CN105856704A - Sound-absorbing insulation cotton and preparation method thereof and preparation method of sound-absorbing insulation mat - Google Patents

Sound-absorbing insulation cotton and preparation method thereof and preparation method of sound-absorbing insulation mat Download PDF

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Publication number
CN105856704A
CN105856704A CN201610208902.3A CN201610208902A CN105856704A CN 105856704 A CN105856704 A CN 105856704A CN 201610208902 A CN201610208902 A CN 201610208902A CN 105856704 A CN105856704 A CN 105856704A
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sound
pet
absorbing
fiber
intermediate layer
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CN105856704B (en
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蓝国勇
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Guangxi Defute Technology Co Ltd
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Guangxi Defute Technology Co Ltd
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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
    • B32B5/08—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 the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • 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
    • B32B5/26—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 another layer next to it also being fibrous or filamentary
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • 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
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

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  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to sound-absorbing insulation cotton and a preparation method thereof and a preparation method of a sound-absorbing insulation mat. The sound-absorbing insulation cotton comprises a top layer, a bottom layer and a plurality of middle layers, wherein the top layer, the plurality of middle layers and the bottom layer are sequentially stacked from top to bottom; the top layer and the bottom layer are PP grid cloth; and the plurality of middle layers are prepared by mixing PP fibers and PET fibers. Compared with the prior art, the sound-absorbing insulation cotton has the advantages of being light in mass, high in sound insulation and sound absorption capabilities, high in decorative property and convenient to construct.

Description

A kind of sound-absorbing Sound-proof material and preparation method thereof, sound-absorbing sound insulating pad preparation method
Technical field
The present invention relates to technical field of sound isolation, particularly to a kind of sound-absorbing Sound-proof material and preparation method thereof, inhale Sound sound insulating pad preparation method.
Background technology
Along with the improving constantly of the consumption consciousness of people, client is to car load sound-absorbing sound insulation, lightweight, comfortable The requirement of the aspects such as degree is more and more higher, and the requirement to car interior material is the most tightened up.And automotive trim is easypro Appropriateness is also embodied in the functional characteristics such as damping, sound-absorbing.Technology typically utilizes some particular design now Sound absorption deadener is assemblied in some privileged sites of vehicle and realizes sound-absorbing during running car, damping Effect, ensures that passenger inside the vehicle's is the most comfortable；Special construction (ratio due to double-component sound absorption cotton material As fluffy in inside have a large amount of gap, and gap distribution is the most uniform), and light weight own, environmental protection, suction The features such as sound excellent noise reduction effect, have been widely applied on automotive upholstery.
At present the main PU concentrating on single component is studied for automobile-used sound-absorbing, acoustic dampening composite Foaming kind, glass fibre, cotton fiber, polyester fiber etc., sound-absorbing soundproof effect is poor.
Chinese patent application CN 104339782 A discloses a kind of automobile-used sound-absorbing insulation material and preparation side Method, the vehicle sound insulation pad of preparation, this composite sound insulating pad is by glass fibre, PP fiber, PET Three carries out mixed-forming and obtains a kind of automobile-used sound-absorbing insulation material；But this material complex manufacturing technology, becomes This is higher.
Chinese patent application CN 202115031 U disclose a kind of gradient sound insulation, sound absorption qualities automobile-used Composite.This patent is sent out by upper fire-retardant cover layer, high frequency sound absorbing layer, low-frequency sound-absorbing layer, low-density Bubble rubber layer and under fire-retardant cover layer five-layer structure low frequency and high frequency noise are played absorption, attenuation, Good sound insulation and effect of heat insulation are provided.
Summary of the invention
The present invention passes through PP fiber and the gradient design of PET double-component, and technology to be solved is asked Topic is to provide one and has light weight, and sound insulating and absorbing performance is strong, can be ornamental strong, the sound-absorbing of easy construction every Sound cotton and preparation method thereof, sound-absorbing sound insulating pad preparation method.
The technical scheme is that a kind of sound-absorbing Sound-proof material, including top layer, Bottom and multiple intermediate layer, described top layer, multiple intermediate layer and bottom from top to bottom stack gradually, described Top layer and bottom are PP grid cloth, and multiple described intermediate layers are mixed system by PP fiber with PET Become.
The invention has the beneficial effects as follows: top layer, bottom and multiple intermediate layer composition many levels structure, carry Rising sound-absorbing soundproof effect, the material of PP grid cloth, PP fiber and PET is made, solid netted company Continuous loose structure makes this device light weight, can be ornamental strong, easy construction.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described intermediate layer is provided with three, three described intermediate layers be respectively the first intermediate layer, Second intermediate layer and the 3rd intermediate layer, described first intermediate layer and the PP fiber in described 3rd intermediate layer Consistent with the ratio of PET.
Above-mentioned further scheme is used to provide the benefit that: in the first intermediate layer and described 3rd intermediate layer PP fiber is consistent with the ratio of PET, improves the convenience of processing, simultaneously the first intermediate layer, Two intermediate layers become gradient with the PP fiber in the 3rd intermediate layer with the ratio of PET, improve this sound-absorbing Cotton sound insulating and absorbing effect.
Further, the PP fiber in described first intermediate layer is 1:1 with the ratio of PET；Described PP fiber in two intermediate layers is 2:1 with the ratio of PET；PP in described 3rd intermediate layer is fine Dimension is 1:1 with the ratio of PET.
Above-mentioned further scheme is used to provide the benefit that: in the first intermediate layer, the second intermediate layer and the 3rd The PP fiber of interbed becomes gradient with the ratio of PET, improves the sound insulating and absorbing effect of this acoustical cotton.
Further, the thickness of described top layer and bottom is 0.5～1mm, the thickness in each described intermediate layer Degree is 1～4mm.
Above-mentioned further scheme is used to provide the benefit that: to make this acoustical cotton light, can be ornamental strong, Easy construction.
Further, quality is total quality 55%～the 65% of described PP fiber；Described PET Quality is the 35%～45% of total quality.
Above-mentioned further scheme is used to provide the benefit that: to make this acoustical cotton light quality, can be ornamental By force, easy construction.
Further, the density of described top layer and bottom PP grid cloth is 50～200g/m2。
Above-mentioned further scheme is used to provide the benefit that: the diameter of PP grid cloth is little, fiber count in unit Many, micropore and gap that internal mutual connects are many, and hole is little, improve the sound insulating and absorbing of this acoustical cotton Effect.
Further, a diameter of 2～6 μm of described PP fiber, a diameter of 2～6 μm of described PET.
Above-mentioned further scheme is used to provide the benefit that: the diameter of PP fiber and PET is little, unit Interior fiber count is many, and micropore and gap that internal mutual connects are many, and hole is little, improves this acoustical cotton Sound insulating and absorbing effect.
Another technical scheme that the present invention solves above-mentioned technical problem is as follows: the preparation of a kind of sound-absorbing Sound-proof material Method, comprises the steps:
Step S1. is by PP grid cloth tiling rolling, and is divided into PP grid cloth and the PP at top of bottom Grid cloth；
PP and PET is put in melt blowing machine by step S2. in mass ratio, carries out heating and filtering, by setting Meter ratio exports the first compound and the second compound, and the ratio of the first compound PP Yu PET is 1:1, The ratio of the second compound PP Yu PET is 2:1；
The PP grid cloth of bottom is sent in lapper by step S3., by the first compound at lapper even The continuous PP grid cloth to bottom carries out spray webbing to setting thickness, changes the second compound and carries out spray webbing, reaches To setting thickness, then change the first compound and carry out spray webbing, form the netted of PP fiber and PET Structure, covers the PP grid cloth at top in the network structure of PP fiber and PET, through grinding Press and i.e. obtain sound-absorbing Sound-proof material.
The invention has the beneficial effects as follows: the material of PP fiber and PET is made, easy to process, promote Production efficiency so that this device light weight, sound insulating and absorbing performance is strong, can be ornamental strong, easy construction.
Another technical scheme that the present invention solves above-mentioned technical problem is as follows: the preparation of a kind of sound-absorbing sound insulating pad Method, comprises the steps: to include sound-absorbing Sound-proof material, by sound-absorbing Sound-proof material by lip temperature being Suppress molding in 75～90 seconds under the hot moulding of 200～280 DEG C, i.e. obtain required form sound-absorbing sound insulating pad.
The invention has the beneficial effects as follows: easy to process, improve production efficiency so that this device light weight, Sound insulating and absorbing performance is strong, can be ornamental strong, easy construction.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention a kind of sound-absorbing Sound-proof material.
In accompanying drawing, the list of parts representated by each label is as follows:
1, top layer, 2, bottom；
3, intermediate layer, the 31, first intermediate layer, the 32, second intermediate layer, the 33, the 3rd intermediate layer.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, example is served only for explaining this Invention, is not intended to limit the scope of the present invention.
Embodiment 1:
As it is shown in figure 1, a kind of sound-absorbing Sound-proof material, including top layer 1, bottom 2 and multiple intermediate layer 3, Described top layer 1, multiple intermediate layer 3 and bottom 2 from top to bottom stack gradually, described top layer 1 and bottom 2 are PP grid cloth, and multiple described intermediate layers 3 are mixed with PET by PP fiber.
Preferably, described intermediate layer 3 is provided with three, and three described intermediate layers 3 are respectively in the middle of first Layer the 31, second intermediate layer 32 and the 3rd intermediate layer 33, in described first intermediate layer 31 and the described 3rd PP fiber in interbed 33 is consistent with the ratio of PET.
Preferably, the PP fiber in described first intermediate layer 31 is 1:1 with the ratio of PET；Institute The ratio stating the PP fiber in the second intermediate layer 32 and PET is 2:1；Described 3rd intermediate layer 33 In the ratio of PP fiber and PET be 1:1.
Preferably, the thickness of described top layer 1 and bottom 2 is 0.5～1mm, top layer 1 and bottom 2 Thickness can be all 0.5mm, 0.7mm or 1mm.
The thickness in each described intermediate layer 3 is 1～4mm, and the thickness in each described intermediate layer 3 is equal For 1mm, 2mm or 4mm.
Preferably, quality is total quality 55%～the 65% of described PP fiber, the quality of PP fiber is The 55%, 60% or 65% of total quality；
The quality of described PET is the 35%～45% of total quality, and the quality of PET is overall matter 35%, 40% or the 45% of amount；
Preferably, the density of described top layer and bottom PP grid cloth is 50～200g/m2, top layer and bottom The density of PP grid cloth is 50g/m2、125g/m2Or 200g/m2。
Preferably, a diameter of 2～6 μm of described PP fiber, a diameter of 2 μm of described PP fiber, 4 μm Or 6 μm, a diameter of 2～6 μm of described PET, a diameter of 2 μm of described PET, 4 μm Or 6 μm.
Embodiment 2:
The preparation method of a kind of sound-absorbing Sound-proof material, comprises the steps:
Step S1. is by PP grid cloth tiling rolling, and is divided into PP grid cloth and the PP at top of bottom Grid cloth；
PP and PET is put in melt blowing machine by step S2. in mass ratio, carries out heating and filtering, by setting Meter ratio exports the first compound and the second compound, and the ratio of the first compound PP Yu PET is 1:1, The ratio of the second compound PP Yu PET is 2:1；
The PP grid cloth of bottom is sent in lapper by step S3., by the first compound at lapper even The continuous PP grid cloth to bottom carries out spray webbing to setting thickness, changes the second compound and carries out spray webbing, reaches To setting thickness, then change the first compound and carry out spray webbing, form the netted of PP fiber and PET Structure, covers the PP grid cloth at top in the network structure of PP fiber and PET, through grinding Press and i.e. obtain sound-absorbing Sound-proof material.
Embodiment 3:
The preparation method of a kind of sound-absorbing sound insulating pad, comprises the steps: to include sound-absorbing Sound-proof material, will inhale Sound Sound-proof material is placed under the hot-die that lip temperature is 200～280 DEG C compacting molding in 75～90 seconds, to obtain final product To required form sound-absorbing sound insulating pad.
This device belongs to fibrous porous sound-absorbing material, and it has solid netted continuous poriferous structure, compares In common acoustical cotton, the acoustical cotton fibre diameter of this device is less, and in unit, fiber count is more, its material Micropore and gap that internal mutual connects are more, and these holes are less；And tied by the gradient used Structure makes material have a light weight, excellent gradient sound insulating and absorbing performance, can be ornamental strong, easy construction；Solve Having determined heavier mass in current automobile-used sound-absorbing deadener, sound-absorbing effect is poor, without the feature of damping.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all in the present invention Spirit and principle within, any modification, equivalent substitution and improvement etc. made, should be included in this Within bright protection domain.

Claims (9)

1. a sound-absorbing Sound-proof material, it is characterised in that: include top layer (1), bottom (2) and Multiple intermediate layers (3), described top layer (1), multiple intermediate layer (3) and bottom (2) are by upper Stacking gradually under to, described top layer (1) and bottom (2) are PP grid cloth, Duo Gesuo State intermediate layer (3) to be mixed with PET by PP fiber.
A kind of sound-absorbing Sound-proof material, it is characterised in that: in described Interbed (3) is provided with three, three described intermediate layers (3) be respectively the first intermediate layer (31), Second intermediate layer (32) and the 3rd intermediate layer (33), described first intermediate layer (31) and institute State the PP fiber in the 3rd intermediate layer (33) consistent with the ratio of PET.
A kind of sound-absorbing Sound-proof material, it is characterised in that: described the PP fiber in one intermediate layer (31) is 1:1 with the ratio of PET；In described second PP fiber in interbed (32) is 2:1 with the ratio of PET；Described 3rd intermediate layer (33) the PP fiber in is 1:1 with the ratio of PET.
A kind of sound-absorbing Sound-proof material, it is characterised in that: described top The thickness of layer (1) and bottom (2) is 0.5～1mm, each described intermediate layer (3) Thickness be 1～4mm.
A kind of sound-absorbing Sound-proof material, it is characterised in that: described PP The quality of fiber is the 55%～65% of total quality；The quality of described PET is overall matter The 35%～45% of amount.
A kind of sound-absorbing Sound-proof material, it is characterised in that: described top The density of layer and bottom PP grid cloth is 50～200g/m2。
A kind of sound-absorbing Sound-proof material, it is characterised in that: described PP A diameter of 2～6 μm of fiber, a diameter of 2～6 μm of described PET.
8. a preparation method for the sound-absorbing Sound-proof material described in any one of claim 1 to 7, It is characterized in that, comprise the steps:
Step S1. is by PP grid cloth tiling rolling, and is divided into PP grid cloth and the top of bottom The PP grid cloth in portion；
PP and PET is put in melt blowing machine by step S2. in mass ratio, carries out heating and filtering, The first compound and the second compound is exported by design proportion, the first compound PP's Yu PET Ratio is 1:1, and the ratio of the second compound PP Yu PET is 2:1；
The PP grid cloth of bottom is sent in lapper by step S3., is being become by the first compound Net machine PP grid cloth to bottom continuously carries out spray webbing to setting thickness, changes the second compound Carry out spray webbing, reach to set thickness, then change the first compound and carry out spray webbing, form PP fine The network structure of peacekeeping PET, covers the PP grid cloth at top at PP fiber and PET In the network structure of fiber, i.e. obtain sound-absorbing Sound-proof material through rolling.
9. the preparation method of a sound-absorbing sound insulating pad, it is characterised in that: claim will be included The sound-absorbing Sound-proof material of 8 preparations, it is 200～280 DEG C that sound-absorbing Sound-proof material is placed on lip temperature Suppress molding in 75～90 seconds under hot-die, i.e. obtain required form sound-absorbing sound insulating pad.
CN201610208902.3A 2016-04-06 2016-04-06 A kind of sound-absorbing sound-proof material and preparation method thereof, sound-absorbing sound insulating pad preparation method Active CN105856704B (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107314524A (en) * 2017-07-26 2017-11-03 广东美的制冷设备有限公司 Sound-proof material and preparation method thereof, sound-insulating member and air-conditioning
CN107379665A (en) * 2017-08-01 2017-11-24 湖北天运消音防振新材料有限公司 A kind of two-component acoustical cotton for possessing superpower sound-absorbing effect
CN107379653A (en) * 2017-08-01 2017-11-24 湖北天运消音防振新材料有限公司 A kind of two-component acoustical cotton
CN107399283A (en) * 2017-08-01 2017-11-28 湖北天运消音防振新材料有限公司 A kind of sound-absorbing cotton
CN107415360A (en) * 2017-08-01 2017-12-01 湖北天运消音防振新材料有限公司 A kind of new passage back veneer acoustical cotton
CN107512030A (en) * 2017-08-01 2017-12-26 湖北天运消音防振新材料有限公司 A kind of preparation method for the two-component acoustical cotton for possessing superpower sound-absorbing effect
CN108437588A (en) * 2018-01-30 2018-08-24 武汉理工大学 A kind of honeycomb interlayer absorbing sound and lowering noise structure and preparation method thereof of filling porous fibre
CN109291538A (en) * 2017-07-24 2019-02-01 宜兴市泰宇汽车零部件有限公司 A kind of combined type two-component acoustical cotton
CN109762304A (en) * 2019-01-17 2019-05-17 湖北天运消音防振新材料有限公司 A kind of sound-absorbing for automobile interiors, heat insulation foam and preparation method thereof
CN110608528A (en) * 2018-06-15 2019-12-24 南京中远高分子材料科技有限公司 Heat-resistant air conditioner soundproof cotton
CN110774692A (en) * 2018-07-25 2020-02-11 株式会社瑞延理化 Light sound-absorbing material and base material attached thereto

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CN202702758U (en) * 2012-07-24 2013-01-30 山东俊富无纺布有限公司 Sound-absorption composite warm keeping non-woven fabrics
CN103373021A (en) * 2012-04-27 2013-10-30 上海杰事杰新材料(集团)股份有限公司 Sound isolation and noise reduction light-weight fiber composite plate for vehicle and preparation method thereof
CN104441876A (en) * 2013-09-25 2015-03-25 东丽纤维研究所（中国）有限公司 Composite layered sound absorption material for automobiles

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Publication number Priority date Publication date Assignee Title
CN201800647U (en) * 2010-07-22 2011-04-20 浙江吉利汽车研究院有限公司 Automobile front sound insulation pad
CN202115031U (en) * 2011-06-16 2012-01-18 江苏环宇汽车零部件有限公司 Vehicle-use composite material with gradient sound insulation and absorption performance
CN103373021A (en) * 2012-04-27 2013-10-30 上海杰事杰新材料(集团)股份有限公司 Sound isolation and noise reduction light-weight fiber composite plate for vehicle and preparation method thereof
CN202702758U (en) * 2012-07-24 2013-01-30 山东俊富无纺布有限公司 Sound-absorption composite warm keeping non-woven fabrics
CN104441876A (en) * 2013-09-25 2015-03-25 东丽纤维研究所（中国）有限公司 Composite layered sound absorption material for automobiles

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109291538A (en) * 2017-07-24 2019-02-01 宜兴市泰宇汽车零部件有限公司 A kind of combined type two-component acoustical cotton
CN107314524A (en) * 2017-07-26 2017-11-03 广东美的制冷设备有限公司 Sound-proof material and preparation method thereof, sound-insulating member and air-conditioning
CN107379665A (en) * 2017-08-01 2017-11-24 湖北天运消音防振新材料有限公司 A kind of two-component acoustical cotton for possessing superpower sound-absorbing effect
CN107379653A (en) * 2017-08-01 2017-11-24 湖北天运消音防振新材料有限公司 A kind of two-component acoustical cotton
CN107399283A (en) * 2017-08-01 2017-11-28 湖北天运消音防振新材料有限公司 A kind of sound-absorbing cotton
CN107415360A (en) * 2017-08-01 2017-12-01 湖北天运消音防振新材料有限公司 A kind of new passage back veneer acoustical cotton
CN107512030A (en) * 2017-08-01 2017-12-26 湖北天运消音防振新材料有限公司 A kind of preparation method for the two-component acoustical cotton for possessing superpower sound-absorbing effect
CN107512030B (en) * 2017-08-01 2020-02-04 广德天运新技术股份有限公司 Preparation method of double-component sound-absorbing cotton with super-strong sound-absorbing effect
CN108437588A (en) * 2018-01-30 2018-08-24 武汉理工大学 A kind of honeycomb interlayer absorbing sound and lowering noise structure and preparation method thereof of filling porous fibre
CN110608528A (en) * 2018-06-15 2019-12-24 南京中远高分子材料科技有限公司 Heat-resistant air conditioner soundproof cotton
CN110774692A (en) * 2018-07-25 2020-02-11 株式会社瑞延理化 Light sound-absorbing material and base material attached thereto
CN109762304A (en) * 2019-01-17 2019-05-17 湖北天运消音防振新材料有限公司 A kind of sound-absorbing for automobile interiors, heat insulation foam and preparation method thereof

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