CN108623959A - A kind of preparation method of hollow biomass fiber/high polymer composite sound-absorbing material - Google Patents
A kind of preparation method of hollow biomass fiber/high polymer composite sound-absorbing material Download PDFInfo
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- CN108623959A CN108623959A CN201810517873.8A CN201810517873A CN108623959A CN 108623959 A CN108623959 A CN 108623959A CN 201810517873 A CN201810517873 A CN 201810517873A CN 108623959 A CN108623959 A CN 108623959A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—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 an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic System
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Nonwoven Fabrics (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
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Abstract
The invention discloses a kind of preparation methods of hollow biomass fiber/high polymer composite sound-absorbing material, belong to fibrous material manufacturing field.The present invention is using hollow biomass fiber cellulose fiber as raw material; control surface density, the bulk density of material; and acetylation transformation is carried out to raw material; form nanoaperture; using water-soluble high polymer as adhesive; the hole for making material that there is macroscopic view carefully to see microcosmic different scale forms complicated outlet openings, has preferable sound absorbing performance to the sound wave of different frequency range in the material.The advantage environmentally protective in addition, sound-absorbing material that is prepared of the present invention has biodegradable, that the density of fibrous material is low, lightweight biocidal property is good.
Description
Technical field
The present invention relates to a kind of preparation methods of hollow biomass fiber/high polymer composite sound-absorbing material, belong to undulation degree
Expect manufacturing field.
Background technology
Noise is the Environmental Pollution source for influencing people's work and life comfort level, and noise pollution has become after water
Another big important environmental problem except pollution, atmosphere pollution.Acoustic environment and the production and living of people are closely bound up, in physiology
With psychology and behavioural habits etc. all strong influence is brought to the mankind.Noise not only upsets the normal life of people, harm
Hinder study and work, but also people's physiology and psychological adverse reaction can be caused, cause Hearing, dizziness, insomnia,
The problems such as energy is not concentrated simultaneously can induce hypertension and heart disease etc., go back entail dangers to life even in the worst case.With science and technology into
The fast development of step and society, people are higher and higher to life, study, the requirement for the local environment sound that works, and noise is to people
Influence with harm be increasingly taken seriously.
Currently, noise pollution has become the main Environmental Problems of city dweller's complaint.Sound absorption is to improve indoor tone quality and control
One of the important measures of noise processed.With inorfils such as glass fibre, asbestos and with organic conjunction such as polyester, polypropylene, polyurethane
The sound-absorbing porous material prepared at fiber due to being also easy to produce solid waste, it is not degradable the shortcomings of, use process actual
In have significant limitation.And the sound-absorbing porous material prepared as raw material using natural fiber, the past due to fiber source compared with
Less, expensive, it is used without large area.With the continuous enhancing of environmental consciousness, people gradually recognize natural fiber conduct
Renewable resource, can secondary use, the production cost of material is also minimized, and its sound absorbing performance is excellent so that natural fine
Dimension sound-absorbing porous material returns the public visual field, becomes important one of the research direction of sound-absorbing material.
Fibrous material has the characteristics that short texture, frivolous, processing performance is good compared with the resonance sound-absorbing structure of rigidity,
Preparation suitable for sqouynd absorption lowering noise product.Compared with other flexible materials, fiber base sound-absorbing material can be processed into it is variously-shaped,
And it queueing discipline, is evenly distributed.Therefore, fiber base flexibility sound-absorbing material has become a research heat in sqouynd absorption lowering noise field
Point.But existing fiber base sound-absorbing material distribution of pores is relatively narrow, and it is small to absorb audio frequency range.And existing undulation degree
Expect that biological degradability is poor, larger pressure is caused to environment.
Invention content
To solve the above problems, the present invention provides one kind there is macroscopical (micron)-carefully to see (micron)-microcosmic (nanometer) no
With the hole of scale, the sound-absorbing material of complicated outlet openings is formed in the material, for solving natural hollow in the prior art
Fiber utilization is less, results in waste of resources, and widens the application field of novel biomass hollow material, solves the life of sound-absorbing material
Biodegradable, and take into account its excellent sound absorption effect.
The first purpose of the invention is to provide a kind of preparations of hollow biomass fiber/high polymer composite sound-absorbing material
Method includes the following steps：
(1) hollow biomass fiber is subjected to sour processing, then cleaning, drying, obtains acid treated hollow biomass
Fiber；
(2) treated that hollow biomass fiber carries out bleaching oxidation processes for the acid for obtaining step (1), is washed out
To neutrality, it is dried to obtain the hollow fibril of hollow biomass fiber；
(3) the hollow fibril dissolving of hollow biomass fiber that step (2) obtains is disperseed in a solvent, is then added
Enter catalyst and carry out acetylization reaction, fiber pulp is prepared, by the fiber plasm scouring to neutrality, is dried to obtain hollow life
Material fibrils suede；
(4) it is mixed with the hollow biomass fiber suede that step (3) obtains after dissolving water-soluble high polymer, stirring is anti-
Should after dry to obtain hollow biomass fiber/high polymer composite sound-absorbing material.
In one embodiment of the invention, in step (1), the hollow biomass fiber is jute, Calotropis gigantea
Fiber, monkey grass, Yang Xu or loofah fiber.
In one embodiment of the invention, in step (3), the solvent is acetic acid, acetic anhydride or acetic acid and second
Mixed solution, the dimethylformamide containing chloroacetic chloride or the diformazan containing chloroacetic chloride that acid anhydrides is mixed to form with arbitrary proportion
Yl acetamide.
In one embodiment of the invention, in step (4), the water-soluble high polymer is polyvinyl alcohol, gathers
Ethylene oxide, polyacrylamide or polyvinylpyrrolidone.
In one embodiment of the invention, in step (3), the catalyst is perchloric acid, aluminum perchlorate or pyrrole
Pyridine.
In one embodiment of the invention, in step (1), the bleaching oxidation processes be strong base solution with
It is handled in hydrogen peroxide or the mixed solution of SODIUM PERCARBONATE solution composition.
In one embodiment of the invention, the preparation method specifically comprises the following steps：
(1) bath raio 1 is pressed:20~1:200 put into hollow biomass fiber in acid solution, under conditions of 70~90 DEG C
3h~5h is disseminated, material leaching is come out, is cleaned, drying obtains acid treated hollow biomass fiber；
(2) bleaching oxidant is dissolved in water, by bath raio 1:20~1:200 input acid treated hollow biomass
Fiber disseminates 3h~5h under conditions of 70~90 DEG C, until fiber becomes white and swims on solution, is washed out into
Property, it is dried to obtain the hollow fibril of hollow biomass fiber；
(3) the hollow hollow fibril of biomass fiber is dissolved in the solution of acetic acid or acetic anhydride, is made described hollow
The hollow fibrillar dispersion of biomass fiber comes, and catalyst is then added and carries out acetylization reaction, is soaked under conditions of 20~50 DEG C
3h~5h is contaminated, fiber pulp is prepared, by the fiber plasm scouring to neutrality, is dried to obtain hollow biomass fiber suede；
(4) water-soluble high polymer is configured to the suspension of 5~20wt%, the strength in 70~90 DEG C of water-bath
Stirring, until being completely dissolved, mixes after high polymeric solution is diluted with the hollow biomass fiber suede that step (3) obtains, and stirring is anti-
Should after dry, obtain hollow biomass fiber/high polymer composite sound-absorbing material.
In one embodiment of the invention, the bleaching oxidant is the sodium hydroxide of mass fraction minimum 1%
The mixed liquor being mixed to get with the hydrogen peroxide of mass fraction minimum 2.4%.
In one embodiment of the invention, also add in the mixed solution of the hollow biomass fiber and high polymer
Enter ES fibers, after the drying hot repressing, further reinforce the non-woven material of hollow biomass fiber/PVA, improves its machinery
Strongly.
Second object of the present invention is to provide hollow biomass fiber/high polymer that the preparation method is prepared
Composite sound-absorbing material.
The beneficial effects of the present invention are：
(1) present invention has larger using the fibril extracted from monkey grass, Calotropis gigantea, luffa, in the material portion
Cavity, and cavity wall is thin, and degree of hollowness is high, and this special structure increases the friction between sound and fiber, in sound absorption field
There is potential utilization.Raw material sources of the present invention are abundant, cheap simultaneously, and material itself is repeatable to be recycled, and is being protected
The forest reserves, the aspect that reduces environmental pollution have good society and ecological benefits, are a kind of novel green materials.
(2) present invention provides a kind of preparation method of hollow biomass fiber/high polymer composite sound-absorbing material, with novel
Hollow biomass fiber cellulose fiber is raw material, controls surface density, the bulk density of material, is bonding with water-soluble high polymer
Agent, using wet-laying or method prepare non-woven material, have biodegradable, it is environmentally protective, fibrous material it is close
Spend advantage low, that lightweight biocidal property is good.
(3) present invention utilizes the degree of hollowness of material itself, micron-nanometer ruler of fiber surface caused by acetylated modification
The hole of degree, the micro-meter scale hole that high-polymer membrane is formed, the hole of overlapped between fiber and fiber mm-scale make material
Expect the hole that there is macroscopical (micron)-carefully to see (micron)-microcosmic (nanometer) different scale, forms complicated path in the material
Channel.When sound frequency is in 100Hz or more, the acoustic absorptivity of material is all higher than 0.2, has sound absorbing performance.In sound frequency
For 1250Hz when material acoustic absorptivity reach 0.8, hereafter as the acoustic absorptivity of the elevated material of frequency has numerical values recited
Fluctuating change, but 0.8 or more is maintained always.Reach maximum value in the acoustic absorptivity of the high-frequency region of 2500HZ or more, material
0.99.Come with the average value of 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, the acoustic absorptivity of six octaves of 4000Hz
Indicate the average sound absorption coefficient of a certain material, numerical valueIt can reach 0.6 or so.
Specific implementation mode
With reference to embodiment, the embodiment of the present invention is furthur described in detail.Following embodiment is used for
Illustrate the present invention, but is not limited to the scope of the present invention.
Embodiment 1：A kind of preparation of hollow biomass fiber/high polymer composite sound-absorbing material
The first step, by mass fraction be 1% sulfuric acid dissolution in water, by bath raio 1:20~1:200 input palms are fine
Dimension, disseminates 3h under conditions of 70 DEG C, material leaching is come out, and is placed under flowing water and cleans, drying.Mass fraction is minimum
The hydrogen peroxide of 1% sodium hydroxide and mass fraction minimum 2.4% is dissolved in water, by bath raio 1:After 200 input acid processing
Monkey grass, 5h is disseminated under conditions of 70 DEG C, until fiber becomes white and swims on solution；
Second step washs the monkey grass repeatedly, until neutrality is presented in the monkey grass, drying is made
The hollow fibril of monkey grass；The hollow fibril of the monkey grass is dissolved in the solution of acetic acid and acetic anhydride, the palm is made
Fiber spreads out；
Third walks, and is added compared with the quality of monkey grass into the solvent, the perchloric acid that mass fraction is 0.5%,
3h~5h is disseminated under conditions of 20 DEG C, fiber pulp is made, the fiber pulp is filtered, and washing is until neutral, drying system repeatedly
Obtain water repellent monkey grass suede；
Water-soluble PVA is configured to the suspension of 10wt% by the 4th step, the strong stirring in 90 DEG C of water-bath, until
It is completely dissolved.10% PVA is diluted to the total 500mL of 1wt% and is mixed with modified monkey grass suede 20g, is put into blender
In, stir 3min；
Mixture is placed on the sieve of 200 mesh, is put into baking oven and dries by the 5th step.
Material average sound absorption coefficient is 0.43.It is all higher than 0.2 in the acoustic absorptivity of 500Hz or more, starts to have sound absorption properties
Can, it is positively retained at 0.86 or more in the acoustic absorptivity of the high-frequency region of 3000HZ or more, material, ranges up to 0.96.
Embodiment 2：A kind of preparation of hollow biomass fiber/high polymer composite sound-absorbing material
The first step, by the dioxygen water dissolution of the sodium hydroxide of mass fraction minimum 2% and mass fraction minimum 3%
In water, by bath raio 1:50 input acid treated Calotropis gigantea network fibers, disseminate 2h under conditions of 80 DEG C.Repeat aforementioned step
Rapid 2 times, until fiber becomes white and swims on solution；
Second step washs the Calotropis gigantea network fiber repeatedly, until neutrality is presented in the Calotropis gigantea network fiber,
The hollow fibril of Calotropis gigantea network fiber is made in drying；The hollow fibril of Calotropis gigantea network fiber is dissolved in dimethylformamide
In solution, the Calotropis gigantea network fiber is made to spread out；
Third walks, and 1% chloroacetic chloride is added into the solvent, 0.05% pyridine is added, is soaked under conditions of 40 DEG C
3h is contaminated, fiber pulp is made, the fiber pulp is filtered, until neutral, water repellent Calotropis gigantea network fiber is made in drying for washing repeatedly
Suede；
Water-soluble PVA is configured to the suspension of 10wt% by the 4th step, the strong stirring in 90 DEG C of water-bath, until
It is completely dissolved.10% PVA is diluted to the total 500mL of 2wt% and is mixed with modified Calotropis gigantea network copolymer of fiber suede 20g, is put into stirring
In machine, 3min is stirred；
Mixture is placed on the sieve of 200 mesh, is put into baking oven and dries by the 5th step.
Using the non-woven sound-absorbing material of akund made of above method, average sound absorption coefficient 0.35.
The acoustic absorptivity of 1000Hz or more is all higher than 0.2, starts with sound absorbing performance.The suction of material when sound frequency is 2000Hz
Sonic system number reaches 0.6, is positively retained at 0.8 or more in the acoustic absorptivity of the high-frequency region of 4000HZ or more, material, ranges up to
0.86。
Embodiment 3：A kind of preparation of hollow biomass fiber/high polymer composite sound-absorbing material
The first step, by mass fraction be 1% sulfuric acid dissolution in water, by bath raio 1:50 input monkey grass, at 80 DEG C
Under conditions of disseminate 2h, material leaching is come out, be placed under flowing water clean, drying.By the hydrogen-oxygen of mass fraction minimum 1%
The hydrogen peroxide for changing sodium and mass fraction minimum 4% is dissolved in water, by bath raio 1:200 input acid treated monkey grass,
2h is disseminated under conditions of 80 DEG C, until fiber becomes white and swims on solution；
Second step washs the monkey grass repeatedly, until neutrality is presented in the monkey grass, drying is made
The hollow fibril of monkey grass；The hollow fibril of the monkey grass is dissolved in the solution of acetic anhydride, the monkey grass point is made
It scatters and；
Third walks, and is added compared with the quality of monkey grass into the solvent, the perchloric acid that mass fraction is 0.4%
Aluminium disseminates 1h under conditions of 30 DEG C, and fiber pulp is made, the fiber pulp is filtered, and washing is until neutral, drying system repeatedly
Obtain water repellent monkey grass suede；
Water-soluble PVA is configured to the suspension of 10wt% by the 4th step, the strong stirring in 90 DEG C of water-bath, until
It is completely dissolved.10% PVA is diluted to the total 500mL of 1.5wt% and is mixed with modified monkey grass suede 20g, is put into blender
In, stir 3min；
Mixture is placed on the sieve of 200 mesh, is put into baking oven and dries by the 5th step.
In conclusion the present invention provides a kind of preparation sides of hollow biomass fiber/high polymer composite sound-absorbing material
Method prepares non-woven sound-absorbing material using the hollow fibril of palm as raw material.Hollow biomass fiber/high polymer composite sound-absorbing material
The average sound absorption coefficient of composite material reach 0.6 or more.It is all higher than 0.2 in the acoustic absorptivity of 100Hz or more materials, is started
With sound absorbing performance.0.3 is can reach in the acoustic absorptivity of 500Hz, the acoustic absorptivity of material reaches when sound frequency is 800Hz
To 0.7, hereafter as the acoustic absorptivity of the elevated material of frequency has the fluctuating change of numerical values recited, but maintain always 0.7 with
On.Reach 0.95 or more maximum value in the acoustic absorptivity of the high-frequency region of 2500HZ or more, material.Make natural hollow biomass
Fiber is fully used；Biodegradable, it is environmentally protective；The density of fibrous material is low, lightweight；To the sound wave of different frequency range
There is preferable sound absorbing performance.So the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization
Value.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection of the invention
Range is without being limited thereto.Those skilled in the art on the basis of the present invention made by equivalent substitute or transformation, in this hair
Within bright protection domain.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of preparation method of hollow biomass fiber/high polymer composite sound-absorbing material, which is characterized in that including following step
Suddenly：
(1) hollow biomass fiber is subjected to sour processing, then cleaning, drying, obtains acid treated hollow biomass fiber；
(2) treated that hollow biomass fiber carries out bleaching oxidation processes for the acid for obtaining step (1), is washed out into
Property, it is dried to obtain the hollow fibril of hollow biomass fiber；
(3) the hollow fibril dissolving of hollow biomass fiber that step (2) obtains is disperseed in a solvent, catalysis is then added
Agent is reacted, and fiber pulp is prepared, and by the fiber plasm scouring to neutrality, is dried to obtain hollow biomass fiber suede；
(4) it mixes with the hollow biomass fiber suede that step (3) obtains after dissolving water-soluble high polymer, is dried after being stirred to react
It is dry, obtain hollow biomass fiber/high polymer composite sound-absorbing material.
2. according to the method described in claim 1, it is characterized in that, in step (1), the hollow biomass fiber is Huang
Fiber crops, akund, monkey grass, Yang Xu or loofah fiber.
3. according to the method described in claim 1, it is characterized in that, in step (3), the solvent be acetic acid, acetic anhydride or
Mixed solution that acetic acid and acetic anhydride are mixed to form with arbitrary proportion, the dimethylformamide containing chloroacetic chloride contain chloroacetic chloride
Dimethylacetylamide.
4. according to the method described in claim 1, it is characterized in that, in step (4), the water-soluble high polymer is poly- second
Enol, polyethylene glycol oxide, polyacrylamide or polyvinylpyrrolidone.
5. according to the method described in claim 1, it is characterized in that, in step (3), the catalyst is perchloric acid, high chlorine
Sour aluminium or pyridine.
6. according to the method described in claim 1, it is characterized in that, in step (1), the bleaching oxidation processes are in highly basic
Solution is handled with hydrogen peroxide or the mixed solution of SODIUM PERCARBONATE solution composition.
7. according to the method described in claim 1, it is characterized in that, the preparation method specifically comprises the following steps：
(1) bath raio 1 is pressed:20~1:200 put into hollow biomass fiber in acid solution, disseminate 3h under conditions of 70~90 DEG C
~5h comes out material leaching, cleans, and drying obtains acid treated hollow biomass fiber；
(2) bleaching oxidant is dissolved in water, by bath raio 1:20~1:200 input acid treated hollow biomass fibers,
3h~5h is disseminated under conditions of 70~90 DEG C, until fiber becomes white and swims on solution, is washed out to neutrality, it is dry
Obtain the hollow fibril of hollow biomass fiber；
(3) the hollow hollow fibril of biomass fiber is dissolved in the solution of acetic acid or acetic anhydride, makes the hollow biology
The hollow fibrillar dispersion of matter fiber comes, and catalyst is then added and carries out acetylization reaction, disseminates 3h under conditions of 20~50 DEG C
~5h, is prepared fiber pulp, by the fiber plasm scouring to neutrality, is dried to obtain hollow biomass fiber suede；
(4) water-soluble high polymer is configured to the suspension of 5~20wt%, the strong stirring in 70~90 DEG C of water-bath,
To being completely dissolved, mixes with the hollow biomass fiber suede that step (3) obtains after high polymeric solution is diluted, dried after being stirred to react
It is dry, obtain hollow biomass fiber/high polymer composite sound-absorbing material.
8. the method according to the description of claim 7 is characterized in that the bleaching oxidant is mass fraction minimum 1%
The mixed liquor that the hydrogen peroxide of sodium hydroxide and mass fraction minimum 2.4% is mixed to get.
9. the method according to the description of claim 7 is characterized in that the mixed solution of the hollow biomass fiber and high polymer
In be additionally added ES fibers.
10. a kind of hollow biomass fiber that method described in claim 1 is prepared/high polymer composite sound-absorbing material.
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| CN113293612A (en) * | 2021-05-25 | 2021-08-24 | 中国科学院昆明植物研究所 | Defatted calotropis gigantea seed fiber preparation method and defatted calotropis gigantea seed fiber |
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| CN105399396A (en) * | 2015-12-15 | 2016-03-16 | 冯丹 | Sound absorption noise reduction thermal insulation wallboard and manufacturing method therefor |
| CN105970594A (en) * | 2016-05-11 | 2016-09-28 | 苏州大学 | Preparation method of water-repellent palm fiber batts |
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| 陈长洁: ""棕榈原纤及其非织造材料的制备与性能研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109734377A (en) * | 2019-01-31 | 2019-05-10 | 商丘市睢阳区水务局 | A kind of energy saving and environment friendly construction material and preparation method thereof |
| CN113293612A (en) * | 2021-05-25 | 2021-08-24 | 中国科学院昆明植物研究所 | Defatted calotropis gigantea seed fiber preparation method and defatted calotropis gigantea seed fiber |
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| CN108623959B (en) | 2020-10-27 |
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Effective date of registration: 20221221 Address after: 215000 Kaixian Gong Village, Miaogang Town, Wujiang District, Suzhou City, Jiangsu Province Patentee after: WUJIANG GANCHANG TEXTILE Co.,Ltd. Address before: 226000 building D1, Jianghai Zhihui garden, 266 New Century Avenue, Tongzhou District, Nantong City, Jiangsu Province Patentee before: NANTONG TEXTILE & SILK INDUSTRIAL TECHNOLOGY Research Institute Patentee before: SOOCHOW University |