CN115536346A - Water-based zero-VOCs (volatile organic compounds) micro-nano novel environment-friendly facing mortar as well as preparation method and application thereof - Google Patents
Water-based zero-VOCs (volatile organic compounds) micro-nano novel environment-friendly facing mortar as well as preparation method and application thereof Download PDFInfo
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
- C04B14/068—Specific natural sands, e.g. sea -, beach -, dune - or desert sand
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
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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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/002—Water
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/32—Polyethers, e.g. alkylphenol polyglycolether
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
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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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- 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
Abstract
The invention discloses an aqueous zero-VOCs (volatile organic compounds) micro-nano novel environment-friendly facing mortar as well as a preparation method and application thereof, and relates to the technical field of environment-friendly low-carbon building materials. The invention discloses a novel aqueous zero-VOCs micro-nano environment-friendly facing mortar which comprises the following components: cement, full tailings and/or superfine tailing powder with the granularity of more than 350 meshes, color sand coloring material, regulator and water; the regulator comprises methallyl alcohol polyoxyethylene ether, sulfate, glycerol polyoxyethylene ether, sasanquasaponin and water. The invention adopts the non-screened full tailings or tailings micro powder with more than 350 meshes for configuration, realizes the full utilization of the mineral dressing tailings, meets the comprehensive consumption requirement of the ore tailings, has excellent mechanical strength, adhesive force, weather resistance and durability, and can be applied to the outer surfaces of various materials; the raw materials of the facing mortar do not use organic resin and VOCs, so the facing mortar is environment-friendly and ecological.
Description
Technical Field
The invention belongs to the technical field of environment-friendly low-carbon building materials, and particularly relates to water-based zero-VOCs micro-nano novel environment-friendly facing mortar, a preparation method thereof, and application thereof to wall surfaces made of concrete, bricks or metal and the like.
Background
At present, the mineral tailings are recycled by firing and forming into products such as ceramics, bricks and the like, the products need to be formed by a fuel high-temperature mode, the energy consumption is high, the carbon dioxide emission can be directly or indirectly increased, the requirements on the components and the fineness of the tailings are more, the requirements on functions and the transport distance are limited, the product market demand is not large, and the consumption of the whole tailings is limited. The mine tailings are also applied to conventional building materials, namely fine sand screened out is used for producing cement, concrete, aerated block and wet-mixed mortar, but the use amount of the whole tailings is not large due to the influence of factors such as transport distance, low market price and the like; and a part of ore tailings are dried and then screened in a multi-stage mode to obtain powder particles with different fineness (mesh number) for manufacturing real stone paint, tile adhesive and coating, however, the requirements of the products on the composition and fineness of the tailings are strict, the complicated screening and collecting treatment processes consume energy and time, dust pollution is large, particularly, the tailings micropowder with more than 350 meshes cannot be applied, and new secondary solid waste pollution with huge amount is formed.
In general, the main problems of resource utilization of mine tailings in China are as follows:
(1) Ore tailings need to be subjected to complicated multi-stage screening, coarse grains can be obtained and used for building sand, 20-200 meshes are used for real stone paint, 200-350 meshes are used for tile glue and paint, and micro powder (accounting for more than 30% of the whole tailings) with more than 350 meshes cannot be utilized, so that the separation cost is high, the dust control difficulty in the multi-stage screening and packaging process is high, the dust pollution is high, the value of the separated fine sand is low, and the resource utilization rate of the ore tailings is insufficient;
(2) When the coarse powder of 20-350 meshes is used for products such as real stone paint, tile glue, coating and the like, volatile Organic Solvents (VOCs), synthetic resins and other petrochemical raw materials are required to be used, the use of the ecological-unfriendly VOCs restricts application scenes, consumes the petrochemical raw materials, increases carbon emission, and harmful substances in production and construction links have great harm to the health of workers.
Due to the reasons, the total resource utilization amount of related industrial and civil fields in China each year is less than 20% of new increment of ore tailings every year, the resource utilization rate of the ore tailings required by China reaches 60% or even higher, and a great gap exists, so that the development of new products and technologies for directly using the whole tailings without screening is urgently needed, and the large-scale and high-valued application of the ore dressing whole tailings is realized.
It is worth noting that large-scale infrastructure developed in nearly 20 years in China has large demand for infrastructure quantity, and particularly with the improvement of construction quality and quality of living places, the demand for environment protection requirements and novel high-quality building materials and products is increasing day by day. Taking the wall surface as an example, the wall surface is mainly formed by tile pasting and paint brushing in the past, and the tile pasting and paint brushing is not durable and is easy to fall off, so that the appearance and the protection function are influenced, and even the accidents that the falling of the tile hurts the life of people occur occasionally. In recent years, the interior and exterior wall real stone paint filled with the ultrafine silica sand particles, using a large amount of resin binder and using part of organic solvent has been developed, although the texture is closer to the natural appearance and is relatively firm in a certain time, volatile organic matters can cause serious air pollution, and the production, construction and subsequent application of the paint are harmful to human bodies and the environment; when the coating is applied to the surface of an alkaline substrate such as concrete and cement mortar, the resin is not alkali-resistant, the failure phenomena such as aging, embrittlement, falling and the like of the stone-like paint can be accelerated due to poor weather resistance, and the service life does not meet the long-term requirement; the stone-like paint filling material needs silica sand fine particles which are acidic, have purer components, proper particle size and narrow distribution, so that the material cost is higher; in addition, the stone-like paint usually needs a plurality of procedures of polishing, priming, spraying and finishing, and the construction is time-consuming and labor-consuming.
Therefore, for the wall surface in the building field, there is a need to develop a novel high-performance facing material which has excellent durability, cost competitiveness, convenient construction, environmental protection and protection functions.
Disclosure of Invention
The invention aims to provide the water-based zero-VOCs micro-nano novel environment-friendly facing mortar, which is prepared by adopting non-screened full tailings or tailings micropowder with more than 350 meshes, realizes the full utilization of the mineral dressing tailings, has excellent mechanical strength, adhesive force, weather resistance and durability, and can be applied to various wall surfaces such as metal, inorganic, organic, inorganic/organic composite and the like; the raw materials of the facing mortar do not use organic resin and VOCs, so the facing mortar is environment-friendly and ecological.
In order to realize the purpose of the invention, the invention provides a novel water-based zero-VOCs micro-nano environment-friendly facing mortar which is prepared from the following raw materials in parts by weight: 150-450 parts of cement, 600-900 parts of mine tailings, 1-200 parts of color sand coloring material, 2-20 parts of regulator and a proper amount of water;
the regulator is a polyether composite regulator.
Further, the ore tailings are any one of full tailings or ultramicro tailings powder with a particle size of more than 350 meshes or a composition.
Furthermore, the color sand coloring material is natural sand.
Further, the polyether composite regulator comprises, by 100 parts by mass: 10 to 30 portions of methallyl alcohol polyoxyethylene ether, 1 to 5 portions of sulfate, 0.15 to 15 portions of glycerol polyoxyethylene ether, 0.01 to 0.1 portion of sasanquasaponin and the balance of water.
Furthermore, the molecular weight of the methallyl alcohol polyoxyethylene ether is 1-5 ten thousand.
Further, the sulfate is any one of potassium sulfate or sodium sulfate.
The invention also provides a preparation method of the aqueous zero-VOCs micro-nano novel environment-friendly facing mortar, which specifically comprises the following steps:
(1) Preparation of polyether composite regulator: weighing methallyl alcohol polyoxyethylene ether, sulfate, glycerol polyoxyethylene ether, sasanquasaponin and water with required mass, and uniformly mixing for later use.
(2) Weighing cement, mine tailing and color sand coloring materials with required mass, grinding for 15-60 min, adding a polyether composite regulator when 20-30% of grinding and mixing time is left in the grinding and mixing process, and continuously grinding to obtain a semi-finished product, wherein the fineness modulus of the semi-finished product is 0.3-1.8, preferably 0.5-1.2; the materials such as cement, mine tailings, color sand coloring material, complexing agent and the like are all in a negative pressure state in the grinding process, the lifting hopper feeding process and the material conveying pipeline, so that dust is not overflowed.
(3) And (3) uniformly stirring the semi-finished product and water to obtain the water-based zero-VOCs micro-nano novel environment-friendly facing mortar.
Further, the mass ratio of the semi-finished product to water is 10: (1-5).
Further, the grinding method is any one of shearing, ball milling and roll milling.
The invention provides an application method of aqueous zero-VOCs micro-nano novel environment-friendly facing mortar, which comprises the following steps: the novel environment-friendly facing mortar is sprayed to concrete, bricks or metal walls by a spray gun or a spray can in a hydraulic or pneumatic driving mode, and is hardened after 1-3 days to form a firm, weather-proof and durable wall environment-friendly facing layer.
The invention achieves the following beneficial effects:
1. the mine tailings used in the invention can be screened, and full tailings and/or ultramicro tailings powder with more than 350 meshes remained in the existing product processing are used as main raw materials, so that the comprehensive consumption requirement of the mine tailings is completely met.
2. The invention takes water as a solvent, assists a small amount of environment-friendly superplasticizer and biomass-derived consistency regulator, applies natural coloring materials, does not use volatile harmful organic solvent, synthetic resin or organic pigment, and has the advantages of no environmental pollution, carbon emission reduction and the like.
3. The invention uses inorganic cementing material to replace resin binder, has stronger adhesive force and durability, and can be sprayed and firmly adhered on various substrates such as metal, inorganic, organic, inorganic/organic composite substrates and the like.
4. The invention uses the negative pressure one-time full mixing process in the processing and production links, and has no dust pollution and low energy consumption in production.
5. According to the invention, the polyether composite regulator is adopted to fully disperse micron and nanometer silicon oxide, calcium carbonate and other particles in the tailings, so that uniformly distributed crystal seeds are provided for the subsequent hydration process, and the mechanical property and durability of the micro-nano facing are promoted to be improved. The methallyl alcohol polyoxyethylene ether mainly utilizes carboxylic acid and sulfonic acid anions to adsorb and disperse cement and tailing particles, and utilizes hydrophilic structures such as rich alcoholic hydroxyl groups and the anionic functional groups to realize sufficient diffusion and flow in a small amount of water; the glycerol polyoxyethylene polyether mainly plays a role in thickening and water retention, and prevents the facing from water shortage caused by rapid volatilization and adsorption by a base material; the sulfate provides a proper amount of sulfate to promote the enrichment of calcium ions in cement and tailings and the nucleation and crystal growth of hydraulic cementing substances such as calcium sulfate, calcium silicate and the like; the sasanquasaponin can also promote the stirring process to form stable microbubbles, and improve the constructability and the freeze-thaw resistance of the facing material.
Compared with the current commercialized materials and products, the regulator prepared by the invention has an excellent function of blending fine powder below 350 meshes in the tailings (the conventional mortar can not use sand material with less than 200 meshes of micro powder particles more than 10%), and particularly enables the facing mortar to have the advantages of high strength (the compressive strength of the conventional mortar is usually not more than 10MPa and the flexural strength is not more than 3 MPa) and strong constructability.
6. The invention adopts full tailings and/or ultramicro tailing powder with the granularity of more than 350 meshes as main raw materials to prepare the water-based zero-VOCs micro-nano environment-friendly wall surface decoration materials with various colors, and the wall surface decoration materials are sprayed, brushed and applied to various indoor and outdoor wall surfaces such as cement walls, brick walls, steel walls and the like. According to the formula of the invention, each ton of micro-nano environment-friendly wall surface decoration material comprises not less than 500 kg of tailing materials, and the total amount of environment-friendly regulators is not more than 20 kg. The Mohs hardness of the surface of the finished product is higher than 5 seven days after the finished product is sprayed; the anti-stripping grade is more than or equal to 6 according to an ASTMD3170-03 test; the 28-day flexural strength and compressive strength of the mortar are respectively not lower than 5MPa and 22MPa; baking for 3 days at 150 ℃, unlike the softening or the embrittlement of real stone paint, ceramic tile glue and conventional coating, the hardness is improved by more than 10 percent, and the adhesive force is improved by more than 15 percent; the aging phenomenon does not occur when 320nm ultraviolet radiation is irradiated; after 24 hours of spraying, the mixture is soaked in hot water at 70 ℃ for 90 days without swelling and peeling.
7. The water-based zero-VOCs micro-nano environment-friendly wall surface decoration material created by the invention does not volatilize toxic organic molecules, has adhesion force superior to that of the traditional real stone paint and coating, is weather-resistant, and particularly has the advantages of higher anti-peeling strength and better weather resistance as the time is longer, and the expected service life can be more than 50 years.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the invention, the cement is P.O 42.5.
The molecular weight of the methallyl alcohol polyoxyethylene ether in the embodiment of the invention is 35000-50000, and the methallyl alcohol polyoxyethylene ether is self-made. The methallyl alcohol polyoxyethylene ether can also be a commercial product, and the molecular weight range of the methallyl alcohol polyoxyethylene ether is 1-5 ten thousand.
The following description will be given to the aqueous zero-VOCs micro-nano novel environment-friendly facing mortar of the invention by combining specific embodiments.
Example 1
Preparing a regulator: weighing 10 parts of methallyl alcohol polyoxyethylene ether, 5 parts of sodium sulfate, 15 parts of glycerol polyoxyethylene ether, 0.1 part of sasanquasaponin and 69.9 parts of water by mass, and uniformly mixing.
Preparation of a light blue water-based zero-VOCs micro-nano novel environment-friendly facing mortar finished product:
weighing 150 parts of cement, 900 parts of gold mine full tailings and 1 part of blue natural colored sand, ball-milling and mixing for 42 minutes, adding 20 parts of regulator, and ball-milling and mixing for 18 minutes to obtain a micro-nano novel environment-friendly facing semi-finished product with zero VOCs; and (3) uniformly stirring 10 parts of the semi-finished product and 1 part of water to obtain a finished product.
The application comprises the following steps: and (3) putting the finished product into a 4-liter spraying pot, connecting a 1P air compressor, and spraying the finished product onto a concrete wall surface.
And (3) performance detection:
and (3) standing the facing mortar sprayed to the concrete wall surface for 7 days to form the concrete wall environment-friendly light blue facing layer with the surface Mohs hardness of 5.5 and the anti-peeling strength of 7 grades.
The flexural strength and the compressive strength of the concrete are respectively 5.7MPa and 22.5MPa when the concrete is molded by adopting a mortar mold and is subjected to standard maintenance for 28 days; after the concrete blocks which are subjected to standard maintenance for 28 days and sprayed with the light blue facing layer are dried in a muffle furnace for 72 hours at the temperature of 150 ℃, the hardness and the adhesive force are respectively improved by 27.3 percent and 28.3 percent; the sample is exposed to 320nm ultraviolet radiation for 6 months without aging phenomenon; after 24 hours of spraying, the sample is taken and soaked in hot water at 70 ℃ for 90 days without swelling and peeling.
Example 2
Preparing a regulator: weighing 30 parts of methallyl alcohol polyoxyethylene ether, 1 part of sodium sulfate, 0.15 part of glycerol polyoxyethylene ether, 0.01 part of sasanquasaponin and 68.84 parts of water by mass, and uniformly mixing.
Preparing a finished product of the beige water-based zero-VOCs micro-nano novel environment-friendly facing mortar:
weighing 450 parts of cement, 600 parts of iron ore tailing superfine powder with the granularity of more than 350 meshes and 200 parts of beige natural colored sand, mixing for 12 minutes by adopting a ball mill, adding 15 parts of regulator, and mixing for 5 minutes by adopting the ball mill to obtain a zero-VOCs micro-nano novel environment-friendly veneer semi-finished product. And (3) uniformly stirring 10 parts of the semi-finished product and 3.5 parts of water to obtain a beige aqueous zero-VOCs micro-nano novel environment-friendly finished product.
The application comprises the following steps: and (3) putting the finished product into a 4-liter sprinkling can, connecting a 1.5P air compressor, and spraying the finished product on the wall surface of the aerated brick.
And (3) performance detection:
and (3) standing the facing mortar sprayed to the wall surface of the air brick for 7 days to form the environment-friendly beige facing layer of the air brick wall with the surface Mohs hardness of 6 and the peel strength of 8.
The flexural strength and the compressive strength of the concrete are respectively 6.5MPa and 27.1MPa when the concrete is molded by adopting a mortar mold and is subjected to standard maintenance for 28 days; after the air-entrained bricks which are subjected to standard culture for 28 days and sprayed with the beige decorative surface layer are dried in a muffle furnace for 72 hours at the temperature of 150 ℃, the hardness and the adhesive force are respectively improved by 16.6 percent and 21.2 percent; the sample is exposed to 320nm ultraviolet radiation for 6 months without aging phenomenon; after 24 hours of spraying, the sample is taken and soaked in hot water at 70 ℃ for 90 days without swelling and peeling.
Example 3
Preparing a regulator: weighing 18 parts of methallyl alcohol polyoxyethylene ether, 3 parts of potassium sulfate, 10 parts of glycerol polyoxyethylene ether, 0.05 part of sasanquasaponin and 68.95 parts of water by mass, and uniformly mixing.
Preparation of a green water-based zero-VOCs micro-nano novel environment-friendly facing mortar finished product:
weighing 300 parts of cement, 600 parts of copper mine full tailings, 200 parts of copper mine tailing ultrafine powder of more than 350 meshes and 100 parts of grass green natural colored sand, mixing for 27 minutes by ball milling, adding 9 parts of regulator, and mixing for 10 minutes by ball milling to obtain a micro-nano novel environment-friendly facing semi-finished product with zero VOCs. And (3) uniformly stirring 10 parts of the semi-finished product and 2 parts of water to obtain a green water-based micro-nano novel environment-friendly finished product with zero VOCs.
The application comprises the following steps: and (4) putting the finished product into a 4-liter sprinkling can, connecting a 1.5P air compressor, and spraying the finished product onto the wall surface of a steel structure.
And (3) performance detection:
and (3) placing the facing mortar sprayed to the steel structure wall surface for 7 days to form the steel structure wall environment-friendly green facing layer with the Mohs hardness of 6.5 and the peeling strength of 7 grades.
The flexural strength and the compressive strength of the concrete are respectively 7.2MPa and 26.3MPa when the concrete is molded by adopting a mortar mold and is subjected to standard maintenance for 28 days; after a steel structure plate which is subjected to standard maintenance for 28 days and sprayed with a green decorative surface layer is dried in a muffle furnace for 72 hours at the temperature of 150 ℃, the hardness and the adhesive force are respectively improved by 21.7 percent and 23.9 percent; the sample is exposed to 320nm ultraviolet radiation for 6 months without aging phenomenon; after 24 hours of spraying, the sample is taken and soaked in hot water at 70 ℃ for 90 days without swelling and peeling.
Example 4
Preparing a regulator: weighing 12 parts of methallyl alcohol polyoxyethylene ether, 2 parts of potassium sulfate, 5 parts of glycerol polyoxyethylene ether, 0.07 part of sasanquasaponin and 80.93 parts of water by mass, and uniformly mixing.
Preparing a finished product of the red water-based zero-VOCs micro-nano novel environment-friendly facing mortar:
weighing 280 parts of cement, 500 parts of tungsten ore full tailings, 220 parts of tungsten ore tailing ultrafine powder of more than 350 meshes and 120 parts of Chinese red natural color sand, mixing for 20 minutes by ball milling, adding 18 parts of regulator, and mixing for 10 minutes by ball milling to obtain a novel micro-nano environment-friendly facing semi-finished product with zero VOCs. And (3) uniformly stirring 10 parts of the semi-finished product and 3 parts of water to obtain a red water-based micro-nano novel environment-friendly finished product with zero VOCs.
The application comprises the following steps: and (3) putting the finished product into a 4-liter sprinkling can, connecting a 1.5P air compressor, and spraying the finished product on the baking-free brick structure wall surface.
And (3) performance detection:
and (3) standing the facing mortar sprayed to the baking-free brick structure wall surface for 7 days to form an environment-friendly red facing layer of the baking-free brick structure wall body, wherein the Mohs hardness of the surface of the facing mortar is 5.1, and the peel strength of the facing mortar is 6 grade.
The flexural strength and the compressive strength of the steel are respectively 5.2MPa and 22.3MPa when the steel is molded by a sand mould and maintained for 28 days in a standard way; after the baking-free bricks which are subjected to standard culture for 28 days and sprayed with the red finish coat are dried in a muffle furnace for 72 hours at 150 ℃, the hardness and the adhesive force are respectively improved by 17.5 percent and 20.3 percent; the sample is exposed to 320nm ultraviolet radiation for 6 months without aging phenomenon; after 24 hours of spraying, the sample is taken and soaked in hot water at 70 ℃ for 90 days without swelling and peeling phenomena.
Example 5
Preparing a regulator: weighing 23 parts of methallyl alcohol polyoxyethylene ether, 3 parts of sodium sulfate, 8 parts of glycerol polyoxyethylene ether, 0.03 part of sasanquasaponin and 65.97 parts of water by mass, and preparing 100 parts of regulator.
Preparing an orange aqueous zero-VOCs micro-nano novel environment-friendly facing mortar finished product:
245 parts of cement, 550 parts of lead-zinc ore full tailings, 300 parts of lead-zinc ore tailing ultrafine powder with the granularity of more than 350 meshes and 180 parts of orange natural colored sand are weighed, ball-milling and mixing are carried out for 30 minutes, 12 parts of regulator are added, and ball-milling and mixing are carried out for 12 minutes, so that the novel zero-VOCs micro-nano environment-friendly veneer semi-finished product is obtained. And (3) uniformly stirring 10 parts of the semi-finished product and 1.5 parts of water to obtain an orange aqueous micro-nano novel environment-friendly finished product with zero VOCs.
The application comprises the following steps: and (3) putting the finished product into a 4-liter sprinkling can, connecting a 1.5P air compressor, and spraying the finished product on the wall surface of the bare-faced iron structure of the board house.
And (3) performance detection:
and (3) placing the facing mortar sprayed to the bare-surface structural wall surface of the board house for 7 days to form an environment-friendly orange facing layer of the bare-surface iron structural wall body of the board house, wherein the environment-friendly orange facing layer has the Mohs hardness of 7.2 and the anti-peeling strength of 7 grades.
The flexural strength and the compressive strength of the steel are respectively 6.3MPa and 23.9MPa when the steel is molded by a sand mould and maintained for 28 days in a standard way; after a board room iron panel which is subjected to standard maintenance for 28 days and sprayed with an orange decorative finish layer is dried in a muffle furnace for 72 hours at 150 ℃, the hardness and the adhesive force are respectively improved by 18.9 percent and 27.7 percent; the sample is exposed to 320nm ultraviolet radiation for 6 months without aging phenomenon; after 24 hours of spraying, the sample is taken and soaked in hot water at 70 ℃ for 90 days without swelling and peeling.
Comparative example 1
In contrast to example 5, the preparation of the finished orange finishing mortar using only conventional polyvinyl alcohol (PVA) as conditioning agent:
245 parts of cement, 550 parts of lead-zinc ore full tailings, 300 parts of lead-zinc ore tailing ultrafine powder with the granularity of more than 350 meshes and 180 parts of orange natural colored sand are weighed, ball-milled and mixed for 30 minutes, 12 parts of PVA (polyvinyl alcohol) regulator is added, and the mixture is ball-milled and mixed for 12 minutes, and then a semi-finished product is plastered. And (3) uniformly stirring 10 parts of the semi-finished product and a proper amount of water until the semi-finished product is in a similar state in the embodiment 5, thus obtaining an orange finished product of the plastering mortar.
The application comprises the following steps: and (3) putting the finished product into a 4-liter sprinkling can, connecting a 1.5P air compressor, and spraying the finished product on the wall surface of the bare-faced iron structure of the board house.
And (3) performance detection:
after the facing mortar sprayed to the bare-surface structural wall surface of the board house is placed for 7 days, the Mohs hardness of the surface of the facing mortar is only 4.1, and the peel strength is 5.5 grade.
The flexural strength and the compressive strength of the concrete are respectively 3.3MPa and 15.2MPa when the concrete is molded by adopting a mortar mold and is subjected to standard maintenance for 28 days; after a board room iron panel which is subjected to standard maintenance for 28 days and sprayed with an orange decorative finish is dried in a muffle furnace for 72 hours at the temperature of 150 ℃, the hardness and the adhesive force are respectively reduced by 27.3 percent and 35.6 percent; aging and embrittlement phenomena appear when the sample is exposed to 320nm ultraviolet radiation for 3 months, and the sample begins to fall off after being irradiated for 6 months; after 24 hours of spraying, the sample is taken and soaked in hot water at 70 ℃ for 20 days, and then the swelling and peeling phenomena occur.
The technical features of the embodiments described above can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention.
Claims (9)
1. The water-based zero-VOCs micro-nano novel environment-friendly facing mortar is characterized by comprising the following raw materials in parts by weight: 150-450 parts of cement, 600-900 parts of mine tailings, 1-200 parts of color sand pigment, 2-20 parts of regulator and a proper amount of water;
the regulator is a polyether composite regulator;
the polyether composite regulator comprises the following components in 100 parts by weight: 10 to 30 portions of methallyl alcohol polyoxyethylene ether, 1 to 5 portions of sulfate, 0.15 to 15 portions of glycerol polyoxyethylene ether, 0.01 to 0.1 portion of sasanquasaponin and the balance of water.
2. The aqueous zero-VOCs micro-nano novel environment-friendly facing mortar according to claim 1, wherein the mine tailings are any one of or a combination of whole tailings or ultrafine tailings powder with a particle size of 350 meshes or more.
3. The aqueous zero-VOCs micro-nano novel environment-friendly facing mortar according to claim 1, wherein the color sand coloring material is natural mined sand.
4. The aqueous zero-VOCs micro-nano novel environment-friendly facing mortar of claim 1, wherein the molecular weight of the methallyl alcohol polyoxyethylene ether is 1-5 ten thousand.
5. The aqueous zero-VOCs micro-nano novel environment-friendly facing mortar according to claim 1, wherein the sulfate is any one of potassium sulfate and sodium sulfate.
6. The preparation method of the aqueous zero-VOCs micro-nano novel environment-friendly facing mortar according to any one of claims 1 to 5, which is characterized by comprising the following steps:
(1) Preparation of polyether composite regulator: weighing methallyl alcohol polyoxyethylene ether, sulfate, glycerol polyoxyethylene ether, sasanquasaponin and water with required mass, and uniformly mixing for later use;
(2) Weighing cement, mine tailing and color sand coloring materials with required mass, grinding for 15-60 min, adding a polyether composite regulator when 20-30% of grinding and mixing time remains in the grinding and mixing process, and continuously grinding to obtain a semi-finished product;
(3) And (3) uniformly stirring the semi-finished product and water to obtain the water-based zero-VOCs micro-nano novel environment-friendly facing mortar.
7. The preparation method of the aqueous zero-VOCs micro-nano novel environment-friendly facing mortar according to claim 6, wherein the mass ratio of the semi-finished product to water is 10: (1-5).
8. The preparation method of the aqueous zero-VOCs micro-nano novel environment-friendly facing mortar according to claim 6, wherein the grinding method is any one of shearing, ball milling and roller milling.
9. The application of the aqueous zero-VOCs micro-nano novel environment-friendly facing mortar of claim 1, wherein the driving mode of hydraulic pressure or air pressure is adopted, the coating is sprayed on the wall surface, and the coating is hardened after 1 to 3 days.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560083A (en) * | 2009-06-02 | 2009-10-21 | 河北科技大学 | Dry powder mortar of mine tailings |
| CN104556866A (en) * | 2014-12-23 | 2015-04-29 | 中建商品混凝土有限公司 | Tailing powder wet-mixed plastering mortar |
| CN105439510A (en) * | 2015-10-13 | 2016-03-30 | 江西贝融循环材料股份有限公司 | Environment-friendly high-strength wear-resistant self-leveling mortar |
| CN110606711A (en) * | 2019-08-16 | 2019-12-24 | 海南太和科技有限公司 | Machine-made sand dry-mixed plastering mortar |
| WO2021182961A1 (en) * | 2020-03-13 | 2021-09-16 | Nederlandse Organisatie Voor Toegepast- Natuurwetenschappelijk Onderzoek Tno | Mineral binder |
-
2022
- 2022-12-02 CN CN202211536420.2A patent/CN115536346B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560083A (en) * | 2009-06-02 | 2009-10-21 | 河北科技大学 | Dry powder mortar of mine tailings |
| CN104556866A (en) * | 2014-12-23 | 2015-04-29 | 中建商品混凝土有限公司 | Tailing powder wet-mixed plastering mortar |
| CN105439510A (en) * | 2015-10-13 | 2016-03-30 | 江西贝融循环材料股份有限公司 | Environment-friendly high-strength wear-resistant self-leveling mortar |
| CN110606711A (en) * | 2019-08-16 | 2019-12-24 | 海南太和科技有限公司 | Machine-made sand dry-mixed plastering mortar |
| WO2021182961A1 (en) * | 2020-03-13 | 2021-09-16 | Nederlandse Organisatie Voor Toegepast- Natuurwetenschappelijk Onderzoek Tno | Mineral binder |
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