Tyre-free self-adhesive modified asphalt waterproof coiled material with aluminum foil surface

Abstract

The embodiment of the utility model discloses a tire-free self-adhesive modified asphalt waterproof coiled material with an aluminum foil surface. Comprising a first self-adhesive asphalt layer, a second self-adhesive asphalt layer, a polymer middle layer arranged between the first self-adhesive asphalt layer and the second self-adhesive asphalt layer, and an aluminum foil layer arranged on the surface, opposite to the polymer middle layer, of the first self-adhesive asphalt layer, and the protective coating is arranged on the aluminum foil layer.

Description

Technical Field

[0001] This utility model relates to the field of building materials, and in particular to an aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane. Background Technology

[0002] Aluminum foil-faced self-adhesive bitumen waterproof membrane is a waterproof membrane with self-adhesive properties, made from high-molecular resin and high-quality bitumen as the base material and aluminum foil as the surface material, processed through a special process. It features excellent waterproof performance, strong self-adhesion, high temperature resistance, UV resistance, lightweight, easy handling, and environmental friendliness, making it widely used in various waterproofing projects such as building roofs and basements, tunnels and bridges, water conservancy projects, and pipeline corrosion protection.

[0003] Although aluminum foil-faced self-adhesive bitumen waterproof membranes have many advantages, currently commercially available aluminum foil-faced self-adhesive bitumen waterproof membranes are all simply a combination of aluminum foil and bitumen, thus having some disadvantages, such as:

[0004] (1) The aluminum foil used is ordinary aluminum foil. Ordinary aluminum foil is not resistant to acids and alkalis and is easily oxidized in a humid environment, resulting in severe corrosion of the aluminum foil and the weather resistance of the product cannot be guaranteed.

[0005] (2) The elongation rate of aluminum foil is only 2% to 10%. After the roll material is installed, the stress and deformation of the building will cause the aluminum foil to break, or the aluminum foil will be punctured / broken by foreign objects, and the waterproof function of the product cannot be guaranteed.

[0006] (3) After the roll products made from ordinary aluminum foil are unrolled, the surface of the product is severely wrinkled. During construction, water channels are easily formed at the short side overlaps, which can lead to water leakage in the house.

[0007] (4) Aluminum foil is a material with good thermal conductivity. When asphalt and aluminum foil are directly bonded, the asphalt is prone to flow and drip under high ambient temperature, which will damage the structure of the roll material.

[0008] (5) There are no applicable standards for this type of product in the market, resulting in inconsistent product quality and generally poor quality.

[0009] Therefore, as a new type of waterproof material, aluminum foil-faced non-woven self-adhesive bitumen waterproof membrane has profound practical significance in researching and developing its performance and service life, and establishing industry standards to meet the higher requirements of building engineering for waterproof materials. Utility Model Content

[0010] In view of this, the present invention provides an aluminum foil-faced non-woven self-adhesive modified bitumen waterproof membrane, comprising a first self-adhesive bitumen layer and a second self-adhesive bitumen layer; a polymer intermediate layer disposed between the first self-adhesive bitumen layer and the second self-adhesive bitumen layer; an aluminum foil layer disposed on the surface of the first self-adhesive bitumen layer opposite to the polymer intermediate layer; and a protective coating disposed on the aluminum foil layer.

[0011] According to some embodiments of the present invention, the surface of the aluminum foil layer has an embossed pattern.

[0012] According to some embodiments of this utility model, the depth of the embossed pattern is less than 2mm.

[0013] According to some embodiments of this utility model, the embossed pattern consists of multiple evenly distributed quadrilaterals.

[0014] According to some embodiments of this utility model, the spacing between each quadrilateral is 0.5-10mm, and the side length of each quadrilateral is 1-50mm.

[0015] According to some embodiments of this utility model, the area of ​​the embossed pattern accounts for 70%-100% of the surface area of ​​the aluminum foil layer.

[0016] According to some embodiments of the present invention, the aluminum foil-faced non-woven self-adhesive modified bitumen waterproof membrane further includes an isolation base film located on the surface opposite to the polymer intermediate layer of the second self-adhesive bitumen layer, and an isolation edge film located at the edge of the aluminum foil layer and the protective coating.

[0017] According to some embodiments of this utility model, the width of the isolation side film is 50-250mm and the thickness is 5-50μm; the width of the isolation bottom film is 800-1200mm and the thickness is 5-50μm.

[0018] According to some embodiments of this utility model, the protective coating is a polyester coating or a fluorocarbon coating.

[0019] According to some embodiments of this utility model, the tensile strength of the aluminum foil-faced non-woven self-adhesive modified bitumen waterproof membrane is greater than 400 N / 50 mm; the elongation at break of the polymer intermediate layer is greater than 220%; and the softening point of the first bitumen layer and the second bitumen layer is greater than 88°C.

[0020] Based on the above technical solution, the present invention has at least one or a part of the following beneficial effects:

[0021] (1) In the embodiments of this utility model, the aluminum foil layer with protective coating and embossed pattern can, on the one hand, isolate the aluminum foil-faced self-adhesive modified bitumen waterproof membrane from contact with acid, alkali and oxygen, avoid the aluminum foil from being oxidized and corroded, and improve the exposure life of the aluminum foil-faced self-adhesive modified bitumen waterproof membrane; on the other hand, it effectively releases the stress generated when unwinding the aluminum foil-faced self-adhesive modified bitumen waterproof membrane during production, and avoids the formation of water channels when the aluminum foil-faced self-adhesive modified bitumen waterproof membrane has deep wrinkles and short side overlaps, thus ensuring the waterproof function of the product.

[0022] (2) In the embodiments of this utility model, the polymer intermediate layer and the aluminum foil layer work together to improve the mechanical properties of the aluminum foil-faced self-adhesive modified bitumen waterproof membrane, effectively reducing the aluminum foil breakage problem caused by stress generated by the building structure and changes in the building structure. Even if the aluminum foil breaks, the membrane can still serve as a second waterproof layer. As long as the aluminum foil does not fall off the bitumen, the final product still has excellent exposed weather resistance and waterproof function.

[0023] (3) In the embodiments of this utility model, the first self-adhesive asphalt layer and the second self-adhesive asphalt layer have high softening points. When combined with the aluminum foil layer, they can effectively prevent the asphalt from slipping, flowing, or dripping in high-temperature (greater than 70°C) environments. This ensures that the aluminum foil-faced self-adhesive modified asphalt waterproof membrane can be applied to slope construction, and the membrane will not gradually slip and detach from the slope. Attached Figure Description

[0024] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:

[0025] Figure 1 This is a cross-sectional structural diagram of an aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the embossed structure of the aluminum foil surface of an aluminum foil-faced self-adhesive modified bitumen waterproof membrane according to an embodiment of the present invention.

[0027] [Explanation of Labels in the Attached Image]

[0028] 01-Isolation base film; 02-Second self-adhesive asphalt layer; 03-Polymer intermediate layer; 04-First self-adhesive asphalt layer; 05-Aluminum foil layer; 051-Embossing area; 06-Protective coating; 07-Isolation side film. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] In the description of this utility model, it should be understood that the terms "longitudinal", "length", "circumferential", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated part must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Throughout the accompanying drawings, identical elements are represented by the same or similar reference numerals. Conventional structures or constructions have been omitted where they may cause confusion in understanding the invention. Furthermore, the shapes, dimensions, and positional relationships of the components in the drawings do not reflect their actual size, proportions, or actual positional relationships. Additionally, any reference symbols placed between parentheses in this invention should not be construed as limiting the scope of the invention.

[0034] 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.).

[0035] 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.

[0036] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, the terms "aluminum foil surface" refer to the surface material of the roll being aluminum foil, "no base" refers to the fact that the roll does not contain a base material, and "self-adhesive" means that the roll has self-adhesive properties and can be directly pasted onto the substrate without the need for additional adhesive.

[0038] The standard structure of aluminum foil-faced, non-woven self-adhesive bitumen waterproof membrane consists of three layers: a self-adhesive layer, an aluminum foil surface layer, and release paper (or silicone film). The self-adhesive layer is the core of the membrane, possessing excellent adhesion and self-healing properties; the aluminum foil surface layer provides good waterproofing and anti-aging properties; and the release paper (or silicone film) protects the self-adhesive layer and needs to be removed before application.

[0039] In the process of developing this utility model, it was discovered that aluminum foil-faced, non-woven self-adhesive bitumen waterproof membrane is an exposed waterproof membrane. After construction, it inevitably faces a damp or even waterlogged environment for extended periods, especially in the corners or shaded areas of the roof. In damp / waterlogged environments, prolonged contact with oxygen can cause the aluminum foil to react, leading to blackening, yellowing, and even powdering. Furthermore, outdoor environments present long-term corrosion from acidic or alkaline substances such as acid rain, sea breezes, and soil salinity, ultimately causing aluminum foil damage and loss of the membrane's exposed function. Additionally, due to its poor resilience, aluminum foil does not automatically return to its original shape after being deformed by external force. Therefore, when using flat aluminum foil in production, deep wrinkles form under the stress of winding after the product is rolled and unrolled, and these wrinkles cannot be repaired. This ultimately leads to water seepage channels at the short-side overlaps, affecting the product's waterproofing function.

[0040] To avoid these problems, the aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane proposed in this invention features a protective coating on the aluminum foil surface. This effectively isolates the aluminum foil from direct contact with acids, alkalis, or oxygen, thus preventing corrosion and significantly extending the exposed service life of the aluminum foil. Simultaneously, a polymer interlayer is placed between the two self-adhesive bitumen layers using a sandwich structure. The polymer interlayer works synergistically with the aluminum foil layer to improve the mechanical properties of the aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane, effectively reducing aluminum foil breakage caused by stress from building structures and structural changes. Furthermore, during the product manufacturing process, the aluminum foil is embossed to effectively prevent water seepage channels from forming during membrane overlaps.

[0041] Figure 1This is a cross-sectional structural diagram of an aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane according to an embodiment of the present invention.

[0042] This utility model provides an aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane, comprising a first self-adhesive bitumen layer 04 and a second self-adhesive bitumen layer 02; a polymer intermediate layer 03 disposed between the first self-adhesive bitumen layer 04 and the second self-adhesive bitumen layer 02; an aluminum foil layer 05 disposed on the surface of the first self-adhesive bitumen layer 04 opposite to the polymer intermediate layer 03; and a protective coating 06 disposed on the aluminum foil layer 05.

[0043] In some embodiments of this utility model, the aluminum foil layer 05 with a protective coating 06 on its surface avoids damage, isolates it from direct contact with corrosive substances and oxygen, and improves the exposed service life of the aluminum foil-faced self-adhesive modified bitumen waterproof membrane. The polymer intermediate layer 03 has a high elongation rate, which can effectively reduce the problem of aluminum foil layer 05 breakage caused by stress generated by the building structure and changes in the building structure. Even if the aluminum foil layer 05 breaks or is damaged, the intermediate film can still serve as a waterproof layer to ensure the waterproof function of the product. The first self-adhesive bitumen layer 04 and the second self-adhesive bitumen layer 02 work together with the aluminum foil layer 05 to fit tightly, improving the mechanical properties of the aluminum foil-faced self-adhesive modified bitumen waterproof membrane and preventing slippage and other problems.

[0044] According to some embodiments of this utility model, the width of the aluminum foil-faced non-woven self-adhesive asphalt waterproof membrane proposed by this utility model is (1000±1) mm, and the thickness specifications of the membrane are 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, and 2 mm.

[0045] Figure 2 This is a schematic diagram of the embossed structure of the aluminum foil surface of an aluminum foil-faced self-adhesive modified bitumen waterproof membrane according to an embodiment of the present invention.

[0046] According to some embodiments of this utility model, the surface of the aluminum foil layer 05 has an embossed pattern, wherein the embossed area 051 is as follows: Figure 2 As shown.

[0047] According to some embodiments of this utility model, the embossed design can effectively release the stress generated during the winding and unwinding of the roll material, avoid deep wrinkles in the roll material, thereby preventing water seepage channels and improving waterproof performance.

[0048] According to some embodiments of this utility model, the aluminum foil layer 05 is soft aluminum or semi-hard aluminum, in states such as O, H12, H14, H22, etc., and the grades are 8011, 8011A, 8079, 8111, 3003, 8006, 8021, etc., with a thickness of 7μm to 200μm and a width of 800mm to 1000mm.

[0049] According to some embodiments of this utility model, the depth of the embossed pattern is less than 2mm.

[0050] According to some embodiments of this utility model, excessive embossing depth can cause adverse effects such as weakened mechanical strength of aluminum foil layer 05 and reduced compatibility with other materials. Therefore, it is necessary to control its depth to ensure the normal use of aluminum foil layer 05.

[0051] According to some embodiments of this utility model, the embossed pattern consists of multiple evenly distributed quadrilaterals.

[0052] According to some embodiments of this utility model, the quadrilateral embossed structure improves the tensile and tear resistance of the aluminum foil layer 05 in both the transverse and longitudinal directions of the plane, thereby improving the overall strength and stability of the roll material and ensuring the adhesion and overall durability of the roll material structure.

[0053] According to some embodiments of this utility model, the spacing between each quadrilateral is 0.5-10mm, for example, it can be 0.5mm, 1mm, 2mm, 4mm, 6mm, 8mm, 10mm, etc., and the side length of each quadrilateral is 1-50mm, for example, it can be 1mm, 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, etc.

[0054] According to some embodiments of this utility model, the area of ​​the embossed pattern accounts for 70%-100% of the surface area of ​​the aluminum foil layer 05, for example, it can be 70%, 75%, 80%, 85%, 90%, 95%, 100%, etc.

[0055] According to some embodiments of the present invention, the area of ​​the embossed pattern within this range can ensure that most or all of the surface of the aluminum foil layer 05 is effectively utilized, thereby improving the adhesion and anti-slip performance of the aluminum foil layer 05.

[0056] According to some embodiments of the present invention, the aluminum foil-faced non-woven self-adhesive modified bitumen waterproof membrane further includes an isolation base film 01 located on the surface opposite to the second self-adhesive bitumen layer 02 and the polymer intermediate layer 03, and an isolation edge film 07 located at the edge of the aluminum foil layer 05 and the protective coating 06.

[0057] According to some embodiments of this utility model, the isolation bottom film 01 and the isolation side film 07 (collectively referred to as the isolation film) can prevent the roll material from being contaminated and damaged during production and transportation, ensuring its integrity. The presence of the isolation film makes it easier to separate the roll material from the substrate during laying, facilitating construction operations and improving work efficiency. At the same time, the isolation film helps maintain the adhesion and waterproofing performance of the roll material, ensuring the stability and durability of the waterproof layer.

[0058] According to some embodiments of this utility model, the width of the isolation edge film 07 is 50-250mm, for example, it can be 50mm, 100mm, 150mm, 200mm, 250mm, etc.; the thickness is 5-50μm, for example, it can be 5μm, 10μm, 15μm, 20μm, 25μm, 30μm, 35μm, 40μm, 45μm, 50μm, etc.; the width of the isolation bottom film 01 is 800-1200mm, for example, it can be 800mm, 850mm, 900mm, 950mm, 1000mm, 1100mm, 1150mm, 1200mm, etc.; the thickness is 5-50μm, for example, it can be 5μm, 10μm, 15μm, 20μm, 25μm, 30μm, 35μm, 40μm, 45μm, 50μm, etc.

[0059] In some specific embodiments, the material of the separator is one of polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), or a blend of PE and PP.

[0060] According to some embodiments of the present invention, the protective coating 06 is a polyester coating or a fluorocarbon coating.

[0061] In some specific embodiments, the polyester coating material includes polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and polyarylate (PAR), while the fluorocarbon coating includes polytetrafluoroethylene (PTFE), perfluoropropylene (FEP), polyvinylidene fluoride (PVDF), and fluoroolefin-vinyl ether copolymer (FEVE). The thickness of the protective coating 06 is 0–5 μm, for example, it can be 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, etc. The color of the protective coating 06 is transparent, red, white, blue, yellow, black, or other custom colors.

[0062] According to some embodiments of this utility model, the tensile strength of the aluminum foil-faced non-woven self-adhesive modified bitumen waterproof membrane is greater than 400 N / 50 mm; the elongation at break of the polymer intermediate layer 03 is greater than 220%; and the softening point of the first bitumen layer and the second bitumen layer is greater than 88°C.

[0063] In some specific embodiments, after the aluminum foil-faced waterproof membrane is installed, the membrane will deform in areas with high stress, such as corners and bottom corners. Long-term exposure to wind, sun, and temperature fluctuations will cause deformation in the building structure, and the membrane will deform accordingly. Additionally, heavy objects may fall from heights. All of these factors can lead to breakage or damage to the aluminum foil, ultimately causing the waterproof membrane to lose its waterproof function. To avoid this problem, the aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane proposed in this invention incorporates a high-elongation polyester film (03) with an elongation rate exceeding 220% as a polymer interlayer. This interlayer, working in conjunction with the aluminum foil, ensures that the final tensile strength of the aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane exceeds 400N / 50mm. This effectively reduces the breakage of the aluminum foil caused by stress from the building structure and changes in the building structure. Even if the aluminum foil layer (05) breaks or is damaged, the polymer interlayer (03) can still function as a waterproof layer to guarantee the product's waterproof function. Specifically, the polymer intermediate layer 03 has a width of 900mm to 1000mm, a thickness of 20μm to 200μm, a transparent or black color, and an elongation of ≥220% at break.

[0064] In some specific embodiments, aluminum foil is a material with excellent thermal conductivity. When the aluminum foil comes into direct contact with modified asphalt, which has a low softening point, the asphalt may flow or drip due to severe heating in a high-temperature environment. To avoid this problem, this invention uses a self-adhesive asphalt compound with excellent high-temperature performance, a softening point >88℃, and a peel strength ≥1.5N / mm with aluminum foil. When bonded to the aluminum foil, it can effectively prevent asphalt slippage, flow, and dripping even at an ambient temperature of 70℃.

[0065] In some specific embodiments, the upper surface of the aluminum foil-faced non-woven self-adhesive modified bitumen waterproof membrane has a self-adhesive bitumen area on the left or right side that is not covered by aluminum foil, and the width of this area is 0 to 200 mm.

[0066] In some specific embodiments, depending on the surface coating material, thickness, and aluminum foil thickness, aluminum foil-faced non-woven self-adhesive modified bitumen waterproof membranes can be designed for different grades such as exposed use for more than 3 years, more than 5 years, and more than 10 years.

[0067] Example 1

[0068] In this embodiment, an aluminum foil-faced, non-woven, self-adhesive bitumen waterproof membrane with a thickness of 1.5 mm and a width of 1000 mm is prepared.

[0069] The protective coating 06 is a polyester coating made of polyethylene terephthalate, transparent in color, and 2 μm thick. The aluminum foil layer 05 is semi-rigid aluminum, grade 8011, in the H22 state, 50 μm thick, and 930 mm wide. The aluminum foil surface has a square embossed pattern with a side length of 8 mm, a longitudinal spacing of 4 mm between squares, and a transverse spacing of 2 mm. The embossed area 051 occupies 100% of the total aluminum foil area. There is a self-adhesive bitumen area on the right side of the roll that is not covered by the aluminum foil, with a width of 70–80 mm. The polymer intermediate layer 03 is a high-elongation polyester film, transparent, 990 mm wide, 50 μm thick, and has an elongation at break of 250%. The first self-adhesive bitumen layer 04 and the second self-adhesive bitumen layer 02 have a softening point of 92℃ and a peel strength of 2.0 N / mm. The side separator film 07 used for the roll material has a width of 120mm, a thickness of 30μm, and is made of PET. The bottom separator film 01 used for the roll material has a width of 1040mm, a thickness of 35μmm, and is made of PE.

[0070] Testing showed that the aluminum foil-faced, non-woven, self-adhesive bitumen waterproof membrane prepared in Example 1 can be used exposed for more than 5 years, with no powdering, corrosion, or oxidation / blackening of the aluminum foil on the product surface. In high-temperature summer environments, the product surface temperature is <55℃, effectively reducing the temperature of the building by 3℃ to 8℃.

[0071] Example 2

[0072] In this embodiment, an aluminum foil-faced, non-woven, self-adhesive bitumen waterproof membrane with a thickness of 2.0 mm and a width of 1000 mm is prepared.

[0073] The protective coating 06 is a polyester coating made of polyvinylidene fluoride (PVDF), white in color, and 4 μm thick. The aluminum foil layer 05 is soft aluminum, grade 8011, in the O state, 100 μm thick, and 950 mm wide. The aluminum foil surface has a square embossed pattern with a side length of 5 mm, a longitudinal spacing of 2 mm between squares, and a transverse spacing of 2 mm. The embossed area 051 occupies 90% of the total aluminum foil area. There is a self-adhesive bitumen area on the right side of the roll that is not covered by the aluminum foil, with a width of 50 mm to 60 mm. The polymer intermediate layer 03 is a high-elongation polyester film, transparent, 990 mm wide, 60 μm thick, and has an elongation at break of 270%. The first self-adhesive bitumen layer 04 and the second self-adhesive bitumen layer 02 have a softening point of 98℃ and a peel strength of 2.5 N / mm. The separating edge film 07 used in the roll has a width of 120 mm, a thickness of 35 μm, and is made of PE. The insulating backing film 01 used in the roll material has a width of 1040mm, a thickness of 40μmm, and is made of PP.

[0074] Testing showed that the aluminum foil-faced, non-woven, self-adhesive bitumen waterproof membrane prepared in Example 2 can be used exposed for more than 10 years, with no powdering, corrosion, or oxidation / blackening of the aluminum foil on the product surface. In high-temperature summer environments, the product surface temperature is <50℃, effectively reducing the temperature of the building by 5℃ to 10℃.

[0075] Example 3

[0076] In this embodiment, an aluminum foil-faced, non-woven, self-adhesive bitumen waterproof membrane with a thickness of 1.2 mm and a width of 1000 mm is prepared.

[0077] The protective coating 06 is a polyester paint, made of polybutylene terephthalate, blue in color, and 1 μm thick. The aluminum foil layer 05 is semi-hard aluminum, grade 8111, in the H14 state, 25 μm thick, and 920 mm wide. The aluminum foil surface has a rectangular embossed grid pattern, with a long side of 6 mm parallel to the longitudinal direction of the roll and a short side of 3 mm parallel to the transverse direction. The longitudinal spacing between the grids is 3 mm, and the transverse spacing is 1.5 mm. The embossed area 051 occupies 95% of the total aluminum foil area. There is a self-adhesive bitumen area on the left side of the roll that is not covered by the aluminum foil, with a width of 80–90 mm. The polymer intermediate layer 03 is a high-elongation polyester film, black in color, 985 mm wide, 40 μm thick, and has an elongation at break of 230%. The softening point of the first self-adhesive bitumen layer 04 and the second self-adhesive bitumen layer 02 is 88℃, and the peel strength is 1.8 N / mm. The side separator film 07 used for the roll material has a width of 150mm, a thickness of 40μm, and is made of PET. The bottom separator film 01 used for the roll material has a width of 1050mm, a thickness of 30μmm, and is made of PE.

[0078] Testing showed that the aluminum foil-faced, non-woven, self-adhesive bitumen waterproof membrane prepared in Example 3 can be used exposed for more than 3 years, with no powdering, corrosion, or oxidation / blackening of the aluminum foil on the product surface. In high-temperature summer environments, the product surface temperature is <60℃, effectively reducing the temperature of the building by 2℃ to 4℃.

[0079] 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 self-adhesive modified bitumen waterproof membrane with aluminum foil surface, characterized in that, The aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane includes: First self-adhesive asphalt layer and second self-adhesive asphalt layer; A polymer interlayer disposed between the first self-adhesive asphalt layer and the second self-adhesive asphalt layer; An aluminum foil layer disposed on the surface opposite to the polymer interlayer of the first self-adhesive asphalt layer; and A protective coating applied to the aluminum foil layer.

2. The aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane according to claim 1, wherein, The surface of the aluminum foil layer has an embossed pattern.

3. The aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane according to claim 2, wherein, The depth of the embossed pattern is less than 2 mm.

4. The aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane according to claim 2, wherein, The embossed pattern consists of multiple evenly distributed quadrilaterals.

5. The aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane according to claim 4, wherein, The spacing between each quadrilateral is 0.5-10mm, and the side length of each quadrilateral is 1-50mm.

6. The aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane according to claim 4, wherein, The embossed pattern covers 70%-100% of the surface area of ​​the aluminum foil layer.

7. The aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane according to claim 1, wherein, The aluminum foil-faced non-woven self-adhesive modified bitumen waterproof membrane also includes an isolation base film located on the surface opposite to the polymer intermediate layer of the second self-adhesive bitumen layer, and an isolation edge film located at the edge of the aluminum foil layer and the protective coating.

8. The aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane according to claim 7, wherein, The width of the isolation membrane is 50-250 mm, and the thickness is 5-50 μm; The isolation base film has a width of 800-1200mm and a thickness of 5-50μm.

9. The aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane according to claim 1, wherein, The protective coating is a polyester coating or a fluorocarbon coating.

10. The aluminum foil-faced, non-woven, self-adhesive modified bitumen waterproof membrane according to claim 1, wherein, The tensile strength of the aluminum foil-faced non-woven self-adhesive modified bitumen waterproof membrane is greater than 400N / 50mm. The elongation at break of the polymer interlayer is greater than 220%; The softening points of the first self-adhesive asphalt layer and the second self-adhesive asphalt layer are greater than 88°C.

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