CN107283950A - It is a kind of for layer structure composite of low frequency absorption and preparation method thereof - Google Patents
It is a kind of for layer structure composite of low frequency absorption and preparation method thereof Download PDFInfo
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- CN107283950A CN107283950A CN201710524136.6A CN201710524136A CN107283950A CN 107283950 A CN107283950 A CN 107283950A CN 201710524136 A CN201710524136 A CN 201710524136A CN 107283950 A CN107283950 A CN 107283950A
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- piezo
- composite material
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- barium titanate
- preparation
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Classifications
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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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
-
- 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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/046—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Laminated Bodies (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to material processing field, and in particular to a kind of for layer structure composite of low frequency absorption and preparation method thereof.Methods described includes：Modified barium titanate powder is obtained after taking barium titanate powder and titante coupling agent mixing and ball milling；By ZnO, stearic acid, zinc stearate, magnesia, age resistor, Vulcanization accelerator TMTD, accelerant CZ, conductive black, modification barium titanate powder and sulphur, mixing, vulcanization after obtain piezo-electricity composite material；It is that polyurethane foam, both sides are piezo-electricity composite material according to intermediate layer, piezo-electricity composite material and polyurethane foam is obtained into layer structure composite using adhesive is compound.The present invention is using piezo-electricity composite material and polyurethane foam as sound-absorbing material structure, and using under piezo-electric effect and the synergy of porous foam, layered structural composite material obtains excellent effect of low-frequency sound absorption in the case of material thickness is less.
Description
Technical field
The invention belongs to material processing field, and in particular to a kind of layer structure composite for low frequency absorption and its
Preparation method.
Background technology
Modern society's noise problem is on the rise, and noise (especially Middle and low frequency noise) not only causes to damage to the body of people
Evil, can also cause element part accelerated ageing, reduce machine service life, and the development and application of noise reduction technology turn into important
Research contents.Traditional and single material far can not meet present demand, especially in low frequency absorption material, be thicker mostly
And bulky composite.Sound absorption composite construction be it is a kind of can realize particular frequency range sound absorption combination of materials, to difference
Environment uses various combination, with stronger application.Piezo-electricity composite material is a kind of effective with the compound of common expanded material
Combine sound-absorbing material.
There is a variety of energy conversion machine systems inside piezo-electricity composite material, include the conversion (piezoresistance of mechanical energy and electric energy
Damping material), the conversion (reversible hydrogen bond power consumption damping material) of mechanical energy and chemical energy, (rare earth is forever for the conversion of mechanical energy and magnetic energy
Magnetic resistance damping material) etc.；Foam composite material also possesses multiple kinds of energy transformation mechanism, including cell gasses vibration friction, filler with
Acoustic vibration etc., new sound absorption damping material can be developed using these mechanism.Positive inverse piezoelectric effect repeat function, vibrational energy
Continuous decrement；Remaining sound wave has carried out primary energy loss again when entering foam composite material, is finally consumed in the form of heat energy
Dissipate, so as to play the effect of vibration and noise reducing.
The content of the invention
The present invention is in view of the shortcomings of the prior art, it is therefore intended that provide a kind of layer structure composite wood for low frequency absorption
Material and preparation method thereof.
For achieving the above object, the technical solution adopted by the present invention is：
A kind of preparation method of layer structure composite for low frequency absorption, comprises the following steps：
(1) barium titanate powder is modified：A certain amount of barium titanate powder and titante coupling agent are taken, is put into ball mill
Modified barium titanate powder is obtained after ball milling；
(2) prepared by piezo-electricity composite material：ZnO, stearic acid, zinc stearate, oxygen are sequentially added in banbury or mill
Change magnesium, age resistor, Vulcanization accelerator TMTD, accelerant CZ, conductive black, step (1) modified barium titanate powder and sulphur, 40~
80 DEG C of 10~40min of mixing obtain elastomeric compound, and elastomeric compound obtains piezo-electricity composite material after vulcanization；
(3) layer structure material is compound：It is that 5~30mm polyurethane foams, both sides are 0.5~5mm pressures according to intermediate layer
The structure of composite, piezo-electricity composite material prepared by step (2) obtains layer with polyurethane foam using adhesive is compound
Shape structural composite material.
In such scheme, step (1) described titante coupling agent is oleic acid acyloxy (the dioctyl phosphoric acid acyl of isopropyl two
Epoxide) titanate esters, isopropyl three (dioctyl phosphoric acid acyloxy) titanate esters, double (two octyloxy pyrophosphoric acid ester groups) ethylene metatitanic acids
Ester, Di(dioctylpyrophosphato) ethylene titanate, the consumption of the titante coupling agent is barium titanate powder quality
2%~5%.
In such scheme, each group distribution ratio of step (2) described piezo-electricity composite material is：The parts by weight of ZnO 3~8, it is stearic
Sour 0.5~3 parts by weight, the parts by weight of zinc stearate 0.5~3, the parts by weight of magnesia 0.5~3, the weight of antioxidant 4010 0.5~2
Part, the parts by weight of Vulcanization accelerator TMTD 0.5~2, the parts by weight of accelerant CZ 0.5~2, the parts by weight of sulphur 1~3, the body of conductive black
Product is the 2~15% of piezo-electricity composite material cumulative volume, and the volume of modified barium titanate powder is piezo-electricity composite material cumulative volume
5%~85%.
In such scheme, the temperature of step (2) described vulcanization is 155~175 DEG C, and the time of vulcanization is 15~30min, sulphur
The pressure of change is 10~20Mpa.
In such scheme, step (3) described adhesive is polyurethane adhesive, neoprene-NBR or phenolic aldehyde-NBR.
Beneficial effects of the present invention：The present invention carries out sound absorption material using microcosmic piezo-electric effect and the damping principle of porous foam
It is prepared by material；Using piezo-electricity composite material and polyurethane foam as sound-absorbing material structure, in piezo-electric effect and the association of porous foam
Under same-action, layered structural composite material obtains excellent effect of low-frequency sound absorption in the case of material thickness is less.
Brief description of the drawings
Fig. 1 is the low frequency absorption performance of the layer structure composite prepared in embodiment 1,2,3,4,5.
Embodiment
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention
Content is not limited solely to the following examples.
Embodiment 1
A kind of preparation method of layer structure composite for low frequency absorption, its preparation process is as follows：
(1) barium titanate powder is modified：2.5% TMC-101 of a certain amount of barium titanate powder and powder quality is taken, is put
Enter ball milling 5min in ball mill, obtain modified barium titanate；
(2) prepared by piezo-electricity composite material：Sequentially added in banbury or mill 100 parts of nitrile rubber, 3 parts of ZnO,
0.75 part of stearic acid, 0.75 part of zinc stearate, 0.75 part of magnesia, 0.6 part of antioxidant 4010,0.6 part of Vulcanization accelerator TMTD, rush
It is 8% to enter 0.6 part of agent CZ and 1 part of sulphur, the volume accounting that the volume accounting of conductive black is 6%, barium carbonate powder, 40
DEG C mixing 25min obtain elastomeric compound, elastomeric compound vulcanizes 15min under the conditions of 165 DEG C, 15MPa and obtains piezo-electricity composite material；
(3) layer structure material is compound：It is that 20mm polyurethane foams, both sides are 1mm Piezoelectric anisotropy materials according to intermediate layer
The structure of material, makees adhesive using polyurethane adhesive (JQ-3 adhesive) by plate-shaped product and sheet polyurethane foam and answers
Conjunction obtains layer structure composite.
Effect assessment：Different frequency Layered structural composite material average sound absorption coefficient absorbs sound more than 0.2 under 250Hz
Coefficient is 0.59 to the maximum.
Embodiment 2
A kind of preparation method of layer structure composite for low frequency absorption, its preparation process is as follows：
(1) barium titanate powder is modified：Take 3% isopropyl three (two of a certain amount of barium titanate powder and powder quality
Octylphosphonic acid acyloxy) titanate esters (TMC-102), ball milling 9min in ball mill is put into, modified barium titanate is obtained；
(2) prepared by piezo-electricity composite material：Sequentially added in banbury or mill 100 parts of nitrile rubber, 4 parts of ZnO,
1.2 parts of stearic acid, 1.2 parts of zinc stearate, 1.2 parts of magnesia, 0.8 part of antioxidant 4010,1.6 parts of Vulcanization accelerator TMTD, promotion
0.8 part of agent CZ and sulphur 0.9phr, the volume accounting that the volume accounting of conductive black is 7%, barium carbonate powder are 10%,
60 DEG C of mixing 25min obtain elastomeric compound, and elastomeric compound vulcanizes 20min under the conditions of 170 DEG C, 15MPa and obtains piezo-electricity composite material；
(3) layer structure material is compound：It is that 25mm polyurethane foams, both sides are 1mm Piezoelectric anisotropy materials according to intermediate layer
The structure of material, plate-shaped product and sheet polyurethane foam are glued using neoprene-NBR [XY-402 (73# glue)]
Mixture is compound to obtain layer structure composite.
Effect assessment：Different frequency Layered structural composite material average sound absorption coefficient absorbs sound more than 0.2 under 200Hz
Coefficient is 0.56 to the maximum.
Embodiment 3
A kind of preparation method of layer structure composite for low frequency absorption, its preparation process is as follows：
(1) barium titanate powder is modified：Take 4% double (two octyloxies of a certain amount of barium titanate powder and powder quality
Pyrophosphoric acid ester group) ethylene titanate esters (TMC-201), it is put into ball milling 10min in ball mill；
(2) prepared by piezo-electricity composite material：Sequentially added in banbury or mill 100 parts of nitrile rubber, 5 parts of ZnO,
1.5 parts of stearic acid, 1.5 parts of zinc stearate, 1 part of magnesia, 1 part of antioxidant 4010,2 parts of Vulcanization accelerator TMTD, accelerant CZ 1
Part is 18% with 1.5 parts of sulphur, the volume accounting that the volume accounting of conductive black is 8%, barium carbonate powder, in 60 DEG C of mixings
28min obtains elastomeric compound, and elastomeric compound vulcanizes 20min under the conditions of 170 DEG C, 15MPa and obtains piezo-electricity composite material；
(3) layer structure material is compound：It is that 20mm polyurethane foams, both sides are 2mm Piezoelectric anisotropy materials according to intermediate layer
The structure of material, plate-shaped product and sheet polyurethane foam are glued using neoprene-NBR (Chemlok CH205)
Mixture is compound to obtain layer structure composite.
Effect assessment：Different frequency Layered structural composite material average sound absorption coefficient absorbs sound more than 0.2 under 200Hz
Coefficient is 0.51 to the maximum.
Embodiment 4
A kind of preparation method of layer structure composite for low frequency absorption, its preparation process is as follows：
(1) barium titanate powder is modified：Take 3.5% double (two pungent oxygen of a certain amount of barium titanate powder and powder quality
Base pyrophosphoric acid ester group) ethylene titanate esters (TMC-311), it is put into ball milling 18min in ball mill；
(2) prepared by piezo-electricity composite material：Sequentially added in banbury or mill 100 parts of nitrile rubber, 2 parts of ZnO,
0.75 part of stearic acid, 0.75 part of zinc stearate, 0.75 part of magnesia, 0.5 part of antioxidant 4010,1 part of Vulcanization accelerator TMTD, promotion
0.5 part of agent CZ is 20% with 0.75 part of sulphur, the volume accounting that the volume accounting of conductive black is 3%, barium carbonate powder,
60 DEG C of mixing 30min obtain elastomeric compound, and elastomeric compound vulcanizes 20min under the conditions of 165 DEG C, 10MPa and obtains piezo-electricity composite material；
(3) layer structure material is compound：It is that 30mm polyurethane foams, both sides are 2mm Piezoelectric anisotropy materials according to intermediate layer
The structure of material, makees adhesive using polyurethane adhesive (J-38 adhesive) by plate-shaped product and sheet polyurethane foam and answers
Conjunction obtains layer structure composite.
Effect assessment：Different frequency Layered structural composite material average sound absorption coefficient absorbs sound more than 0.5 under 200Hz
Coefficient is 0.88 to the maximum.
Embodiment 5
A kind of preparation method of layer structure composite for low frequency absorption, its preparation process is as follows：
(1) barium titanate powder is modified：Take 4.5% double (two pungent oxygen of a certain amount of barium titanate powder and powder quality
Base pyrophosphoric acid ester group) ethylene titanate esters (TMC-311), it is put into ball milling 20min in ball mill；
(2) prepared by piezo-electricity composite material：Sequentially added in banbury or mill 100 parts of nitrile rubber, 5 parts of ZnO,
1.5 parts of stearic acid, 1.5 parts of zinc stearate, 1 part of magnesia, 1 part of antioxidant 4010,2 parts of Vulcanization accelerator TMTD, accelerant CZ 1
Part, 1.5 parts of sulphur, the volume accounting that the volume accounting of conductive black is 10%, barium carbonate powder are 25%, in 50 DEG C of mixings
30min obtains elastomeric compound, and elastomeric compound vulcanizes 25min under the conditions of 160 DEG C, 15MPa and obtains piezo-electricity composite material.
(3) layer structure material is compound：It is that 27mm polyurethane foams, both sides are 1mm Piezoelectric anisotropy materials according to intermediate layer
The structure of material, the plate-shaped product of preparation and sheet polyurethane foam are glued using polyurethane adhesive (J-38 adhesive)
Mixture is compound to obtain layer structure composite.
Effect assessment：Different frequency Layered structural composite material average sound absorption coefficient absorbs sound more than 0.15 under 200Hz
Coefficient is 0.45 to the maximum.
Obviously, above-described embodiment is only intended to clearly illustrate made example, and the not limitation to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change or change therefore amplified
Move within still in the protection domain of the invention.
Claims (5)
1. the preparation method of a kind of layer structure composite for low frequency absorption, it is characterised in that comprise the following steps：
（1）Barium titanate powder is modified：A certain amount of barium titanate powder and titante coupling agent are taken, ball milling in ball mill is put into
Modified barium titanate powder is obtained afterwards；
（2）It is prepared by piezo-electricity composite material：Sequentially added in banbury or mill ZnO, stearic acid, zinc stearate, magnesia,
Age resistor, Vulcanization accelerator TMTD, accelerant CZ, conductive black, step（1）Modified barium titanate powder and sulphur, it is mixed at 40 ~ 80 DEG C
10 ~ 40min of refining obtains elastomeric compound, and elastomeric compound obtains piezo-electricity composite material after vulcanization；
（3）Layer structure material it is compound：It is that 5 ~ 30mm polyurethane foams, both sides are 0.5 ~ 5mm Piezoelectric anisotropies according to intermediate layer
The structure of material, by step（2）The piezo-electricity composite material of preparation obtains layer structure with polyurethane foam using adhesive is compound
Composite.
2. preparation method according to claim 1, it is characterised in that step（1）The titante coupling agent is isopropyl
The oleic acid acyloxy of base two（Dioctyl phosphoric acid acyloxy）Titanate esters, isopropyl three (dioctyl phosphoric acid acyloxy) titanate esters, double (two
Octyloxy pyrophosphoric acid ester group) ethylene titanate esters, Di(dioctylpyrophosphato) ethylene titanate, titanate ester coupling
The consumption of agent is the 2% ~ 5% of barium titanate powder quality.
3. preparation method according to claim 1, it is characterised in that step（2）The each component of the piezo-electricity composite material
Match and be：The parts by weight of ZnO 3 ~ 8, the parts by weight of stearic acid 0.5 ~ 3, the parts by weight of zinc stearate 0.5 ~ 3, the weight of magnesia 0.5 ~ 3
Part, the parts by weight of antioxidant 4010 0.5 ~ 2, the parts by weight of Vulcanization accelerator TMTD 0.5 ~ 2, the parts by weight of accelerant CZ 0.5 ~ 2, sulphur 1 ~ 3
Parts by weight, the volume of conductive black is the 2 ~ 15% of piezo-electricity composite material cumulative volume, and the volume of modified barium titanate powder is piezoelectricity
The 5% ~ 85% of total composite volume.
4. preparation method according to claim 1, it is characterised in that step（2）The temperature of the vulcanization is 155 ~ 175
DEG C, the time of vulcanization is 15 ~ 30min, and the pressure of vulcanization is 10 ~ 20Mpa.
5. preparation method according to claim 1, it is characterised in that step（3）Described adhesive is polyurethane adhesive, chlorine
Butyl- NBR or phenolic aldehyde-NBR.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710524136.6A CN107283950A (en) | 2017-06-30 | 2017-06-30 | It is a kind of for layer structure composite of low frequency absorption and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710524136.6A CN107283950A (en) | 2017-06-30 | 2017-06-30 | It is a kind of for layer structure composite of low frequency absorption and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108641140A (en) * | 2018-04-28 | 2018-10-12 | 武汉工程大学 | Rare earth oxide/nitrile rubber-polyurethane foam double-layer composite material and preparation method thereof for low frequency absorption |
| CN108841018A (en) * | 2018-04-28 | 2018-11-20 | 武汉工程大学 | Nitrile rubber-polyurethane foam interlayer composite material and preparation method thereof for low frequency absorption |
| CN115320190A (en) * | 2021-05-11 | 2022-11-11 | 镇江市至善新材料科技有限公司 | Layered structure acoustic metamaterial for broadband sound absorption and preparation method thereof |
| CN115368534A (en) * | 2022-09-26 | 2022-11-22 | 四川大学 | High-electrostriction polyurethane elastomer and forming method thereof |
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| CN103009731A (en) * | 2013-01-21 | 2013-04-03 | 株洲联诚集团有限责任公司 | Piezoelectric sound absorption composite material and preparation method thereof |
| TW201632695A (en) * | 2015-03-11 | 2016-09-16 | 國立臺灣科技大學 | Acoustic absorbing material |
| CN106750656A (en) * | 2016-12-26 | 2017-05-31 | 武汉工程大学 | A kind of barium titanate/rubber piezo-electricity composite material for low frequency absorption and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09250189A (en) * | 1996-03-15 | 1997-09-22 | Tokai Rubber Ind Ltd | Sound insulation panel |
| JPH11321424A (en) * | 1998-05-20 | 1999-11-24 | Nissan Motor Co Ltd | Sound-shielding structural body |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108641140A (en) * | 2018-04-28 | 2018-10-12 | 武汉工程大学 | Rare earth oxide/nitrile rubber-polyurethane foam double-layer composite material and preparation method thereof for low frequency absorption |
| CN108841018A (en) * | 2018-04-28 | 2018-11-20 | 武汉工程大学 | Nitrile rubber-polyurethane foam interlayer composite material and preparation method thereof for low frequency absorption |
| CN108641140B (en) * | 2018-04-28 | 2020-11-27 | 武汉工程大学 | Rare earth oxide/nitrile rubber-polyurethane foam double-layer composite material for low-frequency sound absorption and preparation method thereof |
| CN115320190A (en) * | 2021-05-11 | 2022-11-11 | 镇江市至善新材料科技有限公司 | Layered structure acoustic metamaterial for broadband sound absorption and preparation method thereof |
| CN115368534A (en) * | 2022-09-26 | 2022-11-22 | 四川大学 | High-electrostriction polyurethane elastomer and forming method thereof |
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Application publication date: 20171024 |