CN114685093B - Wall repairing paste and preparation method and application thereof - Google Patents
Wall repairing paste and preparation method and application thereof Download PDFInfo
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- CN114685093B CN114685093B CN202210451392.8A CN202210451392A CN114685093B CN 114685093 B CN114685093 B CN 114685093B CN 202210451392 A CN202210451392 A CN 202210451392A CN 114685093 B CN114685093 B CN 114685093B
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
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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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00267—Materials permeable to vapours or gases
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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
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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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- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a wall repairing paste and a preparation method and application thereof. The invention relates to a wall repairing paste, which comprises the following components: heavy calcium, talcum powder, starch ether, cellulose ether, waterproof emulsion, wood fiber, a nuciferine waterproof agent loaded by a molecular sieve, bentonite and water. The nuciferine waterproof agent loaded by the molecular sieve is used as a main waterproof and breathable material for the wall surface, can prevent moisture from invading, and can smoothly and outwards emit internal moisture, so that the functions of waterproof, permeability resistance and ventilation are achieved. After the waterproof emulsion is matched, the product performance is improved, so that the wall repairing paste can not fall off for a long time in a wet environment, powder is not dropped, and the wall repairing paste has good repairing effect on walls of places such as a toilet, a kitchen and the like. The invention also provides a preparation method and application of the wall repairing paste.
Description
Technical Field
The invention belongs to the technical field of paint, and particularly relates to a wall repairing paste and a preparation method and application thereof.
Background
After the house decoration is used for a certain period of time, the problems of back alkali falling, water leakage yellowing, mildew blackening and the like of the wall surface can be generated, particularly in a bathroom, the problems of mold and bacteria are easy to grow due to large space moisture, the wall surface problem can be more serious, the beauty of the wall surface is extremely influenced, and the living of an owner is also seriously influenced. In addition, the wall surface is used for a long time, stains and scratches are inevitably generated, and nail holes, air conditioning holes or other large holes are generated.
For the problems of wall peeling, stains and the like, the current method is to shovel off the original putty layer, then batch a layer of putty, and then roll the finish paint twice. However, on the one hand, the structural forces due to the putty are generally poor; on the other hand, the water vapor of the cement base layer cannot permeate out or the material cannot prevent alkali, so that the method can not treat the symptoms or root cause, and after a period of time, the wall surface can peel off again or return alkali to drop off.
For nail holes, air-conditioning holes or drilling holes, the current treatment mode is to fill or fill foaming materials by using putty powder as a filler. The putty powder is filled, and because the ventilation area of the material is small, after the moisture volatilizes, cracking or dishing can be generated, so that the putty powder is not attractive, longer drying waiting time is required, and a proprietor needs a few days of repairing time to move the removed furniture home appliance back to the original position. The common wall surface repairing material is mainly applied to a scraping process, so that the material has good leveling property, and when holes are filled, the product is easy to sag and collapse due to good fluidity.
Therefore, a new wall repairing paste needs to be developed, which is not only suitable for repairing wall surface peeling and stains, but also suitable for repairing wall surface holes.
Disclosure of Invention
The present invention aims to solve at least one of the above technical problems in the prior art. Therefore, the invention provides the wall repairing paste which can repair the wall surface problems caused by alkali return falling off, water leakage yellowing, mildew blackening and the like, and has good repairing effect on the wall surface of places such as washrooms, kitchens and the like.
The invention also provides a preparation method of the wall repairing paste.
The invention also provides application in repairing wall holes.
The first aspect of the invention provides a wall repair paste, which comprises the following components: heavy calcium, talcum powder, starch ether, cellulose ether, waterproof emulsion, wood fiber, a nuciferine waterproof agent loaded by a molecular sieve, bentonite and water.
The invention relates to one of the technical schemes of wall repairing paste, which has at least the following beneficial effects:
according to the wall repairing paste, the nuciferine waterproof agent loaded by the molecular sieve is used as a main waterproof and breathable material for the wall surface, so that the invasion of moisture can be prevented, and internal moisture can be smoothly emitted outwards, and the functions of waterproof, permeability resistance and ventilation are achieved. After the waterproof emulsion is matched, the product performance is improved, so that the wall repairing paste can not fall off for a long time in a wet environment, powder is not dropped, and the wall repairing paste has good repairing effect on walls of places such as a toilet, a kitchen and the like.
According to the wall repairing paste, the waterproof emulsion and the methyl potassium silicate component in the molecular sieve loaded nuciferine waterproof agent can effectively inhibit the penetration of alkaline materials at the wall surface with alkali, and the problem of alkali return of wall products is avoided. Through detection, the waterproof wall repairing paste for the wall surface has no foaming, cracking and obvious powder falling phenomenon after 48h of water immersion, and the waterproof wall repairing paste for the wall surface has no water penetration condition after 48h of water immersion by strong alkali under the condition of 0.1mpa and 30min by using a waterproof instrument.
According to the wall repairing paste, the molecular sieve is added, so that the wall repairing paste has the performances of high adsorptivity and high specific surface area, and meanwhile, a large number of hydrophilic hydroxyl groups on the surface of the pore canal can play a role in effectively regulating humidity, so that the drying speed of the wall repairing paste is effectively regulated, and the wall repairing paste is not dried too fast or too slowly. The self moisture can be slowly released in the use process, the drying time is short, the surface drying time is about 5 minutes when the product is used for repairing and scraping, the construction time is shortened, the home appliances of furniture can be conveniently moved in time by the owners, and the daily life of the owners is not delayed. When filling the pit, the molecular sieve can slowly release water molecules in the pit, so that the water in the product can be slowly released, the phenomenon of cracking of the product caused by inconsistent internal and external drying time is avoided, and the molecular sieve has certain pseudoplastic thickening performance.
The wall repairing paste provided by the invention is ready to use and is molded once. The product is environment-friendly and pollution-free, and has no toxic effect on human bodies.
The wall repairing paste comprises the following components:
the heavy calcium serves as a filler and plays a role in filling.
The talcum powder is used as filler, has fibrous structure and provides certain water resistance.
The starch ether has the function of increasing the hand feeling of the scraped material.
The cellulose ether has the function of water retention and thickening.
The function of the water-repellent emulsion is to provide cohesive forces while providing a certain water resistance.
The function of the wood fibers is to provide water retention, crack resistance and toughness.
The molecular sieve loaded nuciferine waterproof agent has the functions of enabling the wall repairing paste to have high adsorptivity and high specific surface area, and meanwhile, a large number of hydrophilic hydroxyl groups are arranged on the surface of a pore canal of the molecular sieve, so that the humidity is effectively regulated, the drying speed of the wall repairing paste is effectively regulated, and the wall repairing paste is not too fast or too slow to dry.
The bentonite has the function of adjusting the construction handfeel, so that the construction is smoother and the viscosity is increased.
Water is the diluent.
According to some embodiments of the invention, the composition comprises the following components in parts by weight:
heavy calcium: 50 to 80 parts of the components in parts by weight,
talc powder: 15 to 40 parts of the components in parts by weight,
starch ether: 0.1 to 0.4 part of the total weight of the composition,
cellulose ether: 0.3 to 0.5 part of the total weight of the composition,
waterproof emulsion: 5 to 8 parts of the components,
wood fiber: 0.5 to 1 part of the total weight of the composition,
molecular sieve loaded nuciferine waterproof agent: 2 to 8 parts of the components,
bentonite: 0.5 to 1 part of the total weight of the composition,
water: 20-50 parts.
According to some embodiments of the invention, the whiteness of the heavy calcium carbonate is not less than 90.
According to some embodiments of the invention, the heavy calcium is a mixture of heavy calcium with fineness of 200 mesh and heavy calcium with fineness of 400 mesh.
The heavy calcium is the mixture of heavy calcium with fineness of 200 meshes and heavy calcium with fineness of 400 meshes, so that the water in the matched material can uniformly penetrate into the air through a filler gap in the drying process, and the dried surface is smoother.
The mass ratio of the heavy calcium with the fineness of 200 meshes to the heavy calcium with the fineness of 400 meshes is 1:2-9.
The mass ratio of the heavy calcium with the fineness of 200 meshes to the heavy calcium with the fineness of 400 meshes is 1:9.
According to some embodiments of the invention, the talc has a whiteness of 90 or more.
According to some embodiments of the invention, the talc is a mixture of 200 mesh talc and 400 mesh talc.
The talcum powder is the mixture of 200-mesh talcum powder and 400-mesh talcum powder, so that the moisture of the matched material can be uniformly permeated into the air through the filler gap in the drying process, and the dried surface can be smoother.
The mass ratio of the talcum powder with the fineness of 200 meshes to the talcum powder with the fineness of 400 meshes is 1:2-9.
The mass ratio of the talcum powder with the fineness of 200 meshes to the talcum powder with the fineness of 400 meshes is 1:9.
According to some embodiments of the invention, the cellulose ether is at least one of hydroxyethyl cellulose ether, hydroxypropyl methyl cellulose ether, and methyl cellulose ether.
According to some embodiments of the invention, the cellulose ether is hydroxypropyl methyl cellulose ether.
According to some embodiments of the invention, the hydroxypropyl methylcellulose ether is M70 hydroxypropyl methylcellulose ether of acetenobel.
According to some embodiments of the invention, the water-repellent emulsion is at least one of a pure acrylic polymer, a styrene-butadiene polymer, and a PVA polymer.
According to some embodiments of the invention, the water-repellent emulsion is an acrylic polymer.
According to some embodiments of the invention, the wood fibers are 80 mesh white wood fibers.
According to some embodiments of the invention, the fineness of the molecular sieve loaded nuciferine waterproof agent is more than or equal to 200 meshes.
The fineness of the molecular sieve loaded nuciferine waterproof agent is more than or equal to 200 meshes, so that the product has better hand feeling after being scraped and dried.
According to some embodiments of the invention, the molecular sieve-loaded nuciferine waterproof agent is white in color.
According to some embodiments of the present invention, the preparation method of the molecular sieve loaded nuciferine waterproof agent mainly comprises two steps of nuciferine waterproof agent preparation and molecular sieve loaded nuciferine waterproof agent preparation.
According to some embodiments of the invention, the nuciferine waterproof agent is prepared by the following steps:
(1) Taking 1.8g of methyl silicic acid and 8ml of absolute ethyl alcohol, uniformly mixing, and reacting for 30min in an indoor environment;
(2) Adding 100ml of deionized water into a reaction kettle, and heating to 50 ℃;
(3) Adding 3g of phyllin and 3.6g of potassium hydroxide into a reaction kettle, and continuously heating to 100 ℃;
(4) Adding the methyl silicic acid solution reacted in the step (1) into a reaction kettle, and reacting for 60min at a constant temperature;
(5) Pouring into a sedimentation tank for cooling and sedimentation, and obtaining yellowish sol for standby, namely the solution A.
According to some embodiments of the invention, the preparation method of the molecular sieve-loaded nuciferine waterproof agent comprises the following steps: after the molecular sieve is activated, the molecular sieve is immersed in nuciferine waterproof agent sol, solid-liquid separation is carried out, and a solid product is dried.
The method for activating the molecular sieve comprises the following steps:
the molecular sieve is heat treated for 2 hours at the temperature of 100 ℃, and then activated for 2 hours at the temperature of 400 ℃ by a resistance furnace.
The molecular sieve activation aims to fully bake organic impurities and moisture in the porous molecular sieve, remove adsorbed impurities and widen the pore channels of the molecular sieve.
According to some embodiments of the invention, the molecular sieve comprises at least one of a carbon molecular sieve and a ZMS-5 molecular sieve.
Compared with a nuciferine waterproof agent loaded by a carbon molecular sieve and a nuciferine waterproof agent loaded by a ZSM-5 molecular sieve, the performance difference in use is that the nuciferine waterproof agent loaded by the carbon molecular sieve can influence whiteness of a finished product.
According to some embodiments of the invention, the preparation method of the molecular sieve-loaded nuciferine waterproof agent specifically comprises the following steps:
(1) Placing a certain amount of 270-340 mesh molecular sieve into an oven, performing heat treatment for 2 hours at 100 ℃, and activating for 2 hours at 400 ℃ by using a resistance furnace, so that organic impurities and moisture in the porous molecular sieve are sufficiently roasted, adsorbed impurities are removed, and the pore channels of the molecular sieve are widened;
(2) Weighing 30ml of absolute ethyl alcohol, 20ml of acetic acid and 8ml of distilled water, placing in a beaker, uniformly stirring, placing in a separating funnel, and marking as a solution B;
(3) Stirring with a magnetic stirrer at a constant temperature of 30 ℃, dropwise adding a solution B into the solution A, and sealing with a sealed preservative film in the stirring process until a uniform yellowish sol C is formed;
(4) Weighing a certain amount of completely activated molecular sieve, adding the completely activated molecular sieve into the nuciferine waterproof agent sol C, ensuring that the sol can completely submerge the molecular sieve, and performing ultrasonic vibration dispersion for 40min to ensure that the molecular sieve and the nuciferine waterproof agent sol react and overlap;
(5) Soaking in a vacuum drier for 2h under vacuum negative pressure to prevent bubbles from generating on the surface of the molecular sieve, standing for 12h, filtering out solution and partial impurities, and drying the molecular sieve in a drying oven at 100deg.C for 3 h;
(6) The prepared molecular sieve-loaded nuciferine waterproof agent is ground to obtain the molecular sieve-loaded nuciferine waterproof agent.
(7) According to actual needs, repeating the steps (1) to (6) for different times, preparing the nuciferine waterproof agent based on molecular sieve loading for different times, and improving the waterproof and air permeability performances of the material.
The nuciferine waterproof agent is prepared by taking stem and leaf (lotus leaf) extracts of natural nano-structure plant water lily as raw materials, containing nuciferine components, taking high polymer potassium methyl silicate with osmotic crystallization performance as a carrier, and concentrating the nuciferine waterproof agent through a special process. The cage of the molecular sieve is a polyhedron in three-dimensional space and is a main structural unit for forming the molecular sieve. When the nuciferine waterproof agent sol flows, some molecules in the fluid collide with the surface of the adsorbent due to irregular movement, and molecular concentration is generated on the surface, so that the nuciferine waterproof agent in the fluid is reduced, and the aim of adsorbing load is fulfilled.
In addition, the zeolite molecular sieve has stronger polarity in the crystal cavity, so that the zeolite molecular sieve can have strong action with the lone electron pair on the nitrogen atom in nuciferine molecules, thereby generating strong adsorption. The compensating ion outside the zeolite molecular sieve skeleton is generally alkali metal or alkaline earth metal, and the nuciferine waterproof agent sol contains methyl potassium silicate component, so that the metal ion zeolite molecular sieve is easily ion-exchanged in aqueous solution of metal potassium ion, and the other end of the methyl potassium silicate contains hydrophobic methyl group, so that the material can prevent moisture from entering, and can make internal moisture uninhibited and outwards spread, thereby achieving the functions of water resistance, permeability resistance and ventilation. The molecular sieve has extremely large specific surface area, and meanwhile, a large number of hydrophilic hydroxyl groups on the surfaces of the pore channels can effectively regulate humidity, so that the product is not dried too fast or too slowly, the moisture in the product and the surface moisture are volatilized in a synergic manner, the molecular sieve has certain pseudoplastic thickening performance, and in a static state, the molecular sieve can have viscosity to enable the product to have plasticity and not flow in pit filling, the pit depth can reach 10-15 mm, the product is not cracked, and the molecular sieve has the advantages of no expansion and no collapse of the pit surface.
In a second aspect, the present invention provides a method of preparing a wall repair paste comprising the steps of:
s1: adding the cellulose ether into water, dispersing, and sequentially adding the bentonite, the heavy calcium carbonate, the talcum powder, the starch ether and the wood fiber;
s2: and (2) adding the waterproof emulsion and the nuciferine waterproof agent loaded by the molecular sieve into the mixture obtained in the step (S1), and uniformly mixing.
The invention relates to a technical scheme in a preparation method of wall repair paste, which has at least the following beneficial effects:
the preparation method of the wall repair paste can be completed without expensive equipment and complex process, has simple preparation process and easy control, and is suitable for large-scale production.
According to some embodiments of the present invention, the preparation method of the wall repair paste specifically comprises the following steps:
s1: weighing water according to the weight ratio, adding cellulose ether into the water, starting a dispersing machine to adjust the stirring rotation speed to 500r/min and stirring for 5min, adjusting the stirring rotation speed to 1000r/min, sequentially weighing bentonite, heavy calcium, talcum powder, starch ether and wood fiber according to the weight ratio, and adding into the dispersing machine and stirring for 20min;
s2: and (3) regulating the rotating speed of a dispersing machine to 500r/min, weighing the waterproof emulsion and the nuciferine waterproof agent loaded by the molecular sieve according to the weight ratio, adding, and stirring for 8min to obtain the waterproof agent.
Because bentonite is not easy to disperse, the bentonite can be added first to avoid agglomeration.
In a third aspect the invention provides the use of a wall repair paste for repairing a wall hole.
The invention relates to a technical scheme of wall repairing paste in the application of repairing wall holes, which has at least the following beneficial effects:
according to the wall repairing paste, the molecular sieve is added, so that the wall repairing paste has the performances of high adsorptivity and high specific surface area, and meanwhile, a large number of hydrophilic hydroxyl groups on the surface of the pore canal can play a role in effectively regulating humidity, so that the drying speed of the wall repairing paste is effectively regulated, and the wall repairing paste is not dried too fast or too slowly. The self moisture can be slowly released in the use process, the drying time is short, the surface drying time is about 5 minutes when the product is used for repairing and scraping, the construction time is shortened, the home appliances of furniture can be conveniently moved in time by the owners, and the daily life of the owners is not delayed. When filling the pits, the wall repairing paste can slowly release water molecules in the holes, so that the water in the product can be slowly released, the phenomenon of cracking of the product caused by inconsistent internal and external drying time is avoided, and the molecular sieve has certain pseudoplastic thickening performance.
According to some embodiments of the invention, the wall holes include nail holes, air conditioning holes, and drilled holes.
According to some embodiments of the invention, the wall hole has a pore size of 8mm to 20mm.
According to some embodiments of the invention, the wall hole has a diameter of 10mm to 20mm.
According to some embodiments of the invention, the wall hole has a pore size of about 10mm.
According to some embodiments of the invention, the depth of the wall hole is 10mm to 15mm.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the embodiments, but the present invention is not limited to these embodiments.
In some embodiments of the present invention, the present invention provides a wall repair paste, comprising: heavy calcium, talcum powder, starch ether, cellulose ether, waterproof emulsion, wood fiber, a nuciferine waterproof agent loaded by a molecular sieve, bentonite and water.
It can be understood that the wall repairing paste takes the nuciferine waterproof agent loaded by the molecular sieve as a waterproof and breathable main material of the wall surface, can prevent moisture from invading, and can smoothly and outwards emit internal moisture, thereby achieving the functions of waterproof, impervious and breathable. After the waterproof emulsion is matched, the product performance is improved, so that the wall repairing paste can not fall off for a long time in a wet environment, powder is not dropped, and the wall repairing paste has good repairing effect on walls of places such as a toilet, a kitchen and the like.
It can be further understood that the wall repairing paste can effectively inhibit the penetration of alkaline materials by using the waterproof emulsion and the methyl potassium silicate component in the molecular sieve loaded nuciferine waterproof agent at the wall surface with alkali, and the problem of alkali reversion of wall products can not be caused. Through detection, the waterproof wall repairing paste for the wall surface has no foaming, cracking and obvious powder falling phenomenon after 48h of water immersion, and the waterproof wall repairing paste for the wall surface has no water penetration condition after 48h of water immersion by strong alkali under the condition of 0.1mpa and 30min by using a waterproof instrument.
It can be further understood that the wall repairing paste has the properties of high adsorptivity and high specific surface area by adding the molecular sieve, and meanwhile, a large number of hydrophilic hydroxyl groups on the surface of the pore canal can play a role in effectively regulating humidity, so that the drying speed of the wall repairing paste is effectively regulated, and the wall repairing paste is not dried too fast or too slow. The self moisture can be slowly released in the use process, the drying time is short, the surface drying time is about 5 minutes when the product is used for repairing and scraping, the construction time is shortened, the home appliances of furniture can be conveniently moved in time by the owners, and the daily life of the owners is not delayed. When filling the pit, the molecular sieve can slowly release water molecules in the pit, so that the water in the product can be slowly released, the phenomenon of cracking of the product caused by inconsistent internal and external drying time is avoided, and the molecular sieve has certain pseudoplastic thickening performance.
During construction, the wall repairing paste is used immediately after being opened and molded once. The product is environment-friendly and pollution-free, and has no toxic effect on human bodies.
It can be understood that in the wall repairing paste of the invention:
the heavy calcium serves as a filler and plays a role in filling.
The talcum powder is used as filler, has fibrous structure and provides certain water resistance.
The starch ether has the function of increasing the hand feeling of the scraped material.
The cellulose ether has the function of water retention and thickening.
The function of the water-repellent emulsion is to provide cohesive forces while providing a certain water resistance.
The function of the wood fibers is to provide water retention, crack resistance and toughness.
The molecular sieve loaded nuciferine waterproof agent has the functions of enabling the wall repairing paste to have high adsorptivity and high specific surface area, and meanwhile, a large number of hydrophilic hydroxyl groups are arranged on the surface of a pore canal of the molecular sieve, so that the humidity is effectively regulated, the drying speed of the wall repairing paste is effectively regulated, and the wall repairing paste is not too fast or too slow to dry.
The bentonite has the function of adjusting the construction handfeel, so that the construction is smoother and the viscosity is increased.
Water is the diluent.
In some embodiments of the invention, the wall repair paste comprises the following components in parts by weight:
heavy calcium: 50 to 80 parts of the components in parts by weight,
talc powder: 15 to 40 parts of the components in parts by weight,
starch ether: 0.1 to 0.4 part of the total weight of the composition,
cellulose ether: 0.3 to 0.5 part of the total weight of the composition,
waterproof emulsion: 5 to 8 parts of the components,
wood fiber: 0.5 to 1 part of the total weight of the composition,
molecular sieve loaded nuciferine waterproof agent: 2 to 8 parts of the components,
bentonite: 0.5 to 1 part of the total weight of the composition,
water: 20-50 parts.
In some embodiments of the invention, the whiteness of heavy calcium is greater than or equal to 90.
In some embodiments of the invention, the heavy calcium is a mixture of heavy calcium having a fineness of 200 mesh and heavy calcium having a fineness of 400 mesh.
It can be understood that the heavy calcium is the mixture of heavy calcium with fineness of 200 meshes and heavy calcium with fineness of 400 meshes, so that the water in the matched materials can uniformly penetrate into the air through the gaps of the filler in the drying process, and the dried surface is smoother.
Specifically, the mass ratio of the heavy calcium with the fineness of 200 meshes to the heavy calcium with the fineness of 400 meshes is 1:2-9.
More specifically, the mass ratio of the coarse whiting with the fineness of 200 meshes to the coarse whiting with the fineness of 400 meshes is 1:9.
In some embodiments of the invention, the talc has a whiteness of 90 or more.
In some embodiments of the invention, the talc is a mixture of 200 mesh talc and 400 mesh talc.
It can be understood that the talcum powder is the mixture of 200-mesh talcum powder and 400-mesh talcum powder, so that the moisture of the matched material can be uniformly permeated into the air through the filler gaps in the drying process, and the dried surface can be smoother.
Specifically, the mass ratio of the talcum powder with the fineness of 200 meshes to the talcum powder with the fineness of 400 meshes is 1:2-9.
The mass ratio of the talcum powder with the fineness of 200 meshes to the talcum powder with the fineness of 400 meshes is 1:9.
Specifically, in some embodiments of the present invention, the cellulose ether is at least one of hydroxyethyl cellulose ether, hydroxypropyl methyl cellulose ether, and methyl cellulose ether.
In some embodiments of the invention, the cellulose ether is hydroxypropyl methyl cellulose ether.
In some embodiments of the invention, the hydroxypropyl methylcellulose ether is an M70 hydroxypropyl methylcellulose ether of acetenobel.
In some embodiments of the invention, the water-repellent emulsion is at least one of a pure acrylic polymer, a styrene-butadiene polymer, and a PVA polymer.
In some embodiments of the invention, the water-repellent emulsion is an acrylic polymer.
In some embodiments of the invention, the wood fibers are 80 mesh white wood fibers.
In some embodiments of the invention, the fineness of the molecular sieve-loaded nuciferine waterproof agent is greater than or equal to 200 meshes.
The fineness of the molecular sieve loaded nuciferine waterproof agent is more than or equal to 200 meshes, so that the product has better hand feeling after being scraped and dried.
In some embodiments of the invention, the molecular sieve-loaded nuciferine waterproofing agent is white in color.
In some embodiments of the present invention, the preparation method of the molecular sieve loaded nuciferine waterproof agent mainly comprises two steps of preparation of the nuciferine waterproof agent and preparation of the molecular sieve loaded nuciferine waterproof agent.
In some embodiments of the invention, the nuciferine water-proofing agent is prepared by the following steps:
(1) Taking 1.8g of methyl silicic acid and 8ml of absolute ethyl alcohol, uniformly mixing, and reacting for 30min in an indoor environment;
(2) Adding 100ml of deionized water into a reaction kettle, and heating to 50 ℃;
(3) Adding 3g of phyllin and 3.6g of potassium hydroxide into a reaction kettle, and continuously heating to 100 ℃;
(4) Adding the methyl silicic acid solution reacted in the step (1) into a reaction kettle, and reacting for 60min at a constant temperature;
(5) Pouring into a sedimentation tank for cooling and sedimentation, and obtaining yellowish sol for standby, namely the solution A.
In some embodiments of the invention, the preparation method of the molecular sieve-loaded nuciferine waterproof agent comprises the following steps: after the molecular sieve is activated, the molecular sieve is immersed in nuciferine waterproof agent sol, solid-liquid separation is carried out, and a solid product is dried.
The method for activating the molecular sieve comprises the following steps:
the molecular sieve is heat treated for 2 hours at the temperature of 100 ℃, and then activated for 2 hours at the temperature of 400 ℃ by a resistance furnace.
The molecular sieve activation aims to fully bake organic impurities and moisture in the porous molecular sieve, remove adsorbed impurities and widen the pore channels of the molecular sieve.
In some embodiments of the invention, the molecular sieve comprises at least one of a carbon molecular sieve and a ZMS-5 molecular sieve.
In some embodiments of the invention, the preparation method of the molecular sieve-loaded nuciferine waterproof agent specifically comprises the following steps:
(1) Placing a certain amount of 270-340 mesh molecular sieve into an oven, performing heat treatment for 2 hours at 100 ℃, and activating for 2 hours at 400 ℃ by using a resistance furnace, so that organic impurities and moisture in the porous molecular sieve are sufficiently roasted, adsorbed impurities are removed, and the pore channels of the molecular sieve are widened;
(2) Weighing 30ml of absolute ethyl alcohol, 20ml of acetic acid and 8ml of distilled water, placing in a beaker, uniformly stirring, placing in a separating funnel, and marking as a solution B;
(3) Stirring with a magnetic stirrer at a constant temperature of 30 ℃, dropwise adding a solution B into the solution A, and sealing with a sealed preservative film in the stirring process until a uniform yellowish sol C is formed;
(4) Weighing a certain amount of completely activated molecular sieve, adding the completely activated molecular sieve into the nuciferine waterproof agent sol C, ensuring that the sol can completely submerge the molecular sieve, and performing ultrasonic vibration dispersion for 40min to ensure that the molecular sieve and the nuciferine waterproof agent sol react and overlap;
(5) Soaking in a vacuum drier for 2h under vacuum negative pressure to prevent bubbles from generating on the surface of the molecular sieve, standing for 12h, filtering out solution and partial impurities, and drying the molecular sieve in a drying oven at 100deg.C for 3 h;
(6) The prepared molecular sieve-loaded nuciferine waterproof agent is ground to obtain the molecular sieve-loaded nuciferine waterproof agent.
(7) According to actual needs, repeating the steps (1) to (6) for different times, preparing the nuciferine waterproof agent based on molecular sieve loading for different times, and improving the waterproof and air permeability performances of the material.
It can be understood that the nuciferine waterproof agent is a binary synergetic nuciferine waterproof agent which is prepared by taking stem and leaf (lotus leaf) extracts of natural nano-structure plant water lily as raw materials, containing nuciferine components, taking high molecular polymer potassium methyl silicate with osmotic crystallization performance as a carrier, and concentrating by a special process. The cage of the molecular sieve is a polyhedron in three-dimensional space and is a main structural unit for forming the molecular sieve. When the nuciferine waterproof agent sol flows, some molecules in the fluid collide with the surface of the adsorbent due to irregular movement, and molecular concentration is generated on the surface, so that the nuciferine waterproof agent in the fluid is reduced, and the aim of adsorbing load is fulfilled.
In addition, it can be understood that the zeolite molecular sieve has stronger polarity in the crystal cavities, and can have strong action with the lone electron pair on the nitrogen atom in nuciferine molecules, thereby generating strong adsorption. The compensating ion outside the zeolite molecular sieve skeleton is generally alkali metal or alkaline earth metal, and the nuciferine waterproof agent sol contains methyl potassium silicate component, so that the metal ion zeolite molecular sieve is easily ion-exchanged in aqueous solution of metal potassium ion, and the other end of the methyl potassium silicate contains hydrophobic methyl group, so that the material can prevent moisture from entering, and can make internal moisture uninhibited and outwards spread, thereby achieving the functions of water resistance, permeability resistance and ventilation. The molecular sieve has extremely large specific surface area, and meanwhile, a large number of hydrophilic hydroxyl groups on the surfaces of the pore channels can effectively regulate humidity, so that the product is not dried too fast or too slowly, the moisture in the product and the surface moisture are volatilized in a synergic manner, the molecular sieve has certain pseudoplastic thickening performance, and in a static state, the molecular sieve can have viscosity to enable the product to have plasticity and not flow in pit filling, the pit depth can reach 10-15 mm, the product is not cracked, and the molecular sieve has the advantages of no expansion and no collapse of the pit surface.
In some embodiments of the present invention, the present invention also provides a method of preparing a wall repair paste, comprising the steps of:
s1: adding the cellulose ether into water, dispersing, and sequentially adding the bentonite, the heavy calcium carbonate, the talcum powder, the starch ether and the wood fiber;
s2: and (2) adding the waterproof emulsion and the nuciferine waterproof agent loaded by the molecular sieve into the mixture obtained in the step (S1), and uniformly mixing.
The invention relates to a technical scheme in a preparation method of wall repair paste, which has at least the following beneficial effects:
the preparation method of the wall repair paste can be completed without expensive equipment and complex process, has simple preparation process and easy control, and is suitable for large-scale production.
In some embodiments of the present invention, a method for preparing a wall repair paste specifically includes the following steps:
s1: weighing water according to the weight ratio, adding cellulose ether into the water, starting a dispersing machine to adjust the stirring rotation speed to 500r/min and stirring for 5min, adjusting the stirring rotation speed to 1000r/min, sequentially weighing bentonite, heavy calcium, talcum powder, starch ether and wood fiber according to the weight ratio, and adding into the dispersing machine and stirring for 20min;
s2: and (3) regulating the rotating speed of a dispersing machine to 500r/min, weighing the waterproof emulsion and the nuciferine waterproof agent loaded by the molecular sieve according to the weight ratio, adding, and stirring for 8min to obtain the waterproof agent.
In some embodiments of the invention, the invention also provides the use of the wall repair paste in repairing a wall hole.
It can be understood that the wall repairing paste has the properties of high adsorptivity and high specific surface area by adding the molecular sieve, and simultaneously, a large number of hydrophilic hydroxyl groups on the surface of the pore canal can play a role in effectively regulating humidity, so that the drying speed of the wall repairing paste is effectively regulated, and the wall repairing paste is not too fast or too slow to dry. The self moisture can be slowly released in the use process, the drying time is short, the surface drying time is about 5 minutes when the product is used for repairing and scraping, the construction time is shortened, the home appliances of furniture can be conveniently moved in time by the owners, and the daily life of the owners is not delayed. When filling the pits, the wall repairing paste can slowly release water molecules in the holes, so that the water in the product can be slowly released, the phenomenon of cracking of the product caused by inconsistent internal and external drying time is avoided, and the molecular sieve has certain pseudoplastic thickening performance.
Specifically, the wall holes include nail holes, air conditioning holes, and drilled holes.
Specifically, the aperture of the wall hole is 8mm to 20mm, may be 10mm to 20mm, and may be about 10mm.
The depth of the wall hole is 10 mm-15 mm.
The technical scheme of the invention is further understood by combining the specific embodiments.
In the following examples and comparative examples:
the heavy calcium is purchased from Shanggao county Hua silicon mining Co., ltd, and specifically comprises heavy calcium with the whiteness of more than 95 meshes of 400 and heavy calcium with the whiteness of more than 90 meshes of 200, and the mass ratio is 9:1.
The talcum powder is purchased from Shenzhen sea Yang powder science and technology Co., ltd, and specifically comprises 400-mesh talcum powder with whiteness of more than 90 and 200-mesh talcum powder with whiteness of more than 90, and the mass ratio is 9:1.
Starch ethers were purchased from the expensive cellulose company, inc., jinzhou, as white powders.
Cellulose ethers were purchased from Changsha Hunan coated building materials Co.
The waterproof emulsion is purchased from Baderfu industry Co., ltd in Shunde district of Buddha, and is specifically RS-300V zero-ammonia flexible waterproof emulsion.
Wood fiber was purchased from gallery morning and evening chemical construction materials, inc.
Carbon molecular sieves were purchased from Guangde Shibo synthetic carbon materials Co.
ZSM-5 molecular sieves were purchased from Zhuo environmental protection technology (Dalian Co., ltd.).
Bentonite is available from Nanchang Dongdi chemical Co., ltd, and is specifically sodium bentonite.
Example 1
The molecular sieve-loaded nuciferine waterproof agent is prepared in the embodiment.
The molecular sieve loaded nuciferine waterproof agent is synthesized by two steps of preparation of the nuciferine waterproof agent and preparation of the molecular sieve loaded nuciferine waterproof agent.
The preparation method of the lotus leaf essence waterproof agent comprises the following steps:
taking 1.8g of methyl silicic acid and 8ml of absolute ethyl alcohol, uniformly mixing, and reacting for 30min in an indoor environment;
adding 100ml of deionized water into a reaction kettle, and heating to 50 ℃;
adding 3g of phyllin and 3.6g of potassium hydroxide, and continuously heating to 100 ℃;
adding the reacted methyl silicic acid solution into a reaction kettle, and carrying out heat preservation reaction for 60min.
Pouring into a sedimentation tank for cooling and sedimentation, and recording the pale yellow sol obtained by sedimentation as solution A for standby.
The preparation method of the molecular sieve loaded nuciferine waterproof agent comprises the following steps:
(1) Placing a certain amount of 270 mesh molecular sieve in an oven, performing heat treatment at 100deg.C for 2h, activating with a resistance furnace at 400deg.C for 2h, fully roasting organic impurities and water in the porous molecular sieve, removing adsorbed impurities, and widening molecular sieve pore channels;
(2) Weighing 30ml of absolute ethyl alcohol, 20ml of acetic acid and 8ml of distilled water, placing in a beaker, uniformly stirring, placing in a separating funnel, and marking as a solution B;
(3) Stirring with a magnetic stirrer at a constant temperature of 30 ℃, dropwise adding a solution B into the solution A, and sealing with a sealed preservative film in the stirring process until a uniform yellowish sol C is formed;
(4) Weighing 20g of completely activated molecular sieve, adding the completely activated molecular sieve into the nuciferine waterproof agent sol C, ensuring that the sol can completely submerge the molecular sieve, and performing ultrasonic vibration dispersion for 40min to ensure that the carbon molecular sieve and the nuciferine waterproof agent sol react and overlap;
(5) Soaking in a vacuum drier for 2h under vacuum negative pressure to prevent bubbles from generating on the surface of the molecular sieve, standing for 12h, filtering out solution and partial impurities, and drying the carbon molecular sieve in a drying oven at 100deg.C for 3 h;
(6) The prepared molecular sieve-loaded nuciferine waterproof agent is ground to obtain the molecular sieve-loaded nuciferine waterproof agent, and the particle size of the molecular sieve-loaded nuciferine waterproof agent is larger than 200 meshes.
(7) And (3) repeating the steps (1) to (6) for 2 times according to actual needs, and preparing the nuciferine waterproof agent based on different times of molecular sieve loading, so that the waterproof and air permeability of the material is improved.
Example 2
The molecular sieve loaded nuciferine waterproof agent prepared in the embodiment 1 is adopted, and the embodiment prepares the wall repairing paste which specifically comprises the following components in parts by weight:
heavy calcium: 71 parts of a powder of a mixture of components,
talc powder: 20 parts of a mixture of two or more components,
starch ether: 0.15 part of the total weight of the composition,
cellulose ether: 0.35 part of the total weight of the mixture,
waterproof emulsion: 5 parts of the components in parts by weight,
wood fiber: 0.5 part of the total weight of the mixture,
molecular sieve loaded nuciferine waterproof agent: 5 parts of the components in parts by weight,
bentonite: 0.5 part of the total weight of the mixture,
water: 33 parts.
Wherein the molecular sieve in the molecular sieve loaded nuciferine waterproof agent is a carbon molecular sieve.
The preparation method comprises the following steps:
weighing water according to the weight ratio, adding cellulose ether into the water, starting a dispersing machine to adjust the stirring rotation speed to 500r/min and stirring for 5min, adjusting the stirring rotation speed to 1000r/min, weighing bentonite, heavy calcium, talcum powder, starch ether and wood fiber according to the weight ratio in sequence, and adding into the dispersing machine and stirring for 20min.
And (3) regulating the rotating speed of a dispersing machine to 500r/min, weighing the waterproof emulsion and the nuciferine waterproof agent loaded by the molecular sieve according to the weight ratio, adding the waterproof emulsion and the nuciferine waterproof agent, and stirring for 8min to obtain the wall repairing paste.
Example 3
The molecular sieve loaded nuciferine waterproof agent prepared in the embodiment 1 is adopted, and the embodiment prepares the wall repairing paste which specifically comprises the following components in parts by weight:
heavy calcium: 71 parts of a powder of a mixture of components,
talc powder: 20 parts of a mixture of two or more components,
starch ether: 0.15 part of the total weight of the composition,
cellulose ether: 0.35 part of the total weight of the mixture,
waterproof emulsion: 5 parts of the components in parts by weight,
wood fiber: 0.5 part of the total weight of the mixture,
molecular sieve loaded nuciferine waterproof agent: 5 parts of the components in parts by weight,
bentonite: 0.5 part of the total weight of the mixture,
water: 33 parts.
Wherein the molecular sieve in the molecular sieve loaded nuciferine waterproof agent is a ZSM-5 molecular sieve.
The preparation method comprises the following steps:
weighing water according to the weight ratio, adding cellulose ether into the water, starting a dispersing machine to adjust the stirring rotation speed to 500r/min and stirring for 5min, adjusting the stirring rotation speed to 1000r/min, weighing bentonite, heavy calcium, talcum powder, starch ether and wood fiber according to the weight ratio in sequence, and adding into the dispersing machine and stirring for 20min.
And (3) regulating the rotating speed of a dispersing machine to 500r/min, weighing the waterproof emulsion and the nuciferine waterproof agent loaded by the molecular sieve according to the weight ratio, adding the waterproof emulsion and the nuciferine waterproof agent, and stirring for 8min to obtain the wall repairing paste.
Comparative example 1
The nuciferine waterproof agent prepared in the embodiment 1 is adopted, and the wall repairing paste prepared in the embodiment specifically comprises the following components in parts by weight:
heavy calcium: 71 parts of a powder of a mixture of components,
talc powder: 20 parts of a mixture of two or more components,
starch ether: 0.15 part of the total weight of the composition,
cellulose ether: 0.35 part of the total weight of the mixture,
waterproof emulsion: 5 parts of the components in parts by weight,
wood fiber: 0.5 part of the total weight of the mixture,
nuciferine waterproof agent: 5 parts of the components in parts by weight,
bentonite: 0.5 part of the total weight of the mixture,
water: 33 parts.
The preparation method comprises the following steps:
weighing water according to the weight ratio, adding cellulose ether into the water, starting a dispersing machine to adjust the stirring rotation speed to 500r/min and stirring for 5min, adjusting the stirring rotation speed to 1000r/min, weighing bentonite, heavy calcium, talcum powder, starch ether and wood fiber according to the weight ratio in sequence, and adding into the dispersing machine and stirring for 20min.
And (3) regulating the rotating speed of a dispersing machine to 500r/min, weighing the waterproof emulsion and the nuciferine waterproof agent according to the weight ratio, adding the waterproof agent, and stirring for 8min to obtain the wall repairing paste.
Comparative example 2
The molecular sieve loaded nuciferine waterproof agent prepared in the embodiment 1 is adopted, and the embodiment prepares the wall repairing paste which specifically comprises the following components in parts by weight:
heavy calcium: 75 parts of a mixture of two or more components,
talc powder: 16 parts of a mixture of two or more components,
starch ether: 0.3 part of the total weight of the mixture,
cellulose ether: 0.5 part of the total weight of the mixture,
waterproof emulsion: 3 parts of the components in parts by weight,
wood fiber: 0.7 part of the total weight of the mixture,
molecular sieve loaded nuciferine waterproof agent: 3.5 parts of the components in parts by weight,
bentonite: 1 part of the total weight of the mixture,
water: 33 parts.
Wherein the molecular sieve in the molecular sieve loaded nuciferine waterproof agent is a ZSM-5 molecular sieve.
The preparation method comprises the following steps:
weighing water according to the weight ratio, adding cellulose ether into the water, starting a dispersing machine to adjust the stirring rotation speed to 500r/min and stirring for 5min, adjusting the stirring rotation speed to 1000r/min, weighing bentonite, heavy calcium, talcum powder, starch ether and wood fiber according to the weight ratio in sequence, and adding into the dispersing machine and stirring for 20min.
And (3) regulating the rotating speed of a dispersing machine to 500r/min, weighing the waterproof emulsion and the nuciferine waterproof agent loaded by the molecular sieve according to the weight ratio, adding the waterproof emulsion and the nuciferine waterproof agent, and stirring for 8min to obtain the wall repairing paste.
Test case
The wall repair pastes prepared in examples 2 to 5 were tested, and a commercially available paste was used as a control. The results are shown in Table 1.
In the test of Table 1, the standards of the drying time, the grindability and the water resistance are JG/T298-2010 putty for building indoor use.
The standard of the alkali resistance detection is JC/T2177-2013 Diatom ooze decorative wall material.
TABLE 1
In the detection, the standard of the detection basis of the drying time, the grindability and the water resistance is JG/T298-2010 putty for building indoor use.
The standard of the alkali resistance detection is JC/T2177-2013 Diatom ooze decorative wall material.
In the product of comparative example 1, since the nuciferine water repellent is used, humidity and drying speed were not adjusted by loading nuciferine water repellent through a molecular sieve, so 10mm pits had cracks and collapsed.
In the product of comparative example 2, the structural force of the product is poor due to insufficient addition amount of the waterproof emulsion, so that the 48-hour water resistance test is not qualified.
Commercially available repairing paste products usually generate sagging and collapse when filling holes, so that the effect of filling the holes cannot be achieved.
The present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (9)
1. A wall repairing paste is characterized by comprising the components of heavy calcium, talcum powder, starch ether, cellulose ether, waterproof emulsion, wood fiber, a nuciferine waterproof agent loaded by a molecular sieve, bentonite and water;
the preparation method of the molecular sieve-loaded nuciferine waterproof agent comprises the following steps: after the molecular sieve is activated, the molecular sieve is immersed in nuciferine waterproof agent sol, solid-liquid separation is carried out, and a solid product is dried;
the preparation method of the nuciferine waterproof agent comprises the following steps: (1) Taking 1.8g of methyl silicic acid and 8mL of absolute ethyl alcohol, uniformly mixing, and reacting for 30min in an indoor environment; (2) Adding 100mL of deionized water into a reaction kettle, and heating to 50 ℃; (3) Adding 3g of phyllin and 3.6g of potassium hydroxide into a reaction kettle, and continuously heating to 100 ℃; (4) Adding the methyl silicic acid solution reacted in the step (1) into a reaction kettle, and reacting for 60min at a constant temperature; (5) Pouring into a sedimentation tank for cooling and sedimentation, and obtaining yellowish sol for standby use, namely solution A;
the method for activating the molecular sieve comprises the following steps: the molecular sieve is heat treated for 2 hours at the temperature of 100 ℃, and then activated for 2 hours at the temperature of 400 ℃ by a resistance furnace.
2. The wall repair paste as claimed in claim 1, which is characterized by comprising the following components in parts by weight:
heavy calcium: 50 to 80 parts of the components in parts by weight,
talc powder: 15 to 40 parts of the components in parts by weight,
starch ether: 0.1 to 0.4 part of the total weight of the composition,
cellulose ether: 0.3 to 0.5 part of the total weight of the composition,
waterproof emulsion: 5 to 8 parts of the components,
wood fiber: 0.5 to 1 part of the total weight of the composition,
molecular sieve loaded nuciferine waterproof agent: 2 to 8 parts of the components,
bentonite: 0.5 to 1 part of the total weight of the composition,
water: 20-50 parts.
3. A wall repair paste according to claim 1 or 2, wherein the whiteness of the heavy calcium is greater than or equal to 90.
4. A wall-supplementing paste according to claim 1 or 2, wherein the heavy calcium is a mixture of heavy calcium with fineness of 200 meshes and heavy calcium with fineness of 400 meshes.
5. A wall repair paste according to claim 1 or 2 wherein the cellulose ether is at least one of hydroxyethyl cellulose ether, hydroxypropyl methyl cellulose ether and methyl cellulose ether.
6. A wall repair paste according to claim 1 or 2, wherein the water-repellent emulsion is at least one of acrylic polymer, styrene-butadiene polymer and PVA polymer.
7. The wall repair paste of claim 1, wherein the molecular sieve comprises at least one of a carbon molecular sieve and a ZMS-5 molecular sieve.
8. A method of preparing a wall repair paste according to any one of claims 1 to 7, comprising the steps of:
s1: adding the cellulose ether into water, dispersing, and sequentially adding the bentonite, the heavy calcium carbonate, the talcum powder, the starch ether and the wood fiber;
s2: and (2) adding the waterproof emulsion and the nuciferine waterproof agent loaded by the molecular sieve into the mixture obtained in the step (S1), and uniformly mixing.
9. Use of a wall repair paste according to any one of claims 1 to 7 for repairing a wall hole.
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