CN208111068U - A kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form - Google Patents
A kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form Download PDFInfo
- Publication number
- CN208111068U CN208111068U CN201820339107.2U CN201820339107U CN208111068U CN 208111068 U CN208111068 U CN 208111068U CN 201820339107 U CN201820339107 U CN 201820339107U CN 208111068 U CN208111068 U CN 208111068U
- Authority
- CN
- China
- Prior art keywords
- pit
- polyurethane foam
- smooth surface
- foam board
- cylindrical pit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Polyurethanes Or Polyureas (AREA)
Abstract
The utility model discloses a kind of bionic non-smooth surface polyurethane foam boards with Cylindrical Pit form, including：Substrate, and the upper surface of base plate is provided with Cylindrical Pit；The Cylindrical Pit is structure as a whole with the substrate, and material is polyurethane；The Cylindrical Pit is evenly distributed semicolumn pit and semiellipse column pit；The utility model provides a kind of bionic non-smooth surface polyurethane foam board and preparation method thereof with Cylindrical Pit form, enables polyurethane foam board in relatively thin thickness range, shows excellent sound absorbing performance, to achieve the purpose that sqouynd absorption lowering noise.
Description
Technical field
It is more particularly to a kind of with Cylindrical Pit form the utility model relates to acoustical material technical field
Bionic non-smooth surface polyurethane foam board.
Background technique
Non-smooth surface bionic theory be biology by own existence to adapt to the organism surface Non-smooth surface that environment is shown
Characteristic.Organism surface status and appearance is non-smooth surface of organism, and this characteristic that organism surface is shown is the visitor of nature
It sees and exists.Non-smooth surface bionics techniques is to solve one kind of engineering problem using Biologic nonsmoothed morphosis in nature as prototype
Scientific application technology.
With the development of the automobile industry, automobile vendor is increasingly stringenter the NVH performance requirement of automobile.Acoustics is packed good
The bad size for directly influencing internal car noise, therefore excellent acoustics packaging has active influence for the noise reduction of automobile.Mesh
The preceding research for acoustics packaging only stops at the research of smooth surface, the research for non-smooth surface acoustics packaging character
There are blank, therefore combine bionics that non-smooth surface is applied in acoustics packaging and carry out novel high-performance sound-absorbing material not only
With important learning value, and there is boundless application prospect.Currently about the special of bionic non-smooth surface noise reduction
Benefit has, and it is a kind of based on coupling bionic principle that patent announcement number is that the utility model patent of " CN103982705A " discloses
Overflow valve drops, and for the utility model when hydraulic oil flows through spool, valve body, non-smooth surface can reduce flow resistance, and reduction rubs
Noise is wiped, the noise control of the hydraulic control component suitable for various structure of relief valve forms, principle is novel, and structure is simple, drop
It makes an uproar significant effect；
But the research to non-smooth surface noise reduction is only resided in this field, for the research of sound absorption, there are vacancies；
Therefore, how to combine bionics that non-smooth surface is applied in car acpistocs packaging, provide a kind of with cylindricality
The problem of bionic non-smooth surface polyurethane foam board of concave state 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 bionic non-smooth surface polyurethane foams with Cylindrical Pit form
Foam plate can show excellent sound absorbing performance in relatively thin thickness range, to achieve the purpose that sqouynd absorption lowering noise.
To achieve the goals above, the utility model uses following technical scheme：
A kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form, including：Substrate, and the substrate
Upper surface is provided with Cylindrical Pit；The Cylindrical Pit is structure as a whole with the substrate, and material is polyurethane；The cylindricality
Pit is evenly distributed semicolumn pit and semiellipse column pit.
Through the above technical solutions, the technical effect of the utility model：Bionic, non-smooth table with Cylindrical Pit form
Face polyurethane foam board is divided into substrate and Cylindrical Pit two parts, significantly improves intermediate frequency and high frequency sound absorbing performance, greatly improves
Acoustic absorptivity, while the thickness of sound-absorbing material plate can be adjusted according to the actual situation in relatively thin range.
Preferably, in a kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form, the semicircle
The section of column pit is semicircle, and semicircle diameter is 4mm, and the adjacent semicolumn pit distance is 4mm.
Preferably, in a kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form, described half is ellipse
The section of cylinder pit be half elliptic, and half elliptic major semiaxis be 4mm, short axle 4mm, the semiellipse column pit away from
From for 4mm.
Through the above technical solutions, the technical effect of the utility model：It is that the semicircular semicolumn is recessed by section
Hole and section are the bionical non-with Cylindrical Pit form of the different shape that the semiellipse column pit of half elliptic is constituted
The structure of smooth surface polyurethane foam board can increase the contact area of incidence wave and material, and more sound waves can be made to enter
It is mapped in acoustic material, and then increases the absorptivity of sound wave, improve sound absorbing performance.
Preferably, in a kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form, the substrate
It is 30mm with Cylindrical Pit two parts overall thickness.
Preferably, in a kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form, the substrate
With 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 improve poly- when sound wave passes through non-smooth surface
The sound absorbing performance of urethane cystosepiment.
Preferably, described to have in a kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form
The bionic non-smooth surface polyurethane foam board of Cylindrical Pit form is packed by bonding method and object to be packaged.
Preferably, in a kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form, the poly- ammonia
Ester is by polyether polyol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalyst A1, silicone oil, deionized water and MDI
Composition；Its mass fraction 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.
A kind of preparation method of the bionic non-smooth surface polyurethane foam board with Cylindrical Pit form：
Polyether polyol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalysis are weighed first, in accordance with material mixture ratio
Agent A1, silicone oil and deionized water, are inverted in dixie cup, and composite blender is carried out with the mixing speed of 2000r/min
Stir 90s；Next weighs corresponding MDI and is poured into dixie cup, is stirred using material mixers with 500r/min, to paper
Cup adstante febre pours into it in mold rapidly, and mold is sealed；Mold is finally put into drying box, drying box temperature setting is
50 DEG C, after incubator is stored 2 hours, take out sample.
Preferably, in the bionic non-smooth surface polyurethane foam board preparation method a kind of with Cylindrical Pit form,
The mold is cylinder can, and the cylinder can box cover selects the mode of 3D printing according to substrate surface Cylindrical Pit shape
It is prepared, printed material selects ABS resin preparation.
It can be seen via above technical scheme that compared with prior art, the utility model, which discloses, provides one kind with column
The bionic non-smooth surface polyurethane foam board of shape concave state, the bionic non-smooth surface polyurethane with Cylindrical Pit form
Cystosepiment is divided into substrate and Cylindrical Pit two parts, significantly improves intermediate frequency and high frequency sound absorbing performance, greatly improves acoustic absorptivity,
The thickness of sound-absorbing material plate can be adjusted according to the actual situation in relatively thin range simultaneously；
By section be the semicircular semicolumn pit and section is the semiellipse column pit structure of half elliptic
At different shape the bionic non-smooth surface polyurethane foam board with Cylindrical Pit form structure, incidence can be increased
The contact area of wave and material can make more sound wave incidents into acoustic material, and then increase the absorptivity of sound wave, improve
Sound absorbing performance；When sound wave incident is to material surface, a part of sound can reflect, and another part is entered in material by hole
Portion, air and material internal hole occur relative motion and generate friction, air vibration velocity when sound wave passes through non-smooth surface
Improving can accelerate kinetic energy to be converted to frictional heat energy and then improve the sound absorbing performance of polyurethane foam board；
A kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form provided by the utility model, makes to gather
Urethane cystosepiment can show excellent sound absorbing performance in relatively thin thickness range, to achieve the purpose that sqouynd absorption lowering noise.
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 attached drawing is the axonometric drawing that semicolumn pit substrate is arranged in the utility model；
Fig. 2 attached drawing is the full sectional view that semicolumn pit substrate main view is arranged in the utility model；
Fig. 3 attached drawing is the axonometric drawing that semiellipse column pit substrate is arranged in the utility model；
Fig. 4 attached drawing is the full sectional view that semiellipse column pit substrate main view is arranged in the utility model；
Fig. 5 attached drawing is different bionic non-smooth surface polyurethane foam board sound absorbing performance correlation curves.
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 bionic non-smooth surface polyurethane foam with Cylindrical Pit form
Plate can show excellent sound absorbing performance in relatively thin thickness range, to achieve the purpose that sqouynd absorption lowering noise.
In conjunction with attached drawing 1-4, the utility model discloses a kind of poly- ammonia of the bionic non-smooth surface with Cylindrical Pit form
Ester cystosepiment, including：Substrate 1, and 1 upper surface of substrate is provided with Cylindrical Pit 2；Cylindrical Pit 2 is structure as a whole with substrate 1,
And material is polyurethane；Cylindrical Pit 2 is evenly distributed semicolumn pit 11 and semiellipse column pit 12.
In order to further optimize the above technical scheme, the section of semicolumn pit 11 is semicircle, and semicircle diameter is
4mm, adjacent semicolumn pit 11 is apart from for 4mmm.
In order to further optimize the above technical scheme, the section of semiellipse column pit 12 is half elliptic, and half elliptic
Major semiaxis is 4mm, and short axle 4mm, the distance of semiellipse column pit 12 is 4mm.
In order to further optimize the above technical scheme, substrate 1 and 2 overall thickness of Cylindrical Pit are 30mm.
In order to further optimize the above technical scheme, substrate 1 has hole.
In order to further optimize the above technical scheme, with the bionic non-smooth surface polyurethane foam of Cylindrical Pit form
Plate is packed by bonding method and object to be packaged.
Polyurethane is by polyalcohol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalyst A1, silicone oil, deionization
Water and MDI composition；Its mass fraction is than 60：40：1：1：0.12：1.8：4.8：30.
A kind of preparation method of the bionic non-smooth surface polyurethane foam board with Cylindrical Pit form：
Polyether polyol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalysis are weighed first, in accordance with material mixture ratio
Agent A1, silicone oil and deionized water, are inverted in dixie cup, and composite blender is carried out with the mixing speed of 2000r/min
Stir 90s；
Next weighs corresponding MDI and is poured into dixie cup, is stirred using material mixers with 500r/min, to paper
Cup adstante febre pours into it in mold rapidly, and mold is sealed；
Mold is finally put into drying box, drying box temperature setting is 50 DEG C, after incubator is stored 2 hours, takes out sample
Product.
In order to further optimize the above technical scheme, mold is cylinder can, and cylinder can box cover is according to substrate surface column
Shape pit shape selects the mode of 3D printing to be prepared, and printed material selects ABS resin preparation.
Embodiment 1
Manufacture and design the polyurethane foam board with the bionic, non-smooth form of semicolumn pit.
Referring to Figures 1 and 2, the non-smooth surface form of polyurethane foam board is located on matrix surface in evenly distributed
Semicolumn pit 11 formed, the section of semicolumn pit 11 is semicircle, and semicircle diameter d is 4mm, adjacent semicolumn
11 distance L of pit is 4mm.Matrix 1 is urethane raw, and for integral material with a thickness of 30mm, manufacture and design out has semicircle
For the polyurethane foam of column pit compared with the smooth surface polyurethane foam of same basis material, intermediate frequency and high frequency sound absorbing performance are bright
It is aobvious to improve, and quality reduces by 4.4%.
Embodiment 2
Manufacture and design the polyurethane foam board with the bionic, non-smooth form of semiellipse column pit.
Referring to Fig. 3 and Fig. 4, the non-smooth surface form of polyurethane foam board is located on matrix surface in evenly distributed
Semiellipse column pit 12 formed, the section of semiellipse column pit 12 is half elliptic, and major semiaxis b is 4mm, short axle a is
The distance L of 4mm, adjacent semiellipse column pit 12 are 4mm.Matrix 1 be urethane raw, integral material with a thickness of 30mm, if
Count the polyurethane foam and the smooth surface polyurethane foam phase of same basis material with semiellipse column pit manufactured
Than intermediate frequency and high frequency sound absorbing performance significantly improve, and quality reduces by 5.3%.
To sum up embodiment can be seen that the utility model positive effect obtained by following sound absorbing performance correlation curve
Fruit.
Referring to Fig. 5, Fig. 5 is the polyurethane foam board sound absorbing performance correlation curve with cylinder concave state, in 20-
In 1500Hz frequency range, the acoustic absorptivity of various polyurethane foam boards increases with the increase of frequency, and different tables
Sound-absorbing material acoustic absorptivity difference in this frequency range in face is little, wherein smooth surface reaches peak value, surface in 1250Hz
Acoustic absorptivity for semicolumn pit and the polyurethane foam board of semiellipse column concave state is reached in 1500Hz and 1550Hz respectively
To maximum value；Within the scope of 1500-3000Hz, each surface acoustic absorptivity is reduced with the increase of frequency, wherein smooth table
Face is relatively low, and the polyurethane foam board of semiellipse column concave state is relatively preferable；Within the scope of 3000-6000Hz, sound-absorbing material
Acoustic absorptivity reduces afterwards as frequency increase first increases, wherein the polyurethane foam board sound absorbing performance phase of semiellipse column concave state
To best, reach 0.972 in 5500Hz.
In conclusion the polyurethane foam board with column concave state is in low frequency and middle low frequency model compared with smooth flat
Enclose influences less in (20-1500Hz), and in medium-high frequency and high-frequency range (1500-6000Hz), sound absorption energy-absorbing has biggish
It improves, and the polyurethane foam board sound absorbing performance of semiellipse column concave state is best.
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 (6)
1. a kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form, which is characterized in that including：Substrate
(1), and the substrate (1) upper surface is provided with Cylindrical Pit (2)；The Cylindrical Pit (2) and the substrate (1) are integrated knot
Structure, and material is polyurethane；The Cylindrical Pit (2) is evenly distributed semicolumn pit (11) and semiellipse column pit
(12)。
2. a kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form according to claim 1,
It is characterized in that, the section of the semicolumn pit (11) is semicircle, and semicircle diameter is 4mm, and the adjacent semicolumn is recessed
Cheating (11) distance is 4mm.
3. a kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form according to claim 2,
It is characterized in that, the section of the semiellipse column pit (12) is half elliptic, and half elliptic major semiaxis is 4mm, and short axle is
4mm, the distance of the adjacent semiellipse column pit (12) are 4mm.
4. a kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form according to claim 3,
It is characterized in that, the substrate (1) and the Cylindrical Pit (2) overall thickness are 30mm.
5. a kind of bionic non-smooth surface polyurethane foam with Cylindrical Pit form according to claim 1-4
Foam plate, which is characterized in that the substrate (1) has hole.
6. a kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form according to claim 5,
Be characterized in that, the bionic non-smooth surface polyurethane foam board with Cylindrical Pit form by bonding method with it is to be packaged
Object is packed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820339107.2U CN208111068U (en) | 2018-03-13 | 2018-03-13 | A kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820339107.2U CN208111068U (en) | 2018-03-13 | 2018-03-13 | A kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208111068U true CN208111068U (en) | 2018-11-16 |
Family
ID=64127093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820339107.2U Active CN208111068U (en) | 2018-03-13 | 2018-03-13 | A kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208111068U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281132A (en) * | 2018-03-13 | 2018-07-13 | 吉林大学 | With Cylindrical Pit bionic non-smooth surface polyurethane foam board and preparation method |
-
2018
- 2018-03-13 CN CN201820339107.2U patent/CN208111068U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281132A (en) * | 2018-03-13 | 2018-07-13 | 吉林大学 | With Cylindrical Pit bionic non-smooth surface polyurethane foam board and preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102094922B (en) | Porous rubber material member and full-frequency range vibration acoustical property analysis method thereof | |
| CN108557043B (en) | Micro-buoyant raft array skin with functions of reducing drag and noise | |
| CN208111068U (en) | A kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form | |
| CN109584855A (en) | Honeycomb-microperforated panel composite structural design method of adjustable sound absorption frequency | |
| CN208111069U (en) | Non-smooth surface polyurethane foam board with spherical pit bionic form | |
| CN109138196B (en) | Aerogel composite sound absorption structure | |
| CN108281133A (en) | With spherical pit bionic non-smooth surface polyurethane foam board and preparation method | |
| CN108097560B (en) | Wave absorber preparation method based on three-dimensional forming and corresponding wave absorber | |
| CN108891364B (en) | Resistance-reducing noise-reducing skin with honeycomb-like structure | |
| CN102943840B (en) | Perforated constrained damping structure used for reducing vibration and insulating sound of ship | |
| CN208111067U (en) | A kind of bionic non-smooth surface polyurethane foam board with rib shape form | |
| CN108281132A (en) | With Cylindrical Pit bionic non-smooth surface polyurethane foam board and preparation method | |
| CN107578767A (en) | A kind of cavity wedge absorber complex with metallic framework | |
| CN208400484U (en) | A kind of acoustics packaging material with convex closure form | |
| CN208111066U (en) | A kind of arcuation bionic non-smooth surface polyurethane foam board | |
| CN105118497A (en) | Tube-bundle perforated panel and spring cyclic structure sound absorption apparatus | |
| CN108346420A (en) | A kind of arcuation bionic non-smooth surface polyurethane foam board and preparation method thereof | |
| CN103510342A (en) | Washing machine | |
| CN108269565A (en) | With ribbed Bionic conflguration non-smooth surface polyurethane foam board and preparation method thereof | |
| CN203821743U (en) | Sound-proof decorating plate | |
| CN206711599U (en) | A kind of cycle born of the same parents structure composite sound panel | |
| CN201679416U (en) | Sound-absorbing and ventilating window | |
| CN204880603U (en) | Machine in wind -guiding circle and air conditioning | |
| CN101625856B (en) | Preparation method of multifrequency sound absorption foam faced material | |
| CN208327883U (en) | A kind of bionic non-smooth surface polyurethane foam board based on Asio otus wing table |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |