CN111647251A - Environment-friendly refractory material for buildings and preparation method thereof - Google Patents

Environment-friendly refractory material for buildings and preparation method thereof Download PDF

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CN111647251A
CN111647251A CN202010598275.5A CN202010598275A CN111647251A CN 111647251 A CN111647251 A CN 111647251A CN 202010598275 A CN202010598275 A CN 202010598275A CN 111647251 A CN111647251 A CN 111647251A
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fly ash
environment
agent
reducing agent
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赵烨
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Hangzhou Kasi Home Design Co ltd
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Hangzhou Kasi Home Design Co ltd
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Abstract

The invention provides an environment-friendly refractory material for buildings, which is prepared from the following raw materials: modified phenolic resin, MgO-Al2O3ZnO nano powder, graphene oxide modified fly ash floating beads, glass wool, expanded graphite, an exciting agent, a foaming agent, a foam stabilizer, a water reducing agent, perlite, ethylenediamine, adipic acid, polycaprolactone diol, glycerol triglycerate and polyvinyl alcohol. The building refractory material has the advantages of small heat conductivity coefficient, light weight, high strength, good thermal shock resistance, high refractoriness (more than 1800 ℃) and the like, thereby having wide application prospect.

Description

Environment-friendly refractory material for buildings and preparation method thereof
Technical Field
The invention relates to the technical field of building materials, in particular to an environment-friendly fire-resistant material for buildings and a preparation method thereof.
Background
The refractory heat-insulating material is a material which is high temperature resistant, small in heat conductivity, thermal shock resistant and flame retardant, can slow down heat loss caused by heat conduction, heat convection and the like, and can slow down heat loss by limiting air heat convection with low heat conductivity through a special structure of the material. Refractory heat insulating materials are generally used in industrial furnaces, metallurgy, pipelines and thermal equipment to slow down the loss of heat. The refractory and heat-insulating materials of the wall of the general industrial kiln are mostly light refractory and heat-insulating materials, such as light clay bricks, light high-alumina bricks, light refractory castable and the like, so that the construction is convenient, the refractory and heat-insulating effects are good, and the wall of the kiln has certain mechanical strength.
In recent years, a great deal of intensive research on refractory materials at home and abroad is carried out, and various novel refractory heat-insulating materials with good refractory performance and no pollution are successfully developed. Currently, many kinds of refractory materials have been studied, and the classification of the materials in the industry is generally based on the structure, material, and use temperature.
The phenolic resin for the refractory material has higher carbon residue rate and good infiltration performance on refractory aggregate and graphite, so that pug can be mixed and formed at normal temperature, and after drying treatment, the phenolic resin is carbonized to form a continuous combined carbon skeleton, so that the strength and the erosion resistance of the carbon composite refractory material can be improved.
The phenol and formaldehyde aqueous solution are sequentially added into a reactor provided with a stirrer, a reflux condenser, a thermometer, a steam heating interlayer and a vacuumizing device in the synthesis process, the mixture is stirred at a constant speed and heated to a proper temperature, then one third of all catalysts are added, at the moment, the condensation polymerization reaction of the phenol and the aldehyde is very violent, even boiling, and the steam generated by boiling is cooled and refluxed into the reactor when passing through the condenser. After the reaction is stable, the residual catalyst is added completely, and the phenomena of violent reaction and boiling occur in the reactor again. At the moment, if power failure and water cut off occur or an operator cannot handle the reactor in time, the reactor has potential explosion hazards, even if the operator opens the emptying valve in time, a large amount of phenol and aldehyde are discharged into the surrounding air due to violent boiling in the reactor, the human health is harmed, equipment is corroded, and the environment is polluted. In addition, vacuum dehydration is needed after the phenolic aldehyde polycondensation reaction is finished, and discharged industrial wastewater contains a large amount of free phenol and free aldehyde, so that rivers and lakes are polluted, and the ecological environment is damaged. Moreover, the traditional synthesis method consumes energy and labor, and has long production period and low efficiency.
Disclosure of Invention
The invention aims to provide an environment-friendly refractory material for buildings and a preparation method thereof, and the environment-friendly refractory material has the advantages of small heat conductivity coefficient, light weight, high strength, good thermal shock resistance, high refractoriness (more than 1800 ℃) and the like.
The technical scheme of the invention is realized as follows:
the invention provides an environment-friendly refractory material for buildings, which is prepared from the following raw materials: modified phenolic resin, MgO-Al2O3-ZnO nanopowder, graphene oxide modified fly ash floating beads, glass wool, expanded graphite, an activator, a foaming agent, a foam stabilizer, a water reducing agent, perlite, ethylenediamine, adipic acid, polycaprolactone diol, glycerol triglycerate, polyvinyl alcohol;
the modified phenolic resin is prepared by the following method: respectively adding phenol, formaldehyde, a catalyst and a dispersing agent into a device, stirring and heating to the polycondensation reaction temperature of 95-98 ℃, after the reaction is carried out for 30-40min, adding sodium carboxymethylcellulose and calcium sulfonate, continuing to stir and react for 10-20min, adding a crosslinking assistant HMTA, continuing to maintain the original temperature and the stirring speed for reaction for 2-4h, then adjusting the pH value to 2 by using 1-2mol/L hydrochloric acid solution, continuing to solidify for 1-2h, stopping heating, adding a large amount of distilled water, stirring and naturally cooling to room temperature to obtain modified phenolic resin;
the mass ratio of the phenol to the formaldehyde to the catalyst to the dispersing agent to the cross-linking auxiliary agent HMTA to the sodium carboxymethylcellulose to the calcium sulfonate is 5:0.5-1:0.01-0.1:0.1-0.5:0.1-0.2:1-3: 0.5-1;
the catalyst is selected from one or a mixture of more of CuCl/Me6-TREN, TEA, dibutyltin diacetate, N, N-dimethylanilinium tetrakis (pentafluorophenyl) borate, cyclopentadienyl vanadium dichloride, N, N, N '-trimethyl-N' - (2-hydroxyethyl) bis (2-aminoethyl) ether and (indenyl) titanium trichloride;
the dispersing agent is selected from one or more of polyvinyl alcohol, microcrystalline wax, calcium stearate, cadmium stearate, magnesium stearate, copper stearate, ethylene-acrylic acid copolymer, ethylene-vinyl acetate copolymer, polyethylene glycol 200 and polyethylene glycol 400;
the graphene oxide modified fly ash floating bead is prepared by the following method: weighing fly ash floating beads with the particle size of 45-75 mu m, washing impurities in the fly ash floating beads by deionized water, adding the fly ash floating beads into 1.5-2.5 wt% of silane coupling agent KH560 aqueous solution, reacting at 80-85 ℃ for 0.5-1h, filtering, drying to constant mass, adding the obtained powder into 5-15 wt% of graphene oxide aqueous solution, heating to 45-55 ℃ for reacting for 1-2h, filtering, grinding and uniformly mixing in a mortar, then placing the solid in a muffle furnace, introducing nitrogen atmosphere, roasting at 800-900 ℃ for 1-3h, slowly cooling to room temperature, washing the roasted compound with deionized water until the pH of the water before and after washing is similar, placing in a drying box, and drying to constant mass to obtain the graphene oxide modified fly ash floating beads;
the MgO-Al2O3the-ZnO nano powder is prepared by the following method: respectively grinding magnesium oxide, aluminum oxide and zinc oxide to below 100 meshes, uniformly mixing, feeding into a muffle furnace under a nitrogen atmosphere condition, heating to 850 ℃ at a high temperature, carrying out high-temperature activation sintering for 1-3h, cooling to room temperature, uniformly mixing by adopting a ball milling process to obtain Al with the particle size of 100-2O3-ZnO-CaO nanopowder;
the mass ratio of the magnesium oxide to the aluminum oxide to the zinc oxide is 2:1-4: 1-3.
As a further improvement of the invention, the health-care food is prepared from the following raw materials in parts by weight: 30-70 parts of modified phenolic resin and MgO-Al2O310-20 parts of-ZnO nano powder and 5-2 parts of graphene oxide modified fly ash floating bead5 parts of glass wool, 3-10 parts of expanded graphite, 0.5-1 part of exciting agent, 0.5-2 parts of foaming agent, 0.1-1 part of foam stabilizer, 1-2 parts of water reducing agent, 10-20 parts of perlite, 3-5 parts of ethylenediamine, 1-3 parts of adipic acid, 2-5 parts of polycaprolactone diol, 1-4 parts of glycerol triglycerate ester and 1-4 parts of polyvinyl alcohol.
As a further improvement of the invention, the health-care food is prepared from the following raw materials in parts by weight: 40-60 parts of modified phenolic resin and MgO-Al2O312-18 parts of ZnO nano powder, 10-22 parts of graphene oxide modified fly ash floating bead, 4-8 parts of glass wool, 2-4 parts of expanded graphite, 0.6-0.9 part of exciting agent, 0.7-1.5 parts of foaming agent, 0.2-0.8 part of foam stabilizer, 1.2-1.8 parts of water reducing agent, 12-17 parts of perlite, 3.5-4.5 parts of ethylenediamine, 1.5-2.5 parts of adipic acid, 3-5 parts of polycaprolactone diol, 1-3 parts of glycerol triglycerate and 1-3 parts of polyvinyl alcohol.
As a further improvement of the invention, the health-care food is prepared from the following raw materials in parts by weight: 50 parts of modified phenolic resin and MgO-Al2O316 parts of ZnO nano powder, 17 parts of oxidized graphene modified fly ash floating beads, 5 parts of glass wool, 3 parts of expanded graphite, 0.7 part of exciting agent, 1 part of foaming agent, 0.6 part of foam stabilizer, 1.6 parts of water reducing agent, 15 parts of perlite, 4 parts of ethylenediamine, 2 parts of adipic acid, 4 parts of polycaprolactone diol, 2 parts of glycerol triglyceride and 2 parts of polyvinyl alcohol.
As a further improvement of the invention, the foaming agent is selected from one or a mixture of more of calcium carbonate, magnesium carbonate, sodium bicarbonate, sodium silicate, silicon carbide, carbon black, n-pentane, n-hexane, n-heptane, petroleum ether, chlorotrifluoromethane, dichlorodifluoromethane and dichlorotetrafluoroethane.
As a further improvement of the invention, the foam stabilizer is one or a mixture of several selected from polyacrylamide, polyvinyl alcohol, protein, polypeptide, starch, cellulose, lauryl sodium sulfate, fatty alcohol-polyoxyethylene ether sodium sulfate, alpha-alkenyl sodium sulfonate, dodecyl dimethyl amine oxide and alkylolamide.
As a further improvement of the invention, the water reducing agent is a combined water reducing agent comprising lignosulfonate and a melamine water reducing agent, and the mass ratio of the lignosulfonate to the melamine water reducing agent is 5: 1-5.
As a further improvement of the invention, the excitant is selected from one or more of sodium hydroxide, calcium hydroxide, sodium silicate, aluminum sulfate, sodium bicarbonate, hexamethylenetetramine and triethanolamine.
The invention further provides a preparation method of the environment-friendly refractory material for buildings, which comprises the following steps:
s1, mixing materials: putting the raw materials into a mixer, firstly mixing at a low speed for 30-50min, then raising the speed to a high speed for mixing for 10-30min, adding 10% of water based on the total weight of the raw materials when the temperature reaches 100 ℃ and 120 ℃, and fully mixing;
s2, extrusion forming: the mixture in the step S1 is put into a double-screw extruder, and extruded into a semi-finished product with the power of 30-50KW at the temperature of 220 ℃ and 240 ℃;
s3, forming: and (5) putting the semi-finished product obtained in the step (S3) into an ice-water mixture at 0 ℃ for cold soaking to obtain the environment-friendly refractory material for the building.
As a further improvement of the invention, the low-speed mixing rotation speed is 300-500r/min, and the high-speed mixing rotation speed is 1000-1500 r/min.
The invention has the following beneficial effects: the invention adopts the foaming agent which almost has no pollution to the environment and the halogen-free flame retardant system, thereby realizing the purpose of environmental protection; through the matching of reaction raw materials such as a foam stabilizer, a foaming agent and the like, the rapid foaming and curing are realized, the spraying process is suitable for the spraying process, and the production efficiency is improved;
the fly ash floating bead is obtained by floating the fly ash which is an industrial solid waste, and has the characteristics of smaller density, good fluidity, corrosion resistance and the like due to the unique hollow spherical structure compared with the fly ash, the graphene oxide is adopted to modify the fly ash floating bead, and hydroxyl, carboxyl and carbonyl on the graphene oxide are chemically bonded with carboxyl and hydroxyl on the fly ash floating bead or are connected through hydrogen bonds, so that a stable compound is formed between the hydroxyl, carboxyl and carbonyl on the graphene oxide and the carboxyl and hydroxyl on the fly ash floating bead, and the mechanical property and the fire resistance of the fly ash floating bead are obviously improved; MgO-Al2O3The ZnO nano powder is prepared by mixing MgO and Al2O3And ZnO are ball-milled and mixed evenly to obtain the compositeThe nano powder can obviously improve the flame retardant property and the heat insulation property of the material; in the synthesis process of the phenolic resin, sodium carboxymethylcellulose and calcium sulfonate are added to modify the performance of the phenolic resin, the calcium atom is taken as a center to improve the crosslinking degree of the phenolic resin, and the sodium carboxymethylcellulose is taken as a branched chain to form the three-dimensional grid-shaped modified phenolic resin, so that the flame retardant and fire resistant performance of the phenolic resin is further improved, the heat preservation coefficient of the phenolic resin is reduced, and the phenolic resin has good heat preservation performance;
the building refractory material has the advantages of small heat conductivity coefficient, light weight, high strength, good thermal shock resistance, high refractoriness (more than 1800 ℃) and the like, thereby having wide application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 shows MgO-Al in example 5 of the present invention2O3SEM image of ZnO nanopowder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
Example 1
The raw materials comprise the following components in parts by weight: 30 parts of modified phenolic resin and MgO-Al2O310 parts of ZnO nano powder, 5 parts of graphene oxide modified fly ash floating bead, 3 parts of glass wool, 1 part of expanded graphite, 0.5 part of triethanolamine, 0.5 part of petroleum ether, 0.1 part of alkylolamide, 1 part of water reducing agent, 10 parts of perlite, 3 parts of ethylenediamine and 1 part of adipic acid2 parts of polycaprolactone diol, 1 part of glycerol triglyceride and 1 part of polyvinyl alcohol.
The water reducing agent is a combined water reducing agent and comprises lignosulfonate and a melamine water reducing agent, wherein the mass ratio of the lignosulfonate to the melamine water reducing agent is 5: 1.
the modified phenolic resin is prepared by the following method: respectively adding 5g of phenol, 0.5g of formaldehyde, 0.01g of catalyst CuCl/Me6-TREN and 0.1g of dispersant polyethylene glycol 400 into a device, stirring and heating to the polycondensation reaction temperature of 95 ℃, after the reaction is carried out for 30min, adding 1g of sodium carboxymethylcellulose and 0.5-1g of calcium sulfonate, continuing to stir and react for 10min, adding 0.1g of cross-linking assistant HMTA, continuing to maintain the original temperature and stirring speed for reaction for 2h, then adjusting the pH value to 2 by using 1mol/L hydrochloric acid solution, continuing to solidify for 1h, stopping heating, adding a large amount of distilled water, stirring and naturally cooling to the room temperature to obtain the modified phenolic resin.
The graphene oxide modified fly ash floating bead is prepared by the following method: weighing 100g of fly ash floating beads with the particle size of 45-75 mu m, washing impurities in the fly ash floating beads by using deionized water, adding the fly ash floating beads into 1.5 wt% of aqueous solution of silane coupling agent KH560, reacting at 80 ℃ for 0.5h, filtering, drying to constant mass, adding the obtained powder into 5 wt% of aqueous solution of graphene oxide, heating to 45 ℃, reacting for 1h, filtering, grinding and uniformly mixing in a mortar, then placing the solid in a muffle furnace, introducing nitrogen into the muffle furnace, roasting at 800 ℃ for 1h, slowly cooling to room temperature, washing the roasted compound with deionized water until the pH of the water before and after washing is close, placing the mixture into a drying box, and drying to constant mass to obtain the graphene oxide modified fly ash floating beads.
MgO-Al2O3the-ZnO nano powder is prepared by the following method: respectively grinding 20g of magnesium oxide, 10g of aluminum oxide and 10g of zinc oxide to be below 100 meshes, uniformly mixing, sending into a muffle furnace under a nitrogen atmosphere condition, heating to 800 ℃, carrying out high-temperature activation sintering for 1h, then sending out, cooling to room temperature, uniformly mixing by adopting a ball milling process to obtain Al with the particle size of 100-2O3-ZnO-CaO nanopowder.
The preparation method of the environment-friendly refractory material for the building comprises the following steps:
s1, mixing materials: putting the raw materials into a mixer, firstly mixing at a low speed for 30min, then raising the speed to a high speed for 10min, adding water accounting for 10 percent of the total weight of the raw materials when the temperature reaches 100 ℃, and fully mixing;
s2, extrusion forming: filling the mixture obtained in the step S1 into a double-screw extruder, and extruding at 220 ℃ and 30KW to obtain a semi-finished product;
s3, forming: and (5) putting the semi-finished product obtained in the step (S3) into an ice-water mixture at 0 ℃ for cold soaking to obtain the environment-friendly refractory material for the building.
In this embodiment, the low-speed mixing rotation speed is 300r/min, and the high-speed mixing rotation speed is 1000 r/min.
Example 2
The raw materials comprise the following components in parts by weight: 70 parts of modified phenolic resin and MgO-Al2O320 parts of ZnO nano powder, 25 parts of graphene oxide modified fly ash floating beads, 10 parts of glass wool, 5 parts of expanded graphite, 1 part of hexamethylenetetramine, 2 parts of n-hexane, 1 part of fatty alcohol-polyoxyethylene ether sodium sulfate, 2 parts of a water reducing agent, 20 parts of perlite, 5 parts of ethylenediamine, 3 parts of adipic acid, 5 parts of polycaprolactone diol, 4 parts of glycerol triglyceride and 4 parts of polyvinyl alcohol.
The water reducing agent is a combined water reducing agent and comprises lignosulfonate and a melamine water reducing agent, wherein the mass ratio of the lignosulfonate to the melamine water reducing agent is 5: 5.
the modified phenolic resin is prepared by the following method: respectively adding 5g of phenol, 1g of formaldehyde, 0.1g of catalyst TEA and 0.5g of dispersant polyvinyl alcohol into a device, stirring and heating to the polycondensation reaction temperature of 95-98 ℃, after the reaction is carried out for 40min, adding 1-3g of sodium carboxymethylcellulose and 1g of calcium sulfonate, continuing to stir and react for 20min, adding 0.2g of crosslinking aid HMTA, continuing to maintain the original temperature and the stirring speed for reaction for 4h, then adjusting the pH value to 2 by using 2mol/L hydrochloric acid solution, continuing to solidify for 2h, stopping heating, adding a large amount of distilled water, stirring and naturally cooling to room temperature to obtain the modified phenolic resin.
The graphene oxide modified fly ash floating bead is prepared by the following method: weighing 100g of fly ash floating beads with the particle size of 45-75 mu m, washing impurities in the fly ash floating beads by deionized water, adding 2.5 wt% of silane coupling agent KH560 aqueous solution, reacting at 85 ℃ for 1h, filtering, drying to constant mass, adding the obtained powder into 15 wt% of graphene oxide aqueous solution, heating to 55 ℃ for reacting for 2h, filtering, grinding and uniformly mixing in a mortar, then placing the solid in a muffle furnace, introducing nitrogen atmosphere, roasting at 900 ℃ for 3h, slowly cooling to room temperature, washing the roasted compound with deionized water until the pH of the water is close before and after washing, placing in a drying box, and drying to constant mass to obtain the graphene oxide modified fly ash floating beads.
MgO-Al2O3the-ZnO nano powder is prepared by the following method: respectively grinding 20g of magnesium oxide, 40g of aluminum oxide and 30g of zinc oxide to be below 100 meshes, uniformly mixing, sending into a muffle furnace under a nitrogen atmosphere condition, heating to 850 ℃, carrying out high-temperature activation sintering for 3h, then sending out, cooling to room temperature, uniformly mixing by adopting a ball milling process to obtain Al with the particle size of 100-2O3-ZnO-CaO nanopowder.
The preparation method of the environment-friendly refractory material for the building comprises the following steps:
s1, mixing materials: putting the raw materials into a mixer, firstly mixing at a low speed for 50min, then raising the speed to a high speed for mixing for 30min, adding water accounting for 10 percent of the total weight of the raw materials when the temperature reaches 120 ℃, and fully mixing;
s2, extrusion forming: filling the mixture obtained in the step S1 into a double-screw extruder, and extruding at 240 ℃ and 50KW to obtain a semi-finished product;
s3, forming: and (5) putting the semi-finished product obtained in the step (S3) into an ice-water mixture at 0 ℃ for cold soaking to obtain the environment-friendly refractory material for the building.
In this embodiment, the medium-low speed mixing rotation speed is 500r/min, and the high-speed mixing rotation speed is 1500 r/min.
Example 3
The raw materials comprise the following components in parts by weight: 40 parts of modified phenolic resin and MgO-Al2O312 parts of ZnO nano powder, 10 parts of graphene oxide modified fly ash floating bead, 4 parts of glass wool, 2 parts of expanded graphite, 0.6 part of sodium bicarbonate and dichloro-bis (dichlorobis)0.7 part of fluoromethane, 0.2 part of α -sodium alkenyl sulfonate, 1.2 parts of water reducing agent, 12 parts of perlite, 3.5 parts of ethylenediamine, 1.5 parts of adipic acid, 3 parts of polycaprolactone diol, 1 part of glycerol triglyceride and 1 part of polyvinyl alcohol.
The water reducing agent is a combined water reducing agent and comprises lignosulfonate and a melamine water reducing agent, wherein the mass ratio of the lignosulfonate to the melamine water reducing agent is 5: 2.
the modified phenolic resin is prepared by the following method: respectively adding 5g of phenol, 0.6g of formaldehyde, 0.02g of dibutyltin diacetate as a catalyst and 0.2g of ethylene-vinyl acetate copolymer as a dispersing agent into a device, stirring and heating to a polycondensation reaction temperature of 96 ℃, adding 1-3g of sodium carboxymethylcellulose and 0.6g of calcium sulfonate after the reaction is carried out for 32min, continuously stirring and reacting for 12min, adding 0.12g of a crosslinking assistant HMTA, continuously maintaining the original temperature and the stirring speed for reaction for 3h, then adjusting the pH value to 2 by using 1.2mol/L hydrochloric acid solution, continuously curing for 1.5h, stopping heating, adding a large amount of distilled water, stirring and naturally cooling to room temperature to obtain the modified phenolic resin.
The graphene oxide modified fly ash floating bead is prepared by the following method: weighing 100g of fly ash floating beads with the particle size of 45-75 mu m, washing impurities in the fly ash floating beads by using deionized water, adding the fly ash floating beads into 1.7 wt% of aqueous solution of silane coupling agent KH560, reacting at 82 ℃ for 0.5h, filtering, drying to constant mass, adding the obtained powder into 7 wt% of aqueous solution of graphene oxide, heating to 47 ℃ for reacting for 1.5h, filtering, grinding and uniformly mixing in a mortar, then placing the solid in a muffle furnace, introducing nitrogen into the muffle furnace, roasting at 820 ℃ for 2h, slowly cooling to room temperature, washing the roasted compound with deionized water until the pH of the water before and after washing is close, and then placing the mixture in a drying box to dry to constant mass to obtain the graphene oxide modified fly ash floating beads.
MgO-Al2O3the-ZnO nano powder is prepared by the following method: respectively grinding 20g of magnesium oxide, 15g of aluminum oxide and 15g of zinc oxide to be below 100 meshes, uniformly mixing, sending into a muffle furnace under a nitrogen atmosphere condition, heating to 810 ℃, carrying out high-temperature activation sintering for 2h, then sending out, cooling to room temperature, and uniformly mixing by adopting a ball milling process to obtain the magnesium-aluminum-zinc-aluminum alloy materialTo 100-500nm of Al2O3-ZnO-CaO nanopowder.
The preparation method of the environment-friendly refractory material for the building comprises the following steps:
s1, mixing materials: putting the raw materials into a mixer, firstly mixing at low speed for 35min, then raising the speed to high speed for mixing for 15min, adding water accounting for 10 percent of the total weight of the raw materials when the temperature reaches 105 ℃, and fully mixing;
s2, extrusion forming: filling the mixture obtained in the step S1 into a double-screw extruder, and extruding at 225 ℃ and 35KW to obtain a semi-finished product;
s3, forming: and (5) putting the semi-finished product obtained in the step (S3) into an ice-water mixture at 0 ℃ for cold soaking to obtain the environment-friendly refractory material for the building.
In this embodiment, the low-speed mixing rotation speed is 350r/min, and the high-speed mixing rotation speed is 1100 r/min.
Example 4
The raw materials comprise the following components in parts by weight: 60 parts of modified phenolic resin and MgO-Al2O318 parts of ZnO nano powder, 22 parts of oxidized graphene modified fly ash floating bead, 8 parts of glass wool, 4 parts of expanded graphite, 0.9 part of sodium silicate, 1.5 parts of trifluorochloromethane, 0.8 part of cellulose, 1.8 parts of a water reducing agent, 17 parts of perlite, 4.5 parts of ethylenediamine, 2.5 parts of adipic acid, 5 parts of polycaprolactone diol, 3 parts of glycerol triglycerate ester and 3 parts of polyvinyl alcohol.
The water reducing agent is a combined water reducing agent and comprises lignosulfonate and a melamine water reducing agent, wherein the mass ratio of the lignosulfonate to the melamine water reducing agent is 5: 4;
the modified phenolic resin is prepared by the following method: respectively adding 5g of phenol, 0.8g of formaldehyde, 0.08g of catalyst vanadium dichloride and 0.4g of dispersant ethylene-acrylic acid copolymer into a device, stirring and heating to the polycondensation reaction temperature of 97 ℃, after the reaction is carried out for 38min, adding 2g of sodium carboxymethylcellulose and 0.9g of calcium sulfonate, continuing to stir and react for 10-20min, adding 0.18g of crosslinking aid HMTA, continuing to maintain the original temperature and the stirring speed for reaction for 3h, then adjusting the pH value to 2 by using 1.5mol/L hydrochloric acid solution, continuing to solidify for 1.5h, stopping heating, adding a large amount of distilled water, stirring and naturally cooling to the room temperature to obtain the modified phenolic resin.
The graphene oxide modified fly ash floating bead is prepared by the following method: weighing 100g of fly ash floating beads with the particle size of 45-75 mu m, washing impurities in the fly ash floating beads by using deionized water, adding 2.2 wt% of silane coupling agent KH560 aqueous solution, reacting at 84 ℃ for 1h, filtering, drying to constant mass, adding the obtained powder into 12 wt% of graphene oxide aqueous solution, heating to 52 ℃ for reacting for 1.5h, filtering, grinding and uniformly mixing in a mortar, then placing the solid in a muffle furnace, introducing nitrogen, roasting at 870 ℃ for 2h, slowly cooling to room temperature, washing the roasted compound with the deionized water until the pH of the water before and after washing is close, placing in a drying box, and drying to constant mass to obtain the graphene oxide modified fly ash floating beads.
MgO-Al2O3the-ZnO nano powder is prepared by the following method: respectively grinding 20g of magnesium oxide, 35g of aluminum oxide and 25g of zinc oxide to be below 100 meshes, uniformly mixing, feeding into a muffle furnace under a nitrogen atmosphere condition, heating to 840 ℃, carrying out high-temperature activation sintering for 2h, cooling to room temperature, uniformly mixing by adopting a ball milling process to obtain Al with the particle size of 100-2O3-ZnO-CaO nanopowder.
The preparation method of the environment-friendly refractory material for the building comprises the following steps:
s1, mixing materials: putting the raw materials into a mixer, firstly mixing at a low speed for 45min, then raising the speed to a high speed for mixing for 25min, adding water accounting for 10 percent of the total weight of the raw materials when the temperature reaches 115 ℃, and fully mixing;
s2, extrusion forming: filling the mixture obtained in the step S1 into a double-screw extruder, and extruding at 235 ℃ and 45KW to obtain a semi-finished product;
s3, forming: and (5) putting the semi-finished product obtained in the step (S3) into an ice-water mixture at 0 ℃ for cold soaking to obtain the environment-friendly refractory material for the building.
In this embodiment, the medium-low speed mixing rotation speed is 450r/min, and the high-speed mixing rotation speed is 1300 r/min.
Example 5
The raw materials comprise the following components in parts by weight: 50 parts of modified phenolic resin、MgO-Al2O316 parts of ZnO nano powder, 17 parts of graphene oxide modified fly ash floating beads, 5 parts of glass wool, 3 parts of expanded graphite, 0.7 part of sodium hydroxide, 1 part of calcium carbonate, 0.6 part of polyvinyl alcohol, 1.6 parts of a water reducing agent, 15 parts of perlite, 4 parts of ethylenediamine, 2 parts of adipic acid, 4 parts of polycaprolactone diol, 2 parts of glycerol triglyceride and 2 parts of polyvinyl alcohol.
The water reducing agent is a combined water reducing agent and comprises lignosulfonate and a melamine water reducing agent, wherein the mass ratio of the lignosulfonate to the melamine water reducing agent is 5: 3.
the modified phenolic resin is prepared by the following method: respectively adding 5g of phenol, 0.75g of formaldehyde, 0.05g of catalyst N, N-dimethylanilinium tetrakis (pentafluorophenyl) borate and 0.35g of dispersant polyvinyl alcohol into a device, stirring and heating to the polycondensation reaction temperature of 97 ℃, after the reaction is carried out for 35min, adding 2g of sodium carboxymethylcellulose and 0.7g of calcium sulfonate, continuing to stir and react for 15min, adding 0.15g of cross-linking assistant HMTA, continuing to maintain the original temperature and the stirring speed for reaction for 3h, then adjusting the pH value to 2 by using 1.5mol/L hydrochloric acid solution, continuing to solidify for 1.5h, stopping heating, adding a large amount of distilled water, stirring and naturally cooling to room temperature to obtain the modified phenolic resin.
The graphene oxide modified fly ash floating bead is prepared by the following method: weighing 100g of fly ash floating beads with the particle size of 45-75 mu m, washing impurities in the fly ash floating beads by using deionized water, adding 2 wt% of silane coupling agent KH560 aqueous solution, reacting at 83 ℃ for 0.5h, filtering, drying to constant mass, adding the obtained powder into 10 wt% of graphene oxide aqueous solution, heating to 50 ℃ for reacting for 1.5h, filtering, grinding and uniformly mixing in a mortar, then placing the solid in a muffle furnace, introducing nitrogen, roasting at 850 ℃ for 2h, slowly cooling to room temperature, washing the roasted compound with the deionized water until the pH of the water before and after washing is close, placing in a drying box, and drying to constant mass to obtain the graphene oxide modified fly ash floating beads.
MgO-Al2O3the-ZnO nano powder is prepared by the following method: respectively grinding 20g of magnesium oxide, 25g of aluminum oxide and 20g of zinc oxide to below 100 meshes, and mixingUniformly feeding the mixture into a muffle furnace under the nitrogen atmosphere condition, heating the mixture to 825 ℃, carrying out high-temperature activation sintering for 2 hours, then cooling the mixture to room temperature, uniformly mixing the mixture by adopting a ball milling process to obtain Al with the particle size of 100-500nm2O3-ZnO-CaO nanopowder. The SEM picture is shown in FIG. 1, from which it can be seen that the Al2O3the-ZnO-CaO nano powder is composed of nano particles with uniform granularity.
The preparation method of the environment-friendly refractory material for the building comprises the following steps:
s1, mixing materials: putting the raw materials into a mixer, firstly mixing at a low speed for 40min, then raising the speed to a high speed for 20min, adding water accounting for 10 percent of the total weight of the raw materials when the temperature reaches 110 ℃, and fully mixing;
s2, extrusion forming: filling the mixture obtained in the step S1 into a double-screw extruder, and extruding at 230 ℃ and 40KW to obtain a semi-finished product;
s3, forming: and (5) putting the semi-finished product obtained in the step (S3) into an ice-water mixture at 0 ℃ for cold soaking to obtain the environment-friendly refractory material for the building.
In this embodiment, the low-speed mixing rotation speed is 400r/min, and the high-speed mixing rotation speed is 1250 r/min.
Comparative example 1
Compared with example 5, the modified phenolic resin is not added, and other conditions are not changed.
The raw materials comprise the following components in parts by weight: MgO-Al2O316 parts of ZnO nano powder, 67 parts of graphene oxide modified fly ash floating beads, 5 parts of glass wool, 3 parts of expanded graphite, 0.7 part of sodium hydroxide, 1 part of calcium carbonate, 0.6 part of polyvinyl alcohol, 1.6 parts of a water reducing agent, 15 parts of perlite, 4 parts of ethylenediamine, 2 parts of adipic acid, 4 parts of polycaprolactone diol, 2 parts of glycerol triglyceride and 2 parts of polyvinyl alcohol.
The water reducing agent is a combined water reducing agent and comprises lignosulfonate and a melamine water reducing agent, wherein the mass ratio of the lignosulfonate to the melamine water reducing agent is 5: 3.
the graphene oxide modified fly ash floating bead is prepared by the following method: weighing 100g of fly ash floating beads with the particle size of 45-75 mu m, washing impurities in the fly ash floating beads by using deionized water, adding 2 wt% of silane coupling agent KH560 aqueous solution, reacting at 83 ℃ for 0.5h, filtering, drying to constant mass, adding the obtained powder into 10 wt% of graphene oxide aqueous solution, heating to 50 ℃ for reacting for 1.5h, filtering, grinding and uniformly mixing in a mortar, then placing the solid in a muffle furnace, introducing nitrogen, roasting at 850 ℃ for 2h, slowly cooling to room temperature, washing the roasted compound with the deionized water until the pH of the water before and after washing is close, placing in a drying box, and drying to constant mass to obtain the graphene oxide modified fly ash floating beads.
MgO-Al2O3the-ZnO nano powder is prepared by the following method: respectively grinding 20g of magnesium oxide, 25g of aluminum oxide and 20g of zinc oxide to be below 100 meshes, uniformly mixing, feeding into a muffle furnace under a nitrogen atmosphere condition, heating to 825 ℃, carrying out high-temperature activation sintering for 2h, cooling to room temperature, uniformly mixing by adopting a ball milling process to obtain Al with the particle size of 100-2O3-ZnO-CaO nanopowder.
The preparation method of the environment-friendly refractory material for the building comprises the following steps:
s1, mixing materials: putting the raw materials into a mixer, firstly mixing at a low speed for 40min, then raising the speed to a high speed for 20min, adding water accounting for 10 percent of the total weight of the raw materials when the temperature reaches 110 ℃, and fully mixing;
s2, extrusion forming: filling the mixture obtained in the step S1 into a double-screw extruder, and extruding at 230 ℃ and 40KW to obtain a semi-finished product;
s3, forming: and (5) putting the semi-finished product obtained in the step (S3) into an ice-water mixture at 0 ℃ for cold soaking to obtain the environment-friendly refractory material for the building.
In this embodiment, the low-speed mixing rotation speed is 400r/min, and the high-speed mixing rotation speed is 1250 r/min.
Comparative example 2
Compared with the example 5, the fly ash floating bead modified by the graphene oxide is not added, and other conditions are not changed.
The raw materials comprise the following components in parts by weight: 67 parts of modified phenolic resin and MgO-Al2O316 parts of ZnO nano powder, 5 parts of glass wool, 3 parts of expanded graphite, 0.7 part of sodium hydroxide and carbon1 part of calcium carbonate, 0.6 part of polyvinyl alcohol, 1.6 parts of a water reducing agent, 15 parts of perlite, 4 parts of ethylenediamine, 2 parts of adipic acid, 4 parts of polycaprolactone diol, 2 parts of glycerol triglyceride and 2 parts of polyvinyl alcohol.
The water reducing agent is a combined water reducing agent and comprises lignosulfonate and a melamine water reducing agent, wherein the mass ratio of the lignosulfonate to the melamine water reducing agent is 5: 3.
the modified phenolic resin is prepared by the following method: respectively adding 5g of phenol, 0.75g of formaldehyde, 0.05g of catalyst N, N-dimethylanilinium tetrakis (pentafluorophenyl) borate and 0.35g of dispersant polyvinyl alcohol into a device, stirring and heating to the polycondensation reaction temperature of 97 ℃, after the reaction is carried out for 35min, adding 2g of sodium carboxymethylcellulose and 0.7g of calcium sulfonate, continuing to stir and react for 15min, adding 0.15g of cross-linking assistant HMTA, continuing to maintain the original temperature and the stirring speed for reaction for 3h, then adjusting the pH value to 2 by using 1.5mol/L hydrochloric acid solution, continuing to solidify for 1.5h, stopping heating, adding a large amount of distilled water, stirring and naturally cooling to room temperature to obtain the modified phenolic resin.
MgO-Al2O3the-ZnO nano powder is prepared by the following method: respectively grinding 20g of magnesium oxide, 25g of aluminum oxide and 20g of zinc oxide to be below 100 meshes, uniformly mixing, feeding into a muffle furnace under a nitrogen atmosphere condition, heating to 825 ℃, carrying out high-temperature activation sintering for 2h, cooling to room temperature, uniformly mixing by adopting a ball milling process to obtain Al with the particle size of 100-2O3-ZnO-CaO nanopowder.
The preparation method of the environment-friendly refractory material for the building comprises the following steps:
s1, mixing materials: putting the raw materials into a mixer, firstly mixing at a low speed for 40min, then raising the speed to a high speed for 20min, adding water accounting for 10 percent of the total weight of the raw materials when the temperature reaches 110 ℃, and fully mixing;
s2, extrusion forming: filling the mixture obtained in the step S1 into a double-screw extruder, and extruding at 230 ℃ and 40KW to obtain a semi-finished product;
s3, forming: and (5) putting the semi-finished product obtained in the step (S3) into an ice-water mixture at 0 ℃ for cold soaking to obtain the environment-friendly refractory material for the building.
In this embodiment, the low-speed mixing rotation speed is 400r/min, and the high-speed mixing rotation speed is 1250 r/min.
Test example 1
The environmental-friendly fire-resistant materials for buildings and the fire-resistant materials for buildings, which are prepared in the embodiments 1 to 5 and the comparative examples 1 and 2, are subjected to performance tests according to the acceptance criteria for construction quality of building energy-saving engineering GB50411-2014, and the results are shown in Table 1.
TABLE 1
Group of Combustion performance Oxygen index Thermal conductivity (W/(m)2·K)) Curing time(s) Compressive strength (MPa)
Example 1 A 32 0.015 30 2.25
Example 2 A 33 0.012 30 2.32
Example 3 A 32 0.013 27 2.12
Example 4 A 35 0.014 32 2.45
Example 5 A 35 0.010 25 2.47
Comparative example 1 B1 22 0.047 57 1.02
Comparative example 2 B1 20 0.052 65 0.95
Is commercially available B1 25 0.035 45 1.12
As can be seen from the comparison between examples 1 to 5 and comparative examples 1 to 2 and the commercial products, the environment-friendly refractory materials for construction obtained in examples 1 to 5, which meet the scope defined in the present application, have excellent flame retardancy, heat insulation and workability, and are less environmentally harmful. Compared with the comparative example 1, the modified phenolic resin is not added, so that the heat conductivity coefficient is high, the oxygen index is small, the combustion performance is obviously reduced, and the fire-resistant and heat-insulating requirements of buildings are difficult to meet. In comparative example 2, only the fly ash floating bead modified by graphene oxide is not added, so that the compression resistance is reduced, the heat conductivity coefficient is increased, and the combustion performance is reduced. Therefore, the modified phenolic resin and the graphene oxide modified fly ash floating bead also have a synergistic effect.
Compared with the prior art, the invention adopts the foaming agent which hardly pollutes the environment and the halogen-free flame retardant system, thereby realizing the purpose of environmental protection; through the matching of reaction raw materials such as a foam stabilizer, a foaming agent and the like, the rapid foaming and curing are realized, the spraying process is suitable for the spraying process, and the production efficiency is improved;
the fly ash floating bead is obtained by floating the fly ash which is an industrial solid waste, and has the characteristics of smaller density, good fluidity, corrosion resistance and the like due to the unique hollow spherical structure compared with the fly ash, the graphene oxide is adopted to modify the fly ash floating bead, and hydroxyl, carboxyl and carbonyl on the graphene oxide are chemically bonded with carboxyl and hydroxyl on the fly ash floating bead or are connected through hydrogen bonds, so that a stable compound is formed between the hydroxyl, carboxyl and carbonyl on the graphene oxide and the carboxyl and hydroxyl on the fly ash floating bead, and the mechanical property and the fire resistance of the fly ash floating bead are obviously improved; MgO-Al2O3The ZnO nano powder is prepared by mixing MgO and Al2O3And ZnO are ball-milled and mixed uniformly to obtain composite nano powder, so that the flame retardant property and the heat insulation property of the material are improved remarkably; during the synthesis of phenolic resin, sodium carboxymethyl cellulose andthe calcium sulfonate takes the performance of the modified phenolic resin, the calcium atom as the center to improve the crosslinking degree of the phenolic resin, and the sodium carboxymethyl cellulose as the branched chain to form the three-dimensional grid-shaped modified phenolic resin, so that the flame-retardant and fire-resistant performance of the modified phenolic resin is further improved, the heat-insulating coefficient of the modified phenolic resin is also reduced, and the modified phenolic resin has good heat-insulating performance;
the building refractory material has the advantages of small heat conductivity coefficient, light weight, high strength, good thermal shock resistance, high refractoriness (more than 1800 ℃) and the like, thereby having wide application prospect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The environment-friendly refractory material for the building is characterized by being prepared from the following raw materials: modified phenolic resin, MgO-Al2O3-ZnO nanopowder, graphene oxide modified fly ash floating beads, glass wool, expanded graphite, an activator, a foaming agent, a foam stabilizer, a water reducing agent, perlite, ethylenediamine, adipic acid, polycaprolactone diol, glycerol triglycerate, polyvinyl alcohol;
the modified phenolic resin is prepared by the following method: respectively adding phenol, formaldehyde, a catalyst and a dispersing agent into a device, stirring and heating to the polycondensation reaction temperature of 95-98 ℃, after the reaction is carried out for 30-40min, adding sodium carboxymethylcellulose and calcium sulfonate, continuing to stir and react for 10-20min, adding a crosslinking assistant HMTA, continuing to maintain the original temperature and the stirring speed for reaction for 2-4h, then adjusting the pH value to 2 by using 1-2mol/L hydrochloric acid solution, continuing to solidify for 1-2h, stopping heating, adding a large amount of distilled water, stirring and naturally cooling to room temperature to obtain modified phenolic resin;
the mass ratio of the phenol to the formaldehyde to the catalyst to the dispersing agent to the cross-linking auxiliary agent HMTA to the sodium carboxymethylcellulose to the calcium sulfonate is 5:0.5-1:0.01-0.1:0.1-0.5:0.1-0.2:1-3: 0.5-1;
the catalyst is selected from one or a mixture of more of CuCl/Me6-TREN, TEA, dibutyltin diacetate, N, N-dimethylanilinium tetrakis (pentafluorophenyl) borate, cyclopentadienyl vanadium dichloride, N, N, N '-trimethyl-N' - (2-hydroxyethyl) bis (2-aminoethyl) ether and (indenyl) titanium trichloride;
the dispersing agent is selected from one or more of polyvinyl alcohol, microcrystalline wax, calcium stearate, cadmium stearate, magnesium stearate, copper stearate, ethylene-acrylic acid copolymer, ethylene-vinyl acetate copolymer, polyethylene glycol 200 and polyethylene glycol 400;
the graphene oxide modified fly ash floating bead is prepared by the following method: weighing fly ash floating beads with the particle size of 45-75 mu m, washing impurities in the fly ash floating beads by deionized water, adding the fly ash floating beads into 1.5-2.5 wt% of silane coupling agent KH560 aqueous solution, reacting at 80-85 ℃ for 0.5-1h, filtering, drying to constant mass, adding the obtained powder into 5-15 wt% of graphene oxide aqueous solution, heating to 45-55 ℃ for reacting for 1-2h, filtering, grinding and uniformly mixing in a mortar, then placing the solid in a muffle furnace, introducing nitrogen atmosphere, roasting at 800-900 ℃ for 1-3h, slowly cooling to room temperature, washing the roasted compound with deionized water until the pH of the water before and after washing is similar, placing in a drying box, and drying to constant mass to obtain the graphene oxide modified fly ash floating beads;
the MgO-Al2O3the-ZnO nano powder is prepared by the following method: respectively grinding magnesium oxide, aluminum oxide and zinc oxide to below 100 meshes, uniformly mixing, feeding into a muffle furnace under a nitrogen atmosphere condition, heating to 850 ℃ at a high temperature, carrying out high-temperature activation sintering for 1-3h, cooling to room temperature, uniformly mixing by adopting a ball milling process to obtain Al with the particle size of 100-2O3-ZnO-CaO nanopowder;
the mass ratio of the magnesium oxide to the aluminum oxide to the zinc oxide is 2:1-4: 1-3.
2. The environment-friendly refractory material for buildings as claimed in claim 1, which is prepared from the following raw materials in parts by weight: 30-70 parts of modified phenolic resin and MgO-Al2O310-20 parts of-ZnO nano powder and graphene oxide modified fly ash5-25 parts of floating bead, 3-10 parts of glass wool, 1-5 parts of expanded graphite, 0.5-1 part of exciting agent, 0.5-2 parts of foaming agent, 0.1-1 part of foam stabilizer, 1-2 parts of water reducing agent, 10-20 parts of perlite, 3-5 parts of ethylenediamine, 1-3 parts of adipic acid, 2-5 parts of polycaprolactone diol, 1-4 parts of glycerol triglyceride and 1-4 parts of polyvinyl alcohol.
3. The environment-friendly refractory material for buildings as claimed in claim 2, which is prepared from the following raw materials in parts by weight: 40-60 parts of modified phenolic resin and MgO-Al2O312-18 parts of ZnO nano powder, 10-22 parts of graphene oxide modified fly ash floating bead, 4-8 parts of glass wool, 2-4 parts of expanded graphite, 0.6-0.9 part of exciting agent, 0.7-1.5 parts of foaming agent, 0.2-0.8 part of foam stabilizer, 1.2-1.8 parts of water reducing agent, 12-17 parts of perlite, 3.5-4.5 parts of ethylenediamine, 1.5-2.5 parts of adipic acid, 3-5 parts of polycaprolactone diol, 1-3 parts of glycerol triglycerate and 1-3 parts of polyvinyl alcohol.
4. The environment-friendly refractory material for buildings as claimed in claim 3, which is prepared from the following raw materials in parts by weight: 50 parts of modified phenolic resin and MgO-Al2O316 parts of ZnO nano powder, 17 parts of oxidized graphene modified fly ash floating beads, 5 parts of glass wool, 3 parts of expanded graphite, 0.7 part of exciting agent, 1 part of foaming agent, 0.6 part of foam stabilizer, 1.6 parts of water reducing agent, 15 parts of perlite, 4 parts of ethylenediamine, 2 parts of adipic acid, 4 parts of polycaprolactone diol, 2 parts of glycerol triglyceride and 2 parts of polyvinyl alcohol.
5. The environment-friendly building refractory according to claim 1, wherein the foaming agent is selected from one or more of calcium carbonate, magnesium carbonate, sodium bicarbonate, sodium silicate, silicon carbide, carbon black, n-pentane, n-hexane, n-heptane, petroleum ether, chlorotrifluoromethane, dichlorodifluoromethane and dichlorotetrafluoroethane.
6. The environment-friendly fire-resistant material for buildings according to claim 1, wherein the foam stabilizer is one or a mixture of several selected from polyacrylamide, polyvinyl alcohol, protein, polypeptide, starch, cellulose, sodium dodecyl sulfate, sodium fatty alcohol-polyoxyethylene ether sulfate, sodium alpha-alkenyl sulfonate, dodecyl dimethyl amine oxide and alkylolamide.
7. The environment-friendly refractory material for buildings according to claim 1, wherein the water reducing agent is a combined water reducing agent comprising lignosulfonate and a melamine water reducing agent, and the mass ratio of the lignosulfonate to the melamine water reducing agent is 5: 1-5.
8. The environment-friendly fire resistant material for building as claimed in claim 1, wherein the activator is one or more selected from sodium hydroxide, calcium hydroxide, sodium silicate, aluminum sulfate, sodium bicarbonate, hexamethylenetetramine, and triethanolamine.
9. A method for preparing the environment-friendly building refractory material as claimed in any one of claims 1 to 8, comprising the steps of:
s1, mixing materials: putting the raw materials into a mixer, firstly mixing at a low speed for 30-50min, then raising the speed to a high speed for mixing for 10-30min, adding 10% of water based on the total weight of the raw materials when the temperature reaches 100 ℃ and 120 ℃, and fully mixing;
s2, extrusion forming: the mixture in the step S1 is put into a double-screw extruder, and extruded into a semi-finished product with the power of 30-50KW at the temperature of 220 ℃ and 240 ℃;
s3, forming: and (5) putting the semi-finished product obtained in the step (S3) into an ice-water mixture at 0 ℃ for cold soaking to obtain the environment-friendly refractory material for the building.
10. The method as claimed in claim 9, wherein the low-speed mixing speed is 300-500r/min, and the high-speed mixing speed is 1000-1500 r/min.
CN202010598275.5A 2020-06-28 2020-06-28 Environment-friendly refractory material for buildings and preparation method thereof Withdrawn CN111647251A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109592972A (en) * 2018-12-24 2019-04-09 长兴兴鹰新型耐火建材有限公司 A kind of cement kiln synergic processing solid waste anti-erosion wear-resistant castable
CN112341206A (en) * 2020-11-05 2021-02-09 衡阳凯新特种材料科技有限公司 Forming method of rare earth praseodymium-holmium-stabilized silicon nitride ceramic
CN115093194A (en) * 2022-08-24 2022-09-23 江苏夸迪安防集团有限公司 Antibacterial floating bead fireproof heat-insulation plate and preparation method and application thereof
CN115160014A (en) * 2022-06-22 2022-10-11 九江学院 Environment-friendly heat-preservation decorative foamed ceramic plate and preparation method thereof
CN116693236A (en) * 2023-07-28 2023-09-05 山东万能空调设备有限公司 Energy-saving environment-friendly floating bead fireproof air duct board and preparation method thereof
CN117162638A (en) * 2023-11-02 2023-12-05 山东森荣新材料股份有限公司 Preparation method of expanded polytetrafluoroethylene composite heat-insulating film

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109592972A (en) * 2018-12-24 2019-04-09 长兴兴鹰新型耐火建材有限公司 A kind of cement kiln synergic processing solid waste anti-erosion wear-resistant castable
CN112341206A (en) * 2020-11-05 2021-02-09 衡阳凯新特种材料科技有限公司 Forming method of rare earth praseodymium-holmium-stabilized silicon nitride ceramic
CN115160014A (en) * 2022-06-22 2022-10-11 九江学院 Environment-friendly heat-preservation decorative foamed ceramic plate and preparation method thereof
CN115093194A (en) * 2022-08-24 2022-09-23 江苏夸迪安防集团有限公司 Antibacterial floating bead fireproof heat-insulation plate and preparation method and application thereof
CN115093194B (en) * 2022-08-24 2022-11-08 江苏夸迪安防集团有限公司 Antibacterial floating bead fireproof heat-insulation plate and preparation method and application thereof
CN116693236A (en) * 2023-07-28 2023-09-05 山东万能空调设备有限公司 Energy-saving environment-friendly floating bead fireproof air duct board and preparation method thereof
CN116693236B (en) * 2023-07-28 2023-10-03 山东万能空调设备有限公司 Energy-saving environment-friendly floating bead fireproof air duct board and preparation method thereof
CN117162638A (en) * 2023-11-02 2023-12-05 山东森荣新材料股份有限公司 Preparation method of expanded polytetrafluoroethylene composite heat-insulating film
CN117162638B (en) * 2023-11-02 2023-12-29 山东森荣新材料股份有限公司 Preparation method of expanded polytetrafluoroethylene composite heat-insulating film

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Application publication date: 20200911