CN108099294A - A kind of technique for preparing environment-friendly type sound barrier sound absorber using plant fiber and cast waste sand - Google Patents
A kind of technique for preparing environment-friendly type sound barrier sound absorber using plant fiber and cast waste sand Download PDFInfo
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- CN108099294A CN108099294A CN201711310557.5A CN201711310557A CN108099294A CN 108099294 A CN108099294 A CN 108099294A CN 201711310557 A CN201711310557 A CN 201711310557A CN 108099294 A CN108099294 A CN 108099294A
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- waste sand
- cast waste
- plant fiber
- sound absorber
- friendly type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/048—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of particles
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/06—Vegetal fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/752—Corrosion inhibitor
Abstract
The invention belongs to sound barrier technical field, it particularly relates to a kind of technique for preparing environment-friendly type sound barrier sound absorber using plant fiber and cast waste sand.The sound barrier sound absorber includes plant fiber carpet veneer, cast waste sand particle two layers of sound absorber of flaggy.Compared with prior art, the present invention has the following advantages：The color of cast waste sand in itself can be effectively retained；Cast waste sand grain size is smaller, and too many technique and expense need not be increased by rolling crushing；Cast waste sand sand grains intensity is high, and formation particulate acoustic board mechanical property is preferable, and surface layer is enclosed with the adhesive such as epoxy resin, and corrosion resistance is preferable；In the manufacturing process of plant fiber felt, the titanium dioxide added with rutile-type, with most stable of crystal habit, compact structure, higher index of refraction can be effectively improved the UV resistant performance of epoxy resin.
Description
Technical field
The invention belongs to sound barrier technical field, it particularly relates to which a kind of prepared using plant fiber and cast waste sand
Environment-friendly type sound barrier sound absorber.
Technical background
For the foundry industry in China mainly based on sand casting, ratio is about 80-90%.1t casting meetings are often produced according to statistics
Generate 1.2t cast waste sands.Due to the difference of casting technique, the auxiliary agent added is also different so that cast waste sand remained on surface first
The substances such as aldehyde, sulfide, benzene, phenol.How its safe disposal and recycling are casting industries by so substantial amounts of cast waste sand
One problem, significant damage and test also for our living environments.Currently for the main regeneration method of cast waste sand
For concrete brick, pavior brick, refractory material casting material, antiquated sand regeneration, casting water glass, building light-weight aggregate etc..Profit of the invention
With cast waste sand after drying, rolling crushing, particle dihedral coefficient is suitable, and cast waste sand intensity it is high the features such as, pass through
The adhesive such as epoxy resin are consolidated, and waste sand particles acoustic board is made, and are a kind of works of simple and practicable disposal cast waste sand
Skill, and by the package of the adhesive such as epoxy resin, can effective poisonous and harmful substances such as closed methanal, sulfide, benzene, phenol leaching
Go out and discharge.
The granule sound absorption board prepared using cast waste sand, with excellent sound absorbing performance, but mainly in medium-high frequency
The noise of section, for middle low-frequency range (＜ 500Hz), especially less than 250Hz frequency ranges, sound absorbing performance is poor, current main skill
Art means have the effect that has some improvement to increase the thickness of granule sound absorption board and certain thickness air layer being added after its structure
Fruit, but due to the thickness for adding product, increase product dead weight, certain difficulty is added to structure design.Currently for middle low frequency
The major product of sound absorption is metal fiber acoustic board, and external (Japan) product acoustic absorptivity is 0.5-0.6, better performances, but valency
Lattice are higher, 1000 yuan/m2Left and right.Home products, acoustic absorptivity 0.1-0.3, price 220-500 members/m2, there are many cost reduction,
But low frequency absorption poor-performing.The present invention pre-processes plant fiber on the basis of the studies above, prepares plant fiber
Felt can be effectively improved the low frequency absorption performance of sound absorber.
The content of the invention
In order to solve the above technical problem, the present invention provides a kind of environment-friendly types prepared using plant fiber and cast waste sand
Sound barrier sound absorber can largely consume trade waste cast waste sand and agricultural wastes plant fiber, and preparation process is simple
It is easy.
A kind of environment-friendly type sound barrier sound absorber prepared using plant fiber and cast waste sand of the present invention, the sound
Barrier sound absorber includes plant fiber carpet veneer, cast waste sand particle two layers of sound absorber of flaggy；The making step of the plant fiber felt
It is rapid as follows：
1) after plant fiber is collected, crush, be chopped, form chopped strand, length 6-12mm；
2) the plant fiber aqueous slkali digestion 2h after being chopped removes drying；
3) the dried plant fibre surface sprinkling coupling agent solution of digestion, it is dry；
4) aqueous epoxy resins of certain mass ratio with curing agent and rutile type titanium white are mixed, sprayed
It is hot-forming in surface treated plant fiber；
A kind of environment-friendly type sound barrier sound absorber prepared using plant fiber and cast waste sand of the present invention, the alkali
Solution be NaOH, KOH or N1, N10- dimethylated indolyl ethylamine solutions, mass concentration 5%.
A kind of environment-friendly type sound barrier sound absorber prepared using plant fiber and cast waste sand of the present invention, the idol
Connection agent is silane series coupling agent, and solution is 1-2% methanol or ethanol solution.
A kind of environment-friendly type sound barrier sound absorber prepared using plant fiber and cast waste sand of the present invention, the water
Property epoxy resin:Curing agent:Water:Rutile type titanium white=1:3:4:0.2；Temperature：40-50 DEG C, pressure：0.2-0.6MPa.
A kind of environment-friendly type sound barrier sound absorber prepared using plant fiber and cast waste sand of the present invention, the casting
The making step for making waste sand particles plate is as follows：
1) cast waste sand collected sieves, sieve pore grain size is 0.6mm or 0.3mm by dry with rolling comminution pretreatment；
2) epoxy resin of certain mass ratio, curing agent are mixed with pretreated cast waste sand, stirring is equal
After even, pressing formation.
A kind of environment-friendly type sound barrier sound absorber prepared by plant fiber and cast waste sand of the present invention, the epoxy
Resin:Curing agent=3-4:1, cast waste sand:(epoxy resin+curing agent)=5-6:1.
After the plant fiber felt is hot-forming, thickness 10-15mm.
The cast waste sand particle board molding thickness is 15-25mm.
Compared with prior art, the environment-friendly type sound barrier of the present invention prepared using plant fiber and cast waste sand is absorbed sound
Body has the following advantages：
1) cast waste sand caused by foundary industry has different colors, present invention experiment is used due to the difference of technique
Cast waste sand is mainly light red and light green color, the adhesive used in invention cure after for transparence, casting can be effectively retained
The color (light red or light green color) of antiquated sand in itself is made, changes the single color such as silver color or the grey of traditional sound barrier, it can
Improve or alleviate the visual fatigue in driving；
2) cast waste sand grain size is smaller, and too many technique and expense need not be increased by rolling crushing；Cast waste sand sand grains intensity is high,
Formation particulate acoustic board mechanical property is preferable, and surface layer is enclosed with the adhesive such as epoxy resin, and corrosion resistance is preferable；
3) in the manufacturing process of plant fiber felt, the titanium dioxide added with rutile-type, with most stable of crystallization
Form, compact structure, higher index of refraction can be effectively improved the UV resistant performance of epoxy resin；If in extraction, use
Be N1, N10- dimethylated indolyls ethamine then utilizes N1, N10- dimethylated indolyls ethamine and hydroxyl in fiber as aqueous slkali
Base Hydrogen Binding Adsorption, i.e. profit are improved recovery rate, can also increase the compactness of fibre structure.
Description of the drawings：
Fig. 1 is environment-friendly type sound barrier sound absorber testing sound absorption performance result figure prepared by embodiment 1-2；The song that square is linked to be
Line is drawn by 1 data of embodiment；The curve that dot is linked to be is drawn by 2 data of embodiment.
Specific embodiment
With reference to specific embodiment to the environment-friendly type of the present invention prepared using plant fiber and cast waste sand
Sound barrier sound absorber is described further, but protection scope of the present invention is not limited to this.
Embodiment 1
Specific embodiment is mainly two parts：(1) making of plant fiber felt.For plant fiber pretreatment with
It makes：After plant fiber is collected, by crushing, the chopped strand of 6~12mm is chopped into；With aqueous slkali digestion 2h；It removes simultaneously
It is dried；Surface layer sprays coupling agent solution.By a certain proportion of aqueous epoxy resins and curing agent and rutile titanium dioxide
Powder is mixed, and is sprayed on surface treated plant fiber, hot-forming.(2) making of cast waste sand particle board.Pin
Pretreatment and making for cast waste sand：The cast waste sand of collection is sieved, sieve pore grain size is 0.3 or 0.6mm.To centainly it compare
The epoxy resin of example is mixed with pretreated cast waste sand, after stirring evenly, pressing formation.
1) flaxen fiber will be collected by broken, chopped, formation length is the chopped strand of 6~8mm or so, by its digestion
2h is impregnated in 5% NaOH solution, digestion temperature is 60 DEG C；
2) after the chopped plant fiber drying after digestion, one layer of coupling agent solution is sprayed on its surface layer；
3) aqueous epoxy resin emulsion, wherein aqueous epoxy resins are configured:Curing agent:Water:Rutile type titanium white (quality
Than)=1:3:4:0.2, it is sprayed in above-mentioned fiber surface, carries out hot pressing after spraying, heat pressing process is：Temperature control is 40
DEG C, apply the pressure of 0.3MPa.
The mass ratio of flaxen fiber and aqueous epoxy resin emulsion using visually observe lotion be uniformly distributed in flaxen fiber surface as
Preferably.
4) by the cast waste sand of collection after drying process, 0.6mm sieve pores is crossed, weigh 200g cast waste sands.
5) epoxy resin and curing agent are pressed 4:1 mass ratio is mixed, and is amounted to 40g, is uniformly dispersed in advance；
6) cast waste sand is uniformly mixed with epoxy resin solidifying system, sample preparation, room temperature maintenance 7d.
Embodiment 2
Specific embodiment is mainly two parts：(1) making of plant fiber felt.For plant fiber pretreatment with
It makes：After plant fiber is collected, by crushing, the chopped strand of 6~12mm is chopped into；With aqueous slkali digestion 2h；It removes simultaneously
It is dried；Surface layer sprays coupling agent solution.By a certain proportion of aqueous epoxy resins and curing agent and rutile titanium dioxide
Powder is mixed, and is sprayed on surface treated plant fiber, hot-forming.(2) making of cast waste sand particle board.Pin
Pretreatment and making for cast waste sand：The cast waste sand of collection is sieved, sieve pore grain size is 0.3 or 0.6mm.To centainly it compare
The epoxy resin of example is mixed with pretreated cast waste sand, after stirring evenly, pressing formation.
1) flaxen fiber will be collected by broken, chopped, formation length is the chopped strand of 6~8mm or so, by its digestion
2h is impregnated in 5% N1, N10- dimethylated indolyl ethylamine solutions, digestion temperature is 60 DEG C；
2) after the chopped plant fiber drying after digestion, one layer of coupling agent solution is sprayed on its surface layer；
3) aqueous epoxy resin emulsion, wherein aqueous epoxy resins are configured:Curing agent:Water:Rutile type titanium white (quality
Than)=1:3:4:0.2, it is sprayed in above-mentioned fiber surface, carries out hot pressing after spraying, heat pressing process is：Temperature control is 40
DEG C, apply the pressure of 0.3MPa.
The mass ratio of flaxen fiber and aqueous epoxy resin emulsion using visually observe lotion be uniformly distributed in flaxen fiber surface as
Preferably.
4) by the cast waste sand of collection after drying process, 0.6mm sieve pores is crossed, weigh 200g cast waste sands.
5) epoxy resin and curing agent are pressed 4:1 mass ratio is mixed, and is amounted to 40g, is uniformly dispersed in advance；
6) cast waste sand is uniformly mixed with epoxy resin solidifying system, sample preparation, room temperature maintenance 7d.
Claims (8)
- A kind of 1. environment-friendly type sound barrier sound absorber prepared using plant fiber and cast waste sand, which is characterized in that the sound-screen Hinder sound absorber and include plant fiber carpet veneer, cast waste sand particle two layers of sound absorber of flaggy；The making step of the plant fiber felt It is as follows：1) after plant fiber is collected, crush, be chopped, form chopped strand, length 6-12mm；2) the plant fiber aqueous slkali digestion 2h after being chopped removes drying；3) the dried plant fibre surface sprinkling coupling agent solution of digestion, it is dry；4) aqueous epoxy resins with curing agent and rutile type titanium white are mixed, is sprayed on surface treated plant Fibres, it is hot-forming.
- 2. the environment-friendly type sound barrier sound absorber according to claim 1 prepared using plant fiber and cast waste sand, special Sign is, the aqueous slkali is NaOH, KOH solution or N1, N10- dimethylated indolyl ethylamine solution, mass concentration 5%.
- 3. the environment-friendly type sound barrier sound absorber according to claim 1 prepared using plant fiber and cast waste sand, special Sign is that the coupling agent is silane series coupling agent；Solution is 1-2wt% methanol or ethanol solution.
- 4. the environment-friendly type sound barrier sound absorber according to claim 1 prepared using plant fiber and cast waste sand, special Sign is, the aqueous epoxy resins:Curing agent:Water:The mass ratio of rutile type titanium white is 1:3:4:0.2；Temperature：40- 50 DEG C, pressure：0.2-0.6MPa.
- 5. the environment-friendly type sound barrier sound absorber according to claim 1 prepared using plant fiber and cast waste sand, special Sign is that the making step of the cast waste sand particle board is as follows：1) cast waste sand collected sieves, sieve pore grain size is 0.6mm or 0.3mm by dry with rolling comminution pretreatment；2) epoxy resin, curing agent are mixed with pretreated cast waste sand, after stirring evenly, pressing formation.
- 6. the environment-friendly type sound barrier sound absorber according to claim 5 prepared using plant fiber and cast waste sand, special Sign is, the epoxy resin:Curing agent mass ratio is 3-4:1, cast waste sand:The mass ratio of (epoxy resin+curing agent) is 5-6:1。
- 7. the environment-friendly type sound barrier sound absorber according to claim 1 prepared using plant fiber and cast waste sand, special Sign is, after the plant fiber felt is hot-forming, thickness 10-15mm.
- 8. the environment-friendly type sound barrier sound absorber according to claim 1 prepared using plant fiber and cast waste sand, special Sign is that the cast waste sand particle board molding thickness is 15-25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711310557.5A CN108099294B (en) | 2017-12-11 | 2017-12-11 | Process for preparing environment-friendly sound barrier sound absorber by using plant fibers and waste foundry sand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711310557.5A CN108099294B (en) | 2017-12-11 | 2017-12-11 | Process for preparing environment-friendly sound barrier sound absorber by using plant fibers and waste foundry sand |
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| Publication Number | Publication Date |
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| CN108099294A true CN108099294A (en) | 2018-06-01 |
| CN108099294B CN108099294B (en) | 2020-05-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113087542A (en) * | 2021-04-12 | 2021-07-09 | 马鞍山市绿科环保科技有限公司 | High-hardness sound-insulation brick produced by using casting waste sand and preparation method thereof |
| CN113735496A (en) * | 2021-08-31 | 2021-12-03 | 山西省交通科技研发有限公司 | Solid waste base composite mortar impregnated plate and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102704590A (en) * | 2012-06-01 | 2012-10-03 | 秦皇岛裕源木业有限公司 | Wall board and processing technology thereof |
| CN203782911U (en) * | 2014-04-25 | 2014-08-20 | 黑龙江省龙建路桥第一工程有限公司 | Light noise-control insulation board for construction passage |
| CN105992680A (en) * | 2013-08-09 | 2016-10-05 | 密歇根大学董事会 | Natural fiber reinforced composite panel and method |
| CN206157599U (en) * | 2016-10-20 | 2017-05-10 | 四川正升声学科技有限公司 | Detachable polymerized particle sound shield plates |
-
2017
- 2017-12-11 CN CN201711310557.5A patent/CN108099294B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704590A (en) * | 2012-06-01 | 2012-10-03 | 秦皇岛裕源木业有限公司 | Wall board and processing technology thereof |
| CN105992680A (en) * | 2013-08-09 | 2016-10-05 | 密歇根大学董事会 | Natural fiber reinforced composite panel and method |
| CN203782911U (en) * | 2014-04-25 | 2014-08-20 | 黑龙江省龙建路桥第一工程有限公司 | Light noise-control insulation board for construction passage |
| CN206157599U (en) * | 2016-10-20 | 2017-05-10 | 四川正升声学科技有限公司 | Detachable polymerized particle sound shield plates |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113087542A (en) * | 2021-04-12 | 2021-07-09 | 马鞍山市绿科环保科技有限公司 | High-hardness sound-insulation brick produced by using casting waste sand and preparation method thereof |
| CN113087542B (en) * | 2021-04-12 | 2023-04-07 | 马鞍山市绿科环保科技有限公司 | High-hardness sound-insulation brick produced by using casting waste sand and preparation method thereof |
| CN113735496A (en) * | 2021-08-31 | 2021-12-03 | 山西省交通科技研发有限公司 | Solid waste base composite mortar impregnated plate and manufacturing method thereof |
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| CN108099294B (en) | 2020-05-08 |
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