A polyurethane adhesive and a method for continuously producing a polyurethane thermal insulation decorative panel based on a magnesium substrate using the same

Abstract

The present application belongs to the technical field of polyurethane composite insulation board production, and particularly relates to a polyurethane glue and a method for continuously producing a polyurethane insulation decorative board based on a magnesium substrate by using the polyurethane glue. The glue comprises component A and component B. Component A is composed of the following raw materials in parts by weight: 15-35 parts of polyether polyol I, 15-35 parts of polyether polyol II, 30-60 parts of polyester polyol, 1-3 parts of foam stabilizer, 1-5 parts of catalyst, 5-20 parts of viscosity reducer, and 3-10 parts of chain extender. Component B of the glue is isocyanate. The mass ratio of component A of the glue to component B of the glue is 1:0.95-1.05. The polyurethane insulation decorative board based on the magnesium substrate can be continuously produced by using the glue, so that the bonding strength and weather resistance of the polyurethane insulation decorative board can be enhanced, and the problem of air bubbles between the magnesium substrate and the polyurethane can be solved.

Description

Technical Field

[0001] This invention belongs to the field of polyurethane composite insulation board production technology, specifically relating to a polyurethane adhesive and a method for continuously producing polyurethane insulation decorative boards based on magnesium substrates. Background Technology

[0002] Polyurethane insulation decorative panels are a new product in building energy conservation, integrating insulation and decoration. They are easy to install, have good insulation effects, and are widely used for interior wall insulation. The substrates are divided into metal and non-metal types. Non-metallic substrates are mainly divided into organic and inorganic boards, such as organic-PVC boards, inorganic-magnesium oxysulfate boards, and inorganic-magnesium oxide boards. When using magnesium substrates, due to the large number of micropores, acidic substances, and water on the surface of magnesium oxysulfate boards / magnesium oxide boards, when polyurethane raw materials are sprayed onto their surface, the polyurethane raw materials penetrate into the micropores of the substrate surface, causing gas to be released. Furthermore, the acidic substances and water react with isocyanate groups (-NCO) to produce CO2. Simultaneously, the rapid molding of polyurethane foam creates resistance, preventing gas from escaping and forming bubbles between the substrate and the polyurethane foam. During continuous production, a large number of bubbles will be distributed between the substrate and the polyurethane foam, affecting the appearance and product performance, such as adhesion strength.

[0003] This invention aims to solve the interface problem between magnesium substrate and polyurethane material by pretreating the substrate before spraying polyurethane raw materials. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a polyurethane adhesive for use between a magnesium substrate and a polyurethane material, and to provide a method for continuously producing polyurethane thermal insulation decorative panels based on a magnesium substrate using the adhesive.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] Technical Topic 1

[0007] A polyurethane adhesive, the key feature of which is that it comprises component A and component B; component A is composed of the following raw materials in parts by weight: 15-35 parts polyether polyol I, 15-35 parts polyether polyol II, 30-60 parts polyester polyol, 1-3 parts foam stabilizer, 1-5 parts catalyst, 5-20 parts viscosity reducer, and 3-10 parts chain extender.

[0008] Component B of the adhesive is isocyanate;

[0009] The mass ratio of component A to component B of the adhesive is 1:0.95-1.05.

[0010] As a further improvement of the present invention, the polyether polyol I in the adhesive component has a functionality of 3, a hydroxyl value of 455-495 mg KOH / g, and a viscosity of 420-520 mPa.s at 25°C;

[0011] The polyether polyol II has a functionality of 3, a hydroxyl value of 230-250 mg KOH / g, and a viscosity of 220-280 mPa.s at 25°C.

[0012] The polyester polyol has a functionality of 2, a hydroxyl value of 300-330 mg KOH / g, and a viscosity of 2000-3000 mPa.s at 25°C.

[0013] The isocyanate is a polyphenyl polymethylene polyisocyanate.

[0014] As a further improvement of the present invention, the polyether polyol I in the adhesive component is YD-303, the polyether polyol II is YD-307, the polyester polyol is YD-3152, the foam stabilizer is an organosilicon surfactant, the catalyst is a tertiary amine catalyst, and the chain extender is diethylene glycol.

[0015] The polyphenyl polymethylene polyisocyanate is Wanhua PM-200.

[0016] As a further improvement of the present invention, the viscosity reducer is selected from propylene carbonate and / or TCPP;

[0017] The foaming agent is Momentive L6900 or / and Myrmann 8900;

[0018] The catalyst is Hejia Chemical A33 or / and Hejia Chemical PC-15.

[0019] As a further improvement of the present invention, component A of the adhesive comprises the following components in parts by weight: 15-35 parts YD-303, 15-35 parts YD-307, 30-60 parts YD-3152, 5-20 parts propylene carbonate, 3-10 parts diethylene glycol, 1-3 parts Momentive L6900, and 1-5 parts catalyst A33.

[0020] The mass ratio of component A to component B of the adhesive is 1:1.

[0021] Technical Theme Two

[0022] A method for continuous production of polyurethane insulation decorative panels based on magnesium substrates, the key feature of which is that the polyurethane insulation decorative panels comprise a magnesium substrate, an adhesive layer, a polyurethane layer, and a decorative layer, and are prepared through the following steps:

[0023] S1, glue on substrate

[0024] A magnesium substrate is laid flat on a mold bed. Component A of the adhesive described in any one of claims 1-5 is mixed evenly and then mixed evenly with component B. The evenly mixed adhesive is then evenly applied to the upper surface of the magnesium substrate.

[0025] S2, Injection Foaming

[0026] Polyurethane raw materials are injected into a foaming machine for mixing. When the adhesive on the upper surface of the magnesium substrate in S1 is in a stringy state and the viscosity is 1000~1500mpa·s, polyurethane foam is applied to the magnesium substrate coated with adhesive. The magnesium substrate coated with polyurethane foam and the decorative board are fed into a laminator for lamination.

[0027] S3, Maturation

[0028] The laminated board is cured at 50-60℃ for 8-12 minutes to obtain polyurethane insulation decorative board.

[0029] As a further improvement of the present invention, the magnesium substrate is a glass magnesium board or a magnesium oxysulfate board.

[0030] As a further improvement of the present invention, the decorative panel is an aluminum foil panel or an aluminum composite panel.

[0031] As a further improvement of the present invention, in the substrate adhesive application step, the ambient temperature is 28-32℃, the material temperature is 28-30℃, the temperature of the magnesium substrate is 28-32℃, and the adhesive application amount is 120-140g / m². 2 .

[0032] Technical Theme 3

[0033] A polyurethane thermal insulation decorative panel based on a magnesium substrate, prepared by the method described in Technical Subject 2.

[0034] The beneficial effects of adopting the above technical solution are as follows:

[0035] This invention provides a method for continuous production of polyurethane insulation decorative panels based on magnesium substrates, which solves the bonding problem between the magnesium substrate and polyurethane in the continuous production of polyurethane insulation decorative panels based on magnesium substrates. The polyurethane insulation decorative panels prepared by this method have greater bonding strength and weather resistance between the magnesium substrate and polyurethane. Attached Figure Description

[0036] Figure 1 These are sample photos of polyurethane thermal insulation decorative panels prepared by the method described in Example 1 of this invention.

[0037] Figure 2 The image shows a sample of a polyurethane thermal insulation decorative panel prepared by the method described in Comparative Example 1 of this invention.

[0038] Figure 3 The image shows a sample of a polyurethane thermal insulation decorative panel prepared by the method described in Comparative Example 2 of this invention.

[0039] Figure 4 The image shows a sample photograph of a polyurethane thermal insulation decorative panel prepared by the method described in Comparative Example 3 of this invention. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the present invention clearer, the invention will be described clearly and completely below in conjunction with specific embodiments.

[0041] YD-303, YD-307, YD-3152, YD-4110, and YD-9400 used in this application were all provided by Hebei Yadong Chemical Group Co., Ltd.; their parameters are as follows:

[0042]

[0043] A33 (i.e., 33% triethylenediamine solution, a solution obtained by dissolving triethylenediamine in diethylene glycol, with a triethylenediamine mass fraction of 33%) was provided by Hejia Chemical;

[0044] Momentive Performance Materials L6900 was selected as the foaming agent used.

[0045] The polyphenyl polymethylene polyisocyanate is Wanhua Chemical PM-200.

[0046] Example 1

[0047] The raw materials used in this embodiment are as follows, by mass parts: Component A of the adhesive includes 20 parts YD-303, 30 parts YD-307, 50 parts YD-3152, 8 parts propylene carbonate, 5 parts diethylene glycol, 1.5 parts Momentive L6900, and 2.8 parts catalyst A33; Component B of the adhesive is polyphenylene polymethylene polyisocyanate, which is Wanhua PM-200; the mass ratio of component A to component B is 1:1.

[0048] The polyurethane foam used includes:

[0049] The polyether composition is as follows: 50 parts general-purpose sucrose polyether polyol YD-4110, 50 parts polyester polyol YD-9400, 20 parts TCPP (trichloropropyl phosphate), 15 parts TEP (triethyl phosphate), 0.3 parts PC-5 (pentamethyldiethylenetriamine), 1.6 parts KAC (potassium acetate diethylene glycol), 3 parts Momentive L6900, 2 parts A33, 17 parts physical foaming agent CP (cyclopentane), and 2.4 parts water. These components are added to a container according to the formula ratio and stirred for 20 minutes until the materials are uniformly mixed. The preparation is now complete.

[0050] Negative News: Wanhua's PM-200

[0051] Polyurethane is produced by mixing polyether and black material at a mass ratio of 1:1.3 using a foaming machine.

[0052] The substrate used in this embodiment is a magnesium oxysulfate substrate (purchased from Zhangjiagang Huiyang Building Materials Co., Ltd., item number WY-LYMG-004);

[0053] The decorative layer is made of aluminum foil; the specific experimental steps are as follows:

[0054] S1, glue on substrate

[0055] Wipe the substrate surface, lay the substrate flat on the mold bed, mix component A and component B of the adhesive, apply the evenly mixed adhesive to the upper surface of the substrate, and spread it evenly with a roller. The ambient temperature, material temperature, and magnesium oxysulfate substrate temperature are all 30℃ during adhesive application. The adhesive application amount is controlled at 120-140g / m². 2 ;

[0056] S2, Injection Foaming

[0057] The polyether component of the polyurethane is injected into a foaming machine for mixing. When the adhesive thickness on the surface of the magnesium substrate reaches 1-2 mm and is in a stringy state (at this point, the adhesive viscosity is in the range of 1000~1500 mPa·s), the polyurethane foam material is applied to the adhesive-coated magnesium substrate using the foaming machine. The pressure of the polyether component is 0.3 MPa, the pressure of the black component is 0.37 MPa, and the polyurethane application rate is 770 g / m³. 2 The mass ratio of polyether to black material is 1:1.3. In this embodiment, the distance between the adhesive application position and the fabric application position is set at 1.5m. The adhesive and fabric are applied at a speed of 4m / min. When the adhesive application position reaches the fabric application position, the adhesive is just beginning to string. The magnesium substrate coated with polyurethane foam and the decorative board are fed into the laminator for lamination. The lamination pressure is 0.1Mpa, the lamination temperature is 55℃, and the holding time is 170s.

[0058] S3, Maturation

[0059] After lamination, the polyurethane foam-coated board is cured at 55℃ for 10 minutes to obtain a polyurethane insulation decorative board. A photograph of the resulting material is shown below. Figure 1 As shown in the photograph, the air bubble problem between the magnesium substrate and the polyurethane foam material in the polyurethane insulation decorative panel prepared by the method described in this application has been improved.

[0060] Example 2

[0061] The raw materials used in this embodiment are as follows, by mass parts: Component A of the adhesive includes 15 parts YD-303, 25 parts YD-307, 60 parts YD-3152, 5 parts propylene carbonate, 3 parts diethylene glycol, 3 parts Momentive L6900, and 5 parts catalyst A33; Component B of the adhesive is polyphenylene polymethylene polyisocyanate, which is Wanhua PM-200; the mass ratio of component A to component B is 1:1.

[0062] The polyurethane foam used includes:

[0063] The polyether composition is as follows: 50 parts general-purpose sucrose polyether polyol YD-4110, 50 parts polyester polyol YD-9400, 20 parts TCPP (trichloropropyl phosphate), 15 parts TEP (triethyl phosphate), 0.3 parts PC-5 (pentamethyldiethylenetriamine), 1.6 parts KAC (potassium acetate diethylene glycol), 3 parts Momentive L6900, 2 parts A33, 17 parts physical foaming agent CP (cyclopentane), and 2.4 parts water. These components are added to a container according to the formula ratio and stirred for 20 minutes until the materials are uniformly mixed. The preparation is now complete.

[0064] Negative News: Wanhua's PM-200

[0065] Polyurethane is produced by mixing polyether and black material at a mass ratio of 1:1.3 using a foaming machine.

[0066] The substrate used in this embodiment is a magnesium oxysulfate substrate (purchased from Zhangjiagang Huiyang Building Materials Co., Ltd., item number WY-LYMG-004);

[0067] The decorative layer is made of aluminum foil; the specific experimental steps are as follows:

[0068] S1, glue on substrate

[0069] Wipe the substrate surface, lay the substrate flat on the mold bed, mix component A and component B of the adhesive, apply the evenly mixed adhesive to the upper surface of the substrate, and spread it evenly with a roller. The ambient temperature, material temperature, and magnesium oxysulfate substrate temperature are all 30℃ during adhesive application. The adhesive application amount is controlled at 120-140g / m². 2 ;

[0070] S2, Injection Foaming

[0071] The polyether component of the polyurethane is injected into a foaming machine for mixing. When the adhesive thickness on the surface of the magnesium substrate reaches 1-2 mm and is in a stringy state (at this point, the adhesive viscosity is in the range of 1000~1500 mPa·s), the polyurethane foam material is applied to the adhesive-coated magnesium substrate using the foaming machine. The pressure of the polyether component is 0.3 MPa, the pressure of the black component is 0.37 MPa, and the polyurethane application rate is 770 g / m³. 2The mass ratio of polyether to black material is 1:1.3. In this embodiment, the distance between the adhesive application position and the fabric application position is set at 1.5m. The adhesive and fabric are applied at a speed of 4m / min. When the adhesive application position reaches the fabric application position, the adhesive is just beginning to string. The magnesium substrate coated with polyurethane foam and the decorative board are fed into the laminator for lamination. The lamination pressure is 0.1Mpa, the lamination temperature is 55℃, and the holding time is 170s.

[0072] S3, Maturation

[0073] After lamination, the board with polyurethane foam is cured at 55℃ for 10 minutes to obtain polyurethane insulation decorative board.

[0074] Example 3

[0075] The raw materials used in this embodiment are as follows, by mass parts: Component A of the adhesive includes 35 parts YD-303, 35 parts YD-307, 30 parts YD-3152, 20 parts propylene carbonate, 10 parts diethylene glycol, 1 part Momentive L6900, and 1 part catalyst A33; Component B of the adhesive is polyphenylene polymethylene polyisocyanate, which is Wanhua PM-200; the mass ratio of component A to component B is 1:1.

[0076] The polyurethane foam used includes:

[0077] The polyether composition is as follows: 50 parts general-purpose sucrose polyether polyol YD-4110, 50 parts polyester polyol YD-9400, 20 parts TCPP (trichloropropyl phosphate), 15 parts TEP (triethyl phosphate), 0.3 parts PC-5 (pentamethyldiethylenetriamine), 1.6 parts KAC (potassium acetate diethylene glycol), 3 parts Momentive L6900, 2 parts A33, 17 parts physical foaming agent CP (cyclopentane), and 2.4 parts water. These components are added to a container according to the formula ratio and stirred for 20 minutes until the materials are uniformly mixed. The preparation is now complete.

[0078] Negative News: Wanhua's PM200

[0079] Polyurethane is produced by mixing polyether and black material at a mass ratio of 1:1.3 using a foaming machine.

[0080] The substrate used in this embodiment is a magnesium oxysulfate substrate (purchased from Zhangjiagang Huiyang Building Materials Co., Ltd., item number WY-LYMG-004);

[0081] The decorative layer is made of aluminum foil; the specific experimental steps are as follows:

[0082] S1, glue on substrate

[0083] Wipe the substrate surface, lay the substrate flat on the mold bed, mix component A and component B of the adhesive, apply the evenly mixed adhesive to the upper surface of the substrate, and spread it evenly with a roller. The ambient temperature, material temperature, and magnesium oxysulfate substrate temperature are all 30℃ during adhesive application. The adhesive application amount is controlled at 120-140g / m². 2 ;

[0084] S2, Injection Foaming

[0085] The polyether component of the polyurethane is injected into a foaming machine for mixing. When the adhesive thickness on the surface of the magnesium substrate reaches 1-2 mm and is in a stringy state (at this point, the adhesive viscosity is in the range of 1000~1500 mPa·s), the polyurethane foam material is applied to the adhesive-coated magnesium substrate using the foaming machine. The pressure of the polyether component is 0.3 MPa, the pressure of the black component is 0.37 MPa, and the polyurethane application rate is 770 g / m³. 2 The mass ratio of polyether to black material is 1:1.3. In this embodiment, the distance between the adhesive application position and the fabric application position is set at 1.5m. The adhesive and fabric are applied at a speed of 4m / min. When the adhesive application position reaches the fabric application position, the adhesive is just beginning to string. The magnesium substrate coated with polyurethane foam and the decorative board are fed into the laminator for lamination. The lamination pressure is 0.1Mpa, the lamination temperature is 55℃, and the holding time is 170s.

[0086] S3, Maturation

[0087] After lamination, the board with polyurethane foam is cured at 55℃ for 10 minutes to obtain polyurethane insulation decorative board.

[0088] Example 4

[0089] The raw materials used in this embodiment are as follows, by mass parts: Component A of the adhesive includes 15 parts YD-303, 35 parts YD-307, 50 parts YD-3152, 8 parts propylene carbonate, 5 parts diethylene glycol, 1.5 parts Momentive L6900, and 2.8 parts catalyst A33; Component B of the adhesive is polyphenylene polymethylene polyisocyanate, which is Wanhua PM-200. The mass ratio of component A to component B is 1:1.

[0090] The polyurethane foam used includes:

[0091] The polyether composition is as follows: 50 parts general-purpose sucrose polyether polyol YD-4110, 50 parts polyester polyol YD-9400, 20 parts TCPP (trichloropropyl phosphate), 15 parts TEP (triethyl phosphate), 0.3 parts PC-5 (pentamethyldiethylenetriamine), 1.6 parts KAC (potassium acetate diethylene glycol), 3 parts Momentive L6900, 2 parts A33, 17 parts physical foaming agent CP (cyclopentane), and 2.4 parts water. These components are added to a container according to the formula ratio and stirred for 20 minutes until the materials are uniformly mixed. The preparation is now complete.

[0092] Negative News: Wanhua's PM200

[0093] Polyurethane is produced by mixing polyether and black material at a mass ratio of 1:1.3 using a foaming machine.

[0094] The substrate used in this embodiment is a magnesium oxide board (purchased from Jiaxiang Xiangshuo Building Materials Co., Ltd., item number JN-BM-548);

[0095] The decorative layer is made of aluminum foil; the specific experimental steps are as follows:

[0096] S1, glue on substrate

[0097] Wipe the substrate surface, lay the substrate flat on the mold bed, mix component A and component B of the adhesive, apply the evenly mixed adhesive to the upper surface of the substrate, and spread it evenly with a roller. The ambient temperature, material temperature, and magnesium oxide board temperature are all 30℃ during adhesive application. The adhesive application amount is controlled at 120-140g / m². 2 ;

[0098] S2, Injection Foaming

[0099] The polyether component of the polyurethane is injected into a foaming machine for mixing. When the adhesive thickness on the surface of the magnesium substrate reaches 1-2 mm and is in a stringy state (at this point, the adhesive viscosity is in the range of 1000~1500 mPa·s), the polyurethane foam material is applied to the adhesive-coated magnesium substrate using the foaming machine. The pressure of the polyether component is 0.3 MPa, the pressure of the black component is 0.37 MPa, and the polyurethane application rate is 770 g / m³. 2 The mass ratio of polyether to black material is 1:1.3. In this embodiment, the distance between the adhesive application position and the fabric application position is set at 1.5m. The adhesive and fabric are applied at a speed of 4m / min. When the adhesive application position reaches the fabric application position, the adhesive is just beginning to string. The magnesium substrate coated with polyurethane foam and the decorative board are fed into the laminator for lamination. The lamination pressure is 0.1Mpa, the lamination temperature is 55℃, and the holding time is 170s.

[0100] S3, Maturation

[0101] After lamination, the board with polyurethane foam is cured at 55℃ for 10 minutes to obtain polyurethane insulation decorative board.

[0102] Example 5

[0103] The raw materials used in this embodiment are as follows, by mass parts: Component A of the adhesive includes 20 parts YD-303, 30 parts YD-307, 50 parts YD-3152, 8 parts propylene carbonate, 5 parts diethylene glycol, 1.5 parts Momentive L6900, and 2.8 parts catalyst A33; Component B of the adhesive is Wanhua PM-200 polyphenylene polymethylene polyisocyanate; and the mass ratio of component A to component B is 1:0.95.

[0104] The polyurethane foam used includes:

[0105] The polyether composition is as follows: 50 parts general-purpose sucrose polyether polyol YD-4110, 50 parts polyester polyol YD-9400, 20 parts TCPP (trichloropropyl phosphate), 15 parts TEP (triethyl phosphate), 0.3 parts PC-5 (pentamethyldiethylenetriamine), 1.6 parts KAC (potassium acetate diethylene glycol), 3 parts Momentive L6900, 2 parts A33, 17 parts physical foaming agent CP (cyclopentane), and 2.4 parts water. These components are added to a container according to the formula ratio and stirred for 20 minutes until the materials are uniformly mixed. The preparation is now complete.

[0106] Negative News: Wanhua's PM-200

[0107] Polyurethane is produced by mixing polyether and black material at a mass ratio of 1:1.3 using a foaming machine.

[0108] The substrate used in this embodiment is a magnesium oxysulfate substrate (purchased from Zhangjiagang Huiyang Building Materials Co., Ltd., item number WY-LYMG-004);

[0109] The decorative layer is made of aluminum foil; the specific experimental steps are as follows:

[0110] S1, glue on substrate

[0111] Wipe the substrate surface, lay the substrate flat on the mold bed, mix component A and component B of the adhesive, apply the evenly mixed adhesive to the upper surface of the substrate, and spread it evenly with a roller. The ambient temperature, material temperature, and magnesium oxysulfate substrate temperature are all 30℃ during adhesive application. The adhesive application amount is controlled at 120-140g / m². 2 ;

[0112] S2, Injection Foaming

[0113] The polyether component of the polyurethane is injected into a foaming machine for mixing. When the adhesive thickness on the surface of the magnesium substrate reaches 1-2 mm and is in a stringy state (at this point, the adhesive viscosity is in the range of 1000~1500 mPa·s), the polyurethane foam material is applied to the adhesive-coated magnesium substrate using the foaming machine. The pressure of the polyether component is 0.3 MPa, the pressure of the black component is 0.37 MPa, and the polyurethane application rate is 770 g / m³. 2 The mass ratio of polyether to black material is 1:1.3. In this embodiment, the distance between the adhesive application position and the fabric application position is set at 1.5m. The adhesive and fabric are applied at a speed of 4m / min. When the adhesive application position reaches the fabric application position, the adhesive is just beginning to string. The magnesium substrate coated with polyurethane foam and the decorative board are fed into the laminator for lamination. The lamination pressure is 0.1Mpa, the lamination temperature is 55℃, and the holding time is 170s.

[0114] S3, Maturation

[0115] After lamination, the board with polyurethane foam is cured at 55℃ for 10 minutes to obtain polyurethane insulation decorative board.

[0116] Example 6

[0117] The raw materials used in this embodiment are as follows, by mass parts: Component A of the adhesive includes 20 parts YD-303, 30 parts YD-307, 50 parts YD-3152, 8 parts propylene carbonate, 5 parts diethylene glycol, 1.5 parts Momentive L6900, and 2.8 parts catalyst A33; Component B of the adhesive is Wanhua PM-200 polyphenylene polymethylene polyisocyanate; and the mass ratio of component A to component B is 1:1.05.

[0118] The polyurethane foam used includes:

[0119] The polyether composition is as follows: 50 parts general-purpose sucrose polyether polyol YD-4110, 50 parts polyester polyol YD-9400, 20 parts TCPP (trichloropropyl phosphate), 15 parts TEP (triethyl phosphate), 0.3 parts PC-5 (pentamethyldiethylenetriamine), 1.6 parts KAC (potassium acetate diethylene glycol), 3 parts Momentive L6900, 2 parts A33, 17 parts physical foaming agent CP (cyclopentane), and 2.4 parts water. These components are added to a container according to the formula ratio and stirred for 20 minutes until the materials are uniformly mixed. The preparation is now complete.

[0120] Negative News: Wanhua's PM-200

[0121] Polyurethane is produced by mixing polyether and black material at a mass ratio of 1:1.3 using a foaming machine.

[0122] The substrate used in this embodiment is a magnesium oxysulfate substrate (purchased from Zhangjiagang Huiyang Building Materials Co., Ltd., item number WY-LYMG-004);

[0123] The decorative layer is made of aluminum foil; the specific experimental steps are as follows:

[0124] S1, glue on substrate

[0125] Wipe the substrate surface, lay the substrate flat on the mold bed, mix component A and component B of the adhesive, apply the evenly mixed adhesive to the upper surface of the substrate, and spread it evenly with a roller. The ambient temperature, material temperature, and magnesium oxysulfate substrate temperature are all 30℃ during adhesive application. The adhesive application amount is controlled at 120-140g / m². 2 ;

[0126] S2, Injection Foaming

[0127] The polyether component of the polyurethane is injected into a foaming machine for mixing. When the adhesive thickness on the surface of the magnesium substrate reaches 1-2 mm and is in a stringy state (at this point, the adhesive viscosity is in the range of 1000~1500 mPa·s), the polyurethane foam material is applied to the adhesive-coated magnesium substrate using the foaming machine. The pressure of the polyether component is 0.3 MPa, the pressure of the black component is 0.37 MPa, and the polyurethane application rate is 770 g / m³. 2 The mass ratio of polyether to black material is 1:1.3. In this embodiment, the distance between the adhesive application position and the fabric application position is set at 1.5m. The adhesive and fabric are applied at a speed of 4m / min. When the adhesive application position reaches the fabric application position, the adhesive is just beginning to string. The magnesium substrate coated with polyurethane foam and the decorative board are fed into the laminator for lamination. The lamination pressure is 0.1Mpa, the lamination temperature is 55℃, and the holding time is 170s.

[0128] S3, Maturation

[0129] After lamination, the board with polyurethane foam is cured at 55℃ for 10 minutes to obtain polyurethane insulation decorative board.

[0130] Comparative Example 1

[0131] Compared with Example 1, the difference is that the polyurethane insulation decorative panel in Comparative Document 1 does not use glue during the preparation process; the other steps are the same as in Example 1, and the resulting material photographs are as follows. Figure 2 As shown, there are obvious air bubbles between the magnesium substrate and the polyurethane foam material.

[0132] Comparative Example 2

[0133] Compared with Example 1, the difference lies in that the polyurethane insulation decorative board in Comparative Document 2 uses an equal mass of waterproof interface agent (purchased from Beijing Oriental Yuhong Waterproof Technology Co., Ltd.) instead of glue in the preparation process. Other steps are the same as in Example 1, and the resulting material photographs are as follows. Figure 3 As shown, there are obvious air bubbles between the magnesium substrate and the polyurethane foam material.

[0134] Comparative Example 3

[0135] Compared with Example 1, the difference lies in that the polyurethane insulation decorative panel in Comparative Document 3 uses an equal mass of exterior wall waterproof coating (purchased from Beijing Oriental Yuhong Waterproof Technology Co., Ltd., product number HCA123) instead of glue in the preparation process. Other steps are the same as in Example 1, and the resulting material photographs are as follows. Figure 4 As shown, there are obvious air bubbles between the magnesium substrate and the polyurethane foam material.

[0136] Comparative Example 4

[0137] The raw materials used in this comparative example are as follows: Component A of the adhesive includes 20 parts YD-303, 30 parts YD-307, 50 parts YD-3152, 8 parts propylene carbonate, 5 parts ethylenediamine, 1.5 parts Momentive L6900, and 2.8 parts catalyst A33. Component B of the adhesive is Wanhua PM-200 polyphenylene polymethylene polyisocyanate. The mass ratio of component A to component B is 1:1.

[0138] The polyurethane foam used includes:

[0139] The polyether composition is as follows: 50 parts general-purpose sucrose polyether polyol YD-4110, 50 parts polyester polyol YD-9400, 20 parts TCPP (trichloropropyl phosphate), 15 parts TEP (triethyl phosphate), 0.3 parts PC-5 (pentamethyldiethylenetriamine), 1.6 parts KAC (potassium acetate diethylene glycol), 3 parts Momentive L6900, 2 parts A33, 17 parts physical foaming agent CP (cyclopentane), and 2.4 parts water. These components are added to a container according to the formula ratio and stirred for 20 minutes until the materials are uniformly mixed. The preparation is now complete.

[0140] Negative News: Wanhua's PM-200

[0141] Polyurethane is produced by mixing polyether and black material at a mass ratio of 1:1.3 using a foaming machine.

[0142] The substrate used in this embodiment is a magnesium oxysulfate substrate (purchased from Zhangjiagang Huiyang Building Materials Co., Ltd., item number WY-LYMG-004);

[0143] The decorative layer is made of aluminum foil; the specific experimental steps are as follows:

[0144] S1, glue on substrate

[0145] Wipe the substrate surface, lay the substrate flat on the mold bed, mix component A and component B of the adhesive, apply the evenly mixed adhesive to the upper surface of the substrate, and spread it evenly with a roller. The ambient temperature, material temperature, and magnesium oxysulfate substrate temperature are all 30℃ during adhesive application. The adhesive application amount is controlled at 120-140g / m². 2 ;

[0146] S2, Injection Foaming

[0147] The polyether component of the polyurethane is injected into a foaming machine for mixing. When the adhesive thickness on the surface of the magnesium substrate reaches 1-2 mm and is in a stringy state (at this point, the adhesive viscosity is in the range of 1000~1500 mPa·s), the polyurethane foam material is applied to the adhesive-coated magnesium substrate using the foaming machine. The pressure of the polyether component is 0.3 MPa, the pressure of the black component is 0.37 MPa, and the polyurethane application rate is 770 g / m³. 2 The mass ratio of polyether to black material is 1:1.3. In this embodiment, the distance between the adhesive application position and the fabric application position is set at 1.5m. The adhesive and fabric are applied at a speed of 4m / min. When the adhesive application position reaches the fabric application position, the adhesive is just beginning to string. The magnesium substrate coated with polyurethane foam and the decorative board are fed into the laminator for lamination. The lamination pressure is 0.1Mpa, the lamination temperature is 55℃, and the holding time is 170s.

[0148] S3, Maturation

[0149] After lamination, the board with polyurethane foam is cured at 55℃ for 10 minutes to obtain polyurethane insulation decorative board.

[0150] Comparative Example 5

[0151] The raw materials used in this comparative example are in parts by mass. Component A of the adhesive includes 20 parts YD-303, 30 parts YD-307, 50 parts YD-3152, 8 parts propylene carbonate, 5 parts diethylene glycol, 1.5 parts Momentive L6900, and 2.8 parts catalyst A33. Component B of the adhesive is Wanhua PM-400. The mass ratio of component A to component B is 1:1.

[0152] The polyurethane foam used includes:

[0153] The polyether composition is as follows: 50 parts general-purpose sucrose polyether polyol YD-4110, 50 parts polyester polyol YD-9400, 20 parts TCPP (trichloropropyl phosphate), 15 parts TEP (triethyl phosphate), 0.3 parts PC-5 (pentamethyldiethylenetriamine), 1.6 parts KAC (potassium acetate diethylene glycol), 3 parts Momentive L6900, 2 parts A33, 17 parts physical foaming agent CP (cyclopentane), and 2.4 parts water. These components are added to a container according to the formula ratio and stirred for 20 minutes until the materials are uniformly mixed. The preparation is now complete.

[0154] Negative News: Wanhua's PM-200

[0155] Polyurethane is produced by mixing polyether and black material at a mass ratio of 1:1.3 using a foaming machine.

[0156] The substrate used in this embodiment is a magnesium oxysulfate substrate (purchased from Zhangjiagang Huiyang Building Materials Co., Ltd., item number WY-LYMG-004);

[0157] The decorative layer is made of aluminum foil; the specific experimental steps are as follows:

[0158] S1, glue on substrate

[0159] Wipe the substrate surface, lay the substrate flat on the mold bed, mix component A and component B of the adhesive, apply the evenly mixed adhesive to the upper surface of the substrate, and spread it evenly with a roller. The ambient temperature, material temperature, and magnesium oxysulfate substrate temperature are all 30℃ during adhesive application. The adhesive application amount is controlled at 120-140g / m². 2 ;

[0160] S2, Injection Foaming

[0161] The polyether component of the polyurethane is injected into a foaming machine for mixing. When the adhesive thickness on the surface of the magnesium substrate reaches 1-2 mm and is in a stringy state (at this point, the adhesive viscosity is in the range of 1000~1500 mPa·s), the polyurethane foam material is applied to the adhesive-coated magnesium substrate using the foaming machine. The pressure of the polyether component is 0.3 MPa, the pressure of the black component is 0.37 MPa, and the polyurethane application rate is 770 g / m³. 2 The mass ratio of polyether to black material is 1:1.3. In this embodiment, the distance between the adhesive application position and the fabric application position is set at 1.5m. The adhesive and fabric are applied at a speed of 4m / min. When the adhesive application position reaches the fabric application position, the adhesive is just beginning to string. The magnesium substrate coated with polyurethane foam and the decorative board are fed into the laminator for lamination. The lamination pressure is 0.1Mpa, the lamination temperature is 55℃, and the holding time is 170s.

[0162] S3, Maturation

[0163] After lamination, the board with polyurethane foam is cured at 55℃ for 10 minutes to obtain polyurethane insulation decorative board.

[0164] Comparative Example 6

[0165] The raw materials used in this comparative example are in parts by mass. Component A of the adhesive includes 20 parts YD-303, 30 parts YD-307, 50 parts YD-3152, 8 parts propylene carbonate, 5 parts diethylene glycol, 1.5 parts Momentive L6900, and 2.8 parts catalyst A33. Component B of the adhesive is Wanhua MDI-50. The mass ratio of component A to component B is 1:1.

[0166] The polyurethane foam used includes:

[0167] The polyether composition is as follows: 50 parts general-purpose sucrose polyether polyol YD-4110, 50 parts polyester polyol YD-9400, 20 parts TCPP (trichloropropyl phosphate), 15 parts TEP (triethyl phosphate), 0.3 parts PC-5 (pentamethyldiethylenetriamine), 1.6 parts KAC (potassium acetate diethylene glycol), 3 parts Momentive L6900, 2 parts A33, 17 parts physical foaming agent CP (cyclopentane), and 2.4 parts water. These components are added to a container according to the formula ratio and stirred for 20 minutes until the materials are uniformly mixed. The preparation is now complete.

[0168] Negative News: Wanhua's PM-200

[0169] Polyurethane is produced by mixing polyether and black material at a mass ratio of 1:1.3 using a foaming machine.

[0170] The substrate used in this embodiment is a magnesium oxysulfate substrate (purchased from Zhangjiagang Huiyang Building Materials Co., Ltd., item number WY-LYMG-004);

[0171] The decorative layer is made of aluminum foil; the specific experimental steps are as follows:

[0172] S1, glue on substrate

[0173] Wipe the substrate surface, lay the substrate flat on the mold bed, mix component A and component B of the adhesive, apply the evenly mixed adhesive to the upper surface of the substrate, and spread it evenly with a roller. The ambient temperature, material temperature, and magnesium oxysulfate substrate temperature are all 30℃ during adhesive application. The adhesive application amount is controlled at 120-140g / m². 2 ;

[0174] S2, Injection Foaming

[0175] The polyether component of the polyurethane is injected into a foaming machine for mixing. When the adhesive thickness on the surface of the magnesium substrate reaches 1-2 mm and is in a stringy state (at this point, the adhesive viscosity is in the range of 1000~1500 mPa·s), the polyurethane foam material is applied to the adhesive-coated magnesium substrate using the foaming machine. The pressure of the polyether component is 0.3 MPa, the pressure of the black component is 0.37 MPa, and the polyurethane application rate is 770 g / m³. 2 The mass ratio of polyether to black material is 1:1.3. In this embodiment, the distance between the adhesive application position and the fabric application position is set at 1.5m. The adhesive and fabric are applied at a speed of 4m / min. When the adhesive application position reaches the fabric application position, the adhesive is just beginning to string. The magnesium substrate coated with polyurethane foam and the decorative board are fed into the laminator for lamination. The lamination pressure is 0.1Mpa, the lamination temperature is 55℃, and the holding time is 170s.

[0176] S3, Maturation

[0177] After lamination, the board with polyurethane foam is cured at 55℃ for 10 minutes to obtain polyurethane insulation decorative board.

[0178] Comparative Example 7

[0179] The raw materials used in this comparative example are in parts by mass. Component A of the adhesive includes 45 parts YD-303, 45 parts YD-307, 10 parts YD-3152, 8 parts propylene carbonate, 5 parts diethylene glycol, 1.5 parts Momentive L6900, and 2.8 parts catalyst A33. Component B of the adhesive is Wanhua PM-200 polyphenylene polymethylene polyisocyanate. The mass ratio of component A to component B is 1:1.

[0180] The polyurethane foam used includes:

[0181] The polyether composition is as follows: 50 parts general-purpose sucrose polyether polyol YD-4110, 50 parts polyester polyol YD-9400, 20 parts TCPP (trichloropropyl phosphate), 15 parts TEP (triethyl phosphate), 0.3 parts PC-5 (pentamethyldiethylenetriamine), 1.6 parts KAC (potassium acetate diethylene glycol), 3 parts Momentive L6900, 2 parts A33, 17 parts physical foaming agent CP (cyclopentane), and 2.4 parts water. These components are added to a container according to the formula ratio and stirred for 20 minutes until the materials are uniformly mixed. The preparation is now complete.

[0182] Negative News: Wanhua's PM-200

[0183] Polyurethane is produced by mixing polyether and black material at a mass ratio of 1:1.3 using a foaming machine.

[0184] The substrate used in this embodiment is a magnesium oxysulfate substrate (purchased from Zhangjiagang Huiyang Building Materials Co., Ltd., item number WY-LYMG-004);

[0185] The decorative layer is made of aluminum foil; the specific experimental steps are as follows:

[0186] S1, glue on substrate

[0187] Wipe the substrate surface, lay the substrate flat on the mold bed, mix component A and component B of the adhesive, apply the evenly mixed adhesive to the upper surface of the substrate, and spread it evenly with a roller. The ambient temperature, material temperature, and magnesium oxysulfate substrate temperature are all 30℃ during adhesive application. The adhesive application amount is controlled at 120-140g / m². 2 ;

[0188] S2, Injection Foaming

[0189] The polyether component of the polyurethane is injected into a foaming machine for mixing. When the adhesive thickness on the surface of the magnesium substrate reaches 1-2 mm and is in a stringy state (at this point, the adhesive viscosity is in the range of 1000~1500 mPa·s), the polyurethane foam material is applied to the adhesive-coated magnesium substrate using the foaming machine. The pressure of the polyether component is 0.3 MPa, the pressure of the black component is 0.37 MPa, and the polyurethane application rate is 770 g / m³. 2 The mass ratio of polyether to black material is 1:1.3. In this embodiment, the distance between the adhesive application position and the fabric application position is set at 1.5m. The adhesive and fabric are applied at a speed of 4m / min. When the adhesive application position reaches the fabric application position, the adhesive is just beginning to string. The magnesium substrate coated with polyurethane foam and the decorative board are fed into the laminator for lamination. The lamination pressure is 0.1Mpa, the lamination temperature is 55℃, and the holding time is 170s.

[0190] S3, Maturation

[0191] After lamination, the board with polyurethane foam is cured at 55℃ for 10 minutes to obtain polyurethane insulation decorative board.

[0192] Comparative Example 8

[0193] The raw materials used in this comparative example are in parts by mass. Component A of the adhesive includes 50 parts YD-303, 50 parts YD-3152, 8 parts propylene carbonate, 5 parts diethylene glycol, 1.5 parts Momentive L6900, and 2.8 parts catalyst A33. Component B of the adhesive is Wanhua PM-200 polyphenylene polymethylene polyisocyanate. The mass ratio of component A to component B is 1:1.

[0194] The polyurethane foam used includes:

[0195] The polyether composition is as follows: 50 parts general-purpose sucrose polyether polyol YD-4110, 50 parts polyester polyol YD-9400, 20 parts TCPP (trichloropropyl phosphate), 15 parts TEP (triethyl phosphate), 0.3 parts PC-5 (pentamethyldiethylenetriamine), 1.6 parts KAC (potassium acetate diethylene glycol), 3 parts Momentive L6900, 2 parts A33, 17 parts physical foaming agent CP (cyclopentane), and 2.4 parts water. These components are added to a container according to the formula ratio and stirred for 20 minutes until the materials are uniformly mixed. The preparation is now complete.

[0196] Negative News: Wanhua's PM-200

[0197] Polyurethane is produced by mixing polyether and black material at a mass ratio of 1:1.3 using a foaming machine.

[0198] The substrate used in this embodiment is a magnesium oxysulfate substrate (purchased from Zhangjiagang Huiyang Building Materials Co., Ltd., item number WY-LYMG-004);

[0199] The decorative layer is made of aluminum foil; the specific experimental steps are as follows:

[0200] S1, glue on substrate

[0201] Wipe the substrate surface, lay the substrate flat on the mold bed, mix component A and component B of the adhesive, apply the evenly mixed adhesive to the upper surface of the substrate, and spread it evenly with a roller. The ambient temperature, material temperature, and magnesium oxysulfate substrate temperature are all 30℃ during adhesive application. The adhesive application amount is controlled at 120-140g / m². 2 ;

[0202] S2, Injection Foaming

[0203] The polyether component of the polyurethane is injected into a foaming machine for mixing. When the adhesive thickness on the surface of the magnesium substrate reaches 1-2 mm and is in a stringy state (at this point, the adhesive viscosity is in the range of 1000~1500 mPa·s), the polyurethane foam material is applied to the adhesive-coated magnesium substrate using the foaming machine. The pressure of the polyether component is 0.3 MPa, the pressure of the black component is 0.37 MPa, and the polyurethane application rate is 770 g / m³. 2 The mass ratio of polyether to black material is 1:1.3. In this embodiment, the distance between the adhesive application position and the fabric application position is set at 1.5m. The adhesive and fabric are applied at a speed of 4m / min. When the adhesive application position reaches the fabric application position, the adhesive is just beginning to string. The magnesium substrate coated with polyurethane foam and the decorative board are fed into the laminator for lamination. The lamination pressure is 0.1Mpa, the lamination temperature is 55℃, and the holding time is 170s.

[0204] S3, Maturation

[0205] After lamination, the board with polyurethane foam is cured at 55℃ for 10 minutes to obtain polyurethane insulation decorative board.

[0206] Comparative Example 9

[0207] The raw materials used in this comparative example are in parts by mass. Component A of the adhesive includes 50 parts YD-307, 50 parts YD-3152, 8 parts propylene carbonate, 5 parts diethylene glycol, 1.5 parts Momentive L6900, and 2.8 parts catalyst A33. Component B of the adhesive is Wanhua PM-200 polyphenylene polymethylene polyisocyanate. The mass ratio of component A to component B is 1:1.

[0208] The polyurethane foam used includes:

[0209] The polyether composition is as follows: 50 parts general-purpose sucrose polyether polyol YD-4110, 50 parts polyester polyol YD-9400, 20 parts TCPP (trichloropropyl phosphate), 15 parts TEP (triethyl phosphate), 0.3 parts PC-5 (pentamethyldiethylenetriamine), 1.6 parts KAC (potassium acetate diethylene glycol), 3 parts Momentive L6900, 2 parts A33, 17 parts physical foaming agent CP (cyclopentane), and 2.4 parts water. These components are added to a container according to the formula ratio and stirred for 20 minutes until the materials are uniformly mixed. The preparation is now complete.

[0210] Negative News: Wanhua's PM-200

[0211] Polyurethane is produced by mixing polyether and black material at a mass ratio of 1:1.3 using a foaming machine.

[0212] The substrate used in this embodiment is a magnesium oxysulfate substrate (purchased from Zhangjiagang Huiyang Building Materials Co., Ltd., item number WY-LYMG-004);

[0213] The decorative layer is made of aluminum foil; the specific experimental steps are as follows:

[0214] S1, glue on substrate

[0215] Wipe the substrate surface, lay the substrate flat on the mold bed, mix component A and component B of the adhesive, apply the evenly mixed adhesive to the upper surface of the substrate, and spread it evenly with a roller. The ambient temperature, material temperature, and magnesium oxysulfate substrate temperature are all 30℃ during adhesive application. The adhesive application amount is controlled at 120-140g / m². 2 ;

[0216] S2, Injection Foaming

[0217] The polyether component of the polyurethane is injected into a foaming machine for mixing. When the adhesive thickness on the surface of the magnesium substrate reaches 1-2 mm and is in a stringy state (at this point, the adhesive viscosity is in the range of 1000~1500 mPa·s), the polyurethane foam material is applied to the adhesive-coated magnesium substrate using the foaming machine. The pressure of the polyether component is 0.3 MPa, the pressure of the black component is 0.37 MPa, and the polyurethane application rate is 770 g / m³. 2 The mass ratio of polyether to black material is 1:1.3. In this embodiment, the distance between the adhesive application position and the fabric application position is set at 1.5m. The adhesive and fabric are applied at a speed of 4m / min. When the adhesive application position reaches the fabric application position, the adhesive is just beginning to string. The magnesium substrate coated with polyurethane foam and the decorative board are fed into the laminator for lamination. The lamination pressure is 0.1Mpa, the lamination temperature is 55℃, and the holding time is 170s.

[0218] S3, Maturation

[0219] After lamination, the board with polyurethane foam is cured at 55℃ for 10 minutes to obtain polyurethane insulation decorative board.

[0220] Example of effect

[0221] The decorative layer of the polyurethane insulation decorative board prepared in Examples 1-6 and Comparative Examples 1-9 was scraped off with a scraper, ensuring that the polyurethane insulation decorative board was undamaged after the decorative layer was scraped off, and the substrate to be tested was obtained. The bonding strength of the material was determined by the method described in JG / T 287. The insulation decorative board prepared in Examples 1-6 and Comparative Examples 1-9 of this invention belongs to Type I, and the bonding strength is shown in Table 1.

[0222] After the thermal insulation decorative panel was molded for 72 hours, polyurethane thermal insulation decorative panels without a decorative layer, corresponding to the polyurethane thermal insulation decorative panels in Examples 1-6 and Comparative Examples 1-9, were prepared using the same method. Weather resistance tests were then conducted, involving five heating-freezing cycles: each cycle included heating the sample in air at 50°C for 8 hours, followed by freezing in air at -20°C for 16 hours. Bond strength was then tested, and the results are shown in Table 1.

[0223] Table 1

[0224]

[0225] The results show that the polyurethane thermal insulation decorative board prepared by the method described in this application has good bonding strength and weather resistance.

[0226] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A polyurethane adhesive, characterized in that, It includes component A and component B: Component A is composed of the following raw materials in parts by weight: 15-35 parts polyether polyol I, 15-35 parts polyether polyol II, 30-60 parts polyester polyol, 1-3 parts foam stabilizer, 1-5 parts catalyst, 5-20 parts viscosity reducer, and 3-10 parts diethylene glycol. Component B of the adhesive is Wanhua PM-200; The mass ratio of component A to component B of the adhesive is 1:0.95-1.05; The polyether polyol I in the adhesive component has a functionality of 3, a hydroxyl value of 455-495 mg KOH / g, and a viscosity of 420-520 mPa.s at 25°C. The polyether polyol II has a functionality of 3, a hydroxyl value of 230-250 mg KOH / g, and a viscosity of 220-280 mPa.s at 25°C. The polyester polyol has a functionality of 2, a hydroxyl value of 300-330 mg KOH / g, and a viscosity of 2000-3000 mPa.s at 25°C.

2. The polyurethane adhesive according to claim 1, characterized in that, The adhesive components include polyether polyol I (YD-303), polyether polyol II (YD-307), polyester polyol (YD-3152), foam stabilizer (organosilicon surfactant), and catalyst (tertiary amine catalyst).

3. The polyurethane adhesive according to claim 1, characterized in that, Viscosity reducers are selected from propylene carbonate and / or TCPP; The foaming agent is Momentive L6900 and / or MetHyper 8900; The catalyst is Hejia Chemical A33 and / or Hejia Chemical PC-15.

4. The polyurethane adhesive according to claim 1, wherein component A of the adhesive comprises the following components in parts by weight: 15-35 parts YD-303, 15-35 parts YD-307, 30-60 parts YD-3152, 5-20 parts propylene carbonate, 3-10 parts diethylene glycol, 1-3 parts Momentive L6900, and 1-5 parts catalyst A33; The mass ratio of component A to component B of the adhesive is 1:

1.

5. A method for continuously producing polyurethane thermal insulation decorative panels based on magnesium substrates using the adhesive according to any one of claims 1-4, characterized in that, The polyurethane insulation decorative panel comprises a magnesium substrate, an adhesive layer, a polyurethane layer, and a decorative layer, and is prepared through the following steps: S1, glue on substrate A magnesium substrate is laid flat on a mold bed. Component A of the adhesive described in any one of claims 1-4 is mixed evenly and then mixed evenly with component B. The evenly mixed adhesive is then evenly applied to the upper surface of the magnesium substrate. S2, Injection Foaming Polyurethane raw materials are injected into a foaming machine for mixing. When the viscosity of the adhesive on the upper surface of the magnesium substrate in S1 is 1000~1500 mpa·s, polyurethane foam is applied to the magnesium substrate coated with adhesive. The magnesium substrate coated with polyurethane foam and the decorative board are then fed into a laminator for lamination. S3, Maturation The laminated board is cured at 50-60℃ for 8-12 minutes to obtain polyurethane insulation decorative board.

6. The method according to claim 5, characterized in that, The magnesium substrate is a glass magnesium board or a magnesium oxysulfate board.

7. The method according to claim 5, characterized in that, In the substrate adhesive application step, the ambient temperature is 28-32℃, the substrate temperature is 28-30℃, the magnesium substrate temperature is 28-32℃, and the adhesive application rate is 120-140g / m². 2 .

8. A polyurethane insulation decorative panel based on a magnesium substrate produced by a method for continuous production of a polyurethane insulation decorative panel based on a magnesium substrate as described in any one of claims 5-7.

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