CN102557668A - Preparation method of non-uniform ceramic dielectric substrate - Google Patents
Preparation method of non-uniform ceramic dielectric substrate Download PDFInfo
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- CN102557668A CN102557668A CN201110337781XA CN201110337781A CN102557668A CN 102557668 A CN102557668 A CN 102557668A CN 201110337781X A CN201110337781X A CN 201110337781XA CN 201110337781 A CN201110337781 A CN 201110337781A CN 102557668 A CN102557668 A CN 102557668A
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Abstract
The embodiment of the invention provides a preparation method of a non-uniform ceramic dielectric substrate. The preparation method comprises the following steps of: aligning ceramic blank sheets with different dielectric constants at the upper part and the lower part, laminating and pressing into a layered ceramic blank with gradient changes in the dielectric constants; performing cutting separation on the layered ceramic blank along with the direction of the gradient changes in the dielectric constants to get triangular prism ceramic blanks; and splicing the triangular prism ceramic blanks into a cuboid with the gradient changes in the dielectric constants from the center to the outside along the axial direction, and performing cold isostatic pressing and high-temperature sintering so as to get the non-uniform ceramic dielectric substrate. According to the embodiment disclosed by the invention, the demand for electromagnetic property of the dielectric substrate can be met.
Description
[technical field]
The present invention relates to the preparing technical field of medium substrate, particularly a kind of preparation method of non-homogeneous ceramic dielectic substrate.
[background technology]
Fiber-reinforced resin matrix compound material is as the substrate of circuit card and ultra material and be widely used.Traditional fiber-reinforced resin matrix compound material is formed by epoxy resin, weighting agent and spun glass preparation.Be characterized in low price, but exist coefficient of thermal expansion big, the shortcoming that dielectric loss is big and frequency-temperature coefficient is big.And that ceramic substrate has a coefficient of thermal expansion is little, and therefore the characteristics that performance is good account for very consequence in growing electronic ceramics industry.
In the prior art, adopt casting method to prepare ceramic substrate, concrete technology is that ceramic powder is mixed in organic solvent with additives such as dispersion agent, tackiness agents, forms the slurry that evenly suspends; Slurry is flow on the base band from the hopper bottom; Relative movement through base band and scraper forms biscuit, under capillary effect, forms slick upper surface, and the thickness of base film is controlled by scraper; Treat solvent evaporation; Formation has certain intensity and flexible biscuit, and exsiccant biscuit and base band are peeled off the back spool, obtain finished product through oversintering.
But the ceramic dielectic substrate for preparing in the prior art is the medium substrate with even specific inductivity, is difficult to satisfy the demand to the medium substrate electromagnetic property.
[summary of the invention]
Technical problem to be solved by this invention provides a kind of preparation method of non-homogeneous ceramic dielectic substrate, can obtain specific inductivity is outwards become graded by hub medium substrate.
For solving the problems of the technologies described above, one embodiment of the invention provides a kind of preparation method of non-homogeneous ceramic dielectic substrate, and this preparation method comprises:
The ceramic batch sheet material consistency from top to bottom that will have differing dielectric constant carries out lamination, is pressed into the ceramic layered blank that specific inductivity becomes graded;
Become the direction of graded to carry out cutting and separating along specific inductivity ceramic layered blank, obtain the triangulo column ceramic batch;
The triangulo column ceramic batch is spliced into specific inductivity outwards becomes the rectangular parallelepiped of graded, obtain non-homogeneous ceramic dielectic substrate behind isostatic cool pressing and the high temperature sintering by hub.
Compared with prior art; Technique scheme has the following advantages: become the direction of graded to carry out cutting and separating along specific inductivity ceramic layered blank; Obtain the triangulo column ceramic batch; Then the triangulo column ceramic batch is spliced into specific inductivity and outwards becomes the non-homogeneous ceramic dielectic substrate of graded from hub, preparation technology is simple, can satisfy the demand to the medium substrate electromagnetic property.
[description of drawings]
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of ceramic layered blank;
Fig. 2 is the A-A ' sectional view to ceramic layered blank;
Fig. 3 is the structural representation of non-homogeneous ceramic dielectic substrate;
Fig. 4 is the B-B ' sectional view of non-homogeneous ceramic dielectic substrate;
Fig. 5 is preparing method's schema of the non-homogeneous ceramic dielectic substrate that provides of the embodiment of the invention one;
Fig. 6 is preparing method's schema of the non-homogeneous ceramic dielectic substrate that provides of the embodiment of the invention two.
[embodiment]
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making all other embodiment that obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
At first, for the easier understanding of those skilled in the art technical scheme of the present invention, technical scheme of the present invention is briefly introduced below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of ceramic layered blank; Can know from figure; To have the ceramic batch sheet material consistency from top to bottom of differing dielectric constant, and be pressed into the ceramic layered blank 11 that specific inductivity becomes graded, the specific inductivity of this ceramic layered blank 11 becomes graded along A-A ' line of cut.Ceramic layered blank 11 is carried out cutting and separating along A-A ' line of cut, obtain triangulo column ceramic batch 22 as shown in Figure 2.At least 4 (having illustrated 4 among Fig. 3) triangulo column ceramic batchs 22 are spliced into non-homogeneous ceramic dielectic substrate 33 as shown in Figure 3.Fig. 3 is cut along B-B ', obtain can know from Fig. 4 that like the said sectional plane 44 of Fig. 4 the specific inductivity of this ceramic dielectic substrate 33 outwards becomes graded by hub.
Referring to Fig. 5, be preparing method's schema of a kind of non-homogeneous ceramic dielectic substrate that provides of the embodiment of the invention one, this preparation method comprises the steps:
S51: adopt the mode of powder pressing forming, extrusion molding, flow casting molding or ejection formation to prepare ceramic batch sheet material with differing dielectric constant.
Wherein, powder pressing forming comprises: compression molding or isostatic pressing.
Wherein, this ceramic batch sheet material is in viscous state; The ceramic batch sheet material is: at least a in oxide ceramics, nitride ceramics, carbide ceramics and the boride ceramics.When the ceramic batch sheet material is when pottery of the same race, the shared ratio of each component is different in the different ceramic batch sheet materials, and for example the shared component of aluminum oxide is different in the different oxidation aluminium ceramic batch sheet material, thereby specific inductivity is also different.
S52: the ceramic batch sheet material consistency from top to bottom that will have differing dielectric constant carries out lamination, is pressed into the ceramic layered blank that specific inductivity becomes graded.
S53: become the direction of graded to carry out cutting and separating along specific inductivity ceramic layered blank, obtain the triangulo column ceramic batch.
S54: will at least 4 the triangulo column ceramic batchs be spliced into specific inductivity and outwards become the rectangular parallelepiped of graded, the non-homogeneous ceramic dielectic substrate of acquisition behind isostatic cool pressing and the high temperature sintering by hub.
Wherein, the specific inductivity of non-homogeneous ceramic dielectic substrate by the rule that hub outwards changes in gradient is: increases gradually, reduce gradually, increase earlier and reduce, perhaps reduce earlier to increase again.
In the present embodiment; Become the direction of graded to carry out cutting and separating along specific inductivity ceramic layered blank; Obtain the triangulo column ceramic batch; Then the triangulo column ceramic batch is spliced into specific inductivity and outwards becomes the non-homogeneous ceramic dielectic substrate of graded from hub, preparation technology is simple, can satisfy the demand to the medium substrate electromagnetic property.
Referring to Fig. 6, be preparing method's schema of a kind of non-homogeneous ceramic dielectic substrate that provides of the embodiment of the invention two, this preparation method comprises the steps:
S61: ceramic powder and dispersion agent, tackiness agent, solvent, sintering agent and tensio-active agent are mixed and made into ceramic size, process the ceramic batch sheet material of viscous state through curtain coating.
S62: the thickness according to required sheet material carries out lamination to the ceramic batch sheet material with identical specific inductivity, and the ceramic batch sheet material to lamination under preset temperature carries out vacuum hotpressing.
Wherein, the ceramic batch sheet material is: at least a in oxide ceramics, nitride ceramics, carbide ceramics and the boride ceramics.
S63: the ceramic batch sheet material consistency from top to bottom with differing dielectric constant that S62 is obtained carries out lamination, is pressed into the ceramic layered blank that specific inductivity becomes graded.
S64: become the direction of graded to carry out cutting and separating along specific inductivity ceramic layered blank, obtain the triangulo column ceramic batch.
S65: 4 triangulo column ceramic batchs are spliced into the square that specific inductivity outwards becomes gradient to increase gradually or reduce by hub, obtain non-homogeneous ceramic dielectic substrate behind isostatic cool pressing and the high temperature sintering.
Present embodiment is with respect to embodiment two, adopts casting method to prepare the ceramic batch sheet material, and this sheet material is carried out the pressing of lamination final vacuum, can improve the homogeneity of ceramic batch sheet material, reduces casting method and prepares in the ceramic batch sheet material process requirement to processing parameter.
More than the embodiment of the invention has been carried out detailed introduction, the explanation of above embodiment just is used for help understanding method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. the preparation method of a non-homogeneous ceramic dielectic substrate is characterized in that, said method comprises:
The ceramic batch sheet material consistency from top to bottom that will have differing dielectric constant carries out lamination, is pressed into the ceramic layered blank that specific inductivity becomes graded;
Become the direction of graded to carry out cutting and separating along specific inductivity ceramic layered blank, obtain the triangulo column ceramic batch;
The triangulo column ceramic batch is spliced into specific inductivity outwards becomes the rectangular parallelepiped of graded, obtain non-homogeneous ceramic dielectic substrate behind isostatic cool pressing and the high temperature sintering by hub.
2. preparation method according to claim 1 is characterized in that, before the said method, also comprises:
Adopt the mode of powder pressing forming, extrusion molding, flow casting molding or ejection formation to prepare the ceramic batch sheet material.
3. preparation method according to claim 2 is characterized in that, said powder pressing forming comprises: compression molding or isostatic pressing.
4. preparation method according to claim 2 is characterized in that, the mode of said employing flow casting molding prepares the ceramic batch sheet material, specifically comprises:
Ceramic powder and dispersion agent, tackiness agent, solvent and tensio-active agent are mixed and made into ceramic size, process the ceramic batch sheet material through curtain coating.
5. preparation method according to claim 4 is characterized in that said ceramic size also comprises sintering agent.
6. preparation method according to claim 4 is characterized in that, and is said after curtain coating is processed the ceramic batch sheet material, also comprises:
Ceramic batch sheet material to having identical specific inductivity carries out lamination, and the ceramic batch sheet material to lamination under preset temperature carries out vacuum hotpressing.
7. preparation method according to claim 1 is characterized in that, said ceramic batch sheet material is: at least a in oxide ceramics, nitride ceramics, carbide ceramics and the boride ceramics.
8. preparation method according to claim 7 is characterized in that, said ceramic batch sheet material is a pottery of the same race, the shared ratio difference of each component in each ceramic batch sheet material.
9. preparation method according to claim 1 is characterized in that, the rule variation that the specific inductivity of said non-homogeneous ceramic dielectic substrate is outwards increased gradually in gradient or reduces by hub.
10. preparation method according to claim 1 is characterized in that, the specific inductivity of said non-homogeneous ceramic dielectic substrate by the rule that hub outwards changes in gradient is: increase earlier reduces, perhaps reduces earlier to increase again.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110229469A (en) * | 2019-06-14 | 2019-09-13 | 清华大学深圳研究生院 | Dielectric gradient material and its application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548586A (en) * | 2003-05-22 | 2004-11-24 | 中南大学 | Ceramet material with gradient function for electrolyzing Al |
| CN101560106A (en) * | 2009-05-21 | 2009-10-21 | 深圳市金雨叶新材料科技有限公司 | Method for preparing textured piezoelectric ceramics with high piezoelectric strain constant |
| CN101844925A (en) * | 2010-05-21 | 2010-09-29 | 李艳 | Process for preparing multilayer ZrB2-SiC complex phase ultrahigh temperature ceramic wafer material by tape casting |
| CN101863154A (en) * | 2010-06-17 | 2010-10-20 | 天津大学 | Multilayer gradient Ba1-xSrxTiO3 (BST) dielectric ceramic material and preparation method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548586A (en) * | 2003-05-22 | 2004-11-24 | 中南大学 | Ceramet material with gradient function for electrolyzing Al |
| CN101560106A (en) * | 2009-05-21 | 2009-10-21 | 深圳市金雨叶新材料科技有限公司 | Method for preparing textured piezoelectric ceramics with high piezoelectric strain constant |
| CN101844925A (en) * | 2010-05-21 | 2010-09-29 | 李艳 | Process for preparing multilayer ZrB2-SiC complex phase ultrahigh temperature ceramic wafer material by tape casting |
| CN101863154A (en) * | 2010-06-17 | 2010-10-20 | 天津大学 | Multilayer gradient Ba1-xSrxTiO3 (BST) dielectric ceramic material and preparation method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110229469A (en) * | 2019-06-14 | 2019-09-13 | 清华大学深圳研究生院 | Dielectric gradient material and its application |
| CN110229469B (en) * | 2019-06-14 | 2022-03-18 | 清华大学深圳研究生院 | Dielectric gradient material and application thereof |
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Effective date of registration: 20120627 Address after: 518057 Nanshan District City, Guangdong province high tech Zone in the middle of a high tech building, No. 9 software building Applicant after: Shenzhen Kuang-Chi Institute of Advanced Technology Co-applicant after: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. Address before: 518057 Nanshan District City, Guangdong province high tech Zone in the middle of a high tech building, No. 9 software building Applicant before: Shenzhen Kuang-Chi Institute of Advanced Technology |
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Application publication date: 20120711 |