Transmission type radiation intelligent building membrane and preparation method thereof

Abstract

The invention discloses a transmission type radiation intelligent building film. The building film sequentially comprises a release film, a bonding layer, a one-way perspective functional layer and an infrared radiation base layer. The invention further discloses a preparation method of the transmission type radiation intelligent building membrane. According to the building film, by arranging the release film and the bonding layer, when the building film is specifically used, the release film is torn off, and the building film can be directly bonded to a corresponding scene through the bonding layer, so that the building film is convenient and practical; besides, by arranging the one-way perspective function layer composed of the metal layer and the metal compound layer, the building film has low internal reflectivity, the transmission film has excellent privacy, and indoor privacy can be protected; through the arrangement of the infrared radiation base layer, the building film not only has excellent heat insulation performance, but also has the effects of excellent infrared radiation blocking thermal efficiency and the like; in conclusion, the building film not only has excellent heat insulation performance, but also has the excellent effects of high privacy, low light reflection, external adhesion and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a transmission-type radiation intelligent building membrane and a preparation method thereof. Background Art

[0002] Building shading, heat insulation and cooling design is an important part of building energy-saving design, and is of great significance to saving building energy consumption, improving indoor light environment and indoor thermal comfort in summer. Building shading is a necessary measure to avoid direct sunlight into the room, prevent the building from being overheated by the sun, thereby reducing the indoor temperature, appropriately reducing strong light, reducing glare, and protecting objects. The architectural design using membrane structure for shading and heat insulation is one of the most concerned building energy-saving solutions at present.

[0003] Membrane structure is a new type of long-span space structure developed in recent decades. It is a space structure with a certain rigidity formed by applying tension to a fabric (membrane material) with excellent performance through supporting components (such as rigid beams, columns, and flexible cables) or pressurizing the air in the membrane. The membrane material is the most important component of this long-span space structure. It is generally composed of a matrix and a polymer, that is, a polymer coating and a substrate layer bonded together by a specific processing technology according to the required thickness and width. The matrix is ​​a high-strength polyester fiber. The strength of the membrane material is mainly provided by this layer, and the coating mainly ensures the density of the membrane material.

[0004] Compared with the earth's environment, the outer space with a temperature of 3K and the sun with a temperature of 5800K are inexhaustible sources of cold and heat. Sky radiation cooling and solar thermal energy are ultra-long-distance direct utilization methods of the outer space and the sun, which can obtain clean cold and heat. Sky radiation cooling refers to the radiator using the atmospheric window in the 8-13μm mid-infrared band to radiate heat to the low-temperature outer space to achieve a cooling effect and obtain cold. Solar thermal energy refers to the spectrally selective absorption coating absorbing solar radiation and converting it into heat. The two technologies have the same principles and similar devices. If the two physical processes are integrated into the same device, it can not only achieve the dual functional characteristics of cooling in high-temperature environments and collecting heat in low-temperature weather, but also improve the time utilization rate and energy benefits of the device.

[0005] At present, many architectural membrane materials have excellent thermal insulation properties, but cannot achieve the effects of high privacy, low reflection and external attachment. They have single functions and cannot meet the growing diversified requirements in the market, which limits their promotion and application in the market. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the main purpose of the present invention is to provide a transmissive radiation intelligent building film with excellent thermal insulation performance, high privacy, low reflection, and external application; the present invention also provides a method for preparing the transmissive radiation intelligent building film.

[0007] The objective of the present invention is achieved through the following technical solutions:

[0008] A transmission type radiation intelligent architectural film, the architectural film comprises a release film, an adhesive layer, a one-way perspective functional layer and an infrared radiation base layer in sequence; wherein the one-way perspective functional layer is composed of a metal layer and a metal compound layer, and the one-way perspective glass film is attached to the glass surface through the adhesive layer.

[0009] In certain specific embodiments, the infrared radiation base layer includes the following components by weight percentage: polyester resin: 100 parts, silicon dioxide 5-15 parts, plasticizer 3-5 parts, stabilizer 1-3 parts, ultraviolet absorber 0.6-1 parts, mildew-proof additive 0.6-1.2 parts, thermal insulation rutile titanium dioxide 10-20 parts, high refractive index glass bead reflector 10-20 parts.

[0010] Furthermore, the polyester resin is one of polyethylene terephthalate, polycarbonate and polymethyl methacrylate.

[0011] Furthermore, the plasticizer is one or more of diisononyl phthalate, octyl adipate, and dialkyl adipate; the stabilizer is one or more of SO203, methyl tin mercaptan, butyl tin mercaptan, and zinc stearate; the ultraviolet absorber is one or more of UV-0601, UV-531, and UVP-327; and the anti-mildew auxiliary agent is a mixture of phthalates and diisononyl cyclohexane, and the mass ratio of the two is 1:1-3.

[0012] In some specific embodiments, the specific surface area of ​​the silicon dioxide is 150-200 m 2 / g, and the particle size of the thermal insulation rutile titanium dioxide is 400-600 mesh.

[0013] In some specific embodiments, the thickness of the metal layer is 5-25 nm, the total thickness of the metal compound layer is 30-120 nm, and the thickness of the metal compound layers on both sides of the metal layer are different and the thickness difference is greater than 20 nm.

[0014] Furthermore, the metal layer is an alloy of one or more of SS, Ni, Cr, Ti, Mo, and Al; and the metal compound layer is an oxide, nitride, or oxynitride of an alloy of one or more of Al, Zn, Nb, Sn, Ga, Zr, Hf, In, Ti, Ta, and Si.

[0015] Furthermore, the metal layer is a high vacuum evaporation coating or a magnetron sputtering coating manufactured by physical vapor deposition, and the metal compound layer is a high vacuum evaporation coating or a magnetron sputtering coating manufactured by physical vapor deposition.

[0016] In some specific embodiments, the bonding layer is a silicone adhesive with a thickness of 10-50 μm.

[0017] A method for preparing the aforementioned transmission type radiation intelligent building membrane comprises the following steps:

[0018] S1. Weighing polyester resin, plasticizer, stabilizer, ultraviolet absorber, mildew-proof additive, silicon dioxide, heat-insulating rutile titanium dioxide, and high-refractive index glass microbead reflector according to the formula amount, and then mixing, stirring, grinding, cooling, and standing the components to obtain polyester paste resin slurry;

[0019] S2, preheating and shaping the base mesh cloth, and then applying a primer coating of the polyester paste resin slurry in step S1 on the base mesh cloth, and pre-curing after coating to obtain a preformed product;

[0020] S3, sequentially pasting metal layer films on the bottom surface of the preform in step S2, and then drying and curing to obtain a semi-finished product;

[0021] S4, coating an adhesive layer on the other side of the metal film layer of the semi-finished product obtained in step S3, and then attaching a release film, cutting and rolling up after the processing is completed to obtain a transmission-type radiation intelligent building film.

[0022] Compared with the prior art, the present invention has at least the following advantages:

[0023] 1) The transmission-type radiation intelligent architectural film provided by the present invention comprises a release film, an adhesive layer, a one-way perspective functional layer and an infrared radiation base layer; by setting the release film and the adhesive layer, when in use, by tearing off the release film, the architectural film can be directly pasted to the corresponding scene through the adhesive layer, which is convenient and practical; in addition, by setting the one-way perspective functional layer composed of a metal layer and a metal compound layer, the architectural film has a low internal reflectivity, which can not only protect the privacy of the room, but also greatly reduce the indoor glare and increase the comfort of the human eye; and by setting the infrared radiation base layer, the architectural film not only has excellent thermal insulation performance, but also has excellent infrared radiation heat insulation efficiency and the like; in summary, the architectural film of the present invention not only has excellent thermal insulation performance, but also has excellent effects such as high privacy, low reflection, and external attachment.

[0024] 2) The infrared radiation base layer in the present invention adopts a polyester resin with high reflectivity in the near-infrared band of sunlight (760nm-2500nm) as a basic material, so that the architectural film can achieve an improvement in infrared heat blocking efficiency, thereby improving the total solar energy blocking rate of the architectural film; at the same time, by adding silicon dioxide, the mechanical properties of the infrared radiation base layer are further improved; by adding heat-insulating rutile titanium dioxide, which has a high refractive index and can reflect sunlight and other thermal radiation, the heat insulation performance and aging resistance of the infrared radiation base layer are significantly improved, and the service life of the infrared radiation base layer is extended; and by adding a high-refractive-index glass bead reflector, the high reflectivity of the infrared radiation base layer is significantly improved; finally, combined with other existing components of the infrared radiation base layer, the infrared radiation base layer has good mechanical properties, chemical stability and weather resistance, as well as excellent radiation heat insulation performance.

[0025] 3) The one-way perspective functional layer in this application is formed by attaching a one-way perspective glass film containing the one-way perspective functional layer 5 to the inner surface of ordinary float glass (3 mm thickness).

[0026] The visible light reflectivity of the inner surface (inside of the glass) is as low as 10% or less, preferably 8% or less; while the visible light reflectivity of the outer surface (outside of the glass) is higher than 20%, preferably higher than 25%. In addition, the appearance color of the glass film is neutral, or gray, or light blue, or light green, which is very beautiful. The adjustable range of visible light transmittance is 15-65%, which is suitable for the needs of public building curtain walls, homes, cars, etc. to prevent peeks and privacy leaks.

[0027] 4) The adhesive layer in this application is a silicone adhesive with a thickness of 10-50 μm. The silicone adhesive has excellent bonding and weather resistance properties. It is combined with the one-way perspective functional layer and the infrared radiation base layer to ensure that the architectural membrane is durable, strong, moisture-proof, and resistant to high and low temperatures. It has excellent weather resistance and can be used in outdoor atmospheric environments for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for use in the specific embodiments or the description of the prior art will be briefly introduced below.

[0029] Figure 1 This is a schematic diagram of the structure of the transmission-type radiation intelligent building membrane provided by the present invention. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following embodiments are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0031] When a certain amount, concentration or other value or parameter is expressed in the form of a range, a preferred range, or a preferred upper and lower numerical limit, it should be understood that it is equivalent to specifically revealing any range by combining any pair of upper range limits or preferred numerical values ​​with any lower range limit or preferred numerical value, regardless of whether the range is specifically disclosed. Unless otherwise indicated, the numerical range values ​​listed herein include the endpoints of the range, and all integers and fractions within the range.

[0032] Unless otherwise indicated, all percentages, parts, ratios, etc. herein are by weight.

[0033] The materials, methods, and examples herein are illustrative and are not to be construed as limiting unless specifically stated.

[0034] In the following examples, the plasticizer is diisononyl phthalate; the stabilizer is zinc stearate; the ultraviolet absorber is UV-0601; and the mildew-proof auxiliary agent is a mixture of phthalate and diisononylcyclohexane, with a mass ratio of 1:2.

[0035] The specific surface area of ​​the silicon dioxide is 150 m 2 / g, and the particle size of the thermal insulation rutile titanium dioxide is 400 mesh.

[0036] The one-way perspective functional layer is composed of a metal layer and a metal compound layer, wherein the thickness of the metal layer is 5-25nm, the total thickness of the metal compound layer is 30-120nm, the thickness of the metal compound layers on both sides of the metal layer are different and the thickness difference is greater than 20nm; wherein the metal layer is Ti; the metal compound layer is Al2O3; and the metal layer is a high vacuum evaporation coating or magnetron sputtering coating manufactured by physical vapor deposition, and the metal compound layer is a high vacuum evaporation coating or magnetron sputtering coating manufactured by physical vapor deposition; of course, the preparation of the metal layer and the metal compound layer can also be obtained by other conventional technologies in the field.

[0037] The bonding layer is a silicone adhesive with a thickness of 10-50 μm. The silicone adhesive is purchased through commercial channels.

[0038] Example 1

[0039] This embodiment provides a method for preparing a transmission-type radiation intelligent building membrane, comprising the following steps:

[0040] S1, according to the formula, 100 parts by weight of polyester resin, 3 parts by weight of plasticizer, 1 part by weight of stabilizer, 0.6 parts by weight of ultraviolet absorber, 0.6 parts by weight of mildew-proofing agent, 5 parts by weight of silicon dioxide, 20 parts by weight of heat-insulating rutile titanium dioxide, and 10 parts by weight of high-refractive index glass microbead reflector are weighed, and then the components are mixed, stirred, ground, cooled, and allowed to stand to obtain polyester paste resin slurry;

[0041] S2, preheating and shaping the base mesh, and then applying a primer coating of the polyester paste resin slurry in step S1 on the base mesh, and pre-curing after coating (the thickness of the infrared radiation base layer is 50 μm) to obtain a preformed product;

[0042] S3, sequentially pasting metal layer films on the bottom surface of the preformed product in step S2, and then drying and curing (wherein the thickness of the metal layer is 15 nm, the total thickness of the metal compound layer is 60 nm, the thickness of the metal compound layers on both sides of the metal layer is different and the thickness difference is greater than 20 nm), to obtain a semi-finished product;

[0043] S4, coating the other side of the metal film layer of the semi-finished product obtained in step S3 with an adhesive layer (with a thickness of 10-50 μm), and then attaching a release film, and after the processing is completed, cutting and rolling are performed to obtain a transmission-type radiation intelligent building film.

[0044] The prepared transmission radiation intelligent building film is as follows Figure 1 As shown, it includes a release film 4, an adhesive layer 3, a one-way perspective functional layer 2 and an infrared radiation base layer 1 in sequence; wherein the one-way perspective functional layer is composed of a metal layer and a metal compound layer, and the one-way perspective glass film is adhered to the glass surface through the adhesive layer.

[0045] Example 2

[0046] This embodiment provides a method for preparing a transmission-type radiation intelligent building membrane, comprising the following steps:

[0047] S1, according to the formula, 100 parts by weight of polyester resin, 4 parts by weight of plasticizer, 2 parts by weight of stabilizer, 0.8 parts by weight of ultraviolet absorber, 1.0 parts by weight of mildew-proofing agent, 10 parts by weight of silicon dioxide, 15 parts by weight of heat-insulating rutile titanium dioxide, and 15 parts by weight of high-refractive index glass microbead reflector are weighed, and then the components are mixed, stirred, ground, cooled, and allowed to stand to obtain polyester paste resin slurry;

[0048] S2, preheating and shaping the base mesh, and then applying a primer coating of the polyester paste resin slurry in step S1 on the base mesh, and pre-curing after coating (the thickness of the infrared radiation base layer is 75 μm) to obtain a preformed product;

[0049] S3, sequentially pasting metal layer films on the bottom surface of the preformed product in step S2, and then drying and curing (wherein the thickness of the metal layer is 15 nm, the total thickness of the metal compound layer is 60 nm, the thickness of the metal compound layers on both sides of the metal layer is different and the thickness difference is greater than 20 nm), to obtain a semi-finished product;

[0050] S4. Coat the other side of the metal film layer of the semi-finished product obtained in step S3 with an adhesive layer (15 μm thick), and then attach a release film. After the treatment, cut and roll up to obtain a transmission-type radiation intelligent building film.

[0051] The prepared transmission-type radiation intelligent building film comprises a release film, an adhesive layer, a one-way perspective functional layer and an infrared radiation base layer in sequence; wherein the one-way perspective functional layer is composed of a metal layer and a metal compound layer, and the one-way perspective glass film is adhered to the glass surface through the adhesive layer.

[0052] Example 3

[0053] This embodiment provides a method for preparing a transmission-type radiation intelligent building membrane, comprising the following steps:

[0054] S1, according to the formula, 100 parts by weight of polyester resin, 5 parts by weight of plasticizer, 3 parts by weight of stabilizer, 0.1 parts by weight of ultraviolet absorber, 1.2 parts by weight of mildew-proof auxiliary agent, 15 parts by weight of silicon dioxide, 10 parts by weight of heat-insulating rutile titanium dioxide, and 20 parts by weight of high-refractive index glass microbead reflector are weighed, and then the components are mixed, stirred, ground, cooled, and allowed to stand to obtain polyester paste resin slurry;

[0055] S2, preheating and shaping the base mesh, and then performing a primer coating on the base mesh with the polyester paste resin slurry in step S1, and performing pre-curing after coating (the thickness of the infrared radiation base layer is 100 μm) to obtain a preformed product;

[0056] S3, sequentially pasting metal layer films on the bottom surface of the preformed product in step S2, and then drying and curing (wherein the thickness of the metal layer is 15 nm, the total thickness of the metal compound layer is 60 nm, the thickness of the metal compound layers on both sides of the metal layer is different and the thickness difference is greater than 20 nm), to obtain a semi-finished product;

[0057] S4. Coat the other side of the metal film layer of the semi-finished product obtained in step S3 with an adhesive layer (with a thickness of 25 μm), and then attach a release film. After the treatment is completed, cut and roll up to obtain a transmission-type radiation intelligent building film.

[0058] The prepared transmission-type radiation intelligent building film comprises a release film, an adhesive layer, a one-way perspective functional layer and an infrared radiation base layer in sequence; wherein the one-way perspective functional layer is composed of a metal layer and a metal compound layer, and the one-way perspective glass film is adhered to the glass surface through the adhesive layer.

[0059] Performance Testing:

[0060] Taking Example 2 as an example, the present application conducted a performance test on the prepared transmission type radiation intelligent building membrane, and the results are shown in Table 1:

[0061] Table 1 Performance parameters of transmission radiation intelligent building membrane

[0062] Technical parameter attributes index Visible light transmittance ≤30％ Visible light reflectance ≤16％ Infrared blocking rate ≥85％ UV blocking rate ≥99％ Total solar energy blocking rate ≥60％ Radiant cooling power <![CDATA[≥130W / m 2 %]]> Weather resistance 600H

[0063] From the data in the table, it can be seen that the transmission type radiation intelligent building film provided by the present invention has a visible light transmittance of ≤30%, indicating that it has excellent privacy performance; its visible light reflectivity is ≤16%, infrared blocking rate is ≥85%, ultraviolet blocking rate is ≥99%, total solar energy blocking rate is ≥60%, and radiation cooling power is ≥130W / m 2 %, indicating that it has excellent thermal insulation performance; its weather resistance is 600H, indicating that it has excellent weather resistance; in summary, the architectural membrane is durable, strong, moisture-proof, resistant to high and low temperatures, has excellent weather resistance, and can be used in outdoor atmospheric environments for a long time.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A transmission type radiation intelligent building membrane, characterized in that: The architectural film comprises a release film, an adhesive layer, a one-way perspective functional layer and an infrared radiation base layer in sequence; wherein the one-way perspective functional layer is composed of a metal layer and a metal compound layer, and the one-way perspective glass film is attached to the glass surface through the adhesive layer.

2. The transmission type radiation intelligent architectural membrane according to claim 1, characterized in that: The infrared radiation base layer includes the following components by weight percentage: 100 parts of polyester resin, 5-15 parts of silicon dioxide, 3-5 parts of plasticizer, 1-3 parts of stabilizer, 0.6-1 parts of ultraviolet absorber, 0.6-1.2 parts of mildew-proof auxiliary agent, 10-20 parts of heat-insulating rutile titanium dioxide, and 10-20 parts of high-refractive index glass bead reflector.

3. The transmission type radiation intelligent architectural membrane according to claim 2, characterized in that: The polyester resin is one of polyethylene terephthalate, polycarbonate and polymethyl methacrylate.

4. The transmission type radiation intelligent architectural membrane according to claim 3, characterized in that: The plasticizer is one or more of diisononyl phthalate, octyl adipate, and dialkyl adipate; the stabilizer is one or more of S0203, methyl tin mercaptan, butyl tin mercaptan, and zinc stearate; the ultraviolet absorber is one or more of UV-0601, UV-531, and UVP-327; and the mildew-proof auxiliary agent is a mixture of phthalates and diisononyl cyclohexane, and the mass ratio of the two is 1:1-3.

5. The transmission type radiation intelligent architectural membrane according to claim 4, characterized in that: The specific surface area of ​​the silicon dioxide is 150-200m 2 / g, and the particle size of the thermal insulation rutile titanium dioxide is 400-600 mesh.

6. The transmission type radiation intelligent architectural membrane according to claim 1, characterized in that: The thickness of the metal layer is 5-25 nm, the total thickness of the metal compound layer is 30-120 nm, and the thickness of the metal compound layers on both sides of the metal layer are different and the thickness difference is greater than 20 nm.

7. The transmission type radiation intelligent architectural membrane according to claim 6, characterized in that: The metal layer is one or an alloy of two or more of SS, Ni, Cr, Ti, Mo, and Al; the metal compound layer is an oxide, nitride, or oxynitride of one or an alloy of two or more of Al, Zn, Nb, Sn, Ga, Zr, Hf, In, Ti, Ta, and Si.

8. The transmission type radiation intelligent architectural membrane according to claim 7, characterized in that: The metal layer is a high vacuum evaporation coating or a magnetron sputtering coating produced by physical vapor deposition, and the metal compound layer is a high vacuum evaporation coating or a magnetron sputtering coating produced by physical vapor deposition.

9. The transmission type radiation intelligent architectural membrane according to claim 1, characterized in that: The bonding layer is a silicone adhesive with a thickness of 10-50 μm.

10. A method for preparing a transmission-type radiation intelligent architectural membrane according to any one of claims 1 to 9, characterized in that: The steps include: S1. Weighing polyester resin, plasticizer, stabilizer, ultraviolet absorber, mildew-proof additive, silicon dioxide, heat-insulating rutile titanium dioxide, and high-refractive index glass microbead reflector according to the formula amount, and then mixing, stirring, grinding, cooling, and standing the components to obtain polyester paste resin slurry; S2, preheating and shaping the base mesh cloth, and then applying a primer coating of the polyester paste resin slurry in step S1 on the base mesh cloth, and pre-curing after coating to obtain a preformed product; S3, sequentially pasting metal layer films on the bottom surface of the preform in step S2, and then drying and curing to obtain a semi-finished product; S4, coating an adhesive layer on the other side of the metal film layer of the semi-finished product obtained in step S3, and then attaching a release film, cutting and rolling up after the processing is completed to obtain a transmission-type radiation intelligent building film.

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