A thermal insulation board with composite reflective thermal insulation coating and its external wall thermal insulation system

Abstract

The present application relates to the field of exterior wall insulation systems, and specifically discloses an insulation board of a composite reflective thermal insulation coating and an exterior wall insulation system thereof. An insulation board of a composite reflective thermal insulation coating comprises an insulation board, a protective layer coated on the side of the insulation board, an alkali-resistant primer layer coated on the surface of the protective layer, and a composite reflective thermal insulation coating layer coated on the surface of the alkali-resistant primer layer; the protective layer is composed of an anti-cracking putty and a composite alkali-resistant mesh cloth, and the composite reflective thermal insulation coating layer comprises a primer layer, an insulation middle coating layer and a finishing layer, and the insulation middle coating layer comprises a lightweight functional material, and the lightweight functional material is composed of aerogel and glass microbeads in a mass ratio of (15‑20):(35‑45). The insulation board of the composite reflective thermal insulation coating of the present application can be used for an exterior wall insulation system, and has the advantages of good insulation and heat insulation performance.

Description

Technical Field

[0001] The present application relates to the technical field of exterior wall insulation, and more specifically, to an insulation board with a composite reflective thermal insulation coating and an exterior wall insulation system thereof. Background Art

[0002] The external wall insulation system originated in Europe in the 1960s. After decades of continuous development and research, its technology has been quite perfect. The main principle of the external wall insulation system is to place insulation materials on the outside of the building's exterior wall and use the entire system to insulate the building. It has the advantages of preventing condensation on the wall, protecting the main structure, and extending the life of the building.

[0003] A Chinese patent with application announcement number CN105672502A discloses a thermosetting fireproof insulation board exterior wall insulation system, including a wall and a finishing layer, and also including a mortar layer, a thermosetting fireproof insulation board and a galvanized steel wire mesh. The mortar layer is applied to the outside of the wall, and the mortar layer serves as a fixed foundation. The thermosetting fireproof insulation board is fixed to the outer surface of the mortar layer by mixing and stirring evenly mortar. The outer surface of the thermosetting fireproof insulation board is bonded with a galvanized steel wire mesh, and the galvanized steel wire mesh is reinforced by short anchor bolts. A fixing layer is brushed on the outer surface of the galvanized steel wire mesh, and the fixing layer is a thin layer of mortar. A waterproof putty layer is applied on the outer surface of the fixing layer, and the outer surface of the waterproof putty layer is a finishing layer.

[0004] With respect to the above-mentioned thermosetting fireproof insulation board exterior wall insulation system, the inventor believes that its thermal insulation and heat insulating performance is relatively poor. Summary of the invention

[0005] In order to improve the thermal insulation and heat insulating performance of an exterior wall thermal insulation system, the present application provides an insulation board with a composite reflective thermal insulation coating and an exterior wall thermal insulation system thereof.

[0006] In the first aspect, the present application provides an insulation board with a composite reflective thermal insulation coating, which adopts the following technical solution:

[0007] A thermal insulation board with a composite reflective thermal insulation coating comprises a thermal insulation board, a protective layer coated on the side of the thermal insulation board, an alkali-resistant primer layer coated on the surface of the protective layer, and a composite reflective thermal insulation coating layer coated on the surface of the alkali-resistant primer layer; the protective layer is composed of an anti-cracking putty and a composite alkali-resistant mesh cloth, the composite reflective thermal insulation coating layer comprises a primer layer, a thermal insulation middle coating layer and a finishing layer, the thermal insulation middle coating layer comprises a lightweight functional material, and the lightweight functional material is composed of aerogel and glass microbeads in a mass ratio of (15-20):(35-45).

[0008] By adopting the above technical scheme, the anti-cracking putty and composite alkali-resistant mesh coated on the outer surface of the insulation board can block heat and reduce heat transfer, and play a synergistic role with the insulation board to improve its thermal insulation performance; in addition, the alkali-resistant primer can reduce the erosion of the insulation board by the external environment and extend its service life; the aerogel and glass beads in the insulation middle coating have a smaller thermal conductivity and better fire retardant effect, which can isolate external heat and improve the thermal insulation and heat insulation performance of the insulation board. The finishing layer reflects external heat radiation and sunlight to reduce the degree of heat accumulation on the surface of the insulation board. The insulation middle coating and the finishing layer play a synergistic role in compounding, which greatly improves the thermal insulation and heat insulation performance of the insulation board.

[0009] Preferably, the thermal insulation middle coating is mainly composed of the following raw materials in parts by weight: 35-60 parts of lightweight functional materials, 25-40 parts of high molecular polymers, and 1-3 parts of additives; the high molecular polymers include acrylic emulsions, and the additives include film-forming aids, preservatives, defoamers, dispersants, and wetting agents.

[0010] By adopting the above technical scheme, aerogel and glass microbeads are added to the thermal insulation middle coating, the acrylic emulsion can form a three-dimensional network structure in the thermal insulation middle coating, and the aerogel and glass microbeads are encapsulated in the three-dimensional network structure, and the additive can improve the dispersion uniformity of the aerogel and glass microbeads in the thermal insulation middle coating, improve the uniformity of the thermal insulation middle coating, and improve the thermal insulation uniformity of the insulation board.

[0011] In the second aspect, the present application provides an insulation board exterior wall insulation system with a composite reflective thermal insulation coating, which adopts the following technical solution:

[0012] A thermal insulation system for exterior walls of thermal insulation boards with composite reflective thermal insulation paint comprises, in sequence, a base wall, an adhesive layer coated on the outside of the base wall, an insulation layer fixed on the outside of the adhesive layer, and a connector for fixing the base wall and the insulation layer.

[0013] By adopting the above technical solution, when in use, the adhesive layer bonds the thermal insulation layer to the outside of the base wall, the thermal insulation layer isolates the sunlight and heat radiation in the external environment, maintains the temperature of the base wall, and plays a role in heat insulation. In addition, the connecting parts cooperate with the adhesive layer to fix the insulation board to the outside of the base wall, thereby increasing the firmness between the thermal insulation layer and the base wall.

[0014] Preferably, the connecting member is an anchor bolt.

[0015] By adopting the above technical solution, the construction method of the anchor bolt is simple and quick, and is suitable for construction operations with large engineering quantities.

[0016] Preferably, the connecting member includes an outer tube, an inner tube passed through the outer tube, and a clamping portion fixed to the end of the inner tube facing away from the outer tube, the clamping portion is clamped in the insulation layer, and a tension component for connecting the outer tube and the inner tube is also provided in the outer tube.

[0017] By adopting the above technical solution, when in use, the clamping part provides the insulation layer with a force toward the wall, so that the insulation board is more firmly combined with the base wall, and then the tension between the outer tube and the inner tube is maintained by the tension component, which can adapt to the thermal expansion and contraction of the insulation board and further improve the firmness between the insulation board and the base wall.

[0018] Preferably, the tension assembly includes a winding member arranged in the outer tube, the winding member includes a winding shaft, a steel wire rope wound on the winding shaft, and a return member fixed on the winding shaft, the winding shaft is rotatably connected to the inner tube wall of the outer tube, and the end of the steel wire rope facing away from the winding shaft is connected to the inner tube.

[0019] By adopting the above technical solution, when the insulation board expands and contracts due to heat, the total length between the inner tube and the outer tube connected to the insulation board will also change accordingly, driving the wire rope to be wound and released on the winding shaft. The return member on the winding shaft will accumulate energy when the winding shaft rotates, providing power for the resetting of the winding shaft.

[0020] Preferably, two groups of winding members are provided, and a balancing member for balancing the tension between the steel wire ropes is installed at one end of the steel wire ropes of the two groups of winding members facing away from the winding shaft.

[0021] By adopting the above technical solution, the steel wire ropes of the two sets of winding parts are connected to the inner tube through the balancing part, so that the inner tube can slide along the outer tube more smoothly. In addition, the two steel wire ropes can balance the force between the inner tube and the outer tube, so that the firmness between the insulation layer and the base wall is better.

[0022] Preferably, the balancing member includes a pulley frame and a pulley rotatably connected to the pulley frame, the steel wire ropes of the two groups of winding members are slidably arranged on the pulley, and the side of the pulley frame facing away from the pulley is fixedly connected to the inner tube.

[0023] By adopting the above technical solution, when the steel wire ropes of the two sets of winding parts are wound and released, the pulley can make the lengths of the two steel wire ropes consistent, reduce the occurrence of uneven force, and make the tension component more sensitive to the force changes between the inner tube and the outer tube, so that it can make corresponding adjustments when the insulation layer undergoes slight thermal expansion and contraction.

[0024] Preferably, a limit plate is fixedly provided on one end of the winding shaft away from the return member.

[0025] By adopting the above technical solution, the limit plate provides support force for the wire rope on the reel, reducing the probability of the wire rope slipping off the reel during the reeling and releasing process, and improving the working stability of the tension assembly.

[0026] Preferably, a limiting member is arranged between the outer tube and the inner tube, the limiting member comprises a limiting block and a limiting groove, the limiting groove is fixedly arranged on the outer tube wall of the inner tube, the limiting groove is opened on the inner tube wall of the outer tube, and the limiting block is slidably matched with the limiting groove.

[0027] By adopting the above technical solution, when the wire rope breaks, the limit block can be engaged with the limit groove, and the limit groove generates abutment force for the limit block, thereby reducing the probability of the inner tube slipping off the outer tube and improving safety.

[0028] In summary, this application has the following beneficial effects:

[0029] 1. Since the present application adopts a composite reflective thermal insulation coating on the surface of the thermal insulation board, the reflective thermal insulation coating reflects external heat radiation and sunlight, further improving the thermal insulation performance of the thermal insulation board.

[0030] 2. In the exterior wall insulation system of the insulation board with a composite reflective thermal insulation coating of the present application, the insulation board is stably fixed to the outside of the base wall through an adhesive layer and a connecting piece to insulate the base wall, and the stability of the insulation layer when it expands and contracts due to heat is improved through a tension component, so that the insulation layer is more firm.

[0031] 3. In the insulation board exterior wall insulation system of the composite reflective thermal insulation coating of the present application, the working stability of the tension component is improved by a balancing piece, thereby further improving the firmness of the insulation layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0033] Figure 2 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0034] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A.

[0035] Figure 4 yes Figure 2 A partial enlarged schematic diagram of part B.

[0036] Explanation of the reference numerals in the accompanying drawings: 1. base wall; 2. bonding layer; 3. insulation layer; 31. snap-fit ​​groove; 32. through hole; 4. protective layer; 5. composite reflective thermal insulation coating layer; 6. connecting piece; 61. outer tube; 611. mounting portion; 612. mounting cavity; 62. inner tube; 63. snap-fit ​​portion; 64. external thread; 65. oblique rivet; 66. anchor; 661. connecting rod; 662. anchor claw; 67. limit piece; 671. limit block; 672. limit groove; 7. tension assembly; 71. winding piece; 711. winding shaft; 712. wire rope; 713. limit plate; 72. return piece; 8. balance piece; 81. pulley frame; 82. pulley; 9. anchor bolt; 91. bolt body; 92. expansion tube. DETAILED DESCRIPTION

[0037] The present application is further described in detail below with reference to the embodiments.

[0038] A thermal insulation board with a composite reflective thermal insulation coating comprises a thermal insulation board, a protective layer coated on the side of the thermal insulation board, an alkali-resistant primer layer coated on the surface of the protective layer, and a composite reflective thermal insulation coating layer coated on the surface of the alkali-resistant primer layer; the protective layer is composed of a surface anti-cracking putty and an alkali-resistant glass fiber mesh cloth, the composite reflective thermal insulation coating layer comprises a primer layer, a thermal insulation middle coating layer and a finishing layer, the thermal insulation middle coating layer comprises a lightweight functional material, and the lightweight functional material is composed of aerogel and glass microbeads in a mass ratio of (15-20):(35-45).

[0039] Preferably, the alkali-resistant glass fiber mesh cloth is made of medium-alkali or alkali-free glass fiber fabric. Further preferably, the alkali-resistant glass fiber mesh cloth is made of alkali-free glass fiber fabric. Further preferably, the unit area mass (g / m 2 ) is greater than 130, the alkali-resistant breaking strength (warp, weft / N / 50mm) is greater than 130, the alkali-resistant breaking strength retention rate (warp, weft / %) is greater than 50, and the breaking strain (warp, weft) / % is less than 5.0.

[0040] Preferably, the insulation board is one of graphite polystyrene insulation board, TEPS thermosetting composite polystyrene insulation board, and rock wool insulation board. Further preferably, the insulation board is TEPS thermosetting composite polystyrene insulation board. Further preferably, the TEPS insulation board meets the requirements of JG / T 536 "Thermosetting Composite Polystyrene Foam Insulation Board".

[0041] Preferably, the anti-cracking putty for plastering is mainly composed of the following raw materials in parts by weight: 20-40 parts of binder, 2.5-3 parts of dispersible latex powder, 0.1-0.3 parts of anti-cracking fiber, 20-30 parts of quartz sand, 0.2-0.5 parts of cellulose ether, and 30-50 parts of water; the binder is cement or gypsum. The anti-cracking fiber is polypropylene fiber. The cellulose ether is hydroxyethyl cellulose ether.

[0042] Preferably, the binder is gypsum. Preferably, the performance index of the surface anti-cracking putty meets the requirements of JG / T157 standard.

[0043] Further preferably, the anti-cracking putty for plastering is mainly composed of the following raw materials in parts by weight: 30 parts of binder, 2.8 parts of dispersible latex powder, 0.2 parts of anti-cracking fiber, 25 parts of quartz sand, 0.5 parts of cellulose ether, and 40 parts of water.

[0044] The present application provides a method for preparing an anti-cracking plastering putty slurry, comprising the following steps:

[0045] 1) Stirring the binder, quartz sand, dispersible latex powder, anti-cracking fiber and cellulose ether at a stirring speed of 800 rpm for 10 minutes to prepare a mixture;

[0046] 2) Add water into the mixture in step 1) and stir at a stirring speed of 600 rpm for 5 minutes.

[0047] Preferably, the base coating layer is composed of an alkali-resistant primer. Further preferably, the performance index of the alkali-resistant primer meets the requirements of JG / T210 standard.

[0048] Preferably, the alkali-resistant primer is mainly composed of the following raw materials in parts by weight: 30-50 parts of acrylic emulsion, 2-5 parts of film-forming aid, 1-2 parts of preservative, and 15-20 parts of water. Further preferably, the solid content of the acrylic emulsion is 53%.

[0049] More preferably, the primer layer is mainly composed of the following raw materials in parts by weight: 40 parts of acrylic emulsion, 3.5 parts of film-forming aid, 1.5 parts of preservative, and 18 parts of water.

[0050] The present application provides a method for preparing an alkali-resistant primer slurry, comprising the following steps:

[0051] 1) stirring the acrylic emulsion, the film-forming aid and water at a stirring speed of 600 rpm for 5 minutes to prepare a dispersed emulsion;

[0052] 2) Add the preservative into the dispersed emulsion in step 1) and stir at a stirring speed of 500 rpm for 3 minutes.

[0053] Preferably, the thermal insulation middle coating layer is mainly composed of the following raw materials in parts by weight: the thermal insulation middle coating layer is mainly composed of the following raw materials in parts by weight: 35-60 parts of lightweight functional materials, 25-40 parts of high molecular polymers, and 1-3 parts of additives; the lightweight functional materials are composed of aerogel and glass beads in a mass ratio of (15-20): (35-45), the high molecular polymer includes acrylic emulsion, and the additives include film-forming aids, preservatives, defoaming agents, dispersants, and wetting agents.

[0054] Preferably, the auxiliary agent is composed of a film-forming auxiliary agent, a preservative, a defoamer, a dispersant, and a wetting agent in a mass ratio of (2-4): (1-2): (1-2): (0.5-1): (1-2). More preferably, the auxiliary agent is composed of a film-forming auxiliary agent, a preservative, a defoamer, a dispersant, and a wetting agent in a mass ratio of 3: 1.5: 1.5: 0.7: 1.5.

[0055] Preferably, the performance indexes of the thermal insulation middle coating meet the requirements of DBJ 43 / T 303 standard.

[0056] Preferably, the film-forming aid is at least one of hexanediol butyl ether acetate, hydroxypropyl methylcellulose, and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate. Further preferably, the film-forming aid is composed of hexanediol butyl ether acetate, hydroxypropyl methylcellulose, and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate in a mass ratio of (1-3): (1-2): (0.5-1). Further preferably, the film-forming aid is composed of hexanediol butyl ether acetate, hydroxypropyl methylcellulose, and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate in a mass ratio of 2:1.5:0.8.

[0057] Preferably, the model of the preservative is 632. Preferably, the model of the defoaming agent is AMP-95.

[0058] Preferably, the model of the dispersant is CF-10. Preferably, the model of the wetting agent is X-405.

[0059] Preferably, the aerogel is a silicon-based aerogel. More preferably, the silicon-based aerogel is a silicon-based aerogel microbead. More preferably, the silicon-based aerogel microbead is composed of silicon dioxide aerogel microbeads and silicon carbide aerogel microbeads in a mass ratio of (2-3):(1-2).

[0060] Further preferably, the aerogel further comprises aluminum-doped zinc oxide aerogel microbeads and aluminum oxide aerogel microbeads. Further preferably, the mass ratio of aluminum-doped zinc oxide aerogel microbeads to aluminum oxide aerogel microbeads is (1-2):(2-5), and the mass ratio of aluminum-doped zinc oxide aerogel microbeads to silicon dioxide aerogel microbeads is 1:0.5.

[0061] Preferably, the average particle size of the aerogel microbeads is 100-200 μm. More preferably, the average particle size of the aerogel microbeads is 150 μm. More preferably, the aerogel microbeads are subjected to a polyurethane prepolymer grafting modification treatment.

[0062] Preferably, the polyurethane prepolymer is prepared by polymerization reaction of isocyanate and polyol, the isocyanate is diphenylmethane diisocyanate; the polyol is dimer glycol and polytetramethylene ether glycol in a molar ratio of (2-3):(1-2).

[0063] Preferably, a chain extender is also added during the polymerization reaction of the polyurethane prepolymer, and the mass ratio of the chain extender to the isocyanate is (2-3): (1-2). Further preferably, the chain extender is polyester diol, and the number average molecular weight of the polyester diol is 1000-1800. Further preferably, the number average molecular weight of the polyester diol is 1400.

[0064] Preferably, the polyurethane elastomer grafting modification treatment of aerogel microbeads comprises the following steps:

[0065] 1) Mixing the aerogel microbeads and the polyurethane elastomer under nitrogen protection for 5 minutes, controlling the temperature at 150-160°C, and then adding the chain extender for melt blending for 10 minutes, controlling the temperature at 180°C;

[0066] 2) The melt-blended product is crushed and ground.

[0067] More preferably, the average particle size of the modified aerogel microbeads after grinding is 300-800 μm. More preferably, the average particle size of the modified aerogel microbeads after grinding is 500 μm.

[0068] Preferably, the glass microspheres are hollow glass microspheres. Further preferably, the surface of the hollow glass microspheres is coated with aluminum-doped zinc oxide.

[0069] Further preferably, the surface of the hollow glass microspheres is coated with aluminum-doped zinc oxide by the following steps:

[0070] 1) mixing aluminum-doped zinc oxide and a hyperbranched compound, and then adding a thickener and mixing evenly to obtain a base material;

[0071] 2) Add the hollow glass microspheres to the base material in step 1), mix them evenly at a stirring speed of 500 rpm, and then dry them at 80-90° C. to obtain the base material.

[0072] Preferably, the hyperbranched compound is prepared by a sonogashira coupling reaction of 1,1,2,3,4,5-hexaphenylsilole and 2,1,3-benzothiadiazole under the catalysis of metallic silver.

[0073] Preferably, the thickener is carboxyvinyl polyol with a viscosity of 30,000-40,000 mPa·s. Further preferably, the average molecular weight of carboxyvinyl polyol is 1,000,000-4,000,000. Further preferably, the average molecular weight of carboxyvinyl polyol is 3,000,000.

[0074] Preferably, the aluminum-doped zinc oxide is nano aluminum-doped zinc oxide, and the average particle size of the nano aluminum-doped zinc oxide is 5-15 nm. More preferably, the average particle size of the nano aluminum-doped zinc oxide is 10 nm.

[0075] The present application provides a method for preparing a thermal insulation mid-coat coating, comprising the following steps:

[0076] 1) mixing the aerogel, dispersant, preservative and wetting agent at a stirring speed of 500 rpm for 10 minutes to prepare a slurry base material;

[0077] 2) Add glass microbeads, defoaming agent, high molecular polymer and film-forming aid into the slurry base material in step 1) and mix at a stirring speed of 800 rpm for 5 minutes.

[0078] Preferably, the finishing layer is mainly composed of the following raw materials in parts by weight: 60-80 parts of acrylic emulsion, 10-15 parts of titanium dioxide, 5-10 parts of ceramic microbeads, 0.1-0.3 parts of film-forming aid, 0.1-0.2 parts of preservative, 0.2-0.3 parts of defoaming agent, 0.2-0.5 parts of dispersant, and 0.1-0.2 parts of wetting agent;

[0079] Preferably, the ceramic microspheres are composed of ZrC / C composite ceramic microspheres, SrTiO3 / CaCu3, Ti4O 12 The composite ceramic microbeads, Al2O3 / TiC / CaF2 composite ceramic microbeads and TiO2 / B2O3 composite ceramic microbeads are composed in a mass ratio of (2-3):(1-2):(1-2):(0.5-1).

[0080] Preferably, the raw material further comprises (2-5) parts by weight of tungsten bronze material, and the tungsten bronze material is a titanium-doped tungsten bronze material. Further preferably, the titanium-doped tungsten bronze material is Ti-Cu 0.35 WO3, the molar ratio of Ti / W is 0.03:1.

[0081] Preferably, the raw materials further include (1-3) parts by weight of an anti-cracking agent, wherein the anti-cracking agent is composed of diacetone acrylamide and adipic acid dihydrazide in a molar ratio of 1:1.5.

[0082] The present application provides a method for preparing a reflective heat-insulating topcoat slurry, comprising the following steps:

[0083] 1) mixing acrylic emulsion, ceramic microbeads, film-forming aid, dispersant and wetting agent at a stirring speed of 300 rpm for 15 minutes to prepare a slurry base material;

[0084] 2) Add tungsten bronze material, anti-cracking agent, preservative and defoaming agent to the slurry base material in step 1) and mix and stir at a stirring speed of 800 rpm for 5 minutes, and then evacuate to obtain.

[0085] The present application provides a method for preparing a thermal insulation board of a composite reflective thermal insulation coating, comprising the following steps:

[0086] 1) Make the average flatness deviation of the insulation board surface less than 2mm;

[0087] 2) Apply the alkali-resistant glass fiber mesh cloth and the anti-cracking putty slurry layer by layer on the surface of the insulation board to form a protective layer after drying. The thickness of the reinforcement layer is 3-7 mm;

[0088] 3) coating the anti-alkali primer slurry on the surface of the protective layer, and forming an anti-alkali primer layer after drying;

[0089] 4) applying the thermal insulation middle coating paint on the surface of the alkali-resistant primer layer, and forming the thermal insulation middle coating after drying;

[0090] 5) Apply the reflective heat-insulating topcoat slurry on the surface of the thermal insulation middle coating and obtain the product after drying.

[0091] Further preferably, in step 4), the thickness of the reinforcement layer is set to: 3-5 mm for ordinary type and 5-7 mm for reinforced type.

[0092] The main raw material information of the examples and comparative examples of the present application is shown in Table 1.

[0093] Table 1 Main raw material information of the examples and comparative examples of this application

[0094] raw material Specifications Source Manufacturer TEPS thermosetting composite polystyrene insulation board Industrial Grade Shenyang Oufusi Energy Saving Building Materials Co., Ltd. Cellulose ether LH20M Shanghai Shenzhi Industrial Co., Ltd. Polypropylene fiber Industrial Grade Shandong Guangtong Engineering Materials Co., Ltd. plaster WM-GL7 Henan Wanmei New Building Materials Co., Ltd. Quartz sand 100-200 mesh Fengyang County Yingwu Quartz Sand Co., Ltd. Acrylic Emulsion GB833 BASF Hexanediol Butyl Ether Acetate Chemically pure Alfa Aesar Chemicals Ltd. Hydroxypropyl methylcellulose Chemically pure Alfa Aesar Chemicals Ltd. 2,2,4-Trimethyl-1,3-pentanediol monoisobutyrate Chemically pure Alfa Aesar Chemicals Ltd. preservative 632 Dow Chemical Defoaming agent AMP-95 Dow Chemical Dispersants CF-10 Dow Chemical Wetting Agents X-405 Dow Chemical Silica aerogel microbeads Industrial pure Taoge Nano Technology Co., Ltd. Silicon carbide aerogel microspheres Industrial pure Taoge Nano Technology Co., Ltd. Methylene diphenyl diisocyanate Chemically pure Alfa Aesar Chemicals Ltd. Dimer diol Chemically pure Alfa Aesar Chemicals Ltd. Polytetramethylene ether glycol Chemically pure Alfa Aesar Chemicals Ltd. Polyester diol Chemically pure Alfa Aesar Chemicals Ltd. Glass beads VS5500 3M Aluminum-doped zinc oxide VK-J50L Hangzhou Wanjing New Materials Co., Ltd. ZrC / C composite ceramic microspheres Shanghai Huijing Nanomaterials Co., Ltd. <![CDATA[SrTiO3 / CaCu3、Ti4O 12 Composite ceramic microspheres]]> Shanghai Huijing Nanomaterials Co., Ltd. <![CDATA[Al2O3 / TiC / CaF2 Composite Ceramic Microspheres]]> Shanghai Huijing Nanomaterials Co., Ltd. <![CDATA[TiO2 / B2O3 composite ceramic microspheres]]> Shanghai Huijing Nanomaterials Co., Ltd. Diacetone acrylamide Chemically pure Alfa Aesar Chemicals Ltd. Diacid dihydrazide Chemically pure Alfa Aesar Chemicals Ltd. Thickener 934 Chongqing Kaiyin Chemical Co., Ltd. 1,1,2,3,4,5-Hexaphenylthiol Chemically pure Tianjin Kermiou Chemical Reagent Co., Ltd. 2,1,3-Benzothiadiazole Chemically pure Tianjin Kermiou Chemical Reagent Co., Ltd.

[0095] Example

[0096] Example 1

[0097] The insulation board of the composite reflective thermal insulation coating of the present embodiment includes an insulation board, a protective layer coated on the side of the insulation board, an alkali-resistant primer layer coated on the surface of the protective layer, and a composite reflective thermal insulation coating layer coated on the surface of the alkali-resistant primer layer; the protective layer is composed of anti-cracking putty and alkali-resistant glass fiber mesh cloth, the composite reflective thermal insulation coating layer includes a primer layer, a thermal insulation middle coating layer and a finishing layer, the thermal insulation middle coating layer includes a lightweight functional material, and the lightweight functional material is composed of aerogel and glass beads in a mass ratio of 15:35.

[0098] The method for preparing the thermal insulation board of the composite reflective thermal insulation coating in this embodiment comprises the following steps:

[0099] 1) Make the average flatness deviation of the insulation board surface less than 2mm;

[0100] 2) Apply alkali-resistant glass fiber mesh cloth and anti-cracking putty slurry layer by layer on the surface of the insulation board to form a protective layer after drying. The thickness of the protective layer is 6 mm;

[0101] 3) coating the anti-alkali primer slurry on the surface of the protective layer and forming a primer layer after drying;

[0102] 4) applying the thermal insulation middle coating paint on the surface of the alkali-resistant primer layer, and forming the thermal insulation middle coating after drying;

[0103] 5) Apply the reflective heat-insulating topcoat slurry on the surface of the thermal insulation middle coating, and form a finishing layer after drying.

[0104] The insulation board is TEPS insulation board, and the alkali-resistant glass fiber mesh cloth is made of alkali-free glass fiber fabric.

[0105] The anti-cracking putty slurry of this embodiment is mainly composed of the following raw materials in parts by weight: 30 kg of binder, 2.8 kg of dispersible latex powder, 0.2 kg of anti-cracking fiber, 25 kg of quartz sand, and 0.5 kg of cellulose ether; the binder is gypsum, the anti-cracking agent is polypropylene fiber, and the cellulose ether is hydroxyethyl cellulose ether.

[0106] The preparation method of the anti-cracking putty slurry of the present embodiment comprises the following steps:

[0107] 1) Stirring the binder, quartz sand, dispersible latex powder, anti-cracking fiber and cellulose ether at a stirring speed of 800 rpm for 10 minutes to prepare a mixture;

[0108] 2) Add water into the mixture in step 1) and stir at a stirring speed of 600 rpm for 5 minutes.

[0109] The alkali-resistant primer slurry of this embodiment is mainly composed of the following raw materials in parts by weight: 40 kg of acrylic emulsion, 3.5 kg of film-forming aid, 1.5 kg of preservative, and 18 kg of water.

[0110] The preparation method of the alkali-resistant primer slurry of this embodiment comprises the following steps:

[0111] 1) stirring the acrylic emulsion, the film-forming aid and water at a stirring speed of 600 rpm for 5 minutes to prepare a dispersed emulsion;

[0112] 2) Add the preservative into the dispersed emulsion in step 1) and stir at a stirring speed of 500 rpm for 3 minutes.

[0113] The thermal insulation coating of this embodiment is mainly composed of the following raw materials in parts by weight: 35kg of lightweight functional materials, 25kg of high molecular polymers, and 1kg of additives; the high molecular polymer is an acrylic emulsion, and the additives are composed of film-forming aids, preservatives, defoamers, dispersants, and wetting agents in a mass ratio of 3:1.5:1.5:0.7:1.5. The lightweight functional material is composed of aerogel and glass microspheres in a mass ratio of 15:35. The aerogel is composed of silica aerogel microspheres and silicon carbide aerogel microspheres in a mass ratio of 2:1. The high molecular polymer is an acrylic emulsion. The film-forming aid is composed of hexanediol butyl ether acetate, hydroxypropyl methylcellulose, and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate in a mass ratio of 2:1.5:0.8.

[0114] The preparation method of the thermal insulation middle coating material of this embodiment comprises the following steps:

[0115] 1) mixing the aerogel, dispersant, preservative and wetting agent at a stirring speed of 500 rpm for 10 minutes to prepare a slurry base material;

[0116] 2) Add glass microbeads, defoaming agent, high molecular polymer and film-forming aid into the slurry base material in step 1) and mix at a stirring speed of 800 rpm for 5 minutes.

[0117] The amount (g) of raw materials added to the thermal insulation mid-coat coating in Example 2-3 is shown in Table 2, and the rest is the same as in Example 1.

[0118] Table 2 Amount of each raw material added in the thermal insulation coating in Examples 1-3

[0119] raw material Example 1 Example 2 Example 3 Lightweight functional materials 35 40 50 High molecular weight polymer 25 18 20 Additives 1 4 5

[0120] The reflective heat-insulating topcoat slurry of this embodiment is mainly composed of the following raw materials in parts by weight: 60kg of acrylic emulsion, 10kg of titanium dioxide, 5kg of ceramic microbeads, 0.1kg of film-forming aid, 0.1kg of preservative, 0.2kg of defoamer, 0.2kg of dispersant, and 0.1kg of wetting agent;

[0121] Among them, the ceramic microspheres are composed of ZrC / C composite ceramic microspheres, SrTiO3 / CaCu3, Ti4O 12 The composite ceramic microbeads, the Al2O3 / TiC / CaF2 composite ceramic microbeads and the TiO2 / B2O3 composite ceramic microbeads are composed in a mass ratio of 2:1:1:0.5.

[0122] The method for preparing the reflective heat-insulating topcoat slurry in this embodiment comprises the following steps:

[0123] 1) mixing acrylic emulsion, ceramic microbeads, film-forming aid, dispersant and wetting agent at a stirring speed of 300 rpm for 15 minutes to prepare a slurry base material;

[0124] 2) Add the preservative and defoamer to the slurry base material in step 1), stir at a stirring speed of 800 rpm for 5 minutes, and then evacuate to obtain the slurry.

[0125] The amount (g) of raw materials added to the reflective thermal insulation topcoat slurry in Example 2-3 is shown in Table 3, and the rest is the same as in Example 1.

[0126] Table 3 Addition amount of each raw material in the finishing layer in Examples 1-3

[0127] raw material Example 1 Example 2 Example 3 Acrylic Emulsion 60 70 80 High molecular weight polymer 10 13 15 Film-forming aids 0.1 0.2 0.3 preservative 0.1 0.15 0.2 Defoaming agent 0.2 0.25 0.3 Dispersants 0.2 0.35 0.5 Wetting Agents 0.1 0.15 0.2

[0128] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of Example 2-3 is the same as that in Example 1.

[0129] The preparation method of the anti-cracking putty slurry of Example 2-3 is the same as that of Example 1.

[0130] The preparation method of the alkali-resistant primer slurry of Example 2-3 is the same as that of Example 1.

[0131] The preparation method of the thermal insulation mid-coat coating of Examples 2-3 is the same as that of Example 1.

[0132] The preparation method of the reflective thermal insulation topcoat slurry of Example 2-3 is the same as that of Example 1.

[0133] Example 4

[0134] The difference between the insulation board of the composite reflective thermal insulation coating of this embodiment and that of Example 2 is that the lightweight functional material is composed of aerogel and glass beads in a mass ratio of 18:40, and the rest is the same as in Example 2.

[0135] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of this embodiment is the same as that in Example 1.

[0136] The preparation method of the anti-cracking putty slurry of this embodiment is the same as that in Example 1.

[0137] The preparation method of the alkali-resistant primer slurry of this embodiment is the same as that in Example 1.

[0138] The preparation method of the thermal insulation middle coating material of this embodiment is the same as that in Example 1.

[0139] The preparation method of the reflective thermal insulation topcoat slurry in this embodiment is the same as that in Example 1.

[0140] Example 5

[0141] The difference between the insulation board of the composite reflective thermal insulation coating of this embodiment and that of Embodiment 2 is that the lightweight functional material is composed of aerogel and glass beads in a mass ratio of 20:45, and the rest is the same as in Embodiment 2.

[0142] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of this embodiment is the same as that in Example 1.

[0143] The preparation method of the anti-cracking putty slurry of this embodiment is the same as that in Example 1.

[0144] The preparation method of the alkali-resistant primer slurry of this embodiment is the same as that in Example 1.

[0145] The preparation method of the thermal insulation middle coating material of this embodiment is the same as that in Example 1.

[0146] The preparation method of the reflective thermal insulation topcoat slurry in this embodiment is the same as that in Example 1.

[0147] Example 6

[0148] The difference between the insulation board of the composite reflective thermal insulation coating of this embodiment and that of Example 4 is that the aerogel is composed of silica aerogel microbeads and silicon carbide aerogel microbeads in a mass ratio of 2.5:1.5, and the rest is the same as in Example 4.

[0149] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of this embodiment is the same as that in Example 1.

[0150] The preparation method of the anti-cracking putty slurry of this embodiment is the same as that in Example 1.

[0151] The preparation method of the alkali-resistant primer slurry of this embodiment is the same as that in Example 1.

[0152] The preparation method of the thermal insulation middle coating material of this embodiment is the same as that in Example 1.

[0153] The preparation method of the reflective thermal insulation topcoat slurry in this embodiment is the same as that in Example 1.

[0154] Example 7

[0155] The difference between the insulation board of the composite reflective thermal insulation coating of this embodiment and that of Example 4 is that the aerogel is composed of silica aerogel microbeads and silicon carbide aerogel microbeads in a mass ratio of 3:2, and the rest is the same as in Example 4.

[0156] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of this embodiment is the same as that in Example 1.

[0157] The preparation method of the anti-cracking putty slurry of this embodiment is the same as that in Example 1.

[0158] The preparation method of the alkali-resistant primer slurry of this embodiment is the same as that in Example 1.

[0159] The preparation method of the thermal insulation middle coating material of this embodiment is the same as that in Example 1.

[0160] The preparation method of the reflective thermal insulation topcoat slurry in this embodiment is the same as that in Example 1.

[0161] Example 8

[0162] The difference between the insulation board of the composite reflective thermal insulation coating of this embodiment and that of Example 6 is that the aerogel also includes aluminum-doped zinc oxide aerogel microbeads and aluminum oxide aerogel microbeads, the mass ratio of the aluminum-doped zinc oxide aerogel microbeads and the aluminum oxide aerogel microbeads is 1:2, the mass ratio of the aluminum-doped zinc oxide aerogel microbeads to the silicon dioxide aerogel microbeads is 1:0.5, and the rest is the same as in Example 6.

[0163] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of this embodiment is the same as that in Example 1.

[0164] The preparation method of the anti-cracking putty slurry of this embodiment is the same as that in Example 1.

[0165] The preparation method of the alkali-resistant primer slurry of this embodiment is the same as that in Example 1.

[0166] The preparation method of the thermal insulation middle coating material of this embodiment is the same as that in Example 1.

[0167] The preparation method of the reflective thermal insulation topcoat slurry in this embodiment is the same as that in Example 1.

[0168] Example 9

[0169] The insulation board of the composite reflective thermal insulation coating of this embodiment is different from that of Example 6 in that the aerogel also includes aluminum-doped zinc oxide aerogel microbeads and aluminum oxide aerogel microbeads, the mass ratio of the aluminum-doped zinc oxide aerogel microbeads and the aluminum oxide aerogel microbeads is 1.5:3.5, the mass ratio of the aluminum-doped zinc oxide aerogel microbeads to the silicon dioxide aerogel microbeads is 1:0.5, and the rest is the same as in Example 6.

[0170] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of this embodiment is the same as that in Example 1.

[0171] The preparation method of the anti-cracking putty slurry of this embodiment is the same as that in Example 1.

[0172] The preparation method of the alkali-resistant primer slurry of this embodiment is the same as that in Example 1.

[0173] The preparation method of the thermal insulation middle coating material of this embodiment is the same as that in Example 1.

[0174] The preparation method of the reflective thermal insulation topcoat slurry in this embodiment is the same as that in Example 1.

[0175] Example 10

[0176] The insulation board of the composite reflective thermal insulation coating of this embodiment is different from that of Example 6 in that the aerogel also includes aluminum-doped zinc oxide aerogel microbeads and aluminum oxide aerogel microbeads, the mass ratio of the aluminum-doped zinc oxide aerogel microbeads and the aluminum oxide aerogel microbeads is 2:5, the mass ratio of the aluminum-doped zinc oxide aerogel microbeads to the silicon dioxide aerogel microbeads is 1:0.5, and the rest is the same as in Example 6.

[0177] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of this embodiment is the same as that in Example 1.

[0178] The preparation method of the anti-cracking putty slurry of this embodiment is the same as that in Example 1.

[0179] The preparation method of the alkali-resistant primer slurry of this embodiment is the same as that in Example 1.

[0180] The preparation method of the thermal insulation middle coating material of this embodiment is the same as that in Example 1.

[0181] The preparation method of the reflective thermal insulation topcoat slurry in this embodiment is the same as that in Example 1.

[0182] Embodiment 11

[0183] The difference between the thermal insulation board of the composite reflective thermal insulation coating of this embodiment and that of Embodiment 9 is that the aerogel microbeads have been subjected to a polyurethane prepolymer grafting modification treatment, and the rest is the same as that of Embodiment 9.

[0184] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of this embodiment is the same as that in Example 1.

[0185] The preparation method of the anti-cracking putty slurry of this embodiment is the same as that in Example 1.

[0186] The preparation method of the alkali-resistant primer slurry of this embodiment is the same as that in Example 1.

[0187] The preparation method of the thermal insulation middle coating material of this embodiment is the same as that in Example 1.

[0188] The preparation method of the reflective thermal insulation topcoat slurry in this embodiment is the same as that in Example 1.

[0189] Example 12

[0190] The difference between the thermal insulation board of the composite reflective thermal insulation coating of this embodiment and that of Example 11 is that the surface of the hollow glass microspheres is coated with aluminum-doped zinc oxide, and the rest is the same as that of Example 11.

[0191] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of this embodiment is the same as that in Example 1.

[0192] The preparation method of the anti-cracking putty slurry of this embodiment is the same as that in Example 1.

[0193] The preparation method of the alkali-resistant primer slurry of this embodiment is the same as that in Example 1.

[0194] The preparation method of the thermal insulation middle coating material of this embodiment is the same as that in Example 1.

[0195] The preparation method of the reflective thermal insulation topcoat slurry in this embodiment is the same as that in Example 1.

[0196] Example 13

[0197] The difference between the thermal insulation board of the composite reflective thermal insulation coating of this embodiment and that of embodiment 12 is that the ceramic microspheres are composed of ZrC / C composite ceramic microspheres, SrTiO3 / CaCu3, Ti4O 12 The composite ceramic microbeads, Al2O3 / TiC / CaF2 composite ceramic microbeads, and TiO2 / B2O3 composite ceramic microbeads are composed in a mass ratio of 2.5:1.5:1.5:0.7, and the rest are the same as in Example 12.

[0198] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of this embodiment is the same as that in Example 1.

[0199] The preparation method of the anti-cracking putty slurry of this embodiment is the same as that in Example 1.

[0200] The preparation method of the alkali-resistant primer slurry of this embodiment is the same as that in Example 1.

[0201] The preparation method of the thermal insulation middle coating material of this embodiment is the same as that in Example 1.

[0202] The preparation method of the reflective thermal insulation topcoat slurry in this embodiment is the same as that in Example 1.

[0203] Embodiment 14

[0204] The insulation board of the composite reflective thermal insulation coating of this embodiment is different from that of embodiment 13 in that the ceramic microspheres are composed of ZrC / C composite ceramic microspheres, SrTiO3 / CaCu3, Ti4O 12The composite ceramic microbeads, Al2O3 / TiC / CaF2 composite ceramic microbeads, and TiO2 / B2O3 composite ceramic microbeads are composed in a mass ratio of 3:2:2:1, and the rest are the same as in Example 13.

[0205] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of this embodiment is the same as that in Example 1.

[0206] The preparation method of the anti-cracking putty slurry of this embodiment is the same as that in Example 1.

[0207] The preparation method of the alkali-resistant primer slurry of this embodiment is the same as that in Example 1.

[0208] The preparation method of the thermal insulation middle coating material of this embodiment is the same as that in Example 1.

[0209] The preparation method of the reflective thermal insulation topcoat slurry in this embodiment is the same as that in Example 1.

[0210] Embodiment 15

[0211] The difference between the insulation board of the composite reflective thermal insulation coating of this embodiment and that of Example 14 is that the raw materials of the reflective thermal insulation topcoat slurry also include 2 kg of titanium-doped tungsten bronze material, and the rest is the same as in Example 14.

[0212] The method for preparing the reflective heat-insulating topcoat slurry in this embodiment comprises the following steps:

[0213] 1) mixing acrylic emulsion, ceramic microbeads, film-forming aid, dispersant and wetting agent at a stirring speed of 300 rpm for 15 minutes to prepare a slurry base material;

[0214] 2) Add the titanium-doped tungsten bronze material, the preservative and the defoaming agent to the slurry base material in step 1), stir at a stirring speed of 800 rpm for 5 minutes, and then evacuate to obtain the slurry.

[0215] The amount (g) of raw materials added to the reflective thermal insulation topcoat slurry in Examples 16-17 is shown in Table 4, and the rest is the same as in Example 14.

[0216] Table 4 Addition amount of each raw material in the reflective heat insulation topcoat slurry in Examples 16-17

[0217] raw material Embodiment 15 Example 16 Embodiment 17 Acrylic Emulsion 70 70 70 High molecular weight polymer 13 13 13 Film-forming aids 0.2 0.2 0.2 preservative 0.15 0.15 0.15 Defoaming agent 0.25 0.25 0.25 Dispersants 0.35 0.35 0.35 Wetting Agents 0.15 0.15 0.15 Titanium-doped tungsten bronze material 2 3.5 5

[0218] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of Examples 15-17 is the same as that in Example 1.

[0219] The preparation method of the anti-cracking putty slurry of Examples 15-17 is the same as that in Example 1.

[0220] The preparation method of the alkali-resistant primer slurry of Examples 15-17 is the same as that of Example 1.

[0221] The preparation method of the thermal insulation mid-coat coating of Examples 15-17 is the same as that of Example 1.

[0222] The preparation method of the reflective thermal insulation topcoat slurry of Examples 16-17 is the same as that in Example 15.

[0223] Embodiment 18

[0224] The difference between the insulation board of the composite reflective thermal insulation coating of this embodiment and that of Example 16 is that the raw materials of the reflective thermal insulation topcoat slurry also include 2 kg of anti-cracking agent, and the rest is the same as in Example 14.

[0225] The method for preparing the reflective heat-insulating topcoat slurry in this embodiment comprises the following steps:

[0226] 1) mixing acrylic emulsion, ceramic microbeads, film-forming aid, dispersant and wetting agent at a stirring speed of 300 rpm for 15 minutes to prepare a slurry base material;

[0227] 2) Add the titanium-doped tungsten bronze material, anti-cracking agent, preservative and defoaming agent to the slurry base material in step 1), stir at a stirring speed of 800 rpm for 5 minutes, and then evacuate to obtain the slurry.

[0228] The amount (g) of raw materials added to the reflective thermal insulation topcoat slurry in Examples 19-20 is shown in Table 5, and the rest is the same as in Example 16.

[0229] Table 5 Addition amount of each raw material in the reflective heat insulation topcoat slurry in Examples 18-20

[0230] raw material Example 1 Example 2 Example 3 Acrylic Emulsion 70 70 70 High molecular weight polymer 13 13 13 Film-forming aids 0.2 0.2 0.2 preservative 0.15 0.15 0.15 Defoaming agent 0.25 0.25 0.25 Dispersants 0.35 0.35 0.35 Wetting Agents 0.15 0.15 0.15 Titanium-doped tungsten bronze material 3.5 3.5 3.5 Anti-cracking agent 1 2 3

[0231] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating of Examples 18-20 is the same as that in Example 1.

[0232] The preparation method of the anti-cracking putty slurry of Examples 18-20 is the same as that of Example 1.

[0233] The preparation method of the alkali-resistant primer slurry of Examples 18-20 is the same as that of Example 1.

[0234] The preparation method of the thermal insulation mid-coat coating of Examples 18-20 is the same as that of Example 1.

[0235] The preparation method of the reflective thermal insulation topcoat slurry of Examples 19-20 is the same as that in Example 15.

[0236] Comparative Example

[0237] Comparative Example 1

[0238] The insulation board of the composite reflective thermal insulation coating of this comparative example includes an insulation board, a protective layer coated on the side of the insulation board, and an anti-alkali primer layer coated on the surface of the protective layer; the protective layer is composed of anti-cracking putty and alkali-resistant glass fiber mesh cloth.

[0239] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating in this comparative example comprises the following steps:

[0240] 1) Make the average flatness deviation of the insulation board surface less than 2mm;

[0241] 2) Apply alkali-resistant glass fiber mesh cloth and anti-cracking putty layer by layer on the surface of the insulation board to form a protective layer after drying. The thickness of the protective layer is 6 mm;

[0242] 3) Apply the anti-alkali primer slurry on the surface of the protective layer and form a base coating after drying.

[0243] The insulation board is TEPS insulation board, and the alkali-resistant glass fiber mesh cloth is made of alkali-free glass fiber fabric.

[0244] The anti-cracking putty for plastering in this comparative example is mainly composed of the following raw materials in parts by weight: 30 kg of binder, 2.8 kg of dispersible latex powder, 0.2 kg of anti-cracking fiber, 25 kg of quartz sand, and 0.5 kg of cellulose ether; the binder is gypsum, the anti-cracking agent is polypropylene fiber, and the cellulose ether is hydroxyethyl cellulose ether.

[0245] The preparation method of the anti-cracking putty slurry of this comparative example comprises the following steps:

[0246] 1) Stirring the binder, quartz sand, dispersible latex powder, anti-cracking fiber and cellulose ether at a stirring speed of 800 rpm for 10 minutes to prepare a mixture;

[0247] 2) Add water into the mixture in step 1) and stir at a stirring speed of 600 rpm for 5 minutes.

[0248] The alkali-resistant primer of this comparative example is mainly composed of the following raw materials in parts by weight: 40 kg of acrylic emulsion, 3.5 kg of film-forming aid, 1.5 kg of preservative, and 18 kg of water.

[0249] The preparation method of the alkali-resistant primer slurry of this comparative example comprises the following steps:

[0250] 1) stirring the acrylic emulsion, the film-forming aid and water at a stirring speed of 600 rpm for 5 minutes to prepare a dispersed emulsion;

[0251] 2) Add the preservative into the dispersed emulsion in step 1) and stir at a stirring speed of 500 rpm for 3 minutes.

[0252] Comparative Example 2

[0253] The insulation board with composite reflective thermal insulation coating of this comparative example comprises an insulation board, a protective layer coated on the side of the insulation board, an alkali-resistant primer layer coated on the surface of the protective layer, and a composite reflective thermal insulation coating layer coated on the surface of the alkali-resistant primer layer; the protective layer is composed of anti-cracking putty and alkali-resistant glass fiber mesh cloth, the composite reflective thermal insulation coating layer comprises a primer coating and a thermal insulation middle coating, the thermal insulation middle coating comprises a lightweight functional material, and the lightweight functional material is composed of aerogel and glass beads in a mass ratio of 15:35.

[0254] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating in this comparative example comprises the following steps:

[0255] 1) Make the average flatness deviation of the insulation board surface less than 2mm;

[0256] 2) Apply alkali-resistant glass fiber mesh cloth and anti-cracking putty slurry layer by layer on the surface of the insulation board to form a protective layer after drying. The thickness of the protective layer is 6 mm;

[0257] 3) coating the anti-alkali primer slurry on the surface of the protective layer and forming a primer layer after drying;

[0258] 4) Apply the thermal insulation middle coating paint on the surface of the alkali-resistant primer layer and obtain it after drying.

[0259] The insulation board is TEPS insulation board, and the alkali-resistant glass fiber mesh cloth is made of alkali-free glass fiber fabric.

[0260] The anti-cracking putty for plastering in this comparative example is mainly composed of the following raw materials in parts by weight: 30 kg of binder, 2.8 kg of dispersible latex powder, 0.2 kg of anti-cracking fiber, 25 kg of quartz sand, and 0.5 kg of cellulose ether; the binder is gypsum, the anti-cracking agent is polypropylene fiber, and the cellulose ether is hydroxyethyl cellulose ether.

[0261] The preparation method of the anti-cracking putty slurry of this comparative example comprises the following steps:

[0262] 1) Stirring the binder, quartz sand, dispersible latex powder, anti-cracking fiber and cellulose ether at a stirring speed of 800 rpm for 10 minutes to prepare a mixture;

[0263] 2) Add water into the mixture in step 1) and stir at a stirring speed of 600 rpm for 5 minutes.

[0264] The alkali-resistant primer of this comparative example is mainly composed of the following raw materials in parts by weight: 40 kg of acrylic emulsion, 3.5 kg of film-forming aid, 1.5 kg of preservative, and 18 kg of water.

[0265] The preparation method of the alkali-resistant primer slurry of this comparative example comprises the following steps:

[0266] 1) stirring the acrylic emulsion, the film-forming aid and water at a stirring speed of 600 rpm for 5 minutes to prepare a dispersed emulsion;

[0267] 2) Add the preservative into the dispersed emulsion in step 1) and stir at a stirring speed of 500 rpm for 3 minutes.

[0268] The thermal insulation middle coating of this comparative example is mainly composed of the following raw materials in parts by weight: 35kg of light functional material, 25kg of high molecular polymer, and 1kg of auxiliary agent; the high molecular polymer is acrylic emulsion, and the auxiliary agent is composed of film-forming auxiliary agent, preservative, defoamer, dispersant, and wetting agent in a mass ratio of 3:1.5:1.5:0.7:1.5. The light functional material is composed of aerogel and glass microspheres in a mass ratio of 15:35. The aerogel is composed of silica aerogel microspheres and silicon carbide aerogel microspheres in a mass ratio of 2:1. The high molecular polymer is acrylic emulsion. The film-forming auxiliary agent is composed of hexanediol butyl ether acetate, hydroxypropyl methylcellulose, and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate in a mass ratio of 2:1.5:0.8.

[0269] The preparation method of the thermal insulation middle coating of this comparative example comprises the following steps:

[0270] 1) mixing the aerogel, dispersant, preservative and wetting agent at a stirring speed of 500 rpm for 10 minutes to prepare a slurry base material;

[0271] 2) Add glass microbeads, defoaming agent, high molecular polymer and film-forming aid into the slurry base material in step 1) and mix at a stirring speed of 800 rpm for 5 minutes.

[0272] Comparative Example 3

[0273] The thermal insulation board of the composite reflective thermal insulation coating of the comparative example comprises a thermal insulation board, a protective layer coated on the side of the thermal insulation board, an alkali-resistant primer layer coated on the surface of the protective layer, and a composite reflective thermal insulation coating layer coated on the surface of the alkali-resistant primer layer; the protective layer is composed of a surface anti-cracking putty and an alkali-resistant glass fiber mesh cloth, and the composite reflective thermal insulation coating layer comprises a primer layer and a finishing layer.

[0274] The preparation method of the thermal insulation board of the composite reflective thermal insulation coating in this comparative example comprises the following steps:

[0275] 1) Make the average flatness deviation of the insulation board surface less than 2mm;

[0276] 2) Apply alkali-resistant glass fiber mesh cloth and anti-cracking putty layer by layer on the surface of the insulation board to form a protective layer after drying. The thickness of the protective layer is 6 mm;

[0277] 3) coating the anti-alkali primer slurry on the surface of the protective layer and forming a primer layer after drying;

[0278] 4) Apply the reflective heat-insulating topcoat slurry on the surface of the thermal insulation middle coating and obtain the product after drying.

[0279] The insulation board is TEPS insulation board, and the alkali-resistant glass fiber mesh cloth is made of alkali-free glass fiber fabric.

[0280] The anti-cracking putty for plastering in this comparative example is mainly composed of the following raw materials in parts by weight: 30 kg of binder, 2.8 kg of dispersible latex powder, 0.2 kg of anti-cracking fiber, 25 kg of quartz sand, and 0.5 kg of cellulose ether; the binder is gypsum, the anti-cracking agent is polypropylene fiber, and the cellulose ether is hydroxyethyl cellulose ether.

[0281] The preparation method of the anti-cracking putty slurry of this comparative example comprises the following steps:

[0282] 1) Stirring the binder, quartz sand, dispersible latex powder, anti-cracking fiber and cellulose ether at a stirring speed of 800 rpm for 10 minutes to prepare a mixture;

[0283] 2) Add water into the mixture in step 1) and stir at a stirring speed of 600 rpm for 5 minutes.

[0284] The alkali-resistant primer of this comparative example is mainly composed of the following raw materials in parts by weight: 40 kg of acrylic emulsion, 3.5 kg of film-forming aid, 1.5 kg of preservative, and 18 kg of water.

[0285] The preparation method of the alkali-resistant primer slurry of this comparative example comprises the following steps:

[0286] 1) stirring the acrylic emulsion, the film-forming aid and water at a stirring speed of 600 rpm for 5 minutes to prepare a dispersed emulsion;

[0287] 2) Add the preservative into the dispersed emulsion in step 1) and stir at a stirring speed of 500 rpm for 3 minutes.

[0288] The reflective heat-insulating topcoat slurry of this comparative example is mainly composed of the following raw materials in parts by weight: 60 kg of acrylic emulsion, 10 kg of titanium dioxide, 5 kg of ceramic microbeads, 0.1 kg of film-forming aid, 0.1 kg of preservative, 0.2 kg of defoaming agent, 0.2 kg of dispersant, and 0.1 kg of wetting agent.

[0289] Among them, the ceramic microspheres are composed of ZrC / C composite ceramic microspheres, SrTiO3 / CaCu3, Ti4O 12The composite ceramic microbeads, the Al2O3 / TiC / CaF2 composite ceramic microbeads and the TiO2 / B2O3 composite ceramic microbeads are composed in a mass ratio of 2:1:1:0.5.

[0290] The preparation method of the reflective heat-insulating topcoat slurry in this comparative example comprises the following steps:

[0291] 1) mixing acrylic emulsion, ceramic microbeads, film-forming aid, dispersant and wetting agent at a stirring speed of 300 rpm for 15 minutes to prepare a slurry base material;

[0292] 2) Add the preservative and defoamer to the slurry base material in step 1), stir at a stirring speed of 800 rpm for 5 minutes, and then evacuate to obtain the slurry.

[0293] Performance testing

[0294] Detection method / test method

[0295] Take the insulation board of the composite reflective thermal insulation coating in Examples 1-20 and Comparative Examples 1-3, and fix it on the base wall with an adhesive and anchor bolts to form an exterior wall insulation system, wherein the adhesive is a polymer waterproof adhesive, and the polymer waterproof adhesive meets the Type I requirements specified in JC / T 984-2011 polymer cement waterproof mortar. Then, the performance of the above-mentioned exterior wall insulation system is tested in accordance with the GB / T 29906-2013 test standard, and the test results are shown in Table 6.

[0296] Table 6 Performance test results of the insulation board and the exterior wall insulation system of the composite reflective thermal insulation coating in Examples 1-20 and Comparative Examples 1-3

[0297]

[0298]

[0299] By comparing Examples 1-3 and Comparative Examples 1-3 with Table 6, it can be seen that the insulation board compounded with the thermal insulation middle coating and the reflective insulation topcoat layer has a lower thermal conductivity and thermal insulation performance, which greatly improves the performance indicators of the exterior wall insulation system.

[0300] By comparing Examples 1-7, Examples 8-10 and Comparative Examples 1-3 and combining with Table 6, it can be seen that the aluminum-doped zinc oxide aerogel microspheres and aluminum oxide aerogel microspheres further improve the thermal insulation performance of the exterior wall insulation system.

[0301] By comparing Examples 1-10 and Example 11 and combining with Table 6, it can be seen that after the aerogel microbeads are grafted and modified with the waterborne polyurethane prepolymer, the thermal conductivity of the thermal insulation middle coating is reduced, and the thermal stability of the thermal insulation middle coating is further improved.

[0302] By comparing Examples 1-11 and Example 12 and combining with Table 6, it can be seen that the hollow glass microspheres coated with aluminum-doped zinc oxide further improve the thermal insulation performance of the exterior wall insulation system.

[0303] By comparing Examples 1-14, Examples 15-17 and Comparative Examples 1-3 and combining with Table 6, it can be seen that the titanium-doped tungsten bronze material has excellent near-infrared reflection performance, which can reduce the absorption of external infrared radiation by the exterior wall insulation system.

[0304] By comparing Examples 1-17, Examples 18-19 and Comparative Examples 1-3 and combining with Table 6, it can be seen that the anti-cracking agent can reduce the amount of cracks in the reflective insulation topcoat layer, improve the mirror effect, and further improve its infrared reflection performance.

[0305] In summary, the thermal insulation board of the composite reflective thermal insulation coating and the exterior wall thermal insulation system thereof of the present application have good thermal insulation, heat insulation, and combustion resistance properties.

[0306] The following is combined with Figure 1-4 This application is described in further detail.

[0307] Example 1

[0308] This embodiment discloses a composite reflective thermal insulation coating insulation board exterior wall insulation system. Figure 1 The thermosetting polystyrene insulation board composite reflective thermal insulation coating exterior wall insulation system includes a base wall 1, which can be an exterior wall of a building such as concrete, brick, or masonry. The base wall 1 is provided with an insulation layer 3, an adhesive layer 2 for bonding the insulation layer 3 to the base wall 1, a protective layer 4 coated on the outside of the insulation board, and a composite reflective thermal insulation coating layer 5 coated on the outside of the protective layer 4. The insulation layer 3 is a Class A TEPS thermosetting composite polystyrene insulation board. The adhesive layer 2 can be a two-component adhesive with a coating thickness of not less than 5 mm. A connecting piece 6 for reinforcing the base wall 1 and the insulation layer 3 is also provided between the base wall 1 and the insulation layer 3. The connecting piece 6 is configured as an anchor bolt 9. The anchor bolt 9 includes a bolt body 91 and an expansion tube 92. The bolt body 91 is a plastic nail or a metal screw with anti-corrosion performance. The expansion tube 92 is a plastic expansion sleeve with a disc. The plastic expansion sleeve is made of polyamide, polyethylene or polypropylene, and the heat transfer increase value (W / m*K) of a single anchor bolt 9 is less than 0.04.

[0309] Continue to refer to Figure 1 The expansion tube 92 is embedded in the base wall 1 and the insulation layer 3, so that the disc of the plastic expansion sleeve is fixedly connected to the insulation board. When in use, the bolt body 91 is screwed into the expansion tube 92 to expand the expansion tube 92, thereby increasing the friction between the expansion tube 92 and the base wall 1 and the insulation layer 3, and firmly combining the insulation layer 3 with the base wall 1.

[0310] The implementation principle of the insulation board exterior wall insulation system with a composite reflective thermal insulation coating in this embodiment is: the insulation board is fixed to the outside of the base wall 1 through the adhesive layer 2 and the anchor bolts 9, and the sunlight and external heat are blocked by the insulation layer 3 and the composite reflective thermal insulation coating layer 5, which plays a role in thermal insulation and heat preservation of the base wall 1, and the firmness between the insulation layer 3 and the base wall 1 is enhanced by the anchor bolts 9, thereby increasing the service life and stability of the insulation board exterior wall insulation system with the composite reflective thermal insulation coating.

[0311] Example 2

[0312] The difference between this embodiment and embodiment 1 is that: Figure 2 The connecting member 6 includes an outer tube 61 and an inner tube 62. One end of the outer tube 61 is embedded and fixed in the base wall 1, and the other end of the outer tube 61 extends out of the base wall 1, and the outer tube 61 is perpendicular to the base wall 1. The inner tube 62 is inserted into the outer tube 61 and slidably arranged along the outer tube 61. In order to fix the thermal insulation layer 3, a clamping groove 31 is provided on the thermal insulation layer 3, and a through hole 32 is provided at the bottom of the clamping groove 31, and the through hole 32 passes through the thermal insulation layer 3. A clamping portion 63 is integrally fixed to one end of the inner tube 62 away from the outer tube 61, and the inner tube 62 passes through the through hole 32 and the clamping portion 63 is clamped in the clamping groove 31. In this embodiment, the clamping portion 63 is in the shape of a rectangular plate. The clamping portion 63 provides a force for the thermal insulation layer 3 to move toward the base wall 1, thereby improving the firmness between the thermal insulation layer 3 and the base wall 1. Since the insulation layer 3 will expand and contract when the external temperature changes, which will have an adverse effect on the bonding force between the insulation layer 3 and the base wall 1, a tension component 7 is also installed in the outer tube 61. Through the tension component 7, the total length between the outer tube 61 and the inner tube 62 can change with the thermal expansion and contraction of the insulation layer 3, thereby maintaining the stability of the base wall 1 and the insulation layer 3.

[0313] Reference Figure 2 and Figure 3The tension assembly 7 includes a winding member, and an end of the outer tube 61 away from the inner tube 62 is connected to a mounting portion 611, and the mounting portion 611 is a cylindrical shape with one end sealed, and the mounting portion 611 is coaxially welded and fixed with the outer tube 61. A mounting cavity 612 is provided in the mounting portion 611, and the winding member is installed in the mounting cavity 612. The winding member includes a winding shaft 711 rotatably connected to the inner side wall of the mounting cavity 612, a steel wire rope 712 wound around the winding shaft 711, and a return member 72 arranged on the winding shaft 711. In this embodiment, the return member 72 is a spiral spring, which is sleeved on the winding shaft 711, one end of the spiral spring is welded and fixed to the winding shaft 711, and the other end of the spiral spring is welded and fixed to the inner side wall of the mounting cavity 612. When the winding shaft 711 rotates, the spiral spring can accumulate energy, and when needed, it can be released to rotate the winding shaft 711. The end of the steel wire rope 712 away from the reel 711 is connected to the end of the inner tube 62 extending into the outer tube 61. The end of the reel 711 away from the return member 72 is also integrally fixed with a limit plate 713 coaxially. The limit plate 713 can reduce the probability of the steel wire rope 712 slipping off the reel 711. The steel wire rope 712 provides a pulling force toward the base wall 1 for the inner tube 62, and changes the length of the inner tube 62 extending into the outer tube 61 under the cooperation of the reel 711 and the return member 72, thereby adjusting the total length between the outer tube 61 and the inner tube 62 so that it can adapt to the thermal expansion and contraction of the thermal insulation layer 3.

[0314] In order to maintain the balance of the inner tube 62, refer to Figure 3 and Figure 4 There are two groups of winding members, and the winding members are symmetrically arranged. The ends of the steel wire ropes 712 on the two groups of winding shafts 711 that are away from the winding shafts 711 are connected together, and the winding directions of the steel wire ropes 712 on the two groups of winding shafts 711 are the same. A balancing member 8 is also arranged inside the outer tube 61, and the balancing member 8 includes a pulley frame 81 and a pulley 82 rotatably connected to the pulley frame 81. The end of the steel wire rope 712 that is away from the winding shaft 711 is sleeved on the pulley 82, and the end of the pulley frame 81 that is away from the pulley 82 is connected to the end of the inner tube 62 through a rope. When the insulation layer 3 expands, the insulation layer 3 drives the inner tube 62 to move in the direction away from the outer tube 61, and the inner tube 62 drives the pulley frame 81 to move in the direction away from the winding shaft 711. The steel wire rope 712 on the two groups of winding shafts 711 is released under the tension of the pulley frame 81, driving the winding shaft 711 to rotate, and the return member 72 accumulates energy; when the insulation layer 3 contracts, the two groups of return members 72 release energy and drive the winding shaft 711 to rotate, so that the steel wire rope 712 is wound around the winding shaft 711 and pulls the pulley frame 81 toward the winding shaft 711, thereby driving the inner tube 62 to move toward the winding shaft 711, so that the limit plate 713 continues to provide tension for the insulation layer 3, thereby maintaining the bonding force between the insulation layer 3 and the base wall 1.

[0315] Continue to refer to Figure 4, the steel wire rope 712 is easily corroded by the external environment after being used for a long time. The tensile strength of the steel wire rope 712 is reduced after being corroded, and it is easy to break, which causes the inner tube 62 to slip out of the outer tube 61. In order to solve the above problem, a limiter 67 is provided between the inner tube 62 and the outer tube 61. The limiter 67 includes a limiter block 671 welded and fixed on the wall of the outer tube 61 of the inner tube 62. A limiter groove 672 adapted to the limiter block 671 is provided on the wall of the inner tube 62 of the outer tube 61. The direction of the limiter groove 672 is parallel to the axial direction of the outer tube 61. The limiter block 671 is slidably fitted in the limiter groove 672. When the steel wire rope 712 breaks, the limiter block 671 is engaged with the limiter groove 672 to reduce the probability of the inner tube 62 being separated from the outer tube 61, and reduce the occurrence of the separation of the thermal insulation layer 3 and the base wall 1.

[0316] In order to increase the bonding force between the outer tube 61 and the base wall 1, refer to Figure 2 , an external thread 64 is provided on the wall of the outer tube 61 of the outer tube 61. In addition, a plurality of oblique rivets 65 are fixed on the outer side wall of the mounting portion 611, and the plurality of oblique rivets 65 are evenly spaced and distributed along the outer side wall of the mounting portion 611. The external thread 64 and the oblique rivets 65 are used to improve the bonding force between the outer tube 61 and the base wall 1, thereby improving the stability of the outer tube 61. The end of the mounting portion 611 away from the inner tube 62 is also fixedly connected with an anchor 66, which includes a connecting rod 661 and a plurality of anchor claws 662, and the anchor claws 662 are evenly spaced and fixed on the outer side wall of the connecting rod 661, and the anchor claws 662 are inclinedly arranged. The anchor 66 is used to further improve the bonding force between the outer tube 61 and the base wall 1, thereby improving the firmness of the thermal insulation layer 3.

[0317] The implementation principle of the exterior wall insulation system of a thermosetting polystyrene insulation board composite reflective thermal insulation coating according to an embodiment of the present application is as follows: when in use, the insulation layer 3 is fixed to the base exterior wall through the adhesive layer 2 and the connecting piece 6, and then the protective layer 4 and the building reflective thermal insulation coating 5 are compounded on the insulation layer 3, and the base wall 1 is insulated by the insulation layer 3 and the building reflective thermal insulation coating 5, and then the total length of the outer tube 61 and the inner tube 62 is adjusted by the tension component 7, so as to adapt to the thermal expansion and contraction of the insulation layer 3, thereby improving the bonding strength and firmness between the insulation layer 3 and the base wall 1.

[0318] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. An insulation board exterior wall insulation system with composite reflective thermal insulation coating, characterized in that: It comprises, in sequence, a base wall (1), an adhesive layer (2) coated on the outside of the base wall (1), a thermal insulation layer (3) fixed on the outside of the adhesive layer (2), and a connecting piece (6) for fixing the base wall (1) and the thermal insulation layer (3); The connecting member (6) comprises an outer tube (61), an inner tube (62) passing through the outer tube (61), and a clamping portion (63) fixed to an end of the inner tube (62) away from the outer tube (61); the clamping portion (63) is clamped and arranged in the thermal insulation layer (3); and a tension component (7) for connecting the outer tube (61) and the inner tube (62) is also arranged in the outer tube (61); The tension assembly (7) comprises a winding member arranged in the outer tube (61), the winding member comprising a winding shaft (711), a steel wire rope (712) wound on the winding shaft (711), and a return member (72) fixed on the winding shaft (711), the winding shaft (711) is rotatably connected to the wall of the inner tube (62) of the outer tube (61), and one end of the steel wire rope (712) away from the winding shaft (711) is connected to the inner tube (62) of the outer tube (61). (62) is connected; a limiting member (67) is arranged between the outer tube (61) and the inner tube (62), the limiting member (67) comprising a limiting block (671) and a limiting groove (672), the limiting groove (672) is fixedly arranged on the wall of the outer tube (61) of the inner tube (62), the limiting groove (672) is opened on the wall of the inner tube (62) of the outer tube (61), and the limiting block (671) and the limiting groove (672) are slidably matched.

2. The thermal insulation board exterior wall thermal insulation system of the composite reflective thermal insulation coating according to claim 1 is characterized by: The winding members are provided in two groups, and a balancing member (8) for balancing the tension between the steel wire ropes (712) is installed at one end of the steel wire ropes (712) of the two groups of the winding members away from the winding shaft (711).

3. The thermal insulation board exterior wall thermal insulation system of the composite reflective thermal insulation coating according to claim 2 is characterized by: The balancing member (8) comprises a pulley frame (81) and a pulley (82) rotatably connected to the pulley frame (81), the steel wire ropes (712) of the two groups of winding members are slidably arranged on the pulley (82), and the side of the pulley frame (81) facing away from the pulley (82) is fixedly connected to the inner tube (62).

4. The thermal insulation board exterior wall thermal insulation system of the composite reflective thermal insulation coating according to claim 1 is characterized by: A limiting plate (713) is fixedly provided on one end of the reel (711) away from the return member (72).

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