CN106048885A - Composite sound insulation material comprising cellulose fibers and nanofibers and preparation method of composite sound insulation material - Google Patents
Composite sound insulation material comprising cellulose fibers and nanofibers and preparation method of composite sound insulation material Download PDFInfo
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- CN106048885A CN106048885A CN201610502911.3A CN201610502911A CN106048885A CN 106048885 A CN106048885 A CN 106048885A CN 201610502911 A CN201610502911 A CN 201610502911A CN 106048885 A CN106048885 A CN 106048885A
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- 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
- D04H1/42—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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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/0023—Electro-spinning characterised by the initial state of the material the material being a polymer melt
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
- D01D5/0084—Coating by electro-spinning, i.e. the electro-spun fibres are not removed from the collecting device but remain integral with it, e.g. coating of prostheses
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- 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
- D04H1/42—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
- D04H1/4266—Natural fibres not provided for in group D04H1/425
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- 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
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- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Nonwoven Fabrics (AREA)
- Artificial Filaments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention belongs to the technical field of functional materials, and discloses a composite sound insulation material comprising cellulose fibers and nanofibers and a preparation method of the composite sound insulation material. The composite sound insulation material is obtained by compounding a composite fiber layer composed of natural cellulose fibers and nanofibers. The nanofibers are prepared by electrospinning. According to the invention, by combining the nanoscale fibers and the natural cellulose fibers, which are obtained through the electrospinning, the sound insulation performance of the composite material is improved; by use of the natural cellulous fibers and the biodegradable polymer, the environmentally-friendly concept is satisfied; and the composite sound insulation material and the preparation method thereof have bright application prospects.
Description
Technical field
The invention belongs to technical field of function materials, be specifically related to a kind of cellulose fiber peacekeeping nanofiber complex sound insulation material
Material and preparation method thereof.
Background technology
Along with expanding economy, living standard and quality of life are constantly promoted by the people.Building and auto industry are also
Developing rapidly, driving deadener in the popularization and application in the field such as house, road, particularly automobile.Auto sound product
Main Function at automotive field is sound insulation, vibration damping, warming.The aggregate demand of market analysis domestic automobile acoustical insulation products in 2013 surpasses
Cross 30,000,000,000 yuan, and demand is still continuously increased.Body material used by acoustical insulation products is various useless fibers, adds part heat
Molten powder or meldable fibre process.But this deadening felt sound-absorbing, soundproof effect are general.And deadener is in architectural engineering
Application mainly at baffle, soundproof wall, sealing ring etc., the material such as conventional expanded perlite, mineral fibres, foam plastics.But
Owing to traditional deadener thickness is big, surface density is big, after using material scrap, environment is had bigger pollution, limit relevant every
Promoting the use of of sound product.
For acoustic damping materials, closely knit its sound insulation value of thick and heavy material is good；Porous material can make sound wave at material
Middle propagation causes VISCOUS FLOW to lose.Various acoustical materials are combined by the method for stacking and realize sound by existing acoustic damping materials
The maximization that sound is decayed at different frequencies.
Electrostatic spinning be a kind of fibre diameter of preparing simply, flexibly be tens to the spinning process of hundreds of nanometer, its base
Present principles is: the polymer solution of capillary outlet or melt, and the liquid partial points of Free Surface is in high-voltage electrostatic field
Under effect, being deformed into taylor cone, when electrostatic repulsion forces exceedes the surface tension of drop, the top end of taylor cone will be formed
Thread, and stretched further in the motion of electric field, volatilize (or melt cooling) along with solvent simultaneously, obtain Nanowire
Dimension.The nanofiber obtained by electrostatic spinning has minimum diameter, high porosity, great specific surface area and outstanding
The advantages such as filter efficiency, these characteristics make nanofiber have important use in biological medicine, military project, filtration, noise reduction field.My god
Right cellulosic fibre material has the features such as good hygroscopicity, intensity height, little, the antiseptic and inhibiting bacteria function of deformability, so extensively being used
In articles for use such as medicated clothing home textiles.But the nanofiber obtained natural cellulose fiber peacekeeping electrostatic spinning at present carries out compound preparation
The research of deadener but rarely has report.
Summary of the invention
The primary and foremost purpose of the present invention is the deficiency in order to improve current material low-frequency sound-absorbing sound insulation value, it is provided that a kind of fiber
Cellulose fiber and nanofiber composite sound isolating material.
Another object of the present invention is to provide the preparation side of above-mentioned cellulose fiber peacekeeping nanofiber composite sound isolating material
Method.
The object of the invention is achieved through the following technical solutions:
A kind of cellulose fiber peacekeeping nanofiber composite sound isolating material, described composite sound isolating material comprises by native cellulose
The composite fibre layer that fiber and nanofiber are constituted.
Described composite fibre layer can be that native cellulose fibre stratum reticulare is compound with nanofiber layer to be obtained, the most natural fibre
Cellulose fiber stratum reticulare is obtained by native cellulose fibre acupuncture, and the grammes per square metre of native cellulose fibre stratum reticulare is 10～50g/m2, receive
The fibrolaminar grammes per square metre of rice is 0.2～20g/m2；Or the native cellulose ultimate fibre laying acupuncture being covered with nanofiber is become net
Layer obtains, and laying acupuncture becomes the grammes per square metre of stratum reticulare to be 10.2～70g/m2, wherein the compound quantity of nanofiber is 0.2～20g/m2。
Preferably, described composite sound isolating material is obtained by multilamellar above-mentioned composite fibre layer superposition；Described composite sound isolating material
Grammes per square metre be 100～500g/m2。
Described native cellulose fibre includes but not limited to flaxen fiber, sugarcane fiber, coir fibre, bombax cotton, Fructus Ananadis comosi
Leaf fibre, raphia, banana fiber, lotus root silk fibre and bamboo fiber, flaxen fiber therein is including, but not limited to Huang
Flaxen fiber, ramee, apocynum fibre, sisal fiber, hemp, flax fiber etc..All native cellulose fibres are equal
Containing certain cavity structure, its cavity area accounts for the 5%～80% of the fibre section gross area.
As further improving, it is natural that described native cellulose fibre refers to after antiflaming finishing agent processes
Cellulose fibre；Described antiflaming finishing agent refers to containing at least one solid in the element such as halogen, N, P, Si, B or liquid
Antiflaming finishing agent.
Described nanofiber refer to Biodegradable high-molecular nanofiber, described Biodegradable high-molecular include but not
It is confined to polylactic acid (PLA), polycaprolactone (PCL), polyhydroxyalkanoate (PHA), poly butylene succinate (PBS), gathers
Ester-copolyether, polyester-amide copolymer, poly-carbon dioxide etc..The fibre diameter of described nanofiber is 20～1500nm.
The preparation method of above-mentioned cellulose fiber peacekeeping nanofiber composite sound isolating material, including following preparation process:
(1) by native cellulose fibre through fully opening comb, after forming ultimate fibre state, laying acupuncture becomes native cellulose
Fiber web layer, with gained native cellulose fibre stratum reticulare as receiving terminal, uses electrostatic spinning process at native cellulose fibre net
Prepare nanofiber layer on Ceng, obtain composite fibre layer；Or by native cellulose fibre through fully opening comb, form ultimate fibre shape
After state, with gained ultimate fibre as receiving terminal, by electrostatic spinning process and external disturbance wind scattered mode, nanofiber is covered
On native cellulose fibre ultimate fibre, then its laying acupuncture is become net, obtain composite fibre layer；
(2) by multilayer composite fiber layer superimposion, described cellulose fiber peacekeeping nanofiber composite sound isolating material is obtained.
Preferably, described electrostatic spinning include syringe needle method electrostatic spinning, Free Surface electrostatic spinning, centrifugal electrostatic spinning,
Melt-blown electrostatic spinning or flash distillation electrostatic spinning.
Preferably, the described nano-fiber material for electrostatic spinning can use solution or melt form, wherein solution
The effective concentration scope of middle nano-fiber material is 5%～50%.
Preferably, described external disturbance wind scattered disturbance air temperature is 20～40 DEG C, and relative humidity is 25%～98%.
Preparation method and the obtained product of the present invention have the advantage that and beneficial effect:
(1) gained composite sound isolating material of the present invention has excellent sound-absorbing sound insulation value, its absorption system to 500Hz sound source
Number reaches more than 0.3, and the absorptance of 1000Hz sound source is reached more than 0.5.
(2) gained composite sound isolating material of the present invention employing native cellulose fibre is as base material, native cellulose fibre
The form of cavity structure and surface imperfection substantially increases material sound-absorbing sound insulation value.
(3) present invention uses electrostatic spinning to obtain micro/nano-fibre film, and obtained nanofiber/granule functional layer is fine
Diameter is little, porosity is high and great specific surface area for dimension, is suitable to the application of sound-absorbing deadener.
(4) base material of the present invention uses the native cellulose fibres such as flaxen fiber, and functional layer uses biodegradable polymer
Prepare so that this high-performance sound-absorbing deadener has the feature of biodegradable, meets the requirement of environmental protection.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
In the present embodiment, cellulose fibre uses tossa, and cavity area accounts for the 10% of the fibre section gross area.Yellow
Flaxen fiber forms ultimate fibre shape good fiber quality through opening comb process, processes it with the liquid flame-proof finishing agent containing P, fire retardant
Consumption is 1%, then its laying acupuncture is become stratum reticulare, and surface density is 30g/m2.Thickness is 3mm.
Nanofiber layer can use syringe needle electrostatic spinning molding to prepare, using polylactic acid as nanofiber fibroblast raw material.Poly-
Lactic acid (PLA, Mw=3 × 105G/mol), after vacuum drying (60 DEG C, 12h), employing chloroform is solvent, is configured to the solution of 20%,
Magnetic agitation 4h, standing and defoaming 2h.The PLA solution electrostatic spinning molding that will prepare, receiving terminal is tossa stratum reticulare, spinning electricity
Pressure is 15kV, and receiving range is about 12cm, and fltting speed is 0.5ml/h, obtains being covered with the Corchorus olitorius L. composite fibre of nanofiber layer
Structure sheaf.Nanofiber diameter is 600-1200nm, and nanofiber layer grammes per square metre is 10.5g/m2.By complex structure of filament layer vacuum
Carrying out MULTILAYER COMPOSITE after drying, obtaining grammes per square metre is 300g/m2Complex sound insulation carpet veneer.The complex sound insulation felt prepared by said method
The absorptance of 500Hz sound source being reached more than 0.3, the absorptance of 1000Hz sound source is reached more than 0.5, sound absorption qualities is relatively
Good.
Embodiment 2
In the present embodiment, cellulose fibre uses flax fiber, and cavity area accounts for the 20% of the fibre section gross area.Sub-
Flaxen fiber forms ultimate fibre shape good fiber quality through opening comb process, processes it with the liquid flame-proof finishing agent containing Si, fire-retardant
Agent consumption is 1.5%, then its laying acupuncture is become stratum reticulare, and surface density is 30g/m2.Thickness is 3mm.
Nanofiber layer can use syringe needle electrostatic spinning molding to prepare, using polylactic acid as nanofiber fibroblast raw material.Poly-
Lactic acid (PLA, Mw=3 × 105G/mol), after vacuum drying (60 DEG C, 12h), employing chloroform is solvent, is configured to the solution of 20%,
Magnetic agitation 4h, standing and defoaming 2h.The PLA solution electrostatic spinning molding that will prepare, receiving terminal is flax fiber stratum reticulare, spinning electricity
Pressure is 15kV, and receiving range is about 12cm, and fltting speed is 0.5ml/h, obtains being covered with Caulis et Folium Lini composite fibre of nanofiber layer
Structure sheaf.Nanofiber diameter is 600-1200nm, and nanofiber layer grammes per square metre is 10.2g/m2.By complex structure of filament layer vacuum
Carrying out MULTILAYER COMPOSITE after drying, obtaining grammes per square metre is 295g/m2Complex sound insulation carpet veneer.The complex sound insulation felt prepared by said method
The absorptance of 500Hz sound source being reached 0.31, the absorptance of 1000Hz sound source is reached 0.52, sound absorption qualities is preferable.
Embodiment 3
In the present embodiment, cellulose fibre uses pineapple fibre fiber, and cavity area accounts for the 15% of the fibre section gross area.
Pineapple fibre fiber forms ultimate fibre shape good fiber quality through opening comb process, processes it with the solid fireproof finishing agent containing N, resistance
Combustion agent consumption is 3%, then its laying acupuncture is become stratum reticulare, and surface density is 30g/m2.Thickness is 3mm.
Nanofiber layer can use Free Surface electrostatic spinning molding to prepare, using polyhydroxyalkanoate as nanofiber
Fibroblast raw material.Polyhydroxyalkanoate (intrinsic viscosity 0.7-0.9), after vacuum drying (60 DEG C, 12h), employing THF:DMAc (9:
1) it is mixed solvent, is configured to the solution of 20%, magnetic agitation 4h, standing and defoaming 1h.By molten for the polyhydroxyalkanoate for preparing
Liquid electrostatic spinning molding, receiving terminal is pineapple fibre fiber web layer, and spinning voltage is 60kV, and receiving range is about 18cm, and rotor turns
Speed is 20r/min, obtains being covered with the pineapple fibre complex structure of filament layer of nanofiber layer.Nanofiber diameter is 100-500nm,
Nanofiber layer grammes per square metre is 9.8g/m2.Carrying out MULTILAYER COMPOSITE after being vacuum dried by complex structure of filament layer, obtaining grammes per square metre is
290g/m2Complex sound insulation carpet veneer.The absorptance of 500Hz sound source is reached by the complex sound insulation felt prepared by said method
0.30, the absorptance of 1000Hz sound source is reached 0.50, sound absorption qualities is preferable.
Embodiment 4
In the present embodiment, cellulose fibre uses sisal fiber, and cavity area accounts for the 25% of the fibre section gross area.Sword
Flaxen fiber forms ultimate fibre shape good fiber quality through opening comb process, processes it with the solid fireproof finishing agent containing B, fire retardant
Consumption is 4%, then its laying acupuncture is become stratum reticulare, and surface density is 30g/m2.Thickness is 3mm.
Nanofiber layer can use melt-blown electrostatic spinning molding to prepare, using polycaprolactone as nanofiber fibroblast raw material.
Polycaprolactone (PCL, Mw=8 × 104G/mol), after vacuum drying (60 DEG C, 12h), heat fusing is added.PCL melt is carried out melt-blown quiet
Electrospun molding, receiving terminal is sisal fiber stratum reticulare, and spinning voltage is 15kV, and receiving range is about 12cm, and fltting speed is
0.5ml/h, obtains being covered with the Folium Agaves Sisalanae complex structure of filament layer of nanofiber layer.Nanofiber diameter is 200-1200nm, nanometer
Fibrous layer grammes per square metre is 10.7g/m2.Carrying out MULTILAYER COMPOSITE after being vacuum dried by complex structure of filament layer, obtaining grammes per square metre is 315g/m2
Complex sound insulation carpet veneer.The complex sound insulation felt prepared by said method reaches 0.38 to the absorptance of 500Hz sound source, right
The absorptance of 1000Hz sound source reaches 0.56, and sound absorption qualities is preferable.
Embodiment 5
In the present embodiment, cellulose fibre uses sugarcane fiber, and cavity area accounts for the 32% of the fibre section gross area.Sugarcane
Slag fiber forms ultimate fibre shape good fiber quality through opening comb process, processes it with the liquid flame-proof finishing agent containing P, fire retardant
Consumption is 0.5%.
Nanofiber layer can use Free Surface electrostatic spinning molding to prepare, former using polylactic acid as nanofiber fibroblast
Material.Polylactic acid (PLA, Mw=3 × 105G/mol), after vacuum drying (60 DEG C, 12h), employing chloroform is solvent, is configured to 20%
Solution, magnetic agitation 4h, standing and defoaming 2h.The PLA solution electrostatic spinning molding that will prepare, receiving terminal is bagasse ultimate fibre, spins
Filament voltage is 60kV, and receiving range is about 15cm, and the temperature of external disturbance wind is 35 DEG C, and relative humidity is 55%, is covered with
The bagasse ultimate fibre of PLA electrostatic spinning nano fiber, PLA nanofiber diameter is 300-1000nm.After drying, PLA will be covered with quiet
The bagasse ultimate fibre laying acupuncture of electro spinning nano fiber becomes net, obtains composite fibre layer, the unit grammes per square metre of gained composite fibre layer
Compare the bagasse single fiber net increase 10.6g/m not being covered with nanofiber2.Then multilayer composite fiber structure sheaf being made grammes per square metre is
320g/m2Complex sound insulation carpet veneer, be described cellulose fiber peacekeeping nanofiber composite sound isolating material.Prepared by said method
Complex sound insulation felt the absorptance of 500Hz sound source is reached 0.36, the absorptance of 1000Hz sound source is reached 0.57, sound-absorbing
Better performances.
Embodiment 6
In the present embodiment, cellulose fibre uses bombax cotton, and cavity area accounts for the 10% of the fibre section gross area.Wood
Cotton fiber forms ultimate fibre shape good fiber quality through opening comb process, processes it with the liquid flame-proof finishing agent containing P, fire retardant
Consumption is 1%, then its laying acupuncture is become stratum reticulare, and surface density is 30g/m2.Thickness is 3mm.
Nanofiber layer can use syringe needle electrostatic spinning molding to prepare, and becomes as nanofiber using polylactic acid with polycaprolactone
Fine raw material.Polylactic acid (PLA, Mw=3 × 105And polycaprolactone (PCL, M g/mol)w=8 × 104G/mol) mass ratio be (4:
1), after vacuum drying (60 DEG C, 12h), using chloroform: DMF (4:1) is solvent, is configured to the solution of 14%, magnetic agitation 4h,
Standing and defoaming 2h.The PLA/PCL solution electrostatic spinning molding that will prepare, receiving terminal is bombax cotton stratum reticulare, and spinning voltage is
15kV, receiving range is about 12cm, and fltting speed is 0.5ml/h, obtains being covered with the kapok complex structure of filament of nanofiber layer
Layer.Nanofiber diameter is 400-1500nm, and nanofiber layer grammes per square metre is 10.1g/m2.Complex structure of filament layer is vacuum dried
After carry out MULTILAYER COMPOSITE, obtaining grammes per square metre is 300g/m2Complex sound insulation carpet veneer.The complex sound insulation felt pair prepared by said method
The absorptance of 500Hz sound source reaches 0.31, and the absorptance of 1000Hz sound source is reached 0.52, and sound absorption qualities is preferable.
Embodiment 7
In the present embodiment, cellulose fibre uses bamboo fiber, and cavity area accounts for the 45% of the fibre section gross area.Bamboo
Fibril forms ultimate fibre shape good fiber quality through opening comb process, processes it with the liquid flame-proof finishing agent containing N, fire retardant
Consumption is 5%.
Nanofiber layer can use syringe needle electrostatic spinning molding to prepare, using polylactic acid as nanofiber fibroblast raw material.Poly-
Lactic acid (PLA, Mw=3 × 105G/mol), after vacuum drying (60 DEG C, 12h), employing chloroform is solvent, is configured to the solution of 20%,
Magnetic agitation 4h, standing and defoaming 2h.The PLA solution electrostatic spinning molding that will prepare, receiving terminal is the former ultimate fibre of bamboo, spinning voltage
For 15kV, receiving range is about 12cm, and fltting speed is 0.5ml/h, and the temperature of external disturbance wind is 30 DEG C, and relative humidity is
50%, obtain being covered with the former ultimate fibre of bamboo of a diameter of 600-1200nm nanofiber.After drying, by former for the bamboo that is covered with nanofiber
Ultimate fibre laying acupuncture becomes net, obtains composite fibre layer, and the unit of gram heavy phase ratio of gained composite fibre layer is not covered with nanofiber
Bamboo former single fiber net increase 10.1g/m2.By gained composite fibre layer through MULTILAYER COMPOSITE, obtaining grammes per square metre is 306g/m2Compound every
Sound carpet veneer.The complex sound insulation felt prepared by said method reaches 0.30 to the absorptance of 500Hz sound source, to 1000Hz sound source
Absorptance reaches 0.51, and sound absorption qualities is preferable.
Embodiment 8
In the present embodiment, cellulose fibre uses lotus root silk fibre, and cavity area accounts for the 5% of the fibre section gross area.Rhizoma Nelumbinis
Silk fiber forms ultimate fibre shape good fiber quality through opening comb process, processes it with the liquid flame-proof finishing agent containing N, fire retardant
Consumption is 1%.
Nanofiber layer can use syringe needle electrostatic spinning molding to prepare, using polyester-amide copolymer as nanofiber fibroblast
Raw material.After polyester-amide copolymer vacuum drying (60 DEG C, 12h), employing chloroform is solvent, is configured to the solution of 15%, magnetic force
Stirring 4h, standing and defoaming 2h.The PEA copolymer solution electrostatic spinning molding that will prepare, receiving terminal is fibre of lotus root ultimate fibre, spinning electricity
Pressure is 15kV, and receiving range is about 12cm, and fltting speed is 0.5ml/h, and the temperature of external disturbance wind is 30 DEG C, and relative humidity is
50%, obtain being covered with the fibre of lotus root ultimate fibre of a diameter of 600-1200nm nanofiber.After drying, the fibre of lotus root of nanofiber will be covered with
Ultimate fibre laying acupuncture becomes net, obtains composite fibre layer, and the unit of gram heavy phase ratio of gained composite fibre layer is not covered with nanofiber
Fibre of lotus root single fiber net increase 10.3g/m2.By gained composite fibre layer through MULTILAYER COMPOSITE, obtaining grammes per square metre is 310g/m2Compound every
Sound carpet veneer.The complex sound insulation felt prepared by said method reaches 0.32 to the absorptance of 500Hz sound source, to 1000Hz sound source
Absorptance reaches 0.53, and sound absorption qualities is preferable.
Embodiment 9
In the present embodiment, cellulose fibre uses banana fiber and lotus root silk fibre composite fibre, banana fiber cavity face
Amassing and account for the 8% of the fibre section gross area, lotus root silk fibre cavity area accounts for the 5% of the fibre section gross area.Banana fiber and fibre of lotus root
Fiber forms ultimate fibre shape good fiber quality through opening comb process, processes it with Halogen solid fireproof finishing agent, fire retardant
Consumption is 1%.
Nanofiber layer can use flash distillation electrostatic spinning molding to prepare, using polycaprolactone as nanofiber fibroblast raw material.
Polycaprolactone (PCL, Mw=8 × 104G/mol), after vacuum drying (60 DEG C, 12h), employing chloroform is solvent, is configured to 15%
Solution, magnetic agitation 4h, standing and defoaming 2h.The PC solution prepared is carried out flash distillation electrostatic spinning molding, and receiving terminal is Fructus Musae fiber crops
Ultimate fibre and fibre of lotus root ultimate fibre composite fibre, spinning voltage is 15kV, and receiving range is about 15cm, and the temperature of external disturbance wind is
35 DEG C, relative humidity is 55%, obtains being covered with the Fructus Musae fiber crops ultimate fibre of PCL electrostatic spinning nano fiber and fibre of lotus root ultimate fibre mixing fibre
Dimension, PCL nanofiber diameter is 500-1200nm.After drying, Fructus Musae fiber crops ultimate fibre and the fibre of lotus root single fiber of nanofiber will be covered with
Dimension composite fibre laying acupuncture becomes net, obtains composite fibre layer, and the unit of gram heavy phase ratio of gained composite fibre layer is not covered with nanometer
The Fructus Musae fiber crops ultimate fibre of fiber and fibre of lotus root ultimate fibre composite fibre net increase 10.4g/m2.Then by multilayer composite fiber structure sheaf
Making grammes per square metre is 302g/m2Complex sound insulation carpet veneer, be described cellulose fiber peacekeeping nanofiber composite sound isolating material.By upper
The complex sound insulation felt that method of stating prepares reaches 0.32 to the absorptance of 500Hz sound source, reaches the absorptance of 1000Hz sound source
To 0.51, sound absorption qualities is preferable.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-described embodiment
Limit, the change made under other any spirit without departing from the present invention and principle, modify, substitute, combine, simplify,
All should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (9)
1. a cellulose fiber peacekeeping nanofiber composite sound isolating material, it is characterised in that: described composite sound isolating material comprise by
The composite fibre layer that native cellulose fibre and nanofiber are constituted.
A kind of cellulose fiber peacekeeping nanofiber composite sound isolating material the most according to claim 1, it is characterised in that: described
Composite fibre layer is combined by native cellulose fibre stratum reticulare and nanofiber layer and obtains, wherein native cellulose fibre stratum reticulare by
Native cellulose fibre acupuncture obtains, and the grammes per square metre of native cellulose fibre stratum reticulare is 10～50g/m2, the grammes per square metre of nanofiber layer
It is 0.2～20g/m2；Or described composite fibre layer is that the native cellulose ultimate fibre laying acupuncture being covered with nanofiber is become net
Layer obtains, and laying acupuncture becomes the grammes per square metre of stratum reticulare to be 10.2～70g/m2, wherein the compound quantity of nanofiber is 0.2～20g/m2。
A kind of cellulose fiber peacekeeping nanofiber composite sound isolating material the most according to claim 1 and 2, it is characterised in that:
Described composite sound isolating material is added by multilayer composite fiber stacking and obtains；The grammes per square metre of described composite sound isolating material is 100～500g/
m2。
A kind of cellulose fiber peacekeeping nanofiber composite sound isolating material the most according to claim 1 and 2, it is characterised in that:
Described native cellulose fibre refers to flaxen fiber, sugarcane fiber, coir fibre, bombax cotton, arghan, Folium Trachycarpi fibre
At least one in dimension, banana fiber, lotus root silk fibre and bamboo fiber；Described flaxen fiber includes tossa, ramee, sieve
Cloth flaxen fiber, sisal fiber, hemp or flax fiber；Described native cellulose fibre all contains certain cavity structure,
Its cavity area accounts for the 5%～80% of the fibre section gross area.
A kind of cellulose fiber peacekeeping nanofiber composite sound isolating material the most according to claim 1 and 2, it is characterised in that:
Described native cellulose fibre refers to the native cellulose fibre after antiflaming finishing agent processes；Described antiflaming finishing agent
Refer to containing at least one solid in halogen, N, P, Si, B element or the antiflaming finishing agent of liquid.
A kind of cellulose fiber peacekeeping nanofiber composite sound isolating material the most according to claim 1 and 2, it is characterised in that:
Described nanofiber refers to that Biodegradable high-molecular nanofiber, described Biodegradable high-molecular refer to polylactic acid, gather oneself
Lactone, polyhydroxyalkanoate, poly butylene succinate, polyester-polyether copolymers, polyester-amide copolymer and poly-titanium dioxide
At least one in carbon；The fibre diameter of described nanofiber is 20～1500nm.
7. the preparation method of the cellulose fiber peacekeeping nanofiber composite sound isolating material described in any one of claim 1～6, it is special
Levy and be to include following preparation process:
(1) by native cellulose fibre through fully opening comb, after forming ultimate fibre state, laying acupuncture becomes native cellulose fibre
Stratum reticulare, with gained native cellulose fibre stratum reticulare as receiving terminal, uses electrostatic spinning process on native cellulose fibre stratum reticulare
Preparation nanofiber layer, obtains composite fibre layer；Or by native cellulose fibre through fully opening comb, form ultimate fibre state
After, with gained ultimate fibre as receiving terminal, by electrostatic spinning process and external disturbance wind scattered mode, nanofiber is overlying on
On native cellulose fibre ultimate fibre, then its laying acupuncture is become net, obtain composite fibre layer；
(2) by multilayer composite fiber layer superimposion, described cellulose fiber peacekeeping nanofiber composite sound isolating material is obtained.
The preparation method of cellulose fiber peacekeeping nanofiber composite sound isolating material the most according to claim 7, its feature exists
In: described electrostatic spinning includes syringe needle method electrostatic spinning, Free Surface electrostatic spinning, centrifugal electrostatic spinning, melt-blown electrostatic spinning
Or flash distillation electrostatic spinning；The described nano-fiber material for electrostatic spinning uses solution or melt form, wherein in solution
The effective concentration scope of nano-fiber material is 5%～50%.
The preparation method of cellulose fiber peacekeeping nanofiber composite sound isolating material the most according to claim 7, its feature exists
In: described external disturbance wind scattered disturbance air temperature is 20～40 DEG C, and relative humidity is 25%～98%.
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