the following steps: S1. By weight, heat and stir 50 parts of 70# petroleum asphalt (with a penetration of 70 dmm within 5 seconds under 100g load at 25℃) to 180℃, add 6 parts of styrene-butadiene-styrene copolymer and stir, then add 4 parts of naphthenic oil and 20 parts of talc powder (specific surface area 1.4 m²) sequentially. 2 The asphalt adhesive layer slurry was obtained by stirring at a shear rate of 600 r / min for 30 min and then set aside at 170℃. S2. By weight, heat and stir 50 parts of 70# petroleum asphalt (with a penetration of 70 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 6 parts of butadiene rubber and stir, then add 4 parts of naphthenic oil and 20 parts of talc powder (specific surface area 1.4m²) in sequence. 2 The mixture (g) was stirred at a shear rate of 600 r / min for 30 min to obtain the second asphalt adhesive layer slurry, which was then stored at 170℃ for later use. S3. Following the order from top to bottom: exposed weather-resistant membrane, first asphalt adhesive layer, fabric base layer, second asphalt adhesive layer, and release layer, apply the following to a 0.6mm thick polyester fabric base layer (unit area mass 100g / m²). 2 The upper side of the polyester fabric base layer is coated with a first asphalt adhesive slurry to form a first asphalt adhesive layer with a thickness of 0.5 mm. A polyethylene exposed weather-resistant film with a thickness of 0.2 mm is laminated on the first asphalt adhesive layer. The lower side of the polyester fabric base layer is coated with a second asphalt adhesive slurry to form a second asphalt adhesive layer with a thickness of 0.8 mm. A silicone paper with a thickness of 0.1 mm is laminated on the other side of the second asphalt adhesive layer to form an isolation layer. An overlap opening is provided at one end of the second asphalt adhesive layer. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the upper surface of the overlap opening as an upper isolation film for the opening. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the lower surface of the overlap opening as a lower isolation film for the opening, thus obtaining an exposed interlocking waterproof membrane.

[0041] Example 2 A method for preparing an exposed interlocking waterproof membrane includes the following steps: S1. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 10 parts of atactic polypropylene and stir, then add 8 parts of naphthenic oil and 30 parts of talc powder (with a specific surface area of ​​0.5m²) in sequence. 2 The asphalt adhesive layer slurry was obtained by stirring at a shear rate of 600 r / min for 30 min and then set aside at 170℃. S2. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 10 parts of butadiene rubber and stir, then add 8 parts of naphthenic oil and 30 parts of talc powder (with a specific surface area of ​​0.5m²). 2 The mixture (g) was stirred at a shear rate of 600 r / min for 30 min to obtain the second asphalt adhesive layer slurry, which was then stored at 170℃ for later use. S3. Following the order from top to bottom: exposed weather-resistant membrane, first asphalt adhesive layer, fabric base layer, second asphalt adhesive layer, and release layer, apply the following to a 0.6mm thick polyester fabric base layer (80g / m²). 2The upper side of the polyester fabric base layer is coated with a first asphalt adhesive slurry to form a first asphalt adhesive layer with a thickness of 0.4 mm. A polyethylene exposed weather-resistant membrane with a thickness of 0.2 mm is laminated on the first asphalt adhesive layer. The lower side of the polyester fabric base layer is coated with a second asphalt adhesive slurry to form a second asphalt adhesive layer with a thickness of 0.6 mm. A silicone-coated polyethylene membrane with a thickness of 0.08 mm is laminated on the other side of the second asphalt adhesive layer to form an isolation layer. An overlap opening is provided at one end of the second asphalt adhesive layer. A silicone-coated polyethylene membrane with a thickness of 0.06 mm is laminated on the upper surface of the overlap opening as an upper isolation membrane for the opening. A silicone-coated polyethylene membrane with a thickness of 0.06 mm is laminated on the lower surface of the overlap opening as a lower isolation membrane for the opening, thus obtaining an exposed interlocking waterproof membrane.

[0042] Example 3 A method for preparing an exposed interlocking waterproof membrane includes the following steps: S1. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of styrene-butadiene-styrene copolymer and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) sequentially. 2 The asphalt adhesive layer slurry was obtained by stirring at a shear rate of 600 r / min for 30 min and then set aside at 170℃. S2. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of butadiene rubber and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The mixture (g) was stirred at a shear rate of 600 r / min for 30 min to obtain the second asphalt adhesive layer slurry, which was then stored at 170℃ for later use. S3. Following the order from top to bottom: exposed weather-resistant membrane, first asphalt adhesive layer, fabric base layer, second asphalt adhesive layer, and release layer, apply the following to a 0.6mm thick polyester fabric base layer (unit area mass 100g / m²). 2 The upper side of the polyester fabric base layer is coated with a first asphalt adhesive slurry to form a first asphalt adhesive layer with a thickness of 0.5 mm. A polyethylene exposed weather-resistant film with a thickness of 0.2 mm is laminated on the first asphalt adhesive layer. The lower side of the polyester fabric base layer is coated with a second asphalt adhesive slurry to form a second asphalt adhesive layer with a thickness of 0.8 mm. A silicone paper with a thickness of 0.1 mm is laminated on the other side of the second asphalt adhesive layer to form an isolation layer. An overlap opening is provided at one end of the second asphalt adhesive layer. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the upper surface of the overlap opening as an upper isolation film for the opening. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the lower surface of the overlap opening as a lower isolation film for the opening, thus obtaining an exposed interlocking waterproof membrane.

[0043] Example 4 A method for preparing an exposed interlocking waterproof membrane includes the following steps: S1. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of styrene-isoprene-styrene copolymer and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) sequentially. 2 The asphalt adhesive layer slurry was obtained by stirring at a shear rate of 600 r / min for 30 min and then set aside at 170℃. S2. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of styrene-butadiene rubber and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The mixture (g) was stirred at a shear rate of 600 r / min for 30 min to obtain the second asphalt adhesive layer slurry, which was then stored at 170℃ for later use. S3. Following the order from top to bottom: exposed weather-resistant membrane, first asphalt adhesive layer, fabric base layer, second asphalt adhesive layer, and release layer, apply the following to a 0.6mm thick polyester fabric base layer (unit area mass 100g / m²). 2 The upper side of the polyester fabric base layer is coated with a first asphalt adhesive slurry to form a first asphalt adhesive layer with a thickness of 0.5 mm. A polyethylene exposed weather-resistant film with a thickness of 0.2 mm is laminated on the first asphalt adhesive layer. The lower side of the polyester fabric base layer is coated with a second asphalt adhesive slurry to form a second asphalt adhesive layer with a thickness of 0.8 mm. A silicone paper with a thickness of 0.1 mm is laminated on the other side of the second asphalt adhesive layer to form an isolation layer. An overlap opening is provided at one end of the second asphalt adhesive layer. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the upper surface of the overlap opening as an upper isolation film for the opening. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the lower surface of the overlap opening as a lower isolation film for the opening, thus obtaining an exposed interlocking waterproof membrane.

[0044] Example 5 A method for preparing an exposed interlocking waterproof membrane includes the following steps: S1. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of atactic polypropylene and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The asphalt adhesive layer slurry was obtained by stirring at a shear rate of 600 r / min for 30 min and then set aside at 170℃. S2. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of styrene-butadiene rubber and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The mixture (g) was stirred at a shear rate of 600 r / min for 30 min to obtain the second asphalt adhesive layer slurry, which was then stored at 170℃ for later use. S3. Following the order from top to bottom: exposed weather-resistant membrane, first asphalt adhesive layer, fabric base layer, second asphalt adhesive layer, and release layer, apply the following to a 0.6mm thick polyester fabric base layer (unit area mass 100g / m²). 2 The upper side of the polyester fabric base layer is coated with a first asphalt adhesive slurry to form a first asphalt adhesive layer with a thickness of 0.5 mm. A polyethylene exposed weather-resistant film with a thickness of 0.2 mm is laminated on the first asphalt adhesive layer. The lower side of the polyester fabric base layer is coated with a second asphalt adhesive slurry to form a second asphalt adhesive layer with a thickness of 0.8 mm. A silicone paper with a thickness of 0.1 mm is laminated on the other side of the second asphalt adhesive layer to form an isolation layer. An overlap opening is provided at one end of the second asphalt adhesive layer. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the upper surface of the overlap opening as an upper isolation film for the opening. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the lower surface of the overlap opening as a lower isolation film for the opening, thus obtaining an exposed interlocking waterproof membrane.

[0045] Example 6 A method for preparing an exposed interlocking waterproof membrane includes the following steps: S1. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of atactic polypropylene and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The asphalt adhesive layer slurry was obtained by stirring at a shear rate of 600 r / min for 30 min and then set aside at 170℃. S2. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of butadiene rubber and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The mixture (g) was stirred at a shear rate of 600 r / min for 30 min to obtain the second asphalt adhesive layer slurry, which was then stored at 170℃ for later use. S3. Following the order from top to bottom: exposed weather-resistant membrane, first asphalt adhesive layer, fabric base layer, second asphalt adhesive layer, and release layer, apply the following to a 0.6mm thick polyester fabric base layer (unit area mass 100g / m²).2 The upper side of the polyester fabric base layer is coated with a first asphalt adhesive slurry to form a first asphalt adhesive layer with a thickness of 0.5 mm. A polyethylene exposed weather-resistant film with a thickness of 0.2 mm is laminated on the first asphalt adhesive layer. The lower side of the polyester fabric base layer is coated with a second asphalt adhesive slurry to form a second asphalt adhesive layer with a thickness of 0.8 mm. A silicone paper with a thickness of 0.1 mm is laminated on the other side of the second asphalt adhesive layer to form an isolation layer. An overlap opening is provided at one end of the second asphalt adhesive layer. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the upper surface of the overlap opening as an upper isolation film for the opening. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the lower surface of the overlap opening as a lower isolation film for the opening, thus obtaining an exposed interlocking waterproof membrane.

[0046] Example 7 A method for preparing an exposed interlocking waterproof membrane includes the following steps: S1. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of styrene-isoprene-styrene copolymer and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) sequentially. 2 The asphalt adhesive layer slurry was obtained by stirring at a shear rate of 600 r / min for 30 min and then set aside at 170℃. S2. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of isoprene rubber and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The mixture (g) was stirred at a shear rate of 600 r / min for 30 min to obtain the second asphalt adhesive layer slurry, which was then stored at 170℃ for later use. S3. Following the order from top to bottom: exposed weather-resistant membrane, first asphalt adhesive layer, fabric base layer, second asphalt adhesive layer, and release layer, apply the following to a 0.6mm thick polyester fabric base layer (unit area mass 100g / m²). 2The upper side of the polyester fabric base layer is coated with a first asphalt adhesive slurry to form a first asphalt adhesive layer with a thickness of 0.5 mm. A polyethylene exposed weather-resistant film with a thickness of 0.2 mm is laminated on the first asphalt adhesive layer. The lower side of the polyester fabric base layer is coated with a second asphalt adhesive slurry to form a second asphalt adhesive layer with a thickness of 0.8 mm. A silicone paper with a thickness of 0.1 mm is laminated on the other side of the second asphalt adhesive layer to form an isolation layer. An overlap opening is provided at one end of the second asphalt adhesive layer. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the upper surface of the overlap opening as an upper isolation film for the opening. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the lower surface of the overlap opening as a lower isolation film for the opening, thus obtaining an exposed interlocking waterproof membrane.

[0047] Example 8 A method for preparing an exposed interlocking waterproof membrane includes the following steps: S1. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of styrene-butadiene-styrene copolymer and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) sequentially. 2 The asphalt adhesive layer slurry was obtained by stirring at a shear rate of 600 r / min for 30 min and then set aside at 170℃. S2. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of isoprene rubber and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The mixture (g) was stirred at a shear rate of 600 r / min for 30 min to obtain the second asphalt adhesive layer slurry, which was then stored at 170℃ for later use. S3. Following the order from top to bottom: exposed weather-resistant membrane, first asphalt adhesive layer, fabric base layer, second asphalt adhesive layer, and release layer, apply the following to a 0.6mm thick polyester fabric base layer (unit area mass 100g / m²). 2 The upper side of the polyester fabric base layer is coated with a first asphalt adhesive slurry to form a first asphalt adhesive layer with a thickness of 0.5 mm. A polyethylene exposed weather-resistant film with a thickness of 0.2 mm is laminated on the first asphalt adhesive layer. The lower side of the polyester fabric base layer is coated with a second asphalt adhesive slurry to form a second asphalt adhesive layer with a thickness of 0.8 mm. A silicone paper with a thickness of 0.1 mm is laminated on the other side of the second asphalt adhesive layer to form an isolation layer. An overlap opening is provided at one end of the second asphalt adhesive layer. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the upper surface of the overlap opening as an upper isolation film for the opening. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the lower surface of the overlap opening as a lower isolation film for the opening, thus obtaining an exposed interlocking waterproof membrane.

[0048] Example 9 A method for preparing an exposed interlocking waterproof membrane includes the following steps: S1. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of atactic polypropylene and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The asphalt adhesive layer slurry was obtained by stirring at a shear rate of 600 r / min for 30 min and then set aside at 170℃. S2. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 8 parts of isoprene rubber and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The mixture (g) was stirred at a shear rate of 600 r / min for 30 min to obtain the second asphalt adhesive layer slurry, which was then stored at 170℃ for later use. S3. Following the order from top to bottom: exposed weather-resistant membrane, first asphalt adhesive layer, fabric base layer, second asphalt adhesive layer, and release layer, apply the following to a 0.6mm thick polyester fabric base layer (unit area mass 100g / m²). 2 The upper side of the polyester fabric base layer is coated with a first asphalt adhesive slurry to form a first asphalt adhesive layer with a thickness of 0.5 mm. A polyethylene exposed weather-resistant film with a thickness of 0.2 mm is laminated on the first asphalt adhesive layer. The lower side of the polyester fabric base layer is coated with a second asphalt adhesive slurry to form a second asphalt adhesive layer with a thickness of 0.8 mm. A silicone paper with a thickness of 0.1 mm is laminated on the other side of the second asphalt adhesive layer to form an isolation layer. An overlap opening is provided at one end of the second asphalt adhesive layer. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the upper surface of the overlap opening as an upper isolation film for the opening. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the lower surface of the overlap opening as a lower isolation film for the opening, thus obtaining an exposed interlocking waterproof membrane.

[0049] Example 10 A method for preparing an exposed interlocking waterproof membrane includes the following steps: S1. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 6 parts of atactic polypropylene and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The asphalt adhesive layer slurry was obtained by stirring at a shear rate of 600 r / min for 30 min and then set aside at 170℃. S2. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 10 parts of isoprene rubber and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The mixture (g) was stirred at a shear rate of 600 r / min for 30 min to obtain the second asphalt adhesive layer slurry, which was then stored at 170℃ for later use. S3. Following the order from top to bottom: exposed weather-resistant membrane, first asphalt adhesive layer, fabric base layer, second asphalt adhesive layer, and release layer, apply the following to a 0.6mm thick polyester fabric base layer (unit area mass 100g / m²). 2 The upper side of the polyester fabric base layer is coated with a first asphalt adhesive slurry to form a first asphalt adhesive layer with a thickness of 0.5 mm. A polyethylene exposed weather-resistant film with a thickness of 0.2 mm is laminated on the first asphalt adhesive layer. The lower side of the polyester fabric base layer is coated with a second asphalt adhesive slurry to form a second asphalt adhesive layer with a thickness of 0.8 mm. A silicone paper with a thickness of 0.1 mm is laminated on the other side of the second asphalt adhesive layer to form an isolation layer. An overlap opening is provided at one end of the second asphalt adhesive layer. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the upper surface of the overlap opening as an upper isolation film for the opening. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the lower surface of the overlap opening as a lower isolation film for the opening, thus obtaining an exposed interlocking waterproof membrane.

[0050] Example 11 A method for preparing an exposed interlocking waterproof membrane includes the following steps: S1. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 10 parts of atactic polypropylene and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The asphalt adhesive layer slurry was obtained by stirring at a shear rate of 600 r / min for 30 min and then set aside at 170℃. S2. By weight, heat and stir 50 parts of 90# petroleum asphalt (with a penetration of 90 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 6 parts of isoprene rubber and stir, then add 6 parts of naphthenic oil and 25 parts of talc powder (specific surface area 1.5m²) in sequence. 2 The mixture (g) was stirred at a shear rate of 600 r / min for 30 min to obtain the second asphalt adhesive layer slurry, which was then stored at 170℃ for later use. S3. Following the order from top to bottom: exposed weather-resistant membrane, first asphalt adhesive layer, fabric base layer, second asphalt adhesive layer, and release layer, apply the following to a 0.6mm thick polyester fabric base layer (unit area mass 100g / m²).2 The upper side of the polyester fabric base layer is coated with a first asphalt adhesive slurry to form a first asphalt adhesive layer with a thickness of 0.5 mm. A polyethylene exposed weather-resistant film with a thickness of 0.2 mm is laminated on the first asphalt adhesive layer. The lower side of the polyester fabric base layer is coated with a second asphalt adhesive slurry to form a second asphalt adhesive layer with a thickness of 0.8 mm. A silicone paper with a thickness of 0.1 mm is laminated on the other side of the second asphalt adhesive layer to form an isolation layer. An overlap opening is provided at one end of the second asphalt adhesive layer. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the upper surface of the overlap opening as an upper isolation film for the opening. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the lower surface of the overlap opening as a lower isolation film for the opening, thus obtaining an exposed interlocking waterproof membrane.

[0051] Comparative Example 1 A method for preparing an exposed interlocking waterproof membrane includes the following steps: S1. By weight, heat and stir 50 parts of 70# petroleum asphalt (with a penetration of 70 dmm within 5 seconds under 100g load at 25℃) to 180℃, add 6 parts of styrene-butadiene-styrene copolymer and stir, then add 4 parts of naphthenic oil and 20 parts of talc powder (specific surface area 2m²) in sequence. 2 The asphalt adhesive layer slurry was obtained by stirring at a shear rate of 600 r / min for 30 min and then set aside at 170℃. S2. By weight, heat and stir 50 parts of 70# petroleum asphalt (with a penetration of 70 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 6 parts of butadiene rubber and stir, then add 4 parts of naphthenic oil and 20 parts of talc powder (specific surface area 1.4m²) in sequence. 2 The mixture (g) was stirred at a shear rate of 600 r / min for 30 min to obtain the second asphalt adhesive layer slurry, which was then stored at 170℃ for later use. S3. Following the order from top to bottom: exposed weather-resistant membrane, first asphalt adhesive layer, fabric base layer, second asphalt adhesive layer, and release layer, apply the following to a 0.6mm thick polyester fabric base layer (unit area mass 100g / m²). 2 The upper side of the polyester fabric base layer is coated with a first asphalt adhesive slurry to form a first asphalt adhesive layer with a thickness of 0.5 mm. A polyethylene exposed weather-resistant film with a thickness of 0.2 mm is laminated on the first asphalt adhesive layer. The lower side of the polyester fabric base layer is coated with a second asphalt adhesive slurry to form a second asphalt adhesive layer with a thickness of 0.8 mm. A silicone paper with a thickness of 0.1 mm is laminated on the other side of the second asphalt adhesive layer to form an isolation layer. An overlap opening is provided at one end of the second asphalt adhesive layer. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the upper surface of the overlap opening as an upper isolation film for the opening. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the lower surface of the overlap opening as a lower isolation film for the opening, thus obtaining an exposed interlocking waterproof membrane.

[0052] Comparative Example 2 A method for preparing an exposed interlocking waterproof membrane includes the following steps: S1. By weight, heat and stir 50 parts of 70# petroleum asphalt (with a penetration of 70 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 6 parts of styrene-butadiene-styrene copolymer and stir, then add 4 parts of naphthenic oil and 20 parts of talc powder (specific surface area 0.3m²) sequentially. 2 The asphalt adhesive layer slurry was obtained by stirring at a shear rate of 600 r / min for 30 min and then set aside at 170℃. S2. By weight, heat and stir 50 parts of 70# petroleum asphalt (with a penetration of 70 dmm within 5 seconds under a 100g load at 25℃) to 180℃, add 6 parts of butadiene rubber and stir, then add 4 parts of naphthenic oil and 20 parts of talc powder (specific surface area 1.4m²) in sequence. 2 The mixture (g) was stirred at a shear rate of 600 r / min for 30 min to obtain the second asphalt adhesive layer slurry, which was then stored at 170℃ for later use. S3. Following the order from top to bottom: exposed weather-resistant membrane, first asphalt adhesive layer, fabric base layer, second asphalt adhesive layer, and release layer, apply the following to a 0.6mm thick polyester fabric base layer (unit area mass 100g / m²). 2 The upper side of the polyester fabric base layer is coated with a first asphalt adhesive slurry to form a first asphalt adhesive layer with a thickness of 0.5 mm. A polyethylene exposed weather-resistant film with a thickness of 0.2 mm is laminated on the first asphalt adhesive layer. The lower side of the polyester fabric base layer is coated with a second asphalt adhesive slurry to form a second asphalt adhesive layer with a thickness of 0.8 mm. A silicone paper with a thickness of 0.1 mm is laminated on the other side of the second asphalt adhesive layer to form an isolation layer. An overlap opening is provided at one end of the second asphalt adhesive layer. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the upper surface of the overlap opening as an upper isolation film for the opening. A silicone-coated polyethylene film with a thickness of 0.06 mm is laminated on the lower surface of the overlap opening as a lower isolation film for the opening, thus obtaining an exposed interlocking waterproof membrane.

[0053] Experiment Example 1 Weather Resistance Test Referring to GB / T 18244-2022, the tensile strength retention rate R of the waterproof membranes in Examples 1-3 and Comparative Examples 1-2 after xenon arc lamp aging under 02 m dry conditions for 2574 h was calculated as follows: R (%) = T1 / T × 100, where T1 is the tensile strength of the specimen after treatment, and T is the tensile strength of the specimen stored in a dark room at the same age as the treated specimen. The test results are shown in Table 1 below.

[0054] Table 1 Weathering resistance test results

[0055] A comparison of Example 1 and Comparative Examples 1-2 shows that when the penetration A (dmm) of petroleum asphalt and the specific surface area B (m²) of talc powder are different, the results are more consistent. 2 When the ratio of A / B to water content (g) is 50 ≤ A / B ≤ 180, the weather resistance of the waterproof membrane can be significantly improved.

[0056] Experiment Example 2: Shear Performance Test under Overlapping Engagement Conditions The shear properties of Examples 1-11 and Comparative Examples 1-2 under lapped interlocking conditions (lap width 80 mm) were tested according to GB / T 328.22-2007. The test temperature was 23℃, the tensile speed was 100 mm / min, and the units were converted to N / mm. The results were rounded to one decimal place. The test results are shown in Table 2 below.

[0057] Table 2. Mechanical performance test results under lapped interlocking state

[0058] A comparison of Example 1 and Comparative Examples 1-2 shows that when the penetration A (dmm) of petroleum asphalt and the specific surface area B (m²) of talc powder are different, the results are more consistent. 2 When the ratio of A / B to the overlap of the waterproof membrane (g) is 50 ≤ A / B ≤ 180, the shear performance of the overlap can be significantly improved, preventing interlayer separation and thus effectively ensuring the reliability of the overlap seal. A comparison between Examples 9-11 and Examples 3-10 shows that when atactic polypropylene is used as the first bitumen adhesive layer and isoprene rubber is used as the second bitumen adhesive layer, the shear performance of the overlap joint of the waterproof membrane can be further improved, ensuring the reliability of the overlap seal under complex conditions such as wind load and thermal expansion and contraction.

[0059] Experiment Example 3: Thermal Expansion and Contraction Cycle Test The waterproof membranes of Examples 1-11 were subjected to a thermal expansion and contraction cycle test within the range of -25℃ to 100℃ (the samples were first placed at -25℃ for 1 hour, and then at -100℃ for 1 hour, which constituted one cycle), with 100 cycles. The results showed that the waterproof membrane of the present invention had no seams and no leakage.

[0060] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An exposed interlocking waterproof membrane, characterized in that, From top to bottom, it includes an exposed weather-resistant membrane, a first asphalt adhesive layer, a fabric base layer, a second asphalt adhesive layer, and a release layer; one end of the first asphalt adhesive layer is provided with an overlap opening, the upper surface of the overlap opening is provided with an upper release film, and the lower surface of the overlap opening is provided with a lower release film. The first and second asphalt adhesive layers each independently comprise the following components by weight: 50 parts petroleum asphalt, 6-10 parts polymer modifier, 4-8 parts softener, and 20-30 parts talc powder; the penetration A of the petroleum asphalt at 25°C, under a 100g load, and within 5 seconds and the specific surface area B of the talc powder satisfy the following relationship: 50 ≤ A / B ≤ 180. Wherein, the unit of penetration A is dmm, and the unit of specific surface area B is m. 2 / g.

2. The exposed interlocking waterproof membrane according to claim 1, characterized in that, The penetration A of the petroleum asphalt at 25°C, under a 100g load, and within 5 seconds is 60~100dmm.

3. The exposed interlocking waterproof membrane according to claim 1, characterized in that, The specific surface area B of the talc powder is 0.5~1.5m². 2 / g.

4. The exposed interlocking waterproof membrane according to claim 1, characterized in that, The polymer modifier includes at least one of styrene-butadiene-styrene copolymer, styrene-isoprene-styrene copolymer, styrene-butadiene rubber, isoprene rubber, chloroprene rubber, cis-butadiene rubber, and atactic polypropylene.

5. The exposed interlocking waterproof membrane according to claim 4, characterized in that, The polymer modifier of the first asphalt adhesive layer includes atactic polypropylene, and the polymer modifier of the second asphalt adhesive layer includes isoprene rubber.

6. The exposed interlocking waterproof membrane according to claim 5, characterized in that, The weight of the atactic polypropylene is greater than the weight of the isoprene rubber.

7. The exposed interlocking waterproof membrane according to claim 1, characterized in that, The softener includes at least one of naphthenic oil, aromatic oil, and paraffin oil.

8. The exposed interlocking waterproof membrane according to claim 1, characterized in that, The exposed weather-resistant film includes one of the following: fluorocarbon film, polyethylene film, aluminum foil composite film, and polymer coating film.

9. The exposed interlocking waterproof membrane according to claim 1, characterized in that, The material of the fabric base layer includes at least one of polyester fiber, glass fiber, basalt fiber, polypropylene fiber, polyamide fiber, and regenerated cellulose fiber.

10. The exposed interlocking waterproof membrane according to claim 1, characterized in that, The material of the isolation layer includes one of the following: silicone-coated polyethylene film, polyethylene terephthalate film, mineral granules, fiber cloth, and silicone paper.

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