CN110015885A - A kind of preparation method of high intensity low-frequency sound-absorbing plate - Google Patents
A kind of preparation method of high intensity low-frequency sound-absorbing plate Download PDFInfo
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- CN110015885A CN110015885A CN201910325936.4A CN201910325936A CN110015885A CN 110015885 A CN110015885 A CN 110015885A CN 201910325936 A CN201910325936 A CN 201910325936A CN 110015885 A CN110015885 A CN 110015885A
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Abstract
The invention belongs to building material technical fields, and in particular to a kind of preparation method of high intensity low-frequency sound-absorbing plate.The present invention obtains grout mix with flyash, cement, the plaster of paris, quick lime mixing and ball milling, and flyash, quick lime, the plaster of paris form hydraulic cementing materials as aglite, formed with the high-intensitive haydite with sound absorption function；Preoxided thread and polyvinyl alcohol water solution are put into graphite jig, carbon fiber product can be formed around porous ceramic grain, obtain Lightweight acoustic panel, co-blended spinning stoste is prepared using two kinds of polymer, sound is set to be converted into thermal energy, polyvinyl alcohol water solution will form the polymer of conjugated double bond by thermal decomposition after gel and generate gas, the low frequency noise of long wavelength can be cut into the high frequency noise of short wavelength, convenient for the absorption of internal haydite, thus abatvoix of the invention tool can be improved the absorptivity of low frequency noise, have broad application prospects.
Description
Technical field
The invention belongs to building material technical fields, and in particular to a kind of preparation method of high intensity low-frequency sound-absorbing plate.
Background technique
Abatvoix refers to the material with sound-absorbing noise reduction effect of plate, is mainly used in cinema, music hall, natural science
Shop, exhibition center, library, hearing room, gallery, auction hall, gymnasium, Conference Hall, multifunctional hall, hotel lobby, hospital, quotient
Field, school, qin room, meeting room, studio, recording studio, karaoke chamber, bar, industrial premises, computer room, family's noise reduction etc. are to acoustics
Environmental requirement is higher and the place of top grade decoration.
Abatvoix is divided into Wooden sound-absorbing plate, mineral wool abatvoix, fabrics abatvoix, polyester fiber sound-absorbing according to making material
Plate, five major class of sound-absorbing metal plate.Wherein, Wooden sound-absorbing plate is process according to Principles of Acoustics；The surface of mineral wool abatvoix is covered with
The different hole in the depth, shape, aperture；The core material of fabrics abatvoix is centrifugally glass-wool；Polyester fibre acoustic panel
It is a kind of ideal sound-proof decorative materials.Its raw material is 100% polyester fiber, has sound-absorbing, environmental protection, fire-retardant, heat-insulated, guarantor
Warm, moisture-proof, anti-mildew, easy dedusting, easily cutting, can parquets, easy construction, stability be good, strong shock resistance；Sound-absorbing metal plate
It is that there is the pyrometric cone of an oval micropore at the bottom surface of a metal plate recessed many cone bottoms of gathering, and in metal plate
Top surface setting tool is configured to fine undaform surface, and upper peripheral is also recessed at ellipse micropore corresponding on undaform surface
Pyrometric cone is shaped, the sound wave of reflection mutually collides interference and generates decaying, meanwhile, even if acoustic wave segment will penetrate pyrometric cone cone bottom
Oval micropore, will also result in sound wave transmission loss, reach sound-absorbing effect.
Polyester fibre acoustic panel full name is polyester fiber decoration acoustic panel, be one kind using polyester fiber is raw material through being hot pressed into
The ornament materials of sound absorption function is had both made of type.It includes some polyester fibers and other for being mainly in polyester fibre acoustic panel
Fiber multihole sound-absorbing material, such as centrifugally glass-wool, rock wool, mineral wool, plant fiber spraying, sound absorbing mechanism is that material internal has
The hole of a large amount of small connections, sound wave can go deep into material internal along these holes, and rubbing action occurs by sound with material
Thermal energy can be converted into.The sound absorption characteristics of sound-absorbing porous material are as the acoustic absorptivity that increases of frequency is gradually increased, it means that
It is good that low frequency absorbs no high-frequency absorption.The necessary condition of porous material sound absorption is: material has a large amount of gaps, is mutually connected between gap
Logical, hole gos deep into material internal.Polyester fibre acoustic panel is similar with the acoustical absorbance properties of other porous materials, and sound-absorption coefficient is with frequency
Raising and increase, the sound-absorption coefficient of high frequency is very big, back leave a blank chamber and with it constitute space acoustic(al)absorbent can mention significantly
The sound absorption qualities of high material.Noise reduction coefficient substantially 0.8~1.10 or so, becomes wide band high-efficiency sound-absorbing body.
In recent years, with the development of economy the problem of noise pollution is also exacerbated while, noise drastically influences resident
Normal life and human health, become one of mankind's urgent problem to be solved.
Abatvoix is a kind of ideal sound-proof decorative materials, is generally suppressed through various powders with certain proportion, tool
Have that sound-absorbing, environmental protection, fire-retardant, heat-insulated, heat preservation, moisture-proof, anti-mildew, easy dedusting, easily cutting, easy construction, stability is good, shock resistance
The advantages that ability is good, cost performance is high.It is mainly used for the place more demanding to insulating noise, such as: music hall, is drilled at cinema
It broadcasts in the building such as the Room, meeting room, gymnasium, exhibition center, dancing hall, Conference Hall.Abatvoix exists at present: abatvoix makes an uproar to low frequency
The assimilation effect of sound is general, abatvoix impact strength, compression strength and counter-bending breaking load intensity, the problems such as density is general.
Therefore, inventing the excellent abatvoix of one kind has positive effect to the field of building materials.
Summary of the invention
Present invention mainly solves the technical issues of, in the big railway traffic website of current flow of the people largely be low frequency
Noise, common abatvoix noise reduction effect is unobvious, and low density acoustic plate intensity is low, high density abatvoix transportation cost and construction
The higher defect of difficulty provides a kind of preparation method of high-intensitive low-frequency sound-absorbing plate.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
A kind of preparation method of high intensity low-frequency sound-absorbing plate, it is characterised in that specific preparation step are as follows:
Porous ceramic grain, silane resin acceptor kh-550, humic acid foundry loam, the polyvinyl alcohol water solution that mass fraction is 5% are placed in stone
In black mold, adds borax and carry out gelation, preoxided thread is uniformly put into gelation process, then graphite jig is closed
After be put into resistance furnace, be filled with nitrogen as protective gas to resistance furnace, temperature programming, heat preservation carbonization 50~60min is naturally cold
But to demoulding after room temperature, high-intensitive low-frequency sound-absorbing plate is obtained；
The specific preparation step of the porous ceramic grain are as follows:
(1) flyash, cement, the plaster of paris, quick lime are mixed and is placed in 3~4h of ball milling in ball mill, crossed 200 meshes, filled
Mixture is starched, foaming agent is dissolved with distilled water, prepares the foaming agent solution that mass fraction is 5%；
(2) according to parts by weight, 100~120 parts of water, 8~10 parts of foaming agents are added into 40~50 parts of above-mentioned grout mixs
Solution is put into the raw material ball for being made that partial size is 2~3mm in marble forming machine, and it is 100~110 DEG C that raw material ball, which is placed in set temperature,
In baking oven, dry 2~3h is put into Muffle furnace, heat temperature raising, preheats 10~15min, then heat up, roasts 15~20min, stop
It only heats, after cooled to room temperature, discharging obtains porous ceramic grain；
The specific preparation step of the preoxided thread are as follows:
(1) the warm and fine polymethyl methacrylate of polypropylene is mixed, obtains mixed polymer, disperses N-N for mixed polymer
In dimethylformamide, it is mixed with magnetic stirring apparatus with the revolving speed of 300~500r/min, until mixed polymer is completely molten
Solution obtains Polymer Solution, and controlling Solute mass content in solution is 20~30%, and solution temperature is 60~70 DEG C；
(2) above-mentioned Polymer Solution is placed in a beaker, is placed the beaker in water-bath, be heated to 65~70 DEG C, heat preservation
Deaeration 20~for 24 hours, co-blended spinning stoste is obtained, co-blended spinning stoste is poured into manifold, precursor is sprayed in spinneret, it is former
Silk is successively brought into three coagulating tanks by roller, and by coagulating bath, treated that gray filament winding is collected to obtain preoxided thread；
The specific preparation step of humic acid foundry loam are as follows:
20~25min is stirred with 4~5 times of distillation water dispersion after taking peat to roughly grind 400 meshes, quality point is added dropwise into beaker
The hydrochloric acid that number is 10%, obtains suspension, gained suspension is placed in high speed centrifugation dispersion machine, with 3000~3500r/min's
Lower sediment is placed in baking oven, is heated to 80~90 by 10~15min of revolving speed centrifugal treating, isolated lower sediment
DEG C, drying obtains humic acid foundry loam.
Each component raw material in the high-intensitive specific preparation step of low-frequency sound-absorbing plate, according to parts by weight, including 70~
80 parts of porous ceramic grains, 4~5 parts of silane resin acceptor kh-550s, 10~12 parts of humic acid foundry loams, 40~50 parts of mass fractions are 5%
Polyvinyl alcohol water solution, 4~5 parts of boraxs, 20~25 parts of preoxided threads.
Programmed rate is 5~10 DEG C/min in the high-intensitive specific preparation step of low-frequency sound-absorbing plate, keeps the temperature charcoal
Changing process control temp is 1200~1400 DEG C.
Each raw material in grout mix in the specific preparation step of the porous ceramic grain (1), including 90~100 parts of fine coal
Ash, 20~25 parts of cement, 8~10 parts of plaster of paris, 4~5 parts of quick limes.
Foaming agent is ammonium carbonate, ammonium hydrogen carbonate, sodium carbonate, bicarbonate in the specific preparation step of the porous ceramic grain (1)
One kind of sodium, sodium abietate.
In the specific preparation step of the porous ceramic grain (2) preheating temperature be 400~450 DEG C, maturing temperature be 1100~
1150℃。
The warm and fine polymethyl methacrylate mixing mass ratio of polypropylene is in the specific preparation step of the preoxided thread (1)
7 ︰ 3.
It is 50%N-N dimethyl that three coagulating basins, which are sequentially arranged with mass fraction, in the specific preparation step of the preoxided thread
The aqueous solution of formamide, 50~55 DEG C of water, 95~100 DEG C of boiling water.
Dropwise addition hydrochloric acid needs are added dropwise to no gas during preparing suspension in the specific preparation step of humic acid foundry loam
Bubble generates, and can stop.
The beneficial effects of the present invention are:
(1) present invention with flyash, cement, the plaster of paris, quick lime mixing and ball milling obtains grout mix, by grout mix,
Water and foaming agent solution are mixed to prepare raw material ball, obtain porous ceramic grain by drying, preheating, roasting, by the warm and fine poly- first of polypropylene
The mixing of base methyl acrylate, obtains mixed polymer, mixed polymer is dissolved in N-N dimethylformamide, macromolecule is obtained
Polymer Solution heat temperature raising is kept the temperature deaeration and obtains co-blended spinning stoste, co-blended spinning stoste is placed in manifold by solution
In, precursor is spun, precursor is by three coagulating tank processing, and winding is collected and obtains preoxided thread, finally by porous ceramic grain, silane
Coupling agent, humic acid foundry loam, polyvinyl alcohol water solution are placed in mold, first plus borax gelation, in gelation process uniformly
Preoxided thread is added, places into heat preservation charing in resistance furnace and obtains high-intensitive low-frequency sound-absorbing plate, during the present invention prepares haydite,
Flyash, quick lime, the plaster of paris are as aglite, and vitreum is mainly aluminium oxide and silica in flyash, utilize life
Lime is reacted with water generates calcium hydroxide, and water reacts when contacting, and discharges a large amount of heat, can promote vitreum in flyash
The dissolution of middle silicon salt and aluminium salt excites flyash activity, under the influence of sulfate, the silicon salt and aluminium salt and hydrogen that dissolve out in vitreum
Calcium oxide reacts, and aquation generates aluminium silicate hydrate and hydrated calcium silicate, forms hydraulic cementing materials, then by preferably sending out
The foaming effect of infusion such as ammonium hydrogen carbonate is formed with the high-intensitive haydite with sound absorption function；
(2) preoxided thread and polyvinyl alcohol water solution are put into graphite jig in the present invention, then after gel solidification, by preoxided thread
It between fixed coupling humic acid foundry loam and haydite, is being sintered, can be being formed around porous ceramic grain in resistance furnace under nitrogen protection
Carbon fiber product obtains Lightweight acoustic panel, and the present invention prepares co-blended spinning stoste using two kinds of polymer, since two kinds of blendings are poly-
The molecular weight of object and the difference of property are closed, so that fibrous inside generation mutually separates in spinning, forms " sea-island " structure,
Middle continuous phase by pre-oxidation, carbonization etc. after heat treatments, the dispersed phase of script it is ablated fall, to generate in the carbon fibers
Hole, formation are held one's breath hole, and the dispersed phase being ablated off is filled between carbon fiber in gap, enhance the frictional resistance between carbon fiber,
In sound-absorbing vibration, rubs mutually heat between carbon fiber enables sound to be converted into thermal energy, and polyvinyl alcohol water solution is heated after gel
It decomposes the polymer that will form conjugated double bond and generates gas, the fibrosis formation of abatvoix is tangled, form complicated isolation
The low frequency noise of long wavelength can be cut into the high frequency noise of short wavelength by gap, convenient for the absorption of internal haydite, thus this hair
Bright abatvoix tool can be improved the absorptivity of low frequency noise, have broad application prospects.
Specific embodiment
According to parts by weight, by 90~100 parts of flyash, 20~25 parts of cement, 8~10 parts of plaster of paris, 4~5 parts of raw stones
Ash mixing is placed in 3~4h of ball milling in ball mill, crosses 200 meshes, obtains grout mix, foaming agent is dissolved with distilled water, is obtained
The foaming agent solution for being 5% to mass fraction, the foaming agent are ammonium carbonate, ammonium hydrogen carbonate, sodium carbonate, sodium bicarbonate, rosin
One kind of sour sodium；According to parts by weight, 100~120 parts of water, 8~10 parts of hairs are added into 40~50 parts of above-mentioned grout mixs
Infusion solution is put into the raw material ball for being made that partial size is 2~3mm in marble forming machine, and it is 100~110 that raw material ball, which is placed in set temperature,
DEG C baking oven in, dry 2~3h is put into Muffle furnace, is heated to 400~450 DEG C, preheats 10~15min, then be warming up to
1100~1150 DEG C, 15~20min is roasted, stops heating, after cooled to room temperature, discharging obtains porous ceramic grain；By poly- third
The warm and fine polymethyl methacrylate of alkene is 7 ︰ 3 mixing in mass ratio, obtains mixed polymer, disperses N-N for mixed polymer
In dimethylformamide, it is mixed with magnetic stirring apparatus with the revolving speed of 300~500r/min, until mixed polymer is completely molten
Solution obtains Polymer Solution, and controlling Solute mass content in solution is 20~30%, and solution temperature is 60~70 DEG C；By above-mentioned height
Molecular solution is placed in a beaker, and is placed the beaker in water-bath, is heated to 65~70 DEG C, and heat preservation deaeration 20~for 24 hours, it obtains
Co-blended spinning stoste pours into co-blended spinning stoste in manifold, and precursor is sprayed in spinneret, and precursor is successively brought by roller
Three coagulating tanks are the aqueous solution of 50%N-N dimethylformamide, the second solidification equipped with mass fraction in the first coagulating tank
50~55 DEG C of water is housed in bath, 95~100 DEG C of boiling water is housed in third coagulating tank, by coagulating bath treated precursor
Winding is collected and obtains preoxided thread；20~25min is stirred with 4~5 times of distillation water dispersion after taking peat to roughly grind 400 meshes,
It is 10% hydrochloric acid up to bubble-free generation that mass fraction is added dropwise into beaker, obtains suspension, gained suspension is placed in high speed
In Centrifugal dispersion machine, with 10~15min of revolving speed centrifugal treating of 3000~3500r/min, isolated lower sediment, by lower layer
Precipitating is placed in baking oven, is heated to 80~90 DEG C, drying obtains humic acid foundry loam；According to parts by weight, by 70~80 parts
The poly- second that porous ceramic grain, 4~5 parts of silane resin acceptor kh-550s, 10~12 parts of humic acid foundry loams, 40~50 parts of mass fractions are 5%
Enol aqueous solution is placed in graphite jig, is added 4~5 parts of boraxs and is carried out gelation, 20 are uniformly put into gelation process
~25 parts of preoxided threads, then be put into resistance furnace after graphite jig is closed are filled with nitrogen as protective gas to resistance furnace, with
The heating rate temperature programming of 5~10 DEG C/min is to 1200~1400 DEG C, heat preservation 50~60min of carbonization, cooled to room temperature
After demould, obtain high-intensitive low-frequency sound-absorbing plate.
Foaming agent are as follows: the preparation of ammonium carbonate foaming agent: according to parts by weight, by 90 parts of flyash, 20 parts of cement, 8 parts it is ripe
Gypsum, 4 parts of quick lime mixing are placed in ball milling 3h in ball mill, cross 200 meshes, obtain grout mix, foaming agent is distilled
Water dissolution, obtains the foaming agent solution that mass fraction is 5%, and the foaming agent is ammonium carbonate, ammonium hydrogen carbonate, sodium carbonate, carbonic acid
One kind of hydrogen sodium, sodium abietate:
The preparation of porous ceramic grain:
According to parts by weight, 100 parts of water, 8 parts of foaming agent solutions are added into 40 parts of above-mentioned grout mixs, are put into marble forming machine
The raw material ball that partial size is 2mm is made, raw material ball is placed in the baking oven that set temperature is 100 DEG C, dry 2h is put into Muffle furnace
In, 400 DEG C are heated to, preheats 10min, then be warming up to 1100 DEG C, roasts 15min, stops heating, cooled to room temperature
Afterwards, discharging obtains porous ceramic grain；
The preparation of Polymer Solution:
In mass ratio it is that 7 ︰ 3 are mixed by the warm and fine polymethyl methacrylate of polypropylene, mixed polymer is obtained, by mixed polymer
It is scattered in N-N dimethylformamide, is mixed with magnetic stirring apparatus with the revolving speed of 300r/min, until mixed polymer is complete
Fully dissolved obtains Polymer Solution, and controlling Solute mass content in solution is 20%, and solution temperature is 60 DEG C；
The preparation of preoxided thread:
Above-mentioned Polymer Solution is placed in a beaker, is placed the beaker in water-bath, is heated to 65 DEG C, keeps the temperature deaeration 20h,
Obtain co-blended spinning stoste, co-blended spinning stoste poured into manifold, sprayed precursor in spinneret, precursor by roller successively
It brings three coagulating tanks into, is the aqueous solution of 50%N-N dimethylformamide equipped with mass fraction in the first coagulating tank, second
50 DEG C of water is housed in coagulating tank, 95 DEG C of boiling water is housed in third coagulating tank, by coagulating bath treated gray filament winding
Collection obtains preoxided thread；
The preparation of humic acid foundry loam:
20min is stirred with 4 times of distillation water dispersion after taking peat to roughly grind 400 meshes, it is 10% that mass fraction is added dropwise into beaker
Hydrochloric acid until bubble-free generate, obtain suspension, gained suspension be placed in high speed centrifugation dispersion machine, with 3000r/min
Revolving speed centrifugal treating 10min, lower sediment is placed in baking oven by isolated lower sediment, is heated to 80 DEG C, drying
Obtain humic acid foundry loam；
The preparation of high-intensitive low-frequency sound-absorbing plate:
According to parts by weight, by 70 parts of porous ceramic grains, 4 parts of silane resin acceptor kh-550s, 10 parts of humic acid foundry loams, 40 parts of quality point
Number is placed in graphite jig for 5% polyvinyl alcohol water solution, is added 4 parts of boraxs and is carried out gelation, in gelation process
It is even to be put into 20 parts of preoxided threads, then be put into resistance furnace after graphite jig is closed, nitrogen is filled with as protection gas to resistance furnace
Body keeps the temperature carbonization 50min, demoulds, obtain after cooled to room temperature with the heating rate temperature programming of 5 DEG C/min to 1200 DEG C
To high-intensitive low-frequency sound-absorbing plate.
Foaming agent are as follows: the preparation of ammonium hydrogen carbonate foaming agent: according to parts by weight, by 95 parts of flyash, 22.5 parts of cement, 9
Part plaster of paris, 4.5 parts of quick limes mixing are placed in ball milling 3.5h in ball mill, cross 200 meshes, obtain grout mix, will foam
Agent is dissolved with distilled water, obtains the foaming agent solution that mass fraction is 5%, and the foaming agent is ammonium carbonate, ammonium hydrogen carbonate, carbon
One kind of sour sodium, sodium bicarbonate, sodium abietate:
The preparation of porous ceramic grain:
According to parts by weight, 110 parts of water, 9 parts of foaming agent solutions are added into 45 parts of above-mentioned grout mixs, are put into marble forming machine
The raw material ball that partial size is 2.5mm is made, raw material ball is placed in the baking oven that set temperature is 105 DEG C, dry 2.5h is put into Muffle
In furnace, 425 DEG C are heated to, preheats 12.5min, then be warming up to 1125 DEG C, roasts 17.5min, stops heating, natural cooling
To room temperature, discharging obtains porous ceramic grain；
The preparation of Polymer Solution:
In mass ratio it is that 7 ︰ 3 are mixed by the warm and fine polymethyl methacrylate of polypropylene, mixed polymer is obtained, by mixed polymer
It is scattered in N-N dimethylformamide, is mixed with magnetic stirring apparatus with the revolving speed of 400r/min, until mixed polymer is complete
Fully dissolved obtains Polymer Solution, and controlling Solute mass content in solution is 25%, and solution temperature is 65 DEG C；
The preparation of preoxided thread:
Above-mentioned Polymer Solution is placed in a beaker, is placed the beaker in water-bath, is heated to 67.5 DEG C, keeps the temperature deaeration
22h obtains co-blended spinning stoste, and co-blended spinning stoste is poured into manifold, and through spraying precursor in spinneret, precursor is by roller
It successively brings three coagulating tanks into, the aqueous solution that mass fraction is 50%N-N dimethylformamide is housed in the first coagulating tank,
52.5 DEG C of water is housed in the second gelation slot, 97.5 DEG C of boiling water is housed, treated by coagulating bath in third coagulating tank
Gray filament winding is collected to obtain preoxided thread；
The preparation of humic acid foundry loam:
22.5min is stirred with 4.5 times of distillation water dispersion after taking peat to roughly grind 400 meshes, mass fraction is added dropwise into beaker
For 10% hydrochloric acid until bubble-free generate, obtain suspension, gained suspension be placed in high speed centrifugation dispersion machine, with
Lower sediment is placed in baking oven, heat temperature raising by the revolving speed centrifugal treating 12.5min of 3250r/min, isolated lower sediment
To 85 DEG C, drying obtains humic acid foundry loam；
The preparation of high-intensitive low-frequency sound-absorbing plate:
According to parts by weight, by 75 parts of porous ceramic grains, 4.5 parts of silane resin acceptor kh-550s, 11 parts of humic acid foundry loams, 45 parts of quality
The polyvinyl alcohol water solution that score is 5% is placed in graphite jig, is added 4.5 parts of boraxs and is carried out gelation, in gelation process
In be uniformly put into 22.5 parts of preoxided threads, then be put into resistance furnace after graphite jig is closed, be filled with nitrogen conduct to resistance furnace
Protective gas, with the heating rate temperature programming of 7.5 DEG C/min to 1300 DEG C, heat preservation carbonization 55min, after cooled to room temperature
Demoulding, obtains high-intensitive low-frequency sound-absorbing plate.
Foaming agent are as follows: the preparation of sodium carbonate foaming agent: according to parts by weight, by 100 parts of flyash, 25 parts of cement, 10 parts
The plaster of paris, 5 parts of quick lime mixing are placed in ball milling 4h in ball mill, cross 200 meshes, obtain grout mix, foaming agent is steamed
Distilled water dissolution, obtains the foaming agent solution that mass fraction is 5%, and the foaming agent is ammonium carbonate, ammonium hydrogen carbonate, sodium carbonate, carbon
One kind of sour hydrogen sodium, sodium abietate:
The preparation of porous ceramic grain:
According to parts by weight, 120 parts of water, 10 parts of foaming agent solutions are added into 50 parts of above-mentioned grout mixs, are put into marble forming machine
In the raw material ball that partial size is 3mm is made, it is in 110 DEG C of baking oven that raw material ball, which is placed in set temperature, and dry 3h is put into Muffle furnace
In, 450 DEG C are heated to, preheats 15min, then be warming up to 1150 DEG C, roasts 20min, stops heating, cooled to room temperature
Afterwards, discharging obtains porous ceramic grain；
The preparation of Polymer Solution:
In mass ratio it is that 7 ︰ 3 are mixed by the warm and fine polymethyl methacrylate of polypropylene, mixed polymer is obtained, by mixed polymer
It is scattered in N-N dimethylformamide, is mixed with magnetic stirring apparatus with the revolving speed of 500r/min, until mixed polymer is complete
Fully dissolved obtains Polymer Solution, and controlling Solute mass content in solution is 30%, and solution temperature is 70 DEG C；
The preparation of preoxided thread:
Above-mentioned Polymer Solution is placed in a beaker, is placed the beaker in water-bath, is heated to 70 DEG C, keeps the temperature deaeration for 24 hours,
Obtain co-blended spinning stoste, co-blended spinning stoste poured into manifold, sprayed precursor in spinneret, precursor by roller successively
It brings three coagulating tanks into, is the aqueous solution of 50%N-N dimethylformamide equipped with mass fraction in the first coagulating tank, second
55 DEG C of water is housed in coagulating tank, 100 DEG C of boiling water is housed in third coagulating tank, by coagulating bath treated gray filament winding
Collection obtains preoxided thread；
The preparation of humic acid foundry loam:
25min is stirred with 5 times of distillation water dispersion after taking peat to roughly grind 400 meshes, it is 10% that mass fraction is added dropwise into beaker
Hydrochloric acid until bubble-free generate, obtain suspension, gained suspension be placed in high speed centrifugation dispersion machine, with 3500r/min
Revolving speed centrifugal treating 15min, lower sediment is placed in baking oven by isolated lower sediment, is heated to 90 DEG C, drying
Obtain humic acid foundry loam；
The preparation of high-intensitive low-frequency sound-absorbing plate:
According to parts by weight, by 80 parts of porous ceramic grains, 5 parts of silane resin acceptor kh-550s, 12 parts of humic acid foundry loams, 50 parts of quality point
Number is placed in graphite jig for 5% polyvinyl alcohol water solution, is added 5 parts of boraxs and is carried out gelation, in gelation process
It is even to be put into 25 parts of preoxided threads, then be put into resistance furnace after graphite jig is closed, nitrogen is filled with as protection gas to resistance furnace
Body keeps the temperature carbonization 60min, demoulds, obtain after cooled to room temperature with the heating rate temperature programming of 10 DEG C/min to 1400 DEG C
To high-intensitive low-frequency sound-absorbing plate.
Comparative example 1 and the preparation method of example 1 are essentially identical, have only the difference is that lacking Polymer Solution.
Comparative example 2 and the preparation method of example 1 are essentially identical, have only the difference is that lacking humic acid foundry loam.
The abatvoix of 3 Zhenjiang company of comparative example production.
Performance detection is carried out to the abatvoix in the present invention and comparative example respectively, testing result is as shown in table 1:
Detection method:
The test of sound-absorption coefficient carries out performance detection by the standard of ISO9001.
The test of density carries out performance detection by the regulation of GB/T22308-2008.
The test of compression strength, flexural strength, fracture load by bending is detected according to the regulation of GB/T1935--009.
1 abatvoix energy measurement result of table
From upper table 1, it can be seen that, sound-absorbing effect is good at low frequencies for abatvoix produced by the present invention, and density is high, compression strength,
Flexural strength, fracture load by bending are all very excellent, have good sound-absorbing effect and impact strength, before having wide application
Scape.
The foregoing is merely preferred modes of the invention, are not intended to limit the invention, all in spirit and original of the invention
Within then, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of preparation method of high intensity low-frequency sound-absorbing plate, it is characterised in that specific preparation step are as follows:
Porous ceramic grain, silane resin acceptor kh-550, humic acid foundry loam, the polyvinyl alcohol water solution that mass fraction is 5% are placed in stone
In black mold, adds borax and carry out gelation, preoxided thread is uniformly put into gelation process, then graphite jig is closed
After be put into resistance furnace, be filled with nitrogen as protective gas to resistance furnace, temperature programming, heat preservation carbonization 50~60min is naturally cold
But to demoulding after room temperature, high-intensitive low-frequency sound-absorbing plate is obtained；
The specific preparation step of the porous ceramic grain are as follows:
(1) flyash, cement, the plaster of paris, quick lime are mixed and is placed in 3~4h of ball milling in ball mill, crossed 200 meshes, filled
Mixture is starched, foaming agent is dissolved with distilled water, prepares the foaming agent solution that mass fraction is 5%；
(2) according to parts by weight, 100~120 parts of water, 8~10 parts of foaming agents are added into 40~50 parts of above-mentioned grout mixs
Solution is put into the raw material ball for being made that partial size is 2~3mm in marble forming machine, and it is 100~110 DEG C that raw material ball, which is placed in set temperature,
In baking oven, dry 2~3h is put into Muffle furnace, heat temperature raising, preheats 10~15min, then heat up, roasts 15~20min, stop
It only heats, after cooled to room temperature, discharging obtains porous ceramic grain；
The specific preparation step of the preoxided thread are as follows:
(1) the warm and fine polymethyl methacrylate of polypropylene is mixed, obtains mixed polymer, disperses N-N for mixed polymer
In dimethylformamide, it is mixed with magnetic stirring apparatus with the revolving speed of 300~500r/min, until mixed polymer is completely molten
Solution obtains Polymer Solution, and controlling Solute mass content in solution is 20~30%, and solution temperature is 60~70 DEG C；It (2) will be upper
It states Polymer Solution to be placed in a beaker, place the beaker in water-bath, be heated to 65~70 DEG C, heat preservation deaeration 20~for 24 hours,
Obtain co-blended spinning stoste, co-blended spinning stoste poured into manifold, sprayed precursor in spinneret, precursor by roller successively
Bring three coagulating tanks into, treated that gray filament winding is collected to obtain preoxided thread by coagulating bath；
The specific preparation step of humic acid foundry loam are as follows:
20~25min is stirred with 4~5 times of distillation water dispersion after taking peat to roughly grind 400 meshes, quality point is added dropwise into beaker
The hydrochloric acid that number is 10%, obtains suspension, gained suspension is placed in high speed centrifugation dispersion machine, with 3000~3500r/min's
Lower sediment is placed in baking oven, is heated to 80~90 by 10~15min of revolving speed centrifugal treating, isolated lower sediment
DEG C, drying obtains humic acid foundry loam.
2. a kind of preparation method of high-intensitive low-frequency sound-absorbing plate according to claim 1, it is characterised in that: described is high-strength
Each component raw material in the specific preparation step of low-frequency sound-absorbing plate is spent, according to parts by weight, including 70~80 parts of porous ceramic grains, 4~5 parts
Silane resin acceptor kh-550,10~12 parts of humic acid foundry loams, the polyvinyl alcohol water solution that 40~50 parts of mass fractions are 5%, 4~5
Part borax, 20~25 parts of preoxided threads.
3. a kind of preparation method of high-intensitive low-frequency sound-absorbing plate according to claim 1, it is characterised in that: described is high-strength
Spend the specific preparation step of low-frequency sound-absorbing plate in programmed rate be 5~10 DEG C/min, keep the temperature carbonization process controlled at
1200~1400 DEG C.
4. a kind of preparation method of high-intensitive low-frequency sound-absorbing plate according to claim 1, it is characterised in that: described is porous
Each raw material in grout mix in the specific preparation step of haydite (1), including 90~100 parts of flyash, 20~25 parts of cement, 8~
10 parts of plaster of paris, 4~5 parts of quick limes.
5. a kind of preparation method of high-intensitive low-frequency sound-absorbing plate according to claim 1, it is characterised in that: described is porous
Foaming agent is one kind of ammonium carbonate, ammonium hydrogen carbonate, sodium carbonate, sodium bicarbonate, sodium abietate in the specific preparation step of haydite (1).
6. a kind of preparation method of high-intensitive low-frequency sound-absorbing plate according to claim 1, it is characterised in that: described is porous
Preheating temperature is 400~450 DEG C in the specific preparation step of haydite (2), and maturing temperature is 1100~1150 DEG C.
7. a kind of preparation method of high-intensitive low-frequency sound-absorbing plate according to claim 1, it is characterised in that: the pre- oxygen
Changing the warm and fine polymethyl methacrylate mixing mass ratio of polypropylene in the specific preparation step of silk (1) is 7 ︰ 3.
8. a kind of preparation method of high-intensitive low-frequency sound-absorbing plate according to claim 1, it is characterised in that: the pre- oxygen
Changing three coagulating basins in the specific preparation step of silk to be sequentially arranged with mass fraction is the aqueous solution of 50%N-N dimethylformamide, 50
~55 DEG C of water, 95~100 DEG C of boiling water.
9. a kind of preparation method of high-intensitive low-frequency sound-absorbing plate according to claim 1, it is characterised in that: the humic
Dropwise addition hydrochloric acid needs to be added dropwise to bubble-free generation during preparing suspension in the sour specific preparation step of foundry loam, can stop.
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| CN111470790A (en) * | 2020-04-03 | 2020-07-31 | 桂林理工大学 | Sound-absorbing ceramsite and preparation method and application thereof |
| CN114059737A (en) * | 2021-11-17 | 2022-02-18 | 瑞宇建设有限公司 | Curtain wall imitating thermal insulation decorative external wall panel construction process |
| CN114181434A (en) * | 2021-12-20 | 2022-03-15 | 丁倩 | High-viscosity environment-friendly reinforcing filler for rubber and preparation method thereof |
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