Durable modified asphalt waterproofing membrane and manufacturing process thereof

Abstract

The application discloses a durable modified asphalt waterproof coiled material and a manufacturing process thereof. The waterproof coiled material comprises a reel, waterproof coiled material is wound on the reel, and the waterproof coiled material comprises, from top to bottom, a polyethylene adhesive layer, a first modified asphalt layer, a polyester glass fiber layer, a polyurethane adhesive layer, an asbestos cloth layer, a second modified asphalt layer, a moisture absorption interlayer, a third modified asphalt layer, a composite base layer and a polyester base adhesive layer. The waterproof coiled material is provided with side sealing tapes on two sides, the side sealing tapes are provided with moisture guide holes corresponding to the moisture absorption interlayer, and moisture absorption tapes are arranged outside the side sealing tapes.

Description

Technical Field

[0001] This invention relates to the field of waterproof membrane technology, specifically to a durable modified bitumen waterproof membrane and its manufacturing process. Background Technology

[0002] With the rapid development of the construction industry, the demand for waterproofing materials is increasing. Durable modified bitumen waterproofing membranes, as an important waterproofing material, are widely used in building waterproofing projects. However, traditional modified bitumen waterproofing membranes have some shortcomings, such as poor durability and easy aging, and cannot meet the requirements for long-term use.

[0003] Therefore, it is necessary to provide a durable modified bitumen waterproof membrane and its manufacturing process to solve the problems mentioned in the background art. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a durable modified bitumen waterproof membrane, comprising a roll, on which a waterproof membrane is wound, the waterproof membrane comprising, from top to bottom, a polyethylene adhesive layer, a first modified bitumen layer, a polyester fiberglass layer, a polyurethane adhesive layer, an asbestos cloth layer, a second modified bitumen layer, a moisture-absorbing interlayer, a third modified bitumen layer, a composite base layer, and a polyester base layer;

[0005] Furthermore, the waterproof membrane is provided with side sealing strips on both sides, and the side sealing strips are provided with moisture-guiding holes corresponding to the moisture-absorbing interlayer, and the side sealing strips are provided with moisture-absorbing strips on the outside.

[0006] Preferably, the moisture-absorbing interlayer has uniformly distributed perforations, which are filled with asphalt thin columns, and the upper and lower ends of the asphalt thin columns are connected to the second modified asphalt layer and the third modified asphalt layer, respectively.

[0007] Preferably, the moisture-absorbing interlayer includes, from top to bottom, a first glass fiber layer, a first asbestos fiber layer, a first meltblown fiber layer, a flexible interlayer, a second meltblown fiber layer, a second asbestos fiber layer, and a second glass fiber layer.

[0008] Preferably, the flexible interlayer comprises overlapping layers of soft steel wire mesh and ceramic particles.

[0009] Preferably, the moisture-absorbing strip includes, from the outside to the inside, a polyester rubber film, a ceramic fiber lining, a C-shaped steel wire mesh, and moisture-absorbing strips, with the moisture-absorbing strips corresponding to the moisture-guiding holes.

[0010] Preferably, the moisture-absorbing strip comprises overlapping layers of glass fiber cotton and talcum powder.

[0011] Preferably, the upper and lower surfaces of the moisture-absorbing tape are respectively provided with a first isolation film, and the lower surface of the waterproof membrane is provided with a second isolation film.

[0012] A manufacturing process for a durable modified bitumen waterproof membrane includes the following steps:

[0013] S1. The polyethylene adhesive layer, the first modified asphalt layer and the polyester fiberglass layer are stacked in sequence and heated to temperature T for hot melt bonding to form treatment layer one.

[0014] S2. Layer the first treatment layer, the polyurethane adhesive layer, and the asbestos cloth layer in sequence, and heat them to temperature T for hot melt bonding to form the second treatment layer.

[0015] S3. The second modified asphalt layer, the moisture-absorbing interlayer and the third modified asphalt layer are stacked in sequence and heated to temperature T for hot melt bonding to form the third treatment layer;

[0016] S4. Layer the second treatment layer, the third treatment layer, the composite base layer and the polyester adhesive layer in sequence, and heat them to temperature T for hot melt bonding to form a waterproof membrane.

[0017] S5. Press the side sealing tape and moisture-absorbing tape onto both sides of the waterproof membrane in sequence, heat to temperature T for hot melt bonding, and then bond the second release film onto the lower surface of the waterproof membrane. Bond the first release film onto the upper and lower surfaces of the moisture-absorbing tape, and then roll it onto the roll.

[0018] In step S3, the pretreatment process of the moisture-absorbing interlayer includes:

[0019] S301. Ceramic particles are evenly laid on the soft steel wire mesh layer, and a small amount of mist-like adhesive is sprayed onto the surface of the soft steel wire mesh layer to bond the ceramic particles with the soft steel wire mesh and form a flexible sandwich layer.

[0020] S302. The first meltblown fiber layer and the second meltblown fiber layer are sequentially sprayed onto the upper and lower surfaces of the flexible interlayer to form a first spray treatment layer. Then, the first asbestos fiber layer and the second asbestos fiber layer are sequentially sprayed onto the upper and lower surfaces of the first spray treatment layer to form a second spray treatment layer. Then, the first glass fiber layer and the second glass fiber layer are sequentially sprayed onto the upper and lower surfaces of the second spray treatment layer to form a third spray treatment layer.

[0021] S303. Prepare a perforated steel coil with corresponding perforations, attach the perforated steel coil to the surface of the spray treatment layer three, and punch and cut it to form a perforated treatment layer with perforations. Then fill the perforations in the perforated treatment layer with molten modified asphalt and cool it.

[0022] In step S5, the pretreatment process for the side sealing tape and the moisture-absorbing tape includes:

[0023] S501. The glass fiber cotton layer in the moisture-absorbing strip is applied by multiple overlapping spraying processes. After each glass fiber cotton layer is completed, talcum powder is evenly sprayed onto the glass fiber cotton layer. After n layers of glass fiber cotton are stacked, a moisture-absorbing strip is formed.

[0024] S502. C-shaped steel wire mesh, ceramic fiber cotton sleeve and polyester tire film are wrapped around the outside of the moisture-absorbing strip in sequence, and then solidified to form a moisture-absorbing strip.

[0025] S503. Align one side opening of the side sealing tape with the moisture-absorbing tape and bond them together with adhesive.

[0026] Compared with the prior art, the present invention provides a durable modified bitumen waterproof membrane and its manufacturing process, which has the following beneficial effects:

[0027] 1. The present invention, through the designed layered structure and preparation process of polyethylene adhesive layer, first modified asphalt layer, polyester fiberglass layer, polyurethane adhesive layer, asbestos cloth layer, second modified asphalt layer, moisture-absorbing interlayer, third modified asphalt layer, composite tire base layer and polyester tire adhesive layer, greatly improves the original material properties and preset structural properties of the processed layer in each preparation process.

[0028] 2. In this invention, the waterproof layer near the base layer is designed as a superimposed structure of a second modified asphalt layer, a moisture-absorbing interlayer, and a third modified asphalt layer. The water vapor that permeates from the upper second modified asphalt layer and the lower third modified asphalt layer is absorbed by the moisture-absorbing interlayer and transferred to the side moisture-absorbing strip.

[0029] 3. The moisture-absorbing interlayer structure design in this invention has strong toughness and fluffiness, which can form a three-dimensional space between the second and third modified bitumen layers in the waterproof membrane, which can well compensate for their deformation and displacement, enhance the deformation flexibility of the horizontal and vertical areas, and improve the tensile strength, ductility and crack resistance of the waterproof membrane. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the modified bitumen waterproof membrane structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the waterproof membrane structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the asphalt thin column structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the moisture-absorbing interlayer structure of the present invention;

[0034] Figure 5 This is a schematic diagram of the flexible sandwich structure of the present invention;

[0035] Figure 6 This is a schematic diagram of the moisture-absorbing tape structure of the present invention;

[0036] In the diagram: 1. Roll; 2. Waterproof membrane; 3. Side sealing tape; 4. First release membrane; 5. Moisture-absorbing tape; 6. Second release membrane; 21. Polyethylene adhesive layer; 22. First modified bitumen layer; 23. Polyester fiberglass layer; 24. Polyurethane adhesive layer; 25. Asbestos cloth layer; 26. Second modified bitumen layer; 27. Moisture-absorbing interlayer; 28. Third modified bitumen layer; 29. ​​Composite base layer; 210. Polyester base layer; 211. Asphalt column; 271. Perforation; 272. 273. First glass fiber layer; 274. First asbestos fiber layer; 275. First meltblown fiber layer; 276. Flexible interlayer; 277. Second meltblown fiber layer; 278. Second asbestos fiber layer; 279. Second glass fiber layer; 2701. Soft steel wire mesh layer; 2702. Ceramic particles; 31. Moisture-wicking hole; 52. Polyester rubber film; 53. C-shaped steel wire mesh; 54. Moisture-absorbing strip; 541. Glass fiber cotton layer; 542. Talc powder. Detailed Implementation

[0037] Reference Figure 1-6 The present invention provides a technical solution: a durable modified bitumen waterproof membrane, comprising a roll 1, on which a waterproof membrane 2 is wound, the waterproof membrane 2 comprising, from top to bottom, a polyethylene adhesive layer 21, a first modified bitumen layer 22, a polyester fiberglass layer 23, a polyurethane adhesive layer 24, an asbestos cloth layer 25, a second modified bitumen layer 26, a moisture-absorbing interlayer 27, a third modified bitumen layer 28, a composite base layer 29, and a polyester base layer 210;

[0038] Furthermore, the waterproof membrane 2 is provided with side sealing strips 3 on both sides, and the side sealing strips 3 are provided with moisture guiding holes 31 corresponding to the moisture-absorbing interlayer 27, and the side sealing strips 3 are provided with moisture-absorbing strips 5 on the outside.

[0039] In this embodiment, the moisture-absorbing interlayer 27 is provided with uniformly distributed perforations 271, and the perforations 271 are filled with asphalt thin columns 211. The upper and lower ends of the asphalt thin columns 211 are connected to the second modified asphalt layer 26 and the third modified asphalt layer 28, respectively. That is, the second modified asphalt layer 26 and the third modified asphalt layer 28 are connected by asphalt thin columns 211. Therefore, a gap can be left between the second modified asphalt layer 26 and the third modified asphalt layer 28, and the moisture-absorbing interlayer 27 is provided in the gap. The gap is close to the base layer. In addition to the structural characteristics of the waterproof membrane, the design structure of the gap forms a three-dimensional space between the second modified asphalt layer and the third modified asphalt layer, which can well compensate for its deformation and displacement. This enhances the deformation flexibility of the horizontal and vertical areas and improves the tensile strength, ductility and crack resistance of the waterproof membrane.

[0040] In this embodiment, the moisture-absorbing interlayer 27 includes, from top to bottom, a first glass fiber layer 272, a first asbestos fiber layer 273, a first meltblown fiber layer 274, a flexible interlayer 275, a second meltblown fiber layer 276, a second asbestos fiber layer 277, and a second glass fiber layer 278. On the one hand, this allows the moisture-absorbing interlayer to have both high toughness and slight bulkiness. On the other hand, the first glass fiber layer 272 and the second glass fiber layer 278 are mainly used to enhance the guidance and transfer of water vapor. The first asbestos fiber layer is mainly used to withstand thermal expansion and thermal shock under high-temperature conditions, thereby enhancing toughness. The first meltblown fiber layer 274 and the second meltblown fiber layer 276 are mainly used to improve the bulkiness and hydrophobicity of the moisture-absorbing interlayer 27, thereby facilitating the attraction and transfer of water vapor from the area near the second modified bitumen layer 26 and the third modified bitumen layer 28 to the area near the moisture-absorbing zone 5.

[0041] In this embodiment, the flexible interlayer 275 includes an overlapping soft steel wire mesh layer 2751 and ceramic particles 2752, which improves porosity and flexibility.

[0042] In this embodiment, the moisture-absorbing strip 5 includes a polyester tire film 51, a ceramic fiber cotton sleeve 52, a C-shaped steel wire mesh 53 and a moisture-absorbing strip 54 arranged sequentially from the outside to the inside, and the moisture-absorbing strip 54 corresponds to the moisture-guiding hole 31.

[0043] In this embodiment, the moisture-absorbing strip 54 includes an overlapping glass fiber cotton layer 541 and talc powder 542, so that the absorbed moisture can be fully applied to the talc powder.

[0044] In this embodiment, the upper and lower surfaces of the moisture-absorbing tape 5 are respectively provided with a first isolation film 4, and the lower surface of the waterproof roll 2 is provided with a second isolation film 6.

[0045] In its specific implementation, it includes the following steps:

[0046] S1. The polyethylene adhesive layer 21, the first modified asphalt layer 22 and the polyester fiberglass layer 23 are stacked in sequence and heated to temperature T1 for hot melt bonding to form the first treatment layer.

[0047] S2. Layer the first treatment layer, the polyurethane adhesive layer 24 and the asbestos cloth layer 25 in sequence, and heat them to temperature T2 for hot melt bonding to form the second treatment layer.

[0048] S3. The second modified asphalt layer 26, the moisture-absorbing interlayer 27 and the third modified asphalt layer 28 are stacked in sequence and heated to temperature T3 for hot melt bonding to form the third treatment layer.

[0049] S4. Layer the second treatment layer, the third treatment layer, the composite base layer 29 and the polyester adhesive layer 210 in sequence, and heat them to temperature T4 for hot melt bonding to form the waterproof membrane 2.

[0050] S5. Side sealing tape 3 and moisture-absorbing tape 5 are pressed onto both sides of the waterproof membrane 2 in sequence, and heated to temperature T5 for hot melt bonding. A second release film 6 is bonded to the lower surface of the waterproof membrane 2, and a first release film 4 is bonded to the upper and lower surfaces of the moisture-absorbing tape 5. Then, it is wound onto the roll 1.

[0051] In this embodiment, the pretreatment process of the moisture-absorbing interlayer 27 in step S3 includes:

[0052] S301. Ceramic particles 2732 are evenly spread on the soft steel wire mesh layer, and a small amount of mist-like adhesive is sprayed onto the surface of the soft steel wire mesh layer to bond the ceramic particles 2732 with the soft steel wire mesh to form a flexible interlayer 275.

[0053] S302. The first meltblown fiber layer 274 and the second meltblown fiber layer 276 are sequentially sprayed onto the upper and lower surfaces of the flexible interlayer 275 to form a first spray treatment layer. Then, the first asbestos fiber layer 273 and the second asbestos fiber layer 277 are sequentially sprayed onto the upper and lower surfaces of the first spray treatment layer to form a second spray treatment layer. Then, the first glass fiber layer 272 and the second glass fiber layer 278 are sequentially sprayed onto the upper and lower surfaces of the second spray treatment layer to form a third spray treatment layer.

[0054] S303. Prepare a perforated steel coil corresponding to the perforation 271, attach the perforated steel coil to the surface of the spray treatment layer three, and punch and cut it to form a perforated treatment layer with perforations 271. Then fill the perforations in the perforated treatment layer with molten modified asphalt and cool it.

[0055] In this embodiment, the pretreatment process of the side sealing tape 3 and the moisture-absorbing tape 5 in step S5 includes:

[0056] S501. The glass fiber cotton layer 541 in the moisture-absorbing strip 54 is applied by multiple overlapping spraying processes. After each glass fiber cotton layer 541 is completed, talcum powder is evenly sprayed onto the glass fiber cotton layer 541. After n layers of glass fiber cotton layer 541 are stacked, the moisture-absorbing strip 54 is formed.

[0057] S502. C-shaped steel wire mesh 53, ceramic fiber cotton sleeve 52 and polyester tire film 51 are wrapped around the outside of the moisture-absorbing strip 54 in sequence, and then solidified to form a moisture-absorbing strip 5.

[0058] S503. Align one side opening of the side sealing tape 3 with the moisture-absorbing tape 5 and bond them together with adhesive.

[0059] The above description is merely a preferred embodiment of the invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A durable modified bitumen waterproofing membrane comprising a reel (1) on which is wound a waterproofing membrane (2), characterized in that, The waterproof roll material (2) comprises, from top to bottom, a polyethylene adhesive layer (21), a first modified asphalt layer (22), a polyester glass fiber layer (23), a polyurethane adhesive layer (24), a asbestos cloth layer (25), a second modified asphalt layer (26), a moisture absorption interlayer (27), a third modified asphalt layer (28), a composite base layer (29), and a polyester base adhesive layer (210). The waterproof roll material (2) is provided with side sealing tapes (3) on both sides, the side sealing tapes (3) are provided with moisture guide holes (31) corresponding to the moisture absorption interlayer (27), and the side sealing tapes (3) are provided with moisture absorption tapes (5) on the outer sides. The moisture absorption tape (5) comprises, from outside to inside, a polyester base adhesive film (51), a ceramic fiber wool cover (52), a C-shaped steel wire mesh (53), and a moisture absorption strip (54), the moisture absorption strip (54) corresponds to the moisture guide hole (31). The moisture absorption interlayer (27) is provided with uniformly distributed perforations (271) filled with asphalt thin columns (211), the upper and lower ends of the asphalt thin columns (211) are connected with the second modified asphalt layer (26) and the third modified asphalt layer (28) respectively. The moisture absorption interlayer (27) comprises, from top to bottom, a first glass fiber layer (272), a first asbestos fiber layer (273), a first melt-blown fiber layer (274), a flexible interlayer (275), a second melt-blown fiber layer (276), a second asbestos fiber layer (277), and a second glass fiber layer (278); wherein the first glass fiber layer (272) and the second glass fiber layer (278) are used for enhancing the guidance and transmission of water vapor, the first asbestos fiber layer (273) is used for thermal expansion and thermal shock in a high-temperature environment, and the toughness is enhanced, the first melt-blown fiber layer (274) and the second melt-blown fiber layer (276) are used for improving the fluffiness and hydrophobicity of the moisture absorption interlayer (27), thereby facilitating the transmission of water vapor in the vicinity of the second modified asphalt layer (26) and the third modified asphalt layer (28) to the vicinity of the moisture absorption tape (5).

2. The durable modified bitumen waterproofing membrane according to claim 1, wherein, The flexible interlayer (275) comprises a soft steel wire mesh layer (2751) and ceramic particles (2752) arranged in register.

3. The durable modified bitumen waterproofing membrane according to claim 1, wherein, The moisture absorption strip (54) comprises a glass fiber wool layer (541) and talcum powder (542) arranged in register.

4. The durable modified bitumen waterproofing membrane according to claim 1, wherein, The upper and lower surfaces of the moisture absorption tape (5) are respectively provided with first isolation films (4), and the lower surface of the waterproof roll material (2) is provided with a second isolation film (6).

5. The process for manufacturing a durable modified bitumen waterproofing membrane according to any one of claims 1 to 4, characterized in that, It comprises the following steps: S1, sequentially stack the polyethylene adhesive layer (21), the first modified asphalt layer (22), and the polyester glass fiber layer (23), and heat to a temperature T(1) for hot melt bonding to form a treatment layer one; S2, sequentially stack the treatment layer one, the polyurethane adhesive layer (24), and the asbestos cloth layer (25), and heat to a temperature T(2) for hot melt bonding to form a treatment layer two; S3, sequentially stack the second modified asphalt layer (26), the moisture absorption interlayer (27), and the third modified asphalt layer (28), and heat to a temperature T(3) for hot melt bonding to form a treatment layer three; S4, sequentially stack the processing layer two, the processing layer three, the composite base layer (29) and the polyester base rubber layer (210), and heat to a temperature T (4) for hot melt bonding to form the waterproof roll material (2); S5, sequentially press and paste the side sealing tape (3) and the moisture absorption tape (5) on both sides of the waterproof roll material (2), and heat to a temperature T (5) for hot melt bonding, and bond the second isolation film (6) to the lower surface of the waterproof roll material (2), bond the first isolation film (4) to the upper and lower surfaces of the moisture absorption tape (5), and then wind on the reel (1).

6. The process for manufacturing a durable modified bitumen waterproofing membrane according to claim 5, characterized in that, In the S3 step, the pretreatment process of the moisture absorption interlayer (27) includes: S301, uniformly lay ceramic particles (2732) on the soft steel wire mesh layer, and spray a small amount of adhesive in mist form on the surface of the soft steel wire mesh layer, so that the ceramic particles (2732) are bonded to the soft steel wire mesh to form a flexible interlayer (275); S302, spray the first melt-blown fiber layer (274) and the second melt-blown fiber layer (276) on the upper and lower surfaces of the flexible interlayer (275) respectively in sequence to form a sprayed treatment layer one, then spray the first asbestos fiber layer (273) and the second asbestos fiber layer (277) on the upper and lower surfaces of the sprayed treatment layer one respectively in sequence to form a sprayed treatment layer two, and then spray the first glass fiber layer (272) and the second glass fiber layer (278) on the upper and lower surfaces of the sprayed treatment layer two respectively in sequence to form a sprayed treatment layer three; S303, prepare a perforated steel roll corresponding to the perforations (271), attach the perforated steel roll to the surface of the sprayed treatment layer three, and stamp and cut to form a perforated treatment layer with perforations (271), and then fill the perforations in the perforated treatment layer with molten modified bitumen and cool.

7. The durable modified bitumen waterproofing membrane and process for producing the same according to claim 5, wherein the modified bitumen is a polymer modified bitumen. In the S5 step, the pretreatment process of the side sealing tape (3) and the moisture absorption tape (5) includes: S501, the glass fiber cotton layer (541) in the moisture absorption strip (54) is formed by multiple times of superimposed spraying process, and after each time of forming the glass fiber cotton layer (541), talcum powder is uniformly sprayed on the glass fiber cotton layer (541), and after superimposing n layers of glass fiber cotton layers (541), the moisture absorption strip (54) is formed; S502, wrap the C-shaped steel wire mesh (53), the ceramic fiber cotton cover (52) and the polyester base rubber film (51) on the outside of the moisture absorption strip (54) in sequence, and solidify to form the moisture absorption tape (5); S503, align the side opening of the side sealing tape (3) with one side of the moisture absorption tape (5), and bond by adhesive.

Images