CN107176838A - A kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity - Google Patents

A kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity Download PDF

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Publication number
CN107176838A
CN107176838A CN201710466904.7A CN201710466904A CN107176838A CN 107176838 A CN107176838 A CN 107176838A CN 201710466904 A CN201710466904 A CN 201710466904A CN 107176838 A CN107176838 A CN 107176838A
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silicon carbide
thermal conductivity
carbide ceramics
preparation
graphene
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舒小山
章建武
宫平
汤兴友
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ANHUI HANSHAN PORCELAIN Co Ltd
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ANHUI HANSHAN PORCELAIN Co Ltd
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    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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Abstract

The invention discloses a kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity, scientific and reasonable composition proportion will be passed through, by silicon carbide micro-powder, boron carbide micro powder, liquid phenolic resin, graphene composition compounding, silicon carbide ceramics pot has been made by techniques such as ball milling, granulation, isostatic pressing, pressureless sinterings, the green density being made is big, and uniformity is good, intensity is big, is sinterable by simple drying, pressureless sintering is used simultaneously, energy consumption is reduced；The inventive method is simply easy to Industry Control, and cost of material is simple and easy to get, can manufacture nontoxic, can directly contact the ceramic pan of food, with higher thermal conductivity, accelerates the brew time of food, so as to reach the effect of energy-conservation.

Description

A kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity
Technical field
The present invention relates to the silicon carbide ceramics pot of domestic ceramics technical field, more particularly to a kind of graphene enhancing thermal conductivity Preparation method.
Background technology
Domestic ceramics refers to life porcelain essential in people's daily life as its name suggests.The generation of domestic ceramics can To say being that people are in the most contact in daily life, are also most familiar of porcelain because people produce to the demand of daily life Device, such as tableware, tea set, coffee tool, drinking utensils, meal tool.The glaze light of household china, is easily scrubbed；Chemical property is stable, has The ability that certain acid and alkali resistance, salt and carbon in atmosphere acid gas corrodes, is difficult to chemically react with these materials, non-corrosive is old Change, it is durable in use；Stomata is few, and water absorption rate is very low, stores food with domestic porcelain, after tight sealing, can prevent food reclaimed water Divide volatilization, infiltration and the infringement of extraneous bacterium；Better heat stability, heat transfer is slow, and for containing boiling water or boiling hot food, end is taken Shi Butai scalds one's hand.However, this slow advantage of heat conduction but limits the expansion of domestic ceramics.
Carborundum has that density is low, hardness is high, resistance to high old woman, anti-oxidant, corrosion-resistant, wear-resistant, energy gap are big, breakdown potential The excellent physical and chemical performance such as pressure is high, electronics saturation migration velocity is high, thermal conductivity is high and chemical stability is good, in oil, smelting The numerous areas such as gold, chemical industry, machinery, aerospace are widely used, and the heat conduction of high-quality is prepared using carborundum Ceramics, energy-saving high heat conduction pan is prepared with this ceramics, has opened up application of the thyrite in domestic ceramics, Improve the quality of domestic ceramics.
The content of the invention
The object of the invention is exactly that there is provided the carborundum that a kind of graphene strengthens thermal conductivity in order to make up the defect of prior art The preparation method of ceramic pan.
The present invention is achieved by the following technical solutions：
A kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity, including step in detail below：
（1）Silicon carbide micro-powder, boron carbide micro powder, liquid phenolic resin, graphene are added to ball grinder according to certain ratio In, using absolute ethyl alcohol as solvent, silicon carbide ceramics ball is as ball-milling medium, quick ball milling 15-20 minutes in ball mill, respectively into Divide well mixed；
（2）The silicon carbide ceramics slurry after ball milling is put into vacuum drying chamber, 50-60 DEG C of drying, then in grinding body Zhong Subcommittee-to It is broken, the granulation of 40-50 mesh standard sieves is crossed, ceramic particle is obtained.
（3）Above-mentioned ceramic particle is added in mould, unidirectionally pressurizeed under 20-22MPa, pressurize 60-90 seconds obtains precompressed Ceramic pan green compact, then vacuumize sealing by the pack of precompressed ceramic pan green compact, certain pressure isostatic pressed are controlled with cold isostatic press Certain time is molded, finally the ceramic pan green compact after shaping are put into vacuum drying chamber, it is dry 6-8 hours with 70-80 DEG C, obtain To the ceramic pan green compact of drying；
（4）Ceramic pan green compact after above-mentioned drying are fitted into non-pressure sintering furnace, it is protective atmosphere to be filled with flowing argon gas, with certain Heating rate be warming up to 2050-2150 DEG C, Isothermal sinter 60-80 minutes naturally cools to room temperature after closing power supply, takes out, Grinding, polishing.
A kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity, step（1）Described according to certain Ratio refers to that silicon carbide micro-powder, boron carbide micro powder, liquid phenolic resin, the proportioning of graphene are 100:1:8:5.
A kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity, step（1）Described in absolute ethyl alcohol Addition be treat ball milling component sum 1.5-2 times, the addition of silicon carbide ceramics ball is the 30- for treating ball milling component sum 40%。
A kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity, step（3）Described in mould refer to The mould being made up of mould steel or polyurethane material
A kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity, step（3）Described in isostatic pressing one Fix time and specifically refer to pressure for 2200MPa, dwell time 5-6 minute.
A kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity, step（4）Described in certain liter Warm speed refers to 30-50 DEG C/min heating rate.
It is an advantage of the invention that：The present invention is micro- by silicon carbide micro-powder, boron carbide by by scientific and reasonable composition proportion Powder, liquid phenolic resin, graphene composition compounding, are made up of techniques such as ball milling, granulation, isostatic pressing, pressureless sinterings Silicon carbide ceramics pot.Wherein adding liquid phenolic resin is scattered in silicon carbide ceramics slurry as binding agent and carbon source Excellent performance, so that the carbon being cracked to form under the liquid phenolic resin condition of high temperature disperses evenly in ceramic body, It is more beneficial for the silica on silicon carbide micro-powder surface being reduced into carborundum, so as to play the effect of more preferable acceleration of sintering, Carry high surface energy；And the boron in boron carbide can be solidly soluted into carborundum lattice reduces crystal boundary energy, boron is improved with carbon collective effect Sintering activity, promotes densification process；The addition of graphene simultaneously, can be good compatible with silicon carbide ceramics and in high temperature It is lower to keep stable, because graphene has high thermal conductivity, equivalent to adding a phonon silicon carbide ceramic body is equivalent The express passway of transmission, increases the transport velocity of phonon, the thermal conductivity of silicon carbide ceramics is then improved, while improving bending Intensity, fracture toughness.
Ceramic pan green compact are made in the present invention by the way of isostatic pressing, and the green density being made is big, and uniformity is good, strong Degree is big, is sinterable by simple drying, while using pressureless sintering, reducing energy consumption；The inventive method is simply easy to industry Control, cost of material is simple and easy to get, can manufacture nontoxic, the ceramic pan of food can be directly contacted, with higher heat Conductance, accelerates the brew time of food, so as to reach the effect of energy-conservation.
Embodiment
A kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity, including step in detail below：
（1）100g silicon carbide micro-powders, 1g boron carbide micro powders, 8g liquid phenolic resins, 5g graphenes are added in ball grinder, with The absolute ethyl alcohol measured of 1.5-2 times of each component of addition is solvent, the silicon carbide ceramics ball of the amount of each component 30% as ball-milling medium, Quick ball milling 15 minutes in ball mill, each composition is well mixed；
（2）The silicon carbide ceramics slurry after ball milling is put into vacuum drying chamber, 50 DEG C of dryings are then broken in grinding body Zhong Subcommittee-to, mistake 40 mesh standard sieves are granulated, and obtain ceramic particle.
（3）Above-mentioned ceramic particle is added in the mould that mould steel is made, unidirectionally pressurizeed under 20MPa, pressurize 60 seconds is obtained To precompressed ceramic pan green compact, the pack of precompressed ceramic pan green compact is then vacuumized into sealing, with cold isostatic press, control pressure is Ceramic pan green compact after shaping are finally put into vacuum drying chamber by 2200MPa, isostatic pressing pressurize 5 minutes, dry with 70 DEG C The dry ceramic pan green compact 6 hours, dried；
（4）Ceramic pan green compact after above-mentioned drying are fitted into non-pressure sintering furnace, it is protective atmosphere to be filled with flowing argon gas, with 30 DEG C/min heating rate is warming up to 2100 DEG C, Isothermal sinter 60 minutes naturally cools to room temperature after closing power supply, takes out, grinds Mill, polishing.

Claims (6)

1. a kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity, it is characterised in that including walking in detail below Suddenly：
（1）Silicon carbide micro-powder, boron carbide micro powder, liquid phenolic resin, graphene are added to ball grinder according to certain ratio In, using absolute ethyl alcohol as solvent, silicon carbide ceramics ball is as ball-milling medium, quick ball milling 15-20 minutes in ball mill, respectively into Divide well mixed；
（2）The silicon carbide ceramics slurry after ball milling is put into vacuum drying chamber, 50-60 DEG C of drying, then in grinding body Zhong Subcommittee-to It is broken, the granulation of 40-50 mesh standard sieves is crossed, ceramic particle is obtained；
（3）Above-mentioned ceramic particle is added in mould, unidirectionally pressurizeed under 20-22MPa, pressurize 60-90 seconds obtains precompressed ceramics Pot green compact, then vacuumize sealing by the pack of precompressed ceramic pan green compact, certain pressure isostatic pressing are controlled with cold isostatic press Certain time, finally the ceramic pan green compact after shaping are put into vacuum drying chamber, it is dry 6-8 hours with 70-80 DEG C, dried Dry ceramic pan green compact；
（4）Ceramic pan green compact after above-mentioned drying are fitted into non-pressure sintering furnace, it is protective atmosphere to be filled with flowing argon gas, with certain Heating rate be warming up to 2050-2150 DEG C, Isothermal sinter 60-80 minutes naturally cools to room temperature after closing power supply, takes out, Grinding, polishing.
2. a kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity according to claim 1, its feature It is, step（1）Described in refer to silicon carbide micro-powder, boron carbide micro powder, liquid phenolic resin, graphene according to a certain percentage Proportioning be 100:1:8:5.
3. a kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity according to claim 1, its feature It is, step（1）Described in the addition of absolute ethyl alcohol be treat ball milling component sum 1.5-2 times, silicon carbide ceramics ball Addition is the 30-40% for treating ball milling component sum.
4. a kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity according to claim 1, its feature It is, step（3）Described in mould refer to the mould being made up of mould steel or polyurethane material.
5. a kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity according to claim 1, its feature It is, step（3）Described in isostatic pressing certain time specifically refer to pressure for 2200MPa, dwell time 5-6 minute.
6. a kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity according to claim 1, its feature It is, step（4）Described in certain heating rate refer to 30-50 DEG C/min heating rate.
CN201710466904.7A 2017-06-20 2017-06-20 A kind of preparation method of the silicon carbide ceramics pot of graphene enhancing thermal conductivity Pending CN107176838A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108821777A (en) * 2018-06-28 2018-11-16 浙江东新新材料科技有限公司 Graphene/carbon SiClx composite ceramics and preparation method thereof
CN109020598A (en) * 2018-08-13 2018-12-18 蒋锋 A kind of ceramic ware for daily use and preparation method thereof that high thermal conductivity antibacterial is wear-resisting
CN112592185A (en) * 2020-11-13 2021-04-02 常州晶泰新材料科技有限公司 Graphene-reinforced silicon carbide heating rod and preparation method thereof
CN113956049A (en) * 2021-11-09 2022-01-21 北方民族大学 Method for preparing high-density ceramic by pressureless sintering of beta-SiC powder synthesized by self-propagating combustion
CN115710127A (en) * 2022-11-21 2023-02-24 北方民族大学 Preparation method of graphene-toughened silicon carbide ceramic material
CN116789454A (en) * 2023-07-04 2023-09-22 北京亦盛精密半导体有限公司 Silicon carbide ceramic and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01290560A (en) * 1988-05-16 1989-11-22 Toshiba Corp Production of silicon carbide ceramic
CN104478438A (en) * 2014-12-08 2015-04-01 中国科学院上海硅酸盐研究所 Low-resistivity silicon carbide ceramic and preparation method thereof
CN104926313A (en) * 2015-06-29 2015-09-23 山东大学 High-thermal-conductivity reaction-sintered silicon carbide ceramic material and preparation method thereof
CN104926312A (en) * 2015-06-29 2015-09-23 莱芜亚赛陶瓷技术有限公司 High-thermal-conductivity pressurelessly-sintered silicon carbide ceramic material and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01290560A (en) * 1988-05-16 1989-11-22 Toshiba Corp Production of silicon carbide ceramic
CN104478438A (en) * 2014-12-08 2015-04-01 中国科学院上海硅酸盐研究所 Low-resistivity silicon carbide ceramic and preparation method thereof
CN104926313A (en) * 2015-06-29 2015-09-23 山东大学 High-thermal-conductivity reaction-sintered silicon carbide ceramic material and preparation method thereof
CN104926312A (en) * 2015-06-29 2015-09-23 莱芜亚赛陶瓷技术有限公司 High-thermal-conductivity pressurelessly-sintered silicon carbide ceramic material and preparation method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108821777A (en) * 2018-06-28 2018-11-16 浙江东新新材料科技有限公司 Graphene/carbon SiClx composite ceramics and preparation method thereof
CN109020598A (en) * 2018-08-13 2018-12-18 蒋锋 A kind of ceramic ware for daily use and preparation method thereof that high thermal conductivity antibacterial is wear-resisting
CN112592185A (en) * 2020-11-13 2021-04-02 常州晶泰新材料科技有限公司 Graphene-reinforced silicon carbide heating rod and preparation method thereof
CN113956049A (en) * 2021-11-09 2022-01-21 北方民族大学 Method for preparing high-density ceramic by pressureless sintering of beta-SiC powder synthesized by self-propagating combustion
CN115710127A (en) * 2022-11-21 2023-02-24 北方民族大学 Preparation method of graphene-toughened silicon carbide ceramic material
CN115710127B (en) * 2022-11-21 2023-10-27 北方民族大学 Preparation method of graphene toughened silicon carbide ceramic material
CN116789454A (en) * 2023-07-04 2023-09-22 北京亦盛精密半导体有限公司 Silicon carbide ceramic and preparation method thereof
CN116789454B (en) * 2023-07-04 2024-01-02 北京亦盛精密半导体有限公司 Silicon carbide ceramic and preparation method thereof

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Application publication date: 20170919