Insulation and decoration integrated plate with multi-layer fixed structure and preparation process of insulation and decoration integrated plate

Abstract

The invention relates to the technical field of building materials, in particular to a multi-layer fixed structure heat preservation and decoration integrated plate and a preparation process thereof. The invention overcomes the problem of poor durability of the thermal insulation and decoration integrated plate. During preparation, the heat preservation layer, the protection layer, the decoration layer and the bonding layer solution are prepared firstly, then the bonding layer solution is smeared on the heat preservation layer, the protection layer is placed on the heat preservation layer, the bonding layer solution is smeared on the protection layer again, the decoration layer is placed on the protection layer, finally, the whole is subjected to hot pressing and cooling, and the heat preservation and decoration integrated plate is obtained. The composite active agent and the modified flame retardant are added into the thermal insulation layer to improve the thermal stability of the integrated board; a modified dispersing agent, a composite foaming agent and a composite waterproof agent are added into the protective layer to improve the mechanical property of the integrated board; a modified antioxidant and a composite antibacterial agent are added into the decorative layer to improve the stain resistance of the integrated plate; and a modified adhesive and a composite curing agent are added into the bonding layer to improve the bonding strength between the layers, and finally the durability of the integrated board is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, in particular to a multi-layer fixed structure thermal insulation and decorative integrated board and a preparation process thereof. Background Art

[0002] As global energy issues become increasingly prominent, building energy conservation has become an important direction for the development of the construction industry. The traditional construction method of building insulation and decoration usually involves the construction of the insulation layer first and then the decoration layer. This step-by-step construction method has many problems, such as long construction period and poor adhesion between the insulation and decoration layers. Modern buildings not only require good functional use, but also have high requirements for appearance. Traditional building decoration materials often have certain advantages in aesthetics, but are insufficient in functionality such as insulation; and pure insulation materials are difficult to meet the needs of building exterior decoration.

[0003] The thermal insulation and decorative integrated panels integrate thermal insulation and decorative functions, which can effectively improve the thermal insulation performance of the building, meet the requirements of building energy conservation, and simplify the construction process. The thermal insulation and decorative integrated panels can provide decorative surface layers of various colors, textures and shapes according to different architectural design requirements, such as imitation stone, imitation brick, metal texture, etc., so that the building can have rich decorative effects while realizing the thermal insulation function, achieving the perfect unity of beauty and function.

[0004] The traditional construction method of separating insulation and decoration is prone to quality problems such as the shedding of the insulation layer and the cracking of the decoration layer due to problems such as the bonding performance and waterproof performance between the insulation layer and the decoration layer, which affects the service life and safety of the building. The insulation and decoration integrated board is produced in a standardized manner in the factory, and the insulation layer and the decoration layer are hot-pressed into a whole, which can improve the quality and durability of the integrated board and reduce the subsequent maintenance costs. However, the overall performance of the integrated board is still poor and needs further improvement.

[0005] In summary, today's thermal insulation and decorative integrated panels still have the shortcomings of poor bonding between the insulation layer and the decorative layer and poor impact resistance, which leads to poor durability of the thermal insulation and decorative integrated panels and limits their development in the construction industry.

[0006] To this end, a multi-layer fixed structure thermal insulation and decorative integrated panel and a preparation process thereof are proposed. Summary of the invention

[0007] The purpose of the present invention is to design a multi-layer fixed structure thermal insulation decorative integrated board and its preparation process. The thermal insulation decorative integrated board includes a thermal insulation layer, a protective layer, a decorative layer and an adhesive layer. First, the thermal insulation layer, the protective layer, the decorative layer and the adhesive layer solution are prepared respectively, then the adhesive layer liquid is applied on the thermal insulation layer, and then the protective layer is placed. The adhesive layer liquid is applied again on the protective layer, and the decorative layer is placed. Finally, the whole is hot pressed and cooled to obtain a thermal insulation decorative integrated board. The present invention improves the thermal stability of the integrated board by adding a composite active agent and a modified flame retardant to the thermal insulation layer; improves the impact resistance of the integrated board by adding a modified dispersant, a composite foaming agent and a composite waterproofing agent to the protective layer; improves the stain resistance of the integrated board by adding a modified antioxidant and a composite antibacterial agent to the decorative layer; and improves the bonding strength between layers by adding a modified adhesive and a composite curing agent to the adhesive layer, thereby finally improving the durability of the integrated board.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] On one hand, the present invention provides a multi-layer fixed structure thermal insulation and decoration integrated board, the thermal insulation and decoration integrated board comprises a thermal insulation layer, a protective layer, a decorative layer and an adhesive layer;

[0010] The thermal insulation layer includes 15 parts of rock wool, 8 parts of polystyrene, 6 parts of phenolic resin, 1-3 parts of composite active agent and 0.5-0.9 parts of modified flame retardant; the modified flame retardant includes triphenyl phosphate and melamine cyanurate;

[0011] The protective layer includes 20 parts of fly ash, 10 parts of silica fume, 2-3 parts of modified dispersant, 0.6-0.8 parts of composite foaming agent and 0.1-0.3 parts of composite waterproofing agent; the modified dispersant includes sodium tripolyphosphate, maleic anhydride and benzoyl peroxide;

[0012] The decorative layer includes 8 parts of colored aggregate, 12 parts of polyethylene wax, 0.5-0.7 parts of modified antioxidant, 0.3-0.5 parts of composite antibacterial agent and 6 parts of polyurethane; the modified antioxidant includes silane coupling agent KH-570, nano titanium dioxide and polylactic acid;

[0013] The bonding layer includes 8-10 parts of modified adhesive, 2 parts of glass fiber, 2-4 parts of composite curing agent and 1 part of hydroxypropyl methylcellulose; the modified adhesive includes epoxy resin E-44 and diethylenetriamine.

[0014] Preferably, the composite active agent is obtained by mixing triethanolamine, sodium dodecylbenzene sulfonate and stearic acid, and the weight ratio of triethanolamine, sodium dodecylbenzene sulfonate and stearic acid is 3-5:1:1.

[0015] Preferably, the composite foaming agent is obtained by mixing azodicarbonamide and n-pentane, and the weight ratio of azodicarbonamide to n-pentane is 1-3:1; the composite waterproofing agent is obtained by mixing sodium methyl silicate and polysiloxane, and the weight ratio of sodium methyl silicate to polysiloxane is 2-4:2.

[0016] Preferably, the colored aggregate is colored quartz sand; the composite antibacterial agent is obtained by mixing nano zinc oxide, polyhexamethylene guanidine hydrochloride and dodecyl dimethyl benzyl ammonium chloride, and the weight ratio of nano zinc oxide, polyhexamethylene guanidine hydrochloride and dodecyl dimethyl benzyl ammonium chloride is 2-6:2:1.

[0017] Preferably, the composite curing agent is a mixture of m-phenylenediamine, ethylenediamine and methyltetrahydrophthalic anhydride, and the weight ratio of m-phenylenediamine, ethylenediamine and methyltetrahydrophthalic anhydride is 1-3:2:1.

[0018] Another aspect of the present invention provides a preparation process of a multi-layer fixed structure thermal insulation decorative integrated board, the preparation process comprising the following steps:

[0019] S1: 15 parts of rock wool, 8 parts of polystyrene, 6 parts of phenolic resin, 1-3 parts of composite active agent and 0.5-0.9 parts of modified flame retardant are mixed and stirred for 2 hours, poured into a mold, cured at room temperature for 8 hours, and demolded to obtain an insulation layer;

[0020] S2: 20 parts of fly ash, 10 parts of silica fume, 2-3 parts of modified dispersant, 0.6-0.8 parts of composite foaming agent and 0.1-0.3 parts of composite waterproofing agent are mixed and stirred for 3 hours, then poured into the mold, cured at room temperature for 10 hours, and demolded to obtain a protective layer;

[0021] S3: 8 parts of colored aggregate, 12 parts of polyethylene wax, 0.5-0.7 parts of modified antioxidant, 0.3-0.5 parts of composite antibacterial agent and 6 parts of polyurethane are mixed and stirred for 2.5 hours, poured into the mold, cured at room temperature for 10 hours, and demolded to obtain a decorative layer;

[0022] S4: 8-10 parts of modified adhesive, 2 parts of glass fiber, 2-4 parts of composite curing agent and 1 part of hydroxypropyl methylcellulose are stirred for 4 hours to obtain a bonding layer solution;

[0023] S5 removes dust and debris from the insulation layer, protective layer and decorative layer, and then transports them to the assembly station through a conveyor belt;

[0024] S6: evenly apply half of the bonding layer solution on the insulation layer, place the protective layer, press to make it fit tightly, apply the remaining bonding layer solution on the protective layer, place the decorative layer, press to make it fit tightly, lay the surface paper on the decorative layer, and lay the bottom paper under the insulation layer to form a slab structure;

[0025] S7 sends the slab structure into a hot press, controls the temperature at 110°C-150°C, the pressure at 2MPa, and the hot pressing time at 10min-30min to obtain a semi-finished plate;

[0026] S8 places the semi-finished board in a temporary storage area for 2 hours to allow it to cool naturally, thereby obtaining a multi-layer fixed structure thermal insulation and decorative integrated board.

[0027] Preferably, the preparation method of the modified flame retardant is: put 4-6 parts of triphenyl phosphate into 10 parts of N,N-dimethylformamide, and stir at 60°C for 30 minutes to obtain solution A; put 3 parts of melamine cyanurate into 6 parts of N,N-dimethylformamide, and stir at 60°C for 20 minutes to obtain solution B; add solution A to solution B, continue stirring for 1h-3h, and obtain a mixture; distill the mixture to remove N,N-dimethylformamide, and dry the obtained solid to obtain the modified flame retardant.

[0028] Preferably, the preparation method of the modified dispersant is: add 20 parts of toluene into a four-necked flask, then add 6-8 parts of sodium tripolyphosphate and 5 parts of maleic anhydride, stir for 30 minutes, then add 2 parts of benzoyl peroxide, introduce nitrogen into the four-necked flask to remove the air in the reaction system, then heat to 70°C, stir and react for 6h-8h under nitrogen protection, after the reaction is completed, pour excess methanol into the four-necked flask, then wash the precipitated precipitate with ethanol several times, and then dry it in a vacuum drying oven at 60°C for 12h to obtain the modified dispersant.

[0029] Preferably, the preparation method of the modified antioxidant is as follows: 0.1 parts of silane coupling agent KH-570 is added to 10 parts of anhydrous ethanol, and stirred evenly to obtain a mixed solution A; 4-6 parts of nano titanium dioxide is added to the mixed solution A, ultrasonically dispersed for 45 minutes, and then reacted at 70°C for 3 hours under stirring conditions to obtain a mixed solution B; the mixed solution B is washed with anhydrous ethanol and dried at 60°C for 12 hours to obtain modified nano titanium dioxide; 0.5 parts of polylactic acid is added to 10 parts of dichloromethane, and stirred for 30 minutes to obtain a mixed solution C; the modified nano titanium dioxide is added to 10 parts of dichloromethane, and stirred for 30 minutes to obtain a mixed solution D; the mixed solution D is slowly added to the mixed solution C, and the stirring is continued for 2 hours to 4 hours to obtain a mixed solution E; the mixed solution E is naturally evaporated in a fume hood to evaporate the solvent, and then transferred to a vacuum drying oven, and dried at 60°C for 24 hours to obtain a modified antioxidant.

[0030] Preferably, the preparation method of the modified adhesive is: under stirring conditions, 10 parts of epoxy resin E-44, 0.8-1 parts of diethylenetriamine and 0.1 parts of propylene oxide butyl ether are added to a reaction container to obtain a mixture; the mixture is reacted at 80° C. for 4 hours, and the modified adhesive is obtained after the reaction is completed.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention improves the thermal stability of the integrated board by adding a composite active agent and a modified flame retardant to the insulation layer. Rock wool has a certain heat absorption effect and can achieve a thermal insulation effect. The modified flame retardant obtained by compounding can absorb a large amount of heat during the decomposition process, reduce the temperature of the insulation layer, prevent further heat transfer, and improve thermal stability; the composite active agent can improve the dispersibility of the modified flame retardant in the insulation layer, making it more evenly distributed in the insulation layer. The evenly dispersed flame retardant can quickly take effect when a fire occurs, suppress the combustion reaction in all directions, and improve the flame retardant effect, thereby better protecting the insulation layer and maintaining the thermal stability of the integrated board, thereby improving durability.

[0033] 2. The present invention improves the impact resistance of the integrated board by adding a modified dispersant, a composite foaming agent and a composite waterproofing agent to the protective layer. The modified dispersant synthesized by copolymerization modification can reduce the surface tension between various solid particles in the protective layer, so that they are evenly dispersed in the protective layer system. The evenly dispersed particles can better withstand external forces and avoid ruptures caused by local stress concentration. When the integrated board is impacted, the evenly dispersed particles can disperse the stress to the entire protective layer, enhancing the ability of the integrated board to resist impact; the modified dispersant helps the composite foaming agent and the composite waterproofing agent to be evenly dispersed in the protective layer and give full play to their effects. The pore structure formed by the composite foaming agent cooperates with the increased density of the composite waterproofing agent. While absorbing the impact energy, the strength of the protective layer is enhanced. The composite waterproofing agent prevents moisture from destroying the effects of the modified dispersant and the composite foaming agent, ensuring the stability of the entire protective system, thereby improving the impact resistance of the integrated board and the durability is also improved.

[0034] 3. The present invention improves the stain resistance of the integrated board by adding a modified antioxidant and a composite antibacterial agent to the decorative layer. The modified antioxidant prepared by mixing solutions can effectively capture free radicals generated on the surface of the decorative layer due to factors such as light and temperature changes, slow down or prevent the oxidation process of the decorative layer material, keep the surface of the decorative layer in a relatively stable chemical structure, reduce surface microscopic defects caused by oxidation, thereby reducing the attachment points of pollutants such as dust and stains, and improving stain resistance; the composite antibacterial agent reduces the damage of microorganisms to the decorative layer, avoids changes in the surface structure caused by microbial growth, helps the modified antioxidant to better exert its antioxidant effect, prevents surface oxidation, and improves the durability of the integrated board.

[0035] 4. The present invention improves the bonding strength between layers by adding modified adhesives and composite curing agents to the bonding layer. During the cross-linking modification process of the modified adhesive, the hydrogen atoms on the amine group attack the carbon atoms of the epoxy group, causing the epoxy group to open and form a new hydroxyl group. At the same time, the nitrogen atom of the amine group forms a chemical bond with the oxygen atom of the epoxy group to connect the two epoxy resin molecules. As the reaction proceeds, a large number of epoxy resin molecules are interconnected in this way, gradually forming a three-dimensional network structure, thereby improving the bonding; the modified adhesive provides good adhesion and flexibility, creating favorable conditions for the composite curing agent to play a role, so that the cross-linking reaction can proceed smoothly between the interfaces of the layers of materials in close contact; the composite curing agent enhances the cohesion and overall performance of the modified adhesive by promoting the cross-linking reaction, further consolidating the bonding effect between the modified adhesive and the layers of materials, and the durability of the integrated board is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a structural diagram of the multi-layer fixed structure thermal insulation and decorative integrated board of the present invention;

[0037] Figure 2 This is a graph of the tensile bond strength of Example 49 and Comparative Examples 21-28 of the present invention.

[0038] In the figure: 1. Decorative layer; 2. Adhesive layer; 3. Protective layer; 4. Thermal insulation layer. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Specific reference Figure 1 to Figure 2 The present invention provides a multi-layer fixed structure thermal insulation decorative integrated board and a preparation process thereof. The structure of the multi-layer fixed structure thermal insulation decorative integrated board is, from top to bottom, a decorative layer 1, an adhesive layer 2, a protective layer 3, an adhesive layer 2 and a thermal insulation layer 4. The technical scheme is as follows:

[0041] Example 1

[0042] Preparation of modified flame retardant:

[0043] 4-6 parts of triphenyl phosphate are put into 10 parts of N,N-dimethylformamide, and stirred at 60°C for 30 minutes to obtain solution A; 3 parts of melamine cyanurate are put into 6 parts of N,N-dimethylformamide, and stirred at 60°C for 20 minutes to obtain solution B; solution A is added to solution B, and stirring is continued for 1-3 hours to obtain a mixture; the mixture is distilled to remove N,N-dimethylformamide therein, and the obtained solid is dried to obtain a modified flame retardant.

[0044] Preparation of modified dispersant:

[0045] Add 20 parts of toluene into a four-necked flask, then add 6 parts of sodium tripolyphosphate and 5 parts of maleic anhydride, stir for 30 minutes, then add 2 parts of benzoyl peroxide, pass nitrogen into the four-necked flask to remove the air in the reaction system, then heat to 70°C, stir and react for 6 hours under nitrogen protection, after the reaction, pour excess methanol into the four-necked flask, then wash the precipitated precipitate with ethanol several times, and then dry it in a vacuum drying oven at 60°C for 12 hours to obtain a modified dispersant.

[0046] Preparation of modified antioxidants:

[0047] 0.1 parts of silane coupling agent KH-570 were added to 10 parts of anhydrous ethanol, and stirred evenly to obtain a mixed solution A; 4 parts of nano titanium dioxide were added to the mixed solution A, ultrasonically dispersed for 45 minutes, and then reacted at 70°C for 3 hours under stirring conditions to obtain a mixed solution B; the mixed solution B was washed with anhydrous ethanol and dried at 60°C for 12 hours to obtain a modified nano titanium dioxide; 0.5 parts of polylactic acid were added to 10 parts of dichloromethane, and stirred for 30 minutes to obtain a mixed solution C; the modified nano titanium dioxide was added to 10 parts of dichloromethane, and stirred for 30 minutes to obtain a mixed solution D; the mixed solution D was slowly added to the mixed solution C, and the stirring was continued for 2 hours to obtain a mixed solution E; the mixed solution E was naturally evaporated in a fume hood, and then transferred to a vacuum drying oven and dried at 60°C for 24 hours to obtain a modified antioxidant.

[0048] Preparation of modified adhesive:

[0049] Under stirring conditions, 10 parts of epoxy resin E-44, 0.8 parts of diethylenetriamine and 0.1 parts of propylene oxide butyl ether are added to a reaction container to obtain a mixture; the mixture is reacted at 80° C. for 4 hours, and the modified adhesive is obtained after the reaction is completed.

[0050] Preparation of thermal insulation and decorative integrated panels:

[0051] S1: 15 parts of rock wool, 8 parts of polystyrene, 6 parts of phenolic resin, 1-3 parts of composite active agent and 0.5-0.9 parts of modified flame retardant are mixed and stirred for 2 hours, poured into a mold, cured at room temperature for 8 hours, and demolded to obtain an insulation layer;

[0052] S2: 20 parts of fly ash, 10 parts of silica fume, 2 parts of modified dispersant, 0.6 parts of composite foaming agent and 0.1 parts of composite waterproofing agent are mixed and stirred for 3 hours, then poured into the mold, cured at room temperature for 10 hours, and demolded to obtain a protective layer;

[0053] S3: 8 parts of colored aggregate, 12 parts of polyethylene wax, 0.5 parts of modified antioxidant, 0.3 parts of composite antibacterial agent and 6 parts of polyurethane are mixed and stirred for 2.5 hours, and poured into the mold, cured at room temperature for 10 hours, and demolded to obtain a decorative layer;

[0054] S4: 8 parts of modified adhesive, 2 parts of glass fiber, 2 parts of composite curing agent and 1 part of hydroxypropyl methylcellulose are stirred for 4 hours to obtain a bonding layer solution;

[0055] S5 removes dust and debris on the thermal insulation layer, the protective layer and the decorative layer, and then transports them to the assembly station through a conveyor belt;

[0056] S6: evenly apply half of the bonding layer solution on the thermal insulation layer, place the protective layer, press to make it fit tightly, apply the remaining bonding layer solution on the protective layer, place the decorative layer, press to make it fit tightly, lay a surface layer of paper on the decorative layer, and lay a bottom layer of paper under the thermal insulation layer to form a slab structure;

[0057] S7: sending the slab structure into a hot press, controlling the temperature at 110° C., the pressure at 2 MPa, and the hot pressing time at 10 min to obtain a semi-finished plate;

[0058] S8: placing the semi-finished plate in a temporary storage area for 2 hours to allow it to cool naturally, thereby obtaining the multi-layer fixed structure thermal insulation and decorative integrated plate.

[0059] Example 2-11

[0060] Referring to the parameter conditions in Example 1, the specific differences are shown in Table 1.

[0061] Table 1 Parameter conditions of Examples 1-11

[0062]

[0063]

[0064] Comparative Example 1 refers to the parameter conditions in Example 1, except that only triethanolamine is used as the active agent.

[0065] Comparative Example 2 refers to the parameter conditions in Example 1, except that only sodium dodecylbenzene sulfonate is used as the active agent.

[0066] Comparative Example 3 refers to the parameter conditions in Example 1, except that only stearic acid is used as the active agent.

[0067] Comparative Example 4 refers to the parameter conditions in Example 1, except that no composite active agent is added.

[0068] Comparative Example 5 refers to the parameter conditions in Example 1, except that only triphenyl phosphate is used as the flame retardant.

[0069] Comparative Example 6 refers to the parameter conditions in Example 1, except that no modified flame retardant is added.

[0070] Example 12 Thermal Stability Test

[0071] A sample of a certain size is fixed vertically in a combustion tube. Under specified test conditions, a mixed flow of oxygen and nitrogen is introduced, the top of the sample is ignited, and the combustion characteristics of the sample are observed. Through tests under different oxygen concentrations, the minimum oxygen concentration required to just maintain the combustion of the sample is determined, and the limiting oxygen index is expressed as the volume percentage of oxygen. The maximum weight loss temperature of Examples 1-11 and Comparative Examples 1-6 is tested using a thermogravimetric analyzer, and the results are shown in Table 2.

[0072] Table 2 Thermal stability test of Examples 1-11 and Comparative Examples 1-6

[0073]

[0074]

[0075] It can be found from Table 2 that in Examples 1-5 and Comparative Examples 1-4, when only a single active agent is used, the thermal stability of the thermal insulation decorative integrated board is low, and when no composite active agent is added, the thermal stability of the thermal insulation decorative integrated board is significantly reduced; when the composite active agent is added in the embodiment, the thermal stability of the thermal insulation decorative integrated board is gradually improved. This is because the composite active agent can promote the optimization of the internal structure of the insulation layer, make the arrangement of the polystyrene molecular chains more regular, reduce internal defects and gaps, and form a denser microstructure. This structural optimization helps to reduce the heat conduction path and improve the thermal resistance of the insulation layer, thereby enhancing the thermal insulation performance of the insulation layer, reducing the transfer of heat in the insulation layer, maintaining the thermal stability of the integrated board, and thus improving durability. In Examples 6-11 and Comparative Examples 5-6, when only triphenyl phosphate is used as a flame retardant, the flame retardant effect of the thermal insulation decorative integrated board is poor, and when the modified flame retardant is not added, the thermal stability of the thermal insulation decorative integrated board is significantly reduced; in the embodiment, the modified flame retardant obtained by compounding is added, and the thermal stability of the thermal insulation decorative integrated board is significantly improved. This is because the modified flame retardant can be rapidly decomposed in a high temperature environment and release non-combustible gases. These gases can dilute the surrounding oxygen concentration and inhibit the combustion reaction. At the same time, a large amount of heat will be absorbed during the decomposition process, reducing the temperature of the insulation layer and preventing further heat transfer, thereby effectively preventing the thermal stability of the insulation layer from being destroyed due to combustion. There is also a synergistic effect between the composite active agent and the modified flame retardant in the insulation layer. The composite active agent can improve the dispersibility of the modified flame retardant in the insulation layer, making it more evenly distributed in the insulation layer. The uniformly dispersed flame retardant can quickly play a role when a fire occurs, suppress the combustion reaction in all directions, and improve the flame retardant effect, thereby better protecting the insulation layer and improving the durability of the integrated board.

[0076] Examples 13-26

[0077] Referring to the parameter conditions in Example 10, the difference is that the synthesis conditions and dosage of the modified dispersant and the dosage of the composite foaming agent and the composite waterproofing agent are changed. The specific parameters are shown in Table 3.

[0078] Table 3 Parameter conditions of Example 10 and Examples 13-26

[0079]

[0080]

[0081] Comparative Example 7 refers to the parameter conditions in Example 10, except that only sodium tripolyphosphate is used as the dispersant.

[0082] Comparative Example 8 refers to the parameter conditions in Example 10, except that no modified dispersant is added.

[0083] Comparative Example 9 refers to the parameter conditions in Example 10, except that only azodicarbonamide is used as the blowing agent.

[0084] Comparative Example 10 refers to the parameter conditions in Example 10, except that only n-pentane is used as the blowing agent.

[0085] Comparative Example 11 refers to the parameter conditions in Example 10, except that no composite foaming agent is added.

[0086] Comparative Example 12 refers to the parameter conditions in Example 10, except that only sodium methyl silicate is used as the waterproofing agent.

[0087] Comparative Example 13 refers to the parameter conditions in Example 10, except that only polysiloxane is used as the water repellent.

[0088] Comparative Example 14 refers to the parameter conditions in Example 10, except that no composite waterproofing agent is added.

[0089] Example 27 Impact resistance test

[0090] According to JGT 287-2013 thermal insulation decorative exterior wall external insulation system material standard, Example 10, Examples 13-26 and Comparative Examples 7-14 were tested for impact resistance, and the results are shown in Table 4.

[0091] Table 4 Impact resistance test of Example 10, Examples 13-26 and Comparative Examples 7-14

[0092]

[0093]

[0094] It can be found from Table 4 that in Example 10, Examples 13-18 and Comparative Examples 7-8, when only sodium tripolyphosphate is used as a dispersant, the impact resistance of the thermal insulation decorative integrated board is weak, and when no modified dispersant is added, the impact resistance of the integrated board is even worse; when the modified dispersant is added in the embodiment, the impact resistance of the thermal insulation decorative integrated board is significantly improved. This is because the modified dispersant synthesized by copolymerization modification can reduce the surface tension between various solid particles in the protective layer, so that they are evenly dispersed in the protective layer system, and the evenly dispersed particles can better withstand external forces and avoid rupture caused by local stress concentration. When the integrated board is impacted, the evenly dispersed particles can disperse the stress to the entire protective layer, thereby enhancing the ability of the integrated board to resist impact, and the durability of the integrated board is also improved. In Examples 19-22 and Comparative Examples 9-11, although a single foaming agent can improve the impact resistance of the integrated board, the performance is obviously not high. When the composite foaming agent is not added, the impact resistance of the integrated board is obviously poor. When the composite foaming agent is added in the examples, the impact resistance of the integrated board is significantly improved, because the composite foaming agent is decomposed by heat during the processing of the protective layer to release gas, thereby forming evenly distributed pores in the protective layer. These pores have a buffering effect. When the integrated board is impacted, the pores can absorb the impact energy, disperse the impact force through deformation and rupture of the pores, reduce damage to the overall structure of the integrated board, and improve the impact resistance. In Examples 23-26 and Comparative Examples 12-14, no composite waterproofing agent is added or only a single waterproofing agent is added, and the impact resistance of the integrated board is significantly lower than that of the embodiments; when the composite waterproofing agent is added in the embodiments, the impact resistance of the integrated board is significantly improved, because the effective ingredients in the composite waterproofing agent can chemically react with fly ash, silica ash and other components in the protective layer to generate insoluble substances, fill the pores and cracks in the protective layer, and increase the density of the protective layer. After the density is improved, the strength of the protective layer is enhanced. When the integrated board is impacted, the tighter structure can better resist external forces and reduce the generation and expansion of cracks, thereby improving the impact resistance of the integrated board. At the same time, the modified dispersant, composite foaming agent and composite waterproofing agent work together in the protective layer to jointly improve the performance of the integrated board; the modified dispersant helps the composite foaming agent and the composite waterproofing agent to be evenly dispersed in the protective layer to give full play to their functions; the pore structure formed by the composite foaming agent and the increased density of the composite waterproofing agent cooperate with each other to enhance the strength of the protective layer while absorbing impact energy; the composite waterproofing agent prevents moisture from destroying the effects of the modified dispersant and the composite foaming agent, thereby ensuring the stability of the entire protective system, extending the service life of the integrated board and improving durability.

[0095] Examples 28-37

[0096] Referring to the parameter conditions in Example 25, the difference is that the synthesis conditions and dosage of the modified antioxidant and the dosage of the composite antibacterial agent are changed. The specific parameters are shown in Table 5.

[0097] Table 5 Parameters and conditions of Example 25 and Examples 28-37

[0098]

[0099]

[0100] Comparative Example 15 refers to the parameter conditions in Example 25, except that only nano-titanium dioxide is used as an antioxidant.

[0101] Comparative Example 16 refers to the parameter conditions in Example 25, except that no modified antioxidant is added.

[0102] Comparative Example 17 refers to the parameter conditions in Example 25, except that only nano zinc oxide is used as the antibacterial agent.

[0103] Comparative Example 18 refers to the parameter conditions in Example 25, except that only polyhexamethyleneguanidine hydrochloride is used as the antibacterial agent.

[0104] Comparative Example 19 refers to the parameter conditions in Example 25, except that only dodecyldimethylbenzyl ammonium chloride is used as the antibacterial agent.

[0105] Comparative Example 20 refers to the parameter conditions in Example 25, except that no composite antibacterial agent is added.

[0106] Example 38 Anti-fouling Test

[0107] According to the GBT 9780-2013 test method for stain resistance of architectural coatings, Example 25, Examples 28-37 and Comparative Examples 15-20 were tested. The larger the grade value, the worse the stain resistance. The results are shown in Table 6.

[0108] Table 6 Anti-fouling test of Example 25, Examples 28-37 and Comparative Examples 15-20

[0109]

[0110]

[0111] It can be found from Table 6 that in Example 25, Examples 28-33 and Comparative Examples 15-16, when only nano titanium dioxide is used as an antioxidant or no modified antioxidant is added, the stain resistance of the thermal insulation decorative integrated board is poor; when the modified antioxidant is added in the example, the stain resistance of the thermal insulation decorative integrated board is improved, indicating that the modified antioxidant plays an important role in improving the stain resistance. The modified antioxidant prepared by solution blending can effectively capture free radicals generated on the surface of the decorative layer due to factors such as light and temperature changes, and slow down or prevent the oxidation process of the decorative layer material. It can stabilize free radicals and interrupt the oxidation chain reaction by providing hydrogen atoms or electrons, so that the surface of the decorative layer maintains a relatively stable chemical structure, reduces surface microscopic defects caused by oxidation, thereby reducing the attachment points of pollutants such as dust and stains, and improving the stain resistance, so that the durability of the integrated board is improved. In Examples 34-37 and Comparative Examples 17-20, when only a single antibacterial agent is used or no composite antibacterial agent is added, the stain resistance of the thermal insulation decorative integrated board is poor; in the embodiment, the composite antibacterial agent plays an important role, and the stain resistance of the integrated board is significantly improved. This is because the composite antibacterial agent is composed of a variety of components with antibacterial activity, which can destroy the cell membrane, protein and nucleic acid structures of microorganisms, inhibit the growth and reproduction of microorganisms on the surface of the decorative layer. When microorganisms cannot breed in large quantities on the surface of the decorative layer, the adsorption of pollutants by the biofilm formed by microorganisms and their metabolites is reduced. At the same time, the modified antioxidant and the composite antibacterial agent work together in the decorative layer to further improve the stain resistance of the integrated board. The modified antioxidant maintains the stability and smoothness of the surface of the decorative layer, providing a good basis for the composite antibacterial agent to play a role, making it easier to contact and act on microorganisms and pollutants; the composite antibacterial agent reduces the damage of microorganisms to the decorative layer, avoids the change of surface structure caused by microbial growth, and helps the modified antioxidant to better play an antioxidant role and prevent surface oxidation, thereby improving the durability of the integrated board.

[0112] Examples 39-50

[0113] Referring to the parameter conditions in Example 36, the difference is that the synthesis conditions and dosage of the modified adhesive, the dosage of the composite antibacterial agent and the parameter conditions of hot pressing are changed. The specific parameters are shown in Table 7.

[0114] Table 7 Parameter conditions of Examples 36-37 and Examples 39-50

[0115]

[0116]

[0117] Comparative Example 21 refers to the parameter conditions in Example 36, except that only epoxy resin E-44 is added as an adhesive.

[0118] Comparative Example 22 refers to the parameter conditions in Example 36, except that no modified adhesive is added.

[0119] Comparative Example 23 refers to the parameter conditions in Example 36, except that only m-phenylenediamine is added as a curing agent.

[0120] Comparative Example 24 refers to the parameter conditions in Example 36, except that only ethylenediamine is added as a curing agent.

[0121] Comparative Example 25 refers to the parameter conditions in Example 36, except that only methyltetrahydrophthalic anhydride is added as a curing agent.

[0122] Comparative Example 26 refers to the parameter conditions in Example 36, except that no composite curing agent is added.

[0123] Comparative Example 27 refers to the parameter conditions in Example 36, except that the hot pressing temperature is 300°C and the hot pressing time is 1 hour.

[0124] Comparative Example 28 refers to the parameter conditions in Example 36, except that the hot pressing temperature is 50°C and the hot pressing time is 5 minutes.

[0125] Example 51 Tensile Bond Strength Test

[0126] According to JGT 287-2013 thermal insulation decorative exterior wall external insulation system material standard, Examples 36-37, Examples 39-50 and Comparative Examples 21-28 were tested, and the results are shown in Table 8. The tensile bond strength of Example 49 and Comparative Examples 21-28 is as shown in Table 8. Figure 2 shown.

[0127] Table 8 Tensile bond strength test of Examples 36-37, Examples 39-50 and Comparative Examples 21-28

[0128]

[0129]

[0130] From Table 8 and Figure 2It can be found that in Examples 36-37, Examples 39-42 and Comparative Examples 21-22, when only epoxy resin E-44 is used as an adhesive or no modified adhesive is used, the adhesion of the bonding layer liquid is low, resulting in a low tensile bonding strength of the integrated panel; when the modified adhesive is added, the tensile bonding strength of the examples is improved. This is because during the cross-linking modification process, the hydrogen atoms on the amine group attack the carbon atoms of the epoxy group, causing the epoxy group to open and form a new hydroxyl group. At the same time, the nitrogen atom of the amine group forms a chemical bond with the oxygen atom of the epoxy group to connect the two epoxy resin molecules. As the reaction proceeds, a large number of epoxy resin molecules are interconnected in this way, gradually forming a three-dimensional network structure, making the bonding layer and other layers more tightly bonded, effectively improving the bonding strength and extending the service life. In Examples 43-46 and Comparative Examples 23-26, when only a single curing agent is used or no composite curing agent is added, the tensile bonding strength of the thermal insulation decorative integrated board is low; in the embodiment, after adding the composite curing agent, the tensile bonding strength of the integrated board is significantly improved. This is because the composite curing agent is composed of a variety of curing components, which can react chemically with the active groups in the modified adhesive to promote the cross-linking reaction, so that the three-dimensional network cross-linked structure formed can greatly improve the cohesion of the adhesive and enhance the overall strength of the bonding layer, thereby making the bonding between the layers more firm. The modified adhesive and the composite curing agent also have a certain synergistic effect in the bonding layer, which jointly improves the bonding strength. The modified adhesive provides good adhesion and flexibility, creating favorable conditions for the composite curing agent to play a role, so that the cross-linking reaction can proceed smoothly between the interfaces of the layers of materials in close contact; the composite curing agent enhances the cohesion and overall performance of the modified adhesive by promoting the cross-linking reaction, further consolidates the bonding effect between the modified adhesive and the layers of materials, and improves the durability of the integrated board. In Examples 47-50 and Comparative Examples 27-28, if the hot pressing temperature is too high and the time is too long, the modified adhesive and other materials may become brittle due to overreaction or aging, reducing the bonding strength of the bonding layer, making it easy for the layers of the integrated board to delaminate and peel off; if the hot pressing temperature is too low and the time is too short, the modified adhesive cannot fully undergo a curing reaction and cannot form sufficient chemical bonds and physical cross-linking structures, resulting in insufficient bonding strength of the bonding layer, making the layers of the thermal insulation and decorative integrated board not tightly bonded, and delamination and falling off are prone to occur during use, seriously affecting the durability of the product; the temperature and time of the hot pressing are controlled to ensure the tensile bonding strength of the integrated board, thereby improving durability.

[0131] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-layer fixed structure thermal insulation decorative integrated board, characterized in that: The multi-layer fixed structure thermal insulation and decoration integrated panel comprises a thermal insulation layer, a protective layer, a decorative layer and a bonding layer; The thermal insulation layer comprises 15 parts of rock wool, 8 parts of polystyrene, 6 parts of phenolic resin, 1-3 parts of composite active agent and 0.5-0.9 parts of modified flame retardant; The modified flame retardant includes triphenyl phosphate and melamine cyanurate; The protective layer comprises 20 parts of fly ash, 10 parts of silica fume, 2-3 parts of modified dispersant, 0.6-0.8 parts of composite foaming agent and 0.1-0.3 parts of composite waterproofing agent; the modified dispersant comprises sodium tripolyphosphate, maleic anhydride and benzoyl peroxide; The decorative layer comprises 8 parts of colored aggregate, 12 parts of polyethylene wax, 0.5-0.7 parts of modified antioxidant, 0.3-0.5 parts of composite antibacterial agent and 6 parts of polyurethane; the modified antioxidant comprises silane coupling agent KH-570, nano titanium dioxide and polylactic acid; The bonding layer comprises 8-10 parts of modified adhesive, 2 parts of glass fiber, 2-4 parts of composite curing agent and 1 part of hydroxypropyl methylcellulose; the modified adhesive comprises epoxy resin E-44 and diethylenetriamine.

2. The multi-layer fixed structure thermal insulation decorative integrated board according to claim 1, characterized in that: The composite active agent is obtained by mixing triethanolamine, sodium dodecylbenzene sulfonate and stearic acid, and the weight ratio of the triethanolamine, the sodium dodecylbenzene sulfonate and the stearic acid is 3-5:1:

1.

3. The multi-layer fixed structure thermal insulation decorative integrated board according to claim 1, characterized in that: The composite foaming agent is obtained by mixing azodicarbonamide and n-pentane, and the weight ratio of the azodicarbonamide to the n-pentane is 1-3:1; the composite waterproofing agent is obtained by mixing sodium methyl silicate and polysiloxane, and the weight ratio of the sodium methyl silicate to the polysiloxane is 2-4:

2.

4. The multi-layer fixed structure thermal insulation decorative integrated board according to claim 1, characterized in that: The colored aggregate is colored quartz sand; the composite antibacterial agent is obtained by mixing nano zinc oxide, polyhexamethylene guanidine hydrochloride and dodecyl dimethyl benzyl ammonium chloride, and the weight ratio of the nano zinc oxide, the polyhexamethylene guanidine hydrochloride and the dodecyl dimethyl benzyl ammonium chloride is 2-6:2:

1.

5. The multi-layer fixed structure thermal insulation decorative integrated board according to claim 1, characterized in that: The composite curing agent is prepared by mixing metaphenylenediamine, ethylenediamine and methyltetrahydrophthalic anhydride, wherein the weight ratio of the metaphenylenediamine, the ethylenediamine and the methyltetrahydrophthalic anhydride is 1-3:2:

1.

6. A preparation process of a multi-layer fixed structure thermal insulation decorative integrated board, characterized in that: The multi-layer fixed structure thermal insulation and decorative integrated board according to claim 1 is prepared, and the preparation process comprises the following steps: S1: 15 parts of rock wool, 8 parts of polystyrene, 6 parts of phenolic resin, 1-3 parts of composite active agent and 0.5-0.9 parts of modified flame retardant are mixed and stirred for 2 hours, poured into a mold, cured at room temperature for 8 hours, and demolded to obtain an insulation layer; S2: 20 parts of fly ash, 10 parts of silica fume, 2-3 parts of modified dispersant, 0.6-0.8 parts of composite foaming agent and 0.1-0.3 parts of composite waterproofing agent are mixed and stirred for 3 hours, then poured into the mold, cured at room temperature for 10 hours, and demolded to obtain a protective layer; S3: 8 parts of colored aggregate, 12 parts of polyethylene wax, 0.5-0.7 parts of modified antioxidant, 0.3-0.5 parts of composite antibacterial agent and 6 parts of polyurethane are mixed and stirred for 2.5 hours, poured into the mold, cured at room temperature for 10 hours, and demolded to obtain a decorative layer; S4: 8-10 parts of modified adhesive, 2 parts of glass fiber, 2-4 parts of composite curing agent and 1 part of hydroxypropyl methylcellulose are stirred for 4 hours to obtain a bonding layer solution; S5 removes dust and debris on the thermal insulation layer, the protective layer and the decorative layer, and then transports them to the assembly station through a conveyor belt; S6: evenly apply half of the bonding layer solution on the thermal insulation layer, place the protective layer, press to make it fit tightly, apply the remaining bonding layer solution on the protective layer, place the decorative layer, press to make it fit tightly, lay a surface layer of paper on the decorative layer, and lay a bottom layer of paper under the thermal insulation layer to form a slab structure; S7: sending the slab structure into a hot press, controlling the temperature at 110°C-150°C, the pressure at 2MPa, and the hot pressing time at 10min-30min to obtain a semi-finished plate; S8: placing the semi-finished plate in a temporary storage area for 2 hours to allow it to cool naturally, thereby obtaining the multi-layer fixed structure thermal insulation and decorative integrated plate.

7. The process for preparing a multi-layer fixed structure thermal insulation decorative integrated board according to claim 6, characterized in that: The preparation method of the modified flame retardant is as follows: 4-6 parts of triphenyl phosphate are put into 10 parts of N,N-dimethylformamide, and solution A is obtained after stirring at 60°C for 30 minutes; 3 parts of melamine cyanurate are put into 6 parts of N,N-dimethylformamide, and solution B is obtained after stirring at 60°C for 20 minutes; solution A is added to solution B, and stirring is continued for 1h-3h to obtain a mixture; the mixture is distilled to remove N,N-dimethylformamide therein, and the obtained solid is dried to obtain the modified flame retardant.

8. The preparation process of a multi-layer fixed structure thermal insulation decorative integrated board according to claim 6, characterized in that: The preparation method of the modified dispersant is as follows: 20 parts of toluene are added into a four-necked flask, and then 6-8 parts of sodium tripolyphosphate and 5 parts of maleic anhydride are added, and after stirring for 30 minutes, 2 parts of benzoyl peroxide are added, and nitrogen is introduced into the four-necked flask to remove the air in the reaction system, and then the temperature is raised to 70° C., and the reaction is stirred for 6 h-8 h under the protection of nitrogen. After the reaction is completed, an excess of methanol is poured into the four-necked flask, and then the precipitated precipitate is washed with ethanol for multiple times, and then dried in a vacuum drying oven at 60° C. for 12 h to obtain the modified dispersant.

9. The preparation process of a multi-layer fixed structure thermal insulation decorative integrated board according to claim 6, characterized in that: The preparation method of the modified antioxidant is as follows: 0.1 parts of silane coupling agent KH-570 are added to 10 parts of anhydrous ethanol, and stirred evenly to obtain a mixed solution A; 4-6 parts of nano titanium dioxide are added to the mixed solution A, ultrasonically dispersed for 45 minutes, and then reacted at 70° C. for 3 hours under stirring conditions to obtain a mixed solution B; the mixed solution B is washed with anhydrous ethanol, and dried at 60° C. for 12 hours to obtain modified nano titanium dioxide; 0.5 parts of polylactic acid are added to 10 parts of dichloromethane, and stirred for 30 minutes to obtain a mixed solution C; the modified nano titanium dioxide is added to 10 parts of dichloromethane, and stirred for 30 minutes to obtain a mixed solution D; the mixed solution D is slowly added to the mixed solution C, and stirring is continued for 2h-4h to obtain a mixed solution E; the mixed solution E is naturally evaporated in a fume hood to evaporate the solvent, and then transferred to a vacuum drying oven and dried at 60°C for 24h to obtain the modified antioxidant.

10. The process for preparing a multi-layer fixed structure thermal insulation decorative integrated board according to claim 6, characterized in that: The preparation method of the modified adhesive is as follows: under stirring conditions, 10 parts of epoxy resin E-44, 0.8-1 parts of diethylenetriamine and 0.1 parts of propylene oxide butyl ether are added into a reaction container to obtain a mixture; the mixture is reacted at 80° C. for 4 hours, and the modified adhesive is obtained after the reaction is completed.

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