CN208111066U - A kind of arcuation bionic non-smooth surface polyurethane foam board - Google Patents
A kind of arcuation bionic non-smooth surface polyurethane foam board Download PDFInfo
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- CN208111066U CN208111066U CN201820338057.6U CN201820338057U CN208111066U CN 208111066 U CN208111066 U CN 208111066U CN 201820338057 U CN201820338057 U CN 201820338057U CN 208111066 U CN208111066 U CN 208111066U
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- smooth surface
- arcuation
- polyurethane foam
- foam board
- protrusion
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Abstract
The utility model discloses a kind of arcuation bionic non-smooth surface polyurethane foam board, protrusion and substrate；Protrusion is structure as a whole with substrate, and material is polyurethane, and protrusion and substrate overall thickness are 30mm.Protrusion includes：Cylindrical projection and cylindroid protrusion.The utility model provides a kind of arcuation bionic non-smooth surface polyurethane foam board, and acoustic absorptivity is high, and sound absorption effect is obvious.
Description
Technical field
The utility model relates to acoustical material field, more particularly to a kind of poly- ammonia of arcuation bionic non-smooth surface
Ester cystosepiment.
Background technique
With the development of the automobile industry, automobile noise problem is more and more prominent, and acoustics packaging material is high in car to reducing
Frequency and high-frequency noise can play good effect, therefore be necessary to application study of the acoustical material in automobile noise reduction
, research process and method are significantly to the control of automobile noise.At present for the research office of acoustics packaging material
It is limited to the research to smooth surface acoustics packaging material, exists for the research of non-smooth surface acoustics packaging material sound absorbing performance
Vacancy.
In nature, biology adapts to the optimal functional characteristic of optimization by tens of thousands of years environment.In recent years, with
Bionic continuous development, people are more and more deep for the research of the non-smooth surface of organism surface.Research shows that organism
Table non-smooth surface has the function of drag reduction, cleaning, noise reduction etc., in nature reed as natural sound absorption fibrous material, however
For the acoustical behavior research of non-smooth surface acoustics packaging material, there are vacancies.
Therefore, it is high how to provide a kind of acoustic absorptivity, the apparent arcuation bionic non-smooth surface polyurethane foam of sound absorption effect
The problem of foam plate is those skilled in the art's urgent need to resolve.
Utility model content
In view of this, the present invention provides a kind of arcuation bionic non-smooth surface polyurethane foam board, acoustic absorptivities
Height, sound absorption effect are obvious.
To achieve the goals above, the utility model adopts the following technical solution：
A kind of arcuation bionic non-smooth surface polyurethane foam board, protrusion and substrate；The protrusion is one with the substrate
Body structure, and material is polyurethane, the protrusion and the substrate overall thickness are 30mm.
Through the above technical solutions, the technical effect of the utility model：Arcuation bionic non-smooth surface polyurethane foam board
It is divided into protrusion and substrate, significantly improves intermediate frequency and high frequency sound absorbing performance, greatly improve acoustic absorptivity.
Preferably, in a kind of above-mentioned arcuation bionic non-smooth surface polyurethane foam board, the protrusion includes：Cylinder
Protrusion and cylindroid protrusion.
Through the above technical solutions, the technical effect of the utility model：The non-smooth surface of protrusion is arranged to cylindrical projection
It is designed with cylindroid protrusion according to reed, significantly improves intermediate frequency and high frequency sound absorbing performance, greatly improve acoustic absorptivity.
Preferably, in a kind of above-mentioned arcuation bionic non-smooth surface polyurethane foam board, the cylindrical projection is cut
Face is semicircle；The semicircle diameter is 2-4mm, and the adjacent cylindrical projection distance is 4-6mm.
Preferably, in a kind of above-mentioned arcuation bionic non-smooth surface polyurethane foam board, the cylindroid protrusion
Section is half elliptic；The semiellipse major semiaxis is 3-5mm, short axle 2-4mm, and the adjacent cylindroid protrusion distance is
4-6mm。
Through the above technical solutions, the technical effect of the utility model：It is made of respectively cylindrical projection and cylindroid protrusion
Different shape arcuation bionic non-smooth surface polyurethane foam board structure increase incidence wave and material contact area, energy
Enough make more sound wave incidents into acoustic material, and then increase the absorptivity of sound wave, improves sound absorbing performance.
Preferably, in a kind of above-mentioned arcuation bionic non-smooth surface polyurethane foam board, the cylindrical projection and institute
State the longitudinal parallelly distribute on of cylindroid protrusion.
Preferably, in a kind of above-mentioned arcuation bionic non-smooth surface polyurethane foam board, the protrusion and the base
Plate all has hole.
Through the above technical solutions, the technical effect of the utility model：When sound wave incident is to material surface, a part of sound
It can reflect, another part enters material internal by hole, and air occurs relative motion generation with material internal hole and rubs
It wipes, the raising of air vibration velocity can accelerate kinetic energy to be converted to frictional heat energy and then raising sound when sound wave passes through non-smooth surface
Learn the sound absorbing performance of packaging material.
Preferably, in a kind of above-mentioned arcuation bionic non-smooth surface polyurethane foam board, the bionical non-light of arcuation
Sliding surface polyurethane foam board is packed by bonding method and object to be packaged.
Preferably, in a kind of above-mentioned arcuation bionic non-smooth surface polyurethane foam board, the polyurethane is by polyethers
Polyalcohol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalyst A1, silicone oil, deionized water and MDI composition；Its matter
Measure score ratio 55-63：35-43：0.9-1.1：0.9-1.1： 0.1-0.12：1.8-2.0：4.5-5.0：30-35.
Preferably, in a kind of preparation method of above-mentioned arcuation bionic non-smooth surface polyurethane foam board, first, in accordance with
Material mixture ratio weigh polyether polyol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalyst A1, silicone oil and go from
Sub- water, is inverted in dixie cup, and composite blender is stirred 90s with the mixing speed of 2000r/min；Secondly claim
It takes corresponding MDI and is poured into dixie cup, be stirred using blender with 500r/min, fall it rapidly to dixie cup adstante febre
Enter in mold, and mold is sealed；Mold is finally put into drying box, drying box temperature setting is 50 DEG C, is stored in incubator
After 2 hours, sample is taken out.
It can be seen via above technical scheme that compared with prior art, the utility model discloses that provide a kind of arcuation imitative
Raw non-smooth surface polyurethane foam board, acoustic absorptivity is high, and sound absorption effect is obvious.Firstly, the poly- ammonia of arcuation bionic non-smooth surface
The structure of ester cystosepiment increases the contact area of incidence wave and material, and more sound wave incidents can be made into acoustic material, into
And increase the absorptivity of sound wave, improve sound absorbing performance.Secondly, a part of sound can occur instead when sound wave incident is to material surface
It penetrates, another part enters material internal by hole, and air and material internal hole occur relative motion and generate friction, sound wave warp
The raising of air vibration velocity can accelerate kinetic energy to be converted to frictional heat energy and then improve acoustics packing timber when crossing non-smooth surface
The sound absorbing performance of material.Finally, the non-smooth surface of arcuation bionic non-smooth surface polyurethane foam board changes the flow resistivity of material,
So as to cause the change of acoustic absorptivity, with the reduction of flow resistivity, the acoustic absorptivity of sound-absorbing material is further increased.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the arcuation bionic non-smooth surface polyurethane foam board axonometric drawing of the cylindrical projection of the utility model；
Fig. 2 is the complete section of the arcuation bionic non-smooth surface polyurethane foam board side view of the cylindrical projection of the utility model
View
Fig. 3 is the arcuation bionic non-smooth surface polyurethane foam board axonometric drawing of the cylindroid protrusion of the utility model；
Fig. 4 is the complete of the arcuation bionic non-smooth surface polyurethane foam board side view of the cylindroid protrusion of the utility model
Cross-sectional view；
Fig. 5 is arcuation bionic non-smooth surface polyurethane foam board sound absorbing performance correlation curve.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model embodiment discloses a kind of arcuation bionic non-smooth surface polyurethane foam board, and acoustic absorptivity is high,
Sound absorption effect is obvious.
A kind of arcuation bionic non-smooth surface polyurethane foam board, protrusion 1 and substrate 2；Protrusion 1 is integrated knot with substrate 2
Structure, and material is polyurethane, protrusion 1 and 2 overall thickness of substrate are 30mm.
In order to further optimize the above technical scheme, protrusion 1 includes：Cylindrical projection 11 and cylindroid protrusion 12.
In order to further optimize the above technical scheme, the section of cylindrical projection 11 is semicircle；Semicircle diameter is 2-
4mm, 11 distance of adjacent column protrusion is 4-6mm.
In order to further optimize the above technical scheme, the section of cylindroid protrusion 12 is half elliptic；Semiellipse is long by half
Axis is 3-5mm, and short axle 2-4mm, 12 distance of adjacent ellipses column protrusion is 4-6mm.
In order to further optimize the above technical scheme, cylindrical projection 11 and the longitudinal parallelly distribute on of cylindroid protrusion 12.
In order to further optimize the above technical scheme, protrusion 1 and substrate 2 all have hole.
In order to further optimize the above technical scheme, arcuation bionic non-smooth surface polyurethane foam board passes through bonding method
It is packed with object to be packaged.
In order to further optimize the above technical scheme, polyurethane is by polyether polyol 330N, polyalcohol 3630, catalyst
A33, triethanolamine, catalyst A1, silicone oil, deionized water and MDI composition；Its mass fraction is than 60：40：1：1：0.12：1.8：
4.8：30.
In order to further optimize the above technical scheme, polyether polyol 330N, polyalcohol are weighed first, in accordance with material mixture ratio
3630, catalyst A33, triethanolamine, catalyst A1, silicone oil and deionized water, are inverted in dixie cup, composite stirring
Machine is stirred 90s with the mixing speed of 2000r/min；Next weighs corresponding MDI and is poured into dixie cup, is stirred using material
It mixes machine to be stirred with 500r/min, pour into it in mold rapidly to dixie cup adstante febre, and mold is sealed；Finally by mold
It is put into drying box, drying box temperature setting is 50 DEG C, after incubator is stored 2 hours, takes out sample.
Embodiment 1
Manufacture and design the arcuation bionic non-smooth surface polyurethane foam board with cylindrical projection.
Referring to Figures 1 and 2, the arcuation bionic non-smooth surface polyurethane foam board upper surface of cylindrical projection is uniformly distributed half
The section of cylindrical projection 11 is semicircle；Semicircle diameter is 3mm, and 11 distance L of adjacent column protrusion is 5mm.Cylindrical projection
Arcuation bionic non-smooth surface polyurethane foam board is polyurethane stock material, and cylindrical projection 11 and 2 overall thickness of substrate are 30mm, if
The cylindrical projection polyurethane foam manufactured is counted compared with the smooth surface polyurethane foam of same matrix, intermediate frequency and high frequency are inhaled
Acoustic performance significantly improves, and quality reduces by 5%.
Embodiment 2
Manufacture and design the arcuation bionic non-smooth surface polyurethane foam board with cylindroid protrusion.
Referring to Fig. 4 and Fig. 3, the arcuation bionic non-smooth surface polyurethane foam board of cylindroid protrusion is on matrix surface
It is uniformly distributed cylindroid protrusion 12；The section of cylindroid protrusion is half elliptic；Semiellipse major semiaxis a is 4mm, and short axle b is
3mm, 12 distance L of adjacent ellipses column protrusion are 5mm.The arcuation bionic non-smooth surface polyurethane foam board of cylindroid protrusion is poly-
Urethane material, cylindroid protrusion 12 and 2 overall thickness of substrate are 30mm, the convex closure polyurethane foam for manufacturing and designing out and same base
The smooth surface polyurethane foam of body is compared, and intermediate frequency and high frequency sound absorbing performance significantly improve, and quality reduces by 8%.
To sum up embodiment can be seen that the utility model positive effect obtained by following sound absorbing performance correlation curve
Fruit.
It is that different bionic non-smooth surface acoustics pack sound absorbing performance correlation curve referring to Fig. 5, Fig. 5, passes through correlation curve
It learns, compared with smooth surface, the sound absorbing performance of arcuation bionic non-smooth surface polyurethane foam board is in intermediate frequency and high frequency
(1000-6000Hz) has obtained raising by a relatively large margin, and wherein the sound absorbing performance of cylindroid surfacing is relatively best,
1200Hz reaches 0.985.
It is the number for reducing test as far as possible in view of actual conditions, the horizontal orthogonal arrage of four factor of this experimental selection three,
As shown in table 1.
Table 1
Numerical value in table 2 is level and average sound absorption coefficient corresponding to each factor.
Table 2
Table 3 is each factor signal-to-noise ratio data, and signal-to-noise ratio is bigger, and the influence for illustrating the factor to acoustic absorptivity is bigger, according to table
Lattice can learn A2B1C2D2 combination sound absorbing performance it is best, deionized water, triethanolamine, silicone oil and catalyst A33 number
Respectively 4.8,1,1.8 and 1.
Table 3
| Symbol | Factor | Level 1 | Level 2 | Level 3 |
| A | Deionized water | -5.94 | -5.87 | -5.92 |
| B | Triethanolamine | -5.84 | -5.88 | -5.91 |
| C | Silicone oil | -5.90 | -5.86 | -5.88 |
| D | A33 | -5.95 | -5.92 | -5.94 |
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (7)
1. a kind of arcuation bionic non-smooth surface polyurethane foam board, which is characterized in that including：Substrate (2), and the substrate
(2) upper surface is provided with raised (1)；The protrusion (1) is structure as a whole with the substrate (2), and material is polyurethane, described
Raised (1) and the substrate (2) overall thickness are 30mm.
2. a kind of arcuation bionic non-smooth surface polyurethane foam board according to claim 1, which is characterized in that described convex
Playing (1) includes：Cylindrical projection (11) and cylindroid are raised (12).
3. a kind of arcuation bionic non-smooth surface polyurethane foam board according to claim 2, which is characterized in that the circle
The section of column protrusion (11) is semicircle；The semicircle diameter is 2-4mm, and adjacent cylindrical projection (11) distance is 4-
6mm。
4. a kind of arcuation bionic non-smooth surface polyurethane foam board according to claim 2, which is characterized in that described ellipse
The section of cylindrical projection (12) is half elliptic；The semiellipse major semiaxis is 3-5mm, short axle 2-4mm, adjacent described ellipse
Cylindrical projection (12) distance is 4-6mm.
5. a kind of arcuation bionic non-smooth surface polyurethane foam board according to claim 2, which is characterized in that the circle
Column protrusion (11) and the longitudinal parallelly distribute on of the cylindroid raised (12).
6. a kind of arcuation bionic non-smooth surface polyurethane foam board according to claim 1-5, feature exist
In the protrusion (1) and the substrate (2) all have hole.
7. a kind of arcuation bionic non-smooth surface polyurethane foam board according to claim 1-5, feature exist
In the arcuation bionic non-smooth surface polyurethane foam board is packed by bonding method and object to be packaged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820338057.6U CN208111066U (en) | 2018-03-13 | 2018-03-13 | A kind of arcuation bionic non-smooth surface polyurethane foam board |
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| CN201820338057.6U CN208111066U (en) | 2018-03-13 | 2018-03-13 | A kind of arcuation bionic non-smooth surface polyurethane foam board |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108346420A (en) * | 2018-03-13 | 2018-07-31 | 吉林大学 | A kind of arcuation bionic non-smooth surface polyurethane foam board and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108346420A (en) * | 2018-03-13 | 2018-07-31 | 吉林大学 | A kind of arcuation bionic non-smooth surface polyurethane foam board and preparation method thereof |
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