EP0720143A1 - Absorbierendes Material für Schallwellen - Google Patents
Absorbierendes Material für Schallwellen Download PDFInfo
- Publication number
- EP0720143A1 EP0720143A1 EP95402932A EP95402932A EP0720143A1 EP 0720143 A1 EP0720143 A1 EP 0720143A1 EP 95402932 A EP95402932 A EP 95402932A EP 95402932 A EP95402932 A EP 95402932A EP 0720143 A1 EP0720143 A1 EP 0720143A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- acid
- composition
- acids
- derived
- counterions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011358 absorbing material Substances 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 32
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000002253 acid Substances 0.000 claims abstract description 11
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims abstract description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 10
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920000642 polymer Polymers 0.000 claims abstract description 9
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 8
- 239000001257 hydrogen Substances 0.000 claims abstract description 8
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920002125 Sokalan® Polymers 0.000 claims abstract description 7
- 229920002521 macromolecule Polymers 0.000 claims abstract description 7
- 239000011148 porous material Substances 0.000 claims abstract description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 6
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 5
- 235000019260 propionic acid Nutrition 0.000 claims abstract description 5
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims abstract description 5
- 230000009974 thixotropic effect Effects 0.000 claims abstract description 5
- 150000007513 acids Chemical class 0.000 claims abstract description 3
- 150000001414 amino alcohols Chemical class 0.000 claims abstract description 3
- 150000001735 carboxylic acids Chemical class 0.000 claims abstract description 3
- 150000007530 organic bases Chemical class 0.000 claims abstract description 3
- 150000003009 phosphonic acids Chemical class 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 20
- 239000002250 absorbent Substances 0.000 claims description 7
- 230000002745 absorbent Effects 0.000 claims description 7
- 229920002873 Polyethylenimine Polymers 0.000 claims description 3
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 claims description 3
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 2
- 230000003993 interaction Effects 0.000 claims description 2
- 230000001902 propagating effect Effects 0.000 claims description 2
- 150000003460 sulfonic acids Chemical class 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 abstract description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium group Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract description 5
- 239000004584 polyacrylic acid Substances 0.000 abstract description 5
- PUAQLLVFLMYYJJ-UHFFFAOYSA-N 2-aminopropiophenone Chemical compound CC(N)C(=O)C1=CC=CC=C1 PUAQLLVFLMYYJJ-UHFFFAOYSA-N 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 229960004418 trolamine Drugs 0.000 abstract 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 10
- -1 2-hydroxyethylammonium ion Chemical class 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 125000001424 substituent group Chemical group 0.000 description 4
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 3
- 239000004471 Glycine Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- QFTYSVGGYOXFRQ-UHFFFAOYSA-N dodecane-1,12-diamine Chemical compound NCCCCCCCCCCCCN QFTYSVGGYOXFRQ-UHFFFAOYSA-N 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical compound [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 description 2
- 125000003396 thiol group Chemical group [H]S* 0.000 description 2
- YEGPVWSPNYPPIK-UHFFFAOYSA-N 4-hydroxybutane-1-sulfonic acid Chemical compound OCCCCS(O)(=O)=O YEGPVWSPNYPPIK-UHFFFAOYSA-N 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229940095054 ammoniac Drugs 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- UOKRBSXOBUKDGE-UHFFFAOYSA-N butylphosphonic acid Chemical compound CCCCP(O)(O)=O UOKRBSXOBUKDGE-UHFFFAOYSA-N 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 150000002169 ethanolamines Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 125000001476 phosphono group Chemical group [H]OP(*)(=O)O[H] 0.000 description 1
- 230000008521 reorganization Effects 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
- DZLFLBLQUQXARW-UHFFFAOYSA-N tetrabutylammonium Chemical compound CCCC[N+](CCCC)(CCCC)CCCC DZLFLBLQUQXARW-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
Definitions
- the present invention relates to the absorption of acoustic waves in the audible range, between 20 Hz and 20 kHz.
- An object of the present invention is to define a material absorbing sound waves in the audible spectrum, which is as light and as compact as possible, and which is effective even in the low frequency region of the sound spectrum.
- said structure material is a deformable porous material impregnated with said thixotric material.
- At least some of said counterions carry hydroxyl groups allowing interactions by hydrogen bonds.
- said macromolecule is an acid polymer, such as polyacrylic acids, polystyrenesulfonic acids and carboxycelluloses, the counterions being from organic bases such as ammonia, amino alcohols (mono, di, or triethanolamine) and quaternary ammonium bases.
- said macromolecule is a basic polymer such as polyethyleneimine, the counterions being derived from acids chosen from the group formed in particular by carboxylic acids such as citric acid, propionic acid and sebacic acid, and sulfonic and phosphonic acids.
- the material according to the invention is used either in the form of coatings or by impregnation in a porous body.
- the materials which, according to the invention, constitute sound absorbers having properties which are extremely advantageous from the point of view of lightness and bulk, can be divided into three groups.
- a first group consists of acid polymers, such as polyacrylic acid, combined with a base such as triethanolamine.
- the matrix consists of a set of carboxy sites (of negative charges) distributed uniformly along the chains.
- the counterions originating from triethanolamine have polar substituents which can give hydrogen bonds.
- an external force such as a sound wave
- the network of polyacrylic acid deforms and the counterions move to immobilize near the nearest negative charge as soon as the stress ceases (effect thixotropy, mechanical-electrical conversion).
- the material of the invention makes it possible to combine two behaviors, one of the elastic type relating more particularly to the network of electric charges for low activation energy, the other of the thixotropic type, for the higher energy d 'activation (viscosity and electro-mechanical effect).
- the single figure is a diagram showing as a function of the frequency F of the sound wave, expressed in Hz, the reflection coefficient R expressed in dB.
- the dashed line curve corresponds to the absorption of sound by a porous material; the solid line curve corresponds to the absorption of sound by the same porous material impregnated with a material consisting of polyacrylic acid and of which only 10% of the acid sites are salified with triethanolamine.
- the material of the invention can, as in the example illustrated, be used by impregnation in a porous material.
- the counterions come from small organic molecules (mono or polyfunctional) comprising at least one basic site (amine) and optionally the substituents capable of forming the hydrogen bonds.
- a second group of materials is constituted by a basic polymer such as polyethyleneimine, the counterions (mono or polyvalent) coming from small organic molecules (mono or polyfunctional) comprising at least one acid site [carboxy (COOH), sulfo ( SO 3 H), phosphono (PO 3 H)] and optionally substituents capable of forming hydrogen bonds (-OH, -SH, -NH 2 , -COOH, etc.).
- a basic polymer such as polyethyleneimine
- the counterions mono or polyvalent coming from small organic molecules (mono or polyfunctional) comprising at least one acid site [carboxy (COOH), sulfo ( SO 3 H), phosphono (PO 3 H)] and optionally substituents capable of forming hydrogen bonds (-OH, -SH, -NH 2 , -COOH, etc.).
- the counterions can thus be derived from citric acid, propionic acid and glycolic acid, this list not being limiting.
- the invention is not limited to the materials described but applies to all materials meeting the general definition given.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9415646A FR2728715B1 (fr) | 1994-12-26 | 1994-12-26 | Materiau absorbant les ondes acoustiques |
| FR9415646 | 1994-12-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0720143A1 true EP0720143A1 (de) | 1996-07-03 |
| EP0720143B1 EP0720143B1 (de) | 2000-09-06 |
Family
ID=9470239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19950402932 Expired - Lifetime EP0720143B1 (de) | 1994-12-26 | 1995-12-22 | Absorbierendes Material für Schallwellen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0720143B1 (de) |
| DE (1) | DE69518730D1 (de) |
| FR (1) | FR2728715B1 (de) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3843576A (en) * | 1972-09-20 | 1974-10-22 | United States Steel Corp | Aqueous coating compositions of ethylene/acrylic acid copolymer and phenolic resin |
| US4374172A (en) * | 1977-12-19 | 1983-02-15 | Teroson Gmbh | Sound insulating material |
| JPS61268439A (ja) * | 1985-05-22 | 1986-11-27 | 三菱油化株式会社 | 制振用複合鋼板 |
| DE3708961A1 (de) * | 1987-03-22 | 1988-10-13 | Pelzer Helmut | Mehrfunktionales isolationssystem fuer schwingende flaechen |
| EP0360037A2 (de) * | 1988-09-19 | 1990-03-28 | Siemens Aktiengesellschaft | Dämpfungsmasse für Oberflächen-wellenbauelemente |
| JPH06210800A (ja) * | 1993-01-20 | 1994-08-02 | Nippon Carbide Ind Co Inc | 制振性薄葉体 |
| EP0653464A2 (de) * | 1993-11-17 | 1995-05-17 | Bridgestone Corporation | Polymerzusammensetzung mit niedrigen Modulen und Verfahren zur Herstellung derselben |
-
1994
- 1994-12-26 FR FR9415646A patent/FR2728715B1/fr not_active Expired - Fee Related
-
1995
- 1995-12-22 DE DE69518730T patent/DE69518730D1/de not_active Expired - Lifetime
- 1995-12-22 EP EP19950402932 patent/EP0720143B1/de not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3843576A (en) * | 1972-09-20 | 1974-10-22 | United States Steel Corp | Aqueous coating compositions of ethylene/acrylic acid copolymer and phenolic resin |
| US4374172A (en) * | 1977-12-19 | 1983-02-15 | Teroson Gmbh | Sound insulating material |
| JPS61268439A (ja) * | 1985-05-22 | 1986-11-27 | 三菱油化株式会社 | 制振用複合鋼板 |
| DE3708961A1 (de) * | 1987-03-22 | 1988-10-13 | Pelzer Helmut | Mehrfunktionales isolationssystem fuer schwingende flaechen |
| EP0360037A2 (de) * | 1988-09-19 | 1990-03-28 | Siemens Aktiengesellschaft | Dämpfungsmasse für Oberflächen-wellenbauelemente |
| JPH06210800A (ja) * | 1993-01-20 | 1994-08-02 | Nippon Carbide Ind Co Inc | 制振性薄葉体 |
| EP0653464A2 (de) * | 1993-11-17 | 1995-05-17 | Bridgestone Corporation | Polymerzusammensetzung mit niedrigen Modulen und Verfahren zur Herstellung derselben |
Non-Patent Citations (2)
| Title |
|---|
| DATABASE WPI Section Ch Week 8702, Derwent World Patents Index; Class A88, AN 87-010871 * |
| PATENT ABSTRACTS OF JAPAN vol. 018, no. 572 (M - 1696) 2 November 1994 (1994-11-02) * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2728715A1 (fr) | 1996-06-28 |
| DE69518730D1 (de) | 2000-10-12 |
| EP0720143B1 (de) | 2000-09-06 |
| FR2728715B1 (fr) | 1997-01-31 |
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