CN106278143A - A kind of high strength electroceramice product and preparation method thereof - Google Patents

A kind of high strength electroceramice product and preparation method thereof Download PDF

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Publication number
CN106278143A
CN106278143A CN201610581951.1A CN201610581951A CN106278143A CN 106278143 A CN106278143 A CN 106278143A CN 201610581951 A CN201610581951 A CN 201610581951A CN 106278143 A CN106278143 A CN 106278143A
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China
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product
mud
kaolin
zirconium oxide
pugging
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CN201610581951.1A
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陈启军
邓建国
刘明华
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
    • C04B2235/3472—Alkali metal alumino-silicates other than clay, e.g. spodumene, alkali feldspars such as albite or orthoclase, micas such as muscovite, zeolites such as natrolite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance

Abstract

A kind of high strength electroceramice product, it is by Kaolin, α Al2O3Powder, potassium albite, lithium Anhydrite, zirconium oxide, stabilizer are through wet ball grinding, vibration screening, form except ferrum, press filt, old, vacuum pugging, molding, drying, glazing and calcination；It is characterized in that component by weight: Kaolin 35 45, α Al2O3Powder 25 45, potassium albite 1 10, lithium Anhydrite 5 15, zirconium oxide 6 12, stabilizer 5 10 is prepared；It is an advantage of the current invention that High anti bending strength, toughness of products by force, the most easy to crack and burst apart, wear-resisting be suitable in the environment that dust storm rainwater is big use, length in service life, safety and environmental protection；Present invention is mainly used for the production of the electric porcelain insulator of 160KN, 240KN, 300KN, 420KN, 500KN and above each strength grade.

Description

A kind of high strength electroceramice product and preparation method thereof
Technical field
The present invention relates to a kind of high strength electroceramice product and preparation method thereof, specifically a kind of high strength electroceramice product And preparation method thereof.
Background technology
The electrotechnical porcelain product and the composition of raw materials thereof that produce at present are low-intensity material sides, and the insulator that this formula produces exists mostly Below 70kN.
Existing low-intensity material side is disadvantageous in that rupture strength is low and ftractures, and product quality can not ensure, and is using In dangerous.The bique intensity of product only has 90MPa, upper white glaze 105 MPa, upper palm fibre glaze 100 MP.The product of this intensity is not Can serve as 160KN, 240KN, 300KN, 420KN, 500KN and above electric porcelain insulator.
For solving this problem, existing high intensity 160KN, each strength grade such as 240KN, 300KN, 420KN and 500KN Electric ceramic suspended insulator produces, and most manufacturer all uses and adds bauxite in low-intensity formula to improve three oxygen in blank Change two aluminum content.However, current aluminium sesquioxide the most also can only be between 35 ~ 50%, the material Fang Su of this aluminum content Porcelain intensity also only 120MPa, upper white glaze 175 MPa, upper palm fibre glaze 160 MP, and after bauxite addition is more than 55%, insulator Production be unable to reach the requirement of wet moulding.
For increasing intensity, people use corundum ceramic, make alumina content reach 99.9%, but its rupture strength also only has Reach 390MPa.
For improving rupture strength, people use again addition zirconium oxide, make it have high rupture strength, and pure zirconia is made pottery Porcelain rupture strength is up to 1200MPa.In order to ensure that stiff-mud process shapes, it is feasible for introducing zirconium oxide in material side, and it can carry The intensity of high material side.It is well known that zirconia ceramics has three kinds of crystal habits: monocline, four directions, cube crystalline phase.Oxygen under room temperature Change zircon ceramic only to occur with monoclinic phase, be heated to 1100 DEG C of left/right rotations and become Tetragonal, be heated to higher temperature and can be converted into vertical Fang Xiang.Owing to bigger change in volume can be produced monocline tetragonal phase converting in opposite directions when, again can be on the contrary when of cooling Direction there is bigger change in volume, easily cause the cracking of product, limit the production of zirconia ceramics.
The material coefficient of expansion is low, and namely cold and hot change met by material, and the contraction change of self is little.Any Material shrinkage changes Material cracks will be caused.For solving this problem, people add again lithium silicates or lithium Anhydrite further in dispensing.Because lithium The silicate material coefficient of expansion, close to zero, has addition lithium silicates example in the material, and lithium Anhydrite is lithium silicates.At material Middle addition lithium Anhydrite is also feasible.
Summary of the invention
For solving series of problems and deficiency present in current high strength ceramics insulator production process, the purpose of the present invention Just it is to provide a kind of anti-folding, cracking resistance, improves product quality, length in service life, a kind of high strength electroceramice of reaching safety and environmental protection produce Product and preparation method thereof.
High strength electroceramice product alleged by the present invention refers to ceramic insulator.
The core of the present invention be its dispensing be Kaolin, α-Al2O3Powder, potassium albite, lithium Anhydrite, zirconium oxide, stabilizer, And component by weight: Kaolin 35-45, α-Al2O3Powder 25-45, potassium albite 1-10, lithium Anhydrite 5-15, zirconium oxide 6-12, surely Determine agent 5-10 to mix through wet ball grinding；After ball milling fineness reaches 600 mesh screen residue 0.1-0.3, through 600 mesh vibration screening, except ferrum, Obtain without coarse grained mud；Mud carries out press filt through pressure filter, and the mud cake obtained is after thick level pugging, thick level pugging Mud section after 15 days old again through vacuum pugging.Through vacuum practice system after mud section send into molding carry out formed product, Dry, glazing and burn till, burn till qualified product through cement gel load connect metal install adnexa become high-strength products, product Can dispatch from the factory use through operations such as inspections again.
The present invention uses α-Al2O3Powder ensures aluminium sesquioxide content in isolator material；Increase reinforcing material oxidation Zirconium, in order to the toughness of reinforcing material adds stabilizer, adds lithium Anhydrite to reduce in the expansion material of material.
Stabilizer alleged by the present invention refers to yittrium oxide.
Because zirconia ceramics has three kinds of crystal habits: monocline, four directions, cube crystalline phase.Under room temperature zirconia ceramics only with Monoclinic phase occurs, is heated to 1100 DEG C of left/right rotations and becomes Tetragonal, is heated to higher temperature and can be converted into Emission in Cubic.Due at list Monoclinic phase can produce bigger change in volume to tetragonal phase converting when, can occur again bigger when of cooling in the opposite direction Change in volume, easily cause the cracking of product, make product quality decline.After but zirconium oxide adds stabilizer, Tetragonal Can stablize at normal temperatures, therefore the sudden change of volume will not occur after heating, from without ftractureing, burst apart, thus Substantially increase the sub-product quality of high-strength insulation and use safety coefficient.
The present invention uses pure α-Al2O3Powder aluminium sesquioxide can reach 99%, because the general aluminium sesquioxide of bauxite exists 85%.In same weight percentage composition, so add α-Al2O3Powder, in material side, aluminium sesquioxide content can improve, and increases Aluminium sesquioxide content in material side, also increases the rupture strength of material side.
Present invention is mainly used for 160KN, 240KN, 300KN, 420KN, 500KN and the porcelain insulation of above each strength grade The production of son.
After manufacture of materials, intensity reaches: product bique intensity 185MPa, upper white glaze 255 MPa, upper palm fibre glaze 245 MP.
It is an advantage of the current invention that High anti bending strength, toughness of products by force, the most easy to crack and burst apart, wear-resisting be suitable at dust storm Use, length in service life, safety and environmental protection in the environment that rainwater is big.
Detailed description of the invention
Detailed description below is a case, and the present invention is not limited solely to following case study on implementation.
Case study on implementation one: component Kaolin 35, α-Al by weight2O3Powder 30, potassium albite 8, lithium Anhydrite 10, zirconium oxide 12, Yittrium oxide 5 adds ball mill by butt with weight proportion, and through wet ball grinding, ball milling fineness reaches 600 mesh screen residue 0.1-0.3 After, through 600 mesh vibration screening, except ferrum, obtain without coarse grained mud；Mud carries out press filt through pressure filter, the mud cake obtained Mud section after thick level pugging, thick level pugging after 15 days old again through vacuum pugging.After vacuum practices system Mud section send into molding carry out formed product, drying, glazing and burn till, burn till qualified product through cement gel load connect metal peace Dress adnexa becomes high-strength products, product and can dispatch from the factory use through operations such as inspections.
Case study on implementation two: component Kaolin 38, α-Al by weight2O3Powder 25, potassium albite 10, lithium Anhydrite 10, zirconium oxide 10, yittrium oxide 7 adds ball mill by butt with weight proportion, and through wet ball grinding, ball milling fineness reaches 600 mesh screen residue 0.1- After 0.3, through 600 mesh vibration screening, except ferrum, obtain without coarse grained mud；Mud carries out press filt through pressure filter, the mud obtained Cake mud section after thick level pugging, thick level pugging after 15 days old again through vacuum pugging.After vacuum practices system Mud section send into molding and carry out formed product, drying, glazing and burn till, burn till qualified product and connect metal through cement gel load Adnexa is installed become high-strength products, product and can dispatch from the factory use through operations such as inspections again.
Case study on implementation three: component Kaolin 40, α-Al by weight2O3Powder 29, lithium Anhydrite 15, zirconium oxide 6, yittrium oxide 10 is pressed Butt adds ball mill with weight proportion, through wet ball grinding；After ball milling fineness reaches 600 mesh screen residue 0.1-0.3, through 600 mesh Vibration screening, except ferrum, obtain without coarse grained mud；Mud carries out press filt through pressure filter, and the mud cake obtained is practiced through thick level Mud section after mud, thick level pugging after 15 days old again through vacuum pugging.Mud section after vacuum practices system is sent into into Type carry out formed product, drying, glazing and burn till, burn till qualified product through cement gel load connect metal install adnexa become High-strength products, product can dispatch from the factory use through operations such as inspections again.

Claims (2)

1. a high strength electroceramice product, it is by Kaolin, α-Al2O3Powder, potassium albite, lithium Anhydrite, zirconium oxide, stabilizer warp Cross wet ball grinding, vibration screening, form except ferrum, press filt, old, vacuum pugging, molding, drying, glazing and calcination；Its feature exists In component by weight: Kaolin 35-45, α-Al2O3Powder 25-45, potassium albite 1-10, lithium Anhydrite 5-15, zirconium oxide 6-12, surely Determine agent 5-10 to prepare.
2. a manufacture method for high strength electroceramice product, by weight component: Kaolin 35-45, α-al2o3powder 25-45, potassium sodium Anhydrite 1-10, lithium Anhydrite 5-15, zirconium oxide 6-12, stabilizer 5-10 prepare；After it is characterized in that mixing above-mentioned dispensing Through wet ball grinding, after ball milling fineness reaches 600 mesh screen residue 0.1-0.3, through 600 mesh vibration screening, except ferrum, obtain without coarse granule Mud；Mud carries out press filt through pressure filter, and the mud cake obtained mud section after thick level pugging, thick level pugging was through 15 days Old after again through vacuum pugging；Mud section after vacuum practices system is sent into molding and is carried out formed product, drying, glazing and burning Become, burn till qualified product through cement gel load connect metal install adnexa become high-strength products, product again through inspection etc. Operation can be dispatched from the factory use.
CN201610581951.1A 2016-07-22 2016-07-22 A kind of high strength electroceramice product and preparation method thereof Pending CN106278143A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107954704A (en) * 2017-12-13 2018-04-24 谢琦 A kind of porcelain insulator and preparation method thereof
CN112608028A (en) * 2020-12-31 2021-04-06 江苏南瓷绝缘子股份有限公司 High-strength suspension insulator head glaze and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101538150A (en) * 2009-04-24 2009-09-23 西安杰力特种瓷研制有限责任公司 Ceramics of improving mechanical strength and cold and hot shock property and preparation method thereof
CN102786322A (en) * 2012-08-28 2012-11-21 江苏南瓷绝缘子有限公司 High-strength electroceramics ash glaze formulation and preparation method thereof
CN103253926A (en) * 2013-05-15 2013-08-21 彭泽县明伟科技有限公司 Aluminum high-pressure electrical porcelain and production process thereof
CN104072113A (en) * 2014-06-30 2014-10-01 江苏南瓷绝缘子股份有限公司 High-strength ceramic prepared from glass and production process thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101538150A (en) * 2009-04-24 2009-09-23 西安杰力特种瓷研制有限责任公司 Ceramics of improving mechanical strength and cold and hot shock property and preparation method thereof
CN102786322A (en) * 2012-08-28 2012-11-21 江苏南瓷绝缘子有限公司 High-strength electroceramics ash glaze formulation and preparation method thereof
CN103253926A (en) * 2013-05-15 2013-08-21 彭泽县明伟科技有限公司 Aluminum high-pressure electrical porcelain and production process thereof
CN104072113A (en) * 2014-06-30 2014-10-01 江苏南瓷绝缘子股份有限公司 High-strength ceramic prepared from glass and production process thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107954704A (en) * 2017-12-13 2018-04-24 谢琦 A kind of porcelain insulator and preparation method thereof
CN107954704B (en) * 2017-12-13 2020-03-27 谢琦 Porcelain insulator and preparation method thereof
CN112608028A (en) * 2020-12-31 2021-04-06 江苏南瓷绝缘子股份有限公司 High-strength suspension insulator head glaze and preparation method thereof

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