CN109397786A - A kind of heat loss through radiation can be around folding metallic aluminium base composite ceramic substrate and preparation method thereof - Google Patents
A kind of heat loss through radiation can be around folding metallic aluminium base composite ceramic substrate and preparation method thereof Download PDFInfo
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Abstract
What it is the present invention relates to a kind of heat loss through radiation successively can include heat loss through radiation layer, aluminum substrate, composite ceramics insulating protective layer and conductive layer around folding metallic aluminium base composite ceramic substrate；Wherein: heat loss through radiation layer with a thickness of 20-35 μm; aluminum substrate with a thickness of 300-800 μm; composite ceramics insulating protective layer with a thickness of 70-120 μm; conductive layer with a thickness of 15-36 μm; heat loss through radiation layer is made of heat loss through radiation coating, and heat loss through radiation coating includes following components: the Aluminum sol of 15-62 parts by weight, the silica solution of 15-62 parts by weight; the nano-oxide of 4-23 parts by weight, the anti-settling agent of 5-23 parts by weight.Heat loss through radiation of the invention can be significantly increased the heat-sinking capability of leading of substrate around folding metallic aluminium base composite ceramic substrate, at the same the substrate also have it is good can be around the performance of folding.
Description
Technical field
The invention belongs to composite ceramic material technical field, in particular to a kind of heat loss through radiation can be answered around folding metal aluminium base
Ceramic substrate and preparation method thereof is closed, more particularly to a kind of heat dissipation/heat loss through radiation of efficiently leading can be around folding metal aluminium base composite ceramic
Porcelain substrate and preparation method thereof.
Background technique
With the fast development of electronic technology, adjoint problem also emerges one after another, and conventional ceramic plate or metal substrate are not
It is able to satisfy the needs of diversified development.In fields such as electronics, electric appliance and LED illuminations, it is desirable that substrate leads heat dissipation with good, with
And excellent bending ability.
Conventional hard wiring board itself is unable to bending, therefore is not suitable for being mounted in the plane of surface irregularity, route
Plate is easy to produce heat during the work time, if do not conducted to heat, will affect the service life of wiring board for a long time.
Now need to seek it is a kind of have it is excellent lead heat-sinking capability, and have well around the substrate for rolling over effect.
Summary of the invention
(1) technical problems to be solved
To solve the above-mentioned problems, the purpose of the present invention is to provide can be around folding metallic aluminium base composite ceramic substrate and its system
Preparation Method, the heat-sinking capability of leading that substrate can be significantly increased around folding metallic aluminium base composite ceramic substrate of the invention, together
When the substrate also have it is good can be around the performance of folding.
(2) technical solution
In order to achieve the above object, the main technical schemes that the present invention uses include:
A kind of heat loss through radiation successively can include heat loss through radiation layer, aluminum substrate, answer around folding metallic aluminium base composite ceramic substrate
Close ceramic insulation protective layer and conductive layer；
Wherein:
Heat loss through radiation layer with a thickness of 20-35 μm,
Aluminum substrate with a thickness of 200-800 μm,
Composite ceramics insulating protective layer with a thickness of 70-120 μm,
Conductive layer with a thickness of 15-36 μm,
The heat loss through radiation layer is made of heat loss through radiation coating, and the heat loss through radiation coating includes following components:
The Aluminum sol of 15-62 parts by weight,
The silica solution of 15-62 parts by weight,
The oxide of 4-23 parts by weight,
The anti-settling agent of 5-23 parts by weight.
Preferably, the Aluminum sol is distributed nano aluminium oxide, and the partial size of discrete particles is 2-7 μ in the Aluminum sol
M,
The silica solution is organosilicon/epoxy modified resin,
The oxide is Mn-Cr-Ti-Cu system multivariant oxide, and partial size is 12-27 μm,
The anti-settling agent is nano aluminium oxide dispersion liquid.
Preferably, the aluminum substrate is the aluminum or aluminum alloy of 1,3,5,6 or 7 series；
The conductive layer is copper foil, and the copper foil is electrolytic copper foil or rolled copper foil.
Preferably, the composite ceramics insulating protective layer is made of composite ceramics insulating materials, the composite ceramics insulation
Material includes following components:
The modified siloxane performed polymer of 40-60 parts by weight,
The aluminium oxide and aluminium nitride composite granule of 25-35 parts by weight,
The dispersing agent of 0-1 parts by weight,
The levelling agent of 0-1 parts by weight,
The coupling agent of 2-5 parts by weight, and
The solvent of 5-33 parts by weight.
Preferably, the partial size of the aluminium oxide and aluminium nitride composite granule is 2-7 μm,
The dispersing agent is nano aluminium oxide dispersion liquid,
The coupling agent is KH550 and/or KH560,
The solvent is ethyl alcohol and/or propylene glycol methyl ether acetate.
Preferably, in the aluminium oxide and aluminium nitride composite granule, the mass ratio of aluminium oxide and aluminium nitride is 1.5~2.5:
1。
According to another aspect of the present invention, a kind of heat loss through radiation can around folding metallic aluminium base composite ceramic substrate preparation side
Method includes the following steps:
S1: the preparation of composite ceramics insulating materials, by solvent, aluminium oxide and aluminium nitride composite granule, dispersing agent and coupling
Agent mixing, ball milling obtain slurry；After gained slurry is mixed with modified siloxane performed polymer, be added levelling agent mixing to get
Composite ceramics insulating materials a；
S2: the preparation of heat loss through radiation coating, by distributed nano aluminium oxide Aluminum sol, nano-oxide, anti-settling agent, filler
It is put into dispersion machine with pigment, dispersion grinding obtains raw material b；Then organosilicon/epoxy modified resin is mixed with raw material b, and adopted
It is sanded with nanoscale horizontal sand mill, heat loss through radiation coating c is obtained after filtering；
S3: the preparation of conductive metal copper foil layer-composite ceramics insulating protective layer, by composite ceramics insulating materials a and conduction
Metal copper foil is handled with casting apparatus curtain coating, obtains composite ceramics-copper-foil conducting electricity material d；
S4: heat loss through radiation coating c is sprayed on aluminum or aluminum alloy surface, drying by the preparation of aluminum substrate-heat loss through radiation layer
Prepare aluminum substrate-heat loss through radiation layer e；
S5: it carries out composite ceramics-copper-foil conducting electricity material d and aluminum substrate-heat loss through radiation layer e to cover group with hot calender
It closes, obtains metallic aluminium base composite ceramic substrate f, metallic aluminium base composite ceramic substrate f is suppressed through vacuum hot-pressing process, obtaining can
Around folding metallic aluminium base composite ceramic substrate.
Preferably, in step S2, the granularity of raw material b component is less than 10 μm；
In step S3, curtain coating treatment temperature is 160-180 DEG C, and composite ceramics-copper-foil conducting electricity material d is with a thickness of 80-150
μm。
Preferably, in step S4, drying temperature is 180-200 DEG C.
Preferably, in step S5, the temperature for covering combination is greater than 90 DEG C, and in the ring that vacuum degree is -0.2~-0.8MPA
Hot pressing is covered under border.
(3) beneficial effect
The invention has the following advantages:
1, there is the excellent heat loss through radiation layer for leading heat dissipation effect by the one side coating in aluminum substrate, make it is of the invention can
Heat dissipation/heat loss through radiation ability is led with good around folding metallic aluminium base composite ceramic substrate.
2, the reasonable heat loss through radiation layer of thickness, aluminum substrate, composite ceramics insulating protective layer and conductive layer are arranged by matching,
Enable it is of the invention can have around folding metallic aluminium base composite ceramic substrate good around folding endurance, diversified demand can be suitable for
Occasion.
3, of the invention can be simple around folding metallic aluminium base composite ceramic base plate preparation method, it is easy to operate.
Detailed description of the invention
Fig. 1 be the present invention it is auxiliary penetrate heat dissipation can around folding metallic aluminium base composite ceramic substrate structural schematic diagram
Description of symbols:
1: heat loss through radiation layer；2: aluminum substrate；3: composite ceramics insulating protective layer；4: conductive layer.
Specific embodiment
Below by specific embodiment, in conjunction with attached drawing, the present invention is further explained.It should be understood that these embodiments are only used for
Illustrate the present invention, rather than limits the scope of the invention.
Pigment, filler and levelling agent in the art of this patent, industry universal product can be met the requirements.
Embodiment 1
It is of the invention a kind of it is auxiliary penetrate heat dissipation can be in folding metallic aluminium base composite ceramic substrate, the present embodiment, the formula of use
And technological parameter is as follows:
(1) material component of heat loss through radiation coating is as follows:
The distributed nano aluminium oxide of 15 parts by weight, partial size are 2 μm,
Organosilicon/epoxy modified resin of 62 parts by weight,
The Mn-Cr-Ti-Cu system multivariant oxide of 23 parts by weight, partial size are 27 μm,
The pigment of 27 parts by weight,
The filler of 27 parts by weight,
The nano aluminium oxide dispersion liquid of 23 parts by weight；
(2) aluminum substrate is the aluminum or aluminum alloy of 1 system；
(3) composite ceramics insulating material component is as follows:
The modified siloxane performed polymer of 40 parts by weight,
The aluminium oxide and aluminium nitride composite granule of 35 parts by weight, partial size are 2 μm, and the mass ratio of aluminium oxide and aluminium nitride is
1.5:1
The nano aluminium oxide dispersion liquid of 1 parts by weight,
The levelling agent of 1 parts by weight,
The coupling agent KH550 of 5 parts by weight,
The ethyl alcohol of 33 parts by weight；
(4) conductive layer is electrolytic etching of metal copper foil.
The preparation method is as follows:
S1: the partial size of the ethyl alcohol of 33 parts by weight, 35 parts by weight is 2 μm of aluminium oxide by the preparation of composite ceramics insulating materials
It is mixed with the coupling agent KH550 of aluminium nitride composite granule, the nano aluminium oxide dispersion liquid of 1 parts by weight and 5 parts by weight, ball milling obtains
Slurry；After gained slurry is mixed with the modified siloxane performed polymer of 40 parts by weight, levelling agent mixing is added to get composite ceramics
Insulating materials a；
S2: the preparation of heat loss through radiation coating, by 15 parts by weight partial sizes be 2 μm distributed nano aluminium oxide Aluminum sol, 23
Mn-Cr-Ti-Cu system multivariant oxide, the nano aluminium oxide dispersion liquid of 23 parts by weight, 27 parts by weight of the parts by weight partial size for 27 μm
Filler and the pigment of 27 parts by weight be put into dispersion machine and obtain raw material b when high speed dispersion is ground to granularity less than 10 μm；Then
Organosilicon/epoxy modified resin of 62 parts by weight is mixed with raw material b, and is sanded using nanoscale horizontal sand mill, after filtering
Obtain heat loss through radiation coating c；
S3: conductive metal copper foil layer-composite ceramics insulating protective layer curtain coating preparation by composite ceramics insulating materials a and is led
Electric metal copper foil is handled with casting apparatus curtain coating, and curtain coating treatment temperature is 160-180 DEG C, is controlled thickness at 80-150 μm, is obtained
Composite ceramics-copper foil material d；
S4: heat loss through radiation coating coating c is sprayed on aluminum or aluminum alloy surface by the preparation of aluminum substrate-heat loss through radiation layer, is dried
Dry temperature is 180-200 DEG C, and drying prepares heat loss through radiation layer with a thickness of 20-35 μm of aluminum substrate-heat loss through radiation layer e；
S5: with hot calender when being greater than 90 DEG C, composite ceramics-copper foil material d and aluminum substrate-heat loss through radiation layer e are pressed
Combination is covered, metallic aluminium base composite ceramic substrate f is obtained, by metallic aluminium base composite ceramic substrate f in vacuum degree -0.2~-0.8MPa
Under, suppressed through vacuum hot-pressing process, obtain heat loss through radiation as shown in Figure 1 can around folding metallic aluminium base composite ceramic substrate, according to
Secondary includes heat loss through radiation layer 1, aluminum substrate 2, composite ceramics insulating protective layer 3 and conductive layer 4.
Obtained heat loss through radiation can around folding metallic aluminium base composite ceramic substrate parameter and performance it is as follows:
1 heat loss through radiation of table can be formed around folding metallic aluminium base composite ceramic baseplate material
| Title material | Thickness |
| Heat loss through radiation layer | 25μm |
| Aluminum substrate | 250μm |
| Composite ceramics insulating protective layer | 80μm |
| Conductive layer | 18μm |
2 heat loss through radiation of table can around folding metallic aluminium base composite ceramic pdm substrate test parameter
Embodiment 2
It is of the invention a kind of it is auxiliary penetrate heat dissipation can be in folding metallic aluminium base composite ceramic substrate, the present embodiment, the formula of use
And technological parameter is as follows:
(1) material component of heat loss through radiation coating is as follows:
The distributed nano aluminium oxide Aluminum sol of 30 parts by weight, partial size are 3 μm,
Organosilicon/epoxy modified resin of 15 parts by weight,
The Mn-Cr-Ti-Cu system multivariant oxide of 4 parts by weight, partial size are 12 μm,
The pigment of 3 parts by weight,
The filler of 3 parts by weight,
The nano aluminium oxide dispersion liquid of 5 parts by weight；
(2) aluminum substrate is the aluminum or aluminum alloy of 3 systems；
(3) composite ceramics insulating material component is as follows:
The modified siloxane performed polymer of 60 parts by weight,
The aluminium oxide and aluminium nitride composite granule of 25 parts by weight, partial size are 7 μm, and the mass ratio of aluminium oxide and aluminium nitride is
1.8:1
The nano aluminium oxide dispersion liquid of 0.5 parts by weight,
The levelling agent of 0.5 parts by weight,
The coupling agent KH550 and KH560 of 2 parts by weight,
The etoh solvent and propylene glycol methyl ether acetate of 5 parts by weight；
(4) electric layer is rolling metal copper foil.
The preparation method is as follows:
S1: the preparation of composite ceramics insulating materials, by the etoh solvent of 5 parts by weight and propylene glycol methyl ether acetate, 25 weights
Measure aluminium oxide and aluminium nitride composite granule, the nano aluminium oxide dispersion liquid of 0.5 parts by weight and 2 parts by weight that part partial size is 7 μm
Coupling agent KH550 and KH560 mixing, ball milling obtain slurry；Gained slurry is mixed with the modified siloxane performed polymer of 60 parts by weight
Afterwards, levelling agent mixing is added to get composite ceramics insulating materials a；
S2: the preparation of heat loss through radiation coating, distributed nano aluminium oxide Aluminum sol, 4 weights by 15 parts by weight partial sizes for 3 μm
Mn-Cr-Ti-Cu system multivariant oxide that amount part partial size is 12 μm, the nano aluminium oxide dispersion liquids of 5 parts by weight, 3 parts by weight are filled out
Material and the pigment of 3 parts by weight are put into dispersion machine and obtain raw material b when high speed dispersion is ground to granularity less than 10 μm；Then by 15 weights
Organosilicon/the epoxy modified resin of amount part is mixed with raw material b, and is sanded using nanoscale horizontal sand mill, obtains spoke after filtering
Penetrate heat radiation coating c；
S3: conductive metal copper foil layer-composite ceramics insulating protective layer curtain coating preparation by composite ceramics insulating materials a and is led
Electric metal copper foil is handled with casting apparatus curtain coating, and curtain coating treatment temperature is 160-180 DEG C, is controlled thickness at 80-150 μm, is obtained
Composite ceramics-copper foil material d；
S4: heat loss through radiation coating coating c is sprayed on aluminum or aluminum alloy surface by the preparation of aluminum substrate-heat loss through radiation layer, is dried
Dry temperature is 180-200 DEG C, and drying prepares heat loss through radiation layer with a thickness of 20-35 μm of aluminum substrate-heat loss through radiation layer e；
S5: with hot calender when being greater than 90 DEG C, composite ceramics-copper foil material d and aluminum substrate-heat loss through radiation layer e are pressed
Combination is covered, metallic aluminium base composite ceramic substrate f is obtained, by metallic aluminium base composite ceramic substrate f in vacuum degree -0.2~-0.8MPa
Under, suppressed through vacuum hot-pressing process, obtain heat loss through radiation as shown in Figure 1 can around folding metallic aluminium base composite ceramic substrate, according to
Secondary includes heat loss through radiation layer 1, aluminum substrate 2, composite ceramics insulating protective layer 3 and conductive layer 4.
Obtained heat loss through radiation can around folding metallic aluminium base composite ceramic substrate parameter and performance it is as follows:
3 heat loss through radiation of table can be formed around folding metallic aluminium base composite ceramic baseplate material
| Title material | Thickness |
| Heat loss through radiation layer | 25μm |
| Aluminum substrate | 400μm |
| Composite ceramics insulating protective layer | 80μm |
| Conductive layer | 18μm |
4 heat loss through radiation of table can around folding metallic aluminium base composite ceramic pdm substrate test parameter
Embodiment 3
It is of the invention a kind of it is auxiliary penetrate heat dissipation can be in folding metallic aluminium base composite ceramic substrate, the present embodiment, the formula of use
And technological parameter is as follows:
(1) material component of heat loss through radiation coating is as follows:
The distributed nano aluminium oxide Aluminum sol of 40 parts by weight, partial size are 4 μm,
Organosilicon/epoxy modified resin of 40 parts by weight,
The Mn-Cr-Ti-Cu system multivariant oxide of 10 parts by weight, partial size are 15 μm,
The pigment of 12 parts by weight,
The filler of 13 parts by weight,
The nano aluminium oxide dispersion liquid of 10 parts by weight；
(2) aluminum substrate is the aluminum or aluminum alloy of 5 systems；
(3) composite ceramics insulating material component is as follows:
The modified siloxane performed polymer of 46 parts by weight,
The aluminium oxide and aluminium nitride composite granule of 28 parts by weight, partial size are 5 μm, and the mass ratio of aluminium oxide and aluminium nitride is
2.1:1
The nano aluminium oxide dispersion liquid of 0.8 parts by weight,
The levelling agent of 0.4 parts by weight,
The coupling agent KH560 of 3 parts by weight,
The solvent propylene glycol methyl ether acetate of 16 parts by weight；
(4) conductive layer is electrolytic etching of metal copper foil.
The preparation method is as follows:
S1: the preparation of composite ceramics insulating materials, by the solvent propylene glycol methyl ether acetates of 16 parts by weight, 28 parts by weight
Partial size is the coupling agent of 5 μm of aluminium oxide and aluminium nitride composite granule, the nano aluminium oxide dispersion liquid of 0.8 parts by weight and 3 parts by weight
KH560 mixing, ball milling obtain slurry；After gained slurry is mixed with the modified siloxane performed polymer of 46 parts by weight, levelling agent is added
Mixing is to get composite ceramics insulating materials a；
S2: the preparation of heat loss through radiation coating, by 40 parts by weight partial sizes be 4 μm distributed nano aluminium oxide Aluminum sol, 10
Mn-Cr-Ti-Cu system multivariant oxide, the nano aluminium oxide dispersion liquid of 10 parts by weight, 13 parts by weight of the parts by weight partial size for 15 μm
Filler and the pigment of 12 parts by weight be put into dispersion machine and obtain raw material b when high speed dispersion is ground to granularity less than 10 μm；Then
Organosilicon/epoxy modified resin of 40 parts by weight is mixed with raw material b, and is sanded using nanoscale horizontal sand mill, after filtering
Obtain heat loss through radiation coating c；
S3: conductive metal copper foil layer-composite ceramics insulating protective layer curtain coating preparation by composite ceramics insulating materials a and is led
Electric metal copper foil is handled with casting apparatus curtain coating, and curtain coating treatment temperature is 160-180 DEG C, is controlled thickness at 80-150 μm, is obtained
Composite ceramics-copper foil material d；
S4: heat loss through radiation coating coating c is sprayed on aluminum or aluminum alloy surface by the preparation of aluminum substrate-heat loss through radiation layer, is dried
Dry temperature is 180-200 DEG C, and drying prepares heat loss through radiation layer with a thickness of 20-35 μm of aluminum substrate-heat loss through radiation layer e；
S5: with hot calender when being greater than 90 DEG C, composite ceramics-copper foil material d and aluminum substrate-heat loss through radiation layer e are pressed
Combination is covered, metallic aluminium base composite ceramic substrate f is obtained, by metallic aluminium base composite ceramic substrate f in vacuum degree -0.2~-0.8MPa
Under, suppressed through vacuum hot-pressing process, obtain heat loss through radiation as shown in Figure 1 can around folding metallic aluminium base composite ceramic substrate, according to
Secondary includes heat loss through radiation layer 1, aluminum substrate 2, composite ceramics insulating protective layer 3 and conductive layer 4.
Obtained heat loss through radiation can around folding metallic aluminium base composite ceramic substrate parameter and performance it is as follows:
5 heat loss through radiation of table can be formed around folding metallic aluminium base composite ceramic baseplate material
| Title material | Thickness |
| Heat loss through radiation layer | 25μm |
| Aluminum substrate | 450μm |
| Composite ceramics insulating protective layer | 80μm |
| Conductive layer | 36μm |
6 heat loss through radiation of table can around folding metallic aluminium base composite ceramic pdm substrate test parameter
Embodiment 4
It is of the invention a kind of it is auxiliary penetrate heat dissipation can be in folding metallic aluminium base composite ceramic substrate, the present embodiment, the formula of use
And technological parameter is as follows:
(1) material component of heat loss through radiation coating is as follows:
The distributed nano aluminium oxide Aluminum sol of 50 parts by weight, partial size are 6 μm,
Organosilicon/epoxy modified resin of 48 parts by weight,
The Mn-Cr-Ti-Cu system multivariant oxide of 20 parts by weight, partial size are 24 μm,
The pigment of 22 parts by weight,
The filler of 25 parts by weight,
The nano aluminium oxide dispersion liquid of 21 parts by weight；
(2) aluminum substrate is the aluminum or aluminum alloy of 7 systems；
(3) composite ceramics insulating material component is as follows:
The modified siloxane performed polymer of 55 parts by weight,
The aluminium oxide and aluminium nitride composite granule of 31 parts by weight, partial size are 5.5 μm, and the mass ratio of aluminium oxide and aluminium nitride is
2.5:1
The nano aluminium oxide dispersion liquid of 0.3 parts by weight,
The levelling agent of 0.7 parts by weight,
The coupling agent KH550 and KH560 of 4 parts by weight,
The etoh solvent and propylene glycol methyl ether acetate of 29 parts by weight；
(4) conductive layer is rolling metal copper foil.
The preparation method is as follows:
S1: the preparation of composite ceramics insulating materials, by the etoh solvent of 29 parts by weight and propylene glycol methyl ether acetate, 31 weights
The partial size for measuring part is 5.5 μm of aluminium oxide and aluminium nitride composite granule, the nano aluminium oxide dispersion liquid of 0.3 parts by weight and 4 parts by weight
Coupling agent KH550 and KH560 mixing, ball milling obtains slurry；Gained slurry and the modified siloxane performed polymer of 55 parts by weight are mixed
After conjunction, levelling agent mixing is added to get composite ceramics insulating materials a；
S2: the preparation of heat loss through radiation coating, by 50 parts by weight partial sizes be 6 μm distributed nano aluminium oxide Aluminum sol, 20
Mn-Cr-Ti-Cu system multivariant oxide, the nano aluminium oxide dispersion liquid of 21 parts by weight, 25 parts by weight of the parts by weight partial size for 24 μm
Filler and the pigment of 22 parts by weight be put into dispersion machine and obtain raw material b when high speed dispersion is ground to granularity less than 10 μm；Then
Organosilicon/epoxy modified resin of 48 parts by weight is mixed with raw material b, and is sanded using nanoscale horizontal sand mill, after filtering
Obtain heat loss through radiation coating c；
S3: conductive metal copper foil layer-composite ceramics insulating protective layer curtain coating preparation by composite ceramics insulating materials a and is led
Electric metal copper foil is handled with casting apparatus curtain coating, and curtain coating treatment temperature is 160-180 DEG C, is controlled thickness at 80-150 μm, is obtained
Composite ceramics-copper foil material d；
S4: heat loss through radiation coating coating c is sprayed on aluminum or aluminum alloy surface by the preparation of aluminum substrate-heat loss through radiation layer, is dried
Dry temperature is 180-200 DEG C, and drying prepares heat loss through radiation layer with a thickness of 20-35 μm of aluminum substrate-heat loss through radiation layer e；
S5: with hot calender when being greater than 90 DEG C, composite ceramics-copper foil material d and aluminum substrate-heat loss through radiation layer e are pressed
Combination is covered, metallic aluminium base composite ceramic substrate f is obtained, by metallic aluminium base composite ceramic substrate f in vacuum degree -0.2~-0.8MPa
Under, suppressed through vacuum hot-pressing process, obtain heat loss through radiation as shown in Figure 1 can around folding metallic aluminium base composite ceramic substrate, according to
Secondary includes heat loss through radiation layer 1, aluminum substrate 2, composite ceramics insulating protective layer 3 and conductive layer 4.
Obtained heat loss through radiation can around folding metallic aluminium base composite ceramic substrate parameter and performance it is as follows:
7 heat loss through radiation of table can be formed around folding metallic aluminium base composite ceramic baseplate material
| Title material | Thickness |
| Heat loss through radiation layer | 25μm |
| Aluminum substrate | 600μm |
| Composite ceramics insulating protective layer | 80μm |
| Conductive layer | 36μm |
8 heat loss through radiation of table can around folding metallic aluminium base composite ceramic pdm substrate test parameter
Finally, it should be noted that above-described embodiments are merely to illustrate the technical scheme, rather than to it
Limitation；Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should understand that:
It can still modify to technical solution documented by previous embodiment, or to part of or all technical features into
Row equivalent replacement；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (10)
1. a kind of heat loss through radiation can around folding metallic aluminium base composite ceramic substrate, it is characterised in that: successively include heat loss through radiation layer,
Aluminum substrate, composite ceramics insulating protective layer and conductive layer；
Wherein:
Heat loss through radiation layer with a thickness of 20-35 μm,
Aluminum substrate with a thickness of 200-800 μm,
Composite ceramics insulating protective layer with a thickness of 70-120 μm,
Conductive layer with a thickness of 15-36 μm,
The heat loss through radiation layer is made of heat loss through radiation coating, and the heat loss through radiation coating includes following components:
The Aluminum sol of 15-62 parts by weight,
The silica solution of 15-62 parts by weight,
The oxide of 4-23 parts by weight,
The anti-settling agent of 5-23 parts by weight.
2. according to claim 1 can be around folding metallic aluminium base composite ceramic substrate, it is characterised in that:
The Aluminum sol is distributed nano aluminium oxide, and the partial size of discrete particles is 2-7 μm in the Aluminum sol,
The silica solution is organosilicon/epoxy modified resin,
The oxide is Mn-Cr-Ti-Cu system multivariant oxide, and partial size is 12-27 μm,
The anti-settling agent is nano aluminium oxide dispersion liquid.
3. it is according to claim 1 can around folding metallic aluminium base composite ceramic substrate, it is characterised in that: the aluminum substrate be 1,
3, the aluminum or aluminum alloy of 5,6 or 7 series；
The conductive layer is copper foil, and the copper foil is electrolytic copper foil or rolled copper foil.
4. according to claim 1 can be around folding metallic aluminium base composite ceramic substrate, it is characterised in that: the composite ceramics are exhausted
Edge protective layer is made of composite ceramics insulating materials, and the composite ceramics insulating materials includes following components:
The modified siloxane performed polymer of 40-60 parts by weight,
The aluminium oxide and aluminium nitride composite granule of 25-35 parts by weight,
The dispersing agent of 0-1 parts by weight,
The levelling agent of 0-1 parts by weight,
The coupling agent of 2-5 parts by weight, and
The solvent of 5-33 parts by weight.
5. according to claim 4 can be around folding metallic aluminium base composite ceramic substrate, it is characterised in that:
The partial size of the aluminium oxide and aluminium nitride composite granule is 2-7 μm,
The dispersing agent is nano aluminium oxide dispersion liquid,
The coupling agent is KH550 and/or KH560,
The solvent is ethyl alcohol and/or propylene glycol methyl ether acetate.
6. according to claim 4 can be around folding metallic aluminium base composite ceramic substrate, it is characterised in that: the aluminium oxide and nitrogen
Change in aluminium composite granule, the mass ratio of aluminium oxide and aluminium nitride is 1.5~2.5:1.
7. a kind of heat loss through radiation can around folding metallic aluminium base composite ceramic substrate preparation method, it is characterised in that: including following
Step:
S1: the preparation of composite ceramics insulating materials mixes solvent, aluminium oxide and aluminium nitride composite granule, dispersing agent and coupling agent
It closes, ball milling obtains slurry；After gained slurry is mixed with modified siloxane performed polymer, the levelling agent mixing is added to get compound
Ceramic insulating material a；
S2: the preparation of heat loss through radiation coating, by distributed nano aluminium oxide Aluminum sol, nano-oxide, anti-settling agent, filler and face
Material is put into dispersion machine, and dispersion grinding obtains raw material b；Then organosilicon/epoxy modified resin is mixed with raw material b, and uses and receives
Meter level horizontal sand mill is sanded, and heat loss through radiation coating c is obtained after filtering；
S3: the preparation of conductive metal copper foil layer-composite ceramics insulating protective layer, by composite ceramics insulating materials a and conductive metal
Copper foil is handled with casting apparatus curtain coating, obtains composite ceramics-copper-foil conducting electricity material d；
S4: heat loss through radiation coating c is sprayed on aluminum or aluminum alloy surface, drying preparation by the preparation of aluminum substrate-heat loss through radiation layer
Aluminum substrate-heat loss through radiation layer e out；
S5: it carries out composite ceramics-copper-foil conducting electricity material d and aluminum substrate-heat loss through radiation layer e to cover combination with hot calender, obtain
To metallic aluminium base composite ceramic substrate f, metallic aluminium base composite ceramic substrate f is suppressed through vacuum hot-pressing process, obtaining can be around folding
Metallic aluminium base composite ceramic substrate.
8. according to claim 7 can be around the preparation method of folding metallic aluminium base composite ceramic substrate, it is characterised in that:
In step S2, the granularity of raw material b component is less than 10 μm；
In step S3, curtain coating treatment temperature is 160-180 DEG C, and composite ceramics-copper-foil conducting electricity material d is with a thickness of 80-150 μm.
9. according to claim 7 can be around the preparation method of folding metallic aluminium base composite ceramic substrate, it is characterised in that: step
In S4, drying temperature is 180-200 DEG C.
10. according to claim 7 can be around the preparation method of folding metallic aluminium base composite ceramic substrate, it is characterised in that: step
In rapid S5, the temperature for covering combination is greater than 90 DEG C, and hot pressing is covered in the environment of vacuum degree is -0.2~-0.8MPA.
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