Reflective heat-insulating self-protecting high polymer self-adhesive waterproof roll material with aerogel thermal insulation layer

Abstract

The present application relates to waterproofing membrane technical field, propose a kind of reflective heat insulation self-protection high polymer self-adhesive waterproofing membrane with aerogel thermal insulation layer, from top to bottom include reflective heat insulation layer, aerogel thermal insulation layer, high polymer non-woven fabric layer, upper adhesive layer, high-strength matrix layer, lower adhesive layer, anti-adhesive layer;Reflective heat insulation layer, aerogel thermal insulation layer, high polymer non-woven fabric layer are inwards retracted in waterproofing membrane same side, form shrinkage area;Isolation film is set in the shrinkage area corresponding to the upper adhesive layer upper surface, forms lap edge;High polymer non-woven fabric layer is single-sided PE film-coated polyester non-woven fabric, and PE film-coated surface is fixed on the upper surface of upper adhesive layer.By the above technical scheme, the problem of poor heat insulation performance of waterproofing membrane in related art is solved.The waterproofing membrane of the present application has stable overall structure, simple construction, long service life, and is widely used in various energy-saving waterproofing and heat insulation scenarios such as building roof.

Description

Technical Field

[0001] This invention relates to the field of waterproof membrane technology, specifically to a reflective, heat-insulating, self-protective polymer self-adhesive waterproof membrane with an aerogel insulation layer. Background Technology

[0002] Waterproofing and thermal insulation are core processes for ensuring the durability of building structures and reducing building energy consumption. Currently, self-protective polymer self-adhesive waterproofing materials have become the mainstream waterproofing and self-protective substrate for underground engineering due to their excellent self-healing and impermeability, substrate adhesion, puncture and abrasion resistance, and flexible adaptability. However, this material itself does not possess thermal insulation capabilities and cannot meet building energy conservation requirements when used alone, especially unsuitable for exposed roofs.

[0003] Aerogel materials possess excellent thermal insulation properties, such as ultra-low thermal conductivity, lightweight, and corrosion resistance, making them one of the best-performing static thermal insulation materials currently available. However, aerogel felts or non-woven fabrics are loosely textured and have weak fiber adhesion, making them difficult to directly adhere to the surface of self-protective polymer self-adhesive rolls. If forcibly bonded, problems such as wrinkles, blistering, and detachment can easily occur. At the same time, when the self-adhesive roll is heated, the micro-permeation of adhesive on the surface can clog the micropores of the aerogel, leading to a complete loss of its thermal insulation performance.

[0004] Existing conventional composite processes mostly employ simple overlapping combinations, and the industry generally suffers from problems such as poor interfacial compatibility between aerogel and self-adhesive waterproof membranes, weak adhesion, severe degradation of thermal insulation performance, and insufficient weather resistance. In addition, the exposed use of aerogel may also lead to potential problems such as delamination, peeling, and loss of performance after water absorption.

[0005] To address the aforementioned issues, this invention proposes a reflective, heat-insulating, self-protective polymer self-adhesive waterproof membrane with an aerogel insulation layer, which can effectively solve problems related to interface compatibility, adhesion stability, and heat insulation durability in existing processes. Summary of the Invention

[0006] This invention proposes a reflective, heat-insulating, self-protective polymer self-adhesive waterproof membrane with an aerogel insulation layer, which solves or alleviates at least one of the above-mentioned problems.

[0007] The technical solution of the present invention is as follows: This invention proposes a reflective heat insulation self-protective polymer self-adhesive waterproof membrane with an aerogel insulation layer, which includes, from top to bottom, a reflective heat insulation layer, an aerogel insulation layer, a polymer non-woven fabric layer, an upper adhesive layer, a high-strength base layer, a lower adhesive layer, and an anti-stick layer. The reflective heat insulation layer, aerogel insulation layer, and polymer non-woven fabric layer shrink inward on the same side of the waterproof membrane to form a shrinkage area; an isolation film is set on the shrinkage area corresponding to the upper surface of the adhesive layer to form an overlap edge. The polymer nonwoven fabric layer is a single-sided PE-coated polyester nonwoven fabric, with the PE-coated surface bonded and fixed to the upper surface of the adhesive layer.

[0008] In the above technical solution, the raw material of the reflective heat insulation layer includes the following components in parts by weight: 10-15 parts nano titanium dioxide, 5-10 parts barium sulfate, 8-15 parts hollow glass microspheres, 5-10 parts composite infrared radiation powder, 40-55 parts water-based acrylic resin, 10-20 parts deionized water, and 3-6.5 parts additives. The raw materials for the composite infrared radiation powder include the following components in parts by weight: 50 parts of oxide, 1-3 parts of water-soluble lanthanum salt, and 1-3 parts of water-soluble manganese salt.

[0009] In the above technical solution, the water-soluble lanthanum salt includes one or both of lanthanum acetate and lanthanum nitrate; The water-soluble manganese salt includes one or both of manganese acetate and manganese sulfate.

[0010] In the above technical solution, the preparation method of the composite infrared radiation powder includes the following steps: A1. Add the oxide to an alkaline solution, mix, and dry to obtain pretreated oxide I; A2. Disperse the water-soluble lanthanum salt in water, add the pretreated oxide I, adjust the pH to alkaline, mix, dry, sinter, and pulverize to obtain pretreated oxide II; A3. Disperse the water-soluble manganese salt in water, add the pretreated oxide II, adjust the pH to alkaline, mix, dry, sinter, and pulverize to obtain composite infrared radiation powder.

[0011] In the above technical solution, the weight ratio of the nano-titanium dioxide, the barium sulfate, and the composite infrared radiation powder is 15:9~10:5~6.

[0012] In the above technical solution, the basis weight of the single-sided PE-coated polyester nonwoven fabric is 60~120 g / m². 2 The coating thickness of the single-sided PE coated polyester nonwoven fabric is 0.1~0.2mm.

[0013] In the above technical solution, the dry film thickness of the reflective heat insulation layer is 0.2~0.5mm; The thickness of the aerogel insulation layer is 0.5~2.0mm; The thickness of the upper adhesive layer and the lower adhesive layer are each independently 0.4~0.8 mm; The thickness of the high-strength carcass layer is 0.05~0.2mm.

[0014] In the above technical solution, the aerogel insulation layer is a silica aerogel insulation layer; Both the upper adhesive layer and the lower adhesive layer are asphalt adhesive layers; The high-strength carcass layer is made of one of the following: polyethylene carcass base, polyethylene terephthalate carcass base, or polyethylene / polyethylene terephthalate composite carcass base. The anti-stick layer is one of the following: silicone-coated release film, polyethylene terephthalate release film, and polyethylene terephthalate aluminized film.

[0015] According to another aspect of the present invention, the present invention also provides a method for preparing a reflective, heat-insulating, self-protective polymer self-adhesive waterproof membrane with an aerogel insulation layer, comprising the following steps: S1. The aerogel slurry is impregnated and bonded to the upper surface of the polymer nonwoven fabric layer, and then hot-pressed to obtain a composite substrate. S2. Spray the reflective heat insulation coating onto the upper surface of the composite substrate and cure it to obtain a base fabric consisting of a reflective heat insulation layer, an aerogel insulation layer, and a polymer non-woven fabric layer from top to bottom. S3. Apply adhesive to the upper and lower surfaces of the high-strength substrate layer, and shape it to obtain an upper adhesive layer and a lower adhesive layer. After covering the lower surface of the lower adhesive layer with the anti-adhesive layer, attach and fix the PE film surface of the base fabric to the upper surface of the upper adhesive layer. The base fabric shrinks inward on the same side of the waterproof membrane to form a shrinkage area. Set an isolation film in the corresponding shrinkage area on the upper surface of the upper adhesive layer to form an overlap edge. Cool and shape to obtain the reflective heat insulation self-protective polymer self-adhesive waterproof membrane with aerogel insulation layer.

[0016] In the above technical solution, in step S2, the spraying is carried out by one spraying or two spraying methods; During the two spraying processes, the dry film thickness of a single spray is 0.1~0.3mm, and the final overall dry film thickness is controlled at 0.2~0.5mm.

[0017] Compared with existing technologies, this invention provides an integrated waterproof membrane, comprising, from top to bottom, a reflective heat insulation layer, an aerogel insulation layer, a polymer nonwoven fabric layer, an upper adhesive layer, a high-strength substrate layer, a lower adhesive layer, and an anti-adhesive layer. The upper and lower adhesive layers, as the bottom self-adhesive layers, provide excellent waterproof performance; the polymer nonwoven fabric layer serves as both an adhesive-blocking protective layer and a structural support for the membrane; the aerogel insulation layer on top offers excellent heat insulation; and the topmost reflective heat insulation layer provides radiative cooling while also offering good weather resistance. This invention, through the integrated and synergistic matching of the four layers—the adhesive base, the polymer nonwoven fabric for load-bearing protection, the aerogel insulation layer for heat insulation, and the reflective heat insulation layer—enables the waterproof membrane to possess multiple properties, including heat insulation and cooling, waterproofing and seepage prevention, crack resistance enhancement, and weather resistance and aging resistance, making it widely applicable to various building roof environments. This roll material is integrally formed and easy to install, which can significantly reduce construction costs. It is also versatile in multiple scenarios, has high engineering promotion value and significant energy-saving benefits. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a schematic diagram of the waterproof membrane structure of Embodiment 5 of the present invention; In the diagram: 1-reflective heat insulation layer, 2-aerogel insulation layer, 3-polymer nonwoven fabric layer, 4-upper adhesive layer, 5-high-strength tire body layer, 6-lower adhesive layer, 7-anti-sticking layer, 8-separation film. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention more apparent, the invention is described in detail below. It should be understood that the invention is not limited to the description herein.

[0021] Upper adhesive layer, high-strength carcass layer, lower adhesive layer This invention relates to a reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane. The upper adhesive layer, high-strength reinforcing layer, and lower adhesive layer form the base structure, possessing excellent tensile strength, good seepage prevention, and flexible crack resistance, thus achieving long-lasting waterproof anchoring. The upper adhesive layer firmly bonds the upper polymer non-woven fabric layer and the lower high-strength reinforcing layer together, and then adheres and fixes upwards to the PE film of the polymer non-woven fabric layer. At the overlap areas of the membrane, a release liner is placed on top of the upper adhesive layer. During construction, after removing the release liner, the upper adhesive layer directly participates in the sealing and bonding of the overlap. The high-strength reinforcing layer serves as the core reinforcing skeleton of the base, providing the membrane with high strength, puncture resistance, and tear resistance. The lower adhesive layer bonds upwards to the high-strength reinforcing layer, and the lower layer is an anti-adhesive layer. During construction, after removing the anti-adhesive layer, the lower adhesive layer can be directly adhered to the building substrate, forming a reliable waterproof layer, giving the membrane excellent impermeability.

[0022] In this invention, the thickness of the upper adhesive layer is 0.4~0.8mm, for example, it can be any point value or range between two points from 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, and 0.8mm; the thickness of the lower adhesive layer is 0.4~0.8mm, for example, it can be any point value or range between two points from 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, and 0.8mm; the thickness of the high-strength carcass layer is 0.05~0.2mm, for example, it can be any point value or range between two points from 0.05mm, 0.1mm, 0.15mm, and 0.2mm.

[0023] In this invention, both the upper and lower adhesive layers are made of asphalt adhesive layers, which are modified by styrene-butadiene-styrene block copolymer and styrene-butadiene rubber. The raw materials of the asphalt adhesive layers include the following components by weight: 60 parts asphalt, 10-15 parts styrene-butadiene-styrene block copolymer, 5-8 parts styrene-butadiene rubber, 1-2 parts antioxidant, and 3-5 parts plasticizer.

[0024] In this invention, the high-strength carcass layer is made of one of polyethylene carcass base, polyethylene terephthalate carcass base, or polyethylene / polyethylene terephthalate composite carcass base, preferably polyethylene terephthalate carcass base.

[0025] Polymer nonwoven fabric layer In this invention, a reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane is constructed. The polymeric nonwoven fabric layer is a single-sided PE-coated polyester nonwoven fabric. The PE-coated surface is bonded and fixed to the upper adhesive layer, with the fabric side facing upwards to support the aerogel insulation layer. The polymeric nonwoven fabric layer serves as the supporting substrate, preventing the self-adhesive layer's adhesive from penetrating and providing a stable adhesion carrier for the aerogel insulation layer. This solves the problem of aerogel being difficult to directly adhere to self-adhesive membranes, resulting in easy delamination and poor adhesion. In this invention, the presence of the PE coating in the single-sided PE-coated polyester nonwoven fabric achieves a breathable yet adhesive-free effect, preventing the asphalt adhesive in the upper adhesive layer from penetrating into the micropores of the aerogel insulation layer. Simultaneously, the use of a single-sided PE-coated polyester nonwoven fabric ensures stable interfacial peel strength between the polymeric nonwoven fabric layer and the aerogel insulation layer, as well as between the polymeric nonwoven fabric layer and the upper adhesive layer, resulting in strong interlayer bonding and excellent waterproof performance of the waterproof membrane.

[0026] In this invention, the basis weight of the single-sided PE-coated polyester nonwoven fabric is 60~120 g / m². 2 For example, it could be 60g / m 2 70g / m 2 80g / m2 90g / m 2 100g / m 2 110g / m 2 120g / m 2 The values ​​at any point in the data and the range between two points are given. The PE coating thickness in single-sided PE coated polyester nonwoven fabric is 0.1~0.2mm, for example, it can be 0.1mm, 0.15mm, or 0.2mm.

[0027] Anti-stick layer In the reflective, heat-insulating, self-protective polymer self-adhesive waterproof membrane of the present invention, the anti-adhesive layer is one of the following: silicone-coated release film, polyethylene terephthalate release film, and polyethylene terephthalate aluminized film, preferably polyethylene terephthalate release film.

[0028] Aerogel insulation layer In this invention, the reflective, heat-insulating, self-protective polymer self-adhesive waterproof membrane includes an aerogel insulation layer made of silica aerogel. The aerogel insulation layer is uniformly adhered and fixed to the surface of the polymer non-woven fabric, achieving static heat insulation through its low thermal conductivity structure. In this invention, the thickness of the aerogel insulation layer is 0.5~2.0 mm, for example, it can be any point value or range between two points from 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, and 2.0 mm, preferably 1.2~1.5 mm.

[0029] Reflective heat insulation layer In this invention, the reflective, heat-insulating, self-protective polymer self-adhesive waterproof membrane has a surface layer that is a reflective heat-insulating layer. This layer completely seals over the aerogel insulation layer, reliably and efficiently reflecting short-wave solar radiation and dissipating long-wave infrared heat, while simultaneously protecting the aerogel insulation layer from ultraviolet radiation, wind and rain erosion, and mechanical damage. In this invention, the dry film thickness of the reflective heat-insulating layer is 0.2~0.5mm, for example, it can be any point value or range between two points from 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, and 0.5mm.

[0030] In this invention, the raw materials of the reflective heat insulation layer include the following components in parts by weight: 10-15 parts of nano titanium dioxide, 5-10 parts of barium sulfate, 8-15 parts of hollow glass microspheres, 5-10 parts of composite infrared radiation powder, 40-55 parts of water-based acrylic resin, 10-20 parts of deionized water, and 3-6.5 parts of additives.

[0031] The raw materials for the composite infrared radiation powder include the following components in parts by weight: 50 parts of oxide, 1-3 parts of water-soluble lanthanum salt, and 1-3 parts of water-soluble manganese salt.

[0032] In this invention, the additives include 1-2 parts of dispersant, 0.5-1 part of defoamer, 1-2 parts of leveling agent, and 0.5-1.5 parts of bactericide.

[0033] In this invention, the water-soluble lanthanum salt includes one or both of lanthanum acetate and lanthanum nitrate, preferably lanthanum acetate; the water-soluble manganese salt includes one or both of manganese acetate and manganese sulfate, preferably manganese acetate.

[0034] In this invention, the dispersant can be any dispersant in the art, such as sodium polyacrylate or sodium alkylnaphthalene sulfonate, preferably sodium polyacrylate; the defoamer can be any defoamer in the art, such as an organosilicon defoamer; the leveling agent can be any leveling agent in the art, such as an acrylic leveling agent; and the bactericide can be any bactericide in the art, such as 1,2-benzisothiazolin-3-one.

[0035] In this invention, the reflective heat insulation layer of the reflective heat insulation self-protective polymer self-adhesive waterproof membrane uses nano-titanium dioxide, barium sulfate, hollow glass microspheres, and composite infrared radiation powder as the main reflective heat insulation components. Simultaneously, under the bonding effect of water-based acrylic resin, the reflective heat insulation layer possesses excellent infrared radiation scattering capability. The raw materials of the composite infrared radiation powder include oxides, water-soluble lanthanum salts, and water-soluble manganese salts. The oxides include silicon dioxide and zinc oxide in a weight ratio of 1.5~4:1. Doping silicon dioxide and zinc oxide with water-soluble lanthanum salts and water-soluble manganese salts can, to a certain extent, induce lattice distortion in the oxides, reducing their structural symmetry and enabling more effective scattering and reflection of infrared radiation, ultimately giving the waterproof membrane excellent reflective performance.

[0036] In this invention, the content ratio of nano-titanium dioxide, barium sulfate, and composite infrared radiation powder is controlled. When the weight ratio of nano-titanium dioxide, barium sulfate, and composite infrared radiation powder is 15:9~10:5~6, the reflectivity of the waterproof membrane can be further improved.

[0037] Preparation method of composite infrared radiation powder A1. Add the oxide to an alkaline solution, mix, and dry to obtain pretreated oxide I; A2. Disperse water-soluble lanthanum salt in water, add pretreated oxide I, adjust the pH to alkaline, mix, dry, sinter, and pulverize to obtain pretreated oxide II; A3. Disperse water-soluble manganese salt in water, add pretreated oxide II, adjust the pH to alkaline, mix, dry, sinter, and pulverize to obtain composite infrared radiation powder.

[0038] In this invention, in step A1, the alkaline solution can be any alkaline solution in the art, such as sodium hydroxide solution or ammonia solution, preferably sodium hydroxide solution. When the alkaline solution is sodium hydroxide solution, the mass fraction of sodium hydroxide is 10%~15%; in step A1, during mixing, the stirring speed is 200~400 rpm, and the stirring time is 10~20 min.

[0039] In step A2, during blending, the stirring speed is 200~400 rpm and the stirring time is 30~60 min; during sintering, in an air atmosphere, the sintering temperature is 600~700℃ and the sintering time is 60~90 min; the average particle size of the pretreated oxide II is 100~150 μm after pulverization.

[0040] In step A3, during blending, the stirring speed is 200~400 rpm and the stirring time is 30~60 min; during sintering, the sintering temperature is 600~700℃ and the sintering time is 60~90 min in an air atmosphere; the average particle size of the composite infrared radiation powder is 40~80 μm.

[0041] Preparation method of reflective heat-insulating self-protective polymer self-adhesive waterproof membrane with aerogel insulation layer This invention also proposes a method for preparing a reflective, heat-insulating, self-protective polymer self-adhesive waterproof membrane with an aerogel insulation layer, comprising the following steps: S1. The aerogel slurry is impregnated and bonded to the upper surface of the polymer nonwoven fabric layer, and then hot-pressed at 50~60℃, 0.4~0.5MPa, and 2~4m / min to obtain the composite substrate. S2. After mixing the raw materials of the reflective heat insulation layer, stir at 800~1200 rpm for 20~30 min to obtain the reflective heat insulation coating. Apply the reflective heat insulation coating to the surface of the composite substrate using a high-pressure airless spraying process and cure at 75~85℃ for 20~30 min to obtain the base fabric consisting of a reflective heat insulation layer, an aerogel insulation layer, and a polymer non-woven fabric layer from top to bottom. S3. Apply an upper adhesive layer to the upper surface of the high-strength base layer and shape it to obtain the upper adhesive layer. Apply a lower adhesive layer to the lower surface of the high-strength base layer and shape it to obtain the lower adhesive layer. After applying a polyethylene terephthalate release film to the lower surface of the lower adhesive layer, attach and fix the PE film surface of the base fabric to the upper surface of the upper adhesive layer. Shrink the base fabric inward by 6-10cm on the same side of the waterproof membrane, and then laminate it to form a shrinkage area. Place a release film on the corresponding shrinkage area on the upper surface of the upper adhesive layer to form an overlap edge. Cool and shape to obtain a reflective heat-insulating self-protective polymer self-adhesive waterproof membrane with an aerogel insulation layer.

[0042] In this invention, when the reflective heat-insulating coating is sprayed onto the surface of the composite substrate using a high-pressure airless spraying process, it can be applied in one or two spraying methods. When two spraying methods are used, the dry film thickness of a single spray is 0.1~0.3mm, and the final overall dry film thickness is controlled at 0.2~0.5mm.

[0043] During construction, the bottom anti-adhesive layer of the reflective, heat-insulating, self-protective polymer self-adhesive waterproof membrane with an aerogel insulation layer is removed and laid on the base surface. Simultaneously, the release liner in the shrinkage area of ​​the waterproof membrane is removed. After removing the anti-adhesive layers of adjacent waterproof membranes, they are overlapped and placed over the shrinkage area where the release liner has been removed, forming a continuous overlapping unit, which is then laid on the base surface. Once all the waterproof membranes are laid and overlapped, a good waterproofing effect can be achieved.

[0044] To further illustrate the present invention, detailed descriptions will be provided below through the following embodiments. The raw materials used in the following embodiments and comparative examples of the present invention are all commercially available products. Specifically, the water-based acrylic resin is NeoCryl B842; the organosilicon defoamer is polydimethylsiloxane with an effective ingredient content of 99%; the leveling agent is an acrylic leveling agent, model FC835; the bactericide is 1,2-benzisothiazolin-3-one; the antioxidant is antioxidant 1010; the plasticizer is dioctyl phthalate; and the single-sided PE-coated polyester nonwoven fabric has a basis weight of 100 g / m². 2 The PE coating thickness is 0.15mm; the high-strength body layer is made of polyethylene terephthalate base material with a thickness of 0.15mm; the upper adhesive layer has a thickness of 0.6mm; the lower adhesive layer has a thickness of 0.6mm; and the aerogel insulation layer is formed by silica aerogel slurry.

[0045] The structural diagrams of the waterproof membranes prepared in Examples 1-15 below are shown below. Figure 1 As shown, from top to bottom, it includes a reflective heat insulation layer 1, an aerogel insulation layer 2, a polymer non-woven fabric layer 3, an upper adhesive layer 4, a high-strength reinforcing layer 5, a lower adhesive layer 6, and an anti-sticking layer 7. The reflective heat insulation layer 1, the aerogel insulation layer 2, and the polymer non-woven fabric layer 3 shrink inward on the same side of the waterproof membrane to form a shrinkage area. An isolation film 8 is set on the corresponding shrinkage area on the upper surface of the upper adhesive layer to form an overlap edge.

[0046] Example 1 A method for preparing a reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane with an aerogel insulation layer includes the following steps: S1. The silica aerogel slurry is impregnated and bonded to the upper surface of a single-sided PE-coated polyester nonwoven fabric (fabric side facing up to support the aerogel insulation layer), and hot-pressed at 55℃, 0.45MPa, and 3m / min to obtain a composite substrate; wherein, the thickness of the aerogel insulation layer formed by the silica aerogel slurry in the composite substrate is 1.2mm. S2. Mix 10 parts nano titanium dioxide, 5 parts barium sulfate, 8 parts hollow glass microspheres, 5 parts infrared radiation powder (silicon dioxide and zinc oxide in a weight ratio of 4:1), 40 parts water-based acrylic resin, 10 parts deionized water, 1 part sodium polyacrylate, 0.5 parts silicone defoamer, 1 part leveling agent, and 0.5 parts bactericide. Stir at 800 rpm for 30 minutes to obtain a reflective heat insulation coating. Apply the reflective heat insulation coating to the surface of the composite substrate in two coats using a high-pressure airless spraying process (the dry film thickness after each coat is 0.1 mm, and the total thickness of the reflective heat insulation layer is 0.2 mm). Cure at 75°C for 30 minutes to obtain a base fabric consisting of a reflective heat insulation layer, an aerogel insulation layer, and a polymer nonwoven fabric layer from top to bottom. S3. After softening 60 parts of asphalt, add 13 parts of styrene-butadiene-styrene block copolymer, 6 parts of styrene-butadiene rubber, 1.5 parts of antioxidant, and 4 parts of plasticizer, and blend to obtain the upper adhesive layer compound; after softening 60 parts of asphalt, add 13 parts of styrene-butadiene-styrene block copolymer, 6 parts of styrene-butadiene rubber, 1.5 parts of antioxidant, and 4 parts of plasticizer, and blend to obtain the lower adhesive layer compound; coat the upper adhesive layer compound onto the upper surface of the high-strength carcass layer and shape it to obtain the upper adhesive layer. The lower surface of the high-strength reinforcing layer is coated with a lower adhesive layer and shaped to obtain the lower adhesive layer. After applying an anti-adhesive layer to the lower surface of the lower adhesive layer, the PE film surface of the base fabric is bonded and fixed to the upper surface of the upper adhesive layer. The base fabric shrinks inward by 10cm on the same side of the waterproof membrane, and the composite is formed to create a shrinkage area. A polyethylene terephthalate release film is set on the corresponding shrinkage area on the upper surface of the upper adhesive layer to form an overlap edge. After cooling and shaping, a reflective heat-insulating self-protective polymer self-adhesive waterproof membrane with an aerogel insulation layer is obtained.

[0047] Example 2 A method for preparing a reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane with an aerogel insulation layer includes the following steps: S1. The silica aerogel slurry is impregnated and bonded to the upper surface of a single-sided PE-coated polyester nonwoven fabric (fabric side facing up to support the aerogel insulation layer), and hot-pressed at 55℃, 0.45MPa, and 3m / min to obtain a composite substrate; wherein, the thickness of the aerogel insulation layer formed by the silica aerogel slurry in the composite substrate is 1.2mm. S2. Mix 15 parts nano titanium dioxide, 10 parts barium sulfate, 15 parts hollow glass microspheres, 10 parts infrared radiation powder (silicon dioxide and zinc oxide in a weight ratio of 4:1), 55 parts water-based acrylic resin, 20 parts deionized water, 2 parts sodium polyacrylate, 1 part silicone defoamer, 2 parts leveling agent, and 1.5 parts bactericide. Stir at 1200 rpm for 20 minutes to obtain a reflective heat insulation coating. Apply the reflective heat insulation coating to the surface of the composite substrate in two coats using a high-pressure airless spraying process (the dry film thickness after each coat is 0.18 mm, and the total thickness of the reflective heat insulation layer is 0.36 mm). Cure at 85°C for 20 minutes to obtain a base fabric consisting of a reflective heat insulation layer, an aerogel insulation layer, and a polymer nonwoven fabric layer from top to bottom. S3. After softening 60 parts of asphalt, add 13 parts of styrene-butadiene-styrene block copolymer, 6 parts of styrene-butadiene rubber, 1.5 parts of antioxidant, and 4 parts of plasticizer, and blend to obtain the upper adhesive layer compound; after softening 60 parts of asphalt, add 13 parts of styrene-butadiene-styrene block copolymer, 6 parts of styrene-butadiene rubber, 1.5 parts of antioxidant, and 4 parts of plasticizer, and blend to obtain the lower adhesive layer compound; coat the upper adhesive layer compound onto the upper surface of the high-strength carcass layer and shape it to obtain the upper adhesive layer. The lower surface of the high-strength reinforcing layer is coated with a lower adhesive layer and shaped to obtain the lower adhesive layer. After applying an anti-adhesive layer to the lower surface of the lower adhesive layer, the PE film surface of the base fabric is bonded and fixed to the upper surface of the upper adhesive layer. The base fabric shrinks inward by 10cm on the same side of the waterproof membrane, and the composite is formed to create a shrinkage area. A polyethylene terephthalate release film is set on the corresponding shrinkage area on the upper surface of the upper adhesive layer to form an overlap edge. After cooling and shaping, a reflective heat-insulating self-protective polymer self-adhesive waterproof membrane with an aerogel insulation layer is obtained.

[0048] Example 3 A method for preparing a reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane with an aerogel insulation layer includes the following steps: S1. The silica aerogel slurry is impregnated and bonded to the upper surface of a single-sided PE-coated polyester nonwoven fabric (fabric side facing up to support the aerogel insulation layer), and hot-pressed at 55℃, 0.45MPa, and 3m / min to obtain a composite substrate; wherein, the thickness of the aerogel insulation layer formed by the silica aerogel slurry in the composite substrate is 1.2mm. S2. Mix 12 parts nano titanium dioxide, 10 parts barium sulfate, 7 parts hollow glass microspheres, 8 parts infrared radiation powder (silicon dioxide and zinc oxide in a weight ratio of 4:1), 48 parts water-based acrylic resin, 15 parts deionized water, 1.5 parts sodium polyacrylate, 0.8 parts organosilicon defoamer, 1.2 parts leveling agent, and 1 part bactericide. Stir at 1000 rpm for 25 minutes to obtain a reflective heat insulation coating. Apply the reflective heat insulation coating to the surface of the composite substrate in two coats using a high-pressure airless spraying process (the dry film thickness after each coat is 0.15 mm, and the total thickness of the reflective heat insulation layer is 0.3 mm). Cure at 78°C for 25 minutes to obtain a base fabric consisting of a reflective heat insulation layer, an aerogel insulation layer, and a polymer nonwoven fabric layer from top to bottom. S3. After softening 60 parts of asphalt, add 13 parts of styrene-butadiene-styrene block copolymer, 6 parts of styrene-butadiene rubber, 1.5 parts of antioxidant, and 4 parts of plasticizer, and blend to obtain the upper adhesive layer compound; after softening 60 parts of asphalt, add 13 parts of styrene-butadiene-styrene block copolymer, 6 parts of styrene-butadiene rubber, 1.5 parts of antioxidant, and 4 parts of plasticizer, and blend to obtain the lower adhesive layer compound; coat the upper adhesive layer compound onto the upper surface of the high-strength carcass layer and shape it to obtain the upper adhesive layer. The lower surface of the high-strength reinforcing layer is coated with a lower adhesive layer and shaped to obtain the lower adhesive layer. After applying an anti-adhesive layer to the lower surface of the lower adhesive layer, the PE film surface of the base fabric is bonded and fixed to the upper surface of the upper adhesive layer. The base fabric shrinks inward by 6cm on the same side of the waterproof membrane, and the composite is formed to create a shrinkage area. A polyethylene terephthalate release film is placed on the corresponding shrinkage area on the upper surface of the upper adhesive layer to form an overlap edge. After cooling and shaping, a reflective heat-insulating self-protective polymer self-adhesive waterproof membrane with an aerogel insulation layer is obtained.

[0049] Example 4 The only difference between this embodiment and Embodiment 3 is that in this embodiment, 13 parts of nano-titanium dioxide and 7 parts of barium sulfate are added.

[0050] Example 5 The only difference between this embodiment and Embodiment 3 is that in this embodiment, 15 parts of nano-titanium dioxide, 6 parts of barium sulfate, and 10 parts of infrared radiation powder (with a weight ratio of silicon dioxide to zinc oxide of 4:1) are added.

[0051] A schematic diagram of the waterproof membrane structure prepared in Example 5 is shown below. Figure 1 As shown.

[0052] Example 6 The only difference between this embodiment and Embodiment 5 is that, in this embodiment, the infrared radiation powder is a composite infrared radiation powder, and its preparation method includes the following steps: A1. Add 40 parts of silicon dioxide and 10 parts of zinc oxide to 100 parts of sodium hydroxide solution with a mass fraction of 10%, stir at 300 rpm for 15 min, and dry to obtain pretreated oxide; A2. Disperse 2 parts of lanthanum acetate in 70 parts of water, add the above pretreated oxide, adjust the pH to 8 with a 10% sodium hydroxide solution, stir at 300 rpm for 45 min, dry, sinter at 650℃ in air for 80 min, pulverize to obtain composite infrared radiation powder with an average particle size of 50 μm.

[0053] Example 7 The only difference between this embodiment and Embodiment 6 is that, in this embodiment, lanthanum acetate is replaced with an equal amount of manganese acetate.

[0054] Example 8 The only difference between this embodiment and Embodiment 6 is that the preparation method of the composite infrared radiation powder is different in this embodiment, specifically: A1. Add 40 parts of silicon dioxide and 10 parts of zinc oxide to 100 parts of sodium hydroxide solution with a mass fraction of 10%, stir at 300 rpm for 15 min, and dry to obtain pretreated oxide I; A2. Disperse 1 part of lanthanum acetate in 70 parts of water, add the above pretreated oxide I, adjust the pH to 8 with 10% sodium hydroxide solution, stir at 300 rpm for 45 min, dry, sinter at 650℃ in air for 80 min, pulverize to obtain pretreated oxide II with an average particle size of 100 μm. A3. Disperse 1 part manganese acetate in 70 parts water, add pretreated oxide II, adjust the pH to 8 with 10% sodium hydroxide solution, stir at 300 rpm for 45 min, dry, sinter at 650℃ in air for 80 min, pulverize to obtain composite infrared radiation powder with a uniform particle size of 50 μm.

[0055] Example 9 The only difference between this embodiment and Embodiment 8 is that, in the preparation method of the composite infrared radiation powder in this embodiment, 3 parts of lanthanum acetate and 3 parts of manganese acetate are added.

[0056] Example 10 The only difference between this embodiment and Embodiment 9 is that in this embodiment, 15 parts of nano-titanium dioxide, 9 parts of barium sulfate, and 6 parts of composite infrared radiation powder are added.

[0057] Example 11 The only difference between this embodiment and Embodiment 9 is that in this embodiment, 15 parts of nano-titanium dioxide, 10 parts of barium sulfate, and 5 parts of composite infrared radiation powder are added.

[0058] Example 12 The only difference between this embodiment and Embodiment 5 is that in this embodiment, the thickness of the aerogel insulation layer is 1.5 mm.

[0059] Example 13 The only difference between this embodiment and Embodiment 5 is that in this embodiment, the thickness of the aerogel insulation layer is 2.0 mm.

[0060] Example 14 The only difference between this embodiment and embodiment 5 is that in this embodiment, the total thickness of the reflective heat insulation layer is 0.4 mm.

[0061] Example 15 The only difference between this embodiment and Embodiment 5 is that, in this embodiment, the total thickness of the reflective heat insulation layer is 0.5 mm.

[0062] Comparative Example 1 The only difference between this comparative example and Example 1 is that, in this comparative example, the single-sided PE-coated polyester nonwoven fabric is replaced with conventional polyester nonwoven fabric, which does not contain PE coating.

[0063] Comparative Example 2 The only difference between this comparative example and Example 1 is that in this comparative example, the top layer of the waterproof membrane is an aerogel insulation layer and does not contain a reflective heat insulation layer.

[0064] Comparative Example 3 The only difference between this comparative example and Example 1 is that the waterproof membrane in this comparative example does not contain an aerogel insulation layer. The reflective heat insulation coating is applied to the surface of the single-sided PE-coated polyester nonwoven fabric in two stages using a high-pressure airless spraying process, with the fabric side facing upwards to support the reflective heat insulation layer.

[0065] Experimental Example The waterproof membranes prepared in Examples 1-15 and Comparative Examples 1-3 were subjected to the following performance tests: (1) Interlayer peel strength: The peel strength of nonwoven fabric-aerogel and the peel strength of nonwoven fabric-adhesive layer were tested according to the methods in GB / T 328.20-2007 "Test methods for building waterproof membranes Part 20: Peel performance of joints of bitumen waterproof membranes". (2) Thermal conductivity: The thermal conductivity was tested according to the method in GB / T 10294-2008 "Determination of steady-state thermal resistance and related properties of thermal insulation materials - protective hot plate method"; (3) Solar reflectance: The solar reflectance was tested according to the method in JG / T 235-2014 "Building Reflective Thermal Insulation Coatings"; (4) Steady-state cooling temperature difference of roof: ambient temperature 35℃, simulated sunlight irradiation for 2 hours, test the temperature difference between the lower surface of the waterproof membrane sample and the ground of ordinary self-adhesive membrane; (5) Impermeability: The impermeability performance shall be tested according to Method B in GB / T 328.10-2007 "Test Methods for Waterproofing Membranes of Buildings - Part 10: Impermeability of Bituminous and Polymer Waterproofing Membranes"; The test results are shown in Table 1.

[0066] Table 1 Performance Test Results

[0067] Comparative Example 1 eliminated the single-sided PE coating structure, leaving only ordinary non-woven fabric to support the aerogel. This resulted in the self-adhesive layer's adhesive seeping into the aerogel layer, causing a significant decrease in thermal insulation performance. The interfacial peel strength between the two layers was only 13.2 N / 50 mm, damaging the integrity of the waterproof structure and causing localized leakage. Comparative Example 2 eliminated the surface reflective thermal insulation layer, leaving the aerogel insulation layer completely exposed without any sealing protection, resulting in a significant decrease in solar reflectivity. Comparative Example 3 eliminated the silica aerogel insulation layer, directly spraying a reflective thermal insulation coating onto the surface of the non-woven fabric, thus increasing the thermal conductivity. Compared to Comparative Examples 1-3, the waterproof rolls prepared in Examples 1-15 consist of a reflective thermal insulation layer, an aerogel insulation layer, and a polymer non-woven fabric layer from top to bottom. The polymer non-woven fabric layer is a single-sided PE-coated polyester non-woven fabric, with the PE-coated surface adhered and fixed to the upper adhesive layer. The fabric side faces upward to support the aerogel insulation layer, effectively preventing the penetration of the self-adhesive layer's adhesive. By combining a reflective heat insulation layer, an aerogel insulation layer, and a polymer nonwoven fabric layer, the waterproof membrane can provide heat insulation and cooling while also offering excellent waterproof and seepage-resistant properties.

[0068] Compared with Examples 1-7, the solar reflectance of the waterproof membranes in Examples 8-9 is improved, indicating that doping silicon dioxide and zinc oxide with water-soluble lanthanum salt and water-soluble manganese salt can improve the reflectivity of the waterproof membrane to a certain extent.

[0069] Compared with Examples 6-9, the solar reflectance of the waterproof membranes in Examples 10-11 is further improved, indicating that by controlling the content ratio of nano-titanium dioxide, barium sulfate, and composite infrared radiation powder, when the weight ratio of nano-titanium dioxide, barium sulfate, and composite infrared radiation powder is 15:9~10:5~6, the reflectivity of the waterproof membrane can be further improved.

[0070] Compared with Example 5, the thermal conductivity of the waterproof membrane in Examples 12-13 decreased and the steady-state cooling temperature difference under sun exposure increased. This indicates that as the thickness of the aerogel insulation layer increases, the overall thermal conductivity of the waterproof membrane continues to decrease, and the simulated roof cooling temperature difference under sun exposure gradually increases. This also shows that the silica aerogel insulation layer is the core structure for improving the thermal insulation performance of the waterproof membrane and reducing the roof temperature rise.

[0071] Compared with Example 5, the solar reflectance of the waterproof membranes in Examples 14-15 is further improved, indicating that as the thickness of the reflective heat insulation layer increases, the infrared radiation heat dissipation capacity is enhanced, and the surface sealing and protection effect is better.

[0072] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane with an aerogel insulation layer, characterized in that, From top to bottom, it includes a reflective heat insulation layer, an aerogel insulation layer, a polymer non-woven fabric layer, an upper adhesive layer, a high-strength tire body layer, a lower adhesive layer, and an anti-sticking layer; The reflective heat insulation layer, aerogel insulation layer, and polymer non-woven fabric layer shrink inward on the same side of the waterproof membrane to form a shrinkage area; An isolation film is provided in the shrinkage area corresponding to the upper surface of the adhesive layer to form an overlap edge; The polymer nonwoven fabric layer is a single-sided PE-coated polyester nonwoven fabric, with the PE-coated surface bonded and fixed to the upper surface of the adhesive layer.

2. The reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane with an aerogel insulation layer according to claim 1, characterized in that, The raw material of the reflective heat insulation layer includes the following components in parts by weight: 10-15 parts nano titanium dioxide, 5-10 parts barium sulfate, 8-15 parts hollow glass microspheres, 5-10 parts composite infrared radiation powder, 40-55 parts water-based acrylic resin, 10-20 parts deionized water, and 3-6.5 parts additives. The raw materials for the composite infrared radiation powder include the following components in parts by weight: 50 parts of oxide, 1-3 parts of water-soluble lanthanum salt, and 1-3 parts of water-soluble manganese salt.

3. The reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane with an aerogel insulation layer according to claim 2, characterized in that, The water-soluble lanthanum salt includes one or both of lanthanum acetate and lanthanum nitrate; The water-soluble manganese salt includes one or both of manganese acetate and manganese sulfate.

4. The reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane with an aerogel insulation layer according to claim 2, characterized in that, The preparation method of the composite infrared radiation powder includes the following steps: A1. Add the oxide to an alkaline solution, mix, and dry to obtain pretreated oxide I; A2. Disperse the water-soluble lanthanum salt in water, add the pretreated oxide I, adjust the pH to alkaline, mix, dry, sinter, and pulverize to obtain pretreated oxide II; A3. Disperse the water-soluble manganese salt in water, add the pretreated oxide II, adjust the pH to alkaline, mix, dry, sinter, and pulverize to obtain composite infrared radiation powder.

5. The reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane with an aerogel insulation layer according to claim 2, characterized in that, The weight ratio of the nano-titanium dioxide, the barium sulfate, and the composite infrared radiation powder is 15:9~10:5~6.

6. The reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane with an aerogel insulation layer according to claim 1, characterized in that, The basis weight of the single-sided PE-coated polyester nonwoven fabric is 60~120 g / m². 2 The coating thickness of the single-sided PE coated polyester nonwoven fabric is 0.1~0.2mm.

7. The reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane with an aerogel insulation layer according to claim 1, characterized in that, The dry film thickness of the reflective heat insulation layer is 0.2~0.5mm; The thickness of the aerogel insulation layer is 0.5~2.0mm; The thickness of the upper adhesive layer and the lower adhesive layer are each independently 0.4~0.8 mm; The thickness of the high-strength carcass layer is 0.05~0.2mm.

8. The reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane with an aerogel insulation layer according to claim 1, characterized in that, The aerogel insulation layer is a silica aerogel insulation layer. Both the upper adhesive layer and the lower adhesive layer are asphalt adhesive layers; The high-strength carcass layer is made of one of the following: polyethylene carcass base, polyethylene terephthalate carcass base, or polyethylene / polyethylene terephthalate composite carcass base. The anti-stick layer is one of the following: silicone-coated release film, polyethylene terephthalate release film, and polyethylene terephthalate aluminized film.

9. A method for preparing a reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane with an aerogel insulation layer, used to prepare the reflective, heat-insulating, self-protective, polymeric self-adhesive waterproof membrane with an aerogel insulation layer as described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1. The aerogel slurry is impregnated and bonded to the upper surface of the polymer nonwoven fabric layer, and then hot-pressed to obtain a composite substrate. S2. Spray the reflective heat insulation coating onto the upper surface of the composite substrate and cure it to obtain a base fabric consisting of a reflective heat insulation layer, an aerogel insulation layer, and a polymer non-woven fabric layer from top to bottom. S3. Apply adhesive to the upper and lower surfaces of the high-strength substrate layer, and shape it to obtain an upper adhesive layer and a lower adhesive layer. After covering the lower surface of the lower adhesive layer with the anti-adhesive layer, attach and fix the PE film surface of the base fabric to the upper surface of the upper adhesive layer. The base fabric shrinks inward on the same side of the waterproof membrane to form a shrinkage area. Set an isolation film in the corresponding shrinkage area on the upper surface of the upper adhesive layer to form an overlap edge. Cool and shape to obtain the reflective heat insulation self-protective polymer self-adhesive waterproof membrane with aerogel insulation layer.

10. The method for preparing a reflective, heat-insulating, self-protective polymer self-adhesive waterproof membrane with an aerogel insulation layer according to claim 9, characterized in that, In step S2, the spraying process may be carried out by one spraying or two sprayings. During the two-coating process, the dry film thickness of a single coating is 0.1~0.3mm.

Images