CN109761589A - A kind of ceramics thermal battery inertia block ring and preparation method thereof - Google Patents
A kind of ceramics thermal battery inertia block ring and preparation method thereof Download PDFInfo
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- CN109761589A CN109761589A CN201910195923.XA CN201910195923A CN109761589A CN 109761589 A CN109761589 A CN 109761589A CN 201910195923 A CN201910195923 A CN 201910195923A CN 109761589 A CN109761589 A CN 109761589A
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- block ring
- inertia block
- thermal battery
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Abstract
The present invention relates to a kind of ceramic thermal battery inertia block rings, belong to thermal cell technical field, are passed through by mass percentage by following raw material and be sintered, ceramic powder 90%-99%, binder 0.9%-5%, auxiliary agent 0.1%-5%.The ceramic powder is one of aluminium oxide, zirconium oxide or carbide ceramics material or a variety of；The binder is one of PVA, gum arabic or peach gum or a variety of；The auxiliary agent is one of boron oxide, silica, magnesia, calcium oxide and low melting point ceramic powder or a variety of, and the water is deionized water.The present invention overcomes Conventional thermoelectric pond inertia block ring there are the problem of, a kind of ceramic thermal battery inertia block ring is provided, the block ring of this method preparation has the characteristics that high stable, low cost, nonhazardous, consistency are good, thermal cell is avoided to occur the drawback of short circuit at work, thermal cell production efficiency is improved, with good application prospect.
Description
Technical field
The present invention relates to thermal cell technical field, specially a kind of preparation side of ceramic thermal battery inertia block ring
Method.
Background technique
Thermal cell is that the heating system formed with priming system and its medicament adds nonconducting solid state salt electrolyte
Heat fusing enters a kind of deposit chemical cell of working condition at ionic conductor.Thermal cell is short with activationary time, exports
The advantages that power is big, specific energy is high, use temperature range is wide, period of storage is long, thus be widely used in various weapons, especially
Be in big, medium caliber shell, shed bullet etc. in be even more to play a great role.Thermal cell is that guided missile, nuclear weapon, common ammunition etc. are existing
For the power supply that chemical weapons device is very ideal, highly important position is occupied in Military Power.
Traditional thermal cell uses asbestos or asbestos~magnesium oxide material with inertia block ring.At work due to thermal cell
Inside battery electrolyte fused salt is in a molten state, pile center maximum temperature up to 500 DEG C~600 DEG C, inertia block ring
It is to prevent thermal cell electrolyte fused salt in the course of work of high environmental forces from overflowing (such as 18000 revs/min), causes short circuit,
Play the role of protecting pile.Therefore, the requirement heat resistance to block ring, resistant to chemical etching, good electrical insulating property.
Traditional inertia block ring needs are manually prepared into asbestos~magnesia paper or existing asbestos paper are passed through punching
Press is prepared into the inertia block ring for meeting demand.Currently, the inertia block ring manually prepared is there are many drawbacks, asbestos paper exists
The high labor cost consumed in preparation process, the block ring stability after punching press is poor, and rejection rate is higher, the contraction after high temperature sintering
Rate is big, furthermore material asbestos itself and have certain toxicity, endanger the health of operation employee.
Summary of the invention
The purpose of the present invention Conventional thermoelectric pond inertia block ring there are aiming at the problem that, a kind of ceramic inertia is provided
The preparation method of block ring, the block ring of preparation method production are good etc. with high stable, low cost, nonhazardous, consistency
Feature, while ceramic material itself has many advantages such as very high mechanical characteristic, thermal characteristics, electrical characteristics and chemical characteristic again.
A kind of ceramics thermal battery inertia block ring, is passed through by mass percentage by following raw material and is sintered, ceramics
Powder ceramic powder 90%-99%, binder 0.9%-5%, auxiliary agent 0.1%-5%.
Preferably, a kind of above-mentioned ceramic thermal battery inertia block ring, the ceramic powder are aluminium oxide, oxidation
One of zirconium or carbide ceramics material are a variety of；The binder be one of PVA, gum arabic or peach gum or
It is a variety of；The auxiliary agent is one of boron oxide, silica, magnesia, calcium oxide and low melting point ceramic powder or a variety of.
Preferably, above-mentioned a kind of ceramic thermal battery inertia block ring, the granularity of the ceramic powder and auxiliary agent
It is 20-50 μm.
A kind of preparation method of ceramics thermal battery inertia block ring,
1) it mixes: weighing ceramic powder, binder according to above-mentioned mass percent, auxiliary agent is uniformly mixed；
2) powder processed: ceramic slurry is subjected to mist projection granulating in the spray drying tower, obtains ceramic powder；
3) die-filling: ceramic powder being put into mold, and mold is placed on jolt ramming on shaking platform, puts pressure after jolt ramming well
Head；
4) it is compacted: mold being placed on press after pressurizeing simultaneously pressure maintaining, ceramic body is obtained after demoulding；
5) dumping: ceramic body is put into heating furnace, is warming up to 300~700 DEG C, keeps 6-12h；
6) it is sintered: heating furnace being warming up to 1300~1700 DEG C, heat preservation 1~take out afterwards for 24 hours, up to target after furnace cooling
Product.
Preferably, the preparation method of above-mentioned a kind of ceramic thermal battery inertia block ring, it is prepared in step 2)
The granularity of ceramic powder is 100~500 mesh.
Preferably, preparation method of the above-mentioned a kind of ceramic thermal battery with inertia block ring, step 4) specifically: by mould
Tool, which is placed on press, is forced into 5~25MPa, and after 1~100min of pressure maintaining, ceramic body is obtained after demoulding.
Preferably, the preparation method of above-mentioned a kind of ceramic thermal battery inertia block ring, the middle speed to heat up of step 5)
Rate are as follows: 0.1~20 DEG C/min.
Preferably, the preparation method of above-mentioned a kind of ceramic thermal battery inertia block ring, the middle speed to heat up of step 6)
Rate are as follows: 1~20 DEG C/min.
The beneficial effects of the present invention are:
The present invention using ceramic ring prepared by high temperature resistant inorganic method as wrapped in thermal cell attached molten salt electrolyte layer and
Negative electrode layer has the advantages that the features such as high stable, low cost, nonhazardous, good consistency.
Ceramic material used in the present invention is that rigidity is best in engineering material, one of the highest material of hardness, and hardness is big
Mostly in 1500HV or more, furthermore ceramics also have very high compression strength；
Ceramic material used in the present invention generally has high fusing point (mostly at 2000 DEG C or more), and has at high temperature
Fabulous chemical stability, ceramic or good heat-barrier material slow down the heat loss of electrolyte fused salt at work；Together
When ceramics linear expansion coefficient it is lower than traditional asbestos ring, when the temperature varies, ceramic ring size does not change, and has
Good dimensional stability；
Inertia block ring prepared by the present invention has good electrical insulating property, and insulation resistance is up to 500M Ω or more；
Inertia block ring prepared by the present invention is not oxidizable at high temperature, and has to acid, alkali, salt good anticorrosive
Ability；
Material according to the present invention is convenient for industrial production, and preparation process is simple, high reliablity, is conducive to be engineered.
Inertia block ring outer diameter prepared by the present invention is 6 ± 0.2~Ф of Ф, 102 ± 0.2mm, internal diameter Ф
5 ± 0.2~Ф, 98 ± 0.2mm, with a thickness of 0.2 ± 0.02mm~2.4 ± 0.02mm.
Detailed description of the invention
Fig. 1 is the top view of inertia block ring prepared by embodiment 1
Fig. 2 is the side view of inertia block ring prepared by embodiment 1
Specific embodiment
It is only the preferred embodiment of the present invention below, protection scope of the present invention is not limited to reality shown in this article
Example is applied, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that being led for this technology
For the those of ordinary skill in domain, several modifications and retouching without departing from the principles of the present invention also should be regarded as of the invention
Protection scope.
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1
1) mix: taking granularity is 20 μm of aluminium oxide ceramics powder 90kg, PVA binder 4kg, the oxidation that granularity is 20 μm
Magnesia 0.5kg, the calcium oxide 0.5kg that granularity is 20 μm that boron 2kg, granularity are 20 μm are mixed with 55kg deionized water, are being rolled
It rolls on thick stick and is uniformly mixed for 24 hours, keeping mixing temperature is 40 DEG C hereinafter, obtaining ceramic slurry.
2) powder processed: carrying out mist projection granulating for ceramic slurry in the spray drying tower, sets spray gun pressure as 0.04MPa, heat
Temperature of inlet air is 300 DEG C, and hot air outlet temperature is 110 DEG C, and control ceramic slurry flow is 2.0L/min.After being granulated
Ceramic Balls powder carry out three times except 100 mesh and 200 meshes are crossed respectively after iron through dry type iron remover, obtaining granularity is 100~200
Purpose ceramic powder.
3) die-filling: 0.39g ceramic powder is put into type chamber internal diameter 27.5mm, the mold of pressure head outer diameter 23.8mm
In, and mold is placed on jolt ramming on shaking platform, pressure head is put well after jolt ramming.
4) it is compacted: mold being placed on press and is forced into 8MPa, after pressure maintaining 2min, demoulding obtains ceramic body, at this time base
Body thickness is about 1.17mm.
5) dumping: ceramic body is put into heating furnace, is warming up to 400 DEG C with the heating rate of 5 DEG C/min, dumping 10h.
6) it is sintered: heating furnace being warming up to 1350 DEG C with the heating rate of 5 DEG C/min, keeps the temperature 2h.
After furnace cooling, ceramic inert block ring is obtained, this product outer diameter is 23.9 ± 0.1mm of Ф, internal diameter
It is highly 1.0 ± 0.1mm for 20.9 ± 0.1mm.
Inertia block ring prepared by embodiment 1 is ring-type, for wrapping attached molten salt electrolyte layer and negative electrode layer.
Embodiment 2
1) mix: taking granularity is 20 μm of aluminium oxide ceramics powder 92.5kg, PVA binder 5kg, the oxygen that granularity is 20 μm
Change boron 1kg, the magnesia 0.5kg that granularity is 20 μm, the calcium oxide 0.5kg that granularity is 20 μm to mix with 50kg deionized water,
It rolls on rolling bar and is uniformly mixed for 24 hours, keeping mixing temperature is 40 DEG C hereinafter, obtaining ceramic slurry.
2) powder processed: carrying out mist projection granulating for ceramic slurry in the spray drying tower, sets spray gun pressure as 0.04MPa, heat
Temperature of inlet air is 300 DEG C, and hot air outlet temperature is 110 DEG C, and control ceramic slurry flow is 2.0L/min.After being granulated
Ceramic Balls powder carry out three times except 100 mesh and 200 meshes are crossed respectively after iron through dry type iron remover, obtaining granularity is 100~200
Purpose ceramic powder.
3) die-filling: 0.60g ceramic powder is put into type chamber internal diameter 27.5mm, the mold of pressure head outer diameter 23.8mm
In, and mold is placed on jolt ramming on shaking platform, pressure head is put well after jolt ramming.
4) it is compacted: mold being placed on press and is forced into 10MPa, after pressure maintaining 2min, demoulding obtains ceramic body, at this time base
Body thickness is about 2.05mm.
5) dumping: ceramic body is put into heating furnace, is warming up to 400 DEG C with the heating rate of 5 DEG C/min, dumping 10h.
6) it is sintered: heating furnace being warming up to 1350 DEG C with the heating rate of 5 DEG C/min, keeps the temperature 2h.
After furnace cooling, ceramic inert block ring is obtained, this product outer diameter is 23.9 ± 0.1mm of Ф, internal diameter
It is highly 1.4 ± 0.1mm for 20.9 ± 0.1mm.
Inertia block ring prepared by embodiment 2 is ring-type, for wrapping attached molten salt electrolyte layer and negative electrode layer.
The inertia block ring prepared by process above is applied in thermal cell production, simplifies traditional inertia block ring
Preparation complicated technology.It is tested in practical application thermal cell, does not occur the electrolyte phenomenon of leakage, effectively inhibit electrolyte
Flowing, while material itself has the characteristics that high stable, low cost, nonhazardous, consistency are good, has preferable application field.
Claims (8)
1. a kind of ceramics thermal battery inertia block ring, which is characterized in that pass through sintering by mass percentage by following raw material
It forms, ceramic powder 90%-99%, binder 0.9%-5%, auxiliary agent 0.1%-5%.
2. a kind of ceramic thermal battery inertia block ring according to claim 1, which is characterized in that the ceramic powder
Material is one of aluminium oxide, zirconium oxide or carbide ceramics material or a variety of；The binder is PVA, gum arabic
Or one of peach gum or a variety of；The auxiliary agent is boron oxide, silica, magnesia, calcium oxide and low melting point ceramic powder
One of or it is a variety of.
3. a kind of ceramic thermal battery inertia block ring according to claim 1, which is characterized in that the ceramic powder
The granularity of material and auxiliary agent is 20-50 μm.
4. a kind of preparation method of ceramics thermal battery inertia block ring described in claim 1-3, which is characterized in that
1) mix: mass percent described in accordance with the claim 1 weighs ceramic powder, binder, and auxiliary agent is uniformly mixed；
2) powder processed: ceramic slurry is subjected to mist projection granulating in the spray drying tower, obtains ceramic powder；
3) die-filling: ceramic powder being put into mold, and mold is placed on jolt ramming on shaking platform, puts pressure head well after jolt ramming；
4) it is compacted: mold being placed on press after pressurizeing simultaneously pressure maintaining, ceramic body is obtained after demoulding；
5) dumping: ceramic body is put into heating furnace, is warming up to 300~700 DEG C, keeps 6-12h；
6) it is sintered: heating furnace being warming up to 1300~1700 DEG C, heat preservation 1~take out afterwards for 24 hours produces after furnace cooling up to target
Object.
5. a kind of preparation method of ceramic thermal battery inertia block ring according to claim 4, which is characterized in that step
It is rapid 2) in the granularity of prepared ceramic powder be 100~500 mesh.
6. a kind of preparation method of ceramic thermal battery inertia block ring according to claim 4, which is characterized in that step
It is rapid 4) specifically: mold is placed on press and is forced into 5~25MPa, after 1~100min of pressure maintaining, ceramic body is obtained after demoulding.
7. a kind of preparation method of ceramic thermal battery inertia block ring according to claim 4, which is characterized in that step
Rapid 5) the middle rate to heat up are as follows: 0.1~20 DEG C/min.
8. a kind of preparation method of ceramic thermal battery inertia block ring according to claim 4, which is characterized in that step
Rapid 6) the middle rate to heat up are as follows: 1~20 DEG C/min.
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| CN101867070A (en) * | 2009-04-15 | 2010-10-20 | 比亚迪股份有限公司 | Lithium ion battery and preparation method thereof |
| CN102086118A (en) * | 2010-12-10 | 2011-06-08 | 天津市中环电陶有限公司 | Aluminum oxide ceramic prone to Mo-Mn metallization and preparation method of aluminum oxide ceramic |
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Address after: 110034 No. 1-8, Yangshan Road, Huanggu District, Shenyang City, Liaoning Province Applicant after: SHENYANG JUNWEI NEW ENERGY TECHNOLOGY Co.,Ltd. Applicant after: Shenyang jiaqishi network energy Co.,Ltd. Address before: 110034 No. 1-8, Yangshan Road, Huanggu District, Shenyang City, Liaoning Province Applicant before: SHENYANG JUNWEI NEW ENERGY TECHNOLOGY Co.,Ltd. Applicant before: SHENYANG CHONGHUA ELECTRONIC TECHNOLOGY Co.,Ltd. |
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