CN112759331B - Quick-drying waterproof plastering mortar and preparation method thereof - Google Patents
Quick-drying waterproof plastering mortar and preparation method thereof Download PDFInfo
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- CN112759331B CN112759331B CN202110180361.9A CN202110180361A CN112759331B CN 112759331 B CN112759331 B CN 112759331B CN 202110180361 A CN202110180361 A CN 202110180361A CN 112759331 B CN112759331 B CN 112759331B
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00508—Cement paints
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Curing Cements, Concrete, And Artificial Stone (AREA)
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Abstract
The invention provides quick-drying waterproof plastering mortar and a preparation method thereof, wherein the mortar comprises the following components, by weight, 80-120 parts of portland cement, 60-90 parts of river sand, 40-80 parts of modified mineral powder, 10-15 parts of composite fiber pulp, 2-5 parts of a water reducing agent and 80-150 parts of water, wherein the modified mineral powder comprises volcanic rock, water-soluble amino clay, solvent-type thermoplastic acrylic resin and an activating agent; the composite fiber slurry comprises glass fiber and hydrophobic rock wool board; according to the preparation method, the components are promoted to be matched among steps through reasonable selection and matching of the raw materials, cooperative compatibility among the components and optimized and improved matching, the prepared plastering mortar is good in fine leveling property, high in drying speed, and remarkably improved in comprehensive performance and application benefit.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to quick-drying waterproof plastering mortar and a preparation method thereof.
Background
Plastering mortar is a general name of mortar which is coated on a building base surface to provide protection. According to different operations, the plastering mortar is divided into field stirring mortar and premixed dry-mixed plastering mortar, wherein the premixed dry-mixed plastering mortar is one of commercial mortars, and the premixed dry-mixed plastering mortar is prepared from cement, a filler, an aggregate and various functional additives. Plastering mortar with different functions is applied to different wall base materials. For example, the mortar is suitable for lightweight walls such as aerated concrete blocks, fly ash blocks, ceramsite bricks and the like, and plastering mortar which is directly scraped on the surface of a concrete shear wall and the like.
The quick-drying type plastering mortar is one of plastering mortars, can be quickly dried and formed after being used, but the existing preparation method of the quick-drying type plastering mortar has the defects that the plastering surface is not smooth and fine enough when in use, and the rough feeling is easy to generate. Moreover, with the development of polymer cement mortar, in the field of building materials, the requirement on the quick drying time of the cement mortar is higher and higher, and meanwhile, the characteristics of better compressive strength and the like of the cement after quick drying are ensured.
Disclosure of Invention
In view of the above, the invention aims to provide a quick-drying waterproof plastering mortar and a preparation method thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
a quick-drying waterproof plastering mortar comprises, by weight, 80-120 parts of portland cement, 60-90 parts of river sand, 40-80 parts of modified mineral powder, 10-15 parts of composite fiber pulp, 2-5 parts of a water reducing agent and 80-150 parts of water, wherein the modified mineral powder comprises vesuvianite, water-soluble amino clay, solvent-type thermoplastic acrylic resin and an activating agent; the composite fiber slurry comprises glass fiber and hydrophobic rock wool board;
the preparation method of the quick-drying waterproof plastering mortar comprises the following steps,
1) taking materials according to parts by weight, putting the modified ore powder into 10g/L sodium bicarbonate solution with the volume 2 times of that of the modified ore powder, performing ultrasonic treatment for 5-10min, then adding river sand into the solution, and uniformly stirring the mixture at 60-80rpm to obtain a first mixed material;
2) and (2) blending the first mixed material, the portland cement and the water reducing agent, adding water, stirring at 60-80rpm for 2-5min, then adding the composite fiber pulp under the stirring condition, and continuously stirring for 1-3min to obtain the composite fiber cement.
As a further preferred mode of the invention, the ultrasonic treatment in the step 1) is 32-35KHz and 250W.
The invention is further preferably characterized in that the modified ore powder comprises 15-40% of the volcanic rock, 15-40% of the water-soluble amino clay, 2-6% of the activating agent and the balance of the solvent type thermoplastic acrylic resin by mass percent.
Further preferably, the activator is a mixture of an activator and a surfactant in a mass ratio of 0-0.5: 1 coconut oil fatty acid diethanolamide, alkanolamide and polyvinylpyrrolidone.
The invention is further preferably, the preparation method of the modified ore powder comprises the steps of blending the vesuvianite and the water-soluble amino clay, adding water, grinding for 5-20min, drying in an inert atmosphere, crushing until the mixture passes through a 20-mesh sieve to obtain a mixed powder, adding the activating agent into the solvent type thermoplastic acrylic resin, stirring and uniformly mixing, slowly adding the mixed powder into the solvent type thermoplastic acrylic resin under the stirring condition of 80-100rpm, continuously stirring for 5-10min after the addition is finished, drying in the inert atmosphere, and crushing until the mixture passes through a 30-mesh sieve to obtain the modified ore powder.
Further preferably, the water for grinding is 40-80% of the total mass of the volcanic rock and the water-soluble amino clay, and the grinding speed is 700-800 rpm.
According to the invention, the mass ratio of the glass fiber to the hydrophobic rock wool board in the composite fiber pulp is more preferably 1: 0-1.
The composite fiber pulp is further preferably prepared by the steps of taking materials according to the mass ratio, placing the glass fiber in acid liquor and alkali liquor in sequence for soaking and ultrasonic treatment, and shearing the glass fiber to be less than 1mm for later use after washing; grinding the hydrophobic rock wool board into slurry by a mechanical grinding method, then adding a proper amount of activating agent into the slurry, stirring for 5-30min under heat preservation, filtering out nitrogen atmosphere, drying to obtain powder, and sieving with a 20-mesh sieve for later use; and mixing the treated chopped glass fiber and the ground hydrophobic rock wool board powder, and mixing the mixture with water according to the solid-liquid ratio of 1:2-4 to obtain slurry when in use.
As a further preference of the invention, the acid solution infiltration is 1M hydrochloric acid solution infiltration for 5-10h, the alkali solution infiltration is 1M sodium hydroxide solution infiltration for 5-10h, the ultrasonic treatment is 30KHz, 300W and normal temperature, and the ultrasonic treatment time per hour is 10-15min, and the operation is performed at equal intervals.
In a further preferred embodiment of the present invention, the activator is a mixture of polyvinylpyrrolidone and KH560 in a mass ratio of 1: 0.6.
The invention has the beneficial effects that: according to the preparation method, the components are promoted to be matched among steps through reasonably selecting and matching the raw materials, the components are cooperatively matched, the prepared plastering mortar is good in fineness and leveling property, high in drying speed, remarkably improved in comprehensive performance and remarkably improved in application benefit.
The modified ore powder is added, the dispersibility and the self-repairing leveling effect are good, the prepared mortar is fine and uniform, a volcanic high-porosity structure is coated and embedded under the action of the amino clay, the sag resistance is strong, the surface layer is a high-reaction-activity interface after the inertia activation, the volcanic high-porosity structure is in blending connection with the high-molecular acrylic resin, the adhesion effect is obviously improved, the volcanic high-porosity structure is suitable for chemical bonding connection, and the connection strength and the stability among the components are improved. In the preparation process, ultrasonic treatment is performed in a sodium bicarbonate solution, an alkaline solution is matched under high-energy impact, the promotion effect on the reduction of the surface energy of the ore powder is achieved, and then the mixture is mixed with river sand, so that the dispersion uniformity is high, the reinforcing effect is good, excellent reaction efficiency is provided for later-stage cement mixing, the performance improvement effect is good, hydration heat release is matched, gas released by sodium bicarbonate has excellent promotion performance on component dispersion and activation, the rheological effect is improved, meanwhile, the fine differentiation of slurry is obviously improved, and the mechanical property and the connectivity are further improved by matching with subsequent composite fiber slurry.
The composite fiber is used for strengthening, is used as an intermolecular connecting chain and consists of glass fiber and hydrophobic rock wool boards, and is compounded with the glass fiber and the hydrophobic rock wool boards, so that the prepared fiber pulp has a good dispersing effect, is not agglomerated, can be effectively dispersed in mortar after being subjected to targeted activation treatment, can form an excellent connecting and combining surface with a plastering surface layer in a use process, is stable and anti-stripping, has an excellent waterproof and quick-drying effect, is high in comprehensive practicability and cost performance, and is worthy of popularization and application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1:
a quick-drying waterproof plastering mortar comprises the following components, by weight, 110 parts of Portland cement, 70 parts of river sand, 50 parts of modified mineral powder, 12 parts of composite fiber slurry, 4 parts of a water reducing agent and 100 parts of water, wherein the modified mineral powder comprises vesuvianite, water-soluble amino clay, solvent-type thermoplastic acrylic resin and an activating agent; the composite fiber pulp comprises glass fiber and hydrophobic rock wool boards;
the preparation method of the quick-drying waterproof plastering mortar comprises the following steps,
1) taking materials according to parts by weight, putting the modified ore powder into a 10g/L sodium bicarbonate solution with the volume being 2 times of that of the modified ore powder, carrying out ultrasonic treatment for 5min at 35KHz and 250W, then adding river sand into the solution, and uniformly stirring the mixture at 60-80rpm to obtain a first mixed material;
2) and blending the first mixed material, the Portland cement and the water reducing agent, adding water, stirring at 60-80rpm for 2-5min, adding the composite fiber pulp under the stirring condition, and continuously stirring for 1-3min to obtain the composite fiber cement.
Further, the modified ore powder comprises, by mass, 20% of volcanic rock, 20% of water-soluble amino clay, 5% of an activating agent and the balance solvent-based thermoplastic acrylic resin. Wherein the activating agent is prepared from the following components in a mass ratio of 0.2: 1 coconut oil fatty acid diethanolamide, alkanolamide and polyvinylpyrrolidone.
The preparation method of the modified ore powder comprises the steps of blending the volcanic rock and the water-soluble amino clay, adding water, grinding for 20min (the grinding water accounts for 60% of the total mass of the volcanic rock and the water-soluble amino clay, and the grinding rotating speed is 500rpm), drying in an inert atmosphere, crushing to 20 meshes to obtain mixed powder, adding an activating agent into the solvent type thermoplastic acrylic resin, stirring and uniformly mixing, slowly adding the mixed powder into the solvent type thermoplastic acrylic resin under the stirring condition of 80-100rpm, continuously stirring for 5-10min after the addition is finished, drying in an inert atmosphere, crushing to 30 meshes, and obtaining the modified ore powder.
Furthermore, the mass ratio of the glass fiber to the hydrophobic rock wool board in the composite fiber slurry is 1: 0.5.
The preparation method of the composite fiber pulp comprises the steps of taking materials according to the mass ratio, placing glass fibers in acid liquor and alkali liquor in sequence for soaking and ultrasonic treatment, and cutting the glass fibers to be less than 1mm for later use after washing; grinding the hydrophobic rock wool board into slurry by a mechanical grinding method, then adding a proper amount of activating agent into the slurry, stirring for 5-30min under heat preservation, filtering out nitrogen atmosphere, drying to obtain powder, and sieving with a 20-mesh sieve for later use; and mixing the treated chopped glass fiber and the ground hydrophobic rock wool board powder, and mixing the mixture with water according to the solid-liquid ratio of 1:3 to obtain slurry when in use.
Wherein the acid solution is 1M hydrochloric acid solution for 10h, the alkali solution is 1M sodium hydroxide solution for 10h, the ultrasonic treatment is at normal temperature of 300W at 30KHz, and the ultrasonic treatment time per hour is 10min, and the operation is performed at equal intervals. The activating agent is a mixture of polyvinylpyrrolidone and KH560 with the mass ratio of 1: 0.6.
Example 2:
a quick-drying waterproof plastering mortar comprises the following components, by weight, 120 parts of Portland cement, 80 parts of river sand, 80 parts of modified mineral powder, 15 parts of composite fiber slurry, 5 parts of a water reducing agent and 140 parts of water, wherein the modified mineral powder comprises vesuvianite, water-soluble amino clay, solvent-type thermoplastic acrylic resin and an activating agent; the composite fiber slurry comprises glass fiber and hydrophobic rock wool board;
the preparation method of the quick-drying waterproof plastering mortar comprises the following steps,
1) taking materials according to parts by weight, putting modified ore powder into 10g/L sodium bicarbonate solution with the volume being 2 times of that of the modified ore powder, carrying out ultrasonic treatment for 10min at 35KHz and 250W, then adding river sand into the solution, and uniformly stirring the mixture at 60-80rpm to obtain a first mixed material;
2) and (2) blending the first mixed material, the portland cement and the water reducing agent, adding water, stirring at 60-80rpm for 2-5min, then adding the composite fiber pulp under the stirring condition, and continuously stirring for 1-3min to obtain the composite fiber cement.
Further, the modified ore powder comprises, by mass, 40% of volcanic rock, 15% of water-soluble amino clay, 5% of an activating agent and the balance solvent-based thermoplastic acrylic resin. Wherein the activating agent is prepared from the following components in a mass ratio of 0.2: 1 coconut oil fatty acid diethanolamide, alkanolamide and polyvinylpyrrolidone.
The preparation method of the modified ore powder comprises the steps of blending the volcanic rock and the water-soluble amino clay, adding water, grinding for 20min (the grinding water accounts for 80% of the total mass of the volcanic rock and the water-soluble amino clay, and the grinding rotating speed is 700rpm), drying in an inert atmosphere, crushing to 20 meshes to obtain mixed powder, adding an activating agent into the solvent type thermoplastic acrylic resin, stirring and uniformly mixing, slowly adding the mixed powder into the solvent type thermoplastic acrylic resin under the stirring condition of 80-100rpm, continuously stirring for 5-10min after the addition is finished, drying in an inert atmosphere, crushing to 30 meshes to obtain the modified ore powder.
Furthermore, the mass ratio of the glass fiber to the hydrophobic rock wool board in the composite fiber slurry is 1: 0.5.
The preparation method of the composite fiber pulp comprises the steps of taking materials according to the mass ratio, placing glass fibers in acid liquor and alkali liquor in sequence for soaking and ultrasonic treatment, and cutting the glass fibers to be less than 1mm for later use after washing; grinding the hydrophobic rock wool board into slurry by a mechanical grinding method, then adding a proper amount of activating agent into the slurry, stirring for 5-30min under heat preservation, filtering out nitrogen atmosphere, drying to obtain powder, and sieving with a 20-mesh sieve for later use; and mixing the treated chopped glass fiber and the ground hydrophobic rock wool board powder, and mixing the mixture with water according to the solid-liquid ratio of 1:3 to obtain slurry when in use.
Wherein the acid solution is 1M hydrochloric acid solution for 10h, the alkali solution is 1M sodium hydroxide solution for 10h, the ultrasonic treatment is at normal temperature of 300W at 30KHz, and the ultrasonic treatment time per hour is 10min, and the operation is performed at equal intervals. The activating agent is a mixture of polyvinylpyrrolidone and KH560 in a mass ratio of 1: 0.6.
Example 3:
a quick-drying waterproof plastering mortar comprises the following components, by weight, 80 parts of portland cement, 60 parts of river sand, 60 parts of modified mineral powder, 10 parts of composite fiber slurry, 3 parts of a water reducing agent and 100 parts of water, wherein the modified mineral powder comprises vesuvianite, water-soluble amino clay, solvent-type thermoplastic acrylic resin and an activating agent; the composite fiber slurry comprises glass fiber and hydrophobic rock wool board;
the preparation method of the quick-drying waterproof plastering mortar comprises the following steps,
1) taking materials according to parts by weight, putting the modified ore powder into a 10g/L sodium bicarbonate solution with the volume being 2 times of that of the modified ore powder, carrying out ultrasonic treatment for 10min at 32KHz and 250W, then adding river sand into the solution, and uniformly stirring the mixture at 60-80rpm to obtain a first mixed material;
2) and (2) blending the first mixed material, the portland cement and the water reducing agent, adding water, stirring at 60-80rpm for 2-5min, then adding the composite fiber pulp under the stirring condition, and continuously stirring for 1-3min to obtain the composite fiber cement.
Further, the modified ore powder comprises, by mass, 30% of volcanic rock, 20% of water-soluble amino clay, 5% of an activating agent and the balance solvent-based thermoplastic acrylic resin. Wherein the mass ratio of the activating agent to the activating agent is 0.5: 0: 1 coconut oil fatty acid diethanolamide, alkanolamide and polyvinylpyrrolidone.
The preparation method of the modified ore powder comprises the steps of blending the volcanic rock and the water-soluble amino clay, adding water, grinding for 20min (the grinding water accounts for 80% of the total mass of the volcanic rock and the water-soluble amino clay, and the grinding rotating speed is 700rpm), drying in an inert atmosphere, crushing to 20 meshes to obtain mixed powder, adding an activating agent into the solvent type thermoplastic acrylic resin, stirring and uniformly mixing, slowly adding the mixed powder into the solvent type thermoplastic acrylic resin under the stirring condition of 80-100rpm, continuously stirring for 5-10min after the addition is finished, drying in an inert atmosphere, crushing to 30 meshes to obtain the modified ore powder.
Furthermore, the mass ratio of the glass fiber to the hydrophobic rock wool board in the composite fiber slurry is 1: 1.
The preparation method of the composite fiber pulp comprises the steps of taking materials according to the mass ratio, placing glass fibers in acid liquor and alkali liquor in sequence for soaking and ultrasonic treatment, and cutting the glass fibers to be less than 1mm for later use after washing; grinding the hydrophobic rock wool plate into slurry by a mechanical grinding method, then adding a proper amount of activating agent into the slurry, keeping the temperature and stirring for 5-30min, filtering out nitrogen atmosphere, drying to obtain powder, and sieving with a 20-mesh sieve for later use; and (3) blending the treated chopped glass fiber and the ground hydrophobic rock wool board powder, and mixing the mixture with water according to the solid-to-liquid ratio of 1:4 to obtain slurry when the mixture is used.
Wherein the acid solution is 1M hydrochloric acid solution for 10h, the alkali solution is 1M sodium hydroxide solution for 10h, the ultrasonic treatment is at 30KHz, 300W and normal temperature, the ultrasonic treatment time per hour is 15min, and the operation is performed at equal intervals. The activating agent is a mixture of polyvinylpyrrolidone and KH560 with the mass ratio of 1: 0.6.
Example 4:
a quick-drying waterproof plastering mortar comprises the following components, by weight, 100 parts of portland cement, 70 parts of river sand, 50 parts of modified mineral powder, 15 parts of composite fiber slurry, 4 parts of a water reducing agent and 80 parts of water, wherein the modified mineral powder comprises vesuvianite, water-soluble amino clay, solvent-type thermoplastic acrylic resin and an activating agent; the composite fiber pulp comprises glass fiber and hydrophobic rock wool boards;
the preparation method of the quick-drying waterproof plastering mortar comprises the following steps,
1) taking materials according to parts by weight, putting the modified ore powder into a 10g/L sodium bicarbonate solution with the volume being 2 times of that of the modified ore powder, carrying out ultrasonic treatment for 5min at 35KHz and 250W, then adding river sand into the solution, and uniformly stirring the mixture at 60-80rpm to obtain a first mixed material;
2) and (2) blending the first mixed material, the portland cement and the water reducing agent, adding water, stirring at 60-80rpm for 2-5min, then adding the composite fiber pulp under the stirring condition, and continuously stirring for 1-3min to obtain the composite fiber cement.
Further, the modified ore powder comprises 20 mass percent of volcanic rock, 40 mass percent of water-soluble amino clay, 3 mass percent of activating agent and the balance of solvent type thermoplastic acrylic resin. Wherein the mass ratio of the activating agent to the activating agent is 0.5: 0.2: 1 coconut oil fatty acid diethanolamide, alkanolamide and polyvinylpyrrolidone.
The preparation method of the modified ore powder comprises the steps of blending the volcanic rock and the water-soluble amino clay, adding water, grinding for 10min (the grinding water accounts for 50% of the total mass of the volcanic rock and the water-soluble amino clay, and the grinding rotating speed is 800rpm), drying in an inert atmosphere, crushing to 20 meshes to obtain mixed powder, adding an activating agent into the solvent type thermoplastic acrylic resin, stirring and uniformly mixing, slowly adding the mixed powder into the solvent type thermoplastic acrylic resin under the stirring condition of 80-100rpm, continuously stirring for 5-10min after the addition is finished, drying in an inert atmosphere, crushing to 30 meshes, and obtaining the modified ore powder.
Furthermore, the mass ratio of the glass fiber to the hydrophobic rock wool board in the composite fiber slurry is 1: 1.
The preparation method of the composite fiber pulp comprises the steps of taking materials according to the mass ratio, placing glass fibers in acid liquor and alkali liquor in sequence for soaking and ultrasonic treatment, and shearing the glass fibers to be less than 1mm for later use after washing; grinding the hydrophobic rock wool plate into slurry by a mechanical grinding method, then adding a proper amount of activating agent into the slurry, keeping the temperature and stirring for 5-30min, filtering out nitrogen atmosphere, drying to obtain powder, and sieving with a 20-mesh sieve for later use; and (3) blending the treated chopped glass fiber and the ground hydrophobic rock wool board powder, and mixing the mixture with water according to the solid-to-liquid ratio of 1:4 to obtain slurry when the mixture is used.
Wherein the acid solution is soaked in 1M hydrochloric acid solution for 5h, the alkali solution is soaked in 1M sodium hydroxide solution for 5h, the ultrasonic treatment is performed at 30KHz, 300W and normal temperature, the ultrasonic treatment time per hour is 15min, and the operation is performed at equal intervals. The activating agent is a mixture of polyvinylpyrrolidone and KH560 in a mass ratio of 1: 0.6.
Example 5:
a quick-drying waterproof plastering mortar comprises the following components, by weight, 80 parts of portland cement, 60 parts of river sand, 60 parts of modified mineral powder, 15 parts of composite fiber slurry, 5 parts of a water reducing agent and 80 parts of water, wherein the modified mineral powder comprises vesuvianite, water-soluble amino clay, solvent-type thermoplastic acrylic resin and an activating agent; the composite fiber pulp comprises glass fiber and hydrophobic rock wool boards;
the preparation method of the quick-drying waterproof plastering mortar comprises the following steps,
1) taking materials according to parts by weight, putting the modified ore powder into a 10g/L sodium bicarbonate solution with the volume being 2 times of that of the modified ore powder, carrying out ultrasonic treatment for 5min at 35KHz and 250W, then adding river sand into the solution, and uniformly stirring the mixture at 60-80rpm to obtain a first mixed material;
2) and blending the first mixed material, the Portland cement and the water reducing agent, adding water, stirring at 60-80rpm for 2-5min, adding the composite fiber pulp under the stirring condition, and continuously stirring for 1-3min to obtain the composite fiber cement.
Further, the modified ore powder comprises 15 mass percent of volcanic rock, 40 mass percent of water-soluble amino clay, 6 mass percent of activating agent and the balance of solvent type thermoplastic acrylic resin. Wherein the mass ratio of the activating agent to the activating agent is 0.2: 1 coconut oil fatty acid diethanolamide, alkanolamide and polyvinylpyrrolidone.
The preparation method of the modified ore powder comprises the steps of blending the volcanic rock and the water-soluble amino clay, adding water, grinding for 10min (the grinding water accounts for 40% of the total mass of the volcanic rock and the water-soluble amino clay, and the grinding rotating speed is 700rpm), drying in an inert atmosphere, crushing to 20 meshes to obtain mixed powder, adding an activating agent into the solvent type thermoplastic acrylic resin, stirring and uniformly mixing, slowly adding the mixed powder into the solvent type thermoplastic acrylic resin under the stirring condition of 80-100rpm, continuously stirring for 5-10min after the addition is finished, drying in an inert atmosphere, crushing to 30 meshes, and obtaining the modified ore powder.
Furthermore, the mass ratio of the glass fiber to the hydrophobic rock wool board in the composite fiber slurry is 1: 0.5.
The preparation method of the composite fiber pulp comprises the steps of taking materials according to the mass ratio, placing glass fibers in acid liquor and alkali liquor in sequence for soaking and ultrasonic treatment, and cutting the glass fibers to be less than 1mm for later use after washing; grinding the hydrophobic rock wool board into slurry by a mechanical grinding method, then adding a proper amount of activating agent into the slurry, stirring for 5-30min under heat preservation, filtering out nitrogen atmosphere, drying to obtain powder, and sieving with a 20-mesh sieve for later use; and mixing the treated chopped glass fiber and the ground hydrophobic rock wool board powder, and mixing the mixture with water according to the solid-liquid ratio of 1:4 to obtain slurry when in use.
Wherein the acid solution is soaked in 1M hydrochloric acid solution for 80h, the alkali solution is soaked in 1M sodium hydroxide solution for 5h, the ultrasonic treatment is performed at 30KHz, 300W and normal temperature, the ultrasonic treatment time per hour is 10min, and the operation is performed at equal intervals. The activating agent is a mixture of polyvinylpyrrolidone and KH560 in a mass ratio of 1: 0.6.
Comparative example 1:
based on example 1, modified ore powder was removed and replaced with river sand, and other conditions were unchanged to prepare a plastering mortar.
Comparative example 2:
based on example 1, composite fiber slurry was removed, river sand was used instead of the composite fiber slurry, and other conditions were not changed to prepare a plastering mortar.
Comparative example 3:
based on example 1, modified mineral powder and composite fiber slurry were removed, and river sand was used instead of the modified mineral powder and composite fiber slurry, and other conditions were not changed to prepare a plastering mortar.
The plastering mortars prepared in the above examples 1 to 5 and comparative examples 1 to 3 were subjected to performance tests, and the data are as follows:
| compressive strength, MPa | Setting time, h | Impervious strength, MPa | Water retention rate% | |
| Example 1 | 12.4 | ＜4.5 | 4.9 | 94.2 |
| Example 2 | 12.6 | ＜4.5 | 5.0 | 93.6 |
| Example 3 | 13.0 | ＜4.5 | 5.1 | 93.5 |
| Example 4 | 12.5 | ＜4.5 | 4.8 | 94.1 |
| Example 5 | 12.7 | ＜4.5 | 5.0 | 93.7 |
| Comparative example 1 | 9.2 | ＜5.5 | 3.2 | 83.3 |
| Comparative example 2 | 10.4 | ＜5 | 3.4 | 89.8 |
| Comparative example 3 | 8.3 | ＜7 | 1.9 | 78.4 |
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a quick-drying type waterproof plastering mortar which characterized in that: the modified mineral powder comprises, by weight, 80-120 parts of portland cement, 60-90 parts of river sand, 40-80 parts of modified mineral powder, 10-15 parts of composite fiber slurry, 2-5 parts of a water reducing agent and 80-150 parts of water, wherein the modified mineral powder comprises volcanic rock, water-soluble amino clay, solvent-type thermoplastic acrylic resin and an activating agent; the composite fiber pulp comprises glass fiber and hydrophobic rock wool boards;
the preparation method of the quick-drying waterproof plastering mortar comprises the following steps,
1) taking materials according to parts by weight, putting the modified ore powder into 10g/L sodium bicarbonate solution with the volume 2 times of that of the modified ore powder, performing ultrasonic treatment for 5-10min, then adding river sand into the solution, and uniformly stirring the mixture at 60-80rpm to obtain a first mixed material;
2) blending the first mixed material, portland cement and a water reducing agent, adding water, stirring at 60-80rpm for 2-5min, then adding composite fiber pulp under the stirring condition, and continuously stirring for 1-3min to obtain the composite fiber pulp;
the modified ore powder comprises 15-40% of volcanic rock, 15-40% of water-soluble amino clay, 2-6% of an activating agent and the balance solvent type thermoplastic acrylic resin by mass percent;
the activating agent is prepared from the following components in a mass ratio of 0-0.5: 1 coconut oil fatty acid diethanolamide, alkanolamide and polyvinylpyrrolidone;
the preparation method of the composite fiber pulp comprises the steps of taking materials according to the mass ratio, placing glass fibers in acid liquor and alkali liquor in sequence for soaking and ultrasonic treatment, and shearing the glass fibers to be less than 1mm for later use after washing; grinding a hydrophobic rock wool plate into slurry by a mechanical grinding method, then adding a mixture of polyvinylpyrrolidone and KH560 with a proper mass ratio of 1:0.6, keeping the temperature and stirring for 5-30min, filtering out nitrogen atmosphere, drying to obtain powder, and sieving with a 20-mesh sieve for later use; and mixing the treated chopped glass fiber and the ground hydrophobic rock wool board powder, and mixing the mixture with water according to the solid-liquid ratio of 1:2-4 to obtain slurry when in use.
2. The quick-drying waterproof plastering mortar of claim 1, wherein: the ultrasonic treatment in the step 1) is 32-35KHz and 250W.
3. The quick-drying type waterproof plastering mortar of claim 1, wherein: the preparation method of the modified ore powder comprises the steps of blending the volcanic rock and the water-soluble amino clay, adding water, grinding for 5-20min, drying in an inert atmosphere, crushing until the mixture is sieved by a 20-mesh sieve to obtain mixed powder, adding an activating agent into the solvent type thermoplastic acrylic resin, stirring and uniformly mixing, slowly adding the mixed powder into the solvent type thermoplastic acrylic resin under the stirring condition of 80-100rpm, continuously stirring for 5-10min after the addition is finished, drying in an inert atmosphere, crushing until the mixture is sieved by a 30-mesh sieve, and thus obtaining the modified ore powder.
4. The quick-drying type waterproof plastering mortar of claim 3, wherein: the grinding water accounts for 40-80% of the total mass of the volcanic rock and the water-soluble amino clay, and the grinding rotation speed is 700-800 rpm.
5. The quick-drying type waterproof plastering mortar of claim 1, wherein: the mass ratio of the glass fiber to the hydrophobic rock wool board in the composite fiber pulp is 1: 0-1.
6. The quick-drying waterproof plastering mortar of claim 5, wherein: the acid solution soaking is performed for 5-10h by using 1M hydrochloric acid solution, the alkali solution soaking is performed for 5-10h by using 1M sodium hydroxide solution, the ultrasonic treatment is performed at 30KHz and 300W at normal temperature, the ultrasonic treatment time is 10-15min per hour, and the operation is performed at equal intervals.
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