CN109439054B - Putty powder and putty slurry for plastering-free machine, and preparation method and application thereof - Google Patents
Putty powder and putty slurry for plastering-free machine, and preparation method and application thereof Download PDFInfo
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- CN109439054B CN109439054B CN201811605415.6A CN201811605415A CN109439054B CN 109439054 B CN109439054 B CN 109439054B CN 201811605415 A CN201811605415 A CN 201811605415A CN 109439054 B CN109439054 B CN 109439054B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/34—Filling pastes
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F21/00—Implements for finishing work on buildings
- E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
- E04F21/06—Implements for applying plaster, insulating material, or the like
- E04F21/08—Mechanical implements
- E04F21/12—Mechanical implements acting by gas pressure, e.g. steam pressure
Abstract
The invention provides a plastering-free machine putty spraying powder, a plastering-free machine putty spraying slurry, a preparation method and an application thereof, wherein the plastering-free machine putty spraying powder comprises the following components in percentage by weight: 25.0 to 35.0 percent of inorganic cementing material, 35.0 to 50.0 percent of aggregate, 10.0 to 30.0 percent of filler, 1.0 to 3.0 percent of alkali-resistant auxiliary agent, 3.0 to 5.0 percent of redispersible latex powder, 0.2 to 0.4 percent of hydroxypropyl methyl cellulose ether, 0.2 to 0.3 percent of anti-crack fiber, 0.1 to 0.3 percent of thixotropic agent, 0.05 to 0.15 percent of water reducing agent and 0.01 to 0.05 percent of hydrophobic agent; the prepared putty spraying slurry for the plastering-free machine has good bonding strength, cracking resistance, flexibility, water resistance, alkali bleeding resistance and sagging resistance, and has good spraying workability and batch scraping workability, thereby greatly improving the construction efficiency, shortening the construction period and reducing the labor cost.
Description
Technical Field
The invention belongs to the technical field of building materials, and relates to putty powder sprayed by a plastering-free machine, putty slurry sprayed by a plastering-free machine, a preparation method and application thereof.
Background
Based on the advantages of stable quality, short construction period, pollution reduction, strong market competitiveness and the like, the plastering-free building wall body is a necessary trend for the development of high-rise buildings in the future. The novel plastering-free wall at the present stage mainly comprises a full-concrete outer wall plastering-free system, a PC precast slab and a novel passive house exterior decoration system wall. The full-concrete exterior wall plastering-free system has high wall compactness, good flatness and convenient construction, and is widely applied to various large-scale real estate such as Wanke and the like. However, the full concrete wall is formed by demolding, the surface of the full concrete wall has residual demolding agent and has cavity defects with different sizes, the subsequent coating construction has extremely high requirements on the bubbling resistance and the adhesive force of the putty leveling material, the conventional putty product in the market is directly coated on the full concrete wall and easily causes bubbling, cracking and even peeling, the existing construction process usually needs to firstly carry out surface treatment by using an interface agent, and then putty construction can be carried out after the template wall is roughly leveled by adopting the leveling material with high adhesive force, so that the process is complicated, the period is longer, and the cost is high.
With the rapid development of the assembly type building, the exterior wall coating matching integration is a great trend of future development, but the existing exterior wall putty cannot simultaneously meet the coating effects of flat coating, texture, colorful, real stone paint and the like, but the bottom layer matching putty needs to be selected according to the final coating effect, so that the use has great restriction and the universality is poor; meanwhile, the conventional exterior wall putty product is often accompanied with the problem of wall efflorescence after construction, which influences the finishing safety of later-stage paint to a certain extent and also restricts the possibility of safe matching of the conventional putty and different paints.
In addition, due to the advantages of high efficiency, convenience, controllable quality and the like, the spraying construction is widely applied to the field of building interior walls, and according to statistics, compared with manual painting, the spraying construction efficiency can be obviously improved by 1.5-2 times; in the field of building exterior walls, the application of spray construction is not wide, and the main reason is that the formula design and raw material grading of conventional exterior wall putty products are not customized for mechanized spray coating besides subjective factors such as construction habits and the like, and the product performance and construction progress cannot be considered at the same time.
Although both CN 103342506B and CN 107555911A disclose putty for machine-spraying of exterior walls, the anti-bubbling capacity and the adhesive force of the both can not meet the requirements of the whole concrete wall and other plastering-free novel building exterior walls, and can not effectively solve the problem of wall efflorescence, and the matching use with different coatings is also severely restricted.
Therefore, in the field, it is an urgent need to develop a all-in-one all-purpose machine-spraying putty which can be directly applied to the novel plastering-free building wall surfaces of all-concrete walls, can meet the mechanical spraying requirement and has excellent comprehensive performance.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the putty powder and the putty slurry for the plastering-free machine, and the preparation method and the application thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
on one hand, the invention provides putty spraying powder for a plastering-free machine, which comprises the following components in percentage by weight:
25.0-35.0% of inorganic cementing material, 35.0-50.0% of aggregate, 10.0-30.0% of filler, 1.0-3.0% of alkali-resistant auxiliary agent, 3.0-5.0% of redispersible latex powder, 0.2-0.4% of hydroxypropyl methyl cellulose ether, 0.2-0.3% of anti-crack fiber, 0.1-0.3% of thixotropic agent, 0.05-0.15% of water reducing agent and 0.01-0.05% of water repellent.
In the invention, through reasonable collocation and use of the inorganic cementing material, the aggregate and the filler, the putty powder can effectively fill surface defects of a full concrete wall and the like, and can be directly subjected to putty spraying on the surface of the full concrete wall by matching with other components in the putty spraying powder of the plastering-free machine, so that the pumping performance is good, and pipes are not blocked; the high requirements of the anti-bubbling capacity and the adhesive force of the outer wall can be met practically, the anti-sagging performance is good, no sagging phenomenon exists when putty of 3-5mm is sprayed, the efflorescence phenomenon of a base wall can be effectively inhibited, the mechanized construction is realized under the condition that the quality and the requirements of a putty layer are ensured, the construction efficiency is improved, the construction period is shortened, and the labor cost is reduced.
In the invention, the dosage of the inorganic cementing material is 25%, 28.0%, 30.0%, 33.0%, 35% and the like; in the invention, if the use amount of the inorganic cementing material is too small, the bonding strength of the putty does not reach the standard, the putty layer falls off, powder falls off and the like due to insufficient adhesive force between the putty layer and the base layer after the putty layer is put on a wall, and meanwhile, the water resistance and the alkali resistance are reduced; if the amount of the inorganic cementing material is too much, the bonding strength is not increased in equal proportion but is nearly flat, but the cost is increased, the putty layer is difficult to polish, and the shrinkage of the cement layer is increased, so that the cracking of the coating is easily caused, and the decoration and durability of the wall surface are reduced.
In the present invention, the amount of the aggregate is 35.0%, 38%, 40.0%, 43%, 45.0%, 48%, 50%, etc.; in the invention, if the using amount of the aggregate is too small, the using amount of the corresponding inorganic cementing material or filler is increased, the whole grain composition of the putty is finer, the compactness is reduced, the permeability resistance and the flexibility are reduced, and the cost is increased; if the amount of the aggregate is too much, the amount of the corresponding inorganic cementing material or filler is reduced, the overall grain composition of the putty is rough, and the compactness, the flexibility and the bonding strength of the putty are all reduced.
In the present invention, the filler is used in an amount of 10.0%, 13.0%, 15.0%, 18.0%, 20.0%, 23.0%, 25.0%, 28.0%, 30.0%, etc.; in the invention, if the amount of the filler is too small, the corresponding amount of the inorganic cementing material or the aggregate is increased, the integral grain composition of the putty is rough, the compactness is reduced, the permeability resistance and the flexibility are reduced, and the cost is increased; if the amount of the filler is too much, the amount of the corresponding inorganic cementing material or filler is reduced, the overall particle composition of the putty is finer, and the compactness, the flexibility and the bonding strength of the putty are all reduced.
In the present invention, the alkali-resistant auxiliary may be used in an amount of 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, etc.; in the invention, if the dosage of the alkali-resistant additive is too small, the alkali efflorescence phenomenon of the putty can not be effectively inhibited; if the dosage of the alkali-resistant additive is too much, the alkali-efflorescence resistance of the putty is not linearly improved but tends to be stable, but the cost is greatly increased.
In the invention, the dosage of the redispersible emulsion powder can be 3.0%, 3.5%, 4.0%, 4.5%, 5.0% and the like; in the invention, if the dosage of the redispersible latex powder is too small, the flexibility of the putty can be greatly reduced; if the amount of the redispersible latex powder is too much, the flexibility of the putty is improved but tends to be smooth, but the workability and the sanding property of the putty are greatly reduced, and the cost is increased.
In the present invention, the hydroxypropyl methylcellulose ether may be used in an amount of 0.2%, 0.25%, 0.3%, 0.35%, 0.4%, etc.; in the invention, if the dosage of the hydroxypropyl methyl cellulose ether is too small, the water retention effect of the putty is reduced, the development time is shortened, and the workability is poor; if the amount of the hydroxypropyl methyl cellulose ether is too much, the thickening phenomenon can occur after the putty is thickened, the viscosity is high, the stirring is not easy to open, the drying time can be prolonged, and the putty is not beneficial to putty construction.
In the present invention, the anti-crack fiber may be used in an amount of 0.2%, 0.22%, 0.24%, 0.26%, 0.28%, 0.3%, etc.; in the invention, if the dosage of the anti-cracking fiber is too small, because the fiber has larger surface area, a large amount of cement paste is needed for wrapping, so that the content of the cement paste is relatively reduced, namely the content of the material with the gelling effect is reduced, thereby reducing the bonding strength of the putty and simultaneously failing to exert good anti-cracking capability; if the dosage of the anti-crack fibers is too much, the fibers are difficult to disperse uniformly and are easy to intertwine with each other, so that cement slurry effectively wrapped around the fibers is reduced, the pores are enlarged, the binding power is reduced, and the drying shrinkage is aggravated.
In the present invention, the amount of the thixotropic agent may be 0.1%, 0.15%, 0.2%, 0.25%, 0.3%, etc.; in the invention, if the dosage of the thixotropic agent is too small, the workability and the anti-sagging habit of the putty powder mixed into the synthetic slurry are reduced; if the amount of the thixotropic agent is too large, the strength is affected to some extent and the formulation cost is increased.
In the present invention, the amount of the water reducing agent may be 0.05%, 0.07%, 0.09%, 0.11%, 0.13%, 0.15%, etc.; in the invention, if the dosage of the water reducing agent is too small, the early strength of the putty is reduced in proportion, the water demand is increased, and meanwhile, some uncontrollable factors of saltpetering are increased; if the water reducing agent is used in an excessive amount, performance overflow is caused, formulation workability is affected, and cost is increased.
In the present invention, the amount of the water repellent may be 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, etc.; in the invention, if the amount of the water repellent is too small, a hydrophobic coating cannot be formed on the surface of the putty layer, and a good hydrophobic effect cannot be achieved; if the amount of the water repellent is too much, performance overflow can occur, putty workability is affected, and cost is increased.
In the invention, the inorganic cementing material is Portland cement with the weight of P.W32.5 or more; the invention has no special requirements on cement, and the selected cement has low cost and is easy to obtain.
In the invention, the aggregate is quartz sand particles with 40-140 meshes, and the particle composition of the quartz sand particles is as follows:
the aggregate selected by the invention has reasonable quartz sand particle composition, and can ensure that the putty is compact and has high bonding strength; under the condition of the grain composition, the prepared putty has higher compactness and bonding strength, and when any one or more of the grain compositions in the quartz sand grains are lacked or the addition amount of each composition is not in the range defined by the invention, the compactness and the bonding strength of the putty can be influenced.
In the present invention, the amount of the 40-mesh or less particles < 60-mesh may be 20%, 23%, 25%, 28%, 30%, 33%, 35%, 38%, 40%, 43%, 45%, etc.
In the invention, the amount of the 60-mesh or less and less than 80-mesh particles can be 25%, 28%, 30%, 33%, 35%, 38%, 40%, 43%, 45% and the like.
In the invention, the dosage of the 80-mesh or less and 100-mesh particles can be 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50% and the like.
In the invention, the dosage of the 100-mesh or less and 140-mesh particles can be 0%, 1%, 2%, 3%, 4%, 5% and the like.
In the invention, the dosage of the 140-mesh or less particles can be 0%, 1%, 2%, 3%, 4%, 5% and the like.
In the invention, the filler is the combination of quartz sand powder and ground calcium carbonate.
In the present invention, the mass ratio of the quartz sand powder to the ground calcium carbonate may be 1.5:1, 1.6:1, 1.7:1, 1.8:1, 1.9:1, 2.0:1, etc.
In the invention, the mesh number of the quartz sand powder can be 120 meshes, 140 meshes, 160 meshes, 180 meshes, 200 meshes, 220 meshes and the like.
In the present invention, the mesh number of the ground calcium carbonate may be 200 mesh, 220 mesh, 240 mesh, 260 mesh, 280 mesh, 300 mesh, 325 mesh, or the like.
The quartz sand powder is a powder material with a sand feeling, and is matched with the ground limestone for use, so that the missing gradation between the aggregate quartz sand and the filler ground limestone can be compensated, the gradation of the whole aggregate filler system is more average, the powder material is more compact, and the anti-permeability performance is better after the aggregate filler system is placed on a wall; the mass ratio of the quartz sand powder to the ground limestone is 1.5:1-2:1, and the mesh number is in a limited range, so that the obtained aggregate filler has more even system gradation, more compact powder and better anti-permeability after being placed on a wall; if the mass ratio of the two is not within the range of 1.5:1-2:1, the compactness of the prepared powder is reduced, and the permeability resistance is also deteriorated; when the mesh number of the quartz sand powder and the ground limestone is not in a limited range, the grading uniformity of an aggregate filling system can be influenced, so that the compactness of the powder is influenced.
In the present invention, the alkali-resistant auxiliary is a combination of metakaolin and an aksunobilene inhibitor.
In the present invention, the mass ratio of the metakaolin to the aksunobilene inhibitor may be 1:1, 1.1:1, 1.2:1, 1.3:1, 1.4:1, 1.5:1, etc.
The metakaolin is a high-activity inorganic filler and is matched with a saltpetering inhibitor for use, so that the early strength of the putty can be improved, the saltpetering phenomenon can be effectively inhibited, and the later strength development is not influenced; the mass ratio of the two is within the range of 1:1-1.5:1, so that the prepared plastering-free machine putty has higher early strength and can inhibit the occurrence of the phenomena of saltpetering; if the mass ratio of the two is not in the range of 1:1-1.5:1, the early strength of the putty is affected and the effect of inhibiting the efflorescence is poor.
In the invention, the redispersible latex powder is a combination of flexible rubber powder and hydrophobic rubber powder.
In the invention, the flexible rubber powder is watt 5044N rubber powder.
In the invention, the hydrophobic rubber powder is Wake 8034H hydrophobic rubber powder.
In the invention, the mass ratio of the flexible rubber powder to the hydrophobic rubber powder can be 3:1, 3.5:1, 4:1, 4.5:1, 5:1 and the like.
According to the invention, the Wake 5044N glue powder and the Wake 8034H hydrophobic glue powder are compounded and used as organic bonding materials, so that the flexibility of a putty product can be improved, and the putty product has good alkali resistance and water resistance, thereby better meeting the requirements of a mechanical spraying putty system; the mass ratio of the two is within the range of 3:1-5:1, so that the prepared putty has better flexibility, alkali resistance and water resistance; when the mass ratio of the two is not in a limited range, the prepared putty has poor flexibility, alkali resistance and water resistance.
In the invention, the anti-crack fibers are wood fibers or polypropylene fibers.
The crack-resistant fiber is wood fiber or polypropylene fiber, so that the crack resistance of the putty can be improved, and the risk of cracking of the putty is reduced.
In the invention, the water reducing agent is a polycarboxylic acid water reducing agent.
The polycarboxylic acid water reducing agent is selected in the invention, so that the impermeability and the water reducing and permeating performance can be improved.
The second purpose of the invention is to provide a preparation method of the putty powder sprayed by the plastering-free machine, which comprises the following steps: and mixing an inorganic cementing material, aggregate, filler, an alkali-resistant auxiliary agent, redispersible latex powder, hydroxypropyl methyl cellulose ether, anti-crack fibers, a thixotropic agent, a water reducing agent and a water repellent to obtain the putty spraying powder for the plastering-free machine.
The preparation method is simple, raw materials are easy to obtain, the price is low, the preparation can be realized only by simple mixing, and the preparation method is suitable for industrial large-scale production and application.
The invention also aims to provide the plastering-free machine putty spraying slurry which comprises the plastering-free machine putty spraying powder and water, wherein the mass ratio of the water to the plastering-free machine putty spraying powder can be 0.24:1, 0.25:1, 0.26:1, 0.27:1, 0.28:1 and the like.
The putty spraying slurry for the plastering-free machine has the advantages of good bonding strength, flexibility, cracking resistance of the thimble, alkali resistance, sagging resistance and water resistance.
The fourth purpose of the invention is to provide a preparation method of the putty spraying slurry of the plastering-free machine, which comprises the following steps: and mixing water and the putty spraying powder of the plastering-free machine to obtain the putty spraying slurry of the plastering-free machine.
The preparation method is simple, the raw materials are easy to obtain, the price is low, complex process conditions are not needed, and the preparation method is suitable for industrial large-scale production and application.
In the present invention, the mixing temperature is 5 to 40 ℃, and may be 5 ℃, 10 ℃, 15 ℃, 20 ℃, 25 ℃, 30 ℃, 35 ℃, 40 ℃ or the like.
The fifth purpose of the invention is to provide the application of the putty spraying slurry of the plastering-free machine in the mechanized construction of the exterior wall of the building.
In the invention, the building outer wall is a full-concrete outer wall.
Compared with the prior art, the invention has the following beneficial effects:
the invention can effectively fill the defects of the surfaces of the full-concrete wall body by the combined action of the aggregate, the filler and the inorganic gel material, and the compact matrix has good impermeability and can relieve the diffusion of alkaline substances; the preparation method of the putty spraying powder of the plastering-free machine is simple, the raw materials are easy to obtain, the price is low, and the large-scale industrial application is facilitated; the slurry prepared by spraying the putty powder and water through the plastering-free machine has better bonding strength, cracking resistance, flexibility, water resistance, alkali bleeding resistance and sagging resistance, and the spraying constructability and the batch scraping constructability are good, so that the construction efficiency is greatly improved, the construction period is shortened, and the labor cost is reduced.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
The embodiment provides a plastering machine-free putty spraying powder, which comprises the following components in percentage by weight:
30.0 percent of inorganic cementing material, 35.0 percent of aggregate, 29.0 percent of filler, 1.0 percent of alkali-resistant auxiliary agent, 4.0 percent of redispersible latex powder, 0.4 percent of hydroxypropyl methyl cellulose ether, 0.2 percent of anti-crack fiber, 0.2 percent of thixotropic agent, 0.15 percent of water reducing agent and 0.05 percent of hydrophobic agent; the inorganic cementing material is Portland cement with the weight of more than P.W32.5; the filler is the combination of 120-mesh 220-mesh quartz sand powder and 200-mesh 325-mesh heavy calcium carbonate, and the mass ratio of the two is 1.8: 1; the alkali-resistant auxiliary agent is a combination of metakaolin and an Acksonobepan alkali inhibitor, and the mass ratio of the metakaolin to the Acksonobepan alkali inhibitor is 1.2: 1; the redispersible latex powder is a combination of watt 5044N rubber powder and watt 8034H hydrophobic rubber powder, and the mass ratio of the two is 4: 1; the anti-crack fiber is wood fiber; the water reducing agent is a polycarboxylic acid water reducing agent; the aggregate is quartz sand particles of 40-140 meshes;
the particle size distribution of the quartz sand particles is as follows:
the preparation method of the putty spraying powder of the plastering-free machine comprises the following steps: and mixing an inorganic cementing material, aggregate, filler, an alkali-resistant auxiliary agent, redispersible latex powder, hydroxypropyl methyl cellulose ether, anti-crack fibers, a thixotropic agent, a water reducing agent and a water repellent to obtain the putty spraying powder for the plastering-free machine.
The plastering-free machine putty spraying slurry comprises the prepared plastering-free machine putty spraying powder and water, wherein the mass ratio of the water to the plastering-free machine putty spraying powder is 0.26: 1.
The preparation method of the putty spraying slurry of the plastering-free machine comprises the following steps: and mixing water and the putty spraying powder of the plastering-free machine according to the mass ratio of 0.26:1 at 25 ℃ to obtain the putty spraying slurry of the plastering-free machine.
Example 2
The embodiment provides a plastering machine-free putty spraying powder, which comprises the following components in percentage by weight:
30.0 percent of inorganic cementing material, 45.0 percent of aggregate, 18.0 percent of filler, 3.0 percent of alkali-resistant auxiliary agent, 3.0 percent of redispersible latex powder, 0.3 percent of hydroxypropyl methyl cellulose ether, 0.3 percent of anti-crack fiber, 0.3 percent of thixotropic agent, 0.05 percent of water reducing agent and 0.05 percent of hydrophobic agent; the inorganic cementing material is Portland cement with the weight of more than P.W32.5; the filler is the combination of 120-mesh 220-mesh quartz sand powder and 200-mesh 325-mesh heavy calcium carbonate, and the mass ratio of the two is 1.5: 1; the alkali-resistant auxiliary agent is a combination of metakaolin and an Acksonobepan alkali inhibitor, and the mass ratio of the metakaolin to the Acksonobepan alkali inhibitor is 1: 1; the redispersible latex powder is a combination of watt 5044N rubber powder and watt 8034H hydrophobic rubber powder, and the mass ratio of the two is 3: 1; the anti-crack fiber is polypropylene fiber; the water reducing agent is a polycarboxylic acid water reducing agent; the aggregate is quartz sand particles of 40-140 meshes;
the particle size distribution of the quartz sand particles is as follows:
the preparation method of the putty spraying powder of the plastering-free machine comprises the following steps: and mixing an inorganic cementing material, aggregate, filler, an alkali-resistant auxiliary agent, redispersible latex powder, hydroxypropyl methyl cellulose ether, anti-crack fibers, a thixotropic agent, a water reducing agent and a water repellent to obtain the putty spraying powder for the plastering-free machine.
The plastering-free machine putty spraying slurry comprises the prepared plastering-free machine putty spraying powder and water, wherein the mass ratio of the water to the plastering-free machine putty spraying powder is 0.28: 1.
The preparation method of the putty spraying slurry of the plastering-free machine comprises the following steps: and mixing water and the putty spraying powder of the plastering-free machine according to the mass ratio of 0.28:1 at 5 ℃ to obtain the putty spraying slurry of the plastering-free machine.
Example 3
The embodiment provides a plastering machine-free putty spraying powder, which comprises the following components in percentage by weight:
25.0 percent of inorganic cementing material, 40.0 percent of aggregate, 28.2 percent of filler, 1.0 percent of alkali-resistant auxiliary agent, 5.0 percent of redispersible latex powder, 0.4 percent of hydroxypropyl methyl cellulose ether, 0.2 percent of anti-crack fiber, 0.1 percent of thixotropic agent, 0.09 percent of water reducing agent and 0.01 percent of hydrophobic agent; the inorganic cementing material is Portland cement with the weight of more than P.W32.5; the filler is the combination of 120-220-mesh quartz sand powder and 200-325-mesh heavy calcium carbonate, and the mass ratio of the two is 2: 1; the alkali-resistant auxiliary agent is a combination of metakaolin and an Acksonobepan alkali inhibitor, and the mass ratio of the metakaolin to the Acksonobepan alkali inhibitor is 1.5: 1; the redispersible latex powder is a combination of watt 5044N rubber powder and watt 8034H hydrophobic rubber powder, and the mass ratio of the two is 5: 1; the anti-crack fiber is polypropylene fiber; the water reducing agent is a polycarboxylic acid water reducing agent; the aggregate is quartz sand particles of 40-140 meshes;
the particle size distribution of the quartz sand particles is as follows:
the preparation method of the putty spraying powder of the plastering-free machine comprises the following steps: and mixing an inorganic cementing material, aggregate, filler, an alkali-resistant auxiliary agent, redispersible latex powder, hydroxypropyl methyl cellulose ether, anti-crack fibers, a thixotropic agent, a water reducing agent and a water repellent to obtain the putty spraying powder for the plastering-free machine.
The plastering-free machine putty spraying slurry comprises the prepared plastering-free machine putty spraying powder and water, wherein the mass ratio of the water to the plastering-free machine putty spraying powder is 0.24: 1.
The preparation method of the putty spraying slurry of the plastering-free machine comprises the following steps: and mixing water and the putty spraying powder of the plastering-free machine according to the mass ratio of 0.24:1 at 40 ℃ to obtain the putty spraying slurry of the plastering-free machine.
Example 4
The difference from the example 1 is that the filler does not comprise quartz sand powder with 120-220 meshes and only comprises heavy calcium carbonate with 200-325 meshes, and the rest of the raw materials and the preparation method are the same as the example 1.
Example 5
The difference from the example 1 is that the filler does not comprise 200-325 mesh heavy calcium carbonate and only comprises 120-220 mesh quartz sand powder, and the rest of the raw materials and the preparation method are the same as the example 1.
Example 6
The difference from the example 1 is only that the mass ratio of the quartz sand powder with 120-220 meshes and the heavy calcium carbonate with 200-325 meshes in the filler is 1:1, and the rest of the raw materials and the preparation method are the same as those in the example 1.
Example 7
The difference from the example 1 is only that the mass ratio of the quartz sand powder with 120-220 meshes and the heavy calcium carbonate with 200-325 meshes in the filler is 4:1, and the rest of the raw materials and the preparation method are the same as those in the example 1.
Example 8
The difference from example 1 is that the alkali-resistant auxiliary agent does not include metakaolin and includes only the Acksonobepan alkali inhibitor, and the rest of the raw materials and the preparation method are the same as those of example 1.
Example 9
The only difference from example 1 is that the anti-alkali additive does not include an aksunobilene inhibitor, but includes only metakaolin, and the rest of the raw materials and the preparation method are the same as those of example 1.
Example 10
The difference from the example 1 is only that the mass ratio of metakaolin to Acksonobepan alkali inhibitor in the alkali-resistant auxiliary agent is 0.5:1, and the rest of the raw materials and the preparation method are the same as those in the example 1.
Example 11
The difference from the example 1 is only that the mass ratio of metakaolin to Acksonobepan alkali inhibitor in the alkali-resistant auxiliary agent is 3:1, and the rest of the raw materials and the preparation method are the same as those in the example 1.
Example 12
The difference from the example 1 is that the re-dispersible latex powder does not comprise the watt-hour 5044N rubber powder and only comprises the watt-hour 8034H hydrophobic rubber powder, and the rest raw materials and the preparation method are the same as the example 1.
Example 13
The difference from the example 1 is that the re-dispersible latex powder does not comprise tile 8034H hydrophobic glue, only comprises tile 5044N glue powder, and the rest raw materials and the preparation method are the same as the example 1.
Example 14
The difference from the example 1 is that the mass ratio of the watt 5044N rubber powder to the watt 8034H hydrophobic rubber in the re-dispersible latex powder is 1:1, and the rest raw materials and the preparation method are the same as the example 1.
Example 15
The difference from the example 1 is that the mass ratio of the watt 5044N rubber powder to the watt 8034H hydrophobic rubber in the re-dispersible latex powder is 8:1, and the rest raw materials and the preparation method are the same as the example 1.
Example 16
The only difference from example 1 is the particle composition of the particles of quartz sand in the aggregate as follows:
the rest of the raw materials and the preparation method are the same as those in the example 1.
Example 17
The only difference from example 1 is the particle composition of the particles of quartz sand in the aggregate as follows:
the rest of the raw materials and the preparation method are the same as those in the example 1.
Example 18
The only difference from example 1 is the particle composition of the particles of quartz sand in the aggregate as follows:
the rest of the raw materials and the preparation method are the same as those in the example 1.
Example 19
The difference from the example 1 is that the water reducing agent is a fatty acid water reducing agent, and the rest of the raw materials and the preparation method are the same as those in the example 1.
Example 20
The difference from the example 1 is only that the anti-crack fiber is polyester fiber, and the rest of the raw materials and the preparation method are the same as the example 1.
Comparative example 1
The difference from the example 1 is that the plastering-free putty spraying powder does not comprise inorganic gel materials, the addition amounts of the aggregate and the filler are the sum of the addition amounts of the inorganic gel materials, the aggregate and the filler in the example 1, and the mixture is distributed according to the proportion, namely the addition amount of the aggregate is 51.41 percent, the addition amount of the filler is 42.59 percent, and the rest raw materials and the preparation method are the same as those in the example 1.
Comparative example 2
The difference from the example 1 is that the plastering-free putty spraying powder does not comprise aggregate, the addition amounts of the inorganic gel material and the filler are the sum of the addition amounts of the inorganic gel material, the aggregate and the filler in the example 1, and the inorganic gel material and the filler are distributed according to the proportion, namely the addition amount of the inorganic gel material is 47.80 percent, the addition amount of the filler is 46.20 percent, and the rest raw materials and the preparation method are the same as those in the example 1.
Comparative example 3
The difference from the example 1 is that the plastering-free putty spraying powder does not contain filler, the addition amounts of the inorganic gel material and the aggregate are the sum of the addition amounts of the inorganic gel material, the aggregate and the filler in the example 1, and the inorganic gel material and the aggregate are distributed according to the proportion, namely the addition amount of the inorganic gel material is 43.38 percent, the addition amount of the aggregate is 50.62 percent, and the rest raw materials and the preparation method are the same as those in the example 1.
Comparative example 4
The difference from the example 1 is only that the addition amount of the inorganic cementing material in the plastering-free machine putty powder is 15%, the addition amount of the aggregate is 35%, the addition amount of the filler is 44%, and the rest of the raw materials and the preparation method are the same as those in the example 1.
Comparative example 5
The difference from the example 1 is only that the addition amount of the inorganic cementing material in the plastering-free machine putty powder is 50%, the addition amount of the aggregate is 15%, the addition amount of the filler is 29%, and the rest of the raw materials and the preparation method are the same as those in the example 1.
The slurries prepared in examples 1 to 20 and comparative examples 1 to 5 were subjected to the following performance tests:
spraying workability: under the condition that the model of the fixed spraying machine is 'Wagner PC 830', the pumping smoothness of the machine-sprayed putty and the adhesion between the machine-sprayed putty and a wall body after being put on the wall are graded into 0-10 points, and the higher the grade is, the better the performance is;
scraping construction property: on the basis of referring to a test method of an index 'constructability' in JG/T157-2009, scoring is carried out by combining the tool withdrawal time and the smoothness degree during putty slurry construction, wherein the score is 0-10, and the higher the score is, the better the performance is;
flexibility: on the basis of referring to a test method of an index 'putty film flexibility' in JG/T157-2009, testing by a putty film flexibility tester, and grading flexibility;
the thimble resists the fracture: reference "highly permanent a new method for testing the crack resistance of building facing materials [ J ]. Industrial c, 2015(40): 139-", summarizing the data according to a number of examples, P-type putty is generally 0.12-0.16mm, R-type putty is generally 0.20-0.25mm, and T-type putty is generally 0.30-0.50 mm;
alkali efflorescence resistance: refer to JC/T1024-2007 test method for alkali resistance of color facing mortar;
pH value: referring to a test method of the pH value of the putty for the building interior in JC/T298-2010;
anti-sagging: molding the stirred putty slurry on a vertical wall surface by using mould frames (3mm, 5mm and 10mm) with different thicknesses, observing the anti-sagging effect of the putty slurry within 30min, and scoring to be 0-10 min, wherein the higher the score is, the better the performance is;
the other performance indexes are as follows: reference is made to JG/T157-2009 putty for building exterior walls.
The test results are shown in tables 1 and 2, respectively.
TABLE 1
TABLE 2
As can be seen from tables 1 and 2, the putty paste prepared by the invention has better bonding strength, initial drying cracking resistance, flexibility, thimble cracking resistance, water absorption, water resistance, alkali resistance, sagging resistance, spraying workability and batch scraping workability; as can be seen from the comparison between example 1 and examples 4 to 7, when the mass ratio of the silica sand powder to the ground calcium carbonate in the filler is not within the range defined in the present invention, or when any one of the silica sand powder and the ground calcium carbonate is absent in the filler, the adhesive strength, the initial drying crack resistance, the flexibility, the thimble crack resistance, the water absorption, the spray application property and the batch application property of the prepared putty slurry are reduced, that is, the compactness and the penetration resistance of the slurry are reduced; as can be seen from the comparison between example 1 and examples 8 to 11, when the mass ratio of either or both of metakaolin and Acksotubel theobromine inhibitor in the alkali-resistant auxiliary agent is out of the range defined in the present invention, the initial dry cracking resistance, flexibility, thimble cracking resistance, alkali resistance, anti-theobromine property and pH of the prepared putty paste are lowered; as can be seen from the comparison between example 1 and examples 12-15, when the mass ratio of either or both of the tile 5044N glue powder and the tile 8034H hydrophobic glue in the re-dispersible latex powder is out of the range defined by the invention, the flexibility, alkali resistance, water absorption and water resistance of the prepared putty paste are reduced; as is apparent from comparison between example 1 and examples 16 to 18, when the grain composition of the grains of the silica sand in the aggregate is out of the range defined in the present invention, the compactness and the bonding strength of the prepared putty paste are lowered; as can be seen from the comparison between example 1 and example 19, when other water reducing agents are used to replace the polycarboxylic acid water reducing agent, the water absorption and water resistance of the prepared putty paste are poor; as can be seen from the comparison between example 1 and example 20, when the polyester fiber is used in place of the wood fiber, the cracking resistance, sagging resistance, and spray workability and batch workability of the putty paste are reduced; as can be seen from the comparison between example 1 and comparative examples 1 to 3, when any one of the inorganic gel material, the aggregate and the filler is absent in the putty paste, the adhesive strength, the initial drying crack resistance, the flexibility, the thimble crack resistance, the water resistance and the water absorption of the prepared putty paste can be greatly reduced, that is, the compactness and the anti-permeability of the paste can be greatly reduced, thereby affecting the spraying workability and the batch scraping workability; as can be seen from the comparison of example 1 with comparative examples 4 to 5, when the amount of the inorganic cement, aggregate or filler added is out of the range defined in the present invention, the flexibility, alkali resistance, water resistance, adhesive strength, permeation resistance and denseness of the putty are affected; therefore, the putty slurry prepared by the invention has better bonding strength, initial drying anti-cracking performance, flexibility, thimble anti-cracking performance, water absorption, water resistance, alkali flooding resistance, sagging resistance, spraying workability and batch scraping workability.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (9)
1. The utility model provides a exempt from rendering machine and spout putty powder for building outer wall which characterized in that, exempt from rendering machine and spout putty powder includes the following component of weight percent:
25.0 to 35.0 percent of inorganic cementing material, 35.0 to 50.0 percent of aggregate, 10.0 to 30.0 percent of filler, 1.0 to 3.0 percent of alkali-resistant auxiliary agent, 3.0 to 5.0 percent of redispersible latex powder, 0.2 to 0.4 percent of hydroxypropyl methyl cellulose ether, 0.2 to 0.3 percent of anti-crack fiber, 0.1 to 0.3 percent of thixotropic agent, 0.05 to 0.15 percent of water reducing agent and 0.01 to 0.05 percent of hydrophobic agent;
the inorganic cementing material is Portland cement with the weight of more than P.W32.5;
the aggregate is quartz sand particles of 40-140 meshes;
the particle size distribution of the quartz sand particles is as follows:
the filler is the combination of quartz sand powder and heavy calcium carbonate; the mass ratio of the quartz sand powder to the heavy calcium carbonate is 1.5:1-2: 1; the mesh number of the quartz sand powder is 120-220 meshes; the mesh number of the heavy calcium carbonate is 200-325 meshes;
the alkali-resistant auxiliary agent is a combination of metakaolin and an Acksonobepan alkali inhibitor; the mass ratio of the metakaolin to the Acksonobeil panthain inhibitor is 1:1-1.5: 1;
the re-dispersible latex powder is a combination of flexible rubber powder and hydrophobic rubber powder; the mass ratio of the flexible rubber powder to the hydrophobic rubber powder is 3:1-5: 1;
the anti-crack fibers are wood fibers or polypropylene fibers;
the water reducing agent is a polycarboxylic acid water reducing agent.
2. The putty-spraying powder for a plastering-free machine as claimed in claim 1, wherein the flexible glue powder is watt 5044N glue powder.
3. The putty spraying powder for a plastering-free machine as claimed in claim 1, wherein the hydrophobic glue powder is Wake 8034H hydrophobic glue powder.
4. The preparation method of the putty powder for the plastering-free machine as claimed in any one of claims 1 to 3, wherein the preparation method comprises the following steps: and mixing an inorganic cementing material, aggregate, filler, an alkali-resistant auxiliary agent, redispersible latex powder, hydroxypropyl methyl cellulose ether, anti-crack fibers, a thixotropic agent, a water reducing agent and a water repellent to obtain the putty spraying powder for the plastering-free machine.
5. The putty spraying slurry for the plastering-free machine is characterized by comprising the putty spraying powder for the plastering-free machine and water according to any one of claims 1 to 3, wherein the mass ratio of the water to the putty spraying powder for the plastering-free machine is 0.24:1-0.28: 1.
6. The preparation method of the putty spraying slurry of the plastering-free machine as claimed in claim 5, wherein the preparation method comprises the following steps: and mixing water and the putty spraying powder of the plastering-free machine to obtain the putty spraying slurry of the plastering-free machine.
7. The method for preparing putty-spraying slurry for plastering-free machines according to claim 6, wherein the mixing temperature is 5-40 ℃.
8. The use of the plastering-free machine putty-spraying slurry as claimed in claim 5 in the mechanized construction of exterior walls of buildings.
9. The use according to claim 8, wherein the building exterior wall is an all-concrete exterior wall.
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| CN110655377B (en) * | 2019-11-20 | 2021-11-12 | 亚士漆(上海)有限公司 | Bi-component ground renovation filling material, bi-component ground renovation filling material slurry and preparation method and application thereof |
| CN112194436B (en) * | 2020-10-19 | 2022-02-08 | 广东博智林机器人有限公司 | Machine-sprayed putty material and preparation method thereof |
| CN114437581A (en) * | 2020-11-03 | 2022-05-06 | 湖南梨树园涂料有限公司 | Exterior wall putty for quick repairing or proofing |
| CN112194926B (en) * | 2020-11-12 | 2022-03-15 | 亚士漆(上海)有限公司 | Interior wall putty and preparation method and application thereof |
| CN113214701A (en) * | 2021-04-29 | 2021-08-06 | 南华太极莲水漆科技有限公司 | Putty ash for stone-like paint and preparation method thereof |
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