Flame-retardant high-weather-resistant multifunctional adhesive film for building external envelope

Abstract

The utility model relates to the technical field of adhesive films, in particular to a flame-retardant high-weather-resistant multifunctional adhesive film for building external envelope, which comprises a weather-resistant layer, a reflecting layer, an interface layer, a colloid layer and a protective layer which are connected in sequence, the weather-proof layer adopts a fluorocarbon film or a fluorocarbon coating, the reflecting layer adopts aluminum foil, the interface layer adopts glass fabric, the colloid layer adopts a coating material, the protective layer adopts a release film, and a multi-layer composite carrier surface film is used for replacing a traditional carrier surface film, so that the service life of the product in an exposed use environment is greatly prolonged; the coating has multiple functions of long-term stable weather resistance, water resistance, corrosion resistance, reflective heat insulation, flame retardance, vapor insulation and the like, and provides longer-term reliable protection for lower surface layer building enclosure materials.

Description

Technical Field

[0001] The utility model relates to the technical field of adhesive films, in particular to a flame-retardant and highly weather-resistant multifunctional adhesive film for building exterior protection. Background Art

[0002] At present, waterproof and thermal insulation film products for building exterior enclosures are manufactured using the following three standards: GB 23441-2009 "Self-adhesive polymer modified asphalt waterproof membrane", JC / T 942-2022 "Butyl rubber waterproof sealing tape", and JC / T2290-2014 "Thermal insulation waterproof cushion".

[0003] The colloid coating material carrier mask generally adopts PET, PE plastic film or aluminum plastic film, mostly single material carrier. During production, the melted self-adhesive polymer modified asphalt or butyl rubber is coated on the carrier film by pouring, casting or scraping. After cooling online, it is covered with release film, and then rolled, rolled and packaged into finished products. During construction, the release film is peeled off and the adhesive surface is tightly pasted to the dry and clean base layer.

[0004] Existing waterproof and heat-insulating film products use a single-structure PET, PE plastic film or aluminum-plastic film as a carrier covering material, and self-adhesive polymer modified asphalt or butyl rubber as a sealing and waterproof material. These products have the following defects when used in exposed environments:

[0005] 1. Low-temperature peeling of adhesive and film. The bonding interface between the covering film and the self-adhesive colloid is smooth, and adhesion is mainly achieved through intermolecular forces, namely van der Waals forces and hydrogen bonding forces. The colloid hardens under low temperature conditions, resulting in a significant reduction in adhesion or even loss of adhesion, and the adhesive film often peels off.

[0006] 2. Dimensional instability: Plastic films, especially PE materials, will expand and contract due to heat, causing the laid rolls to deform, warp, and open, and the waterproof function will fail.

[0007] 3. Insufficient anti-aging ability. PET, PE plastic film or aluminum-plastic film covering materials are usually aged and cracked within one year of exposure, exposing the colloid and greatly reducing the service life of the waterproof layer.

[0008] 4. Insufficient barrier capacity. The covering material cannot block the corrosion and aging of the colloid by light, heat, oxygen, and moisture, as well as the migration and loss of light components, which leads to rapid yellowing and accelerated aging of the surface layer of the waterproof material.

[0009] 5. The membrane material has a single function and is flammable, which cannot meet the market's multifunctional and safety requirements for external protective materials. Utility Model Content

[0010] The utility model aims to provide a flame-retardant and highly weather-resistant multifunctional adhesive film for building exterior protection, which solves the problem that traditional adhesive films are unstable when exposed to the environment.

[0011] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0012] A flame-retardant, highly weather-resistant multifunctional adhesive film for building exterior enclosure, comprising a weather-resistant layer, a reflective layer, an interface layer, a colloid layer and a protective layer connected in sequence; the weather-resistant layer is made of a fluorocarbon film or a fluorocarbon coating, the reflective layer is made of aluminum foil, the interface layer is made of fiberglass cloth, the colloid layer is made of a coating material, and the protective layer is made of a release film.

[0013] By adopting the above technical scheme: the coating material is used as the sealing and waterproof main layer, the release film is covered on the coating material as the storage and transportation protection layer of the adhesive surface, the weather-resistant layer, the reflective layer and the interface layer are used as flame-retardant protective layers, the weather-resistant layer adopts fluorocarbon film, the reflective layer adopts aluminum foil, the interface layer adopts high-strength fiberglass cloth, the weather-resistant layer, the reflective layer and the interface layer are a composite structure of the carrier mask, the multi-layer composite carrier mask is used to replace the traditional carrier mask, and the interface layer is used as the mosaic layer of the adhesive and the film, so that the service life of the product in an exposed use environment is greatly increased, and it has long-term stable weather resistance, waterproofness, and fireproof properties. It has multiple functions such as anti-corrosion, reflective insulation, flame retardant, and vapor isolation, providing more long-term and reliable protection for the lower surface building envelope materials; and the multi-layer composite carrier mask can be stably and reliably embedded and mechanically meshed with the coating material through the colloid, and through the setting of a double barrier protection layer, it perfectly shields the erosion of the sealing and waterproof main body by light, heat, oxygen, moisture and corrosive substances, and long-term guarantees The service life of the external protective structure, so the materials used in this solution are all dimensional stable, which effectively solves the problems of distortion, wrinkles, warping and opening that are prone to occur in related products of the prior art when used in exposed environments.

[0014] The fluorocarbon film is a PVDF or PVF fluorocarbon film, and its thickness is 18-38 μm.

[0015] By adopting the above technical solution: the PVDF or PVF fluorocarbon film has excellent fire retardant performance, and its flame retardant grade is B1.

[0016] The thickness of the aluminum foil is 9-14 μm.

[0017] By adopting the above technical solution: the aluminum foil has excellent fire retardant properties, and the flame retardant grade of the aluminum foil is A grade.

[0018] The glass fiber cloth is a long-staple alkali-free glass fiber woven cloth, and its weight is 80-120g.

[0019] By adopting the above technical solution: the glass fiber cloth has excellent fire retardant performance, and the flame retardant grade of the glass fiber cloth is A grade.

[0020] The coating material is self-adhesive butyl rubber or self-adhesive polymer modified asphalt. The coating material using self-adhesive butyl rubber has a thickness of not less than 0.4 mm, and the coating material using self-adhesive polymer modified asphalt has a thickness of not less than 1.2 mm.

[0021] By adopting the above technical solution: the coating material uses self-adhesive butyl rubber or self-adhesive polymer modified asphalt to improve the stability of the combination with the multi-layer composite carrier mask and the environmental protection and convenience of construction.

[0022] Technical effects and advantages of the utility model:

[0023] 1. This solution replaces the traditional carrier mask with a multi-layer composite carrier mask, which greatly increases the service life of the product in an exposed environment. It has long-term and stable weather resistance, waterproofness, corrosion resistance, reflective insulation, flame retardancy, vapor isolation and other functions, providing more long-term and reliable protection for the lower surface building envelope materials.

[0024] 2. The bonding between the multi-layer composite carrier film and the coating material in this solution mainly relies on the mechanical meshing force of the films embedded in each other, which is more reliable than the intermolecular force and completely solves the problems of low-temperature peeling and immersion peeling of the films in existing technology products.

[0025] 3. The materials used for the composite carrier membrane of this solution have high dimensional stability, which effectively solves the problems of distortion, wrinkles, warping and opening that are prone to occur in related products of the prior art when used in exposed environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the existing product;

[0027] Figure 2 This is a schematic diagram of the structure of the flame-retardant, highly weather-resistant, multifunctional adhesive film for building exterior enclosures of the present application.

[0028] Figure numerals: 1, weather-resistant layer; 2, reflective layer; 3, interface layer; 4, colloid layer; 5, protective layer; 100, carrier mask; 200, main body; 300, release film. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1As shown, the existing product uses a coating material as the main body 200, and one side of the coating material uses PET, PE or aluminum-plastic film as a carrier mask 100, and the other side is covered with a release film 300. When the existing product is used with the film exposed, due to the insufficient anti-aging ability of the carrier film material on the air side, aging cracking, wrinkles, warping, film peeling and other phenomena often begin to appear in less than a year, and the main body sealing and waterproof layer cannot be protected, resulting in premature aging and failure of the sealing and waterproof structure, and the waterproof structure layer is made of flammable materials, which poses a safety hazard.

[0031] In view of this, the present invention solves the problem of instability of the traditional adhesive film when exposed to the environment through the following embodiments 1 and 2.

[0032] Example 1

[0033] This embodiment provides a flame retardant, highly weather-resistant, multifunctional adhesive film for building exterior protection, such as Figure 2 As shown, the adhesive film includes a weather-resistant layer 1, a reflective layer 2, an interface layer 3, a colloid layer 4 and a protective layer 5 which are connected in sequence; the weather-resistant layer 1 is made of fluorocarbon film, the reflective layer 2 is made of aluminum foil, the interface layer 3 is made of glass fiber cloth, the colloid layer 4 is made of coating material, and the protective layer 5 is made of release film.

[0034] Furthermore, the adhesive film uses a coating material as a sealing and waterproof main layer, a release film is coated on the coating material as an adhesive surface storage and transportation protection layer 5, and uses a weather-resistant layer, a reflective layer 2 and an interface layer 3 as flame-retardant protective layers. The weather-resistant layer uses a fluorocarbon film, the reflective layer 2 uses aluminum foil, and the interface layer uses high-strength fiberglass cloth. The weather-resistant layer 1, the reflective layer 2, and the interface layer 3 are a carrier mask composite structure. This multi-layer composite carrier mask is used to replace the traditional carrier mask, and the interface layer 3 is used as a mosaic layer between the adhesive and the film, thereby greatly increasing the service life of the product in an exposed use environment, and having long-term stable weather resistance and waterproofness. , anti-corrosion, reflective insulation, flame retardant, vapor isolation and other functions, providing more long-term and reliable protection for the lower surface building envelope materials; and the multi-layer composite carrier mask can be stably and reliably embedded and mechanically meshed with the coating material through the colloid, and through the setting of the double barrier protection layer, it perfectly shields the erosion of the sealing and waterproof main body by light, heat, oxygen, moisture and corrosive substances, and long-term guarantees the service life of the external protective structure. Therefore, the materials used in this solution are all dimensional stable, which effectively solves the problems of distortion, wrinkles, warping and opening that are prone to occur in related products of the prior art when used in exposed environments.

[0035] In this embodiment, the fluorocarbon film is a PVDF or PVF fluorocarbon film, and its thickness is 18-38 μm. The use of PVDF or PVF fluorocarbon film has excellent fire retardant properties, and its flame retardant grade is B1. The thickness of the aluminum foil is 9-14 μm. The glass fiber cloth is a long-fiber alkali-free glass fiber woven cloth, and its weight is 80-120g. Both the aluminum foil and the glass fiber cloth have excellent fire retardant properties, and the flame retardant grades of the aluminum foil and the glass fiber cloth are both A.

[0036] Furthermore, the coating material is self-adhesive butyl rubber, and the coating material adopts self-adhesive butyl rubber and its thickness is not less than 0.4mm. The coating material adopts self-adhesive butyl rubber to improve the stability of the combination with the multi-layer composite carrier mask and the environmental protection and convenience of construction.

[0037] Example 2

[0038] The multifunctional adhesive film provided in this embodiment includes a weather-resistant layer 1, a reflective layer 2, an interface layer 3, a colloid layer 4 and a protective layer 5 which are connected in sequence; further, the difference between this embodiment and embodiment 1 is that the weather-resistant layer 1 adopts a fluorocarbon coating, the reflective layer 2 adopts aluminum foil, the interface layer 3 adopts fiberglass cloth, the colloid layer 4 adopts a coating material, and the protective layer 5 adopts a release film. The fluorocarbon coating is a PVDF fluorocarbon coating with a thickness of 18-38μm, and the coating material adopts self-adhesive polymer modified asphalt with a thickness of not less than 1.2mm.

[0039] The above-mentioned Embodiment 1 and Embodiment 2 achieve high stability and versatility of the film in an exposed environment by optimizing the selection and composite structure of the covering material.

[0040] This scheme also provides the preparation steps of the multifunctional adhesive film:

[0041] Step 1: Prepare composite carrier mask

[0042] First, the high-temperature dewaxed glass fiber cloth is compounded with aluminum foil to form aluminum foil glass fiber cloth, and then the aluminum foil glass fiber cloth is compounded with fluorocarbon film to form a carrier mask. The composites of glass fiber cloth and aluminum foil, and aluminum foil glass fiber cloth and fluorocarbon film are all compounded by a flame-retardant two-component reaction-cured polyurethane glue wet process. The production process is: unwinding - corona - glue coating - pre-compounding - rolling - winding down line - aging - online rewinding - trimming - winding and packaging. The aging time is not less than 72 hours, and the constant temperature is 60℃.

[0043] Step 2: Preparation of multifunctional film

[0044] During compounding, the melted adhesive is applied to the glass fiber surface of the carrier mask by pouring, scraping or casting, and then covered with a release film after cooling, and then rolled, rolled and packaged for offline. The production process is: melt adhesive - unroll - glue coating - cooling - release film coating - rolling - rolling - packaging for offline.

[0045] The composite carrier mask prepared by this step has a flame retardant property of B1-A2 level, a UV blocking rate of 100%, a far-infrared reflectivity of more than 90%, and will not delaminate, crack, powder or change color after UV accelerated aging for 6000 hours or more, a mechanical property retention rate of more than 90%, and has long-lasting vapor and oil isolation and corrosion resistance.

[0046] To summarize, this solution replaces the traditional carrier mask with a multi-layer composite carrier mask, which greatly increases the service life of the product in an exposed environment. It has long-term and stable weather resistance, waterproofness, corrosion resistance, reflective insulation, flame retardancy, vapor isolation and other functions, providing longer-term and reliable protection for the underlying surface building envelope materials; and the bonding between the multi-layer composite carrier film and the coating material mainly relies on the mechanical meshing force of the mutual embedding of the film, which is more reliable than the intermolecular force, and completely solves the problems of low-temperature peeling and infiltration peeling of the film of the prior art products; and the materials used for the composite carrier film have high dimensional stability, which effectively solves the problems of distortion, wrinkles, warping and opening that are prone to occur in related products of the prior art when used in an exposed environment.

[0047] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flame-retardant, highly weather-resistant, multifunctional adhesive film for building exterior protection, characterized in that: The invention comprises a weather-resistant layer (1), a reflective layer (2), an interface layer (3), a colloid layer (4) and a protective layer (5) which are connected in sequence; the weather-resistant layer (1) is made of a fluorocarbon film or a fluorocarbon coating, the reflective layer (2) is made of aluminum foil, the interface layer (3) is made of glass fiber cloth, the colloid layer (4) is made of a coating material, and the protective layer (5) is made of a release film.

2. The flame-retardant, highly weather-resistant, multifunctional adhesive film for building exterior enclosure according to claim 1, characterized in that: The fluorocarbon film is a PVDF or PVF fluorocarbon film, and its thickness is 18-38 μm.

3. The flame-retardant, highly weather-resistant, multifunctional adhesive film for building exterior protection as claimed in claim 2, characterized in that: The thickness of the aluminum foil is 9-14 μm.

4. The flame-retardant, highly weather-resistant, multifunctional adhesive film for building exterior protection as claimed in claim 3, characterized in that: The glass fiber cloth is a long-staple alkali-free glass fiber woven cloth, and its weight is 80-120g.

5. The flame-retardant, highly weather-resistant, multifunctional adhesive film for building exterior protection as claimed in claim 4, characterized in that: The coating material is self-adhesive butyl rubber or self-adhesive polymer modified asphalt. The coating material using self-adhesive butyl rubber has a thickness of not less than 0.4 mm, and the coating material using self-adhesive polymer modified asphalt has a thickness of not less than 1.2 mm.

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