CN108608686A - A kind of composite material and its manufacturing method for absorbing ultrasonic wave - Google Patents
A kind of composite material and its manufacturing method for absorbing ultrasonic wave Download PDFInfo
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- CN108608686A CN108608686A CN201810403656.6A CN201810403656A CN108608686A CN 108608686 A CN108608686 A CN 108608686A CN 201810403656 A CN201810403656 A CN 201810403656A CN 108608686 A CN108608686 A CN 108608686A
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- ultrasonic wave
- metal powder
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- fibrous material
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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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- 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 form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- 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 form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
-
- 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
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0221—Vinyl resin
- B32B2266/0228—Aromatic vinyl resin, e.g. styrenic (co)polymers
-
- 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
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0221—Vinyl resin
- B32B2266/0235—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
-
- 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
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/025—Polyolefin
-
- 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
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0278—Polyurethane
Abstract
The invention discloses a kind of composite materials for absorbing ultrasonic wave, it is combined by the irregular inorganic resonance object of via material and shape, via material is made of one or more kinds of fibrous material or foamed cotton, inorganic resonance object is made of at least one metal or metal oxide, inorganic resonance object is the graininess or sheet that grain size is less than 5 millimeters, either it is less than 5 millimeters of column or filiform for diameter, the total volume of inorganic resonance object is 5% the 40% of via material total volume.Using the composite material for absorbing ultrasonic wave of above technical scheme, by sound insulation, slicing effect and shielding electromagnetic waves are acted on, 80% or more can be reached to the absorption efficiency of ultrasonic wave or noise, 85% or more can also be reached to shielding electromagnetic waves efficiency.The invention also discloses the manufacturing methods of the composite material for absorbing ultrasonic wave.
Description
Technical field
The present invention relates to composite material, more particularly to a kind of composite material and its manufacturing methods for absorbing ultrasonic wave.
Background technology
Noise brings injury, especially ultrasonic wave because it has highly directive and penetration power to people’s lives, for a long time at this
People's internal organs of live and work can come to harm in the environment of sample.
Invention content
The object of the present invention is to provide a kind of composite material and its manufacturing methods for absorbing ultrasonic wave, to prevent noise
Or injury of the ultrasonic wave to human body.
According to an aspect of the invention, there is provided a kind of for absorbing the composite material of ultrasonic wave, by via material and
The irregular inorganic resonance object of shape is combined, and via material is by one or more kinds of fibrous material or foamed cotton group
At inorganic resonance object is made of at least one metal or metal oxide, and inorganic resonance object is the particle that grain size is less than 5 millimeters
Either sheet or column or filiform for diameter less than 5 millimeters, the total volume of inorganic resonance object are overall for via material for shape
Long-pending 5%-40%.
In some embodiments, fibrous material is natural plant fibre or organic synthetic fibers and asbestos fibre
Either any one in glass fibre or a variety of.
In some embodiments, inorganic resonance object is metal powder or wire, and its surface is irregular flat
Face or curved surface.
In some embodiments, inorganic resonance object is carried on the natural plant fibre for constituting via material, organic synthesis
Fiber, asbestos fibre either fiberglass surfacing or are uniformly mixed in the base-material of foamed cotton.
In some embodiments, load has the via material of inorganic resonance object to be coated on Surface of profile or be clipped in proximate matter
Inner Constitution interlayer structure.
In some embodiments, proximate matter is manufactured by via material and surface has multiple emulsus protrusion.
Using the composite material for absorbing ultrasonic wave of above technical scheme, by the way that via material and shape is irregular
Inorganic resonance object carry out it is compound, to have the following technical effects：
(1), when the irregular or regular emulsus convex surfaces of sound wave directive Surface of profile can produce different reflections or overflow
It penetrates and cancels out each other；
(2), when sound wave passes through via material, the wave energy of sound wave can be converted into thermal energy and generate slicing effect；
(3), when high frequency sound wave encounters the metal or metallic compound particle of irregular shape, it will produce resonance slicing
Effect, the wave amplitude of high frequency sound wave can be cut in；
(4), because, containing conductive metal powder or wire, thus also there is good screen to electromagnetic wave in via material
The effect of covering.
This is used to absorb the composite material of ultrasonic wave, acts on by sound insulation, slicing effect and to shielding electromagnetic waves, to super
The absorption efficiency of sound wave or noise can reach 80% or more, can also reach 85% or more to shielding electromagnetic waves efficiency.
It is a further object to provide a kind of manufacturing methods for absorbing the composite material of ultrasonic wave, including with
Lower step：
(1), fibrous material is placed in the environment containing metal powder, metal powder is enriched in the fiber of fibrous material
Surface；
(2), the enriching quantity for controlling metal powder, it is fibrous material total volume 5%-40% to make the total volume of metal powder,
The total volume and fibrous material total volume of metal powder are learnt by respective weight and density calculating；
(3), the fibrous material of metal powder is enriched with by the method for one of, is processed into product：
The fibrous material straight forming of metal powder will be enriched with into the shape of needs；
Alternatively, the fibrous material for being enriched with metal powder to be mixed in the shape for being molded into needs in expanded material；
Alternatively, the fibrous material for being enriched with metal powder is first processed slabbing, be then installed on again Surface of profile or
It is clipped in inside proximate matter；
Alternatively, the fibrous material for being enriched with metal powder is scattered in coating, it is then coated with to be formed in Surface of profile and inhales
Receive the coating of ultrasonic wave.
In some embodiments, metal powder is enriched in the fiber of fibrous material by vapor deposition or liquid deposition
Surface.
A further object of the present invention be to provide it is a kind of for absorb ultrasonic wave composite material manufacturing method, including with
Lower step：
(1), the graininess by grain size less than 5 millimeters either the metal powder of sheet or is less than 5 millimeters of column for diameter
Either Filamentous wire is uniformly mixed in polyethylene base-material, polystyrene base-material, polyvinyl chloride base-material or polyurethane to shape
In material；
(2) be blended with the polyethylene base-material of metal powder or wire, polystyrene base-material, polyvinyl chloride base-material or
Person's polyurethane base-material carries out the shape that foaming is processed into needs.
Description of the drawings
Fig. 1 is that the suction wave plank of one embodiment of the present invention obtains sectional view.
Fig. 2 is that the suction wave plank of another embodiment of the present invention obtains sectional view.
Specific implementation mode
The invention will now be described in further detail with reference to the accompanying drawings.
Embodiment 1
Fig. 1 schematically shows a kind of composite material system for absorbing ultrasonic wave of embodiment according to the present invention
At suction wave plank.As shown, the suction wave plank includes proximate matter 1 and the resonance slicing layer 2 that is clipped in inside proximate matter 1.
Wherein, proximate matter 1 is fabricated by via material.
1 surface of proximate matter has multiple emulsus protrusions 11.
Via material is generally made of one or more kinds of fibrous material or foamed cotton.
Fibrous material is natural plant fibre either appointing in organic synthetic fibers and asbestos fibre or glass fibre
Meaning is one or more kinds of.
Resonance slicing layer 2 is clipped in inside proximate matter 1, and the fibrous material by being enriched with metal powder is process.
Inorganic resonance object general appearance is irregular and is made of at least one metal or metal oxide.
The graininess that inorganic resonance object be grain size less than 5 millimeters either sheet or for diameter be less than 5 millimeters column or
Person is Filamentous.
The total volume of inorganic resonance object is the 5%-40% of via material total volume.
In the present embodiment, inorganic resonance object be metal powder or wire, and its surface be irregular plane or
Person's curved surface.
Inorganic resonance object be carried on constitute the natural plant fibre of via material, organic synthetic fibers, asbestos fibre or
Fiberglass surfacing.
The manufacturing method of composite material in the present embodiment for absorbing ultrasonic wave, includes the following steps：
(1), fibrous material is placed in the environment containing metal powder, will be enriched with by vapor deposition or liquid deposition
In the fiber surface of fibrous material；
(2), the enriching quantity for controlling metal powder, it is fibrous material total volume 5%-40% to make the total volume of metal powder,
The total volume and fibrous material total volume of metal powder are learnt by respective weight and density calculating；
(3), the resonance slicing layer 2 that the fibrous material for being enriched with metal powder is first processed to slabbing, is then clipped in type again
The interlayer structure of " sandwich " formula is formed inside 1 proximate matter of material.
In other examples, resonance slicing layer 2 can also be mounted on 1 surface of proximate matter.
In the embodiment of some other, the fibrous material for being enriched with metal powder can be with straight forming at needs
Shape.
Using the composite material for absorbing ultrasonic wave of above technical scheme, by the way that via material and shape is irregular
Inorganic resonance object carry out it is compound, to have the following technical effects：
(1), when the irregular or regular emulsus convex surfaces on 1 surface of sound wave directive proximate matter can produce different reflections or overflow
It penetrates and cancels out each other；
(2), when sound wave is by resonance slicing layer 2, the wave energy of sound wave can be converted into thermal energy and generate slicing effect；
(3), when high frequency sound wave encounters the metal or metallic compound grain for the irregular shape being distributed in resonance slicing layer 2
The period of the day from 11 p.m. to 1 a.m, will produce the effect of resonance slicing, and the wave amplitude of high frequency sound wave can be cut in；
(4), because, containing conductive metal powder or wire, thus also having to electromagnetic wave very well in resonance slicing layer 2
Shielding action.
This is used to absorb the composite material of ultrasonic wave, acts on by sound insulation, slicing effect and to shielding electromagnetic waves, to super
The absorption efficiency of sound wave or noise can reach 80% or more, can also reach 85% or more to shielding electromagnetic waves efficiency.
Embodiment 2
Fig. 2 schematically shows the composite material for absorbing ultrasonic wave of another embodiment according to the present invention
Manufactured suction wave plank.Difference from example 1 is that the fibrous material for being enriched with metal powder is first scattered in coating
In, it is then coated with forming the resonance slicing layer 2 of absorption ultrasonic wave in 1 surface of proximate matter.
Embodiment 3
A kind of manufacturing method for absorbing the composite material of ultrasonic wave includes the following steps：
(1), the graininess by grain size less than 5 millimeters either the metal powder of sheet or is less than 5 millimeters of column for diameter
Either Filamentous wire is uniformly mixed in polyethylene base-material, polystyrene base-material, polyvinyl chloride base-material or polyurethane to shape
In material；
(2) be blended with the polyethylene base-material of metal powder or wire, polystyrene base-material, polyvinyl chloride base-material or
Person's polyurethane base-material carries out the shape that foaming is processed into needs.
At this point, the hair formed after polyethylene base-material, polystyrene base-material, polyvinyl chloride base-material or the foaming of polyurethane base-material
Foam material constitutes via material described in embodiment 1.When sound wave passes through via material, the wave energy of sound wave can be converted into heat
Can and generate slicing effect；And when high frequency sound wave encounters the metal or metallic compound grain of the irregular shape in expanded material
The period of the day from 11 p.m. to 1 a.m, will produce the effect of resonance slicing, and the wave amplitude of high frequency sound wave can be cut in.
Certainly, in some other embodiment, the fibrous material for being enriched with metal powder can also be mixed in foaming
The shape of needs is molded into material.It is cut well it is possible thereby to be played simultaneously to ultrasonic wave using expanded material and fibrous material
Subtract effect.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to the protection model of the present invention
It encloses.
Claims (9)
1. a kind of for absorbing the composite material of ultrasonic wave, it is compound by the irregular inorganic resonance object of via material and shape and
At the via material is made of one or more kinds of fibrous material or foamed cotton, and the inorganic resonance object is by least one
Either the metal oxide composition inorganic resonance object is graininess or sheet of the grain size less than 5 millimeters, Huo Zhewei to kind metal
Diameter is less than 5 millimeters of column or filiform, and the total volume of the inorganic resonance object is the 5%-40% of via material total volume.
2. the composite material according to claim 1 for absorbing ultrasonic wave, which is characterized in that the fibrous material is day
Right plant fiber, organic synthetic fibers, asbestos fibre either any one in glass fibre or a variety of.
3. according to claim 1 for absorbing the composite material of ultrasonic wave, which is characterized in that the inorganic resonance object is
Either wire and its surface are irregular plane or curved surface to metal powder.
4. the composite material according to claim 2 for absorbing ultrasonic wave, which is characterized in that the inorganic resonance object is negative
Be loaded in the natural plant fibre, organic synthetic fibers, asbestos fibre for constituting the via material either fiberglass surfacing or
It is uniformly mixed in the base-material of the foamed cotton.
5. the composite material according to claim 4 for absorbing ultrasonic wave, which is characterized in that have described in load inorganic total
The via material of object of shaking is coated on Surface of profile or is clipped in proximate matter Inner Constitution interlayer structure.
6. the composite material according to claim 5 for absorbing ultrasonic wave, which is characterized in that the proximate matter is by described logical
Porous materials manufacture and surface has multiple emulsus protrusion.
7. a kind of manufacturing method for absorbing the composite material of ultrasonic wave includes the following steps：
(1), fibrous material is placed in the environment containing metal powder, to which metal powder to be enriched in the fiber of fibrous material
Surface；
(2), the enriching quantity for controlling the metal powder, it is the fibrous material total volume to make the total volume of the metal powder
5%-40%, the total volume of the metal powder and the fibrous material total volume are calculated by respective weight and density
Know；
(3), the fibrous material of the metal powder is enriched with by the method for one of, is processed into product：
The fibrous material straight forming of the metal powder will be enriched with into the shape of needs；
Alternatively, the fibrous material for being enriched with the metal powder to be mixed in the shape for being molded into needs in expanded material；
Alternatively, the fibrous material for being enriched with metal powder is first processed slabbing, be then installed on Surface of profile again or is clipped in
Inside proximate matter；
Alternatively, the fibrous material for being enriched with the metal powder is scattered in coating, it is then coated in Surface of profile shape
At the coating for absorbing ultrasonic wave.
8. the manufacturing method according to claim 7 for absorbing the composite material of ultrasonic wave, which is characterized in that the gold
Belong to the fiber surface that powder is enriched in the fibrous material by vapor deposition or liquid deposition.
9. a kind of manufacturing method for absorbing the composite material of ultrasonic wave includes the following steps：
(1), by grain size less than 5 millimeters graininess either the metal powder of sheet or for diameter less than 5 millimeters column or
The wire of person's filiform is uniformly mixed in polyethylene base-material, polystyrene base-material, polyvinyl chloride base-material or polyurethane base-material；
(2) be blended with the polyethylene base-material of the metal powder or wire, polystyrene base-material, polyvinyl chloride base-material or
Person's polyurethane base-material carries out the shape that foaming is processed into needs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810403656.6A CN108608686A (en) | 2018-04-28 | 2018-04-28 | A kind of composite material and its manufacturing method for absorbing ultrasonic wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810403656.6A CN108608686A (en) | 2018-04-28 | 2018-04-28 | A kind of composite material and its manufacturing method for absorbing ultrasonic wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108608686A true CN108608686A (en) | 2018-10-02 |
Family
ID=63661461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810403656.6A Pending CN108608686A (en) | 2018-04-28 | 2018-04-28 | A kind of composite material and its manufacturing method for absorbing ultrasonic wave |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109486172A (en) * | 2018-11-13 | 2019-03-19 | 中山市益孚生物科技有限公司 | A kind of RF shielding material and its manufacturing method |
| CN112409808A (en) * | 2020-11-13 | 2021-02-26 | 中南林业科技大学 | Metalized wooden wave-absorbing plate and preparation method thereof |
| CN112746707A (en) * | 2020-12-25 | 2021-05-04 | 江苏昇昌家居新材料股份有限公司 | Scratch-resistant sound-insulation leather wallboard |
| CN114182434A (en) * | 2021-11-26 | 2022-03-15 | 广州中樱汽车零部件有限公司 | High-performance acoustic cotton for vehicles and manufacturing process thereof |
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| CN1466124A (en) * | 2002-06-27 | 2004-01-07 | 志 江 | Sound-insulation and sound-absorbing material |
| CN1639241A (en) * | 2002-02-22 | 2005-07-13 | 陶氏环球技术公司 | Thermoplastic foam containing particulate additive |
| CN203144665U (en) * | 2011-04-23 | 2013-08-21 | 何玉忠 | Aluminum fiber elastic cotton |
| CN107696596A (en) * | 2016-11-10 | 2018-02-16 | 上海坤旸源电力配套设备有限公司 | A kind of efficiently noise reduction sheet material |
-
2018
- 2018-04-28 CN CN201810403656.6A patent/CN108608686A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1639241A (en) * | 2002-02-22 | 2005-07-13 | 陶氏环球技术公司 | Thermoplastic foam containing particulate additive |
| CN1466124A (en) * | 2002-06-27 | 2004-01-07 | 志 江 | Sound-insulation and sound-absorbing material |
| CN203144665U (en) * | 2011-04-23 | 2013-08-21 | 何玉忠 | Aluminum fiber elastic cotton |
| CN107696596A (en) * | 2016-11-10 | 2018-02-16 | 上海坤旸源电力配套设备有限公司 | A kind of efficiently noise reduction sheet material |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109486172A (en) * | 2018-11-13 | 2019-03-19 | 中山市益孚生物科技有限公司 | A kind of RF shielding material and its manufacturing method |
| CN112409808A (en) * | 2020-11-13 | 2021-02-26 | 中南林业科技大学 | Metalized wooden wave-absorbing plate and preparation method thereof |
| CN112746707A (en) * | 2020-12-25 | 2021-05-04 | 江苏昇昌家居新材料股份有限公司 | Scratch-resistant sound-insulation leather wallboard |
| CN112746707B (en) * | 2020-12-25 | 2021-10-01 | 江苏昇昌家居新材料股份有限公司 | Scratch-resistant sound-insulation leather wallboard |
| CN114182434A (en) * | 2021-11-26 | 2022-03-15 | 广州中樱汽车零部件有限公司 | High-performance acoustic cotton for vehicles and manufacturing process thereof |
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