CN103524082A - Manufacturing method of metal plugboard type sound barrier supporting plate - Google Patents
Manufacturing method of metal plugboard type sound barrier supporting plate Download PDFInfo
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- CN103524082A CN103524082A CN201310422157.9A CN201310422157A CN103524082A CN 103524082 A CN103524082 A CN 103524082A CN 201310422157 A CN201310422157 A CN 201310422157A CN 103524082 A CN103524082 A CN 103524082A
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Abstract
The invention discloses a manufacturing method of a metal plugboard type sound barrier supporting plate. The manufacturing method comprises the following steps: pulping by using raw wood paddle boards, cement, vinylon, sepiolite, pulverized fuel ash, silica powder with the particle size of 170-190 meshes, coarse whiting powder and mica powder as raw materials, carrying out beater-addition process, molding, curing and the like, thus obtaining the sound barrier supporting plate. The metal plugboard type sound barrier supporting plate has the characteristics of low density, high specific strength, small bulking factor, fire resistance, thermal insulation, sound absorption, noise elimination, strong sound insulation capacity and the like and relatively good market application prospect; in addition, the pulverized fuel ash is used as the raw material of the supporting plate, so that changing waste into valuable is realized, the cost is reduced, and good economic benefits and social benefits are also brought.
Description
Technical field
The present invention relates to a kind of preparation method of metal backing formula sound barrier back up pad.
Background technology
Along with China Express Railway enters the high speed development epoch, high-speed train run on center intercity between, have that freight volume is large, speed is high, take the features such as convenient.But, because high-speed train speed is up to 350 kilometers/hour, when train moves on high-speed track, high-strength metal frictional noise, train and track low-frequency vibration noise and strong Action of Wind pressure can not get emission and absorption in sound barrier, the refraction repeatedly between train and sound barrier along with noise and blast, these noises, blast are gathered into new energy, and formation has destructive
" sonic boom ", train is overturned, and buildings is destroyed; " sonic boom " and the noise of high-speed railway produce serious restrictive function to high-speed railway, and therefore, " blast " and " sonic boom " of control high-speed railway is the important external key elements of Development of High Speed Railway, can not be ignored.
High speed railway sound barrier is not to erect simply at railway other " gear sound " or " shelves wind " wall, it is a kind of by multiple different densities, intensity and the combination that possesses the material of sound absorption, noise elimination and sound insulation function, possesses the sudden and violent ability of good wind resistance, it can absorb various energy and the blast that High Speed Railway Trains is in operation and outwards discharges in a large number, and they are converted to mechanical energy and heat energy, finally the airborne moisture absorption by sound barrier is discharged into space.
Traditional railway, road sound barrier are to take plastic acoustic barrier as main, plastic acoustic barrier material density is low, intensity is low, a little less than crushing resistance, fold resistance, shock resistance and anti-wind pressure, not noise elimination, sound insulation effect, the high frequency noise producing during to high speed rail train operation does not have the effect of eliminating the noise and insulating against sound, therefore, can not be effectively applied in high-speed railway.
Summary of the invention
The object of the invention is to be directed to the problem that sound barrier intensity is low, heat insulation and acoustical absorptivity is weak in high-speed railway of the prior art, the preparation method of metal backing formula sound barrier back up pad is provided, sound barrier back up pad intensity that the method prepares is high, fire-resistant, heat insulation, thermal insulation and acoustical absorptivity strong, shock-resistant, resistance to compression, anti-ly tear ability open higher than normal concrete, there is very strong noise elimination, the characteristic of sound insulation simultaneously.
In order to reach foregoing invention object, the technical solution used in the present invention is as follows:
The preparation method that a kind of metal backing formula sound barrier back up pad is provided, comprises the following steps:
A, metering: each raw material by weight proportioning is: 18 ~ 20 parts of log paddle boards, 62 ~ 68 parts of cement, 3.5 ~ 4.5 parts, vinylon, 4.5 ~ 5.5 parts of sepiolites, 3.5 ~ 4.5 parts, flyash, particle diameter is 6.5 ~ 8 parts of 170 ~ 190 object silica flours, 11 ~ 13 parts of dicalcium powders, with 1 ~ 2 part of mica powder, above-mentioned raw materials is measured respectively stand-by;
B, pulp processing: former wood-pulp board is added and in shredder, carries out fragmentation, then pour in loosening apparatus and loosen 20 ~ 45 minutes, make slurry concentration be controlled at 4 ~ 6wt%; Send into again in double plate mill discongest, defibrination to beating degree is 50 degree, makes former wood pulp;
C, slurrying: the former wood pulp that step b is made joins in hollander, then order to add vinylon, sepiolite, flyash, particle diameter be 170 ~ 190 object silica flours, dicalcium powder, mica powder, cement and water, stir 5 minutes, make slip;
D, copy and get moulding and stacking: the slip that step c is made adds to copy to get copies extract operation in net cage, the material base that formation water ratio is 25 ~ 27%, this material base is attached on aggregate tube, aggregate tube turns 15 circles, the slab that formation is comprised of 15 layered material bases, then it is smooth to guarantee slab by stacker, slab to be carried out to stacking; Then slab is sent in press and under 50000 ~ 70000Mpa pressure, suppressed and within 15 ~ 20 minutes, be shaped to sheet material;
E, precuring and the demoulding: the sheet material that steps d is made 4 ~ 5 hours intensity to sheet material of precuring at 40 ~ 55 ℃ reaches 0.5MPa, then carries out the demoulding;
F, steam press maintenance: the sheet material after the demoulding is delivered to autoclave, and to carry out steam press maintenance to the water ratio of sheet material be 20%; Steam press maintenance be divided into boost, constant voltage and decompression three phases, first boost 3 hours, then constant voltage 10 ~ 15 hours, then reduce pressure 3 hours; Wherein, pressure during constant voltage is 0.8 ~ 1.0MPa, and temperature is 200 ~ 220 ℃;
G, oven dry: by the sheet material after steam press maintenance deliver to comb formula dryer at 40 ~ 80 ℃, dry to water ratio be 10%, make metal backing formula sound barrier back up pad.
Described cement is 525# cement.
In steps d, copy and get net cage and adopt 5 web frames, the concentration of 1 ~ No. 5 net cage is respectively 8 ~ 9%, 8 ~ 9%,
7 ~ 8%, 7 ~ 8% and 6 ~ 7%; The net order number of 1 ~ No. 5 net cage outer net is 70 ~ 80 orders, and the net order number of 1 ~ No. 5 net cage Intranet is 12 ~ 14 orders.
In step a, each raw material by weight proportioning is: 18 parts of log paddle boards, and 62 parts of cement, 3.5 parts, vinylon, 4.5 parts of sepiolites, 3.5 parts, flyash, particle diameter is 6.5 parts of 180 object silica flours, 11 parts of dicalcium powders, and 1 part of mica powder.
In sum, it is filamentary material that the present invention adopts vinylon, and take calcareous-siliceous material as main body consolidating material, through slurrying, copy get, the operation such as moulding and maintenance and make light weight board, the feature such as adopt that sheet material prepared by the method has that density is low, specific tenacity is high, bulking factor is little, fire-resistant, heat insulation, sound absorption, noise elimination, sound-insulation capability are strong, has good market application foreground; In addition, this back up pad is also usingd flyash as raw material, turns waste into wealth, and not only reduces costs, and can bring good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the present invention-embodiment.
Embodiment
Below in conjunction with specific embodiment, the specific embodiment of the present invention is described in detail:
embodiment 1
Take 18 parts of log paddle boards, 62 parts of 525# cement, 3.5 parts, vinylon, 4.5 parts of sepiolites, 3.5 parts, flyash, particle diameter is 6.5 parts of 180 object silica flours, 11 parts of dicalcium powders, and 1 part of mica powder, measure respectively stand-by by above-mentioned raw materials;
As shown in Figure 1, former wood-pulp board is added and in shredder, carries out fragmentation, then pour in loosening apparatus and loosen 20 minutes, make slurry concentration be controlled at 4wt%; Send into again in double plate mill discongest, defibrination to beating degree is 50 degree, makes former wood pulp;
The former wood pulp making is joined in hollander, then order to add vinylon, sepiolite, flyash, particle diameter be 180 object silica flours, dicalcium powder, mica powder, 525# cement and water, stir 5 minutes, make slip;
The slip making is added to copy to get and in net cage, copy extract operation, copy and get net cage and adopt 5 web frames to copy to get, 1-5 net cage concentration is controlled at respectively following scope: 8 ~ 9%, 8 ~ 9%, 7 ~ 8%, 7 ~ 8%, 6 ~ 7%, outer net net order number is 70 ~ 80 orders, Intranet net number is 12 ~ 14 orders, aggregate tube dehydration is more than 12%, finally forming water ratio and be 25% material base echos at aggregate tube, every bed thickness 0.8mm, aggregate tube turns 15 circles, be that every plate is comprised of 15 layered material layers, by going out knife system, material base is shut down and formed slab again, by stacker, be fitly placed into and produce on waggon again, general production all selects base one mould to replace the mode of stacking, fully guarantee that slab is smooth, whole working cycle was controlled between 50 seconds, and moulding, ejection, conveying, cutting, stacking whole process adopt programmable logic controller automatically to control, and slab is sent in press and under 50000Mpa pressure, suppressed and within 15 minutes, be shaped to sheet material.
The sheet material making 4 hours intensity to sheet material of precuring at 40 ℃ is reached to 0.5MPa, then carry out the demoulding;
Sheet material after the demoulding is delivered to autoclave, and to carry out steam press maintenance to the water ratio of sheet material be 20%; Steam press maintenance be divided into boost, constant voltage and decompression three phases, first boost 3 hours, then constant voltage 10 ~ 15 hours, then reduce pressure 3 hours; Wherein, pressure during constant voltage is 0.8 ~ 1.0MPa, and temperature is 200 ~ 220 ℃;
By the sheet material after steam press maintenance deliver to comb formula dryer at 40 ℃, dry to water ratio be 10%, make metal backing formula sound barrier back up pad.
According to JC/T412.1-2006 " fiber cement board first part: without fibrous magnesium silicate cement board ", the prepared metal backing formula of the present invention sound barrier back up pad is detected, detected result is referring to table 1.
The physical and mechanical property of the sound barrier back up pad that described in table 1 employing embodiment 1, method makes
| test item | standard value | measured performance index |
| density, g/cm 3 | 1.2 ~ 1.6 | 1.3 |
| folding strength, MPa | > 10 | 13 |
| thermal conductivity, W/(mK) | < 0.3 | 0.05 |
| water ratio, % | ≤ 10 | 8 |
| the wet rate that rises, % | ≤ 0.25 | 0.08 |
| percent thermal shrinkage, % | ≤ 0.50 | 0.2 |
| uninflammability, % | meet GB8624 A level non-combustible material | meet |
| shock resistance, KJ/m 2 | >=2.0 | 4 |
| watertightness | through 24H check reverse side, there is not wet trace or water droplet phenomenon | meet |
| radioactivity | category-A material, production and marketing and use range are unrestricted.Meet GB6566-2001 " material of construction reflectivity nucleic is limited the quantity of " | "dead" |
Detected result shows, the sound barrier back up pad that the present embodiment prepares all meets the requirements, and folding strength, wetly rises by rate, percent thermal shrinkage, shock resistance all far above standard value.
embodiment 2
Take 20 parts of log paddle boards, 68 parts of 525# cement, 4.5 parts, vinylon, 5.5 parts of sepiolites, 4.5 parts, flyash, particle diameter is 8 parts of 190 object silica flours, 13 parts of dicalcium powders, and 2 parts of mica powders, measure respectively stand-by by above-mentioned raw materials;
Former wood-pulp board is added and in shredder, carries out fragmentation, then pour in loosening apparatus and loosen 45 minutes, make slurry concentration be controlled at 6wt%; Send into again in double plate mill discongest, defibrination to beating degree is 50 degree, makes former wood pulp;
The former wood pulp making is joined in hollander, then order to add vinylon, sepiolite, flyash, particle diameter be 190 object silica flours, dicalcium powder, mica powder, 525# cement and water, stir 5 minutes, make slip;
The slip making is added to copy to get and in net cage, copy extract operation, copy and get net cage and adopt 5 web frames to copy to get, 1-5 net cage concentration is controlled at respectively following scope: 8 ~ 9%, 8 ~ 9%, 7 ~ 8%, 7 ~ 8%, 6 ~ 7%, outer net net order number is 70 ~ 80 orders, Intranet net number is 12 ~ 14 orders, aggregate tube dehydration is more than 12%, finally forming water ratio and be 25% material base echos at aggregate tube, every bed thickness 0.8mm, aggregate tube turns 15 circles, be that every plate is comprised of 10 layered material layers, by going out knife system, material base is shut down and formed slab again, by stacker, be fitly placed into and produce on waggon again, general production all selects base one mould to replace the mode of stacking, fully guarantee that slab is smooth, whole working cycle was controlled between 50 seconds, and moulding, ejection, conveying, cutting, stacking whole process adopt programmable logic controller automatically to control, and slab is sent in press and under 70000Mpa pressure, suppressed and within 15 minutes, be shaped to sheet material.
The sheet material making 5 hours intensity to sheet material of precuring at 55 ℃ is reached to 0.5MPa, then carry out the demoulding;
Sheet material after the demoulding is delivered to autoclave, and to carry out steam press maintenance to the water ratio of sheet material be 20%; Steam press maintenance be divided into boost, constant voltage and decompression three phases, first boost 3 hours, then constant voltage 10 ~ 15 hours, then reduce pressure 3 hours; Wherein, pressure during constant voltage is 0.8 ~ 1.0MPa, and temperature is 200 ~ 220 ℃;
By the sheet material after steam press maintenance deliver to comb formula dryer at 80 ℃, dry to water ratio be 10%, make metal backing formula sound barrier back up pad.
According to JC/T412.1-2006 " fiber cement board first part: without fibrous magnesium silicate cement board ", the prepared metal backing formula of the present invention sound barrier back up pad is detected, detected result is referring to table 2.
The physical and mechanical property of the sound barrier back up pad that described in table 2 employing embodiment 2, method makes
| test item | standard value | measured performance index |
| density, g/cm 3 | 1.2 ~ 1.6 | 1.45 |
| folding strength, MPa | > 10 | 15 |
| thermal conductivity, W/(mK) | < 0.3 | 0.04 |
| water ratio, % | ≤ 10 | 8.5 |
| the wet rate that rises, % | ≤ 0.25 | 0.09 |
| percent thermal shrinkage, % | ≤ 0.50 | 0.15 |
| uninflammability, % | meet GB8624 A level non-combustible material | meet |
| shock resistance, KJ/m 2 | >=2.0 | 5 |
| watertightness | through 24H check reverse side, there is not wet trace or water droplet phenomenon | meet |
| radioactivity | category-A material, production and marketing and use range are unrestricted.Meet GB6566-2001 " material of construction reflectivity nucleic is limited the quantity of " | "dead" |
Detected result shows, the sound barrier back up pad that the present embodiment prepares all meets the requirements, and folding strength, wetly rises by rate, percent thermal shrinkage, shock resistance all far above standard value.
embodiment 3
Take 19 parts of log paddle boards, 65 parts of 525# cement, 4 parts, vinylon, 5 parts of sepiolites, 4 parts, flyash, particle diameter is 7.2 parts of 170 object silica flours, 12 parts of dicalcium powders, and 1.5 parts of mica powders, measure respectively stand-by by above-mentioned raw materials;
Former wood-pulp board is added and in shredder, carries out fragmentation, then pour in loosening apparatus and loosen 30 minutes, make slurry concentration be controlled at 5wt%; Send into again in double plate mill discongest, defibrination to beating degree is 50 degree, makes former wood pulp;
The former wood pulp making is joined in hollander, then order to add vinylon, sepiolite, flyash, particle diameter be 170 object silica flours, dicalcium powder, mica powder, 525# cement and water, stir 5 minutes, make slip;
The slip making is added to copy to get and in net cage, copy extract operation, copy and get net cage and adopt 5 web frames to copy to get, 1-5 net cage concentration is controlled at respectively following scope: 8 ~ 9%, 8 ~ 9%, 7 ~ 8%, 7 ~ 8%, 6 ~ 7%, outer net net order number is 70 ~ 80 orders, Intranet net number is 12 ~ 14 orders, aggregate tube dehydration is more than 12%, finally forming water ratio and be 25% material base echos at aggregate tube, every bed thickness 0.8mm, aggregate tube turns 15 circles, be that every plate is comprised of 10 layered material layers, by going out knife system, material base is shut down and formed slab again, by stacker, be fitly placed into and produce on waggon again, general production all selects base one mould to replace the mode of stacking, fully guarantee that slab is smooth, whole working cycle was controlled between 50 seconds, and moulding, ejection, conveying, cutting, stacking whole process adopt programmable logic controller automatically to control, and slab is sent in press and under 60000Mpa pressure, suppressed and within 15 minutes, be shaped to sheet material.
The sheet material making 4.5 hours intensity to sheet material of precuring at 50 ℃ is reached to 0.5MPa, then carry out the demoulding;
Sheet material after the demoulding is delivered to autoclave, and to carry out steam press maintenance to the water ratio of sheet material be 20%; Steam press maintenance be divided into boost, constant voltage and decompression three phases, first boost 3 hours, then constant voltage 10 ~ 15 hours, then reduce pressure 3 hours; Wherein, pressure during constant voltage is 0.8 ~ 1.0MPa, and temperature is 200 ~ 220 ℃;
By the sheet material after steam press maintenance deliver to comb formula dryer at 60 ℃, dry to water ratio be 10%, make metal backing formula sound barrier back up pad.
According to JC/T412.1-2006 " fiber cement board first part: without fibrous magnesium silicate cement board ", the prepared metal backing formula of the present invention sound barrier back up pad is detected, detected result is referring to table 3.
The physical and mechanical property of the sound barrier back up pad that described in table 3 employing embodiment 3, method makes
| test item | standard value | measured performance index |
| density, g/cm 3 | 1.2 ~ 1.6 | 1.5 |
| folding strength, MPa | > 10 | 15.3 |
| thermal conductivity, W/(mK) | < 0.3 | 0.05 |
| water ratio, % | ≤ 10 | 8.4 |
| the wet rate that rises, % | ≤ 0.25 | 0.1 |
| percent thermal shrinkage, % | ≤ 0.50 | 0.12 |
| uninflammability, % | meet GB8624 A level non-combustible material | meet |
| shock resistance, KJ/m 2 | >=2.0 | 5.5 |
| watertightness | through 24H check reverse side, there is not wet trace or water droplet phenomenon | meet |
| radioactivity | category-A material, production and marketing and use range are unrestricted.Meet GB6566-2001 " material of construction reflectivity nucleic is limited the quantity of " | "dead" |
Detected result shows, the sound barrier back up pad that the present embodiment prepares all meets the requirements, and folding strength, wetly rises by rate, percent thermal shrinkage, shock resistance all far above standard value.
Although in conjunction with specific embodiments the specific embodiment of the present invention is described in detail, it is not the restriction to this patent protection domain.In claims limited range, the various modifications that those skilled in the art can make without creative work or adjustment are still subject to the protection of this patent.
Claims (4)
1. a preparation method for metal backing formula sound barrier back up pad, is characterized in that, comprises the following steps:
A, metering: each raw material by weight proportioning is: 18 ~ 20 parts of log paddle boards, 62 ~ 68 parts of cement, 3.5 ~ 4.5 parts, vinylon, 4.5 ~ 5.5 parts of sepiolites, 3.5 ~ 4.5 parts, flyash, particle diameter is 6.5 ~ 8 parts of 170 ~ 190 object silica flours, 11 ~ 13 parts of dicalcium powders, with 1 ~ 2 part of mica powder, above-mentioned raw materials is measured respectively stand-by;
B, pulp processing: former wood-pulp board is added and in shredder, carries out fragmentation, then pour in loosening apparatus and loosen 20 ~ 45 minutes, make slurry concentration be controlled at 4 ~ 6wt%; Send into again in double plate mill discongest, defibrination to beating degree is 50 degree, makes former wood pulp;
C, slurrying: the former wood pulp that step b is made joins in hollander, then order to add vinylon, sepiolite, flyash, particle diameter be 170 ~ 190 object silica flours, dicalcium powder, mica powder, cement and water, stir 5 minutes, make slip;
D, copy and get moulding and stacking: the slip that step c is made adds to copy to get copies extract operation in net cage, the material base that formation water ratio is 25 ~ 27%, this material base is attached on aggregate tube, aggregate tube turns 15 circles, the slab that formation is comprised of 15 layered material bases, then it is smooth to guarantee slab by stacker, slab to be carried out to stacking; Then slab is sent in press and under 50000 ~ 70000Mpa pressure, suppressed and within 15 ~ 20 minutes, be shaped to sheet material;
E, precuring and the demoulding: the sheet material that steps d is made 4 ~ 5 hours intensity to sheet material of precuring at 40 ~ 55 ℃ reaches 0.5MPa, then carries out the demoulding;
F, steam press maintenance: the sheet material after the demoulding is delivered to autoclave, and to carry out steam press maintenance to the water ratio of sheet material be 20%; Steam press maintenance be divided into boost, constant voltage and decompression three phases, first boost 3 hours, then constant voltage 10 ~ 15 hours, then reduce pressure 3 hours; Wherein, pressure during constant voltage is 0.8 ~ 1.0MPa, and temperature is 200 ~ 220 ℃;
G, oven dry: by the sheet material after steam press maintenance deliver to comb formula dryer at 40 ~ 80 ℃, dry to water ratio be 10%, make metal backing formula sound barrier back up pad.
2. the preparation method of metal backing formula sound barrier back up pad according to claim 1, is characterized in that: described cement is 525# cement.
3. the preparation method of metal backing formula sound barrier back up pad according to claim 1, is characterized in that: in steps d, copies and gets net cage and adopt 5 web frames, the concentration of 1 ~ No. 5 net cage is respectively 8 ~ 9%, 8 ~ 9%,
7 ~ 8%, 7 ~ 8% and 6 ~ 7%; The net order number of 1 ~ No. 5 net cage outer net is 70 ~ 80 orders, and the net order number of 1 ~ No. 5 net cage Intranet is 12 ~ 14 orders.
4. the preparation method of metal backing formula sound barrier back up pad according to claim 1, it is characterized in that: in step a, each raw material by weight proportioning is: 18 parts of log paddle boards, 62 parts of cement, 3.5 parts, vinylon, 4.5 parts of sepiolites, 3.5 parts, flyash, particle diameter is 6.5 parts of 180 object silica flours, 11 parts of dicalcium powders, and 1 part of mica powder.
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| CN201310422157.9A CN103524082B (en) | 2013-09-17 | 2013-09-17 | Manufacturing method of metal plugboard type sound barrier supporting plate |
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| CN201310422157.9A CN103524082B (en) | 2013-09-17 | 2013-09-17 | Manufacturing method of metal plugboard type sound barrier supporting plate |
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| CN103524082A true CN103524082A (en) | 2014-01-22 |
| CN103524082B CN103524082B (en) | 2015-07-08 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1915890A (en) * | 2006-09-04 | 2007-02-21 | 大连理工大学 | Self-dense concrete of mixed fiber with fly ash in use for prefabricated acoustic barrier |
| CN101497215A (en) * | 2009-01-14 | 2009-08-05 | 中铁电气化局集团有限公司 | Modular reinforced concrete acoustical barrier and method for producing the same |
| CN101736853A (en) * | 2009-12-11 | 2010-06-16 | 中国建筑材料科学研究总院 | Fibre cement plate with high doping quantity of fly ash |
-
2013
- 2013-09-17 CN CN201310422157.9A patent/CN103524082B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1915890A (en) * | 2006-09-04 | 2007-02-21 | 大连理工大学 | Self-dense concrete of mixed fiber with fly ash in use for prefabricated acoustic barrier |
| CN101497215A (en) * | 2009-01-14 | 2009-08-05 | 中铁电气化局集团有限公司 | Modular reinforced concrete acoustical barrier and method for producing the same |
| CN101736853A (en) * | 2009-12-11 | 2010-06-16 | 中国建筑材料科学研究总院 | Fibre cement plate with high doping quantity of fly ash |
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