CN113087501A - High-strength quartz ceramic roller and preparation process thereof - Google Patents
High-strength quartz ceramic roller and preparation process thereof Download PDFInfo
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- CN113087501A CN113087501A CN202110243668.9A CN202110243668A CN113087501A CN 113087501 A CN113087501 A CN 113087501A CN 202110243668 A CN202110243668 A CN 202110243668A CN 113087501 A CN113087501 A CN 113087501A
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 239000000919 ceramic Substances 0.000 title claims abstract description 56
- 239000010453 quartz Substances 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title abstract description 18
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000005245 sintering Methods 0.000 claims abstract description 29
- 239000005350 fused silica glass Substances 0.000 claims abstract description 23
- 239000000178 monomer Substances 0.000 claims abstract description 22
- 229920000620 organic polymer Polymers 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 239000003054 catalyst Substances 0.000 claims abstract description 8
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 8
- 239000003999 initiator Substances 0.000 claims abstract description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 59
- 238000001035 drying Methods 0.000 claims description 35
- 239000000725 suspension Substances 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 18
- 239000011362 coarse particle Substances 0.000 claims description 17
- 239000010419 fine particle Substances 0.000 claims description 16
- 238000001354 calcination Methods 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 10
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims description 10
- YEECOJZAMZEUBB-UHFFFAOYSA-N 2,2,3,3,6,6,7,7-octamethyloctane Chemical compound CC(C)(C)C(C)(C)CCC(C)(C)C(C)(C)C YEECOJZAMZEUBB-UHFFFAOYSA-N 0.000 claims description 8
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 claims description 8
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 5
- 229910052810 boron oxide Inorganic materials 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 5
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000000379 polymerizing effect Effects 0.000 claims description 5
- 238000004537 pulping Methods 0.000 claims description 5
- 239000007790 solid phase Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 4
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 claims description 4
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 claims description 2
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
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Abstract
The invention provides a high-strength quartz ceramic roller and a preparation process thereof, belonging to the technical field of preparation processes of quartz ceramic rollers, and the high-strength quartz ceramic roller consists of the following components in parts by weight: 90-100 parts of fused quartz, 1-5 parts of organic polymer monomer, 1-3 parts of cross-linking agent, 0.01-0.03 part of initiator, 1-3 parts of catalyst, 1-5 parts of sintering agent and 10-15 parts of ethylene glycol. The high-strength quartz ceramic roller has the advantages of uniform internal structure distribution, good compactness and high strength; the preparation process of the high-strength quartz ceramic roller is simple in steps, can effectively improve the strength of the quartz ceramic roller, and is suitable for industrial large-scale popularization.
Description
Technical Field
The invention belongs to the technical field of quartz ceramic roller preparation processes, and particularly relates to a high-strength quartz ceramic roller and a preparation process thereof.
Background
The quartz ceramic roller is a key part in a glass horizontal tempering furnace and is mainly used for bearing and conveying glass in the glass horizontal tempering furnace. The quartz ceramic has a series of excellent properties such as good thermal stability, small thermal expansion coefficient, low dielectric constant, good acid and alkali corrosion resistance, good electrical insulation, low cost and the like. Moreover, the strength of the quartz ceramic is greatly increased with the temperature rise below 1100 ℃, and the strength of the quartz ceramic can be increased by 33% from room temperature to 1100 ℃, so that the quartz ceramic is widely applied in various aspects.
In the prior art, a common forming process for quartz ceramics is slip casting, which has some defects, the obtained blank has uneven internal structure distribution, poor performance reliability and poor internal compactness, so that the blank has poor strength, and for some quartz ceramic products with special requirements, products and processes in the prior art cannot meet the requirements.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the high-strength quartz ceramic roller and the preparation process thereof, and the high-strength quartz ceramic roller has the advantages of uniform internal structure distribution, good compactness and high strength; the preparation process of the high-strength quartz ceramic roller is simple in steps, can effectively improve the strength of the quartz ceramic roller, and is suitable for industrial large-scale popularization.
In order to achieve the purpose, the invention is realized by the following technical scheme: a high-strength quartz ceramic roller comprises the following components in parts by weight: 90-100 parts of fused quartz, 1-5 parts of organic polymer monomer, 1-3 parts of cross-linking agent, 0.01-0.03 part of initiator, 1-3 parts of catalyst, 1-5 parts of sintering agent and 10-15 parts of ethylene glycol. The organic polymer monomer can be polymerized into reticular gel under the action of a cross-linking agent, an initiator and a catalyst, and is bonded and solidified with the fused quartz, so that the strength of the quartz ceramic can be enhanced; the sintering agent can improve the density of the quartz ceramic in the firing process, thereby improving the strength of the quartz ceramic roller.
Further, the content of silicon dioxide in the fused quartz is more than or equal to 99.5 percent.
Further, the fused quartz is formed by mixing coarse particles and fine particles, the mass ratio of the coarse particles to the fine particles is 1-3:1-2, the particle size of the coarse particles is 0.5-1 mu m, and the particle size of the fine particles is 50-100 nm. The coarse-particle fused quartz is not easy to crystallize at high temperature, so that the internal compactness is poor, and the fine particles can fill the gaps of the coarse particles, so that the internal structure of the whole quartz ceramic is uniformly distributed and has good compactness, thereby having higher strength.
Furthermore, the organic polymer monomer adopts a mixture of vinyl trimethoxy silane and 3-methacryloxypropyl trimethoxy silane in a mass ratio of 1: 1-2.
Further, the cross-linking agent adopts 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide.
Further, the initiator is cumene hydroperoxide or tert-butyl hydroperoxide.
Further, the catalyst adopts triethanolamine or ammonium sulfite.
Further, the sintering agent is composed of the following components in parts by weight: 60-80 parts of boron oxide, 10-15 parts of phosphorus pentoxide and 15-25 parts of silicon dioxide.
The invention also provides a preparation process of the high-strength quartz ceramic roller, and the preparation process of the high-strength quartz ceramic roller comprises the following steps:
s1: pulping: dissolving organic polymer monomers and a cross-linking agent in a mass ratio into ethylene glycol in a mass ratio to prepare a solution, then adding fused quartz and a sintering agent in a mass ratio into the solution, and grinding the mixed solution into a slurry suspension by adopting a planetary ball mill, wherein the solid phase content of the slurry suspension is more than 50 vol%, and the viscosity is less than 1 pa.s;
s2: gel casting: adding an initiator and a catalyst in a mass ratio into the suspension obtained in the step 1, uniformly stirring, injecting into a forming mold, heating the mold, keeping the temperature at 50-65 ℃, polymerizing the organic polymer monomer, solidifying the slurry suspension to form gel, cooling to room temperature after the reaction is finished, and demolding;
s3: and (3) drying: carrying out low-temperature drying on the product obtained in the step 2 in an oven, wherein the low-temperature drying temperature is set to be 15-20 ℃, the air humidity is set to be 96% RH, and the drying time is set to be 2-3 h; then high-temperature drying is carried out, the high-temperature drying temperature is set to be 100-120 ℃, the air humidity is set to be 25-35% RH, and the drying time is set to be 4.5-5.5 h;
s4: and (3) sintering: placing the dried blank body into a calcining furnace for calcining, wherein the temperature in the calcining furnace is slowly raised to 350 ℃ at a temperature-raising rate of 2 ℃/min, and then the temperature is raised to 20-30 DEG C
And (3) rapidly heating at a heating rate of/min, sintering at the temperature for 1.5-2.5h when the temperature is increased to 1100-1200 ℃, rapidly cooling at a cooling rate of 45-50 ℃/min, cooling to room temperature, and grinding to obtain the required quartz ceramic roller finished product.
Has the advantages that: compared with the prior art, the invention has the following advantages: according to the high-strength quartz ceramic roller and the preparation process thereof, the internal structure of the high-strength quartz ceramic roller is uniformly distributed, the compactness is good, and the strength is high; the preparation process of the high-strength quartz ceramic roller is simple in steps, can effectively improve the strength of the quartz ceramic roller, and is suitable for industrial large-scale popularization.
Drawings
FIG. 1 is a flow chart of a manufacturing process of a high-strength quartz ceramic roller according to the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and specific examples.
Example 1
A high-strength quartz ceramic roller comprises the following components in parts by weight: 90 parts of fused quartz, 1 part of organic polymer monomer, 1 part of 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide, 0.01 part of cumene hydroperoxide, 1 part of triethanolamine, 1 part of sintering agent and 10 parts of ethylene glycol; the content of silicon dioxide in the fused quartz is more than or equal to 99.5%, the fused quartz is formed by mixing coarse particles and fine particles, the mass ratio of the coarse particles to the fine particles is 1:1, the particle size of the coarse particles is 0.5 mu m, and the particle size of the fine particles is 50 nm; the organic polymer monomer adopts a mixture of vinyl trimethoxy silane and 3-methacryloxypropyl trimethoxy silane in a mass ratio of 1: 1; the sintering agent comprises the following components in parts by weight: 60 parts of boron oxide, 10 parts of phosphorus pentoxide and 15 parts of silicon dioxide.
The preparation process of the high-strength quartz ceramic roller comprises the following steps:
s1: pulping: dissolving an organic polymer monomer and 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide in mass ratio in ethylene glycol to prepare a solution, adding fused quartz and a sintering agent in mass ratio into the solution, and grinding the mixed solution into a slurry suspension by adopting a planetary ball mill, wherein the solid phase content of the slurry suspension is 51 vol%, and the viscosity is 0.95 pa.s;
s2: gel casting: adding cumene hydroperoxide and triethanolamine in a mass ratio into the suspension obtained in the step 1, uniformly stirring, injecting into a forming mold, heating the mold, keeping the temperature at 50 ℃, polymerizing organic polymer monomers, solidifying the slurry suspension to form gel, cooling to room temperature after the reaction is finished, and demolding;
s3: and (3) drying: carrying out low-temperature drying on the product obtained in the step 2 in an oven, wherein the low-temperature drying temperature is set to be 15 ℃, the air humidity is set to be 96% RH, and the drying time is set to be 2 h; then high-temperature drying is carried out, the high-temperature drying temperature is set as 100 ℃, the air humidity is set as 25% RH, and the drying time is set as 4.5 h;
s4: and (3) sintering: and placing the dried blank body into a calcining furnace for calcining, slowly heating to 350 ℃ in the calcining furnace at a heating rate of 2 ℃/min, then quickly heating to 1100 ℃, sintering for 1.5h at the temperature, quickly cooling at a cooling rate of 45 ℃/min, cooling to room temperature, and polishing to obtain the required quartz ceramic roller finished product.
Example 2
A high-strength quartz ceramic roller comprises the following components in parts by weight: 100 parts of fused quartz, 5 parts of organic polymer monomer, 3 parts of 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide, 0.03 part of cumene hydroperoxide, 3 parts of triethanolamine, 5 parts of sintering agent and 15 parts of ethylene glycol; the content of silicon dioxide in the fused quartz is more than or equal to 99.5%, the fused quartz is formed by mixing coarse particles and fine particles, the mass ratio of the coarse particles to the fine particles is 3:2, the particle size of the coarse particles is 1 mu m, and the particle size of the fine particles is 100 nm; the organic polymer monomer adopts a mixture of vinyl trimethoxy silane and 3-methacryloxypropyl trimethoxy silane in a mass ratio of 1: 2; the sintering agent comprises the following components in parts by weight: 80 parts of boron oxide, 15 parts of phosphorus pentoxide and 25 parts of silicon dioxide.
The preparation process of the high-strength quartz ceramic roller comprises the following steps:
s1: pulping: dissolving an organic polymer monomer and 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide in mass ratio in ethylene glycol to prepare a solution, adding fused quartz and a sintering agent in mass ratio into the solution, and grinding the mixed solution into a slurry suspension by adopting a planetary ball mill, wherein the solid phase content of the slurry suspension is 51 vol%, and the viscosity is 0.97 pa.s;
s2: gel casting: adding cumene hydroperoxide and triethanolamine in a mass ratio into the suspension obtained in the step 1, uniformly stirring, injecting into a forming mold, heating the mold, keeping the temperature at 50-65 ℃, polymerizing organic polymer monomers, solidifying the slurry suspension to form gel, and cooling to room temperature after the reaction is finished for demolding;
s3: and (3) drying: carrying out low-temperature drying on the product obtained in the step 2 in an oven, wherein the low-temperature drying temperature is set to be 20 ℃, the air humidity is set to be 96% RH, and the drying time is set to be 3 h; then high-temperature drying is carried out, the high-temperature drying temperature is set to be 120 ℃, the air humidity is set to be 35% RH, and the drying time is set to be 5.5 h;
s4: and (3) sintering: and placing the dried blank body into a calcining furnace for calcining, slowly heating to 350 ℃ in the calcining furnace at a heating rate of 2 ℃/min, then quickly heating to 1200 ℃ at a heating rate of 30 ℃/min, sintering for 2.5h at the temperature, quickly cooling at a cooling rate of 50 ℃/min, cooling to room temperature, and polishing to obtain the required quartz ceramic roller finished product.
Example 3
A high-strength quartz ceramic roller comprises the following components in parts by weight: 95 parts of fused quartz, 3 parts of organic polymer monomer, 2 parts of 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide, 0.02 part of cumene hydroperoxide, 2 parts of triethanolamine, 3 parts of sintering agent and 12 parts of ethylene glycol; the content of silicon dioxide in the fused quartz is more than or equal to 99.5%, the fused quartz is formed by mixing coarse particles and fine particles, the mass ratio of the coarse particles to the fine particles is 2:1.5, the particle size of the coarse particles is 0.75 mu m, and the particle size of the fine particles is 75 nm; the organic polymer monomer adopts a mixture of vinyl trimethoxy silane and 3-methacryloxypropyl trimethoxy silane in a mass ratio of 1: 1.5; the sintering agent comprises the following components in parts by weight: 70 parts of boron oxide, 12 parts of phosphorus pentoxide and 20 parts of silicon dioxide.
The preparation process of the high-strength quartz ceramic roller comprises the following steps:
s1: pulping: dissolving an organic polymer monomer and 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide in mass ratio in ethylene glycol to prepare a solution, adding fused quartz and a sintering agent in mass ratio into the solution, and grinding the mixed solution into a slurry suspension by adopting a planetary ball mill, wherein the solid phase content of the slurry suspension is 52 vol%, and the viscosity is 0.98 pa.s;
s2: gel casting: adding cumene hydroperoxide and triethanolamine in a mass ratio into the suspension obtained in the step 1, uniformly stirring, injecting into a forming mold, heating the mold, keeping the temperature at 57 ℃, polymerizing organic polymer monomers, solidifying the slurry suspension to form gel, cooling to room temperature after the reaction is finished, and demolding;
s3: and (3) drying: carrying out low-temperature drying on the product obtained in the step 2 in an oven, wherein the low-temperature drying temperature is set to be 17 ℃, the air humidity is set to be 96% RH, and the drying time is set to be 2.5 h; then, high-temperature drying is carried out, the high-temperature drying temperature is set to be 110 ℃, the air humidity is set to be 30% RH, and the drying time is set to be 5 h;
s4: and (3) sintering: and placing the dried blank body into a calcining furnace for calcining, slowly heating to 350 ℃ in the calcining furnace at a heating rate of 2 ℃/min, then quickly heating to 1150 ℃, sintering for 2 hours at the temperature, quickly cooling at a cooling rate of 47 ℃/min, cooling to room temperature, and polishing to obtain the finished product of the required quartz ceramic roller.
Comparative example 1
The comparative example is that of example 3, wherein the high-strength quartz ceramic roller does not contain a sintering agent, and the other components and contents are the same as those of example 3, and the preparation process parameters are also the same.
Performance testing
The products obtained in examples 1 to 3 and comparative example 1 were subjected to the following performance tests, wherein the porosity and bulk density of the material were determined according to GB2977-82, the compressive strength was determined according to GB/T474099, and the flexural strength was determined according to GB/T3001-2008, and the specific test results are shown in Table 1:
table 1 results of performance testing
The test results show that the quartz ceramic roller prepared by the preparation process has higher strength, small volume density, small apparent porosity, uniform internal distribution and good compactness, and the sintering agent can effectively improve the strength of the quartz ceramic roller and the internal compactness.
The foregoing is directed to embodiments of the present invention and, more particularly, to a method and apparatus for controlling a power converter in a power converter, including a power converter, a power converter.
Claims (9)
1. A high-strength quartz ceramic roller is characterized in that: the composition comprises the following components in parts by weight: 90-100 parts of fused quartz, 1-5 parts of organic polymer monomer, 1-3 parts of cross-linking agent, 0.01-0.03 part of initiator, 1-3 parts of catalyst, 1-5 parts of sintering agent and 10-15 parts of ethylene glycol.
2. The high strength quartz ceramic roll of claim 1, wherein: the content of silicon dioxide in the fused quartz is more than or equal to 99.5 percent.
3. The high strength quartz ceramic roll of claim 2, wherein: the fused quartz is formed by mixing coarse particles and fine particles, the mass ratio of the coarse particles to the fine particles is 1-3:1-2, the particle size of the coarse particles is 0.5-1 mu m, and the particle size of the fine particles is 50-100 nm.
4. The high strength quartz ceramic roll of claim 1, wherein: the organic polymer monomer adopts a mixture of vinyl trimethoxy silane and 3-methacryloxypropyl trimethoxy silane in a mass ratio of 1: 1-2.
5. The high strength quartz ceramic roll of claim 1, wherein: the cross-linking agent adopts 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide.
6. The high strength quartz ceramic roll of claim 1, wherein: the initiator adopts cumene hydroperoxide or tert-butyl hydroperoxide.
7. The high strength quartz ceramic roll of claim 1, wherein: the catalyst adopts triethanolamine or ammonium sulfite.
8. The high strength quartz ceramic roll of claim 1, wherein: the sintering agent comprises the following components in parts by weight: 60-80 parts of boron oxide, 10-15 parts of phosphorus pentoxide and 15-25 parts of silicon dioxide.
9. A process for producing a high-strength quartz ceramic roll according to any one of claims 1 to 8, characterized in that: the method comprises the following steps:
s1: pulping: dissolving organic polymer monomers and a cross-linking agent in a mass ratio into ethylene glycol in a mass ratio to prepare a solution, then adding fused quartz and a sintering agent in a mass ratio into the solution, and grinding the mixed solution into a slurry suspension by adopting a planetary ball mill, wherein the solid phase content of the slurry suspension is more than 50 vol%, and the viscosity is less than 1 pa.s;
s2: gel casting: adding an initiator and a catalyst in a mass ratio into the suspension obtained in the step 1, uniformly stirring, injecting into a forming mold, heating the mold, keeping the temperature at 50-65 ℃, polymerizing the organic polymer monomer, solidifying the slurry suspension to form gel, cooling to room temperature after the reaction is finished, and demolding;
s3: and (3) drying: carrying out low-temperature drying on the product obtained in the step 2 in an oven, wherein the low-temperature drying temperature is set to be 15-20 ℃, the air humidity is set to be 96% RH, and the drying time is set to be 2-3 h; then high-temperature drying is carried out, the high-temperature drying temperature is set to be 100-120 ℃, the air humidity is set to be 25-35% RH, and the drying time is set to be 4.5-5.5 h;
s4: and (3) sintering: and placing the dried blank body into a calcining furnace for calcining, slowly raising the temperature in the calcining furnace to 350 ℃ at a heating rate of 2 ℃/min, then rapidly raising the temperature at a heating rate of 20-30 ℃/min, sintering at the temperature for 1.5-2.5h when the temperature is raised to 1100 ℃ and 1200 ℃, rapidly lowering the temperature at a cooling rate of 45-50 ℃/min, lowering the temperature to room temperature, and polishing to obtain the finished product of the quartz ceramic roller.
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