CN116283259A - Heavy high-strength sound-absorbing porous ceramic material and preparation method thereof - Google Patents
Heavy high-strength sound-absorbing porous ceramic material and preparation method thereof Download PDFInfo
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- CN116283259A CN116283259A CN202310353044.1A CN202310353044A CN116283259A CN 116283259 A CN116283259 A CN 116283259A CN 202310353044 A CN202310353044 A CN 202310353044A CN 116283259 A CN116283259 A CN 116283259A
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- perlite
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- feldspar powder
- magnesium oxide
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- 229910010293 ceramic material Inorganic materials 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 235000019362 perlite Nutrition 0.000 claims abstract description 82
- 239000010451 perlite Substances 0.000 claims abstract description 82
- 239000010433 feldspar Substances 0.000 claims abstract description 81
- 239000000843 powder Substances 0.000 claims abstract description 81
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 56
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000004088 foaming agent Substances 0.000 claims abstract description 44
- 239000002994 raw material Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 16
- 238000007781 pre-processing Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims description 81
- 238000006243 chemical reaction Methods 0.000 claims description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 66
- 238000002156 mixing Methods 0.000 claims description 40
- 238000003756 stirring Methods 0.000 claims description 31
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 28
- 230000001804 emulsifying effect Effects 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 27
- 238000001035 drying Methods 0.000 claims description 25
- 238000005406 washing Methods 0.000 claims description 23
- 229920002261 Corn starch Polymers 0.000 claims description 22
- 239000008120 corn starch Substances 0.000 claims description 22
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 21
- 239000008367 deionised water Substances 0.000 claims description 21
- 229910021641 deionized water Inorganic materials 0.000 claims description 21
- 238000006460 hydrolysis reaction Methods 0.000 claims description 21
- 239000002002 slurry Substances 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 19
- 239000002244 precipitate Substances 0.000 claims description 18
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 16
- 238000004132 cross linking Methods 0.000 claims description 15
- 239000000654 additive Substances 0.000 claims description 14
- 230000000996 additive effect Effects 0.000 claims description 14
- 238000005303 weighing Methods 0.000 claims description 14
- 238000005245 sintering Methods 0.000 claims description 11
- 238000007493 shaping process Methods 0.000 claims description 10
- 239000000375 suspending agent Substances 0.000 claims description 10
- 238000009833 condensation Methods 0.000 claims description 9
- 230000005494 condensation Effects 0.000 claims description 9
- 238000010992 reflux Methods 0.000 claims description 9
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 8
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 8
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 8
- 238000000967 suction filtration Methods 0.000 claims description 8
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 7
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 7
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 7
- 239000005642 Oleic acid Substances 0.000 claims description 7
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000002202 Polyethylene glycol Substances 0.000 claims description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 7
- 238000000703 high-speed centrifugation Methods 0.000 claims description 7
- 239000000413 hydrolysate Substances 0.000 claims description 7
- 239000003999 initiator Substances 0.000 claims description 7
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000314 lubricant Substances 0.000 claims description 7
- 238000003760 magnetic stirring Methods 0.000 claims description 7
- 239000002667 nucleating agent Substances 0.000 claims description 7
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 7
- 235000011837 pasties Nutrition 0.000 claims description 7
- 239000004014 plasticizer Substances 0.000 claims description 7
- 229920001223 polyethylene glycol Polymers 0.000 claims description 7
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 230000001007 puffing effect Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- 238000002791 soaking Methods 0.000 claims description 7
- 239000006228 supernatant Substances 0.000 claims description 7
- 238000009210 therapy by ultrasound Methods 0.000 claims description 7
- 238000002604 ultrasonography Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims 2
- 238000010521 absorption reaction Methods 0.000 abstract description 9
- 239000011148 porous material Substances 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 239000003607 modifier Substances 0.000 abstract 1
- 238000004945 emulsification Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
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Abstract
The invention discloses a heavy high-strength sound-absorbing porous ceramic material and a preparation method thereof, belonging to the technical field of ceramic materials, and comprising the following preparation methods: step 1: preprocessing feldspar powder, a foaming agent, perlite and magnesium oxide; step 2: the feldspar powder, the foaming agent, the perlite and the magnesia are pretreated and are mixed with other raw materials according to the weight portion. According to the invention, the prepared ceramic material has excellent sound absorption performance, the pretreated perlite and the prepared foaming agent are used as main raw materials, the prepared ceramic material has a multi-layer structure with different thicknesses and different pore sizes, the viscous resistance of sound waves is effectively increased by changing the pore sizes, the sound absorption performance of the ceramic material is greatly improved, the surface of the perlite is treated by using the silane coupling agent as a modification modifier, and the pretreated perlite is used as a main base material, so that the prepared ceramic material has excellent sound absorption characteristic.
Description
Technical Field
The invention belongs to the technical field of ceramic materials, and particularly relates to a heavy high-strength sound-absorbing porous ceramic material and a preparation method thereof.
Background
Ceramic materials refer to a class of inorganic nonmetallic materials made from natural or synthetic compounds by forming and high temperature sintering. It has the advantages of high melting point, high hardness, high wear resistance, oxidation resistance, etc. The ceramic can be used as a structural material and a cutter material, and can be used as a functional material due to certain special properties of the ceramic.
The ceramic material air holes in the prior art have low aperture ratio, the sound absorption effect of the product is poor, the air hole diameter is single, and the ceramic material air holes are of a single-layer structure, so that the ceramic material air holes have limited sound absorption performance and cannot meet the noise reduction requirements of increasingly required requirements.
Based on the above, the invention designs a heavy high-strength sound-absorbing porous ceramic material and a preparation method thereof, so as to solve the problems.
Disclosure of Invention
The invention aims at: the heavy high-strength sound-absorbing porous ceramic material and the preparation method thereof are provided for solving the problems that the aperture ratio of the ceramic material air holes in the prior art is low, the sound-absorbing effect of the product is poor, the air hole diameter is single, most of the ceramic material air holes are of a single-layer structure, the sound-absorbing performance is limited, and the increasingly required noise reduction requirement cannot be met.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the preparation method of the heavy high-strength sound-absorbing porous ceramic material comprises the following steps:
step 1: preprocessing feldspar powder, a foaming agent, perlite and magnesium oxide;
step 2: preprocessing feldspar powder, a foaming agent, perlite and magnesium oxide, mixing with other raw materials according to the weight ratio, and uniformly mixing, wherein the raw materials are 50-80 parts of feldspar powder, 1-6 parts of foaming agent, 15-20 parts of perlite, 20-30 parts of magnesium oxide and 1-2 parts of suspending agent;
step 3: adding clear water into the mixed raw materials, and uniformly stirring to form slurry with proper viscosity and fluidity;
step 4: pouring the slurry into a mould to prepare blanks, and drying and shaping in the mould;
step 5: and placing the blank into a tunnel kiln for sintering and forming to obtain the ceramic material.
As a further description of the above technical solution:
the feldspar powder pretreatment comprises the following steps:
weighing a certain amount of silane coupling agent to prepare alcohol-water hydrolysate;
slowly dripping acetic acid solution into the alcohol-water solution, regulating the pH value of the alcohol-water solution to 3-5, and performing hydrolysis reaction treatment;
weighing a proper amount of feldspar powder, putting the feldspar powder into an alcohol-water solution subjected to hydrolysis reaction, and putting the alcohol-water solution mixed with the feldspar powder into microwave equipment for heating treatment;
and (3) carrying out microwave-assisted heat treatment under the condition of condensation and reflux to obtain the feldspar powder after heat treatment, and finally carrying out suction filtration and drying treatment on the feldspar powder in sequence to obtain the pretreated feldspar powder.
As a further description of the above technical solution:
the hydrolysis reaction treatment time is 50-60min, the heating treatment in the microwave equipment adopts a two-step heating process for heat treatment, and the microwave irradiation time in the heating treatment process in the microwave equipment is 18-20min.
As a further description of the above technical solution:
the foaming agent pretreatment comprises the following steps:
adding corn starch and deionized water into a chemical reaction kettle, and heating to 70-80 ℃;
stirring corn starch and deionized water in the process of heating the inside of the chemical reaction kettle until the corn starch is semitransparent or transparent pasty glue solution;
adding auxiliary materials into a chemical reaction kettle for cross-linking blending reaction, and obtaining the foaming agent under the environment of a certain temperature and mould pressing.
As a further description of the above technical solution:
the auxiliary materials comprise a nucleating agent, benzoyl peroxide, a lubricant, a plasticizer, a potassium persulfate initiator, styrene and polyvinyl alcohol, and the crosslinking blending reaction is kept for 3-3.4 hours in a vacuum environment at 80-86 ℃.
As a further description of the above technical solution:
the pretreatment of the perlite comprises the following steps:
putting a proper amount of perlite into a vacuum heating box for puffing treatment;
the perlite expands in the vacuum heating box, and then naturally cools in the vacuum heating box;
taking out the cooled perlite, putting the cooled perlite into a chemical reaction kettle, and adding a certain amount of ammonia water solution into the chemical reaction kettle for soaking treatment;
adding the soaked perlite and the silane coupling agent into a chemical reaction kettle, injecting a small amount of absolute ethyl alcohol, and mixing and stirring at a certain temperature to obtain the pretreated perlite.
As a further description of the above technical solution:
the pretreatment of the magnesium oxide comprises the following steps:
adding a certain amount of magnesium oxide into a chemical reaction kettle containing absolute ethyl alcohol, and stirring for a period of time by ultrasound and magnetic force;
after the ultrasonic and magnetic stirring treatment is completed, emulsifying treatment is carried out by using high-shear emulsifying equipment;
adding an additive into the emulsified turbid liquid, and reacting for a certain time at a certain temperature;
sequentially performing ultrasonic treatment and high-speed centrifugation after the reaction is completed, and skimming supernatant;
washing the precipitate obtained after centrifugal treatment for multiple times by using absolute ethyl alcohol, and finally washing the precipitate by using deionized water, and drying and sieving the precipitate after the washing to obtain pretreated magnesium oxide.
As a further description of the above technical solution:
the emulsifying time of the emulsification treatment by using high-shear emulsifying equipment is 18-20min, and the additive is oleic acid or polyethylene glycol.
As a further description of the above technical solution:
the fineness of the magnesium oxide is less than 1000 meshes, and the washing times of the precipitate obtained after the centrifugal treatment are not less than 3 times by using absolute ethyl alcohol.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. in the invention, the pretreated magnesium oxide has good dispersibility, a phase structure and good activation degree, the crystal structure is not changed while the dispersibility is improved, the sound absorption surface inside the ceramic material is further improved, the viscous effect and the heat exchange are more obvious, the prepared ceramic material has excellent sound absorption performance, the pretreated perlite and the prepared foaming agent are used as main raw materials, the prepared ceramic material has a multi-layer structure with different thicknesses and different pore sizes, the viscous resistance of sound waves is effectively increased by changing the pore size, the sound absorption performance of the ceramic material is greatly improved, the surface of the perlite is treated by using the silane coupling agent as a modifying agent, and the pretreated perlite is used as a main base material, so that the prepared ceramic material has excellent sound absorption property.
2. In the invention, benzoyl peroxide is used as a crosslinking auxiliary agent, corn starch subjected to styrene grafting treatment and polyvinyl alcohol are crosslinked and blended, the prepared foaming agent has higher tensile strength and impact strength, microwave-assisted heat treatment is carried out under the condition of condensation reflux, the feldspar powder after heat treatment is obtained, finally, the feldspar powder after pretreatment is obtained by sequentially carrying out suction filtration and drying treatment on the feldspar powder, the feldspar powder is pretreated by adopting a microwave-assisted method under the condition of condensation reflux, the interface contact angle of the pretreated feldspar powder is obviously increased, the surface is good in hydrophobicity, and the ceramic material prepared by mixing the prepared feldspar powder with other raw materials has good hydrophobicity and strength.
Drawings
FIG. 1 is a process flow diagram of a heavy high-strength sound-absorbing porous ceramic material and a preparation method thereof;
FIG. 2 is a flow chart of a process for pretreating feldspar powder in a heavy high-strength sound-absorbing porous ceramic material and a preparation method thereof;
FIG. 3 is a flow chart of a foaming agent pretreatment process in the preparation method of the heavy high-strength sound-absorbing porous ceramic material;
FIG. 4 is a flow chart of a perlite pretreatment process in a heavy high-strength sound-absorbing porous ceramic material and a preparation method thereof;
fig. 5 is a flow chart of a magnesium oxide pretreatment process in the heavy high-strength sound-absorbing porous ceramic material and the preparation method thereof.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The preparation method of the heavy high-strength sound-absorbing porous ceramic material comprises the following steps:
step 1: preprocessing feldspar powder;
step 2: mixing 50-80 parts of feldspar powder, 1-6 parts of foaming agent, 15-20 parts of perlite, 20-30 parts of magnesium oxide and 1-2 parts of suspending agent;
step 3: adding clear water into the mixed raw materials, and uniformly stirring to form slurry with proper viscosity and fluidity;
step 4: pouring the slurry into a mould to prepare blanks, and drying and shaping in the mould;
step 5: placing the blank into a tunnel kiln for sintering and forming to obtain a ceramic material;
the feldspar powder pretreatment comprises the following steps:
weighing a certain amount of silane coupling agent to prepare alcohol-water hydrolysate;
slowly dripping acetic acid solution into the alcohol-water solution, regulating the pH value of the alcohol-water solution to 3-5, and performing hydrolysis reaction treatment;
weighing a proper amount of feldspar powder, putting the feldspar powder into an alcohol-water solution subjected to hydrolysis reaction, and putting the alcohol-water solution mixed with the feldspar powder into microwave equipment for heating treatment;
performing microwave-assisted heat treatment under the condition of condensation and reflux to obtain heat-treated feldspar powder, and sequentially performing suction filtration and drying treatment on the feldspar powder to obtain pretreated feldspar powder;
the hydrolysis reaction treatment time is 50-60min, the heating treatment in the microwave equipment adopts a two-step heating process for heat treatment, and the microwave irradiation time in the heating treatment process in the microwave equipment is 18-20min.
Example two
The preparation method of the heavy high-strength sound-absorbing porous ceramic material comprises the following steps:
step 1: pretreating a foaming agent;
step 2: the foaming agent and other raw materials are mixed according to the weight proportion, and the mixing proportion of the raw materials is 50-80 parts of feldspar powder, 1-6 parts of foaming agent, 15-20 parts of perlite, 20-30 parts of magnesium oxide and 1-2 parts of suspending agent;
step 3: adding clear water into the mixed raw materials, and uniformly stirring to form slurry with proper viscosity and fluidity;
step 4: pouring the slurry into a mould to prepare blanks, and drying and shaping in the mould;
step 5: placing the blank into a tunnel kiln for sintering and forming to obtain a ceramic material;
the foaming agent pretreatment comprises the following steps:
adding corn starch and deionized water into a chemical reaction kettle, and heating to 70-80 ℃;
stirring corn starch and deionized water in the process of heating the inside of the chemical reaction kettle until the corn starch is semitransparent or transparent pasty glue solution;
adding auxiliary materials into a chemical reaction kettle for crosslinking blending reaction, and obtaining a foaming agent under a certain temperature and mould pressing environment;
the auxiliary materials comprise a nucleating agent, benzoyl peroxide, a lubricant, a plasticizer, a potassium persulfate initiator, styrene and polyvinyl alcohol, and the crosslinking blending reaction is kept for 3-3.4 hours in a vacuum environment at 80-86 ℃.
Example III
The preparation method of the heavy high-strength sound-absorbing porous ceramic material comprises the following steps:
step 1: pretreating perlite;
step 2: mixing perlite and other raw materials according to the weight ratio, and uniformly mixing, wherein the mixing ratio of the raw materials is 50-80 parts of feldspar powder, 1-6 parts of foaming agent, 15-20 parts of perlite, 20-30 parts of magnesium oxide and 1-2 parts of suspending agent;
step 3: adding clear water into the mixed raw materials, and uniformly stirring to form slurry with proper viscosity and fluidity;
step 4: pouring the slurry into a mould to prepare blanks, and drying and shaping in the mould;
step 5: placing the blank into a tunnel kiln for sintering and forming to obtain a ceramic material;
the pretreatment of the perlite comprises the following steps:
putting a proper amount of perlite into a vacuum heating box for puffing treatment;
the perlite expands in the vacuum heating box, and then naturally cools in the vacuum heating box;
taking out the cooled perlite, putting the cooled perlite into a chemical reaction kettle, and adding a certain amount of ammonia water solution into the chemical reaction kettle for soaking treatment;
adding the soaked perlite and the silane coupling agent into a chemical reaction kettle, injecting a small amount of absolute ethyl alcohol, and mixing and stirring at a certain temperature to obtain the pretreated perlite.
Example IV
The preparation method of the heavy high-strength sound-absorbing porous ceramic material is characterized by comprising the following steps of:
step 1: pretreating magnesium oxide;
step 2: the preparation method comprises the steps of preprocessing magnesium oxide, proportioning other raw materials according to the weight ratio, and uniformly mixing, wherein the raw materials comprise 50-80 parts of feldspar powder, 1-6 parts of foaming agent, 15-20 parts of perlite, 20-30 parts of magnesium oxide and 1-2 parts of suspending agent;
step 3: adding clear water into the mixed raw materials, and uniformly stirring to form slurry with proper viscosity and fluidity;
step 4: pouring the slurry into a mould to prepare blanks, and drying and shaping in the mould;
step 5: placing the blank into a tunnel kiln for sintering and forming to obtain a ceramic material;
the pretreatment of the magnesium oxide comprises the following steps:
adding a certain amount of magnesium oxide into a chemical reaction kettle containing absolute ethyl alcohol, and stirring for a period of time by ultrasound and magnetic force;
after the ultrasonic and magnetic stirring treatment is completed, emulsifying treatment is carried out by using high-shear emulsifying equipment;
adding an additive into the emulsified turbid liquid, and reacting for a certain time at a certain temperature;
sequentially performing ultrasonic treatment and high-speed centrifugation after the reaction is completed, and skimming supernatant;
washing the precipitate obtained after centrifugal treatment for multiple times by using absolute ethyl alcohol, washing with deionized water, drying and sieving to obtain pretreated magnesium oxide;
the emulsifying time of the emulsification treatment by using high-shear emulsifying equipment is 18-20min, and the additive is oleic acid or polyethylene glycol;
the fineness of the magnesium oxide is less than 1000 meshes, and the washing times of the precipitate obtained after the centrifugal treatment are not less than 3 times by using absolute ethyl alcohol.
Example five
The preparation method of the heavy high-strength sound-absorbing porous ceramic material comprises the following steps:
step 1: preprocessing feldspar powder, a foaming agent, perlite and magnesium oxide;
step 2: preprocessing feldspar powder, a foaming agent, perlite and magnesium oxide, mixing with other raw materials according to the weight ratio, and uniformly mixing, wherein the raw materials are 50-80 parts of feldspar powder, 1-6 parts of foaming agent, 15-20 parts of perlite, 20-30 parts of magnesium oxide and 1-2 parts of suspending agent;
step 3: adding clear water into the mixed raw materials, and uniformly stirring to form slurry with proper viscosity and fluidity;
step 4: pouring the slurry into a mould to prepare blanks, and drying and shaping in the mould;
step 5: placing the blank into a tunnel kiln for sintering and forming to obtain a ceramic material;
the feldspar powder pretreatment comprises the following steps:
weighing a certain amount of silane coupling agent to prepare alcohol-water hydrolysate;
slowly dripping acetic acid solution into the alcohol-water solution, regulating the pH value of the alcohol-water solution to 3-5, and performing hydrolysis reaction treatment;
weighing a proper amount of feldspar powder, putting the feldspar powder into an alcohol-water solution subjected to hydrolysis reaction, and putting the alcohol-water solution mixed with the feldspar powder into microwave equipment for heating treatment;
performing microwave-assisted heat treatment under the condition of condensation and reflux to obtain heat-treated feldspar powder, and sequentially performing suction filtration and drying treatment on the feldspar powder to obtain pretreated feldspar powder;
the hydrolysis reaction treatment time is 50min, the heating treatment in the microwave equipment adopts a two-step heating process for heat treatment, and the microwave irradiation time in the heating treatment process in the microwave equipment is 18min;
the foaming agent pretreatment comprises the following steps:
adding corn starch and deionized water into a chemical reaction kettle, and heating to 70 ℃;
stirring corn starch and deionized water in the process of heating the inside of the chemical reaction kettle until the corn starch is semitransparent or transparent pasty glue solution;
adding auxiliary materials into a chemical reaction kettle for crosslinking blending reaction, and obtaining a foaming agent under a certain temperature and mould pressing environment;
the auxiliary materials comprise a nucleating agent, benzoyl peroxide, a lubricant, a plasticizer, a potassium persulfate initiator, styrene and polyvinyl alcohol, and the crosslinking blending reaction is kept for 3 hours in a vacuum environment at 80 ℃;
the pretreatment of the perlite comprises the following steps:
putting a proper amount of perlite into a vacuum heating box for puffing treatment;
the perlite expands in the vacuum heating box, and then naturally cools in the vacuum heating box;
taking out the cooled perlite, putting the cooled perlite into a chemical reaction kettle, and adding a certain amount of ammonia water solution into the chemical reaction kettle for soaking treatment;
adding the soaked perlite and the silane coupling agent into a chemical reaction kettle, injecting a small amount of absolute ethyl alcohol, and mixing and stirring at a certain temperature to obtain pretreated perlite;
the pretreatment of the magnesium oxide comprises the following steps:
adding a certain amount of magnesium oxide into a chemical reaction kettle containing absolute ethyl alcohol, and stirring for a period of time by ultrasound and magnetic force;
after the ultrasonic and magnetic stirring treatment is completed, emulsifying treatment is carried out by using high-shear emulsifying equipment;
adding an additive into the emulsified turbid liquid, and reacting for a certain time at a certain temperature;
sequentially performing ultrasonic treatment and high-speed centrifugation after the reaction is completed, and skimming supernatant;
washing the precipitate obtained after centrifugal treatment for multiple times by using absolute ethyl alcohol, washing with deionized water, drying and sieving to obtain pretreated magnesium oxide;
the emulsifying time of the emulsification treatment by using high-shear emulsifying equipment is 18min, and the additive is oleic acid or polyethylene glycol;
the fineness of the magnesium oxide is less than 1000 meshes, and the washing times of the precipitate obtained after the centrifugal treatment are not less than 3 times by using absolute ethyl alcohol.
Example six
The preparation method of the heavy high-strength sound-absorbing porous ceramic material comprises the following steps:
step 1: preprocessing feldspar powder, a foaming agent, perlite and magnesium oxide;
step 2: preprocessing feldspar powder, a foaming agent, perlite and magnesium oxide, mixing with other raw materials according to the weight ratio, and uniformly mixing, wherein the raw materials are 50-80 parts of feldspar powder, 1-6 parts of foaming agent, 15-20 parts of perlite, 20-30 parts of magnesium oxide and 1-2 parts of suspending agent;
step 3: adding clear water into the mixed raw materials, and uniformly stirring to form slurry with proper viscosity and fluidity;
step 4: pouring the slurry into a mould to prepare blanks, and drying and shaping in the mould;
step 5: placing the blank into a tunnel kiln for sintering and forming to obtain a ceramic material;
the feldspar powder pretreatment comprises the following steps:
weighing a certain amount of silane coupling agent to prepare alcohol-water hydrolysate;
slowly dripping acetic acid solution into the alcohol-water solution, regulating the pH value of the alcohol-water solution to 3-5, and performing hydrolysis reaction treatment;
weighing a proper amount of feldspar powder, putting the feldspar powder into an alcohol-water solution subjected to hydrolysis reaction, and putting the alcohol-water solution mixed with the feldspar powder into microwave equipment for heating treatment;
performing microwave-assisted heat treatment under the condition of condensation and reflux to obtain heat-treated feldspar powder, and sequentially performing suction filtration and drying treatment on the feldspar powder to obtain pretreated feldspar powder;
the hydrolysis reaction treatment time is 60min, the heating treatment in the microwave equipment adopts a two-step heating process for heat treatment, and the microwave irradiation time in the heating treatment process in the microwave equipment is 20min;
the foaming agent pretreatment comprises the following steps:
adding corn starch and deionized water into a chemical reaction kettle, and heating to 80 ℃;
stirring corn starch and deionized water in the process of heating the inside of the chemical reaction kettle until the corn starch is semitransparent or transparent pasty glue solution;
adding auxiliary materials into a chemical reaction kettle for crosslinking blending reaction, and obtaining a foaming agent under a certain temperature and mould pressing environment;
the auxiliary materials comprise a nucleating agent, benzoyl peroxide, a lubricant, a plasticizer, a potassium persulfate initiator, styrene and polyvinyl alcohol, and the crosslinking blending reaction is kept for 3.4 hours in a vacuum environment at 86 ℃;
the pretreatment of the perlite comprises the following steps:
putting a proper amount of perlite into a vacuum heating box for puffing treatment;
the perlite expands in the vacuum heating box, and then naturally cools in the vacuum heating box;
taking out the cooled perlite, putting the cooled perlite into a chemical reaction kettle, and adding a certain amount of ammonia water solution into the chemical reaction kettle for soaking treatment;
adding the soaked perlite and the silane coupling agent into a chemical reaction kettle, injecting a small amount of absolute ethyl alcohol, and mixing and stirring at a certain temperature to obtain pretreated perlite;
the pretreatment of the magnesium oxide comprises the following steps:
adding a certain amount of magnesium oxide into a chemical reaction kettle containing absolute ethyl alcohol, and stirring for a period of time by ultrasound and magnetic force;
after the ultrasonic and magnetic stirring treatment is completed, emulsifying treatment is carried out by using high-shear emulsifying equipment;
adding an additive into the emulsified turbid liquid, and reacting for a certain time at a certain temperature;
sequentially performing ultrasonic treatment and high-speed centrifugation after the reaction is completed, and skimming supernatant;
washing the precipitate obtained after centrifugal treatment for multiple times by using absolute ethyl alcohol, washing with deionized water, drying and sieving to obtain pretreated magnesium oxide;
the emulsifying time of the emulsification treatment by using high-shear emulsifying equipment is 20min, and the additive is oleic acid or polyethylene glycol;
the fineness of the magnesium oxide is less than 1000 meshes, and the washing times of the precipitate obtained after the centrifugal treatment are not less than 3 times by using absolute ethyl alcohol.
Example seven
The preparation method of the heavy high-strength sound-absorbing porous ceramic material comprises the following steps:
step 1: preprocessing feldspar powder, a foaming agent, perlite and magnesium oxide;
step 2: preprocessing feldspar powder, a foaming agent, perlite and magnesium oxide, mixing with other raw materials according to the weight ratio, and uniformly mixing, wherein the raw materials are 50-80 parts of feldspar powder, 1-6 parts of foaming agent, 15-20 parts of perlite, 20-30 parts of magnesium oxide and 1-2 parts of suspending agent;
step 3: adding clear water into the mixed raw materials, and uniformly stirring to form slurry with proper viscosity and fluidity;
step 4: pouring the slurry into a mould to prepare blanks, and drying and shaping in the mould;
step 5: placing the blank into a tunnel kiln for sintering and forming to obtain a ceramic material;
the feldspar powder pretreatment comprises the following steps:
weighing a certain amount of silane coupling agent to prepare alcohol-water hydrolysate;
slowly dripping acetic acid solution into the alcohol-water solution, regulating the pH value of the alcohol-water solution to 3-5, and performing hydrolysis reaction treatment;
weighing a proper amount of feldspar powder, putting the feldspar powder into an alcohol-water solution subjected to hydrolysis reaction, and putting the alcohol-water solution mixed with the feldspar powder into microwave equipment for heating treatment;
performing microwave-assisted heat treatment under the condition of condensation and reflux to obtain heat-treated feldspar powder, and sequentially performing suction filtration and drying treatment on the feldspar powder to obtain pretreated feldspar powder;
the hydrolysis reaction treatment time is 55min, the heating treatment in the microwave equipment adopts a two-step heating process for heat treatment, and the microwave irradiation time in the heating treatment process in the microwave equipment is 19min;
the foaming agent pretreatment comprises the following steps:
adding corn starch and deionized water into a chemical reaction kettle, and heating to 75 ℃;
stirring corn starch and deionized water in the process of heating the inside of the chemical reaction kettle until the corn starch is semitransparent or transparent pasty glue solution;
adding auxiliary materials into a chemical reaction kettle for crosslinking blending reaction, and obtaining a foaming agent under a certain temperature and mould pressing environment;
the auxiliary materials comprise a nucleating agent, benzoyl peroxide, a lubricant, a plasticizer, a potassium persulfate initiator, styrene and polyvinyl alcohol, and the crosslinking blending reaction is kept for 3.2 hours in a vacuum environment at 83 ℃;
the pretreatment of the perlite comprises the following steps:
putting a proper amount of perlite into a vacuum heating box for puffing treatment;
the perlite expands in the vacuum heating box, and then naturally cools in the vacuum heating box;
taking out the cooled perlite, putting the cooled perlite into a chemical reaction kettle, and adding a certain amount of ammonia water solution into the chemical reaction kettle for soaking treatment;
adding the soaked perlite and the silane coupling agent into a chemical reaction kettle, injecting a small amount of absolute ethyl alcohol, and mixing and stirring at a certain temperature to obtain pretreated perlite;
the pretreatment of the magnesium oxide comprises the following steps:
adding a certain amount of magnesium oxide into a chemical reaction kettle containing absolute ethyl alcohol, and stirring for a period of time by ultrasound and magnetic force;
after the ultrasonic and magnetic stirring treatment is completed, emulsifying treatment is carried out by using high-shear emulsifying equipment;
adding an additive into the emulsified turbid liquid, and reacting for a certain time at a certain temperature;
sequentially performing ultrasonic treatment and high-speed centrifugation after the reaction is completed, and skimming supernatant;
washing the precipitate obtained after centrifugal treatment for multiple times by using absolute ethyl alcohol, washing with deionized water, drying and sieving to obtain pretreated magnesium oxide;
the emulsifying time of the emulsification treatment by using high-shear emulsifying equipment is 19min, and the additive is oleic acid or polyethylene glycol;
the fineness of the magnesium oxide is less than 1000 meshes, and the washing times of the precipitate obtained after the centrifugal treatment are not less than 3 times by using absolute ethyl alcohol.
Example eight
The preparation method of the heavy high-strength sound-absorbing porous ceramic material comprises the following steps:
step 1: preprocessing feldspar powder, a foaming agent, perlite and magnesium oxide;
step 2: preprocessing feldspar powder, a foaming agent, perlite and magnesium oxide, mixing with other raw materials according to the weight ratio, and uniformly mixing, wherein the raw materials are 50-80 parts of feldspar powder, 1-6 parts of foaming agent, 15-20 parts of perlite, 20-30 parts of magnesium oxide and 1-2 parts of suspending agent;
step 3: adding clear water into the mixed raw materials, and uniformly stirring to form slurry with proper viscosity and fluidity;
step 4: pouring the slurry into a mould to prepare blanks, and drying and shaping in the mould;
step 5: placing the blank into a tunnel kiln for sintering and forming to obtain a ceramic material;
the feldspar powder pretreatment comprises the following steps:
weighing a certain amount of silane coupling agent to prepare alcohol-water hydrolysate;
slowly dripping acetic acid solution into the alcohol-water solution, regulating the pH value of the alcohol-water solution to 3-5, and performing hydrolysis reaction treatment;
weighing a proper amount of feldspar powder, putting the feldspar powder into an alcohol-water solution subjected to hydrolysis reaction, and putting the alcohol-water solution mixed with the feldspar powder into microwave equipment for heating treatment;
performing microwave-assisted heat treatment under the condition of condensation and reflux to obtain heat-treated feldspar powder, and sequentially performing suction filtration and drying treatment on the feldspar powder to obtain pretreated feldspar powder;
the hydrolysis reaction treatment time is 40min, the heating treatment in the microwave equipment adopts a two-step heating process for heat treatment, and the microwave irradiation time in the heating treatment process in the microwave equipment is 16min;
the foaming agent pretreatment comprises the following steps:
adding corn starch and deionized water into a chemical reaction kettle, and heating to 60 ℃;
stirring corn starch and deionized water in the process of heating the inside of the chemical reaction kettle until the corn starch is semitransparent or transparent pasty glue solution;
adding auxiliary materials into a chemical reaction kettle for crosslinking blending reaction, and obtaining a foaming agent under a certain temperature and mould pressing environment;
the auxiliary materials comprise a nucleating agent, benzoyl peroxide, a lubricant, a plasticizer, a potassium persulfate initiator, styrene and polyvinyl alcohol, and the crosslinking blending reaction is kept for 2 hours in a vacuum environment at 70 ℃;
the pretreatment of the perlite comprises the following steps:
putting a proper amount of perlite into a vacuum heating box for puffing treatment;
the perlite expands in the vacuum heating box, and then naturally cools in the vacuum heating box;
taking out the cooled perlite, putting the cooled perlite into a chemical reaction kettle, and adding a certain amount of ammonia water solution into the chemical reaction kettle for soaking treatment;
adding the soaked perlite and the silane coupling agent into a chemical reaction kettle, injecting a small amount of absolute ethyl alcohol, and mixing and stirring at a certain temperature to obtain pretreated perlite;
the pretreatment of the magnesium oxide comprises the following steps:
adding a certain amount of magnesium oxide into a chemical reaction kettle containing absolute ethyl alcohol, and stirring for a period of time by ultrasound and magnetic force;
after the ultrasonic and magnetic stirring treatment is completed, emulsifying treatment is carried out by using high-shear emulsifying equipment;
adding an additive into the emulsified turbid liquid, and reacting for a certain time at a certain temperature;
sequentially performing ultrasonic treatment and high-speed centrifugation after the reaction is completed, and skimming supernatant;
washing the precipitate obtained after centrifugal treatment for multiple times by using absolute ethyl alcohol, washing with deionized water, drying and sieving to obtain pretreated magnesium oxide;
the emulsification time of the emulsification treatment by using high-shear emulsification equipment is 16min, and the additive is oleic acid or polyethylene glycol;
the fineness of the magnesium oxide is less than 1000 meshes, and the washing times of the precipitate obtained after the centrifugal treatment are not less than 3 times by using absolute ethyl alcohol.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The preparation method of the heavy high-strength sound-absorbing porous ceramic material is characterized by comprising the following steps of:
step 1: preprocessing feldspar powder, a foaming agent, perlite and magnesium oxide;
step 2: preprocessing feldspar powder, a foaming agent, perlite and magnesium oxide, mixing with other raw materials according to the weight ratio, and uniformly mixing, wherein the raw materials are 50-80 parts of feldspar powder, 1-6 parts of foaming agent, 15-20 parts of perlite, 20-30 parts of magnesium oxide and 1-2 parts of suspending agent;
step 3: adding clear water into the mixed raw materials, and uniformly stirring to form slurry with proper viscosity and fluidity;
step 4: pouring the slurry into a mould to prepare blanks, and drying and shaping in the mould;
step 5: and placing the blank into a tunnel kiln for sintering and forming to obtain the ceramic material.
2. The method for preparing a heavy high-strength sound-absorbing porous ceramic material according to claim 1, wherein the feldspar powder pretreatment comprises the following steps:
weighing a certain amount of silane coupling agent to prepare alcohol-water hydrolysate;
slowly dripping acetic acid solution into the alcohol-water solution, regulating the pH value of the alcohol-water solution to 3-5, and performing hydrolysis reaction treatment;
weighing a proper amount of feldspar powder, putting the feldspar powder into an alcohol-water solution subjected to hydrolysis reaction, and putting the alcohol-water solution mixed with the feldspar powder into microwave equipment for heating treatment;
and (3) carrying out microwave-assisted heat treatment under the condition of condensation and reflux to obtain the feldspar powder after heat treatment, and finally carrying out suction filtration and drying treatment on the feldspar powder in sequence to obtain the pretreated feldspar powder.
3. The method for preparing the heavy high-strength sound-absorbing porous ceramic material according to claim 2, wherein the hydrolysis reaction treatment time is 50-60min, the heating treatment in the microwave equipment adopts a two-step heating process for heat treatment, and the microwave irradiation time in the heating treatment process in the microwave equipment is 18-20min.
4. The method for preparing a heavy high-strength sound-absorbing porous ceramic material according to claim 1, wherein the foaming agent pretreatment comprises the following steps:
adding corn starch and deionized water into a chemical reaction kettle, and heating to 70-80 ℃;
stirring corn starch and deionized water in the process of heating the inside of the chemical reaction kettle until the corn starch is semitransparent or transparent pasty glue solution;
adding auxiliary materials into a chemical reaction kettle for cross-linking blending reaction, and obtaining the foaming agent under the environment of a certain temperature and mould pressing.
5. The method for preparing the heavy high-strength sound-absorbing porous ceramic material according to claim 4, wherein the auxiliary materials comprise a nucleating agent, benzoyl peroxide, a lubricant, a plasticizer, a potassium persulfate initiator, styrene and polyvinyl alcohol, and the crosslinking blending reaction is kept for 3-3.4 hours in a vacuum environment at 80-86 ℃.
6. The method for preparing a heavy high-strength sound-absorbing porous ceramic material according to claim 1, wherein the pretreatment of perlite comprises the following steps:
putting a proper amount of perlite into a vacuum heating box for puffing treatment;
the perlite expands in the vacuum heating box, and then naturally cools in the vacuum heating box;
taking out the cooled perlite, putting the cooled perlite into a chemical reaction kettle, and adding a certain amount of ammonia water solution into the chemical reaction kettle for soaking treatment;
adding the soaked perlite and the silane coupling agent into a chemical reaction kettle, injecting a small amount of absolute ethyl alcohol, and mixing and stirring at a certain temperature to obtain the pretreated perlite.
7. The method for preparing a heavy high-strength sound-absorbing porous ceramic material according to claim 1, wherein the pretreatment of the magnesium oxide comprises the following steps:
adding a certain amount of magnesium oxide into a chemical reaction kettle containing absolute ethyl alcohol, and stirring for a period of time by ultrasound and magnetic force;
after the ultrasonic and magnetic stirring treatment is completed, emulsifying treatment is carried out by using high-shear emulsifying equipment;
adding an additive into the emulsified turbid liquid, and reacting for a certain time at a certain temperature;
sequentially performing ultrasonic treatment and high-speed centrifugation after the reaction is completed, and skimming supernatant;
washing the precipitate obtained after centrifugal treatment for multiple times by using absolute ethyl alcohol, and finally washing the precipitate by using deionized water, and drying and sieving the precipitate after the washing to obtain pretreated magnesium oxide.
8. The method for preparing a heavy high-strength sound-absorbing porous ceramic material according to claim 7, wherein the emulsifying time of the emulsifying treatment by using high-shear emulsifying equipment is 18-20min, and the additive is oleic acid or polyethylene glycol.
9. The method for producing a heavy high-strength sound-absorbing porous ceramic material according to claim 8, wherein the fineness of the magnesium oxide is less than 1000 mesh, and the number of washing of the precipitate obtained after the centrifugal treatment with absolute ethyl alcohol is not less than 3.
10. A heavy high-strength sound-absorbing porous ceramic material produced by the production method according to any one of claims 1 to 9.
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