CN112011240A - Sound insulation coating for building floor and preparation method thereof - Google Patents

Sound insulation coating for building floor and preparation method thereof Download PDF

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CN112011240A
CN112011240A CN202010923934.8A CN202010923934A CN112011240A CN 112011240 A CN112011240 A CN 112011240A CN 202010923934 A CN202010923934 A CN 202010923934A CN 112011240 A CN112011240 A CN 112011240A
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sound insulation
acrylic
emulsion
building floor
insulation coating
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邓琦
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Huizhou Baisheng Acoustic Technology Co ltd
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Huizhou Baisheng Acoustic Technology Co ltd
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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
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • 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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2265—Oxides; Hydroxides of metals of iron
    • C08K2003/2272—Ferric oxide (Fe2O3)
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
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    • C08K2201/005—Additives being defined by their particle size in general
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
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Abstract

The invention discloses a sound insulation coating for a building floor and a preparation method thereof. The sound insulation coating for the building floor comprises the following components in percentage by weight: 8-15% of acrylic emulsion, 5-7% of floating bead, 38-45% of non-stone mineral wool, 3-5% of mica powder, 1-5% of nitrile rubber powder, 30-35% of water and 1% of auxiliary material; wherein the acrylic emulsion is a compound emulsion of acrylic elastic emulsion and acrylic styrene-acrylic emulsion according to the mass ratio of 11-15: 6-9. The sound insulation coating for the building floor takes the compound emulsion of the acrylic acid elastic emulsion and the acrylic styrene-acrylic emulsion as the basic glue emulsion of the coating, and is matched with the components of the floating bead, the stone-free mineral wool, the mica powder, the nitrile rubber powder and the like, so that the sound insulation coating has good sound insulation and shock absorption effects and also has excellent water resistance. The preparation method provided by the invention is mild in condition and low in energy consumption, and can be used for effectively preparing and producing the sound insulation coating for the building floor slab in a large scale.

Description

Sound insulation coating for building floor and preparation method thereof
Technical Field
The invention relates to the technical field of building coatings, in particular to a sound insulation coating for a building floor and a preparation method thereof.
Background
The noise is the sound which prevents people from normally resting, studying and working and interferes with the sound to be heard. In today's society, noise has been listed as an important pollution. Noise pollution easily causes troubles and harm to the health and daily life of people, causes dysphoria and dysthymia of people and is not beneficial to the physical and mental health of people.
In the advanced development of cities, commercial houses are more and more, and the demand of people on the commercial houses is higher and higher. In commercial houses, due to the low density between buildings, tight connection between floors and low floor thickness, small sounds or vibrations such as walking upstairs, chopping dishes, dragging stools, jumping, chasing, speaking loudly and the like are often serious noise pollution. The building materials of the building are used for sound insulation, so that sound insulation and noise reduction between floors are formed, and the noise pollution of commercial houses can be effectively and fundamentally reduced.
The sound-insulation and shock-absorption coating for the floor slab is a sound-insulation and noise-reduction material coated on the inner layer of the floor slab in the floor slab forming process, can effectively reduce noise transmission between the floor slabs under the conditions of ensuring the thickness of the floor slab, ensuring the rigidity of the floor slab and reducing the load of the floor slab, and provides a quiet and comfortable living environment for people.
However, the current commercial soundproof and damping paint for floor slabs is mainly based on a large amount of rubber substances to perform cushioning and sound insulation and ensure damping elasticity, and the current commercial soundproof and damping paint for floor slabs does not have a water-resistant effect. For example, in patent application CN2019112768984, the main vibration and noise reduction components of the water-based sound insulation coating for ground sound insulation and vibration reduction are rubber particles and rubber fibers, the content of the rubber particles and the rubber fibers reaches more than 12%, the cost of the coating is greatly increased, and the coating does not have a water-resistant effect. As disclosed in patent application CN2017112455209, a vibration-damping and sound-insulating coating for floor slab mainly comprises pure acrylate emulsion, polyurethane emulsion, talc powder, light calcium carbonate, silane coupling agent modified cork particles and thickener, and the vibration-damping and sound-insulating coating is not made of rubber material and has a short surface drying time, but has poor elasticity after drying, poor rebound resilience after vibration damping, and unfavorable quality of floor slab; moreover, the damping and sound-insulating coating also has no water-resistant effect.
In addition, the acrylic elastic emulsion is a copolymer of acrylic ester and organic silicon, has excellent rebound resilience, and can endow the coating with better elasticity when being used in the coating; the acrylic styrene-acrylic emulsion is emulsion formed by emulsion copolymerization of styrene and acrylic ester monomers, has good adhesive force, transparent adhesive film and good water resistance, oil resistance, heat resistance and aging resistance. However, the acrylic elastic emulsion and the acrylic styrene-acrylic emulsion have obvious defects when being separately used in the coating. In the field of architectural coatings, the acrylic elastic emulsion and the acrylic styrene-acrylic emulsion are still used in the coatings independently based on respective characteristics of the acrylic elastic emulsion and the acrylic styrene-acrylic emulsion, and the compounding of the acrylic elastic emulsion and the acrylic styrene-acrylic emulsion always has irreconcilable contradiction, such as poor viscosity caused by excessive acrylic elastic emulsion and poor damping elasticity caused by excessive acrylic styrene-acrylic emulsion. Therefore, the two materials are not effectively compounded and comprehensively used at present, and the sound-insulating and shock-absorbing coating for the floor after being effectively compounded and having the functions of effectively insulating sound, absorbing shock and resisting water is not used.
Disclosure of Invention
The invention aims to provide a sound insulation coating for building floor slabs, aiming at the defects and the defects that the existing sound insulation and shock absorption coating for the floor slabs is mainly based on rubber substances for shock absorption and noise reduction and has no water resistance. The sound insulation coating for the building floor takes the compounded emulsion of the acrylic elastic emulsion and the acrylic styrene-acrylic emulsion according to a specific mass ratio as the basic glue emulsion of the coating, and is matched with floating beads, stone-free mineral wool, mica powder, nitrile rubber powder and other components, so that the sound insulation coating has a good sound insulation and shock absorption effect and also has excellent water resistance.
The invention also aims to provide a method for preparing the sound insulation coating for the building floor.
The purpose of the invention is realized by the following technical scheme.
A sound insulation coating for building floor slabs comprises the following components in percentage by weight:
8-15% of acrylic emulsion, 5-7% of floating bead, 38-45% of non-stone mineral wool, 3-5% of mica powder, 1-5% of nitrile rubber powder, 30-35% of water and 1% of auxiliary material;
the acrylic emulsion is a compound emulsion of acrylic elastic emulsion and acrylic styrene-acrylic emulsion; the auxiliary materials comprise a defoaming agent, a preservative, a thickening agent and a pigment.
In a preferred embodiment, the acrylic emulsion is a compound emulsion of acrylic elastic emulsion and acrylic styrene-acrylic emulsion according to a mass ratio of 11-15: 6-9. Within the mass proportion range, the acrylic elastic emulsion and the acrylic styrene-acrylic emulsion can achieve good compounding property, the performances of the acrylic elastic emulsion and the acrylic styrene-acrylic emulsion can realize synergistic combination, a synergistic effect is generated, the viscoelasticity is good, and the coating is endowed with excellent sound insulation, shock absorption, noise reduction and water resistance.
In a more preferred embodiment, the acrylic emulsion is a compound emulsion of acrylic elastic emulsion and acrylic styrene-acrylic emulsion according to a mass ratio of 13: 7. Under the mass proportion, the matching synergistic effect of the acrylic elastic emulsion and the acrylic styrene-acrylic emulsion is optimal, and the excellent sound insulation, shock absorption, noise reduction and water resistance effects of the coating are also optimal.
In a preferred embodiment, the bulk density of the floating bead is 450-600kg/m3The particle size is 100 meshes. The floating beads are particles of hollow spheres, are thin and hollow in wall, and have good damping effect; the floating beads within the volume weight range and the particle size can provide good sound insulation and shock absorption effects, can be well compatible with components such as acrylic emulsion in the coating, and avoids the adhesive property of the coating from being damaged due to floating particles.
In a preferred embodiment, the mineral wool without stone is mineral wool with heavy metal content lower than 5mg/kg, the fiber diameter is not more than 9 μm, the slag ball content is not more than 10 wt%, and the volume weight is 60-100kg/m3. The mineral wool has good sound insulation and shock absorption effects, can be well compatible in the coating under the condition to play the roles of shock absorption and noise reduction, and the heavy metal contentThe amount of the coating is safe and environment-friendly to use.
In a preferred embodiment, the particle size of the mica powder is 150-200 meshes. The mica powder has good elasticity and toughness, and has the characteristics of insulativity, high temperature resistance, acid and alkali resistance, corrosion resistance, strong adhesive force and the like; the mica powder with the particle size within the range is selected, and can be well compatible in the coating, so that the vibration absorption and noise reduction effects can be better played.
In a preferred embodiment, the mass ratio of the defoaming agent, the preservative, the thickener and the pigment is 2.0-2.5:1.5-2.0:2: 4.
In a more preferred embodiment, the mass ratio of the antifoaming agent, the preservative, the thickener and the pigment is 2.5:1.5:2: 4.
In a preferred embodiment, the thickener is hydroxyethyl cellulose.
In a preferred embodiment, the pigment is ferric oxide.
The method for preparing the sound insulation coating for the building floor slab comprises the following steps:
(1) taking part of water, adding a thickening agent, and stirring and dispersing uniformly at the rotating speed of 800-;
(2) mixing the acrylic emulsion with the rest water, and stirring and mixing uniformly at the rotating speed of 25-30 r/min; adding a defoaming agent and a preservative, and continuously stirring and uniformly mixing at the rotating speed of 25-30r/min to obtain a mixed solution;
(3) adding the thickener dispersed in the step (1) into the mixed solution in the step (2), and continuously stirring and uniformly mixing at the rotating speed of 25-30 r/min;
(4) then adding the floating beads, the stone-free mineral wool and the mica powder, and continuously stirring and mixing for 1.0-1.5h at the rotating speed of 25-30 r/min;
(5) and adding the pigment to perform color mixing, and obtaining the sound insulation coating for the building floor.
In a preferred embodiment, in the step (4), the floating beads, the stone-free mineral wool and the mica powder are uniformly added in 3-5 batches, and the adding process is as follows:
adding the stone-free mineral wool, and then adding the floating beads and the mica powder into a batch of feeding materials; after the feeding of one batch is finished, continuously stirring and uniformly mixing, and then feeding the next batch.
In a preferred embodiment, in step (5), the pigment is added in 2-3 batches.
The sound insulation coating for the building floor slab is used for noise reduction and sound insulation of a building, is synchronously finished with surface decoration of the building when in use, and is coated in an inner layer of the surface of a wall body. Specifically, when the surface of a blank building is decorated, the coating is directly smeared on the surface of a floor slab of the blank, then cement mortar is smeared to cover the coating, and finally, ceramic tiles or cement can be pasted on the cement mortar layer.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the sound insulation coating for the building floor takes the compound emulsion of the acrylic acid elastic emulsion and the acrylic acid styrene-acrylic emulsion as the basic glue emulsion of the coating, under the corresponding specific mass ratio, the acrylic acid elastic emulsion and the acrylic acid styrene-acrylic emulsion have synergistic interaction, so that the compound emulsion has excellent damping elasticity and water resistance, the coating is endowed with good sound insulation, damping and water resistance effects, and the bonding strength of the coating is ensured.
(2) In the sound insulation coating for the building floor slab, the acrylic acid elastic emulsion and the acrylic acid styrene-acrylic emulsion have sound insulation, shock absorption and noise reduction effects, and floating beads, stone-free mineral wool and the like are used in a compatible manner, so that the coating can absorb noise and has better sound insulation and noise reduction functions; moreover, the floating beads are hollow spheres, the wall is thin and hollow, the sound-absorbing effect is good, the floating beads are compatible with the non-mineral wool, the mica powder and the butyronitrile rubber powder for use, and the non-mineral wool, the mica powder and the butyronitrile rubber powder have good damping and shock-absorbing effects, so that the formed coating layer has a more excellent shock-absorbing and buffering effect, the noise pollution caused by vibration can be further reduced, and the sound-insulating coating for the building floor has a dual noise-reducing effect.
(3) In the sound insulation coating for the building floor slab, the floating beads, the stone-free mineral wool, the mica powder and the like which are used in a compatible manner have good heat insulation and fire resistance functions, strong fire resistance and high fire resistance, the combustion performance reaches the GB 8624A (A2) level requirement, and the spread of fire can be effectively prevented; meanwhile, the floating beads, the stone-free mineral wool, the mica powder, the nitrile rubber powder and the like are used in compatibility, so that the coating has good insulating property and wear resistance.
(4) In the sound insulation coating for the building floor slab, the stone-free mineral wool is adopted as the sound absorption and shock absorption material, and the heavy metal content in the stone-free mineral wool is low and harmless; in addition, the acrylic emulsion compounded by the acrylic elastic emulsion and the acrylic styrene-acrylic emulsion generates few harmful volatile substances when in use, and cannot generate harm to human bodies; therefore, the sound insulation coating for the building floor slab does not generate a large amount of toxic and harmful substances in the using process, is green and environment-friendly, and has high use safety.
(5) The preparation method provided by the invention is mild in condition and low in energy consumption, and can be used for effectively preparing and producing the sound insulation coating for the building floor slab in a large scale.
Drawings
FIG. 1 is a graph showing a measurement of the sound insulation coating for a building floor in example 1;
FIG. 2 is a graph showing a measurement of the sound insulation coating for a building floor in comparative example 1;
FIG. 3 is a graph showing a measurement of the sound insulation coating for a building floor in comparative example 2;
FIG. 4 is a graph showing a measurement of the sound insulation coating for a building floor in comparative example 3.
Detailed Description
The technical solution of the present invention is further described in detail with reference to the following specific examples, but the scope and implementation of the present invention are not limited thereto. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the specific examples, unless otherwise specified, the technical means used are in accordance with the conventional means employed by those skilled in the art of the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the following examples, the sources of the raw materials used are as follows:
acrylic elastic emulsion, Guangzhou Heng and Fine chemical Co., Ltd., 208 acrylic emulsion.
Acrylic styrene-acrylic emulsion, Guangzhou Henghe Fine chemical Co., Ltd., 162 styrene-acrylic emulsion.
The defoaming agent is prepared from Defeng DF-8205, Dongguan Defeng defoaming agent Co., Ltd, and the content of active matters is more than or equal to 30%.
Antiseptic, denuda chemical ltd, paint disinfectant, preservative DL-T201.
Example 1
The sound insulation coating for the building floor slab comprises the following components in percentage by weight:
10 percent of acrylic emulsion, 6 percent of floating bead, 42 percent of mineral wool without stone, 5 percent of mica powder, 3.5 percent of nitrile rubber powder, 32.5 percent of water, 0.20 percent of defoaming agent, 0.20 percent of preservative, 0.2 percent of hydroxyethyl cellulose and 0.4 percent of ferric oxide.
Wherein the acrylic emulsion is a compound emulsion of acrylic elastic emulsion and acrylic styrene-acrylic emulsion according to the mass ratio of 13: 7.
The volume weight of the floating bead is 550kg/m3The particle size is 100 meshes. The mineral wool without stone is mineral wool with heavy metal content lower than 5mg/kg, the fiber diameter is not more than 9 μm, the slag ball content is not more than 10 wt%, and the volume weight is 70kg/m3. The particle size of the mica powder is 180 meshes.
The dry density of the sound insulation coating for the building floor slab of the embodiment is 514kg/m3。
The preparation method of the sound insulation coating for the building floor comprises the following specific steps:
(1) taking water with the weight 45 times that of the thickening agent, adding the thickening agent, and stirring and dispersing uniformly at the rotating speed of 1200r/min for later use;
(2) mixing the acrylic emulsion with the rest water, and stirring and mixing uniformly at the rotating speed of 25 r/min; adding a defoaming agent and a preservative, and continuously stirring and uniformly mixing at the rotating speed of 25r/min to obtain a mixed solution;
(3) adding the thickener dispersed in the step (1) into the mixed solution in the step (2), and continuously stirring and uniformly mixing at the rotating speed of 25 r/min;
(4) then adding the floating beads, the stone-free mineral wool and the mica powder; wherein, 3 batches of add are equallyd divide equally to floating pearl, no stone mineral wool and mica powder, specific: adding the stone-free mineral wool, and then adding the floating beads and the mica powder into a batch of feeding materials; after the feeding of one batch is finished, continuously stirring and uniformly mixing, and then feeding the next batch.
After the feeding of the floating beads, the stone-free mineral wool and the mica powder is finished, stirring and mixing are continuously carried out for 1.5h at the rotating speed of 25 r/min.
(5) And after the pigments are added and the colors are adjusted, adding the pigments in 3 batches to obtain the sound insulation coating for the building floor.
Example 2
The sound insulation coating for the building floor slab comprises the following components in percentage by weight:
8% of acrylic emulsion, 7% of floating beads, 45% of non-mineral wool, 4% of mica powder, 1% of nitrile rubber powder, 34% of water, 0.25% of defoaming agent, 0.15% of preservative, 0.2% of hydroxyethyl cellulose and 0.4% of ferric oxide.
Wherein the acrylic emulsion is a compound emulsion of acrylic elastic emulsion and acrylic styrene-acrylic emulsion according to the mass ratio of 11: 9.
The volume weight of the floating bead is 550kg/m3The particle size is 100 meshes. The mineral wool without stone is mineral wool with heavy metal content lower than 5mg/kg, the fiber diameter is not more than 9 mu m, the slag ball content is not more than 10 wt%, and the volume weight is 80kg/m3. The particle size of the mica powder is 200 meshes.
The dry density of the sound insulation coating for the building floor slab of the embodiment is 526kg/m3。
The preparation method of the sound insulation coating for the building floor comprises the following specific steps:
(1) taking water 40 times the weight of the thickening agent, adding the thickening agent, and stirring and dispersing uniformly at the rotating speed of 800r/min for later use;
(2) mixing the acrylic emulsion with the rest water, and stirring and mixing uniformly at the rotating speed of 25 r/min; adding a defoaming agent and a preservative, and continuously stirring and uniformly mixing at the rotating speed of 25r/min to obtain a mixed solution;
(3) adding the thickener dispersed in the step (1) into the mixed solution in the step (2), and continuously stirring and uniformly mixing at the rotating speed of 25 r/min;
(4) then adding the floating beads, the stone-free mineral wool and the mica powder; wherein, 3 batches of add are equallyd divide equally to floating pearl, no stone mineral wool and mica powder, specific: adding the stone-free mineral wool, and then adding the floating beads and the mica powder into a batch of feeding materials; after the feeding of one batch is finished, continuously stirring and uniformly mixing, and then feeding the next batch.
After the feeding of the floating beads, the stone-free mineral wool and the mica powder is finished, stirring and mixing are continuously carried out for 1.0h at the rotating speed of 25 r/min.
(5) And after the pigments are added and the colors are adjusted, adding the pigments in 3 batches to obtain the sound insulation coating for the building floor.
Example 3
The sound insulation coating for the building floor slab comprises the following components in percentage by weight:
12 percent of acrylic emulsion, 5 percent of floating bead, 38 percent of mineral wool without stone, 4 percent of mica powder, 5 percent of nitrile rubber powder, 35 percent of water, 0.22 percent of defoaming agent, 0.18 percent of preservative, 0.2 percent of hydroxyethyl cellulose and 0.4 percent of ferric oxide.
Wherein the acrylic emulsion is a compound emulsion of acrylic elastic emulsion and acrylic styrene-acrylic emulsion according to the mass ratio of 15: 8.
The volume weight of the floating bead is 600kg/m3The particle size is 100 meshes. The mineral wool without stone is mineral wool with heavy metal content lower than 5mg/kg, the fiber diameter is not more than 9 mu m, the slag ball content is not more than 10 wt%, and the volume weight is 100kg/m3. The particle size of the mica powder is 150 meshes.
The dry density of the sound insulation coating for the building floor slab of the embodiment is 507kg/m3。
The preparation method of the sound insulation coating for the building floor comprises the following specific steps:
(1) taking water with the weight 50 times of that of the thickening agent, adding the thickening agent, and stirring and dispersing uniformly at the rotating speed of 1500r/min for later use;
(2) mixing the acrylic emulsion with the rest water, and stirring and mixing uniformly at the rotating speed of 25 r/min; adding a defoaming agent and a preservative, and continuously stirring and uniformly mixing at the rotating speed of 25r/min to obtain a mixed solution;
(3) adding the thickener dispersed in the step (1) into the mixed solution in the step (2), and continuously stirring and uniformly mixing at the rotating speed of 25 r/min;
(4) then adding the floating beads, the stone-free mineral wool and the mica powder; wherein, float pearl, no stone mineral wool and mica powder equally divide 4 batches and add, specific: adding the stone-free mineral wool, and then adding the floating beads and the mica powder into a batch of feeding materials; after the feeding of one batch is finished, continuously stirring and uniformly mixing, and then feeding the next batch.
After the feeding of the floating beads, the stone-free mineral wool and the mica powder is finished, stirring and mixing are continuously carried out for 1.5h at the rotating speed of 25 r/min.
(5) And after the pigments are added and the colors are adjusted, adding the pigments in 2 batches to obtain the sound insulation coating for the building floor.
Example 4
The sound insulation coating for the building floor slab comprises the following components in percentage by weight:
15% of acrylic emulsion, 6% of floating beads, 42% of mineral wool without stone, 3% of mica powder, 3% of nitrile rubber powder, 30% of water, 0.25% of defoaming agent, 0.15% of preservative, 0.2% of hydroxyethyl cellulose and 0.4% of ferric oxide.
Wherein the acrylic emulsion is a compound emulsion of acrylic elastic emulsion and acrylic styrene-acrylic emulsion according to the mass ratio of 14: 9.
The volume weight of the floating bead is 450kg/m3The particle size is 100 meshes. The mineral wool without stone is mineral wool with heavy metal content lower than 5mg/kg, the fiber diameter is not more than 9 mu m, the slag ball content is not more than 10 wt%, and the volume weight is 60kg/m3. The particle size of the mica powder is 180 meshes.
The sound insulation coating for the building floor of the embodimentThe dry density was 517kg/m3。
The preparation method of the sound insulation coating for the building floor comprises the following specific steps:
(1) taking water with the weight 45 times that of the thickening agent, adding the thickening agent, and stirring and dispersing uniformly at the rotating speed of 1000r/min for later use;
(2) mixing the acrylic emulsion with the rest water, and stirring and mixing uniformly at the rotating speed of 30 r/min; adding a defoaming agent and a preservative, and continuously stirring and uniformly mixing at the rotating speed of 30r/min to obtain a mixed solution;
(3) adding the thickener dispersed in the step (1) into the mixed solution in the step (2), and continuously stirring and uniformly mixing at the rotating speed of 30 r/min;
(4) then adding the floating beads, the stone-free mineral wool and the mica powder; wherein, it equallys divide 5 batches to add to float pearl, no stone mineral wool and mica powder, and is specific: adding the stone-free mineral wool, and then adding the floating beads and the mica powder into a batch of feeding materials; after the feeding of one batch is finished, continuously stirring and uniformly mixing, and then feeding the next batch.
After the feeding of the floating beads, the stone-free mineral wool and the mica powder is finished, stirring and mixing are continuously carried out for 1.0h at the rotating speed of 30 r/min.
(5) And after the pigments are added and the colors are adjusted, adding the pigments in 3 batches to obtain the sound insulation coating for the building floor.
Comparative example 1
Compared with the embodiment 1, in the sound insulation coating for the building floor slab of the comparative example, the acrylic emulsion is a compound emulsion of acrylic elastic emulsion and acrylic styrene-acrylic emulsion according to the mass ratio of 3: 1.
Comparative example 2
Compared with the embodiment 1, in the sound insulation coating for the building floor slab of the comparative example, the acrylic emulsion is a compound emulsion of acrylic elastic emulsion and acrylic styrene-acrylic emulsion according to the mass ratio of 1: 2.
Comparative example 3
Compared with the example 1, the sound insulation coating for the building floor slab of the comparative example does not contain nitrile rubber powder.
The sound insulation coating for the building floor of comparative examples 1 to 3 was prepared according to the preparation method of example 1.
Performance testing
The sound insulation coatings for the building floors of the embodiments 1 to 4 and the sound insulation coatings for the building floors of the comparative examples 1 to 3 are inspected, and the inspection contents comprise combustion performance, impact sound improvement amount, harmful volatile substances and heavy metal content, wear resistance, water resistance and bonding strength.
1. Test of Combustion Performance
Test objects: the sound insulation coating for the building floor in the embodiment 1-4 is compared with the sound insulation coating for the building floor in the comparative example 1-3.
The test method comprises the following steps: the acoustic insulation coating for the building floor delivered for inspection is measured according to the detection methods of GB/T14402-2007 measurement of combustion heat value of building materials and products and GB/T11785-2005 method of measuring radiant heat source of combustion performance of flooring materials, and the judgment is carried out according to the basis of GB 8624-2012 classification of combustion performance of building materials and products.
Detection unit: shenzhen city institute for measuring quality.
The results of the determination are shown in table 1.
TABLE 1 test results of combustion properties of sound-insulating coating for building floor in examples 1 to 4 and comparative examples 1 to 3
Figure BDA0002667680950000051
Figure BDA0002667680950000061
The results in table 1 show that the measured combustion performance meets the requirements of the GB 8624A (A2) grade, the smoke-producing characteristic grade reaches the s1 grade, and the sound-insulating coating for the building floor disclosed by the invention has good flame-retardant and fireproof effects and high use fireproof safety.
2. Impact sound improvement test
Test objects: the sound insulation coating for the building floor in the embodiment 1 is the sound insulation coating for the building floor in the comparative examples 1-3.
The test method comprises the following steps: part 7 of Acoustic building and construction Member Acoustic measurement according to GB/T19889.7-2005: the detection method of the site measurement of floor impact sound insulation measures the sound insulation coating for the building floor to be inspected. And the judgment is carried out according to the basis of GB 50118-2010 civil building sound insulation design specifications.
And (3) testing conditions are as follows: the thickness of the sound insulation coating for the building floor slab is 3mm, the thickness of the reinforced concrete floor slab is 100mm, the floor area is 9.38 square meters, the net height of a room of a receiving chamber is 2.89m, and the volume of the room of the receiving chamber is 29.29m3And when in test, the door and the window are closed, and the engineering unit is a Hengyuelongtai.
Detection unit: shenzhen, Jian and research detection Limited.
The sound insulation measurement curve of the sound-insulating, shock-absorbing and water-resistant paint of example 1 is shown in fig. 1, and the recorded sound insulation measurement results are shown in table 2.
TABLE 2 floor impact sound insulation detection record of the sound insulation coating for building floor of example 1
1/3 octave center frequency (Hz) 100 125 160 200 250 315 400 500
Normalized impact sound pressure level L' nT (dB) 53.9 66.3 65.2 70.5 71.3 72.9 70.6 71.5
1/3 octave center frequency (Hz) 630 800 1k 1.25k 1.6k 2k 2.5k 3.15k
Normalized impact sound pressure level L' nT (dB) 72.6 70.9 69.7 67.5 64.8 60.3 53.9 46.6
As can be seen from the results shown in Table 2 and FIG. 1, the measured weighted normalized impact sound pressure level L' nTw is 69dB, and the sound insulation performance of the floor impact sound meets the sound insulation standard requirement of the floor impact sound between living rooms of the residential buildings in GB 50118-2010 (the weighted normalized impact sound pressure level is less than or equal to 75dB) design Specification for civil buildings.
Referring to fig. 2 to 4, the weighted standardized impact sound pressure levels L' nTw of the sound-insulating coatings for building floors of comparative examples 1 to 3 measured under the same conditions are respectively 76dB, 78dB and 78dB, which do not satisfy the standard requirement of floor impact sound insulation between living rooms of residential buildings in GB 50118 plus 2010 civil building sound insulation design specification (weighted standardized impact sound pressure level is less than or equal to 75 dB).
Therefore, the sound insulation coating for the building floor slab has good sound insulation and noise reduction effects, particularly has excellent sound insulation and shock absorption and noise reduction double noise reduction effects on impact sound of the floor slab, and can effectively insulate sound between floors when used between the floor slabs of the floors, thereby effectively avoiding noise transmission between the floors and being beneficial to building a quiet and comfortable room environment for people.
3. Detection of harmful volatile substances and heavy metals
Test objects: the sound insulation coating for the building floor in the embodiment 1-4 is compared with the sound insulation coating for the building floor in the comparative example 1-3.
Detection unit: guangdong institute for quality supervision and inspection of products.
The judgment is carried out according to the basis of GB 18582-.
Table 3 detection results of harmful volatile substances and heavy metals in sound insulation coating for building floor in examples 1-4 and comparative examples 1-3
Figure BDA0002667680950000071
The detection results in table 3 show that all the detection items meet the standard requirements of GB 18582-.
4. Abrasion resistance test
Test objects: the sound insulation coating for the building floor in the embodiment 1-4 is compared with the sound insulation coating for the building floor in the comparative example 1-3.
Detection unit: guangdong institute for quality supervision and inspection of products.
According to the test method of GB/T1768-. The sound insulation coating for the building floor slab has good wear resistance, can be well applied to coating of building wall surfaces to insulate sound and prevent noise, has high use stability, and is not easy to be rubbed and loosened and separated from the wall surfaces.
5. Water resistance test
Test objects: the sound insulation coating for the building floor in the embodiment 1-4 is compared with the sound insulation coating for the building floor in the comparative example 1-3.
The detection method comprises the following steps: according to the test method of GB/T1733 + 1993 'determination method for water resistance of coating film', and simultaneously with reference to the test method of JG/T24-2018 'synthetic resin emulsion sand wall-shaped building coating', the test is carried out, and the test is carried out after the coating is soaked in normal-temperature water for 96 hours.
Detection unit: guangdong institute for quality supervision and inspection of products.
The results of the water resistance test of the sound-proofing coatings for building floor slabs of examples 1 to 4 and comparative examples 1 to 3 are shown in Table 4.
Table 4 test results of water resistance of sound-insulating coating materials for building floor in examples 1 to 4 and comparative examples 1 to 3
Figure BDA0002667680950000081
From the test results in table 4, it can be seen that the sound insulation coatings for building floor slabs of examples 1 to 4 have excellent water resistance compared to the sound insulation coatings for building floor slabs of comparative examples 1 to 2.
6. Bond Strength test
Test objects: the sound insulation coating for the building floor in the embodiment 1-4 is compared with the sound insulation coating for the building floor in the comparative example 1-3.
The detection method comprises the following steps: the detection is carried out according to the test method of JG/T24-2018 synthetic resin emulsion sand wall-shaped building coating.
Detection unit: guangdong institute for quality supervision and inspection of products.
The adhesion strength of the sound insulating coating for building floor of examples 1 to 4 and comparative examples 1 to 3 is shown in Table 5.
TABLE 5 measurement results of adhesive strength of sound-insulating coating materials for building floor in examples 1 to 4 and comparative examples 1 to 3
Figure BDA0002667680950000082
The test results in table 5 show that the sound-insulating coatings for building floors of examples 1 to 4 have a better bonding effect than the sound-insulating coatings for building floors of comparative examples 1 to 2.
The above embodiments are merely preferred embodiments of the present invention, and the technical solutions of the present invention are described in further detail, but the scope and implementation of the present invention are not limited thereto, and any changes, combinations, deletions, substitutions or modifications that do not depart from the spirit and principle of the present invention are included in the scope of the present invention.

Claims (10)

1. The sound insulation coating for the building floor is characterized by comprising the following components in percentage by weight:
8-15% of acrylic emulsion, 5-7% of floating bead, 38-45% of non-stone mineral wool, 3-5% of mica powder, 1-5% of nitrile rubber powder, 30-35% of water and 1% of auxiliary material;
the acrylic emulsion is a compound emulsion of acrylic elastic emulsion and acrylic styrene-acrylic emulsion according to the mass ratio of 11-15: 6-9; the auxiliary materials comprise a defoaming agent, a preservative, a thickening agent and a pigment.
2. The sound insulation coating for the building floor as claimed in claim 1, wherein the acrylic emulsion is a compound emulsion of acrylic elastic emulsion and acrylic styrene-acrylic emulsion according to a mass ratio of 13: 7.
3. The sound insulation coating for the building floor as claimed in claim 1, wherein the floating bead has a volume weight of 450-600kg/m3The particle size is 100 meshes.
4. The sound insulation coating for the building floor slab as claimed in claim 1, wherein the stone-free mineral wool is mineral wool with a heavy metal content of less than 5mg/kg, a fiber diameter of not more than 9 μm, a shot content of not more than 10 wt%, and a volume weight of 60-100kg/m3。
5. The sound insulation coating for the building floor as claimed in claim 1, wherein the particle size of the mica powder is 150-200 meshes.
6. The sound insulation coating for the building floor slab as claimed in claim 1, wherein the mass ratio of the defoaming agent, the preservative, the thickener and the pigment is 2.0-2.5:1.5-2.0:2: 4.
7. The sound insulation coating for the building floor slab as claimed in claim 1, wherein the thickener is hydroxyethyl cellulose; and/or the pigment is ferric oxide.
8. A method for preparing the sound-proof coating for the building floor slab of any one of claims 1 to 7, which comprises the following steps:
(1) taking part of water, adding a thickening agent, and stirring and dispersing uniformly at the rotating speed of 800-;
(2) mixing the acrylic emulsion with the rest water, and stirring and mixing uniformly at the rotating speed of 25-30 r/min; adding a defoaming agent and a preservative, and continuously stirring and uniformly mixing at the rotating speed of 25-30r/min to obtain a mixed solution;
(3) adding the thickener dispersed in the step (1) into the mixed solution in the step (2), and continuously stirring and uniformly mixing at the rotating speed of 25-30 r/min;
(4) then adding the floating beads, the stone-free mineral wool and the mica powder, and continuously stirring and mixing for 1.0-1.5h at the rotating speed of 25-30 r/min;
(5) and adding the pigment to perform color mixing, and obtaining the sound insulation coating for the building floor.
9. The preparation method according to claim 8, wherein in the step (4), the floating beads, the stone-free mineral wool and the mica powder are uniformly added in 3-5 batches, and the adding process comprises the following steps:
adding the stone-free mineral wool, and then adding the floating beads and the mica powder into a batch of feeding materials; after the feeding of one batch is finished, continuously stirring and uniformly mixing, and then feeding the next batch.
10. The method according to claim 8, wherein in the step (5), the pigment is added in 2 to 3 batches.
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CN113717686A (en) * 2021-09-08 2021-11-30 重庆裕时科技有限公司 Sound insulation glue and preparation process thereof
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CN112679897A (en) * 2020-12-25 2021-04-20 江苏博康特建材有限公司 Sound insulation cushion layer paste for floor ground of building floor and application thereof
CN113512324A (en) * 2021-07-23 2021-10-19 佛山市锐澳新材料有限公司 Bi-component floor slab sound insulation coating and preparation method thereof
CN113585574B (en) * 2021-08-30 2023-09-19 重庆中科建筑科技(集团)有限公司 Floor heat-insulating sound-insulating plate and processing method thereof
CN113585574A (en) * 2021-08-30 2021-11-02 重庆中科建筑科技(集团)有限公司 Floor heat-preservation sound-insulation board and processing method thereof
CN113717686A (en) * 2021-09-08 2021-11-30 重庆裕时科技有限公司 Sound insulation glue and preparation process thereof
CN113717686B (en) * 2021-09-08 2024-02-27 重庆裕时科技有限公司 Sound insulation adhesive and preparation process thereof
CN113717593A (en) * 2021-09-14 2021-11-30 惠州市顺心声学科技有限公司 Water-based sound insulation coating
CN114015313A (en) * 2021-11-24 2022-02-08 河北三棵树涂料有限公司 Flame-retardant sound-insulation coating and preparation method thereof
CN115678353A (en) * 2022-11-04 2023-02-03 广东碧橙材料科技有限公司 Individual household floor sound insulation coating suitable for robot construction and preparation method thereof
CN115678353B (en) * 2022-11-04 2023-09-08 广东碧橙材料科技有限公司 Separate floor sound insulation coating suitable for robot construction and preparation method thereof
CN115746641A (en) * 2022-11-18 2023-03-07 江苏凯伦建材股份有限公司 Water-based sound insulation coating and preparation method and application thereof
CN116463013A (en) * 2023-03-31 2023-07-21 北京卫星制造厂有限公司 High-elasticity sound insulation coating for floor and preparation method thereof
CN116463013B (en) * 2023-03-31 2024-08-06 北京卫星制造厂有限公司 High-elasticity sound insulation coating for floor and preparation method thereof

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