CN114149662B - Building energy-saving sound-insulation material and preparation method and application thereof - Google Patents
Building energy-saving sound-insulation material and preparation method and application thereof Download PDFInfo
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- CN114149662B CN114149662B CN202111464136.4A CN202111464136A CN114149662B CN 114149662 B CN114149662 B CN 114149662B CN 202111464136 A CN202111464136 A CN 202111464136A CN 114149662 B CN114149662 B CN 114149662B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000012774 insulation material Substances 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000011810 insulating material Substances 0.000 claims abstract description 15
- 239000004566 building material Substances 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 76
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 45
- 239000002086 nanomaterial Substances 0.000 claims description 42
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 31
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 25
- 239000008367 deionised water Substances 0.000 claims description 24
- 229910021641 deionized water Inorganic materials 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 21
- 150000001875 compounds Chemical class 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 19
- 238000005406 washing Methods 0.000 claims description 18
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 claims description 17
- 229910052621 halloysite Inorganic materials 0.000 claims description 17
- 239000002071 nanotube Substances 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 13
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 12
- NHBRUUFBSBSTHM-UHFFFAOYSA-N n'-[2-(3-trimethoxysilylpropylamino)ethyl]ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCNCCN NHBRUUFBSBSTHM-UHFFFAOYSA-N 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 10
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 10
- 239000012279 sodium borohydride Substances 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 125000003277 amino group Chemical group 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims description 5
- 239000008139 complexing agent Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 239000004094 surface-active agent Substances 0.000 claims description 5
- MXXDSLLVYZMTFA-UHFFFAOYSA-N octadecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 MXXDSLLVYZMTFA-UHFFFAOYSA-N 0.000 claims description 4
- RQLAECZYKAZYBU-UHFFFAOYSA-N tetraazanium 2-hydroxypropane-1,2,3-tricarboxylate chloride Chemical compound [NH4+].[NH4+].[NH4+].[NH4+].[Cl-].OC(CC([O-])=O)(CC([O-])=O)C([O-])=O RQLAECZYKAZYBU-UHFFFAOYSA-N 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- GGHPAKFFUZUEKL-UHFFFAOYSA-M sodium;hexadecyl sulfate Chemical compound [Na+].CCCCCCCCCCCCCCCCOS([O-])(=O)=O GGHPAKFFUZUEKL-UHFFFAOYSA-M 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 2
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 2
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims description 2
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- YLBPOJLDZXHVRR-UHFFFAOYSA-N n'-[3-[diethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CCO[Si](C)(OCC)CCCNCCN YLBPOJLDZXHVRR-UHFFFAOYSA-N 0.000 claims description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 2
- HEBRGEBJCIKEKX-UHFFFAOYSA-M sodium;2-hexadecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HEBRGEBJCIKEKX-UHFFFAOYSA-M 0.000 claims description 2
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 claims description 2
- PXGZUMCOTGAVEC-UHFFFAOYSA-N 3-[dimethoxy(penta-1,4-dien-3-yloxy)silyl]propane-1,1,1-triamine Chemical compound C(=C)C(O[Si](OC)(OC)CCC(N)(N)N)C=C PXGZUMCOTGAVEC-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000010298 pulverizing process Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 31
- 230000000694 effects Effects 0.000 abstract description 18
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 238000002844 melting Methods 0.000 description 11
- 230000008018 melting Effects 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 230000004888 barrier function Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 8
- 230000006872 improvement Effects 0.000 description 8
- 239000011148 porous material Substances 0.000 description 7
- 239000000499 gel Substances 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 150000002506 iron compounds Chemical class 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910002028 silica xerogel Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- LXAHHHIGZXPRKQ-UHFFFAOYSA-N 5-fluoro-2-methylpyridine Chemical compound CC1=CC=C(F)C=N1 LXAHHHIGZXPRKQ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- KBAFDSIZQYCDPK-UHFFFAOYSA-M sodium;octadecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCCCCCCCS([O-])(=O)=O KBAFDSIZQYCDPK-UHFFFAOYSA-M 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229940080236 sodium cetyl sulfate Drugs 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/544—Silicon-containing compounds containing nitrogen
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/88—Insulating elements for both heat and sound
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/88—Insulating elements for both heat and sound
- E04B1/90—Insulating elements for both heat and sound slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0856—Iron
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention provides a building energy-saving sound-insulating material and a preparation method and application thereof, belonging to the technical field of building materials. The building energy-saving sound insulation material prepared by the invention has good heat insulation and sound insulation effects and low water absorption rate, can be used for preparing sound insulation coatings, sound insulation plates and sound insulation walls, and has wide application prospects.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a building energy-saving sound-insulating material and a preparation method and application thereof.
Background
Noise has become a major environmental pollution, and the acoustic environmental problem of buildings is receiving more and more attention and attention. The sound absorption, sound insulation and shock absorption treatment of buildings by selecting proper materials is one of the most common and basic technical measures for noise control nowadays.
When the sound wave encounters a uniform barrier (such as a wooden board, a metal plate, a wall, etc.) in the propagation path, due to the change of dielectric impedance, a part of the sound energy is reflected back by the barrier, and another part of the sound energy is absorbed by the barrier, so that only a part of the sound energy can be radiated to another space through the barrier. The phenomenon of acoustic energy reduction caused by barriers is called sound insulation, and barriers with sound insulation capability are called sound insulation structures or sound insulation members. The absorption of sound energy is the result of the viscosity and internal friction of the sound-absorbing material under the vibration of sound waves. Because the vibration speeds of the particles are different when the sound wave is transmitted, the viscous force or the internal friction force of the interaction is generated between the adjacent particles, thereby converting the sound energy into the heat energy. This condition works most strongly at media interfaces, where viscous effects are dominant; when sound is transmitted to the surface of the material, a part of sound energy is reflected, and the magnitude of the reflected energy reflects the sound insulation performance. At present, noise is serious environmental pollution in building construction, and therefore a proper sound insulation material needs to be selected during construction engineering so as to ensure that the house has good noise prevention effect. The material sound insulation aims at the size of transmission sound energy on the other side of an incident sound source, and aims at reducing the transmission sound energy, weakening the transmission sound energy and blocking the transmission of sound.
The sound insulation material is a material, a member or a structure which can block sound transmission or weaken transmitted sound energy, the mass is heavier, the density is higher, and the common traditional sound insulation materials comprise steel plates, lead plates, concrete walls, brick walls and the like. For sound insulation, the material should be heavy and dense to reduce the transmitted sound energy and block the transmission of sound, which is not as porous, loose and permeable as the sound absorption material. The sound insulation materials are various in types, and are commonly solid bricks, reinforced concrete walls, wood boards, gypsum boards, iron plates, sound insulation felts, fiber boards and the like, but the sound insulation materials generally have the defects of poor environmental protection property, unsatisfactory sound insulation property and the like.
Disclosure of Invention
The invention aims to provide a building energy-saving sound-insulating material, a preparation method and application thereof, the prepared building energy-saving sound-insulating material has a good sound-insulating effect, can be used for preparing sound-insulating coatings, sound-insulating plates and sound-insulating walls, and has a wide application prospect.
The technical scheme of the invention is realized as follows:
the invention provides a preparation method of a building energy-saving sound-insulating material, which comprises the steps of adding sodium borohydride into a ferric iron solution to prepare nano iron powder, compounding the nano iron powder with halloysite nanotubes, modifying the nano iron powder by using a silane coupling agent, adding the nano iron powder into molten PBT resin, uniformly mixing, extruding, granulating, crushing, adding the obtained mixture into a solution containing aminosilane, and carrying out sol-gel reaction to obtain the building energy-saving sound-insulating material.
As a further improvement of the invention, the method specifically comprises the following steps:
s1, preparation of nano iron: adding a surfactant and a complexing agent into a ferric iron solution, uniformly mixing, adding a sodium borohydride solution, controlling the reaction temperature to be 15-30 ℃, separating a magnet when hydrogen is completely released, washing, and drying to obtain nano iron powder;
s2, preparing a modified nano material: adding the nano iron powder and the halloysite nanotube prepared in the step S1 into an ethanol solution containing a silane coupling agent, heating to 70-90 ℃, reacting for 1-3h, separating by a magnet, washing, and drying to obtain a modified nano material;
s3, preparing the PBT-modified nano iron compound: heating the PBT to be molten, adding the modified nano material prepared in the step S2, stirring and mixing uniformly, and then performing melt extrusion granulation, crushing and porphyrizing to obtain a PBT-modified nano material compound;
s4, preparing the energy-saving and sound-insulating building material: and (4) adding the PBT-modified nano material compound prepared in the step (S3) into an ethanol solution containing aminosilane, stirring and mixing uniformly, adding ammonia water to adjust the pH value to 8-10, heating to 50-60 ℃, reacting for 7-9h, drying in vacuum, and crushing to obtain the building energy-saving sound-insulating material.
As a further improvement of the invention, fe in the ferric iron solution in step S1 3+ The mass concentration of the substance(s) is 0.1-0.5mol/L; the surfactant is selected from at least one of sodium dodecyl sulfonate, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium hexadecyl benzene sulfonate, sodium hexadecyl sulfate, sodium octadecyl benzene sulfonate and sodium octadecyl benzene sulfonate; the complexing agent is selected from at least one of ammonium citrate chloride and EDTA disodium; the mass concentration of the sodium borohydride solution is 0.6-3mol/L.
As a further improvement of the invention, the mass ratio of the nanometer iron powder to the halloysite nanotubes in the step S2 is 10: (3-7); the mass fraction of the silane coupling agent in the ethanol solution containing the silane coupling agent is 4-7wt%; the silane coupling agent is a silane coupling agent with amino groups and is selected from at least one of KH550, KH792 and DL 602.
As a further improvement of the invention, the melting temperature of the PBT in the step S3 is 240-260 ℃, and the mass ratio of the PBT to the modified nano material is 10: (5-12); the crushing is carried out until the particle size is between 10 and 100 mu m.
In a further improvement of the present invention, in step S4, the aminosilane is at least one selected from the group consisting of γ -aminopropyltrimethoxysilane, γ -aminopropyltriethoxysilane, N- β (aminoethyl) - γ -aminopropyltrimethoxysilane, N- β (aminoethyl) - γ -aminopropyltriethoxysilane, N- β (aminoethyl) - γ -aminopropylmethyldimethoxysilane, N- β (aminoethyl) - γ -aminopropylmethyldiethoxysilane, and diethylenetriaminopropyltrimethoxysilane; the mass fraction of the aminosilane in the aminosilane-containing ethanol solution is 35-60wt%; the mass-volume ratio of the PBT-modified nano material compound to the ethanol solution containing aminosilane is 1: (1-2) g/mL; the vacuum drying temperature is 70-90 ℃, and the time is 10-15h.
As a further improvement of the invention, the aminosilane is a compound mixture of gamma-aminopropyltrimethoxysilane and diethylenetriaminopropyltrimethoxysilane, and the mass ratio of the aminosilane to the aminosilane is (1-3): 1.
as a further improvement of the invention, the washing step is washing with deionized water, ethanol and deionized water in sequence.
The invention further protects the building energy-saving sound-insulating material prepared by the preparation method.
The invention further protects the application of the building energy-saving sound-insulating material in sound-insulating coatings, sound-insulating plates and sound-insulating walls.
The invention has the following beneficial effects: the invention adopts a reduction method to prepare nanoscale iron powder, which is an excellent damping material, and can convert sound wave energy into heat energy to be dissipated or stored through magnetic effect (magnetochemistry lag, magnetoelasticity and the like), thereby achieving the effects of noise reduction and sound insulation;
the prepared nanometer iron powder and the halloysite nanotube are compounded, after being modified by a silane coupling agent with amino, a large number of amino groups are formed on the surface of the nanometer iron powder and further form a compound with PBT resin, the amino groups are easy to form hydrogen bonds with ester groups of the PBT resin, so that a microscopic three-dimensional structure is constructed, pores are enriched, and meanwhile, the nanometer iron powder and the hollow structure of the halloysite nanotube form air separation at one stroke, so that the sound insulation effect is enhanced, and the heat insulation effect is better;
then, adding the PBT-modified nano material compound into an aminosilane solution, carrying out sol-gel reaction under an alkaline condition, hydrolyzing the aminosilane to prepare a macroporous structure with a visible appearance, and carrying out vacuum drying to form cellular-like porous hydrogel dry powder to prepare the energy-saving sound-insulating material for the building, wherein the energy-saving sound-insulating material can be used for preparing sound-insulating coatings, sound-insulating plates and sound-insulating walls and has a wide application prospect.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a preparation method of a building energy-saving sound insulation material, which specifically comprises the following steps:
s1, preparation of nano iron: adding sodium dodecyl sulfate and EDTA disodium, fe to 100mL ferric chloride solution 3+ The mass concentration of the substances is 0.1mol/L, after uniform mixing, 100mL of 0.6mol/L sodium borohydride solution is added, the reaction temperature is controlled at 15 ℃, when hydrogen is completely released, the magnet is separated, deionized water, ethanol and deionized water are sequentially used for washing and drying, and the nanometer iron powder is obtained;
s2, preparing a modified nano material: adding 10g of the nano iron powder prepared in the step S1 and 3g of the halloysite nanotube into an ethanol solution containing a silane coupling agent KH550 (the mass fraction of the silane coupling agent is 4wt%, and the mass fraction of the ethanol is 35 wt%), heating to 70 ℃, reacting for 1h, separating a magnet, washing with deionized water, ethanol and deionized water in sequence, and drying to obtain a modified nano material;
s3, preparing the PBT-modified nano iron compound: heating 10g of PBT to 240 ℃ for melting, adding 5g of the modified nano material prepared in the step S2, stirring and mixing uniformly, melting, extruding, granulating, crushing and grinding to obtain a PBT-modified nano material compound with the particle size of 10-100 mu m;
s4, preparing the energy-saving and sound-insulating building material: adding 10g of the PBT-modified nano material composite prepared in the step S3 into 10mL of an ethanol solution containing 35wt% of aminosilane, stirring and mixing uniformly, adding ammonia water to adjust the pH value to 8, heating to 50 ℃, reacting for 7h, drying in vacuum at the temperature of 70 ℃ for 10h, and crushing to obtain the building energy-saving sound insulation material; the aminosilane is a compound mixture of gamma-aminopropyltrimethoxysilane and diethylenetriaminopropyltrimethoxysilane, and the mass ratio is 1:1.
example 2
The embodiment provides a preparation method of a building energy-saving sound insulation material, which specifically comprises the following steps:
s1, preparation of nano iron: to 100mL of ferric chloride solution was added sodium cetyl sulfate and disodium EDTA, fe 3+ The mass concentration of the substances is 0.5mol/L, after uniform mixing, adding 100mL 3mol/L sodium borohydride solution, controlling the reaction temperature to be 30 ℃, separating the magnet when hydrogen is completely released, washing the magnet by deionized water, ethanol and deionized water in sequence, and drying to obtain nano iron powder;
s2, preparing a modified nano material: adding 10g of the nano iron powder prepared in the step S1 and 7g of the halloysite nanotube into an ethanol solution containing a silane coupling agent KH792 (the mass fraction of the silane coupling agent is 7wt%, and the mass fraction of the ethanol is 40 wt%), heating to 90 ℃, reacting for 3 hours, separating a magnet, washing with deionized water, ethanol and deionized water in sequence, and drying to obtain a modified nano material;
s3, preparing the PBT-modified nano iron compound: heating 10g of PBT to 260 ℃ for melting, adding 12g of the modified nano material prepared in the step S2, uniformly stirring and mixing, melting, extruding, granulating, crushing and grinding to obtain a PBT-modified nano material compound with the particle size of 10-100 mu m;
s4, preparing the energy-saving and sound-insulating building material: adding 10g of the PBT-modified nano material composite prepared in the step S3 into 20mL of an ethanol solution containing 60wt% of aminosilane, stirring and mixing uniformly, adding ammonia water to adjust the pH value to 10, heating to 60 ℃, reacting for 9h, drying in vacuum at the temperature of 90 ℃ for 15h, and crushing to obtain the building energy-saving sound insulation material; the aminosilane is a compound mixture of gamma-aminopropyltrimethoxysilane and diethylenetriaminopropyltrimethoxysilane, and the mass ratio is 3:1.
example 3
The embodiment provides a preparation method of a building energy-saving sound insulation material, which specifically comprises the following steps:
s1, preparation of nano iron: to 100mL of ferric chloride solution was added sodium octadecyl sulfonate and ammonium citrate chloride, fe 3+ The mass concentration of the substances is 0.3mol/L, after uniform mixing, 1.8mol/L sodium borohydride solution of 100mL is added, the reaction temperature is controlled at 22 ℃, when hydrogen is completely released, the magnet is separated, deionized water, ethanol and deionized water are used for washing and drying in sequence, and the nano iron powder is obtained;
s2, preparing a modified nano material: adding 10g of the nanometer iron powder prepared in the step S1 and 5g of the halloysite nanotube into an ethanol solution (the mass fraction of the silane coupling agent is 6wt% and the mass fraction of the ethanol is 37 wt%) containing a silane coupling agent DL602, heating to 80 ℃, reacting for 2 hours, carrying out magnet separation, washing with deionized water, ethanol and deionized water in sequence, and drying to obtain a modified nanometer material;
s3, preparing the PBT-modified nano-iron compound: heating 10g of PBT to 250 ℃ for melting, adding 8g of the modified nano material prepared in the step S2, stirring and mixing uniformly, melting, extruding, granulating, crushing and grinding to obtain a PBT-modified nano material compound with the particle size of 10-100 mu m;
s4, preparing the energy-saving and sound-insulating building material: adding 10g of the PBT-modified nano material composite prepared in the step S3 into 15mL of an ethanol solution containing 45wt% of aminosilane, stirring and mixing uniformly, adding ammonia water to adjust the pH value to 9, heating to 55 ℃, reacting for 8 hours, drying in vacuum at the temperature of 80 ℃ for 12 hours, and crushing to obtain the building energy-saving sound insulation material; the aminosilane is a compound mixture of gamma-aminopropyltrimethoxysilane and diethylenetriaminopropyltrimethoxysilane, and the mass ratio is 2:1.
example 4
Compared with example 3, the aminosilane is gamma-aminopropyltrimethoxysilane, and other conditions are not changed.
Example 5
Compared with example 3, the aminosilane is diethylenetriaminopropyltrimethoxysilane, and other conditions are not changed.
Comparative example 1
Compared with the embodiment 3, the halloysite nanotube is not added in the preparation of the modified nano material in the step S2, and other conditions are not changed.
S2, preparing a modified nano material: and (2) adding 15g of the nano iron powder prepared in the step (S1) into an ethanol solution (the mass fraction of the silane coupling agent is 6wt%, and the mass fraction of the ethanol is 37 wt%) containing the silane coupling agent DL602, heating to 80 ℃, reacting for 2h, carrying out magnet separation, washing with deionized water, ethanol and deionized water in sequence, and drying to obtain the modified nano material.
Comparative example 2
Compared with the embodiment 3, the nano iron powder is not added in the preparation of the modified nano material in the step S2, and other conditions are not changed.
S1, preparing a modified nano material: adding 15g of halloysite nanotubes into an ethanol solution (the mass fraction of the silane coupling agent is 6wt%, and the mass fraction of the ethanol is 37 wt%) containing a silane coupling agent DL602, heating to 80 ℃, reacting for 2 hours, filtering, washing with deionized water, ethanol and deionized water in sequence, and drying to obtain the modified nanomaterial.
S2, preparing a PBT-modified nano-iron compound: heating 10g of PBT to 250 ℃ for melting, adding 8g of the modified nano material prepared in the step S1, stirring and mixing uniformly, melting, extruding, granulating, crushing and grinding to obtain a PBT-modified nano material compound with the particle size of 10-100 mu m;
s3, preparing the energy-saving sound insulation material for the building: adding 10g of the PBT-modified nano material composite prepared in the step S2 into 15mL of an ethanol solution containing 45wt% of aminosilane, stirring and mixing uniformly, adding ammonia water to adjust the pH value to 9, heating to 55 ℃, reacting for 8 hours, drying in vacuum at the temperature of 80 ℃ for 12 hours, and crushing to obtain the building energy-saving sound insulation material; the aminosilane is a compound mixture of gamma-aminopropyltrimethoxysilane and diethylenetriaminopropyltrimethoxysilane, and the mass ratio of the aminosilane to the diethylenetriaminopropyltrimethoxysilane is 2:1.
comparative example 3
Compared with example 3, the other conditions were not changed without going through step S4.
S1, preparing nano iron: to 100mL of ferric chloride solution was added sodium octadecyl sulfonate and ammonium citrate chloride, fe 3+ The mass concentration of the substances is 0.3mol/L, after uniform mixing, 1.8mol/L sodium borohydride solution of 100mL is added, the reaction temperature is controlled at 22 ℃, when hydrogen is completely released, the magnet is separated, deionized water, ethanol and deionized water are used for washing and drying in sequence, and the nano iron powder is obtained;
s2, preparing a modified nano material: adding 10g of the nano iron powder prepared in the step S1 and 5g of the halloysite nanotube into an ethanol solution (the mass fraction of the silane coupling agent is 6wt%, and the mass fraction of the ethanol is 37 wt%) containing a silane coupling agent DL602, heating to 80 ℃, reacting for 2 hours, carrying out magnet separation, washing with deionized water, ethanol and deionized water in sequence, and drying to obtain a modified nano material;
s3, preparing the PBT-modified nano-iron compound: and (3) heating 10g of PBT to 250 ℃ for melting, adding 8g of the modified nano material prepared in the step (S2), uniformly stirring and mixing, melting, extruding, granulating, crushing and grinding to obtain the PBT-modified nano material compound with the particle size of 10-100 microns.
Test example 1
The sound-insulating materials obtained in examples 1 to 5 of the present invention and comparative examples 1 to 3 were pressed at 100MPa to give test pieces of 10mm by 1mm by 100 mm, using the inside diameter
4206-T type sound tube (Bruel)&Kjaer Co., ltd.) and software for measurement (PULSE Material Testing Type 7758) were used to measure the vertical incidence transmission loss and determine the average transmission loss at 1 to 4kHz and 4 to 6kHz, and the results are shown in Table 1.
TABLE 1
As can be seen from Table 1, the building energy-saving sound-insulating materials prepared in examples 1 to 3 of the present invention have a good sound-insulating effect.
Test example 2
The soundproofing materials obtained in examples 1 to 5 of the present invention and comparative examples 1 to 3 were subjected to performance tests, and the results are shown in Table 2.
TABLE 2
| Group of | Grade of combustion | Coefficient of thermal conductivity (W/m. K) | Water absorption (%) |
| Example 1 | V-1 | 0.025 | 1.6 |
| Example 2 | V-1 | 0.021 | 1.5 |
| Example 3 | V-1 | 0.020 | 1.3 |
| Example 4 | V-1 | 0.029 | 1.8 |
| Example 5 | V-1 | 0.031 | 1.9 |
| Comparative example 1 | V-1 | 0.029 | 1.5 |
| Comparative example 2 | V-1 | 0.026 | 1.6 |
| Comparative example 3 | V-1 | 0.045 | 1.2 |
As can be seen from Table 1, the building energy-saving sound insulation materials prepared in the embodiments 1 to 3 of the invention have good heat insulation effect and low water absorption.
Compared with the embodiment 3, the amino silane is gamma-aminopropyl trimethoxy silane or diethylenetriaminopropyl trimethoxy silane, and because the diethylenetriaminopropyl trimethoxy silane has stronger alkalinity and the sol-gel reaction process is too fast, the formed porous silica xerogel has larger pores and is easy to collapse; the gamma-aminopropyl trimethoxy silane has weaker alkalinity, the sol-gel reaction process is too slow, and the formed porous silica xerogel has smaller pores, so that the undersize pores and the oversize pores are not beneficial to the sound insulation and heat insulation effects, therefore, the pore size of the xerogel can be adjusted by the compound addition of the gamma-aminopropyl trimethoxy silane and the diethylenetriaminopropyl trimethoxy silane, so that the prepared sound insulation material has the best sound insulation and heat insulation effects and has the synergistic effect.
Compared with the embodiment 3, the comparative example 1 has no addition of the halloysite nanotubes, so that the sound insulation effect is deteriorated, and the hollow structure of the halloysite nanotubes can form air barrier so as to enhance the sound insulation effect and have better heat insulation effect. Compared with the embodiment 3, the nano-iron powder is not added, the nano-iron powder is an excellent damping material, the acoustic energy can be converted into heat energy through the magnetic effect (magnetochemical hysteresis, magnetoelasticity and the like) to be dissipated or stored, the noise and sound insulation effects are achieved, the surfactant and the complexing agent are added in the preparation process, the reaction with sodium borohydride is facilitated to be not too fast, the reaction rate is delayed, the nano-iron powder with similar particle size is uniformly generated, the prepared nano-iron powder is compounded with the halloysite nanotube, a large number of amino groups are formed on the surface after the modification of the silane coupling agent with the amino groups, the nano-iron powder and the PBT resin form a compound, the amino groups are easy to form hydrogen bonds with ester groups of the PBT resin, the micro three-dimensional structure is constructed, the pores are enriched, and simultaneously, the nano-iron powder and the hollow structure of the halloysite nanotube form air barrier through one way, so that the sound insulation effect is enhanced, and the heat insulation effect is better.
In comparative example 3, compared with example 3, the sol-gel reaction was not carried out to produce silica xerogel, and a porous structure was not obtained, so that the sound insulation and heat insulation effects were significantly reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The preparation method of the building energy-saving sound insulation material is characterized by comprising the following steps:
s1, preparation of nano iron: adding a surfactant and a complexing agent into a ferric iron solution, uniformly mixing, adding a sodium borohydride solution, controlling the reaction temperature to be 15-30 ℃, separating a magnet when hydrogen is completely released, washing and drying to obtain nano iron powder;
s2, preparing a modified nano material: adding the nano iron powder and the halloysite nanotube prepared in the step S1 into an ethanol solution containing a silane coupling agent, heating to 70-90 ℃, reacting for 1-3h, separating by using a magnet, washing, and drying to obtain a modified nano material; the mass ratio of the nanometer iron powder to the halloysite nanotube is 10: (3-7);
s3, preparing the PBT-modified nano-iron compound: heating the PBT to be molten, adding the modified nano material prepared in the step S2, stirring and mixing uniformly, and then performing melt extrusion granulation, crushing and porphyrizing to obtain a PBT-modified nano material compound; the mass ratio of the PBT to the modified nano material is 10: (5-12);
s4, preparing the energy-saving and sound-insulating building material: adding the PBT-modified nano material composite prepared in the step S3 into an ethanol solution containing aminosilane, stirring and mixing uniformly, adding ammonia water to adjust the pH value to 8-10, heating to 50-60 ℃, reacting for 7-9h, vacuum drying at the temperature of 70-90 ℃ for 10-15h, and crushing to obtain the building energy-saving sound insulation material; the mass-volume ratio of the PBT-modified nano material compound to the ethanol solution containing aminosilane is 1: (1-2) g/mL.
2. The method according to claim 1, wherein Fe in the ferric iron solution in step S1 is 3+ The mass concentration of the substance(s) is 0.1-0.5mol/L; the surfactant is selected from at least one of sodium dodecyl sulfonate, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium hexadecyl benzene sulfonate, sodium hexadecyl sulfate, sodium octadecyl benzene sulfonate and sodium octadecyl benzene sulfonate; the complexing agent is selected from at least one of ammonium chloride citrate and disodium EDTA; the mass concentration of the sodium borohydride solution is 0.6-3mol/L.
3. The production method according to claim 1, wherein the mass fraction of the silane coupling agent in the ethanol solution containing the silane coupling agent in step S2 is 4 to 7wt%; the silane coupling agent is a silane coupling agent with amino groups and is selected from at least one of KH550, KH792 and DL 602.
4. The method of claim 1, wherein the pulverizing in step S3 is to a particle size of 10-100 μm.
5. The method according to claim 1, wherein the aminosilane in step S4 is at least one selected from the group consisting of γ -aminopropyltrimethoxysilane, γ -aminopropyltriethoxysilane, N- β (aminoethyl) - γ -aminopropyltrimethoxysilane, N- β (aminoethyl) - γ -aminopropyltriethoxysilane, N- β (aminoethyl) - γ -aminopropylmethyldimethoxysilane, N- β (aminoethyl) - γ -aminopropylmethyldiethoxysilane, and divinyltriaminopropyltrimethoxysilane; the mass fraction of the aminosilane in the aminosilane-containing ethanol solution is 35-60wt%.
6. The preparation method according to claim 5, wherein the aminosilane is a compound mixture of gamma-aminopropyltrimethoxysilane and diethylenetriaminopropyltrimethoxysilane, and the mass ratio of the aminosilane to the aminosilane is (1-3): 1.
7. the method according to claim 1, wherein the washing step is washing with deionized water, ethanol, and deionized water in this order.
8. An energy-saving sound-insulating material for buildings, which is prepared by the preparation method according to any one of claims 1 to 7.
9. Use of the building energy-saving sound-insulating material according to claim 8 in sound-insulating coatings, sound-insulating boards and sound-insulating walls.
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