CN106316408A - Preparation process of high-gloss substrate for LED - Google Patents

Preparation process of high-gloss substrate for LED Download PDF

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Publication number
CN106316408A
CN106316408A CN201610654918.7A CN201610654918A CN106316408A CN 106316408 A CN106316408 A CN 106316408A CN 201610654918 A CN201610654918 A CN 201610654918A CN 106316408 A CN106316408 A CN 106316408A
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parts
substrate
preparation
slurry
powder
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陈加根
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Wave Island Anhui Recreation Facility Co Ltd
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Wave Island Anhui Recreation Facility Co Ltd
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/584—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • 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
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
    • C04B2235/3481—Alkaline earth metal alumino-silicates other than clay, e.g. cordierite, beryl, micas such as margarite, plagioclase feldspars such as anorthite, zeolites such as chabazite
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • 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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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/40—Metallic constituents or additives not added as binding phase
    • C04B2235/407—Copper
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/444—Halide containing anions, e.g. bromide, iodate, chlorite
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Ceramic Products (AREA)

Abstract

The invention relates to a preparation process of a high-gloss substrate for an LED. The process comprises the steps of 1, preparation of a combined sintering aid; 2, preparation of slurry; 3, molding. The preparation process has the advantages that by adopting a proper sintering method and selecting the proper sintering aid, densification of a sintered body is realized, and the heat conductivity is greatly improved; the sintering aid can form a low-melting-point phase, so that liquid phase sintering is realized, sintering temperature is lowered, densification of a green body is promoted, and the hardness and gloss of the surface of the substrate are enhanced. The substrate is large in heat conductivity coefficient, excellent in heat resistance and high in bending strength and avoids bending, warping and other phenomena.

Description

A kind of preparation technology of LED high gloss substrate
Technical field
The invention belongs to LED matrix technique field, be specifically related to the preparation technology of a kind of LED high gloss substrate.
Background technology
LED mainly include LED chip and Lamp cup, usual LED chip be with LED luminescent wafer with beat gold thread, eutectic or The mode of flip is connected on heat-radiating substrate formation, then LED chip is fixed on the circuit board of system, and heat-radiating substrate is played the part of Heat radiation, conduct electricity, insulate triple role, existing heat-radiating substrate is mainly metal basal board, but this kind of metal basal board connects LED The technology of luminescent wafer also exists the drawback of poor radiation, poor insulativity.
Along with the demand of LED illumination is increasingly urgent, the heat dissipation problem of great power LED comes into one's own (too high temperature increasingly LED luminous efficiency can be caused to decay)；If LED uses produced used heat effectively to shed, then the life-span of LED can be caused Fatefulue impact.Present stage more universal heat-radiating substrate has 4 kinds: directly copper-clad plate (DBC), direct copper plating substrate (DPC), high Temperature burns multilager base plate (HTCC) and low temperature co-fired multilager base plate (LTCC) altogether.There is cost restriction, insulating properties in actual use Can wait shortcoming not, its manufacturing cost is higher, and heat dispersion is poor, and moisture resistance, corrosion resistance are bad, causes the use longevity of LED Order shorter, it is impossible to foot market demand, the formula of the most necessary improvement material, design the LED-baseplate of a kind of superior performance.
Summary of the invention
The present invention is directed to the problem of the existence in background technology and the LED high gloss base of a kind of perfect heat-dissipating is provided The preparation technology of plate.
The technical scheme used to realize the object of the invention is: the preparation technology of a kind of LED high gloss substrate, Concrete preparation process is as follows:
1) preparation of complex sintering aids
By alumina powder 65～75 parts, copper powder 5～10 parts, calcined kaolin 15～20 parts, pearl fiber 5～10 parts, fluorine Change calcium 15～20 parts and be scattered in dehydrated alcohol formation mixed slurry, the most i.e. prepare complex sintering aids, wherein, described oxygen The mass volume ratio changing aluminium powder and dehydrated alcohol is 1g:5mL；
2) preparation of slurry
It is sequentially added into silicon nitride powder, tripolycyanamide 3～6 parts, cordierite powder 3～6 parts, the hexamethylene copper 3～5 of 50～60 parts Part, chromic acid 6～10 parts and step 1) complex sintering aids 6 for preparing～10 parts carry out wet ball grinding, ball milling 3～5 hours, carry out Vacuum stirring de-bubble, prepares slurry；
3) molding
By step 2) prepare slurry press-in die in, naturally placed gel process；Take out blank at 70～80 DEG C In temperature, it is dried process 3～5 hours；It is then placed in hot pressing die being sintered compacting, is 1200～1400 in temperature It is incubated 1～2 hour at DEG C, continues to improve temperature and be incubated 1～2 hour to 1400 DEG C～1700 DEG C, then cooling down obtains base Plate.
Beneficial effects of the present invention is as follows:
The present invention is by using suitable sintering method and choosing suitable sintering aid, it is achieved that the densification of sintered body Change, substantially increase the thermal conductivity of substrate；The sintering aid of the present invention can form the thing phase of low melting point, it is achieved liquid-phase sintering, fall Low firing temperature, promotes the densification of base substrate, adds hardness and the glossiness of substrate surface；The substrate heat conductivity of the present invention Greatly, heat resistance is excellent, and bending strength is high, it is to avoid the phenomenons such as bending, warpage occur.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1:
The preparation technology of the embodiment of the present invention a kind of LED high gloss substrate, concrete preparation process is as follows:
1) preparation of complex sintering aids
Alumina powder 65 parts, copper powder 5 parts, calcined kaolin 15 parts, pearl fiber 5 parts, 15 parts of calcium fluoride are scattered in nothing Water-ethanol is formed mixed slurry, the most i.e. prepares complex sintering aids, wherein, described alumina powder and the matter of dehydrated alcohol Amount volume ratio is 1g:5mL；
2) preparation of slurry
It is sequentially added into silicon nitride powder, tripolycyanamide 3 parts, 3 parts of cordierite powder, hexamethylene copper 3 parts, chromic acid 6 parts and the step of 50 parts Rapid 1) complex sintering aids 6 parts prepared carries out wet ball grinding, ball milling 3 hours, carries out vacuum stirring de-bubble, prepares slurry；
3) molding
By step 2) prepare slurry press-in die in, naturally placed gel process；Take out blank at 70～80 DEG C In temperature, it is dried process 3 hours；It is then placed in hot pressing die being sintered compacting, is 1200～1400 DEG C in temperature Lower insulation 1 hour, continues to improve temperature and is incubated 1 hour to 1400 DEG C～1700 DEG C, then cooling down obtains substrate.
Embodiment 2:
The preparation technology of the embodiment of the present invention a kind of LED high gloss substrate, concrete preparation process is as follows:
1) preparation of complex sintering aids
Alumina powder 75 parts, copper powder 10 parts, calcined kaolin 20 parts, pearl fiber 10 parts, 20 parts of calcium fluoride are scattered in Dehydrated alcohol is formed mixed slurry, the most i.e. prepares complex sintering aids, wherein, described alumina powder and dehydrated alcohol Mass volume ratio is 1g:5mL；
2) preparation of slurry
It is sequentially added into silicon nitride powder, tripolycyanamide 6 parts, 6 parts of cordierite powder, hexamethylene copper 5 parts, chromic acid 10 parts and the step of 60 parts Rapid 1) complex sintering aids 10 parts prepared carries out wet ball grinding, ball milling 5 hours, carries out vacuum stirring de-bubble, prepares slurry；
3) molding
By step 2) prepare slurry press-in die in, naturally placed gel process；Take out blank at 70～80 DEG C In temperature, it is dried process 5 hours；It is then placed in hot pressing die being sintered compacting, is 1200～1400 DEG C in temperature Lower insulation 2 hours, continues to improve temperature and is incubated 2 hours to 1400 DEG C～1700 DEG C, then cooling down obtains substrate.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this Equivalent structure or equivalence flow process that bright description is made convert, or are directly or indirectly used in other relevant technology necks Territory, is the most in like manner included in the scope of patent protection of the present invention.

Claims (1)

1. the LED preparation technology of high gloss substrate, it is characterised in that concrete preparation technology is as follows:
1) preparation of complex sintering aids
By alumina powder 65～75 parts, copper powder 5～10 parts, calcined kaolin 15～20 parts, pearl fiber 5～10 parts, calcium fluoride 15～20 parts are scattered in dehydrated alcohol formation mixed slurry, the most i.e. prepare complex sintering aids, wherein, described aluminium oxide Powder is 1g:5mL with the mass volume ratio of dehydrated alcohol；
2) preparation of slurry
It is sequentially added into silicon nitride powder, tripolycyanamide 3～6 parts, cordierite powder 3～6 parts, hexamethylene copper 3～5 parts, the chromium of 50～60 parts Acid 6～10 parts and step 1) prepare complex sintering aids 6～10 parts carry out wet ball grinding, ball milling 3～5 hours, carry out vacuum Stirring de-bubble, prepares slurry；
3) molding
By step 2) prepare slurry press-in die in, naturally placed gel process；Take out blank 70～80 DEG C of temperature In, it is dried process 3～5 hours；It is then placed in hot pressing die being sintered compacting, at temperature is 1200～1400 DEG C It is incubated 1～2 hour, continues to improve temperature and be incubated 1～2 hour to 1400 DEG C～1700 DEG C, then cooling down obtains substrate.
CN201610654918.7A 2016-08-11 2016-08-11 Preparation process of high-gloss substrate for LED Withdrawn CN106316408A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101260488A (en) * 2008-04-18 2008-09-10 哈尔滨工业大学 Silicon nitride ceramic particles enhancement aluminum-base composite material and preparing method thereof
CN102795841A (en) * 2011-05-24 2012-11-28 比亚迪股份有限公司 Alumina-based ceramic, ceramic radiating substrate and preparation method for ceramic radiating substrate
CN105254308A (en) * 2015-11-04 2016-01-20 苏州知瑞光电材料科技有限公司 Preparation method of ceramic cooling composite material
CN105272176A (en) * 2015-11-04 2016-01-27 苏州知瑞光电材料科技有限公司 High-power LED (Light-Emitting Diode) heat dissipation ceramic substrate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101260488A (en) * 2008-04-18 2008-09-10 哈尔滨工业大学 Silicon nitride ceramic particles enhancement aluminum-base composite material and preparing method thereof
CN102795841A (en) * 2011-05-24 2012-11-28 比亚迪股份有限公司 Alumina-based ceramic, ceramic radiating substrate and preparation method for ceramic radiating substrate
CN105254308A (en) * 2015-11-04 2016-01-20 苏州知瑞光电材料科技有限公司 Preparation method of ceramic cooling composite material
CN105272176A (en) * 2015-11-04 2016-01-27 苏州知瑞光电材料科技有限公司 High-power LED (Light-Emitting Diode) heat dissipation ceramic substrate

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Application publication date: 20170111