Exposed weather-resistant layer, preparation method and exposed self-adhesive modified asphalt waterproof coiled material and application thereof

Abstract

The application belongs to the field of building waterproof materials, and discloses an exposed weather-resistant layer, a preparation method thereof, and an exposed self-adhesive modified asphalt waterproof coiled material and application. The exposed weather-resistant layer comprises, from top to bottom, an anti-aging functional layer, a barrier functional layer, a main body layer and an interface bonding layer. The material of the interface bonding layer comprises the following components: a thermoplastic resin and wax powder, and optionally a first filler and / or asphalt masterbatch. The exposed weather-resistant layer has the characteristics of high weather resistance, excellent dimensional stability, and excellent compatibility and adhesion with the asphalt layer of the waterproof coiled material.

Description

Technical Field

[0001] This invention belongs to the field of building waterproofing materials, and more specifically, relates to an exposed weather-resistant layer and its preparation method, and an exposed self-adhesive modified bitumen waterproof membrane and its application. Background Technology

[0002] Current Status of Modified Bituminous Roofing

[0003] Polymer-modified bitumen waterproof membranes are a crucial type of waterproofing product. For exposed roof applications, modified bitumen waterproof membranes primarily consist of mineral-granule-faced membranes, installed using a hot-melt method. This method suffers from the drawback of requiring open flames for application. While mineral granules offer excellent weather resistance, their high particle size and heavy roll weight lead to inefficient handling and installation.

[0004] Advantages of self-adhesive roll materials

[0005] Self-adhesive modified bitumen rolls have self-adhesive properties and can be applied cold without open flame during construction. They are convenient, safe and environmentally friendly, and are widely used in practical applications.

[0006] Current Status of Self-Adhesive Sheet Materials

[0007] However, the surface material of self-adhesive modified bitumen rolls is often PE film, PET film, etc. Due to the poor weather resistance of these surface materials, prolonged exposure leads to powdering and cracking, damaging the modified bitumen and causing it to lose its waterproofing function. Therefore, a protective layer needs to be applied promptly after the construction of self-adhesive modified bitumen rolls to protect them from UV damage, thus limiting the material's application range.

[0008] Therefore, based on the above, there is an urgent need to develop a self-adhesive modified bitumen waterproof membrane that can be used in the open. Summary of the Invention

[0009] The purpose of this invention is to address the shortcomings of existing technologies by proposing an exposed weather-resistant layer, its preparation method, and an exposed self-adhesive modified bitumen waterproof membrane and its application. The exposed weather-resistant layer of this invention possesses high weather resistance, excellent dimensional stability, and excellent compatibility and adhesion with the bitumen layer of the waterproof membrane.

[0010] To achieve the above objectives, the first aspect of the present invention provides an exposed weather-resistant layer, the exposed weather-resistant layer comprising, from top to bottom, an aging-resistant functional layer, a barrier functional layer, a main body layer and an interface bonding layer;

[0011] The material of the interface bonding layer includes the following components: thermoplastic resin and wax powder, and optionally includes a first filler and / or asphalt masterbatch.

[0012] According to the present invention, preferably, the material of the interface bonding layer comprises the following components by weight: 65-95 parts of thermoplastic resin, 0-20 parts of first filler, 0.2-2.5 parts of wax powder, and 0-10 parts of asphalt masterbatch; preferably, the material of the interface bonding layer comprises the following components by weight: 70-85 parts of thermoplastic resin, 0-20 parts of first filler, 1-2.5 parts of wax powder, and 2-6 parts of asphalt masterbatch.

[0013] According to the present invention, preferably, the thermoplastic resin is a mixture of polyolefin resin and functionalized polyolefin resin, wherein the ratio of polyolefin resin to functionalized polyolefin resin is (70-85):(5-10); preferably, the functionalized polyolefin resin is maleic anhydride-grafted polyolefin resin; more preferably, the maleic anhydride-grafted polyolefin resin is at least one of maleic anhydride-grafted polyethylene, maleic anhydride-grafted polypropylene, and maleic anhydride-grafted ethylene-vinyl acetate.

[0014] According to the present invention, preferably, the wax powder is at least one selected from polyethylene wax, oxidized polyethylene wax, ethylene-acrylic wax, ethylene-vinyl acetate wax and polyamide wax.

[0015] According to the present invention, preferably, the first filler is at least one selected from heavy calcium carbonate, titanium dioxide, and light calcium carbonate.

[0016] According to the present invention, preferably, the asphalt masterbatch is prepared by a torque rheometer from rubber, low-density polyethylene, first asphalt and first tackifier; the mass ratio of the rubber, low-density polyethylene, first asphalt and first tackifier is (7-20):(15-20):(5-10):(0.1-0.5).

[0017] According to the present invention, preferably, the aging-resistant functional layer is at least one of fluorocarbon coating, acrylic coating, polyolefin film, PVC film, PET film, PVDF film and ASA film.

[0018] In this invention, the aging-resistant functional layer has the characteristics of aging resistance, wear resistance, and the ability to be color-designed and pattern-printed.

[0019] According to the present invention, preferably, the barrier functional layer is a metal layer, preferably at least one of aluminum foil, copper foil and stainless steel foil; the thickness of the barrier functional layer is 6-30 μm.

[0020] In this invention, the barrier layer reflects and blocks the light transmitted through the aging-resistant layer, preventing damage to the waterproof membrane asphalt layer from ultraviolet light and other wavelengths of light. The barrier layer also acts as an oxygen and oil barrier, protecting against the loss of lightweight components in the asphalt and improving the weather resistance of the asphalt layer by blocking oxygen.

[0021] According to the present invention, preferably, the main body layer is a resin film, preferably at least one of PET film, modified PET film, PP film, PA / PE co-extruded film, PA / PP co-extruded film and EVOH co-extruded film.

[0022] In this invention, the main body layer can provide better dimensional stability and mechanical properties.

[0023] A second aspect of the present invention provides a method for preparing the aforementioned exposed weather-resistant layer, the method comprising:

[0024] The aging-resistant functional layer, the barrier functional layer, and the upper surface of the main body layer are sequentially laminated from top to bottom; the lower surface of the main body layer is subjected to corona treatment, and the interface bonding layer material is melt-extruded and cast onto the lower surface of the main body layer, and then rolled and cooled by an anilox roller to obtain the exposed weather-resistant layer.

[0025] In this invention, the interface bonding layer is prepared with a special formula. This invention introduces asphalt and functionalized polyolefin resin into the interface bonding layer, thereby increasing the compatibility and interfacial adhesion between the interface bonding layer and the asphalt layer of the waterproof membrane. Simultaneously, to increase the long-term bonding strength between the exposed weather-resistant layer and the asphalt layer, this invention uses a knurled roller to prepare the interface bonding layer, forming an uneven surface structure. Therefore, the interface bonding layer of this invention is an organic-inorganic three-dimensional film layer. Thus, the material of the asphalt layer can penetrate into the interior of the interface bonding layer, forming a three-dimensional interlocking structure between the interface bonding layer and the asphalt layer, creating a mutual penetration zone between the weather-resistant layer and the asphalt layer.

[0026] According to the present invention, preferably, the aging-resistant functional layer (a film layer) is prepared by at least one of blown film process, bistretching process and casting process; the upper surfaces of the aging-resistant functional layer, the barrier functional layer and the main body layer are sequentially laminated from top to bottom using an adhesive process; the adhesive used in the adhesive process is a weather-resistant adhesive;

[0027] Alternatively, the aging-resistant functional layer (a coating) is prepared by coating the upper surface of the barrier functional layer using a coating process; the lower surface of the barrier functional layer and the upper surface of the main body layer are bonded together using an adhesive process; the adhesive used in the adhesive process is a weather-resistant adhesive.

[0028] A third aspect of the present invention provides an exposed self-adhesive modified bitumen waterproof membrane, the waterproof membrane comprising, from bottom to top, a release membrane layer, a bitumen layer, a reinforcing layer and the exposed weather-resistant layer.

[0029] According to the present invention, preferably, the release film layer is an anti-stick release film, preferably at least one of PE film, PP film, PET film, PA / PP co-extruded film and PA / PE co-extruded film; the coating temperature of the release film layer is controlled at 40-60℃.

[0030] According to the present invention, preferably, the reinforcing layer is at least one selected from polyester mesh, fiberglass mesh, warp-knitted fabric, and basalt fabric, and the basis weight of the reinforcing layer is 40-200 g / m². 2 .

[0031] According to the present invention, preferably, the material of the asphalt layer comprises the following components by weight: 45-60 parts of second asphalt, 10-20 parts of modifier, 1-4 parts of second tackifier, 0.2-4 parts of additive, and 10-20 parts of second filler; the coating temperature of the asphalt layer is controlled at 140-160°C.

[0032] According to the present invention, preferably, the second asphalt is 70# asphalt and / or 90# asphalt.

[0033] According to the present invention, preferably, the second tackifier is one of petroleum resin, rosin resin, terpene resin and coumarone resin.

[0034] According to the present invention, preferably, the additive is a low molecular weight propylene maleic anhydride copolymer and / or a low molecular weight ethylene maleic anhydride copolymer.

[0035] According to the present invention, preferably, the second filler is at least one selected from heavy calcium carbonate, calcium hydrogen, talc, and stone powder.

[0036] According to the present invention, preferably, the modifier is a mixture of a first modifier, a second modifier and a third modifier; the first modifier is SEP rubber; the second modifier is an acrylic acid-containing copolymer; the third modifier is at least one of SIS rubber and / or modified SIS rubber; the ratio of the first modifier, the second modifier and the third modifier is (1-7):(1-7):(5-12).

[0037] In this invention, in order to improve the long-term adhesion performance and low-temperature adhesion performance of the self-adhesive modified bitumen waterproof membrane, a mixture of SEP rubber, acrylic copolymer and SIS rubber is introduced as a modifier into the material formulation of the bitumen layer.

[0038] In this invention, the preparation method of the exposed self-adhesive modified bitumen waterproof membrane includes:

[0039] (1) Unwind and correct the winding of the reinforcing layer and the exposed weather-resistant layer;

[0040] (2) The asphalt layer is coated onto the reinforcing layer, and the coating temperature is controlled at 140-160℃;

[0041] (3) Apply a protective film layer, and control the film application temperature at 40-60℃;

[0042] (4) Correct the deviation and collect the roll.

[0043] The fourth aspect of this invention provides the application of the aforementioned exposed self-adhesive modified bitumen waterproof membrane in new roof waterproofing projects.

[0044] The beneficial effects of the technical solution of the present invention are as follows:

[0045] The exposed weather-resistant layer of this invention adheres firmly to the asphalt layer of the waterproof membrane, and the exposed weather-resistant layer of this invention does not delaminate from the asphalt layer of the waterproof membrane after long-term xenon lamp treatment and heat aging treatment, which can effectively protect the asphalt from ultraviolet damage and ensure that the waterproof membrane has good waterproof function during long-term service.

[0046] The exposed self-adhesive modified bitumen waterproof membrane of this invention features exposed use, excellent weather resistance, light weight, and convenient construction, meeting the needs of waterproofing projects for repair and new roofs. This exposed self-adhesive modified bitumen waterproof membrane requires no protective layer after construction and does not curl or warp even after prolonged exposure to sunlight. The bitumen layer and weather-resistant layer remain firmly bonded after long-term exposure, ensuring the waterproof membrane's effectiveness.

[0047] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0048] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the invention.

[0049] Figure 1 A schematic diagram of an exposed weather-resistant layer provided by the present invention is shown.

[0050] Figure 2 A schematic diagram of an exposed self-adhesive modified bitumen waterproof membrane provided by the present invention is shown.

[0051] The annotations in the attached figures are explained as follows:

[0052] 1-Aging-resistant functional layer; 2-Barrier functional layer; 3-Main layer; 4-Interface bonding layer; 5-Exposed weather-resistant layer; 6-Reinforcing layer; 7-Asphalt layer; 8-Isolation membrane layer. Detailed Implementation

[0053] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0054] In the following embodiments:

[0055] The polypropylene resin in the interface bonding layer 4 was purchased from Sinopec Y2600T.

[0056] The maleic anhydride-grafted polypropylene in the interface bonding layer 4 was purchased from ExxonMobil PO 1020.

[0057] The oxidized polyethylene wax in the interface bonding layer 4 was purchased from Honeywell AC 395;

[0058] The high-density polyethylene resin in the interface bonding layer 4 was purchased from Lotte 5350E in South Korea.

[0059] The maleic anhydride-grafted polyethylene in the interface bonding layer 4 was purchased from DuPont E528 in the United States.

[0060] The polyethylene wax in the interface bonding layer 4 was purchased from Honeywell AC-6.

[0061] The SEP rubber in the asphalt layer 7 was purchased from Shin-Etsu SEP-168-U of Japan.

[0062] The acrylic acid-containing copolymer in the asphalt layer 7 was purchased from Dow EAA 5980i;

[0063] The SIS rubber in the asphalt layer 7 was purchased from Baling Petrochemical YH1126.

[0064] The low molecular weight ethylene maleic anhydride copolymer in the asphalt layer 7 was purchased from Honeywell AC540A.

[0065] Example 1

[0066] This embodiment provides an exposed weather-resistant layer, such as Figure 1 As shown, the exposed weather-resistant layer includes, from top to bottom, an aging-resistant functional layer 1, a barrier functional layer 2, a main body layer 3, and an interface bonding layer 4.

[0067] The material of the interface bonding layer 4 comprises the following components by weight: 70 parts polypropylene resin, 5 parts maleic anhydride-grafted polypropylene, 1.2 parts oxidized polyethylene wax, and 4 parts asphalt masterbatch; wherein the asphalt masterbatch is prepared by a torque rheometer from rubber, low-density polyethylene, first asphalt, and first tackifier; the mass ratio of rubber, low-density polyethylene, first asphalt, and first tackifier is 10:20:5:0.2; the rubber is a thermoplastic elastomer purchased from Baling Petrochemical SBS1401; the low-density polyethylene is purchased from Sinopec 2426K; the first asphalt is purchased from Jingbo Petrochemical 70#; and the first tackifier is purchased from Henghe HHC-1100.

[0068] The aging-resistant functional layer 1 is a fluorocarbon coating;

[0069] The barrier layer 2 is aluminum foil;

[0070] The main body layer 3 is a modified PET film, which is selected from WAF-180Y-50 of Shanghai Ceyuan New Material Technology Co., Ltd.

[0071] This embodiment also provides a method for preparing the above-mentioned exposed weather-resistant layer, including:

[0072] The aging-resistant functional layer is prepared by coating the upper surface of the barrier functional layer using a coating process.

[0073] The lower surface of the barrier layer with the aging-resistant functional layer and the upper surface of the main body layer are bonded together by an adhesive process, and the adhesive used in the adhesive process is a weather-resistant adhesive.

[0074] The lower surface of the main body layer is subjected to corona treatment, and the interface bonding layer material is melt-extruded and cast onto the lower surface of the main body layer. After being rolled by an anilox roller (forming a concave-convex surface structure) and cooled, the exposed weather-resistant layer is obtained.

[0075] This embodiment also provides an exposed self-adhesive modified bitumen waterproof membrane, such as... Figure 2 As shown, the waterproof membrane includes, from bottom to top, a release membrane layer 8, an asphalt layer 7, a reinforcing layer 6, and the aforementioned exposed weather-resistant layer 5.

[0076] The isolation film layer 8 is a PET film;

[0077] The reinforcing layer 6 is a fiberglass mesh with a basis weight of 120 g / m². 2 ;

[0078] The material of the asphalt layer 7 includes the following components by weight: 60 parts of 90# asphalt, 6 parts of modifier (6 parts of SEP rubber, 2 parts of acrylic acid copolymer, 9 parts of SIS rubber), 2 parts of petroleum resin, 3 parts of low molecular weight propylene maleic anhydride copolymer, and 10 parts of heavy calcium carbonate.

[0079] Example 2

[0080] This embodiment provides an exposed weather-resistant layer, such as Figure 1 As shown, the exposed weather-resistant layer includes, from top to bottom, an aging-resistant functional layer 1, a barrier functional layer 2, a main body layer 3, and an interface bonding layer 4.

[0081] The material of the interface bonding layer 4 comprises the following components by weight: 75 parts polypropylene resin, 4 parts maleic anhydride-grafted polypropylene, 2.0 parts oxidized polyethylene wax, and 3 parts asphalt masterbatch; wherein the asphalt masterbatch is prepared by a torque rheometer from rubber, low-density polyethylene, first asphalt, and first tackifier; the mass ratio of rubber, low-density polyethylene, first asphalt, and first tackifier is 8:19:6:0.2; the rubber is a thermoplastic elastomer purchased from Baling Petrochemical SBS815E; the low-density polyethylene is purchased from Sinopec 2426K; the first asphalt is purchased from Jingbo Petrochemical 70#; and the first tackifier is purchased from Henghe HHC-1100.

[0082] The aging-resistant functional layer 1 is an acrylic coating;

[0083] The barrier layer 2 is a copper foil;

[0084] The main body layer 3 is a modified PET film, which is selected from WAF-180Y-50 of Shanghai Ceyuan New Material Technology Co., Ltd.

[0085] This embodiment also provides a method for preparing the above-mentioned exposed weather-resistant layer, including:

[0086] The aging-resistant functional layer is prepared by coating the upper surface of the barrier functional layer using a coating process.

[0087] The lower surface of the barrier layer with the aging-resistant functional layer and the upper surface of the main body layer are bonded together by an adhesive process, and the adhesive used in the adhesive process is a weather-resistant adhesive.

[0088] The lower surface of the main body layer is subjected to corona treatment, and the interface bonding layer material is melt-extruded and cast onto the lower surface of the main body layer. After being rolled by an anilox roller (forming a concave-convex surface structure) and cooled, the exposed weather-resistant layer is obtained.

[0089] This embodiment also provides an exposed self-adhesive modified bitumen waterproof membrane, such as... Figure 2As shown, the waterproof membrane includes, from bottom to top, a release membrane layer 8, an asphalt layer 7, a reinforcing layer 6, and the aforementioned exposed weather-resistant layer 5.

[0090] The isolation film layer 8 is a PET film;

[0091] The reinforcing layer 6 is a fiberglass mesh with a basis weight of 80 g / m². 2 ;

[0092] The material of the asphalt layer 7 includes the following components by weight: 55 parts of 90# asphalt, 4 parts of modifier (4 parts of SEP rubber, 3 parts of acrylic acid copolymer, 8 parts of SIS rubber), 1 part of rosin resin, 2 parts of low molecular weight propylene maleic anhydride copolymer, and 15 parts of heavy calcium carbonate.

[0093] Example 3

[0094] This embodiment provides an exposed weather-resistant layer, such as Figure 1 As shown, the exposed weather-resistant layer includes, from top to bottom, an aging-resistant functional layer 1, a barrier functional layer 2, a main body layer 3, and an interface bonding layer 4.

[0095] The material of the interface bonding layer 4 comprises the following components by weight: 70 parts high-density polyethylene resin, 5 parts maleic anhydride-grafted polyethylene, 1.2 parts polyethylene wax, and 4 parts asphalt masterbatch; wherein the asphalt masterbatch is prepared by a torque rheometer from rubber, low-density polyethylene, first asphalt, and first tackifier; the mass ratio of rubber, low-density polyethylene, first asphalt, and first tackifier is 9:20:5:0.2; the rubber is a thermoplastic elastomer purchased from Baling Petrochemical SBS815E; the low-density polyethylene is purchased from Sinopec 2426K; the first asphalt is purchased from Qinhuangdao Petrochemical 70#; and the first tackifier is purchased from Henghe HHC-1100.

[0096] The aging-resistant functional layer 1 is a polyolefin film;

[0097] The barrier layer 2 is aluminum foil;

[0098] The main body layer 3 is a PET film.

[0099] This embodiment also provides a method for preparing the above-mentioned exposed weather-resistant layer, including:

[0100] The aging-resistant functional layer is prepared by a blown film process.

[0101] The aging-resistant functional layer, the barrier functional layer, and the upper surface of the main body layer are sequentially laminated from top to bottom using an adhesive bonding process. The adhesive used in the adhesive bonding process is a weather-resistant adhesive.

[0102] The lower surface of the main body layer is subjected to corona treatment, and the interface bonding layer material is melt-extruded and cast onto the lower surface of the main body layer. After being rolled by an anilox roller (forming a concave-convex surface structure) and cooled, the exposed weather-resistant layer is obtained.

[0103] This embodiment also provides an exposed self-adhesive modified bitumen waterproof membrane, such as... Figure 2 As shown, the waterproof membrane includes, from bottom to top, a release membrane layer 8, an asphalt layer 7, a reinforcing layer 6, and the aforementioned exposed weather-resistant layer 5.

[0104] The isolation membrane layer 8 is a PE membrane;

[0105] The reinforcing layer 6 is a fiberglass mesh with a basis weight of 100g / m². 2 ;

[0106] The material of the asphalt layer 7 includes the following components by weight: 55 parts of 70# asphalt, 4 parts of modifier (4 parts of SEP rubber, 3 parts of acrylic acid copolymer, 8 parts of SIS rubber), 1 part of terpene resin, 2 parts of low molecular weight propylene maleic anhydride copolymer, and 15 parts of heavy calcium carbonate.

[0107] Comparative Example 1

[0108] This comparative example provides an exposed self-adhesive modified bitumen waterproof membrane. The only difference between this comparative example and Example 1 is that:

[0109] The exposed weather-resistant layer does not have an aging-resistant functional layer 1.

[0110] Comparative Example 2

[0111] This comparative example provides an exposed self-adhesive modified bitumen waterproof membrane. The only difference between this comparative example and Example 2 is that:

[0112] The exposed weather-resistant layer does not have an interface bonding layer 4.

[0113] Comparative Example 3

[0114] This comparative example provides an exposed self-adhesive modified bitumen waterproof membrane. The only difference between this comparative example and Example 3 is that:

[0115] The asphalt layer 7 comprises the following components by weight: 60 parts of 90# asphalt, 8 parts of modifier (8 parts of SBS rubber and 9 parts of SBR rubber), 3 parts of petroleum resin and 15 parts of heavy calcium carbonate.

[0116] Test case

[0117] This test example performs performance tests on the waterproof membranes of Examples 1-3 and Comparative Examples 1-3, as detailed below:

[0118] Artificially accelerated climate aging appearance: Tested according to GB18244-2000 standard, the cumulative radiant energy at a wavelength of 340nm should not be less than 5040kJ / (m²). 2 (nm), xenon lamp aging time is 2750h. Observe for any delamination, powdering, peeling, or flaking.

[0119] Adhesion performance at low temperatures: After being placed at -15℃ for 2 hours, the specimen was 50mm wide and the weather-resistant layer of the waterproof membrane was torn off forcefully to observe the delamination between the asphalt layer and the weather-resistant layer.

[0120] Peel strength after xenon lamp aging treatment: Peel strength was tested according to GB23441-2009, and the samples were aged according to GB18244-2000. The xenon lamp aging time was 2750h.

[0121] As shown in Table 1, the waterproof membrane provided by this invention still maintains good appearance and adhesion after 2750 hours of xenon lamp aging. It also exhibits excellent adhesion between the weather-resistant layer and the asphalt layer at low temperatures.

[0122] Table 1. Test results for examples and comparative examples.

[0123]

[0124] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A self-adhesive modified bitumen waterproof membrane that can be exposed, characterized in that, The waterproof membrane includes, from bottom to top, a release membrane layer, an asphalt layer, a reinforcing layer, and an exposed weather-resistant layer; The exposed weather-resistant layer includes, from top to bottom, an aging-resistant functional layer, a barrier functional layer, a main body layer, and an interface bonding layer. The material of the interface bonding layer includes the following components: thermoplastic resin and wax powder, and optionally includes a first filler and / or asphalt masterbatch; The material of the asphalt layer comprises the following components by weight: 45-60 parts of second asphalt, 10-20 parts of modifier, 1-4 parts of second tackifier, 0.2-4 parts of additive, and 10-20 parts of second filler; the coating temperature of the asphalt layer is controlled at 140-160℃. The second asphalt is 70# asphalt and / or 90# asphalt; The second tackifier is one of petroleum resin, rosin resin, terpene resin, and coumarone resin; The additive is a low molecular weight propylene maleic anhydride copolymer and / or a low molecular weight ethylene maleic anhydride copolymer. The second filler is at least one of heavy calcium carbonate and stone powder; The modifier is a mixture of a first modifier, a second modifier and a third modifier; the first modifier is SEP rubber; the second modifier is an acrylic acid-containing copolymer; the third modifier is SIS rubber and / or modified SIS rubber; the ratio of the first modifier, the second modifier and the third modifier is (1-7):(1-7):(5-12).

2. The exposed self-adhesive modified bitumen waterproof membrane according to claim 1, wherein, The material of the interface bonding layer includes the following components by weight: 65-95 parts of thermoplastic resin, 0-20 parts of first filler, 0.2-2.5 parts of wax powder, and 0-10 parts of asphalt masterbatch.

3. The exposed self-adhesive modified bitumen waterproof membrane according to claim 2, wherein, The material of the interface bonding layer includes the following components by weight: 70-85 parts of thermoplastic resin, 0-20 parts of first filler, 1-2.5 parts of wax powder and 2-6 parts of asphalt masterbatch.

4. The exposed self-adhesive modified bitumen waterproof membrane according to claim 2, wherein, The thermoplastic resin is a mixture of polyolefin resin and functionalized polyolefin resin, wherein the ratio of polyolefin resin to functionalized polyolefin resin is (70-85):(5-10). The wax powder is at least one of polyethylene wax, oxidized polyethylene wax, ethylene-acrylic wax, ethylene-vinyl acetate wax and polyamide wax; The first filler is at least one of heavy calcium carbonate, titanium dioxide, and light calcium carbonate; The asphalt masterbatch is prepared by a torque rheometer from rubber, low-density polyethylene, first asphalt and first tackifier; the mass ratio of the rubber, low-density polyethylene, first asphalt and first tackifier is (7-20):(15-20):(5-10):(0.1-0.5).

5. The exposed self-adhesive modified bitumen waterproof membrane according to claim 4, wherein, The functionalized polyolefin resin is a maleic anhydride-grafted polyolefin resin.

6. The exposed self-adhesive modified bitumen waterproof membrane according to claim 5, wherein, The maleic anhydride-grafted polyolefin resin is at least one of maleic anhydride-grafted polyethylene, maleic anhydride-grafted polypropylene, and maleic anhydride-grafted ethylene-vinyl acetate.

7. The exposed self-adhesive modified bitumen waterproof membrane according to claim 1, wherein, The aging-resistant functional layer is at least one of fluorocarbon coating, acrylic coating, polyolefin film, PVC film, PET film, PVDF film and ASA film; The barrier layer is a metal layer; the thickness of the barrier layer is 6-30 μm; The main body layer is a resin film.

8. The exposed self-adhesive modified bitumen waterproof membrane according to claim 7, wherein, The barrier layer is at least one of aluminum foil, copper foil, and stainless steel foil.

9. The exposed self-adhesive modified bitumen waterproof membrane according to claim 7, wherein, The main body layer is at least one of PET film, modified PET film, PP film, PA / PE co-extruded film, PA / PP co-extruded film and EVOH co-extruded film.

10. The exposed self-adhesive modified bitumen waterproof membrane according to any one of claims 1-9, characterized in that, Methods for preparing an exposed weather-resistant layer include: The aging-resistant functional layer, the barrier functional layer, and the upper surface of the main body layer are sequentially laminated from top to bottom; the lower surface of the main body layer is subjected to corona treatment, and the interface bonding layer material is melt-extruded and cast onto the lower surface of the main body layer, and then rolled and cooled by an anilox roller to obtain the exposed weather-resistant layer.

11. The exposed self-adhesive modified bitumen waterproof membrane according to claim 10, wherein, The aging-resistant functional layer is prepared by at least one of blown film process, bistretching process and casting process; the aging-resistant functional layer, the barrier functional layer and the upper surface of the main layer are sequentially laminated from top to bottom by an adhesive process; the adhesive used in the adhesive process is a weather-resistant adhesive. Alternatively, the aging-resistant functional layer is prepared by coating the upper surface of the barrier functional layer using a coating process; the lower surface of the barrier functional layer and the upper surface of the main body layer are bonded together using an adhesive process; the adhesive used in the adhesive process is a weather-resistant adhesive.

12. The exposed self-adhesive modified bitumen waterproof membrane according to claim 1, wherein, The isolation film layer is an anti-sticking isolation film; the coating temperature of the isolation film layer is controlled at 40-60℃; The reinforcing layer is at least one of polyester mesh, fiberglass mesh, warp-knitted fabric, and basalt fabric, and the basis weight of the reinforcing layer is 40-200 g / m². 2 .

13. The exposed self-adhesive modified bitumen waterproof membrane according to claim 12, wherein, The isolation film layer is at least one of PE film, PP film, PET film, PA / PP co-extruded film and PA / PE co-extruded film.

14. The application of the exposed self-adhesive modified bitumen waterproof membrane according to any one of claims 1-13 in new roof waterproofing projects.

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