CN104562702A - Porous alumina-polyurethane composite emulsion-coated polypropylene-based non-woven sound-absorbing material for automotive interiors - Google Patents
Porous alumina-polyurethane composite emulsion-coated polypropylene-based non-woven sound-absorbing material for automotive interiors Download PDFInfo
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- CN104562702A CN104562702A CN201510002714.0A CN201510002714A CN104562702A CN 104562702 A CN104562702 A CN 104562702A CN 201510002714 A CN201510002714 A CN 201510002714A CN 104562702 A CN104562702 A CN 104562702A
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- 239000000839 emulsion Substances 0.000 title claims abstract description 34
- 239000011358 absorbing material Substances 0.000 title claims abstract description 22
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 22
- 239000004814 polyurethane Substances 0.000 title claims abstract description 22
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 15
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 15
- -1 polypropylene Polymers 0.000 title claims abstract description 9
- 239000002131 composite material Substances 0.000 title claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 36
- 235000010469 Glycine max Nutrition 0.000 claims abstract description 7
- 244000068988 Glycine max Species 0.000 claims abstract description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 5
- GHKOFFNLGXMVNJ-UHFFFAOYSA-N Didodecyl thiobispropanoate Chemical compound CCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCC GHKOFFNLGXMVNJ-UHFFFAOYSA-N 0.000 claims abstract description 4
- XQBCVRSTVUHIGH-UHFFFAOYSA-L [dodecanoyloxy(dioctyl)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCCCCCC)(CCCCCCCC)OC(=O)CCCCCCCCCCC XQBCVRSTVUHIGH-UHFFFAOYSA-L 0.000 claims abstract description 4
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 4
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 4
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 18
- 239000012752 auxiliary agent Substances 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 10
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 6
- 239000003595 mist Substances 0.000 claims description 6
- 229910000480 nickel oxide Inorganic materials 0.000 claims description 6
- 229910000077 silane Inorganic materials 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 229910002012 Aerosil® Inorganic materials 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 235000006708 antioxidants Nutrition 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000013016 damping Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 239000006087 Silane Coupling Agent Substances 0.000 abstract 1
- 239000002041 carbon nanotube Substances 0.000 abstract 1
- 229910021393 carbon nanotube Inorganic materials 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 abstract 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000000527 sonication Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention relates to a non-woven sound-absorbing material, and specifically relates to a porous alumina-polyurethane composite emulsion-coated polypropylene-based non-woven sound-absorbing material for automotive interiors. The material is prepared from the following raw materials in parts by weight: 0.01-0.02 part of carbon nano-tubes, 6-10 parts of soybean fibres, 22-26 parts of polypropylene, 1-2 parts of porous alumina with 325-400 meshes, 2-3 parts of silane coupling agent, 0.5-0.8 part of sodium hexametaphosphate, 0.1-0.2 part of antioxidant 1076, 0.1-0.2 part of antioxidant DLTP, 0.2-0.3 part of bis(lauroyloxy)dioctyltin, 12-16 parts of polymethyl methacrylate, 18-22 parts of volcanic ash micro-powder, 12-14 parts of waterborne polyurethane emulsion with a solid content of 8-10% and 1-2% of auxiliaries. The material disclosed by the invention adheres to the advantages of the traditional polypropylene non-woven material; the mechanical property is improved, the surface wettability is improved, the tensile property is good, the cellosilk strength is improved, the acoustic oscillation damping is accelerated, and the noise reduction effect is obvious. The material is light in mass, environmentally friendly, resistant to heat and fire, and stable in shape, as well as is a novel practical automotive sound-absorbing material.
Description
Technical field
The present invention relates to a kind of non-woven sound-absorbing material, be specifically related to a kind of automotive trim Woelm Alumina-non-woven sound-absorbing material of the coated polypropylene-base of polyurethane complex emulsions.
Background technology
Automobile start with car in driving process in can produce various dynamic noise, these noises directly concern comfort level and the hearing health of rider, excessive noise even can disturb driver attention, affect safe driving, therefore effectively reduce the noise in compartment, build quiet, healthy driving and take environment and seem particularly important.And noise in car will be reduced depend primarily on the design of car body itself, material and interior trim sound-absorbing material, be also comparatively efficient a kind of noise reduction means while that the sound insulation and noise reduction material wherein designing high-quality being the most common.
The polypropylene-base composite nonwoven material obtained with meltblown is with its ultra-fine fibre structure, produce simple efficient, the feature such as nontoxic becomes the sound-absorbing material of class extensive use in automotive trim, the most short texture of these materials, smooth fibrous outer reduces the specific area of material, thus sound wave oscillatory extinction transformation time is in the material shortened, do not reach gratifying sound-absorbing effect, noise reduction is promoted often through increase material thickness when reality uses, finished product exists yielding simultaneously, anti-resilience is poor, easy generation electrostatic, the shortcomings such as poor heat resistance.
Summary of the invention
The object of the invention is to, for the deficiency of current material, provide a kind of novel non-woven sound-absorbing material of the coated polypropylene-base of polyurethane complex emulsions, this material has larger specific area, in structure, comparatively traditional non-woven materials is more tight, and noise reduction is obvious; To achieve these goals, the technical solution used in the present invention is as follows:
A kind of automotive trim Woelm Alumina-non-woven sound-absorbing material of the coated polypropylene-base of polyurethane complex emulsions, it is characterized in that: described sound-absorbing material is made up of the raw material of following weight portion: CNT 0.01-0.02, fibre and soya 6-10, polypropylene 22-26, 325-400 order Woelm Alumina 1-2, silane coupler 2-3, calgon 0.5-0.8, antioxidant 1076 0.1-0.2, anti-oxidant DLTP 0.1-0.2, Bis(lauroyloxy)dioctyltin 0.2-0.3, polymethyl methacrylate 12-16, volcanic ash micro mist 18-22, solid content is the aqueous polyurethane emulsion 12-14 of 8-10%, auxiliary agent 1-2,
Described auxiliary agent is made up of the raw material of following weight portion: 400-500 order fine hair powder 1-2, lauryl sodium sulfate 0.5-0.6, propylene glycol 3-5, solid content are aerosil colloidal sol 4-5, nano-nickel oxide 0.6-0.8, the water 10-12 of 15-20%, preparation method is: first drop in water by propylene glycol, lauryl sodium sulfate, be stirred to after material dissolves dispersion completely, add other leftover materials again, high-speed stirred is dispersed in the solution to fine hair powder, nano-nickel oxide, obtains the composite modified auxiliary agent of polyaminoester emulsion.
Described a kind of automotive trim Woelm Alumina-non-woven sound-absorbing material of the coated polypropylene-base of polyurethane complex emulsions, its preparation method is as follows:
(1) first CNT, Woelm Alumina, auxiliary agent are dropped into together in aqueous polyurethane emulsion, ultrasonic process 50-60min, make material dispersed in emulsion, gained complex emulsions is for subsequent use;
(2) fibre and soya, volcanic ash micro mist and silane coupler mixed grinding are disperseed 2-2.5h, gained material mixes with other leftover materials, stir in rear input double screw extruder and melt extrude granulation at 170-180 DEG C of temperature, obtain modified polypropene base master batch;
(3) the modified polypropene base master batch of step (2) gained is dropped into melting at 180-200 DEG C in screw extruder, melt is the meltblown beam spinneret orifice ejection of 230-250 DEG C through temperature, and stretch under the high velocity, hot air stream effect of 250-280 DEG C laggard enter receiving system, being gathered on the reception device after net until filament uniformly sprays in silk screen by complex emulsions prepared by step (1), solidifies until polyurethane complex emulsions the polypropylene-base nonwoven material that to get product after drying completely.
Beneficial effect of the present invention is, the advantage of conventional polypropylene nonwoven material has been acted on through the fibre web material that obtains of composite modified polypropylene base master batch spray silk, and its mechanical property improves, surface wettability improves, tensile property is good, and the polyurethane complex emulsions of preparation is after the coated solidification of fiber surface, and the concrete dynamic modulus material wherein adulterated makes the strength enhancing of fiber, sonication damping is accelerated, and noise reduction is obvious; Sound-absorbing material light weight environmental protection prepared by the present invention, heat and flame, form stable is a kind of automobile-used sound-absorbing material of novel practical.
Detailed description of the invention
Embodiment
A kind of automotive trim Woelm Alumina-non-woven sound-absorbing material of the coated polypropylene-base of polyurethane complex emulsions, is characterized in that: described sound-absorbing material is made up of the raw material of following weight portion: CNT 0.01, fibre and soya 8, polypropylene 24,400 order Woelm Alumina 2, silane coupler 3, calgon 0.6, antioxidant 1076 0.1, anti-oxidant DLTP 0.2, Bis(lauroyloxy)dioctyltin 0.3, polymethyl methacrylate 15, volcanic ash micro mist 20, solid content are aqueous polyurethane emulsion 13, the auxiliary agent 2 of 10%;
Wherein auxiliary agent is made up of the raw material of following weight portion: 500 order fine hair powder 2, lauryl sodium sulfate 0.6, propylene glycol 5, solid content are aerosil colloidal sol 4, nano-nickel oxide 0.7, the water 12 of 20%, preparation method is: first drop in water by propylene glycol, lauryl sodium sulfate, be stirred to after material dissolves dispersion completely, add other leftover materials again, high-speed stirred is dispersed in the solution to fine hair powder, nano-nickel oxide, obtains the composite modified auxiliary agent of polyaminoester emulsion.
A kind of automotive trim Woelm Alumina-non-woven sound-absorbing material of the coated polypropylene-base of polyurethane complex emulsions, its preparation method is as follows:
(1) first CNT, Woelm Alumina, auxiliary agent are dropped into together in aqueous polyurethane emulsion, ultrasonic process 55min, make material dispersed in emulsion, gained complex emulsions is for subsequent use;
(2) fibre and soya, volcanic ash micro mist and silane coupler mixed grinding are disperseed 2.4h, gained material mixes with other leftover materials, stir in rear input double screw extruder and melt extrude granulation at 175 DEG C of temperature, obtain modified polypropene base master batch;
(3) the modified polypropene base master batch of step (2) gained is dropped into melting at 190 DEG C in screw extruder, melt is the meltblown beam spinneret orifice ejection of 245 DEG C through temperature, and stretch under the high velocity, hot air stream effect of 270 DEG C laggard enter receiving system, being gathered on the reception device after net until filament uniformly sprays in silk screen by complex emulsions prepared by step (1), solidifies until polyurethane complex emulsions the polypropylene-base nonwoven material that to get product after drying completely.
The sound-absorbing material obtained by the present embodiment is prepared into the thick thin layer of 8mm, and its surface density is: 362g/m
-2; Longitudinal tensile strength (N. (5cm)
-1) be: 65.2.
Its sound absorption qualities test result is:
| Frequency of sound wave | 100Hz | 200Hz | 500Hz | 1KHz | 2KHz | 3KHz | 4KHz | 5KHz |
| Acoustic absorptivity | 0.03 | 0.05 | 0.13 | 0.35 | 0.52 | 0.74 | 0.86 | 0.84 |
Claims (2)
1. automotive trim Woelm Alumina-non-woven sound-absorbing material of the coated polypropylene-base of polyurethane complex emulsions, it is characterized in that: described sound-absorbing material is made up of the raw material of following weight portion: CNT 0.01-0.02, fibre and soya 6-10, polypropylene 22-26, 325-400 order Woelm Alumina 1-2, silane coupler 2-3, calgon 0.5-0.8, antioxidant 1076 0.1-0.2, anti-oxidant DLTP 0.1-0.2, Bis(lauroyloxy)dioctyltin 0.2-0.3, polymethyl methacrylate 12-16, volcanic ash micro mist 18-22, solid content is the aqueous polyurethane emulsion 12-14 of 8-10%, auxiliary agent 1-2,
Described auxiliary agent is made up of the raw material of following weight portion: 400-500 order fine hair powder 1-2, lauryl sodium sulfate 0.5-0.6, propylene glycol 3-5, solid content are aerosil colloidal sol 4-5, nano-nickel oxide 0.6-0.8, the water 10-12 of 15-20%, preparation method is: first drop in water by propylene glycol, lauryl sodium sulfate, be stirred to after material dissolves dispersion completely, add other leftover materials again, high-speed stirred is dispersed in the solution to fine hair powder, nano-nickel oxide, obtains the composite modified auxiliary agent of polyaminoester emulsion.
2. a kind of automotive trim Woelm Alumina-non-woven sound-absorbing material of the coated polypropylene-base of polyurethane complex emulsions as claimed in claim 1, the preparation method of this material is as follows:
(1) first CNT, Woelm Alumina, auxiliary agent are dropped into together in aqueous polyurethane emulsion, ultrasonic process 50-60min, make material dispersed in emulsion, gained complex emulsions is for subsequent use;
(2) fibre and soya, volcanic ash micro mist and silane coupler mixed grinding are disperseed 2-2.5h, gained material mixes with other leftover materials, stir in rear input double screw extruder and melt extrude granulation at 170-180 DEG C of temperature, obtain modified polypropene base master batch;
(3) the modified polypropene base master batch of step (2) gained is dropped into melting at 180-200 DEG C in screw extruder, melt is the meltblown beam spinneret orifice ejection of 230-250 DEG C through temperature, and stretch under the high velocity, hot air stream effect of 250-280 DEG C laggard enter receiving system, being gathered on the reception device after net until filament uniformly sprays in silk screen by complex emulsions prepared by step (1), solidifies until polyurethane complex emulsions the polypropylene-base nonwoven material that to get product after drying completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510002714.0A CN104562702A (en) | 2015-01-05 | 2015-01-05 | Porous alumina-polyurethane composite emulsion-coated polypropylene-based non-woven sound-absorbing material for automotive interiors |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510002714.0A CN104562702A (en) | 2015-01-05 | 2015-01-05 | Porous alumina-polyurethane composite emulsion-coated polypropylene-based non-woven sound-absorbing material for automotive interiors |
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| Publication Number | Publication Date |
|---|---|
| CN104562702A true CN104562702A (en) | 2015-04-29 |
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|---|---|---|---|
| CN201510002714.0A Pending CN104562702A (en) | 2015-01-05 | 2015-01-05 | Porous alumina-polyurethane composite emulsion-coated polypropylene-based non-woven sound-absorbing material for automotive interiors |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104845036A (en) * | 2015-06-09 | 2015-08-19 | 李平兰 | Decorating interior sound insulation material |
| CN105780488A (en) * | 2016-04-21 | 2016-07-20 | 安徽皖翎羽绒制品有限公司 | Waterborne polyurethane coating agent containing superfine down feather fiber-nano aluminum oxide composite microsphere |
| CN108713967A (en) * | 2018-06-01 | 2018-10-30 | 叶建民 | A kind of sound absorption curtain fabric |
| CN109097866A (en) * | 2018-07-20 | 2018-12-28 | 苏州洛特兰新材料科技有限公司 | A kind of preparation method of sound-absorbing new material |
| CN113710845A (en) * | 2019-04-25 | 2021-11-26 | 3M创新有限公司 | Acoustic article and method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1671572A (en) * | 2002-07-31 | 2005-09-21 | 法国圣戈班玻璃厂 | Sound-damping profiled member |
| CN101807394A (en) * | 2010-04-13 | 2010-08-18 | 王艳 | Micro-nano-fiber composite layered sound-absorbing material |
| CN103476809A (en) * | 2011-05-18 | 2013-12-25 | 三井化学株式会社 | Propylene copolymer and propylene copolymer composition, molding and foam thereof, and processes for producing said molding and foam |
| CN103864360A (en) * | 2014-02-10 | 2014-06-18 | 安徽众凯架业有限责任公司 | Heat insulation mortar with sound absorbing effect and manufacturing method thereof |
| CN104059213A (en) * | 2013-03-21 | 2014-09-24 | 现代自动车株式会社 | Sound-absorbing Material For Automobile Using Foaming Urethane Foam To Which Carbon Nano-tube Is Applied And Preparation Method Thereof |
-
2015
- 2015-01-05 CN CN201510002714.0A patent/CN104562702A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1671572A (en) * | 2002-07-31 | 2005-09-21 | 法国圣戈班玻璃厂 | Sound-damping profiled member |
| CN101807394A (en) * | 2010-04-13 | 2010-08-18 | 王艳 | Micro-nano-fiber composite layered sound-absorbing material |
| CN103476809A (en) * | 2011-05-18 | 2013-12-25 | 三井化学株式会社 | Propylene copolymer and propylene copolymer composition, molding and foam thereof, and processes for producing said molding and foam |
| CN104059213A (en) * | 2013-03-21 | 2014-09-24 | 现代自动车株式会社 | Sound-absorbing Material For Automobile Using Foaming Urethane Foam To Which Carbon Nano-tube Is Applied And Preparation Method Thereof |
| CN103864360A (en) * | 2014-02-10 | 2014-06-18 | 安徽众凯架业有限责任公司 | Heat insulation mortar with sound absorbing effect and manufacturing method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104845036A (en) * | 2015-06-09 | 2015-08-19 | 李平兰 | Decorating interior sound insulation material |
| CN104845036B (en) * | 2015-06-09 | 2016-03-23 | 李平兰 | A kind of decoration interior sound insulation material |
| CN105780488A (en) * | 2016-04-21 | 2016-07-20 | 安徽皖翎羽绒制品有限公司 | Waterborne polyurethane coating agent containing superfine down feather fiber-nano aluminum oxide composite microsphere |
| CN108713967A (en) * | 2018-06-01 | 2018-10-30 | 叶建民 | A kind of sound absorption curtain fabric |
| CN109097866A (en) * | 2018-07-20 | 2018-12-28 | 苏州洛特兰新材料科技有限公司 | A kind of preparation method of sound-absorbing new material |
| CN113710845A (en) * | 2019-04-25 | 2021-11-26 | 3M创新有限公司 | Acoustic article and method thereof |
| US12198667B2 (en) | 2019-04-25 | 2025-01-14 | 3M Innovative Properties Compnay | Acoustic articles and methods thereof |
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Application publication date: 20150429 |