CN108281132A - With Cylindrical Pit bionic non-smooth surface polyurethane foam board and preparation method - Google Patents
With Cylindrical Pit bionic non-smooth surface polyurethane foam board and preparation method Download PDFInfo
- Publication number
- CN108281132A CN108281132A CN201810203799.2A CN201810203799A CN108281132A CN 108281132 A CN108281132 A CN 108281132A CN 201810203799 A CN201810203799 A CN 201810203799A CN 108281132 A CN108281132 A CN 108281132A
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- Prior art keywords
- pit
- polyurethane foam
- smooth surface
- cylindrical pit
- cylindrical
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- 229920005830 Polyurethane Foam Polymers 0.000 title claims abstract description 55
- 239000011496 polyurethane foam Substances 0.000 title claims abstract description 55
- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000004814 polyurethane Substances 0.000 claims abstract description 8
- 229920002635 polyurethane Polymers 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 8
- 229920002545 silicone oil Polymers 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 150000005846 sugar alcohols Polymers 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 5
- 229920000570 polyether Polymers 0.000 claims description 5
- 229920005862 polyol Polymers 0.000 claims description 5
- 150000003077 polyols Chemical class 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 4
- 238000010146 3D printing Methods 0.000 claims description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 3
- 238000006555 catalytic reaction Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 239000011358 absorbing material Substances 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 3
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000001968 nicotinic acid Nutrition 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000012814 acoustic material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 poly- ammonia Ester Chemical class 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
- C08G18/3278—Hydroxyamines containing at least three hydroxy groups
- C08G18/3281—Hydroxyamines containing at least three hydroxy groups containing three hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6688—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3271
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention 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 present invention 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 bionical with Cylindrical Pit form the present invention relates to acoustical material technical field
Non-smooth surface polyurethane foam board and preparation method thereof.
Background technology
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 auto industry, automobile vendor is increasingly stringenter the NVH performance requirements 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
Profit has, and patent announcement number discloses a kind of excessive based on the drop for coupling bionic principle for the patent of invention of " CN103982705A "
Valve is flowed, when hydraulic oil flows through spool, valve body, non-smooth surface can reduce flow resistance for the invention, reduce frictional noise, fit
The noise abatement of hydraulic control component for various structure of relief valve forms, principle is novel, simple in structure, and noise reduction is aobvious
It writes；
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
Bionic non-smooth surface polyurethane foam board of concave state and preparation method thereof is asking for those skilled in the art's urgent need to resolve
Topic.
Invention content
In view of this, the present invention provides a kind of bionic non-smooth surface polyurethane foam boards with Cylindrical Pit form
And preparation method thereof, excellent sound absorbing performance can be shown in relatively thin thickness range, to reach the mesh of sqouynd absorption lowering noise
's.
To achieve the goals above, the present invention 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 technique effect of the present invention：Bionic non-smooth surface with Cylindrical Pit form is poly-
Urethane cystosepiment is divided into substrate and Cylindrical Pit two parts, so that intermediate frequency and high frequency sound absorbing performance is significantly improved, greatly improves sound absorption
Coefficient, while the thickness of sound-absorbing material plate can be adjusted in relatively thin range according to actual conditions.
Preferably, a kind of in the bionic non-smooth surface polyurethane foam board of Cylindrical Pit form, the semicircle
The section of column pit is semicircle, and semicircle a diameter of 4mm, and the adjacent semicolumn pit distance is 4mm.
Preferably, a kind of in the bionic non-smooth surface polyurethane foam board of 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 technique effect of the present invention：By section be the semicircular semicolumn pit and
Section is the bionic, non-smooth with Cylindrical Pit form for the different shape that the semiellipse column pit of half elliptic is constituted
The structure of surface polyurethane foam board can increase the contact area of incidence wave and material, and more sound wave incidents can be made to arrive
In acoustic material, and then increase the absorptivity of sound wave, improves sound absorbing performance.
Preferably, a kind of in the bionic non-smooth surface polyurethane foam board of Cylindrical Pit form, the substrate
It is 30mm with Cylindrical Pit two parts overall thickness.
Preferably, a kind of in the bionic non-smooth surface polyurethane foam board of Cylindrical Pit form, the substrate
With hole.
Through the above technical solutions, the technique effect of the present invention：When sound wave incident is to material surface, a part of acoustic energy hair
Raw reflection, another part enter material internal by hole, and air occurs relative motion with material internal hole and generates friction, sound
The raising of air vibration velocity can accelerate kinetic energy to be converted to frictional heat energy and then improve polyurethane when wave passes through non-smooth surface
The sound absorbing performance of cystosepiment.
Preferably, described to have a kind of in the bionic non-smooth surface polyurethane foam board of 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, a kind of in the bionic non-smooth surface polyurethane foam board of 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 with 500r/min using material mixers, waits for 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 a kind of bionic non-smooth surface polyurethane foam board preparation method 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 to prepare.
It can be seen via above technical scheme that compared with prior art, the present disclosure provides one kind to have cylindricality recessed
The bionic non-smooth surface polyurethane foam board and preparation method thereof for cheating form, the bionic, non-smooth table with Cylindrical Pit form
Face polyurethane foam board is divided into substrate and Cylindrical Pit two parts, so that intermediate frequency and high frequency sound absorbing performance is significantly improved, greatly improves
Acoustic absorptivity, while the thickness of sound-absorbing material plate can be adjusted in relatively thin range according to actual conditions；
The semiellipse column pit structure that by section be the semicircular semicolumn pit and section is 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 in more sound wave incidents to 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 acoustic energy reflects, and another part is entered by hole in material
Portion, air occur relative motion with material internal hole 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 and its preparation with Cylindrical Pit form provided by the invention
Method enables polyurethane foam board in relatively thin thickness range, shows excellent sound absorbing performance, to reach sound absorption drop
The purpose made an uproar.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 attached drawings are the axonometric drawing of present invention setting semicolumn pit substrate；
Fig. 2 attached drawings are the full sectional view of present invention setting semicolumn pit substrate front view；
Fig. 3 attached drawings are the axonometric drawing of present invention setting semiellipse column pit substrate；
Fig. 4 attached drawings are the full sectional view of present invention setting semiellipse column pit substrate front view；
Fig. 5 attached drawings are different bionic non-smooth surface polyurethane foam board sound absorbing performance correlation curves.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form and
Preparation method can show excellent sound absorbing performance, to reach the mesh of sqouynd absorption lowering noise in relatively thin thickness range
's.
In conjunction with attached drawing 1-4, the invention discloses a kind of bionic non-smooth surface polyurethane foams with Cylindrical Pit form
Foam plate, 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
Matter is polyurethane；Cylindrical Pit 2 is evenly distributed semicolumn pit 11 and semiellipse column pit 12.
In order to advanced optimize above-mentioned technical proposal, the section of semicolumn pit 11 is semicircle, and semicircle a diameter of
4mm, adjacent semicolumn pit 11 is apart from for 4mmm.
In order to advanced optimize above-mentioned technical proposal, the section of semiellipse column pit 12 is half elliptic, and half elliptic
Major semiaxis is 4mm, and the distance of short axle 4mm, semiellipse column pit 12 are 4mm.
In order to advanced optimize above-mentioned technical proposal, substrate 1 and 2 overall thickness of Cylindrical Pit are 30mm.
In order to advanced optimize above-mentioned technical proposal, substrate 1 has hole.
In order to advanced optimize above-mentioned technical proposal, the bionic non-smooth surface polyurethane foam with 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 compositions；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 with 500r/min using material mixers, waits for 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 advanced optimize above-mentioned technical proposal, 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 to prepare.
Embodiment 1
Manufacture and design the polyurethane foam board of the bionic, non-smooth form with 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 integral material thickness is 30mm, and manufacture and design out has half
The polyurethane foam of cylinder pit is compared with the smooth surface polyurethane foam of same basis material, intermediate frequency and high frequency sound absorbing performance
It significantly improves, and quality reduces by 4.4%.
Embodiment 2
Manufacture and design the polyurethane foam board of the bionic, non-smooth form with semiellipse column pit.
With reference 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 is urethane raw, and integral material thickness is 30mm, if
Count the smooth surface polyurethane foam phase of the polyurethane foam and 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 good effect that the present invention is obtained by following sound absorbing performance correlation curve.
With reference to Fig. 5, Fig. 5 is the polyurethane foam board sound absorbing performance correlation curve with cylinder concave state, in 20-
In 1500Hz frequency ranges, 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 compared with smooth flat, the polyurethane foam board with column concave state is in low frequency and middle low frequency model
Enclose influences less in (20-1500Hz), and in medium-high frequency and high-frequency range (1500-6000Hz), sound absorption energy-absorbing has larger
It improves, and the polyurethane foam board sound absorbing performance of semiellipse column concave state is best.
It is the number for reducing experiment 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 the 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 is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (9)
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) is integrated knot with the substrate (1)
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 a diameter of 4mm, the adjacent semicolumn are recessed
It is 4mm to cheat (11) distance.
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
The distance of 4mm, 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. according to a kind of bionic non-smooth surface polyurethane foam with Cylindrical Pit form of claim 1-4 any one of them
Foam plate, which is characterized in that the substrate (1) has hole.
6. according to a kind of bionic non-smooth surface polyurethane foam with Cylindrical Pit form of claim 1-5 any one of them
Foam plate, which is characterized in that the bionic non-smooth surface polyurethane foam board with Cylindrical Pit form passes through bonding method
It is packed with object to be packaged.
7. according to a kind of bionic non-smooth surface polyurethane foam with Cylindrical Pit form of claim 1-5 any one of them
Foam plate, which is characterized in that the polyurethane is by polyether polyol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalysis
Agent A1, silicone oil, deionized water and MDI compositions；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.
8. a kind of preparation method of the bionic non-smooth surface polyurethane foam board with Cylindrical Pit form, which is characterized in that
Specific steps include：
Polyether polyol 330N, polyalcohol 3630, catalyst A33, triethanolamine, catalyst are weighed first, in accordance with material mixture ratio
A1, silicone oil and deionized water, are inverted in dixie cup, and composite blender is stirred with the mixing speed of 2000r/min
Mix 90s；
Next weighs corresponding MDI and is poured into dixie cup, is stirred with 500r/min using material mixers, waits for that dixie cup is sent out
It is poured into mold rapidly when hot, 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.
9. a kind of system of bionic non-smooth surface polyurethane foam board with Cylindrical Pit form according to claim 8
Preparation Method, which is characterized in that the mold is cylinder can, and the cylinder can box cover is according to substrate surface Cylindrical Pit shape
Shape selects the mode of 3D printing to prepare, and printed material selects ABS resin to prepare.
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| CN201810203799.2A CN108281132A (en) | 2018-03-13 | 2018-03-13 | With Cylindrical Pit bionic non-smooth surface polyurethane foam board and preparation method |
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Cited By (1)
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Application publication date: 20180713 |