CN112321266A - Sound-absorbing material for noise reduction of centrifugal machine and preparation method thereof - Google Patents
Sound-absorbing material for noise reduction of centrifugal machine and preparation method thereof Download PDFInfo
- Publication number
- CN112321266A CN112321266A CN202011250402.9A CN202011250402A CN112321266A CN 112321266 A CN112321266 A CN 112321266A CN 202011250402 A CN202011250402 A CN 202011250402A CN 112321266 A CN112321266 A CN 112321266A
- Authority
- CN
- China
- Prior art keywords
- stirring
- parts
- fiber
- absorbing material
- sound
- 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.)
- Pending
Links
Classifications
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
-
- 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
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a sound absorbing material for noise reduction of a centrifugal machine. The invention discloses a sound absorbing material for noise reduction of a centrifuge, which comprises: uniformly weaving glass fibers, basalt fibers, acetate fibers, ceramic fibers, polyamide fibers and quartz glass fibers into a fiber mesh layer; ball milling coconut shell activated carbon, a gamma molecular sieve and methyl cellulose, adjusting the water content of a system, stirring in vacuum, aging, stirring at normal pressure, irradiating by pulse microwave, adjusting the water content of the system, and spray drying to obtain a prefabricated material; adding the prefabricated material into an ethanol solution, adding a coupling agent and N-oleoyl-N-methyl sodium taurate, uniformly mixing, adjusting the pH value of the system to 5-6, stirring, immersing a fiber mesh layer in the solution, carrying out ultrasonic treatment for 1-2h with the ultrasonic power of 300-400W, adding sodium silicate, calcium oxide and cement, uniformly stirring, adding aluminum powder paste, uniformly stirring, and sequentially carrying out forming, demolding and drying to obtain the sound-absorbing material for reducing the noise of the centrifuge.
Description
Technical Field
The invention relates to the technical field of noise reduction of centrifuges, in particular to a noise-absorbing material for noise reduction of centrifuges and a preparation method thereof.
Background
At present, noise pollution becomes one of the hazards affecting physical and psychological health of people, the noise can damage the hearing of people to cause hearing damage, and after the noise pollution is frequently caused, people feel very boring, the working and life quality of people can be affected in serious cases, and inconvenience is brought to the normal working and life of people.
At present, concrete pipe piles are widely applied to various foundation construction engineering fields, and particularly, a cylindrical steel mould poured with concrete is placed on a centrifuge to rotate at a high speed in the production process of an electric pole, so that an electric pole product with a hollow cylindrical structure is formed. The centrifugal machine drives the driving shaft to rotate through the motor, the driving shaft drives the driving wheel of the centrifugal machine to rotate, and the driving wheel drives the pipe die to rotate through friction force generated by contact with the pipe die running wheel, so that concrete is gradually and compactly molded in the pipe die.
At present, because the centrifuge generates strong noise in the working process, the physical and mental health of production staff is greatly influenced, how to effectively reduce the noise generated by the centrifuge is a technical problem to be solved urgently at present.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a sound-absorbing material for noise reduction of a centrifuge and a preparation method thereof.
A noise-absorbing material for noise reduction of a centrifuge comprises the following raw materials in parts by weight: 60-100 parts of glass fiber, 30-50 parts of basalt fiber, 10-16 parts of acetate fiber, 1-8 parts of ceramic fiber, 1-5 parts of polyamide fiber, 1-5 parts of quartz glass fiber, 6-10 parts of coconut shell activated carbon, 1-2 parts of gamma molecular sieve, 1-2 parts of methyl cellulose, 1-2 parts of coupling agent, 1-2 parts of N-oleoyl-N-methyltaurate, 2-4 parts of sodium silicate, 1-2 parts of calcium oxide, 10-20 parts of cement and 2-4 parts of aluminum powder paste.
Preferably, the coupling agent is a silane coupling agent and/or a titanate coupling agent.
Preferably, the cement is portland cement.
The preparation method of the sound-absorbing material for reducing the noise of the centrifuge comprises the following steps:
s1, uniformly weaving glass fibers, basalt fibers, acetate fibers, ceramic fibers, polyamide fibers and quartz glass fibers into a fiber mesh layer;
s2, ball-milling coconut shell activated carbon, a gamma molecular sieve and methyl cellulose until the coconut shell activated carbon, the gamma molecular sieve and the methyl cellulose pass through a sieve of 300-400 meshes, adjusting the water content of the system to 80-90%, stirring for 2-4h at the stirring speed of 500-600r/min, stirring in vacuum for 10-20min, aging for 5-10h, stirring at normal pressure, performing pulsed microwave irradiation for 10-20min at the temperature of 600-700 ℃ in the pulsed microwave irradiation process, adjusting the water content of the system to 30-36%, and performing spray drying to obtain a prefabricated material;
s3, adding the prefabricated material into an ethanol solution, adding a coupling agent and N-oleoyl-N-methyl sodium taurate, uniformly mixing, adjusting the pH value of the system to 5-6, stirring, immersing the fiber mesh layer in the solution, performing ultrasonic treatment for 1-2h with the ultrasonic power of 300-400W, adding sodium silicate, calcium oxide and cement, uniformly stirring, adding aluminum powder paste, uniformly stirring, and sequentially performing molding, demolding and drying to obtain the sound absorbing material for reducing the noise of the centrifuge.
Preferably, in S1, the fiber average diameter of the fiber web layer is 10 to 200 μm.
Preferably, in S1, the mass per unit area of the fiber web layer is 50 to 100g/m2The air permeability is 810-850 mu m/Pa.s.
Preferably, the vacuum pressure during the vacuum stirring of S2 is 20-60 kPa.
Preferably, the pulsed microwave irradiation at S2 is suspended for 4-6S every 1min of microwave irradiation.
The technical effects of the invention are as follows:
coconut shell active carbon with developed microporesThe invention adopts coconut shell active carbon and gamma molecular sieve to compound, and combines them under the action of methyl cellulose, and not only the mutual dispersion uniformity is extremely high, but also the mutual combination and reasonable control of their mixture ratio can form irregular microcavity with complex three-dimensional labyrinth structure, and its specific surface area can be up to 3.6X 105cm2The obtained product has good sound absorption function, is effectively bonded on the surface of the fiber mesh layer under the action of the coupling agent, has extremely high bonding strength, and further improves the sound absorption effect after foaming and curing;
according to the invention, the fiber mesh layer is formed by compounding and pre-weaving the glass fiber, the basalt fiber, the acetate fiber, the ceramic fiber, the polyamide fiber and the quartz glass fiber, so that the integrity of the sound-absorbing material can be effectively ensured, the toughness and the rigidity of the sound-absorbing material are improved, the mechanical property of the sound-absorbing material is obviously improved, but the sound-absorbing effect of the sound-absorbing material cannot meet the requirement, the prefabricated material can quickly permeate into the fiber structure of the fiber mesh layer and be quickly combined on the surface of the fiber under the action of N-oleoyl-N-methyl sodium taurate, and after foaming and curing, the sound-absorbing effect can reach more than 0.93.
Compared with the traditional sound-absorbing material, the sound-absorbing material has the advantages of reasonable formula, convenience in processing, simple preparation method, high product strength, excellent impact resistance, uniform cohesive strength, small deformation stress, reduction of deformation risk after the sound-absorbing material is used, suitability for various conditions of high and low sound, good bearing and compression resistance characteristics, no harmful substances such as formaldehyde, heavy metal and the like, safety and reliability, no influence of environment and time on the sound-absorbing coefficient, and long-term stable sound-absorbing performance. Through detection, the sound absorption coefficient of the invention reaches 0.93, and the invention is particularly suitable for sound insulation and noise reduction of a centrifugal machine for producing electric poles.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A preparation method of a sound absorbing material for noise reduction of a centrifuge comprises the following steps:
s1, uniformly weaving 60kg of glass fiber, 50kg of basalt fiber, 10kg of acetate fiber, 8kg of ceramic fiber, 1kg of polyamide fiber and 5kg of quartz glass fiber into a fiber web layer, wherein the average fiber diameter of the fiber web layer is 10-200 mu m, and the unit area mass is 55g/m2The air permeability is 847 mu m/Pa.s;
s2, feeding 6kg of coconut shell activated carbon, 2kg of gamma molecular sieve and 1kg of methyl cellulose into a ball mill, ball-milling until the coconut shell activated carbon, the gamma molecular sieve and the methyl cellulose pass through a 400-mesh sieve, adjusting the water content of a system to 80%, stirring for 4h at a stirring speed of 500r/min, stirring for 10min under 60kPa in vacuum, aging for 10h, stirring for 20min at a speed of 1000r/min under normal pressure, performing pulsed microwave irradiation for 10min at a temperature of 700 ℃ in the pulsed microwave irradiation process, pausing for 4S every 1min of microwave irradiation in the pulsed microwave irradiation process, adjusting the water content of the system to 36%, and performing spray drying to obtain a prefabricated material;
s3, adding the prefabricated material into an ethanol water solution with the mass fraction of 50%, adding 2kg of silane coupling agent KH550 and 1kg of N-oleoyl-N-methyl sodium taurate, uniformly mixing, adjusting the pH value of the system to 5-6, stirring for 2 hours at the speed of 150r/min, immersing the fiber mesh layer in the mixture, performing ultrasonic treatment for 2 hours with the ultrasonic power of 300W, adding 4kg of sodium silicate, 1kg of calcium oxide and 20kg of silicate cement, uniformly stirring by magnetic force, adding 2kg of aluminum paste, uniformly stirring by magnetic force, and sequentially molding, demolding and airing to obtain the sound-absorbing material for reducing the noise of the centrifuge.
Example 2
A preparation method of a sound absorbing material for noise reduction of a centrifuge comprises the following steps:
s1, uniformly weaving 100kg of glass fiber, 30kg of basalt fiber, 16kg of acetate fiber, 1kg of ceramic fiber, 5kg of polyamide fiber and 1kg of quartz glass fiber into a fiber web layer, wherein the average fiber diameter of the fiber web layer is 10-200 mu m, and the unit area mass is 96g/m2The air permeability is 812 μm/pas;
s2, feeding 10kg of coconut shell activated carbon, 1kg of gamma molecular sieve and 2kg of methyl cellulose into a ball mill, ball-milling until the coconut shell activated carbon, the gamma molecular sieve and the methyl cellulose pass through a 300-mesh sieve, adjusting the water content of a system to 90%, stirring for 2 hours at a stirring speed of 600r/min, stirring for 20 minutes at 20kPa in vacuum, aging for 5 hours, stirring for 10 minutes at a normal pressure at a speed of 1200r/min, performing pulsed microwave irradiation for 20 minutes at a temperature of 600 ℃ in the pulsed microwave irradiation process, pausing for 6 seconds every 1 minute in the pulsed microwave irradiation process, adjusting the water content of the system to 30%, and performing spray drying to obtain a prefabricated material;
s3, adding the prefabricated material into an ethanol water solution with the mass fraction of 60%, adding 1kg of silane coupling agent KH570 and 2kg of N-oleoyl-N-methyl sodium taurate, uniformly mixing, adjusting the pH value of the system to 5-6, stirring for 4 hours at the speed of 50r/min, immersing the fiber mesh layer in the mixture, performing ultrasonic treatment for 1 hour with the ultrasonic power of 400W, adding 2kg of sodium silicate, 2kg of calcium oxide and 10kg of silicate cement, magnetically stirring uniformly, adding 4kg of aluminum powder paste, magnetically stirring uniformly, molding, demolding and airing in sequence to obtain the sound-absorbing material for reducing the noise of the centrifuge.
Example 3
A preparation method of a sound absorbing material for noise reduction of a centrifuge comprises the following steps:
s1, uniformly weaving 70kg of glass fiber, 45kg of basalt fiber, 12kg of acetate fiber, 6kg of ceramic fiber, 2kg of polyamide fiber and 4kg of quartz glass fiber into a fiber web layer, wherein the average fiber diameter of the fiber web layer is 10-200 mu m, and the unit area mass is 66g/m2The air permeability is 832 mu m/Pa.s;
s2, feeding 7kg of coconut shell activated carbon, 1.7kg of gamma molecular sieve and 1.2kg of methyl cellulose into a ball mill, ball-milling until the coconut shell activated carbon passes through a 370-mesh sieve, adjusting the water content of the system to 82%, stirring for 3.5h at a stirring speed of 520r/min, vacuum-stirring for 12min at 50kPa, aging for 8h, stirring for 18min at a speed of 1050r/min under normal pressure, performing pulse microwave irradiation for 13min at a temperature of 680 ℃ in the pulse microwave irradiation process, pausing for 4.5S every microwave irradiation for 1min in the pulse microwave irradiation process, adjusting the water content of the system to 34%, and performing spray drying to obtain a prefabricated material;
s3, adding the prefabricated material into an ethanol water solution with the mass fraction of 52%, adding 1.7kg of silane coupling agent A151 and 1.2kg of N-oleoyl-N-methyltaurate, uniformly mixing, adjusting the pH value of the system to 5-6, stirring at the speed of 120r/min for 2.5h, immersing the fiber mesh layer in the mixture, performing ultrasonic treatment for 1.7h, wherein the ultrasonic power is 330W, adding 3.5kg of sodium silicate, 1.3kg of calcium oxide and 17kg of portland cement, magnetically stirring uniformly, adding 2.5kg of aluminum powder paste, magnetically stirring uniformly, and sequentially performing molding, demolding and airing to obtain the sound-absorbing material for reducing the noise of the centrifuge.
Example 4
A preparation method of a sound absorbing material for noise reduction of a centrifuge comprises the following steps:
s1, uniformly weaving 90kg of glass fiber, 35kg of basalt fiber, 14kg of acetate fiber, 2kg of ceramic fiber, 4kg of polyamide fiber and 2kg of quartz glass fiber into a fiber web layer, wherein the average fiber diameter of the fiber web layer is 10-200 mu m, and the unit area mass is 88g/m2The air permeability is 824 μm/Pa · s;
s2, feeding 9kg of coconut shell activated carbon, 1.3kg of gamma molecular sieve and 1.8kg of methyl cellulose into a ball mill, ball-milling until the coconut shell activated carbon passes through a 330-mesh sieve, adjusting the water content of the system to 88%, stirring for 2.5h at a stirring speed of 580r/min, vacuum stirring for 18min under 30kPa, aging for 6h, stirring for 12min at a speed of 1150r/min under normal pressure, irradiating for 17min by pulse microwave at a temperature of 620 ℃ in the pulse microwave irradiation process, pausing for 5.5S every microwave irradiation for 1min in the pulse microwave irradiation process, adjusting the water content of the system to 32%, and spray-drying to obtain a prefabricated material;
s3, adding the prefabricated material into an ethanol water solution with the mass fraction of 58%, adding 1.3kg of titanate coupling agent KR-TTS and 1.8kg of N-oleoyl-N-methyltaurate, uniformly mixing, adjusting the pH value of the system to 5-6, stirring at the speed of 80r/min for 3.5h, immersing the fiber mesh layer in the mixture, carrying out ultrasonic treatment for 1.3h, wherein the ultrasonic power is 370W, adding 2.5kg of sodium silicate, 1.7kg of calcium oxide and 13kg of silicate cement, magnetically stirring uniformly, adding 3.5kg of aluminum powder paste, magnetically stirring uniformly, and sequentially carrying out forming, demoulding and airing to obtain the sound-absorbing material for reducing the noise of the centrifuge.
Example 5
A preparation method of a sound absorbing material for noise reduction of a centrifuge comprises the following steps:
s1, uniformly weaving 80kg of glass fiber, 40kg of basalt fiber, 13kg of acetate fiber, 4kg of ceramic fiber, 3kg of polyamide fiber and 3kg of quartz glass fiber into a fiber web layer, wherein the average fiber diameter of the fiber web layer is 10-200 mu m, and the unit area mass is 76g/m2The air permeability is 831 mu m/Pa.s;
s2, feeding 8kg of coconut shell activated carbon, 1.5kg of gamma molecular sieve and 1.5kg of methyl cellulose into a ball mill, ball-milling until the coconut shell activated carbon and the gamma molecular sieve pass through 350 meshes of sieve, adjusting the water content of the system to 85%, stirring for 3 hours at a stirring speed of 550r/min, vacuum stirring for 15 minutes at 40kPa, aging for 7 hours, stirring for 15 minutes at a normal pressure at a speed of 1100r/min, performing pulsed microwave irradiation for 15 minutes at a temperature of 650 ℃ in the pulsed microwave irradiation process, pausing for 5 seconds every microwave irradiation for 1 minute in the pulsed microwave irradiation process, adjusting the water content of the system to 33%, and performing spray drying to obtain a prefabricated material;
s3, adding the prefabricated material into 55% ethanol water solution, adding 1.5kg of titanate coupling agent KR-41B and 1.5kg of N-oleoyl-N-methyltaurate, uniformly mixing, adjusting the pH value of the system to 5-6, stirring at a speed of 100r/min for 3h, immersing the fiber mesh layer in the mixture, performing ultrasonic treatment for 1.5h, performing ultrasonic power of 350W, adding 3kg of sodium silicate, 1.5kg of calcium oxide and 15kg of silicate cement, magnetically stirring uniformly, adding 3kg of aluminum powder paste, magnetically stirring uniformly, and sequentially performing molding, demolding and airing to obtain the sound-absorbing material for reducing noise of the centrifuge.
Comparative example 1
A preparation method of a sound absorbing material for noise reduction of a centrifuge comprises the following steps:
s1, weaving 143kg glass fiber into fiber net layer, the average fiber diameter of the fiber net layer is 10-200 μm, the unit area mass is 89g/m2The air permeability is 883 mu m/Pa.s;
s2, feeding 8kg of coconut shell activated carbon, 1.5kg of gamma molecular sieve and 1.5kg of methyl cellulose into a ball mill, ball-milling until the coconut shell activated carbon and the gamma molecular sieve pass through 350 meshes of sieve, adjusting the water content of the system to 85%, stirring for 3 hours at a stirring speed of 550r/min, vacuum stirring for 15 minutes at 40kPa, aging for 7 hours, stirring for 15 minutes at a normal pressure at a speed of 1100r/min, performing pulsed microwave irradiation for 15 minutes at a temperature of 650 ℃ in the pulsed microwave irradiation process, pausing for 5 seconds every microwave irradiation for 1 minute in the pulsed microwave irradiation process, adjusting the water content of the system to 33%, and performing spray drying to obtain a prefabricated material;
s3, adding the prefabricated material into 55% ethanol water solution, adding 1.5kg of titanate coupling agent KR-41B and 1.5kg of N-oleoyl-N-methyltaurate, uniformly mixing, adjusting the pH value of the system to 5-6, stirring at a speed of 100r/min for 3h, immersing the fiber mesh layer in the mixture, performing ultrasonic treatment for 1.5h, performing ultrasonic power of 350W, adding 3kg of sodium silicate, 1.5kg of calcium oxide and 15kg of silicate cement, magnetically stirring uniformly, adding 3kg of aluminum powder paste, magnetically stirring uniformly, and sequentially performing molding, demolding and airing to obtain the sound-absorbing material for reducing noise of the centrifuge.
Comparative example 2
A preparation method of a sound absorbing material for noise reduction of a centrifuge comprises the following steps:
s1, uniformly weaving 80kg of glass fiber, 40kg of basalt fiber, 13kg of acetate fiber, 4kg of ceramic fiber, 3kg of polyamide fiber and 3kg of quartz glass fiber into a fiber web layer, wherein the average fiber diameter of the fiber web layer is 10-200 mu m, and the unit area mass is 76g/m2The air permeability is 831 mu m/Pa.s;
s2, adding 11kg of coconut shell activated carbon into 55% ethanol water solution, adding 1.5kg of titanate coupling agent KR-41B and 1.5kg of N-oleoyl-N-methyl sodium taurate, uniformly mixing, adjusting the pH value of the system to 5-6, stirring at a speed of 100r/min for 3h, immersing the fiber mesh layer in the mixture, carrying out ultrasonic treatment for 1.5h, wherein the ultrasonic power is 350W, adding 3kg of sodium silicate, 1.5kg of calcium oxide and 15kg of silicate cement, magnetically stirring uniformly, adding 3kg of aluminum powder paste, magnetically stirring uniformly, and sequentially carrying out forming, demoulding and airing to obtain the sound-absorbing material for reducing the noise of the centrifuge.
Comparative example 3
A preparation method of a sound absorbing material for noise reduction of a centrifuge comprises the following steps:
s1, mixing 80kg of glass fiber, 40kg of basalt fiber, 13kg of acetate fiber and 4kg of ceramicFibers, 3kg of polyamide fibers and 3kg of quartz glass fibers are uniformly woven into a fiber web layer, the average fiber diameter of the fiber web layer is 10-200 mu m, and the mass per unit area is 76g/m2The air permeability is 831 mu m/Pa.s;
s2, feeding 8kg of coconut shell activated carbon into a ball mill, ball-milling until the coconut shell activated carbon passes through a 350-mesh sieve, adjusting the water content of the system to 85%, stirring for 3 hours at a stirring speed of 550r/min, vacuum stirring for 15 minutes at 40kPa, aging for 7 hours, stirring for 15 minutes at a speed of 1100r/min under normal pressure, performing pulsed microwave irradiation for 15 minutes at a temperature of 650 ℃ during the pulsed microwave irradiation, pausing for 5 seconds every 1 minute during the pulsed microwave irradiation, adjusting the water content of the system to 33%, and performing spray drying to obtain a prefabricated material;
s3, adding the prefabricated material into 55% ethanol water solution, adding 1.5kg of titanate coupling agent KR-41B and 1.5kg of N-oleoyl-N-methyltaurate, uniformly mixing, adjusting the pH value of the system to 5-6, stirring at a speed of 100r/min for 3h, immersing the fiber mesh layer in the mixture, performing ultrasonic treatment for 1.5h, performing ultrasonic power of 350W, adding 3kg of sodium silicate, 1.5kg of calcium oxide and 15kg of silicate cement, magnetically stirring uniformly, adding 3kg of aluminum powder paste, magnetically stirring uniformly, and sequentially performing molding, demolding and airing to obtain the sound-absorbing material for reducing noise of the centrifuge.
The sound-absorbing material obtained in example 5 was subjected to physical and chemical property tests in comparison with the sound-absorbing materials obtained in comparative examples 1 to 3, wherein the thickness of each sample was 50mm, and the results were as follows:
| density, kg/m3 | Compressive strength, Mpa | Flexural strength, Mpa | |
| Example 5 | 1780 | 65.3 | 9.8 |
| Comparative example 1 | 1800 | 55.7 | 7.1 |
| Comparative example 2 | 1790 | 59.4 | 7.8 |
| Comparative example 3 | 1780 | 60.3 | 8.3 |
The sound-absorbing material obtained in example 5 and the sound-absorbing materials obtained in comparative examples 1 to 3 were subjected to sound-absorbing property tests in which the thickness of each sample was 50mm, and the results were as follows:
from the above results, it can be seen that: the sound-absorbing material obtained by the invention has the advantages of extremely high strength, excellent bending resistance, good bearing and compression resistance characteristics, small deformation stress, reduced deformation risk after use, no influence of environment and time on the sound-absorbing coefficient, long-term stable sound-absorbing performance, suitability for high and low sound conditions, sound-absorbing coefficient of 0.93, and particular suitability for sound insulation and noise reduction of a centrifuge for producing electric poles.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The noise-absorbing material for the noise reduction of the centrifuge is characterized by comprising the following raw materials in parts by weight: 60-100 parts of glass fiber, 30-50 parts of basalt fiber, 10-16 parts of acetate fiber, 1-8 parts of ceramic fiber, 1-5 parts of polyamide fiber, 1-5 parts of quartz glass fiber, 6-10 parts of coconut shell activated carbon, 1-2 parts of gamma molecular sieve, 1-2 parts of methyl cellulose, 1-2 parts of coupling agent, 1-2 parts of N-oleoyl-N-methyltaurate, 2-4 parts of sodium silicate, 1-2 parts of calcium oxide, 10-20 parts of cement and 2-4 parts of aluminum powder paste.
2. The sound absorbing material for noise reduction of centrifuges as set forth in claim 1, wherein the coupling agent is a silane coupling agent and/or a titanate coupling agent.
3. The sound absorbing material for noise reduction of a centrifuge according to claim 1, wherein the cement is portland cement.
4. A method for preparing a noise-reducing material for a centrifuge according to any one of claims 1 to 3, comprising the steps of:
s1, uniformly weaving glass fibers, basalt fibers, acetate fibers, ceramic fibers, polyamide fibers and quartz glass fibers into a fiber mesh layer;
s2, ball-milling coconut shell activated carbon, a gamma molecular sieve and methyl cellulose until the coconut shell activated carbon, the gamma molecular sieve and the methyl cellulose pass through a sieve of 300-400 meshes, adjusting the water content of the system to 80-90%, stirring for 2-4h at the stirring speed of 500-600r/min, stirring in vacuum for 10-20min, aging for 5-10h, stirring at normal pressure, performing pulsed microwave irradiation for 10-20min at the temperature of 600-700 ℃ in the pulsed microwave irradiation process, adjusting the water content of the system to 30-36%, and performing spray drying to obtain a prefabricated material;
s3, adding the prefabricated material into an ethanol solution, adding a coupling agent and N-oleoyl-N-methyl sodium taurate, uniformly mixing, adjusting the pH value of the system to 5-6, stirring, immersing the fiber mesh layer in the solution, performing ultrasonic treatment for 1-2h with the ultrasonic power of 300-400W, adding sodium silicate, calcium oxide and cement, uniformly stirring, adding aluminum powder paste, uniformly stirring, and sequentially performing molding, demolding and drying to obtain the sound absorbing material for reducing the noise of the centrifuge.
5. The method of preparing a sound-absorbing material for noise reduction in a centrifuge as set forth in claim 4, wherein the fiber average diameter of the fiber web layer is 10 to 200 μm in S1.
6. The method of claim 4, wherein the mass per unit area of the fiber web layer in S1 is 50-100g/m2The air permeability is 810-850 mu m/Pa.s.
7. The method of preparing a sound-absorbing material for noise reduction in a centrifuge as set forth in claim 4, wherein the vacuum pressure is 20 to 60kPa during the vacuum agitation at S2.
8. The method for preparing a sound absorbing material for noise reduction of a centrifuge as claimed in claim 4, wherein the irradiation of the pulsed microwave of S2 is suspended for 4-6S every 1 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011250402.9A CN112321266A (en) | 2020-11-11 | 2020-11-11 | Sound-absorbing material for noise reduction of centrifugal machine and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011250402.9A CN112321266A (en) | 2020-11-11 | 2020-11-11 | Sound-absorbing material for noise reduction of centrifugal machine and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112321266A true CN112321266A (en) | 2021-02-05 |
Family
ID=74318930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011250402.9A Pending CN112321266A (en) | 2020-11-11 | 2020-11-11 | Sound-absorbing material for noise reduction of centrifugal machine and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112321266A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114228029A (en) * | 2021-10-27 | 2022-03-25 | 江西行新汽车科技股份有限公司 | Production process of silencing engine cover |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3995729A (en) * | 1973-08-07 | 1976-12-07 | Triumph Werke Nurnberg A.G. | Impactless printing apparatus |
| CN1037749A (en) * | 1988-05-10 | 1989-12-06 | 纳幕尔杜邦公司 | The composite of the glass fibre of wet moulding and thermoplastic fibre blend |
| CN101163827A (en) * | 2004-12-29 | 2008-04-16 | 欧文斯科宁知识产权资产有限公司 | Thermoplastic composites with improved sound absorbing capabilities |
| WO2011013427A1 (en) * | 2009-07-31 | 2011-02-03 | 名古屋油化株式会社 | Sound-absorbing adhesive sheet, sound-absorbing skin material, sound-absorbing material, and molded sound-absorbing material |
| CN103342985A (en) * | 2013-06-06 | 2013-10-09 | 贵阳天龙摩擦材料有限公司 | Friction material without asbestos layer and manufacturing method |
| CN103435308A (en) * | 2013-08-13 | 2013-12-11 | 中国矿业大学 | Composite board and manufacturing method thereof |
| CN107266122A (en) * | 2016-04-08 | 2017-10-20 | 南京唯才新能源科技有限公司 | A kind of fibrofelt enhancing aerogel foam concrete and preparation method thereof |
| CN107266107A (en) * | 2016-04-08 | 2017-10-20 | 南京唯才新能源科技有限公司 | A kind of fibrofelt enhancing aeroge foamed concrete and preparation method thereof |
| CN108570859A (en) * | 2018-04-20 | 2018-09-25 | 苏州宏久航空防热材料科技有限公司 | A kind of corrosion-and high-temp-resistant glass fabric |
| CN110997308A (en) * | 2017-07-31 | 2020-04-10 | 捷恩智株式会社 | Laminated sound absorbing material |
| CN210589897U (en) * | 2019-05-17 | 2020-05-22 | 广西中久电力科技有限责任公司 | Be used for wire pole production to use raw materials mixing arrangement |
| CN111648036A (en) * | 2020-06-05 | 2020-09-11 | 河北传媒学院 | Polyester fiber sound-absorbing body capable of absorbing harmful substances and preparation method thereof |
-
2020
- 2020-11-11 CN CN202011250402.9A patent/CN112321266A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3995729A (en) * | 1973-08-07 | 1976-12-07 | Triumph Werke Nurnberg A.G. | Impactless printing apparatus |
| CN1037749A (en) * | 1988-05-10 | 1989-12-06 | 纳幕尔杜邦公司 | The composite of the glass fibre of wet moulding and thermoplastic fibre blend |
| CN101163827A (en) * | 2004-12-29 | 2008-04-16 | 欧文斯科宁知识产权资产有限公司 | Thermoplastic composites with improved sound absorbing capabilities |
| WO2011013427A1 (en) * | 2009-07-31 | 2011-02-03 | 名古屋油化株式会社 | Sound-absorbing adhesive sheet, sound-absorbing skin material, sound-absorbing material, and molded sound-absorbing material |
| CN103342985A (en) * | 2013-06-06 | 2013-10-09 | 贵阳天龙摩擦材料有限公司 | Friction material without asbestos layer and manufacturing method |
| CN103435308A (en) * | 2013-08-13 | 2013-12-11 | 中国矿业大学 | Composite board and manufacturing method thereof |
| CN107266122A (en) * | 2016-04-08 | 2017-10-20 | 南京唯才新能源科技有限公司 | A kind of fibrofelt enhancing aerogel foam concrete and preparation method thereof |
| CN107266107A (en) * | 2016-04-08 | 2017-10-20 | 南京唯才新能源科技有限公司 | A kind of fibrofelt enhancing aeroge foamed concrete and preparation method thereof |
| CN110997308A (en) * | 2017-07-31 | 2020-04-10 | 捷恩智株式会社 | Laminated sound absorbing material |
| CN108570859A (en) * | 2018-04-20 | 2018-09-25 | 苏州宏久航空防热材料科技有限公司 | A kind of corrosion-and high-temp-resistant glass fabric |
| CN210589897U (en) * | 2019-05-17 | 2020-05-22 | 广西中久电力科技有限责任公司 | Be used for wire pole production to use raw materials mixing arrangement |
| CN111648036A (en) * | 2020-06-05 | 2020-09-11 | 河北传媒学院 | Polyester fiber sound-absorbing body capable of absorbing harmful substances and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 杨明等: "纤维吸声材料的研究进展", 《化工新型材料》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114228029A (en) * | 2021-10-27 | 2022-03-25 | 江西行新汽车科技股份有限公司 | Production process of silencing engine cover |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107312166B (en) | A kind of modified PET polyester and its preparation method and application | |
| CN108641361B (en) | Fiber-reinforced organic silicon aerogel heat-insulation composite material and preparation method thereof | |
| CN111960766B (en) | High-strength recycled concrete and preparation method thereof | |
| CN103482994B (en) | Preparation method of carbon fiber-reinforced quartz ceramic-based composite material | |
| CN112321266A (en) | Sound-absorbing material for noise reduction of centrifugal machine and preparation method thereof | |
| CN102838844B (en) | Vegetable fiber-reinforced biomass resin-based foam plate and preparation method thereof | |
| CN115321939B (en) | Preparation method of broadband resonance efficient sound absorption brick | |
| CN114164557B (en) | Carbon fiber hard felt and preparation method thereof | |
| CN101740186B (en) | Method for preparing double-stage formed high-voltage compound insulator solid core rod | |
| CN113956000A (en) | Cement kiln tail gas carbonization building prefabricated product and preparation method thereof | |
| CN114315280B (en) | Modified aerogel foamed cement material and preparation method thereof | |
| EP3018110A1 (en) | Method for producing high-strength xonotlite insulation material with low thermal conductivity | |
| CN110303158A (en) | A kind of novel method for preparing foamed aluminium | |
| CN112830747B (en) | Environment-friendly anti-freezing concrete and preparation method thereof | |
| CN102701691B (en) | Heat insulation type tire mold casting gypsum powder and preparation process thereof | |
| CN112645736B (en) | Lightweight concrete and preparation method thereof | |
| CN102442832A (en) | Rapid-hardening foam concrete block and its production method | |
| CN106082925B (en) | A kind of unburned pearl stone sound absorbing baffle of low temperature and preparation method thereof | |
| CN115849928B (en) | Injection-molded aluminum oxide fiber reinforced composite material containing lanthanum phosphate interface layer and preparation method thereof | |
| CN112010626A (en) | Self-compacting freeze-thaw-resistant concrete and preparation method thereof | |
| CN111606735A (en) | Light heat-preservation composite foam concrete and preparation method thereof | |
| CN115231897B (en) | Method for preparing carbon fiber and carbon nanotube composite silicon aerogel based on freeze drying by taking water glass as silicon source | |
| CN111943532B (en) | Geopolymer-based organic-inorganic composite cementing material and forming preparation method thereof | |
| CN115432961A (en) | Cement-based material carbon fixation enhancing method and product thereof | |
| CN112321184B (en) | Preparation method of recycled aggregate for prefabricated building |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210205 |
|
| RJ01 | Rejection of invention patent application after publication |