Self-insulation lattice decorative integrated greenhouse component with polyurea protective layer

Abstract

The application discloses a self-thermal-insulation lattice decoration integrated greenhouse component with a polyurea protective layer and belongs to the technical field of greenhouses. The self-thermal-insulation lattice decoration integrated greenhouse component with a polyurea protective layer comprises a lattice frame (1), an integrated thermal-insulation body (2) and a spraying type polyurea protective coating elastomer, the integrated thermal-insulation body (2) is arranged in the lattice frame (1), and the spraying type polyurea protective coating elastomer is coated on the surfaces of the lattice frame (1) and the integrated thermal-insulation body (2). The application has the advantages of rapid and simple on-site construction, high construction efficiency, short maintenance period of materials, and the like. The application is hot sprayed or cast, the one-time construction thickness range can be from hundreds of micrometers to several centimeters, the drawbacks of previous multiple constructions are overcome, and the application is favorable for improving work efficiency. The application reduces working procedures and labor quantity and improves the impact resistance of the integrated thermal-insulation body. The application makes the component realize structure, thermal insulation and decoration integration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of greenhouse components, in particular to a self-insulation lattice decoration integrated greenhouse component with a polyurea protective layer. BACKGROUND

[0002] A greenhouse uses light-transmitting covering materials as all or part of the enclosure structure, and has certain environmental control equipment, which is used to resist adverse weather conditions and ensure normal growth and development of crops. The greenhouse uses solar energy as the main light and heat energy, and has a front roof, a rear roof, a north wall, and east and west gables as main structures. The front roof transmits sunlight during the day and needs to be covered with thermal insulation covering at night, the rear roof is always thermally insulated, and the north wall and the east and west gables have thermal insulation and heat storage functions. The greenhouse is mainly used for agricultural production, and the heat required for warming and the light required for photosynthesis almost all come from sunlight, so people try every means to improve the lighting, thermal insulation, and heat storage performance of the greenhouse. The measures include: improving the shed surface angle, using thin films with high light transmittance, improving the orientation of the greenhouse, thickening the wall, improving the structure and angle of the rear slope, scrubbing the shed film, increasing the space inside the greenhouse, using thick thermal insulation materials, using roller shutter machines to quickly open and close the curtain, and reducing the shading area of bamboo poles and steel wires. Even so, the existing greenhouse is difficult to resist adverse environmental conditions of low temperature and weak light.

[0003] For the self-insulation lattice decoration integrated detachable assembly type sunlight greenhouse appearing on the market at present, its structure, thermal insulation, and decoration integration means that all the components except the concrete independent foundation and the front roof framework are lattice, and the side fixed decorative plate is exposed after assembly, so that a sandwich or cavity is formed, and the corrosion protection technology of the lattice framework usually adopts hot dip galvanizing, painting, electrostatic spraying, and plastic dipping processes. This type of sunlight greenhouse has the following shortcomings: 1. The inlaid decorative plate needs to reserve an installation groove in the lattice framework, drill holes, tap screws, and fix with screws, resulting in multiple processes, large labor intensity, and inconvenient installation. 2. Its waterproof performance is achieved by sealing the joints with sealant, resulting in multiple processes and large labor intensity. 1. When the lattice framework adopts hot dip galvanizing corrosion protection, the pickling, immersion plating agent, drying preheating, and hot dip galvanizing processes all need to be heated to different degrees, so the energy consumption is high, and the water consumption is large, the pollution is serious, and the environmental pollution is serious. 4. When the lattice framework adopts electrostatic spraying process for corrosion protection, the curing temperature is generally 185℃, and the time is 15 minutes, so the energy consumption is relatively high. 5. When the lattice framework adopts hot dip plastic process for corrosion protection, the workpiece needs to be heated, the pre-drying temperature is 151±51℃, and the time is about 15 minutes; the curing temperature is 181-211℃, and the time is about 11 minutes, resulting in relatively high energy consumption. 6. The corrosion protection layer of hot dip galvanizing, painting, and electrostatic spraying is thin, the thermal conductivity coefficient is large, the thermal resistance is small, and the thermal bridge effect is large. 7. The corrosion protection layer of hot dip galvanizing, electrostatic spraying, and hot dip plastic is not easy to recoat, and it is not easy to repair after being damaged. SUMMARY

[0004] The present application aims to provide a self-insulation lattice decoration integrated greenhouse component with polyurea protective layer, thereby solving the problems in the background art.

[0005] The technical solution adopted by the present application is as follows:

[0006] The self-insulation lattice decoration integrated greenhouse component with polyurea protective layer comprises a lattice skeleton 1, an integrated insulation body 2 and a sprayed polyurea protective coating elastomer, the integrated insulation body 2 is arranged in the lattice skeleton 1, and the sprayed polyurea protective coating elastomer is coated on the surface of the lattice skeleton 1 and the integrated insulation body 2.

[0007] Further, the material of the integrated insulation body 2 is foamed polystyrene, and the integrated insulation body 2 is integrally molded with the lattice skeleton 1 coated with the sprayed polyurea protective coating elastomer.

[0008] Further, the integrated insulation body 2 comprises a plurality of insulation foam plates, the plurality of insulation foam plates are densely filled into the abdominal space of the lattice skeleton 1 coated with the sprayed polyurea protective coating elastomer, and the adjacent two insulation foam plates are bonded together by using a polyurea primer layer.

[0009] Further, the sprayed polyurea protective coating elastomer comprises a polyurea primer layer, a sprayed polyurea coating layer from inside to outside.

[0010] Further, the sprayed polyurea protective coating elastomer further comprises a polyurea topcoat layer arranged on the sprayed polyurea coating layer, and an interface treatment agent is used between the adjacent two coating layers.

[0011] Further, the polyurea primer layer adopts an epoxy resin system primer or a polyurethane system primer, when the epoxy resin system primer is adopted, a low-viscosity epoxy resin and a low-volatility and normal-temperature curing agent system are specifically selected, when the polyurethane system primer is adopted, a low-volatility isocyanate and a normal-temperature curing agent system are specifically selected, and the dry film thickness of the polyurea primer layer is 11-15 1 m.

[0012] Further, the sprayed polyurea coating layer is formed by mixing and reacting the A component composed of isocyanate prepolymer and the B component composed of amino-terminated, hydrocarbon-terminated and amino compounds in a volume ratio of 1:1 through a spraying device, and the thickness of the sprayed polyurea coating layer is not less than 1.1 mm.

[0013] Further, the polyurea topcoat layer is an elastic coating layer, the raw material thereof is selected from aliphatic polyurethane coating or acrylic polyurethane coating, and the thickness of the polyurea topcoat layer is greater than 11 m.

[0014] The spraying method of the sprayed polyurea coating comprises the following steps: spraying one layer of polyurea primer and one layer of sprayed polyurea coating on the lattice frame 1 buried underground, the thickness of the sprayed polyurea coating is greater than or equal to 1.1 mm, the polyurea coating at the welds and inside corners of the lattice frame 1 is thickened by 1.1-12.1 mm, and no color adjustment is performed; the lattice frame 1 on the ground is sprayed with the polyurea coating twice, the thickness of the first sprayed polyurea coating is greater than or equal to 1.1 mm, the polyurea coating at the welds and inside corners of the lattice frame 1 is thickened by 1.1-12.1 mm, the filling of the integrated heat preservation body 2 is performed after solidification, the second sprayed polyurea coating is sprayed on the outer surface of the lattice frame 1 after the filling of the integrated heat preservation body 2 and the polyurea primer of the integrated heat preservation body 2 are completed, the thickness of the second sprayed polyurea coating is 2.1-11.1 mm, and the second sprayed polyurea coating extends to the surface of the integrated heat preservation body 2 within a range of 15 mm; the thickness of the sprayed polyurea coating of the exposed side surface of the integrated heat preservation body 2 after assembly is greater than or equal to 1.1 mm; the overlapping width between adjacent sprayed construction layers is greater than 12 mm; the end surface of the polyurea layer with different thicknesses is formed into a slope with a length greater than 11 mm to prevent the end polyurea layer from peeling off or warping.

[0015] In summary, due to the adoption of the technical scheme, the present application has the following advantages:

[0016] 1. The present application does not set decorative plate mounting slots, wire holes and screws on the outside of the lattice frame, thereby reducing the working procedures and labor intensity.

[0017] 2. The present application completes sealing and waterproofing after coating the sprayed polyurea protective coating elastomer on the surface of the component, thereby reducing the working procedures and labor intensity.

[0018] 1. The present application is fast and simple in on-site construction, has high construction efficiency and short maintenance period of materials; and the once construction thickness range can be from hundreds of microns to several centimeters through thermal spraying or pouring, thereby overcoming the disadvantages of previous multiple constructions and being beneficial to improving the work efficiency.

[0019] 4. The spraying polyurea construction temperature of the present application is 61-71 DEG C, and the workpiece can be not heated, so the energy consumption is lower than that of hot dip galvanizing, electrostatic spraying and hot dip plasticizing processes.

[0020] 5. The sprayed polyurea protective coating elastomer has low thermal conductivity which is common to organic matters, and the thermal resistance of the component is increased due to the thick coating, thereby being beneficial to reducing the thermal bridge effect and improving the greenhouse heat preservation performance.

[0021] The surface of the sprayed polyurea protective coating elastomer can be recoated or manually repaired, and the construction is simple, so the sprayed polyurea protective coating elastomer has good repairability. The sprayed polyurea protective coating elastomer has excellent resistance to atmospheric and medium corrosion.

[0022] The sprayed polyurea protective coating elastomer has good thermal stability, can be used for a long time at 121 DEG C, and can withstand short-time thermal shock at 151 DEG C. The sprayed polyurea protective coating elastomer has excellent mechanical properties such as high tensile strength, high elongation at break, and high tear strength, and the elasticity and rigidity thereof are adjustable, thus improving the impact resistance of the integrated thermal insulation body.

[0023] 6. The sprayed polyurea protective coating elastomer of the present application has excellent adhesion to various substrates, and the coating is continuous, dense, and jointless, thus enabling the structure, thermal insulation, and decoration of the component to be integrated. The sprayed polyurea protective coating elastomer can be formed on the surface of a substrate of any shape, and the thick coating layer is formed without sagging in one step. The original shape is reproduced with good reproducibility, and the coating is continuous, dense, jointless, and pinhole-free, and is aesthetically pleasing, practical, and durable. The sprayed polyurea protective coating elastomer can be used to freely draw decorative patterns on a mold, and has bright colors that can be adjusted at will, thus having good decorative properties. The surface of the sprayed polyurea protective coating elastomer is dense, and has excellent waterproof properties and wear resistance, and thus has good scrub resistance. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 is a structural diagram of the present application;

[0025] Fig. 2 is a structural diagram of the sprayed polyurea protective coating elastomer of the present application;

[0026] In the drawing, 1 is a lattice-type framework, 2 is an integrated thermal insulation body, 1 is a polyurea base coating layer, 4 is a sprayed polyurea coating layer, and 5 is a polyurea top coating layer. DETAILED DESCRIPTION

[0027] In order to make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0029] EMBODIMENT

[0030] As Figs. 1-2The embodiment provides a self-thermal insulation lattice decorative integrated greenhouse component with a polyurea protective layer, which comprises a lattice frame 1, an integrated thermal insulation body 2 and a sprayed polyurea protective coating elastomer, the integrated thermal insulation body 2 is arranged in the lattice frame 1, and the sprayed polyurea protective coating elastomer is coated on surfaces of the lattice frame 1 and the integrated thermal insulation body 2. Specifically, the sprayed polyurea protective coating elastomer is coated on the side surface of the integrated thermal insulation body 2 which is exposed after assembly.

[0031] The material of the integrated thermal insulation body 2 is foamed polystyrene, and the integrated thermal insulation body 2 is integrally formed with the lattice frame 1 which has been coated with the sprayed polyurea protective coating elastomer.

[0032] The integrated thermal insulation body 2 comprises a plurality of thermal insulation foam plates, the plurality of thermal insulation foam plates are densely filled into the abdominal space of the lattice frame 1 which has been coated with the sprayed polyurea protective coating elastomer, and adjacent two thermal insulation foam plates are bonded together by using a polyurea primer layer.

[0033] The sprayed polyurea protective coating elastomer comprises a polyurea primer layer 1 and a sprayed polyurea coating layer 4 from inside to outside.

[0034] The sprayed polyurea protective coating elastomer further comprises a polyurea top coating layer 5 arranged on the sprayed polyurea coating layer, and an interface treatment agent is used between adjacent two coating layers.

[0035] The polyurea primer layer adopts an epoxy resin system primer or a polyurethane system primer, when the epoxy resin system primer is adopted, low-viscosity epoxy resin and a low-volatility and normal-temperature curing agent system are specifically selected, when the polyurethane system primer is adopted, low-volatility isocyanate and a normal-temperature curing agent system are specifically selected, and the dry film thickness of the polyurea primer layer is 11-15 1 m.

[0036] The sprayed polyurea coating layer is formed by mixing and reacting A component composed of isocyanate prepolymer and B component composed of amino-terminated, hydrocarbon-terminated and amino compounds in a volume ratio of 1:1 through a spraying device, and the thickness of the sprayed polyurea coating layer is not less than 1.1 mm.

[0037] The polyurea top coating layer is an elastic coating layer, raw materials of the polyurea top coating layer are selected from aliphatic polyurethane coating materials or acrylic polyurethane coating materials, and the thickness of the polyurea top coating layer is greater than 11 m.

[0038] The spraying method of the sprayed polyurea coating includes the following steps: the lattice skeleton 1 buried in the ground is sprayed with a polyurea base coating and a sprayed polyurea coating, the thickness of the sprayed polyurea coating is greater than or equal to 1.1 mm, the polyurea coating at the internal welds and the internal corners of the lattice skeleton 1 is thickened by 1.1-12.1 mm; and the color is not adjusted; the lattice skeleton 1 on the ground is sprayed with the polyurea coating twice, the thickness of the first sprayed polyurea coating is greater than or equal to 1.1 mm, the polyurea coating at the internal welds and the internal corners of the skeleton should be thickened by 1.1-12.1 mm, the filling of the integrated heat preservation body 2 is carried out after solidification, the second sprayed polyurea coating is carried out after the filling of the integrated heat preservation body 2 and the polyurea base coating are completed, the outer surface of the lattice skeleton 1 is recoated, the thickness is 2.1-11.1 mm, and the recoating extends to the surface of the integrated heat preservation body 2 within a range of 15 mm; the thickness of the sprayed polyurea coating of the exposed side surface of the integrated heat preservation body 2 after assembly is greater than or equal to 1.1 mm; the overlapping width between adjacent sprayed construction layers is greater than 12 mm; the end surface of the polyurea layer with different thicknesses is formed into a slope with a length greater than 1 mm to prevent the end polyurea layer from peeling or warping.

[0039] The lattice skeleton in the application is used to bear and transfer roof load. The column splices and the struts (strips) of the lattice skeleton are welded to form the chord and web of the space truss; the welds on the outer surface of the skeleton are smooth and continuous, the internal welds are circular arcs or bevels, the welds between the parts and the skeleton are circular arcs or bevels, and the hole openings are 45° chamfers.

[0040] The integrated heat preservation body in the application is used for greenhouse heat preservation. The material is selected from foamed materials with small thermal conductivity and large apparent density after forming, such as polystyrene, and is molded into one body with the lattice skeleton which has completed the first spraying of the polyurea coating; the finished heat preservation foam board can also be used, the finished heat preservation foam board is filled into the lattice skeleton which has been coated with the sprayed polyurea protective coating elastomer in a uniform and dense manner, the core block is maximized, the polyurea base coating is used to bond the heat preservation foam boards in the same lattice skeleton into one body, the surface of the lattice skeleton struts which form the lattice column and the surface of the web which form the space truss are flush with the surface of the integrated heat preservation body (except for the parts where equipment is installed), the internal corners of the surface modeling are bevels with an angle not greater than 45° or circular arc angles with a diameter greater than or equal to the modeling protruding thickness, and the external corners are circular arc angles greater than or equal to the modeling protruding thickness.

[0041] The sprayed polyurea protective coating elastomer in the application is used for corrosion prevention, water prevention, impact resistance and decoration of components. The structure is composed of a polyurea base coating and a sprayed polyurea coating or composed of a polyurea base coating, a sprayed polyurea coating and a polyurea top coating, the base layer is repaired with a repair material when uneven, and an interface treatment agent is used for recoating. The coating process is carried out according to the current national standards or industry standards; the color is selected according to the current national standards and the use requirements.

[0042] Specifically, the polyurea primer coating is a coating applied to the surface of the base layer in advance to increase the adhesion between the polyurea coating and the base layer before construction. When an epoxy resin system primer coating is used, a low viscosity epoxy resin and a low volatile, room temperature curing agent system are selected; when a polyurethane system primer coating is used, a low volatile isocyanate and a room temperature curing agent system are selected; and the dry film thickness is 11-15 1 m;

[0043] Specifically, the sprayed polyurea coating is a polyurea coating formed by mixing and rapidly reacting the A component composed of isocyanate prepolymer and the B component composed of amino-terminated, hydrocarbon-terminated and amino compounds at a volume ratio of 1:1 through a special spraying equipment. The lattice skeleton buried underground is sprayed with only one layer of polyurea primer coating and one layer of sprayed polyurea coating, the sprayed polyurea coating has a thickness of ≧1.1 mm, the polyurea coating at the welds and inside corners of the skeleton should be thickened by 1.1-12.1 mm; and there is no need for color adjustment. The lattice skeleton on the ground is sprayed with polyurea coating twice, the first time with a thickness of ≧1.1 mm, the polyurea coating at the welds and inside corners of the skeleton should be thickened by 1.1-12.1 mm, and after curing, the thermal insulation body is filled; the second time, after the thermal insulation body is filled and the polyurea primer coating is completed, the column legs constituting the lattice columns and the chord bars constituting the space truss are recoated, with a thickness of 2.1-11.1 mm, and extending to within 15 mm of the surface of the thermal insulation body. The sprayed polyurea coating on the side surface of the integrated thermal insulation body that is still exposed after assembly has a thickness of ≧1.1 mm. The areas with a surface area exceeding 1 m2 that are constructed have increased reinforcement of the lacing plates (strips) constituting the lattice columns and the web bars constituting the space truss. The areas with high impact resistance requirements (such as wall skirts, doors, etc.) have increased reinforcement of the lacing plates (strips) constituting the lattice columns and the web bars constituting the space truss, the polyurea coating is thickened by 1.5-12.1 mm, and measures are taken to increase the hardness of the polyurea elastomer. The overlap width between adjacent sprayed construction layers is greater than 12 mm; the end surfaces of polyurea layers of different thicknesses are made into slopes with a length of more than 11 mm, and the end polyurea layers are prevented from peeling off or warping.

[0044] Specifically, the polyurea top coating is a coating for improving the surface resistance of polyurea coating to ultraviolet radiation on the ground to prevent aging and discoloration, which is uniformly sprayed after each group of components is sprayed with polyurea coating. The raw materials thereof are selected from aliphatic polyurethane coatings and acrylic polyurethane coatings; the coating is an elastic coating; and the construction thickness is greater than 11 m.

[0045] Specifically, the interface treatment agent is a coating for improving the adhesion strength between the layers of the recoated polyurea coating. The repair material is a two-component polyurea hand coating for repairing quality defects of the polyurea coating.

[0046] The decoration in the application, specifically the pattern, is formed simultaneously with the integrated heat preservation body by engraving convex or concave shapes on the mold, and can also be printed on the surface of the sprayed polyurea protective coating elastomer using high-weather-resistant ink and its corresponding printing process; when different blocks in the same plane require different colors, the polyurea coating can be directly mixed, and the partition spraying process can be carried out according to the current national or industry coating standards.

Claims

1. A self-insulation latticed decorative integrated greenhouse component with polyurea protective layer, comprising a latticed framework (1), an integrated insulation body (2) and a sprayed polyurea protective coating elastomer, characterized in that, The integrated heat preservation body (2) is arranged in the lattice frame (1), and the sprayed polyurea protective coating elastomer is coated on surfaces of the lattice frame (1) and the integrated heat preservation body (2). The sprayed polyurea protective coating elastomer comprises, from inside to outside, a polyurea primer layer and a sprayed polyurea coating layer; the sprayed polyurea protective coating elastomer further comprises a polyurea topcoat layer arranged on the sprayed polyurea coating layer, and an interface treatment agent is used between adjacent two coating layers. The polyurea primer layer adopts an epoxy resin system primer or a polyurethane system primer; when the epoxy resin system primer is adopted, a low-viscosity epoxy resin and a low-volatility and normal-temperature curing agent system are selected; when the polyurethane system primer is adopted, a low-volatility isocyanate and a normal-temperature curing agent system are selected; and the dry film thickness of the polyurea primer layer is 10-35 µm. The material of the integrated heat preservation body (2) is foamed polystyrene, and the integrated heat preservation body (2) is integrally formed with the lattice frame (1) coated with the sprayed polyurea protective coating elastomer.

2. The self-insulating lattice decorative integrated greenhouse component with polyurea protective layer according to claim 1, characterized in that: The integrated heat preservation body (2) comprises a plurality of heat preservation foam plates, the plurality of heat preservation foam plates are densely filled into the abdominal space of the lattice frame (1) coated with the sprayed polyurea protective coating elastomer, and adjacent two heat preservation foam plates are bonded together by the polyurea primer layer.

3. The self-insulating lattice decorative integrated greenhouse component with polyurea protective layer according to claim 1, characterized in that: The sprayed polyurea coating layer is formed by mixing and reacting, by spraying equipment, an A component composed of an isocyanate prepolymer and a B component composed of an amino-terminated, hydrocarbon-terminated and amino compound at a volume ratio of 1:1, the sprayed polyurea coating layer has a thickness of not less than 1.0 mm.

4. The self-insulating lattice decorative integrated greenhouse component with polyurea protective layer according to claim 3, characterized in that: The polyurea topcoat layer is an elastic coating layer, raw materials of the polyurea topcoat layer are selected from aliphatic polyurethane paint or acrylic polyurethane paint, and the polyurea topcoat layer has a thickness of greater than 30 µm.

5. The self-insulating lattice decorative integrated greenhouse component with polyurea protective layer according to claim 3, characterized in that: The spraying method of the sprayed polyurea coating layer The following steps are included: the lattice frame (1) buried underground is only sprayed with one layer of polyurea primer layer and one layer of sprayed polyurea coating layer, the sprayed polyurea coating layer has a thickness of ≧1.0 mm, the polyurea coating layer at the internal weld and the internal corner of the lattice frame (1) is thickened by 1.0-2.0 mm; and no color adjustment is performed; the lattice frame (1) on the ground is sprayed with the polyurea coating layer twice, the first time, the polyurea coating layer has a thickness of ≧1.0 mm, the polyurea coating layer at the internal weld and the internal corner of the lattice frame should be thickened by 1.0-2.0 mm, after curing, the filling of the integrated heat preservation body (2) is performed, the second time, the polyurea coating layer is sprayed on the outer surface of the lattice frame (1) after the filling of the integrated heat preservation body (2) and the polyurea primer layer thereof are completed, the thickness of the polyurea coating layer is 2.0-3.0 mm, and the polyurea coating layer extends to a range of 150 mm on the surface of the integrated heat preservation body (2); the sprayed polyurea coating layer on the side surface of the integrated heat preservation body (2) exposed after assembly has a thickness of ≧1.0 mm; the overlapping width between adjacent sprayed construction layers is greater than 120 mm; the end surface of the polyurea layer with different thicknesses is formed into a slope with a length greater than 10 mm, so as to prevent the end polyurea layer from peeling or warping.

Images