Heat preservation type gypsum plaster board

Abstract

The invention relates to the technical field of building materials, in particular to a heat preservation type paper surface gypsum board which comprises a paper surface gypsum board body, the paper surface gypsum board body is sequentially composed of front surface protective paper, a gypsum core body, an interface bonding layer, a heat preservation layer and back surface protective paper from outside to inside, and the front surface protective paper and the back surface protective paper are made of specially-made high-strength protective paper. The expanded perlite and aerogel composite thermal insulation material is adopted, so that the thermal insulation performance of the gypsum plaster board is greatly improved, the heat conductivity coefficient of the gypsum plaster board is lower than that of a traditional gypsum plaster board, heat transfer of a building can be effectively reduced, and energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of building materials technology, specifically to thermal insulation paper-faced gypsum board. Background Technology

[0002] Gypsum board is a material made primarily from building gypsum. It is a lightweight, high-strength, thin, easy-to-process building material with good sound insulation, heat insulation, and fire resistance properties. It is one of the new lightweight building materials that is currently being developed.

[0003] When existing insulation materials are combined with paper-faced gypsum board, problems such as weak adhesion and decreased insulation effect over time often occur. For example, some paper-faced gypsum boards that use polystyrene foam board as the insulation layer will develop cracks at the interface due to the large difference in thermal expansion coefficients between the foam board and the gypsum board during long-term use. This reduces the insulation performance and affects the stability of the board. In addition, some insulation materials themselves have problems such as poor environmental performance and low fire resistance rating, which cannot meet the current building safety and environmental protection requirements. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a thermal insulation paper-faced gypsum board, which can effectively solve the problem that the large difference in thermal expansion coefficients between the existing foam board and gypsum board leads to cracks at the interface between the two, which reduces the thermal insulation performance and affects the stability of the board.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a thermal insulation paper-faced gypsum board, comprising a paper-faced gypsum board, wherein the paper-faced gypsum board is composed of, from the outside to the inside, a front facing paper, a gypsum core, an interface adhesive layer, a thermal insulation layer, and a back facing paper. The front and back facing papers are made of specially made high-strength facing paper.

[0007] The front and back protective papers have a basis weight of 120-150 g / m², which not only have good flexibility but also tear resistance, effectively enhancing the overall strength of the board.

[0008] Preferably, the gypsum core is made by mixing dihydrate gypsum, additives, and water in a mass ratio of 100:0.1-0.3:50-60. The additives include a retarder, a reinforcing agent, and a water-reducing agent. The retarder is tartaric acid, used at 0.1-0.2% of the gypsum mass, which can precisely control the setting time of the gypsum. The reinforcing agent is chopped glass fiber with a length of 3-5 mm, used at 0.5-1% of the gypsum mass, which significantly improves the strength of the gypsum core 3. The water-reducing agent is a polycarboxylate-based water-reducing agent, used at 0.2-0.3% of the gypsum mass, which effectively reduces water consumption.

[0009] Preferably, the insulation layer uses a novel inorganic insulation material, which is composed of expanded perlite, aerogel, and an inorganic binder in a mass ratio of 5-7:2-3:1-2. The expanded perlite particle size is controlled at 0.5-1.5 mm, the aerogel has a specific surface area ≥800 m² / g, and the inorganic binder is a potassium silicate solution. The three components are combined to form a stable insulation structure.

[0010] Preferably, the interfacial bonding layer is composed of a silane coupling agent and a cement-based adhesive in a mass ratio of 1-2:8-9. The silane coupling agent can improve the interfacial compatibility between the gypsum core and the insulation layer, and enhance the adhesion between the two; the cement-based adhesive provides a high-strength bonding effect.

[0011] Preferably, the front and back protective papers are coated with a moisture-proof coating with a thickness between 0.05 and 0.15 mm, and the coating uses an organosilicon waterproofing agent as the main component.

[0012] Preferably, in addition to chopped glass fibers, 0.2%-0.4% by weight of polypropylene fibers are added to the gypsum core. Polypropylene fibers possess good flexibility and corrosion resistance, forming a composite reinforcement system with the chopped glass fibers to construct a three-dimensional network structure within the gypsum core.

[0013] Preferably, the total thickness of the thermal insulation paper-faced gypsum board is 12-20mm, which can be flexibly selected according to different usage scenarios.

[0014] Preferably, during the forming process of the insulation layer, a pore-forming agent with a mass ratio of 0.5%-1.5% is added to control the porosity of the insulation layer to be between 50% and 70%.

[0015] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0016] 1. The expanded perlite and aerogel composite insulation material used in this invention significantly improves the thermal insulation performance of paper-faced gypsum board. Its thermal conductivity is lower than that of traditional paper-faced gypsum board, which can effectively reduce heat transfer in buildings and reduce energy consumption.

[0017] 2. By setting the interface bonding layer, the adhesion between the gypsum core and the insulation layer is significantly enhanced, solving the problem of easy separation between the insulation layer and the gypsum board. During long-term use, the board structure is stable and will not delaminate or crack due to temperature changes, thus ensuring the durability of the insulation performance.

[0018] 3. The insulation layer uses inorganic materials that are non-toxic, odorless, and free of harmful substances. Furthermore, this material has a high fire resistance rating, does not burn when exposed to fire, and does not produce toxic gases, meeting the safety and environmental protection requirements of the current building environment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0020] Figure 1 This is a schematic diagram of the three-dimensional mechanism of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the gypsum board of the present invention.

[0022] Reference numerals: 1. Paper-faced gypsum board; 2. Front facing paper; 3. Gypsum core; 4. Interface bonding layer; 5. Insulation layer; 6. Back facing paper. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] The present invention will be further described below with reference to embodiments.

[0025] Example: Refer to Figures 1 to 2 The thermal insulation paper-faced gypsum board includes a paper-faced gypsum board 1, which consists of, from the outside to the inside, a front facing paper 2, a gypsum core 3, an interface adhesive layer 4, a thermal insulation layer 5, and a back facing paper 6. The front and back facing papers 6 are made of specially made high-strength facing paper.

[0026] The front protective paper 2 and the back protective paper 6 have a weight of 120-150g / ㎡. They not only have good flexibility but also tear resistance, which can effectively enhance the overall strength of the board. The expanded perlite and aerogel composite insulation material used significantly improves the thermal insulation performance of the paper-faced gypsum board. Its thermal conductivity is lower than that of traditional paper-faced gypsum board, which can effectively reduce heat transfer in buildings and reduce energy consumption.

[0027] The gypsum core 3 is made by mixing dihydrate gypsum, additives, and water in a mass ratio of 100:0.1-0.3:50-60. The additives include a retarder, a reinforcing agent, and a water-reducing agent. The retarder is tartaric acid, used at 0.1-0.2% of the gypsum mass, which precisely controls the setting time of the gypsum. The reinforcing agent is chopped glass fiber, 3-5 mm in length, used at 0.5-1% of the gypsum mass, which significantly improves the strength of the gypsum core 3. The water-reducing agent is a polycarboxylate-based water-reducing agent, used at 0.2-0.3% of the gypsum mass, which effectively reduces water consumption and improves the density and processing performance of the gypsum core 3.

[0028] The insulation layer 5 uses a new type of inorganic insulation material, which is composed of expanded perlite, aerogel, and inorganic binder in a mass ratio of 5-7:2-3:1-2. The particle size of the expanded perlite is controlled at 0.5-1.5mm, the specific surface area of ​​the aerogel is ≥800㎡ / g, and the inorganic binder is potassium silicate solution. The three are combined to form a stable insulation structure.

[0029] The interfacial bonding layer 4 is composed of silane coupling agent and cement-based adhesive in a mass ratio of 1-2:8-9. The silane coupling agent can improve the interfacial compatibility between the gypsum core 3 and the insulation layer 5, and enhance the adhesion between the two; the cement-based adhesive provides a high-strength bonding effect, ensuring that the insulation layer 5 and the gypsum core 3 are firmly bonded, effectively avoiding delamination and cracking problems caused by thermal expansion and contraction.

[0030] The front protective paper 2 and the back protective paper 6 are coated with a moisture-proof coating with a thickness between 0.05-0.15mm, and the coating uses an organosilicon waterproofing agent as the main component.

[0031] In the gypsum core 3, in addition to chopped glass fibers, polypropylene fibers with a mass ratio of 0.2%-0.4% are added. Polypropylene fibers have good flexibility and corrosion resistance, forming a composite reinforcement system with chopped glass fibers to construct a three-dimensional network structure inside the gypsum core 3;

[0032] The total thickness of the thermal insulation paper-faced gypsum board 1 is 12-20mm, which can be flexibly selected according to different application scenarios. During the molding process of the thermal insulation layer 5, a pore-forming agent with a mass ratio of 0.5%-1.5% is added to control the porosity of the thermal insulation layer 5 between 50% and 70%. The thermal insulation layer 5 uses inorganic materials that are non-toxic, odorless, and free of harmful substances. At the same time, this material has a high fire resistance rating, does not burn when exposed to fire, and does not produce toxic gases, thus meeting the safety and environmental protection requirements of the current building environment.

[0033] The working principle of this invention is as follows: First, accurately weigh 100 kg of gypsum dihydrate, 0.15 kg of tartaric acid, 0.7 kg of chopped glass fiber, 0.25 kg of polycarboxylate superplasticizer, and 55 kg of water. Add these raw materials sequentially to a twin-shaft mixer, setting the mixing speed to 300-500 r / min and the mixing time to 3-5 min to ensure a uniform gypsum slurry is formed. Pour the mixed gypsum slurry into a specially designed mold, the mold size customized according to the required gypsum board specifications. After initial curing at room temperature for 20-30 min, demold and send to a drying kiln. The drying kiln temperature is controlled at 120-150℃, and the drying time is 2-3 h, yielding gypsum core 3. Then, weigh 6 kg of expanded perlite, 2.5 kg of aerogel, and 1.5 kg of potassium silicate solution. First, add expanded perlite and aerogel to a high-speed mixer at a speed of 800-1000 rpm for 2-3 minutes to ensure thorough mixing. Then, slowly add potassium silicate solution and continue mixing for 3-5 minutes to form an insulation material slurry. Evenly coat the insulation material slurry onto a flat mold, controlling the thickness to 20-30 mm according to design requirements. After curing at room temperature for 24 hours, transfer it to a drying oven at 80-100℃ for 4-6 hours to complete curing, obtaining insulation layer 5. Weigh the appropriate raw materials according to the mass ratio of silane coupling agent to cement-based binder of 1.5:8.5 and mix them evenly. Using a specialized spray gun, evenly apply the interface bonding layer 4 material to one side of the gypsum core 3, controlling the coating thickness to 1-2 mm. Quickly attach the prepared insulation layer 5 to the surface of the gypsum core 3 coated with the interface bonding layer 4, applying a pressure of 0.2-0.3 MPa and holding for 5-10 minutes to ensure full adhesion. Evenly apply a specialized adhesive to the other side of the gypsum core 4 and the outer surface of the insulation layer 5, then attach the front facing paper 2 and the back facing paper 6 to their respective positions. Then, place the board into a hot press, controlling the hot pressing temperature at 100-120℃, the pressure at 0.3-0.5 MPa, and the hot pressing time at 3-5 minutes. Finally, cut to the required dimensions to obtain an insulated paper-faced gypsum board. The resulting paper-faced gypsum board 1 has a lower thermal conductivity than traditional paper-faced gypsum board, effectively reducing heat transfer in buildings and lowering energy consumption.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thermal insulation paper-faced gypsum board, characterized in that, The paper-faced gypsum board (1) is composed of, from the outside to the inside, a front facing paper (2), a gypsum core (3), an interface adhesive layer (4), a thermal insulation layer (5), and a back facing paper (6). The front and back facing papers (6) are made of specially made high-strength facing paper. The front protective paper (2) and the back protective paper (6) have a weight of 120-150 g / m², which not only have good flexibility, but also have tear resistance, and can effectively enhance the overall strength of the board.

2. The thermal insulation paper-faced gypsum board according to claim 1, characterized in that, The gypsum core (3) is made by mixing dihydrate gypsum, additives, and water in a mass ratio of 100:(0.1-0.3):(50-60). The additives include a retarder, a reinforcing agent, and a water-reducing agent. The retarder is tartaric acid, which accounts for 0.1-0.2% of the gypsum mass and can precisely control the setting time of the gypsum. The reinforcing agent is chopped glass fiber with a length of 3-5 mm, which accounts for 0.5-1% of the gypsum mass and significantly improves the strength of the gypsum core (3). The water-reducing agent is a polycarboxylate-based water-reducing agent, which accounts for 0.2-0.3% of the gypsum mass.

3. The thermal insulation paper-faced gypsum board according to claim 1, characterized in that, The insulation layer (5) is made of a new type of inorganic insulation material, which is composed of expanded perlite, aerogel and inorganic binder in a mass ratio of (5-7):(2-3):(1-2). The particle size of expanded perlite is controlled at 0.5-1.5mm, the specific surface area of ​​aerogel is ≥800㎡ / g, and the inorganic binder is potassium silicate solution. The three are combined to form a stable insulation structure.

4. The thermal insulation paper-faced gypsum board according to claim 1, characterized in that, The interfacial bonding layer (4) is composed of silane coupling agent and cement-based adhesive in a mass ratio of (1-2):(8-9). The silane coupling agent can improve the interfacial compatibility between the gypsum core (3) and the insulation layer (5) and enhance the adhesion between the two; the cement-based adhesive provides a high-strength bonding effect, ensuring that the insulation layer (5) and the gypsum core (3) are firmly bonded.

5. The thermal insulation paper-faced gypsum board according to claim 1, characterized in that, The front protective paper (2) and the back protective paper (6) are coated with a moisture-proof coating with a thickness between 0.05-0.15 mm, and the coating uses an organosilicon waterproofing agent as the main component.

6. The thermal insulation paper-faced gypsum board according to claim 1, characterized in that, In the gypsum core (3), in addition to chopped glass fibers, polypropylene fibers with a mass ratio of 0.2%-0.4% are added. Polypropylene fibers have good flexibility and corrosion resistance, and together with chopped glass fibers, they form a composite reinforcement system, constructing a three-dimensional network structure inside the gypsum core (3).

7. The thermal insulation paper-faced gypsum board according to claim 1, characterized in that, The total thickness of the thermal insulation paper-faced gypsum board (1) is 12-20mm, which can be flexibly selected according to different usage scenarios.

8. The thermal insulation paper-faced gypsum board according to claim 1, characterized in that, During the molding process of the insulation layer (5), a pore-forming agent with a mass ratio of 0.5%-1.5% is added to control the porosity of the insulation layer (5) to be between 50% and 70%.

Images