CN108222401B - Composite insulation board integrated board and preparation process - Google Patents
Composite insulation board integrated board and preparation process Download PDFInfo
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- CN108222401B CN108222401B CN201810111078.9A CN201810111078A CN108222401B CN 108222401 B CN108222401 B CN 108222401B CN 201810111078 A CN201810111078 A CN 201810111078A CN 108222401 B CN108222401 B CN 108222401B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0875—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
Abstract
The invention discloses an integrated plate of a composite insulation board, which comprises an insulation core material layer, a mortar composite layer and a glass fiber net cloth layer, and is characterized in that the mortar composite layer is positioned at the inner side and the outer side of the insulation core material layer, and the glass fiber net cloth layer is positioned at the outer side of the mortar composite layer; the thickness of the mortar composite layer positioned on the inner side is 5-10mm, the thickness of the mortar composite layer positioned on the outer side is 20-30mm, and the thickness of the heat-insulating core material layer is 35-55 mm. The composite insulation board disclosed by the invention has the advantages that the internal pressure is generated by foaming, the super-strong self-adhesive property of polyurethane enables the insulation core material layer to be firmly bonded with the mortar composite layer, the manufacturing method is simple in process, the industrialized and large-scale continuous production can be realized, the quality is ensured, the manufacturing cost is reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of insulation boards, in particular to an integrated board of a composite insulation board and a preparation process.
Background
With the increasingly outstanding contradiction between the high-speed development of economy and energy shortage, energy conservation becomes a basic national policy in China. Particularly, building energy consumption is high, energy waste is serious, the nation already makes a mandatory standard for saving energy by 50% for building energy, and more places begin to execute the mandatory standard for saving energy by 65% for buildings. However, various wall insulation technologies used in the domestic external wall insulation market have various defects. At present, the wall heat-insulating materials in China are mainly divided into two categories of polystyrene and polyurethane.
The polyurethane heat-insulating material has excellent performance, overcomes the defects of polystyrene heat-insulating materials, and is increasingly applied to the field of building heat insulation. Polyurethane materials are widely used in the sectors of electromechanics, ships, civil engineering and construction, light industry and the like due to the excellent properties of foamability elasticity, wear resistance, low temperature resistance, solvent resistance, biological aging resistance and the like, and the products are in a variety. The rapid development of the polyurethane industry increases the yield, and thus, a great deal of waste is generated, including leftover materials in production and various polyurethane materials which are used and wasted due to aging, and the price of raw materials is high, so that the recycling of waste polyurethane products becomes a hot point of interest in the industry.
Based on the research, researchers of the company provide a polyurethane composite insulation board and a production process, waste polyurethane products are effectively utilized and are prepared into an insulation core material through scientific treatment and reasonable proportioning; meanwhile, the thermal insulation mortar is prepared by utilizing a large amount of industrial waste coal ash efficiently and materials such as cement, has great significance for saving resources, saving energy and protecting environment, and accords with the sustainable development strategy of the building industry.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide an integrated plate of a composite insulation board and a preparation process thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
the composite insulation board integrated board comprises an insulation core material layer, a mortar composite layer and a glass fiber net cloth layer, wherein the mortar composite layer is positioned on the inner side and the outer side of the insulation core material layer, and the glass fiber net cloth layer is positioned on the outer side of the mortar composite layer; the thickness of the mortar composite layer positioned on the inner side is 5-10mm, the thickness of the mortar composite layer positioned on the outer side is 20-30mm, and the thickness of the heat-insulating core material layer is 35-55 mm.
Above-mentioned composite insulation board integration board, the heat preservation core material layer is formed by following material preparation, is the part by weight: 155-195 parts of waste polyurethane product, 60-90 parts of ethylene glycol, 7-11 parts of triisopropoxyaluminum, 50-60 parts of expanded vermiculite, 30-45 parts of ash calcium powder, 15-20 parts of sodium nitrite, 9-13 parts of potassium titanate powder, 10-14 parts of paraffin oil, 2-7 parts of cobalt isooctanoate and 18-30 parts of water.
Preferably, the heat-insulating core material layer is prepared from the following materials in parts by weight: 175 parts of waste polyurethane product, 75 parts of ethylene glycol, 9 parts of triisopropoxyaluminum, 55 parts of expanded vermiculite, 40 parts of ash calcium powder, 18 parts of sodium nitrite, 11 parts of potassium titanate powder, 12 parts of paraffin oil, 4 parts of cobalt isooctanoate, 10-13 parts of silicone oil foam stabilizer and 25 parts of water.
The preparation method of the heat insulation core material of the composite heat insulation board integrated board comprises the following steps:
(1) crushing waste polyurethane products, placing the crushed waste polyurethane products into a reaction container, adding ethylene glycol and triisopropoxyaluminum, heating and stirring the mixture for 2 to 4 hours at the temperature of 160 ℃ with 120 DEG, cooling the mixture to room temperature, adjusting the product to be neutral, and sequentially washing the product with water and distilling the product under reduced pressure to obtain a polyurethane degradation product for later use;
(2) placing the expanded vermiculite in a ball mill for grinding and crushing at the temperature of 100-plus-material 120 ℃ for 40 minutes, taking out the expanded vermiculite, placing the expanded vermiculite and the ash calcium powder in the ball mill for grinding and crushing, and sieving the ground expanded vermiculite and the ash calcium powder by a 200-plus-material 400-mesh sieve to obtain mixed powder for later use;
(3) adding water into a reaction kettle, sequentially adding sodium nitrite, potassium titanate powder and cobalt isooctanoate, starting a stirring device, stirring at the stirring speed of 300-500r/min at 115 ℃ for 60-90 minutes, then adding the mixed powder and paraffin oil obtained in the step (2), keeping the same stirring speed, and continuing stirring for 50 minutes to prepare slurry which is fine in bubbles and has certain bonding film forming capacity for later use;
(4) and (2) finally, adding the polyurethane degradation product obtained in the step (1) and the silicone oil foam stabilizer into a reaction kettle, stirring and mixing uniformly, injecting the mixture into a mold for foaming when the mixture in the reaction kettle generates bubbles and the color of the bubbles is white, and curing at high temperature to obtain the polyurethane heat-insulating core material.
The composite insulation board integrated board is characterized in that the mortar composite layer is prepared from the following materials in parts by weight: 10-20 parts of cement, 15-30 parts of coal ash, 30-50 parts of diatomite, 25-45 parts of aluminum silicate, 10-20 parts of magnesium silicate, 5-13 parts of carbon cellulose, 3-15 parts of vinyl acetate, 3-10 parts of dimethylolpropionic acid, 1-5 parts of latex powder and 20-40 parts of water.
Preferably, the mortar composite layer is prepared from the following materials in parts by weight: 15 parts of cement, 24 parts of coal ash, 40 parts of diatomite, 35 parts of aluminum silicate, 15 parts of magnesium silicate, 10 parts of carbon cellulose, 8 parts of vinyl acetate, 6 parts of dimethylolpropionic acid, 2.5 parts of latex powder and 30 parts of water.
The preparation method of the mortar composite layer of the composite insulation board integrated board comprises the following steps:
(1) placing cement, coal ash and diatomite in a pulverizer, adjusting the rotating speed to 80-200r/min, and pulverizing for 3-7 hours to make the granularity be 0.5-0.8mm, so as to obtain a mixed powder for later use;
(2) placing the mixed powder grinding material obtained in the step (1) into a reaction kettle, adding water, aluminum silicate, magnesium silicate and vinyl acetate into the reaction kettle, heating to 100-;
(3) and (3) injecting the slurry obtained in the step (2) into a mold, baking for 10-14 hours at 50-70 ℃, demolding, and trimming to obtain the product.
The composite insulation board is formed by pressing and integrating an insulation core material layer, a mortar composite layer and a glass fiber mesh fabric layer.
The invention has the beneficial effects that:
(1) the waste polyurethane product is effectively utilized, and the heat-insulation core material is prepared by adjusting the system and the formula of polyurethane, the proportion and the length of reinforced fibers and the thickness of a surface layer; the heat insulation effect of the heat insulation core material is enhanced;
(2) the thermal insulation mortar is prepared by utilizing industrial waste coal ash and cement and other materials in a large amount and high efficiency, the combustion performance level of the thermal insulation mortar reaches A2 level, and the flame retardant effect is obvious; the high-strength heat-insulating material has higher compressive strength and heat-insulating effect;
(3) the composite insulation board disclosed by the invention has the advantages that the internal pressure is generated by foaming, the super-strong self-adhesive property of polyurethane enables the insulation core material layer to be firmly bonded with the mortar composite layer, the manufacturing method is simple in process, the industrialized and large-scale continuous production can be realized, the quality is ensured, the manufacturing cost is reduced, and the production efficiency is improved.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the overall structure of the composite insulation board integrated board of the present invention.
In the figure: 1-heat preservation core material layer, 2-mortar composite layer and 3-glass fiber net cloth layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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 composite insulation board integrated board in the embodiment 1 has a structure shown in fig. 1, and comprises an insulation core material layer, a mortar composite layer and a glass fiber net cloth layer, wherein the mortar composite layer is positioned on the inner side and the outer side of the insulation core material layer, and the glass fiber net cloth layer is positioned on the outer side of the mortar composite layer; the thickness of the mortar composite layer positioned on the inner side is 5mm, the thickness of the mortar composite layer positioned on the outer side is 20mm, and the thickness of the heat-insulating core material layer is 35 mm; the composite insulation board is formed by pressing and integrating an insulation core material layer, a mortar composite layer and a glass fiber mesh fabric layer.
Above-mentioned composite insulation board integration board, the heat preservation core material layer is formed by following material preparation, is the part by weight: 155 parts of waste polyurethane product, 60 parts of ethylene glycol, 7 parts of triisopropoxyaluminum, 50 parts of expanded vermiculite, 30 parts of ash calcium powder, 15 parts of sodium nitrite, 9 parts of potassium titanate powder, 10 parts of paraffin oil, 2 parts of cobalt isooctanoate and 18 parts of water; the preparation method of the heat-insulation core material comprises the following steps:
(1) crushing waste polyurethane products, placing the crushed waste polyurethane products into a reaction container, adding ethylene glycol and triisopropoxyaluminum, heating and stirring the mixture for 2 hours at the temperature of 120 ℃, cooling the mixture to room temperature, adjusting the product to be neutral, washing the product with water in sequence, and distilling the product under reduced pressure to obtain a polyurethane degradation product for later use;
(2) drying expanded vermiculite at 100 ℃ for 40 minutes, taking out, grinding the expanded vermiculite and the ash calcium powder in a ball mill, crushing, and sieving with a 200-mesh sieve to obtain mixed powder for later use;
(3) adding water into a reaction kettle, sequentially adding sodium nitrite, potassium titanate powder and cobalt isooctanoate, starting a stirring device, stirring at 115 ℃ at a stirring speed of 300r/min for 60 minutes, then adding the mixed powder obtained in the step (2) and paraffin oil, keeping the same stirring speed, and continuing stirring for 50 minutes to prepare slurry which is fine in bubbles and has certain bonding film forming capacity for later use;
(4) and (2) finally, adding the polyurethane degradation product obtained in the step (1) and the silicone oil foam stabilizer into a reaction kettle, stirring and mixing uniformly, injecting the mixture into a mold for foaming when the mixture in the reaction kettle generates bubbles and the color of the bubbles is white, and curing at high temperature to obtain the polyurethane heat-insulating core material.
The composite insulation board integrated board is characterized in that the mortar composite layer is prepared from the following materials in parts by weight: 10 parts of cement, 15 parts of coal ash, 30 parts of diatomite, 25 parts of aluminum silicate, 10 parts of magnesium silicate, 5 parts of carbon cellulose, 3 parts of vinyl acetate, 3 parts of dimethylolpropionic acid, 1 part of latex powder and 20 parts of water; the preparation method of the mortar composite layer comprises the following steps:
(1) placing cement, coal ash and diatomite in a pulverizer, adjusting the rotating speed to 80r/min, and pulverizing for 3 hours to make the particle size be 0.5mm, thereby obtaining a mixed pulverized material for later use;
(2) placing the mixed powder ground substance obtained in the step (1) into a reaction kettle, adding water, aluminum silicate, magnesium silicate and vinyl acetate into the reaction kettle, heating to 100 ℃, stirring and mixing, wherein the stirring speed is 100 r/min, the stirring time is 0.5 hour, then keeping the stirring speed unchanged, cooling to 75 ℃ at the speed of 5 ℃/min, sequentially adding the carbon cellulose, the emulsion powder and the dimethylolpropionic acid, adjusting the stirring speed to 160r/min, and stirring for 28 minutes to prepare slurry for later use;
(3) and (3) injecting the slurry obtained in the step (2) into a mold, drying for 10 hours at 50 ℃, demolding and trimming to obtain the product.
The composite insulation board integrated board in the embodiment 2 has a structure shown in fig. 1, and comprises an insulation core material layer, a mortar composite layer and a glass fiber net cloth layer, wherein the mortar composite layer is positioned on the inner side and the outer side of the insulation core material layer, and the glass fiber net cloth layer is positioned on the outer side of the mortar composite layer; the thickness of the mortar composite layer positioned on the inner side is 10mm, the thickness of the mortar composite layer positioned on the outer side is 30mm, and the thickness of the heat-insulating core material layer is 55 mm; the composite insulation board is formed by pressing and integrating an insulation core material layer, a mortar composite layer and a glass fiber mesh fabric layer.
The heat-insulation core material layer is prepared from the following materials in parts by weight: 195 parts of waste polyurethane product, 90 parts of ethylene glycol, 11 parts of triisopropoxyaluminum, 60 parts of expanded vermiculite, 45 parts of ash calcium powder, 20 parts of sodium nitrite, 13 parts of potassium titanate powder, 14 parts of paraffin oil, 7 parts of cobalt isooctanoate and 30 parts of water; the preparation method of the heat-insulation core material comprises the following steps:
(1) crushing waste polyurethane products, placing the crushed waste polyurethane products into a reaction container, adding ethylene glycol and triisopropoxyaluminum, heating and stirring the mixture for 4 hours at 160 ℃, cooling the mixture to room temperature, adjusting the product to be neutral, washing the product with water in sequence, and distilling the product under reduced pressure to obtain a polyurethane degradation product for later use;
(2) drying expanded vermiculite at 120 deg.C for 40 min, taking out, grinding with ash calcium powder in ball mill, pulverizing, and sieving with 400 mesh sieve to obtain mixed powder;
(3) adding water into a reaction kettle, sequentially adding sodium nitrite, potassium titanate powder and cobalt isooctanoate, starting a stirring device, stirring for 90 minutes at 115 ℃ at a stirring speed of 500r/min, then adding the mixed powder and paraffin oil obtained in the step (2), keeping the same stirring speed, and continuing stirring for 50 minutes to prepare slurry which is fine in bubbles and has certain bonding film forming capacity for later use;
(4) and (2) finally, adding the polyurethane degradation product obtained in the step (1) and the silicone oil foam stabilizer into a reaction kettle, stirring and mixing uniformly, injecting the mixture into a mold for foaming when the mixture in the reaction kettle generates bubbles and the color of the bubbles is white, and curing at high temperature to obtain the polyurethane heat-insulating core material.
The mortar composite layer is prepared from the following materials in parts by weight: 20 parts of cement, 30 parts of coal ash, 50 parts of diatomite, 45 parts of aluminum silicate, 20 parts of magnesium silicate, 13 parts of carbon cellulose, 15 parts of vinyl acetate, 10 parts of dimethylolpropionic acid, 5 parts of emulsion powder and 40 parts of water; the preparation method of the mortar composite layer comprises the following steps:
(1) placing cement, coal ash and diatomite in a pulverizer, adjusting the rotating speed to 200r/min, and pulverizing for 7 hours to ensure that the granularity is 0.8mm to obtain a mixed pulverized material for later use;
(2) placing the mixed powder ground substance obtained in the step (1) into a reaction kettle, adding water, aluminum silicate, magnesium silicate and vinyl acetate into the reaction kettle, heating to 116 ℃, stirring and mixing, wherein the stirring speed is 100 r/min, the stirring time is 0.7 h, then keeping the stirring speed unchanged, cooling to 75 ℃ at the speed of 5 ℃/min, sequentially adding the carbon cellulose, the emulsion powder and the dimethylolpropionic acid, adjusting the stirring speed to 160r/min, and stirring for 28 min to prepare slurry for later use;
(3) and (3) injecting the slurry obtained in the step (2) into a mold, drying for 14 hours at 70 ℃, demolding and trimming to obtain the product.
The heat-insulation core material layer is prepared from the following materials in parts by weight: 175 parts of waste polyurethane product, 75 parts of ethylene glycol, 9 parts of triisopropoxyaluminum, 55 parts of expanded vermiculite, 40 parts of ash calcium powder, 18 parts of sodium nitrite, 11 parts of potassium titanate powder, 12 parts of paraffin oil, 4 parts of cobalt isooctanoate, 10-13 parts of silicone oil foam stabilizer and 25 parts of water; the preparation method of the heat-insulation core material comprises the following steps:
(1) crushing waste polyurethane products, placing the crushed waste polyurethane products into a reaction container, adding ethylene glycol and triisopropoxyaluminum, heating and stirring the mixture for 3 hours at 135 ℃, cooling the mixture to room temperature, adjusting the product to be neutral, washing the product with water in sequence, and distilling the product under reduced pressure to obtain a polyurethane degradation product for later use;
(2) drying expanded vermiculite at 110 deg.C for 40 min, taking out, grinding with ash calcium powder in ball mill, pulverizing, and sieving with 300 mesh sieve to obtain mixed powder;
(3) adding water into a reaction kettle, sequentially adding sodium nitrite, potassium titanate powder and cobalt isooctanoate, starting a stirring device, stirring at 115 ℃ at a stirring speed of 400r/min for 75 minutes, then adding the mixed powder obtained in the step (2) and paraffin oil, keeping the same stirring speed, and continuing stirring for 50 minutes to prepare slurry which is fine in bubbles and has certain bonding film forming capacity for later use;
(4) and (2) finally, adding the polyurethane degradation product obtained in the step (1) and the silicone oil foam stabilizer into a reaction kettle, stirring and mixing uniformly, injecting the mixture into a mold for foaming when the mixture in the reaction kettle generates bubbles and the color of the bubbles is white, and curing at high temperature to obtain the polyurethane heat-insulating core material.
The composite insulation board integrated board is characterized in that the mortar composite layer is prepared from the following materials in parts by weight: 15 parts of cement, 24 parts of coal ash, 40 parts of diatomite, 35 parts of aluminum silicate, 15 parts of magnesium silicate, 10 parts of carbon cellulose, 8 parts of vinyl acetate, 6 parts of dimethylolpropionic acid, 2.5 parts of latex powder and 30 parts of water; the preparation method of the mortar composite layer comprises the following steps:
(1) placing cement, coal ash and diatomite in a pulverizer, adjusting the rotating speed to 140r/min, and pulverizing for 5 hours to ensure that the granularity is 0.7mm to obtain a mixed powder for later use;
(2) placing the mixed powder ground substance obtained in the step (1) into a reaction kettle, adding water, aluminum silicate, magnesium silicate and vinyl acetate into the reaction kettle, heating to 110 ℃, stirring and mixing, wherein the stirring speed is 100 r/min, the stirring time is 0.6 h, then keeping the stirring speed unchanged, cooling to 75 ℃ at the speed of 5 ℃/min, sequentially adding the carbon cellulose, the emulsion powder and the dimethylolpropionic acid, adjusting the stirring speed to 160r/min, and stirring for 28 min to prepare slurry for later use;
(3) and (3) injecting the slurry obtained in the step (2) into a mold, drying for 12 hours at the temperature of 60 ℃, demolding, and trimming to obtain the product.
Test example: performance study of composite insulation board integrated board (embodiment 3) obtained by the invention
Test subjects: the physical and mechanical performance indexes of the heat insulation core material layer and the mortar composite layer of the composite heat insulation board are respectively researched, and the test results are shown in tables 1 and 2.
Table 1 insulation core layer Performance data
| Item (Unit) | Heat-insulating core material |
| Compressive Strength (kPa) | 165 |
| Thermal conductivity (W/(m.k)) | 0.014 |
| Tensile Strength (kPa) perpendicular to the plate surface | 317 |
| Grade of combustion performance | A2 |
TABLE 2 mortar composite layer Performance data
| Item (Unit) | Mortar |
| Compressive strength (MPa) | 0.521 |
| Linear shrinkage (%) | 0.12 |
| Tensile bond Strength (MPa) | 0.346 |
| Thermal conductivity (W/(m.k)) | 0.033 |
| Grade of combustion performance | A2 |
According to the test data, the combustion performance grades of the heat-insulating core material layer and the mortar composite layer reach A2 grade, and meanwhile, the composite heat-insulating board integrated board prepared by the invention has the mechanical properties of higher compressive strength, tensile strength and the like, is not easy to deform and crack, has excellent heat-insulating performance, and has the heat conductivity coefficient of the heat-insulating core material layer reaching 0.014 w/(m.K). In addition, the manufacturing method provided by the invention has simple process, can realize industrialized and large-scale continuous production, ensures the quality, reduces the manufacturing cost and improves the production efficiency.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Those skilled in the art, having the benefit of this disclosure and the benefit of this written description, will appreciate that other embodiments can be devised which do not depart from the specific details disclosed herein.
Claims (1)
1. The composite insulation board comprises an insulation core material layer, a mortar composite layer and a glass fiber net cloth layer, and is characterized in that the composite insulation board is formed by pressing the insulation core material layer, the mortar composite layer and the glass fiber net cloth layer into a whole;
the glass fiber net cloth layer is positioned on the outer side of the mortar composite layer; the thickness of the mortar composite layer positioned on the inner side is 5-10mm, the thickness of the mortar composite layer positioned on the outer side is 20-30mm, and the thickness of the heat-insulating core material layer is 35-55 mm;
the heat-insulation core material layer is prepared from the following materials in parts by weight: 175 parts of waste polyurethane product, 75 parts of ethylene glycol, 9 parts of triisopropoxyaluminum, 55 parts of expanded vermiculite, 40 parts of ash calcium powder, 18 parts of sodium nitrite, 11 parts of potassium titanate powder, 12 parts of paraffin oil, 4 parts of cobalt isooctanoate, 10-13 parts of silicone oil foam stabilizer and 25 parts of water;
the preparation method of the heat-insulation core material comprises the following steps:
(1) crushing waste polyurethane products, placing the crushed waste polyurethane products into a reaction container, adding ethylene glycol and triisopropoxyaluminum, heating and stirring the mixture for 2 to 4 hours at the temperature of 160 ℃ with 120 DEG, cooling the mixture to room temperature, adjusting the product to be neutral, and sequentially washing the product with water and distilling the product under reduced pressure to obtain a polyurethane degradation product for later use;
(2) placing the expanded vermiculite in a ball mill for grinding and crushing at the temperature of 100-plus-material 120 ℃ for 40 minutes, taking out the expanded vermiculite, placing the expanded vermiculite and the ash calcium powder in the ball mill for grinding and crushing, and sieving the ground expanded vermiculite and the ash calcium powder by a 200-plus-material 400-mesh sieve to obtain mixed powder for later use;
(3) adding water into a reaction kettle, sequentially adding sodium nitrite, potassium titanate powder and cobalt isooctanoate, starting a stirring device, stirring at the stirring speed of 300-500r/min at 115 ℃ for 60-90 minutes, then adding the mixed powder and paraffin oil obtained in the step (2), keeping the same stirring speed, and continuing stirring for 50 minutes to prepare slurry which is fine in bubbles and has certain bonding film forming capacity for later use;
(4) finally, adding the polyurethane degradation product obtained in the step (1) and a silicone oil foam stabilizer into a reaction kettle, stirring and mixing uniformly, injecting the mixture into a mold for foaming when the mixture in the reaction kettle generates bubbles and the color of the bubbles is white, and curing at high temperature to obtain the polyurethane heat-insulating core material;
the mortar composite layer is prepared from the following materials in parts by weight: 15 parts of cement, 24 parts of coal ash, 40 parts of diatomite, 35 parts of aluminum silicate, 15 parts of magnesium silicate, 10 parts of carbon cellulose, 8 parts of vinyl acetate, 6 parts of dimethylolpropionic acid, 2.5 parts of latex powder and 30 parts of water;
the preparation method of the mortar composite layer comprises the following steps:
(1) placing cement, coal ash and diatomite in a pulverizer, adjusting the rotating speed to 80-200r/min, and pulverizing for 3-7 hours to make the granularity be 0.5-0.8mm, so as to obtain a mixed powder for later use;
(2) placing the mixed powder grinding material obtained in the step (1) into a reaction kettle, adding water, aluminum silicate, magnesium silicate and vinyl acetate into the reaction kettle, heating to 100-;
(3) and (3) injecting the slurry obtained in the step (2) into a mold, baking for 10-14 hours at 50-70 ℃, demolding, and trimming to obtain the product.
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| CN104672414A (en) * | 2014-11-27 | 2015-06-03 | 上海鹤城高分子科技有限公司 | Method of preparing polyurethane thermal insulation material by recovering waste polyurethane elastomer |
| CN106832204A (en) * | 2017-01-05 | 2017-06-13 | 广州特种承压设备检测研究院 | A kind of modified polyurethane roofing heat insulating material and preparation method thereof |
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Effective date of registration: 20200521 Address after: 250101 North Shandong city of Ji'nan province high tech Zone Sun Village Office Chun Bo Road Applicant after: JINAN ZHENGHENG POLYURETHANE MATERIAL Co.,Ltd. Address before: 250000 No. four, No. 166, Shizhong Road, Shizhong District, Shandong, Ji'nan Applicant before: Wang Zhengheng |
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