CN105236826A - Preparation method of thermo-conductive insulation composite material - Google Patents
Preparation method of thermo-conductive insulation composite material Download PDFInfo
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- CN105236826A CN105236826A CN201510721419.0A CN201510721419A CN105236826A CN 105236826 A CN105236826 A CN 105236826A CN 201510721419 A CN201510721419 A CN 201510721419A CN 105236826 A CN105236826 A CN 105236826A
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Abstract
The invention discloses a preparation method of a thermo-conductive insulation composite material. According to the method, a thermoplastic phenolic resin solution is mixed with chromite sand or silicon carbide ceramsite, such that a layer of solid phenolic resin film is formed on the surface of chromite sand or silicon carbide ceramsite; coated sand or coated ceramsite is obtained through crushing and sieving; and the coated sand or coated ceramsite is poured into a mold, and is subjected to hot-press curing molding, such that the thermo-conductive insulation composite material is obtained. The thermo-conductive insulation composite material preparation method has the advantages of simple preparation process and low preparation cost. The prepared thermo-conductive insulation composite material has good thermo-conductive and insulating performances, good processing performance and excellent mechanical performances. The material is especially suitable for current electronic components.
Description
Technical field
The present invention relates to a kind of composite material and preparation method thereof, particularly relate to a kind of heat conductive insulating composite material and preparation method thereof.
Background technology
In recent years, along with the fast development of microelectronics integrated technology and package technique, electronic component, logical circuit operating frequency sharply increase, and semi-conductor Working environment is to high temperature future development, and the accumulation of amount of heat easily causes shortened equipment life, and efficiency reduces.Therefore, the material requirements used in electronic devices and components has high thermal conductivity.The heat conductive insulating matrix material adopted both at home and abroad at present mainly comprises Heat Conductive Insulation Adhesive, heat conductive insulating rubber, heat conductive insulating Embedding Material, moulded heat-conductive insulated plastics, all adopt the heat conductive filler adding high heat conduction in high molecular polymer, to reach the object improving material thermal conductivity, this preparation technology's Problems existing is, the addition of heat conductive filler is crossed conference and is brought serious problem to injection moulding, and the interpolation of heat conductive filler can cause the decline of material mechanical performance.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of heat conductive insulating composite material and preparation method thereof with excellent machinability and excellent mechanical performance.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of heat conductive insulating composite material and preparation method thereof, comprises the following steps: A, take 3-7 parts per weight of thermoplastic resol as binding agent and 0.3-0.7 weight part urotropine as solidifying agent, carries out dissolving wiring solution-forming with dehydrated alcohol; B, the novolac resin solution prepared and 70-150 weight part chromite sand or silicon carbide haydite to be mixed in mortar, by mechanically mixing act on chromite sand or silicon carbide haydite surface forms one deck solid phenolic resin film; C, the calcium stearate taking 0.3-0.5 weight part add in mixture as lubricant, treat that solvent alcohol volatilizees, then fragmentation is sieved and obtained precoated sand or film-coated ceramisite; D, precoated sand or film-coated ceramisite to be poured in mould, then carry out that namely hot-press solidifying is shaping obtains heat conductive insulating matrix material.The chromite sand wherein selected or silicon carbide haydite have good high-thermal-conductivity low-expansibility performance, and the novolac resin being coated on chromite sand or silicon carbide haydite surface has good insulation effect.
As preferably, in described steps A, using ultrasonic cleanser carries out dissolving and accelerates, and dissolved efficiency is improved greatly.
As preferably, the chromite sand in described step B or silicon carbide haydite granularity are 10-100 micron, and less granularity is conducive to the density improving matrix material, and its mechanical property is better.
As preferably, first the mould that precoated sand or film-coated ceramisite are housed is put into 145 DEG C, baking oven heating 15 minutes in described step D, take out 19.5-22MPa compression moulding on tabletting machine again, dwell time is 3 minutes, finally the mould suppressed is heated 1 hour at 220 DEG C, namely obtain heat conductive insulating matrix material, this technique is easy to shaping and does not need high temperature sintering, energy consumption low, and the composite material combination property after shaping is excellent.
Compared with prior art, a kind of heat conductive insulating composite material and preparation method thereof of the present invention, one deck solid phenolic resin film is formed at chromite sand or silicon carbide haydite surface after novolac resin solution and chromite sand or silicon carbide haydite being mixed, sieved by fragmentation again and obtain precoated sand or film-coated ceramisite, again precoated sand or film-coated ceramisite are poured in mould and carry out that hot-press solidifying is shaping obtains heat conductive insulating matrix material, the method manufacturing process is simple, manufacturing cost is lower, obtained heat conductive insulating matrix material has good heat conductive insulating performance, excellent machinability and excellent mechanical performance, be specially adapted to current electronic devices and components.
Embodiment
All features disclosed in this specification sheets, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification sheets, unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
Embodiment 1: a kind of heat conductive insulating composite material and preparation method thereof of the present invention, comprise the following steps: A, take 3 parts per weight of thermoplastic's resol as binding agent and 0.3 weight part urotropine as solidifying agent, carry out dissolving wiring solution-forming with dehydrated alcohol, and carry out dissolving acceleration with ultrasonic cleaner; B, the novolac resin solution prepared and 70 weight part chromite sands are mixed in mortar, form one deck solid phenolic resin film by the chromite sand sand grain surface that acts on of mechanically mixing, described chromite sand granularity is 100 microns; C, the calcium stearate taking 0.3 weight part add in mixture as lubricant, treat that solvent alcohol volatilizees, then fragmentation is sieved and obtained precoated sand; D, precoated sand is poured in mould, carry out that namely hot-press solidifying is shaping obtains heat conductive insulating matrix material again, namely first the mould that precoated sand is housed is put into 145 DEG C, baking oven heating 15 minutes, take out 19.5MPa compression moulding on tabletting machine again, dwell time is 3 minutes, finally the mould suppressed is heated 1 hour at 220 DEG C, just obtain heat conductive insulating matrix material.After testing, the thermal conductivity of heat conductive insulating matrix material that prepared by the present invention is 1.3W/ (mK).
Embodiment 2: a kind of heat conductive insulating composite material and preparation method thereof of the present invention, comprise the following steps: A, take 7 parts per weight of thermoplastic's resol as binding agent and 0.7 weight part urotropine as solidifying agent, carry out dissolving wiring solution-forming with dehydrated alcohol, and carry out dissolving acceleration with ultrasonic cleaner; B, the novolac resin solution prepared and 150 weight part chromite sands are mixed in mortar, form one deck solid phenolic resin film by the chromite sand sand grain surface that acts on of mechanically mixing, described chromite sand granularity is 10 microns; C, the calcium stearate taking 0.5 weight part add in mixture as lubricant, treat that solvent alcohol volatilizees, then fragmentation is sieved and obtained precoated sand; D, precoated sand is poured in mould, carry out that namely hot-press solidifying is shaping obtains heat conductive insulating matrix material again, namely first the mould that precoated sand is housed is put into 145 DEG C, baking oven heating 15 minutes, take out 22MPa compression moulding on tabletting machine again, dwell time is 3 minutes, finally the mould suppressed is heated 1 hour at 220 DEG C, just obtain heat conductive insulating matrix material.After testing, the thermal conductivity of heat conductive insulating matrix material that prepared by the present invention is 1.5W/ (mK).
Embodiment 3: a kind of heat conductive insulating composite material and preparation method thereof of the present invention, comprise the following steps: A, take 5 parts per weight of thermoplastic's resol as binding agent and 0.5 weight part urotropine as solidifying agent, carry out dissolving wiring solution-forming with dehydrated alcohol, and carry out dissolving acceleration with ultrasonic cleaner; B, the novolac resin solution prepared and 110 weight part chromite sands are mixed in mortar, form one deck solid phenolic resin film by the chromite sand sand grain surface that acts on of mechanically mixing, described chromite sand granularity is 50 microns; C, the calcium stearate taking 0.4 weight part add in mixture as lubricant, treat that solvent alcohol volatilizees, then fragmentation is sieved and obtained precoated sand; D, precoated sand is poured in mould, carry out that namely hot-press solidifying is shaping obtains heat conductive insulating matrix material again, namely first the mould that precoated sand is housed is put into 145 DEG C, baking oven heating 15 minutes, take out 21MPa compression moulding on tabletting machine again, dwell time is 3 minutes, finally the mould suppressed is heated 1 hour at 220 DEG C, just obtain heat conductive insulating matrix material.After testing, the thermal conductivity of heat conductive insulating matrix material that prepared by the present invention is 1.4W/ (mK).
Embodiment 4: a kind of heat conductive insulating composite material and preparation method thereof of the present invention, comprise the following steps: A, take 3 parts per weight of thermoplastic's resol as binding agent and 0.3 weight part urotropine as solidifying agent, carry out dissolving wiring solution-forming with dehydrated alcohol, and carry out dissolving acceleration with ultrasonic cleaner; B, the novolac resin solution prepared and 70 weight part silicon carbide haydites are mixed in mortar, form one deck solid phenolic resin film by the silicon carbide haydite surface that acts on of mechanically mixing, described silicon carbide haydite granularity is 100 microns; C, the calcium stearate taking 0.3 weight part add in mixture as lubricant, treat that solvent alcohol volatilizees, then fragmentation is sieved and obtained film-coated ceramisite; D, film-coated ceramisite is poured in mould, carry out that namely hot-press solidifying is shaping obtains heat conductive insulating matrix material again, namely first the mould that film-coated ceramisite is housed is put into 145 DEG C, baking oven heating 15 minutes, take out 19.5MPa compression moulding on tabletting machine again, dwell time is 3 minutes, finally the mould suppressed is heated 1 hour at 220 DEG C, just obtain heat conductive insulating matrix material.After testing, the thermal conductivity of heat conductive insulating matrix material that prepared by the present invention is 1.8W/ (mK).
Embodiment 5: a kind of heat conductive insulating composite material and preparation method thereof of the present invention, comprise the following steps: A, take 7 parts per weight of thermoplastic's resol as binding agent and 0.7 weight part urotropine as solidifying agent, carry out dissolving wiring solution-forming with dehydrated alcohol, and carry out dissolving acceleration with ultrasonic cleaner; B, the novolac resin solution prepared and 150 weight part silicon carbide haydites are mixed in mortar, form one deck solid phenolic resin film by the silicon carbide haydite surface that acts on of mechanically mixing, described silicon carbide haydite granularity is 10 microns; C, the calcium stearate taking 0.5 weight part add in mixture as lubricant, treat that solvent alcohol volatilizees, then fragmentation is sieved and obtained film-coated ceramisite; D, film-coated ceramisite is poured in mould, carry out that namely hot-press solidifying is shaping obtains heat conductive insulating matrix material again, namely first the mould that film-coated ceramisite is housed is put into 145 DEG C, baking oven heating 15 minutes, take out 22MPa compression moulding on tabletting machine again, dwell time is 3 minutes, finally the mould suppressed is heated 1 hour at 220 DEG C, just obtain heat conductive insulating matrix material.After testing, the thermal conductivity of heat conductive insulating matrix material that prepared by the present invention is 2.1W/ (mK).
Embodiment 6: a kind of heat conductive insulating composite material and preparation method thereof of the present invention, comprise the following steps: A, take 5 parts per weight of thermoplastic's resol as binding agent and 0.5 weight part urotropine as solidifying agent, carry out dissolving wiring solution-forming with dehydrated alcohol, and carry out dissolving acceleration with ultrasonic cleaner; B, the novolac resin solution prepared and 110 weight part silicon carbide haydites are mixed in mortar, form one deck solid phenolic resin film by the silicon carbide haydite surface that acts on of mechanically mixing, described silicon carbide haydite granularity is 50 microns; C, the calcium stearate taking 0.4 weight part add in mixture as lubricant, treat that solvent alcohol volatilizees, then fragmentation is sieved and obtained film-coated ceramisite; D, film-coated ceramisite is poured in mould, carry out that namely hot-press solidifying is shaping obtains heat conductive insulating matrix material again, namely first the mould that film-coated ceramisite is housed is put into 145 DEG C, baking oven heating 15 minutes, take out 21MPa compression moulding on tabletting machine again, dwell time is 3 minutes, finally the mould suppressed is heated 1 hour at 220 DEG C, just obtain heat conductive insulating matrix material.After testing, the thermal conductivity of heat conductive insulating matrix material that prepared by the present invention is 1.9W/ (mK).
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 (4)
1. a heat conductive insulating composite material and preparation method thereof, is characterized in that, comprises the following steps:
A, take 3-7 parts per weight of thermoplastic resol as binding agent and 0.3-0.7 weight part urotropine as solidifying agent, carry out dissolving wiring solution-forming with dehydrated alcohol;
B, the novolac resin solution prepared and 70-150 weight part chromite sand or silicon carbide haydite to be mixed in mortar, by mechanically mixing act on chromite sand or silicon carbide haydite surface forms one deck solid phenolic resin film;
C, the calcium stearate taking 0.3-0.5 weight part add in mixture as lubricant, treat that solvent alcohol volatilizees, then fragmentation is sieved and obtained precoated sand or film-coated ceramisite;
D, precoated sand or film-coated ceramisite to be poured in mould, then carry out that namely hot-press solidifying is shaping obtains heat conductive insulating matrix material.
2. a kind of heat conductive insulating composite material and preparation method thereof according to claim 1, is characterized in that: in described steps A, using ultrasonic cleanser carries out dissolving acceleration.
3. a kind of heat conductive insulating composite material and preparation method thereof according to claim 1, is characterized in that: the chromite sand in described step B or silicon carbide haydite granularity are 10-100 micron.
4. a kind of heat conductive insulating composite material and preparation method thereof according to claim 1, it is characterized in that: in described step D, first the mould that precoated sand or film-coated ceramisite are housed is put into 145 DEG C, baking oven heating 15 minutes, take out 19.5-22MPa compression moulding on tabletting machine again, dwell time is 3 minutes, finally the mould suppressed is heated 1 hour at 220 DEG C, namely obtain heat conductive insulating matrix material.
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| CN201510721419.0A CN105236826A (en) | 2015-10-30 | 2015-10-30 | Preparation method of thermo-conductive insulation composite material |
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| CN201510721419.0A CN105236826A (en) | 2015-10-30 | 2015-10-30 | Preparation method of thermo-conductive insulation composite material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493943A (en) * | 2016-10-27 | 2017-03-15 | 广东奥基德信机电有限公司 | A kind of solidify afterwards 3D printing forming method |
| CN107418523A (en) * | 2017-08-01 | 2017-12-01 | 芜湖领航新材料科技有限公司 | A kind of heat conductive insulating composite material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102850717A (en) * | 2012-09-27 | 2013-01-02 | 北京化工大学 | High thermal conductivity phenolic resin and preparation method |
| CN104308072A (en) * | 2014-09-16 | 2015-01-28 | 南昌航空大学 | Carbon fiber-based precoated sand material for selective laser sintering and preparation method thereof |
-
2015
- 2015-10-30 CN CN201510721419.0A patent/CN105236826A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102850717A (en) * | 2012-09-27 | 2013-01-02 | 北京化工大学 | High thermal conductivity phenolic resin and preparation method |
| CN104308072A (en) * | 2014-09-16 | 2015-01-28 | 南昌航空大学 | Carbon fiber-based precoated sand material for selective laser sintering and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493943A (en) * | 2016-10-27 | 2017-03-15 | 广东奥基德信机电有限公司 | A kind of solidify afterwards 3D printing forming method |
| CN107418523A (en) * | 2017-08-01 | 2017-12-01 | 芜湖领航新材料科技有限公司 | A kind of heat conductive insulating composite material and preparation method thereof |
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Application publication date: 20160113 |