CN113800947A - Manufacturing process of inorganic hydrophobic insulation board - Google Patents
Manufacturing process of inorganic hydrophobic insulation board Download PDFInfo
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- CN113800947A CN113800947A CN202111291910.6A CN202111291910A CN113800947A CN 113800947 A CN113800947 A CN 113800947A CN 202111291910 A CN202111291910 A CN 202111291910A CN 113800947 A CN113800947 A CN 113800947A
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
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- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
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Abstract
The invention provides a manufacturing process of an inorganic hydrophobic insulation board, and relates to the technical field of chemical building materials. The manufacturing process of the inorganic hydrophobic insulation board comprises the following steps: s1, hydrophobic coating preparation: preparing hydrophobic paint from light calcium carbonate, purified water, sodium polyacrylate, polyurethane resin, aluminum silicate fiber, mica iron oxide, titanate coupling agent and dibromophenol; s2, waste treatment: crushing, color selecting, grinding and filter pressing the waste building rubbish to obtain filtrate; s3, firing of the insulation board: preparing the raw materials of the heat-insulation plate by filtrate, hydroxypropyl methyl cellulose, acrylic resin and silicon carbide, and preparing the raw materials of the heat-insulation plate into a heat-generating heat-insulation plate by a kiln matched with a foaming forming die; s4, after-treatment of the heat-insulation plate: and spraying the heated hydrophobic coating on the surface of the heating insulation board to obtain the hydrophobic insulation board. The inorganic hydrophobic insulation board has good waterproof performance and impact resistance, can be used for secondary utilization of waste building materials, and is energy-saving and environment-friendly.
Description
Technical Field
The invention relates to the technical field of chemical building materials, in particular to a manufacturing process of an inorganic hydrophobic insulation board.
Background
The heat preservation board is a panel of general application in with the building field, from energy-concerving and environment-protective angle, and the heat preservation board can reduce the power consumption of temperature regulation equipment in the building, and the energy saving loss, inorganic heat preservation board's host material are the inorganic matter, compare in the organic heat preservation board that uses the organic matter as host material, and inorganic heat preservation board flame retardant efficiency is good, and the security performance is high.
Inorganic heated board has energy-concerving and environment-protective, heat preservation is thermal-insulated, fire prevention is prevented frostbite, advantages such as construction convenience, and market demand is great, and inorganic heated board on the market is stronger although fire behavior, nevertheless often wets because of the hydrophobicity is not enough or panel fracture, and then leads to the bad consequence that keeps warm inefficacy, and current inorganic heated board remains the improvement to abandonment building material's utilization ratio in addition.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a manufacturing process of an inorganic hydrophobic insulation board, and solves the problems of insufficient waterproof performance of the inorganic insulation board and low utilization rate of waste building materials.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a manufacturing process of an inorganic hydrophobic insulation board comprises the following steps:
s1, hydrophobic coating preparation
Firstly, introducing light calcium carbonate, purified water and sodium polyacrylate into a reaction tank, stirring for 25-35 min, then adding polyurethane resin and aluminum silicate fiber into the reaction tank, stirring for 30-40 min, finally adding micaceous iron oxide, titanate coupling agent and dibromophenol into the reaction tank, and stirring for 35-45 min to obtain a hydrophobic coating;
s2, waste treatment
Carrying out primary crushing treatment on waste building garbage through a jaw crusher, putting the once crushed building garbage into a color selector, screening out waste glass and waste concrete, carrying out secondary crushing treatment on the waste glass and the waste concrete through an impact crusher to obtain finely crushed glass and finely crushed concrete, cleaning and filtering the finely crushed glass and the finely crushed concrete to obtain grinding raw materials, sequentially putting the grinding raw materials into a wet ball mill for grinding, filtering a grinding product through a filter press after grinding is finished to obtain a filter cake and filtrate, doping the filter cake into the next batch of grinding raw materials for next batch of grinding, and pouring the filtrate into a liquid collecting tank;
s3, firing the insulation board
Putting the filtrate in the liquid collecting tank in the S2, hydroxypropyl methyl cellulose, acrylic resin and silicon carbide into a drying stirrer, stirring for 55-65 min to obtain a heat-insulating plate raw material, putting the heat-insulating plate raw material into a foam forming mould, putting the foam forming mould filled with the heat-insulating plate raw material into a kiln, firstly raising the temperature of the kiln from the normal temperature to the preheating temperature at the speed of 1.5 ℃/min, preheating for 15-25 min, then raising the temperature of the kiln from the preheating temperature to the foaming temperature at the speed of 1 ℃/min, foaming for 25-35 min, then raising the temperature of the kiln from the foaming temperature to the sintering temperature at the speed of 1 ℃/min, sintering for 30-40 min, then lowering the temperature of the kiln from the sintering temperature to the annealing temperature at the speed of 0.8 ℃/min, annealing for 2-2.5 h, then lowering the temperature of the kiln from the annealing temperature to 120-130 ℃ at the speed of 1 ℃/min, standing the mold for 20-30 min in the temperature environment, and finally taking out the mold from the kiln to obtain a heating insulation board;
s4, after-treatment of heat-insulation board
And in the process of standing the mold in the S3, heating the reaction tank filled with the hydrophobic coating in the S1, putting the heating insulation board in the S3 into a spraying chamber, spraying the heated hydrophobic coating onto the surface of the heating insulation board in the spraying chamber by matching a coating pump with a spray gun to obtain a hydrophobic insulation board, and taking the hydrophobic insulation board out of the spraying chamber after the hydrophobic insulation board is cooled to the normal temperature.
Preferably, purified water and sodium cocoyl sulfate are added into the wet ball mill during the grinding in S2.
Preferably, the mesh number of the filter cloth of the filter press in the S2 is 180 meshes.
Preferably, the drying temperature of the drying and stirring machine in the step S3 is 50-60 ℃.
Preferably, in S3, the steam generated during the drying process of the drying and stirring machine is cooled by a cooling tower to obtain a coolant, and the coolant is introduced into the A2O integrated sewage treatment facility to perform sewage purification treatment.
Preferably, the preheating temperature of the kiln in the S3 is 60-80 ℃, the foaming temperature is 800-850 ℃, the sintering temperature is 1100-1150 ℃, and the annealing temperature is 540-550 ℃.
Preferably, the gas volatilized in the spray booth in S4 is subjected to an exhaust gas purification treatment by a biological deodorization tower.
(III) advantageous effects
The invention provides a manufacturing process of an inorganic hydrophobic insulation board. The method has the following beneficial effects:
1. according to the invention, the light calcium carbonate is matched with the sodium polyacrylate to synthesize the filler of the hydrophobic coating, the polyurethane resin is matched with the aluminum silicate fiber to synthesize the film forming substance of the hydrophobic coating, the mica iron oxide and the titanate coupling agent are mixed with the filler and the film forming substance to form the hydrophobic coating, the hydrophobic coating has higher waterproof performance and corrosion resistance, is rich in elasticity and has impact resistance, the crack resistance of the inorganic insulation board is improved through the polypropylene crack resistance fiber, the hydrophobic coating is sprayed by adopting a thermal spraying mode, and in the spraying process, the residual heat of the heating insulation board which is just taken out of a kiln is utilized to evaporate the moisture in the coating, so that the moisture is prevented from permeating into the inorganic insulation board, and the insulation board has better waterproof capability.
2. The method comprises the steps of crushing, color sorting, grinding and filter pressing waste glass and waste concrete to obtain filtrate containing glass particles and concrete particles, taking the glass particles and the concrete particles in the filtrate as main materials of the inorganic insulation board, and foaming and sintering the inorganic insulation board in the firing process by matching hydroxypropyl methyl cellulose with acrylic resin and silicon carbide, so that secondary recovery of the waste glass and the waste concrete is realized, and building raw materials are fully utilized.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the embodiment of the invention provides a manufacturing process of an inorganic hydrophobic insulation board, which comprises the following steps:
s1, hydrophobic coating preparation
Firstly, introducing light calcium carbonate, purified water and sodium polyacrylate into a reaction tank, stirring for 26min, then adding polyurethane resin and aluminum silicate fiber into the reaction tank, stirring for 32min, finally adding mica iron oxide, titanate coupling agent and dibromophenol into the reaction tank, stirring for 36min to obtain hydrophobic coating, taking sodium polyacrylate as a suspending agent to enable the light calcium carbonate to form suspension in the purified water, avoiding agglomeration of the light calcium carbonate, obtaining filler of the hydrophobic coating, adding polyurethane resin and aluminum silicate fiber into the reaction tank filled with the suspension, enabling the polyurethane resin to form an elastic film-forming substance, enhancing the impact resistance of the coating, enabling the aluminum silicate fiber to improve the flame retardant property of the hydrophobic coating and play a role in thickening, enabling the mica iron oxide to provide waterproof capability and corrosion resistance capability for the hydrophobic coating, and enabling the sodium polyacrylate to be matched with the aluminum silicate fiber to prevent the mica iron oxide from settling, the titanate coupling agent enhances the adhesion of the hydrophobic coating;
s2, waste treatment
Carrying out primary crushing treatment on the waste building rubbish by a jaw crusher, putting the once crushed building rubbish into a color sorter, screening out waste glass and waste concrete, removing wood and metal in the building rubbish, carrying out secondary crushing treatment on the waste glass and the waste concrete by an impact crusher to obtain fine crushed glass and fine crushed concrete, cleaning and filtering the fine glass and the fine concrete to obtain grinding raw materials, sequentially putting the grinding raw materials into a wet ball mill for grinding, after grinding is finished, filtering the ground product by a filter press to obtain a filter cake and a filtrate, doping the filter cake into the ground raw material of the next batch for grinding the next batch, pouring the filtrate into a liquid collecting pool, wherein the inorganic heat-insulating plate takes glass particles and concrete particles in the filtrate as main body materials of the inorganic heat-insulating plate;
s3, firing the insulation board
Putting the filtrate in the liquid collecting tank in S2, hydroxypropyl methylcellulose, acrylic resin and silicon carbide into a drying stirrer, stirring for 58min to obtain a raw material of the insulation board, putting the raw material of the insulation board into a foam forming mould, putting the foam forming mould filled with the raw material of the insulation board into a kiln, firstly raising the temperature of the kiln from the normal temperature to the preheating temperature at the speed of 1.5 ℃/min, preheating for 23min, then raising the temperature of the kiln from the preheating temperature to the foaming temperature at the speed of 1 ℃/min, foaming for 27min, then raising the temperature of the kiln from the foaming temperature to the sintering temperature at the speed of 1 ℃/min, sintering for 36min, then lowering the temperature of the kiln from the sintering temperature to the annealing temperature at the speed of 0.8 ℃/min, annealing for 2h, then lowering the temperature of the kiln from the annealing temperature to 128 ℃ at the speed of 1 ℃/min, standing the mould for 21min under the temperature environment, finally, taking the mold out of the kiln to obtain a heating insulation board;
s4, after-treatment of heat-insulation board
Heating a reaction tank filled with hydrophobic coating in S1 in the process of standing a die in S3, putting a heating insulation board in S3 into a spraying chamber, spraying the heated hydrophobic coating onto the surface of the heating insulation board in the spraying chamber by matching a coating pump with a spray gun to obtain a hydrophobic insulation board, taking the hydrophobic insulation board out of the spraying chamber after the hydrophobic insulation board is cooled to normal temperature, improving the crack resistance of the inorganic insulation board by polypropylene crack-resistant fibers, spraying the hydrophobic coating by adopting a thermal spraying mode, evaporating the moisture in the coating by using the waste heat of the heating insulation board just taken out of a kiln in the spraying process, avoiding the moisture from permeating into the inorganic insulation board, ensuring that the insulation board has better waterproof capability, avoiding thermal insulation failure, promoting the adhesion of the insulation board by acrylic resin, and generating carbon dioxide by the reaction of silicon carbide and oxygen when the kiln reaches a foaming temperature, the inorganic heat-insulation board is foamed, so that the inorganic heat-insulation board has heat-insulation capacity, and the hydroxypropyl methyl cellulose enables all components in the inorganic heat-insulation board to be uniformly dispersed, so that the inorganic heat-insulation board is ensured to be uniform in texture.
And S2, adding purified water and sodium cocoanut alcohol sulfate into the wet ball mill in the grinding process, wherein the sodium cocoanut alcohol sulfate reduces the tension of the mixed solution in the wet ball mill and improves the grinding effect.
In S2, the mesh number of the filter cloth of the filter press is 180 meshes, so that the grain diameter of the glass particles and the concrete particles in the filtrate generated by the filter press is less than 80 mu m.
And in S3, the drying temperature of the drying stirrer is 53 ℃, and the components in the raw materials of the insulation board are uniformly mixed while the filtrate is dried.
And (8) cooling the water vapor generated in the drying process of the drying stirrer in the S3 by using a cooling tower to obtain a cooling liquid, and introducing the cooling liquid into the A2O integrated sewage treatment equipment for sewage purification treatment.
In the S3, the preheating temperature of the kiln is 65 ℃, the foaming temperature is 820 ℃, the sintering temperature is 1100 ℃, and the annealing temperature is 542 ℃, so that the situation that residual water vapor is evaporated too fast to impact the insulation board structure is avoided, the stress of the insulation board raw material is eliminated in the annealing process, and the inorganic insulation board is prevented from cracking.
And (S4) purifying the waste gas of the gas volatilized in the spraying chamber by a biological deodorization tower.
Example two:
the embodiment of the invention provides a manufacturing process of an inorganic hydrophobic insulation board, which comprises the following steps:
s1, hydrophobic coating preparation
Firstly, introducing light calcium carbonate, purified water and sodium polyacrylate into a reaction tank, stirring for 32min, then adding polyurethane resin and aluminum silicate fiber into the reaction tank, stirring for 37min, finally adding mica iron oxide, titanate coupling agent and dibromophenol into the reaction tank, stirring for 42min to obtain hydrophobic coating, taking sodium polyacrylate as a suspending agent to enable the light calcium carbonate to form suspension in the purified water, avoiding the light calcium carbonate from agglomerating, obtaining filler of the hydrophobic coating, adding polyurethane resin and aluminum silicate fiber into the reaction tank filled with the suspension, enabling the polyurethane resin to form an elastic film-forming substance, enhancing the impact resistance of the coating, enabling the aluminum silicate fiber to improve the flame retardant property of the hydrophobic coating and play a role in thickening, enabling the mica iron oxide to provide waterproof capability and corrosion resistance capability for the hydrophobic coating, and enabling the sodium polyacrylate to be matched with the aluminum silicate fiber to prevent the mica iron oxide from settling, the titanate coupling agent enhances the adhesion of the hydrophobic coating;
s2, waste treatment
Carrying out primary crushing treatment on the waste building rubbish by a jaw crusher, putting the once crushed building rubbish into a color sorter, screening out waste glass and waste concrete, removing wood and metal in the building rubbish, carrying out secondary crushing treatment on the waste glass and the waste concrete by an impact crusher to obtain fine crushed glass and fine crushed concrete, cleaning and filtering the fine glass and the fine concrete to obtain grinding raw materials, sequentially putting the grinding raw materials into a wet ball mill for grinding, after grinding is finished, filtering the ground product by a filter press to obtain a filter cake and a filtrate, doping the filter cake into the ground raw material of the next batch for grinding the next batch, pouring the filtrate into a liquid collecting pool, wherein the inorganic heat-insulating plate takes glass particles and concrete particles in the filtrate as main body materials of the inorganic heat-insulating plate;
s3, firing the insulation board
Putting the filtrate in the liquid collecting tank in S2, hydroxypropyl methylcellulose, acrylic resin and silicon carbide into a drying stirrer, stirring for 62min to obtain a raw material of the insulation board, putting the raw material of the insulation board into a foam forming mould, putting the foam forming mould filled with the raw material of the insulation board into a kiln, firstly raising the temperature of the kiln from the normal temperature to the preheating temperature at the speed of 1.5 ℃/min, preheating for 18min, then raising the temperature of the kiln from the preheating temperature to the foaming temperature at the speed of 1 ℃/min, foaming for 32min, then raising the temperature of the kiln from the foaming temperature to the sintering temperature at the speed of 1 ℃/min, sintering for 30min, then lowering the temperature of the kiln from the sintering temperature to the annealing temperature at the speed of 0.8 ℃/min, annealing for 2.5h, then lowering the temperature of the kiln from the annealing temperature to 128 ℃ at the speed of 1 ℃/min, and standing the mould for 28min under the temperature environment, finally, taking the mold out of the kiln to obtain a heating insulation board;
s4, after-treatment of heat-insulation board
In the S3 standing mould process, a reaction tank filled with hydrophobic coating in S1 is heated, the heating insulation board in S3 is placed in a spraying chamber, the heated hydrophobic coating is sprayed to the surface of the heating insulation board in the spraying chamber through a coating pump matched with a spray gun to obtain a hydrophobic insulation board, the hydrophobic insulation board is taken out of the spraying chamber after being cooled to normal temperature, the adhesion of the insulation board is promoted through acrylic resin, silicon carbide reacts with oxygen to generate carbon dioxide when reaching a foaming temperature in a kiln, so that the inorganic insulation board is foamed, the inorganic insulation board has the heat preservation capability, and the hydroxypropyl methyl cellulose enables all components in the inorganic insulation board to be uniformly dispersed, thereby ensuring the uniform texture of the inorganic insulation board, realizing the secondary recovery of waste glass and waste concrete, and fully utilizing building raw materials.
And S2, adding purified water and sodium cocoanut alcohol sulfate into the wet ball mill in the grinding process, wherein the sodium cocoanut alcohol sulfate reduces the tension of the mixed solution in the wet ball mill and improves the grinding effect.
In S2, the mesh number of the filter cloth of the filter press is 180 meshes, so that the grain diameter of the glass particles and the concrete particles in the filtrate generated by the filter press is less than 80 mu m.
And in S3, the drying temperature of the drying stirrer is 57 ℃, and the components in the raw materials of the insulation board are uniformly mixed while the filtrate is dried.
And (8) cooling the water vapor generated in the drying process of the drying stirrer in the S3 by using a cooling tower to obtain a cooling liquid, and introducing the cooling liquid into the A2O integrated sewage treatment equipment for sewage purification treatment.
In the S3, the preheating temperature of the kiln is 75 ℃, the foaming temperature is 850 ℃, the sintering temperature is 1130 ℃, and the annealing temperature is 548 ℃, so that the raw materials of the heat-insulating plate are preheated, the phenomenon that residual water vapor is evaporated too fast to cause impact on the structure of the heat-insulating plate is avoided, the stress of the raw materials of the heat-insulating plate is eliminated in the annealing process, and the inorganic heat-insulating plate is prevented from cracking.
And (S4) purifying the waste gas of the gas volatilized in the spraying chamber by a biological deodorization tower.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A manufacturing process of an inorganic hydrophobic insulation board is characterized by comprising the following steps: the method comprises the following steps:
s1, hydrophobic coating preparation
Firstly, introducing light calcium carbonate, purified water and sodium polyacrylate into a reaction tank, stirring for 25-35 min, then adding polyurethane resin and aluminum silicate fiber into the reaction tank, stirring for 30-40 min, finally adding micaceous iron oxide, titanate coupling agent and dibromophenol into the reaction tank, and stirring for 35-45 min to obtain a hydrophobic coating;
s2, waste treatment
Carrying out primary crushing treatment on waste building garbage through a jaw crusher, putting the once crushed building garbage into a color selector, screening out waste glass and waste concrete, carrying out secondary crushing treatment on the waste glass and the waste concrete through an impact crusher to obtain finely crushed glass and finely crushed concrete, cleaning and filtering the finely crushed glass and the finely crushed concrete to obtain grinding raw materials, sequentially putting the grinding raw materials into a wet ball mill for grinding, filtering a grinding product through a filter press after grinding is finished to obtain a filter cake and filtrate, doping the filter cake into the next batch of grinding raw materials for next batch of grinding, and pouring the filtrate into a liquid collecting tank;
s3, firing the insulation board
Putting the filtrate in the liquid collecting tank in the S2, hydroxypropyl methyl cellulose, polypropylene anti-crack fiber, acrylic resin and silicon carbide into a drying stirrer, stirring for 55-65 min to obtain a heat insulation board raw material, putting the heat insulation board raw material into a foam forming mold, putting the foam forming mold filled with the heat insulation board raw material into a kiln, firstly raising the temperature of the kiln from the normal temperature to the preheating temperature at the speed of 1.5 ℃/min, preheating for 15-25 min, then raising the temperature of the kiln from the preheating temperature to the foaming temperature at the speed of 1 ℃/min, foaming for 25-35 min, then raising the temperature of the kiln from the foaming temperature to the sintering temperature at the speed of 1 ℃/min, sintering for 30-40 min, then lowering the temperature of the kiln from the sintering temperature to the annealing temperature at the speed of 0.8 ℃/min, annealing for 2-2.5 h, then lowering the temperature of the kiln from the annealing temperature to 120-130 ℃ at the speed of 1 ℃/min, standing the mold for 20-30 min in the temperature environment, and finally taking out the mold from the kiln to obtain a heating insulation board;
s4, after-treatment of heat-insulation board
And in the process of standing the mold in the S3, heating the reaction tank filled with the hydrophobic coating in the S1, putting the heating insulation board in the S3 into a spraying chamber, spraying the heated hydrophobic coating onto the surface of the heating insulation board in the spraying chamber by matching a coating pump with a spray gun to obtain a hydrophobic insulation board, and taking the hydrophobic insulation board out of the spraying chamber after the hydrophobic insulation board is cooled to the normal temperature.
2. The manufacturing process of the inorganic hydrophobic insulation board according to claim 1, characterized in that: and adding purified water and sodium cocoanut alcohol sulfate into a wet ball mill during the grinding process in the S2.
3. The manufacturing process of the inorganic hydrophobic insulation board according to claim 1, characterized in that: the filter cloth mesh number of the filter press in the S2 is 180 meshes.
4. The manufacturing process of the inorganic hydrophobic insulation board according to claim 1, characterized in that: and the drying temperature of the drying stirrer in the S3 is 50-60 ℃.
5. The manufacturing process of the inorganic hydrophobic insulation board according to claim 1, characterized in that: and (3) cooling the water vapor generated in the drying process of the drying stirrer in the S3 by using a cooling tower to obtain a cooling liquid, and introducing the cooling liquid into the A2O integrated sewage treatment equipment to perform sewage purification treatment.
6. The manufacturing process of the inorganic hydrophobic insulation board according to claim 1, characterized in that: the preheating temperature of the kiln in the S3 is 60-80 ℃, the foaming temperature is 800-850 ℃, the sintering temperature is 1100-1150 ℃, and the annealing temperature is 540-550 ℃.
7. The manufacturing process of the inorganic hydrophobic insulation board according to claim 1, characterized in that: and (3) performing waste gas purification treatment on the gas volatilized in the spraying chamber in the S4 through a biological deodorization tower.
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