Hydrophobic waterproof roll
By introducing a hydrophobic layer, a double-layer PE waterproof layer, an insulation layer and a self-adhesive layer into the waterproof membrane, the problem of easy damage to the waterproof membrane during construction is solved, higher waterproof performance and bonding strength are achieved, and the construction needs in complex environments are adapted.
Patent Information
- Application Number
- CN202422649063.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Ordinary waterproof membranes are easily damaged by rocks and sharp objects during construction, which greatly reduces the waterproof effect.
A hydrophobic waterproof membrane was designed, which includes a hydrophobic layer, a double-layer PE waterproof layer, an insulation layer and a self-adhesive layer. The hydrophobic layer is coated with polytetrafluoroethylene, the double-layer PE waterproof layer increases the waterproof ability, the insulation layer uses thermal insulation cotton to provide a buffer, the self-adhesive layer is chemically cross-linked with the concrete through hot melt adhesive, and the isolation sand improves the peeling strength.
It reduces pollution and damage during the construction process, improves waterproofing ability, enhances the bonding strength between the membrane and the base layer, adapts to the rock temperature environment and provides thermal insulation effect.
Smart Images
Figure CN223304381U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of waterproof coiled materials, in particular to a hydrophobic waterproof coiled material. Background Art
[0002] With the continuous development of my country's transportation industry, the number of tunnel waterproofing projects is increasing, and the requirements for waterproofing materials are becoming increasingly stringent. Tunnel waterproofing materials generally include waterproof sheets, drainage boards, and waterproof coatings. Conventional waterproofing membranes are susceptible to damage from rocks and sharp objects during construction. Furthermore, due to the inherent hardness of the materials, they can form hollows after construction. Furthermore, the construction process can easily contaminate the waterproof layer, significantly compromising its effectiveness. Therefore, developing a new hydrophobic waterproofing membrane has become a pressing challenge for those skilled in the art. Utility Model Content
[0003] The utility model aims to provide a hydrophobic waterproof coiled material, which solves the problem that ordinary waterproof coiled materials are easily punctured by rocks and sharp objects during construction, thereby greatly reducing the waterproof effect.
[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0005] The utility model discloses a hydrophobic waterproof roll material, comprising a hydrophobic layer, a first PE waterproof layer, a thermal insulation layer, a second PE waterproof layer and a self-adhesive layer, wherein the hydrophobic layer is arranged on the upper surface of the first PE waterproof layer, the first PE waterproof layer is arranged on the upper surface of the thermal insulation layer, the thermal insulation layer is arranged on the upper surface of the second PE waterproof layer, and the second PE waterproof layer is arranged on the self-adhesive layer.
[0006] Furthermore, the self-adhesive layer includes an isolation sand layer and a self-adhesive layer.
[0007] Furthermore, the hydrophobic layer is a polytetrafluoroethylene coating with a thickness of 0.01 to 0.02 mm.
[0008] Furthermore, the insulation layer is made of insulation cotton with a thickness of 0.4 to 0.6 mm.
[0009] Furthermore, the thickness of the hot melt adhesive of the self-adhesive layer is 0.25 to 0.3 mm.
[0010] Furthermore, the isolation sand layer is made of chemically synthesized sand with a particle size of 40 to 70 meshes.
[0011] Compared with the prior art, the beneficial technical effects of the present invention are:
[0012] The utility model discloses a hydrophobic waterproofing membrane with a hydrophobic layer, and the polytetrafluoroethylene coating reduces the friction coefficient of the water-facing layer of the waterproof material, which can not only reduce the pollution and damage to the waterproof layer during the construction process, but also quickly make the water slide off after encountering water to avoid slow seepage; the utility model discloses a hydrophobic waterproofing membrane with a double-layer PE waterproofing layer, which greatly improves the waterproofing ability; the utility model discloses a thermal insulation layer between the double waterproof layers, and the filling of thermal insulation cotton can not only play a buffering role and reduce the damage to other waterproof layers by external forces, but also play a certain thermal insulation role for working conditions with relatively special rock temperature environments; the utility model discloses a hydrophobic waterproofing membrane with a self-adhesive layer, which can The viscose has good creep and penetration functions, which allows it to penetrate into the capillaries or gaps of the cement slurry to form a physical penetration effect. At the same time, the hot-melt pressure-sensitive adhesive can react chemically with the calcium ions in the post-poured concrete to form a chemical cross-linking structure, so that the roll material and the base layer are firmly bonded together, and the waterproof effect is better. In addition, the isolation sand is made of chemical synthetic sand, which can increase the peeling strength between the roll material and the post-poured concrete. In general, the hydrophobic waterproof roll material of the utility model has a clever design, practical functions, and a simple structure. It effectively solves the problem that ordinary waterproof roll materials are easily punctured by rocks and sharp objects during construction, and the waterproof effect will be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The present invention will be further described below with reference to the accompanying drawings:
[0014] Figure 1 This is a cross-sectional view of the hydrophobic waterproof membrane of the utility model.
[0015] Explanation of the accompanying symbols: 1. Hydrophobic layer; 2. First PE waterproof layer; 3. Thermal insulation layer; 4. Second PE waterproof layer; 5. Self-adhesive layer; 6. Isolation sand layer. DETAILED DESCRIPTION
[0016] like Figure 1 As shown, a hydrophobic waterproof membrane includes a hydrophobic layer 1, a first PE waterproof layer 2, a thermal insulation layer 3, a second PE waterproof layer 4 and a self-adhesive layer. The hydrophobic layer 1 is arranged on the upper surface of the first PE waterproof layer 2, the first PE waterproof layer 2 is arranged on the upper surface of the thermal insulation layer 3, the thermal insulation layer 3 is arranged on the upper surface of the second PE waterproof layer 4, and the second PE waterproof layer 4 is arranged on the self-adhesive layer.
[0017] The self-adhesive layer comprises an isolation sand layer 6 and a self-adhesive layer 5. The hydrophobic layer 1 is a polytetrafluoroethylene coating with a thickness of 0.01 to 0.02 mm. The thermal insulation layer 3 utilizes thermal insulation cotton with a thickness of 0.4 to 0.6 mm. The hot melt adhesive in the self-adhesive layer 5 is 0.25 to 0.3 mm thick. The isolation sand layer 6 utilizes chemically synthesized sand with a particle size of 40 to 70 mesh.
[0018] The PE waterproof layer is made of high-density polyethylene (HDPE), metallocene polyethylene (MPE) resin, light stabilizing agent HALS480GW-540, one of thiobisphenol AM-101 and benzophenone UV-9, and one of antioxidants 264, 1010, and 2246, and has a thickness of 0.5-0.7 mm;
[0019] During production, the raw materials of the PE waterproof layer (high-density polyethylene (HDPE), metallocene polyethylene (MPE) resin, special additives and anti-aging agents) are melted, plasticized, and extruded through a die (the thickness of the PE waterproof layer needs to be controlled during this process).
[0020] The insulation layer 3 is placed between the two extrusion die heads, and the first PE waterproof layer 2, the insulation layer 3, and the second PE waterproof layer 4 are rolled together, and then coated with hot melt adhesive with a thickness of 0.25-0.3mm, covered with isolation sand, and a bonding edge of 8-10mm is left on one side.
[0021] Spray a polytetrafluoroethylene layer on the uncoated surface of the coil with a thickness of 0.01-0.02mm, and cut and reel it after cooling.
[0022] During construction, the hydrophobic layer 1 is the water-facing layer.
[0023] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.
Claims
1. A hydrophobic waterproof membrane, characterized by: The invention comprises a hydrophobic layer (1), a first PE waterproof layer (2), a thermal insulation layer (3), a second PE waterproof layer (4) and a self-adhesive layer, wherein the hydrophobic layer (1) is arranged on the upper surface of the first PE waterproof layer (2), the first PE waterproof layer (2) is arranged on the upper surface of the thermal insulation layer (3), the thermal insulation layer (3) is arranged on the upper surface of the second PE waterproof layer (4), and the second PE waterproof layer (4) is arranged on the self-adhesive layer.
2. The hydrophobic waterproof membrane according to claim 1, characterized in that: The self-adhesive layer comprises an isolation sand layer (6) and a self-adhesive layer (5).
3. The hydrophobic waterproof membrane according to claim 1, characterized in that: The hydrophobic layer (1) is a polytetrafluoroethylene coating with a thickness of 0.01 to 0.02 mm.
4. The hydrophobic waterproof membrane according to claim 1, characterized in that: The thermal insulation layer (3) is made of thermal insulation cotton with a thickness of 0.4 to 0.6 mm.
5. The hydrophobic waterproof membrane according to claim 2, characterized in that: The thickness of the hot melt adhesive of the self-adhesive layer (5) is 0.25 to 0.3 mm.
6. The hydrophobic waterproof membrane according to claim 2, characterized in that: The isolation sand layer (6) is made of chemically synthesized sand with a particle size of 40 to 70 meshes.