CN106774750B - A kind of laptop heat radiating type ceramics mainboard - Google Patents

A kind of laptop heat radiating type ceramics mainboard Download PDF

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Publication number
CN106774750B
CN106774750B CN201611243574.7A CN201611243574A CN106774750B CN 106774750 B CN106774750 B CN 106774750B CN 201611243574 A CN201611243574 A CN 201611243574A CN 106774750 B CN106774750 B CN 106774750B
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porous ceramic
ceramic substrate
weight
mixed
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CN106774750A (en
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陈婉莹
陈炬
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Zhejiang Gongshang University
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Zhejiang Gongshang University
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/20—Cooling means
    • G06F1/203—Cooling means for portable computers, e.g. for laptops
    • C—CHEMISTRY; METALLURGY
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    • C04B33/00—Clay-wares
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    • C04B33/36—Reinforced clay-wares
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    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/063—Preparing or treating the raw materials individually or as batches
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    • G06F1/16—Constructional details or arrangements
    • G06F1/18—Packaging or power distribution
    • G06F1/183—Internal mounting support structures, e.g. for printed circuit boards, internal connecting means
    • G06F1/184—Mounting of motherboards
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    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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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
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
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  • Porous Artificial Stone Or Porous Ceramic Products (AREA)

Abstract

A kind of laptop heat radiating type ceramics mainboard, including a porous ceramic substrate, it is adhered to the epoxy resin layer of porous ceramic substrate upper surface and is adhered to the metal layer of epoxy resin layer upper surface, several vertical through holes and oblique through-hole are distributed in the porous ceramic substrate, wherein, the upper and lower surface of vertical through holes perforation porous ceramic substrate, oblique through-hole is blind hole, and it is upwardly extended from the edge of porous ceramic substrate to the inner inclination of porous ceramic substrate, its open end is located at the edge and lower surface of porous ceramic substrate, the vertical through holes are connected with oblique through-hole, to form netted heat dissipation channel in porous ceramic substrate.Heat radiating material of the invention is epoxy resin layer and metal layer to be then arranged on it, due to being densely covered with netted heat dissipation channel in porous ceramic substrate, so that the heat dissipation performance of substrate be greatly enhanced using porous ceramic substrate as substrate.

Description

A kind of laptop heat radiating type ceramics mainboard
Technical field
The present invention relates to the desktop computer mainboard of computer field, specifically a kind of laptop heat dissipation Type ceramics mainboard.
Background technique
Computer is commonly called as computer, is a kind of electronic computer device for supercomputing, can carry out numerical value calculating, and can To carry out logic calculation, also have the function of store-memory, is that can be run according to program, it is automatic, high speed processing mass data Intelligent electronic device is modernized, is made of hardware system and software systems, the computer for being fitted without any software is referred to as naked Machine.
Mainboard is the base " stone " of computer, and one piece of mainboard is mainly made of the various components above wiring board and it, line Road plate is generally epoxy resin printed wiring board, and the main epoxy resin copper-clad plate of substrate is passed through by printing " generation " route Lamination copper-clad plate just becomes wiring board.And the important operation hardware of computer is essentially all to be arranged based on mainboard.
Heat can be generated in the CPU of computer and other parts at high speeds operation process, if these heats cannot timely dissipate Hair, then can reduce the processing capacity of CPU, or even cause the damage of CPU and other component；Therefore, existing notebook computer Often all configuration fans radiate, it is therefore an objective to take in other media the CPU heat generated to, cpu temperature is controlled one Within a stability range.
It is made since the mainboard material of existing laptop is substantially all of epoxy resin or glass fibre, even if adopting Being cooled down with the radiating mode of said fans, effect is also unsatisfactory, under laptop high-speed cruising, the temperature of CPU Degree still can remain high.
Summary of the invention
To solve the problems, such as that existing main board for notebook computer thermal diffusivity is bad, the present invention provides a kind of laptop use Heat radiating type ceramics mainboard, the ceramics mainboard be using porous ceramic substrate as substrate, then on it setting epoxy resin layer and Metal layer, due to being densely covered with netted heat dissipation channel in porous ceramic substrate, so that heat dissipation performance be greatly enhanced.
The present invention to solve above-mentioned technical problem used by technical solution are as follows: a kind of laptop heat radiating type ceramics Mainboard including a porous ceramic substrate, is adhered to the epoxy resin layer of porous ceramic substrate upper surface and is adhered to asphalt mixtures modified by epoxy resin Several vertical through holes and oblique through-hole are distributed in the porous ceramic substrate in the metal layer of rouge layer upper surface, wherein vertical logical Hole penetrates through the upper and lower surface of porous ceramic substrate, and oblique through-hole is blind hole, and from the edge of porous ceramic substrate to porous ceramics The inner inclination of substrate upwardly extends, and open end is located at the edge and lower surface of porous ceramic substrate, the vertical through holes with Oblique through-hole is connected, to form netted heat dissipation channel in porous ceramic substrate；
The porous ceramic substrate is by major ingredient, the perforating agent of major ingredient weight 9-10%, the additive of major ingredient weight 6-7% and master The aluminum filament of material weight 17-18% and diameter no more than 1mm is fired, and according to weight ratio, the major ingredient is by 22-24 parts The alumina powder compositions of clay, 18-20 parts of quartz sand and 10-12 parts, perforating agent by 10-12 parts silicon carbide, 2-3 parts Paris white, 6-7 parts of aquamaine mountain flour and 4-5 parts of sepiolite cashmere powder mix, additive by 7-8 parts borax, 3-4 parts Magnesia, 3-4 parts of diatomite, 1-2 parts of wastewaters with modified calcium sulfate whiskers and 5-6 parts of modification silicon powder mix, it is described Wastewaters with modified calcium sulfate whiskers is that commercial sulfuric acid calcium pyroborate and the surface modifier I of its weight 3-5% are mixed to get, and the surface is modified Agent I is mixed by barium chloride and KH550 according to the ratio of weight ratio 3-4:30；The modified silicon powder is by silicon powder and its The surface modifier II of weight 3-5% is mixed to get, and the surface modifier II is by barium hydroxide, sodium carbonate and KH550 according to weight The ratio than 3-4:1-2:30 is measured to mix.
Also containing 1-2 parts of vermiculite power in the perforating agent.
Also containing 3-4 parts of simple substance silica flour in the additive.
Above-mentioned laptop heat radiating type ceramics mainboard, the production method of the porous ceramic substrate, including following step It is rapid:
1) wastewaters with modified calcium sulfate whiskers and modified silicon powder are prepared respectively, it is spare；
The wastewaters with modified calcium sulfate whiskers is that commercial sulfuric acid calcium pyroborate and the surface modifier I of its weight 3-5% are mixed to get, The surface modifier I is mixed by barium chloride and KH550 according to the ratio of weight ratio 3-4:30；
The modified silicon powder is to be mixed to get the surface modifier II of silicon powder and its weight 3-5%, and the surface changes Property agent II is mixed by barium hydroxide, sodium carbonate and KH550 according to the ratio of weight ratio 3-4:1-2:30；
2) mixing of each raw material and grinding for weighing composition major ingredient and perforating agent respectively according to above-mentioned requirement do not surpass to fineness 100 microns are crossed, so that major ingredient powder and perforating agent powder is made, it is spare；
Weigh the composition borax of additive, magnesia, diatomite, modified made from step 1) respectively according to above-mentioned requirement Modified silicon powder made from calcium sulfate crystal whiskers and step 1), then by grinding after the mixing of borax, magnesia and diatomite to partial size It is uniformly mixed no more than 200 microns, then with wastewaters with modified calcium sulfate whiskers, modified silicon powder, obtains additive, it is spare；
The aluminum filament that diameter is no more than 1mm is weighed, it is spare；
3) major ingredient powder made from step 2, perforating agent powder and additive are mixed, major ingredient powder weight is then added thereto The mix liquid mix of 30-35% is uniform, obtains mixing wet-milling, spare；
The mix liquid be glycerol, cellulose, tapioca and water according to the ratio mixing that weight ratio is 3:2:1:5 and At；
4) the weighed part aluminum filament of step 2 is taken vertically to arrange, then by the inclination of remaining aluminum filament and vertical row The aluminum filament of cloth is fixedly connected, so that the network skeleton being made of aluminum filament is formed, it is spare；
In the network skeleton, the aluminum filament of arrangement is tilted towards the end position on the outside of network skeleton lower than another End；
5) mixing wet-milling made from step 3) is filled into network skeleton made from step 4) and is pressed into sheet-shaped blank, It is spare；
6) sheet-shaped blank made from step 5) is sintered, porous ceramic substrate is obtained after natural cooling；
The sintering is divided into preheating section, warming-up section and furnace zone three parts, wherein preheating section is to instigate in-furnace temperature from normal Temperature is uniformly increased to 350 DEG C in 3h, and keeps temperature 1-2h, in the process, oxygen content in furnace is kept to be not higher than 4%；
The warming-up section refers to, in-furnace temperature is made uniformly to be increased to 950 DEG C in 4h from 350 DEG C, and keeps temperature 1-2h, In the process, oxygen content in furnace is kept to be not less than 45%；
The furnace zone refers to, in-furnace temperature is made uniformly to be increased to 1750 DEG C in 2h from 950 DEG C, and keeps temperature 3- 4h keeps oxygen content in furnace to be not less than 35% in the process.
In the present invention, the 10-15% with a thickness of porous ceramic matrix plate thickness of every layer of epoxy resin layer, metal layer is conventional Thickness, and preferred layers of copper.
In the present invention, using conventional raw material clay, quartz sand and the alumina powder of firing ceramics as major ingredient, wherein being mixed into Silicon carbide, Paris white, aquamaine mountain flour and sepiolite cashmere powder contain in the ceramics after both can ensure that firing as perforating agent Opening stomata (or open pore), nor will affect its intensity；Silicon carbide is easy to happen in high temperature oxidative atmosphere Oxidation reaction: SiC+2O2→CO2+SiO2, the reaction start temperature is higher, and 1000 DEG C start obvious oxidation, and particle is thinner, then oxygen It is faster to change speed, reaction product CO2Evolution be easy to cause ceramic body surface to form open pore, and reaction product SiO2Tool There is greater activity, mullite is generated with oxidation reactive aluminum, to form mullite reinforcement in ceramics；Kyanite therein is thin Powder both can ensure that and generates more mullite phase, guarantee the mechanical strength of product, kyanite decomposes since 1100 DEG C or so, Generate mullite and SiO2, significant decomposition and inversion after 1300 DEG C, since mullitization reaction is accompanied by the volume of 16-18% Expansion, therefore the also fillable hole generated due to Oxidation of SiC, make single hole become smaller, and whole porosity reduces, and The shape and distribution of ceramic inner pore can be changed；Calcium carbonate decomposes during the sintering process, while generating stomata, the oxygen of generation Change the progress that the borax in calcium and additive is capable of acceleration of sintering, sintering temperature is effectively reduced；And during the sintering process, it aoxidizes Hercynite structure can be generated in aluminium and iron oxide, and magnesia can form magnesium aluminate spinel with alumina sintering, to increase The intensity of strong ceramic wafer；Mix is carried out with special mix liquid before firing, so that its stickiness and plasticity are enhanced, this During sample makes perforating agent be decomposed to form stomata at high temperature, it is greatly lowered since stomata and the expansion of aquamaine mountain flour are led The defects of crackle of cause；
In the present invention, a frame can be made, to first fix the aluminum filament vertically arranged, is then being arranged The aluminum filament of tilt distribution, the aluminum filament for tilting arrangement can be with appropriate longer, but the aluminum filament vertically arranged Length is finally to want porous ceramic matrix plate thickness obtained identical with final；
During the sintering process, aluminum filament melts and flows out substrate, so that network-like heat dissipation channel is formed in substrate, and Some molten aluminum melted can be adhered on the inner wall of heat dissipation channel, so that the purpose of firm heat dissipation channel is played, moreover, Also it can enhance the conduction of heat；
In the present invention, the epoxy resin layer can select conventional epoxy resin to make, and can also use following spy The epoxy resin of different ingredient makes: according to weight ratio, the epoxy resin layer by 5 parts bisphenol A type epoxy resin, 1 part Aliphatic epoxy resin, 0.5 part of modified Nano magnesia crystal whisker, 0.7 part of modified manometer silicon dioxide and 0.8 part of modification Silica solution is made, and the modified Nano magnesia crystal whisker is to change the surface of commercially available nano magnesia whisker and its weight 3-5% Property agent I is mixed to get, and surface modifier I is mixed by barium chloride and KH550 according to the ratio of weight ratio 3-4:30, described to change Property nano silica be to be mixed to get commercially available nano silica and the surface modifier II of its weight 3-5%, surface is modified Agent II is mixed by barium hydroxide, sodium carbonate and KH550 according to the ratio of weight ratio 3-4:1-2:30；The modified silicasol Be the silicon powder that silica solution weight 2-3% is sequentially added in commercially available silica solution, the crystal whisker of hexa potassium titanate of silica solution weight 1-2% and The sodium acetate of silica solution weight 0.8-1% then stirs the mixture that 1-2h is obtained under the conditions of 70-80 DEG C；
It can also be containing 0.3 part of glass fiber in above-mentioned epoxy resin layer；
It can also be containing 0.1 part of nano aluminium oxide in above-mentioned epoxy resin layer；
The preparation method of above-mentioned epoxy resin layer the following steps are included:
1) modified Nano magnesia crystal whisker, modified manometer silicon dioxide and modified silicasol are prepared respectively, it is spare；
The modified Nano magnesia crystal whisker is that the surface of commercially available nano magnesia whisker and its weight 3-5% is modified Agent I is mixed to get, and surface modifier I is mixed by barium chloride and KH550 according to the ratio of weight ratio 3-4:30；
The modified manometer silicon dioxide is to mix commercially available nano silica and the surface modifier II of its weight 3-5% Conjunction obtains, surface modifier II by barium hydroxide, sodium carbonate and KH550 according to weight ratio 3-4:1-2:30 ratio mixing and At；
The modified silicasol is the silicon powder that silica solution weight 2-3% is sequentially added in commercially available silica solution, silica solution weight The crystal whisker of hexa potassium titanate of 1-2% and the sodium acetate of silica solution weight 0.8-1% are measured, then 1-2h is stirred under the conditions of 70-80 DEG C and obtains The mixture arrived；
2) each component is weighed according to aforementioned proportion, after then melting bisphenol A type epoxy resin, is added weighs thereto Aliphatic epoxy resin, stir after melting completely, then thereto be added step 1) made from modified Nano magnesia crystal whisker, Modified manometer silicon dioxide and modified silicasol, cooling and solidifying obtains epoxy resin layer after mixing evenly.
At this point, epoxy resin layer by bisphenol A type epoxy resin, aliphatic epoxy resin, modified Nano magnesia crystal whisker, change Property nano silica and modified silicasol are made, and improve the toughness of material.It is brilliant that modified Nano magnesia is added in system Palpus, modified silicasol particle and modified manometer silicon dioxide, can substantially improve the mechanical property and thermal property of material, simultaneously It has also been found that raising and product of the addition of modified silicasol particle to the tensile property of component mixing, product in preparation process Final interpenetrating form it is advantageous；
Modified manometer silicon dioxide of the invention is mixed as catalyst using barium hydroxide and sodium carbonate by nanoscale SiO2The surface of particle, to contain a certain number of oxygen-containing functional groups, can be increased nanoscale SiO by the effect of hydroxyl2 The related surface compatability of particle, in nanoscale SiO2When particle and remaining raw material are sufficiently mixed, because of SiO2Particle very little, and Large specific surface area, the structure of imperceptibility increase rest materials and its contact area, make SiO2Particle can be in material It is evenly dispersed, consequently facilitating SiO2Chemical bonding or physical bond occurs at high temperature with remaining substance.In addition, evenly dispersed Nanoscale SiO2It is equivalent to " anchor point ", the reinforcing matrix generated under hot environment can be made in connection, by external force Under percussion, the effect of " stress concentration " can be generated, so that surrounding some matrixes " surrender " and absorbing more change Furthermore shape function can also generate " pinning-is climbed up and over " effect, increase the crackle resistance suffered in extension, consume work of deformation, To make its toughness increase.
The utility model has the advantages that compared with existing notebook mainboard material, the invention has the following advantages that
1) heat radiating material of the invention be using porous ceramic substrate as substrate, then on it setting epoxy resin layer and Metal layer, due to being densely covered with netted heat dissipation channel in porous ceramic substrate, so that the heat dissipation performance of substrate be greatly enhanced；
2) present invention first builds network skeleton as skeleton using aluminum filament when making porous ceramic substrate, then again The mixing wet-milling of firing ceramics is filled, so during the sintering process, aluminum filament melts and flow out matrix, thus the shape in matrix At network-like heat dissipation channel, and some molten aluminum melted can be adhered on the inner wall of heat dissipation channel, to play firm The purpose of heat dissipation channel, moreover, can also enhance the conduction of heat；
3) in the present invention, porous ceramic substrate is made with the conventional raw material clay, quartz sand and alumina powder of firing ceramics For major ingredient, wherein being mixed into silicon carbide, Paris white, aquamaine mountain flour and sepiolite cashmere powder as perforating agent, after both can ensure that firing Ceramics in containing some opening stomatas (or open pore), nor will affect its intensity.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Appended drawing reference: 1, porous ceramic substrate, 101, vertical through holes, 102, oblique through-hole, 2, epoxy resin layer, 3, metal Layer.
Specific embodiment
As shown, a kind of laptop heat radiating type ceramics mainboard, including a porous ceramic substrate 1, be adhered to it is more The epoxy resin layer 2 of 1 upper surface of hole ceramic substrate and the metal layer 3 for being adhered to 2 upper surface of epoxy resin layer, the porous pottery Several vertical through holes 101 and oblique through-hole 102 are distributed in porcelain substrate (1), wherein vertical through holes 101 penetrate through porous ceramic matrix The upper and lower surface of plate 1, oblique through-hole 102 are blind hole, and from the edge of porous ceramic substrate 1 to the inside of porous ceramic substrate 1 Extension is tilted upward, open end is located at the edge and lower surface of porous ceramic substrate 1, and the vertical through holes 101 are led to oblique Hole 102 is connected, to form netted heat dissipation channel in porous ceramic substrate 1；
The porous ceramic substrate is by major ingredient, the perforating agent of major ingredient weight 9-10%, the additive of major ingredient weight 6-7% and master The aluminum filament of material weight 17-18% and diameter no more than 1mm is fired, and according to weight ratio, the major ingredient is by 22-24 parts The alumina powder compositions of clay, 18-20 parts of quartz sand and 10-12 parts, perforating agent by 10-12 parts silicon carbide, 2-3 parts Paris white, 6-7 parts of aquamaine mountain flour and 4-5 parts of sepiolite cashmere powder mix, additive by 7-8 parts borax, 3-4 parts Magnesia, 3-4 parts of diatomite, 1-2 parts of wastewaters with modified calcium sulfate whiskers and 5-6 parts of modification silicon powder mix, it is described Wastewaters with modified calcium sulfate whiskers is that commercial sulfuric acid calcium pyroborate and the surface modifier I of its weight 3-5% are mixed to get, and the surface is modified Agent I is mixed by barium chloride and KH550 according to the ratio of weight ratio 3-4:30；The modified silicon powder is by silicon powder and its The surface modifier II of weight 3-5% is mixed to get, and the surface modifier II is by barium hydroxide, sodium carbonate and KH550 according to weight The ratio than 3-4:1-2:30 is measured to mix.
Above-mentioned laptop heat radiating type ceramics mainboard, the production method of the porous ceramic substrate, including following step It is rapid:
1) wastewaters with modified calcium sulfate whiskers and modified silicon powder are prepared respectively, it is spare；
The wastewaters with modified calcium sulfate whiskers is that commercial sulfuric acid calcium pyroborate and the surface modifier I of its weight 3-5% are mixed to get, The surface modifier I is mixed by barium chloride and KH550 according to the ratio of weight ratio 3-4:30；
The modified silicon powder is to be mixed to get the surface modifier II of silicon powder and its weight 3-5%, and the surface changes Property agent II is mixed by barium hydroxide, sodium carbonate and KH550 according to the ratio of weight ratio 3-4:1-2:30；
2) mixing of each raw material and grinding for weighing composition major ingredient and perforating agent respectively according to above-mentioned requirement do not surpass to fineness 100 microns are crossed, so that major ingredient powder and perforating agent powder is made, it is spare；
Weigh the composition borax of additive, magnesia, diatomite, modified made from step 1) respectively according to above-mentioned requirement Modified silicon powder made from calcium sulfate crystal whiskers and step 1), then by grinding after the mixing of borax, magnesia and diatomite to partial size It is uniformly mixed no more than 200 microns, then with wastewaters with modified calcium sulfate whiskers, modified silicon powder, obtains additive, it is spare；
The aluminum filament that diameter is no more than 1mm is weighed, it is spare；
3) major ingredient powder made from step 2, perforating agent powder and additive are mixed, major ingredient powder weight is then added thereto The mix liquid mix of 30-35% is uniform, obtains mixing wet-milling, spare；
The mix liquid be glycerol, cellulose, tapioca and water according to the ratio mixing that weight ratio is 3:2:1:5 and At；
4) the weighed part aluminum filament of step 2 is taken vertically to arrange, then by the inclination of remaining aluminum filament and vertical row The aluminum filament of cloth is fixedly connected, so that the network skeleton being made of aluminum filament is formed, it is spare；
In the network skeleton, the aluminum filament of arrangement is tilted towards the end position on the outside of network skeleton lower than another End；
5) mixing wet-milling made from step 3) is filled into network skeleton made from step 4) and is pressed into sheet-shaped blank, It is spare；
6) sheet-shaped blank made from step 5) is sintered, porous ceramic substrate is obtained after natural cooling；
The sintering is divided into preheating section, warming-up section and furnace zone three parts, wherein preheating section is to instigate in-furnace temperature from normal Temperature is uniformly increased to 350 DEG C in 3h, and keeps temperature 1-2h, in the process, oxygen content in furnace is kept to be not higher than 4%；
The warming-up section refers to, in-furnace temperature is made uniformly to be increased to 950 DEG C in 4h from 350 DEG C, and keeps temperature 1-2h, In the process, oxygen content in furnace is kept to be not less than 45%；
The furnace zone refers to, in-furnace temperature is made uniformly to be increased to 1750 DEG C in 2h from 950 DEG C, and keeps temperature 3- 4h keeps oxygen content in furnace to be not less than 35% in the process.
The above are basic embodiments of the invention, further can be improved, optimized and limited on the basis of above:
Such as, the porous ceramic substrate by major ingredient, the perforating agent of major ingredient weight 9%, major ingredient weight 6% additive and major ingredient The aluminum filament of weight 17% and diameter no more than 1mm is fired, according to weight ratio, the major ingredient by 22 parts clay, 18 parts Quartz sand and 10 parts alumina powder composition, perforating agent is by 10 parts of silicon carbide, 2 parts of Paris white, 6 parts of kyanite Powder and 4 parts of sepiolite cashmere powder mix, and additive is changed by 7 parts of borax, 3 parts of magnesia, 3 parts of diatomite, 1 part Property calcium sulfate crystal whiskers and 5 parts of modification silicon powder mix, the wastewaters with modified calcium sulfate whiskers be commercial sulfuric acid calcium pyroborate and its The surface modifier I of weight 3% is mixed to get, and the surface modifier I is by barium chloride and KH550 according to the ratio of weight ratio 3:30 Example mixes；The modified silicon powder is to be mixed to get silicon powder and the surface modifier II of its weight 3%, the surface Modifying agent II is mixed by barium hydroxide, sodium carbonate and KH550 according to the ratio of weight ratio 3:1:30；
For another example, the porous ceramic substrate by major ingredient, the perforating agent of major ingredient weight 10%, major ingredient weight 7% additive and The aluminum filament of major ingredient weight 18% and diameter no more than 1mm is fired, according to weight ratio, the major ingredient by 24 parts clay, 20 parts of quartz sand and 12 parts of alumina powder composition, perforating agent is by 12 parts of silicon carbide, 3 parts of Paris white, 7 parts of indigo plant Spar powder and 5 parts of sepiolite cashmere powder mix, and additive is by 8 parts of borax, 4 parts of magnesia, 4 parts of diatomite, 2 parts Wastewaters with modified calcium sulfate whiskers and 6 parts of modification silicon powder mix, the wastewaters with modified calcium sulfate whiskers be commercial sulfuric acid calcium pyroborate It is mixed to get with the surface modifier I of its weight 5%, the surface modifier I is by barium chloride and KH550 according to weight ratio 4:30 Ratio mix；The modified silicon powder is to be mixed to get silicon powder and the surface modifier II of its weight 5%, described Surface modifier II is mixed by barium hydroxide, sodium carbonate and KH550 according to the ratio of weight ratio 4:2:30；
For another example, the porous ceramic substrate by major ingredient, the perforating agent of major ingredient weight 9.5%, major ingredient weight 6.5% additive Aluminum filament with major ingredient weight 17.5% and diameter no more than 1mm is fired, and according to weight ratio, the major ingredient is by 23 parts The alumina powder composition of clay, 19 parts of quartz sand and 11 parts, perforating agent by 11 parts of silicon carbide, 2.5 parts of Paris white, 6.5 parts of aquamaine mountain flour and 4.5 parts of sepiolite cashmere powder mix, additive by 7.5 parts of borax, 3.5 parts of magnesia, 3.5 parts of diatomite, 1.5 parts of wastewaters with modified calcium sulfate whiskers and 5.5 parts of modification silicon powder mix, the modified calcium sulfate Whisker is that commercial sulfuric acid calcium pyroborate and the surface modifier I of its weight 4% are mixed to get, the surface modifier I by barium chloride with KH550 is mixed according to the ratio of weight ratio 3.5:30；The modified silicon powder is by the surface of silicon powder and its weight 4% Modifying agent II is mixed to get, and the surface modifier II is by barium hydroxide, sodium carbonate and KH550 according to weight ratio 3.5:1.5:30 Ratio mix；
It for another example, can also be containing 1-2 parts of vermiculite power in the perforating agent.
Finally, can also be containing 3-4 parts of simple substance silica flour in the additive.

Claims (3)

1. a kind of laptop heat radiating type ceramics mainboard, it is characterised in that: including a porous ceramic substrate (1), be adhered to The epoxy resin layer (2) of porous ceramic substrate (1) upper surface and the metal layer (3) for being adhered to epoxy resin layer (2) upper surface, Several vertical through holes (101) and oblique through-hole (102) are distributed in the porous ceramic substrate (1), wherein vertical through holes (101) upper and lower surface of porous ceramic substrate (1) is penetrated through, oblique through-hole (102) is blind hole, and from porous ceramic substrate (1) Edge is upwardly extended to the inner inclination of porous ceramic substrate (1), and open end is located at the edge of porous ceramic substrate (1) under Surface, the vertical through holes (101) are connected with oblique through-hole (102), to form netted dissipate in porous ceramic substrate (1) The passage of heat；
The porous ceramic substrate (1) is by major ingredient, the perforating agent of major ingredient weight 9-10%, the additive of major ingredient weight 6-7% and master The aluminum filament of material weight 17-18% and diameter no more than 1mm is fired, and according to weight ratio, the major ingredient is by 22-24 parts The alumina powder compositions of clay, 18-20 parts of quartz sand and 10-12 parts, perforating agent by 10-12 parts silicon carbide, 2-3 parts Paris white, 6-7 parts of aquamaine mountain flour and 4-5 parts of sepiolite cashmere powder mix, additive by 7-8 parts borax, 3-4 parts Magnesia, 3-4 parts of diatomite, 1-2 parts of wastewaters with modified calcium sulfate whiskers and 5-6 parts of modification silicon powder mix, it is described Wastewaters with modified calcium sulfate whiskers is that commercial sulfuric acid calcium pyroborate and the surface modifier I of its weight 3-5% are mixed to get, and the surface is modified Agent I is mixed by barium chloride and KH550 according to the ratio of weight ratio 3-4:30；The modified silicon powder is by silicon powder and its The surface modifier II of weight 3-5% is mixed to get, and the surface modifier II is by barium hydroxide, sodium carbonate and KH550 according to weight The ratio than 3-4:1-2:30 is measured to mix；
The production method of the porous ceramic substrate (1), comprising the following steps:
1) wastewaters with modified calcium sulfate whiskers and modified silicon powder are prepared respectively, it is spare；
The wastewaters with modified calcium sulfate whiskers is that commercial sulfuric acid calcium pyroborate and the surface modifier I of its weight 3-5% are mixed to get, described Surface modifier I is mixed by barium chloride and KH550 according to the ratio of weight ratio 3-4:30；
The modified silicon powder is to be mixed to get the surface modifier II of silicon powder and its weight 3-5%, the surface modifier II is mixed by barium hydroxide, sodium carbonate and KH550 according to the ratio of weight ratio 3-4:1-2:30；
2) mixing of each raw material and grinding to fineness for weighing composition major ingredient and perforating agent respectively are no more than 100 microns, to be made Major ingredient powder and perforating agent powder, it is spare；
The composition borax of additive, magnesia, diatomite, wastewaters with modified calcium sulfate whiskers and step 1) made from step 1) are weighed respectively Modified silicon powder obtained, then by borax, magnesia and diatomite mix after grinding to partial size be no more than 200 microns, then with Wastewaters with modified calcium sulfate whiskers, modified silicon powder are uniformly mixed, and obtain additive, spare；
The aluminum filament that diameter is no more than 1mm is weighed, it is spare；
3) major ingredient powder made from step 2, perforating agent powder and additive are mixed, major ingredient powder weight 30- is then added thereto 35% mix liquid mix is uniform, obtains mixing wet-milling, spare；
The mix liquid is that glycerol, cellulose, tapioca and water are mixed according to the ratio that weight ratio is 3:2:1:5；
4) it takes the weighed part aluminum filament of step 2 vertically to arrange, then arranges by the inclination of remaining aluminum filament and vertically Aluminum filament is fixedly connected, so that the network skeleton being made of aluminum filament is formed, it is spare；
In the network skeleton, the aluminum filament for tilting arrangement is lower than the other end towards the end position on the outside of network skeleton；
5) mixing wet-milling made from step 3) is filled into network skeleton made from step 4) and is pressed into sheet-shaped blank, it is standby With；
6) sheet-shaped blank made from step 5) is sintered, obtains porous ceramic substrate (1) after natural cooling；
The sintering is divided into preheating section, warming-up section and furnace zone three parts, wherein preheating section is that in-furnace temperature is instigated to exist from room temperature 3h is uniformly increased to 350 DEG C, and keeps temperature 1-2h, in the process, oxygen content in furnace is kept to be not higher than 4%；
The warming-up section refers to, in-furnace temperature is made uniformly to be increased to 950 DEG C in 4h from 350 DEG C, and keeps temperature 1-2h, herein In the process, oxygen content in furnace is kept to be not less than 45%；
The furnace zone refers to, in-furnace temperature is made uniformly to be increased to 1750 DEG C in 2h from 950 DEG C, and keeps temperature 3-4h, During this, oxygen content in furnace is kept to be not less than 35%.
2. a kind of laptop according to claim 1 heat radiating type ceramics mainboard, it is characterised in that: the perforating agent In also containing 1-2 parts of vermiculite power.
3. a kind of laptop according to claim 1 heat radiating type ceramics mainboard, it is characterised in that: the additive In also containing 3-4 parts of simple substance silica flour.
CN201611243574.7A 2016-12-29 2016-12-29 A kind of laptop heat radiating type ceramics mainboard Expired - Fee Related CN106774750B (en)

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