CN111825410A - Waterproof material capable of forming film and permeating, and preparation method and application thereof - Google Patents
Waterproof material capable of forming film and permeating, and preparation method and application thereof Download PDFInfo
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- CN111825410A CN111825410A CN202010532244.XA CN202010532244A CN111825410A CN 111825410 A CN111825410 A CN 111825410A CN 202010532244 A CN202010532244 A CN 202010532244A CN 111825410 A CN111825410 A CN 111825410A
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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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00508—Cement paints
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
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Abstract
The invention discloses a waterproof material capable of forming a film and permeating, a preparation method and application thereof, wherein the waterproof material comprises A, B components, A component: sodium silicate, a surfactant, a reaction retarder, a reducing agent, a reaction promoter, an anti-freezing agent, a metal ion blocking agent, a surface hardening agent, an antirust agent, a photoinitiator, a crosslinking agent, water and an acrylate emulsion; and B component: white cement, gypsum, silica fume, mineral powder, fly ash, citric acid, magnesium fluosilicate, magnesium oxide, sodium silicate, a reinforcing component and fumed silica. The waterproof material which is formed into a film and permeated is suitable for various environments, can achieve good waterproof effect on building structures in any environment, can form a seamless complete high-strength waterproof coating film, and prevents leakage; and large-scale machining is not needed, the production efficiency is high, the investment is less, the construction is convenient, heating and boiling are not needed, the environment is protected, no pollution is caused, and the labor cost is greatly reduced.
Description
Technical Field
The invention relates to a waterproof material for buildings, in particular to a waterproof material which can form a film and permeate, and a preparation method and application thereof.
Background
Compared with the traditional waterproof material, the water-based permeable inorganic waterproof agent has irreplaceable advantages, and compared with a surface film-forming waterproof material, the water-based permeable inorganic waterproof agent has the advantage that crystals are generated by crystallization through a chemical reaction so as to block cracks and pores in concrete; compared with organic waterproof coatings, the coating has the advantages of no pungent smell and aging problem, good weather resistance, no toxicity, greenness and environmental protection; the depth of the crystal is generally deeper than that of the surface film-forming waterproof material, and the crystal has the advantages of crystallization, automatic repair function, air permeability and the like. The water-based permeable inorganic waterproof agent can solve the problem that the traditional material is difficult to construct, can improve the working efficiency of waterproof engineering, reduces the cost of the waterproof engineering, and plays an important role in rigid waterproofing of concrete.
Compared with an aqueous capillary crystalline waterproofing agent, the surface film-forming waterproof material also has the irreplaceable advantages, is clear and visible, cannot cause difficulty in distinguishing the difference between the constructed concrete and the un-constructed concrete or easily identify the difference between the constructed concrete and other materials, and has the characteristic of tensile resistance when being used as a flexible material.
At present, only one of the existing products on the market is available, because the two materials of the film-forming waterproof material on the surface and the water-based permeable crystalline waterproof agent cannot coexist, the two materials react with each other or both fail, so that the original effect of each component cannot be realized. If to the initial porosity of concrete equidimension not, can play different effects through different compositions in the material, the surface layer part becomes the membrane solidification earlier, and the part of inside infiltration possesses sufficient reaction time, treats that limited effective substance concentrates on reacting together and produces more hydration products and block up the hole, just so can all be applicable to the concrete of different porosities and different intensity equally, can guarantee that the use of actual engineering every time is all effectual, stops to take place the unstable result of water-proof effects. None of the prior art formulations suggest that the waterproofing effect can be achieved by such methods for subject concretes of different porosity and strength.
Therefore, if a waterproof material which is film-forming and permeable is developed, the application and development of the product in the field of building waterproofing can be greatly promoted.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides a waterproof material which is both film-formed and permeable, the waterproof material is suitable for various environments, can achieve good waterproof effect on building structures in any environment, is especially suitable for projects of various extreme environments and some complex scenes in the building repair market, and waterproof engineering of some special areas and engineering, especially underground engineering, and can form a seamless complete high-strength waterproof coating film to prevent leakage no matter complex and irregular parts such as various planes, inclined planes, vertical planes, irregular surfaces and the like; the waterproof coating is free of large-scale machining, high in production efficiency, low in investment, convenient to construct, free of heating and boiling, environment-friendly and pollution-free, labor cost is greatly reduced, the problems that the curing time of a permeable material is long, the actual effect is difficult to distinguish from the appearance after use and the like are solved, the waterproof effect is unstable, and the problems that the impermeability of a film forming material is low and the like can be solved. .
The invention also provides a preparation method, application and a using method of the waterproof material capable of forming the membrane and permeating.
The technical scheme is as follows: in order to achieve the purpose, the waterproof material capable of forming the membrane and permeating is characterized by comprising a component A and a component B, wherein the component A is mainly prepared from the following raw materials in parts by weight: 30-40 parts of sodium silicate, 0.05-0.15 part of surfactant, 0-1 part of reaction retarder, 0.1-0.2 part of reducing agent, 0-5 parts of reaction promoter, 0.06-0.1 part of anti-freezing agent, 0.1-0.3 part of metal ion locking agent, 0.4-0.8 part of surface enhancer, 0.2-0.4 part of antirust agent, 0.25-0.75 part of photoinitiator, 0.25-0.75 part of cross-linking agent, 53-69 parts of water and 40-50 parts of acrylate emulsion; the component B is mainly prepared from the following raw materials in parts by weight: 40-50 parts of white cement, 5-7 parts of gypsum, 5-10 parts of silica fume, 20-30 parts of mineral powder, 5-10 parts of fly ash, 0.25-1.0 part of citric acid, 2-5 parts of magnesium fluosilicate, 5-10 parts of magnesium oxide, 2-5 parts of sodium silicate, 0.25-1.0 part of reinforcing component and 0.25-1.0 part of fumed silica.
Preferably, the reaction retarder is 0.5-1 part, and the reaction accelerator is 2.5-5 parts.
The sodium silicate in the component A is a sodium silicate solution with a solid content of 25%, preferably a sodium silicate solution with a solid content of 25%, and the sodium silicate in the component A is a sodium silicate solution with a modulus of more than 3.0 and a baume degree of 37-42 at 20 ℃. It is a main component and is also a crystallization precipitator, and the function of the crystallization precipitator is that the crystallization precipitator can perform chemical reaction with calcium ions in a concrete internal pore solution to generate CaSiO3The crystal fills cracks and pores, so that the compactness and the waterproof effect are improved;
the sodium silicate in the component B is instant powdery sodium silicate.
The surfactant is sodium dodecyl sulfonate or sodium dodecyl benzene sulfonate, and mainly has the effects of reducing the surface tension of an interface and promoting the permeation of materials. In addition, the surfactant can also play a role in dispersion, so that the agglomeration of sodium silicate colloid particles is hindered, the sodium silicate is kept in a nano-scale size, and the permeation along a capillary is facilitated.
The reaction retarder is sodium borate or tetrasodium ethylene diamine tetraacetate, has a chelating effect on calcium ions, and reacts with the calcium ions in the concrete to generate soluble complex double salt, so that the precipitation caused by the early combination of silicate and the calcium ions is avoided.
Wherein the reducing agent is thiourea or sodium thiosulfate, and can inhibit silicate from oxidation reaction, thereby achieving the effect of promoting permeation.
The reaction promoter is triethanolamine, is a surfactant, can improve the reaction rate of hydration products such as tricalcium silicate, tetracalcium aluminoferrite and the like in concrete, promotes unhydrated cement particles to be further hydrated, increases the content of calcium ions in capillary pores, and promotes the combination of silicate and the calcium ions. In addition, triethanolamine also serves as a complexing auxiliary agent in the permeable crystallization waterproofing agent, and reacts with calcium ions in concrete to generate insoluble complex double salt, so that dense pores are realized, and the strength and the toughness of the concrete are improved.
The anti-freezing agent is potassium carbonate, can obviously reduce a freezing point, can ensure that the material is not frozen at the temperature of minus 10 ℃, can ensure that a concrete liquid phase is not frozen or partially frozen, and ensures that the concrete is not frozen.
Wherein, the metal ion locking agent is sodium hexametaphosphate, and can improve the water resistance and the acid resistance of hydration products.
The surface hardening agent is magnesium hexafluorosilicate, can fix products such as calcium hydroxide on the surface of concrete, prevent surface weathering, and improve the strength, hardness and wear resistance of the surface.
The antirust agent is silver diammine hydroxide, and can prevent reinforcing steel bars in concrete from being corroded.
The photoinitiator is a benzoin initiator, preferably 2, 2-dimethoxy-acetophenone, has high initiation speed and low cost, is also called a photosensitizer or a light curing agent, and is a compound capable of absorbing energy with a certain wavelength in an ultraviolet light region (250-420 nm) or a visible light region (400-800 nm) to generate free radicals and the like so as to initiate polymerization, crosslinking and curing of monomers.
Wherein the cross-linking agent is methyl trimethoxy silane or double-end acrylamide propyl polysiloxane. The cross-linking agent is also called bridging agent and is an important component of the hydrocarbon-polymerized photoresist, the photochemical curing action of the photoresist depends on the cross-linking agent with double photosensitive functional groups to participate in the reaction, and after exposure, the cross-linking agent generates double free radicals which react with hydrocarbon-polymerized resin to form bridge bonds between polymer molecular chains and become insoluble substances with three-dimensional structures.
Wherein the water is deionized water, and the resistivity is more than or equal to 10 megaohm-cm.
Further, the acrylate emulsion is milky viscous liquid, and is prepared by multi-polymerization of various acrylic acid, methacrylic acid, methyl methacrylate, acrylates and functional auxiliaries and copolymerization through an optimized process. Fine grain size, high gloss, excellent weather resistance, excellent anti-tack property and wide applicability.
Preferably, the content of calcium silicate in the mineral composition of the white cement clinker is more than 60%, the content of SiO2 in the silica fume is more than 85%, and the content of the magnesium fluosilicate is more than 98% in odorless, colorless or white rhombic or acicular crystals.
Wherein the reinforcing component is prepared from lithium carbonate, calcium hydroxide and aluminum sulfate, wherein the weight ratio of the lithium carbonate to the calcium hydroxide to the aluminum sulfate is 0.2-1: 0.3-2: 0.3-2. Preferably, the weight ratio of lithium carbonate, calcium hydroxide and aluminum sulfate is 1:2: 2.
The preparation method of the waterproof material capable of forming the membrane and permeating comprises the following steps:
weighing the raw materials of the component A according to a formula ratio, adding water into a reaction kettle, sequentially adding a surfactant, a reaction retarder, a reducing agent, a reaction accelerator, an anti-freezing agent, a metal ion locking agent, a surface hardening agent, an antirust agent, a photoinitiator and a cross-linking agent into the water to prepare a mixed solution, adding a sodium silicate solution and an acrylate emulsion, fully and uniformly stirring the mixed solution in the reaction kettle, filtering to remove impurities in the solution, and filtering the clear solution to obtain the component A liquid material; the component B is prepared by weighing raw materials according to a formula ratio, and uniformly mixing powdery raw materials of white cement, gypsum, silica fume, mineral powder, fly ash, citric acid, magnesium fluosilicate, magnesium oxide, sodium silicate, a reinforcing component and fumed silica by a ball mill to obtain the component B.
The invention discloses application of a waterproof material which can form a film and permeate in building waterproofing and leakage prevention. It is suitable for projects of various extreme environments and some complex scenes in the building repair market, and waterproof engineering of some special areas and engineering, especially underground engineering, and simultaneously no matter complex and irregular parts such as various planes, inclined planes, vertical planes, irregular surfaces and the like,
preferably, the specific use method of the application comprises the following steps:
firstly, preprocessing an applied concrete base surface; the pretreatment comprises the following specific steps: removing oil stains or other impurities on the surface of the concrete base surface, keeping the surface dry, then adding 10% by mass of B component powder into the A component liquid material, stirring and mixing uniformly, applying the water-based permeable crystalline waterproof material to the concrete base surface by adopting a coating or spraying construction mode, repeatedly coating or spraying for 2-3 times, and drying and maintaining for 24 hours or more.
The reaction mechanism of the present invention: when the component A and the component B are mixed, the mixture is applied to a concrete base surface in a brushing or spraying mode, because the powder of the component B has larger particle size and cannot permeate into the concrete and is left on the surface of the concrete, calcium silicate minerals in white cement in the component B rapidly undergo hydration reaction with part of the component A in the presence of gypsum to rapidly consume moisture, and after the component A liquid material left on the surface of the base layer is illuminated, a cross-linking agent in the material undergoes light cross-linking reaction under the action of a photoinitiator to accelerate the solidification of the part of the material on the surface of the base surface, then the rest of the component A liquid material gradually permeates into the concrete, the part has enough reaction time to react with effective substances in the concrete together to generate more hydration products to block pores, and the stable increase of the later-stage anti-leakage performance of the concrete base layer is promoted through the synergistic action of A, B components, the setting time of the waterproof material is effectively regulated and controlled, and the material can be promoted to be quickly solidified, so that a compact protective layer with certain strength is formed on the surface of a base surface, the anti-permeability capability is improved, and the application range of the material is expanded.
The design principle of the invention is that through the synergistic effect of A, B components in the waterproof material, the initial porosity of concrete with different sizes, the material can play different roles through different components in the material, the B component powder and the A component react together to form a compact protective layer which is soft outside and rigid inside on the surface of the concrete substrate, the surface layer part is firstly filmed and cured, the A component liquid material has the functions of permeability and sealing capillary channels and cracks of cement mortar and concrete, the internally permeated part has enough reaction time, and when limited effective substances are concentrated together to react to generate more hydration products to block the pores, the waterproof paint is also suitable for concrete with different porosities and different strengths, can ensure that the concrete is effective when being used in practical engineering each time, avoids the unstable waterproof effect, improves the impermeability, and achieves the effect of '1 +1 > 2'.
The invention combines the advantages of the permeable material and the film forming material into a whole, the actual effect can be distinguished from the appearance easily after film forming, the invention has the characteristic of film forming in the film forming material, a film is arranged on a building base surface, and the common permeable material can not form the film.
Has the advantages that: compared with the prior art, the invention has the following advantages:
1. the B component powder and the acrylate emulsion in the waterproof material which can be formed into a film and permeate form a white compact protective layer with soft outer and rigid inner on the surface of a concrete substrate together, so that the overall strength of the material is improved by the powder, the powder is endowed with toughness by the acrylate emulsion, the waterproof effect is more visualized finally, and the impermeability is improved.
2. Book (I)The component A liquid material in the waterproof material which can form a film and permeate is prepared by mixing and reacting an alkali metal silicate solution serving as a base material with a catalyst (such as a reaction promoter, a reaction retarder and a surface enhancer) and other auxiliary agents, and has the functions of permeating and sealing capillary channels and cracks of cement mortar and concrete. The main technical principle is that silicate as a main component permeates capillary channels of cement mortar or concrete and is mixed with Ca (OH) generated in the hydration process of cement2The reaction generates water-insoluble calcium silicate hydrate gel (C-S-H), thereby blocking internal pores, sealing capillary channels, increasing compactness, forming a permanent sealing waterproof layer integrated with concrete, improving the durability of cement concrete, endowing the gel with toughness by the acrylate emulsion, ensuring the rigidity and the strength, and simultaneously preventing the gel from being damaged when the structure slightly deforms, and improving the durability of the gel.
3. The reaction retarder and the reaction accelerator in the waterproof material capable of forming the film and penetrating are components which obviously influence the penetration depth and the reaction speed, and the reaction time of the component A penetration type material is prolonged through the two components, so that the material penetrating into the base layer has sufficient time for penetration and reaction.
4. Through the synergistic effect of the A, B components, the powder of the B component has larger particle size, can not permeate into the concrete and is left on the surface of the concrete, the calcium silicate mineral in the white cement of the B component rapidly generates hydration reaction with part of the A component in the presence of gypsum to rapidly consume moisture, and after the A component liquid material left on the surface of a base layer is illuminated, a cross-linking agent in the material generates light cross-linking reaction under the action of a photoinitiator to accelerate the curing of the part of the material on the surface of the base layer, a compact protective layer with certain strength is formed on the surface of the base layer, then most of the A component liquid material can gradually permeate into the concrete, the part has enough reaction time to react together with effective substances in the concrete to generate more hydration products to block pores, and the stable increase of the later-stage leakage resistance of the concrete base layer is promoted, the setting time of the waterproof material is effectively regulated and controlled, the surface layer material can be quickly set, the impermeability is improved, the construction period is greatly shortened, other subsequent procedures of the concrete structure layer are not delayed, one product has two waterproof effects, the reliability of the waterproof material is greatly improved, and the application range of the waterproof material is expanded.
5. The waterproof coating is suitable for various environments, can achieve good waterproof effect on building structures in any environment, is particularly suitable for projects of various extreme environments and some complex scenes in the building repair market, and waterproof engineering of some special areas and engineering, particularly underground engineering, and can form a seamless complete high-strength waterproof coating film no matter complex and irregular parts such as various planes, inclined planes, vertical planes, irregular surfaces and the like, so as to prevent leakage. And large-scale machining is not needed, the preparation is simple, the production efficiency is high, the investment is less, the construction is convenient, heating and boiling are not needed, the environment is protected, no pollution is caused, and the labor cost is greatly reduced.
Detailed Description
The following examples are further illustrated.
All raw materials of the invention are commercially available building materials or industrial auxiliary agents, or commercially available raw materials of the same type can be adopted.
The raw materials used in the following examples are as follows:
sodium silicate: aqueous sodium silicate solution (Zhejiang Silico New Material science and technology Co., Ltd., solid content 25%)
Surfactant (b): sodium dodecyl sulfate or sodium dodecyl benzene sulfonate (Yongli chemical Co., Ltd., type: 2-256)
A reaction retarder: sodium borate or ethylenediaminetetraacetic acid tetrasodium salt (Peitening chemical Co., Ltd., type: 303)
Reducing agent: thiourea or sodium thiosulfate (Shandonghao Yao New Material Co., Ltd., model: Industrial grade)
Reaction accelerator (b): triethanolamine (Guangzhou Maoyan chemical company, model: TEA)
An anti-freezing agent: potassium carbonate (Tianjin Zhongshengtai chemical Co., Ltd., type: industrial grade)
Surface hardening agent: magnesium hexafluorosilicate (Jinhua Fenghui biological science and technology Co., Ltd., Jinan)
Metal ion blocking agent: sodium hexametaphosphate (Suzhou city green complete chemical Co., Ltd., model number: 9652)
Antirust agent: silver diammine hydroxide (Dongguan city Jiexi cleaning agent science and technology Co., Ltd., model: JX-615)
Photoinitiator (2): 2, 2-dimethoxy-phenylacetophenone (Shanghai coconut Biotech Co., Ltd., type: 24650-42-8)
A crosslinking agent: methyltrimethoxysilane (Hangzhou Wolman new material technology Co., Ltd.), bisacrylamide propyl polysiloxane (Hangzhou Wolman new material technology Co., Ltd.)
Acrylate emulsion (Donglian North science and technology Co., Ltd., BA-2100, 55% solids content)
White cement: (Shanghai Turkish Techni Co., Ltd., calcium silicate content in white cement clinker mineral composition is more than 60%)
Gypsum (Wuxi Yang Shi building materials Co., Ltd.)
Silica fume (Beijing German Chang Wei construction engineering technology Co., Ltd., model: 98)
Mineral powder (Jintai environmental resources Co., Ltd.)
Fly ash (Changxinghua Fei chemical Co., Ltd.)
Citric acid (Suzhou Tenghao chemical technology Co., Ltd.)
Magnesium fluorosilicate (magnesium hexafluorosilicate) (Jinan Jinhuafenghui Biotech Co., Ltd.)
Magnesium oxide (Suzhou ze magnesium new materials science and technology limited, model: ZH-V5I)
Powdery sodium silicate: instant powdered sodium silicate (Qingdao gulf chemical Co., Ltd., Specification: SSP-20)
Lithium carbonate (Shanghai Europe gold industry Co., Ltd., model: QJ0005)
Calcium hydroxide (Zhenjiang Volkswagen mining Co., Ltd., model: 97)
Aluminum sulfate (Taizhou city Jixing chemical Co., Ltd.)
Fumed silica (Yingchuang specialty Chemicals, Inc., model: AEROSIL 200).
Example 1
The waterproof material capable of forming a film and permeating comprises the following components in parts by weight:
the component A comprises: 35 parts of sodium silicate aqueous solution (with the solid content of 25 percent), 0.1 part of surfactant, 0.5 part of reaction retarder, 0.15 part of reducing agent, 2.5 parts of reaction accelerator, 0.08 part of anti-freezing agent, 0.2 part of metal ion locking agent, 0.6 part of surface enhancer, 0.3 part of antirust agent, 0.5 part of photoinitiator, 0.5 part of cross-linking agent, 61 parts of water and 45 parts of acrylate emulsion.
And B component: 45 parts of white cement, 6 parts of gypsum, 7.5 parts of silica fume, 25 parts of mineral powder, 7.5 parts of fly ash, 0.6 part of citric acid, 3.5 parts of magnesium fluosilicate, 7.5 parts of magnesium oxide, 3.5 parts of sodium silicate, 0.6 part of reinforcing component and 0.6 part of fumed silica.
Wherein, in the component A: the sodium silicate is sodium silicate aqueous solution (solid content is 25%), the surfactant is sodium dodecyl sulfate, the reaction retarder is sodium borate, the reducing agent is thiourea, the reaction accelerator is triethanolamine, the anti-freezing agent is potassium carbonate, the metal ion locking agent is sodium hexametaphosphate, the surface enhancer is magnesium hexafluorosilicate, the antirust agent is silver diammine hydroxide, the photoinitiator is 2, 2-dimethoxy-phenyl acetophenone, the crosslinking agent is methyltrimethoxysilane, and the water is deionized water. In the component B: the sodium silicate is powdery sodium silicate, and the reinforcing component comprises lithium carbonate, calcium hydroxide and aluminum sulfate in a mass ratio of 1:2: 2.
example 2
The waterproof material capable of forming a film and permeating comprises the following components in parts by weight:
the component A comprises: 30 parts of sodium silicate, 0.05 part of surfactant, 0 part of reaction retarder, 0.1 part of reducing agent, 0 part of reaction accelerator, 0.06 part of anti-freezing agent, 0.1 part of metal ion locking agent, 0.4 part of surface enhancer, 0.2 part of antirust agent, 0.25 part of photoinitiator, 0.25 part of cross-linking agent, 53 parts of water and 40 parts of acrylate emulsion.
And B component: 40 parts of white cement, 5 parts of gypsum, 5 parts of silica fume, 20 parts of mineral powder, 5 parts of fly ash, 0.25 part of citric acid, 2 parts of magnesium fluosilicate, 5 parts of magnesium oxide, 2 parts of sodium silicate, 0.25 part of reinforcing component and 0.25 part of fumed silica.
Wherein, in the component A: the sodium silicate is sodium silicate aqueous solution (solid content is 25%), the surfactant is sodium dodecyl sulfate, the reaction retarder is sodium borate, the reducing agent is thiourea, the reaction accelerator is triethanolamine, the anti-freezing agent is potassium carbonate, the metal ion locking agent is sodium hexametaphosphate, the surface enhancer is magnesium hexafluorosilicate, the antirust agent is silver diammine hydroxide, the photoinitiator is 2, 2-dimethoxy-phenyl acetophenone, the crosslinking agent is methyltrimethoxysilane, and the water is deionized water. In the component B: the sodium silicate is powdery sodium silicate, and the reinforcing component comprises lithium carbonate, calcium hydroxide and aluminum sulfate in a mass ratio of 0.2: 0.3: 0.3.
example 3
The waterproof material capable of forming a film and permeating comprises the following components in parts by weight:
the component A comprises: 40 parts of sodium silicate, 0.15 part of surfactant, 1 part of reaction retarder, 0.2 part of reducing agent, 5 parts of reaction promoter, 0.1 part of anti-freezing agent, 0.3 part of metal ion locking agent, 0.8 part of surface enhancer, 0.4 part of antirust agent, 0.75 part of photoinitiator, 0.75 part of cross-linking agent, 69 parts of water and 50 parts of acrylate emulsion.
And B component: 50 parts of white cement, 7 parts of gypsum, 10 parts of silica fume, 30 parts of mineral powder, 10 parts of fly ash, 1 part of citric acid, 5 parts of magnesium fluosilicate, 10 parts of magnesium oxide, 5 parts of sodium silicate, 1 part of reinforcing component and 1 part of fumed silica.
Wherein, in the component A: the sodium silicate is sodium silicate aqueous solution (solid content is 25%), the surfactant is sodium dodecyl benzene sulfonate, the reaction retarder is ethylenediaminetetraacetic acid tetrasodium salt, the reducing agent is sodium thiosulfate, the reaction accelerator is triethanolamine, the anti-freezing agent is potassium carbonate, the metal ion locking agent is sodium hexametaphosphate, the surface hardening agent is magnesium hexafluorosilicate, the antirust agent is silver diammine hydroxide, the photoinitiator is 2, 2-dimethoxy-phenyl acetophenone, the crosslinking agent is double-end acrylamidopropyl polysiloxane, and the water is deionized water. In the component B: the sodium silicate is powdery sodium silicate, and the reinforcing component comprises lithium carbonate, calcium hydroxide and aluminum sulfate in a mass ratio of 1:2: 2.
comparative example 1
Comparative example 1 is the same as example 1 except that the a component does not contain a photoinitiator and a crosslinking agent.
Comparative example 2
Comparative example 1 is the same in composition and formulation as example 1, except that the a component does not contain a photoinitiator.
Comparative example 3
Comparative example 3 is the same as example 1 except that the crosslinking agent is not included in the A component.
Comparative example 4
Comparative example 4 has the same composition as example 1 except that the A component does not contain silica fume.
Comparative example 5
Comparative example 5 is the same composition as example 1 except that the reinforcing component is not included in the a component.
Comparative example 6
Comparative example 6 has the same composition as example 1 except that the reinforcing component and silica fume were not contained in the A component.
Example 7
The components were weighed out in the formulation ratio according to any one of examples 1 to 3 and comparative examples 1 to 6.
Weighing the raw materials of the component A according to a formula ratio, adding deionized water into a reaction kettle, sequentially adding a surfactant, a reaction retarder, a reducing agent, a reaction accelerator, an anti-freezing agent, a metal ion locking agent, a surface enhancer, an antirust agent, a photoinitiator and a crosslinking agent into water to prepare a mixed solution, adding a sodium silicate solution and an acrylate emulsion, fully and uniformly stirring the mixed solution in the reaction kettle, filtering by using a 100-mesh filter screen to remove impurities in the coating, filtering to remove impurities in the solution, and filtering the filtered clear solution to prepare the component A liquid material; the component B is prepared by weighing raw materials according to a formula ratio, uniformly mixing white cement, gypsum, silica fume, mineral powder, fly ash, citric acid, magnesium fluosilicate, magnesium oxide, sodium silicate, a reinforcing component and fumed silica by a ball mill, and grinding to fineness with specific surface area not less than 350m2Kg, to give component B.
Example 8
Firstly, the materials of any one of examples 1-3 and comparative examples 1-6 are adopted to pre-treat the applied concrete base surface; the pretreatment comprises the following specific steps: removing oil stains or other impurities on the surface of the concrete base surface, keeping the surface dry, then adding 10% by mass of B component powder into the A component liquid material, stirring and mixing uniformly, applying the water-based permeable crystalline waterproof material to the concrete base surface by adopting a coating or spraying construction mode, repeatedly coating or spraying for 2-3 times, and drying and maintaining for 24 hours or more.
Test example 1
The concrete test blocks are treated by the using method of example 8, the water permeation pressure resistance ratio test is carried out on the concrete test blocks according to DBJ01-54-2001 interface permeation type waterproof paint quality inspection evaluation standard, the water permeation pressure resistance ratio test is carried out on the concrete test blocks in the examples and the comparative examples, all the concrete test blocks are uniformly placed in a constant-temperature water curing box to be cured for 14 days, the water-based permeation type inorganic waterproof agent JC/T1018-2006 is referred, and in the standard, only the index of 'permeation height' is a direct index reflecting the effect of the waterproof material, so the performance test is carried out on the concrete test blocks in the examples and the comparative examples, and compared with the similar products and patents adopting the same evaluation method, and the detection results are shown in a table I.
Watch 1
The results in the table show that the water pressure resistance ratio of example 1 is the most excellent, and the comparative analysis of example 1 and comparative examples 1-3 shows that the curing speed of the material added with the cross-linking agent and the photoinitiator is faster, the effect of the two raw material substances used independently is not ideal, and the two raw material substances are necessarily used simultaneously, while the cross-linking agent and the photoinitiator are not added in comparative example 1, the curing speed is obviously reduced, and the actual drying time is required to reach 8-24 h. Through comparative analysis of example 1 and comparative examples 4-6, the addition of silica fume and reinforcing component obviously improves the impermeability of the coating, and each physical property is better, and the effect of the two raw materials used independently is not ideal, and the two raw materials must be used simultaneously. Through comparative analysis of example 1 and CN101671154A examples 1 and 2, the water pressure resistance ratio of the invention is remarkably superior to that of the similar products.
The construction method of example 8 of the present invention was also used to test the open time and the close time of the materials of example 1 and comparative examples 1 to 3, and the results are shown in table two.
Watch two
It can be seen from the above table that of example 1, which performs most well, the material was found to cure faster with the addition of both the crosslinker and photoinitiator. The penetration height, the water permeation resistance pressure ratio and the apparent appearance of the first table and the second table show that the material of the invention is a waterproof material which is both film-forming and permeable, and the effect of the waterproof material prepared by other examples is consistent with that of the waterproof material prepared by the example 1.
In addition, the invention also tests that the A, B component in example 1 is independently applied to show that six test blocks are respectively taken from a concrete impermeability instrument and divided into three parts, the A component, the B component and the AB component material of the invention are respectively coated on the upstream surfaces of the test blocks, after pressurization treatment, the test block coated with the B component alone firstly shows water seepage, water flows leak from tiny pores of a B component coating, then two test blocks coated with the A component show the phenomenon of base surface wetting, water beads are gradually increased along with the gradual increase of pressure, and the test block coated with the AB component material of the invention does not show water seepage until the water pressure reaches 1.3MPa, and compared with the pressure at the bottom of a water column with the height of 130 m, the invention has the advantage of synergy of the A, B component.
The above description is only exemplary of the present invention. It is apparent that the present invention is not limited to the above embodiment examples, and any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims should be construed as the scope of the present invention.
Claims (10)
1. The waterproof material capable of forming a film and permeating is characterized by comprising a component A and a component B, wherein the component A is mainly prepared from the following raw materials in parts by weight: 30-40 parts of sodium silicate, 0.05-0.15 part of surfactant, 0-1 part of reaction retarder, 0.1-0.2 part of reducing agent, 0-5 parts of reaction promoter, 0.06-0.1 part of anti-freezing agent, 0.1-0.3 part of metal ion locking agent, 0.4-0.8 part of surface enhancer, 0.2-0.4 part of antirust agent, 0.25-0.75 part of photoinitiator, 0.25-0.75 part of cross-linking agent, 53-69 parts of water and 40-50 parts of acrylate emulsion; the component B is mainly prepared from the following raw materials in parts by weight: 40-50 parts of white cement, 5-7 parts of gypsum, 5-10 parts of silica fume, 20-30 parts of mineral powder, 5-10 parts of fly ash, 0.25-1.0 part of citric acid, 2-5 parts of magnesium fluosilicate, 5-10 parts of magnesium oxide, 2-5 parts of sodium silicate, 0.25-1.0 part of reinforcing component and 0.25-1.0 part of fumed silica.
2. The both membrane-permeable waterproof material according to claim 1, wherein the sodium silicate in the component A is a sodium silicate solution, and the sodium silicate in the component B is instant powdery sodium silicate.
3. The both film-forming and permeable waterproofing material according to claim 1 wherein the surfactant is sodium dodecyl sulfate or sodium dodecyl benzene sulfonate, the reaction retarder is sodium borate or tetrasodium ethylenediaminetetraacetic acid, and the reducing agent is thiourea or sodium thiosulfate.
4. The both film-forming and permeable waterproofing material according to claim 1 wherein the reaction promoter is triethanolamine, the anti-freezing agent is potassium carbonate, and the metal ion blocking agent is sodium hexametaphosphate.
5. The both film-forming and permeable waterproof material according to claim 1, wherein the surface enhancer is magnesium hexafluorosilicate, the rust preventive agent is silver diammine hydroxide, and the photoinitiator is a benzoin-based initiator.
6. The both film-forming and permeable waterproofing material according to claim 1, wherein the cross-linking agent is methyltrimethoxysilane or bis-acrylamidopropyl polysiloxane.
7. The both-film and permeable waterproofing material according to claim 1 wherein said reinforcing component is made of lithium carbonate, calcium hydroxide and aluminum sulfate, wherein preferably the weight ratio of lithium carbonate, calcium hydroxide and aluminum sulfate is 0.2-1: 0.3-2: 0.3-2.
8. A method of preparing the both membrane-permeable waterproofing material of claim 1, comprising the steps of:
weighing the raw materials of the component A according to a formula ratio, adding water into a reaction kettle, sequentially adding a surfactant, a reaction retarder, a reducing agent, a reaction accelerator, an anti-freezing agent, a metal ion locking agent, a surface hardening agent, an antirust agent, a photoinitiator and a cross-linking agent into the water to prepare a mixed solution, adding a sodium silicate solution and an acrylate emulsion, fully and uniformly stirring the mixed solution in the reaction kettle, filtering to remove impurities in the solution, and filtering the clear solution to obtain the component A liquid material; the component B is prepared by weighing raw materials according to a formula ratio, and uniformly mixing white cement, gypsum, silica fume, mineral powder, fly ash, citric acid, magnesium fluosilicate, magnesium oxide, sodium silicate, a reinforcing component and fumed silica by a ball mill to obtain the component B.
9. Use of the membrane-permeable waterproofing material of claim 1 for waterproofing and leakage-proofing buildings.
10. The application according to claim 9, wherein the specific using method of the application comprises the following steps:
firstly, preprocessing an applied concrete base surface; the pretreatment comprises the following specific steps: removing oil stains or other impurities on the surface of the concrete base surface, keeping the surface dry, then adding the B component powder into the A component liquid material, stirring and mixing uniformly, applying the water-based permeable crystalline waterproof material to the concrete base surface by adopting a coating or spraying construction mode, repeatedly coating or spraying for 2-3 times, and drying and maintaining for 24 hours or more.
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| CN113149512A (en) * | 2021-02-08 | 2021-07-23 | 杨陈方 | Moisture-proof deep active micro powder master batch for building bottom building |
| CN114370170A (en) * | 2021-12-01 | 2022-04-19 | 新乡市润丰泽玉环境材料科技有限公司 | Preparation of capillary crystalline waterproofing agent |
| WO2023155180A1 (en) * | 2022-02-15 | 2023-08-24 | 苏州佳固士新材料科技有限公司 | Propagable self-healing inorganic admixture for concrete and preparation method therefor |
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| CN113149512A (en) * | 2021-02-08 | 2021-07-23 | 杨陈方 | Moisture-proof deep active micro powder master batch for building bottom building |
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