CN114120949A - Embedded bi-component sound-absorbing cotton and preparation method thereof - Google Patents
Embedded bi-component sound-absorbing cotton and preparation method thereof Download PDFInfo
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- CN114120949A CN114120949A CN202111601042.7A CN202111601042A CN114120949A CN 114120949 A CN114120949 A CN 114120949A CN 202111601042 A CN202111601042 A CN 202111601042A CN 114120949 A CN114120949 A CN 114120949A
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- 229920000742 Cotton Polymers 0.000 title claims abstract description 142
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000010521 absorption reaction Methods 0.000 claims abstract description 52
- 239000003063 flame retardant Substances 0.000 claims abstract description 35
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 33
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 29
- 238000007731 hot pressing Methods 0.000 claims abstract description 19
- 239000000853 adhesive Substances 0.000 claims description 20
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- 239000000835 fiber Substances 0.000 claims description 20
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- 238000007789 sealing Methods 0.000 claims description 10
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Building Environments (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides embedded double-component sound-absorbing cotton and a preparation method thereof. The embedded double-component sound absorption cotton has the advantages that the embedded double-component cotton with two different components is subjected to embedded cross-linking, other attraction materials are mixed into the sound absorption cotton, the sound absorption and noise reduction effects of the sound absorption cotton are greatly improved, reinforcing ribs and supporting ribs are designed in the sound absorption cotton, the strength and the pressure resistance of the sound absorption cotton are favorably improved, the surface of the sound absorption cotton is coated with a flame-retardant fireproof material, fire caused by ignition of the sound absorption cotton is avoided, the sound absorption cotton can be simply disassembled and assembled from a bicycle lining by adopting magnetic connection and fixing through a sucking disc, the sound absorption cotton is replaced, all layers in the sound absorption cotton are tightly connected through multiple hot pressing, the occupied ratio of the sound absorption cotton is reduced, and the sound absorption effect and the working efficiency of the sound absorption cotton are favorably improved through simple and reasonable scientific design.
Description
Technical Field
The invention relates to the technical field of sound-absorbing cotton manufacturing, in particular to embedded double-component sound-absorbing cotton and a preparation method thereof.
Background
Noise pollution is a big public hazard of human living environment, which not only seriously damages the auditory nerve, cardiovascular system and nervous system of people, but also accelerates the aging of buildings and industrial machinery, and influences the precision and service life of instruments. With the increasing emphasis on noise control, various sound absorption and noise reduction methods are also brought forward. The traditional sound absorption material, glass wool, has many defects, such as low noise reduction coefficient, short service life, environmental pollution, and secondary pollution, and its application is limited, and it has been out of the market and replaced by new sound absorption material. The fiber sound-absorbing material can have a good sound-absorbing effect in a wide frequency band, so that the fiber sound-absorbing material can replace the traditional porous partition material represented by the centrifugal glass wool and the like, and the fiber sound-absorbing material which has the functions of environmental protection, reutilization, decoration and excellent acoustic performance can be more and more accepted by the market.
On the other hand, with the increasing requirements of life practicality and fire safety, people have higher and higher requirements on flame retardance of sound-absorbing cotton. At present, the flame retardant technology enters a new development stage, and the flame retardant technology of the sound-absorbing material is developing towards the direction of high efficiency, economy and environmental protection in the future. Since the inorganic flame retardant has: low toxicity and good thermal stability; does not precipitate and has lasting flame retardant effect; no corrosive gas is generated; the price is low; the inorganic flame retardant has the advantages of small smoke generation amount and the like, so the application of the inorganic flame retardant in various aspects is gradually replacing the organic flame retardant, and the research significance of synthesizing the inorganic flame retardant is great; however, since organic flame retardants are still being used in large amounts at present, the use of inorganic flame retardants in combination with organic flame retardants is a desirable transition.
At present, the social demand for sound-absorbing materials is rapidly increased, and the traditional sound-absorbing materials cannot meet the higher requirements of people on environmental protection, decoration and flame retardance; in addition, the tensile strength of the general sound-absorbing cotton is not good, and the sound-absorbing cotton is easy to break or form cracks during the stretching process, thereby influencing the use of the sound-absorbing cotton. Therefore, research and development of new environmentally friendly sound-absorbing flame retardant materials with high tensile strength have been the direction of effort.
Disclosure of Invention
In order to solve the technical problems, the invention provides the embedded double-component sound-absorbing cotton and the preparation method thereof, the embedded double-component sound-absorbing cotton is obtained by combining two kinds of double-component cotton with different compositions and other sound-absorbing materials and performing hot-pressing and molding for multiple times, and the sound-absorbing and noise-reducing effects are greatly improved.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
the embedded double-component sound-absorbing cotton comprises an organic double-component cotton layer and an inorganic double-component cotton layer, wherein the organic double-component cotton layer and the inorganic double-component cotton layer are embedded and alternately connected; net post supporting ribs and elastic reinforcing ribs which are symmetrically distributed in a cross-twisting mode are arranged between the organic bi-component cotton layer and the inorganic bi-component cotton layer, and a single-component porous cellular cotton layer and a straw fiber layer are alternately filled in an area formed between the net post supporting ribs and the elastic reinforcing ribs; the upper portions of the net post supporting ribs and the elastic reinforcing ribs are provided with an upper elastic supporting layer, the lower portions of the net post supporting ribs and the elastic reinforcing ribs are provided with a lower elastic supporting layer, the upper surface of the upper elastic supporting layer is coated with an adhesive connecting layer, and the adhesive connecting layer is connected with the upper elastic supporting layer on the lower portion and a surface decoration layer on the upper portion.
Preferably, the upper surface of the surface decoration layer is coated with a transparent fireproof flame-retardant layer, the lower surface of the lower elastic support layer is coated with a heat dissipation flame-retardant layer, and the outer surface of the heat dissipation flame-retardant layer is provided with a permanent magnet for magnetic connection and a fixed sucker for suction connection.
Preferably, the net post supporting ribs and the elastic reinforcing ribs are respectively provided with hemispherical connectors at the joints of the upper elastic supporting layer and the lower elastic supporting layer, the upper elastic supporting layer and the lower elastic supporting layer are provided with hemispherical connecting grooves corresponding to the hemispherical connectors, and the hemispherical connectors on the net post supporting ribs and the elastic reinforcing ribs are correspondingly connected and fixed with the hemispherical connecting grooves on the upper elastic supporting layer and the lower elastic supporting layer.
Preferably, the mass ratio of the organic bicomponent cotton layer to the inorganic bicomponent cotton layer is set to 1-3: 1-3.
Preferably, the mass ratio of the straw fiber layer to the single-component porous honeycomb cotton layer is set to be 1-5: 1-3.
The preparation method of the embedded double-component sound-absorbing cotton specifically comprises the following steps:
s1, assembling: forming hemispherical connecting grooves on the surfaces of the upper elastic supporting layer and the lower elastic supporting layer, which are obtained by casting through a die, correspondingly, and inserting hemispherical connectors of a plurality of net post supporting ribs and elastic reinforcing ribs, which are obtained by casting through the die, into the hemispherical connecting grooves to assemble to form the sound-absorbing cotton substrate;
s2, filling: respectively filling an organic bi-component cotton layer, a straw fiber layer, a single-component porous cellular cotton layer and an inorganic bi-component cotton layer into the areas among the net post supporting ribs, the elastic reinforcing ribs, the upper elastic supporting layer and the lower elastic supporting layer;
s3, hot pressing: repeatedly hot-pressing by a mould press at 80-150 deg.C until the organic bi-component cotton layer, the straw fiber layer, the single-component porous honeycomb cotton layer and the inorganic bi-component cotton layer are firmly fixed in the sound-absorbing cotton substrate, performing heat-sealing and edge-sealing treatment on the hot-pressed multiple layers, and continuously hot-pressing for 10-15min after edge sealing to prevent the multiple layers from deforming;
s4, gluing: coating an adhesive on the upper surface of the hot-pressed upper elastic supporting layer to form an adhesive connecting layer, then attaching the surface decorative layer to the adhesive connecting layer, and hot-pressing at 50-100 ℃ to make the surface decorative layer adhered to the upper elastic supporting layer, wherein during hot-pressing, vacuumizing is performed to ensure that no bubbles are generated in the adhesive connecting layer;
s5, coating: coating a transparent fireproof flame retardant on the upper surface of the surface decoration layer to form a transparent fireproof flame retardant layer, coating a heat-dissipation flame retardant on the lower surface cotton of the lower elastic supporting layer to form a heat-dissipation flame retardant layer, performing hot press molding at 50-100 ℃, and trimming, polishing and performing secondary edge sealing on the sound-absorbing cotton;
s6, secondary gluing: and coating adhesive on the back surfaces of the permanent magnet and the fixed sucker, and pressing and adhering the permanent magnet and the fixed sucker on the heat-dissipation flame-retardant layer to obtain the embedded double-component sound-absorbing cotton.
The invention has the beneficial effects that: the embedded double-component sound absorption cotton has the advantages that the embedded double-component cotton with two different components is subjected to embedded cross linking, other attraction materials are mixed into the sound absorption cotton, the sound absorption and noise reduction effects of the sound absorption cotton are greatly improved, reinforcing ribs and supporting ribs are designed in the sound absorption cotton, the strength and the pressure resistance of the sound absorption cotton are favorably improved, the surface of the sound absorption cotton is coated with a flame-retardant fireproof material, fire caused by ignition of the sound absorption cotton is avoided, the sound absorption cotton can be simply disassembled and assembled from a bicycle lining by adopting magnetic connection and fixing through a sucking disc, the sound absorption cotton is replaced, all layers in the sound absorption cotton are tightly connected through multiple hot pressing, the occupied ratio of the sound absorption cotton is reduced, the sound absorption effect and the working efficiency of the sound absorption cotton are favorably improved through simple and reasonable scientific design, and the market application prospect and value of the sound absorption cotton are greatly improved.
Drawings
Fig. 1 is a schematic cross-sectional view 1 of the embedded bi-component sound-absorbing cotton of the present invention.
Fig. 2 is a schematic cross-sectional view 2 of the embedded bi-component sound-absorbing cotton of the present invention.
In the figure: 1. a net post support rib; 2. elastic reinforcing ribs; 3. an organic bi-component cotton layer; 4. a straw fiber layer; 5. a single component porous honeycomb cotton layer; 6. an inorganic bicomponent cotton layer; 7. an upper resilient support layer; 8. a lower resilient support layer; 9. gluing a connecting layer; 10. a surface decorative layer; 11. a transparent fire resistant layer; 12. a heat-dissipating flame-retardant layer; 13. a hemispherical connector; 14. a permanent magnet; 15. and fixing the sucker.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, the embedded bi-component sound-absorbing cotton includes an organic bi-component cotton layer 3 and an inorganic bi-component cotton layer 6, wherein the organic bi-component cotton layer 3 and the inorganic bi-component cotton layer 6 are alternatively embedded; net column supporting ribs 1 and elastic reinforcing ribs 2 which are symmetrically distributed in a cross-twisting mode are arranged between the organic double-component cotton layer 3 and the inorganic double-component cotton layer 6, and a single-component porous honeycomb cotton layer 5 and a straw fiber layer 4 are alternately filled in an area formed between the net column supporting ribs 1 and the elastic reinforcing ribs 2; the upper portions of the net post supporting ribs 1 and the elastic reinforcing ribs 2 are provided with an upper elastic supporting layer 7, the lower portion of the net post supporting ribs is provided with a lower elastic supporting layer 8, the upper surface of the upper elastic supporting layer 7 is coated with an adhesive connecting layer 9, the adhesive connecting layer 9 is connected with the upper elastic supporting layer 7 on the lower portion and a surface decoration layer 10 on the upper portion, the upper surface of the surface decoration layer 10 is coated with a transparent fireproof flame-retardant layer 11, and the lower surface of the lower elastic supporting layer 8 is coated with a heat dissipation flame-retardant layer 12.
Referring to fig. 2, in the embedded dual-component sound-absorbing cotton, a permanent magnet 14 for magnetic connection and a fixed suction cup 15 for suction connection are disposed on an outer surface of a heat-dissipating flame-retardant layer 12, hemispherical connectors 13 are disposed at joints of a net post supporting rib 1 and an elastic reinforcing rib 2 with an upper elastic supporting layer 7 and a lower elastic supporting layer 8, respectively, hemispherical connection grooves corresponding to the hemispherical connectors 3 are formed in the upper elastic supporting layer 7 and the lower elastic supporting layer 8, and the hemispherical connectors 13 on the net post supporting rib 1 and the elastic reinforcing rib 2 are correspondingly connected and fixed with the hemispherical connection grooves on the upper elastic supporting layer 7 and the lower elastic supporting layer 8.
Further, the mass ratio of the organic bicomponent cotton layer 3 to the inorganic bicomponent cotton layer 6 was set to 1-3: 1-3.
Further, the mass ratio of the straw fiber layer 4 to the single-component porous honeycomb cotton layer 5 is set to be 1-5: 1-3.
The preparation method of the embedded double-component sound-absorbing cotton based on the embodiment comprises the following steps:
s1, assembling: forming hemispherical connecting grooves corresponding to the surfaces of the upper elastic supporting layer 7 and the lower elastic supporting layer 8, which are obtained by die casting, and inserting the hemispherical connectors 13 of the plurality of net post supporting ribs 1 and the elastic reinforcing ribs 2, which are obtained by die casting, into the hemispherical connecting grooves to assemble to form the sound-absorbing cotton substrate;
s2, filling: respectively filling an organic bi-component cotton layer 3, a straw fiber layer 4, a single-component porous cellular cotton layer 5 and an inorganic bi-component cotton layer 6 into the areas between the net post supporting ribs 1 and the elastic reinforcing ribs 2 and the upper elastic supporting layer 7 and the lower elastic supporting layer 8;
s3, hot pressing: repeatedly hot-pressing by a mould press at 100 ℃ until the organic bi-component cotton layer 3, the straw fiber layer 4, the single-component porous honeycomb cotton layer 5 and the inorganic bi-component cotton layer 6 are firmly arranged in the sound-absorbing cotton substrate, carrying out heat-sealing edge treatment on the hot-pressed multiple layers, and continuously hot-pressing for 15min after edge sealing to ensure that the multi-layer structure is not deformed;
s4, gluing: coating an adhesive on the upper surface of the hot-pressed upper elastic supporting layer 7 to form an adhesive connecting layer 9, then attaching the surface decoration layer 10 to the adhesive connecting layer 9, hot-pressing at 80 ℃ to enable the surface decoration layer 10 to be adhered to the upper elastic supporting layer 7, and vacuumizing during hot-pressing to ensure that no bubbles are generated in the adhesive connecting layer 9;
s5, coating: coating a transparent fireproof flame retardant on the upper surface of the surface decoration layer 10 to form a transparent fireproof flame retardant layer 11, coating a heat-dissipation flame retardant on the lower surface cotton of the lower elastic supporting layer 8 to form a heat-dissipation flame retardant layer 12, performing hot press molding at 80 ℃, and trimming, polishing and performing secondary edge sealing on the sound-absorbing cotton;
s6, secondary gluing: the back surfaces of the permanent magnet 14 and the fixed suction cup 15 are coated with an adhesive, and the permanent magnet 14 and the fixed suction cup 15 are fixed on the heat-dissipation flame-retardant layer 12 by pressing and gluing to obtain the embedded type bi-component sound-absorbing cotton.
Example 2
The present embodiment is different from embodiment 1 in that:
the net column supporting rib 1, the elastic reinforcing rib 2, the single-component porous honeycomb cotton layer 5 and the straw fiber layer 4 are twisted together to form double-component four-component sound-absorbing cotton, the combination of the four-component sound-absorbing cotton is embedded between the upper elastic supporting layer 7 and the lower elastic supporting layer 8, and the mass ratio of the net column supporting rib 1, the elastic reinforcing rib 2, the single-component porous honeycomb cotton layer 5 and the straw fiber layer 4 is 1:1: 1.
When the embedded double-component sound absorption cotton works, the embedded double-component sound absorption cotton can be connected and fixed on an automobile lining through the permanent magnet 14 and the fixed sucker 15 to play a role in sound absorption and noise reduction, noise emitted by an automobile enters the organic double-component cotton layer 3, the straw fiber layer 4, the single-component porous cellular cotton layer 5 and the inorganic double-component cotton layer 6 with the noise reduction effect through the lower elastic supporting layer 8, the noise is completely eliminated, and the noise cannot penetrate through the upper elastic supporting layer 7, so that the process of absorbing and reducing the noise of the automobile noise by the double-component sound absorption cotton is realized.
The embedded double-component sound absorption cotton has the advantages that the embedded double-component cotton with two different components is subjected to embedded cross linking, other attraction materials are mixed into the sound absorption cotton, the sound absorption and noise reduction effects of the sound absorption cotton are greatly improved, reinforcing ribs and supporting ribs are designed in the sound absorption cotton, the strength and the pressure resistance of the sound absorption cotton are favorably improved, the surface of the sound absorption cotton is coated with a flame-retardant fireproof material, fire caused by ignition of the sound absorption cotton is avoided, the sound absorption cotton can be simply disassembled and assembled from a bicycle lining by adopting magnetic connection and fixing through a sucking disc, the sound absorption cotton is replaced, all layers in the sound absorption cotton are tightly connected through multiple hot pressing, the occupied ratio of the sound absorption cotton is reduced, the sound absorption effect and the working efficiency of the sound absorption cotton are favorably improved through simple and reasonable scientific design, and the market application prospect and value of the sound absorption cotton are greatly improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The embedded bi-component sound-absorbing cotton is characterized by comprising a transparent fireproof flame-retardant layer (11), a surface decoration layer (10), an adhesive connecting layer (9), an upper elastic supporting layer (7), a lower elastic supporting layer (8) and a heat-dissipation flame-retardant layer (12) from top to bottom in sequence;
a net column supporting rib (1) and an elastic reinforcing rib (2) are arranged between the upper elastic supporting layer (7) and the lower elastic supporting layer (8), and an organic bi-component cotton layer (3), a straw fiber layer (4), a single-component porous cellular cotton layer (5) and an inorganic bi-component cotton layer (6) are filled in the area between the net column supporting rib (1) and the elastic reinforcing rib (2) and the area between the upper elastic supporting layer (7) and the lower elastic supporting layer (8);
the outer surface of the heat dissipation flame-retardant layer (12) is provided with a permanent magnet (14) for magnetic connection and a fixed sucker (15) for suction connection, the joints of the net post supporting ribs (1) and the elastic reinforcing ribs (2) with the upper elastic supporting layer (7) and the lower elastic supporting layer (8) are respectively provided with a hemispherical connector (13), and the upper elastic supporting layer (7) and the lower elastic supporting layer (8) are provided with hemispherical connecting grooves corresponding to the hemispherical connectors (13);
the preparation method of the embedded bi-component sound-absorbing cotton comprises the following steps:
s1, assembling: forming hemispherical connecting grooves corresponding to the surfaces of the upper elastic supporting layer (7) and the lower elastic supporting layer (8) which are obtained by die casting, and inserting hemispherical connectors (13) of a plurality of net post supporting ribs (1) and elastic reinforcing ribs (2) which are obtained by die casting into the hemispherical connecting grooves to assemble to form the sound-absorbing cotton substrate;
s2, filling: respectively filling an organic bi-component cotton layer (3), a straw fiber layer (4), a single-component porous honeycomb cotton layer (5) and an inorganic bi-component cotton layer (6) into areas between the net post supporting ribs (1) and the elastic reinforcing ribs (2) and the upper elastic supporting layer (7) and the lower elastic supporting layer (8);
s3, hot pressing: repeatedly hot-pressing by a mould press at the temperature of 80-150 ℃ until the organic bi-component cotton layer (3), the straw fiber layer (4), the single-component porous honeycomb cotton layer (5) and the inorganic bi-component cotton layer (6) are firmly arranged in the sound-absorbing cotton substrate, carrying out heat-sealing edge treatment on the hot-pressed layers, and continuously hot-pressing for 10-15min after edge sealing to ensure that the multi-layer structure is not deformed;
s4, gluing: coating an adhesive on the upper surface of the hot-pressed upper elastic supporting layer (7) to form an adhesive connecting layer (9), then attaching the surface decoration layer (10) to the adhesive connecting layer (9), hot-pressing at 50-100 ℃ to adhere the surface decoration layer (10) to the upper elastic supporting layer (7), and vacuumizing during hot-pressing to ensure that no bubbles are generated in the adhesive connecting layer (9);
s5, coating: coating a transparent fireproof flame retardant on the upper surface of the surface decoration layer (10) to form a transparent fireproof flame retardant layer (11), coating a heat-dissipation flame retardant on the lower surface cotton of the lower elastic supporting layer (8) to form a heat-dissipation flame retardant layer (12), performing hot press molding at 50-100 ℃, and trimming, polishing and performing secondary edge sealing on the sound-absorbing cotton;
s6, secondary gluing: and (3) coating adhesive on the back surfaces of the permanent magnet (14) and the fixed sucker (15), and pressing and adhering the permanent magnet (14) and the fixed sucker (15) on the heat dissipation flame-retardant layer (12) to obtain the embedded double-component sound absorption cotton.
2. The embedded bi-component sound-absorbing cotton and the preparation method thereof according to claim 1, wherein the organic bi-component cotton layer (3) and the inorganic bi-component cotton layer (6) are embedded, alternately and symmetrically distributed on two sides of the net post supporting ribs (1) and the elastic reinforcing ribs (2) which are symmetrically arranged in a cross-twisting manner.
3. The embedded double-component sound-absorbing cotton and the preparation method thereof according to claim 2, wherein the middle areas formed by the net post supporting ribs (1) and the elastic reinforcing ribs (2) in a cross, twisting and symmetrical mode are alternately filled with single-component porous honeycomb cotton layers (5) and straw fiber layers (4).
4. The embedded bi-component sound-absorbing cotton and the preparation method thereof according to claim 1, wherein the hemispherical connectors (13) on the net post supporting ribs (1) and the elastic reinforcing ribs (2) are correspondingly connected and fixed with the hemispherical connecting grooves on the upper elastic supporting layer (7) and the lower elastic supporting layer (8).
5. The embedded type bi-component sound-absorbing cotton and the preparation method thereof according to claim 1, wherein the mass ratio of the organic bi-component cotton layer (3) to the inorganic bi-component cotton layer (6) is set to 1-3: 1-3.
6. The embedded double-component sound-absorbing cotton and the preparation method thereof according to claim 1, wherein the mass ratio of the straw fiber layer (4) to the single-component porous honeycomb cotton layer (5) is set to 1-5: 1-3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111601042.7A CN114120949A (en) | 2021-12-24 | 2021-12-24 | Embedded bi-component sound-absorbing cotton and preparation method thereof |
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| CN202111601042.7A CN114120949A (en) | 2021-12-24 | 2021-12-24 | Embedded bi-component sound-absorbing cotton and preparation method thereof |
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| CN114120949A true CN114120949A (en) | 2022-03-01 |
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| CN202111601042.7A Pending CN114120949A (en) | 2021-12-24 | 2021-12-24 | Embedded bi-component sound-absorbing cotton and preparation method thereof |
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