CN109206150A - A kind of preparation method of sound-absorbing material - Google Patents
A kind of preparation method of sound-absorbing material Download PDFInfo
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- CN109206150A CN109206150A CN201811097917.2A CN201811097917A CN109206150A CN 109206150 A CN109206150 A CN 109206150A CN 201811097917 A CN201811097917 A CN 201811097917A CN 109206150 A CN109206150 A CN 109206150A
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- sound
- absorbing material
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- luffa
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B30/00—Compositions for artificial stone, not containing binders
- C04B30/02—Compositions for artificial stone, not containing binders containing fibrous materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/0675—Vegetable refuse; Cellulosic materials, e.g. wood chips, cork, peat, paper
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
Abstract
The present invention relates to a kind of preparation methods of sound-absorbing material, belong to Material Field.The present invention is using natural luffa as support material, the prosperity of luffa hole has good adsorption capacity first, secondly luffa has good load performance, therefore it is handled by hydrogen peroxide, it is carried out to mix immersion with soak, pass through the processing of soak, maleic anhydride is improved to the grafting ability of luffa, the modification of maleic anhydride, increase the combination of luffa and polyethyleneimine, then by carbonizing in advance, additive pyrolysis generates body, porous structure is being generated by polyethyleneimine surface, and carbon nanotube is contained in inside, then it is combined with mixture again, polyethyleneimine is redissolved in water, the tartaric acid of addition and the complexing of extra ferrous ion and chromium ion are deposited on pre- charred surface, or it is grafted on inside luffa, increase porosity, finally it is spray-dried, increase its surface Concave-convex performance, further improves attracting performance.
Description
Technical field
The present invention relates to a kind of preparation methods of sound-absorbing material, belong to Material Field.
Background technique
Sound-absorbing material is the material with stronger absorption sound energy, reducing noise performance, is made by means of the porosity of itself, film
With or resonant interaction and can have the material of absorption to incident sound, one of the element of ultrasonography equipment, sound-absorbing material
It to be matched with the acoustic characteristic impedance of the sound bearing medium of surrounding, enter sound-absorbing material with enabling sound areflexia, and keep incident sound exhausted
Major part is absorbed.
In order to meet the engineering and practicability requirement of cutting operation system, the ultralight small-sized cold cut of solution cuts operating system and makes an uproar
The big practical challenges of sound become key.The noise that operating system is cut in ultralight small-sized cold cut is mainly derived from two aspects: first is that
The mechanical noise that prime mover and high-pressure pump generate during operation；Second is that due to high-speed water jet and air or periphery medium phase
The injection noise that interaction generates.The common method of noise control has: sound absorption, sound insulation and silencer.Sound absorption is exactly to utilize absorption
The material and structure of sound energy, reduce the sound energy for being broadcast to recipient, reduce noise.Sound insulation be using partiting sound member noise source with
Recipient separates, and noise is made to be obstructed and cannot pass through, and controls noise.Silencer is that have sound absorption liner using a kind of
Or special structure form, effectively inhibit sound transmission while allowing air-flow to pass through.Operating system is cut in ultralight small-sized cold cut
It is absorbed sound in noise reduction using the silencer equipped with sound-absorbing material.
But existing sound-absorbing material sound absorption characteristics are poor, by increasing the thickness of Porous substrate, although can be improved sound absorption
Characteristic, but do not reach and be enough satisfactory sound absorption effect.In addition, the thickness with Porous substrate increases, sound-absorbing material
Material cost increase the problem of.
Summary of the invention
The technical problems to be solved by the invention: for the poor and at high cost problem of current sound-absorbing material sound absorption effect, originally
Invention provides a kind of preparation method of sound-absorbing material.
In order to solve the above technical problems, the present invention is using technical solution as described below:
A kind of preparation method of sound-absorbing material, the preparation method include the following steps:
(1) it takes luffa to be crushed, is added in hydrogen peroxide and impregnates, place into heat in soak and impregnate, filter, wash, do
It is dry, dried object is collected, 17~23:4 in mass ratio~6:1~3 takes dimethylbenzene, dried object, maleic anhydride to be put into reactor,
Preheating；
(2) after preheating, using nitrogen protection, the carbon nanotube of dried object quality 10~15% is added, heats up, stirs
It mixes, discharges, filter, wash, drying object is collected in drying；
(3) drying object, water and polyethyleneimine 7~9:23 in mass ratio~30:5 are put into container, are added at 50~60 DEG C
Heat adds silane coupling agent and additive, stirs, and centrifugation is collected precipitating, washed using methanol, obtain sound-absorbing material base-material；
(4) sound-absorbing material base-material is put into retort and is carbonized in advance, collect pre- carbide, by pre- carbide, water, protective agent
4~8:16:1 is put into reactor in mass ratio, is stirred, and mixture is added, and is uniformly mixed, and is added ammonium hydroxide and is adjusted pH
To 10~11, stands, add tartaric acid, additional amount is the 2~4% of mixture quality, is stirred, and standing is spray-dried, washing
It is dry to get sound-absorbing material to neutrality.
Soak is formulated as ethylene glycol, phenol and water 7~9:3 in mass ratio~5:12~15 in the step (1)
It is stirred to get soak.
Silane coupling agent is gamma-aminopropyl-triethoxy-silane in the step (3), 3- aminopropyl trimethoxysilane is pressed
Mass ratio 7:1~2 mix；The additional amount of silane coupling agent is dry amount of substance 4~6%.
Additive is ammonium hydrogen carbonate, any one in sodium bicarbonate in the step (3).
The condition carbonized in advance in the step (4) is 180~220 DEG C, using nitrogen protection, carbonizes 1~3h in advance.
Protective agent is oleic acid in the step (4).
Mixture is iron chloride in the step (4), frerrous chloride, chromic nitrate 13~15:16 in mass ratio~19:1 are mixed
It closes.
The present invention is compared with other methods, and advantageous effects are:
For the present invention using natural luffa as support material, luffa hole prosperity first has good adsorption capacity,
Secondly luffa has good load performance, therefore is handled by hydrogen peroxide, then it is carried out to mix leaching with soak
Bubble is improved maleic anhydride and is increased to the grafting ability of luffa by the modification of maleic anhydride by the processing of soak
The binding ability of luffa and polyethyleneimine, then by carbonizing in advance, additive pyrolysis therein generates gas, by poly- second
Alkene imines surface generates porous structure, and carbon nanotube is contained in inside, can increase the absorbability to sound wave, then again will
It is combined with mixture, forms magnetic-particle under the action of ammonium hydroxide by mixture, is adsorbed in pre- charing luffa
Portion and surface, and loading section chromium further increase the sound absorption to sound wave, simultaneously by chromium synergic nano magnetic-particle
Polyethyleneimine rinses soluble in water, makes the exposure of pre- charing particle surface, with magnetic-particle ining conjunction with, and the tartaric acid of addition and
Extra ferrous ion and chromium ion complexing are deposited on pre- charred surface, or are grafted on inside luffa, increase porosity, most
After be spray-dried, make its carry out repeating part package, so that its surface is increased concave-convex performance, further improve attractability
Energy.
Specific embodiment
Soak be formulated as being stirred ethylene glycol, phenol and water 7~9:3 in mass ratio~5:12~15 to get
Soak.
Silane coupling agent is gamma-aminopropyl-triethoxy-silane, 3- aminopropyl trimethoxysilane 7:1~2 in mass ratio
It mixes；The additional amount of silane coupling agent is dry amount of substance 4~6%.
Additive is ammonium hydrogen carbonate, any one in sodium bicarbonate.
Protective agent is oleic acid.
Mixture is iron chloride, frerrous chloride, chromic nitrate 13~15:16 in mass ratio~19:1 are mixed.
A kind of preparation method of sound-absorbing material, the preparation method include the following steps:
(1) it takes luffa to be crushed, is added in 0.3mol/L hydrogen peroxide and impregnates 30min, place into heat in soak and impregnate
2h, filtering is dry by residue washing, collects dried object, 17~23:4 in mass ratio~6:1~3, take dimethylbenzene, dried object,
Maleic anhydride is put into reactor, preheats 50min at 40~50 DEG C；
(2) after preheating, using nitrogen protection, the carbon nanotube of dried object quality 10~15% is added, is warming up to 55
~60 DEG C, 2h is stirred, is discharged, filter cake is washed in filtering, dries, and collects drying object；
(3) drying object, water and polyethyleneimine 7~9:23 in mass ratio~30:5 are put into container, are added at 50~60 DEG C
Hot 3h adds silane coupling agent and additive, stirs 4h, and centrifugation is collected precipitating, washed using methanol, obtain sound-absorbing material base
Material；
(4) sound-absorbing material base-material is put into retort and is carbonized in advance, the condition carbonized in advance is 180~220 DEG C, uses nitrogen
Protection carbonizes 1~3h in advance, collects pre- carbide, pre- carbide, water, protective agent 4~8:16:1 in mass ratio are put into reactor
In, it is stirred 70min, adds mixture, is uniformly mixed, ammonium hydroxide is added and adjusts pH to 10~11, stands 2~4h, then
Tartaric acid is added, additional amount is the 2~4% of mixture quality, stirs 10min with 300r/min, stands 1h, and spray drying is washed
It washs to neutrality, it is dry to get sound-absorbing material.
Embodiment 1
Soak is formulated as ethylene glycol, phenol and water 9:5:15 being in mass ratio stirred to get soak.
Silane coupling agent is gamma-aminopropyl-triethoxy-silane, 3- aminopropyl trimethoxysilane 7:2 in mass ratio mixing
It forms；The additional amount of silane coupling agent is dry amount of substance 6%.
Additive is sodium bicarbonate.
Protective agent is oleic acid.
Mixture is iron chloride, frerrous chloride, chromic nitrate 15:19:1 in mass ratio are mixed.
A kind of preparation method of sound-absorbing material, the preparation method include the following steps:
(1) it takes luffa to be crushed, is added in 0.3mol/L hydrogen peroxide and impregnates 30min, place into heat in soak and impregnate
2h, filtering is dry by residue washing, collects dried object, 23:6:3 in mass ratio takes dimethylbenzene, dried object, maleic anhydride to put
Enter in reactor, preheats 50min at 50 DEG C；
(2) after preheating, using nitrogen protection, the carbon nanotube of dried object quality 15% is added, 60 DEG C is warming up to, stirs
2h is mixed, is discharged, filter cake is washed in filtering, dries, and collects drying object；
(3) drying object, water and polyethyleneimine 9:30:5 in mass ratio are put into container, heat 3h at 60 DEG C, adds
Silane coupling agent and additive, stir 4h, and centrifugation is collected precipitating, washed using methanol, obtain sound-absorbing material base-material；
(4) sound-absorbing material base-material being put into retort and is carbonized in advance, the condition carbonized in advance is 220 DEG C, using nitrogen protection,
Pre- charing 3h, collects pre- carbide, pre- carbide, water, protective agent 8:16:1 in mass ratio is put into reactor, are stirred
70min adds mixture, is uniformly mixed, and adds ammonium hydroxide and adjusts pH to 11, stands 4h, add tartaric acid, additional amount is
The 4% of mixture quality stirs 10min with 300r/min, stands 1h, spray drying, washing to neutrality, drying is to get sound absorption
Material.
Embodiment 2
Soak is formulated as ethylene glycol, phenol and water 8:4:14 being in mass ratio stirred to get soak.
Silane coupling agent is gamma-aminopropyl-triethoxy-silane, 3- aminopropyl trimethoxysilane 7:1 in mass ratio mixing
It forms；The additional amount of silane coupling agent is dry amount of substance 5%.
Additive is ammonium hydrogen carbonate.
Protective agent is oleic acid.
Mixture is iron chloride, frerrous chloride, chromic nitrate 14:18:1 in mass ratio are mixed.
A kind of preparation method of sound-absorbing material, the preparation method include the following steps:
(1) it takes luffa to be crushed, is added in 0.3mol/L hydrogen peroxide and impregnates 30min, place into heat in soak and impregnate
2h, filtering is dry by residue washing, collects dried object, 21:5:2 in mass ratio takes dimethylbenzene, dried object, maleic anhydride to put
Enter in reactor, preheats 50min at 45 DEG C；
(2) after preheating, using nitrogen protection, the carbon nanotube of dried object quality 13% is added, 58 DEG C is warming up to, stirs
2h is mixed, is discharged, filter cake is washed in filtering, dries, and collects drying object；
(3) drying object, water and polyethyleneimine 8:27 in mass ratio are put into container, heat 3h at 55 DEG C, adds silicon
Alkane coupling agent and additive, stir 4h, and centrifugation is collected precipitating, washed using methanol, obtain sound-absorbing material base-material；
(4) sound-absorbing material base-material being put into retort and is carbonized in advance, the condition carbonized in advance is 190 DEG C, using nitrogen protection,
Pre- charing 2h, collects pre- carbide, pre- carbide, water, protective agent 6:16:1 in mass ratio is put into reactor, are stirred
70min adds mixture, is uniformly mixed, and adds ammonium hydroxide and adjusts pH to 11, stands 3h, add tartaric acid, additional amount is
The 3% of mixture quality stirs 10min with 300r/min, stands 1h, spray drying, washing to neutrality, drying is to get sound absorption
Material.
Embodiment 3
Soak is formulated as ethylene glycol, phenol and water 7:3:12 being in mass ratio stirred to get soak.
Silane coupling agent is gamma-aminopropyl-triethoxy-silane, 3- aminopropyl trimethoxysilane 7:1 in mass ratio mixing
It forms；The additional amount of silane coupling agent is dry amount of substance 4%.
Additive is ammonium hydrogen carbonate.
Protective agent is oleic acid.
Mixture is iron chloride, frerrous chloride, chromic nitrate 13:19:1 in mass ratio are mixed.
A kind of preparation method of sound-absorbing material, the preparation method include the following steps:
(1) it takes luffa to be crushed, is added in 0.3mol/L hydrogen peroxide and impregnates 30min, place into heat in soak and impregnate
2h, filtering is dry by residue washing, collects dried object, 17:4:1 in mass ratio takes dimethylbenzene, dried object, maleic anhydride to put
Enter in reactor, preheats 50min at 40 DEG C；
(2) after preheating, using nitrogen protection, the carbon nanotube of dried object quality 10% is added, is warming up to 55~60
DEG C, 2h is stirred, is discharged, filter cake is washed in filtering, dries, and collects drying object；
(3) drying object, water and polyethyleneimine 7:23:5 in mass ratio are put into container, heat 3h at 50 DEG C, adds
Silane coupling agent and additive, stir 4h, and centrifugation is collected precipitating, washed using methanol, obtain sound-absorbing material base-material；
(4) sound-absorbing material base-material being put into retort and is carbonized in advance, the condition carbonized in advance is 180 DEG C, using nitrogen protection,
1~3h of pre- charing, collects pre- carbide, pre- carbide, water, protective agent 4:16:1 in mass ratio is put into reactor, stirs
70min is mixed, mixture is added, is uniformly mixed, ammonium hydroxide is added and adjusts pH to 10, stand 2h, add tartaric acid, be added
Amount is the 2% of mixture quality, stirs 10min with 300r/min, stands 1h, spray drying, washing to neutrality, it is dry to get
Sound-absorbing material.
Comparative example: commercially available sound-absorbing material.
The sound-absorbing material that above-described embodiment is obtained with comparative example is detected, sound-absorbing is measured by common Alpha cabin
The sound-absorption coefficient of the acoustic material of effect, experimental example and comparative example, obtains that the results are shown in Table 1.
Table 1:
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Sound-absorption coefficient/% | 0.285 | 0.218 | 0.215 | 0.176 | 0.184 | 0.114 |
| Sound-absorbing index/dB | 19.542 | 19.097 | 18.756 | 5.418 | 5.698 | 4.396 |
In summary, sound-absorbing material effect of the invention is more preferable as can be seen from Table 1, is worth of widely use.
Claims (7)
1. a kind of preparation method of sound-absorbing material, which is characterized in that the preparation method includes the following steps:
(1) it takes luffa to be crushed, is added in hydrogen peroxide and impregnates, place into heat in soak and impregnate, filter, wash, do
It is dry, dried object is collected, 17~23:4 in mass ratio~6:1~3 takes dimethylbenzene, dried object, maleic anhydride to be put into reactor,
Preheating；
(2) after preheating, using nitrogen protection, the carbon nanotube of dried object quality 10~15% is added, heats up, stirs
It mixes, discharges, filter, wash, drying object is collected in drying；
(3) drying object, water and polyethyleneimine 7~9:23 in mass ratio~30:5 are put into container, are added at 50~60 DEG C
Heat adds silane coupling agent and additive, stirs, and centrifugation is collected precipitating, washed using methanol, obtain sound-absorbing material base-material；
(4) sound-absorbing material base-material is put into retort and is carbonized in advance, collect pre- carbide, by pre- carbide, water, protective agent
4~8:16:1 is put into reactor in mass ratio, is stirred, and mixture is added, and is uniformly mixed, and is added ammonium hydroxide and is adjusted pH
To 10~11, stands, add tartaric acid, additional amount is the 2~4% of mixture quality, is stirred, and standing is spray-dried, washing
It is dry to get sound-absorbing material to neutrality.
2. the preparation method of sound-absorbing material according to claim 1, which is characterized in that soak matches in the step (1)
It is made as being stirred to get soak ethylene glycol, phenol and water 7~9:3 in mass ratio~5:12~15.
3. the preparation method of sound-absorbing material according to claim 1, which is characterized in that silane coupling agent in the step (3)
It is mixed for gamma-aminopropyl-triethoxy-silane, 3- aminopropyl trimethoxysilane 7:1~2 in mass ratio；Silane coupling agent
Additional amount be dry amount of substance 4~6%.
4. the preparation method of sound-absorbing material according to claim 1, which is characterized in that additive is carbon in the step (3)
Any one in sour hydrogen ammonium, sodium bicarbonate.
5. the preparation method of sound-absorbing material according to claim 1, which is characterized in that the item carbonized in advance in the step (4)
Part is 180~220 DEG C, using nitrogen protection, carbonizes 1~3h in advance.
6. the preparation method of sound-absorbing material according to claim 1, which is characterized in that protective agent is oil in the step (4)
Acid.
7. the preparation method of sound-absorbing material according to claim 1, which is characterized in that mixture is chlorine in the step (4)
Change iron, frerrous chloride, chromic nitrate 13~15:16 in mass ratio~19:1 to mix.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110450475A (en) * | 2019-08-21 | 2019-11-15 | 江苏农林职业技术学院 | It is a kind of using chalina as the papery abatvoix and preparation method of core material |
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Application publication date: 20190115 |