CN109825951A - A kind of acoustical cotton and preparation method thereof - Google Patents
A kind of acoustical cotton and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of acoustical cottons, it is related to sound-absorbing material field, its key points of the technical solution are that according to the mass fraction, including following component: PLA50~66 part, 2~4 parts of heat stabilizer, 7~8 parts of pearl powder, 2~4 parts of surfactant, 3~5 parts of carbamide, 6~10 parts of diatomite, 3~5 parts of lubricant and 1~2 part of anti ultraviolet agent.By using above-mentioned technical proposal, diatomite first just has good bactericidal effect originally, can effectively inhibit microorganism and be bred on acoustical cotton, to also be advantageous for improving the service life of acoustical cotton.There are a large amount of micropores inside it simultaneously, so as to absorb partial noise, enhance the noise reduction effect of acoustical cotton.
Description
Technical field
The present invention relates to noise reduction field, in particular to a kind of acoustical cotton and preparation method thereof.
Background technique
It with the level of urbanization constantly promotes, urban population is also being constantly increasing, and certainly will also can during this
A large amount of noise is generated, and these noises often will have a direct impact on the physical and mental health and the raising of quality of life of people.For a long time
In noise circumstance, hearing loss can be caused possibly even to induce some diseases.For this purpose, such as will be far from noise, our energy
What is accomplished is exactly sound insulation and sound-absorbing.
And high-frequency noises vibrational energy generated in life can be converted to the fibre of the fine-denier inside acoustical cotton by acoustical cotton
The kinetic energy of dimension, and be converted to thermal energy and disappear, to reach the function of absorbing sound and lowering noise, thus widely it is employed for building, electricity
The industries such as device, automobile, machinery.
Wherein, as in electric appliance, automobile and machinery field, position used in acoustical cotton generally can all generate higher temperature
Degree, and the main material of existing part high-efficiency sound-absorbing cotton is high-molecular organic material, thus to the resistant to heat aging of acoustical cotton
Performance is a kind of greatly test, thus it is necessary to develop the acoustical cotton with stronger heat aging property.
Summary of the invention
The object of the present invention is to provide a kind of acoustical cottons, and not only sound-absorbing effect is good, while also having preferably heat-resisting
Ageing properties, while preparation method also relatively simple suitable large-scale production.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of acoustical cotton, which is characterized in that according to the mass fraction, including following component:
50~66 parts of PLA
2~4 parts of heat stabilizer
7~8 parts of pearl powder
2~4 parts of surfactant
3~5 parts of carbamide
6~10 parts of diatomite
3~5 parts of lubricant
1~2 part of anti ultraviolet agent.
By using above-mentioned technical proposal, diatomite first just has good bactericidal effect originally, can be effectively
Microorganism is inhibited to be bred on acoustical cotton, to also be advantageous for improving the service life of acoustical cotton.It is deposited inside it simultaneously
There is a large amount of micropore, so as to absorb partial noise, is enhancing the noise reduction effect of acoustical cotton.
Secondly, the addition of heat stabilizer, can effectively enhance the heat resistance of PLA etc., inhaled to be also beneficial to improve
The service life of sound cotton.
Preferably, heat stabilizer is iodized salt.
Preferably, the iodized salt is cuprous iodide or lithium iodide.
By using above-mentioned technical proposal, selects cuprous iodide and lithium iodide as heat stabilizer, PLA can be penetrated into
In material, especially lithium iodide, lithium ion can there are mating reactions between the carbonyl in PLA, produce similar network
Structure, hinder the movement of PLA strand and corresponding free radical, thus make polymer molecular chain when being thermally decomposed than complete
Free strand need to overcome bigger energy barrier, thus, promote thermoplastic elastomer (TPE) that there is higher thermal decomposition temperature.
Preferably, the pearl powder is by passing through the mixed enzyme containing alkali protease, papain and trypsase
Treated that pearl is ground for liquid.
By using above-mentioned technical proposal, a large amount of calcium carbonate is contained first in pearl powder, helps to enhance acoustical cotton
Molding effect.Meanwhile by above-mentioned three kinds of enzyme solutions treated pearl powder, the performance of original pearl powder is not only remained, together
When also released chitin in pearl powder.And chitin inherently has stronger antibiotic and sterilizing performance, so, at this time
Pearl powder is conducive to that the pathogens such as Escherichia coli and mould is inhibited to breed on sound-absorbing cotton material again.Also, chitin have compared with
Strong year viscosity, the adhesion firmness that can be further ensured that between each component, to improve thermoplastic elastomer (TPE) resistance to mechanical
The performance of damage.
Preferably, the partial size D50 of the pearl powder is less than 5 μm.
By using above-mentioned technical proposal, the particle of pearl powder is thinner, it can be homogeneously dispersed in other components in this way
In, and also ensure the mobility of mixture under molten condition.
Preferably, the surfactant is the mixing of neopelex and fatty acid methyl ester APEO
Object, and the mass ratio of the two is 1:0.7~1.3.
Simultaneously as fatty acid radical ion is had in fatty acid methyl ester APEO, during mixer mixing,
Fatty acid radical ion can generate fatty acid calcium sediment, packet with Ca2+, CaHCO3+, CaOH+ plasma reaction in pearl powder
Pearl powder particle surface is overlayed on, also, the alkyl in fatty acid calcium makes pearl powder surface nature become oleophylic by hydrophilic, meanwhile,
The caking property of this fatty acid calcium is also relatively strong, so that the pearl powder for being located at acoustical cotton fiber surface is capable of forming one of protective film,
Play the role of barrier protection for sound-absorbing cotton fiber, is contacted to reduce sound-absorbing cotton fiber with the direct of extraneous erosion, thus
Reduce the probability being corroded.
Furthermore neopelex and carbamide can act synergistically, when insect is when biting acoustical cotton, carbon
Amide and neopelex will be drawn into vivo by insect, and at this moment carbamide will destroy insect body wall chitin,
And neopelex can dissolve body wall wax coat, and be attached to and form a waterproof and air-locked tunic above,
To can also make insect air-hole blockage and death by suffocation, to also just reduce destruction of the insect to acoustical cotton.
Preferably, the lubricant is TAF.
By using above-mentioned technical proposal, TAF can not only enhance the greasy property between each raw material, so that in production
It can be sufficiently mixed between each raw material in the process.Meanwhile also having and the surface portion polar groups such as diatomite, pearl powder
The polar group structure combined.For entire compound system, TAF can also promote between diatomite, pearl powder and PET
Similar anchoring node is formd, improves the bond state of diatomite, coral powder and PET, and then improve diatomite, coral powder
Dispersibility in the mixture.
Preferably, the anti ultraviolet agent is 2-(2 '-hydroxyl -3 ', 5 '-two tertiary phenyl) -5- chlorination benzotriazole.
By using above-mentioned technical proposal, 2-(2 '-hydroxyl -3 ', 5 '-two tertiary phenyl) -5- chlorination benzotriazole energy is strongly
Absorbing wavelength is the ultraviolet light of 270~380nm, and chemical stability is good, and volatility is minimum.Also, it also has excellent heat-resisting
Sublimability, washing fastness, resistance to gas fadedness and mechanical performance retentivity.
A kind of preparation method of acoustical cotton comprising following steps:
Melting mixing is carried out in mixer Step 1: 50~66 parts of PLA are first put into；
Step 2: 2~4 parts of surfactants, 6~10 parts of diatomite, 3~5 parts of lubricants and 7~8 parts of pearl powders are added to
In the mixer of step 1, it is sufficiently mixed；
Step 3: 2~4 parts of heat stabilizers, 3~5 parts of carbamides and 1~2 part of anti ultraviolet agent to be added to the mixer of step 3
In, it is sufficiently mixed, obtains mixed melting body；
Step 4: mixed melting body to be made up to the acoustical cotton finished product of non-woven fabric type of nozzle spinneret.
Preferably, nozzle needs to carry out under nitrogen protection in spinning process in step 4.
By using above-mentioned technical proposal, using the protection of nitrogen, such mixed melting body when being come out by spinneret,
The probability being oxidized can be reduced, to also just improve the quality of acoustical cotton.
In conclusion the invention has the following advantages:
1, heat stabilizer, preferably lithium iodide are added, the thermal stability of acoustical cotton can be effectively improved；
2, pearl powder can improve the shaping efficiency of acoustical cotton after enzyme treated, and have good antibacterial characteristics；
3, the synergistic effect of neopelex and carbamide can effectively improve the insect resistant effect of acoustical cotton.
Detailed description of the invention
Fig. 1 is a kind of preparation technology flow chart of acoustical cotton.
Specific embodiment
Below in conjunction with attached drawing 1, invention is further described in detail.
Embodiment one:
A kind of preparation method of acoustical cotton, includes the following steps:
Step 1: 50KgPLA is first put into mixer, and melted with the stirring of the revolving speed of 100rpm；
Step 2: 2Kg surfactant, 6Kg diatomite, 3Kg lubricant and 7Kg pearl powder to be added to the mixer of step 1
In, progress is sufficiently mixed with 100rpm revolving speed；
Step 3: 2Kg heat stabilizer, 3Kg carbamide and 1Kg anti ultraviolet agent are added in the mixer of step 2, still keep
100rpm revolving speed is sufficiently mixed, and mixed melting body is obtained；
Step 4: mixed melting body is passed through the acoustical cotton finished product that non-woven fabric type is made in nozzle spinneret under nitrogen protection.
Secondly, mixture of the surfactant for neopelex and fatty acid methyl ester APEO, and two
The mass ratio of person is 1:0.7, and lubricant TAF, heat stabilizer is cuprous iodide, anti ultraviolet agent 2-(2 '-hydroxyl -3 ', 5 ' -
Two tertiary phenyl) -5- chlorination benzotriazole.
Furthermore the preparation method of coral powder: first preparing the sodium sulfite buffer solution that 50ml pH is 8.0, with 1ml song
It draws to lead to and is used as surfactant, and use the combination of alkali protease, papain and trypsase that mass ratio is 1:1:1
Enzyme 5g is catalyzed；By sodium sulfite buffer solution, Qula is logical and group synthase three is mixed to get enzyme solution；Coral is soaked in enzyme solution
In, control constant temperature shaker temperature is 50 DEG C, is hydrolyzed 2 hours under conditions of 300 r/min of revolving speed；Later, coral is ground
Wear into the coral powder that average particle size is 10 μm.Wherein, the preparation of sodium sulfite buffer solution is the prior art, and is not this Shen
Core content please, because without being developed in details herein.
Embodiment two:
A kind of preparation method of acoustical cotton, includes the following steps:
Step 1: 66KgPLA is first put into mixer, and melted with the stirring of the revolving speed of 100rpm；
Step 2: 4Kg surfactant, 10Kg diatomite, 5Kg lubricant and 8Kg pearl powder to be added to the mixing of step 1
In device, progress is sufficiently mixed with 100rpm revolving speed；
Step 3: 4Kg heat stabilizer, 5Kg carbamide and 2Kg anti ultraviolet agent are added in the mixer of step 2, still keep
100rpm revolving speed is sufficiently mixed, and mixed melting body is obtained；
Step 4: mixed melting body is passed through the acoustical cotton finished product that non-woven fabric type is made in nozzle spinneret under nitrogen protection.
Secondly, mixture of the surfactant for neopelex and fatty acid methyl ester APEO, and two
The mass ratio of person is 1:1.3, and lubricant TAF, heat stabilizer is cuprous iodide, anti ultraviolet agent 2-(2 '-hydroxyl -3 ', 5 ' -
Two tertiary phenyl) -5- chlorination benzotriazole.
Furthermore the preparation method of coral powder: first preparing the sodium sulfite buffer solution that 50ml pH is 8.0, with 1ml song
It draws to lead to and is used as surfactant, and use the combination of alkali protease, papain and trypsase that mass ratio is 1:1:1
Enzyme 5g is catalyzed；By sodium sulfite buffer solution, Qula is logical and group synthase three is mixed to get enzyme solution；Coral is soaked in enzyme solution
In, control constant temperature shaker temperature is 50 DEG C, is hydrolyzed 2 hours under conditions of 300 r/min of revolving speed；Later, coral is ground
Wear into the coral powder that average particle size is 10 μm.Wherein, the preparation of sodium sulfite buffer solution is the prior art, and is not this Shen
Core content please, because without being developed in details herein.
Embodiment three:
A kind of preparation method of acoustical cotton, includes the following steps:
Step 1: 58KgPLA is first put into mixer, and melted with the stirring of the revolving speed of 100rpm；
Step 2: 3Kg surfactant, 8Kg diatomite, 4Kg lubricant and 7.5Kg pearl powder to be added to the mixing of step 1
In device, progress is sufficiently mixed with 100rpm revolving speed；
Step 3: 3Kg heat stabilizer, 4Kg carbamide and 1.5Kg anti ultraviolet agent are added in the mixer of step 2, still protect
It holds 100rpm revolving speed to be sufficiently mixed, obtains mixed melting body；
Step 4: mixed melting body is passed through the acoustical cotton finished product that non-woven fabric type is made in nozzle spinneret under nitrogen protection.
Secondly, mixture of the surfactant for neopelex and fatty acid methyl ester APEO, and two
The mass ratio of person is 1:1, and lubricant TAF, heat stabilizer is lithium iodide, anti ultraviolet agent 2-(2 '-hydroxyl -3 ', 5 '-two uncles
Phenyl) -5- chlorination benzotriazole.
Furthermore the preparation method of coral powder: first preparing the sodium sulfite buffer solution that 50ml pH is 8.0, with 1ml song
It draws to lead to and is used as surfactant, and use the combination of alkali protease, papain and trypsase that mass ratio is 1:1:1
Enzyme 5g is catalyzed；By sodium sulfite buffer solution, Qula is logical and group synthase three is mixed to get enzyme solution；Coral is soaked in enzyme solution
In, control constant temperature shaker temperature is 50 DEG C, is hydrolyzed 2 hours under conditions of 300 r/min of revolving speed；Later, coral is ground
Wear into the coral powder that average particle size is 10 μm.Wherein, the preparation of sodium sulfite buffer solution is the prior art, and is not this Shen
Core content please, because without being developed in details herein.
Example IV:
A kind of preparation method of acoustical cotton, includes the following steps:
Step 1: 56KgPLA is first put into mixer, and melted with the stirring of the revolving speed of 100rpm；
Step 2: 3Kg surfactant, 10Kg diatomite, 4Kg lubricant and 7Kg pearl powder to be added to the mixing of step 1
In device, progress is sufficiently mixed with 100rpm revolving speed；
Step 3: 4Kg heat stabilizer, 3Kg carbamide and 1.5Kg anti ultraviolet agent are added in the mixer of step 2, still protect
It holds 100rpm revolving speed to be sufficiently mixed, obtains mixed melting body；
Step 4: mixed melting body is passed through the acoustical cotton finished product that non-woven fabric type is made in nozzle spinneret under nitrogen protection.
Secondly, mixture of the surfactant for neopelex and fatty acid methyl ester APEO, and two
The mass ratio of person is 1:1, and lubricant TAF, heat stabilizer is lithium iodide, anti ultraviolet agent 2-(2 '-hydroxyl -3 ', 5 '-two uncles
Phenyl) -5- chlorination benzotriazole.
Furthermore the preparation method of coral powder: first preparing the sodium sulfite buffer solution that 50ml pH is 8.0, with 1ml song
It draws to lead to and is used as surfactant, and use the combination of alkali protease, papain and trypsase that mass ratio is 1:1:1
Enzyme 5g is catalyzed；By sodium sulfite buffer solution, Qula is logical and group synthase three is mixed to get enzyme solution；Coral is soaked in enzyme solution
In, control constant temperature shaker temperature is 50 DEG C, is hydrolyzed 2 hours under conditions of 300 r/min of revolving speed；Later, coral is ground
Wear into the coral powder that average particle size is 10 μm.Wherein, the preparation of sodium sulfite buffer solution is the prior art, and is not this Shen
Core content please, because without being developed in details herein.
Embodiment five:
A kind of preparation method of acoustical cotton, includes the following steps:
Step 1: 53KgPLA is first put into mixer, and melted with the stirring of the revolving speed of 100rpm；
Step 2: 4Kg surfactant, 8Kg diatomite, 5Kg lubricant and 7Kg pearl powder to be added to the mixer of step 1
In, progress is sufficiently mixed with 100rpm revolving speed；
Step 3: 4Kg heat stabilizer, 3Kg carbamide and 2Kg anti ultraviolet agent are added in the mixer of step 2, still keep
100rpm revolving speed is sufficiently mixed, and mixed melting body is obtained；
Step 4: mixed melting body is passed through the acoustical cotton finished product that non-woven fabric type is made in nozzle spinneret under nitrogen protection.
Secondly, mixture of the surfactant for neopelex and fatty acid methyl ester APEO, and two
The mass ratio of person is 1:1.3, and lubricant TAF, heat stabilizer is lithium iodide, anti ultraviolet agent 2-(2 '-hydroxyl -3 ', 5 '-two
Tertiary phenyl) -5- chlorination benzotriazole.
Furthermore the preparation method of coral powder: first preparing the sodium sulfite buffer solution that 50ml pH is 8.0, with 1ml song
It draws to lead to and is used as surfactant, and use the combination of alkali protease, papain and trypsase that mass ratio is 1:1:1
Enzyme 5g is catalyzed；By sodium sulfite buffer solution, Qula is logical and group synthase three is mixed to get enzyme solution；Coral is soaked in enzyme solution
In, control constant temperature shaker temperature is 50 DEG C, is hydrolyzed 2 hours under conditions of 300 r/min of revolving speed；Later, coral is ground
Wear into the coral powder that average particle size is 10 μm.Wherein, the preparation of sodium sulfite buffer solution is the prior art, and is not this Shen
Core content please, because without being developed in details herein.
Comparative example one:
A kind of preparation method of acoustical cotton, is only that in the difference of embodiment three, and the heat stabilizer of addition is the thermostabilization of calcium zinc
Agent.
Comparative example two:
A kind of preparation method of acoustical cotton, is only that in the difference of embodiment three, adds the pearl powder handled without enzyme solution.
Comparison three:
A kind of preparation method of acoustical cotton, is only that in the difference of embodiment three, is not added with diatomite.
Comparative example four:
A kind of preparation method of acoustical cotton, is only that in the difference of embodiment three, fatty acid methyl is not added in surfactant
Ester APEO.
Comparative example five:
A kind of preparation method of acoustical cotton, is only that in the difference of embodiment three, is not added with carbamide.
Herein, according to following test method, embodiment one to embodiment five and comparative example one to comparative example five are carried out
Test obtains as shown in the table:
(1) heat resistance is tested: acoustical cotton being placed in 100 DEG C of environment, time when observation acoustical cotton occurs abnormal；
(2) antibacterial test: by cell culture fluid lower than on acoustical cotton, being subsequently placed in normal temperature environment, by one week, observes sound-absorbing
The quantity of bacterium colony on cotton；
(3) compression strength: pressing to acoustical cotton using press machine, measures pressure when acoustical cotton damage；
(4) 50 termites and acoustical cotton are placed in normal temperature environment one day, observe the amount of survival of termite later by insecticidal properties；
| Test item | There is abnormal time (h) | Colony counts (cfu) | Compression strength (Mpa) | Termite amount of survival (only) |
| Embodiment one | 53 | 0 | 1.62 | 0 |
| Embodiment two | 56 | 0 | 1.72 | 0 |
| Embodiment three | 56 | 0 | 1.68 | 0 |
| Example IV | 54 | 0 | 1.65 | 2 |
| Embodiment five | 51 | 1 | 1.63 | 1 |
| Comparative example one | 43 | 0 | 1.59 | 0 |
| Comparative example two | 52 | 16 | 1.61 | 0 |
| Comparative example three | 53 | 5 | 1.34 | 2 |
| Comparative example four | 53 | 1 | 1.58 | 0 |
| Comparative example five | 51 | 0 | 1.61 | 48 |
There is good thermal stability by the acoustical cotton that upper table can be seen that the application.Also, also have good anti-
Bacterium, pest-resistant and stronger compressive property.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. a kind of acoustical cotton, which is characterized in that according to the mass fraction, including following component:
50~66 parts of PLA
2~4 parts of heat stabilizer
7~8 parts of pearl powder
2~4 parts of surfactant
3~5 parts of carbamide
6~10 parts of diatomite
3~5 parts of lubricant
1~2 part of anti ultraviolet agent.
2. a kind of acoustical cotton according to claim 1, it is characterised in that: heat stabilizer is iodized salt.
3. a kind of acoustical cotton according to claim 2, it is characterised in that: the iodized salt is cuprous iodide or lithium iodide.
4. a kind of acoustical cotton according to claim 1, it is characterised in that: the pearl powder is by by containing basic protein
Treated that pearl is ground for the mixed enzyme solution of enzyme, papain and trypsase.
5. a kind of acoustical cotton according to claim 4, it is characterised in that: the partial size D of the pearl powder50Less than 5 μm.
6. a kind of acoustical cotton according to claim 1, it is characterised in that;The surfactant is detergent alkylate sulphur
The mixture of sour sodium and fatty acid methyl ester APEO, and the mass ratio of the two is 1:0.7~1.3.
7. a kind of acoustical cotton according to claim 1, it is characterised in that: the lubricant is TAF.
8. a kind of acoustical cotton according to claim 1, it is characterised in that: the anti ultraviolet agent is 2-(2 '-hydroxyl -3 ',
5 '-two tertiary phenyl) -5- chlorination benzotriazole.
9. a kind of preparation method of acoustical cotton as described in any one of claim 1 to 8 claim comprising following step
It is rapid:
It is melted Step 1: 50~66 parts of PLA are first put into mixer；
Step 2: 2~4 parts of surfactants, 6~10 parts of diatomite, 3~5 parts of lubricants and 7~8 parts of pearl powders are added to
In the mixer of step 1, it is sufficiently mixed；
Step 3: 2~4 parts of heat stabilizers, 3~5 parts of carbamides and 1~2 part of anti ultraviolet agent to be added to the mixer of step 2
In, it is sufficiently mixed, obtains mixed melting body；
Step 4: mixed melting body to be made up to the acoustical cotton finished product of non-woven fabric type of nozzle spinneret.
10. a kind of preparation method of acoustical cotton according to claim 9, it is characterised in that: nozzle is in spinneret in step 4
It needs to carry out under nitrogen protection in the process.
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Application publication date: 20190531 |