Long fiber composite layer EPDM waterproofing membrane

Abstract

The utility model discloses a long fiber composite layer EPDM waterproof roll material relates to waterproof roll material technical field, the protective layer, the main body layer, the composite layer, the self -adhesion layer and the isolation layer that are set gradually from top to bottom, wherein the composite layer is multilayer structure, including the base reinforcing layer and long fiber layer, and long fiber layer is located the base reinforcing layer bottom, the lower surface of long fiber layer is equipped with the fiber ring that is arrayed distribution, and is equipped with the interval filling layer between any fiber ring, the protective layer is the PE film of thickening type, and the thickness is 0.4-0.6mm, the fiber ring is the composite filament of polyethylene acrylic dacron, the interval filling layer is the non -woven fabric of drawing hair, the application has promoted the bonding performance with cement base surface, has buffered the destruction of base layer crack to waterproof layer, has expanded the contact area simultaneously and effectively overcomeed base layer stress deformation to the whole adhesion of roll material and the tensile strength ability of effective promotion have been effectively promoted, reduced the problem of EPDM dust and smoke big problem in the production process.

Description

Technical Field

[0001] This utility model relates to the field of waterproof membrane technology, and in particular to a long fiber composite layer EPDM rubber waterproof membrane. Background Technology

[0002] Ethylene propylene diene monomer (EPDM) waterproof membrane is made by mixing EPDM rubber with appropriate amounts of butyl rubber, vulcanizing agents, accelerators, softeners, and reinforcing agents, and processing it through processes such as intensive mixing, sheeting and filtration, and extrusion molding. The typical structure of EPDM waterproof membrane mainly includes: a main layer, which is made of EPDM rubber as the main material, with added vulcanizing agents and reinforcing agents, and is made through intensive mixing and extrusion molding processes, and has high elasticity and aging resistance; a self-adhesive layer (some models), which uses butyl rubber-based rubber compound, reacts with the concrete substrate to form chemical bonds, and improves the bonding strength; and a release layer, which is covered with an anti-sticking material for easy peeling during construction.

[0003] Traditional composite layers, in pursuit of thickness, are often designed with short fibers, typically in the form of fabric fleece or non-woven mesh. However, this short fiber design results in weak tensile strength. Membranes with insufficient tensile strength are prone to cracking when the substrate deforms (e.g., due to foundation settlement or thermal shrinkage). They cannot absorb stress through elongation, leading to waterproofing layer failure. For example, membranes with inadequate elongation may crack directly at low winter temperatures, causing leaks. Utility Model Content

[0004] Therefore, in order to solve the above problems and shortcomings, this utility model provides a long fiber composite layer EPDM rubber waterproof membrane, which includes a protective layer, a main layer, a composite layer, a self-adhesive layer and an isolation layer arranged from top to bottom. The composite layer has a multi-layer structure, including a base reinforcement layer and a long fiber layer, with the long fiber layer located at the bottom of the base reinforcement layer.

[0005] Preferably, the lower surface of the long fiber layer is provided with fiber rings distributed in an array, and an interstitial layer is provided between any fiber rings.

[0006] Preferably, the protective layer is a thickened PE film with a thickness of 0.4-0.6 mm.

[0007] Preferably, the fiber ring is a composite filament of polyethylene, polypropylene, and polyester; the intercalation layer is a napped nonwoven fabric.

[0008] Preferably, the main body layer is a composite mixture of polyethylene, polypropylene and EPDM rubber, with a thickness of 0.8-1.2 mm.

[0009] Preferably, the self-adhesive layer is one of a butyl rubber-based adhesive layer and a self-adhesive polymer-modified asphalt layer, with a thickness of 0.6-1 mm.

[0010] Preferably, the surface of the isolation layer is covered with an anti-stick material layer.

[0011] The beneficial effects of this utility model can be specifically analyzed as follows: Advantage 1: This application improves the long fiber layer in the composite layer, enabling it to penetrate deeper into the pores of the cementitious substrate and form a mechanical interlocking effect. At the same time, the fiber network can disperse stress and reduce the risk of peeling between the roll and the substrate. It significantly improves the adhesion performance to the cementitious substrate without changing the thickness. In addition, the ductility of the long fibers can buffer the damage of the waterproof layer to the substrate cracks. Meanwhile, the time-filled non-woven fabric can improve the adhesion of the self-adhesive layer, expand the contact area and effectively overcome the stress deformation of the substrate, thereby effectively improving the overall adhesion and tensile strength of the roll.

[0012] Advantage 2: The main layer of this application adds odorless, non-toxic polyethylene with excellent low-temperature resistance and chemical stability, and polypropylene with no obvious odor under high-temperature vulcanization to the traditional EPDM rubber material. The mixing ratio of the three is 1:1:8 to 2:2:6, which effectively reduces the rubber odor of the finished roll material during the production process, and at the same time reduces the problem of dust and smoke from EPDM rubber, greatly improving the emission reduction of PM2.5 and VOCs during the production process, and effectively reducing air pollution in the working environment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the long fiber composite layer EPDM rubber waterproof membrane of this utility model; Figure 2 This is a utility model Figure 1 A schematic diagram of the back of the mounting frame; Reference numerals: Protective layer 1, Main layer 2, Composite layer 3, Long fiber layer 31, Fiber ring 311, Interstitial layer 312, Self-adhesive layer 4, Isolation layer 5. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Throughout the invention, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. It should be understood that ordinal numbers and directional descriptions, such as "first," "second," "third," "upper," "lower," "left," and "right," are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly and not as limiting the scope of this utility model.

[0015] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Please refer to the attached drawings. Figure 1-2 As shown, the present application provides a long fiber composite layer EPDM rubber waterproof membrane, which includes a protective layer 1, a main layer 2, a composite layer 3, a self-adhesive layer 4 and an isolation layer 5 arranged sequentially from top to bottom. The composite layer 3 has a multi-layer structure, including a base reinforcement layer and a long fiber layer 31, with the long fiber layer 31 located at the bottom of the base reinforcement layer.

[0016] More specifically, the lower surface of the long fiber layer 31 is provided with fiber rings 311 distributed in an array, and an interstitial layer 312 is provided between any fiber rings 311; the fiber rings 311 are composite filaments of polyethylene, polypropylene and polyester; the interstitial layer 312 is a napped nonwoven fabric; the composite filaments of polyethylene, polypropylene and polyester can be unfolded and restored from a disc shape to a filament shape, thereby penetrating deeper into the pores of the cement base and forming a mechanical interlocking effect. At the same time, the fiber network can disperse stress and reduce the risk of peeling between the roll material and the base layer. It significantly improves the adhesion performance with the cement base surface without changing the thickness. In addition, the extensibility of the long fibers can buffer the damage of the waterproof layer to the base layer cracks. Meanwhile, the nonwoven fabric of the interstitial layer 312 can improve the adhesion of the self-adhesive layer 4, expand the contact area and effectively overcome the stress deformation of the base layer.

[0017] More specifically, the protective layer 1 is a thickened PE film with a thickness of 0.4-0.6 mm; the protective layer 1 is preferably a thickened PE film, but an aluminum foil layer can also be used, the main purpose of which is to form a flexible protection for the surface of the roll material.

[0018] More specifically, the main body layer 2 is a composite layer of polyethylene (PE), polypropylene (PP), and ethylene propylene diene monomer (EPDM) rubber, with a thickness of 0.8–1.2 mm. Main body layer 2 adds odorless, non-toxic polyethylene (PE) with excellent low-temperature resistance and chemical stability, and polypropylene (PP) material with no obvious odor under high-temperature vulcanization, to the traditional EPDM rubber material. The mixing ratio of the three is 1:1:8–2:2:6. This effectively reduces the rubber odor of the finished roll material during production, while also reducing the problems of dust and smoke generated by EPDM rubber, greatly improving the reduction of PM2.5 and VOC emissions during production. More specifically, self-adhesive layer 4 consists of a butyl rubber-based adhesive layer and a self-adhesive polymer-modified asphalt layer, with a thickness of 0.6-1mm. It reacts with the concrete substrate to form chemical bonds, enhancing adhesion strength. If self-adhesive polymer-modified asphalt is preferred, its cost is relatively low, and it exhibits good adhesion performance at room temperature. If butyl rubber-based adhesive is preferred, it possesses excellent weather resistance and elasticity, remaining stable under high and low temperature conditions and structural deformation environments, and offering strong waterproofing and sealing. Self-adhesive polymer-modified asphalt is prone to embrittlement at low temperatures and may experience aging issues with long-term use. The specific choice should be determined based on the construction environment and the substrate. More specifically, the surface of the isolation layer 5 is covered with an anti-stick material layer; the anti-stick material layer of the isolation layer 5 mainly includes silicone oil anti-stick release film or silicone-coated release paper, which can effectively prevent the roll material from sticking to the base layer or waterproof layer, ensuring the convenience of subsequent construction.

[0019] In summary, this utility model of long-fiber composite EPDM rubber waterproof membrane improves the adhesion to cement-based surfaces, buffers the damage to the waterproof layer caused by cracks in the substrate, expands the contact area, and effectively overcomes substrate stress deformation. As a result, the overall adhesion and tensile strength of the membrane are effectively improved, and the problems of dust and smoke generated by EPDM rubber during the production process are reduced.

[0020] The above are merely embodiments of this utility model. Common knowledge such as specific structures and characteristics in the solutions are not described in detail here. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and they will not affect the implementation effect of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims. The specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A long-fiber composite layer EPDM rubber waterproof membrane, characterized in that: It includes a protective layer (1), a main body layer (2), a composite layer (3), a self-adhesive layer (4), and an isolation layer (5) arranged sequentially from top to bottom. The composite layer (3) is a multi-layer structure, including a tire base reinforcement layer and a long fiber layer (31). The long fiber layer (31) is located at the bottom of the tire base reinforcement layer.

2. The long-fiber composite layer EPDM rubber waterproof membrane according to claim 1, characterized in that: The lower surface of the long fiber layer (31) is provided with fiber rings (311) arranged in an array, and an interstitial layer (312) is provided between any of the fiber rings (311).

3. The long-fiber composite layer EPDM rubber waterproof membrane according to claim 1, characterized in that: The protective layer (1) is a thickened PE film with a thickness of 0.4-0.6 mm.

4. The long-fiber composite layer EPDM rubber waterproof membrane according to claim 2, characterized in that: The fiber ring (311) is a composite filament of polyethylene, polypropylene and polyester; the interstitial layer (312) is a napped nonwoven fabric.

5. The long-fiber composite layer EPDM rubber waterproof membrane according to claim 1, characterized in that: The main body layer (2) is a composite mixture of polyethylene, polypropylene and EPDM rubber, with a thickness of 0.8-1.2 mm.

6. The long-fiber composite layer EPDM rubber waterproof membrane according to claim 1, characterized in that: The self-adhesive layer (4) is one of a butyl rubber-based rubber layer and a self-adhesive polymer-modified asphalt layer, with a thickness of 0.6-1mm.

7. The long-fiber composite layer EPDM rubber waterproof membrane according to claim 1, characterized in that: The surface of the isolation layer (5) is covered with an anti-sticking material layer.

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