94results about How to "No light pollution" patented technology

The invention relates to a graphene / TiO2-based near-infrared / ultraviolet radiation resistant polymer composite film and a preparation method thereof, relating to a near-infrared / ultraviolet radiation resistant composite film and a preparation method thereof. The invention aims to solve the problems of the existing heat reflecting material such as poor heat insulation effect, low transparency, serious light pollution and high production cost and the like. The composite film is prepared by adding the mixed liquid of graphene oxide dispersion and nano-TiO2 dispersion in the curing system of epoxy acrylate at a volume ratio of 1-10:50. The preparation method comprises the following steps: 1) preparing graphene oxide; 2) preparing TiO2 nanoparticles; 3) preparing nanometer graphene / TiO2 composite; and 4) preparing the graphene / TiO2-based near-infrared / ultraviolet radiation resistant polymer composite film. The composite film is mainly used for the glass coating of a building or means of transport for running an air-conditioning system.

The invention discloses a gray brick mechanically manufactured from lime sludge and construction wastes and a method for manufacturing the same. The materials for mechanically manufacturing the gray brick comprise the following raw materials in portion by weight: 1,015 to 1,135 portions of construction waste crushed materials, 240 to 290 portions of cement, 810 to 1,010 portions of lime sludge, 60 to 75 portions of gray lime, and 100 to 125 portions of water, wherein the particle size of the construction waste crushed materials is less than 15 millimeters. If necessary, less than 20 portions of fly ash and proper amount of activating agent can be added to the materials. The method for mechanically manufacturing gray brick comprises the following steps: firstly, crushing the construction wastes; secondly, mixing the construction waste crushed materials with the other materials according to the proportions; and thirdly, pressing the mixture by adopting a mechanical method so as to produce the gray brick of the invention. The gray brick and the method for manufacturing the same recycle the sludge and the construction wastes in a reducing, harmless and resource-utilizing mode, and solve the problem that substituting materials and products are hard to find after clay bricks are forbidden to use and the problem of gray brick sources for civilian constructions.

The invention discloses a LED tunnel light. It includes shell and lighting module. The former includes lamp body fixed structure. The latter includes lens shade formed by lens array which formed by astigmatism convex and condense edge. The astigmatism includes light incidence and emergent planes. The lamp body fixed structure includes fixed frame and fixed plated surface. The invention can control the light distribution to make faculae form rectangle, have even illumination in effective area, little or no parasitic light out the area.

The invention discloses a preparation method of an extinction translucent blue electrophoresis aluminium profile. The preparation method comprises the following steps: carrying out anodic oxidation on the preprocessed aluminium profile, and forming an oxidation film on the surface of the aluminium profile; carrying out shading on the aluminium profile after anodic oxidation inside a coloring tank, so that coloring ions enter a film hole of the oxidation film; carrying out washing treatment on the colored aluminium profile; carrying out electrophoretic treatment on the washed aluminium profile inside a paint; forming an electrophoresis paint coating at the surface of the aluminium profile, wherein the electrophoresis paint coating is a translucent film layer; the paint comprises a gloss paint and an extinction paint; and the ratio of the gloss paint to the extinction paint is 1:4. Correspondingly, the invention also discloses the extinction translucent blue electrophoresis aluminium profile prepared by adopting the method. By adopting the preparation method, the aluminium profile is unique and beautiful in color, and does not generate light pollution.

The invention provides a thermal-insulating heat-preserving laminated safety glass and a manufacturing method thereof. The structure of the thermal-insulating heat-preserving laminated safety glass comprises, from top to bottom, a first glass layer, a transparent thermal-insulating coating the inner surface of the first glass layer, a polymer film and a second glass layer; or the thermal-insulating heat-preserving laminated safety glass is further provided with a gas spacing layer and a third glass layer. The manufacturing method comprises the following steps: (1) preparing the transparent thermal-insulating coating; and (2) preparing the thermal-insulating heat-preserving laminated safety glass; or preparing a thermal-insulating heat-preserving laminated safe hollow glass from the thermal-insulating heat-preserving laminated safety glass. The thermal-insulating heat-preserving laminated safety glass or thermal-insulating heat-preserving laminated safe hollow glass has good impact resistance, low shading coefficient, low thermal coefficient, low ultraviolet transmittance, high visible transmittance and low near-infrared transmittance and is capable of preventing radiant heat of the sun entering a room in summer so as to realize thermal insulation and capable of reducing indoor heat loss in winter so as to realize heat preservation.

The invention relates to the technical field of building materials, in particular to a fluorocarbon spray coating and etching aluminum veneer and a preparation process of the fluorocarbon spray coating and etching aluminum veneer. The fluorocarbon spray coating and etching aluminum veneer provided by the invention comprises an aluminum alloy panel with etching patterns at the outer side, wherein the outer side of the aluminum alloy panel is sequentially and outwards provided with a chromizing pretreatment layer and a fluorocarbon coating, the inner side of the aluminum alloy panel is provided with a chromizing protection layer, and the fluorocarbon ceramic coating is further arranged on the chromizing pretreatment layer, so the protection effect is realized on the surface of the aluminum alloy panel, and the adhesive force is strong, so the fluorocarbon coating is firmly attached and cannot easily fall off. The fluorocarbon spray coating and etching aluminum veneer has the characteristics that the light pollution is avoided, the self cleaning performance is high, the daily maintenance is convenient, the color is rich and cannot fade. The manufacture process of the fluorocarbon spray coating and etching aluminum veneer is reliable and is easy to implement, so the adhesive force, the acid resistance, the solvent resistance, the wear resistance, the impact resistance and the mechanical performance of the finished product fluorocarbon spray coating and etching aluminum veneer are good.

The invention relates to the technical field of films and particularly relates to a high-thermal-conductivity and high-electrical-conductivity graphene film and a preparation process thereof. The film is prepared by modifying graphene and nano diamond and is 0.5-500 microns thick, wherein the weight ratio of graphene to nano diamond is (1-10):1. According to the high-thermal-conductivity and high-electrical-conductivity graphene film of the invention, by modifying graphene and nano diamond, the thermal conductivity and the electrical conductivity of the film are greatly enhanced, and the film is enabled to have the characteristics of being resistant to near infrared / ultraviolet radiation, lower in reflectivity, high in transparency and the like. In addition, the adhesion force between the film and a substrate is improved, the adhesion strength is improved, and the film has good corrosion resistance.

The invention relates to the field of mica material processing, in particular to mica electro-thermal film. The mica electro-thermal film is in a composite multilayer structure, the middle layer is a heating element, and two sides attached to the heating element are mica substrates. The heating element is an alloy foil sheet with a heating circuit etched, the mica substrates are mica laminated paper, and the electro-thermal film is formed by pressing the alloy foil sheet and the mica substrates through high-temperature adhesives and a high temperature pressing process. The mica electro-thermal film is simple in structure and high in thermal conversion efficiency; and heating equipment produced through the mica electro-thermal film meets utilization requirements of being safe and comfortable and environment friendly and energy saving.

The invention discloses a laser remote wireless charging device based on visible indication light protection. The device forms a solar cell panel by adopting a plurality of photocell panels through serial connection and parallel connection, and thus the phenomenon that the current is limited by photocells with minimum photo-generated current when only the series-connected photocell panels are under non-uniform illumination, and energy loss and 'heat spots' are caused can be solved. By adopting a laser beam adjuster, laser beam divergence angles output by a laser can be optimized and the uniformity of the output laser energy can be increased; and the beam density and wavelengths of a semiconductor laser transmitter or a diode-pumped solid laser transmitter which is adopted are respectively matched with the energy gap width of the photocell panels which are made of GaAs or InGaAs materials, and thus the characteristics of high photoelectric conversion efficiency and low heat loss can be achieved. The device disclosed by the invention is high in charging efficiency, low in energy loss and fast in charging speed, and cannot be limited by the distance; the overall dimension of charging devices is small, and in addition, the optical wave in non-visible bands is adopted as an energy transfer form, and thus the light pollution and the interference to communication signals cannot be generated.

The invention relates to the technical field of thermal insulation materials, in particular to an infrared adjustment intelligent thermal insulation EVA film and a preparation method thereof. Modified powder with vanadium dioxide vanadium dioxide being a base body is doped with a proper quantity of other metal elements, a proper number of other additives are used in cooperation, the phase transition temperature of vanadium dioxide in the prepared EVA film is lowered to 36 DEG C or lower, reversible mutation happens to optical transmission performance in an infrared light area, and therefore the near infrared ray transmittance of the EVA film can be intelligently adjusted. When the temperature is higher than 36 DEG C, the infrared blocking rate is controlled to be 90% or higher; when the temperature is lower than 36 DEG C, the infrared blocking rate is controlled to be 50% or lower; meanwhile, it is guaranteed that the visible light transmittance is high, the light reflectance is low, and the phenomenon that traditional LOW-E glass is prone to light pollution does not exist. The EVA film prepared through the preparation method is used for manufacturing EVA interlayer glass and is applied to glass curtain walls or windows, the purpose that the environment is warm in winter and cool in summer can be achieved better, and the infrared adjustment intelligent thermal insulation EVA film is particularly suitable for the northern area in China.

The invention provides an intelligent plant cultivation device. The intelligent plant cultivation device comprises a cabinet, an intelligent control system, an LED manual light supplementing system, an environment control system and a full-automatic cultivation system, wherein the intelligent control system, the LED manual light supplementing system, the environment control system and the full-automatic cultivation system are arranged in the cabinet. The intelligent control system analyzes, regulates and controls data fed back in real time by the LED manual light supplementing system, the environment control system and the full-automatic cultivation system. The intelligent plant cultivation device has the advantages that influence from external climatic factors can be avoided, plants can grow without pesticides or pollution or public hazards, land, labor and time cost are saved, the healthy life idea of environmental protection and recycling in the modern is met, the intelligent control system achieves the optimal state of the plant growth environment, and safety and high efficiency are achieved; the LED manual light supplementing system is adjustable and controllable, light pollution is avoided, and the intelligent plant cultivation device beautifies the environment and is environmentally friendly.

The invention relates to a photovoltaic photo-thermal coupling heliostat mirror face structure with the adjustable reflection area and a heliostat. The mirror face structure comprises a driving motor,a mirror face driving wheel, a mirror face driven wheel, a mirror face transmission belt, a flexible reflecting surface and a flexible photovoltaic panel. The mirror face driving wheel is in driven connection with the driving motor, and the flexible reflecting surface and the flexible photovoltaic panel are attached to the outer surface of the mirror face transmission belt. According to the photovoltaic photo-thermal coupling heliostat mirror face structure, the proportion of the flexible reflecting surface to the flexible photovoltaic panel on the upper surface of the heliostat is adjusted through driving of the mirror face driving wheel so that the reflection area of the heliostat can be adjusted, the reflection areas of all heliostats can be dynamically adjusted in real time at different stages of the mirror field operation according to the mirror field energy requirement, and a part outside a reflector of the mirror face of the heliostat is used for conducting photovoltaic power generation. The heliostat mirror face with the structure is adopted, the requirement for mirror field energy scheduling can be met quickly and efficiently, the problem of abandoned light in the mirrorfield can be fundamentally solved, the photoelectric conversion efficiency of a power station is improved, and then the economic benefits of the power station are improved.

The invention discloses an anti-seismic wall material and a method for preparing the same. The anti-seismic wall material in a formula comprises, by weight, 5-30 parts of cement, 5-20 parts of lime, 50-70 parts of fly ash, 0.5-5 parts of gypsum, 5-25 parts of regenerated rubber powder and an appropriate amount of water. The method includes digesting the lime; weighing the components, pouring raw materials into a stirrer, stirring the raw materials under a dry condition for 2 minutes, then adding the appropriate amount of water into the stirrer and stirring the raw materials again for 3-5 minutes to obtain mixtures; pouring the stirred mixtures into brick molds or building block molds and vibrating and molding the stirred mixtures for 1-2 minutes; maintaining the mixtures for a day at the temperature of 20-30 DEG C under the condition of humidity higher than 50%, or delaying curing of the mixtures for 1 hour, then maintaining the mixtures in wet steam at the temperature of approximately 90 DEG C for 6-8 hours, and removing the mixtures from the molds to obtain bricks or building blocks; maintaining the bricks or the building blocks in high-temperature and high-pressure saturated steam at the temperature of 150-180 DEG C for 7-12 hours to obtain finished products. The anti-seismic wall material has the advantages of light weight, low elastic modulus, good elasticity, excellent toughness and ductility, high ratio of bending-compressive strength, heat insulation and the like.

The invention relates to a preparation method of a superhydrophobic nano thermal-insulation paint, belonging to the technical field of a preparation method of a paint. The preparation method comprises the following steps: a) preparation of base material: preparing a monomer solution by using 2-hydroxyethyl acrylate (HPA) as a monomer, ethylene glycol dimethyl acrylate (EGD) as a crosslinking agent, dibenzoyl peroxide (BPO) as an initiator and ethanol as a solvent; adding a sodium dodecyl benzene sulfonate activating agent and an OP-10 emulsifier into ethanol to form an assistant solution; gradually and dropwisely adding the monomer solution into the assistant solution; b) preparation of nano ATO (antimony tin oxide) powder with the particle size of 40-70nm; and c) mixing to prepare the paint. The paint does not use any toxic compound containing fluorine, silicon or the like, and thus, is healthy and environment-friendly. The paint has superhydrophobicity, the surface contact angle can reach 151 degrees, and thus, the paint has certain actions in the aspects of water-oil separation, bacterial growth inhibition and the like.

The invention provides a grey tile and a firing process thereof, and relates to the technical field of building materials. The grey tile is made of the following raw materials: shale powder, lime powder, fly ash, caesious peat meal, black powder, and furnace slag. The grey tile has good corrosion resistance, durability and erosion resistance, has freezing resistance and impermeability, discoloration and peeling prevention, no radiation, aging resistance and no light pollution, has high compressive strength and strong disassembly resistance, and is relatively beautiful.

The invention relates to an aluminum profile and provides a production method of an aluminum profile which has uniform and fine surface sand holes, achieves a good heat-insulating effect and produces no light pollution. The production method comprises fusion casting, extruding and coloring and is characterized in that the fusion casting comprises batching, fusion and casting; raw materials used in batching include aluminium, magnesium and silicone which are mixed at the weight ratio of 1:(0.3-0.5):(0.5-0.8); the raw material aluminium is derived from treated and recycled aluminum profiles; deoiling treatment and impregnating treatment are performed before coloring treatment; the impregnating treatment process is that a deoiled aluminum profile workpiece is placed in an impregnating tank, in which ammonium chloride, ammonium bifluoride, sodium fluoride, potassium permanganate and water are added at the weight ratio of (5-8):(10-14):(25-28):(12-15):balancing amount.

The invention provides a wire drawing belt, a method for manufacturing a metallic glass plate by using the wire drawing belt and the metallic glass plate. The wire drawing belt comprises a substrate material and an abrasive material; the substrate material is a non-woven fabric, the abrasive material is aluminium oxide or silicon carbide, and the grain size of the abrasive material is 50-600 meshes; and the abrasive material adheres to the substrate material. The method for manufacturing the metallic glass plate by using the wire drawing belt comprises the following steps: selecting transparent glass as a glass substrate; successively drawing long wires and broken wires on the surface of the glass substrate by using the wire drawing belt to obtain a wire drawing layer; printing brighteninggloss oil resin on the surface of the precisely treated wire drawing layer, and then sintering to obtain a wire drawing brightening layer; and printing protecting coloring resin on the surface of thewire drawing brightening layer, and then sintering to obtain the metallic glass plate. The metallic glass plate is manufactured by the method. The wire drawing belt and the metallic glass plate obtained by the method for manufacturing the metallic glass plate are suitable in color and good in surface wire drawing effect, and are attractive.

The invention relates to the technical field of ventilation cabinet illumination lamps, in particular to a laboratory ventilation cabinet LED illumination lamp set. The illumination lamp set comprisesa background lamp, a front pillar lamp, a top lamp and a power supply system, wherein an intelligent switch is arranged between the front pillar lamp and the power supply system, an intelligent switch is arranged between the top lamp and the power supply system, infrared transmitters are arranged at two sides of the lower end of a ventilation cabinet body, infrared receivers are arranged at two sides of the lower end of a sliding door, and the intelligent switches, the infrared transmitters and the infrared receivers are electrically connected with a single-chip microcomputer respectively. According to the illumination lamp set, when the infrared receivers receive signals sent by the infrared transmitters, the single-chip microcomputer receives the signals sent by the infrared receivers and controls the corresponding induction switches to turn off the front pillar lamp and the top lamp; in an experiment state, the illumination lamp set cannot perform perpendicular incidence towards the outer side of the cabinet body, so that both eyes of an experimenter are effectively protected, and the situation that light pollution influences observation of an experiment process by the experimenter is avoided; and in a non-experimenter state, only the background lamp in the illumination lamp set works, so that energy is saved.

The invention belongs to the technical field of high-performance optical materials, and discloses a high-performance PC optical material that filters biological blue light and is halogen-free and flame-retardant, as well as its preparation method and its application in the fields of new energy, lighting, protective equipment, decoration, and building materials. application. The material contains the following components in weight percent: 70-90% of polycarbonate, 1-21% of functional resin; 0.01-10% of rare earth luminescent material; 0.1-20% of flame retardant; 0.1-10% of auxiliary flame retardant; 0.01-10% of polymer-wrapped inorganic matter; 0.8-5% of lubricant; 0.3-1% of light stabilizer; 0.3-1% of antioxidant; 0.1-3% of acid inhibitor. It not only has excellent mechanical properties and flame retardant properties, but also has the characteristics of anti-glare, anti-glare, no light pollution, no light damage, and its flame resistance is as high as 5VA; it realizes full concealment of LED lamp beads, and biological blue light filtering, absorption, and shielding are as high as 98%.

The invention relates to a safety helmet with reflecting strip plates. The safety helmet comprises a safety helmet body, wherein a left front side reflecting strip plate is fixedly arranged at the left front side of the safety helmet body; a right front side reflecting strip plate is fixedly arranged at the right front side of the safety helmet body; a top reflecting strip plate in the forward and backward direction is fixedly arranged on the top right above the safety helmet body; a right back side reflecting strip plate is fixedly arranged at the right back side of the safety helmet body; a left back side reflecting strip plate is fixedly arranged at the left back side of the safety helmet body. The safety helmet has the advantages that through the reflecting strip plates arranged in each direction on the safety helmet body, operators can be favorably discovered; the safety warning effect is achieved; meanwhile, light pollution cannot be caused on the ambient environment; better safety guarantee is provided for the operators of an electric power system.

The invention provides a mine tailing synthesized wood pattern wall decoration material and a preparation method thereof. The mine tailing synthesized wood pattern wall decoration material is characterized by being prepared from the following substances in parts by weight: 0.1 part of sodium silicate, 0.018 part of sodium fluosilicate, 0.009 part of urea, 0.01 part of dimethyl siloxane, 0.06 partof caustic soda and 0.857 part of main aggregate powder. The material synthesized by using the preparation method has natural properties, is free of harmful substance or element to bodies and particularly stable in physical and chemical property, and is a high-class decoration material with heat preservation, thermal insulation and no radiation.

The invention discloses an indoor automatic laser charging system and method. The indoor automatic laser charging system is characterized by comprising a fixed base, a Z-axis motor, a movable support, an X-axis motor, a laser emitter, a driving circuit and a plurality of groups of Bluetooth antennas, wherein the Z-axis motor is arranged on the fixed base, the movable support is arranged on the fixed base and connected with an output shaft of the Z-axis motor, the X-axis motor is arranged on the movable support, the laser emitter is arranged on the movable support and connected with an output shaft of the X-axis motor, the Bluetooth antennas are electrically connected with the driving circuit, the driving circuit comprises a master control module and a Bluetooth module, the Bluetooth module is electrically connected with the master control module and electrically connected with the plurality of Bluetooth antennas, the master control module is electrically connected with the X-axis motor, the Z-axis motor and the laser emitter respectively, the movable support rotates in a horizontal direction under the driving of the Z-axis motor, and the laser emitter rotates in a vertical direction under the driving of the X-axis motor.

The invention discloses a high-power carbon fiber electric heating plate, a production process and an application device. The high-power carbon fiber electric heating plate comprises a plurality of layers, namely a benzoxazine resin insulation layer I, carbon paper and a benzoxazine resin insulation layer II which are sequentially arranged from top to bottom, wherein the middle layer of carbon paper is encapsulated up and down by the benzoxazine resin insulation layer I and the benzoxazine resin insulation layer II; a conductive material in contact with the carbon paper is also encapsulated between the carbon paper and the benzoxazine resin insulation layer I and / or between the carbon paper and the benzoxazine resin insulation layer II; the conductive material is used as an electrode and is connected with a power supply by virtue of a lead; the benzoxazine resin insulation layer I and the benzoxazine resin insulation layer II respectively comprise cured benzoxazine resin or cured and modified benzoxazine resin; glass cloth is used as a resin reinforcing material. According to the high-power carbon fiber electric heating plate, epoxy resin is replaced by the benzoxazine resin and the modified resin of the benzoxazine resin, so that the carbon fiber electric heating plate with high-heat-resistance upper and lower insulation layers and development power reaching 1100-1500w is obtained.

The invention relates to the technical field of road anti-fog, in particular to a fog lamp and a method for improving driving safety in foggy areas. The fog lamp used in the method at least includes a lamp body (100) having a light-emitting surface (110) and a reflective surface (120). ) towards the front of the vehicle, and the reflective surface (120) towards the rear of the vehicle. By setting the fog lamps through the method of the invention, the blind area is small and the anti-fog effect is good.

The invention discloses a double glass solar photoelectric curtain wall. The Double glass solar photoelectric curtain wall includes double glass solar assembly covered edges, a high strength anti-skidtempered glass layer, a LED point light source, a photovoltaic silicon slice and a photovoltaic and signal connecting line. The double glass solar assembly covered edges are fixedly arranged at the four corners of a double glass photovoltaic plate. The high strength anti-skid tempered glass layer is arranged on the outside of the double glass photovoltaic plate. The LED point light source, the photovoltaic silicon slice and the photovoltaic and signal connecting line are arranged in the double glass photovoltaic plate. The double glass solar photoelectric curtain wall can generate electricityby solar energy in the daytime and brighten wall surfaces and buildings at night, and has light weight, high rigidity and intensity, and good weather resistance and decay resistance; the double glasssolar photoelectric curtain wall further has no light pollution, and is easy to install and construct and convenient to clean and maintain; the signal interface is DXM512, the double glass solar photoelectric curtain wall further can be compatible with other brightening products, has stable product physical property, superior environmental protection and fireproof performance; and the double glass solar photoelectric curtain wall has good earthquake resistance and wind proof capacity, scientific and reasonable structure, and the use is safe and convenient.

The invention provides a low-position lamp and application thereof in roadway illumination. The low-position lamp is suitable for being installed on the two sides of a roadway and is used for night illumination, the color temperature of the low-position lamp ranges from 3,000 K to 4,000 K, the color rendering index of the low-position lamp is larger than or equal to 70, and the luminance of the low-position lamp is larger than or equal to 0.5 cd / m<2>; when the low-position lamp is installed on the two sides of the roadway, the vertical height of the low-position lamp from the ground ranges from 0.6 m to 1.2 m. When the low-position lamp is installed on guard bars arranged on the two sides of the roadway, illumination is uniform, no glaring or flickering is generated, the illumination light effect is high, the life is long, a driver achieves the high driving comfort under irradiation of the light source, visual cognition is quick and accurate, and the safety is high.

The invention discloses a beam connection structure of a assembly type concrete frame. The beam connection structure comprises a left pre-embedded section, a connecting section and a right pre-embedded section; the left pre-embedded section, the connecting section and the right pre-embedded section are all box type section steel components; the left pre-embedded section and the right pre-embedded section are both embedded in a reinforced concrete frame beam previously and become a part of concrete beam sections through concrete pouring and hardening; and during construction, the concrete beam sections are connected through the connecting section of the beam connection structure, so that the structure becomes a whole. The connecting section is designed according to the needs that the concrete frame beam forms a plastic hinge, and the carrying capacity is adjusted by a section dimension, so that the connecting section is in an elastic working condition in normal use; and when an extraordinary event occurs, the connecting section yields first and develops plastic deformation reliably. According to the beam connection structure of the assembly type concrete frame, construction is simple, when the extraordinary event occurs, the beam connection structure forms the plastic hinge to protect the other parts of the component from being damaged; and after the extraordinary event, the connection section with severe deformation can be replaced, and an excellent structural performance is achieved.

The invention discloses an intelligent glass system with an efficient one-way light and heat transfer function. The intelligent glass system comprises a sunlight efficient absorption functional layer,a blackbody radiation high-reflection functional layer arranged on one side of the sunlight efficient absorption functional layer, and one or more sunlight transmission layers arranged on the side, opposite to the sunlight efficient absorption functional layer, of the blackbody radiation high reflection functional layer.The area between the blackbody radiation high reflection functional layer andthesunlight transmission layers as well as the area between two adjacent sunlight transmission layers when the sunlight transmission layers are multiple areairtight hollow or vacuum heat convection suppression layers.

The invention discloses a production technique of a simulated grey brick. The simulated grey brick is composed of an upper layer and a lower layer, wherein the lower layer is prepared by mixing and pressing cement, sand, black powder and water; and the upper layer is prepared by mixing and pressing cement, sand, rock powder and water. The production technique comprises the following steps: filling a mixture of cement, sand, black powder and water into a mold, and forming the lower layer of the simulated grey brick in a layer-by-layer wet pressing mode in batches; filling a mixture of cement, sand, rock powder and water into the lower layer, and forming the upper layer of the simulated grey brick in a layer-by-layer wet pressing mode in batches; demolding, and curing in a steam drying chamber for 24 hours; and finally, naturally curing in a place. The technique uses local materials, and utilizes the rock powder instead of the black powder, thereby better utilizing the waste materials, lowering the production cost, reducing the damage to the environment, and enhancing the competitive power of the product.