CN111704427B - Inner wall partition board and preparation method thereof - Google Patents

Inner wall partition board and preparation method thereof Download PDF

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Publication number
CN111704427B
CN111704427B CN202010437541.6A CN202010437541A CN111704427B CN 111704427 B CN111704427 B CN 111704427B CN 202010437541 A CN202010437541 A CN 202010437541A CN 111704427 B CN111704427 B CN 111704427B
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parts
layer
sound
sound insulation
insulation inner
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CN111704427A (en
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杨新成
邵明松
谢思松
赵辉
谢绍斌
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/28—Polysaccharides or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • 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
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • 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
    • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
    • E04B2/7401—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using panels without a frame or supporting posts, with or without upper or lower edge locating rails
    • E04B2/7403—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using panels without a frame or supporting posts, with or without upper or lower edge locating rails with special measures for sound or thermal insulation including fire protection
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/288—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
    • E04C2/2885—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material with the insulating material being completely surrounded by, or embedded in, a stone-like material, e.g. the insulating material being discontinuous
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/60—Agents for protection against chemical, physical or biological attack
    • C04B2103/65—Water proofers or repellants
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/52—Sound-insulating materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Civil Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Electromagnetism (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Building Environments (AREA)

Abstract

The invention relates to a novel inner wall partition board and a preparation method thereof, which relate to the field of inner wall partition boards and aim to solve the problem of poor sound insulation effect of the existing inner wall partition board; the support outer layer comprises, by weight, 20-45 parts of expanded perlite, 20-45 parts of desulfurized gypsum, 15-35 parts of cement, 1-10 parts of plant fiber, 1-5 parts of plant binder and 1-5 parts of waterproof agent; the sound insulation inner layer comprises the following raw materials in parts by weight: 15-32 parts of expanded perlite, 10-23 parts of foamed aluminum particles, 14-26 parts of hydrophobic sound-absorbing cotton particles, 2-8 parts of carboxymethyl starch ether and 2-3 parts of an anti-seepage agent. According to the invention, through the specific component proportion and the preparation method, the prepared inner wall partition board has good mechanical property, meets the basic use of the inner wall partition board, and has good sound insulation property.

Description

Inner wall partition board and preparation method thereof
Technical Field
The invention relates to the technical field of inner wall partition boards, in particular to an inner wall partition board and a preparation method thereof.
Background
The inner wall partition board is used as a novel energy-saving wall material and is a wall material with the appearance like a hollow floor slab, and the existing inner wall partition board is formed by pressing and curing a plurality of industrial waste residues such as harmless phosphogypsum, light steel slag, fly ash and the like through variable-frequency steam; the composite wall has the advantages of light weight, high strength, multiple environmental protection, heat preservation, heat insulation, sound insulation, breathing and humidity regulation, fire prevention, rapid construction, wall body cost reduction and the like, and is widely applied to various building fields.
The prior Chinese patent with the application number of CN201910987975.0 discloses a preparation method of a foamed cement inner wall partition board, which comprises the following steps: (1) preparing activated rice hull ash; (2) treating coal gangue powder; (3) pouring cement, glass fiber, fine sand and gangue powder into a stirrer, uniformly stirring, adding a water reducing agent and activated rice hull ash, continuously stirring, adding water into the stirrer after uniformly stirring, adding a foaming agent, uniformly stirring, and standing for 40min to obtain slurry; (4) and injecting the obtained slurry into a mold, carrying out compression molding, and transferring to a curing room for curing after foaming is finished, thus obtaining the inner wall partition board with good heat insulation performance.
However, with the development of society, people have demands for basic living conditions such as heat preservation and the like, and people pay more attention to the quality of life, and because the urban modernization level is higher and higher, traffic is more and more developed, and noise becomes a large factor influencing the quality of life of people, how to improve the sound insulation performance of the inner wall partition board in the building is a great measure for improving the quality of life of people.
Disclosure of Invention
Aiming at the defects in the prior art, one of the purposes of the invention is to provide an inner wall partition and a preparation method thereof.
The above object of the present invention is achieved by the following technical solutions:
an inner wall partition board comprises a sound insulation inner layer and support outer layers positioned on two sides of the sound insulation inner layer;
the support outer layer comprises, by weight, 20-45 parts of expanded perlite, 20-45 parts of desulfurized gypsum, 15-35 parts of cement, 1-10 parts of plant fiber, 1-5 parts of plant binder and 1-5 parts of waterproof agent;
the sound insulation inner layer comprises the following raw materials in parts by weight: 15-32 parts of expanded perlite, 10-23 parts of foamed aluminum particles, 14-26 parts of hydrophobic sound-absorbing cotton particles, 2-8 parts of carboxymethyl starch ether and 2-3 parts of an anti-seepage agent.
By adopting the technical scheme, the outer support layers are positioned on two sides of the inner wall partition board, so that the inner wall partition board can be mechanically supported, and the mechanical strength of the inner wall partition board is ensured; the support skin can protect the sound insulation inlayer of inboard, reduces the damage of sound insulation inlayer for the sound insulation inlayer improves the sound-proof performance of interior wall baffle greatly.
In the outer support layer, the expanded perlite is used as a base material, and the expanded perlite is used as a natural acidic vitreous lava nonmetal mineral product, is a lightweight aggregate, can well reduce the weight of the inner wall partition board, has low thermal conductivity, can improve the thermal insulation performance of the inner wall partition board, and is safe and nontoxic; the desulfurized gypsum is used as a byproduct of wet desulphurization of the flue gas of the power plant, so that resources are saved, the desulfurized gypsum and cement can form gel, and the bonding strength of the outer layer structure of the support is improved; the plant fiber is used as plant tissue, is natural and nontoxic, has excellent performance and good toughness and dispersibility, and can be added into a support outer layer system to well improve the cracking resistance and strength of the support outer layer, also can well improve the surface adhesive force of the support outer layer and strengthen the connection strength between the support outer layer and the sound insulation inner layer; the vegetable adhesive is a natural vegetable adhesive, and water is used as a solvent, so that a high-viscosity sol solution can be formed, and the adhesive strength of the support outer layer system is improved; the waterproof agent is added when the supporting outer layer is solidified, the volume of the waterproof agent expands to fill the pores in the supporting outer layer system, and the strength of the supporting outer layer is further improved.
In the sound insulation inner layer, the expanded perlite is still used as a base material which is the same as that of the support outer layer, so that the bonding of the support outer layer and the sound insulation inner layer is facilitated; in addition, in the sound insulation inner layer, the carboxymethyl starch ether is added as a binder, so that the self binding strength of the sound insulation inner layer can be improved; moreover, the carboxymethyl starch ether can recover viscosity when meeting water, so that after the outer support layer is formed, the carboxymethyl starch ether can recover viscosity by spraying water mist, the sound insulation inner layer is conveniently adhered to the outer support layer, the integral structure of the inner wall partition plate is uniform, and the stress is more uniform; more importantly, in order to improve the sound insulation effect of the sound insulation inner layer, the foamed aluminum particles and the hydrophobic sound-absorbing cotton particles are added, and both belong to porous materials, so that sound energy can be effectively converted into heat energy, and the sound insulation effect is achieved; meanwhile, the foamed aluminum particles and the hydrophobic sound-absorbing cotton particles are both made of hydrophobic materials, so that when the slurry of the sound-insulating inner layer is prepared, the infiltration of water into the pores inside the hydrophobic sound-absorbing cotton particles and the hydrophobic sound-absorbing cotton particles can be reduced, the pore structures of the hydrophobic sound-absorbing cotton particles and the porous structures of the foamed aluminum particles are not damaged too much, and meanwhile, the anti-seepage agent is added, so that the infiltration of water into the hydrophobic sound-absorbing cotton particles and the porous structures of the foamed aluminum particles are further reduced, and the sound-insulating property of the inner wall partition plate is improved; meanwhile, the mechanical property of the sound insulation inner layer is greatly improved by adding the foamed aluminum particles.
Therefore, the inner wall partition board prepared by the method has good mechanical property, meets the basic use of the inner wall partition board, has good sound insulation property, and is safe and nontoxic in components and free of formaldehyde.
The invention is further provided that the inner wall partition comprises a sound insulation inner layer and support outer layers positioned at two sides of the sound insulation inner layer;
the support outer layer comprises the following components, by weight, 33-39 parts of expanded perlite, 30-36 parts of desulfurized gypsum, 18-23 parts of cement, 3-6 parts of plant fiber, 1-3 parts of plant binder and 2-4 parts of a waterproof agent;
the sound insulation inner layer comprises the following raw materials in parts by weight: 15-32 parts of expanded perlite, 16-22 parts of foamed aluminum particles, 16-22 parts of hydrophobic sound-absorbing cotton particles, 3-6 parts of carboxymethyl starch ether and 1-2 parts of an anti-seepage agent.
By adopting the technical scheme, the content of each component in the outer supporting layer and the inner sound insulation layer is further optimized, so that the components are better compatible, and the mechanical property and the sound insulation property of the inner wall partition plate can be further improved.
The invention is further provided that the inner wall partition comprises a sound insulation inner layer and support outer layers positioned at two sides of the sound insulation inner layer;
the support outer layer comprises the following components, by weight, 35 parts of expanded perlite, 35 parts of desulfurized gypsum, 20 parts of cement, 5 parts of plant fiber, 2 parts of plant binder and 3 parts of waterproof agent;
the sound insulation inner layer comprises the following raw materials in parts by weight: 28 parts of expanded perlite, 15 parts of foamed aluminum particles, 20 parts of hydrophobic sound-absorbing cotton particles, 6 parts of carboxymethyl starch ether and 2 parts of an anti-seepage agent.
By adopting the technical scheme, the contents of the components in the outer supporting layer and the inner sound insulation layer are further determined, so that the components are optimally compatible, and the mechanical property and the sound insulation property of the inner wall partition plate can be further improved.
The invention is further configured that the hydrophobic sound-absorbing cotton particles are centrifugal glass cotton.
By adopting the technical scheme, the centrifugal glass wool is used as one of the glass wool, so that the sound absorption performance and the hydrophobic performance are good, the centrifugal glass wool also has the advantages of flame retardance, no toxicity, heat preservation and the like, and the service performance of the inner wall partition plate can be further improved.
The invention is further configured in that the particle size of the foamed aluminum particles is 2-5 mm.
Through adopting above-mentioned technical scheme, inject the particle diameter of foamed aluminum granule for foamed aluminum can disperse in the inlayer system that gives sound insulation uniformly, when playing good syllable-dividing effect, can further improve the intensity of interior wall baffle.
The invention is further configured that the particle size of the hydrophobic sound-absorbing cotton particles is 8-15 mm.
By adopting the technical scheme, the particle size of the hydrophobic sound-absorbing cotton particles is optimized, so that the hydrophobic sound-absorbing cotton particles have proper specific surface area and surface energy, the hydrophobic sound-absorbing cotton particles can be uniformly dispersed in a sound-insulating inner layer system, and the damage of other components to the pore structure of the hydrophobic sound-absorbing cotton particles is reduced.
The invention is further configured that the plant adhesive is one of guar gum, carboxyl starch glue and water-resistant starch glue.
By adopting the technical scheme, the guar gum is a water-soluble high-molecular polymer, is safe and non-toxic, can easily form high viscosity at low concentration, and can well bond components in the outer support layer; the carboxyl starch glue is one of starch glue, has good adhesive property to the components of the outer support layer after being dissolved in water, has high adhesive strength, and can well improve the strength of the outer support layer; the water-resistant starch glue is also used as a starch glue, and not only has good bonding performance, but also has good water resistance and high glue solution stability.
The invention is further provided that the anti-seepage agent comprises the following components in parts by weight: 15-23 parts of polydimethylsiloxane and 10-19 parts of liquid silicone rubber.
By adopting the technical scheme, the polydimethylsiloxane and the liquid silicone rubber are both one of organic silicon, have good hydrophobic performance, have small surface tension, and can be well paved on the surfaces of hydrophobic sound-absorbing cotton particles and foamed aluminum particles, so that the generation of capillary phenomenon is reduced; therefore, the polydimethylsiloxane and the liquid silicon rubber can effectively reduce the contact of water with the hydrophobic sound-absorbing cotton particles and the foamed aluminum particles, so that the hydrophobic sound-absorbing cotton particles and the foamed aluminum particles have good pore structures, and the sound insulation effect of the inner wall partition plate is improved.
Another object of the present invention is a method for preparing an interior wall partition, comprising the steps of:
preparing a support outer layer:
adding expanded perlite, desulfurized gypsum, cement and plant fiber into a mixer, dry-mixing for 3 +/-1 minutes at the rotating speed of 50 +/-4 revolutions per minute, then adding water into the mixer, continuously stirring for 5 +/-1 minutes, adding a plant binder and a waterproof agent, stirring for 5 +/-1 minutes to obtain wet sticky granules, and finally sending the wet sticky granules into a plate pressing trigger for pressing, heat curing and drying to obtain a supporting outer-layer plate; adding 100 +/-10 kilograms of water into each cubic meter of the outer supporting plate;
preparing an inner wall partition board:
adding foamed aluminum particles, hydrophobic sound-absorbing cotton particles and an anti-seepage agent into a mixer, mixing for 3 +/-1 minutes at the rotating speed of 60 +/-4 revolutions per minute, then adding expanded perlite and water into the mixer, stirring and mixing for 5 +/-1 minutes, finally adding carboxymethyl starch ether, stirring for 3 +/-1 minutes, and then placing the mixture for 12 +/-1 hours in an environment with the temperature of 25 +/-2 ℃ and the humidity of 36 +/-2% to obtain an inner-layer paving material;
flatly placing a first layer of supporting outer-layer plate, spraying water mist to the upper surface of the supporting outer-layer plate, flatly placing an inner-layer auxiliary material on the upper surface of the supporting outer-layer plate, flatly pressing and regulating to form a sound-insulation inner-layer prefabricated plate, spraying water mist to the sound-insulation inner-layer prefabricated plate, flatly placing a second layer of supporting outer-layer plate on the sound-insulation inner-layer prefabricated plate, compacting and regulating, and drying to obtain an inner-layer partition plate; 75 plus or minus 5 kilograms of water is added into each cubic meter of the sound insulation inner layer prefabricated slab.
By adopting the technical scheme, the formed supporting outer layer is prepared in advance, so that the overall structure of the inner wall partition board can be grasped, and the shape regularity of the inner wall partition board is improved; in addition, when the outer support layer and the inner sound insulation layer are compounded, the wet sticky particle material of the inner sound insulation layer is solidified for a period of time, so that the wet sticky particle material has good shaping performance and proper fluidity, and the outer support layer and the inner sound insulation layer can be well compounded and simultaneously are favorable for shaping the inner sound insulation layer; in addition, in the preparation process of the wet sticky particle material of the sound insulation inner layer, the anti-seepage agent is mixed with the foamed aluminum particles and the hydrophobic sound absorption cotton particles in advance, so that the influence of moisture on the pore structures of the foamed aluminum particles and the hydrophobic sound absorption cotton particles can be further reduced, and the sound insulation performance of the inner wall partition board is improved.
In summary, the invention includes at least one of the following beneficial technical effects:
1. according to the invention, the specific supporting outer layers are prepared, so that the supporting outer layers are positioned at two sides of the inner wall partition board, the inner wall partition board can be mechanically supported, and the mechanical strength of the inner wall partition board is ensured; meanwhile, the specific sound insulation inner layer is prepared, the sound insulation inner layer on the inner side of the partition board is protected by the support outer layer, damage to the sound insulation inner layer is reduced, and meanwhile, the sound insulation performance of the inner wall partition board is greatly improved by the sound insulation inner layer;
2. in the invention, foamed aluminum particles and hydrophobic sound-absorbing cotton particles are added into a sound-insulating inner layer system, and the foamed aluminum particles and the hydrophobic sound-absorbing cotton particles have good sound-insulating materials; meanwhile, the foamed aluminum particles and the hydrophobic sound-absorbing cotton particles are both made of hydrophobic materials, so that when the slurry of the sound-insulating inner layer is prepared, the permeation of water into the pores inside the hydrophobic sound-absorbing cotton particles and the foamed aluminum particles can be reduced, the pore structures of the hydrophobic sound-absorbing cotton particles and the foamed aluminum particles are not damaged too much, and meanwhile, the permeation-preventing agent is added, so that the permeation of water into the hydrophobic sound-absorbing cotton particles and the foamed aluminum particles is further reduced, and the sound-insulating property of the inner wall partition plate is improved;
3. in the process of preparing the inner wall partition, the wet sticky particle material of the sound-insulating inner layer is cured for a period of time, so that the wet sticky particle material has good shaping performance and proper fluidity, the outer supporting layer and the sound-insulating inner layer can be well compounded, and the strength of the inner wall partition is improved.
Detailed Description
The present invention will be described in further detail with reference to examples.
Figure GDA0003463010900000051
The first embodiment is as follows:
the invention discloses an inner wall partition board, which comprises a sound insulation inner layer and support outer layers positioned at two sides of the sound insulation inner layer, wherein the thickness ratio of the sound insulation inner layer to the support outer layers is 2; 1;
the support outer layer comprises the following components, by weight, 20 parts of expanded perlite, 20 parts of desulfurized gypsum, 15 parts of cement, 1 part of plant fiber (lignin fiber), 1 part of plant binder (guar gum) and 1 part of a waterproof agent;
the sound insulation inner layer comprises the following raw materials in parts by weight: 15 parts of expanded perlite, 10 parts of foamed aluminum particles with the particle size of 2mm, 14 parts of hydrophobic sound-absorbing cotton particles (centrifugal glass cotton) with the particle size of 8mm, 2 parts of carboxymethyl starch ether and 2 parts of an anti-seepage agent.
Wherein the anti-seepage agent comprises the following components in parts by weight: 15 parts of polydimethylsiloxane and 10 parts of liquid silicone rubber.
A preparation method of an inner wall partition board comprises the following steps:
preparing a support outer layer:
adding expanded perlite, desulfurized gypsum, cement and plant fiber into a mixer, dry-mixing for 3 minutes at the rotating speed of 50 revolutions per minute, adding water into the mixer, continuously stirring for 5 minutes, adding a plant binder and a waterproof agent, stirring for 5 minutes to obtain wet sticky granules, and finally feeding the wet sticky granules into a plate pressing trigger for pressing, heat curing and drying to obtain a supporting outer-layer plate; 100 kilograms of water is added into each cubic meter of the supporting outer layer plate;
preparing an inner wall partition board:
adding foamed aluminum particles, hydrophobic sound-absorbing cotton particles and an anti-seepage agent into a mixer, mixing for 3 minutes at the rotating speed of 60 revolutions per minute, then adding expanded perlite and water into the mixer, stirring and mixing for 5 minutes, finally adding carboxymethyl starch ether, stirring for 3 minutes, and then placing the mixture for 12 hours in an environment with the temperature of 25 ℃ and the humidity of 36% to obtain an inner layer paving material; flatly placing a first layer of supporting outer-layer plate, spraying water mist to the upper surface of the supporting outer-layer plate, flatly placing an inner-layer auxiliary material on the upper surface of the supporting outer-layer plate, flatly pressing and regulating to form a sound-insulation inner-layer prefabricated plate, spraying water mist to the sound-insulation inner-layer prefabricated plate, flatly placing a second layer of supporting outer-layer plate on the sound-insulation inner-layer prefabricated plate, compacting and regulating, and drying to obtain an inner-layer partition plate; 75 kilograms of water is added into each cubic meter of the sound insulation inner layer prefabricated plate.
Example two:
the invention discloses an inner wall partition board, which comprises a sound insulation inner layer and support outer layers positioned at two sides of the sound insulation inner layer, wherein the thickness ratio of the sound insulation inner layer to the support outer layers is 2; 1;
the support outer layer comprises 33 parts of expanded perlite, 30 parts of desulfurized gypsum, 18 parts of cement, 3 parts of plant fiber (lignin fiber), 1 part of plant binder (carboxyl starch glue) and 2 parts of a waterproof agent in parts by weight;
the sound insulation inner layer comprises the following raw materials in parts by weight: 15 parts of expanded perlite, 16 parts of foamed aluminum particles with the particle size of 3mm, 16 parts of hydrophobic sound-absorbing cotton particles (centrifugal glass cotton) with the particle size of 10mm, 3 parts of carboxymethyl starch ether and 1 part of an anti-seepage agent.
Wherein the anti-seepage agent comprises the following components in parts by weight: 18 parts of polydimethylsiloxane and 13 parts of liquid silicone rubber.
A preparation method of an inner wall partition board comprises the following steps:
preparing a support outer layer:
adding expanded perlite, desulfurized gypsum, cement and plant fiber into a mixer, dry-mixing for 4 minutes at the rotating speed of 52 revolutions per minute, adding water into the mixer, continuously stirring for 6 minutes, adding a plant binder and a waterproof agent, stirring for 5 minutes to obtain wet sticky granules, and finally feeding the wet sticky granules into a plate pressing trigger for pressing, heat curing and drying to obtain a supporting outer-layer plate; adding 110 kg of water into each cubic meter of the outer supporting plate;
preparing an inner wall partition board:
adding foamed aluminum particles, hydrophobic sound-absorbing cotton particles and an anti-seepage agent into a mixer, mixing for 2 minutes at a rotating speed of 63 revolutions per minute, then adding expanded perlite and water into the mixer, stirring and mixing for 6 minutes, finally adding carboxymethyl starch ether, stirring for 3 minutes, and then placing the mixture for 13 hours in an environment with the temperature of 26 ℃ and the humidity of 38% to obtain an inner layer paving material; flatly placing a first layer of supporting outer-layer plate, spraying water mist to the upper surface of the supporting outer-layer plate, flatly placing an inner-layer auxiliary material on the upper surface of the supporting outer-layer plate, flatly pressing and regulating to form a sound-insulation inner-layer prefabricated plate, spraying water mist to the sound-insulation inner-layer prefabricated plate, flatly placing a second layer of supporting outer-layer plate on the sound-insulation inner-layer prefabricated plate, compacting and regulating, and drying to obtain an inner-layer partition plate; 80 kilograms of water is added into each cubic meter of the sound insulation inner layer precast slab.
Example three:
the invention discloses an inner wall partition board, which comprises a sound insulation inner layer and support outer layers positioned at two sides of the sound insulation inner layer, wherein the thickness ratio of the sound insulation inner layer to the support outer layers is 2; 1;
the support outer layer comprises 35 parts of expanded perlite, 35 parts of desulfurized gypsum, 20 parts of cement, 5 parts of (lignin fiber) plant fiber, 2 parts of plant binder (carboxyl starch glue) and 3 parts of a waterproof agent in parts by weight;
the sound insulation inner layer comprises the following raw materials in parts by weight: 28 parts of expanded perlite, 15 parts of foamed aluminum particles with the particle size of 4mm, 20 parts of hydrophobic sound-absorbing cotton particles (centrifugal glass cotton) with the particle size of 11mm, 6 parts of carboxymethyl starch ether and 2 parts of an anti-seepage agent.
Wherein the anti-seepage agent comprises the following components in parts by weight: 19 parts of polydimethylsiloxane and 15 parts of liquid silicone rubber.
A preparation method of an inner wall partition board comprises the following steps:
preparing a support outer layer:
adding expanded perlite, desulfurized gypsum, cement and plant fiber into a mixer, dry-mixing for 3 minutes at the rotating speed of 52 revolutions per minute, then adding water into the mixer, continuously stirring for 6 minutes, adding a plant binder and a waterproof agent, stirring for 5 minutes to obtain wet sticky granules, and finally sending the wet sticky granules into a plate press trigger for pressing, heat curing and drying to obtain a support outer-layer plate; 100 kilograms of water is added into each cubic meter of the supporting outer layer plate;
preparing an inner wall partition board:
adding foamed aluminum particles, hydrophobic sound-absorbing cotton particles and an anti-seepage agent into a mixer, mixing for 3 minutes at the rotating speed of 60 revolutions per minute, then adding expanded perlite and water into the mixer, stirring and mixing for 5 minutes, finally adding carboxymethyl starch ether, stirring for 3 minutes, and then placing the mixture for 12 hours in an environment with the temperature of 25 ℃ and the humidity of 36% to obtain an inner layer paving material; flatly placing a first layer of supporting outer-layer plate, spraying water mist to the upper surface of the supporting outer-layer plate, flatly placing an inner-layer auxiliary material on the upper surface of the supporting outer-layer plate, flatly pressing and regulating to form a sound-insulation inner-layer prefabricated plate, spraying water mist to the sound-insulation inner-layer prefabricated plate, flatly placing a second layer of supporting outer-layer plate on the sound-insulation inner-layer prefabricated plate, compacting and regulating, and drying to obtain an inner-layer partition plate; 75 kilograms of water is added into each cubic meter of the sound insulation inner layer prefabricated plate.
Example four:
the invention discloses an inner wall partition board, which comprises a sound insulation inner layer and support outer layers positioned at two sides of the sound insulation inner layer, wherein the thickness ratio of the sound insulation inner layer to the support outer layers is 2; 1;
the support outer layer comprises 39 parts of expanded perlite, 36 parts of desulfurized gypsum, 23 parts of cement, 6 parts of plant fiber (lignin fiber), 3 parts of plant binder (water-resistant starch glue) and 4 parts of a waterproof agent in parts by weight;
the sound insulation inner layer comprises the following raw materials in parts by weight: 32 parts of expanded perlite, 22 parts of foamed aluminum particles with the particle size of 4mm, 22 parts of hydrophobic sound-absorbing cotton particles (centrifugal glass cotton) with the particle size of 13mm, 6 parts of carboxymethyl starch ether and 2 parts of an anti-seepage agent.
Wherein the anti-seepage agent comprises the following components in parts by weight: 20 parts of polydimethylsiloxane and 18 parts of liquid silicone rubber.
A preparation method of an inner wall partition board comprises the following steps:
preparing a support outer layer:
adding expanded perlite, desulfurized gypsum, cement and plant fiber into a mixer, dry-mixing for 4 minutes at the rotating speed of 50 revolutions per minute, then adding water into the mixer, continuously stirring for 6 minutes, adding a plant binder and a waterproof agent, stirring for 6 minutes to obtain wet sticky granules, and finally sending the wet sticky granules into a plate press trigger for pressing, heat curing and drying to obtain a support outer-layer plate; adding 110 kg of water into each cubic meter of the outer supporting plate;
preparing an inner wall partition board:
adding foamed aluminum particles, hydrophobic sound-absorbing cotton particles and an anti-seepage agent into a mixer, mixing for 4 minutes at the rotating speed of 64 revolutions per minute, then adding expanded perlite and water into the mixer, stirring and mixing for 5 minutes, finally adding carboxymethyl starch ether, stirring for 3 minutes, and then placing the mixture for 13 hours in an environment with the temperature of 25 ℃ and the humidity of 38% to obtain an inner layer paving material; flatly placing a first layer of supporting outer-layer plate, spraying water mist to the upper surface of the supporting outer-layer plate, flatly placing an inner-layer auxiliary material on the upper surface of the supporting outer-layer plate, flatly pressing and regulating to form a sound-insulation inner-layer prefabricated plate, spraying water mist to the sound-insulation inner-layer prefabricated plate, flatly placing a second layer of supporting outer-layer plate on the sound-insulation inner-layer prefabricated plate, compacting and regulating, and drying to obtain an inner-layer partition plate; 70 kilograms of water is added into each cubic meter of the sound insulation inner layer precast slab.
Example five:
the invention discloses an inner wall partition board, which comprises a sound insulation inner layer and support outer layers positioned at two sides of the sound insulation inner layer, wherein the thickness ratio of the sound insulation inner layer to the support outer layers is 2; 1;
the support outer layer comprises the following raw materials, by weight, 45 parts of expanded perlite, 45 parts of desulfurized gypsum, 35 parts of cement, 10 parts of plant fiber (lignin fiber), 5 parts of plant binder (water-resistant starch glue) and 5 parts of a waterproof agent;
the sound insulation inner layer comprises the following raw materials in parts by weight: 32 parts of expanded perlite, 23 parts of foamed aluminum particles with the particle size of 5mm, 26 parts of hydrophobic sound-absorbing cotton particles (centrifugal glass cotton) with the particle size of 15mm, 8 parts of carboxymethyl starch ether and 3 parts of an impermeable agent.
Wherein the anti-seepage agent comprises the following components in parts by weight: 23 parts of polydimethylsiloxane and 19 parts of liquid silicone rubber.
A preparation method of an inner wall partition board comprises the following steps:
preparing a support outer layer:
adding expanded perlite, desulfurized gypsum, cement and plant fiber into a mixer, dry-mixing for 3 minutes at the rotating speed of 50 revolutions per minute, adding water into the mixer, continuously stirring for 5 minutes, adding a plant binder and a waterproof agent, stirring for 5 minutes to obtain wet sticky granules, and finally feeding the wet sticky granules into a plate pressing trigger for pressing, heat curing and drying to obtain a supporting outer-layer plate; 100 kilograms of water is added into each cubic meter of the supporting outer layer plate;
preparing an inner wall partition board:
adding foamed aluminum particles, hydrophobic sound-absorbing cotton particles and an anti-seepage agent into a mixer, mixing for 4 minutes at a rotating speed of 63 revolutions per minute, then adding expanded perlite and water into the mixer, stirring and mixing for 6 minutes, finally adding carboxymethyl starch ether, stirring for 3 minutes, and then placing the mixture for 13 hours in an environment with the temperature of 25 ℃ and the humidity of 36% to obtain an inner layer paving material; flatly placing a first layer of supporting outer-layer plate, spraying water mist to the upper surface of the supporting outer-layer plate, flatly placing an inner-layer auxiliary material on the upper surface of the supporting outer-layer plate, flatly pressing and regulating to form a sound-insulation inner-layer prefabricated plate, spraying water mist to the sound-insulation inner-layer prefabricated plate, flatly placing a second layer of supporting outer-layer plate on the sound-insulation inner-layer prefabricated plate, compacting and regulating, and drying to obtain an inner-layer partition plate; 80 kilograms of water is added into each cubic meter of the sound insulation inner layer precast slab.
Comparative example one:
compared with the first embodiment, no foamed aluminum particles are added into the sound-insulating inner layer.
Comparative example two:
compared with the first embodiment, the sound insulation inner layer is not added with the hydrophobic sound absorption cotton particles.
Comparative example three:
compared with the first embodiment, the sound insulation inner layer is not added with the hydrophobic sound absorption cotton particles and the foamed aluminum particles.
Comparative example four:
compared with the first embodiment, the foamed aluminum particles are replaced by the same amount of hydrophobic sound absorption cotton particles in the sound insulation inner layer.
Comparative example five:
compared with the first embodiment, in the sound-proof inner layer, the hydrophobic sound-absorbing cotton particles are replaced by the same amount of foamed aluminum particles.
Comparative example six:
compared with the first embodiment, in the sound insulation inner layer, the hydrophobic sound absorption cotton particles are replaced by the same amount of hydrophilic polyurethane sponge particles.
Comparative example seven:
compared with the first embodiment, no anti-seepage agent is added into the sound insulation inner layer.
Comparative example eight:
compared with the first embodiment, the particle size of the foamed aluminum particles in the sound insulation inner layer is 1 mm.
Comparative example nine:
compared with the first embodiment, the particle size of the foamed aluminum particles in the sound insulation inner layer is 6 mm.
Comparative example ten:
compared with the first embodiment, in the sound insulation inner layer, the particle size of the hydrophobic sound absorption cotton particles is 5 mm.
Comparative example eleven:
compared with the first embodiment, in the sound insulation inner layer, the particle size of the hydrophobic sound absorption cotton particles is 17 mm.
Comparative example twelve:
compared with the first embodiment, the step of placing the mixture in an environment with the temperature of 25 ℃ and the humidity of 36% for 12 hours is reduced in the process of preparing the inner wall partition.
And (3) performance detection:
the compression strength (MPa) and the air-weighted sound insulation (dB) of the sheets in examples one to five and comparative examples one to twelve were measured according to the general technical rules for lightweight laths for building partitions of JG T169-2016.
Figure GDA0003463010900000101
From the test results of the first to fifth examples, it can be seen that the inner wall partition of the present invention has not only good strength but also excellent sound insulation performance, wherein the inner cavity partition prepared in the third example has the best performance.
From the test results of example one and comparative examples one to four, it can be seen that the addition of the predetermined amount of the foamed aluminum particles and the hydrophobic sound-absorbing cotton particles in the present invention effectively improves the sound-insulating property of the interior wall partition, and the addition of the foamed aluminum particles also effectively improves the strength of the interior wall partition.
According to the first embodiment, the seventh embodiment and the sixth embodiment, the hydrophobic property of the hydrophobic sound-absorbing cotton particles can improve the sound-insulating property of the inner wall partition, and the same anti-seepage agent is added to reduce the influence of moisture on the pore structures of the foamed aluminum particles and the hydrophobic sound-absorbing cotton particles, so that the sound-insulating property of the inner wall partition is improved.
According to the eighth to eleventh comparative examples, the pore size ranges of the foamed aluminum particles and the hydrophobic sound-absorbing cotton particles specified in the invention also effectively improve the sound-insulating property of the interior wall partition.
Meanwhile, as can be seen from the twelfth comparative example, the strength and the sound insulation performance of the inner wall partition board are effectively improved by the preparation method of the invention.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (6)

1. An interior wall partition characterized by: comprises a sound insulation inner layer and a support outer layer positioned at two sides of the sound insulation inner layer;
the support outer layer comprises, by weight, 20-45 parts of expanded perlite, 20-45 parts of desulfurized gypsum, 15-35 parts of cement, 1-10 parts of plant fiber, 1-5 parts of plant binder and 1-5 parts of waterproof agent;
the sound insulation inner layer comprises the following raw materials in parts by weight: 15-32 parts of expanded perlite, 10-23 parts of foamed aluminum particles, 14-26 parts of hydrophobic sound-absorbing cotton particles, 2-8 parts of carboxymethyl starch ether and 2-3 parts of an anti-seepage agent;
the particle size of the foamed aluminum particles is 2-5 mm; the particle size of the hydrophobic sound-absorbing cotton particles is 8-15 mm; the anti-seepage agent comprises the following components in parts by weight: 15-23 parts of polydimethylsiloxane and 10-19 parts of liquid silicone rubber.
2. An interior wall panel according to claim 1, wherein: comprises a sound insulation inner layer and a support outer layer positioned at two sides of the sound insulation inner layer;
the support outer layer comprises the following components, by weight, 33-39 parts of expanded perlite, 30-36 parts of desulfurized gypsum, 18-23 parts of cement, 3-6 parts of plant fiber, 1-3 parts of plant binder and 2-4 parts of a waterproof agent;
the sound insulation inner layer comprises the following raw materials in parts by weight: 15-32 parts of expanded perlite, 16-22 parts of foamed aluminum particles, 16-22 parts of hydrophobic sound-absorbing cotton particles, 3-6 parts of carboxymethyl starch ether and 1-2 parts of an anti-seepage agent.
3. An interior wall panel according to claim 2, wherein: comprises a sound insulation inner layer and a support outer layer positioned at two sides of the sound insulation inner layer;
the support outer layer comprises the following components, by weight, 35 parts of expanded perlite, 35 parts of desulfurized gypsum, 20 parts of cement, 5 parts of plant fiber, 2 parts of plant binder and 3 parts of waterproof agent;
the sound insulation inner layer comprises the following raw materials in parts by weight: 28 parts of expanded perlite, 15 parts of foamed aluminum particles, 20 parts of hydrophobic sound-absorbing cotton particles, 6 parts of carboxymethyl starch ether and 2 parts of an anti-seepage agent.
4. An interior wall panel according to claim 1, wherein: the hydrophobic sound-absorbing cotton particles are centrifugal glass cotton.
5. An interior wall panel according to claim 1, wherein: the plant binder is one of guar gum, carboxyl starch glue and water-resistant starch glue.
6. A method of manufacturing an interior wall partition according to any one of claims 1 to 5, comprising the steps of:
preparing a support outer layer:
adding expanded perlite, desulfurized gypsum, cement and plant fiber into a mixer, dry-mixing for 3 +/-1 minutes at the rotating speed of 50 +/-4 revolutions per minute, then adding water into the mixer, continuously stirring for 5 +/-1 minutes, adding a plant binder and a waterproof agent, stirring for 5 +/-1 minutes to obtain wet sticky granules, and finally sending the wet sticky granules into a plate pressing trigger for pressing, heat curing and drying to obtain a supporting outer-layer plate; adding 100 +/-10 kilograms of water into each cubic meter of the outer supporting plate;
preparing an inner wall partition board:
adding foamed aluminum particles, hydrophobic sound-absorbing cotton particles and an anti-seepage agent into a mixer, mixing for 3 +/-1 minutes at the rotating speed of 60 +/-4 revolutions per minute, then adding expanded perlite and water into the mixer, stirring and mixing for 5 +/-1 minutes, finally adding carboxymethyl starch ether, stirring for 3 +/-1 minutes, and then placing the mixture for 12 +/-1 hours in an environment with the temperature of 25 +/-2 ℃ and the humidity of 36 +/-2% to obtain an inner-layer paving material;
flatly placing a first layer of supporting outer-layer plate, spraying water mist to the upper surface of the supporting outer-layer plate, flatly placing an inner-layer auxiliary material on the upper surface of the supporting outer-layer plate, flatly pressing and regulating to form a sound-insulation inner-layer prefabricated plate, spraying water mist to the sound-insulation inner-layer prefabricated plate, flatly placing a second layer of supporting outer-layer plate on the sound-insulation inner-layer prefabricated plate, compacting and regulating, and drying to obtain an inner-layer partition plate; 75 plus or minus 5 kilograms of water is added into each cubic meter of the sound insulation inner layer prefabricated slab.
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