CN116144226A - Self-repairing sound insulation coating and preparation method thereof - Google Patents
Self-repairing sound insulation coating and preparation method thereof Download PDFInfo
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- CN116144226A CN116144226A CN202211530739.4A CN202211530739A CN116144226A CN 116144226 A CN116144226 A CN 116144226A CN 202211530739 A CN202211530739 A CN 202211530739A CN 116144226 A CN116144226 A CN 116144226A
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- 238000009413 insulation Methods 0.000 title claims abstract description 65
- 238000000576 coating method Methods 0.000 title claims abstract description 53
- 239000011248 coating agent Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 42
- 239000000839 emulsion Substances 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 33
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 21
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 21
- 239000011575 calcium Substances 0.000 claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 21
- 239000011521 glass Substances 0.000 claims abstract description 21
- 239000010445 mica Substances 0.000 claims abstract description 21
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 21
- 229920001971 elastomer Polymers 0.000 claims abstract description 17
- 239000000806 elastomer Substances 0.000 claims abstract description 17
- 239000011324 bead Substances 0.000 claims abstract description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 15
- 239000001257 hydrogen Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims description 68
- 238000002156 mixing Methods 0.000 claims description 23
- 239000002245 particle Substances 0.000 claims description 16
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 12
- 239000002518 antifoaming agent Substances 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 239000002270 dispersing agent Substances 0.000 claims description 12
- 239000000080 wetting agent Substances 0.000 claims description 12
- 230000000844 anti-bacterial effect Effects 0.000 claims description 10
- 239000003899 bactericide agent Substances 0.000 claims description 10
- 239000003973 paint Substances 0.000 claims description 10
- 239000002562 thickening agent Substances 0.000 claims description 10
- 239000002861 polymer material Substances 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 9
- 239000002174 Styrene-butadiene Substances 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 239000011115 styrene butadiene Substances 0.000 claims description 6
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229920003086 cellulose ether Polymers 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 239000012752 auxiliary agent Substances 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 230000002441 reversible effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000013016 damping Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 8
- 239000003063 flame retardant Substances 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- 229920003225 polyurethane elastomer Polymers 0.000 description 8
- 239000002344 surface layer Substances 0.000 description 8
- 239000004005 microsphere Substances 0.000 description 5
- 238000009472 formulation Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- 230000006399 behavior Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
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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
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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
- C09D109/00—Coating compositions based on homopolymers or copolymers of conjugated diene hydrocarbons
- C09D109/06—Copolymers with styrene
- C09D109/08—Latex
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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
- 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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- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- Chemical & Material Sciences (AREA)
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Abstract
The invention provides a self-repairing sound insulation coating and a preparation method thereof, belonging to the technical field of building coatings, wherein the coating comprises, by mass, 5-20 parts of an elastomer, 5-30 parts of emulsion, 1-3 parts of hollow glass beads, 3-5 parts of mica powder, 2-3 parts of heavy calcium powder, 2-3 parts of aluminum silicate fibers, 20-40 parts of water and 0.2-0.5 part of auxiliary materials. The self-repairing elastomer disclosed by the invention has the advantages that the self-repairing emulsion with multiple hydrogen bonds is used as a film forming substance, and the components such as mica powder, heavy calcium powder, hollow glass beads, aluminum silicate fibers and the like are matched, so that the coating has a good damping and sound insulation effect, and also has the self-repairing function after damage.
Description
Technical Field
The invention relates to the technical field of building coatings, in particular to a self-repairing sound insulation coating and a preparation method thereof.
Background
According to the current version GB/T50118-2010 'civil construction sound insulation design Specification' and GB/T50738-2019 'green construction evaluation Standard', the impact sound of a separate floor slab of a civil green construction is not more than 75 dB, but the impact sound of a common floor slab at present is between 78 and 84 dB, and if the standard requirement is met, an additional sound insulation structure is required to be made on the floor slab. At present, three floor sound insulation schemes are commonly used in civil construction engineering, namely, middle layer sound insulation treatment, suspended ceiling layer sound insulation treatment and floor surface layer sound insulation treatment, and all the three schemes have advantages and disadvantages.
And the middle layer is subjected to sound insulation treatment, a high-elasticity soft substance layer sound insulation material is paved between the base layer and the surface layer of the floor slab, the base layer and the surface layer are completely isolated, and vibration noise generated by impact on the surface floor layer is reduced. By adopting the interlayer sound insulation treatment scheme, the sound insulation effect is excellent, but the hollowing phenomenon of the surface layer is easy to occur, the thickness of the surface layer is larger, and the indoor clear height space is greatly reduced. The ceiling layer sound insulation treatment is to perform ceiling treatment under the floor slab, and a cavity is formed between the ceiling and the floor slab, so that air noise generated by floor slab impact can be blocked. The sound insulation effect of the ceiling sound insulation treatment scheme is obvious, but the cost is high, the net height of floors is greatly reduced, and the scheme is not suitable for delivery of blank buildings. The floor surface layer is paved with the sound insulation paint or the sound insulation mortar, so that the floor is convenient to construct, the floor height can be effectively saved, the sound insulation effect is good, the defect is that the comprehensive performance requirement on the sound insulation material is high, and a thicker surface layer is required to realize better sound insulation performance.
At present, the sound insulation coating is a sound insulation product with high cost performance from comprehensive consideration of comprehensive cost, convenient construction, consumer acceptance and the like. Under the condition of small construction thickness (3-5 mm), the material has good sound insulation performance, and meanwhile, in the construction process, certain construction behaviors can damage a coating layer to a certain extent, so that the sound insulation performance of the coating is greatly reduced, and the sound insulation effect of the sound insulation coating is poor. Therefore, the sound-insulating paint has a certain wear resistance, or has self-repairing capability after the sound-insulating paint is damaged to a certain extent. This therefore places higher demands on the properties of the sound-insulating coating.
Disclosure of Invention
The invention aims to provide a self-repairing sound insulation coating and a preparation method thereof, which solve the technical problems that the sound insulation coating is damaged, the sound insulation performance of the coating is poor and even fails due to some construction behaviors when the surface layer of the sound insulation coating is constructed.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the self-repairing sound insulating paint comprises, by mass, 5-20 parts of an elastomer, 5-30 parts of an emulsion, 1-3 parts of hollow glass microspheres, 3-5 parts of mica powder, 2-3 parts of heavy calcium powder, 2-3 parts of aluminum silicate fibers, 20-40 parts of water and 0.2-0.5 part of auxiliary materials.
Further, the elastomer is an intrinsic self-repairing polymer material.
Further, the repairing mechanism of the self-repairing polymer material is at least one of dynamic reversible covalent bond, disulfide bond, multiple hydrogen bond and supermolecule pi-pi stack.
Further, the self-repairing formula of the self-repairing polymer material is realized by heating.
Further, the heating temperature range of the self-repairing polymer material is 60-100 ℃, and the repairing time is 1-6 h.
Further, the emulsion is at least one of acrylic emulsion, styrene-butadiene emulsion, polyurethane emulsion and epoxy resin emulsion with multiple hydrogen bonds and self-repairing capability.
Further, the particle size of the hollow glass beads is 40-100 mu m, the particle size of the mica powder is 200-2000 meshes, the mesh number of the heavy calcium powder is 200-1250 meshes, and the length of the aluminum silicate fiber is 3-5mm.
Further, the auxiliary materials comprise 0.04 part of defoaming agent, 0.06 part of cellulose ether, 0.02 part of dispersing agent, 0.03 part of wetting agent, 0.02 part of film forming auxiliary agent, 0.02 part of silane coupling agent, 0.01 part of thickening agent and 0.02 part of bactericide.
A method for preparing a self-repairing sound insulation coating, comprising the following steps:
step 1: sequentially adding a defoaming agent, cellulose ether, a dispersing agent, a wetting agent and a silane coupling agent into water at room temperature, mixing and stirring uniformly to obtain a material aqueous solution, and then stirring and mixing;
step 2: sequentially adding mica powder, heavy calcium powder, hollow glass beads and an elastomer into the material aqueous solution, and uniformly mixing and stirring;
step 3: dropwise adding a film additive into the solution prepared in the step 2, wherein the stirring speed is 300-500 rpm/min, the stirring time is 1-3 min, then adding the emulsion, and the stirring speed is 500-700 rpm/min, and the stirring time is 3-5 min;
step 4: adding aluminum silicate fibers into the solution prepared in the step 3, mixing and stirring uniformly, wherein the stirring speed is 900-1200 rpm/min, and the stirring time is 10-20 min, so that the required self-repairing sound insulation coating is obtained.
Further, the stirring speed in the step 1 is 300-500 rpm/min, the stirring time is 5-10 min, the stirring speed in the step 2 is 800-1200 rpm/min, and the stirring time is 10-15 min.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
(1) The self-repairing elastomer disclosed by the invention has the advantages that the self-repairing emulsion with multiple hydrogen bonds is used as a film forming substance, and the components such as mica powder, heavy calcium powder, hollow glass beads, aluminum silicate fibers and the like are matched, so that the coating has a good damping and sound insulation effect, and also has the self-repairing function after damage.
(2) Compared with common materials, the elastomer with self-repairing function and the multiple hydrogen bond coating have excellent damping performance and self-repairing capability. When the self-repairing polymer material is damaged by external factors such as abrasion and fracture, the material can restore the mechanical property and damping property of the material as before through external stimulation conditions such as heating.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail by referring to preferred embodiments. It should be noted, however, that many of the details set forth in the description are merely provided to provide a thorough understanding of one or more aspects of the invention, and that these aspects of the invention may be practiced without these specific details.
Example 1
The self-repairing sound-insulating paint comprises the following components in parts by weight: 5 parts of elastomer, 15 parts of emulsion, 1 part of hollow glass microsphere, 4 parts of mica powder, 2 parts of heavy calcium powder, 2 parts of aluminum silicate fiber, 30 parts of water and 0.2 part of auxiliary material;
in the formula of the self-repairing sound insulation coating, the elastomer is a self-repairing polyurethane material, and the repairing temperature is 70 ℃ through a synergistic action mechanism of disulfide bonds and multiple hydrogen bonds in a polyurethane elastomer matrix;
in the formula of the self-repairing sound insulation coating, the emulsion is prepared by blending acrylic emulsion and styrene-butadiene emulsion with multiple hydrogen bonds in a ratio of 1:1;
in the formula of the self-repairing sound-insulating coating, the particle size of the hollow glass beads is 40 mu m, the particle size of mica powder is 200 meshes, the particle size of heavy calcium powder is 1250 meshes, and the length of aluminum silicate fibers is 3-5 mm;
in the formula of the self-repairing sound insulation coating, the auxiliary materials comprise a defoaming agent, a dispersing agent, a wetting agent, a silane coupling agent, a thickening agent, a flame retardant and a bactericide;
according to the above formulation, the preparation method of the self-repairing sound insulation coating comprises the following steps:
step 1: sequentially adding a defoaming agent, a dispersing agent, a wetting agent, a thickening agent and a silane coupling agent into water at room temperature, mixing and stirring uniformly to obtain a material aqueous solution, wherein the stirring speed is 300 rpm/min, and the stirring time is 5-min;
step 2: sequentially adding mica powder, heavy calcium powder, hollow glass beads and self-repairing polyurethane elastomer into the aqueous solution of the materials, mixing and stirring uniformly, wherein the stirring speed is 1000 rpm/min, and the stirring time is 10 min;
step 3: adding the emulsion in the step 2, wherein the stirring speed is 700 rpm/min, and the stirring time is 3 min;
step 4: adding aluminum silicate fibers into the solution prepared in the step 3, mixing and stirring uniformly, adding a flame retardant and a bactericide, stirring at 1200 rpm/min for 15 min, and obtaining the required self-repairing sound insulation coating.
Example 2
The self-repairing sound-insulating paint comprises the following components in parts by weight: 10 parts of elastomer, 20 parts of emulsion, 1 part of hollow glass microsphere, 4 parts of mica powder, 2 parts of heavy calcium powder, 2 parts of aluminum silicate fiber, 30 parts of water and 0.3 part of auxiliary material;
in the formula of the self-repairing sound insulation coating, the elastomer is a self-repairing polyurethane material, and the repairing temperature is 70 ℃ through a synergistic action mechanism of disulfide bonds and multiple hydrogen bonds in a polyurethane elastomer matrix;
in the formula of the self-repairing sound insulation coating, the acrylic emulsion and the styrene-butadiene emulsion of the multiple hydrogen bond emulsion are blended in a ratio of 1:1;
in the formula of the self-repairing sound-insulating coating, the particle size of the hollow glass beads is 80 mu m, the particle size of mica powder is 1250 meshes, the particle size of heavy calcium powder is 200 meshes, and the length of aluminum silicate fibers is 3-5 mm;
in the formula of the self-repairing sound insulation coating, the auxiliary materials comprise a defoaming agent, a dispersing agent, a wetting agent, a silane coupling agent, a thickening agent, a flame retardant and a bactericide;
according to the above formulation, the preparation method of the self-repairing sound insulation coating comprises the following steps:
step 1: sequentially adding a defoaming agent, a dispersing agent, a wetting agent, a thickening agent and a silane coupling agent into water at room temperature, mixing and stirring uniformly to obtain a material aqueous solution, wherein the stirring speed is 300 rpm/min, and the stirring time is 5-min;
step 2: sequentially adding mica powder, heavy calcium powder, hollow glass beads and self-repairing polyurethane elastomer into the aqueous solution of the materials, mixing and stirring uniformly, wherein the stirring speed is 1000 rpm/min, and the stirring time is 10 min;
step 3: adding the emulsion in the step 2, wherein the stirring speed is 700 rpm/min, and the stirring time is 3 min;
step 4: adding aluminum silicate fibers into the solution prepared in the step 3, mixing and stirring uniformly, adding a flame retardant and a bactericide, stirring at 1200 rpm/min for 15 min, and obtaining the required self-repairing sound insulation coating.
Example 3
The self-repairing sound-insulating paint comprises the following components in parts by weight: 15 parts of porous elastomer, 23 parts of emulsion, 1 part of hollow glass microsphere, 4 parts of mica powder, 3 parts of heavy calcium powder, 2 parts of aluminum silicate fiber, 32 parts of water and 0.3 part of auxiliary material;
in the formula of the self-repairing sound insulation coating, the elastomer is a self-repairing polyurethane material, and the repairing temperature is 70 ℃ through a synergistic action mechanism of disulfide bonds and multiple hydrogen bonds in a polyurethane elastomer matrix;
in the formula of the self-repairing sound insulation coating, the emulsion is prepared by blending acrylic emulsion and styrene-butadiene emulsion with multiple hydrogen bonds in a ratio of 1:1;
in the formula of the self-repairing sound-insulating coating, the particle size of the hollow glass beads is 60 mu m, the particle size of mica powder is 200 meshes, the particle size of heavy calcium powder is 800 meshes, and the length of aluminum silicate fibers is 3-5 mm;
in the formula of the self-repairing sound insulation coating, the auxiliary materials comprise a defoaming agent, a dispersing agent, a wetting agent, a silane coupling agent, a thickening agent, a flame retardant and a bactericide;
according to the above formulation, the preparation method of the self-repairing sound insulation coating comprises the following steps:
step 1: sequentially adding a defoaming agent, a dispersing agent, a wetting agent, a thickening agent and a silane coupling agent into water at room temperature, mixing and stirring uniformly to obtain a material aqueous solution, wherein the stirring speed is 300 rpm/min, and the stirring time is 5-min;
step 2: sequentially adding mica powder, heavy calcium powder, hollow glass beads and self-repairing polyurethane elastomer into the aqueous solution of the materials, mixing and stirring uniformly, wherein the stirring speed is 1000 rpm/min, and the stirring time is 10 min;
step 3: adding the emulsion in the step 2, wherein the stirring speed is 700 rpm/min, and the stirring time is 3 min;
step 4: adding aluminum silicate fibers into the solution prepared in the step 3, mixing and stirring uniformly, adding a flame retardant and a bactericide, stirring at 1200 rpm/min for 15 min, and obtaining the required self-repairing sound insulation coating.
Example 4
The self-repairing sound-insulating paint comprises the following components in parts by weight: 20 parts of elastomer, 23 parts of emulsion, 1 part of hollow glass microsphere, 4 parts of mica powder, 2 parts of heavy calcium powder, 2 parts of aluminum silicate fiber, 32 parts of water and 0.3 part of auxiliary material;
in the formula of the self-repairing sound insulation coating, the elastomer is a self-repairing polyurethane material, and the repairing temperature is 70 ℃ through a synergistic action mechanism of disulfide bonds and multiple hydrogen bonds in a polyurethane elastomer matrix;
in the formula of the self-repairing sound insulation coating, the emulsion is prepared by blending acrylic emulsion and styrene-butadiene emulsion with multiple hydrogen bonds in a ratio of 1:1;
in the formula of the self-repairing sound-insulating coating, the particle size of the hollow glass beads is 40 mu m, the particle size of mica powder is 200 meshes, the particle size of heavy calcium powder is 1250 meshes, and the length of aluminum silicate fibers is 3-5 mm;
in the formula of the self-repairing sound insulation coating, the auxiliary materials comprise a defoaming agent, a dispersing agent, a wetting agent, a silane coupling agent, a thickening agent, a flame retardant and a bactericide;
according to the above formulation, the preparation method of the self-repairing sound insulation coating comprises the following steps:
step 1: sequentially adding a defoaming agent, a dispersing agent, a wetting agent, a thickening agent and a silane coupling agent into water at room temperature, mixing and stirring uniformly to obtain a material aqueous solution, wherein the stirring speed is 300 rpm/min, and the stirring time is 5-min;
step 2: sequentially adding mica powder, heavy calcium powder, hollow glass beads and self-repairing polyurethane elastomer into the aqueous solution of the materials, mixing and stirring uniformly, wherein the stirring speed is 1000 rpm/min, and the stirring time is 10 min;
step 3: adding the emulsion in the step 2, wherein the stirring speed is 700 rpm/min, and the stirring time is 3 min;
step 4: adding aluminum silicate fibers into the solution prepared in the step 3, mixing and stirring uniformly, adding a flame retardant and a bactericide, stirring at 1200 rpm/min for 15 min, and obtaining the required self-repairing sound insulation coating.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. A self-repairing sound insulation coating is characterized in that: comprises the following components, by mass, 5-20 parts of an elastomer, 5-30 parts of an emulsion, 1-3 parts of hollow glass beads, 3-5 parts of mica powder, 2-3 parts of heavy calcium powder, 2-3 parts of aluminum silicate fibers, 20-40 parts of water and 0.2-0.5 part of auxiliary materials.
2. A self-healing acoustical insulation coating according to claim 1, wherein: the elastic body is an intrinsic self-repairing high polymer material.
3. A self-healing acoustical insulation coating according to claim 2, wherein: the repairing mechanism of the self-repairing polymer material is at least one of dynamic reversible covalent bond, disulfide bond, multiple hydrogen bonds and supermolecule pi-pi stacking.
4. A self-healing acoustical insulation coating according to claim 3, wherein: the self-repairing formula of the self-repairing high polymer material is realized by heating.
5. A self-healing acoustical insulation coating according to claim 4, wherein: the heating temperature of the self-repairing polymer material is 60-100 ℃ and the repairing time is 1-6 h.
6. A self-healing acoustical insulation coating according to claim 1, wherein: the emulsion is at least one of acrylic emulsion, styrene-butadiene emulsion, polyurethane emulsion and epoxy resin emulsion with multiple hydrogen bonds and self-repairing capability.
7. A self-healing acoustical insulation coating according to claim 1, wherein: the particle size of the hollow glass beads is 40-100 mu m, the particle size of the mica powder is 200-2000 meshes, the mesh size of the heavy calcium powder is 200-1250 meshes, and the length of the aluminum silicate fiber is 3-5mm.
8. A self-healing acoustical insulation coating according to claim 1, wherein: the auxiliary materials comprise 0.04 part of defoaming agent, 0.06 part of cellulose ether, 0.02 part of dispersing agent, 0.03 part of wetting agent, 0.02 part of film forming auxiliary agent, 0.02 part of silane coupling agent, 0.01 part of thickening agent and 0.02 part of bactericide.
9. The method for preparing the self-repairing sound insulation paint according to any one of claims 1 to 8, which is characterized in that: the method comprises the following steps:
step 1: sequentially adding a defoaming agent, cellulose ether, a dispersing agent, a wetting agent and a silane coupling agent into water at room temperature, mixing and stirring uniformly to obtain a material aqueous solution, and then stirring and mixing;
step 2: sequentially adding mica powder, heavy calcium powder, hollow glass beads and an elastomer into the material aqueous solution, and uniformly mixing and stirring;
step 3: dropwise adding a film additive into the solution prepared in the step 2, wherein the stirring speed is 300-500 rpm/min, the stirring time is 1-3 min, then adding the emulsion, and the stirring speed is 500-700 rpm/min, and the stirring time is 3-5 min;
step 4: adding aluminum silicate fibers into the solution prepared in the step 3, mixing and stirring uniformly, wherein the stirring speed is 900-1200 rpm/min, and the stirring time is 10-20 min, so that the required self-repairing sound insulation coating is obtained.
10. The method for preparing the self-repairing sound insulation paint as claimed in claim 9, wherein the method comprises the following steps: the stirring speed in the step 1 is 300-500 rpm/min, the stirring time is 5-10 min, the stirring speed in the step 2 is 800-1200 rpm/min, and the stirring time is 10-15 min.
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| CN116589915A (en) * | 2023-07-17 | 2023-08-15 | 山东孚日宣威新材料科技有限公司 | Heat shielding coating material and preparation method thereof |
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