CN109081667A - A kind of composite sound-absorbing material - Google Patents
A kind of composite sound-absorbing material Download PDFInfo
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- CN109081667A CN109081667A CN201810982340.7A CN201810982340A CN109081667A CN 109081667 A CN109081667 A CN 109081667A CN 201810982340 A CN201810982340 A CN 201810982340A CN 109081667 A CN109081667 A CN 109081667A
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- parts
- absorbing material
- composite sound
- wood fibre
- sound
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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
- 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
- C04B28/14—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 calcium sulfate cements
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The present invention provides a kind of composite sound-absorbing materials, it is made of following parts by weight raw material: 40~50 parts of gypsum mortar, 20~30 parts of diatom ooze, 16~20 parts of wood fibre, 3~5 parts of carboxymethyl cellulose, 1~3 part of stabilizer, 5~9 parts of foaming agent, 14~18 parts of water.The invention has the benefit that the addition of (1) due to glass fibre, the mechanical strength of the composite sound-absorbing material have obtained further raising, while improving corrosion resistance of the invention；(2) after wood fibre being added simultaneously, diatom ooze and wood fibre are since respectively characteristic is different for material, in conjunction with the small hole of formation, the effects of frictional resistance of air and hole, the viscosity resistance of air, heat transfer, sound is gradually decayed, to achieve the purpose that sound absorption, sqouynd absorption lowering noise is realized using porous characteristic；(3) addition of diatom ooze greatly reduces composite sound-absorbing material surface toxic volatile organic matter simultaneously, enhances its environmental-protecting performance.
Description
Technical field
The invention belongs to build sound absorption field, and in particular to a kind of composite sound-absorbing material.
Background technique
With the development of modern industry and transportation business and the enhancing of environmental consciousness, people want acoustic environment
Ask also higher and higher, it is urgently to be solved that sqouynd absorption lowering noise is increasingly becoming a related high-tech, environment and mankind's coordinated development
Important topic.Noise control pollution is used mainly using the measure of control sound source and its route of transmission, receptor protection etc.
Sound-absorbing material is one of most important sqouynd absorption lowering noise measure, and wherein porous material is widely used a kind of sound-absorbing material.Currently,
Become the important directions of sound-absorbing material research using inexpensive raw material, new process, new technology development novel porous materials.
Wood fibre is organic wadding fibrous object that natural reproducible timber is processed by chemical treatment, Mechanical Method
Matter is widely used in the fields such as concrete mortar, plastering, wood pulp sponge, asphalt roads, to prevent coating cracking, improve protect
Stability that is aqueous, improving production and the conformance of construction, increase intensity, enhancing have good effect to the adhesive force on surface etc.
Fruit.Due to the capillarity of fibre structure, the moisture of internal system is promptly transferred to pulp surface and interface so that slurry
Uniform moisture distribution inside material significantly reduces skinning.And adhesion strength and surface strength are significantly improved, this machine
Reason also due in drying process the reduction of tension and obviously play the role of cracking resistance.Wood fibre dimensional stability and thermal stability
Play the role of good thermal-insulating and anti-cracking in thermal insulation material.Wood fibre utilization rate is improved, is economized on resources to enterprise, protection ring
Border, increasing economic efficiency is of great significance.
Glass fibre is extraordinary metal material alternative materials, with the rapid development of market economy, glass fibre at
For the essential raw material of industries such as building, traffic, electronics, electrical, chemical industry, metallurgy, environmental protection, national defence.Glass fibre
Higher than organic fiber heatproof, non-ignitable, anti-corruption is heat-insulated, sound-proofing is good, and tensile strength is high, and electrical insulating property is good.Due in multiple fields
It is used widely, therefore, glass fibre is increasingly subject to the attention of people.Based on this, it is necessary to it is good to provide a kind of sound absorption effect
And excellent in mechanical performance, while having both fire prevention, waterproof, ageing-resistant, resistant to chemical etching, environmentally protective novel sound absorption for building
Material.Material as sound-absorbing material should select as far as possible nonflammable, non-aging, resistant to chemical etching, anti-pollution, hygroscopicity low
Material.
Existing sound-absorbing material mechanical strength is low, and corrosion resistance is low；Sound absorption effect is poor, and the surface after sound absorption finished product is made
Toxic volatile high organic content in air, environmental-protecting performance are poor.
Summary of the invention
Technical problem to be solved by the present invention lies in: existing sound-absorbing material mechanical strength is low, and corrosion resistance is low.For
This, provides a kind of composite sound-absorbing material.
In order to solve the above technical problems, the technical solution of the present invention is as follows:
A kind of composite sound-absorbing material is made of following parts by weight raw material: 40~50 parts of gypsum mortar, diatom ooze 20~30
Part, 16~20 parts of wood fibre, 3~5 parts of carboxymethyl cellulose, 1~3 part of stabilizer, 5~9 parts of foaming agent, 14~18 parts of water.
Further, be made of following parts by weight raw material: 40 parts of gypsum mortar, 20 parts of diatom ooze, 16 parts of wood fibre,
3 parts of carboxymethyl cellulose, 1 part of stabilizer, 5 parts of foaming agent, 14 parts of water.
Further, be made of following parts by weight raw material: 50 parts of gypsum mortar, 30 parts of diatom ooze, 20 parts of wood fibre,
5 parts of carboxymethyl cellulose, 3 parts of stabilizer, 9 parts of foaming agent, 18 parts of water.
Further, be made of following parts by weight raw material: 45 parts of gypsum mortar, 25 parts of diatom ooze, 18 parts of wood fibre,
4 parts of carboxymethyl cellulose, 2 parts of stabilizer, 7 parts of foaming agent, 16 parts of water.
Further, the gypsum mortar is the mixture that cement and glass fibre are 1:1 according to mass parts ratio.
Further, the foaming agent is sodium bicarbonate.
Further, the stabilizer is silicone oil.
Further, a method of preparing above-mentioned composite sound absorbing, comprise the following production steps that (1) by above-mentioned parts by weight
Several wood fibres pours into pulverizer, and 35~45min of grinding obtains fineness≤0.5mm powdery wood fibre；(2) by step (1)
Middle gained powdery wood fibre adds above-mentioned heavy in conjunction with the raw material diatom ooze of above-mentioned parts by weight, carboxymethyl cellulose, water
Measure number stabilizer and foaming agent, stirred in mixing and blending machine it is full and uniform after at half dry mixture；(3) gained is mixed
Object pours into mold, is sent to pressurization in pressuring machine, then be dried up to the composite sound-absorbing material.
Further, the drying temperature in the step (3) is 50~60 DEG C.
The main raw material(s) of diatom ooze is the diatom mineral diatomite formed after 1 years, and diatom is that one kind lives in sea
Algae in ocean, lake.The formaldehyde in room can be completely eliminated.Diatom ooze is adjustable humidity and temperature reduces air-conditioning, odor eliminator
Deng utilization rate, play protection atmosphere, comfortable living space is created in energy saving effect.
Carboxymethyl cellulose is water-soluble, forms gluing shape liquid, there is thickening, film forming, gluing, water tariff collection.
Diatom mineral are a kind of nanoscale porous materials (about 0.1~0.2 μm of micro-pore diameter), and porosity is up to 90%,
Rule is fitly arranged in round and aciculiform, and the fine hole number on unit area is thousands of times out more than charcoal.It is prominent
Molecular lattice structure feature, determine its unique function, between the gap and external world is interconnected.Diatom ooze and wood fibre
In conjunction with small hole is formed, the porosity of sound-absorbing material is further improved.In the present invention, the wood fibre specific gravity of addition
There is small, large specific surface area excellent heat preservation, heat-insulated, sound insulation, insulation and permeability, thermal expansion not to flake uniformly and not crack；
Higher wet film intensity and coverage effect.
Glass fibre is a kind of inorganic non-metallic material haveing excellent performance, and has good insulating properties, heat resistance, anticorrosive
Property and mechanical strength.It is pyrophillite, quartz sand, lime stone, dolomite, bechilite, seven kinds of ores of boromagnesite be raw material through height
Caused by the techniques systems such as warm melted, wire drawing, doff, woven fabric, the diameter of monofilament is several microns to twenties microns, quite
In the 1/20-1/5 of a hairline, every bundle fiber precursor is all made of hundreds of even thousands of monofilament.Glass fibre adds
Enter to not only increase the mechanical strength of the composite sound-absorbing material, also substantially increases the corrosion-resistant of its composite sound-absorbing material surface
Property, extend its service life.
The invention has the benefit that the addition of (1) due to glass fibre, the mechanical strength of the composite sound-absorbing material obtain
Further raising, while improving corrosion resistance of the invention；(2) after wood fibre being added simultaneously, diatom ooze and wooden
Fiber is since respectively characteristic is different for material, in conjunction with the small hole of formation, the viscous resistance of the frictional resistance, air of air and hole
The effects of power, heat transfer, sound is gradually decayed, to achieve the purpose that sound absorption, sound absorption is realized using porous characteristic
Noise reduction；(3) addition of diatom ooze greatly reduces composite sound-absorbing material surface toxic volatile organic matter simultaneously, enhances its ring
Guaranteed cost.
Specific embodiment
The effect of to make to structure feature of the invention and being reached, has a better understanding and awareness, to preferable
Embodiment cooperation detailed description, is described as follows:
Embodiment 1
A kind of composite sound-absorbing material is made of following parts by weight raw material: 40 parts of gypsum mortar, 20 parts of diatom ooze, wooden
16 parts of fiber, 3 parts of carboxymethyl cellulose, 1 part of stabilizer, 5 parts of foaming agent, 14 parts of water.
A method of above-mentioned composite sound-absorbing material is prepared, comprises the following production steps that parts by weight are 16 parts by (1)
Wood fibre pours into pulverizer, and grinding 35min obtains fineness≤0.5mm powdery wood fibre；(2) by gained powder in step (1)
Shape wood fibre adds above-mentioned in conjunction with the raw gypsum mortar of above-mentioned parts by weight, diatom ooze, carboxymethyl cellulose, water
The stabilizer and foaming agent of parts by weight, stirred in mixing and blending machine it is full and uniform after at half dry mixture；(3) gained is mixed
It closes object to pour into mold, is sent to pressurization in pressuring machine, then be dried up to the composite sound-absorbing material.In the step (3)
Drying temperature be 50 DEG C, the foaming agent be sodium bicarbonate, stabilizer is silicone oil；The gypsum mortar is cement and glass fibers
The mixture that dimension is 1:1 according to mass parts ratio.
Embodiment 2
A kind of composite sound-absorbing material is made of following parts by weight raw material: 50 parts of gypsum mortar, 30 parts of diatom ooze, wooden
20 parts of fiber, 5 parts of carboxymethyl cellulose, 3 parts of stabilizer, 9 parts of foaming agent, 18 parts of water.
A method of above-mentioned composite sound-absorbing material is prepared, comprises the following production steps that parts by weight are 20 parts by (1)
Wood fibre pours into pulverizer, and grinding 45min obtains fineness≤0.5mm powdery wood fibre；(2) by gained powder in step (1)
Shape wood fibre adds above-mentioned in conjunction with the raw gypsum mortar of above-mentioned parts by weight, diatom ooze, carboxymethyl cellulose, water
The stabilizer and foaming agent of parts by weight, stirred in mixing and blending machine it is full and uniform after at half dry mixture；(3) gained is mixed
It closes object to pour into mold, is sent to pressurization in pressuring machine, then be dried up to the composite sound-absorbing material.In the step (3)
Drying temperature be 60 DEG C.Wherein, the foaming agent is sodium bicarbonate, and stabilizer is silicone oil；The gypsum mortar be cement and
The mixture that glass fibre is 1:1 according to mass parts ratio.
Embodiment 3
A kind of composite sound-absorbing material is made of following parts by weight raw material: 45 parts of gypsum mortar, 25 parts of diatom ooze, wooden
18 parts of fiber, 4 parts of carboxymethyl cellulose, 2 parts of stabilizer, 7 parts of foaming agent, 16 parts of water.
A method of above-mentioned composite sound-absorbing material is prepared, comprises the following production steps that parts by weight are 18 parts by (1)
Wood fibre pours into pulverizer, and grinding 40min obtains fineness≤0.5mm powdery wood fibre；(2) by gained powder in step (1)
Shape wood fibre adds above-mentioned in conjunction with the raw gypsum mortar of above-mentioned parts by weight, diatom ooze, carboxymethyl cellulose, water
The stabilizer and foaming agent of parts by weight, stirred in mixing and blending machine it is full and uniform after at half dry mixture；(3) gained is mixed
It closes object to pour into mold, is sent to pressurization in pressuring machine, then the composite sound-absorbing material to obtain the final product is dried, in the step (3)
Drying temperature be 55 DEG C, wherein the foaming agent be sodium bicarbonate, stabilizer is silicone oil；The gypsum mortar be cement and
The mixture that glass fibre is 1:1 according to mass parts ratio.
In accordance with the above-mentioned embodiment 1~3 and the composite sound-absorbing material the performance test results such as table 1 that obtains of comparative example 1.
Comparative example 1 is to remove the glass fibre in Examples 1 to 3, and other embodiments are identical with Examples 1 to 3,
The average value of gained testing result.
Table 1
In table 1, in order to test the corrosion resistance of composite sound-absorbing material, it is (big that sound absorption product is made in composite sound-absorbing material
Small is 10cm × 10cm × 5cm) immersion test is carried out in salt water, and (concentration of salt water is 5wt%, and adjusts it using hydrochloric acid
PH value is that 2.0), the time of immersion is respectively 60d, 100d, 180d and 240d, then tests its compression strength, and then gained is flat
Mean value is then average pressure.As shown in Table 1, in the embodiment that joined glass fibre, the composite sound-absorbing material obtained is not only
Further raising has been obtained in sound absorption effect, while further improvement has also been obtained in corrosion resistance.
In accordance with the above-mentioned embodiment 1~3 and the composite sound-absorbing material surface toxic volatile content of organics that obtains of comparative example 2
Test, as a result such as table 2
Comparative example 2: the diatom ooze in Examples 1 to 3 is removed, other embodiments are identical with Examples 1 to 3, gained
The average value of testing result.
As shown in Table 2, the toxic volatile on composite sound-absorbing material surface detected by the embodiment containing diatom ooze has
Machine object content is lower, meets≤the national environmental standard of 200g/l, at the same the content of free formaldehyde also it is low compared with comparative example 2 very
It is more, so the addition of diatom ooze substantially increases the environmental-protecting performance of entire composite sound-absorbing material.
Due to introducing wood fibre in the present invention, due to the structural viscosity of wood fibre, make the prefabricated slurry processed
The uniformity of (dry and wet material) keeps homoeostasis and reduces the contraction and expansion of system, mentions the precision of construction or prefabricated component significantly
It is high.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its
Equivalent defines.
Claims (9)
1. a kind of composite sound-absorbing material, it is characterised in that: be made of following parts by weight raw material: 40~50 parts of gypsum mortar, silicon
20~30 parts of algal gel, 16~20 parts of wood fibre, 3~5 parts of carboxymethyl cellulose, 1~3 part of stabilizer, 5~9 parts of foaming agent, water
14~18 parts.
2. a kind of composite sound-absorbing material according to claim 1, it is characterised in that: be made of following parts by weight raw material:
40 parts of gypsum mortar, 20 parts of diatom ooze, 16 parts of wood fibre, 3 parts of carboxymethyl cellulose, 1 part of stabilizer, 5 parts of foaming agent, water 14
Part.
3. a kind of composite sound-absorbing material according to claim 1, it is characterised in that: be made of following parts by weight raw material:
50 parts of gypsum mortar, 30 parts of diatom ooze, 20 parts of wood fibre, 5 parts of carboxymethyl cellulose, 3 parts of stabilizer, 9 parts of foaming agent, water 18
Part.
4. a kind of composite sound-absorbing material according to claim 1, it is characterised in that: be made of following parts by weight raw material:
45 parts of gypsum mortar, 25 parts of diatom ooze, 18 parts of wood fibre, 4 parts of carboxymethyl cellulose, 2 parts of stabilizer, 7 parts of foaming agent, water 16
Part.
5. a kind of composite sound-absorbing material according to any one of claim 1 to 4, it is characterised in that: the gypsum mortar
The mixture for being 1:1 according to mass parts ratio for cement and glass fibre.
6. a kind of composite sound-absorbing material according to any one of claim 1 to 4, it is characterised in that: the foaming agent is
Sodium bicarbonate.
7. a kind of composite sound-absorbing material according to any one of claim 1 to 4, it is characterised in that: the stabilizer is
Silicone oil.
8. a kind of composite sound-absorbing material according to any one of claim 1 to 4, it is characterised in that: the composite sound absorbing
The method of the preparation of material comprises the following production steps that the wood fibre of above-mentioned parts by weight is poured into pulverizer, grinding by (1)
35~45min obtains fineness≤0.5mm powdery wood fibre；(2) by gained powdery wood fibre in step (1) with it is above-mentioned heavy
The raw material diatom ooze, carboxymethyl cellulose, water for measuring number combine, and add the stabilizer and foaming agent of above-mentioned parts by weight,
Stirred in mixing and blending machine it is full and uniform after at half dry mixture；(3) gained mixture is poured into mold, is sent in pressuring machine
Pressurization, then be dried up to the composite sound-absorbing material.
9. a kind of composite sound-absorbing material according to claim 8, it is characterised in that: the drying temperature in the step (3)
It is 50~60 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810982340.7A CN109081667A (en) | 2018-08-27 | 2018-08-27 | A kind of composite sound-absorbing material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108840713A (en) * | 2018-08-27 | 2018-11-20 | 安徽微威胶件集团有限公司 | A kind of composite sound-absorbing material |
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| CN108840713A (en) * | 2018-08-27 | 2018-11-20 | 安徽微威胶件集团有限公司 | A kind of composite sound-absorbing material |
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| US8057915B2 (en) * | 2007-05-31 | 2011-11-15 | United States Gypsum Company | Acoustical gypsum board panel and method of making it |
| CN101244920A (en) * | 2008-03-25 | 2008-08-20 | 东南大学 | Concrete base sound absorption material for road sound screen and method of manufacturing the same |
| CN101428999A (en) * | 2008-12-12 | 2009-05-13 | 北京大地远通(集团)有限公司 | Decoration acoustic absorption sheet material of tripolite and method for producing the same |
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