CN112876199B - Adhesive for sound-absorbing spraying material - Google Patents
Adhesive for sound-absorbing spraying material Download PDFInfo
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- CN112876199B CN112876199B CN202110148038.3A CN202110148038A CN112876199B CN 112876199 B CN112876199 B CN 112876199B CN 202110148038 A CN202110148038 A CN 202110148038A CN 112876199 B CN112876199 B CN 112876199B
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- absorbing
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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
- C04B28/34—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 cold phosphate binders
- C04B28/344—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 cold phosphate binders the phosphate binder being present in the starting composition solely as one or more phosphates
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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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
- C04B2111/52—Sound-insulating 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
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Building Environments (AREA)
Abstract
The invention discloses an adhesive for a novel sound-absorbing spraying material, which comprises the following components in parts by weight: 300 parts of monopotassium phosphate, 50-150 parts of sodium dihydrogen phosphate, 650 parts of magnesium oxide 550, 20-50 parts of portland cement, 10-20 parts of nano silicon powder, 7-10 parts of borax, 2.0-2.1 parts of a water reducing agent, 0.18-0.2 part of an expanding agent, 0.3-0.32 part of an antifoaming agent, 0.18-0.2 part of a thixotropic agent and 4-5 parts of rubber powder. According to the adhesive for the novel sound-absorbing spraying material, the potassium dihydrogen phosphate, the sodium dihydrogen phosphate, the magnesium oxide and the portland cement are mixed according to a certain proportion, and the active nano silicon powder, the specific functional auxiliary agent and the like are added to obtain the adhesive for the spraying material, so that the uniformity of spraying forming can be improved, a spraying layer can be quickly cured, the early strength, the bonding strength and the firmness, the water resistance, the fire resistance and the corrosion resistance are improved, and the performance of the sound-absorbing spraying material is greatly improved.
Description
Technical Field
The invention relates to the field of spraying materials, in particular to an adhesive for a sound-absorbing spraying material.
Background
The sound-absorbing spraying is to spray the inorganic fiber cotton and adhesive processed by special technique onto the surface of the sprayed object after instantaneous uniform mixing by using a special fiber spraying machine to form a product with a three-dimensional heat-insulating and sound-absorbing fiber layer with certain strength [1] . Meanwhile, the fireproof sound-absorbing wall has the functions of fire prevention, heat preservation, heat insulation, sound insulation and sound absorption; no toxicity, no odor, no radioactivity, antibiosis and no mildew; the product has various performances such as corrosion resistance, aging resistance, decoration and the like, and is a very excellent multifunctional environment-friendly energy-saving heat-insulating sound-absorbing product. The adhesive mainly plays a role in adhering inorganic materials, forming a reticular structure body and adhering to the surface of a building structure and corroding regional service environments.
The traditional adhesive for sound absorption spraying is mainly an aqueous material, and is easy to have the defects of non-uniform forming, long curing time, weak bonding force, weak waterproof, fireproof and anticorrosive capacities and the like when in use.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the adhesive for the sound-absorbing spraying material, which adopts a phosphate special gelling system and a portland cement mixed gelling material as a main body, and combines nano silicon powder, rubber powder, functional additives and the like, so that the uniformity, early strength, bonding strength and firmness, water resistance, fire resistance and corrosion resistance of spraying forming can be improved, and the performance of the sound-absorbing spraying material is greatly improved.
The invention is realized by the following technical scheme:
the adhesive for the sound-absorbing spraying material comprises the following components in parts by weight: 250 parts of monopotassium phosphate, 50-100 parts of sodium dihydrogen phosphate, 600 parts of magnesium oxide 550, 20-50 parts of Portland cement, 10-20 parts of nano silicon powder, 7-10 parts of borax, 2.0-2.1 parts of a water reducing agent, 0.18-0.2 part of an expanding agent, 0.3-0.32 part of an antifoaming agent, 0.18-0.2 part of a thixotropic agent and 4-5 parts of rubber powder.
Preferably, the composition comprises the following components in parts by weight: 250 parts of monopotassium phosphate, 70 parts of sodium dihydrogen phosphate, 600 parts of magnesium oxide, 50 parts of portland cement, 15 parts of nano silicon powder, 8 parts of borax, 2.0 parts of a water reducing agent, 0.2 part of an expanding agent, 0.3 part of an antifoaming agent, 0.2 part of a thixotropic agent and 5 parts of rubber powder. .
According to the adhesive, a phosphate special gelling system and a portland cement mixed gel material are used as main bodies, are prepared according to a certain proportion, and are added with active nano silicon powder, specific functional auxiliaries and the like to obtain the adhesive of the spraying material, so that the uniformity, early strength, bonding strength and firmness, water resistance, fire resistance and corrosion resistance of spraying forming can be improved, and the performance of the sound-absorbing spraying material is greatly improved.
Wherein, the main hydration product generated by hydration reaction of the phosphate special gelled material consisting of potassium dihydrogen phosphate, sodium dihydrogen phosphate and magnesium oxide after being mixed with water is MgKP0 4 ·6H 2 0 and MgNaP0 4 ·6H 2 0. Finally, a structural net which takes the residual MgO particles as the skeleton and is formed by mutually lapping hydration products is formed. Compared with ordinary portland cement and organic adhesives, the phosphate special gelling system has the advantages that the setting time can be shortened to several minutes, the early and later strength is excellent, the bonding force with the old concrete base surface is good, the volume shrinkage rate is one tenth of that of ordinary cement concrete, the phosphate special gelling system has good fireproof and anticorrosion performances, and in order to improve the waterproof performance of the phosphate special gelling system, PO42.5R-grade ordinary portland cement is compounded additionally, so that the waterproof performance of the phosphate gelling material can be obviously improved.
The nano silicon powder is compounded, and has the average particle size of less than 50 nm and very high activity, so that the nano silicon powder can participate in the secondary chemical reaction of a gelling system and the filling function of nano micropores, the internal defects of a spray coating can be greatly reduced, and the cohesion and the bonding force of the spray coating are improved.
The rubber powder adopts watt 5010; the tile 5010 is common mortar glue powder, has high bonding strength, can still maintain good bonding performance in a high-temperature environment, is applied to sound-absorbing spraying adhesives, has the advantages of strong adhesive force, water resistance, moisture resistance, easiness in construction and forming and the like compared with common carboxylic styrene-butadiene latex emulsion, epoxy resin, modified epoxy resin and the like, and has obvious advantage of adhesive force maintaining capability in severe environments such as humidity, high temperature and the like.
The water reducing agent is polycarboxylic acid powder.
The expanding agent adopts azodicarbonamide.
The defoaming agent is an organic silicon defoaming agent.
HPMC is adopted as the thixotropic agent.
The invention has the following beneficial effects:
1. according to the adhesive for the sound-absorbing spraying material, potassium dihydrogen phosphate, sodium dihydrogen phosphate, magnesium oxide and portland cement are mixed according to a certain proportion, and active nano silicon powder, specific functional auxiliaries and the like are added to obtain the adhesive for the spraying material, so that the uniformity of spraying forming can be improved, a spraying layer is rapidly cured, the early strength, the bonding strength and the firmness, and the water resistance, the fire resistance and the corrosion resistance are improved, and the performance of the sound-absorbing spraying material is greatly improved;
2. The adhesive for the sound-absorbing spraying material is prepared by compounding a phosphate special gelling system and ordinary portland cement, has the advantages that the setting time can be shortened to a few minutes compared with an organic adhesive, has excellent early and later strength, good bonding force with an old concrete base surface and volume shrinkage rate which is one tenth of that of ordinary cement concrete, has good fireproof and anticorrosion performances, but has poorer waterproof performance than ordinary portland cement. The system is additionally compounded with ordinary portland cement, so that the waterproof performance of the phosphate cementing material can be obviously improved.
3. The adhesive of the sound-absorbing spraying material is compounded by the nano silicon powder, and the nano silicon powder has the average particle size of less than 50 nanometers and very high activity, can participate in secondary chemical reaction of a gelling system and a nano micropore filling function, can greatly reduce the internal defects of a spraying layer, and improves the cohesion and the bonding force of the spraying layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limitations of the present invention.
Example 1
The invention relates to an adhesive for a sound-absorbing spraying material, which comprises the following components in parts by weight: 250 parts of monopotassium phosphate, 70 parts of sodium dihydrogen phosphate, 600 parts of magnesium oxide, 50 parts of portland cement, 15 parts of nano silicon powder, 8 parts of borax, 2.0 parts of a water reducing agent, 0.2 part of an expanding agent, 0.3 part of an antifoaming agent, 0.2 part of a thixotropic agent and 5 parts of rubber powder.
Example 2
The invention relates to an adhesive for a sound-absorbing spraying material, which comprises the following components in parts by weight: 230 parts of monopotassium phosphate, 80 parts of sodium dihydrogen phosphate, 620 parts of magnesium oxide, 35 parts of portland cement, 20 parts of nano silicon powder, 10 parts of borax, 2.1 parts of a water reducing agent, 0.21 part of an expanding agent, 0.3 part of an antifoaming agent, 0.2 part of a thixotropic agent and 4 parts of rubber powder.
Example 3
The invention relates to an adhesive for a sound-absorbing spraying material, which comprises the following components in parts by weight: 200 parts of monopotassium phosphate, 120 parts of sodium dihydrogen phosphate, 625 parts of magnesium oxide, 40 parts of portland cement, 10 parts of nano silicon powder, 10 parts of borax, 2.1 parts of a water reducing agent, 0.21 part of an expanding agent, 0.3 part of an antifoaming agent, 0.2 part of a thixotropic agent and 5 parts of rubber powder.
Comparative example
A certain commercially available aqueous spraying adhesive mainly comprises EVA emulsion with solid content of 15%, and can be directly used during spraying.
The adhesives of examples 1 to 3 and comparative example were mixed with inorganic fiber cotton, respectively, and sprayed on a concrete wall surface to form a fiber spray coating, and after the formation was completed, the performance of the spray coating was tested, and the results are shown in table 1 below.
TABLE 1 spray Properties of the Adhesives
| Stretch bonding Strength, kPa | Waterproof performance (humidity ring with humidity more than or equal to 90 percent) In the ambient, 180d adhesion Strength, kPa) | Anti-corrosion performance (humidity is more than or equal to 90 percent in humid environment At 180 days, with or without mildew and black specks) | Fire protection Performance of | Hydrophobic Rate% | Shaping of Uniformity Property of (2) | Curing The time of day is, h | volume density Degree, kg/m ³ | |
| Fruit of Chinese wolfberry Applying (a) to Example 1 | 30.3 | 26.5 | No mildew and black spot | Class A | 99 | Uniformity | 0.5 | 255 |
| Fruit of Chinese wolfberry Applying (a) to Example 2 | 29.5 | 25.7 | No mildew and black spot | Class A | 98 | Uniformity | 0.5 | 250 |
| Fruit of Chinese wolfberry Applying (a) to Example 3 | 32.2 | 28.9 | No mildew and black spot | Class A | 98 | Uniformity | 0.5 | 263 |
| To pair Ratio of Example (b) | 2.8 | 1 (local abscission) | Mildew and a large number of black spots | Class B | 75 | Uniformity | 30 | 120 |
As can be seen from Table 1, when the adhesive prepared in the embodiments 1 to 3 of the present invention is used for fiber spraying, the adhesive can be rapidly cured within 0.5 hour, the curing time is short, the molding uniformity of the adhesive can be ensured, the bonding strength of the fiber coating is significantly higher than that of the existing aqueous adhesive, and the fiber coating still keeps good bonding strength after being used for 180 days in a humid environment with the humidity of more than or equal to 90%, and can reach 87 to 89% of the original strength, and has excellent early and later strength, good bonding strength with the old concrete base surface, no mildew of the coating and no black spots, while the coating sprayed by using the commercially available adhesive in the comparative example has the curing time far longer than that of the coating sprayed by the adhesive of the present invention, and the local shedding occurs in the humid environment, and the mildew of the coating and a large amount of black spots occur, the adhesive of the invention has good waterproof and anticorrosion performances.
The fireproof performance of the fiber coating sprayed by the adhesive reaches A grade, and the hydrophobic rate of the coating is up to more than 98%, so that the fiber coating sprayed by the adhesive has good waterproof and permeability capabilities; meanwhile, the density of the fiber coating sprayed by the adhesive in the embodiments 1-3 of the invention is more than twice of that of the comparative example, because the adhesive can participate in the secondary chemical reaction of a gelling system and the filling function of nano micropores, the internal defects of the spraying layer are greatly reduced, and the cohesive force and the adhesive force of the spraying layer are improved.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. The adhesive for the sound-absorbing spraying material is characterized by comprising the following components in parts by weight: 300 parts of monopotassium phosphate, 50-150 parts of sodium dihydrogen phosphate, 650 parts of magnesium oxide 550, 20-50 parts of portland cement, 10-20 parts of nano silicon powder, 7-10 parts of borax, 2.0-2.1 parts of a water reducing agent, 0.18-0.2 part of an expanding agent, 0.3-0.32 part of an antifoaming agent, 0.18-0.2 part of a thixotropic agent and 4-5 parts of rubber powder; the water reducing agent is polycarboxylic acid powder, the expanding agent is azodicarbonamide, the defoaming agent is an organic silicon defoaming agent, the thixotropic agent is HPMC, and the rubber powder is watt 5010.
2. The adhesive of the sound-absorbing spray material according to claim 1, comprising the following components in parts by weight: 250 parts of monopotassium phosphate, 70 parts of sodium dihydrogen phosphate, 600 parts of magnesium oxide, 50 parts of portland cement, 15 parts of nano silicon powder, 8 parts of borax, 2.0 parts of a water reducing agent, 0.2 part of an expanding agent, 0.3 part of an antifoaming agent, 0.2 part of a thixotropic agent and 5 parts of rubber powder.
3. The adhesive for the sound-absorbing spray material as claimed in claim 1, wherein the magnesium oxide is dead-burned magnesium oxide obtained by calcining at a high temperature of 1700 ℃ and grinding, the specific surface area is 450-.
4. The adhesive for sound-absorbing coating materials according to claim 1, wherein the portland cement is p. O42.5R-grade portland cement.
5. The adhesive for a sound-absorbing coating material according to claim 1, wherein the nano silicon powder has an average particle size of less than 50 nm, a silica content of 95% or more, and a high activity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110148038.3A CN112876199B (en) | 2021-02-03 | 2021-02-03 | Adhesive for sound-absorbing spraying material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110148038.3A CN112876199B (en) | 2021-02-03 | 2021-02-03 | Adhesive for sound-absorbing spraying material |
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| Publication Number | Publication Date |
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| CN112876199A CN112876199A (en) | 2021-06-01 |
| CN112876199B true CN112876199B (en) | 2022-09-13 |
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| CN202110148038.3A Active CN112876199B (en) | 2021-02-03 | 2021-02-03 | Adhesive for sound-absorbing spraying material |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS548215B2 (en) * | 1972-11-04 | 1979-04-13 | ||
| CN107418451B (en) * | 2016-05-23 | 2020-09-22 | 伦慧东 | Normal-temperature curing hydrated adhesive based on inorganic phosphate and preparation method thereof |
| CN110698890A (en) * | 2019-09-30 | 2020-01-17 | 武汉工程大学 | Inorganic high-temperature-resistant heat-conducting anticorrosive paint and preparation and use methods thereof |
| CN111116133A (en) * | 2019-12-25 | 2020-05-08 | 三一筑工科技有限公司 | Concrete interface agent and surface treatment method of laminated member |
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