CN114889237B - Sound-insulating and sound-absorbing fibrilia inner wallboard and manufacturing method thereof - Google Patents

Sound-insulating and sound-absorbing fibrilia inner wallboard and manufacturing method thereof Download PDF

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CN114889237B
CN114889237B CN202210012905.5A CN202210012905A CN114889237B CN 114889237 B CN114889237 B CN 114889237B CN 202210012905 A CN202210012905 A CN 202210012905A CN 114889237 B CN114889237 B CN 114889237B
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fibrilia
layer
sound
polyvinyl chloride
parts
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CN114889237A (en
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庄理少
方勇
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JIANGYIN YANLI NEW MATERIAL TECHNOLOGY CO LTD
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JIANGYIN YANLI NEW MATERIAL TECHNOLOGY CO LTD
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45—Joining of substantially the whole surface of the articles
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    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
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    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
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    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • 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
    • E04B1/86—Sound-absorbing elements 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
    • 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
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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Textile Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
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  • Polymers & Plastics (AREA)
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Abstract

The invention discloses a sound-insulating and sound-absorbing fibrilia inner wallboard which comprises an upper non-woven fabric layer, a first fibrilia layer, a polyvinyl chloride sound-insulating layer, a second fibrilia layer and a lower non-woven fabric layer which are sequentially arranged, wherein the polyvinyl chloride sound-insulating layer comprises, by mass, 55-70 parts of polyvinyl chloride, 25-35 parts of polyurethane, 40-60 parts of nano silicon oxide, 0.5-3 parts of a silane coupling agent and 10-15 parts of a plasticizer. The invention also discloses a manufacturing method of the sound-insulation and sound-absorption fibrilia inner wallboard. The polyvinyl chloride sound insulation layer is embedded in the middle of two fibrilia layers, under the effect of non-woven fabrics and fibrilia, sound waves emitted by a sound source are less reflected, most of sound waves are transmitted through gaps inside fibers, after the sound waves act on the polyvinyl chloride sound insulation layer, macromolecular chains inside the polyvinyl chloride sound insulation layer vibrate, most of sound energy is consumed, and the sound insulation effect is achieved. The inner wallboard has the advantages of no pollution, good sound insulation effect and the like.

Description

Sound-insulating and sound-absorbing fibrilia inner wallboard and manufacturing method thereof
Technical Field
The invention relates to the technical field of inner wallboards, in particular to a sound-insulation and sound-absorption fibrilia inner wallboard and a manufacturing method thereof.
Background
Interior wallboard is a commonly used construction decorative material, typically medium density fiberboard, multi-layer plywood, and the like. Wherein, the medium density fiberboard is an artificial board which is prepared by mechanically separating wood or plant fiber, mixing adhesive, waterproofing agent and the like, and then shaping at high temperature and high pressure; the multi-layer wood plywood is a board formed by sticking and hot-pressing three or more layers of veneers or thin boards. Because the traditional wall decoration inner wall boards such as the medium density fiber board and the multi-layer wood splints adopt the adhesive in the manufacturing process, the adhesive in the inner wall boards can volatilize harmful gas after being manufactured, and certain negative effects can be caused on human health and environment. On the other hand, the conventional inner wallboard consumes a large amount of raw wood resources, and excessive consumption of raw wood resources can adversely affect the global ecological environment.
The interior wallboard with sound insulation effect is generally used in home, office or entertainment places, and is installed inside the original wall body to isolate external noise or prevent indoor noise from coming out. At present, more sound insulation inner wallboards on the market comprise a cavity type structural wallboard, sound insulation cotton, wallboards filled with glass cotton, a multi-layer clamping plate and the like, and the wallboards are required to be increased in density or thickened in thickness in order to achieve a good sound insulation effect, so that the sound insulation inner wallboard is not applicable to places with high sound insulation effect requirements.
Fiber boards manufactured by adopting fibrilia or chemical fiber through a non-woven technology are increasingly attractive due to environmental protection, and particularly, the fibrilia boards are manufactured. The fibrilia board is produced by combining the pretreated fibrilia through air-laying or net-laying technology, and then needling, rolling or hot-press molding. Because gaps exist among fibrilia in the fibrilia board, the reflection of sound waves on the fibrilia board is greatly reduced, and therefore, the fibrilia board shows better sound absorption effect. However, because the gaps inside the fibrilia plate are more, after the sound waves enter the fibrilia plate, besides part of the sound waves are attenuated by the internal friction loss, the other part of the sound waves can be transmitted out through the gaps among the fibrilia, so that the sound insulation effect of the fibrilia plate is relatively poor, and the sound insulation plate is not suitable for being applied to entertainment places or other occasions with high requirements on the sound insulation effect.
In summary, in order to protect the environment and to satisfy the special requirements of some places while ensuring the health of the human body, it is highly desirable to develop an environment-friendly inner wall panel with sound insulation effect.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and the polyvinyl chloride sound insulation layer is inserted into the fibrilia layer to manufacture the fibrilia composite board, the non-woven fabric layer is manufactured on the surface of the composite board, and the composite structure is used as a sound insulation inner wall board. The addition of the polyvinyl chloride sound insulation layer enables sound waves sent by a sound source to act with the polyvinyl chloride sound insulation layer when being transmitted outwards, and when the polyvinyl chloride and the polyurethane are subjected to sound wave vibration, the movement of a macromolecular chain can be triggered, so that the energy of the sound wave vibration is converted into heat energy, the effects of vibration reduction and noise reduction are achieved, the viscoelasticity of materials is increased, the surface density of the polyvinyl chloride layer is changed, and the effect of further increasing the sound insulation effect is achieved.
In order to achieve the aim, the technical scheme of the invention provides a sound-insulating and sound-absorbing fibrilia inner wallboard which is characterized by comprising an upper non-woven fabric layer, a first fibrilia layer, a polyvinyl chloride sound-insulating layer, a second fibrilia layer and a lower non-woven fabric layer which are sequentially arranged, wherein the polyvinyl chloride sound-insulating layer comprises, by mass, 55-70 parts of polyvinyl chloride, 25-35 parts of polyurethane, 40-60 parts of nano silicon oxide, 0.5-3 parts of a silane coupling agent and 10-15 parts of a plasticizer.
Further preferred techniquesThe proposal is that the surface density of the first fibrilia layer is 1.2-1.6 kg/m 2 The surface density of the second fibrilia layer is 1.8-2.0 kg/m 2 。
The further preferable technical scheme is that the components of the first fibrilia layer and the second fibrilia layer comprise 70-85 parts of fibrilia, 30-45 parts of polypropylene fiber, 18-30 parts of aramid fiber and 12-18 parts of polyester fiber according to parts by mass.
The further preferable technical scheme is that the first fibrilia layer, the polyvinyl chloride sound insulation layer and the second fibrilia layer are connected in a roll forming mode, and the upper non-woven fabric layer is connected with the first fibrilia layer, the lower non-woven fabric layer and the second fibrilia layer in a hot pressing composite mode.
The fibrilia board is a board which is newly developed in recent years and is formed by mixing fibrilia and a small amount of chemical fibers and then needling and rolling, and has the advantages of light weight, high toughness, flame retardance and no formaldehyde because no chemical adhesive is added in the production process, thus being widely applied to various fields of home decoration, train floors, automobile ornaments and the like. The applications of fibrilia boards in the field of home decoration boards, train floors and automobile decorations are not only because of the green environmental protection of fibrilia boards, but also because of their sound absorption properties. Because fibrilia plate is mostly made through non-woven process, there are more spaces between fibers in fibrilia plate, when sound wave that the sound source sent is transmitted to fibrilia plate, most sound wave is outwards transmitted through the clearance between fibers, and only less sound wave is reflected by fibrilia plate. When the sound waves are transmitted outwards through gaps among the fibers, the sound waves and the surfaces of the fibrilia generate internal friction, part of sound energy is converted into heat energy to be consumed, and the other part of sound energy is transmitted to the outside of the fibrilia plate through the gaps, so that the sound absorption effect of the fibrilia plate is good. On the other hand, the sound wave energy is transmitted to the outside of the board through the internal gaps of the fibrilia board, the sound insulation effect is relatively poor, and when the wall board is used as a wall board, the sound in the wall can still be heard from the outside of the wall, and the wall board is still unsuitable for places with high requirements on the sound insulation effect.
According to the invention, fibrilia is selected as a main material of the inner wallboard, a polyvinyl chloride sound insulation layer is embedded between two fibrilia layers, and the vibration of sound waves is weakened by utilizing the damping action of macromolecules in the polyvinyl chloride sound insulation layer, so that the sound insulation effect is achieved. The fibrilia inner wallboard has good sound insulation and sound absorption effects, and the main action mechanism is that when sound waves emitted by a sound source pass through the fibrilia inner wallboard, the upper non-woven fabric layer and the first fibrilia layer on the surface are manufactured through non-woven processes, more gaps are formed between the non-woven fabric layer and the first fibrilia layer, only a small part of the sound waves are reflected after reaching the upper non-woven fabric layer, and most of the sound waves are transmitted outwards through the gaps. During the transmission process, friction is generated between the sound waves and the non-woven fabric fibers and between the sound waves and the fibrilia, part of energy is consumed and converted into heat energy, and the other part of energy is still transmitted outwards in the form of sound waves. When sound waves are transmitted to the polyvinyl chloride sound insulation layer, the polyvinyl chloride and polyurethane can induce the movement of macromolecular chains after the vibration of the sound waves is sensed, so that the sound energy is consumed. After the polyvinyl chloride sound insulation layer, the energy of the sound wave is consumed mostly, and under the action of the second fibrilia plate and the lower non-woven fabric layer, the energy of the sound wave is further consumed, and the energy of the transmitted sound wave is smaller.
In the polyvinyl chloride sound insulation layer, different macromolecular chains are introduced into the polyvinyl chloride by adding polyurethane, after the vibration of the sound wave is sensed, the movement modes of the molecular chains of the polyurethane and the interaction between the polyurethane and the sound wave are different, so that more additional energy consumption can be generated when the sound wave moves, and the sound insulation effect is further improved. The addition of nano silicon oxide can change the viscoelasticity of the material and the surface density of the composite material, and the energy of the sound wave can be further consumed by the action of the nano silicon oxide and the sound wave. From the aspect of damping action of the material, the addition of polyurethane and nano silicon oxide can increase damping performance of the composite material, namely increase loss factor, change dynamic mechanical property of the composite material and adjust damping temperature range and glass transition temperature.
The technical scheme of the invention also provides a manufacturing method of the sound-insulation and sound-absorption fibrilia inner wallboard, which is characterized by comprising the following steps of:
(1) Manufacturing a fibrilia layer: after the fibrilia is opened, pretreating the fibrilia by using a pretreating agent, and then preparing a fibrilia felt through the steps of weighing, mixing, carding, air-laying, pre-needling and main needling, so as to obtain a first fibrilia layer and a second fibrilia layer;
(2) And (3) manufacturing a polyvinyl chloride sound insulation layer: weighing polyvinyl chloride, nano silicon oxide, a silane coupling agent and a plasticizer, placing the materials into an internal mixer for banburying for 5-8 minutes, adding polyurethane into the internal mixer, continuously banburying for 5-8 minutes, taking out a well-mixed sample, and placing the sample into an open mill for sheet discharging;
(3) Compounding of a polyvinyl chloride sound insulation layer and a fibrilia layer: sequentially stacking the polyvinyl chloride sound insulation layer sheet material and the first fibrilia layer in the step (2) on the second fibrilia layer, sending the second fibrilia layer sheet material and the first fibrilia layer to baking equipment for baking, and sending the baked fibrilia felt to a roller press for roller forming;
(4) Hot-pressing and compounding of non-woven fabrics: and respectively attaching the upper non-woven fabric and the lower non-woven fabric to the surfaces of the first fibrilia layer and the second fibrilia layer, and hot-pressing the surfaces by using a hot press.
In a further preferable technical scheme, in the step of manufacturing the fibrilia layer, the pre-needling is single-sided needling, and the main needling is double-sided needling.
In a further preferable technical scheme, in the step of manufacturing the polyvinyl chloride sound insulation layer, the banburying temperature is 160-180 ℃ and the rotating speed is 50-80 rpm.
In a further preferable technical scheme, in the step of compounding the polyvinyl chloride sound insulation layer and the fibrilia layer, the baking temperature is 170-200 ℃ and the baking time is 200-250 s.
In a further preferable technical scheme, in the hot-pressing compounding step of the non-woven fabric, the pressure of the hot press is 10-13 MPa, the hot-pressing temperature is 160-180 ℃, and the hot-pressing time is 130-160 s.
In the process of manufacturing the sound-insulating and sound-absorbing fibrilia inner wallboard, firstly, a fibrilia layer and a polyvinyl chloride sound-insulating layer are manufactured, then the polyvinyl chloride sound-insulating layer is placed between the first fibrilia layer and the second fibrilia layer, and after baking, roll forming is carried out. And respectively attaching non-woven fabric layers to the surfaces of the first fibrilia layer and the second fibrilia layer, and carrying out hot press attachment on the non-woven fabric layers by adopting a hot press.
The preparation of the fibrilia layer comprises the steps of opening the fibers, pretreating the opened fibers, mixing, carding, air-laying, pre-needling and main needling, wherein after the fibrilia is opened, the pretreatment agent is used for pretreating the fibrilia, and aims to dissolve components such as wax, pectin and the like on the surface of the fibrilia, and the pretreatment agent can be alkali liquor or silane coupling agent. After pretreatment, the fibrilia, polypropylene fiber and other fibers are mixed together, after carding by a carding machine, a fiber net is manufactured by air-laying equipment, single-sided needling is performed to obtain a fibrilia felt, and double-sided needling is performed to the pre-needled fibrilia felt to obtain a fibrilia felt with higher density.
For the preparation of the polyvinyl chloride sound insulation layer, firstly, placing polyvinyl chloride, nano silicon oxide, a silane coupling agent and a plasticizer into an internal mixer for internal mixing, then adding polyurethane into the internal mixer for further mixing and internal mixing, so that the nano silicon oxide and the polyurethane can be uniformly dispersed in the polyvinyl chloride, and after mixing, placing the mixed glue into an open mill for blanking to prepare the polyvinyl chloride sound insulation sheet layer. After the sound insulation sheet layer is manufactured, the sound insulation sheet layer is placed between the first fibrilia layer and the second fibrilia layer, and is heated and baked, and in the process of heating and baking, polypropylene fibers in the fibrilia layer are heated and melted, so that the fibrilia and other fibers are bonded together on one hand, and interact with the polyvinyl chloride sound insulation layer on the other hand. When the polyvinyl chloride sound insulation layer is baked at high temperature, internal molecules can undergo a crosslinking reaction under the action of polyurethane and a plasticizer, so that the aim of further vulcanization is fulfilled. After being heated for a period of time, the fiber board is subjected to continuous five-pass high-temperature roll forming, so that the fibrilia layer and the polyvinyl chloride sound insulation layer can be well bonded together, the fibrilia and other fibers can be well bonded together in the roll forming process, and the whole fiber board has higher strength and better mechanical property. After the first fibrilia layer, the polyvinyl chloride sound insulation layer and the second fibrilia layer are compounded, the upper non-woven fabric layer and the lower non-woven fabric layer are compounded on the surface of the fiber layer, the two non-woven fabric layers are designed to prevent the fiber plate shape from being bent during hot press compounding, and the non-woven fabric layers are arranged outside the fibrilia layer, so that the improvement of the sound insulation and absorption effects of the fiber plate is facilitated, and the handfeel and the mechanical property of the wallboard are further increased.
The invention has the advantages and beneficial effects that:
1. the fibrilia is selected as the main material of the wallboard, the non-woven fabric layer, the fibrilia layer and the polyvinyl chloride sound insulation layer are compounded together in a rolling or hot pressing mode, no adhesive is used in the process, harmful gases such as formaldehyde and the like are not generated, and the wallboard is very friendly to the environment and human health.
2. The polyvinyl chloride sound insulation layer is embedded in the middle of two fibrilia layers, under the effect of non-woven fabrics and fibrilia, sound waves emitted by a sound source are less reflected, most of sound waves are transmitted through gaps inside fibers, after the sound waves act on the polyvinyl chloride sound insulation layer, macromolecular chains inside the polyvinyl chloride sound insulation layer vibrate, most of sound energy is consumed, and the sound insulation effect is achieved.
3. The polyvinyl chloride sound insulation layer is prepared by banburying and blending polyvinyl chloride serving as a main raw material and polyurethane and nano silicon oxide serving as additive modifiers, the addition of the polyurethane and the nano silicon oxide not only improves the damping performance of the composite material, but also greatly consumes energy when sound waves are transmitted in the polyvinyl chloride sound insulation layer due to the introduction of polyurethane macromolecular chains and nano silicon oxide particles, and the sound insulation effect of the polyvinyl chloride and even the whole fiber board can be further improved.
4. When the fibrilia inner wallboard is manufactured, the pre-treatment agent is used for pre-treating the opened fibrilia, substances such as wax, pectin and the like on the surface of the fibrilia are removed, and when the pre-treated and carded fibrilia is needled into a felt, the connection among the fibrilia is tighter, the number of small gaps is relatively more, and the sound insulation and absorption effects of the whole fibrilia board are better.
Detailed Description
The following describes the invention in further detail with reference to examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Example 1
The utility model provides a wallboard in sound insulation sound absorption fibrilia, includes that last non-woven fabrics layer 1mm, first fibrilia layer 1.5mm, polyvinyl chloride puigging 0.4mm, second fibrilia layer 1mm and lower non-woven fabrics layer 1mm that set gradually, is connected through roll forming's mode between first fibrilia layer, polyvinyl chloride puigging and the second fibrilia layer, goes up to be connected through the mode of hot pressing complex between non-woven fabrics layer and first fibrilia layer, lower non-woven fabrics layer and the second fibrilia layer. The polyvinyl chloride sound insulation layer comprises, by mass, 55 parts of polyvinyl chloride, 35 parts of polyurethane, 40 parts of nano silicon oxide, 1 part of a silane coupling agent and 10 parts of a plasticizer. The surface density of the first fibrilia layer was 1.5kg/m 2 The second fibrilia layer had an areal density of 1.5kg/m 2 The first fibrilia layer and the second fibrilia layer comprise 70 parts of fibrilia, 45 parts of polypropylene fiber, 22 parts of aramid fiber and 12 parts of polyester fiber.
A manufacturing method of a sound-insulating and sound-absorbing fibrilia inner wallboard comprises the following steps:
(1) Manufacturing a fibrilia layer: after the fibrilia is subjected to opening treatment, pretreating the fibrilia by using a pretreatment agent, and then preparing a fibrilia felt through the steps of weighing, mixing, carding, air-laying, pre-needling and main needling, wherein the pre-needling is single-sided needling, and the main needling is double-sided needling;
(2) And (3) manufacturing a polyvinyl chloride sound insulation layer: weighing polyvinyl chloride, nano silicon oxide, a silane coupling agent and a plasticizer, placing the materials into an internal mixer for banburying at 160 ℃ and 80rpm for 5 minutes, adding polyurethane into the internal mixer, continuously banburying for 5 minutes, taking out a well-mixed sample, and placing the sample into an open mill for sheet discharging;
(3) Compounding of a polyvinyl chloride sound insulation layer and a fibrilia layer: sequentially stacking the polyvinyl chloride sound insulation layer sheet material and the first fibrilia layer in the step (2) on the second fibrilia layer, sending the second fibrilia layer sheet material and the first fibrilia layer to baking equipment for baking, wherein the baking temperature is 170 ℃, the baking time is 250s, and sending the baked fibrilia felt to a roller press for rolling forming;
(4) Hot-pressing and compounding of non-woven fabrics: and respectively attaching the upper non-woven fabric and the lower non-woven fabric to the surfaces of the first fibrilia layer and the second fibrilia layer, and hot-pressing the surfaces by using a hot press, wherein the pressure of the hot press is 10MPa, the hot-pressing temperature is 180 ℃, and the hot-pressing time is 130s.
Example 2
The utility model provides a sound insulation sound absorption fibrilia interior wallboard, is including last non-woven fabrics layer 0.8mm, first fibrilia layer 1.3mm, polyvinyl chloride puigging 0.6mm, second fibrilia layer 0.9mm and lower non-woven fabrics layer 0.8mm that set gradually, is connected through roll forming's mode between first fibrilia layer, polyvinyl chloride puigging and the second fibrilia layer, goes up to be connected through the mode of hot pressing complex between non-woven fabrics layer and first fibrilia layer, lower non-woven fabrics layer and the second fibrilia layer. The polyvinyl chloride sound insulation layer comprises 65 parts of polyvinyl chloride, 25 parts of polyurethane, 45 parts of nano silicon oxide, 0.5 part of silane coupling agent and 15 parts of plasticizer according to parts by mass. The surface density of the first fibrilia layer was 1.2kg/m 2 The second fibrilia layer had an areal density of 1.8kg/m 2 The first fibrilia layer and the second fibrilia layer comprise 75 parts of fibrilia, 35 parts of polypropylene fiber, 30 parts of aramid fiber and 15 parts of polyester fiber.
A manufacturing method of a sound-insulating and sound-absorbing fibrilia inner wallboard comprises the following steps:
(1) Manufacturing a fibrilia layer: after the fibrilia is subjected to opening treatment, pretreating the fibrilia by using a pretreatment agent, and then preparing a fibrilia felt through the steps of weighing, mixing, carding, air-laying, pre-needling and main needling, wherein the pre-needling is single-sided needling, and the main needling is double-sided needling;
(2) And (3) manufacturing a polyvinyl chloride sound insulation layer: weighing polyvinyl chloride, nano silicon oxide, a silane coupling agent and a plasticizer, placing the materials into an internal mixer for banburying at 180 ℃ and 60rpm for 6 minutes, adding polyurethane into the internal mixer, continuously banburying for 8 minutes, taking out a well-mixed sample, and placing the sample into an open mill for sheet discharging;
(3) Compounding of a polyvinyl chloride sound insulation layer and a fibrilia layer: sequentially stacking the polyvinyl chloride sound insulation layer sheet material and the first fibrilia layer in the step (2) on the second fibrilia layer, sending the second fibrilia layer sheet material and the first fibrilia layer to baking equipment for baking, wherein the baking temperature is 180 ℃, the baking time is 220 seconds, and sending the baked fibrilia felt to a roller press for rolling forming;
(4) Hot-pressing and compounding of non-woven fabrics: and respectively attaching the upper non-woven fabric and the lower non-woven fabric to the surfaces of the first fibrilia layer and the second fibrilia layer, and hot-pressing the surfaces by using a hot press, wherein the pressure of the hot press is 12MPa, the hot-pressing temperature is 160 ℃, and the hot-pressing time is 150s.
Example 3
The utility model provides a sound insulation sound absorption fibrilia interior wallboard, is including last non-woven fabrics layer 1.2mm, first fibrilia layer 1.2mm, polyvinyl chloride puigging 0.5mm, second fibrilia layer 1.2mm and lower non-woven fabrics layer 1.2mm that set gradually, is connected through roll forming's mode between first fibrilia layer, polyvinyl chloride puigging and the second fibrilia layer, goes up and is connected through the mode of hot pressing complex between non-woven fabrics layer and first fibrilia layer, lower non-woven fabrics layer and the second fibrilia layer. The polyvinyl chloride sound insulation layer comprises, by mass, 70 parts of polyvinyl chloride, 30 parts of polyurethane, 60 parts of nano silicon oxide, 3 parts of a silane coupling agent and 13 parts of a plasticizer. The surface density of the first fibrilia layer was 1.6kg/m 2 The second fibrilia layer had an areal density of 2.0kg/m 2 The first fibrilia layer and the second fibrilia layer comprise 85 parts of fibrilia, 30 parts of polypropylene fiber, 10 parts of aramid fiber and 18 parts of polyester fiber.
A manufacturing method of a sound-insulating and sound-absorbing fibrilia inner wallboard comprises the following steps:
(1) Manufacturing a fibrilia layer: after the fibrilia is subjected to opening treatment, pretreating the fibrilia by using a pretreatment agent, and then preparing a fibrilia felt through the steps of weighing, mixing, carding, air-laying, pre-needling and main needling, wherein the pre-needling is single-sided needling, and the main needling is double-sided needling;
(2) And (3) manufacturing a polyvinyl chloride sound insulation layer: weighing polyvinyl chloride, nano silicon oxide, a silane coupling agent and a plasticizer, placing the materials into an internal mixer for banburying at 180 ℃ and 50rpm for 8 minutes, adding polyurethane into the internal mixer, continuously banburying for 8 minutes, taking out a well-mixed sample, and placing the sample into an open mill for sheet discharging;
(3) Compounding of a polyvinyl chloride sound insulation layer and a fibrilia layer: sequentially stacking the polyvinyl chloride sound insulation layer sheet material and the first fibrilia layer in the step (2) on the second fibrilia layer, sending the second fibrilia layer sheet material and the first fibrilia layer to baking equipment for baking, wherein the baking temperature is 200 ℃, the baking time is 200s, and sending the baked fibrilia felt to a roller press for rolling forming;
(4) Hot-pressing and compounding of non-woven fabrics: and respectively attaching the upper non-woven fabric and the lower non-woven fabric to the surfaces of the first fibrilia layer and the second fibrilia layer, and hot-pressing the surfaces by using a hot press, wherein the pressure of the hot press is 13MPa, the hot-pressing temperature is 160 ℃, and the hot-pressing time is 160s.
Taking a plurality of inner wallboards manufactured in examples 1-3 respectively, wherein one part of the inner wallboards are subjected to sound insulation test according to GBJ75 building sound insulation measurement standard, and the other part of the inner wallboards are subjected to formaldehyde content test according to BG/T17657-2013, and the test results are as follows:
examples Formaldehyde content (mg/100 g) Sound insulation/dB
1 <0.01 38.5
2 <0.01 42.7
3 <0.01 41.1
From the results of the table, the sound-proof and sound-absorbing fibrilia inner wallboard manufactured by adopting the technical scheme of the invention can hardly release harmful gases such as formaldehyde and the like, and has good sound-proof effect.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims (5)

1. The utility model provides a sound insulation sound absorption fibrilia interior wallboard, its characterized in that, including last non-woven fabrics layer, first fibrilia layer, polyvinyl chloride puigging, second fibrilia layer and the non-woven fabrics layer that sets gradually, the areal density of first fibrilia layer is 1.2~1.6kg/m 2 The surface density of the second fibrilia layer is 1.8-2.2 kg/m 2 The first fibrilia layer and the second fibrilia layer comprise, by mass, 70-85 parts of fibrilia, 30-45 parts of polypropylene fiber, 18-30 parts of aramid fiber and 12-18 parts of polyester fiber, and the polyvinyl chloride sound insulation layer comprises 55-70 parts of polyvinyl chloride, 25-35 parts of polyurethane, 40-60 parts of nano silicon oxide, 0.5-3 parts of silane coupling agent and 10-15 parts of plasticizer.
2. The interior wallboard of claim 1, wherein the first fibrilia layer, the polyvinyl chloride sound insulation layer and the second fibrilia layer are connected by roll forming, and the upper non-woven fabric layer is connected with the first fibrilia layer, the lower non-woven fabric layer and the second fibrilia layer by thermal compression compounding.
3. A method of making an interior wallboard of claim 2, comprising the steps of:
(1) Manufacturing a fibrilia layer: after the fibrilia is opened, pretreating the fibrilia by using a pretreating agent, and then preparing a fibrilia felt through the steps of weighing, mixing, carding, air-laying, pre-needling and main needling, so as to obtain a first fibrilia layer and a second fibrilia layer;
(2) And (3) manufacturing a polyvinyl chloride sound insulation layer: weighing polyvinyl chloride, nano silicon oxide, a silane coupling agent and a plasticizer, placing the polyvinyl chloride, the nano silicon oxide, the silane coupling agent and the plasticizer into an internal mixer for banburying for 5-8 minutes, adding polyurethane into the internal mixer, continuously banburying for 5-8 minutes, taking out a well-mixed sample, and placing the sample into an open mill for sheet discharging;
(3) Compounding of a polyvinyl chloride sound insulation layer and a fibrilia layer: sequentially stacking the polyvinyl chloride sound insulation layer sheet material and the first fibrilia layer in the step (2) on the second fibrilia layer, sending the second fibrilia layer sheet material and the first fibrilia layer to baking equipment for baking, wherein the baking temperature is 170-200 ℃, the baking time is 200-250 s, and sending the baked fibrilia felt to a roller press for rolling forming;
(4) Hot-pressing and compounding of non-woven fabrics: and respectively attaching the upper non-woven fabric and the lower non-woven fabric to the surfaces of the first fibrilia layer and the second fibrilia layer, and hot-pressing the surfaces by using a hot press, wherein the pressure of the hot press is 10-13 MPa, the hot-pressing temperature is 160-180 ℃, and the hot-pressing time is 130-160 s.
4. A method according to claim 3, wherein in the step of producing the fibrilia layer, the preliminary needling is single-sided needling and the main needling is double-sided needling.
5. The method according to claim 3, wherein in the step of producing the polyvinyl chloride sound insulation layer, the banburying temperature is 160 to 180 ℃ and the rotation speed is 50 to 80rpm.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101487305A (en) * 2009-01-22 2009-07-22 李秋义 Self-bearing self-heat preserving assembly type building external wall system
CN202131737U (en) * 2011-06-27 2012-02-01 江阴延利汽车饰件有限公司 Sound insulation outer wall decorating plate
CN104629218A (en) * 2015-02-14 2015-05-20 青岛科技大学 Sound insulation material, composite carpet using the material and preparation method thereof
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