CN111018481A - Full-solid-waste high-polymer foaming gelling light self-insulation material and production process thereof - Google Patents
Full-solid-waste high-polymer foaming gelling light self-insulation material and production process thereof Download PDFInfo
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- CN111018481A CN111018481A CN201911303273.2A CN201911303273A CN111018481A CN 111018481 A CN111018481 A CN 111018481A CN 201911303273 A CN201911303273 A CN 201911303273A CN 111018481 A CN111018481 A CN 111018481A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
- C04B28/344—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders the phosphate binder being present in the starting composition solely as one or more phosphates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention belongs to the technical field of building materials, and provides a full-solid waste high-polymer foaming gelling light self-insulation material and a production process thereof. The full-solid-waste high-polymer foaming gelling light self-insulation material is characterized by comprising the following components in parts by weight: 67-105 parts of fly ash, 12-25 parts of carbide slag, 1.5-3.3 parts of desulfurized gypsum, 0.1-0.5 part of foaming agent, 1.5-3 parts of activator, 3-9 parts of alkaline activator, 0.1-0.5 part of water reducing agent and 2-7 parts of composite binder, wherein the composite binder is composed of the following components in parts by mass: 1.3-4.5 parts of polyethylene glycol, 2.5-4 parts of glycerol, 0.5-1.3 parts of N-cocoyl glutamic acid and 1.5-5 parts of aluminum dihydrogen tripolyphosphate. The preparation method of the composite binder comprises the following steps: heating polyethylene glycol to 65-70 ℃, adding N-cocoyl glutamic acid and aluminium dihydrogen tripolyphosphate, uniformly mixing, cooling to room temperature, adding glycerol, and uniformly mixing to obtain the composite binder. By the technical scheme, the problem that high-strength, low-density and high-quality products are difficult to obtain in the production process of the foamed cementitious light material in the prior art is solved.
Description
Technical Field
The invention belongs to the technical field of building materials, and relates to a full-solid waste high-polymer foaming gelling light self-insulation material and a production process thereof.
Background
The heat insulation materials adopted by the traditional external wall heat insulation system in China are generally molded polyethylene foam plastics, extruded polyethylene foam materials, polyurethane and the like, but the materials have more and more problems in the long-term use process, and the market urgently needs the energy-saving and fireproof external wall heat insulation materials. The foaming gelling light material is used as a non-combustible and energy-saving building material, and is more and more widely recognized, valued and applied in a large quantity in the whole society.
The foamed gel light material is foamed concrete, also called foamed concrete and light concrete, and is a light porous material prepared by adding a high-molecular foaming agent into slurry prepared from a gel material, an auxiliary agent, water and the like, mixing, stirring, casting, molding, foaming and maintaining, and is a novel building material which is environment-friendly, energy-saving and waste-utilizing. However, the foamed cementitious lightweight material prepared by the existing production process has the disadvantages of high density, high strength, low density and low strength, and a high-quality product with both high strength and low density is difficult to obtain.
Disclosure of Invention
The invention provides a full-solid-waste high-polymer foaming gelling light self-insulation material and a production process thereof, and solves the problem that a high-strength, low-density and high-quality product is difficult to obtain in the production process of a foaming gelling light material in the prior art.
The technical scheme of the invention is realized as follows:
the full-solid-waste high-polymer foaming gelling light self-insulation material comprises the following components in parts by weight:
67-105 parts of fly ash, 12-25 parts of carbide slag, 1.5-3.3 parts of desulfurized gypsum, 0.1-0.5 part of foaming agent, 1.5-3 parts of activator, 3-9 parts of alkaline activator, 0.1-0.5 part of water reducing agent and 2-7 parts of composite binder,
the composite binder comprises the following components in parts by mass:
1.3-4.5 parts of polyethylene glycol, 2.5-4 parts of glycerol, 0.5-1.3 parts of N-cocoyl glutamic acid and 1.5-5 parts of aluminum dihydrogen tripolyphosphate.
As a further technical scheme, the paint comprises the following components in parts by weight:
80 parts of fly ash, 18 parts of carbide slag, 2 parts of desulfurized gypsum, 0.3 part of foaming agent, 2.6 parts of activating agent, 6 parts of alkaline activator, 0.3 part of water reducing agent and 5 parts of composite binder,
the composite binder comprises the following components in parts by mass:
2.6 parts of polyethylene glycol, 3.2 parts of glycerol, 1 part of N-cocoyl glutamic acid and 3.3 parts of aluminium dihydrogen tripolyphosphate.
As a further technical scheme, the molecular weight of the polyethylene glycol is 400.
As a further technical scheme, the preparation method of the composite binder comprises the following steps: heating polyethylene glycol to 65-70 ℃, adding N-cocoyl glutamic acid and aluminium dihydrogen tripolyphosphate, uniformly mixing, cooling to room temperature, adding glycerol, and uniformly mixing to obtain the composite binder.
As a further technical scheme, the foaming agent is polyvinyl butyral.
According to a further technical scheme, the activator is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1: 2.
As a further technical scheme, the alkali-activator is water glass and magnesium oxide with the mass ratio of 3: 1.
The invention also provides a production process of the full-solid waste high polymer foaming gelling light self-insulation material, which comprises the following steps:
s1, weighing all components for later use according to the formula of the all-solid-waste polymer foaming gelling light self-insulation material;
s2, mixing the fly ash, the carbide slag and the desulfurized gypsum, and grinding the mixture into powder to obtain mixed powder; adding a foaming agent into water with the mass of 10 times of that of the foaming agent, and stirring to obtain a foaming agent suspension;
s3, mixing the mixed powder obtained in the step S2 with an active agent, an alkaline activator, a water reducing agent and a composite binder to obtain a mixture, adding water with the temperature of 40-60 ℃ into the mixture, sequentially carrying out primary stirring, secondary stirring and tertiary stirring, adding the foaming agent suspension obtained in the step S2 when 10S before the tertiary stirring is finished, and uniformly stirring to obtain mixed slurry;
s4, pouring the mixed slurry obtained in the step S3, carrying out autoclaved aerated foaming, shaping, demoulding and cutting to obtain a blank;
and S5, carrying out autoclaved curing on the blank obtained in the step S4 to obtain the full-solid waste high polymer foaming gelling light self-insulation material.
As a further technical scheme, the first-stage stirring, the second-stage stirring and the third-stage stirring in the step S3 are respectively as follows:
primary stirring: the rotating speed is 30-60 r/min, and the stirring time is 3 min;
and (3) secondary stirring: the rotating speed is 800-1400 r/min, and the stirring time is 3 min;
third-stage stirring: the rotating speed is 1400-3000 r/min, and the stirring time is 3 min.
As a further technical scheme, the adding amount of the water in the step S3 is 75-80% of the weight of the mixture.
The working principle and the beneficial effects of the invention are as follows:
1. in the invention, the fly ash and the carbide slag are used as main raw materials and are mutually compatible with other additives, so that the prepared full-solid waste polymer foaming gelling light self-heat-insulation material not only has lower density, but also has higher compressive strength, for example, the density is 470kg/cm3The compressive strength is more than 9.8MPa, and the problem that high-strength, low-density and high-quality products are difficult to obtain in the production process of the foamed cementitious light material in the prior art is effectively solved. Meanwhile, the all-solid-waste high-polymer foaming gelling light self-insulation material prepared by the invention has good cohesiveness and low heat conductivity coefficient, and is suitable for popularization and application.
2. According to the invention, the composite binder is added into the raw materials of the full-solid waste high-molecular foaming gelling light self-insulation material, the composite binder is composed of polyethylene glycol, glycerol, N-cocoyl glutamic acid and aluminum dihydrogen tripolyphosphate in specific parts by mass, in the preparation method of the composite binder, the polyethylene glycol is heated to 65-70 ℃, the N-cocoyl glutamic acid and the aluminum dihydrogen tripolyphosphate are added, the mixture is uniformly mixed, then the mixture is cooled to room temperature, and then the glycerol is added for uniform mixing, so that the prepared composite binder can reduce the density of the full-solid waste high-molecular foaming gelling light self-insulation material, and obviously improve the compressive strength and the cohesiveness of the full-solid waste high-molecular foaming gelling light self-insulation material. The addition of the composite binder increases the viscosity of the slurry in the stirring process, so that the viscosity of a liquid film of foam is increased in the foaming process, the breaking time of the liquid film is delayed, the stability of the foam is increased, the foaming efficiency is improved, and the density of the full-solid waste high-polymer foaming gelling light self-insulation material is reduced; on the other hand, the bonding strength of each component in the slurry is improved, so that the compressive strength and the cohesiveness of the all-solid-waste polymer foaming gelling light self-heat-insulation material are improved. The composite binder is composed of polyethylene glycol, glycerol and the like with low melting point, and is melted and absorbs heat in the process of slurry hydration, so that the hydration heat is reduced, the progress of the hydration process is promoted, and the compressive strength of the full-solid waste high-polymer foaming gelling light self-insulation material is improved. .
3. According to the invention, the activator is added into the raw material of the full-solid waste high-molecular foamed gelled light self-insulation material, and the activator is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1:2, so that the density and compressive strength of the full-solid waste high-molecular foamed gelled light self-insulation material are improved. The diethylene triamine pentamethylene phosphonic acid heptasodium salt and the tridecyl alcohol polyether sodium sulfate are compatible with each other, and the interface energy of each component in the slurry is reduced in the stirring process, so that the slurry is uniformly dispersed and more stable, and the density and the compressive strength of the full-solid waste high-polymer foaming gelling light self-insulation material are improved.
4. In the invention, an alkaline activator is added into the raw materials of the full-solid waste high-molecular foaming gelling light self-insulation material, and the mass ratio of the alkaline activator to the water glass is 3: 1, the caking property and the compressive strength of the full-solid waste high-molecular foamed gelled light self-insulation material are obviously improved. The water glass and the magnesium oxide are compatible with each other, so that on one hand, the slurry hydration process is promoted, the compactness of the full-solid waste polymer foaming gelling light self-insulation material is improved, and the compressive strength of the full-solid waste polymer foaming gelling light self-insulation material is improved; on the other hand, the adhesive has good adhesive effect, so that the adhesive property of the all-solid-waste high-polymer foaming gelling light self-insulation material is improved.
5. According to the invention, three-stage stirring is adopted during slurry mixing in the production process, so that the mixing time of the slurry is shortened, and various performances of the all-solid-waste high-polymer foaming gelling light self-insulation material are improved. Wherein, the one-level stirring becomes the slurry with mixture and water primary mixing, adopt low-speed spiral shell area mixer stirring to be favorable to improving broken resistance, the dry and thick characteristics of the thick liquid of adaptation mixture and water mixing initial stage slurry, the one-level stirring becomes fluidic thin slurry with the slurry stirring, the second grade stirring adopts high-speed stirring, share the task of one-level stirring and tertiary stirring, shorten the time of one-level stirring and tertiary stirring, the compression stirring cycle, simultaneously, high-speed stirring has improved the homogeneity and the mobility of slurry greatly, the resistance is little, create the condition for tertiary super high at the uniform velocity stirring. And the third-stage stirring adopts an ultrahigh-speed stirrer to homogenize the slurry at ultrahigh speed, so that the slurry quality reaches the best, the best slurry condition is provided for foaming, and meanwhile, the foaming agent is uniformly mixed into the slurry in a very short time, and the rapid pouring is completed, so that various properties of the prepared all-solid-waste high-polymer foaming gelling light self-insulation material are remarkably improved.
6. In the production process, a mode of combining an autoclaved aeration process and a foaming process is adopted, the fly ash and the carbide slag are used as main raw materials, and the fly ash and the carbide slag are autoclaved by excitation to form the silicate material. Compared with the existing autoclaved aerated technology, the cement which accounts for 10 percent of the total amount of the concrete and the lime which accounts for 18 percent of the total amount of the concrete in the autoclaved aerated technology are removed, and no requirements are required for indexes such as the content of silicon dioxide in the fly ash, the ignition loss and the like, so that the requirements on various indexes of the fly ash are low, and the raw materials are simple and easy to obtain; in addition, the autoclaved aerated concrete in the prior art as a wall material has the problems of powder removal, slag falling, cracking, hollowing and the like caused by poor bonding property of plastering mortar.
7. In the existing foamed concrete, the cement consumption is about 25%, so that the foamed concrete has high water absorption rate, and when the foamed concrete is used as a wall thermal insulation material, the weight of the foamed concrete is increased after rain, so that the foamed concrete partially falls off, and the water absorption rate of the foamed gel lightweight self-thermal insulation material obtained by the production process is 6-10%, so that the water absorption rate is greatly reduced, and the problems of falling off and the like caused by high water absorption rate are solved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The full-solid-waste high-polymer foaming gelling light self-insulation material comprises the following components in parts by weight:
67 parts of fly ash, 12 parts of carbide slag, 1.5 parts of desulfurized gypsum, 0.1 part of foaming agent, 1.5 parts of activating agent, 3 parts of alkaline activator, 0.1 part of water reducing agent and 2 parts of composite binder,
the composite binder is prepared by the following method: heating 2.6 parts of polyethylene glycol 400 to 65-70 ℃, adding 1 part of N-cocoyl glutamic acid and 3.3 parts of aluminium dihydrogen tripolyphosphate, uniformly mixing, cooling to room temperature, adding 3.2 parts of glycerol, and uniformly mixing to obtain a composite binder, wherein a foaming agent is polyvinyl butyral, an activator is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1:2, and an alkaline activator is a mixture of water glass and magnesium oxide in a mass ratio of 3: 1, the water reducing agent is a polycarboxylic acid water reducing agent sold in the market,
the production process comprises the following steps:
s1, weighing each component according to the formula for later use;
s2, respectively crushing and mixing the fly ash, the carbide slag and the desulfurized gypsum, and feeding the mixture to a ball mill for grinding to obtain mixed powder; adding a foaming agent into water with the mass of 10 times of that of the foaming agent, and stirring to obtain a foaming agent suspension;
s3, mixing the mixed powder obtained in the step S2 with an active agent, an alkaline activator, a water reducing agent and a composite binder to obtain a mixture, adding water with the temperature of 40-60 ℃ into the mixture, wherein the adding amount of the water accounts for 75-80% of the weight of the mixture, performing primary stirring at the rotating speed of 30-60 r/min by using a three-screw-belt low-speed stirrer for 3min, performing secondary stirring at the rotating speed of 800-1400 r/min by using a high-speed vertical stirrer for 3min, performing tertiary stirring at the rotating speed of 1400-3000 r/min by using a vertical ultrahigh-speed stirrer for 3min, adding the foaming agent suspension obtained in the step S2 when the tertiary stirring time reaches 2min50S, and performing tertiary stirring for 10S to obtain mixed slurry;
s4, pouring the mixed slurry obtained in the step S3 into a mold cavity, introducing compressed gas through a high-pressure pump, foaming and shaping, demolding to obtain a blank, and performing transverse cutting, longitudinal cutting and face milling and packet covering on the blank obtained through demolding to obtain a cut blank;
s5, performing maintenance on the cut blank obtained in the step S4 according to the steam-curing condition that the vacuum pumping is firstly performed for 40min until the pressure is-0.06 MPa, the temperature and the pressure are uniformly increased to 205 ℃ after the detection, the pressure is 1.1MPa, the temperature and the pressure are reduced to normal temperature and normal pressure after the constant temperature and the constant pressure are performed for 5 hours, and then the temperature and the pressure are reduced to normal temperature and normal pressure, so as to obtain the all-solid-waste high-polymer foamed gel light self-.
Example 2
The full-solid-waste high-polymer foaming gelling light self-insulation material comprises the following components in parts by weight:
105 parts of fly ash, 25 parts of carbide slag, 3.3 parts of desulfurized gypsum, 0.5 part of foaming agent, 3 parts of active agent, 9 parts of alkaline activator, 0.5 part of water reducing agent and 7 parts of composite binder,
the composite binder is prepared by the following method: heating 2.6 parts of polyethylene glycol 400 to 65-70 ℃, adding 1 part of N-cocoyl glutamic acid and 3.3 parts of aluminium dihydrogen tripolyphosphate, uniformly mixing, cooling to room temperature, adding 3.2 parts of glycerol, and uniformly mixing to obtain a composite binder, wherein a foaming agent is polyvinyl butyral, an activator is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1:2, and an alkaline activator is a mixture of water glass and magnesium oxide in a mass ratio of 3: 1, the water reducing agent is a polycarboxylic acid water reducing agent sold in the market,
the production process was the same as in example 1.
Example 3
The full-solid-waste high-polymer foaming gelling light self-insulation material comprises the following components in parts by weight:
74 parts of fly ash, 21 parts of carbide slag, 2.6 parts of desulfurized gypsum, 0.2 part of foaming agent, 2.8 parts of activating agent, 4 parts of alkaline activator, 0.2 part of water reducing agent and 3.5 parts of composite binder,
the composite binder is prepared by the following method: heating 2.6 parts of polyethylene glycol 400 to 65-70 ℃, adding 1 part of N-cocoyl glutamic acid and 3.3 parts of aluminium dihydrogen tripolyphosphate, uniformly mixing, cooling to room temperature, adding 3.2 parts of glycerol, and uniformly mixing to obtain a composite binder, wherein a foaming agent is polyvinyl butyral, an activator is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1:2, and an alkaline activator is a mixture of water glass and magnesium oxide in a mass ratio of 3: 1, the water reducing agent is a polycarboxylic acid water reducing agent sold in the market,
the production process was the same as in example 1.
Example 4
The full-solid-waste high-polymer foaming gelling light self-insulation material comprises the following components in parts by weight:
90 parts of fly ash, 15 parts of carbide slag, 1.8 parts of desulfurized gypsum, 0.4 part of foaming agent, 2.1 parts of activating agent, 7 parts of alkaline activator, 0.4 part of water reducing agent and 6 parts of composite binder,
the composite binder is prepared by the following method: heating 2.6 parts of polyethylene glycol 400 to 65-70 ℃, adding 1 part of N-cocoyl glutamic acid and 3.3 parts of aluminium dihydrogen tripolyphosphate, uniformly mixing, cooling to room temperature, adding 3.2 parts of glycerol, and uniformly mixing to obtain a composite binder, wherein a foaming agent is polyvinyl butyral, an activator is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1:2, and an alkaline activator is a mixture of water glass and magnesium oxide in a mass ratio of 3: 1, the water reducing agent is a polycarboxylic acid water reducing agent sold in the market,
the production process was the same as in example 1.
Example 5
The full-solid-waste high-polymer foaming gelling light self-insulation material comprises the following components in parts by weight:
80 parts of fly ash, 18 parts of carbide slag, 2 parts of desulfurized gypsum, 0.3 part of foaming agent, 2.6 parts of activating agent, 6 parts of alkaline activator, 0.3 part of water reducing agent and 5 parts of composite binder,
the composite binder is prepared by the following method: heating 2.6 parts of polyethylene glycol 400 to 65-70 ℃, adding 1 part of N-cocoyl glutamic acid and 3.3 parts of aluminium dihydrogen tripolyphosphate, uniformly mixing, cooling to room temperature, adding 3.2 parts of glycerol, and uniformly mixing to obtain a composite binder, wherein a foaming agent is polyvinyl butyral, an activator is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1:2, and an alkaline activator is a mixture of water glass and magnesium oxide in a mass ratio of 3: 1, the water reducing agent is a polycarboxylic acid water reducing agent sold in the market,
the production process was the same as in example 1.
Example 6
The full-solid-waste high-polymer foaming gelling light self-insulation material comprises the following components in parts by weight:
80 parts of fly ash, 18 parts of carbide slag, 2 parts of desulfurized gypsum, 0.3 part of foaming agent, 2.6 parts of activating agent, 6 parts of alkaline activator, 0.3 part of water reducing agent and 5 parts of composite binder,
the composite binder is prepared by the following method: heating 1.3 parts of polyethylene glycol 400 to 65-70 ℃, adding 0.5 part of N-cocoyl glutamic acid and 1.5 parts of aluminium dihydrogen tripolyphosphate, uniformly mixing, cooling to room temperature, adding 2.5 parts of glycerol, and uniformly mixing to obtain a composite binder, wherein a foaming agent is polyvinyl butyral, an activator is a mixture of heptasodium diethylenetriamine pentamethylenephosphonate and tridecyl polyether sodium sulfate in a mass ratio of 1:2, and an alkaline activator is a mixture of water glass and magnesium oxide in a mass ratio of 3: 1, the water reducing agent is a polycarboxylic acid water reducing agent sold in the market,
the production process was the same as in example 1.
Example 7
The full-solid-waste high-polymer foaming gelling light self-insulation material comprises the following components in parts by weight:
80 parts of fly ash, 18 parts of carbide slag, 2 parts of desulfurized gypsum, 0.3 part of foaming agent, 2.6 parts of activating agent, 6 parts of alkaline activator, 0.3 part of water reducing agent and 5 parts of composite binder,
the composite binder is prepared by the following method: heating 4.5 parts of polyethylene glycol 400 to 65-70 ℃, adding 1.3 parts of N-cocoyl glutamic acid and 5 parts of aluminium dihydrogen tripolyphosphate, uniformly mixing, cooling to room temperature, adding 4 parts of glycerol, and uniformly mixing to obtain a composite binder, wherein a foaming agent is polyvinyl butyral, an activator is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1:2, and an alkaline activator is a mixture of water glass and magnesium oxide in a mass ratio of 3: 1, the water reducing agent is a polycarboxylic acid water reducing agent sold in the market,
the production process was the same as in example 1.
Example 8
The formula of the all-solid-waste polymer foaming gelling light self-insulation material is the same as that in example 5, and the production process comprises the following steps of S4: pouring the mixed slurry obtained in the step S3 into a mold cavity, introducing compressed gas through a high-pressure pump, performing foaming and shaping, then entering a primary curing chamber for primary curing at the temperature of 50-70 ℃ for 1.5-2 hours, demolding after primary curing to obtain a blank, and performing transverse cutting, longitudinal cutting and face milling and packet covering on the demolded blank to obtain a cut blank;
the rest of the procedure was the same as in example 1.
Comparative example 1
In a formula of the all-solid-waste high-polymer foaming gelling light self-insulation material, a composite binder is prepared by the following method: uniformly mixing 1 part of N-cocoyl glutamic acid and 3.3 parts of aluminium dihydrogen tripolyphosphate, adding 3.2 parts of glycerol, and uniformly mixing to obtain a composite binder;
the other components and the production process are the same as example 5.
Comparative example 2
In a formula of the all-solid-waste high-polymer foaming gelling light self-insulation material, a composite binder is prepared by the following method: heating 2.6 parts of polyethylene glycol 400 to 65-70 ℃, adding 1 part of N-cocoyl glutamic acid and 3.3 parts of aluminium dihydrogen tripolyphosphate, uniformly mixing, and cooling to room temperature to obtain a composite binder;
the other components and the production process are the same as example 5.
Comparative example 3
In a formula of the all-solid-waste high-polymer foaming gelling light self-insulation material, a composite binder is prepared by the following method: heating 2.6 parts of polyethylene glycol 400 to 65-70 ℃, adding 3.3 parts of aluminium dihydrogen tripolyphosphate, uniformly mixing, cooling to room temperature, adding 3.2 parts of glycerol, and uniformly mixing to obtain a composite binder;
the other components and the production process are the same as example 5.
Comparative example 4
In a formula of the all-solid-waste high-polymer foaming gelling light self-insulation material, a composite binder is prepared by the following method: heating 2.6 parts of polyethylene glycol 400 to 65-70 ℃, adding 1 part of N-cocoyl glutamic acid, uniformly mixing, cooling to room temperature, adding 3.2 parts of glycerol, and uniformly mixing to obtain a composite binder;
the other components and the production process are the same as example 5.
Comparative example 5
In a formula of the all-solid-waste high-polymer foaming gelling light self-insulation material, a composite binder is prepared by the following method: uniformly mixing 2.6 parts of polyethylene glycol 400, 1 part of N-cocoyl glutamic acid, 3.3 parts of aluminium dihydrogen tripolyphosphate and 3.2 parts of glycerol to obtain a composite binder;
the other components and the production process are the same as example 5.
Comparative example 6
In the formula of the all-solid-waste high-molecular foamed gel light self-insulation material, an active agent is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1: 1;
the other components and the production process are the same as example 5.
Comparative example 7
In the formula of the all-solid-waste high-molecular foamed gel light self-insulation material, an active agent is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1: 1;
the other components and the production process are the same as example 5.
Comparative example 8
In the formula of the all-solid-waste high-molecular foamed gel light self-insulation material, an active agent is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1: 1;
the other components and the production process are the same as example 5.
Comparative example 9
In the formula of the all-solid-waste high-molecular foamed gel light self-insulation material, an active agent is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1: 1;
the other components and the production process are the same as example 5.
Comparative example 10
In the formula of the all-solid-waste high-polymer foaming gelling light self-insulation material, an alkaline activator is water glass;
the other components and the production process are the same as example 5.
Comparative example 11
In the formula of the all-solid-waste high-polymer foaming gelling light self-heat-insulation material, an alkaline activator is magnesium oxide;
the other components and the production process are the same as example 5.
Comparative example 12
In a formula of the all-solid-waste high-polymer foaming gelling light self-insulation material, an alkaline activator is prepared from water glass and magnesium oxide in a mass ratio of 4: 1;
the other components and the production process are the same as example 5.
Comparative example 13
In a formula of the all-solid-waste high-polymer foaming gelling light self-insulation material, an alkaline activator is prepared from water glass and magnesium oxide in a mass ratio of 2: 1;
the other components and the production process are the same as example 5.
Comparative example 14
The formula of the all-solid-waste polymer foaming gelling light self-insulation material is the same as that in example 5, and the production process comprises the following steps of S3: mixing the mixed powder obtained in the step S2 with an active agent, an alkaline activator, a water reducing agent and a composite binder to obtain a mixture, adding water with the temperature of 40-60 ℃ into the mixture, wherein the adding amount of the water accounts for 75-80% of the weight of the mixture, then stirring for 30min at the rotating speed of 800-1400 r/min by using a high-speed vertical stirrer, adding the foaming agent suspension obtained in the step S2 when the stirring time reaches 29min50S, and then stirring for 10S in a three-stage manner to obtain mixed slurry; the rest of the procedure was the same as in example 1.
Control group 1: common foamed concrete blocks are commercially available.
Control group 2: a common autoclaved aerated concrete block is commercially available and has the model B05.
The total solid waste polymer foaming gelling light self-insulation materials prepared in the embodiments 1-8 and the comparative examples 1-14 and the concrete blocks of the control groups 1-2 are respectively used as samples, the dry density, the compressive strength, the cohesiveness, the water absorption, the tensile strength and the heat conductivity coefficient of the samples are tested according to the test method specified in GB/T29062-2012 autoclaved foam concrete brick and block, and the test results are shown in the following table:
table 1 test results of performances of all-solid-waste polymer foaming, gelling, light-weight and self-heat-insulating materials prepared in examples 1-8 and comparative examples 1-13
As can be seen from the data in Table 1, the total solid waste prepared in examples 1-8 of the present inventionThe high molecular foaming gelling light self-insulation material not only has lower density, but also has higher compressive strength, for example, the density is 470kg/cm3In addition, the all-solid waste high polymer foamed gelled light self-insulation material prepared in the embodiments 1 to 8 of the invention has good cohesiveness and low heat conductivity coefficient, and is suitable for popularization and application.
Compared with the embodiments 1 to 7, the compressive strength of the all-solid-waste polymer foamed cementitious light self-insulation material prepared in embodiment 8 is higher on the premise of lower density, because the production process of the all-solid-waste polymer foamed cementitious light self-insulation material in embodiment 8 firstly enters a primary curing chamber for primary curing after foaming and shaping, and then carries out operations such as demolding and cutting after primary curing, which indicates that the compressive strength of the all-solid-waste polymer foamed cementitious light self-insulation material can be further improved by firstly carrying out primary curing and then carrying out operations such as demolding and primary curing after foaming and shaping.
Compared with the control groups 1 to 2, the compressive strength and the tensile strength of the all-solid-waste polymer foamed gel light self-insulation material prepared in the embodiments 1 to 8 are greatly improved, the tensile strength of the foamed gel light self-insulation material prepared in the embodiments 1 to 8 is above 1/7 of the compressive strength, the tensile strength of the existing concrete block is 1/9-1/10 of the self compressive strength, meanwhile, the compressive strength of the foamed cementitious light self-insulation material of the embodiment 8 is improved by more than 30% compared with the concrete blocks of the comparison group 1 and the comparison group 2, and the tensile strength is improved by more than 100%, in addition, the water absorption of the foamed cementitious light self-insulation material of the embodiments 1 to 8 is remarkably reduced, the water absorption is reduced to 6% -10%, and the problem that the concrete blocks in the prior art are high in water absorption and easily fall off when absorbing water in rainy days as a wall material is effectively solved.
Compared with examples 1 to 8, the density of the all-solid-waste polymer foaming gelling light self-insulation material prepared in comparative examples 1 to 5 is increased, the compressive strength is reduced, and the cohesiveness is reduced, because the polyethylene glycol is not added to the composite binder in the raw material of the all-solid-waste polymer foaming gelling light self-insulation material of comparative example 1, the glycerol is not added to the composite binder in the raw material of the all-solid-waste polymer foaming gelling light self-insulation material of comparative example 2, the N-cocoyl glutamic acid is not added to the composite binder in the raw material of the all-solid-waste polymer foaming gelling light self-insulation material of comparative example 3, the aluminum dihydrogen tripolyphosphate is not added to the composite binder in the raw material of the all-solid-waste polymer foaming gelling light self-insulation material of comparative example 4, and the preparation method of the composite binder in the raw, the composite binder is prepared by heating polyethylene glycol to 65-70 ℃, adding N-cocoyl glutamic acid and aluminum dihydrogen tripolyphosphate, uniformly mixing, cooling to room temperature, adding glycerol, and uniformly mixing, so that the prepared composite binder can reduce the density of the full-solid waste polymer foaming gelling light self-insulation material, and remarkably improve the compressive strength and the cohesiveness of the full-solid waste polymer foaming gelling light self-insulation material. The addition of the composite binder increases the viscosity of the slurry in the stirring process, so that the viscosity of a liquid film of foam is increased in the foaming process, the breaking time of the liquid film is delayed, the stability of the foam is increased, the foaming efficiency is improved, and the density of the full-solid waste high-polymer foaming gelling light self-insulation material is reduced; on the other hand, the bonding strength of each component in the slurry is improved, so that the compressive strength and the cohesiveness of the all-solid-waste polymer foaming gelling light self-heat-insulation material are improved. The composite binder is composed of polyethylene glycol, glycerol and the like with low melting point, and is melted and absorbs heat in the process of slurry hydration, so that the hydration heat is reduced, the progress of the hydration process is promoted, and the compressive strength of the full-solid waste high-polymer foaming gelling light self-insulation material is improved.
Compared with examples 1 to 8, the compressive strength of the all-solid-waste polymer foaming gel light self-insulation material prepared in the comparative examples 6 to 9 is reduced, and the density is slightly reduced, because tridecyl alcohol polyether sodium sulfate is not added to the active agent in the raw material of the all-solid-waste polymer foaming gel light self-insulation material of the comparative example 6, diethylene triamine pentamethylene phosphonic acid heptasodium salt is not added to the active agent in the raw material of the all-solid-waste polymer foaming gel light self-insulation material of the comparative example 7, the active agent in the raw material of the all-solid-waste polymer foaming gel light self-insulation material of the comparative example 8 is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1:1, the active agent in the raw material of the all-solid-waste polymer foaming gel light self-insulation material of the comparative example 9 is a mixture of diethylene triamine pentamethylene phosphonic acid, the method is characterized in that an active agent is added into the raw materials of the all-solid-waste high-molecular foamed gelled light self-insulation material, wherein the active agent is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1:2, and the density and the compressive strength of the all-solid-waste high-molecular foamed gelled light self-insulation material are improved. The diethylene triamine pentamethylene phosphonic acid heptasodium salt and the tridecyl alcohol polyether sodium sulfate are compatible with each other, and the interface energy of each component in the slurry is reduced in the stirring process, so that the slurry is uniformly dispersed and more stable, and the density and the compressive strength of the full-solid waste high-polymer foaming gelling light self-insulation material are improved.
Compared with examples 1 to 8, the compressive strength of the all-solid-waste polymer foaming gelling light self-insulation material prepared in comparative examples 10 to 13 is reduced, and the cohesiveness is reduced, because magnesium oxide is not added to the alkali activator in the raw material of the all-solid-waste polymer foaming gelling light self-insulation material of comparative example 10, water glass is not added to the alkali activator in the raw material of the all-solid-waste polymer foaming gelling light self-insulation material of comparative example 11, and the mass ratio of the alkali activator in the raw material of the all-solid-waste polymer foaming gelling light self-insulation material of comparative example 12 to water glass to magnesium oxide is 4: 1, the alkali activator in the raw material of the total solid waste polymer foaming gelling light self-insulation material of the comparative example 13 is water glass and magnesium oxide in a mass ratio of 2: 1, namely adding an alkaline activator into the raw material of the all-solid-waste high-molecular foamed gelled light self-insulation material, wherein the alkaline activator is water glass and magnesium oxide in a mass ratio of 3: 1, the caking property and the compressive strength of the full-solid waste high-molecular foamed gelled light self-insulation material are obviously improved. The water glass and the magnesium oxide are compatible with each other, so that on one hand, the slurry hydration process is promoted, the compactness of the full-solid waste polymer foaming gelling light self-insulation material is improved, and the compressive strength of the full-solid waste polymer foaming gelling light self-insulation material is improved; on the other hand, the adhesive has good adhesive effect, so that the adhesive property of the all-solid-waste high-polymer foaming gelling light self-insulation material is improved.
Compared with the examples 1 to 8, the density, the thermal conductivity coefficient, the cohesiveness and the compressive strength of the all-solid-waste polymer foamed cementitious light self-insulation material prepared in the comparative example 14 are increased, and the three-stage stirring is not adopted in the slurry mixing in the production process of the comparative example 14, which indicates that the three-stage stirring is adopted in the slurry mixing, so that the mixing time of the slurry is shortened, and the performances of the all-solid-waste polymer foamed cementitious light self-insulation material are improved. Wherein, the one-level stirring becomes the slurry with mixture and water primary mixing, adopt low-speed spiral shell area mixer stirring to be favorable to improving broken resistance, the dry and thick characteristics of the thick liquid of adaptation mixture and water mixing initial stage slurry, the one-level stirring becomes fluidic thin slurry with the slurry stirring, the second grade stirring adopts high-speed stirring, share the task of one-level stirring and tertiary stirring, shorten the time of one-level stirring and tertiary stirring, the compression stirring cycle, simultaneously, high-speed stirring has improved the homogeneity and the mobility of slurry greatly, the resistance is little, create the condition for tertiary super high at the uniform velocity stirring. And the third-stage stirring adopts an ultrahigh-speed stirrer to homogenize the slurry at ultrahigh speed, so that the slurry quality reaches the best, the best slurry condition is provided for foaming, and meanwhile, the foaming agent is uniformly mixed into the slurry in a very short time, and the rapid pouring is completed, so that various properties of the prepared all-solid-waste high-polymer foaming gelling light self-insulation material are remarkably improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The full-solid-waste high-polymer foaming gelling light self-insulation material is characterized by comprising the following components in parts by weight:
67-105 parts of fly ash, 12-25 parts of carbide slag, 1.5-3.3 parts of desulfurized gypsum, 0.1-0.5 part of foaming agent, 1.5-3 parts of activator, 3-9 parts of alkaline activator, 0.1-0.5 part of water reducing agent and 2-7 parts of composite binder,
the composite binder comprises the following components in parts by mass:
1.3-4.5 parts of polyethylene glycol, 2.5-4 parts of glycerol, 0.5-1.3 parts of N-cocoyl glutamic acid and 1.5-5 parts of aluminum dihydrogen tripolyphosphate.
2. The all-solid-waste high-polymer foaming gelling light self-insulation material as claimed in claim 1, is characterized by comprising the following components in parts by weight:
80 parts of fly ash, 18 parts of carbide slag, 2 parts of desulfurized gypsum, 0.3 part of foaming agent, 2.6 parts of activating agent, 6 parts of alkaline activator, 0.3 part of water reducing agent and 5 parts of composite binder,
the composite binder comprises the following components in parts by mass:
2.6 parts of polyethylene glycol, 3.2 parts of glycerol, 1 part of N-cocoyl glutamic acid and 3.3 parts of aluminium dihydrogen tripolyphosphate.
3. The all-solid-waste high-polymer foaming gelling light self-insulation material as claimed in claim 1 or 2, wherein the molecular weight of the polyethylene glycol is 400.
4. The all-solid-waste high-polymer foaming gelling light self-insulation material as claimed in claim 3, wherein the preparation method of the composite binder is as follows: heating polyethylene glycol to 65-70 ℃, adding N-cocoyl glutamic acid and aluminium dihydrogen tripolyphosphate, uniformly mixing, cooling to room temperature, adding glycerol, and uniformly mixing to obtain the composite binder.
5. The all-solid-waste high-polymer foaming gelling light self-insulation material as claimed in claim 3, wherein the foaming agent is polyvinyl butyral.
6. The full-solid waste polymer foaming gelling light self-insulation material as claimed in claim 3, wherein the activating agent is a mixture of diethylene triamine pentamethylene phosphonic acid heptasodium salt and tridecyl alcohol polyether sodium sulfate in a mass ratio of 1: 2.
7. The all-solid-waste high-polymer foaming gelling light self-insulation material as claimed in claim 3, wherein the alkali activator is water glass and magnesium oxide in a mass ratio of 3: 1.
8. A production process of a full-solid waste high polymer foaming gelling light self-insulation material is characterized by comprising the following steps:
s1, weighing all components for later use according to the formula of the all-solid-waste polymer foaming gelling light self-insulation material as claimed in any one of claims 1 to 7;
s2, mixing the fly ash, the carbide slag and the desulfurized gypsum, and grinding the mixture into powder to obtain mixed powder; adding a foaming agent into water with the mass of 10 times of that of the foaming agent, and stirring to obtain a foaming agent suspension;
s3, mixing the mixed powder obtained in the step S2 with an active agent, an alkaline activator, a water reducing agent and a composite binder to obtain a mixture, adding water with the temperature of 40-60 ℃ into the mixture, sequentially carrying out primary stirring, secondary stirring and tertiary stirring, adding the foaming agent suspension obtained in the step S2 when 10S before the tertiary stirring is finished, and uniformly stirring to obtain mixed slurry;
s4, pouring the mixed slurry obtained in the step S3, carrying out autoclaved aerated foaming, shaping, demoulding and cutting to obtain a blank;
and S5, carrying out autoclaved curing on the blank obtained in the step S4 to obtain the full-solid waste high polymer foaming gelling light self-insulation material.
9. The production process of the all-solid-waste high-polymer foaming gelling light self-insulation material according to claim 8, wherein the first-stage stirring, the second-stage stirring and the third-stage stirring in the step S3 are respectively as follows:
primary stirring: the rotating speed is 30-60 r/min, and the stirring time is 3 min;
and (3) secondary stirring: the rotating speed is 800-1400 r/min, and the stirring time is 3 min;
third-stage stirring: the rotating speed is 1400-3000 r/min, and the stirring time is 3 min.
10. The production process of the all-solid-waste high-polymer foaming gelling light self-insulation material as claimed in claim 8, wherein the amount of water added in step S3 is 75-80% of the weight of the mixture.
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