CN115872697A - Aerated building block composite material and preparation method thereof - Google Patents
Aerated building block composite material and preparation method thereof Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000002994 raw material Substances 0.000 claims abstract description 32
- 239000001913 cellulose Substances 0.000 claims abstract description 24
- 229920002678 cellulose Polymers 0.000 claims abstract description 24
- 239000002245 particle Substances 0.000 claims abstract description 14
- 239000006004 Quartz sand Substances 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 12
- 239000005871 repellent Substances 0.000 claims abstract description 12
- 230000002940 repellent Effects 0.000 claims abstract description 12
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 9
- 238000004537 pulping Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims description 122
- 238000006243 chemical reaction Methods 0.000 claims description 73
- 238000001291 vacuum drying Methods 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 32
- 239000000654 additive Substances 0.000 claims description 30
- 230000000996 additive effect Effects 0.000 claims description 29
- 238000001125 extrusion Methods 0.000 claims description 24
- 238000003760 magnetic stirring Methods 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 18
- 239000002002 slurry Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- 239000002202 Polyethylene glycol Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- 239000008187 granular material Substances 0.000 claims description 12
- 238000005469 granulation Methods 0.000 claims description 12
- 230000003179 granulation Effects 0.000 claims description 12
- -1 polyethylene Polymers 0.000 claims description 12
- 229920001223 polyethylene glycol Polymers 0.000 claims description 12
- 239000003381 stabilizer Substances 0.000 claims description 12
- 239000011398 Portland cement Substances 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 6
- 239000008116 calcium stearate Substances 0.000 claims description 6
- 235000013539 calcium stearate Nutrition 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000000314 lubricant Substances 0.000 claims description 6
- 239000003607 modifier Substances 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 239000004014 plasticizer Substances 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 6
- 239000004800 polyvinyl chloride Substances 0.000 claims description 6
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 6
- 239000013530 defoamer Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- 238000007906 compression Methods 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 3
- 208000010392 Bone Fractures Diseases 0.000 abstract description 2
- 206010010214 Compression fracture Diseases 0.000 abstract description 2
- 206010017076 Fracture Diseases 0.000 abstract description 2
- 239000004566 building material Substances 0.000 abstract description 2
- 239000003469 silicate cement Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an aerated building block composite material and a preparation method thereof, belonging to the technical field of building materials, wherein the aerated building block composite material comprises the following components in parts by weight: 80-90 parts of silicate cement, 20-30 parts of quartz sand, 13-15 parts of modified cellulose, 12-13 parts of modified rubber powder, 6-8 parts of water repellent, 3-5 parts of defoaming agent and 1-3 parts of water reducing agent, wherein the preparation method of the modified cellulose comprises the following steps: lignocellulose extracted from pulping and papermaking black liquor powder is used as a raw material. According to the invention, the modified rubber powder is added, so that the cohesive force of the aerated block composite material can be improved, the tensile bonding strength of particle bonds of the aerated block composite material can be enhanced, certain bubbles can be introduced, the compression-fracture ratio of the aerated block composite material can be effectively weakened, the toughness of the aerated block composite material is improved, the compression-resistant and fracture-resistant strength of the aerated block composite material is effectively compensated by adding the modified cellulose, and the modified cellulose has higher thermal stability and viscosity.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to an aerated building block composite material and a preparation method thereof.
Background
The aerated block composite material is a porous silicate product prepared by using a siliceous material and a calcareous material as main raw materials, adding a gas former, adding water, stirring, forming pores through a chemical reaction, and performing casting molding, precuring cutting, autoclaved curing and other process processes.
The aerated block composite material in the prior art generally has the technical problems of poor quality, low strength, large shrinkage, large water absorption, easy cracking, large capacity and the like.
Based on the above, the invention designs an aerated building block composite material and a preparation method thereof, so as to solve the problems.
Disclosure of Invention
The invention aims to: the aerated block composite material and the preparation method thereof are provided in order to solve the problems of poor quality, low strength, large shrinkage, large water absorption, easy cracking, large capacity and the like of the aerated block composite material in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the aerated building block composite material comprises the following components in parts by weight: 80-90 parts of Portland cement, 20-30 parts of quartz sand, 13-15 parts of modified cellulose, 12-13 parts of modified rubber powder, 6-8 parts of water repellent, 3-5 parts of defoaming agent and 1-3 parts of water reducing agent.
As a further description of the above technical solution:
the preparation method of the modified cellulose comprises the following steps:
taking lignocellulose extracted from pulping and papermaking black liquor powder as a raw material;
adding raw material lignocellulose and an additive into a mixing reaction kettle equipped with a magnetic stirring mechanism for mixing;
after the raw material lignocellulose and the additive are mixed, uniformly adding polyethylene glycol into the mixing reaction kettle for mixing;
pouring into water, stirring, filtering and drying.
As a further description of the above technical solution:
the additive comprises a plasticizer, a stabilizer, a modifier and a lubricant, wherein the stabilizer comprises one or two of calcium stearate and zinc stearate.
As a further description of the above technical solution:
in the process of mixing the raw material lignocellulose and the additive in the mixing reaction kettle, the rotating speed of the mixing reaction kettle is 750r/min.
As a further description of the above technical solution:
and in the process of mixing the raw material lignocellulose and the additive in the mixing reaction kettle, heating the mixing reaction kettle in water bath at the temperature of 35 ℃ for 2-3min.
As a further description of the above technical solution:
after the polyethylene glycol is uniformly added, setting the rotation speed of the mixing reaction kettle to be 1000r/min, the temperature to be 60 ℃ and the time to be 3-4min.
As a further description of the above technical solution:
the preparation method of the modified rubber powder comprises the following steps:
adding the rubber powder and the auxiliary materials into a mixing reaction kettle which is provided with a magnetic stirring mechanism according to the sequence for mixing, so that the rubber powder and the auxiliary materials are macroscopically homogeneous in the mixing reaction kettle, and obtaining a mixture;
then, injecting the mixture into a double-screw extrusion device for extrusion granulation;
then, the granules are sent into vacuum drying equipment for vacuum drying treatment;
finally, the particles obtained after the vacuum drying treatment are treated.
As a further description of the above technical solution:
the mixing time of the rubber powder and the auxiliary materials reaching a homogeneous phase macroscopically in a mixing reaction kettle is 18-22min, the mixture is injected into a double-screw extrusion device for extrusion granulation, the processing temperature is 160-170 ℃, and the rotating speed is 65-70r/min.
As a further description of the above technical solution:
and conveying the granules into a vacuum drying device for vacuum drying treatment, wherein the internal temperature of a vacuum drying oven is 100 ℃, the drying time is 6-8h, the auxiliary materials are polyethylene, polyvinyl chloride, calcium carbonate and polypropylene, and the particle size of the auxiliary materials is 70 meshes.
A preparation method of an aerated block composite material comprises the following steps:
adding the Portland cement, the quartz sand, the water repellent, the defoaming agent and the water reducing agent in parts by weight into a mixing reaction kettle equipped with a magnetic stirring mechanism, and uniformly mixing;
adding the modified cellulose and the modified rubber powder in parts by weight into a mixing reaction kettle equipped with a magnetic stirring mechanism, and uniformly mixing to obtain slurry;
pouring the obtained slurry into a die cavity, conveying the slurry into a pre-curing chamber, performing pre-curing for 1 to 3 hours to ensure that the strength of a blank body reaches 0.05 to 0.08MPa, and then cutting the blank body;
and conveying the cut blank into a high-pressure autoclave, autoclaving at the constant temperature and the constant pressure for 8-12 hours at the temperature of 170-190 ℃ and under the pressure of 1-2 MPa, discharging the blank out of the autoclave, separating the building blocks, and packaging to obtain the aerated building block composite material.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
according to the invention, the modified rubber powder is added, so that the cohesive force of the aerated block composite material can be improved, the tensile bonding strength of particle bonds of the aerated block composite material can be enhanced, certain bubbles can be introduced, the compression-fracture ratio of the aerated block composite material can be effectively weakened, the toughness of the aerated block composite material can be improved, the addition of the modified cellulose can effectively compensate the compression-resistant and fracture-resistant strength of the aerated block composite material, and the modified cellulose has higher thermal stability and viscosity and also has certain capability of resisting compression deformation.
Drawings
FIG. 1 is a process flow diagram of an aerated block composite material and a preparation method thereof provided by the invention;
FIG. 2 is a flow chart of a preparation process of modified cellulose in the aerated block composite material and the preparation method thereof provided by the invention;
FIG. 3 is a flow chart of a preparation process of modified rubber powder in the aerated block composite material and the preparation method thereof provided by the invention.
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.
Example one
The aerated building block composite material comprises the following components in parts by weight: 80 parts of portland cement, 20 parts of quartz sand, 13 parts of modified cellulose, 12 parts of modified rubber powder, 6 parts of a water repellent, 3 parts of a defoaming agent and 1 part of a water reducing agent;
the preparation method of the modified cellulose comprises the following steps:
taking lignocellulose extracted from pulping and papermaking black liquor powder as a raw material;
adding raw material lignocellulose and an additive into a mixing reaction kettle provided with a magnetic stirring mechanism for mixing, wherein the additive comprises a plasticizer, a stabilizer, a modifier and a lubricant, the stabilizer comprises one or two of calcium stearate and zinc stearate, and the rotating speed of the mixing reaction kettle is 750r/min in the process of mixing the raw material lignocellulose and the additive in the mixing reaction kettle;
after the raw material lignocellulose and the additive are mixed, uniformly adding polyethylene glycol into a mixing reaction kettle for mixing, and heating the mixing reaction kettle in a water bath at the temperature of 35 ℃ for 2min in the process of mixing the raw material lignocellulose and the additive in the mixing reaction kettle;
pouring into water again, stirring, filtering and drying after a period of time, and setting the rotation speed of the mixing reaction kettle at 1000r/min, the temperature at 60 ℃ and the time at 3min after the polyethylene glycol is uniformly added;
the preparation method of the modified rubber powder comprises the following steps:
adding the rubber powder and the auxiliary materials into a mixing reaction kettle which is provided with a magnetic stirring mechanism according to the sequence for mixing, so that the rubber powder and the auxiliary materials are macroscopically homogeneous in the mixing reaction kettle, and obtaining a mixture;
then, injecting the mixture into a double-screw extrusion device for extrusion granulation, wherein the mixing time for the rubber powder and the auxiliary materials to reach a homogeneous phase macroscopically in a mixing reaction kettle is 18min, injecting the mixture into the double-screw extrusion device for extrusion granulation, and the processing temperature is 160 ℃ and the rotating speed is 65r/min;
then, sending the granules into vacuum drying equipment for vacuum drying treatment, wherein the granules are sent into the vacuum drying equipment for vacuum drying treatment, the internal temperature of a vacuum drying oven is 100 ℃, the drying time is 6-8h, the auxiliary materials are polyethylene, polyvinyl chloride, calcium carbonate and polypropylene, and the particle size of the auxiliary materials is 70 meshes;
finally, processing the particles obtained after vacuum drying treatment;
a preparation method of an aerated block composite material comprises the following steps:
adding the Portland cement, the quartz sand, the water repellent, the defoamer and the water reducing agent in parts by weight into a mixing reaction kettle equipped with a magnetic stirring mechanism, and uniformly mixing;
adding the modified cellulose and the modified rubber powder in parts by weight into a mixing reaction kettle equipped with a magnetic stirring mechanism, and uniformly mixing to obtain slurry;
pouring the obtained slurry into a die cavity, conveying the slurry into a pre-curing chamber, performing pre-curing for 1 to 3 hours to ensure that the strength of a blank body reaches 0.05MPa, and cutting the blank body;
and conveying the cut blank into a high-pressure autoclave, autoclaving at the constant temperature and the constant pressure for 8 hours at the temperature of 170 ℃ and under the pressure of 1MPa, discharging the blank out of the autoclave, separating the building blocks, and packaging to obtain the aerated building block composite material.
Example two
The aerated building block composite material comprises the following components in parts by weight: 90 parts of portland cement, 30 parts of quartz sand, 15 parts of modified cellulose, 13 parts of modified rubber powder, 8 parts of a water repellent, 5 parts of a defoaming agent and 3 parts of a water reducing agent;
the preparation method of the modified cellulose comprises the following steps:
taking lignocellulose extracted from pulping and papermaking black liquor powder as a raw material;
adding raw material lignocellulose and an additive into a mixing reaction kettle which is provided with a magnetic stirring mechanism for mixing, wherein the additive comprises a plasticizer, a stabilizer, a modifier and a lubricant, the stabilizer comprises one or two of calcium stearate and zinc stearate, and the rotating speed of the mixing reaction kettle is 750r/min in the process of mixing the raw material lignocellulose and the additive in the mixing reaction kettle;
after the mixing of the raw material lignocellulose and the additive is finished, uniformly adding polyethylene glycol into a mixing reaction kettle for mixing, and heating the mixing reaction kettle in a water bath at the temperature of 35 ℃ for 3min in the process of mixing the raw material lignocellulose and the additive in the mixing reaction kettle;
pouring into water again, stirring, filtering and drying after a period of time, and setting the rotation speed of the mixing reaction kettle at 1000r/min, the temperature at 60 ℃ and the time at 4min after the polyethylene glycol is uniformly added;
the preparation method of the modified rubber powder comprises the following steps:
adding the rubber powder and the auxiliary materials into a mixing reaction kettle equipped with a magnetic stirring mechanism in sequence for mixing, so that the rubber powder and the auxiliary materials are macroscopically homogeneous in the mixing reaction kettle, and obtaining a mixture;
then, injecting the mixture into a double-screw extrusion device for extrusion granulation, wherein the mixing time for the rubber powder and the auxiliary materials to reach a homogeneous phase macroscopically in a mixing reaction kettle is 22min, injecting the mixture into the double-screw extrusion device for extrusion granulation, and the processing temperature is 170 ℃ and the rotating speed is 70r/min;
then, sending the granules into a vacuum drying device for vacuum drying treatment, wherein the granules are sent into the vacuum drying device for vacuum drying treatment, the internal temperature of a vacuum drying box is 100 ℃, the drying time is 6-8h, the auxiliary materials are polyethylene, polyvinyl chloride, calcium carbonate and polypropylene, and the particle size of the auxiliary materials is 70 meshes;
finally, processing the particles obtained after vacuum drying treatment;
a preparation method of an aerated block composite material comprises the following steps:
adding the Portland cement, the quartz sand, the water repellent, the defoamer and the water reducing agent in parts by weight into a mixing reaction kettle equipped with a magnetic stirring mechanism, and uniformly mixing;
adding the modified cellulose and the modified rubber powder in parts by weight into a mixing reaction kettle equipped with a magnetic stirring mechanism, and uniformly mixing to obtain slurry;
pouring the obtained slurry into a die cavity, conveying the slurry into a pre-curing chamber, performing pre-curing for 1 to 3 hours to ensure that the strength of a blank body reaches 0.08MPa, and then cutting the blank body;
and conveying the cut blank into a high-pressure autoclave, autoclaving at the constant temperature and the constant pressure at 190 ℃ and under 2MPa for 12 hours, discharging the blank out of the autoclave, separating the building blocks, and packaging to obtain the aerated building block composite material.
EXAMPLE III
The aerated building block composite material comprises the following components in parts by weight: 85 parts of portland cement, 25 parts of quartz sand, 14 parts of modified cellulose, 12 parts of modified rubber powder, 7 parts of a water repellent, 4 parts of a defoaming agent and 2 parts of a water reducing agent;
the preparation method of the modified cellulose comprises the following steps:
taking lignocellulose extracted from pulping and papermaking black liquor powder as a raw material;
adding raw material lignocellulose and an additive into a mixing reaction kettle which is provided with a magnetic stirring mechanism for mixing, wherein the additive comprises a plasticizer, a stabilizer, a modifier and a lubricant, the stabilizer comprises one or two of calcium stearate and zinc stearate, and the rotating speed of the mixing reaction kettle is 750r/min in the process of mixing the raw material lignocellulose and the additive in the mixing reaction kettle;
after the mixing of the raw material lignocellulose and the additive is finished, uniformly adding polyethylene glycol into a mixing reaction kettle for mixing, and heating the mixing reaction kettle in a water bath at the temperature of 35 ℃ for 2.5min in the process of mixing the raw material lignocellulose and the additive in the mixing reaction kettle;
pouring into water, stirring, filtering and drying after a period of time, and setting the rotating speed of the mixing reaction kettle at 1000r/min, the temperature at 60 ℃ and the time at 3.5min after the polyethylene glycol is uniformly added;
the preparation method of the modified rubber powder comprises the following steps:
adding the rubber powder and the auxiliary materials into a mixing reaction kettle equipped with a magnetic stirring mechanism in sequence for mixing, so that the rubber powder and the auxiliary materials are macroscopically homogeneous in the mixing reaction kettle, and obtaining a mixture;
then, injecting the mixture into a double-screw extrusion device for extrusion granulation, wherein the mixing time for the rubber powder and the auxiliary materials to reach a homogeneous phase macroscopically in a mixing reaction kettle is 20min, injecting the mixture into the double-screw extrusion device for extrusion granulation, and the processing temperature is 165 ℃ and the rotating speed is 68r/min;
then, sending the granules into vacuum drying equipment for vacuum drying treatment, wherein the granules are sent into the vacuum drying equipment for vacuum drying treatment, the internal temperature of a vacuum drying oven is 100 ℃, the drying time is 6-8h, the auxiliary materials are polyethylene, polyvinyl chloride, calcium carbonate and polypropylene, and the particle size of the auxiliary materials is 70 meshes;
finally, processing the particles obtained after vacuum drying treatment;
a preparation method of an aerated block composite material comprises the following steps:
adding the Portland cement, the quartz sand, the water repellent, the defoaming agent and the water reducing agent in parts by weight into a mixing reaction kettle equipped with a magnetic stirring mechanism, and uniformly mixing;
adding the modified cellulose and the modified rubber powder in parts by weight into a mixing reaction kettle equipped with a magnetic stirring mechanism, and uniformly mixing to obtain slurry;
pouring the obtained slurry into a die cavity, conveying the slurry into a pre-curing chamber, performing pre-curing for 1-3h to enable the strength of a blank to reach 0.06MPa, and cutting;
and conveying the cut blank into a high-pressure autoclave, autoclaving at the constant temperature and the constant pressure for 10 hours at the temperature of 180 ℃ and under the pressure of 1.5MPa, discharging the blank out of the autoclave, separating the building blocks, and packaging to obtain the aerated building block composite material.
Example four
The preparation method of the modified cellulose comprises the following steps:
taking lignocellulose extracted from pulping and papermaking black liquor powder as a raw material;
adding raw material lignocellulose and an additive into a mixing reaction kettle provided with a magnetic stirring mechanism for mixing, wherein the additive comprises a plasticizer, a stabilizer, a modifier and a lubricant, the stabilizer comprises one or two of calcium stearate and zinc stearate, and the rotating speed of the mixing reaction kettle is 750r/min in the process of mixing the raw material lignocellulose and the additive in the mixing reaction kettle;
after the raw material lignocellulose and the additive are mixed, uniformly adding polyethylene glycol into a mixing reaction kettle for mixing, and heating the mixing reaction kettle in a water bath at the temperature of 35 ℃ for 1min in the process of mixing the raw material lignocellulose and the additive in the mixing reaction kettle;
pouring into water again, stirring, filtering and drying after a period of time, and setting the rotation speed of the mixing reaction kettle at 1000r/min, the temperature at 60 ℃ and the time at 2min after the polyethylene glycol is uniformly added;
the preparation method of the modified rubber powder comprises the following steps:
adding the rubber powder and the auxiliary materials into a mixing reaction kettle equipped with a magnetic stirring mechanism in sequence for mixing, so that the rubber powder and the auxiliary materials are macroscopically homogeneous in the mixing reaction kettle, and obtaining a mixture;
then, injecting the mixture into a double-screw extrusion device for extrusion granulation, wherein the mixing time of the rubber powder and the auxiliary materials reaching a homogeneous phase in a mixing reaction kettle in a macroscopic view is 17min, injecting the mixture into the double-screw extrusion device for extrusion granulation, and the processing temperature is 150 ℃ and the rotating speed is 60r/min;
then, sending the granules into a vacuum drying device for vacuum drying treatment, wherein the granules are sent into the vacuum drying device for vacuum drying treatment, the internal temperature of a vacuum drying box is 100 ℃, the drying time is 6-8h, the auxiliary materials are polyethylene, polyvinyl chloride, calcium carbonate and polypropylene, and the particle size of the auxiliary materials is 70 meshes;
finally, processing the particles obtained after vacuum drying treatment;
a preparation method of an aerated block composite material comprises the following steps:
adding the Portland cement, the quartz sand, the water repellent, the defoaming agent and the water reducing agent in parts by weight into a mixing reaction kettle equipped with a magnetic stirring mechanism, and uniformly mixing;
adding the modified cellulose and the modified rubber powder in parts by weight into a mixing reaction kettle equipped with a magnetic stirring mechanism, and uniformly mixing to obtain slurry;
pouring the obtained slurry into a die cavity, conveying the slurry into a pre-curing chamber, performing pre-curing for 1 to 3 hours to ensure that the strength of a blank body reaches 0.04MPa, and cutting the blank body;
and conveying the cut blank into a high-pressure autoclave, autoclaving at the constant temperature and the constant pressure for 7 hours at the temperature of 160 ℃ and under the pressure of 1MPa, discharging the blank out of the autoclave, separating the building blocks, and packaging to obtain the aerated building block composite material.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. The aerated building block composite material is characterized by comprising the following components in parts by weight: 80-90 parts of portland cement, 20-30 parts of quartz sand, 13-15 parts of modified cellulose, 12-13 parts of modified rubber powder, 6-8 parts of a water repellent, 3-5 parts of a defoaming agent and 1-3 parts of a water reducing agent.
2. The aerated block composite material as claimed in claim 1, wherein the modified cellulose is prepared by a method comprising:
taking lignocellulose extracted from pulping and papermaking black liquor powder as a raw material;
adding raw material lignocellulose and an additive into a mixing reaction kettle equipped with a magnetic stirring mechanism for mixing;
after the raw material lignocellulose and the additive are mixed, uniformly adding polyethylene glycol into the mixing reaction kettle for mixing;
pouring into water, stirring, filtering and drying.
3. The aerated block composite material of claim 2, wherein the additives comprise plasticizers, stabilizers, modifiers and lubricants, and the stabilizers comprise one or both of calcium stearate and zinc stearate.
4. The aerated block composite material of claim 2, wherein the rotation speed of the mixing reaction kettle is 750r/min during the mixing of the raw material lignocellulose and the additive in the mixing reaction kettle.
5. The aerated block composite material according to claim 2, wherein in the process of mixing the raw material lignocellulose and the additive in the mixing reaction kettle, the mixing reaction kettle is heated in water bath at the temperature of 35 ℃ for 2-3min.
6. The aerated block composite material according to claim 2, wherein after the polyethylene glycol is uniformly added, the rotation speed of a mixing reaction kettle is set to be 1000r/min, the temperature is set to be 60 ℃, and the time is set to be 3-4min.
7. The aerated building block composite material of claim 1, wherein the preparation method of the modified rubber powder comprises the following steps:
adding the rubber powder and the auxiliary materials into a mixing reaction kettle which is provided with a magnetic stirring mechanism according to the sequence for mixing, so that the rubber powder and the auxiliary materials are macroscopically homogeneous in the mixing reaction kettle, and obtaining a mixture;
then, injecting the mixture into a double-screw extrusion device for extrusion granulation;
then, the granules are sent into vacuum drying equipment for vacuum drying treatment;
finally, the particles obtained after the vacuum drying treatment are treated.
8. The aerated block composite material of claim 7, wherein the mixing time of the rubber powder and the auxiliary materials reaching a homogeneous phase macroscopically in a mixing reaction kettle is 18-22min, the mixture is injected into a double-screw extrusion device for extrusion granulation, the processing temperature is 160-170 ℃, and the rotation speed is 65-70r/min.
9. The aerated block composite material according to claim 7, wherein the granules are sent into a vacuum drying device for vacuum drying treatment, the internal temperature of a vacuum drying oven is 100 ℃, the drying time is 6-8h, the auxiliary materials are polyethylene, polyvinyl chloride, calcium carbonate and polypropylene, and the particle size of the auxiliary materials is 70 meshes.
10. A method of making an aerated block composite material according to any of claims 1 to 9, wherein the method of making the aerated block composite material comprises:
adding the Portland cement, the quartz sand, the water repellent, the defoamer and the water reducing agent in parts by weight into a mixing reaction kettle equipped with a magnetic stirring mechanism, and uniformly mixing;
adding the modified cellulose and the modified rubber powder in parts by weight into a mixing reaction kettle equipped with a magnetic stirring mechanism, and uniformly mixing to obtain slurry;
pouring the obtained slurry into a die cavity, conveying the slurry into a pre-curing chamber, performing pre-curing for 1 to 3 hours to ensure that the strength of a blank body reaches 0.05 to 0.08MPa, and then cutting the blank body;
and conveying the cut blank into a high-pressure autoclave, autoclaving at the constant temperature and the constant pressure for 8-12 hours at the temperature of 170-190 ℃ and under the pressure of 1-2 MPa, discharging the blank out of the autoclave, separating the building blocks, and packaging to obtain the aerated building block composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211463272.6A CN115872697A (en) | 2022-11-21 | 2022-11-21 | Aerated building block composite material and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174848A (en) * | 2015-09-24 | 2015-12-23 | 北京大陆益通环保科技有限公司 | Rubber concrete material and composite board manufactured from same and board technology |
| CN109734401A (en) * | 2019-03-13 | 2019-05-10 | 浙江工业大学 | A kind of air-entrained concrete building block and preparation method thereof prepared using iron tailings as raw material |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174848A (en) * | 2015-09-24 | 2015-12-23 | 北京大陆益通环保科技有限公司 | Rubber concrete material and composite board manufactured from same and board technology |
| CN109734401A (en) * | 2019-03-13 | 2019-05-10 | 浙江工业大学 | A kind of air-entrained concrete building block and preparation method thereof prepared using iron tailings as raw material |
Non-Patent Citations (1)
| Title |
|---|
| 刘正武主编: ""土木工程材料"", vol. 1, 同济大学出版社, pages: 96 * |
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