CN107235714A - Electronic ceramics casting slurry configuration technique - Google Patents
Electronic ceramics casting slurry configuration technique Download PDFInfo
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- CN107235714A CN107235714A CN201710645913.2A CN201710645913A CN107235714A CN 107235714 A CN107235714 A CN 107235714A CN 201710645913 A CN201710645913 A CN 201710645913A CN 107235714 A CN107235714 A CN 107235714A
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- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
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- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
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- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
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- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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- 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
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- 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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
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Abstract
The present invention relates to a kind of electronic ceramics casting slurry configuration technique, the present invention is first by powder, mixing powder is uniformly made in the main solvent ball milling mixing of dispersant and half, powder is set sufficiently to be disperseed, ball milling mixing uniformity is good, then by plasticizer, binding agent and second half main solvent are mixed evenly and mixed solvent are made, plasticizer can not be adequately inserted in the double bond of binding agent, binding agent is fully plasticized, improve the plasticization effect of binding agent, mixed solvent is finally added in mixing powder abundant ball milling mixing again, casting slurry is made, utilize the electronic ceramics compact structure consolidation of the casting slurry sintering production, crystal grain is small, mechanical performance is greatly improved.
Description
Technical field
The present invention relates to electronic ceramics production technical field, and in particular to a kind of electronic ceramics casting slurry configuration technique.
Background technology
Electricity, the referred to as ceramics of magnetic property, electronic ceramics can be utilized in the electronics industry.Electronic ceramics is by table
Face, the control of crystal boundary and dimensional structure and finally obtain the ceramics with New function.In terms of the energy, household electrical appliance, automobile
Can extensive use.
At present, when electronic ceramics green compact make, typically made using the method for flow casting molding.So, casting slurry
Configuration it is very crucial, existing electronic ceramics casting slurry preparing process be by formula successively by powder, main solvent, plasticising
Agent, dispersant and binding agent are added in ball grinder and carry out ball milling, and Ball-milling Time is generally 56~72 hours.
Time-consuming for existing casting slurry preparing process, and effect is bad.Powder, main solvent, plasticizer, dispersant and bonding
Agent adds ball milling simultaneously, cause dispersant can not fully dispersed powder, powder lot dispersing is bad, powder in the casting slurry produced
Expect bad dispersibility, ball milling mixing lack of homogeneity, plasticizer can not be adequately inserted in the double bond of binding agent, and binding agent is plasticized effect
It is bad.Therefore, the electronic ceramics compact structure that existing casting slurry sintering production goes out is poor, and crystal grain is larger, bad mechanical property.
The content of the invention
In summary, in order to overcome the shortcomings of prior art problem, the invention provides a kind of electronic ceramics casting slurry
Configuration technique, it is that the main solvent ball milling mixing of powder, dispersant and half is uniformly first made into mixing powder, obtains powder
It is sufficiently scattered, then plasticizer, binding agent and second half main solvent are mixed evenly mixed solvent is made, binding agent
Fully it is plasticized, improves the plasticization effect of binding agent, mixed solvent is finally added in mixing powder abundant ball milling mixing again,
Casting slurry is made, using the electronic ceramics compact structure consolidation of the casting slurry sintering production, crystal grain is small, and mechanical performance is obtained
Very big raising.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of electronic ceramics casting slurry configuration technique, wherein：Comprise the following steps that：
A, by design proportioning weigh powder, main solvent, dispersant, binding agent and plasticizer；
B, the powder of weighing added in ball mill, then dispersant is added in ball mill, it is again that the master of half is molten afterwards
Agent is added in ball mill, starts ball mill ball milling 10-15 hours, and mixing powder is made；
C, the binding agent of weighing, plasticizer and second half main solvent be added in mixer, start mixer and mix
Until it is completely molten, mixed solvent is made；
D, the mixed solvent prepared in step c is added in ball mill, starts ball mill ball milling 20-28 hours, make ball mill
In mixing powder and the abundant ball milling mixing of mixed solvent it is uniform, electronic ceramics casting slurry configuration technique is made.
Technical scheme may also is that realization：The mixing time of mixer in described step c
For 5 ~ 7 hours.
Technical scheme may also is that realization：The Ball-milling Time of ball mill in described step b is
12 hours, the Ball-milling Time of the ball mill in described step d was 24 hours.
Technical scheme may also is that realization：Described powder includes aluminum oxide and additive, described
Aluminum oxide account for 60 ~ 75% in casting slurry, described additive include kaolin, talcum powder,
One or more in chrome green, molybdenum oxide, calcium carbonate, yittrium oxide and lanthana.
Technical scheme may also is that realization：Described main solvent is absolute ethyl alcohol, and it is starched in curtain coating
15%~25% is accounted in material.
Technical scheme may also is that realization：Described binding agent is polyvinyl butyral resin, described
Dispersant be NPE, described plasticizer is dibutyl phthalate.
Technical scheme may also is that realization：In described step b and step d ball milling temperature be 30 ~
40℃。
Beneficial effects of the present invention are：
1st, the present invention is that the main solvent ball milling mixing of powder, dispersant and half is uniformly first made into mixing powder, obtains powder
Disperse to sufficient, ball milling mixing uniformity is good, and then plasticizer, binding agent and second half main solvent are mixed evenly
Mixed solvent is made, plasticizer can not be adequately inserted in the double bond of binding agent, and binding agent is fully plasticized, improves the increasing of binding agent
Effect is moulded, mixed solvent is finally added in mixing powder abundant ball milling mixing again, casting slurry is made, is starched using the curtain coating
Expect the electronic ceramics compact structure consolidation of sintering production, crystal grain is small, and mechanical performance is greatly improved.
2nd, the present invention using absolute ethyl alcohol as mixed solvent, absolute ethyl alcohol nonhazardous, environment will not be polluted and
Human body causes harm, so that the environmental-protecting performance of casting slurry is improved, while avoiding the toxicity of casting slurry and ensureing production safety
Performance.Absolute ethyl alcohol can also effectively reduce sintering temperature when casting slurry is sintered as solvent simultaneously.The nonyl of the present invention
Phenol polyethenoxy ether is used as dispersant, so that the granular material of the present invention is scattered more preferable, powder is fully mixed with solvent
Close uniform, while NPE can also improve the flatness and elasticity of casting slurry.
Embodiment
With reference to embodiment, the present invention is described in further detail.
Embodiment one
A kind of electronic ceramics casting slurry configuration technique, is comprised the following steps that：
A, by design proportioning weigh powder, main solvent, dispersant, binding agent and plasticizer；
Described powder includes aluminum oxide, kaolin, talcum powder, calcium carbonate and yittrium oxide, and aluminum oxide is shared in casting slurry
Percentage by weight be 60%, described main solvent is absolute ethyl alcohol, and it accounts for 25% in casting slurry,
Described binding agent is polyvinyl butyral resin, and it accounts for 5%, described dispersant in casting slurry
For NPE, it accounts for 1% in casting slurry, and described plasticizer is O-phthalic
Dibutyl phthalate, it accounts for 3% in casting slurry, and surplus is the kaolin in powder, talcum powder, carbonic acid
The mixture of calcium and yittrium oxide.
B, the powder of weighing added in ball mill, then dispersant is added in ball mill, afterwards again by half
Main solvent is added in ball mill, starts ball mill ball milling 15 hours, and mixing powder is made in 30 DEG C of ball milling temperature；
C, the binding agent of weighing, plasticizer and second half main solvent be added in mixer, start mixer and mix 7
Hour, make the main solvent of binding agent, plasticizer and half completely molten, mixed solvent is made；
D, the mixed solvent prepared in step c is added in ball mill, starts ball mill ball milling 28 hours, ball milling temperature 30
DEG C, make the mixing powder in ball mill uniform with the abundant ball milling mixing of mixed solvent, electronic ceramics casting slurry configuration work is made
Skill.
Embodiment two
A kind of electronic ceramics casting slurry configuration technique, is comprised the following steps that：
A, by design proportioning weigh powder, main solvent, dispersant, binding agent and plasticizer；
Described powder includes aluminum oxide, kaolin, talcum powder, calcium carbonate and lanthana, and aluminum oxide is shared in casting slurry
Percentage by weight be 75%, described main solvent is absolute ethyl alcohol, and it accounts for 15% in casting slurry,
Described binding agent is polyvinyl butyral resin, and it accounts for 2%, described dispersant in casting slurry
For NPE, it accounts for 1% in casting slurry, and described plasticizer is O-phthalic
Dibutyl phthalate, it accounts for 4% in casting slurry, and surplus is the kaolin in powder, talcum powder, carbonic acid
The mixture of calcium and lanthana.
B, the powder of weighing added in ball mill, then dispersant is added in ball mill, afterwards again by half
Main solvent is added in ball mill, starts ball mill ball milling 10 hours, and mixing powder is made in 35 DEG C of ball milling temperature；
C, the binding agent of weighing, plasticizer and second half main solvent be added in mixer, start mixer and mix 5
Hour, make the main solvent of binding agent, plasticizer and half completely molten, mixed solvent is made；
D, the mixed solvent prepared in step c is added in ball mill, starts ball mill ball milling 20 hours, ball milling temperature 35
DEG C, make the mixing powder in ball mill uniform with the abundant ball milling mixing of mixed solvent, electronic ceramics casting slurry configuration work is made
Skill.
Embodiment three
A kind of electronic ceramics casting slurry configuration technique, is comprised the following steps that：
A, by design proportioning weigh powder, main solvent, dispersant, binding agent and plasticizer；
Described powder includes aluminum oxide, kaolin, talcum powder, chrome green, molybdenum oxide, calcium carbonate and yittrium oxide, oxidation
Aluminium accounts for 65% in casting slurry, and described main solvent is absolute ethyl alcohol, and it is shared in casting slurry
Percentage by weight be 20%, described binding agent is polyvinyl butyral resin, its shared percentage by weight in casting slurry
For 4%, described dispersant is NPE, and it accounts for 0.5% in casting slurry, described
Plasticizer be dibutyl phthalate, it accounts for 2% in casting slurry, during surplus is powder
Kaolin, talcum powder, chrome green, molybdenum oxide, the mixture of calcium carbonate and yittrium oxide.
B, the powder of weighing added in ball mill, then dispersant is added in ball mill, afterwards again by half
Main solvent is added in ball mill, starts ball mill ball milling 12 hours, and mixing powder is made in 30 DEG C of ball milling temperature；
C, the binding agent of weighing, plasticizer and second half main solvent be added in mixer, start mixer and mix 6
Hour, make the main solvent of binding agent, plasticizer and half completely molten, mixed solvent is made；
D, the mixed solvent prepared in step c is added in ball mill, starts ball mill ball milling 24 hours, ball milling temperature 30
DEG C, make the mixing powder in ball mill uniform with the abundant ball milling mixing of mixed solvent, electronic ceramics casting slurry configuration work is made
Skill.
Example IV
A kind of electronic ceramics casting slurry configuration technique, is comprised the following steps that：
A, by design proportioning weigh powder, main solvent, dispersant, binding agent and plasticizer；
Described powder includes aluminum oxide, kaolin, talcum powder, chrome green, molybdenum oxide, calcium carbonate and yittrium oxide, oxidation
Aluminium accounts for 68% in casting slurry, and described main solvent is absolute ethyl alcohol, and it is shared in casting slurry
Percentage by weight be 22%, described binding agent is polyvinyl butyral resin, its shared percentage by weight in casting slurry
For 3.5%, described dispersant is NPE, and it accounts for 0.8%, institute in casting slurry
The plasticizer stated is dibutyl phthalate, and it accounts for 2% in casting slurry, and surplus is in powder
Kaolin, talcum powder, chrome green, molybdenum oxide, the mixture of calcium carbonate and yittrium oxide.
B, the powder of weighing added in ball mill, then dispersant is added in ball mill, afterwards again by half
Main solvent is added in ball mill, starts ball mill ball milling 12 hours, and mixing powder is made in 32 DEG C of ball milling temperature；
C, the binding agent of weighing, plasticizer and second half main solvent be added in mixer, start mixer and mix
76 hours, make the main solvent of binding agent, plasticizer and half completely molten, mixed solvent is made；
D, the mixed solvent prepared in step c is added in ball mill, starts ball mill ball milling 25 hours, ball milling temperature 32
DEG C, make the mixing powder in ball mill uniform with the abundant ball milling mixing of mixed solvent, electronic ceramics casting slurry configuration work is made
Skill.
Embodiment five
A kind of electronic ceramics casting slurry configuration technique, is comprised the following steps that：
A, by design proportioning weigh powder, main solvent, dispersant, binding agent and plasticizer；
Described powder includes aluminum oxide, kaolin, talcum powder, calcium carbonate and lanthana, and aluminum oxide is shared in casting slurry
Percentage by weight be 62%, described main solvent is absolute ethyl alcohol, and it accounts for 23% in casting slurry,
Described binding agent is polyvinyl butyral resin, and it accounts for 5%, described dispersant in casting slurry
For NPE, it accounts for 0.7% in casting slurry, and described plasticizer is adjacent benzene two
Formic acid dibutyl ester, it accounts for 2.2% in casting slurry, surplus be kaolin in powder, talcum powder,
The mixture of calcium carbonate and lanthana.
B, the powder of weighing added in ball mill, then dispersant is added in ball mill, afterwards again by half
Main solvent is added in ball mill, starts ball mill ball milling 12 hours, and mixing powder is made in 30 DEG C of ball milling temperature；
C, the binding agent of weighing, plasticizer and second half main solvent be added in mixer, start mixer and mix 6
Hour, make the main solvent of binding agent, plasticizer and half completely molten, mixed solvent is made；
D, the mixed solvent prepared in step c is added in ball mill, starts ball mill ball milling 24 hours, ball milling temperature 30
DEG C, make the mixing powder in ball mill uniform with the abundant ball milling mixing of mixed solvent, electronic ceramics casting slurry configuration work is made
Skill.
It is noted that above-described embodiment is to the illustrative and not limiting of technical solution of the present invention, art is general
The equivalent substitution of logical technical staff or the other modifications made according to prior art, as long as not exceeding technical solution of the present invention
Thinking and scope, should be included within interest field of the presently claimed invention.
Claims (7)
1. a kind of electronic ceramics casting slurry configuration technique, it is characterised in that：Comprise the following steps that：
A, by design proportioning weigh powder, main solvent, dispersant, binding agent and plasticizer；
B, the powder of weighing added in ball mill, then dispersant is added in ball mill, it is again that the master of half is molten afterwards
Agent is added in ball mill, starts ball mill ball milling 10-15 hours, and mixing powder is made；
C, the binding agent of weighing, plasticizer and second half main solvent be added in mixer, start mixer and mix
Until it is completely molten, mixed solvent is made；
D, the mixed solvent prepared in step c is added in ball mill, starts ball mill ball milling 20-28 hours, make ball mill
In mixing powder and the abundant ball milling mixing of mixed solvent it is uniform, electronic ceramics casting slurry configuration technique is made.
2. electronic ceramics casting slurry configuration technique according to claim 1, it is characterised in that：Stirred in described step c
The mixing time for mixing machine is 5 ~ 7 hours.
3. electronic ceramics casting slurry configuration technique according to claim 1, it is characterised in that：In described step b
The Ball-milling Time of ball mill is 12 hours, and the Ball-milling Time of the ball mill in described step d is 24 hours.
4. electronic ceramics casting slurry configuration technique according to claim 1, it is characterised in that：Described powder includes oxygen
Change aluminium and additive, described aluminum oxide accounts for 60 ~ 75%, described additive in casting slurry
Including the one or more in kaolin, talcum powder, chrome green, molybdenum oxide, calcium carbonate, yittrium oxide and lanthana.
5. electronic ceramics casting slurry configuration technique according to claim 1, it is characterised in that：Described main solvent is nothing
Water-ethanol, it accounts for 15%~25% in casting slurry.
6. electronic ceramics casting slurry configuration technique according to claim 1, it is characterised in that：Described binding agent is poly-
Vinyl butyral, described dispersant is NPE, and described plasticizer is dibutyl phthalate.
7. electronic ceramics casting slurry configuration technique according to claim 1, it is characterised in that：Described step b and step
Ball milling temperature is 30 ~ 40 DEG C in rapid d.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107805074A (en) * | 2017-11-13 | 2018-03-16 | 戴承萍 | A kind of processing method of electronic ceramics casting slurry |
| CN109665820A (en) * | 2018-12-28 | 2019-04-23 | 江苏省宜兴电子器件总厂有限公司 | A kind of preparation method of high green density tape casting diaphragm |
| CN113683403A (en) * | 2021-08-18 | 2021-11-23 | 浙江光达电子科技有限公司 | Alumina slurry for nitrogen-oxygen sensor and preparation method thereof |
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| JP2008213240A (en) * | 2007-03-01 | 2008-09-18 | National Institute Of Advanced Industrial & Technology | Manufacturing method of alumina ceramic sintered compact and alumina ceramic sintered compact |
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| CN113683403A (en) * | 2021-08-18 | 2021-11-23 | 浙江光达电子科技有限公司 | Alumina slurry for nitrogen-oxygen sensor and preparation method thereof |
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