Waterproof coiled material

Abstract

The invention relates to the field of waterproof materials, and discloses a waterproof roll. The waterproof coiled material comprises a surface layer structure and an inner layer structure, the inner layer structure comprises a first waterproof layer and an aerogel layer which are sequentially arranged in a stacked mode, and the breadth of the aerogel layer is smaller than that of the first waterproof layer so that side edges can be reserved on the two sides of the first waterproof layer. Hollowed-out areas are arranged on the edges of the two sides of the aerogel layer respectively; the surface layer structure comprises a second waterproof layer and a fireproof layer; the second waterproof layer comprises a covering part and a filling part; the covering part covers the two side edges of the first waterproof layer in the inner layer structure and covers the aerogel layer; and the filling part of the second waterproof layer penetrates through the hole units of the hollow area from top to bottom and is pressed against the first waterproof layer. The waterproof coiled material has good flame retardance and heat preservation performance, is light in weight and is very suitable for old house transformation projects.

Description

Technical Field

[0001] This invention relates to the field of waterproof materials, and more specifically to a waterproof membrane. Background Technology

[0002] Home renovation projects have unique requirements for waterproofing materials. First, the waterproofing materials need to effectively improve the waterproofing effect of the building, meet the latest standards in all aspects, and have good durability. Second, they need to effectively improve the quality of life, achieve effective insulation, and contribute to energy conservation and emission reduction. Third, the waterproofing materials need to be lightweight to reduce the burden on the fragile structure of the house.

[0003] Currently, TPO (thermoplastic polyolefin elastomer) is a common outdoor waterproof material on the market due to its good processability and chemical stability, and its density of only 0.88-0.9 g / cm³. 3 Rock wool is a low-density waterproof material, making it an ideal choice for renovating old houses. Waterproof membranes made from this material possess good physical and mechanical properties and durability. However, this material has insufficient flame retardant properties during the renovation and repair of old houses, and it requires the use of insulation materials such as rock wool and sound insulation materials for construction, making the process cumbersome and placing an excessive burden on old houses.

[0004] Therefore, it is of great significance to develop a waterproof membrane that combines good flame retardancy, excellent thermal insulation, and lightweight properties. Summary of the Invention

[0005] The purpose of this invention is to provide a lightweight waterproof membrane with excellent flame retardant and thermal insulation properties.

[0006] To achieve the above objectives, the present invention provides a waterproof membrane comprising a surface structure and an inner structure;

[0007] The inner structure includes a first waterproof layer and an aerogel layer stacked sequentially. The width of the aerogel layer is smaller than the width of the first waterproof layer so that the first waterproof layer has side edges on both sides. The aerogel layer has hollow areas on both sides of its edge.

[0008] The surface structure includes a second waterproof layer and a fireproof layer, and the width of the fireproof layer is smaller than the width of the second waterproof layer so that the second waterproof layer has side edges on both sides; the second waterproof layer includes a covering part and a filling part; the covering part covers the two side edges of the first waterproof layer in the inner layer structure and covers the aerogel layer; the filling part of the second waterproof layer passes through the hole unit of the hollow area from top to bottom and presses against the first waterproof layer.

[0009] Preferably, the width of the hollowed-out areas on both sides of the aerogel layer is equal, and the width of the hollowed-out area on either side is 0.5%-2% of the width of the aerogel layer.

[0010] In a preferred embodiment, the distance between the outer side of any hollow area on one side of the aerogel layer and the edge of the aerogel layer is independently 40mm-60mm.

[0011] Preferably, the hollow area on any side of the aerogel layer contains multiple porous units, and the total area of ​​the multiple porous units is 0.02m² relative to each 1 square meter of the hollow area. 2 -0.15m 2 .

[0012] Preferably, the width of the aerogel layer is 97%-99% of the width of the first waterproof layer.

[0013] Preferably, the width of the first waterproof layer is 1990mm-2010mm.

[0014] In a preferred embodiment, the thickness of the first waterproof layer and the thickness of the second waterproof layer are each independently 0.5mm-1mm.

[0015] Preferably, the thickness of the aerogel layer is 0.1mm-0.5mm, and the thickness of the fireproof layer is 0.2mm-1mm.

[0016] Preferably, both the material forming the first waterproof layer and the material forming the second waterproof layer are TPO materials.

[0017] In a preferred embodiment, the aerogel layer is a silica aerogel film.

[0018] The present invention comprises a first waterproof layer and a second waterproof layer formed of TPO material, and uses an aerogel layer with hollowed-out areas on both sides as an interlayer between the first waterproof layer and the second waterproof layer, and adds a fireproof layer on the outermost side, so that the roll material has good durability and safety in harsh outdoor environments.

[0019] The waterproof membrane provided by this invention is easy to install and can not only meet the needs of old houses for waterproofing, flame retardancy and heat insulation, but also reduce the burden of building materials used in renovation on old houses, thus achieving high-quality renovation of old houses. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of a preferred waterproof membrane provided by the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the aerogel layer in a preferred waterproof membrane provided by the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the second waterproof layer in a preferred waterproof membrane provided by the present invention.

[0023] Explanation of reference numerals in the attached figures

[0024] 1. First waterproof layer; 2. Aerogel layer; 3. Second waterproof layer; 4. Fireproof layer; A. Hollow area; 21. Hole unit; 31. Covering part; 32. Filling part. Detailed Implementation

[0025] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

[0026] The following combination Figure 1 , Figure 2 and Figure 3 A description of preferred waterproof membranes of the present invention is provided.

[0027] As mentioned above, the present invention provides a waterproof membrane comprising a surface structure and an inner structure;

[0028] The inner structure includes a first waterproof layer 1 and an aerogel layer 2 stacked sequentially. The width of the aerogel layer 2 is smaller than the width of the first waterproof layer 1 so that the first waterproof layer 1 has side edges on both sides. The aerogel layer 2 has a hollow area A on each side edge.

[0029] The surface structure includes a second waterproof layer 3 and a fireproof layer 4, and the width of the fireproof layer 4 is smaller than the width of the second waterproof layer 3 so that the second waterproof layer 3 has side edges on both sides; the second waterproof layer 3 includes a covering part 31 and a filling part 32; the covering part 31 covers the two side edges of the first waterproof layer 1 in the inner structure and covers the aerogel layer 2; the filling part 32 of the second waterproof layer 3 passes through the hole unit 21 of the hollow area A from top to bottom and presses against the first waterproof layer 1.

[0030] The inventors of this invention have discovered that applying the waterproof membrane provided by this invention to waterproofing projects on the roofs of old residential areas is not only lightweight, but also effectively improves the flame retardant and thermal insulation properties of the waterproof membrane.

[0031] Preferably, the widths of the hollow areas A on both sides of the aerogel layer 2 are equal, and the width of the hollow area A on either side is 0.5%-2% of the width of the aerogel layer 2. The inventors of this invention have found that this preferred configuration facilitates construction operations.

[0032] In a preferred embodiment, the distance between the outer side of any hollow area A in the aerogel layer 2 and the edge of the aerogel layer 2 is 40mm-60mm.

[0033] In this invention, the outer side of the hollow area A refers to the side that is closest to the edge of the aerogel layer 2.

[0034] Preferably, any one side of the hollow area A in the aerogel layer 2 contains a plurality of porous units 21, and the total area of ​​the plurality of porous units 21 is 0.02m² relative to each square meter of the hollow area A. 2 -0.15m 2 The inventors of this invention have discovered that, in this preferred embodiment, the first waterproof layer 1 and the second waterproof layer 3 can be tightly bonded together, which reduces the weight of the waterproof membrane while effectively improving its thermal insulation performance.

[0035] In a preferred embodiment, the width of the aerogel layer 2 is 97%-99% of the width of the first waterproof layer 1.

[0036] Preferably, the width of the first waterproof layer 1 is 1990mm-2010mm.

[0037] For example, in one specific embodiment of the present invention, the width of the first waterproof layer 1 is 2006 mm, and the width of the aerogel layer 2 is 1980 mm.

[0038] Preferably, the thickness of the first waterproof layer 1 and the thickness of the second waterproof layer 3 are each independently 0.5mm-1mm. For example, in one specific embodiment of the present invention, the thickness of the first waterproof layer 1 is 1mm; the thickness of the second waterproof layer 3 is 1mm.

[0039] Preferably, the materials forming the first waterproof layer 1 and the materials forming the second waterproof layer 3 are both TPO materials.

[0040] In a preferred embodiment, both the first waterproof layer 1 and the second waterproof layer 3 are homogeneous TPO sheets or TPO sheets reinforced with mesh fabric.

[0041] Preferably, the thickness of the aerogel layer 2 is 0.1mm-0.5mm, and the thickness of the fireproof layer 4 is 0.2mm-1mm. Exemplarily, in one specific embodiment of the present invention, the thickness of the aerogel layer 2 is 0.5mm; and the thickness of the fireproof layer 4 is 1mm.

[0042] Preferably, the width of the fireproof layer 4 is 95%-99% of the width of the second waterproof layer 3.

[0043] Preferably, the width of the second waterproof layer 3 is 1990mm-2010mm.

[0044] For example, in one specific embodiment of the present invention, the width of the second waterproof layer 3 is 2006 mm, and the width of the fireproof layer 4 is 1920 mm.

[0045] In a preferred embodiment, the aerogel layer 2 is a silica aerogel film.

[0046] The present invention does not have any particular requirements on the formation method of the hollow area A in the aerogel layer 2, and those skilled in the art can choose according to their needs. Exemplarily, a pore-opening device is used to open a commercially available silica aerogel film to form a hollow area A containing multiple pore units 21.

[0047] The present invention does not have any particular requirements on the shape of the hole unit 21, as long as the total area of ​​the plurality of hole units 21 relative to each 1 square meter of the hollow area A is 0.02 m². 2 -0.15m 2 That is, those skilled in the art can choose according to their needs.

[0048] Preferably, the material forming the fireproof layer 4 is a fireproof coating.

[0049] Preferably, the fire-retardant coating contains inorganic fibers and / or an intumescent flame retardant.

[0050] Exemplary, in some specific embodiments of the present invention, the inorganic fiber is aluminosilicate ceramic fiber and / or high-silica glass fiber; the intumescent flame retardant is a combination of 10-15 parts by weight of ammonium polyphosphate, 5-8 parts by weight of charring agent, 1-3 parts by weight of gas source and 1-5 parts by weight of piperazine pyrophosphate, wherein the charring agent is pentaerythritol and / or lignin modifier, and the gas source is selected from at least one of urea, melamine or polyamide.

[0051] The present invention does not impose any particular requirements on the preparation method of the waterproof membrane, and those in the art can choose according to their needs.

[0052] For example, the method for preparing the waterproof membrane of the present invention includes:

[0053] S1: The formulation forming the waterproof layer is extruded using a single-screw extruder I to obtain a first waterproof layer 1 with a thickness of 1.0 mm;

[0054] S2: Select a silica aerogel film with a thickness of 0.5mm and a pre-cut area A with a hole-opening machine as aerogel layer 2. Perform a first pressure roller treatment on the aerogel layer 2 and the first waterproof layer 1 to achieve the bonding of the aerogel layer 2 and the first waterproof layer 1 so that the two sides of the first waterproof layer 1 are symmetrically distributed with respect to the center of the first waterproof layer 1, and obtain intermediate product I.

[0055] S3: The formulation for forming the waterproof layer is melted using a single screw extruder II to obtain a melt product. The melt product is then processed by a second pressure roller to cover the two sides of the first waterproof layer 1 in the intermediate product I and the aerogel layer 2 in the intermediate product I to form a second waterproof layer 3; thus obtaining intermediate product II.

[0056] S4: Using a spraying machine, a fire-retardant coating with a mass fraction of 20 wt% (containing inorganic fibers and intumescent flame retardants in a mass ratio of 1:2) is sprayed onto the surface of the second waterproof layer 3 in the intermediate product II (spraying thickness of 1 mm) to form a fire-retardant layer 4, and the width of the fire-retardant layer 4 is smaller than the width of the second waterproof layer 3 to obtain a waterproof membrane.

[0057] The present invention does not impose any particular requirements on the formulation of the waterproof layer, and those skilled in the art can select it as needed. For example, the formulation of the waterproof layer is a combination of 50-60 parts by weight of polyolefin elastomer, 30-40 parts by weight of block polypropylene resin, and 2-4 parts by weight of color masterbatch.

[0058] This invention does not impose any special requirements on the extrusion molding conditions, and those skilled in the art can select them as needed. For example, in a specific embodiment of this invention, the screw temperature settings for the single-screw extruder I are: feeding section 170-180℃, plasticizing section 180-200℃, metering section 200-210℃, die temperature 190-200℃, and screw speed 10-40 rpm.

[0059] The present invention does not have any particular requirements on the model of the single screw extruder I and the single screw extruder II, and those skilled in the art can choose according to their needs.

[0060] The present invention does not impose any special requirements on the conditions of the melting process, and those skilled in the art can select them as needed.

[0061] The present invention does not have special requirements for the treatment of the first pressure roller. It is only necessary to achieve a tight fit between the first waterproof layer 1 and the aerogel layer 2. The art can make selections as needed.

[0062] The present invention does not have any special requirements for the model of the spraying machine, and those skilled in the art can select it according to their needs.

[0063] The present invention does not have special requirements for the conditions of the second pressure roller treatment. It is only necessary to ensure that the second waterproof layer 3 tightly covers the two sides of the first waterproof layer 1 and tightly covers the aerogel layer 2, and that there are no material accumulation patterns or material shortages on the surface of the first waterproof layer 1 and the surface of the second waterproof layer 3 in the intermediate product II. Those skilled in the art can make the selection as needed.

[0064] It should be noted that in this invention, both the first and second pressure roller treatments are performed using a roller press. This invention does not have any particular requirements regarding the model of the roller press; those skilled in the art can select one as needed.

[0065] The preferred embodiments of the present invention have been described in detail above; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various technical features in any other suitable manner. These simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A waterproof membrane, characterized in that, The waterproof membrane consists of a surface structure and an inner structure; The inner structure includes a first waterproof layer (1) and an aerogel layer (2) stacked in sequence. The width of the aerogel layer (2) is smaller than the width of the first waterproof layer (1) so that the first waterproof layer (1) has side edges on both sides. The aerogel layer (2) has hollow areas (A) on both sides. The surface structure includes a second waterproof layer (3) and a fireproof layer (4), and the width of the fireproof layer (4) is smaller than the width of the second waterproof layer (3) so that the second waterproof layer (3) has side edges on both sides; the second waterproof layer (3) includes a covering part (31) and a filling part (32); the covering part (31) covers the two sides of the first waterproof layer (1) in the inner structure and covers the aerogel layer (2); the filling part (32) of the second waterproof layer (3) passes through the hole unit (21) of the hollow area (A) from top to bottom and presses against the first waterproof layer (1).

2. The waterproof membrane according to claim 1, wherein, The width of the hollow area (A) on both sides of the aerogel layer (2) is equal, and the width of the hollow area (A) on either side is 0.5%-2% of the width of the aerogel layer (2).

3. The waterproof membrane according to claim 1 or 2, wherein, The distance between the outer side of any hollow area (A) in the aerogel layer (2) and the side of the aerogel layer (2) is 40mm-60mm.

4. The waterproof membrane according to claim 1 or 2, wherein, The aerogel layer (2) contains multiple porous units (21) in any one of the hollow areas (A), and the total area of ​​the multiple porous units (21) is 0.02m² relative to each 1 square meter of the hollow area (A). 2 -0.15m 2 .

5. The waterproof membrane according to claim 1 or 2, wherein, The width of the aerogel layer (2) is 97%-99% of the width of the first waterproof layer (1).

6. The waterproof membrane according to claim 1 or 2, wherein, The width of the first waterproof layer (1) is 1990mm-2010mm.

7. The waterproof membrane according to claim 1, wherein, The thickness of the first waterproof layer (1) and the thickness of the second waterproof layer (3) are each 0.5mm-1mm.

8. The waterproof membrane according to claim 1, wherein, The thickness of the aerogel layer (2) is 0.1mm-0.5mm, and the thickness of the fireproof layer (4) is 0.2mm-1mm.

9. The waterproof membrane according to claim 1 or 2, wherein, The materials forming the first waterproof layer (1) and the second waterproof layer (3) are both TPO materials.

10. The waterproof membrane according to claim 1 or 2, wherein, The aerogel layer (2) is a silica aerogel film.

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