CN210897307U - Green electric building material - Google Patents
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- CN210897307U CN210897307U CN201921729088.5U CN201921729088U CN210897307U CN 210897307 U CN210897307 U CN 210897307U CN 201921729088 U CN201921729088 U CN 201921729088U CN 210897307 U CN210897307 U CN 210897307U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model discloses a green electric building material, which comprises a laminating piece, a color steel tile layer, a connector, a junction box for a lead and a bonding layer, wherein the connector is connected with the junction box and is used for electrical connection in the green electric building material; the laminated piece comprises a back plate, wherein the bonding layer is arranged between the back plate and the color steel tile layer; the color steel tile has the advantages of light weight, high strength, rich color, convenient and fast construction, earthquake resistance, fire resistance, rain resistance, long service life and no maintenance.
Description
Technical Field
The utility model relates to a building materials field specifically is new forms of energy electricity generation, photovoltaic application, green building materials technical field, especially relates to a green electricity building materials based on composite packaging material.
Background
With the increasing environmental protection pressure, the green development becomes the subject of the world economy increasingly. Ecological civilization construction and green development are improved to unprecedented heights in China, and building energy conservation is one of important measures for promoting green development.
Since the innovation is opened, the infrastructure construction and real estate investment of China are continuously increased, and the proportion of building energy consumption in the total social energy consumption is increased. Authoritative data show that the building energy consumption of China only accounts for 10% of the total social energy consumption at the end of the last 70 th century, and the building energy consumption is increased to more than three times of the total social energy consumption by the end of the 'twelve-five' period. As is known, more than 90% of the existing buildings and buildings under construction in China are high-energy-consumption buildings, and the energy-saving work of the buildings is far in priority.
The green building refers to a building which can save resources (energy, land, water and materials) to the maximum extent, protect the environment, reduce pollution, provide healthy, applicable and efficient use space for people and harmoniously live with the nature in the whole life cycle of the building. Compared with the traditional building, the green building has the advantages that the average energy saving rate is 58%, the utilization rate of a non-traditional water source is 15%, and the utilization rate of recyclable materials is 7.7%. The green building is a new thing, and the traditional building is upgraded to the green building, so that the green building material can not be widely applied.
The photovoltaic power generation combined with the building is a development trend of the current green building and is an important application form of the current distributed photovoltaic power generation. The Building can be classified into Building Integrated Photovoltaics (BIPV) and Building Attached Photovoltaics (BAPV) according to different installation modes of Building combination.
The photoelectric building integration is a new technology for implementing a green building strategy and realizing sustainable development of human beings. The integration of photoelectric buildings is a new field of building formed by organically combining building technology, art and photovoltaic power generation technology. The BIPV not only has the function of an outer protective structure, but also can generate electric energy for buildings. In the process of developing the integration of photoelectric buildings, the traditional building structure is fused with the modern photovoltaic engineering technology and concept, a photovoltaic power generation system takes a building as a carrier and is fused with the building into a whole, and the photovoltaic power generation technology and required equipment are taken as building elements and are brought into the whole process of building design, so that the solar system becomes an inseparable part of a building composition, the perfect combination with the building is achieved, and the building and the photovoltaic are not bonded as two layers of skins.
The installation mode of building integrated photovoltaic is that the photovoltaic cell and building materials such as tile, brick, building material, glass and the like are compounded together to form an inseparable building component or building material, so as to form a photovoltaic tile roof, a photovoltaic curtain wall and the like, and the requirement on photovoltaic components is higher. The photovoltaic module not only needs to meet the functional requirements of photovoltaic power generation, but also needs to give consideration to the basic functional requirements of buildings, and even can improve the aesthetic feeling of the buildings.
At present, the most widely applied photovoltaic building attachment in China is a common photovoltaic module which is installed on the original building, does not replace building materials or building components, and is directly installed on a roof or a photovoltaic system attached to a wall surface. The common photovoltaic module (the solar battery module is packaged by toughened glass) usually has larger mass, the weight per square meter of the common photovoltaic module reaches more than 10 kilograms, and at least reaches more than 12 kilograms per square meter by adding the mounting support structure. In the process of installing the building and the household roof, the weight is heavy, the labor intensity of installation is high, and the implementation is difficult; in some occasions, the building can not be installed due to the limitation of the building load bearing; the product has single appearance and is not easy to change to meet the requirements of different building aesthetics, and the like.
BAPV does not increase the water and wind resistance of a building. Moreover, BAPV can increase building loads, affecting the overall effectiveness of the building. In addition, BAPV also has the problem of repeated construction for building surfaces, which wastes building materials seriously. The BIPV is relatively more intelligent, is a future development trend, and is a main solar power generation system pursued by people today.
Therefore, those skilled in the art are working on developing a green building material based on composite packaging material for building integration of photovoltaic and electric buildings.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects in the prior art, the technical problem to be solved in the present invention is to provide a green electrical building material based on composite packaging material that is light and suitable for installing more occasions.
In order to achieve the above object, the utility model provides a green electric building materials, including lamination piece or/and various steel tile layer, the lamination piece includes superimposed fluoroplastics thin layer in proper order, first encapsulating material layer, first encapsulation plastic film layer, solar cell layer, second encapsulating material layer and backplate, first, second encapsulating material layer includes stratum basale and mixed type thermosetting powder coating, various steel tile layer set up in the backplate is kept away from one side of second encapsulating material layer.
Further, the hybrid thermosetting powder coating raw material comprises acrylic resin, an acrylic resin curing agent, polyester resin and a polyester resin curing agent.
Further, the weight ratio of the substrate to the hybrid thermosetting powder coating ranges from 20 to 60 parts: 40-80 parts.
Further, the substrate has a weight per unit area ranging from 30 to 400g/m2, and the hybrid thermosetting powder coating is disposed on the substrate in a weight per unit area ranging from 70 to 400g/m 2.
Further, in the hybrid thermosetting powder coating, the weight ratio of the acrylic resin to the polyester resin ranges from 30 to 70 parts: 70-30 parts.
Further, in the hybrid thermosetting powder coating, the weight ratio of the acrylic resin to the polyester resin ranges from 40 to 60 parts: 60-40 parts.
Furthermore, the gel time range of the mixed thermosetting powder coating is 50-1000s, the inclined plate flow range is 10-40cm, and the softening point temperature range is 80-120 ℃.
Further, the acrylic resin curing agent is different from the polyester resin.
Further, the polyester resin curing agent is different from the acrylic resin.
Further, the acrylic resin curing agent is any one or a mixture of several of carboxyl polyester resin, hydroxyl polyester resin, triglycidyl isocyanurate, triglycidyl trimellitate, diglycidyl terephthalate, hydroxyalkylamide, isocyanate, blocked polyisocyanate, uretdione, phthalic anhydride, trimellitic anhydride, sebacic acid, undecanedioic acid, dodecanedioic acid, tridecanedioic acid, tetradecanedioic acid, pentadecanedioic acid, hexadecanedioic acid, dicyandiamide, hydrogen sebacate dihydrazide, diaminodiphenyl sulfone, tetramethylglycoluril, amino resin and hydrogenated epoxy in any ratio.
Further, the polyester resin curing agent is any one or a mixture of several of GMA acrylic resin, triglycidyl isocyanurate, triglycidyl trimellitate, diglycidyl terephthalate, hydroxyalkylamide, isocyanate, blocked polyisocyanate, uretdione, phthalic anhydride, trimellitic anhydride, diaminodiphenyl sulfone, tetramethylglycoluril, amino resin and hydrogenated epoxy in any proportion.
Furthermore, the acrylic resin is formed by mixing one or more of GMA acrylic resin, hydroxyl acrylic resin or carboxyl acrylic resin or bifunctional acrylic resin.
Furthermore, the acrylic resin is polymerized by one or more monomers of acrylic acid, methyl acrylate, ethyl acrylate, n-butyl acrylate, isobutyl acrylate, hydroxypropyl acrylate, glycidyl acrylate, methacrylic acid, methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, hydroxypropyl methacrylate, glycidyl methacrylate, styrene and acrylonitrile.
Furthermore, the acrylic resin is GMA acrylic resin, the refractive index range is 1.40-1.50, the epoxy equivalent range is 800g/eq, the glass transition temperature range is 40-70 ℃, the viscosity range is 75-600 Pa.s, and the softening point temperature range is 100-120 ℃.
Furthermore, the acrylic resin is hydroxyl acrylic resin, the refractive index range is 1.40-1.50, the hydroxyl value range is 15-70mgKOH/g, the glass transition temperature range is 40-70 ℃, the viscosity range is 75-600 Pa.s, and the softening point temperature range is 100-120 ℃.
Further, the acrylic resin is carboxyl acrylic resin, the refractive index range is 1.40-1.50, the acid value range is 15-85mgKOH/g, the glass transition temperature range is 40-70 ℃, the viscosity range is 75-600 Pa.s, and the softening point temperature range is 100-120 ℃.
Furthermore, the polyester resin is formed by mixing one or two of hydroxyl polyester resin or carboxyl polyester resin.
Further, the polyester resin is formed by polymerizing one or more monomers of ethylene glycol, propylene glycol, neopentyl glycol, 2-methyl propylene glycol, 1, 6-hexanediol, terephthalic acid, isophthalic acid, adipic acid, sebacic acid, phthalic anhydride and trimellitic anhydride.
Furthermore, the polyester resin is hydroxyl polyester resin, the hydroxyl value range is 30-300mgKOH/g, the glass transition temperature range is 50-75 ℃, and the viscosity range is 15-200 Pa.s.
Further, the polyester resin is carboxyl polyester resin, the acid value range is 15-85mgKOH/g, the glass transition temperature range is 50-75 ℃, and the viscosity range is 15-200 Pa.s.
Further, the weight part ratio range of the acrylic resin to the acrylic resin curing agent is 95-75 parts: 5-25 parts.
Further, the weight part ratio range of the polyester resin to the polyester resin curing agent is 98-80 parts: 2-20 parts.
Furthermore, the gel time range of the acrylic powder coating is 100-600s, the flow range of the inclined plate is 15-35cm, and the softening point temperature range is 100-110 ℃.
Furthermore, the gel time range of the polyester powder coating is 150-.
Further, the hybrid thermosetting powder coating also comprises an auxiliary agent; more preferably, the weight part of the auxiliary agent accounts for 0.1-40% of the weight part of the mixed thermosetting powder coating, and the auxiliary agent is one or a mixture of more of polyamide wax, polyolefin wax, amide modified phenol urea surfactant, benzine, polydimethylsiloxane, vinyl trichlorosilane, n-butyl triethoxysilane, methyl orthosilicate, monoalkoxy pyrophosphate, acrylate, phenolic resin, urea resin, melamine formaldehyde resin, distearoyl ethylenediamine, a mixture of ethylene oxide and propylene oxide, hindered phenol, thiodipropionate diester, benzophenone, salicylate derivatives, hindered amine, alumina, fumed silica, tetrabromobisphenol A, decabromodiphenylethane, tricresyl phosphate, aluminum hydroxide, magnesium hydroxide, barium sulfate, titanium dioxide and carbon black in any proportion.
Further, the first packaging adhesive film layer adopts ethylene-vinyl acetate copolymer, polyolefin elastomer or polyvinyl butyral.
Further, still include the adhesive layer, the adhesive layer sets up between backplate and the various steel tile layer.
Further, the bonding layer is an adhesive layer or a hot-melt adhesive film layer.
Further, the back plate is transparent, white, black or other color.
Further, the laminate further comprises a second encapsulant film layer disposed between the solar cell layer and the second encapsulant material layer.
Further, the second packaging material layer is a packaging adhesive film layer.
Further, the second packaging adhesive film layer adopts ethylene-vinyl acetate copolymer, polyolefin elastomer or polyvinyl butyral.
Further, the connector and the junction box are further included; the connector is connected with the junction box and used for electrical connection in the green electricity building materials.
Through implementing the aforesaid the utility model provides a green electricity building materials based on composite packaging material has following technological effect:
(1) the utility model provides an encapsulating material can enough solve the lightweight problem of green electric building materials, can satisfy photovoltaic industry technical standard such as uvioresistant, ageing resistance, shock resistance, fire prevention again.
(2) The utility model provides a green electricity building materials through use fluoroplastics film and packaging material replaces traditional toughened glass, provides certain rigidity in order to protect solar cell for green electricity building materials, so not only can lighten the weight of green electricity building materials greatly, adapts to the installation of the solar photovoltaic power generation product of more occasions from this, but also intensity of labour when can reducing the product installation and improve the convenience of installation, reduces installation cost on the whole.
(3) The utility model provides a backplate that traditional photovoltaic module used can be replaced on green building materials layer, provides performances such as certain mechanical properties, heat-proof quality, sound insulation, waterproof, fire prevention, insulation, corrosion resistance for photovoltaic module, so can upgrade traditional photovoltaic module to novel green electricity building materials, belongs to photovoltaic building integration building materials (BIPV). Can be widely applied to the aspects of roof panels, curtain walls, outer walls, roofs and the like of industrial and civil buildings.
(4) The utility model provides a various specification and shape, colour can be made to green electric building materials, have increased the decorative of green electric building materials.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic structural view of a green electrical building material in a preferred embodiment of the present invention;
fig. 2 is a schematic structural view of a green electrical building material according to another preferred embodiment of the present invention;
FIG. 3 is a schematic structural view of a laminate in an embodiment of the invention;
FIG. 4 is a schematic view of a connector according to a preferred embodiment of the present invention;
the technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Detailed Description
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. The drawings are schematic diagrams or conceptual diagrams, and the relationship between the thickness and the width of each part, the proportional relationship between the parts and the like are not completely consistent with actual values.
At present, the most widely applied in China is photovoltaic Building Attachment (BAPV), and because a common photovoltaic module (solar cell module) used by the BAPV is packaged by toughened glass, the defects of heavy weight, high installation labor intensity, incapability of installation due to the limitation of building bearing load, difficulty in adapting to the installation requirements of different buildings and the like exist in the installation process of buildings and household roofs. In the prior art, a laminated piece of a solar cell module used in a photovoltaic Building Attachment (BAPV) is formed by laminating super-white toughened embossed glass, an EVA film, a solar cell string, an EVA film and a back plate in sequence, so that the BAPV can increase building load and influence the overall effect of a building. In addition, BAPV has the problem of repeated construction for building surfaces, which wastes building materials. The Building Integrated Photovoltaic (BIPV) is a future development trend and is a new development direction of green buildings.
Therefore the utility model provides a green electric building materials based on composite packaging material belongs to BIPV, also accords with the policy of national "green building of energetically developing".
The utility model aims at ① reducing the weight of the product, enabling the product to be installed in more occasions, ② realizing the arbitrary change of the size and the color of the product to meet the requirement of building beauty, ③ reducing the labor intensity when the product is installed and improving the convenience of installation, and reducing the installation cost on the whole.
In order to solve the problems, the packaging material is particularly light and has a better effect. The packaging material comprises a substrate and packaging paint, wherein the packaging paint is uniformly arranged on one side of the substrate; the packaging coating is a mixed thermosetting powder coating, and the raw materials of the mixed thermosetting powder coating comprise acrylic resin, an acrylic resin curing agent, polyester resin and a polyester resin curing agent; the substrate is woven from a fibrous material.
In practical implementation, the weight percentages of the components of the packaging material can be combined according to one of the following ways:
(1) 20% of a substrate and 80% of a mixed thermosetting powder coating;
(2) 25% of a substrate and 75% of a mixed thermosetting powder coating;
(3) 30% of a substrate and 70% of a mixed thermosetting powder coating;
(4) 35% of a substrate and 65% of a mixed thermosetting powder coating;
(5) 40% of a substrate and 60% of a mixed thermosetting powder coating;
it should be noted that the above only illustrates the weight percentage of the components of the encapsulating material, and those skilled in the art can configure reasonable component compositions according to the actual situation.
It should be noted that although the application of the encapsulating material in the present embodiment to the green electrical building material can achieve a better implementation effect, the field of integrating the photovoltaic and building materials is not the only application field of the encapsulating material, and those skilled in the art can also apply the encapsulating material to other suitable fields based on the characteristics of the encapsulating material.
Based on above-mentioned encapsulating material, the utility model provides a green electricity building materials structure's preferred embodiment. As shown in fig. 1, the green electrical building material includes a laminate 1, a connector 2, and a terminal block 3 for lead wires; the connector 2 is connected with the junction box 3 and is used for electrical connection in green electrical building materials.
As shown in fig. 3, the laminate 1 includes a fluoroplastic film layer 11, a first encapsulant layer 12, a first encapsulant film layer 13, a solar cell layer 14, a second encapsulant layer 15, and a back sheet 16, which are sequentially stacked.
More preferably, the laminated member 1 further includes a green building material layer disposed on the side of the back plate 16 away from the packaging material layer 15, that is, as shown in fig. 3, the green building material layer is stacked on the back plate 16, and a packaging adhesive film layer is disposed between the back plate 16 and the green building material layer. This can further enhance the insulation.
More preferably, the laminate 1 may further include an encapsulation adhesive layer between the solar cell layer 14 and the second encapsulation material layer 15, in addition to the first encapsulation adhesive layer 13.
More preferably, the second encapsulant layer 15 may be an encapsulant layer to reduce cost without reducing weather resistance and aging resistance.
It should be noted that one or more preferable combinations may be selected according to actual situations.
The utility model discloses still provide the preferred embodiment of another green electricity building materials structure. As shown in fig. 2, the green electrical building material includes: a laminating part 1, a green building material layer 4, a connector 2 and a junction box 3 for lead wires; the connector 2 is connected with the junction box 3 and is used for electrical connection in green electrical building materials; the green building material 4 and the laminated part 1 are adhered through an adhesive or a hot melt adhesive film.
As shown in fig. 3, the laminate 1 includes a fluoroplastic film layer 11, a first encapsulant layer 12, a first encapsulant film layer 13, a solar cell layer 14, a second encapsulant layer 15, and a back sheet 16, which are sequentially stacked.
More preferably, the laminate 1 may further include an encapsulation adhesive layer between the solar cell layer 14 and the second encapsulation material layer 15, in addition to the first encapsulation adhesive layer 13.
More preferably, the second encapsulant layer 15 may be an encapsulant layer to reduce cost without reducing weather resistance and aging resistance.
It should be noted that one or more preferable combinations may be selected according to actual situations. A
In the above two preferred embodiments of the green electrical building material structure, the materials used for the green building material layer, the packaging material layer and the packaging adhesive film layer and the arrangement scheme of the back plate 16 and the connector 2 need to be further specified.
The green building material layer is made of color steel tiles, and the color steel tiles have the advantages of light weight, high strength, rich color, convenient and quick construction, earthquake resistance, fire resistance, rain resistance, long service life, no maintenance and the like.
The packaging material layer adopts the packaging material, so that the problem of light weight of the green electricity building material can be solved, and the technical standards of the photovoltaic industry such as ultraviolet resistance, ageing resistance, impact resistance, fire resistance and the like can be met.
The packaging adhesive film layer adopts one or more of ethylene-vinyl acetate copolymer, polyolefin elastomer or polyvinyl butyral.
The back plate can also be transparent, white, black or other colors, and the shape of the back plate can be cut according to needs.
It should be noted that the structure of the laminate is not limited to the above-mentioned material layers (fluoroplastic film layer 11, first encapsulating material layer 12, first encapsulating adhesive film layer 13, solar cell layer 14, second encapsulating material layer 15 and back sheet 16), and more preferable schemes in the above-mentioned green electricity building material structure can be combined to prepare laminates with different hierarchical structures according to different needs, for example, in order to reduce the cost but not reduce the weather resistance and aging resistance of the laminate, the second encapsulating material layer 15 can be an encapsulating adhesive film layer; in order to further enhance the insulation, a green building material layer is laminated on the back plate 16, and a packaging adhesive film layer is further arranged between the back plate 16 and the green building material layer.
The biggest difference between the conventional photovoltaic Building Attachment (BAPV) in the prior art and the green electric building material provided by the embodiment of the utility model is that:
(1) the utility model discloses thereby the preferred embodiment has used fluoroplastics film layer and light packaging material to replace toughened glass to provide certain rigidity for green electricity building materials and has protected solar cell, so not only can lighten the weight of green electricity building materials greatly, adapts to the installation of more occasions from this, but also can reduce the intensity of labour when the product installation and improve the convenience of installation, reduces installation cost from whole.
(2) The utility model discloses green building materials have been used in preferred embodiment, so not only can provide performances such as certain mechanical properties, heat-proof quality, sound insulation, waterproof, fire prevention, insulation, corrosion resistance for green electric building materials, but also can make various specification shapes, colour with green building materials in the aspect of roof boarding, curtain, outer wall etc. of industry, civil architecture, have increased the decorative of green electric building materials.
(3) The utility model discloses in the preferred embodiment, green building materials can cut or adopt different colours as required, so can realize the arbitrary installation requirement that changes in order to adapt to different buildings of green electric building materials product size and colour.
(4) Compared with the BAPV using traditional toughened glass, the green electric building material provided by the preferred embodiment of the utility model can reduce the weight by about 50%.
(5) The connector makes the electrical connection more reliable and the cost is lower.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. The green electric building material is characterized by comprising a laminating piece, a color steel tile layer, a connector, a junction box for a lead and an adhesive layer, wherein the connector is connected with the junction box and is used for electrical connection in the green electric building material; the laminated piece comprises a back plate, and the bonding layer is arranged between the back plate and the color steel tile layer.
2. A green electrical building material according to claim 1, wherein the bonding layer is an adhesive layer or a hot-melt adhesive film layer.
3. A green electricity building material according to claim 1, wherein said laminate comprises a fluoroplastic film layer, a first encapsulating material layer, a first encapsulating adhesive layer, a solar cell layer, a second encapsulating material layer and a back sheet, which are sequentially stacked, said first and second encapsulating material layers comprise a base layer and a hybrid thermosetting powder coating, and said color steel tile layer is disposed on a side of said back sheet away from said second encapsulating material layer.
4. A green electrical building material of claim 3, wherein the laminate further comprises a second encapsulating film layer disposed between the solar cell layer and the second encapsulating material layer.
5. A green electrical building material of claim 3, wherein the second encapsulating material layer is an encapsulating adhesive layer.
6. A green electricity building material according to claim 3, wherein said hybrid thermosetting powder coating material comprises an acrylic resin, an acrylic resin curing agent, a polyester resin, and a polyester resin curing agent.
7. A green electrical building material according to claim 3, wherein the base layer has a weight per unit area in a range of 30 to 400g/m2The weight per unit area of the mixed type thermosetting powder coating on the substrate layer is 70-400g/m2。
8. A green electrical building material according to claim 1, wherein the connector is a crimp terminal and a heat shrink sleeve, the cable and cable clip at both ends being received in the crimp terminal, the heat shrink sleeve surrounding the crimp terminal.
9. A green electrical building material according to claim 3, wherein the laminate further comprises an encapsulating film layer disposed between the backing sheet and the color steel tile layer to further enhance insulation.
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