CN107746270A - A kind of varistor ceramics materials and preparation method thereof - Google Patents

A kind of varistor ceramics materials and preparation method thereof Download PDF

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CN107746270A
CN107746270A CN201711005284.3A CN201711005284A CN107746270A CN 107746270 A CN107746270 A CN 107746270A CN 201711005284 A CN201711005284 A CN 201711005284A CN 107746270 A CN107746270 A CN 107746270A
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temperature
parts
preparation
ceramics materials
varistor ceramics
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王金英
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Foshan Ruisheng Technology Co Ltd
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Foshan Ruisheng Technology Co Ltd
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Abstract

The invention provides a kind of varistor ceramics materials and preparation method thereof.Preparation method is as follows：（1）By carborundum, silicon nitride, kaolin, tin ash, vanadic anhydride, boron carbide, strontium carbonate, manganese carbonate, monazite, spherical nano TiO 2 and absolute ethyl alcohol mixing and ball milling；（2）It is put into baking oven and dries；（3）Polyanion cellulose, potassium hyperchlorate, beeswax, orthophosphate and makrolon are added, is added after well mixed in double screw extruder and carries out extruding pelletization；（4）Add in single shaft hydraulic press and be pressed into after disk the dumping at 600 700 DEG C of temperature；（5）It is put into sinter in sintering furnace and produces.The varistor ceramics materials of the present invention, leakage current is very low, and nonlinear factor is high, and non-linear behaviour is good, and consistency is high, and survivability is strong, and antiageing effect is good, and preparation method is simple and cheap.

Description

A kind of varistor ceramics materials and preparation method thereof
Technical field
The present invention relates to field of electronic materials, and in particular to a kind of varistor ceramics materials and preparation method thereof.
Background technology
Varistor ceramics materials refer at a certain temperature with there is non-linear Fu-An Te in a certain particular voltage range A kind of semiconductor ceramic material that property, its resistance strongly reduce with the increase of voltage.According to this non-linear Fu-peace characteristic, Nonlinear resistor, i.e. piezoresistor can be made with this semiconductor ceramic material.The use range of piezoresistor is very Extensively, spark-extinguishing, overvoltage protection can be used for, prepare lightning rod, voltage standard and voltage stabilization etc..Due to piezoresistor Played an important role in terms of protection equipment safety, guarantee equipment normal table work, therefore in Aero-Space, post and telecommunications, railway, vapour The field such as car and household electrical appliance obtains a wide range of applications.The combination property for the varistor ceramics materials sold on the market at present Need further to improve, such as nonlinear factor, leakage current and stability.
The content of the invention
Technical problems to be solved：It is an object of the invention to provide a kind of varistor ceramics materials, leakage current is very low, non- Linear coefficient is high, and non-linear behaviour is good, and consistency is high, and survivability is strong, and antiageing effect is good, and preparation method is simple and valency Lattice are cheap.
Technical scheme：A kind of varistor ceramics materials, it is prepared by following component with parts by weight：
It is further preferred that a kind of described varistor ceramics materials, are prepared by following component with parts by weight：
The preparation method of above-mentioned varistor ceramics materials comprises the following steps：
(1) by carborundum, silicon nitride, kaolin, tin ash, vanadic anhydride, boron carbide, strontium carbonate, manganese carbonate, solitary Stone, spherical nano TiO 2 and absolute ethyl alcohol mixing, it is small to be put into ball grinder the ball milling 4-5 under rotating speed 800-900r/min When；
(2) it is put into baking oven, is dried at 100-110 DEG C of temperature；
(3) polyanion cellulose, potassium hyperchlorate, beeswax, orthophosphate and makrolon are added, double spiral shells are added after being well mixed Extruding pelletization is carried out in bar extruder, each area's temperature is 260-280 DEG C, screw speed 40-60r/min；
(4) add in single shaft hydraulic press and the dumping at 600-700 DEG C of temperature is pressed into after disk under pressure 2.5-3MPa；
(5) being put into sintering furnace the sintering 2-2.5 hours at 1300-1400 DEG C of temperature produces, wherein, heating rate is 5-7 DEG C/ min。
Further, rotating speed is 850r/min in step (1), and Ball-milling Time is 4.5 hours.
Further, step (3) Zhong Ge areas temperature is 270 DEG C, screw speed 50r/min.
Further, pressure is 2.6-2.8MPa in step (4), and dump temperature is 650 DEG C.
Further, sintering temperature is 1350 DEG C in step (5), and heating rate is 6 DEG C/min.
Beneficial effect：The leakage current of the varistor ceramics materials of the present invention is very low, and minimum is only 1.10 μ A/cm2, its is non-linear Coefficient is up to 33, and non-linear behaviour is good, and consistency is high, and survivability is strong, and antiageing effect is good, and preparation method is simple and price It is cheap.
Embodiment
Embodiment 1
A kind of varistor ceramics materials, it is prepared by following component with parts by weight：3 parts of carborundum, 3 parts of silicon nitride, kaolinite 3 parts of soil, 50 parts of tin ash, 0.1 part of vanadic anhydride, 1 part of boron carbide, 1 part of strontium carbonate, 1 part of manganese carbonate, 1 part of monazite, ball It is 3 parts of shape nano titanium oxide, 0.5 part of polyanion cellulose, 0.2 part of potassium hyperchlorate, 0.2 part of beeswax, 1 part of orthophosphate, poly- 0.5 part of carbonic ester, 60 parts of absolute ethyl alcohol.The preparation method of above-mentioned varistor ceramics materials is：
(1) by carborundum, silicon nitride, kaolin, tin ash, vanadic anhydride, boron carbide, strontium carbonate, manganese carbonate, solitary Stone, spherical nano TiO 2 and absolute ethyl alcohol mixing, are put into ball grinder ball milling 4 hours under rotating speed 800r/min；
(2) it is put into baking oven, is dried at 100 DEG C of temperature；
(3) polyanion cellulose, potassium hyperchlorate, beeswax, orthophosphate and makrolon are added, double spiral shells are added after being well mixed Extruding pelletization is carried out in bar extruder, each area's temperature is 260 DEG C, screw speed 40r/min；
(4) add in single shaft hydraulic press and the dumping at 600 DEG C of temperature is pressed into after disk under pressure 2.5MPa；
(5) it is put into sintering furnace to sinter 2 hours at 1300 DEG C of temperature and produces, wherein, heating rate is 5 DEG C/min.
Embodiment 2
A kind of varistor ceramics materials, it is prepared by following component with parts by weight：3.5 parts of carborundum, 3.5 parts of silicon nitride, 3.5 parts of kaolin, 55 parts of tin ash, 0.15 part of vanadic anhydride, 1.5 parts of boron carbide, 1.5 parts of strontium carbonate, manganese carbonate 1.5 Part, 1.5 parts of monazite, 4 parts of spherical nano TiO 2,0.6 part of polyanion cellulose, 0.3 part of potassium hyperchlorate, beeswax 0.3 Part, 1.5 parts of orthophosphate, 0.6 part of makrolon, 65 parts of absolute ethyl alcohol.
The preparation method of above-mentioned varistor ceramics materials is：
(1) by carborundum, silicon nitride, kaolin, tin ash, vanadic anhydride, boron carbide, strontium carbonate, manganese carbonate, solitary Stone, spherical nano TiO 2 and absolute ethyl alcohol mixing, are put into ball grinder ball milling 4 hours under rotating speed 800r/min；
(2) it is put into baking oven, is dried at 100 DEG C of temperature；
(3) polyanion cellulose, potassium hyperchlorate, beeswax, orthophosphate and makrolon are added, double spiral shells are added after being well mixed Extruding pelletization is carried out in bar extruder, each area's temperature is 265 DEG C, screw speed 45r/min；
(4) add in single shaft hydraulic press and the dumping at 600 DEG C of temperature is pressed into after disk under pressure 2.5MPa；
(5) it is put into sintering furnace to sinter 2 hours at 1300 DEG C of temperature and produces, wherein, heating rate is 6 DEG C/min.
Embodiment 3
A kind of varistor ceramics materials, it is prepared by following component with parts by weight：4 parts of carborundum, 4 parts of silicon nitride, kaolinite 4 parts of soil, 60 parts of tin ash, 0.2 part of vanadic anhydride, 2 parts of boron carbide, 1.5 parts of strontium carbonate, 2 parts of manganese carbonate, monazite 1.5 Part, 4.5 parts of spherical nano TiO 2,0.65 part of polyanion cellulose, 0.35 part of potassium hyperchlorate, 0.35 part of beeswax, positive phosphorus 1.5 parts of acid esters, 0.75 part of makrolon, 70 parts of absolute ethyl alcohol.
The preparation method of above-mentioned varistor ceramics materials is：
(1) by carborundum, silicon nitride, kaolin, tin ash, vanadic anhydride, boron carbide, strontium carbonate, manganese carbonate, solitary Stone, spherical nano TiO 2 and absolute ethyl alcohol mixing, are put into ball grinder ball milling 4.5 hours under rotating speed 850r/min；
(2) it is put into baking oven, is dried at 105 DEG C of temperature；
(3) polyanion cellulose, potassium hyperchlorate, beeswax, orthophosphate and makrolon are added, double spiral shells are added after being well mixed Extruding pelletization is carried out in bar extruder, each area's temperature is 270 DEG C, screw speed 50r/min；
(4) add in single shaft hydraulic press and the dumping at 650 DEG C of temperature is pressed into after disk under pressure 2.8MPa；
(5) it is put into sintering furnace to sinter 2 hours at 1350 DEG C of temperature and produces, wherein, heating rate is 6 DEG C/min.
Embodiment 4
A kind of varistor ceramics materials, it is prepared by following component with parts by weight：4.5 parts of carborundum, 4.5 parts of silicon nitride, 4.5 parts of kaolin, 65 parts of tin ash, 0.25 part of vanadic anhydride, 2.5 parts of boron carbide, 1.5 parts of strontium carbonate, manganese carbonate 2.5 Part, 1.5 parts of monazite, 5 parts of spherical nano TiO 2,0.7 part of polyanion cellulose, 0.4 part of potassium hyperchlorate, beeswax 0.4 Part, 1.5 parts of orthophosphate, 0.8 part of makrolon, 75 parts of absolute ethyl alcohol.
The preparation method of above-mentioned varistor ceramics materials is：
(1) by carborundum, silicon nitride, kaolin, tin ash, vanadic anhydride, boron carbide, strontium carbonate, manganese carbonate, solitary Stone, spherical nano TiO 2 and absolute ethyl alcohol mixing, are put into ball grinder ball milling 5 hours under rotating speed 850r/min；
(2) it is put into baking oven, is dried at 105 DEG C of temperature；
(3) polyanion cellulose, potassium hyperchlorate, beeswax, orthophosphate and makrolon are added, double spiral shells are added after being well mixed Extruding pelletization is carried out in bar extruder, each area's temperature is 275 DEG C, screw speed 55r/min；
(4) add in single shaft hydraulic press and the dumping at 650 DEG C of temperature is pressed into after disk under pressure 3MPa；
(5) it is put into sintering furnace to sinter 2.5 hours at 1350 DEG C of temperature and produces, wherein, heating rate is 6 DEG C/min.
Embodiment 5
A kind of varistor ceramics materials, it is prepared by following component with parts by weight：5 parts of carborundum, 5 parts of silicon nitride, kaolinite 5 parts of soil, 70 parts of tin ash, 0.3 part of vanadic anhydride, 3 parts of boron carbide, 2 parts of strontium carbonate, 3 parts of manganese carbonate, 2 parts of monazite, ball It is 6 parts of shape nano titanium oxide, 0.8 part of polyanion cellulose, 0.5 part of potassium hyperchlorate, 0.5 part of beeswax, 2 parts of orthophosphate, poly- 1 part of carbonic ester, 80 parts of absolute ethyl alcohol.The preparation method of above-mentioned varistor ceramics materials is：
(1) by carborundum, silicon nitride, kaolin, tin ash, vanadic anhydride, boron carbide, strontium carbonate, manganese carbonate, solitary Stone, spherical nano TiO 2 and absolute ethyl alcohol mixing, are put into ball grinder ball milling 5 hours under rotating speed 900r/min；
(2) it is put into baking oven, is dried at 110 DEG C of temperature；
(3) polyanion cellulose, potassium hyperchlorate, beeswax, orthophosphate and makrolon are added, double spiral shells are added after being well mixed Extruding pelletization is carried out in bar extruder, each area's temperature is 280 DEG C, screw speed 60r/min；
(4) add in single shaft hydraulic press and the dumping at 700 DEG C of temperature is pressed into after disk under pressure 3MPa；
(5) it is put into sintering furnace to sinter 2.5 hours at 1400 DEG C of temperature and produces, wherein, heating rate is 7 DEG C/min.
Comparative example 1
The present embodiment and the difference of embodiment 1 are not containing strontium carbonate and manganese carbonate.Specifically：
A kind of varistor ceramics materials, it is prepared by following component with parts by weight：3 parts of carborundum, 3 parts of silicon nitride, kaolinite It is 3 parts of soil, 50 parts of tin ash, 0.1 part of vanadic anhydride, 1 part of boron carbide, 1 part of monazite, 3 parts of spherical nano TiO 2, poly- 0.5 part of anionic cellulose, 0.2 part of potassium hyperchlorate, 0.2 part of beeswax, 1 part of orthophosphate, 0.5 part of makrolon, absolute ethyl alcohol 60 parts.
The preparation method of above-mentioned varistor ceramics materials is：
(1) by carborundum, silicon nitride, kaolin, tin ash, vanadic anhydride, boron carbide, monazite, ball shaped nano dioxy Change titanium and absolute ethyl alcohol mixing, be put into ball grinder ball milling 4 hours under rotating speed 800r/min；
(2) it is put into baking oven, is dried at 100 DEG C of temperature；
(3) polyanion cellulose, potassium hyperchlorate, beeswax, orthophosphate and makrolon are added, double spiral shells are added after being well mixed Extruding pelletization is carried out in bar extruder, each area's temperature is 260 DEG C, screw speed 40r/min；
(4) add in single shaft hydraulic press and the dumping at 600 DEG C of temperature is pressed into after disk under pressure 2.5MPa；
(5) it is put into sintering furnace to sinter 2 hours at 1300 DEG C of temperature and produces, wherein, heating rate is 5 DEG C/min.
Comparative example 2
The present embodiment and the difference of embodiment 1 are not containing kaolin and monazite.Specifically：
A kind of varistor ceramics materials, it is prepared by following component with parts by weight：3 parts of carborundum, 3 parts of silicon nitride, dioxy Change 50 parts of tin, 0.1 part of vanadic anhydride, 1 part of boron carbide, 1 part of strontium carbonate, 1 part of manganese carbonate, 3 parts of spherical nano TiO 2, poly- 0.5 part of anionic cellulose, 0.2 part of potassium hyperchlorate, 0.2 part of beeswax, 1 part of orthophosphate, 0.5 part of makrolon, absolute ethyl alcohol 60 parts.
The preparation method of above-mentioned varistor ceramics materials is：
(1) by carborundum, silicon nitride, tin ash, vanadic anhydride, boron carbide, strontium carbonate, manganese carbonate, ball shaped nano dioxy Change titanium and absolute ethyl alcohol mixing, be put into ball grinder ball milling 4 hours under rotating speed 800r/min；
(2) it is put into baking oven, is dried at 100 DEG C of temperature；
(3) polyanion cellulose, potassium hyperchlorate, beeswax, orthophosphate and makrolon are added, double spiral shells are added after being well mixed Extruding pelletization is carried out in bar extruder, each area's temperature is 260 DEG C, screw speed 40r/min；
(4) add in single shaft hydraulic press and the dumping at 600 DEG C of temperature is pressed into after disk under pressure 2.5MPa；
(5) it is put into sintering furnace to sinter 2 hours at 1300 DEG C of temperature and produces, wherein, heating rate is 5 DEG C/min.Comparative example 1
The present embodiment and the difference of embodiment 1 are not containing spherical nano TiO 2.Specifically：
A kind of varistor ceramics materials, it is prepared by following component with parts by weight：3 parts of carborundum, 3 parts of silicon nitride, kaolinite It is 3 parts of soil, 50 parts of tin ash, 0.1 part of vanadic anhydride, 1 part of boron carbide, 1 part of strontium carbonate, 1 part of manganese carbonate, 1 part of monazite, poly- 0.5 part of anionic cellulose, 0.2 part of potassium hyperchlorate, 0.2 part of beeswax, 1 part of orthophosphate, 0.5 part of makrolon, absolute ethyl alcohol 60 parts.
The preparation method of above-mentioned varistor ceramics materials is：
(1) by carborundum, silicon nitride, kaolin, tin ash, vanadic anhydride, boron carbide, strontium carbonate, manganese carbonate, monazite Mixed with absolute ethyl alcohol, be put into ball grinder ball milling 4 hours under rotating speed 800r/min；
(2) it is put into baking oven, is dried at 100 DEG C of temperature；
(3) polyanion cellulose, potassium hyperchlorate, beeswax, orthophosphate and makrolon are added, double spiral shells are added after being well mixed Extruding pelletization is carried out in bar extruder, each area's temperature is 260 DEG C, screw speed 40r/min；
(4) add in single shaft hydraulic press and the dumping at 600 DEG C of temperature is pressed into after disk under pressure 2.5MPa；
(5) it is put into sintering furnace to sinter 2 hours at 1300 DEG C of temperature and produces, wherein, heating rate is 5 DEG C/min.The present invention Varistor ceramics materials leakage current it is very low, it is minimum be only 1.10 μ A/cm2, its nonlinear factor is up to 33, non-linear property Can be good, consistency is high.
The partial properties index of the varistor ceramics materials of table 1
Name of product Leakage current (μ A/cm2) Nonlinear factor
Embodiment 1 1.17 32
Embodiment 2 1.15 33
Embodiment 3 1.10 33
Embodiment 4 1.12 32
Embodiment 5 1.15 32
Comparative example 1 1.53 27
Comparative example 2 1.23 22
Comparative example 3 1.46 29

Claims (7)

  1. A kind of 1. varistor ceramics materials, it is characterised in that：It is prepared by following component with parts by weight：
  2. A kind of 2. varistor ceramics materials according to claim 1, it is characterised in that：By following component with parts by weight system It is standby to form：
  3. A kind of 3. preparation method of varistor ceramics materials described in any one of claim 1 to 2, it is characterised in that：Including Following steps：
    (1) by carborundum, silicon nitride, kaolin, tin ash, vanadic anhydride, boron carbide, strontium carbonate, manganese carbonate, solitary Stone, spherical nano TiO 2 and absolute ethyl alcohol mixing, it is small to be put into ball grinder the ball milling 4-5 under rotating speed 800-900r/min When；
    (2) it is put into baking oven, is dried at 100-110 DEG C of temperature；
    (3) polyanion cellulose, potassium hyperchlorate, beeswax, orthophosphate and makrolon are added, double spiral shells are added after being well mixed Extruding pelletization is carried out in bar extruder, each area's temperature is 260-280 DEG C, screw speed 40-60r/min；
    (4) add in single shaft hydraulic press and the dumping at 600-700 DEG C of temperature is pressed into after disk under pressure 2.5-3MPa；
    (5) being put into sintering furnace the sintering 2-2.5 hours at 1300-1400 DEG C of temperature produces, wherein, heating rate is 5-7 DEG C/ min。
  4. A kind of 4. preparation method of varistor ceramics materials according to claim 3, it is characterised in that：The step (1) rotating speed is 850r/min in, and Ball-milling Time is 4.5 hours.
  5. A kind of 5. preparation method of varistor ceramics materials according to claim 3, it is characterised in that：The step (3) Zhong Ge areas temperature is 270 DEG C, screw speed 50r/min.
  6. A kind of 6. preparation method of varistor ceramics materials according to claim 3, it is characterised in that：The step (4) pressure is 2.6-2.8MPa in, and dump temperature is 650 DEG C.
  7. A kind of 7. preparation method of varistor ceramics materials according to claim 3, it is characterised in that：The step (5) sintering temperature is 1350 DEG C in, and heating rate is 6 DEG C/min.
CN201711005284.3A 2017-10-23 2017-10-23 A kind of varistor ceramics materials and preparation method thereof Withdrawn CN107746270A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109534821A (en) * 2018-12-28 2019-03-29 西安西电避雷器有限责任公司 A kind of resistor disc and preparation method thereof
CN110357634A (en) * 2019-07-10 2019-10-22 中国科学院上海硅酸盐研究所 A kind of application of boron carbide ceramics as pressure-sensitive ceramic material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109534821A (en) * 2018-12-28 2019-03-29 西安西电避雷器有限责任公司 A kind of resistor disc and preparation method thereof
CN109534821B (en) * 2018-12-28 2021-06-25 西安西电避雷器有限责任公司 Resistor disc and preparation method thereof
CN110357634A (en) * 2019-07-10 2019-10-22 中国科学院上海硅酸盐研究所 A kind of application of boron carbide ceramics as pressure-sensitive ceramic material
CN110357634B (en) * 2019-07-10 2021-08-31 中国科学院上海硅酸盐研究所 Application of boron carbide ceramic as voltage-sensitive ceramic material

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Application publication date: 20180302