CN205767894U - The sheet material that eptfe membrane and polyurethane foam surface recombination full frequency band absorb sound by force - Google Patents
The sheet material that eptfe membrane and polyurethane foam surface recombination full frequency band absorb sound by force Download PDFInfo
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- CN205767894U CN205767894U CN201620121383.2U CN201620121383U CN205767894U CN 205767894 U CN205767894 U CN 205767894U CN 201620121383 U CN201620121383 U CN 201620121383U CN 205767894 U CN205767894 U CN 205767894U
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Abstract
The utility model discloses the sheet material that a kind of eptfe membrane absorbs sound by force with polyurethane foam surface recombination full frequency band, including: expanded PTFE microporous film layer and polyurethane foam layer, the single or double of described polyurethane foam layer is compounded with expanded PTFE microporous film layer, being provided with tack coat between described expanded PTFE microporous film layer and polyurethane foam layer, the thickness of described expanded PTFE microporous film layer is 0.003 0.02mm.By the way, this utility model has outstanding effect in terms of each band noise pollution that harnessing project machinery produces, making people's Wonderful Job in good environment, reduce the accident that noise fatigue causes, the important new material improving construction machinery product Competition in International Trade power ensures.
Description
Technical field
This utility model relates to sound-absorbing material field, particularly relates to a kind of eptfe membrane and polyurethane foam
The sheet material that surface recombination full frequency band absorbs sound by force.
Background technology
The noise emission level of China's engineering machinery (excavator, development machine, automobile engine cabin and enclosing thereof) at present
Power there is also bigger gap with world's construction machinery production, and product is difficult to batch and enters the market of these developed regions.Therefore,
Reduce engineering machinery noise, audition health, the market of raising construction machinery product to safe driving, noise environmental protection and operator
Competitiveness is the most significant.Owing to the working condition of engineering machinery is severe, power and equipment (electromotor, hydraulic pressure, machine
Tool drive system etc.) vibration, strong vibration and noise can be produced when pretending industry.Along with large-scale construction project needs, engineering machine
Tool more and more develops towards complication, maximization and high speed direction, and its vibration and noise problem seem more prominent, construction
One of noise Main Noise Sources becoming city, mechanical noise, either to people, engineering mechanical device itself, is all extremely to have
Evil, it not only pollutes environment, affects daily life, is also possible to cause the generation of engineering accident time serious.Analyze and send out
The frequency spectrum of these noise sources such as motivation, Hydraulic Power Transmission System, cooling fan and the energy of basic, normal, high frequency range.At present in engineering one
As use microperforated panel resonance sound-absorbing structure and macromolecular material (common polyurethane foam or Sound-proof material) sqouynd absorption lowering noise, these are two years old
Kind noise reduction general, the noise of engineering machinery is still at more than 85dB, it is difficult to meet European latest noise standard limit and
GB 16710-2010 earthmoving machinery noise level limit standard-required, is unfavorable for expanding external product market.
Utility model content
This utility model is mainly solving the technical problems that provide a kind of eptfe membrane and polyurethane foam table
Face is combined the sheet material that full frequency band absorbs sound by force, it is possible to each band noise that harnessing project machinery produces pollutes so that people are well
Environment in Wonderful Job, reduce noise fatigue cause accident.
For solving above-mentioned technical problem, the technical scheme that this utility model uses is: provide a kind of e-PTFE
The sheet material that vinyl film and polyurethane foam surface recombination full frequency band absorb sound by force, including: expanded PTFE microporous film layer and
Polyurethane foam layer, the single or double of described polyurethane foam layer is compounded with expanded PTFE microporous film layer, described
Being provided with tack coat between expanded PTFE microporous film layer and polyurethane foam layer, described expanded PTFE micropore is thin
The thickness of film layer is 0.003-0.02mm.
In one preferred embodiment of this utility model, described tack coat is adhesive layer or thermal fusing powder tack coat.
In one preferred embodiment of this utility model, the thickness of polyurethane foam layer is 12-20mm.
The beneficial effects of the utility model are: each band noise pollution side that this utility model produces at harnessing project machinery
Mask has outstanding effect so that people are Wonderful Job in good environment, reduces the accident that noise fatigue causes, and improves
The important new material of construction machinery product Competition in International Trade power ensures.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, required in embodiment being described below
Accompanying drawing to be used is briefly described, it should be apparent that, the accompanying drawing in describing below is only realities more of the present utility model
Execute example, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to these accompanying drawings
Obtain other accompanying drawing, wherein:
Fig. 1 is the sheet material that this utility model eptfe membrane absorbs sound by force with polyurethane foam surface recombination full frequency band
The structural representation of one preferred embodiment；
Fig. 2 is the sheet material that this utility model eptfe membrane absorbs sound by force with polyurethane foam surface recombination full frequency band
The structural representation of another preferred embodiment；
Fig. 3 is the sheet material that this utility model eptfe membrane absorbs sound by force with polyurethane foam surface recombination full frequency band
The chart of performance.
Detailed description of the invention
Technical scheme in this utility model embodiment will be clearly and completely described below, it is clear that described
Embodiment is only a part of embodiment of the present utility model rather than whole embodiments.Based on the enforcement in this utility model
Example, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into
The scope of this utility model protection.
Refer to Fig. 1 and Fig. 2:
Embodiment 1: the sheet material that a kind of eptfe membrane and polyurethane foam surface recombination full frequency band absorb sound by force, bag
Including: expanded PTFE microporous film layer 1 and polyurethane foam layer 3, the single or double of described polyurethane foam layer 3 is combined
There is expanded PTFE microporous film layer 1.
Tack coat 2, described bonding it is provided with between described expanded PTFE microporous film layer 1 and polyurethane foam layer 3
Layer 2 is preferably adhesive as tack coat 2.
The thickness of described expanded PTFE microporous film layer 1 is 0.003mm.The thickness of polyurethane foam layer 3 is
12mm。
Polyurethane foam has superpower impact resistance shockproof properties, and there is uniform miniature cellular micropore chamber and higher inside
Repulsive force, high deformation condition still has the dimensional stability of excellence, without the plasticizer with deformation of contaminative chemistry, will not be right
Other contact material produces and pollutes, and keeps high physical property, does not has corrosive gas to produce, has general acoustically effective.
The cavity in the multilamellar abnormity aperture trickle, that interconnect that porous is constituted in this porous material, when noise waves passes
After entering these microdischarge cavities, the air molecule that its hole internal vibration by these micropore chambeies and microfibre produce bigger viscosity resistance and
Frictional force effect, makes the vibration kinetic energy of molecule be changed into heat energy and make acoustic energy the most significantly decay, significantly the noise after decay
Uniform miniature cellular micropore intracavity is had to decay into heat energy further inside the most incoming polyurethane foam of ripple.
So the combination green wood that the microporous membrane of expanded PTFE multilamellar high-performance fiber and polyurethane foam are after compound
Material shows outstanding sqouynd absorption lowering noise ability, and the experiment of this microporous membrane shows full frequency band noise noise reduction more preferably.
This utility model further relates to a kind of eptfe membrane and absorbs sound by force with polyurethane foam surface recombination full frequency band
The preparation technology of sheet material, comprise the following steps:
1) first carry out technological preparation, polyurethane foam and expanded PTFE microporous membrane are unreeled；
2) on polyurethane foam, adhesive is laid；
3) expanded PTFE microporous membrane covers on adhesive, is rolled by heating so that both fit firmly,
Cylinder heating-up temperature 120 DEG C during heating rolling, sheet material is combined translational speed 2m/min.
4) rolling after the assay was approved, i.e. prepares this sheet material.
Wherein, the preparation technology of expanded PTFE microporous membrane comprises the following steps:
1) it is that 5:1 mix with liquid adjuvants according to percentage by weight ratio by polytetrafluoroethyldispersion dispersion resin, and
Temperature is incubated maturation in the environment of being 32 DEG C；
2), after maturation, mixed product is pressed into cylindricality blank, then by rolling process, cylinder blank is laminated；
3) heated, the auxiliary agent on thin slice is sloughed, then thin slice is carried out unidirectional longitudinal stretching and broad biaxially oriented；
Wherein, heating is that hot blast temperature is heated to 100 DEG C, and thin slice passes through hot blast field speed degree 1m/min, heat time heating time
3min；
Longitudinal stretching ratio is 3 times, and broad biaxially oriented multiplying power is 10 times；
4) the thin film thermal finalization formed after drawn, carries out rolling, i.e. prepares expanded PTFE micropore thin after cooling
Film；
Wherein, thermal finalization is that in the air that the thin film formed after drawn is placed Infrared Heating, setting temperature is 350
℃。
Embodiment 2: the sheet material that a kind of eptfe membrane and polyurethane foam surface recombination full frequency band absorb sound by force, bag
Including: expanded PTFE microporous film layer 1 and polyurethane foam layer 3, the single or double of described polyurethane foam layer 3 is combined
There is expanded PTFE microporous film layer 1.
Tack coat 2, described bonding it is provided with between described expanded PTFE microporous film layer 1 and polyurethane foam layer 3
Layer 2 is preferably thermal fusing powder as tack coat 2.
The thickness of described expanded PTFE microporous film layer 1 is 0.01mm.The thickness of polyurethane foam layer 3 is
16mm。
Polyurethane foam has superpower impact resistance shockproof properties, and there is uniform miniature cellular micropore chamber and higher inside
Repulsive force, high deformation condition still has the dimensional stability of excellence, without the plasticizer with deformation of contaminative chemistry, will not be right
Other contact material produces and pollutes, and keeps high physical property, does not has corrosive gas to produce, has general acoustically effective.
The cavity in the multilamellar abnormity aperture trickle, that interconnect that porous is constituted in this porous material, when noise waves passes
After entering these microdischarge cavities, the air molecule that its hole internal vibration by these micropore chambeies and microfibre produce bigger viscosity resistance and
Frictional force effect, makes the vibration kinetic energy of molecule be changed into heat energy and make acoustic energy the most significantly decay, significantly the noise after decay
Uniform miniature cellular micropore intracavity is had to decay into heat energy further inside the most incoming polyurethane foam of ripple.
So the combination green wood that the microporous membrane of expanded PTFE multilamellar high-performance fiber and polyurethane foam are after compound
Material shows outstanding sqouynd absorption lowering noise ability, and the experiment of this microporous membrane shows full frequency band noise noise reduction more preferably.
This utility model further relates to a kind of eptfe membrane and absorbs sound by force with polyurethane foam surface recombination full frequency band
The preparation technology of sheet material, comprise the following steps:
1) first carry out technological preparation, polyurethane foam and expanded PTFE microporous membrane are unreeled；
2) on polyurethane foam, thermal fusing powder is laid；
3) expanded PTFE microporous membrane covers on thermal fusing powder, is rolled by heating so that both fit firmly,
Cylinder heating-up temperature 134 DEG C during heating rolling, sheet material is combined translational speed 3m/min.
4) rolling after the assay was approved, i.e. prepares this sheet material.
Wherein, the preparation technology of expanded PTFE microporous membrane comprises the following steps:
1) it is that 7:2 mix with liquid adjuvants according to percentage by weight ratio by polytetrafluoroethyldispersion dispersion resin, and
Temperature is incubated maturation in the environment of being 36 DEG C；
2), after maturation, mixed product is pressed into cylindricality blank, then by rolling process, cylinder blank is laminated；
3) heated, the auxiliary agent on thin slice is sloughed, then thin slice is carried out unidirectional longitudinal stretching and broad biaxially oriented；
Wherein, heating is that hot blast temperature is heated to 110 DEG C, and thin slice passes through hot blast field speed degree 2m/min, heat time heating time
5min；
Longitudinal stretching ratio is 5 times, and broad biaxially oriented multiplying power is 20 times；
4) the thin film thermal finalization formed after drawn, carries out rolling, i.e. prepares expanded PTFE micropore thin after cooling
Film；
Wherein, thermal finalization is that in the air that the thin film formed after drawn is placed Infrared Heating, setting temperature is 380
℃。
Embodiment 3: the sheet material that a kind of eptfe membrane and polyurethane foam surface recombination full frequency band absorb sound by force, bag
Including: expanded PTFE microporous film layer 1 and polyurethane foam layer 3, the single or double of described polyurethane foam layer 3 is combined
There is expanded PTFE microporous film layer 1.
Tack coat 2, described bonding it is provided with between described expanded PTFE microporous film layer 1 and polyurethane foam layer 3
Layer 2 is preferably thermal fusing powder as tack coat 2.
The thickness of described expanded PTFE microporous film layer 1 is 0.008mm, and the thickness of polyurethane foam layer 3 is
15mm。
Polyurethane foam has superpower impact resistance shockproof properties, and there is uniform miniature cellular micropore chamber and higher inside
Repulsive force, high deformation condition still has the dimensional stability of excellence, without the plasticizer with deformation of contaminative chemistry, will not be right
Other contact material produces and pollutes, and keeps high physical property, does not has corrosive gas to produce, has general acoustically effective.
The cavity in the multilamellar abnormity aperture trickle, that interconnect that porous is constituted in this porous material, when noise waves passes
After entering these microdischarge cavities, the air molecule that its hole internal vibration by these micropore chambeies and microfibre produce bigger viscosity resistance and
Frictional force effect, makes the vibration kinetic energy of molecule be changed into heat energy and make acoustic energy the most significantly decay, significantly the noise after decay
Uniform miniature cellular micropore intracavity is had to decay into heat energy further inside the most incoming polyurethane foam of ripple.
So the combination green wood that the microporous membrane of expanded PTFE multilamellar high-performance fiber and polyurethane foam are after compound
Material shows outstanding sqouynd absorption lowering noise ability, and the experiment of this microporous membrane shows full frequency band noise noise reduction more preferably.
This utility model further relates to a kind of eptfe membrane and absorbs sound by force with polyurethane foam surface recombination full frequency band
The preparation technology of sheet material, comprise the following steps:
1) first carry out technological preparation, polyurethane foam and expanded PTFE microporous membrane are unreeled；
2) on polyurethane foam, thermal fusing powder is laid；
3) expanded PTFE microporous membrane covers on thermal fusing powder, is rolled by heating so that both fit firmly,
Cylinder heating-up temperature 110 DEG C during heating rolling, sheet material is combined translational speed 4m/min.
4) rolling after the assay was approved, i.e. prepares this sheet material.
Wherein, the preparation technology of expanded PTFE microporous membrane comprises the following steps:
1) it is that 5:1 mix with liquid adjuvants according to percentage by weight ratio by polytetrafluoroethyldispersion dispersion resin, and
Temperature is incubated maturation in the environment of being 38 DEG C；
2), after maturation, mixed product is pressed into cylindricality blank, then by rolling process, cylinder blank is laminated；
3) heated, the auxiliary agent on thin slice is sloughed, then thin slice is carried out unidirectional longitudinal stretching and broad biaxially oriented；
Wherein, heating is that hot blast temperature is heated to 108 DEG C, and thin slice passes through hot blast field speed degree 3m/min, heat time heating time
6min；
Longitudinal stretching ratio is 4 times, and broad biaxially oriented multiplying power is 18 times；
4) the thin film thermal finalization formed after drawn, carries out rolling, i.e. prepares expanded PTFE micropore thin after cooling
Film；
Wherein, thermal finalization is that in the air that the thin film formed after drawn is placed Infrared Heating, setting temperature is 400
℃。
Embodiment 4: the sheet material that a kind of eptfe membrane and polyurethane foam surface recombination full frequency band absorb sound by force, bag
Including: expanded PTFE microporous film layer 1 and polyurethane foam layer 3, the single or double of described polyurethane foam layer 3 is combined
There is expanded PTFE microporous film layer 1.
Tack coat 2, described bonding it is provided with between described expanded PTFE microporous film layer 1 and polyurethane foam layer 3
Layer 2 is preferably adhesive as tack coat 2.
The thickness of described expanded PTFE microporous film layer 1 is 0.02mm.The thickness of polyurethane foam layer 3 is
20mm。
Polyurethane foam has superpower impact resistance shockproof properties, and there is uniform miniature cellular micropore chamber and higher inside
Repulsive force, high deformation condition still has the dimensional stability of excellence, without the plasticizer with deformation of contaminative chemistry, will not be right
Other contact material produces and pollutes, and keeps high physical property, does not has corrosive gas to produce, has general acoustically effective.
The cavity in the multilamellar abnormity aperture trickle, that interconnect that porous is constituted in this porous material, when noise waves passes
After entering these microdischarge cavities, the air molecule that its hole internal vibration by these micropore chambeies and microfibre produce bigger viscosity resistance and
Frictional force effect, makes the vibration kinetic energy of molecule be changed into heat energy and make acoustic energy the most significantly decay, significantly the noise after decay
Uniform miniature cellular micropore intracavity is had to decay into heat energy further inside the most incoming polyurethane foam of ripple.
So the combination green wood that the microporous membrane of expanded PTFE multilamellar high-performance fiber and polyurethane foam are after compound
Material shows outstanding sqouynd absorption lowering noise ability, and the experiment of this microporous membrane shows full frequency band noise noise reduction more preferably.
This utility model further relates to a kind of eptfe membrane and absorbs sound by force with polyurethane foam surface recombination full frequency band
The preparation technology of sheet material, comprise the following steps:
1) first carry out technological preparation, polyurethane foam and expanded PTFE microporous membrane are unreeled；
2) on polyurethane foam, adhesive is laid；
3) expanded PTFE microporous membrane covers on adhesive, is rolled by heating so that both fit firmly,
Cylinder heating-up temperature 150 DEG C during heating rolling, sheet material is combined translational speed 5m/min.
4) rolling after the assay was approved, i.e. prepares this sheet material.
Wherein, the preparation technology of expanded PTFE microporous membrane comprises the following steps:
1) it is that 5:1 mix with liquid adjuvants according to percentage by weight ratio by polytetrafluoroethyldispersion dispersion resin, and
Temperature is incubated maturation in the environment of being 40 DEG C；
2), after maturation, mixed product is pressed into cylindricality blank, then by rolling process, cylinder blank is laminated；
3) heated, the auxiliary agent on thin slice is sloughed, then thin slice is carried out unidirectional longitudinal stretching and broad biaxially oriented；
Wherein, heating is that hot blast temperature is heated to 120 DEG C, and thin slice passes through hot blast field speed degree 3m/min, heat time heating time
8min；
Longitudinal stretching ratio is 8 times, and broad biaxially oriented multiplying power is 25 times；
4) the thin film thermal finalization formed after drawn, carries out rolling, i.e. prepares expanded PTFE micropore thin after cooling
Film；
Wherein, thermal finalization is that in the air that the thin film formed after drawn is placed Infrared Heating, setting temperature is 420
℃。
In sum, the sheet material that eptfe membrane and polyurethane foam surface recombination full frequency band absorb sound by force, greatly
The noise level reducing China engineering machinery, eptfe membrane absorbs sound by force with polyurethane foam surface recombination full frequency band
Sheet material construction machinery product upgrading, this new combined material will be made will to improve construction machinery product Competition in International Trade
Power.
Development experiments method of the present utility model is: by the eptfe membrane of different-thickness with polyurethane by heat
Molten powder or adhesive are combined with each other, by GB/T 18696.2-2002(ISO 10534-2:1998) " acoustic impedance pipe is inhaled
The measurement part 2 transfer function method of sonic system number and acoustic impedance " sample preparation and measure acoustic absorptivity, find each frequency range acoustic absorptivity
Outstanding combined material, determines that the noise of each frequency range to engineering machinery has the eptfe membrane of strong sqouynd absorption lowering noise
Thickness range.(eptfe membrane of not all thickness has strong acoustical absorptivity more, especially to human ear sensitivity
High-frequency noises ripple).
Standing-wave-tube method test instrunment feature:
SKC company Z series impedance pipe is the acoustic absorptivity of sound-absorbing material under the conditions of measuring vertical incidence.Whole system by
Standing wave tube, high-end microphone, data collecting card, computer etc. form.Tester software is according to measuring the peak sound level and Gu Sheng arrived
Level value calculates acoustic absorptivity automatically, and can generate the coordinate curve of acoustic absorptivity and frequency.The frequency of instrument output signal and
Amplitude can freely set in prescribed limit.Owing to only needing a small amount of sound-absorbing material to make test specimen, so for the ginseng of sound-absorbing material
Number research and design are particularly suitable for.Z series impedance guard system " absorbs sound in impedance tube according to standard GB/T/T18696.2-2002
The measurement part 2 of coefficient harmony impedance acoustics: transfer function method " and ISO10534-2:1998, test common building sound absorption material
The acoustic absorptivity of the various materials such as material, automotive interior material, industry sound-absorbing material.Test is had relative to the standing-wave ratio method of standing wave tube
The features such as the time is short, frequency spectrum is continuous, reproducible.Especially carry out being greatly improved during investigation of materials the efficiency of contrast experiment.
Fig. 3 and Biao 1 is the sheet properties that eptfe membrane absorbs sound by force with polyurethane foam surface recombination full frequency band
Data and chart.
Table 1
Above-mentioned test parameters chart shows, the combined material that eptfe membrane is combined with polyurethane has in each frequency range
Having very high acoustic absorption coefficient, far above the requirement of Volkswagen, this sheet material acoustic absorptivity has had world lead level.
This utility model is conducive to engineering machinery vehicle lightweight, has the sqouynd absorption lowering noise ability of excellence；Newly increase weight
Amount, creates energy-conservation and environment protection standard condition for realizing the lightweight of engineering machinery；The strong resistance to ultraviolet of surface anti-pollution ability and
Weathering aging, is suitable for engineering machinery and uses in harsh climate environment, and can give full play to the effect absorbing sound by force and insulating against sound.
In terms of each band noise pollution that harnessing project machinery produces, there is outstanding effect so that people are good
Wonderful Job in environment, reduces the accident that noise fatigue causes, and improves the important of construction machinery product Competition in International Trade power
New material ensures.
The foregoing is only embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, every
Utilize equivalent structure or equivalence flow process conversion that this utility model description made, or be directly or indirectly used in other phase
The technical field closed, is the most in like manner included in scope of patent protection of the present utility model.
Claims (3)
1. the sheet material that an eptfe membrane absorbs sound by force with polyurethane foam surface recombination full frequency band, it is characterised in that
Including: expanded PTFE microporous film layer and polyurethane foam layer, the single or double of described polyurethane foam layer is combined
There is expanded PTFE microporous film layer, be provided with between described expanded PTFE microporous film layer and polyurethane foam layer
Tack coat, the thickness of described expanded PTFE microporous film layer is 0.003-0.02mm.
The sheet that eptfe membrane the most according to claim 1 and polyurethane foam surface recombination full frequency band absorb sound by force
Material, it is characterised in that described tack coat is adhesive layer or thermal fusing powder tack coat.
The sheet that eptfe membrane the most according to claim 1 and polyurethane foam surface recombination full frequency band absorb sound by force
Material, it is characterised in that the thickness of polyurethane foam layer is 12-20mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105835503A (en) * | 2016-02-15 | 2016-08-10 | 江苏泛亚微透科技股份有限公司 | Expanded polytetrafluoroethylene film-polyurethane foam surface composite full-band strong sound-absorption sheet and preparation method thereof |
| CN106827752A (en) * | 2017-02-21 | 2017-06-13 | 程艳青 | A kind of expanded PTFE flexible packing material and its manufacture method |
-
2016
- 2016-02-15 CN CN201620121383.2U patent/CN205767894U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105835503A (en) * | 2016-02-15 | 2016-08-10 | 江苏泛亚微透科技股份有限公司 | Expanded polytetrafluoroethylene film-polyurethane foam surface composite full-band strong sound-absorption sheet and preparation method thereof |
| CN106827752A (en) * | 2017-02-21 | 2017-06-13 | 程艳青 | A kind of expanded PTFE flexible packing material and its manufacture method |
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Address after: 213000 No.8 Qiancao Road, Lijia Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: JIANGSU PAN ASIAN MICROVENT TECHNOLOGY CO., LTD. Address before: 213000, No. 28-8, Sakamoto Road, Sakamoto village, Lijia Town, Wujin District, Jiangsu, Changzhou Patentee before: JIANGSU PAN ASIAN MICROVENT TECHNOLOGY CO., LTD. |