CN111978033B - Capillary crystalline waterproof coating and preparation method and use method thereof - Google Patents
Capillary crystalline waterproof coating and preparation method and use method thereof Download PDFInfo
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- CN111978033B CN111978033B CN202010439912.4A CN202010439912A CN111978033B CN 111978033 B CN111978033 B CN 111978033B CN 202010439912 A CN202010439912 A CN 202010439912A CN 111978033 B CN111978033 B CN 111978033B
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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
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/141—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 calcium sulfate cements containing dihydrated gypsum before the final hardening step, e.g. forming a dihydrated gypsum product followed by a de- and rehydration step
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a permeable crystallization type waterproof coating and a preparation method and a use method thereof, and relates to the technical field of waterproof coatings. The permeable crystallization type waterproof coating comprises the following raw materials in parts by weight: 40-60 parts of active master batch, 480-530 parts of cement, 360-410 parts of quartz sand powder, 25-50 parts of UEA expanding agent, 5-10 parts of dry product of polycarboxylate water reducing agent, 1-3 parts of HPMC, 1-3 parts of mortar defoaming agent, 1-6 parts of hydrophobic powder, 8-12 parts of redispersible latex powder and 1-3 parts of polypropylene fiber. The formula of the permeable crystallization type waterproof coating is obtained through repeated experimental research, the permeable crystallization type waterproof coating has higher impermeability, and compared with similar products in the market, the permeable crystallization type waterproof coating also has the performance characteristics of high compression strength and breaking strength, low water absorption, good workability and the like.
Description
Technical Field
The invention relates to the technical field of waterproof coatings, in particular to a permeable crystallization type waterproof coating and a preparation method and a use method thereof.
Background
As concrete is widely used in the engineering field, insufficient durability of concrete structures is increasingly receiving attention, wherein water intrusion is a significant cause of deterioration and reduction in durability of concrete. Therefore, the waterproofing treatment of concrete is an effective measure to delay the restoration time and improve the durability thereof.
At present, the waterproof treatment of concrete mainly comprises an external waterproof technology for treating symptoms and an internal waterproof technology for treating root causes. The external waterproof is flexible waterproof, and is provided with waterproof coiled materials and waterproof coatings, wherein a layer of hydrophobic elastic protective layer is formed on the surface of concrete by mainly utilizing high molecular substances through a polymerization modification means, so that the surface of the concrete is sealed to prevent water from passing through. The internal waterproof is rigid waterproof, mainly comprises waterproof mortar, waterproof concrete, cement-based capillary crystalline waterproof coating and the like, and the self-waterproof capability of the mortar or concrete structure is improved mainly by reducing capillary water seepage channels of the mortar or concrete.
Although the flexible waterproof material of the external waterproof technology is generally applied in the engineering field, the permeability and pressure resistance is low, the construction performance is complex, the requirement on the flatness of a base layer is high, most of the flexible waterproof materials pollute the environment in the production process and are not beneficial to the environmental protection requirement, and the long-term use of the product in the engineering field is seriously influenced by the characteristics of easy aging, poor durability and the like. Although the durability of the conventional rigid waterproof is satisfied, the waterproof and anti-permeability properties cannot meet the technical requirements of engineering construction. Therefore, the development of a waterproof material with good waterproof and anti-permeability performance, good durability, simple process, environmental protection and no pollution is urgent.
Disclosure of Invention
The invention aims to provide a permeable crystallization type waterproof coating as well as a preparation method and a use method thereof, so as to solve the technical problems.
In order to achieve the above purpose, the invention firstly provides a permeable crystallization type waterproof coating, which comprises the following raw materials in parts by weight: 40-60 parts of active master batch, 480-530 parts of cement, 360-410 parts of quartz sand powder, 25-50 parts of UEA expanding agent, 5-10 parts of dry product of polycarboxylate water reducing agent, 1-3 parts of HPMC, 1-3 parts of mortar defoaming agent, 1-6 parts of hydrophobic powder, 8-12 parts of redispersible latex powder and 1-3 parts of polypropylene fiber.
It is worth mentioning that the capillary crystalline waterproof coating of the present invention is in a dry powder form, that is, each raw material in the capillary crystalline waterproof coating is in a dry powder form.
After the permeable crystallization type waterproof coating is mixed with water and uniformly stirred and is constructed on the surface of a concrete structure or a mortar structure, active chemical substances in the permeable crystallization type waterproof coating can permeate into the concrete structure or the mortar structure by taking the water as a carrier, the active chemical substances and hydration products of cement are subjected to chemical reaction to generate water-insoluble crystals, and capillary channels and fine cracks of the concrete or mortar structure are filled and repaired, so that the corrosion of water and other chemical raw materials to the concrete or mortar structure is prevented, the long-term waterproof effect can be achieved, and the permeable crystallization type waterproof coating has higher durability.
The permeable crystallization type waterproof coating has a strong permeable crystallization effect, and can repair cracks smaller than 0.4mm in a cement-based material.
It is worth mentioning that the HPMC is hydroxypropyl methylcellulose, which is abbreviated as english.
In some embodiments of the invention, the polycarboxylate-type water reducing agent is prepared according to the preparation method disclosed in patent ZL 201310692466.8.
Specifically, the preparation method of the polycarboxylate water reducing agent comprises the following steps:
mixing 0.2-1 part of regulator, 0.2-0.6 part of reducer and 20-40 parts of water in parts by weight, and stirring to prepare a first drop of feed;
mixing 11-16 parts of unsaturated monocarboxylic acid and derivative monomer thereof and 2-5 parts of water, and stirring to prepare a second drop of feed;
adding 60-80 parts of water, 100 parts of unsaturated polyoxyalkylene ether monomer, 0.3-0.8 part of oxidant and 0.3-1.2 parts of azo initiator into a reaction kettle in sequence, and dissolving to obtain a kettle bottom material;
simultaneously dripping the first drop of feed and the second drop of feed into the kettle bottom material;
continuously stirring;
regulating the pH value of the solution in the reaction kettle to be 5-8 by taking 12-20 parts of liquid alkali as a neutralizing material;
and (7) discharging.
It can be understood that the polycarboxylate-type water reducing agent prepared by the method is an aqueous product, and the polycarboxylate-type water reducing agent is dehydrated to obtain a dry product.
In some embodiments of the invention, the active master batch comprises, by weight, 30-40 parts of a calcium ion compound, 30-40 parts of a crystallization precipitator, 20-30 parts of a complexing agent, and 10-15 parts of a dispersing agent.
In some embodiments of the present invention, the calcium ion compound comprises at least one of calcium chloride and dihydrate gypsum, the crystallization precipitant comprises at least one of potassium methyl silicate and sodium methyl silicate, the complexing agent comprises at least one of citric acid and sodium citrate, and the dispersing agent comprises at least one of triethanolamine and lithium magnesium silicate.
In some embodiments of the invention, the cement comprises at least one of PO42.5 cement and PC32.5 cement, and the hydrophobic powder comprises at least one of silicone type hydrophobic powder and calcium stearate.
In some embodiments of the invention, the particle size of the quartz sand powder is 80-120 meshes, and the length of the polypropylene fiber is 3-6 mm.
The invention also provides a preparation method of the capillary crystalline waterproof coating, which comprises the steps of drying the polycarboxylate water reducing agent to obtain a dried product, and mixing the dried product of the polycarboxylate water reducing agent with other raw materials to obtain the capillary crystalline waterproof coating.
Optionally, the drying mode of the polycarboxylate water reducing agent is as follows: diluting the polycarboxylate water reducing agent with water, and performing spray drying to obtain a dried product; optionally, the mixing manner is as follows: adding the raw materials into a gravity-free mixer, and mixing and stirring for 30-40 minutes.
The invention also provides a using method of the permeable crystallization type waterproof coating, which comprises the following steps: and mixing the permeable crystallization type waterproof coating with water for use.
Optionally, the capillary crystalline waterproof coating and water are mixed according to a ratio of 1: 0.25-0.40 of the above-mentioned components.
The capillary crystalline waterproof coating is applied by two brushing ways, the first brushing way is uniformly coated on the base layer by a rubber scraper, and the thickness is controlled to be 0.7-1.0 mm; the second brushing can be carried out after the first brushing is completely cured after 24 hours (on the basis of no foot sticking), the brushing directions of the first brushing and the second brushing are mutually vertical, the total thickness of the two brushing is controlled to be 2mm, and the anti-seepage pressure of the mortar can reach more than 2.0 MPa.
The invention has the beneficial effects that:
the formula of the permeable crystallization type waterproof coating is obtained through repeated experimental research, the permeable crystallization type waterproof coating has higher impermeability, and compared with similar products in the market, the permeable crystallization type waterproof coating also has the performance characteristics of high compression strength and breaking strength, low water absorption, good workability and the like. The permeable crystallization type waterproof coating can be widely applied to construction of the upstream surface and the downstream surface, can be applied to waterproof construction in various concrete engineering fields, and has good durability.
Detailed Description
The terms as used herein:
"prepared from … …" is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of … …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of … …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or range defined by a list of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when the range "1 ~ 5" is disclosed, the ranges described should be construed to include the ranges "1 ~ 4", "1 ~ 3", "1 ~ 2 and 4 ~ 5", "1 ~ 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
In these examples, the parts and percentages are by mass unless otherwise indicated.
"parts by weight" means the basic unit of measure indicating the relationship of the mass ratio of the plurality of components, and 1 part may represent any unit mass, for example, 1g or 2.689 g. If the parts by weight of the component A are a parts and the parts by weight of the component B are B parts, the ratio of the mass of the component A to the mass of the component B is expressed as a: b. alternatively, the mass of the A component is aK and the mass of the B component is bK (K is an arbitrary number, and represents a multiple factor). It is not to be understood that, unlike the parts by weight, the sum of the parts by weight of all components is not limited to 100 parts.
"and/or" is used to indicate that one or both of the illustrated conditions may occur, e.g., a and/or B includes (a and B) and (a or B).
Embodiments of the present invention will be described in detail below with reference to specific examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially. In the examples and comparative examples, the mortar defoamer was obtained from DEFEN defoamer.
Example 1
A preparation method of a permeable crystallization type waterproof coating comprises the following steps:
step a, firstly preparing an aqueous product of the polycarboxylate-type water reducing agent according to the preparation method disclosed in patent ZL201310692466.8, then adding water to dilute the aqueous product to 30 wt% of the original concentration, and drying the aqueous product into powder by using a spray drying process for later use.
Specifically, the preparation method of the polycarboxylate water reducing agent comprises the following steps:
(1) 0.6 kg of mercaptopropanol, 0.2 kg of mercaptopropionic acid, 0.2 kg of isopropanol, 0.3 kg of sodium iso-VC, 0.3 kg of VC and 30.0 kg of water are respectively weighed, stirred uniformly and prepared into a first drop for standby application.
(2) Respectively weighing 12.8 kg of acrylic acid, 1.6 kg of 2-acrylamido-2-methylpropanesulfonic acid, 0.8 kg of hydroxypropyl acrylate, 0.8 kg of sodium methallylsulfonate and 5.0 kg of water, uniformly stirring, and preparing a second dropwise adding material for later use.
(3) Sequentially adding 60 kg of water, 80 kg of isopentenyl polyoxyethylene ether, 20 kg of methyl allyl polyoxyethylene ether, 0.8 kg of hydrogen peroxide (27.5 wt%) and 1.2 kg of azodicyano valeric acid into a reaction kettle at normal temperature to serve as a kettle bottom material, dropwise adding a first drop of material and a second drop of material simultaneously when the powder is completely dissolved, and dropwise adding the first drop of material for 2.5 hours; the second drop was added dropwise over 2.0 hours. And after the first drop of the material is added dropwise, continuously stirring and reacting for 1.0 hour, and then adding 18 kg of 32 wt% sodium hydroxide solution for neutralization reaction, so that the pH value of the material is controlled to be 5-8, and then discharging.
And b, sequentially adding the active master batch, the cement, the quartz sand powder, the UEA water reducing agent, the polycarboxylate water reducing agent, the HPMC, the mortar defoaming agent, the hydrophobic powder, the redispersible latex powder and the polypropylene fiber into a gravity-free mixer, mixing and stirring for 40 minutes, and packaging for use.
The formula of the raw materials (by weight portion) is as follows:
specifically, the active master batch comprises, by weight, 30 parts of a calcium ion compound, 40 parts of a crystallization precipitator, 20 parts of a complexing agent and 15 parts of a dispersing agent, wherein the calcium ion compound is calcium chloride, the crystallization precipitator is methyl potassium silicate, the complexing agent is citric acid, and the dispersing agent is triethanolamine.
Specifically, the cement is PO42.5 cement.
Specifically, the granularity of the quartz sand powder is 120 meshes.
Specifically, the length of the polypropylene fiber is 6 mm.
Specifically, the hydrophobic powder is organosilicon type hydrophobic powder.
Example 2
A preparation method of a permeable crystallization type waterproof coating comprises the following steps:
step a, firstly preparing an aqueous product of the polycarboxylate-type water reducing agent according to the preparation method disclosed in the patent ZL201310692466.8, then adding water to dilute the aqueous product to 40 wt% of the original concentration, and drying the aqueous product into powder by using a spray drying process for later use.
Specifically, the preparation method of the polycarboxylate water reducing agent comprises the following steps:
(1) 0.44 kg of mercaptopropanol, 0.24 kg of mercaptopropionic acid, 0.12 kg of isopropanol, 0.3 kg of sodium iso-VC, 0.1 kg of VC and 25.0 kg of water are respectively weighed and evenly stirred to prepare a first drop for standby application.
(2) Respectively weighing 10.5 kg of acrylic acid, 0.7 kg of 2-acrylamido-2-methylpropanesulfonic acid, 1.4 kg of hydroxypropyl acrylate, 1.4 kg of sodium methallylsulfonate and 4.0 kg of water, uniformly stirring, and preparing a second dropwise adding material for later use.
(3) Respectively adding 70 kg of water, 50 kg of isopentenyl polyoxyethylene ether, 50 kg of methyl alkenyl polyoxyethylene ether, 0.5 kg of hydrogen peroxide (27.5 wt%) and 0.8 kg of azodicyano valeric acid into a reaction kettle at normal temperature in sequence to serve as a kettle bottom material, dropwise adding a first drop of material and a second drop of material at the same time when the powder is completely dissolved, and dropwise adding the first drop of material for 2.4 hours; the second drop was added dropwise over 1.9 hours. And after the first drop of the material is added dropwise, continuously stirring and reacting for 1.0 hour, and then adding 15 kg of 32 wt% sodium hydroxide solution for neutralization reaction, so that the pH value of the material is controlled to be 5-8, and then discharging.
And b, sequentially adding the active master batch, the cement, the quartz sand powder, the UEA water reducing agent, the polycarboxylate water reducing agent, the HPMC, the mortar defoaming agent, the hydrophobic powder, the redispersible latex powder and the polypropylene fiber into a gravity-free mixer, mixing and stirring for 30 minutes, and packaging for use.
The formula of the raw materials (by weight portion) is as follows:
specifically, the active master batch comprises, by weight, 40 parts of a calcium ion compound, 30 parts of a crystallization precipitant, 30 parts of a complexing agent and 10 parts of a dispersing agent, wherein the calcium ion compound is dihydrate gypsum, the crystallization precipitant is sodium methylsilicate, the complexing agent is sodium citrate, and the dispersing agent is lithium magnesium silicate.
Specifically, the cement is PO42.5 cement.
Specifically, the granularity of the quartz sand powder is 80 meshes.
Specifically, the length of the polypropylene fiber is 3 mm.
Specifically, the hydrophobic powder is organosilicon type hydrophobic powder.
Example 3
A preparation method of a permeable crystallization type waterproof coating comprises the following steps:
step a, firstly preparing an aqueous product of the polycarboxylate-type water reducing agent according to the preparation method disclosed in the patent ZL201310692466.8, then adding water to dilute the aqueous product to 50 wt% of the original concentration, and drying the aqueous product into powder by using a spray drying process for later use.
Specifically, the preparation method of the polycarboxylate water reducing agent comprises the following steps:
(1) 0.25 kg of mercaptopropanol, 0.15 kg of mercaptopropionic acid, 0.10 kg of isopropanol, 0.3 kg of sodium iso-VC and 20.0 kg of water are respectively weighed and evenly stirred to prepare a first drop for feeding and waiting for use.
(2) Respectively weighing 7.7 kg of acrylic acid, 1.1 kg of 2-acrylamido-2-methylpropanesulfonic acid, 1.1 kg of hydroxypropyl acrylate, 1.1 kg of sodium methallylsulfonate and 2.0 kg of water, uniformly stirring, and preparing a second dropwise adding material for later use.
(3) Respectively adding 80 kg of water, 100 kg of isopentenyl polyoxyethylene ether, 0.3 kg of ammonium persulfate and 0.3 kg of azodicyano valeric acid into a reaction kettle at normal temperature in sequence to serve as kettle bottom materials, dropwise adding a first drop of material and a second drop of material when the powder is completely dissolved, and dropwise adding the first drop of material for 2.6 hours; the second drop was added dropwise over 2.1 hours. And after the first drop of the material is added, continuously stirring and reacting for 1.0 hour, and then adding 13 kg of 32 wt% sodium hydroxide solution for neutralization reaction, so that the material can be discharged after the pH value of the material is controlled to be 5-8.
And b, sequentially adding the active master batch, the cement, the quartz sand powder, the UEA water reducing agent, the polycarboxylate water reducing agent, the HPMC, the mortar defoaming agent, the hydrophobic powder, the redispersible latex powder and the polypropylene fiber into a gravity-free mixer, mixing and stirring for 35 minutes, and packaging for use.
The formula of the raw materials (by weight portion) is as follows:
specifically, the active master batch comprises, by weight, 30-40 parts of a calcium ion compound, 30-40 parts of a crystallization precipitator, 20-30 parts of a complexing agent and 10-15 parts of a dispersing agent, wherein the calcium ion compound is calcium chloride, the crystallization precipitator is sodium methylsilicate, the complexing agent is citric acid, and the dispersing agent is lithium magnesium silicate.
Specifically, the cement is PC32.5 cement.
Specifically, the granularity of the quartz sand powder is 100 meshes.
Specifically, the length of the polypropylene fiber is 5 mm.
Specifically, the hydrophobic powder is calcium stearate.
Comparative example 1
A preparation method of a permeable crystallization type waterproof coating comprises the following steps: sequentially adding the active master batch, cement, quartz sand powder, UEA water reducing agent, polycarboxylate water reducing agent, HPMC, mortar defoaming agent, hydrophobic powder, redispersible latex powder and polypropylene fiber into a gravity-free mixer, mixing and stirring for 35 minutes, and packaging for use.
The formula of the raw materials (by weight portion) is as follows:
specifically, the polycarboxylate water reducing agent is a common product purchased from the market, and is not a ZL201310692466.8 patent product.
Specifically, the active master batch comprises, by weight, 30-40 parts of a calcium ion compound, 30-40 parts of a crystallization precipitator, 20-30 parts of a complexing agent and 10-15 parts of a dispersing agent, wherein the calcium ion compound is calcium chloride, the crystallization precipitator is sodium methylsilicate, the complexing agent is citric acid, and the dispersing agent is lithium magnesium silicate.
Specifically, the cement is PC32.5 cement.
Specifically, the granularity of the quartz sand powder is 100 meshes.
Specifically, the length of the polypropylene fiber is 5 mm.
Specifically, the hydrophobic powder is calcium stearate.
Comparative analysis of product Properties
The results of the tests carried out on example 1, example 2, example 3, comparative example 1 and similar products on the market according to the national standard GB18445-2012 are shown in the following table.
As can be seen from the data in the table, the permeable crystallization type waterproof coating prepared in the embodiments 1-3 of the invention is obviously superior to similar products in the market, and the 28d flexural strength can reach 4.5 MPa; the 28d compressive strength can reach 25.2 MPa; compared with the existing similar products in the market, the permeable crystallization type waterproof coating prepared in the embodiments 1-3 of the invention has the characteristics of obvious better mechanical property; in addition, the secondary osmotic pressure resistance (56d) of the permeable crystalline waterproof coating prepared in the embodiments 1 to 3 of the invention can reach more than 2.5MPa, and the permeable crystalline waterproof coating has the characteristic of excellent waterproof performance.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (8)
1. A permeable crystallization type waterproof coating is characterized by comprising the following raw materials in parts by weight: 40-60 parts of active master batch, 480-530 parts of cement, 360-410 parts of quartz sand powder, 25-50 parts of UEA expanding agent, 5-10 parts of dry product of polycarboxylate water reducing agent, 1-3 parts of HPMC, 1-3 parts of mortar defoamer, 1-6 parts of hydrophobic powder, 8-12 parts of redispersible latex powder and 1-3 parts of polypropylene fiber; the active master batch consists of 30-40 parts of calcium ion compound, 30-40 parts of crystallization precipitator, 20-30 parts of complexing agent and 10-15 parts of dispersing agent;
the preparation method of the polycarboxylate water reducing agent comprises the following steps:
mixing 0.2-1 part of regulator, 0.2-0.6 part of reducer and 20-40 parts of water in parts by weight, and stirring to prepare a first drop of feed;
mixing 11-16 parts of unsaturated monocarboxylic acid and derivative monomer thereof and 2-5 parts of water, and stirring to prepare a second drop of feed;
adding 60-80 parts of water, 100 parts of unsaturated polyoxyalkylene ether monomer, 0.3-0.8 part of oxidant and 0.3-1.2 parts of azo initiator into a reaction kettle in sequence, and dissolving to obtain a kettle bottom material;
simultaneously dripping the first drop of feed and the second drop of feed into the kettle bottom material;
continuously stirring;
regulating the pH value of the solution in the reaction kettle to be 5-8 by taking 12-20 parts of liquid alkali as a neutralizing material;
and (6) discharging.
2. The permeable crystalline waterproof coating material of claim 1, wherein the calcium ion compound comprises at least one of calcium chloride and dihydrate gypsum, the crystal precipitant comprises at least one of potassium methyl silicate and sodium methyl silicate, the complexing agent comprises at least one of citric acid and sodium citrate, and the diffusion agent comprises at least one of triethanolamine and lithium magnesium silicate.
3. A capillary crystalline waterproofing coating as claimed in claim 1, wherein said cement comprises at least one of PO42.5 cement and PC32.5 cement, and said hydrophobic powder comprises at least one of silicone type hydrophobic powder and calcium stearate.
4. The permeable crystallization type waterproof coating material as claimed in claim 1, wherein the particle size of the quartz sand powder is 80-120 mesh, and the length of the polypropylene fiber is 3-6 mm.
5. A method of producing a permeable crystalline waterproofing paint according to any one of claims 1 to 4, wherein the polycarboxylate-type water reducing agent is dried to obtain a dried product thereof, and the dried product of the polycarboxylate-type water reducing agent is mixed with other raw materials to obtain the permeable crystalline waterproofing paint.
6. The method for preparing a permeable crystalline waterproofing paint according to claim 5, wherein the polycarboxylate-based water reducing agent is dried in such a manner that: diluting the polycarboxylate water reducing agent with water, and performing spray drying to obtain a dried product; the mixing mode is as follows: adding the raw materials into a gravity-free mixer, and mixing and stirring for 30-40 minutes.
7. A method of using a permeable crystalline waterproof coating material according to any one of claims 1 to 4, wherein the permeable crystalline waterproof coating material is mixed with water and used.
8. The method of using a permeable crystalline waterproof coating according to claim 7, wherein the permeable crystalline waterproof coating is mixed with water in a ratio of 1: 0.25-0.40 of the above-mentioned components.
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| CN101891432B (en) * | 2010-07-14 | 2012-07-18 | 江苏博特新材料有限公司 | Permeable crystalline waterproof coating |
| CN102875082A (en) * | 2011-07-14 | 2013-01-16 | 上海惠邦特种涂料有限公司 | Cement-based permeable crystalline core master batch and its application |
| CN102503346B (en) * | 2011-11-08 | 2013-04-10 | 姜哲 | Cement-based penetrable crystallized waterproof paint, preparation method and construction method thereof |
| CN103755882B (en) * | 2013-12-17 | 2015-12-09 | 上饶市天佳新型材料有限公司 | Polycarboxylate based water reducer and preparation method thereof |
| CN103755286B (en) * | 2014-01-24 | 2016-05-04 | 郑家玉 | A kind of high-efficiency cement based penetration crystallization type water proofing paint and preparation method thereof and construction method |
| KR101706716B1 (en) * | 2014-08-27 | 2017-02-14 | (주)삼성건업 | Permeability waterproof stuff film and construction method of the same |
| CN108996973A (en) * | 2018-09-30 | 2018-12-14 | 中国十七冶集团有限公司 | A kind of penetration crystallization type water proofing paint |
| CN110922134A (en) * | 2019-12-09 | 2020-03-27 | 马鞍山十七冶工程科技有限责任公司 | Cement-based capillary crystalline waterproof coating and preparation method thereof |
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