Corrosion-resistant environment-friendly polymer waterproofing membrane

Abstract

This utility model relates to the field of waterproof membrane technology, specifically a corrosion-resistant and environmentally friendly polymer waterproof membrane, comprising a membrane body with a first overlap and a second overlap on both sides. The membrane body includes a base layer, a waterproof layer, a weather-resistant protective layer, and a second adhesive layer. The waterproof layer is bonded to the upper surface of the base layer, the weather-resistant protective layer is bonded to the side of the waterproof layer away from the base layer, the second adhesive layer is bonded to the side of the base layer away from the waterproof layer, and the second protective layer is bonded to the side of the second adhesive layer away from the base layer. This utility model uses a fluorocarbon resin-modified PVDF film as the outermost weather-resistant protective layer. By reducing the layered structure of the entire waterproof membrane, and utilizing the properties of the fluorocarbon resin-modified PVDF film, the entire membrane possesses excellent scratch resistance, wear resistance, corrosion resistance, oxidation resistance, burn resistance, weather resistance, wear resistance, and impact resistance. Furthermore, the membrane body is simple to process, reducing production costs.

Description

Technical Field

[0001] This utility model relates to the field of waterproof membrane technology, specifically to a corrosion-resistant and environmentally friendly polymer waterproof membrane. Background Technology

[0002] Waterproof membranes are mainly used in building walls, roofs, tunnels, highways, landfills, etc., to resist external rainwater and groundwater seepage. They are flexible building materials that can be rolled up and serve as a leak-proof connection between the foundation and the building. They are the first line of defense for waterproofing the entire project and play a vital role in the overall project.

[0003] Chinese patent CN218597383U discloses an environmentally friendly polymer waterproof membrane that is resistant to high temperatures and corrosion. The membrane body includes a substrate, an anti-corrosion layer, a high-temperature resistant layer, an anti-seepage layer, an adsorption layer, a heat insulation layer, a waterproof layer, and a flame-retardant layer. The anti-corrosion layer is set to improve the anti-corrosion performance of the membrane, the high-temperature resistant layer is set to enhance the high-temperature resistance of the membrane and prevent high temperatures from damaging the membrane structure, and the heat insulation layer is set to improve the heat insulation performance of the membrane.

[0004] However, this waterproof membrane still has shortcomings. The anti-corrosion layer is placed outside the high-temperature resistant layer, while the flame-retardant layer is located inside the high-temperature resistant layer. Since the anti-corrosion layer is made of epoxy resin, it is flammable when it catches fire. The high-temperature resistant layer is made of modified asphalt and does not have flame-retardant properties. When the outer layer burns, the flame-retardant layer is exposed. The exposed inner layer structure lacks the outer layer's scratch protection, which shortens its lifespan. In addition, the membrane has a complex layered structure, is thick, is difficult to process, and is very expensive. Furthermore, the membrane is spliced, and the seams are prone to leakage. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a corrosion-resistant and environmentally friendly polymer waterproof membrane.

[0006] The technical solution of this utility model is: a corrosion-resistant and environmentally friendly polymer waterproof membrane, comprising a membrane body, with a first overlap and a second overlap respectively provided on both sides of the membrane body;

[0007] The roll material body includes a base layer, a waterproof layer, a weather-resistant protective layer, and a second adhesive layer. The waterproof layer is bonded to the upper surface of the base layer, the weather-resistant protective layer is bonded to the side of the waterproof layer away from the base layer, the second adhesive layer is bonded to the side of the base layer away from the waterproof layer, and the second protective layer is bonded to the side of the second adhesive layer away from the base layer.

[0008] Preferably, it also includes a roll, one end of the roll body is bonded to the outer arc surface of the roll, and the roll body is wound around the roll.

[0009] Preferably, the upper surface of the first overlap is flush with the upper surface of the roll body, and a number of clips are spaced apart on the lower surface of the first overlap. The lower surface of the second overlap is flush with the lower surface of the roll body, and a number of slots are spaced apart on the upper surface of the second overlap. The spacing between two adjacent slots is the same as the spacing between two adjacent clips, and the width of the second overlap is the same as the width of the first overlap.

[0010] Preferably, a first adhesive layer is provided on the upper surface of the second overlap, and a first protective layer is provided on the side of the first adhesive layer away from the second overlap.

[0011] Preferably, the base layer is a tensile layer composed of warp-knitted polyester mesh impregnated with epoxy resin.

[0012] Preferably, the waterproof layer is a waterproof layer composed of a blend of thermoplastic polyolefin and nano-silica.

[0013] Preferably, the weather-resistant protective layer is a protective layer composed of a fluorocarbon resin modified PVDF film, and a polysilazane coating is provided on the side of the fluorocarbon resin modified PVDF film away from the waterproof layer.

[0014] Preferably, the second adhesive layer is a composite adhesive layer of butyl rubber and SES.

[0015] Preferably, the second protective layer is a silicone oil-impregnated PET film isolation layer.

[0016] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0017] By placing the weather-resistant protective layer as the outermost layer, which is made of fluorocarbon resin-modified PVDF film and coated with a polysilazane coating, it possesses excellent scratch resistance, wear resistance, corrosion resistance, oxidation resistance, burn resistance, and weather resistance, wear resistance, and impact resistance. This weather-resistant protective layer simultaneously meets multiple complex functional requirements, reducing the thickness of the roll material. This allows for a larger area to be laid with the same outer diameter roll material, reducing material costs and simplifying roll material processing. By setting a first overlap and a second overlap on both sides of the roll material body, with locking strips and grooves on these overlaps, water leakage at the joints can be effectively prevented when splicing adjacent rolls, improving overall waterproof performance. Attached Figure Description

[0018] Figure 1 This is a perspective view of one embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure in one embodiment of the present invention.

[0020] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle.

[0021] Figure 4 for Figure 1 Cross-sectional view.

[0022] Reference numerals in the attached drawings: 1. Roll material body; 1a. First overlap; 1a1. Clip strip; 1b. Second overlap; 1b1. Clip groove; 1b2. First adhesive layer; 1b3. First protective layer; 101. Base layer; 102. Waterproof layer; 103. Weather-resistant protective layer; 104. Second adhesive layer; 105. Second protective layer; 2. Roll. Detailed Implementation

[0023] Example 1

[0024] like Figures 1-4 As shown, this utility model proposes a corrosion-resistant and environmentally friendly polymer waterproof membrane, including a membrane body 1. A first overlap 1a and a second overlap 1b are respectively provided on both sides of the membrane body 1. The upper surface of the first overlap 1a is flush with the upper surface of the membrane body 1, and a plurality of retaining strips 1a1 are spaced apart on the lower surface of the first overlap 1a. The lower surface of the second overlap 1b is flush with the lower surface of the membrane body 1, and a plurality of retaining grooves 1b1 are spaced apart on the upper surface of the second overlap 1b. The spacing between two adjacent retaining grooves 1b1 is the same as the spacing between two adjacent retaining strips 1a1, and the width of the second overlap 1b is the same as the width of the first overlap 1a.

[0025] The roll material body 1 includes a base layer 101, a waterproof layer 102, a weather-resistant protective layer 103, and a second adhesive layer 104. The base layer 101 is a tensile layer composed of warp-knitted polyester mesh impregnated with epoxy resin. The thickness of the base layer 101 is 0.8-1.2 mm, the tensile strength is ≥800 N / 50 mm, and the high temperature resistance is 200℃. The waterproof layer 102 is a waterproof layer composed of a blend of thermoplastic polyolefin and nano-silica. The thickness of the waterproof layer 102 is 1.0-1.5 mm, and the water vapor permeability is <0.1 g / (m2·h). The weather-resistant protective layer 103 is a protective layer composed of a fluorocarbon resin-modified PVDF film with a thickness of 0.2-0.5 mm. A polysilazane coating is applied to the side of the fluorocarbon resin-modified PVDF film away from the waterproof layer 102. The second adhesive layer 104 is a composite adhesive layer of butyl rubber and SEBS with a thickness of 0.3-0.6 mm and an adhesive strength ≥2.0 N / mm. The second protective layer 105 is a silicone oil-impregnated PET film isolation layer with a thickness of 0.1 mm. The waterproof layer 102 is bonded to the upper surface of the base layer 101. The weather-resistant protective layer 103 is bonded to the side of the waterproof layer 102 away from the base layer 101. The second adhesive layer 104 is bonded to the side of the base layer 101 away from the waterproof layer 102. The second protective layer 105 is bonded to the side of the second adhesive layer 104 away from the base layer 101. It also includes a roll 2, one end of the roll body 1 is bonded to the outer arc surface of the roll 2, and the roll body 1 is wound around the roll 2.

[0026] In this invention, after the entire roll body 1 is laid, the weather-resistant protective layer 103 faces outwards. Because the weather-resistant protective layer has functions such as UV resistance, chemical corrosion resistance, and scratch resistance, combined with the polysilazane coating sprayed on its surface, it possesses high strength, high modulus, lightweight, and excellent high-temperature resistance, corrosion resistance, oxidation resistance, burn resistance, weather resistance, wear resistance, impact resistance, low density, and thin coating properties, meeting the requirements for lightweighting and special coating protection for low-altitude products. The waterproof layer 102, closely adhering to the weather-resistant protective layer 103, prevents water penetration into the roll, achieving waterproofing. Protected by the outer weather-resistant protective layer 103, it maintains good waterproof performance over a long lifespan. The base layer 101, closely adhering to the waterproof layer 102, is made of warp-knitted polyester mesh impregnated with epoxy resin, giving the entire waterproof roll extremely high tensile strength after unfolding, preventing deformation and narrowing due to excessive stretching during installation. The roll body 1 uses a composite adhesive of butyl rubber and SEBS as the second adhesive layer 104. Butyl rubber has a dense molecular structure and its air tightness is 5-10 times that of natural rubber, which can effectively block the penetration of gas and water vapor. The saturated structure of SEBS further enhances the water vapor resistance. Butyl rubber has 10 times better ozone aging resistance than ordinary rubber. SEBS does not contain double bonds and has excellent resistance to ultraviolet rays and ozone. After the composite adhesive is applied, the outdoor service life is significantly extended. After 3000 hours of exposure, the strength retention rate is >95%. Therefore, the composite adhesive system surpasses single-component adhesives in terms of sealing performance, durability and processing efficiency through material complementarity. It is especially suitable for dynamic bonding scenarios with high reliability requirements.

[0027] Example 2

[0028] like Figure 2 and Figure 3 As shown, the present invention proposes a corrosion-resistant and environmentally friendly polymer waterproof membrane. Compared with Embodiment 1, a first adhesive layer 1b2 is provided on the upper surface of the second overlap 1b, and a first protective layer 1b3 is provided on the side of the first adhesive layer 1b2 away from the second overlap 1b.

[0029] In an optional embodiment, after the current row of roll body 1 is laid, the first protective layer 1b3 on the second overlap 1b of the roll body 1 is torn off, and then the first overlap 1a of the next row of roll body 1 is pressed onto the second overlap 1b. The clip 1a1 is inserted into the corresponding clip 1b1. At the same time, the first overlap 1a and the second overlap 1b on the adjacent side of the two rows of roll body 1 are bonded together by the first adhesive layer 1b2, which effectively prevents water from entering after the first overlap 1a is lifted, and ensures that the surface height of the waterproof roll is flush after it is laid.

[0030] Example 3

[0031] The present invention proposes a corrosion-resistant and environmentally friendly polymer waterproof membrane. Compared with Embodiment 1 or Embodiment 2, the second overlap 1b is also bonded with a second adhesive layer 104 on the side away from the first adhesive layer 1b2, and the second adhesive layer 104 is bonded with a second protective layer 105 on the side away from the second overlap 1b.

[0032] In this embodiment, while removing the second protective layer 105 of the roll body 1, the second protective layer 105 on the bottom surface of the second overlap 1b is also removed, so that the second overlap 1b is simultaneously bonded to the wall (or other load-bearing surface) to prevent the second overlap 1b from bulging.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A corrosion-resistant and environmentally friendly polymer waterproof membrane, characterized in that, It includes a roll body (1), and a first overlap (1a) and a second overlap (1b) are respectively provided on both sides of the roll body (1); The roll body (1) includes a base layer (101), a waterproof layer (102), a weather-resistant protective layer (103), and a second adhesive layer (104). The waterproof layer (102) is bonded to the upper surface of the base layer (101), the weather-resistant protective layer (103) is bonded to the side of the waterproof layer (102) away from the base layer (101), the second adhesive layer (104) is bonded to the side of the base layer (101) away from the waterproof layer (102), and the second protective layer (105) is bonded to the side of the second adhesive layer (104) away from the base layer (101).

2. The corrosion-resistant and environmentally friendly polymer waterproof membrane according to claim 1, characterized in that, It also includes a roll (2), one end of the roll body (1) is bonded to the outer arc surface of the roll (2), and the roll body (1) is wound around the roll (2).

3. The corrosion-resistant and environmentally friendly polymer waterproof membrane according to claim 1, characterized in that, The upper surface of the first overlap (1a) is flush with the upper surface of the roll body (1). Several clips (1a1) are spaced apart on the lower surface of the first overlap (1a). The lower surface of the second overlap (1b) is flush with the lower surface of the roll body (1). Several slots (1b1) are spaced apart on the upper surface of the second overlap (1b). The spacing between two adjacent slots (1b1) is the same as the spacing between two adjacent clips (1a1). The width of the second overlap (1b) is the same as the width of the first overlap (1a).

4. The corrosion-resistant and environmentally friendly polymer waterproof membrane according to claim 3, characterized in that, A first adhesive layer (1b2) is provided on the upper surface of the second overlap (1b), and a first protective layer (1b3) is provided on the side of the first adhesive layer (1b2) away from the second overlap (1b).

5. The corrosion-resistant and environmentally friendly polymer waterproof membrane according to claim 1, characterized in that, The base layer (101) is a tensile layer made of warp-knitted polyester mesh impregnated with epoxy resin.

6. The corrosion-resistant and environmentally friendly polymer waterproof membrane according to claim 1, characterized in that, The waterproof layer (102) is a waterproof layer composed of a blend of thermoplastic polyolefin and nano silica.

7. The corrosion-resistant and environmentally friendly polymer waterproof membrane according to claim 1, characterized in that, The weather-resistant protective layer (103) is a protective layer composed of a fluorocarbon resin modified PVDF film, and a polysilazane coating is provided on the side of the fluorocarbon resin modified PVDF film away from the waterproof layer (102).

8. The corrosion-resistant and environmentally friendly polymer waterproof membrane according to claim 1, characterized in that, The second adhesive layer (104) is a composite adhesive layer of butyl rubber and SEBS.

9. The corrosion-resistant and environmentally friendly polymer waterproof membrane according to claim 1, characterized in that, The second protective layer (105) is a silicone oil-impregnated PET film isolation layer.

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