CN103334021B - Manufacturing process of micro-channel core body - Google Patents
Manufacturing process of micro-channel core body Download PDFInfo
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- CN103334021B CN103334021B CN201310262110.0A CN201310262110A CN103334021B CN 103334021 B CN103334021 B CN 103334021B CN 201310262110 A CN201310262110 A CN 201310262110A CN 103334021 B CN103334021 B CN 103334021B
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- woven fabrics
- channel core
- microchannel
- manufacturing process
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 47
- 239000000843 powder Substances 0.000 claims abstract description 25
- 238000000465 moulding Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000003054 catalyst Substances 0.000 claims abstract description 10
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 9
- 239000011261 inert gas Substances 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims description 9
- 238000004382 potting Methods 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 8
- 238000001311 chemical methods and process Methods 0.000 claims description 4
- 239000011368 organic material Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 238000002309 gasification Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 102000002151 Microfilament Proteins Human genes 0.000 description 3
- 108010040897 Microfilament Proteins Proteins 0.000 description 3
- 210000003632 microfilament Anatomy 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 239000001996 bearing alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
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Abstract
The invention discloses a manufacturing process of a micro-channel core body. The manufacturing process comprises the following steps of: A, arranging and placing meshy non-woven fabrics in a cavity body, wherein gaps are formed between the non-woven fabrics and the cavity body, among the non-woven fabrics, or by mesh holes in the non-woven fabrics; B, adding metal powder or nonmetal powder to the gaps, and applying pressure to thicken and mold the powder to obtain a thickened body after ultrasonic vibration or mechanical vibration; and C, after the step B, fusing or sintering the thickened body for molding in vacuum or in a protective atmosphere of inert gas to obtain a base body of the core body, and performing gasification on the non-woven fabrics for overflow or corroding the non-woven fabrics by a chemical method to form micro-channels in the base body of the core body, thus obtaining the micro-channel core body. By virtue of the manufacturing process, flat crossed micro-channels can be formed, second micro-channels with nanoscale can be formed through plastic deformation, a wall carrying function of a catalyst in the micro-channels can be realized, and corrosion-resistant and high-temperature-resistant alloy powder can be used to form the base body of the core body.
Description
Technical field
The present invention relates to a kind of micro-channel core manufacturing process.
Background technology
Up to now, the method for processing micro-channel core mostly adopts with the technological line of the processing methodes such as photoetching, micromachined, microetch, multifilament drawing, the three-dimensional write of laser chemistry, the assembling of paraffin acid etching, modular construction and micrographics transfer printing both at home and abroad; Its microchannel is made up with symmetrical another part after almost forming the microchannel of 1/2nd all in the plane again could form microchannel integral construction then, complete processing is complicated, tooling cost is high, and the geometric properties of microchannel is almost rectangle, trapezoidal and precision is difficult to ensure, the degree of depth of microchannel is also restricted simultaneously; And the internal surface of microchannel due to micro fabrication limitation, more coarse for its microchannel internal surface of some non-metallic material, and the trickle gap at its microchannel place of closing is difficult to make up, therefore, the demand that precisely still can not meet numerous areas further of the proterties of its microchannel geometry end face and further miniaturization, precision.
Separately have a kind of by arrangement microfilament, then it is made to solidify with the PDMS prepolymer space be cast between microfilament, finally carry out reeling off raw silk from cocoons and form the method for micro-channel core, although its technique is simple, but there is following defect: when forming intersection microchannel, because microfilament cross arrangement is always protruding at point of crossing place, so the microchannel that cast is formed after reeling off raw silk from cocoons can not keep original geometrical shape at point of crossing place, on the other hand on the Material selec-tion of core body matrix, still be difficult to corrosion-resistant at present, high temperature resistant, high voltage bearing alloy processes micro-channel core, make the range of application of microchannel limited.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides and a kind ofly form smooth intersection microchannel, the micro-channel core manufacturing process of applied range.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of micro-channel core manufacturing process of the present invention, comprises the steps:
A. be placed in cavity by netted non-woven fabrics with single or multiple lift, the mesh between non-woven fabrics and cavity or between non-woven fabrics, in non-woven fabrics forms space;
B. choose metal-powder or non-metal powder adds in space as potting compound, after ultrasonic vibration or mechanical type vibration, apply pressure and make it closely knit shaping, obtain compacting body;
C., after step B, by compacting body melt molding or sinter molding in a vacuum or in protection of inert gas atmosphere, core body matrix is obtained; If non-woven fabrics is not gasified totally spilling in melt molding or sinter molding process, then need to adopt chemical process to be eroded by non-woven fabrics, non-woven fabrics can form microchannel after eliminating in core body matrix, thus obtains micro-channel core.
As the improvement of technique scheme, the potting compound in described step B is organic materials, after step C, heats until make it soften, and adopt pressuring method to make its viscous deformation, to form micron order or nano level secondary microchannel to micro-channel core.
Further, after described step C, first micro-channel core is put into vessel vacuum-treat, then soak micro-channel core by required catalyst injector ware, make Catalyst Adsorption in the micro-pore of microchannel internal surface, carry function with the wall realizing microchannel inner catalyst.
Further, when the non-woven fabrics in described steps A is placed in cavity with multilayer, can be parallel to each other or intersect between the plane of non-woven fabrics place.
The invention has the beneficial effects as follows: the present invention is by being placed in cavity by netted non-woven fabrics with single or multiple lift, then choosing metal-powder or non-metal powder is poured in the space that the mesh between non-woven fabrics and cavity or between non-woven fabrics, in non-woven fabrics formed, make its closely knit shaping after, carry out melt molding or sinter molding to it, non-woven fabrics can obtain micro-channel core after eliminating.The present invention is owing to adopting netted non-woven fabrics, thus smooth intersection microchannel can be formed, netted non-woven fabrics can according to the profile design of the microchannel of required formation, and non-woven fabrics arbitrary arrangement in space can be met the different needs, especially, on the basis forming micro-channel core, microchannel viscous deformation can be made, forms nano level secondary microchannel; The wall of catalyzer in microchannel can be realized and carry function, to accelerate chemical reaction rate; Corrosion-resistant, high temperature resistant, high voltage bearing powdered alloy can be used to form core body matrix, widened range of application of the present invention.
Embodiment
A kind of micro-channel core manufacturing process of the present invention, comprises the steps:
A. be placed in cavity by netted non-woven fabrics with single or multiple lift, the mesh between non-woven fabrics and cavity or between non-woven fabrics, in non-woven fabrics forms space;
Netted non-woven fabrics can according to the profile design of the microchannel of required formation, and its mesh form can rounded, square or other special shapes.The technology formed due to non-woven fabrics in prior art is very ripe, does not repeat them here.
The spatial disposition of non-woven fabrics in cavity, single layer structure or multilayered structure can be formed, when arrangement forms multilayered structure, can be parallel to each other or intersect between the plane of non-woven fabrics place, different microchannels is constructed, to adapt to different demands by different permutation and combination.
B. choose metal-powder or non-metal powder adds in space as potting compound, after ultrasonic vibration or mechanical type vibration, apply pressure and make it closely knit shaping, obtain compacting body;
Potting compound can be chosen according to the user demand of micro-channel core, metal-powder or non-metal powder can be selected, metal-powder can be the tungstenalloy powder of corrosion resistant titanium alloy, Ni alloy powder, high strength, also can be the silver metal of high thermal conductivity, copper metal powder end etc.; Non-metal powder can be inorganic materials, as category of glass, ceramic-like, boron nitride, norbide class powder, also can be organic materials, as plastics powder etc.
C., after step B, by compacting body melt molding or sinter molding in a vacuum or in protection of inert gas atmosphere, core body matrix is obtained; If non-woven fabrics is not gasified totally spilling in melt molding or sinter molding process, then need to adopt chemical process to be eroded by non-woven fabrics, non-woven fabrics can form microchannel after eliminating in core body matrix, thus obtains micro-channel core.
If potting compound selects metal-powder or inorganic non-metallic powder, then adopt the method for compacting body melt molding in a vacuum or in protection of inert gas atmosphere, due in melt molding process, non-woven fabrics has gasified spilling, so can obtain micro-channel core after melt molding; If potting compound selects organic non-metal powder; then adopt the method for compacting body sinter molding in a vacuum or in protection of inert gas atmosphere; and non-woven fabrics does not gasify spilling in this process, then, after needing to adopt chemical process corrosion non-woven fabrics, just micro-channel core can be obtained.
The present invention have employed netted non-woven fabrics just, it can keep the smooth of point of crossing place, thus smooth intersection microchannel can be formed, the mechanical property of its material of microchannel adopting present invention process to be formed can keep isotropy, and the geometrical shape in its cross section and surface texture all can keep thermodynamic (al) stability.
In order to reduce the size of microchannel further, when potting compound in described step B is organic materials, after step C, micro-channel core is heated until make it soften, and adopt pressuring method to make its viscous deformation, stressed size can be executed to form micron order or nano level secondary microchannel by adjustment.
Because the present invention adopts metal-powder or non-metal powder sinter molding or melt molding, the microchannel internal surface of the micro-channel core formed has certain roughness, thus there is certain adsorptive power, after described step C, first micro-channel core is put into vessel vacuum-treat, then micro-channel core is soaked by required catalyst injector ware, make Catalyst Adsorption in the micro-pore of microchannel internal surface, carry function with the wall realizing microchannel inner catalyst, widen range of application of the present invention.
All features disclosed in this specification sheets, or the step in disclosed all methods or process, except the speciality mutually repelled and/or step, all can combine by any way, unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object, namely, unless specifically stated otherwise, each feature is an embodiment in a series of equivalence or similar characteristics.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a micro-channel core manufacturing process, is characterized in that, comprises the steps:
A. be placed in cavity by netted non-woven fabrics with single or multiple lift, the mesh between non-woven fabrics and cavity or between non-woven fabrics, in non-woven fabrics forms space;
B. choose metal-powder or non-metal powder adds in space as potting compound, after ultrasonic vibration or mechanical type vibration, apply pressure and make it closely knit shaping, obtain compacting body;
C., after step B, by compacting body melt molding or sinter molding in a vacuum or in protection of inert gas atmosphere, core body matrix is obtained; If non-woven fabrics is not gasified totally spilling in melt molding or sinter molding process, then need to adopt chemical process to be eroded by non-woven fabrics, non-woven fabrics can form microchannel after eliminating in core body matrix, thus obtains micro-channel core;
Potting compound in described step B is organic materials, after step C, heats until make it soften, and adopt pressuring method to make its viscous deformation, to form micron order or nano level secondary microchannel to micro-channel core.
2. according to a kind of micro-channel core manufacturing process described in claim 1, it is characterized in that: after described step C, first micro-channel core is put into vessel vacuum-treat, then micro-channel core is soaked by required catalyst injector ware, make Catalyst Adsorption in the micro-pore of microchannel internal surface, carry function with the wall realizing microchannel inner catalyst.
3. according to a kind of micro-channel core manufacturing process described in claim 1, it is characterized in that: when the non-woven fabrics in described steps A is placed in cavity with multilayer, can be parallel to each other or intersect between the plane of non-woven fabrics place.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310262110.0A CN103334021B (en) | 2013-06-27 | 2013-06-27 | Manufacturing process of micro-channel core body |
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| CN201310262110.0A CN103334021B (en) | 2013-06-27 | 2013-06-27 | Manufacturing process of micro-channel core body |
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| CN103334021B true CN103334021B (en) | 2015-05-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105127417B (en) * | 2015-09-17 | 2018-09-11 | 上海交通大学 | A kind of the metal powder electricity auxiliary method for press forming and device of microchannel structure |
| CN105710376B (en) * | 2016-04-05 | 2018-07-10 | 华南理工大学 | A kind of microchannel manufacturing method being in harmony certainly based on surface tension and its device |
| CN108558408B (en) * | 2018-06-05 | 2020-12-01 | 李钰龙 | Preparation method of integrated microchannel plate |
| CN109095927A (en) * | 2018-08-07 | 2018-12-28 | 山东金德新材料有限公司 | A kind of pressureless sintering silicon carbide microchannel reactor chip and preparation method thereof |
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| KR100193356B1 (en) * | 1994-03-31 | 1999-06-15 | 이사오 우치가사키 | Method of producing a porous body |
| JP4797364B2 (en) * | 2004-11-18 | 2011-10-19 | 三菱マテリアル株式会社 | Composite metal porous body and method for producing the same |
| CN100998940B (en) * | 2006-01-10 | 2012-05-30 | 中国人民解放军63971部队 | Preparation method of CO catalytic material |
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