CN107879722A - Small electronic ceramics of a kind of rate of change of capacitance and preparation method thereof - Google Patents

Small electronic ceramics of a kind of rate of change of capacitance and preparation method thereof Download PDF

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CN107879722A
CN107879722A CN201711224934.3A CN201711224934A CN107879722A CN 107879722 A CN107879722 A CN 107879722A CN 201711224934 A CN201711224934 A CN 201711224934A CN 107879722 A CN107879722 A CN 107879722A
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parts
rate
change
electronic ceramics
small electronic
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柴文权
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Anhui State Run Drying Equipment Co Ltd
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Anhui State Run Drying Equipment Co Ltd
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Abstract

The invention discloses small electronic ceramics of a kind of rate of change of capacitance and preparation method thereof, it is related to technical field of electronic materials, the electronic ceramics includes following raw material：Modified clay, titanium dioxide, zirconium silicate, yittrium oxide, tungsten oxide, carborundum, mica powder, dimethyl silicone polymer, aluminium dihydrogen phosphate, praseodymium oxide, calcium stannate, magnesium titanate and Ludox.Its preparation method is that raw material first is made into powder；Add water to mix and mix to obtain high fluidity slurry；Then by slurry inject mould in curing and demolding it is dry biscuit；Finally by being heated to biscuit, the processing such as sinter.The electronic ceramics of the present invention prepares simple and convenient, low raw-material cost, has good heat-resisting quantity, and with the rise of temperature, rate of change of capacitance is small and stablizes, and dielectric loss is low, service life length, suitable popularization and application.

Description

Small electronic ceramics of a kind of rate of change of capacitance and preparation method thereof
Technical field
The present invention relates to technical field of electronic materials, and in particular to a kind of small electronic ceramics of rate of change of capacitance and its preparation Method.
Background technology
One kind that electron ceramic material is primarily referred to as has the ceramics of the functions such as electromagnetism, its dielectric properties and electric conductivity Adjustable range is wider, is one of material most active in special ceramic material, is widely paid close attention to by people.It can be applied in electricity Son, communicate, automatically control, information computer, automobile, among the various fields such as aviation, there is significant social benefit and economy Benefit.The development of Current electronic information is more and more rapider, the also more and more higher of the requirement to electronic component, miniaturization, filming, Multi-functional grade turns into the direction of future development, and electronic ceramics product has the problem of heat-resisting quantity deficiency at present, causes its Jie Electrical loss is big, and rate of change of capacitance is big and unstable, has a strong impact on the use of electronic ceramics product, therefore, it is necessary to improve.
The content of the invention
For problems of the prior art, the invention provides a kind of small electronic ceramics of rate of change of capacitance and its system Preparation Method, this kind of electronic ceramics prepare simple and convenient, low raw-material cost, have good heat-resisting quantity, with the rise of temperature, Rate of change of capacitance is small and stablizes, and dielectric loss is low, service life length, suitable popularization and application.
In order to achieve the above object, the present invention is achieved through the following technical solutions：
A kind of small electronic ceramics of rate of change of capacitance, including following raw material by weight：Modified clay 30-50 parts, Titanium dioxide 15-25 parts, zirconium silicate 10-20 parts, yittrium oxide 8-12 parts, tungsten oxide 4-8 parts, carborundum 1-5 parts, mica powder 1-3 Part, dimethyl silicone polymer 6-10 parts, aluminium dihydrogen phosphate 8-12 parts, praseodymium oxide 3-7 parts, calcium stannate 2-6 parts, magnesium titanate 3-5 parts With Ludox 4-8 parts；
Above-mentioned modification clay is made by following steps：Clay is first calcined 2-3h at 380-420 DEG C, then uses 8- 12% hydrochloric acid solution soaks 1-2h, then is washed with deionized to neutrality, drying, adds afterwards equivalent to clay weight 2-4% Sldium lauryl sulfate, the chlorinated paraffin equivalent to clay weight 1-3%, the polyisobutene equivalent to clay weight 2-4% and It is agitated to mix, dry, being crushed to powder of the particle diameter less than or equal to 500 μm i.e. equivalent to clay weight 3-5% magnesia powders .
Further, above-mentioned electronic ceramics includes following raw material by weight：Modified 40 parts of clay, titanium dioxide 20 parts, 15 parts of zirconium silicate, 10 parts of yittrium oxide, 6 parts of tungsten oxide, 3 parts of carborundum, 2 parts of mica powder, 8 parts of dimethyl silicone polymer, phosphorus 6 parts of 10 parts of acid dihydride aluminium, 5 parts of praseodymium oxide, 4 parts of calcium stannate, 4 parts of magnesium titanate and Ludox.
A kind of preparation method of the small electronic ceramics of above-mentioned rate of change of capacitance, is followed the steps below:
(1) raw material is weighed by weight ratio, and all raw materials are mixed and made into powder；
(2) its weight 20-30% magnetized water is added in the powder, stirs and evenly mixs to obtain high fluidity slurry；
(3) slurry is injected in mould, mould is then positioned over curing process in air drying cabinet, curing and demolding obtains To wet base, wet base is placed in vacuum drying chamber and is dried to obtain biscuit；
(4) biscuit is heated in ventilating air stove, is cooled to room temperature with air furnace afterwards；
(5) biscuit after step (4) processing is placed in sintering furnace and be sintered, be finally air-cooled to room temperature i.e. Can.
Further, in step (1), the raw material is to obtain powder to particle diameter≤1mm by ball mill grinding.
Further, in step (2), the viscosity of the high fluidity slurry is 70-80mPas.
Further, in step (3), the curing process is to be warming up to 360-420 with 20-30 DEG C/min heating rates DEG C, 40-50min is incubated afterwards to be terminated.
Further, in step (4), the heating is that furnace temperature first is risen into 180 DEG C~220 DEG C, then is incubated 20- 30min, it is warming up to 380 DEG C~460 DEG C again afterwards, insulation 30-40min terminates.
Further, in step (5), the sintering processes are that furnace temperature first is risen into 580 DEG C~720 DEG C, are incubated 25- 35min, then 740 DEG C~980 DEG C are warming up to, insulation 40-60min terminates.
The present invention has following beneficial effect：
(1) electrotechnical ceramics of the invention is prepared simple and convenient, and the technological process of production is safe, easy, reliable, and it processes raw material Wide material sources, low production cost, suitable large-scale mass production；
(2) electrotechnical ceramics finished-product material of the invention is by by niobium oxide strontium barium, modified diatom powder and potassium antimony tartrate etc. The addition of raw material, and their batch mixings, ball milling, slurrying, solidification, heat treatment, sinter molding etc. are operated so as to obtain, this kind of electricity The ceramic material of son possesses preferable temperature stabilization performance, high temperature resistant, corrosion-resistant, its compression strength and the high service life length of tensile strength Long, application field is extensive, has wide market prospects；
(3) insulaion resistance of electrotechnical ceramics material of the invention is big, percentage of capacitance variation with temperature is small, elongation at break is high, tool Its insulaion resistance of body is 1.4-1.6 × 1010Ω cm, percentage of capacitance variation with temperature are 3-5ppm/ DEG C, elongation at break 150- 170%, dielectric loss is small (dielectric loss is less than 0.5%).
Embodiment
The embodiment of the present invention is further described with reference to embodiment, following examples are only used for more Clearly demonstrate technical scheme, and can not be limited the scope of the invention with this.
Embodiment 1
A kind of small electronic ceramics of rate of change of capacitance, following raw material is weighed, it is as shown in table 1 below：
Table 1
Component Weight (kg)
Modified clay 30kg
Titanium dioxide 15kg
Zirconium silicate 10kg
Yittrium oxide 8kg
Tungsten oxide 4kg
Carborundum 1kg
Mica powder 1kg
Dimethyl silicone polymer 6kg
Aluminium dihydrogen phosphate 8kg
Praseodymium oxide 3kg
Calcium stannate 2kg
Magnesium titanate 3kg
Ludox 4kg
Above-mentioned modification clay is made by following steps：Clay is first calcined 2h at 380 DEG C, then it is molten with 8% hydrochloric acid Liquid soaks 1h, then is washed with deionized to neutrality, drying, add afterwards the sldium lauryl sulfate equivalent to clay weight 2%, Chlorinated paraffin equivalent to clay weight 1%, the polyisobutene equivalent to clay weight 2% and equivalent to the oxygen of clay weight 3% Change magnesium powder, it is agitated to mix, dry, being crushed to changing needed for the i.e. obtained raw material of the present invention of powder of the particle diameter less than or equal to 500 μm Property clay.
A kind of preparation method of the small electronic ceramics of above-mentioned rate of change of capacitance, is followed the steps below:
(1) the above-mentioned all raw materials weighed are mixed by ball mill grinding to particle diameter≤1mm, obtains powder；
(2) magnetized water of its weight 20% is added into above-mentioned powder again, stir and evenly mix viscosity is 70mPas slurries；
(3) slurry is injected in mould after, mould is positioned in air drying cabinet with 20 DEG C/min heating rate liters Temperature is incubated 40min and terminated, above-mentioned curing process is stripped after terminating and obtains wet base, and wet base is placed in into vacuum drying afterwards to 360 DEG C It is dried in case to obtain biscuit；
(4) by biscuit in ventilating air stove, furnace temperature is first risen to 180 DEG C, then is incubated 20min, is warming up to 380 again afterwards DEG C, insulation 30min terminates, and is cooled to room temperature with air furnace afterwards；
(5) biscuit after step (4) processing is placed in sintering furnace, furnace temperature is first risen to 580 DEG C, be incubated 25min, then 740 DEG C are warming up to, insulation 40min terminates, and is finally air-cooled to the small electronic ceramics of the rate of change of capacitance of the i.e. obtained present invention of room temperature.
Embodiment 2
A kind of small electronic ceramics of rate of change of capacitance, following raw material is weighed, it is as shown in table 2 below：
Table 2
Component Weight (kg)
Modified clay 40kg
Titanium dioxide 20kg
Zirconium silicate 15kg
Yittrium oxide 10kg
Tungsten oxide 6kg
Carborundum 3kg
Mica powder 2kg
Dimethyl silicone polymer 8kg
Aluminium dihydrogen phosphate 10kg
Praseodymium oxide 5kg
Calcium stannate 4kg
Magnesium titanate 4kg
Ludox 6kg
Above-mentioned modification clay is made by following steps：Clay is first calcined 2.5h at 400 DEG C, then with 10% hydrochloric acid Solution soaks 1.5h, then is washed with deionized to neutrality, drying, adds the laruyl alcohol sulphur equivalent to clay weight 3% afterwards Sour sodium, the chlorinated paraffin equivalent to clay weight 2%, the polyisobutene equivalent to clay weight 3% and equivalent to clay weight 4% magnesia powder, it is agitated to mix, dry, being crushed to needed for the i.e. obtained raw material of the present invention of powder of the particle diameter less than or equal to 500 μm Modification clay.
A kind of preparation method of the small electronic ceramics of above-mentioned rate of change of capacitance, is followed the steps below:
(1) the above-mentioned all raw materials weighed are mixed by ball mill grinding to particle diameter≤1mm, obtains powder；
(2) magnetized water of its weight 25% is added into above-mentioned powder again, stir and evenly mix viscosity is 75mPas slurries；
(3) slurry is injected in mould after, mould is positioned in air drying cabinet with 25 DEG C/min heating rate liters Temperature is incubated 45min and terminated, above-mentioned curing process is stripped after terminating and obtains wet base, and wet base is placed in into vacuum drying afterwards to 390 DEG C It is dried in case to obtain biscuit；
(4) by biscuit in ventilating air stove, furnace temperature is first risen to 200 DEG C, then is incubated 25min, is warming up to 420 again afterwards DEG C, insulation 35min terminates, and is cooled to room temperature with air furnace afterwards；
(5) biscuit after step (4) processing is placed in sintering furnace, furnace temperature is first risen to 650 DEG C, be incubated 30min, then 850 DEG C are warming up to, insulation 50min terminates, and is finally air-cooled to the small electronic ceramics of the rate of change of capacitance of the i.e. obtained present invention of room temperature.
Embodiment 3
A kind of small electronic ceramics of rate of change of capacitance, following raw material is weighed, it is as shown in table 3 below：
Table 3
Above-mentioned modification clay is made by following steps：Clay is first calcined 3h at 420 DEG C, then it is molten with 12% hydrochloric acid Liquid soaks 2h, then is washed with deionized to neutrality, drying, add afterwards the sldium lauryl sulfate equivalent to clay weight 4%, Chlorinated paraffin equivalent to clay weight 3%, the polyisobutene equivalent to clay weight 4% and equivalent to the oxygen of clay weight 5% Change magnesium powder, it is agitated to mix, dry, being crushed to changing needed for the i.e. obtained raw material of the present invention of powder of the particle diameter less than or equal to 500 μm Property clay.
A kind of preparation method of the small electronic ceramics of above-mentioned rate of change of capacitance, is followed the steps below:
(1) the above-mentioned all raw materials weighed are mixed by ball mill grinding to particle diameter≤1mm, obtains powder；
(2) magnetized water of its weight 30% is added into above-mentioned powder again, stir and evenly mix viscosity is 80mPas slurries；
(3) slurry is injected in mould after, mould is positioned in air drying cabinet with 30 DEG C/min heating rate liters Temperature is incubated 50min and terminated, above-mentioned curing process is stripped after terminating and obtains wet base, and wet base is placed in into vacuum drying afterwards to 420 DEG C It is dried in case to obtain biscuit；
(4) by biscuit in ventilating air stove, furnace temperature is first risen to 220 DEG C, then is incubated 30min, is warming up to 460 again afterwards DEG C, insulation 40min terminates, and is cooled to room temperature with air furnace afterwards；
(5) biscuit after step (4) processing is placed in sintering furnace, furnace temperature is first risen to 720 DEG C, be incubated 35min, then 980 DEG C are warming up to, insulation 60min terminates, and is finally air-cooled to the small electronic ceramics of the rate of change of capacitance of the i.e. obtained present invention of room temperature.
Performance detection
Heat-resisting quantity, insulaion resistance, percentage of capacitance variation with temperature, disconnected is carried out to electronic ceramics made from above-described embodiment 1-3 The detection of elongation and dielectric loss correlated performance is split, is recorded in table 4 below；
Table 4
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, although with reference to foregoing reality Apply example the present invention is described in detail, for those skilled in the art, it still can be to foregoing each implementation Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic.All essences in the present invention God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.

Claims (8)

1. the small electronic ceramics of a kind of rate of change of capacitance, it is characterised in that including following raw material by weight：Modified clay 30-50 parts, titanium dioxide 15-25 parts, zirconium silicate 10-20 parts, yittrium oxide 8-12 parts, tungsten oxide 4-8 parts, carborundum 1-5 parts, cloud Female powder 1-3 parts, dimethyl silicone polymer 6-10 parts, aluminium dihydrogen phosphate 8-12 parts, praseodymium oxide 3-7 parts, calcium stannate 2-6 parts, metatitanic acid Magnesium 3-5 parts and Ludox 4-8 parts；
The modified clay is made by following steps：Clay is first calcined 2-3h at 380-420 DEG C, then with 8-12% hydrochloric acid Solution soaks 1-2h, then is washed with deionized to neutrality, drying, adds the laruyl alcohol equivalent to clay weight 2-4% afterwards Sodium sulphate, the chlorinated paraffin equivalent to clay weight 1-3%, the polyisobutene equivalent to clay weight 2-4% and equivalent to pottery Native weight 3-5% magnesia powders, it is agitated to mix, dry, being crushed to particle diameter and produced less than or equal to 500 μm of powder.
A kind of 2. small electronic ceramics of rate of change of capacitance according to claim 1, it is characterised in that including it is following by weight The raw material of part meter：Modified 40 parts of clay, 20 parts of titanium dioxide, 15 parts of zirconium silicate, 10 parts of yittrium oxide, 6 parts of tungsten oxide, carborundum 3 Part, 2 parts of mica powder, 8 parts of dimethyl silicone polymer, 10 parts of aluminium dihydrogen phosphate, 5 parts of praseodymium oxide, 4 parts of calcium stannate, 4 parts of magnesium titanate and 6 parts of Ludox.
3. a kind of preparation method of the small electronic ceramics of rate of change of capacitance as described in claim 1-2 any one, its feature It is, comprises the following steps:
(1) raw material is weighed by weight ratio, and all raw materials are mixed and made into powder；
(2) its weight 20-30% magnetized water is added in the powder, stirs and evenly mixs to obtain high fluidity slurry；
(3) slurry is injected in mould, mould is then positioned over curing process in air drying cabinet, curing and demolding obtains wet Base, wet base is placed in vacuum drying chamber and is dried to obtain biscuit；
(4) biscuit is heated in ventilating air stove, is cooled to room temperature with air furnace afterwards；
(5) biscuit after step (4) processing is placed in sintering furnace and be sintered, be finally air-cooled to room temperature.
4. the preparation method of the small electronic ceramics of a kind of rate of change of capacitance according to claim 3, it is characterised in that in step Suddenly in (1), the raw material is to obtain powder to particle diameter≤1mm by ball mill grinding.
5. the preparation method of the small electronic ceramics of a kind of rate of change of capacitance according to claim 3, it is characterised in that in step Suddenly in (2), the viscosity of the high fluidity slurry is 70-80mPas.
6. the preparation method of the small electronic ceramics of a kind of rate of change of capacitance according to claim 3, it is characterised in that in step Suddenly in (3), the curing process is to be warming up to 360-420 DEG C with 20-30 DEG C/min heating rates, is incubated 40-50min knots afterwards Beam.
7. the preparation method of the small electronic ceramics of a kind of rate of change of capacitance according to claim 3, it is characterised in that in step Suddenly in (4), the heating is that furnace temperature first is risen into 180 DEG C~220 DEG C, then is incubated 20-30min, is warming up to 380 again afterwards DEG C~460 DEG C, insulation 30-40min terminates.
8. the preparation method of the small electronic ceramics of a kind of rate of change of capacitance according to claim 3, it is characterised in that in step Suddenly in (5), the sintering processes are that furnace temperature first risen into 580 DEG C~720 DEG C, are incubated 25-35min, then be warming up to 740 DEG C~ 980 DEG C, insulation 40-60min terminates.
CN201711224934.3A 2017-11-29 2017-11-29 Small electronic ceramics of a kind of rate of change of capacitance and preparation method thereof Pending CN107879722A (en)

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CN112919884A (en) * 2019-12-05 2021-06-08 湖南创安防爆电器有限公司 Explosion-proof ceramic material and preparation method thereof

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CN106116535A (en) * 2016-06-22 2016-11-16 赣州艺佳兴陶瓷有限公司 A kind of multifunctional ceramic material and preparation technology thereof
CN106927785A (en) * 2017-03-24 2017-07-07 合肥羿振电力设备有限公司 A kind of manufacture craft of power equipment insulating ceramics
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CN102969153A (en) * 2012-10-31 2013-03-13 安徽拓普森电池有限责任公司 Capacitor impregnant containing modified sepiolite powder and preparation method thereof
CN106116535A (en) * 2016-06-22 2016-11-16 赣州艺佳兴陶瓷有限公司 A kind of multifunctional ceramic material and preparation technology thereof
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CN112919884A (en) * 2019-12-05 2021-06-08 湖南创安防爆电器有限公司 Explosion-proof ceramic material and preparation method thereof

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