CN108191451A - A kind of high intensity, porous sound-absorbing material and preparation method thereof - Google Patents

A kind of high intensity, porous sound-absorbing material and preparation method thereof Download PDF

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CN108191451A
CN108191451A CN201810204961.2A CN201810204961A CN108191451A CN 108191451 A CN108191451 A CN 108191451A CN 201810204961 A CN201810204961 A CN 201810204961A CN 108191451 A CN108191451 A CN 108191451A
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parts
absorbing material
high intensity
sound
porous sound
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汪金云
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Hefei Zhuochuang New Materials Co Ltd
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Hefei Zhuochuang New Materials Co Ltd
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    • 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
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Abstract

The invention discloses a kind of high intensity, porous sound-absorbing materials and preparation method thereof, and in terms of parts by weight, the sound-absorbing material mainly includes following components：22 42 parts of steel-making slag powder, 14 23 parts of flyash, 13 26 parts of pyrophillite, 5 10 parts of dolomite, 8 16 parts of polystyrene, 1.3 6.5 parts of fiber, 1.5 3.8 parts of foaming agent, 0.2 1.4 parts of gelling agent.The high intensity, porous sound-absorbing material of the present invention is excellent with sound absorbing performance and intensity is high, average sound absorption coefficient >=0.8, compression strength >=7MPa, unit weight≤780kg/m3.And preparation process is simple, industrialized production easy to implement is with a wide range of applications.

Description

A kind of high intensity, porous sound-absorbing material and preparation method thereof
Technical field
The present invention relates to sound-absorbing material technical fields, and in particular to a kind of high intensity, porous sound-absorbing material and its preparation side Method.
Background technology
With the fast development of China's economy, people increasingly pay attention to the quality of life of oneself, the improvement of noise pollution by Gradually receive attention.Noise can bring the hearing of people direct damage or even make one to lose hearing, while can also influence people Cardiovascular system and nervous system bring serious influence to people's health life.
Sound-absorbing porous material can be divided into fiber-like and block class.The sound absorbing performance of inorganic fibers such as mineral wool and rock wool It is excellent, and unit weight is small, it is compressible the advantages that become the main product of sound-absorbing porous material.But inorganic fibers exist easy It comes off, damage the problems such as health, the above problem hinders the extensive use and development of these sound-absorbing materials.
Porous ceramics is a kind of containing compared with concrete dynamic modulus, is reached using the pore structure bond material nature in material The inorganic non-metallic material of required physical and chemical performance.The excellent porous ceramics of sound absorbing performance must have suitably aobvious gas Porosity and pore-size distribution.Porous ceramics sound-absorbing material has many advantages, such as that high-low temperature resistant, corrosion-resistant, medium-high frequency acoustic absorptivity is big, tool There is good development prospect.
At present, porous sound absorption ceramic material frequently with preparation method there is granulation mass area method, addition pore creating material method, gas to send out It is soaked, or porous ceramics sound-absorbing material made from above-mentioned preparation method, with higher compression strength, but porosity is low, inhales Acoustic performance is poor or sound absorbing performance is excellent, but compression strength is not high.
Therefore, it is necessary to provide the high intensity, porous sound-absorbing material and its system that a kind of sound absorbing performance is excellent, compression strength is high Preparation Method, to solve problems of the prior art.
Invention content
It is excellent the object of the present invention is to provide a kind of sound absorbing performance and with high-strength in view of the above-mentioned analysis to the prior art Porous ceramics sound-absorbing material of degree and preparation method thereof, and preparation method is simple, suitable for mass producing and applying.
In order to achieve the above object, the present invention is achieved through the following technical solutions：
A kind of high intensity, porous sound-absorbing material, in terms of parts by weight, the sound-absorbing material mainly includes following components：
22-42 parts of steel-making slag powder；
14-23 parts of flyash；
13-26 parts of pyrophillite；
5-10 parts of dolomite；
8-16 parts of polystyrene；
1.3-6.5 parts of fiber；
1.5-3.8 parts of foaming agent；
0.2-1.4 parts of gelling agent.
Preferably, in terms of parts by weight, the sound-absorbing material mainly includes following components：
30 parts of steel-making slag powder；
18.5 parts of flyash；
19 parts of pyrophillite；
7.5 parts of dolomite；
12 parts of polystyrene；
3.8 parts of fiber；
2.6 parts of foaming agent；
0.8 part of gelling agent.
Preferably, the flyash is fine-ground fly-ash, refer to that its fineness tails over the powder less than 10% for 45 μm of square hole screens Shape object.
Preferably, the fiber is the polypropylene fibre of length specification 3-9mm.
Preferably, it is 1 that the foaming agent, which is mass ratio,：（0.4-1.2）Lauryl sodium sulfate and fatty alcohol polyoxy The composition of ethylene ether sodium sulfate.
Preferably, the gelling agent is sodium alginate.
The present invention also provides a kind of preparation methods of high intensity, porous sound-absorbing material, include the following steps：
Step 1：22-42 parts of steel-making slag powder, 14-23 parts of flyash, 13-26 parts of pyrophillite, dolomite 5- are weighed according to given number 10 parts, 8-16 parts of polystyrene, 1.3-6.5 parts of fiber, 0.2-1.4 parts of gelling agent, after ball milling be made slurry；
Step 2：1.5-3.8 parts of foaming agent is added in slurry obtained, is heated to 70-100 DEG C, keeps the temperature 10- 20min, then Carry out mechanical agitation, mixing speed 1000-1300r/min, mixing time 5-10min；
Step 3：In slurry injection mold after mechanical agitation is foamed, demoulded after 40-60min, then the 10- that dries in the shade naturally Processing is dried in 20h, and drying temperature is 40-60 DEG C, obtains dry blank；
Step 4：Dried crude green body is entered into klining into firing temperature is 1130-1190 DEG C, keeps the temperature 1.5-4.5h, the firing Temperature concrete operations are：Heating rate is 1.5 DEG C/min during less than 400 DEG C, and heating rate is 1.0 DEG C/min at 400-800 DEG C, It is 3 DEG C/min after 800 DEG C, and keeps the temperature 1.5-4.5h to get to the high intensity, porous sound-absorbing material.
Preferably, in step 1, material ball ratio is 1 in the mechanical milling process：1.6-2, Ball-milling Time 2-4h.
Compared with prior art, the present invention the present invention has following advantageous effect：
（1）The high intensity, porous sound-absorbing material of the present invention is excellent with sound absorbing performance and intensity is high, average sound absorption coefficient >=0.8, resists Compressive Strength >=7MPa, unit weight≤780kg/m3.By using steel-making slag powder, flyash and pyrophillite as primary raw material, and pass through ball Mill makes it mix, so as to which it be made more to be closely linked, meanwhile, the intensity of sound-absorbing material is improved, and gelling agent exists Can be completely dissolved at a temperature of 70 DEG C or so, after cooling can complete gelation in a short time, there is enough intensity to bear wet base Weight, and do not need in sintering process special dumping processing, convenient for technological operation, and polystyrene is as pore-creating Agent while sound-absorbing material intensity is not influenced, can further improve the porosity of sound-absorbing material.
（2）The polypropylene fibre that the present invention adds in improves the cracking resistance of product, improves product because of porous presence Terms of mechanics the shortcomings that；
（3）The high intensity, porous sound-absorbing material preparation process of the present invention is simple, industrialized production easy to implement, widely should have Use prospect.
Specific embodiment
Form by the following examples is described in further detail, but should not be by this above of present invention again The range for being interpreted as the above-mentioned theme of the present invention is only limitted to following embodiment, all based on the technology realized belonging to the above of the present invention It all belongs to the scope of the present invention.
Embodiment 1
A kind of high intensity, porous sound-absorbing material, in terms of parts by weight, the sound-absorbing material mainly includes following components：
22 parts of steel-making slag powder；
14 parts of flyash；
13 parts of pyrophillite；
5 parts of dolomite；
8 parts of polystyrene；
1.3 parts of fiber；
1.5 parts of foaming agent；
0.2 part of gelling agent.
Wherein, the flyash is fine-ground fly-ash, refers to that its fineness tails over the powder less than 10% for 45 μm of square hole screens.
Wherein, the fiber is the polypropylene fibre of length specification 3-9mm.
Wherein, it is 1 that the foaming agent, which is mass ratio,：0.4 lauryl sodium sulfate and fatty alcohol polyoxyethylene ether sulfuric acid The composition of sodium.
Wherein, the gelling agent is sodium alginate.
The present invention also provides a kind of preparation methods of high intensity, porous sound-absorbing material, include the following steps：
Step 1：Steel-making slag powder, flyash, pyrophillite, dolomite, polystyrene, fiber, gelling agent, ball are weighed according to given number Slurry is made after mill；
Step 2：Foaming agent is added in slurry obtained, is heated to 70 DEG C, 10min is kept the temperature, then carries out mechanical agitation, is stirred Speed 1000r/min, mixing time 5min；
Step 3：It in slurry injection mold after mechanical agitation is foamed, is demoulded after 40min, then 10h progress of drying in the shade naturally It is dried, drying temperature is 40 DEG C, obtains dry blank；
Step 4：Dried crude green body is entered into klining into firing temperature is 1130 DEG C, keeps the temperature 1.5h, and the firing temperature is specifically grasped As：Heating rate is 1.5 DEG C/min during less than 400 DEG C, and heating rate is 1.0 DEG C/min at 400-800 DEG C, after 800 DEG C For 3 DEG C/min, and 1.5h is kept the temperature to get to the high intensity, porous sound-absorbing material.
Wherein, in step 1, material ball ratio is 1 in the mechanical milling process：1.6, Ball-milling Time 2h.
Embodiment 2
A kind of high intensity, porous sound-absorbing material, in terms of parts by weight, the sound-absorbing material mainly includes following components：
42 parts of steel-making slag powder；
23 parts of flyash；
26 parts of pyrophillite；
10 parts of dolomite；
16 parts of polystyrene；
6.5 parts of fiber；
3.8 parts of foaming agent；
1.4 parts of gelling agent.
Wherein, the flyash is fine-ground fly-ash, refers to that its fineness tails over the powder less than 10% for 45 μm of square hole screens.
Wherein, the fiber is the polypropylene fibre of length specification 3-9mm.
Wherein, it is 1 that the foaming agent, which is mass ratio,：1.2 lauryl sodium sulfate and fatty alcohol polyoxyethylene ether sulfuric acid The composition of sodium.
Preferably, the gelling agent is sodium alginate.
The present invention also provides a kind of preparation methods of high intensity, porous sound-absorbing material, include the following steps：
Step 1：Steel-making slag powder, flyash, pyrophillite, dolomite, polystyrene, fiber, gelling agent, ball are weighed according to given number Slurry is made after mill；
Step 2：Foaming agent is added in slurry obtained, is heated to 100 DEG C, 20min is kept the temperature, then carries out mechanical agitation, stir Mix speed 1300r/min, mixing time 10min；
Step 3：It in slurry injection mold after mechanical agitation is foamed, is demoulded after 60min, then 20h progress of drying in the shade naturally It is dried, drying temperature is 60 DEG C, obtains dry blank；
Step 4：Dried crude green body is entered into klining into firing temperature is 1190 DEG C, keeps the temperature 4.5h, and the firing temperature is specifically grasped As:Heating rate is 1.5 DEG C/min during less than 400 DEG C, and heating rate is 1.0 DEG C/min at 400-800 DEG C, 800 DEG C it Afterwards for 3 DEG C/min, and 4.5h is kept the temperature to get to the high intensity, porous sound-absorbing material.
Wherein, in step 1, material ball ratio is 1 in the mechanical milling process：2, Ball-milling Time 4h.
Embodiment 3
A kind of high intensity, porous sound-absorbing material, in terms of parts by weight, the sound-absorbing material mainly includes following components：
30 parts of steel-making slag powder；
18.5 parts of flyash；
19 parts of pyrophillite；
7.5 parts of dolomite；
12 parts of polystyrene；
3.8 parts of fiber；
2.6 parts of foaming agent；
0.8 part of gelling agent.
Wherein, the flyash is fine-ground fly-ash, refers to that its fineness tails over the powder less than 10% for 45 μm of square hole screens.
Wherein, the fiber is the polypropylene fibre of length specification 3-9mm.
Wherein, it is 1 that the foaming agent, which is mass ratio,：0.8 lauryl sodium sulfate and fatty alcohol polyoxyethylene ether sulfuric acid The composition of sodium.
Wherein, the gelling agent is sodium alginate.
The present invention also provides a kind of preparation methods of high intensity, porous sound-absorbing material, include the following steps：
Step 1：Steel-making slag powder, flyash, pyrophillite, dolomite, polystyrene, fiber, gelling agent, ball are weighed according to given number Slurry is made after mill；
Step 2：Foaming agent is added in slurry obtained, is heated to 85 DEG C, 15min is kept the temperature, then carries out mechanical agitation, is stirred Speed 1150r/min, mixing time 7.5min；
Step 3：It in slurry injection mold after mechanical agitation is foamed, is demoulded after 50, then 10-20h progress of drying in the shade naturally It is dried, drying temperature is 50 DEG C, obtains dry blank；
Step 4：Dried crude green body is entered into klining into firing temperature is 1160 DEG C, keeps the temperature 2.8h, and the firing temperature is specifically grasped As:Heating rate is 1.5 DEG C/min during less than 400 DEG C, and heating rate is 1.0 DEG C/min at 400-800 DEG C, 800 DEG C it Afterwards for 3 DEG C/min, and 2.8h is kept the temperature to get to the high intensity, porous sound-absorbing material.
Wherein, in step 1, material ball ratio is 1 in the mechanical milling process：1.8, Ball-milling Time 3h.
To sum up, the high intensity, porous sound-absorbing material of the present invention is excellent with sound absorbing performance and intensity is high, and average sound absorption coefficient >= 0.8, compression strength >=7MPa, unit weight≤780kg/m3.By using steel-making slag powder, flyash and pyrophillite as primary raw material, and It is made to mix by ball milling, so as to which it be made more to be closely linked, meanwhile, improve the intensity of sound-absorbing material, and glue Solidifying agent can be completely dissolved at a temperature of 70 DEG C or so, after cooling can complete gelation in a short time, there is enough intensity to hold By the weight of wet base, and special dumping processing is not needed in sintering process, convenient for technological operation, and polystyrene conduct Pore creating material while sound-absorbing material intensity is not influenced, can further improve the porosity of sound-absorbing material.
It is merely a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to aforementioned implementation described in upper The present invention is described in detail in example, for those skilled in the art, still can be to foregoing embodiments Recorded technical solution modifies or carries out equivalent replacement to which part technical characteristic.All spirit in the present invention Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.

Claims (8)

1. a kind of high intensity, porous sound-absorbing material, which is characterized in that in terms of parts by weight, the sound-absorbing material mainly includes following Component：
22-42 parts of steel-making slag powder；
14-23 parts of flyash；
13-26 parts of pyrophillite；
5-10 parts of dolomite；
8-16 parts of polystyrene；
1.3-6.5 parts of fiber；
1.5-3.8 parts of foaming agent；
0.2-1.4 parts of gelling agent.
2. high intensity, porous sound-absorbing material according to claim 1, which is characterized in that in terms of parts by weight, the sound absorption Material mainly includes following components：
30 parts of steel-making slag powder；
18.5 parts of flyash；
19 parts of pyrophillite；
7.5 parts of dolomite；
12 parts of polystyrene；
3.8 parts of fiber；
2.6 parts of foaming agent；
0.8 part of gelling agent.
3. high intensity, porous sound-absorbing material according to claim 1, which is characterized in that the flyash is levigate fine coal Ash refers to that its fineness tails over the powder less than 10% for 45 μm of square hole screens.
4. high intensity, porous sound-absorbing material according to claim 1, which is characterized in that the fiber is length specification 3- The polypropylene fibre of 9mm.
5. high intensity, porous sound-absorbing material according to claim 1, which is characterized in that the foaming agent is that mass ratio is 1： （0.4-1.2）Lauryl sodium sulfate and sodium sulfate of polyethenoxy ether of fatty alcohol composition.
6. high intensity, porous sound-absorbing material according to claim 1, which is characterized in that the gelling agent is sodium alginate.
7. a kind of preparation method according to the high intensity, porous sound-absorbing material of claim 1-6 any one of them, which is characterized in that Include the following steps：
Step 1：22-42 parts of steel-making slag powder, 14-23 parts of flyash, 13-26 parts of pyrophillite, dolomite 5- are weighed according to given number 10 parts, 8-16 parts of polystyrene, 1.3-6.5 parts of fiber, 0.2-1.4 parts of gelling agent, after ball milling be made slurry；
Step 2：1.5-3.8 parts of foaming agent is added in slurry obtained, is heated to 70-100 DEG C, keeps the temperature 10- 20min, then Carry out mechanical agitation, mixing speed 1000-1300r/min, mixing time 5-10min；
Step 3：In slurry injection mold after mechanical agitation is foamed, demoulded after 40-60min, then the 10- that dries in the shade naturally Processing is dried in 20h, and drying temperature is 40-60 DEG C, obtains dry blank；
Step 4：Dried crude green body is entered into klining into firing temperature is 1130-1190 DEG C, keeps the temperature 1.5-4.5h, the firing Temperature concrete operations are：Heating rate is 1.5 DEG C/min during less than 400 DEG C, and heating rate is 1.0 DEG C/min at 400-800 DEG C, It is 3 DEG C/min after 800 DEG C, and keeps the temperature 1.5-4.5h to get to the high intensity, porous sound-absorbing material.
8. the preparation method of high intensity, porous sound-absorbing material according to claim 7, which is characterized in that described in step 1 Mechanical milling process in material ball ratio be 1：1.6-2, Ball-milling Time 2-4h.
CN201810204961.2A 2018-03-13 2018-03-13 A kind of high intensity, porous sound-absorbing material and preparation method thereof Withdrawn CN108191451A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109704724A (en) * 2018-08-27 2019-05-03 苏州谦合诚智能科技有限公司 A kind of porous sound absorption new material and preparation method thereof
CN112062594A (en) * 2020-08-19 2020-12-11 华南理工大学 Light ceramic sound absorption material with excellent middle and low frequency sound absorption performance and preparation method thereof
CN113072391A (en) * 2021-04-22 2021-07-06 四川双铁科技有限公司 Full-solid waste-based porous ceramic sound-absorbing material and preparation method thereof
CN114573366A (en) * 2022-03-28 2022-06-03 武汉理碳环保科技有限公司 Forsterite porous body for carbon neutralization and preparation method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109704724A (en) * 2018-08-27 2019-05-03 苏州谦合诚智能科技有限公司 A kind of porous sound absorption new material and preparation method thereof
CN112062594A (en) * 2020-08-19 2020-12-11 华南理工大学 Light ceramic sound absorption material with excellent middle and low frequency sound absorption performance and preparation method thereof
CN112062594B (en) * 2020-08-19 2021-09-21 华南理工大学 Light ceramic sound absorption material with excellent middle and low frequency sound absorption performance and preparation method thereof
CN113072391A (en) * 2021-04-22 2021-07-06 四川双铁科技有限公司 Full-solid waste-based porous ceramic sound-absorbing material and preparation method thereof
CN114573366A (en) * 2022-03-28 2022-06-03 武汉理碳环保科技有限公司 Forsterite porous body for carbon neutralization and preparation method thereof

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Application publication date: 20180622