CN105922679A - Sound absorbing and sound insulating composite material - Google Patents
Sound absorbing and sound insulating composite material Download PDFInfo
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- CN105922679A CN105922679A CN201610267101.4A CN201610267101A CN105922679A CN 105922679 A CN105922679 A CN 105922679A CN 201610267101 A CN201610267101 A CN 201610267101A CN 105922679 A CN105922679 A CN 105922679A
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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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- 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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different 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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/08—Oxygen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- 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
- B32B2262/06—Vegetal fibres
- B32B2262/062—Cellulose fibres, e.g. cotton
- B32B2262/065—Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention relates to an automobile sound insulating material, and concretely relates to a sound absorbing and sound insulating composite material. The composite material is composed of the following three layers: a ramie gray cloth used as a middle layer, a nitrile butadiene rubber layer used as one side surface layer, and a thermoplastic resin layer used as another side surface layer, the two side surface layers are bonded to the middle layer through an adhesive, and the nitrile butadiene rubber layer contains tetrapod-like zinc oxide whiskers, vermiculite powder, a coupling agent, a cross-linking agent and an antioxidant; and the thermoplastic resin layer adopts an ethylene-vinyl acetate copolymer, and also contains nano-silica, the coupling agent, the cross-linking agent and the antioxidant. The sound insulating material adopts the nitrile butadiene rubber layer, and adopts vermiculite and tetrapod-like zinc oxide whiskers as fillers, so a sound absorption effect can be reached; and the three layers comprising a ramie gray cloth used as a middle layer, a nitrile butadiene rubber layer used as one side surface layer and a thermoplastic resin layer used as another side surface layer are adopted, so the sound insulation effect is greatly improved.
Description
Technical field
The present invention relates to vapour Soundproof material for vehicle.
Background technology
Along with the progress of the mankind, the prosperity of science, noise pollution has become as very important problem.Absorb noise, reduce noise pollution and be related to the important topic of human society coordinated development.Along with going deep into of research, the material of various absorption sound waves produces therewith.Its sound insulation principle is all to utilize when sound wave is by certain object, and this object can absorb, reflect weakening so that the continuation cutting off sound wave is propagated, thus reaches the effect of sound insulation.Along with the development of auto industry, to the sound insulation value of deadener, thermostability, mechanical property requirement more and more higher, conventional material is also increasingly difficult to meet requirement.
Defective tightness is combined between various thermoplastic resin molecules in the puigging of the auto sound material of conventional formulation, and interface cohesion is poor between thermoplastic resin and filler, the most closely knit, it is difficult to reach preferable soundproof effect, and owing to the addition of high amount of inorganic filler, increase material weight, deviate from mutually with the trend of automotive light weight technology.
Summary of the invention
For above-mentioned technical problem, the present invention provides a kind of sound insulation, acoustically effective preferably to absorb sound acoustic dampening composite.
The technical solution used in the present invention is: a kind of sound absorption acoustic dampening composite, it is by up of three layers, intermediate layer is Boehmeria embryo cloth, side surface layer is nitrile rubber layer, opposite side surface layer is thermoplastic resin, both sides surface layer passes through binding agent and interlayer adhesion, is added with four acicular type zinc oxide crystal whisker, vermiculite power, coupling agent, cross-linking agent and antioxidant in nitrile rubber layer；Thermoplastic resin uses ethylene-vinyl acetate copolymer, is wherein added with nano silicon, coupling agent, cross-linking agent and antioxidant.
As preferably, described nitrile rubber layer forms according to the mass fraction of 55 65 parts of nitrile rubbers, 25 parts of four acicular type zinc oxide crystal whiskers, 30 40 parts of vermiculite powers, 12 parts of coupling agents, 12 parts of cross-linking agent and 0.5 1 parts of antioxidant.
As preferably, described thermoplastic resin forms according to the mass fraction of 90 100 parts of ethylene-vinyl acetate copolymers, 3 10 parts of nano silicons, 12 parts of coupling agents, 12 parts of cross-linking agent, 0.5 1 parts of antioxidant.
As preferably, the apparent density of described four acicular type zinc oxide crystal whisker is 0.1 0.3 g/cm3。
As preferably, the granularity of described vermiculite power is 10 30 mesh.
As preferably, the coupling agent of both sides surface layer all uses aminopropyl triethoxysilane, VTES or ethylenediamine hydroxypropyl methyl dimethoxysilane.
As preferably, the cross-linking agent of both sides surface layer all uses stearoyl, chloro benzoyl peroxide or cumyl peroxide.
As preferably, the antioxidant of both sides surface layer all uses 2, tri-grades of butyl-4-methylphenols of 6-.
As preferably, described binding agent is glue.
As preferably, the particle diameter of described nano silicon is 40 80nm, and specific surface area is 150 200m2/g。
As can be known from the above technical solutions, the deadener of the present invention uses nitrile rubber, with vermiculite power and four acicular type zinc oxide crystal whisker as filler, can reach preferable acoustically effective；Meanwhile, use intermediate layer be pure fiber crops embryo cloth, side surface layer be nitrile rubber layer, another side be three layers of thermoplastic resin, substantially increase soundproof effect.
Detailed description of the invention
The present invention is described more detail below, and illustrative examples and explanation in this present invention are used for explaining the present invention, but not as a limitation of the invention.
A kind of sound absorption acoustic dampening composite, it is by up of three layers, and side surface layer is nitrile rubber layer, and opposite side surface layer is thermoplastic resin, both sides surface layer passes through binding agent and interlayer adhesion, is added with four acicular type zinc oxide crystal whisker, vermiculite power, coupling agent, cross-linking agent and antioxidant in nitrile rubber layer；Thermoplastic resin uses ethylene-vinyl acetate copolymer, is wherein added with nano silicon, coupling agent, cross-linking agent and antioxidant.The surface texture of the ramee in Boehmeria embryo cloth can play the good effect consuming acoustic wave energy.Some hollow of ramee cell, a part of edge attached cell matter.Having simple pit on ramee cell wall, it communicates with peripheral fibres cell or cell wall cell.Cell is the same with fiber finer cell wall in oval, polygon with irregularly shaped, when sound wave passes entrance Boehmeria embryo cloth from side facing, sound wave by multiple reflections, absorption and rubs in fibrous inside and fabric gap between same fiber so that the big lossy of acoustic wave energy, sound absorbing capabilities is greatly reinforced.The binding agent of the present invention uses glue, and its main component PVAL adhesive property is good.Under pressure, glue has certain permeability, it is possible to well bond with ramie fabric, but ramie fabric can not be permeated completely, so that there is gap between ramee, when sound wave enters, part energy must be consumed, thus improve sound absorbing capabilities further.
As preferably, nitrile rubber layer forms according to the mass fraction of 55 65 parts of nitrile rubbers, 25 parts of four acicular type zinc oxide crystal whiskers, 30 40 parts of vermiculite powers, 12 parts of coupling agents, 12 parts of cross-linking agent and 0.5 1 parts of antioxidant；Wherein nitrile rubber has oil resistant, resistance to benzene, the performance such as ageing-resistant and when by External Force Acting, can produce energy loss, be the excellent sound absorption base material under various frequency；Four acicular type zinc oxide crystal whisker density is high, and ratio weighs 5.8, absorbable sonic vibration, and is converted to heat energy, makes material have sound absorption function, thus reaches soundproof effect, and the apparent density of the four acicular type zinc oxide crystal whisker of the present invention is 0.1 0.3 g/cm3, can reach optimal soundproof effect；Vermiculite power, as foaming characteristic filler, can make acoustic velocity of material be remarkably decreased, and attenuation constant substantially increases, and can reach preferable acoustically effective；And vermiculite power density is little, cheap, when the granularity of use is 10 30 mesh, not only acting as filling effect, and can form air layer, acoustically effective is optimal.
Thermoplastic resin forms according to the mass fraction of 90 100 parts of ethylene-vinyl acetate copolymers, 3 10 parts of nano silicons, 12 parts of coupling agents, 12 parts of cross-linking agent, 0.5 1 parts of antioxidant.Wherein in ethylene-vinyl acetate copolymer, the content of vinylacetate is 30 40wt% so that the quick adhesive property of copolymer is preferable；And copolymer is without solvent, free from environmental pollution, safety is higher；Nano silicon has porous, polymolecularity, light weight, and chemical stability is preferable, and it has the good compatibility and interface bond strength with ethylene-vinyl acetate copolymer.The present invention uses the particle diameter of nano silicon to be 40 80nm, and specific surface area is 150 200m2/ g, can reach optimal soundproof effect.
Coupling agent can reduce the viscosity of ethylene-vinyl acetate copolymer, improves the dispersion of four acicular type zinc oxide crystal whisker to improve processing characteristics, and then makes the material of preparation obtain good surface quality and mechanical performance etc.；The coupling agent of the present invention uses aminopropyl triethoxysilane, VTES or ethylenediamine hydroxypropyl methyl dimethoxysilane；The content of cross-linking agent, without too high, only need it that thermoplastic resin can be made fully to solidify and cross-links, and the present invention uses stearoyl, chloro benzoyl peroxide or cumyl peroxide, can obtain more preferable effect；Antioxidant uses 2, and tri-grades of butyl-4-methylphenols of 6-, it has high oxidation resistance, and the compatibility with nitrile rubber is good, does not separates out, will not polluted product.
Embodiment 1
By mass fraction by 1 part of aminopropyl triethoxysilane, 2 parts of four acicular type zinc oxide crystal whiskers and 30 parts of vermiculite power mixing, wherein the granularity of vermiculite power is 10 mesh, and the apparent density of four acicular type zinc oxide crystal whisker is 0.1 g/cm3；Add 55 parts of nitrile rubbers, 1 part of stearoyl and 0.5 part 2, tri-grades of butyl-4-methylphenols of 6-, and mix homogeneously；Then with screw extruder carry out extruding, pelletize, the operating temperature of extruder keeps 80 DEG C；Then above-mentioned pellet mould is placed on vulcanizer and makes diaphragm；Finally by diaphragm temperature be 130 DEG C, vacuum for-0.1MPa under conditions of vacuum hotpressing 25min, make the thick nitrile rubber layer sound insulation sheet material of 6mm.
By mass fraction, to 3 parts of nano silicons, 1 part of aminopropyl triethoxysilane being carried out surface process, wherein the particle diameter of nano silicon is 40nm, and specific surface area is 150m2/g；Add 90 parts of ethylene-vinyl acetate copolymers, 1 part of stearoyl and 0.5 part 2, tri-grades of butyl-4-methylphenols of 6-, and mix homogeneously；Then with screw extruder carry out extruding, pelletize, the operating temperature of extruder keeps 80 DEG C；Then above-mentioned pellet mould is placed on vulcanizer and makes diaphragm；Finally by diaphragm temperature be 130 DEG C, vacuum for-0.1MPa under conditions of vacuum hotpressing 25min, make the thick thermoplastic resin sound insulation sheet material of 2mm.
Above-mentioned nitrile rubber layer sound insulation sheet material and thermoplastic resin sound insulation sheet material are bonded with intermediate layer Boehmeria embryo cloth glue as both sides surface layer, obtains 3-layer composite material.After testing, this 3-layer composite material oise insulation factor in the frequency range of 2000 2500Hz reaches 46.3dB, and the acoustic absorptivity in the frequency range of 1000 1500Hz reaches 0.41.
Embodiment 2
By mass fraction by 2 parts of VTESs, 3 parts of four acicular type zinc oxide crystal whiskers and 35 parts of vermiculite power mixing, wherein the granularity of vermiculite power is 20 mesh, and the apparent density of four acicular type zinc oxide crystal whisker is 0.2 g/cm3；Add 60 parts of nitrile rubbers, 1 part of mistake chloro benzoyl peroxide and 0.5 part 2, tri-grades of butyl-4-methylphenols of 6-, and mix homogeneously；Then with screw extruder carry out extruding, pelletize, the operating temperature of extruder keeps 90 DEG C；Then above-mentioned pellet mould is placed on vulcanizer and makes diaphragm；Finally by diaphragm temperature be 140 DEG C, vacuum for-0.1MPa under conditions of vacuum hotpressing 20min, make the thick nitrile rubber layer sound insulation sheet material of 6mm.
With 2 parts of VTESs, 6 parts of nano silicons being carried out surface process by mass fraction, wherein the particle diameter of nano silicon is 60nm, and specific surface area is 180m2/g；Add 95 parts of ethylene-vinyl acetate copolymers, 1 part of mistake chloro benzoyl peroxide and 0.5 part 2, tri-grades of butyl-4-methylphenols of 6-, and mix homogeneously；Then with screw extruder carry out extruding, pelletize, the operating temperature of extruder keeps 90 DEG C；Then above-mentioned pellet mould is placed on vulcanizer and makes diaphragm；Finally by diaphragm temperature be 140 DEG C, vacuum for-0.1MPa under conditions of vacuum hotpressing 20min, make the thick thermoplastic resin sound insulation sheet material of 2mm.
Above-mentioned nitrile rubber layer sound insulation sheet material and thermoplastic resin sound insulation sheet material are bonded with intermediate layer Boehmeria embryo cloth glue as both sides surface layer, obtains 3-layer composite material.After testing, this 3-layer composite material oise insulation factor in the frequency range of 2000 2500Hz reaches 50.8dB, and the acoustic absorptivity in the frequency range of 1000 1500Hz reaches 0.45.
Embodiment 3
By mass fraction by 2 parts of ethylenediamine hydroxypropyl methyl dimethoxysilane, 5 parts of four acicular type zinc oxide crystal whiskers and 40 parts of vermiculite power mixing, wherein the granularity of vermiculite power is 30 mesh, and the apparent density of four acicular type zinc oxide crystal whisker is 0.3 g/cm3；Add 65 parts of nitrile rubbers, 2 parts of cumyl peroxides and 1 part 2, tri-grades of butyl-4-methylphenols of 6-, and mix homogeneously；Then with screw extruder carry out extruding, pelletize, the operating temperature of extruder keeps 100 DEG C；Then above-mentioned pellet mould is placed on vulcanizer and makes diaphragm；Finally by diaphragm temperature be 150 DEG C, vacuum for-0.1MPa under conditions of vacuum hotpressing 15min, make the thick nitrile rubber layer sound insulation sheet material of 6mm.
With 2 parts of ethylenediamine hydroxypropyl methyl dimethoxysilane, 10 parts of nano silicons being carried out surface process by mass fraction, wherein the particle diameter of nano silicon is 80nm, and specific surface area is 200m2/g；Add 100 parts of ethylene-vinyl acetate copolymers, 2 parts of cumyl peroxides and 1 part 2, tri-grades of butyl-4-methylphenols of 6-, and mix homogeneously；Then with screw extruder carry out extruding, pelletize, the operating temperature of extruder keeps 100 DEG C；Then above-mentioned pellet mould is placed on vulcanizer and makes diaphragm；Finally by diaphragm temperature be 150 DEG C, vacuum for-0.1MPa under conditions of vacuum hotpressing 15min, make the thick thermoplastic resin sound insulation sheet material of 2mm.
Above-mentioned nitrile rubber layer sound insulation sheet material and thermoplastic resin sound insulation sheet material are bonded with intermediate layer Boehmeria embryo cloth glue as both sides surface layer, obtains 3-layer composite material.After testing, this 3-layer composite material oise insulation factor in the frequency range of 2000 2500Hz reaches 46.3dB, and the acoustic absorptivity in the frequency range of 1000 1500Hz reaches 0.44.
The technical scheme provided the embodiment of the present invention above is described in detail, principle and the embodiment of the embodiment of the present invention are set forth by specific case used herein, and the explanation of above example is only applicable to help to understand the principle of the embodiment of the present invention；Simultaneously for one of ordinary skill in the art, according to the embodiment of the present invention, all will change in detailed description of the invention and range of application, in sum, this specification content should not be construed as limitation of the present invention.
Claims (10)
1. a sound absorption acoustic dampening composite, it is by up of three layers, intermediate layer is Boehmeria embryo cloth, side surface layer is nitrile rubber layer, opposite side surface layer is thermoplastic resin, both sides surface layer passes through binding agent and interlayer adhesion, is added with four acicular type zinc oxide crystal whisker, vermiculite power, coupling agent, cross-linking agent and antioxidant in nitrile rubber layer；Thermoplastic resin uses ethylene-vinyl acetate copolymer, is wherein added with nano silicon, coupling agent, cross-linking agent and antioxidant.
The most according to claim 1, absorb sound acoustic dampening composite, it is characterised in that: described nitrile rubber layer forms according to the mass fraction of 55 65 parts of nitrile rubbers, 25 parts of four acicular type zinc oxide crystal whiskers, 30 40 parts of vermiculite powers, 12 parts of coupling agents, 12 parts of cross-linking agent and 0.5 1 parts of antioxidant.
The most according to claim 1, absorb sound acoustic dampening composite, it is characterised in that: described thermoplastic resin forms according to the mass fraction of 90 100 parts of ethylene-vinyl acetate copolymers, 3 10 parts of nano silicons, 12 parts of coupling agents, 12 parts of cross-linking agent, 0.5 1 parts of antioxidant.
The most according to claim 1, absorb sound acoustic dampening composite, it is characterised in that: the apparent density of described four acicular type zinc oxide crystal whisker is 0.1 0.3 g/cm3。
The most according to claim 1, absorb sound acoustic dampening composite, it is characterised in that: the granularity of described vermiculite power is 10 30 mesh.
The most according to claim 1, absorb sound acoustic dampening composite, it is characterised in that: the coupling agent of both sides surface layer all uses aminopropyl triethoxysilane, VTES or ethylenediamine hydroxypropyl methyl dimethoxysilane.
The most according to claim 1, absorb sound acoustic dampening composite, it is characterised in that: the cross-linking agent of both sides surface layer all uses stearoyl, chloro benzoyl peroxide or cumyl peroxide.
The most according to claim 1, absorb sound acoustic dampening composite, it is characterised in that: the antioxidant of both sides surface layer all uses 2, tri-grades of butyl-4-methylphenols of 6-.
The most according to claim 1, absorb sound acoustic dampening composite, it is characterised in that: described binding agent is glue.
The most according to claim 3, absorb sound acoustic dampening composite, it is characterised in that: the particle diameter of described nano silicon is 40 80nm, and specific surface area is 150 200m2/g。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610267101.4A CN105922679A (en) | 2016-04-27 | 2016-04-27 | Sound absorbing and sound insulating composite material |
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| CN201610267101.4A CN105922679A (en) | 2016-04-27 | 2016-04-27 | Sound absorbing and sound insulating composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106543740A (en) * | 2016-10-10 | 2017-03-29 | 芜湖市鸿坤汽车零部件有限公司 | A kind of automobile excellent nitrile rubber composite damping material of sound absorbing capabilities and preparation method thereof |
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2016
- 2016-04-27 CN CN201610267101.4A patent/CN105922679A/en active Pending
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| JPH10340087A (en) * | 1997-06-09 | 1998-12-22 | Ikeda Bussan Co Ltd | Soundproofing and heat insulating member |
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| CN103897262A (en) * | 2012-12-27 | 2014-07-02 | 浙江艾迪雅科技股份有限公司 | Low cost and high efficient soundproof material and manufacturing method thereof |
| CN203895111U (en) * | 2013-12-13 | 2014-10-22 | 李巍巍 | Composite material with sound absorption and insulation structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106543740A (en) * | 2016-10-10 | 2017-03-29 | 芜湖市鸿坤汽车零部件有限公司 | A kind of automobile excellent nitrile rubber composite damping material of sound absorbing capabilities and preparation method thereof |
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Application publication date: 20160907 |