CN106116445A - High-alumina direct current porcelain insulator and preparation method thereof - Google Patents

High-alumina direct current porcelain insulator and preparation method thereof Download PDF

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Publication number
CN106116445A
CN106116445A CN201610429680.8A CN201610429680A CN106116445A CN 106116445 A CN106116445 A CN 106116445A CN 201610429680 A CN201610429680 A CN 201610429680A CN 106116445 A CN106116445 A CN 106116445A
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China
Prior art keywords
parts
direct current
porcelain insulator
insulator
current porcelain
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Pending
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CN201610429680.8A
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Chinese (zh)
Inventor
罗杰
杨志峰
王根水
刘少华
王士维
谢从珍
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JIANGSU NANCI INSULATORS CO Ltd
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JIANGSU NANCI INSULATORS CO Ltd
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Priority to CN201610429680.8A priority Critical patent/CN106116445A/en
Publication of CN106116445A publication Critical patent/CN106116445A/en
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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
    • C04B33/00—Clay-wares
    • C04B33/24—Manufacture of porcelain or white ware
    • C04B33/26—Manufacture of porcelain or white ware of porcelain for electrical insulation
    • 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
    • C04B2235/34—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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

The invention discloses a kind of High-alumina direct current porcelain insulator, comprise and be made up of the composition of raw materials of following parts by weight: mica powder 10 15 parts, alumine 15 parts, aluminium oxide 35 45 parts, 5 10 parts of white glue mud, low Na-k feldspar 10 15 parts, mullite 8 10 parts, universal love clay 15 25 parts.Porcelain insulator good mechanical property of the present invention and production cost are low, it is easy to technology controlling and process；Use alumine and mica powder, shorten Ball-milling Time, not only decrease cost but also improve processing performance.Present invention introduces 10 15% low Na-k feldspars, in blank chemical component, Na content is less than 0.2%, the local swelling stress produced in transition process due to alkali metallic sodium ion in electroporcelain material can be stoped to cause insulator to rupture, can preferably solve the porcelain piece when ion migration is internally formed the conductive layer that resistivity is different simultaneously, cause non-uniform electric, under DC electric field long duration of action, make insulator breakdown problem.

Description

High-alumina direct current porcelain insulator and preparation method thereof
Technical field
The invention belongs to electroceramics technical field, it is specifically related to a kind of High-alumina direct current porcelain insulator formula and preparation method thereof.
Background technology
Electroceramics blank refers to clay raw material and fluxed raw material and other raw materials, and (quartz, high aluminium material or other mineral are former Material) mixture that forms by a certain percentage, through levigate and be mixed into and be available for base pug, the just letter of the pug of this base It is referred to as blank.
Must assure that when determining various material rate blank can meet processing performance required by electric porcelain production process and Burn till the physical property requirements of rear porcelain.As long as the processing performance burning till front blank depends on quality and the consumption of clay raw material, The firing process of blank depends primarily on flux raw material.
Electroceramics long-term ageing problem under DC electric field than AC field under serious, Chief is ceramic material: when it When his condition is identical, the Alkali-Metal Na+in transition process in electroporcelain material composition, owing to obtaining electronics, forms volume ratio ion Bulky atom, consequent local swelling stress is that insulator ruptures；When ion migration, porcelain piece is internally formed resistance The conductive layer that rate is different, causes non-uniform electric, under DC electric field long duration of action, makes insulator breakdown.Therefore open Send out a kind of Direct-current porcelain insulator the most necessary.
Mechanical strength is always the most important performance that electric porcelain production is pursued, during because electroporcelain material has high intensity, Under conditions of equal electric pressure, the utilization rate of material can be improved, reduce cost.Traditional Direct-current porcelain insulator, machinery is strong Spend the highest, after glazing to improve electroceramics mechanical, electrical, hot property effect is bad, especially can not be bigger improve porcelain bending Intensity.
Summary of the invention
For solving the deficiencies in the prior art, it is an object of the invention to provide a kind of good mechanical property, and production cost is low High-alumina direct current porcelain insulator and preparation method thereof.
For reaching above-mentioned purpose, the present invention is achieved by the following technical solutions: a kind of High-alumina direct current porcelain insulating Son, comprises and is made up of the composition of raw materials of following parts by weight: mica powder 10-15 part, alumine 1-5 part, aluminium oxide 35-45 Part, white glue mud 5-10 part, low Na-k feldspar 5-10 part, mullite 8-10 part, universal love clay 15-25 part.
Described High-alumina direct current porcelain insulator is more than 120MPa without glaze bending strength more than 200Mpa, hot strength.
The preparation method of above-mentioned High-alumina direct current porcelain insulator, first by raw material in the ratio weighing prepared, adds base material former The water of material gross weight 35 ~ 45% obtains slurry, then slurry is carried out ball milling 9-10h, and the new slurry obtained is laggard through screening out ferrum Row press filt, the mud cake obtained extrudes in vacuum deairing machine, and the mud section obtained carries out electricity again and dries in the shade, and last molding, is after drying Obtain green compact；Green compact through glazing, burn till, obtain last finished product after mucilage binding.
The invention has the beneficial effects as follows: porcelain insulator good mechanical property of the present invention and production cost are low, it is easy to technology controlling and process； Bending strength without glaze is more than 200MPa,.Hot strength is more than 120MPa.It is raw materials used that to be existing conventional ceramic mineral former Material, uses alumine and mica powder, mullite, shortens Ball-milling Time, not only decreases cost but also improve processing performance.For solving Certainly electric porcelain insulator long-term ageing problem under DC electric field, present invention introduces the low Na-k feldspar of 10-15%, and blank chemistry becomes In point, Na content is less than 0.2%, and the local produced in transition process due to alkali metallic sodium ion in electroporcelain material can be stoped to expand Stress causes insulator to rupture, and can preferably solve the porcelain piece when ion migration is internally formed the conduction that resistivity is different simultaneously Layer, causes non-uniform electric, makes insulator breakdown problem under DC electric field long duration of action.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention made concrete introduction.
In raw material of the present invention,
Mica powder: buy from Tian Wei Chemical Co., Ltd.；
Mullite: for common electrofused mullite, Ai2 O 371.7%, SiO225.6%, More island, the place of production；
Alumine: Ai2 O 3 85% 、Fe 2 O 3 1.3%、 SiO 29.8%, Guangdong, the place of production；
White glue mud: SiO 2 55%、 Ai 2 O 330% Guangxi, the place of production；
Universal love clay: SiO2 58%、Ai 2 O 327% Boai County, place of production Henan Province；
Low Na-k feldspar: K 2 O 13%, buys from pasture, Kangbao County white stone ditch fluorite ore；
Embodiment 1:
A kind of High-alumina direct current porcelain insulator, comprises and is made up of the composition of raw materials of following parts by weight: mica powder 15 parts, alumine 5 parts, aluminium oxide 35 parts, 5 parts of white glue mud, low Na-k feldspar 10 parts, mullite 8 parts, universal love clay 25 parts.
During preparation, first raw material is obtained slurry in the ratio weighing prepared, the water adding base material raw material gross weight 35%, Then slurry being carried out ball milling 9h, the new slurry obtained carries out press filt after screening out ferrum, and the mud cake obtained is at vacuum deairing machine Inside extruding, the mud section obtained carries out electricity again and dries in the shade, and last molding, i.e. obtains green compact after drying；Green compact through glazing, burn till, mucilage binding After obtain last finished product.
The performance of the present embodiment High-alumina direct current porcelain insulator is as follows:
Bulk density: 2.83 g/cm3；
Open porosity: 0.076%；
Remain silent porosity: 6.85%；
Hot strength: 122Mpa；
Bending strength: without glaze 203MPa.
Embodiment 2:
A kind of High-alumina direct current porcelain insulator, comprises and is made up of the composition of raw materials of following parts by weight: mica powder 10 parts, alumine 1 part, aluminium oxide 45 parts, 10 parts of white glue mud, low Na-k feldspar 10 parts, mullite 10 parts, universal love clay 15 parts；
During preparation, first raw material is obtained slurry, then in the ratio weighing prepared, the water adding base material raw material gross weight 45% Slurry is carried out ball milling 10h, and the new slurry obtained carries out press filt after screening out ferrum, and the mud cake obtained squeezes in vacuum deairing machine System, the mud section obtained carries out electricity again and dries in the shade, and last molding, i.e. obtains green compact after drying；Green compact through glazing, burn till, after mucilage binding To last finished product.
The performance of the present embodiment High-alumina direct current porcelain insulator is as follows:
Bulk density: 2.84 g/cm3；
Open porosity: 0.078%；
Remain silent porosity: 6.87%；
Hot strength: 121Mpa；
Bending strength: without glaze 210MPa.
Embodiment 3: a kind of High-alumina direct current porcelain insulator, comprises and is made up of the composition of raw materials of following parts by weight: mica powder 12 parts, alumine 3 parts, aluminium oxide 40 parts, 7 parts of white glue mud, low Na-k feldspar 8 parts, mullite 9 parts, universal love clay 18 parts.
During preparation, first raw material is obtained slurry in the ratio weighing prepared, the water adding base material raw material gross weight 40%, Then slurry being carried out ball milling 10h, the new slurry obtained carries out press filt after screening out ferrum, and the mud cake obtained is at vacuum deairing machine Inside extruding, the mud section obtained carries out electricity again and dries in the shade, and last molding, i.e. obtains green compact after drying；Green compact through glazing, burn till, mucilage binding After obtain last finished product.
The performance of the present embodiment High-alumina direct current porcelain insulator is as follows:
Bulk density: 2.85 g/cm3；
Open porosity: 0.077%；
Remain silent porosity: 6.88%；
Hot strength: 125Mpa；
Bending strength: without glaze 215MPa.
Invention preferred implementation, it should be pointed out that: for those skilled in the art, without departing from On the premise of the principle of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as the guarantor of the present invention Protect scope.

Claims (3)

1. a High-alumina direct current porcelain insulator, it is characterised in that comprise and be made up of the composition of raw materials of following parts by weight: mica powder 10-15 part, alumine 1-5 part, aluminium oxide 35-45 part, white glue mud 5-10 part, low Na-k feldspar 5-10 part, mullite 8-10 Part, universal love clay 15-25 part.
High-alumina direct current porcelain insulator the most according to claim 1, it is characterised in that described High-alumina direct current porcelain insulator is without glaze Bending strength is more than 200Mpa, and hot strength is more than 120MPa.
The preparation method of High-alumina direct current porcelain insulator the most according to claim 1, it is characterised in that
First raw material is obtained slurry, then to slurry in the ratio weighing prepared, the water adding base material raw material gross weight 35 ~ 45% Material carries out ball milling 9-10h, and the new slurry obtained carries out press filt after screening out ferrum, and the mud cake obtained squeezes in vacuum deairing machine System, the mud section obtained carries out electricity again and dries in the shade, and last molding, i.e. obtains green compact after drying；Green compact through glazing, burn till, after mucilage binding To last finished product.
CN201610429680.8A 2016-06-17 2016-06-17 High-alumina direct current porcelain insulator and preparation method thereof Pending CN106116445A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106747292A (en) * 2016-12-30 2017-05-31 重庆鸽牌电瓷有限公司 High intensity direct current electric ceramic formulation
CN107200568A (en) * 2017-06-01 2017-09-26 合肥尚强电气科技有限公司 A kind of environment-friendlyweather-proof weather-proof high intensity electric insulator and preparation method thereof
CN108840660A (en) * 2018-08-10 2018-11-20 江西正强电瓷电器有限公司 A kind of high-intensitive, shock resistance porcelain insulator and preparation method thereof
CN110590324A (en) * 2019-08-05 2019-12-20 湖南省醴陵市华电电瓷制造有限公司 Novel material for high-strength electric porcelain and preparation method thereof
CN113443892A (en) * 2021-07-14 2021-09-28 江西东维电气有限公司 High-toughness conical suspension type porcelain insulator and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102786289A (en) * 2012-09-05 2012-11-21 江苏南瓷绝缘子有限公司 High-alumina direct current porcelain insulator and preparation method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102786289A (en) * 2012-09-05 2012-11-21 江苏南瓷绝缘子有限公司 High-alumina direct current porcelain insulator and preparation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106747292A (en) * 2016-12-30 2017-05-31 重庆鸽牌电瓷有限公司 High intensity direct current electric ceramic formulation
CN107200568A (en) * 2017-06-01 2017-09-26 合肥尚强电气科技有限公司 A kind of environment-friendlyweather-proof weather-proof high intensity electric insulator and preparation method thereof
CN108840660A (en) * 2018-08-10 2018-11-20 江西正强电瓷电器有限公司 A kind of high-intensitive, shock resistance porcelain insulator and preparation method thereof
CN110590324A (en) * 2019-08-05 2019-12-20 湖南省醴陵市华电电瓷制造有限公司 Novel material for high-strength electric porcelain and preparation method thereof
CN113443892A (en) * 2021-07-14 2021-09-28 江西东维电气有限公司 High-toughness conical suspension type porcelain insulator and preparation method thereof
CN113443892B (en) * 2021-07-14 2022-05-27 江西东维电气有限公司 High-toughness conical suspension type porcelain insulator and preparation method thereof

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Application publication date: 20161116