CN113802269A - Sound-proof, fireproof and heat-insulating melt-blown fabric and preparation method and application thereof - Google Patents

Sound-proof, fireproof and heat-insulating melt-blown fabric and preparation method and application thereof Download PDF

Info

Publication number
CN113802269A
CN113802269A CN202110976316.4A CN202110976316A CN113802269A CN 113802269 A CN113802269 A CN 113802269A CN 202110976316 A CN202110976316 A CN 202110976316A CN 113802269 A CN113802269 A CN 113802269A
Authority
CN
China
Prior art keywords
proof
sound
heat
reaction kettle
fireproof
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110976316.4A
Other languages
Chinese (zh)
Inventor
郑善
郑星
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Langhua Technology Development Co ltd
Original Assignee
Tianjin Langhua Technology Development Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin Langhua Technology Development Co ltd filed Critical Tianjin Langhua Technology Development Co ltd
Priority to CN202110976316.4A priority Critical patent/CN113802269A/en
Publication of CN113802269A publication Critical patent/CN113802269A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • D04H1/55—Polyesters
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/152—Preparation of hydrogels
    • C01B33/154—Preparation of hydrogels by acidic treatment of aqueous silicate solutions
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/157—After-treatment of gels
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/157—After-treatment of gels
    • C01B33/158—Purification; Drying; Dehydrating
    • C01B33/1585—Dehydration into aerogels
    • 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
    • D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—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 by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • 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
    • D06M11/77—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 silicon or compounds thereof
    • D06M11/79—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 silicon or compounds thereof with silicon dioxide, silicic acids or their salts
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • 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
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/32—Polyesters
    • 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
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/30—Flame or heat resistance, fire retardancy properties

Abstract

The invention relates to a sound-proof, fireproof and heat-proof melt-blown fabric, a preparation method and application thereof. The preparation method of the sound-proof, fireproof and heat-proof meltblown fabric comprises the steps of melting PET polyester, then feeding the molten PET polyester into a melt-blowing device for melt-blowing, simultaneously spraying silicon dioxide aerogel powder on the surface of the sprayed PET fiber in the process of stretching the PET polyester into fibers by utilizing traction airflow, and cooling and collecting the fibers to obtain the sound-proof, fireproof and heat-proof meltblown fabric. The sound-insulating, fireproof and heat-insulating melt-blown fabric has good sound-absorbing effect, the porous characteristic of the silicon dioxide aerogel powder is utilized by spraying the silicon dioxide aerogel powder on the surface of the polyester, the frequency range of sound absorption is further widened, and the low-frequency sound can be well absorbed, so that the sound-insulating property is improved.

Description

Sound-proof, fireproof and heat-insulating melt-blown fabric and preparation method and application thereof
Technical Field
The invention relates to the field of sound insulation materials, in particular to a sound insulation, fire prevention and heat insulation melt-blown fabric, and a preparation method and application thereof.
Background
Urban noise mainly comes from traffic noise, industrial noise, building construction noise, social life noise and the like, and increasingly serious interference and harm to residents become a great public nuisance in urban environment.
The existing sound insulation or absorption materials mostly adopt methods of increasing the thickness or reducing the surface density to increase the number of micro holes in the materials, and the like to reduce noise and absorb sound, and the micro holes or cavities in the materials enable sound waves to vibrate air in the micro holes when passing through the sound absorption materials, so that the sound energy is converted into heat energy, and the purpose of sound absorption is achieved.
Polyester sound absorption cotton is an ideal material for a sound insulation device, but the sound absorption performance of the polyester sound absorption cotton is in a noise range of 125-4000 HZ, the sound absorption effect on middle and high frequency is good, and the sound absorption effect on low frequency 30-150HZ is poor. Meanwhile, it is flammable, and has poor water absorption and heat insulation properties, etc., which hinders the use.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a sound-proof, fireproof and heat-proof melt-blown fabric, and a preparation method and application thereof. The sound-absorbing, fireproof and heat-insulating melt-blown fabric has good sound-absorbing effect, the porous characteristic of the silicon dioxide aerogel powder is utilized by spraying the silicon dioxide aerogel powder on the surface of the polyester, the frequency range of sound absorption is further widened, and the sound-absorbing effect on low-frequency sound can be good, so that the sound-absorbing performance is improved; meanwhile, the fireproof and heat-insulating properties of the composite material are improved.
One of the purposes of the invention is to provide a preparation method of the sound-proof, fireproof and heat-insulating meltblown fabric, which comprises the steps of melting PET polyester, then feeding the molten PET polyester into a melt-blowing device for melt-blowing, simultaneously spraying silicon dioxide aerogel powder on the surface of the sprayed PET fiber, and cooling and collecting the sprayed PET fiber to obtain the sound-proof, fireproof and heat-insulating meltblown fabric.
Preferably, the average particle size of the silica aerogel powder is in the range of 5-9um, and the maximum particle size is not more than 10 um.
Preferably, the pore diameter of the silica aerogel powder is in the range of 20-30 nm.
Preferably, the airflow speed of the traction airflow is 10000-12000m/min, the airflow temperature of the traction airflow is 290 ℃, and the airflow pressure of the traction airflow is 0.14-0.18 Mpa.
Preferably, the surface density of the sound-proof, fire-proof and heat-proof melt-blown fabric is 300g/m2～600g/m2。
Preferably, a single-screw extruder is adopted for extrusion and melting, and the heating temperature is 260-270 ℃.
Preferably, the content of the silicon dioxide aerogel powder in the sound-proof, fireproof and heat-proof melt-blown cloth is 1.5-3 wt%.
Preferably, the preparation method of the silica aerogel powder comprises the following steps:
(1) preparation of a mixed solution of a silicon source and a solvent
Putting sodium silicate with the modulus of 2.8 into a reaction kettle, adding deionized water with the mass of 3 times that of the sodium silicate for dilution, stirring the reaction kettle at the speed of 240 revolutions per minute for 30 minutes, and filtering the mixture through a 200-mesh sieve to obtain a sodium silicate solution;
(2) sol gel
Adding nitric acid and water into the nitric acid, diluting the nitric acid to 15 mol/L, adding aluminum nitrate and yttrium nitrate into the nitric acid, uniformly mixing, and adding the mixture into the sodium silicate solution obtained in the step (1) in a manner of injecting the mixture into a liquid (simultaneously injecting a plurality of metering pumps); the whole feeding time is controlled to be 20 minutes, the stirring speed is 300 revolutions per minute, and the pH value of the sodium silicate solution is controlled to be 2.5, so that sol is obtained; the molar ratio of the aluminum nitrate to the yttrium nitrate is 100: 4; molar ratio of aluminum nitrate oxide to silicon oxide in sodium silicate 4: 100, respectively;
(3) gel
Taking sodium hydroxide or ammonia water, adding deionized water to dilute until the pH value is 11, and adding the sodium hydroxide or ammonia water into the reaction kettle in a spraying manner; rapidly stirring the materials in the reaction kettle at 1800 rpm while spraying, and stopping spraying when the pH value of the materials in the reaction kettle is 5.5 to obtain gel;
(4) aging of
Continuously stirring the mixture in the reaction kettle for 20 hours at the speed of 30 r/min, aging the materials in the reaction kettle, and controlling the temperature of the materials in the reaction kettle to be 15-20 ℃;
(5) solvent replacement
Continuously stirring for 90 minutes in the reaction kettle, and simultaneously adding a displacement solvent n-hexane with the same volume as the aged material in the reaction kettle in the step (4) to displace the residual water;
(6) surface modification
Continuously stirring in the reaction kettle, and simultaneously continuously adding the coupling agent phenyltriethoxysilane with the same volume as the aged material in the reaction kettle in the step (4); stirring for 80 minutes to obtain a silicon aerogel precursor coated with a replacement solvent n-hexane and a coupling agent phenyltriethoxysilane;
(7) drying
Putting the silicon aerogel precursor into a drying kettle, filling nitrogen into the drying kettle to remove oxygen until the oxygen content in the drying kettle is less than 3%, then performing microwave vacuum drying on the materials in the drying kettle for 70 minutes at a microwave frequency of 2450MHZ and a negative pressure of 0.1MPa in the drying kettle at a temperature of 100 ℃, and drying to obtain solid powdery silicon aerogel; then grinding the silicon aerogel so that the average particle size of the silicon dioxide aerogel powder is in the range of 5-9um, and the maximum particle size is not more than 10 um.
Preferably, the reaction temperature of the materials in the steps (1) to (3) is 15 to 20 ℃.
The second purpose of the invention is to provide the sound-proof, fire-proof and heat-proof melt-blown fabric prepared by the preparation method of the first purpose of the invention.
It is a third object of the present invention to provide the use of the second object of the present invention in a sound, fire and heat insulating meltblown fabric.
Has the advantages that:
the sound-proof, fireproof and heat-insulating melt-blown fabric has better sound absorption effect, can reduce the weight of the sound-proof, fireproof and heat-insulating melt-blown fabric, and improves the flame retardant effect of the sound-proof, fireproof and heat-insulating melt-blown fabric.
Detailed Description
While the present invention will be described in detail with reference to the following examples, it should be understood that the following examples are illustrative of the present invention and are not to be construed as limiting the scope of the present invention.
Example 1
The preparation method of the silica aerogel powder comprises the following steps:
(1) preparation of a mixed solution of a silicon source and a solvent
Putting sodium silicate with the modulus of 2.8 into a reaction kettle, adding deionized water with the mass of 3 times that of the sodium silicate for dilution, stirring the reaction kettle at the speed of 240 revolutions per minute for 30 minutes, and filtering the mixture through a 200-mesh sieve to obtain a sodium silicate solution;
(2) sol gel
Adding nitric acid and water into the nitric acid, diluting the nitric acid to 15 mol/L, adding aluminum nitrate and yttrium nitrate into the nitric acid, uniformly mixing, and adding the mixture into the sodium silicate solution obtained in the step (1) in a manner of injecting the mixture into a liquid (simultaneously injecting a plurality of metering pumps); the whole feeding time is controlled to be 20 minutes, the stirring speed is 300 revolutions per minute, and the pH value of the sodium silicate solution is controlled to be 2.5, so that sol is obtained; the molar ratio of the aluminum nitrate to the yttrium nitrate is 100: 4; molar ratio of aluminum nitrate oxide to silicon oxide in sodium silicate 4: 100, respectively;
(3) gel
Taking sodium hydroxide or ammonia water, adding deionized water to dilute until the pH value is 11, and adding the sodium hydroxide or ammonia water into the reaction kettle in a spraying manner; rapidly stirring the materials in the reaction kettle at 1800 rpm while spraying, and stopping spraying when the pH value of the materials in the reaction kettle is 5.5 to obtain gel;
(4) aging of
Continuously stirring the mixture in the reaction kettle for 20 hours at the speed of 30 r/min, aging the materials in the reaction kettle, and controlling the temperature of the materials in the reaction kettle to be 17 ℃;
(5) solvent replacement
Continuously stirring for 90 minutes in the reaction kettle, and simultaneously adding a displacement solvent n-hexane with the same volume as the aged material in the reaction kettle in the step (4) to displace the residual water;
(6) surface modification
Continuously stirring in the reaction kettle, and simultaneously continuously adding the coupling agent phenyltriethoxysilane with the same volume as the aged material in the reaction kettle in the step (4); stirring for 80 minutes to obtain a silicon aerogel precursor coated with a replacement solvent n-hexane and a coupling agent phenyltriethoxysilane;
(7) drying
And (2) putting the silicon aerogel precursor into a drying kettle, filling nitrogen into the drying kettle to remove oxygen until the oxygen content in the drying kettle is less than 3%, then performing microwave vacuum drying on the materials in the drying kettle for 70 minutes at a microwave frequency of 2450MHZ and a negative pressure of 0.1MPa in the drying kettle at a temperature of 100 ℃, and drying to obtain solid powdery silicon aerogel. The reaction temperature of the materials in the steps (1) to (3) in the above preparation method is 17 ℃.
Then, the silica aerogel is ground so that the average particle diameter of the silica aerogel powder is 7um and the maximum particle diameter is not more than 10 um.
Example 2
The preparation method is basically the same as that of the example 1, except that the reaction temperature of the materials in the steps (1) to (3) in the example 2 is 20 ℃, and the temperature of the materials in the reaction kettle is controlled to be 20 ℃ when the step (4) is aged.
Then, the silicon aerogel is ground, so that the average particle size of the silicon dioxide aerogel powder is 9um, and the maximum particle size of the silicon dioxide aerogel powder is not more than 10 um.
Example 3
The preparation method is basically the same as that of the example 1, except that the reaction temperature of the materials in the steps (1) to (3) in the example 2 is 15 ℃, and the temperature of the materials in the reaction kettle is controlled to be 15 ℃ when the step (4) is aged.
Then, the silicon aerogel is ground, so that the average particle size of the silicon dioxide aerogel powder is 5um, and the maximum particle size is not more than 10 um.
The silica aerogel powder prepared in examples 1 to 3 had a pore size ranging from 20 to 30 nm.
Example 4
A preparation method of sound-proof, fireproof and heat-proof melt-blown cloth comprises the steps of melting PET polyester, then feeding the molten PET polyester into melt-blowing equipment for melt-blowing, and extruding and melting the PET polyester by adopting a single-screw extruder, wherein the heating temperature is 260 ℃; simultaneously spraying silicon dioxide aerogel powder (the silicon dioxide aerogel powder prepared in the embodiment 1) on the surface of the sprayed PET fiber, wherein the silicon dioxide aerogel powder is put into a storage hopper arranged on a high-speed hot air flow pipeline of a screw extruder, polyester is melted, extruded and drawn and stretched under high-speed hot air flow in the screw extruder according to the conventional process, meanwhile, the silicon dioxide aerogel powder also enters the high-speed hot air flow by utilizing the negative pressure effect generated by the high-speed hot air flow, and is uniformly adhered on the surface of the hot-adhesive melt-blown fiber at a die head nozzle, the air flow velocity of the drawing air flow is 10000m/min, the air flow temperature of the drawing air flow is 290 ℃, and the air flow pressure of the drawing air flow is 0.14 Mpa; and then cooling, forming and collecting (the collecting speed can be adjusted according to the surface density requirement), thus preparing the sound-proof, fireproof and heat-insulating melt-blown fabric.
The surface density of the sound-proof, fireproof and heat-insulating melt-blown cloth prepared by the preparation method is 600g/m2(ii) a The melt-blown cloth with sound insulation, fire prevention and heat insulation contains 1.5 wt% of silicon dioxide aerogel powder.
Example 5
A preparation method of sound-proof, fireproof and heat-proof melt-blown cloth comprises the steps of melting PET polyester, then feeding the molten PET polyester into melt-blowing equipment for melt-blowing, and extruding and melting the PET polyester by adopting a single-screw extruder, wherein the heating temperature is 270 ℃; simultaneously spraying silicon dioxide aerogel powder (the silicon dioxide aerogel powder prepared in the embodiment 1) on the surface of the sprayed PET fiber, wherein the silicon dioxide aerogel powder is put into a storage hopper arranged on a high-speed hot air flow pipeline of a screw extruder, polyester is melted, extruded and drawn and stretched in the screw extruder according to the conventional process under the flow of the high-speed hot air, meanwhile, the silicon dioxide aerogel powder also enters the high-speed hot air flow by utilizing the negative pressure effect generated by the high-speed hot air flow, and is uniformly adhered to the surface of the hot-melt fiber at a nozzle of a die head, the airflow speed of the drawing airflow is 12000m/min, the airflow temperature of the drawing airflow is 290 ℃, and the airflow pressure of the drawing airflow is 0.18 Mpa; and then cooling, forming and collecting (the collecting speed can be adjusted according to the surface density requirement), thus preparing the sound-proof, fireproof and heat-insulating melt-blown fabric.
The surface density of the sound-proof, fireproof and heat-insulating melt-blown cloth prepared by the preparation method is 300g/m2(ii) a The melt-blown cloth with sound insulation, fire prevention and heat insulation contains 2 wt% of silicon dioxide aerogel powder.
Example 6
A preparation method of sound-proof, fireproof and heat-proof melt-blown cloth comprises the steps of melting PET polyester, then feeding the molten PET polyester into melt-blowing equipment for melt-blowing, and extruding and melting the PET polyester by adopting a single-screw extruder, wherein the heating temperature is 265 ℃; simultaneously spraying silicon dioxide aerogel powder (the silicon dioxide aerogel powder prepared in the embodiment 1) on the surface of the sprayed PET fiber, wherein the silicon dioxide aerogel powder is put into a storage hopper arranged on a high-speed hot air flow pipeline of a screw extruder, polyester is melted, extruded and drawn and stretched under high-speed hot air flow in the screw extruder according to the conventional process, meanwhile, the silicon dioxide aerogel powder also enters the high-speed hot air flow by utilizing the negative pressure effect generated by the high-speed hot air flow, and is uniformly adhered on the surface of the hot-melt fiber at a die head nozzle, the air flow velocity of the drawing air flow is 11000m/min, the air flow temperature of the drawing air flow is 290 ℃, and the air flow pressure of the drawing air flow is 0.16 Mpa; and then cooling, forming and collecting (the collecting speed can be adjusted according to the surface density requirement), thus preparing the sound-proof, fireproof and heat-insulating melt-blown fabric.
The surface density of the sound-proof, fireproof and heat-insulating melt-blown cloth prepared by the preparation method is 450g/m2(ii) a The melt-blown cloth with sound insulation, fire prevention and heat insulation contains 3 wt% of silicon dioxide aerogel powder.
Example 7
A preparation method of sound-proof, fireproof and heat-proof melt-blown cloth comprises the steps of melting PET polyester, then feeding the molten PET polyester into melt-blowing equipment for melt-blowing, and extruding and melting the PET polyester by adopting a single-screw extruder, wherein the heating temperature is 265 ℃; simultaneously spraying silicon dioxide aerogel powder (the silicon dioxide aerogel powder prepared in the embodiment 1) on the surface of the sprayed PET fiber, wherein the silicon dioxide aerogel powder is put into a storage hopper arranged on a high-speed hot air flow pipeline of a screw extruder, polyester is melted, extruded and drawn and stretched under high-speed hot air flow in the screw extruder according to the conventional process, meanwhile, the silicon dioxide aerogel powder also enters the high-speed hot air flow by utilizing the negative pressure effect generated by the high-speed hot air flow, and is uniformly adhered on the surface of the hot-adhesive melt-blown fiber at a die head nozzle, the air flow velocity of the drawing air flow is 11500m/min, the air flow temperature of the drawing air flow is 290 ℃, and the air flow pressure of the drawing air flow is 0.17 Mpa; and then cooling, forming and collecting (the collecting speed can be adjusted according to the surface density requirement), thus preparing the sound-proof, fireproof and heat-insulating melt-blown fabric.
The surface density of the sound-proof, fireproof and heat-insulating melt-blown cloth prepared by the preparation method is 500g/m2(ii) a The sound-proof, fire-proof and heat-proof melt-blown cloth contains 2.5 wt% of silicon dioxide aerogel powder.
Comparative example 1
The raw materials and the preparation process of the melt-blown cloth for sound insulation, fire prevention and heat insulation in the embodiment 6 are the same, and the difference is that the average pore diameter of the silicon dioxide aerogel powder is 50 nm. The surface density of the sound-proof, fireproof and heat-insulating melt-blown fabric prepared by the preparation method is 500 g/m.
Comparative example 2
The preparation process of the sound-proof, fire-proof and heat-insulating meltblown fabric in example 6 is the same, except that the raw material of the sound-proof, fire-proof and heat-insulating meltblown fabric does not contain silica aerogel powder, and the areal density of the sound-proof, fire-proof and heat-insulating meltblown fabric prepared by the preparation method is 700g/m2。
Comparative example 3
The raw materials and the preparation process of the sound-proof, fire-proof and heat-proof melt-blown fabric in the embodiment 6 are the same,except that the average particle size of the silica aerogel powder was 20 um. The surface density of the sound-proof, fireproof and heat-insulating melt-blown cloth prepared by the preparation method is 550g/m2。
The sound-proof, fire-proof, and heat-insulating meltblown fabrics of examples 4-7 according to the present invention and comparative examples 1-3 were subjected to flame retardancy and sound absorption tests. The sound absorption effect is measured by GB/T18696.2-2002, and the impact resistance times refer to the impact strength of 5KJ/m2The impact force of the impact force impacts the sound-proof cloth until the sound-proof, fireproof and heat-proof melt-blown cloth is stopped when the powder falls seriously, the test result is shown in the following table 1,
TABLE 1 Performance data for Sound, fire, Heat insulating meltblown fabrics
Figure DEST_PATH_IMAGE002
The comparison of the data shows that the attraction effect of the sound-proof, fire-proof and heat-proof melt-blown cloth is obviously improved at a low-frequency position.
The sound-proof, fireproof and heat-proof melt-blown fabric can be firmly attached to the polyester fiber only under the proper pore diameter and particle size of the silicon dioxide aerogel powder.
Compared with polyester fiber, the sound-proof, fireproof and heat-proof melt-blown fabric provided by the invention has the advantage that the flame retardant effect is obviously improved.
Compared with polyester fiber, the sound-proof, fireproof and heat-proof melt-blown fabric provided by the invention has the advantage that the weight reduction effect is obviously improved.
The sound-proof, fireproof and heat-insulating melt-blown fabric can be used for sound insulation of automobile interiors and sound insulation of subways and the like.

Claims (10)

1. A preparation method of a sound-proof, fireproof and heat-proof melt-blown fabric is characterized by comprising the following steps:
and melting the PET polyester, then feeding the PET polyester into melting and blowing equipment, stretching the PET polyester into fibers by utilizing a traction airflow, simultaneously spraying silicon dioxide aerogel powder on the surface of the sprayed PET fibers, and cooling and collecting the PET fibers to obtain the sound-insulation, fireproof and heat-insulation melting and blowing cloth.
2. The method of making an acoustical, fire-proof, and thermal insulating meltblown fabric according to claim 1,
the average grain diameter of the silicon dioxide aerogel powder is 5-9 um.
3. The method of making an acoustical, fire-proof, and thermal insulating meltblown fabric according to claim 1,
the average particle size range of the silicon dioxide aerogel powder is 5-9um, and the maximum particle size is not more than 10 um.
4. The method of making an acoustical, fire-proof, and thermal insulating meltblown fabric according to claim 1,
the air flow speed of the traction air flow is 10000-12000m/min, the air flow temperature of the traction air flow is 290 ℃, and the air flow pressure of the traction air flow is 0.14-0.18 Mpa.
5. The method of making an acoustical, fire-proof, and thermal insulating meltblown fabric according to claim 1,
the surface density of the sound-proof, fireproof and heat-proof melt-blown fabric is 300g/m2～600g/m2。
6. The method of making an acoustical, fire-proof, and thermal insulating meltblown fabric according to claim 1,
and (3) extruding and melting by adopting a single-screw extruder, wherein the heating temperature is 260-270 ℃.
7. The method of making an acoustical, fire-proof, and thermal insulating meltblown fabric according to claim 1,
the content of the silicon dioxide aerogel powder in the sound-proof, fireproof and heat-proof melt-blown fabric is 1.5-3 wt%.
8. The method of making an acoustical, fire-proof, and thermal insulating meltblown fabric according to claim 1,
the preparation method of the silicon dioxide aerogel powder comprises the following steps:
(1) preparation of a mixed solution of a silicon source and a solvent
Putting sodium silicate with the modulus of 2.8 into a reaction kettle, adding deionized water with the mass of 3 times that of the sodium silicate for dilution, stirring the reaction kettle at the speed of 240 revolutions per minute for 30 minutes, and filtering the mixture through a 200-mesh sieve to obtain a sodium silicate solution;
(2) sol gel
Adding nitric acid and water into the nitric acid, diluting the nitric acid to 15 mol/L, adding aluminum nitrate and yttrium nitrate into the nitric acid, uniformly mixing, and adding the mixture into the sodium silicate solution obtained in the step (1) in a manner of injecting the mixture into the solution under liquid; the whole feeding time is controlled to be 20 minutes, the stirring speed is 300 revolutions per minute, and the pH value of the sodium silicate solution is controlled to be 2.5, so that sol is obtained; the molar ratio of the aluminum nitrate to the yttrium nitrate is 100: 4; molar ratio of aluminum nitrate oxide to silicon oxide in sodium silicate 4: 100, respectively;
gel
Taking sodium hydroxide or ammonia water, adding deionized water to dilute until the pH value is 11, and adding the sodium hydroxide or ammonia water into the reaction kettle in a spraying manner; rapidly stirring the materials in the reaction kettle at 1800 rpm while spraying, and stopping spraying when the pH value of the materials in the reaction kettle is 5.5 to obtain gel;
(4) aging of
Continuously stirring the mixture in the reaction kettle for 20 hours at the speed of 30 r/min, aging the materials in the reaction kettle, and controlling the temperature of the materials in the reaction kettle to be 15-20 ℃;
(5) solvent replacement
Continuously stirring for 90 minutes in the reaction kettle, and simultaneously adding a displacement solvent n-hexane with the same volume as the aged material in the reaction kettle in the step (4) to displace the residual water;
(6) surface modification
Continuously stirring in the reaction kettle, and simultaneously continuously adding the coupling agent phenyltriethoxysilane with the same volume as the aged material in the reaction kettle in the step (4); stirring for 80 minutes to obtain a silicon aerogel precursor coated with a replacement solvent n-hexane and a coupling agent phenyltriethoxysilane;
(7) drying
And (2) putting the silicon aerogel precursor into a drying kettle, filling nitrogen into the drying kettle to remove oxygen until the oxygen content in the drying kettle is less than 3%, then performing microwave vacuum drying on the materials in the drying kettle for 70 minutes at a microwave frequency of 2450MHZ and a negative pressure of 0.1MPa in the drying kettle at a temperature of 100 ℃, and drying to obtain solid powdery silicon aerogel.
9. The sound, fire, and heat insulating meltblown prepared by the method of any of claims 1-8.
10. Use of the acoustic, fire and thermal barrier meltblown fabric according to claim 9.
CN202110976316.4A 2021-08-24 2021-08-24 Sound-proof, fireproof and heat-insulating melt-blown fabric and preparation method and application thereof Pending CN113802269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110976316.4A CN113802269A (en) 2021-08-24 2021-08-24 Sound-proof, fireproof and heat-insulating melt-blown fabric and preparation method and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110976316.4A CN113802269A (en) 2021-08-24 2021-08-24 Sound-proof, fireproof and heat-insulating melt-blown fabric and preparation method and application thereof

Publications (1)

Publication Number Publication Date
CN113802269A true CN113802269A (en) 2021-12-17

Family

ID=78941646

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110976316.4A Pending CN113802269A (en) 2021-08-24 2021-08-24 Sound-proof, fireproof and heat-insulating melt-blown fabric and preparation method and application thereof

Country Status (1)

Country Link
CN (1) CN113802269A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101029433A (en) * 2007-03-06 2007-09-05 天津工业大学 Production and producer for functional modified microgranular melt-jetting non-woven cloth
CN107254204A (en) * 2017-06-28 2017-10-17 郑善 A kind of ultra-thin fire prevention water paint and preparation method thereof
CN107312166A (en) * 2017-06-28 2017-11-03 郑善 A kind of modified PET polyester and its preparation method and application
WO2018021319A1 (en) * 2016-07-27 2018-02-01 三菱ケミカル株式会社 Fibers for sound absorbing/insulating material, use of said fibers, manufacturing method for fibers for sound absorbing/insulating material, and fiber-molded product for sound absorbing/insulating material
CN109232850A (en) * 2018-08-08 2019-01-18 山东新朗华科技有限公司 A kind of fire-retardant low thermal conductivity rigid polyurethane foam of aeroge modified heat resistant and preparation method thereof
CN111041587A (en) * 2019-12-30 2020-04-21 宿迁市美达净化科技有限公司 Silica aerogel modified polypropylene melt-blown nonwoven material and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101029433A (en) * 2007-03-06 2007-09-05 天津工业大学 Production and producer for functional modified microgranular melt-jetting non-woven cloth
WO2018021319A1 (en) * 2016-07-27 2018-02-01 三菱ケミカル株式会社 Fibers for sound absorbing/insulating material, use of said fibers, manufacturing method for fibers for sound absorbing/insulating material, and fiber-molded product for sound absorbing/insulating material
CN107254204A (en) * 2017-06-28 2017-10-17 郑善 A kind of ultra-thin fire prevention water paint and preparation method thereof
CN107312166A (en) * 2017-06-28 2017-11-03 郑善 A kind of modified PET polyester and its preparation method and application
CN108707223A (en) * 2017-06-28 2018-10-26 郑善 A kind of preparation method of modified PET polyester
CN109232850A (en) * 2018-08-08 2019-01-18 山东新朗华科技有限公司 A kind of fire-retardant low thermal conductivity rigid polyurethane foam of aeroge modified heat resistant and preparation method thereof
CN111041587A (en) * 2019-12-30 2020-04-21 宿迁市美达净化科技有限公司 Silica aerogel modified polypropylene melt-blown nonwoven material and preparation method thereof

Similar Documents

Publication Publication Date Title
JP5549954B2 (en) Low density nonwoven material useful for acoustic effect ceiling tile products
WO2018021319A1 (en) Fibers for sound absorbing/insulating material, use of said fibers, manufacturing method for fibers for sound absorbing/insulating material, and fiber-molded product for sound absorbing/insulating material
CN112661429A (en) Preparation method of non-combustible polystyrene particle composite insulation board and product prepared by same
CN108673977B (en) Nano composite heat insulation material and preparation method thereof
CN111171657A (en) Energy-saving environment-friendly fireproof coating and preparation method thereof
CN108621497B (en) A-level flame-retardant aluminum foil bubble heat-insulating material and preparation method thereof
CN107471671A (en) A kind of preparation method of flame retardant heat insulation sound insulation board
CN113802269A (en) Sound-proof, fireproof and heat-insulating melt-blown fabric and preparation method and application thereof
CN103261293A (en) Composite material comprising nanoporous particles
CN113290982B (en) Fire-resistant silica gel material and preparation method thereof
KR20170028273A (en) Method for preparing porous particle containing fiber
CN109534781A (en) A kind of refractory glass fibre enhancing aeroge composite felt and preparation method thereof
CN115725111B (en) Composite aerogel with broadband low-frequency sound absorption and heat insulation functions and preparation and application thereof
CN111910787A (en) Light inner wall capable of realizing heat preservation and sound insulation
CN115895134A (en) Building energy-saving heat-insulating material and preparation method and application thereof
CN111253145B (en) Fiber-reinforced sound absorption composite material and preparation method thereof
CN110204210B (en) Glass wool thermal insulation material, preparation process and application
CN113802369A (en) Melt-blown fabric with photocatalysis function and preparation method and application thereof
CN116606589B (en) Multi-band sound insulation wall coating and preparation method and application thereof
CN114656850B (en) Compound paraffin phase-change microcapsule phase-change heat-insulation water-based ultrathin fireproof coating for rail transit
CN115726192B (en) Preparation method of sound-absorbing flame-retardant fiber-based microporous composite material
CN117164253A (en) Preparation method and application of slag fiber heat-insulating cotton
CN116144207B (en) Sound insulation coating with good absorption effect on low-frequency sound waves and preparation method thereof
CN106189051A (en) A kind of sound absorption sound insulation ABS composite material and preparation method thereof
CN113277831B (en) Preparation method of modified composite silicon dioxide aerogel

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20211217