CN104152890B - The method that the high-temperature insulation coating of heat shock resistance is prepared on the component of flexible metal - Google Patents
The method that the high-temperature insulation coating of heat shock resistance is prepared on the component of flexible metal Download PDFInfo
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- CN104152890B CN104152890B CN201410370394.XA CN201410370394A CN104152890B CN 104152890 B CN104152890 B CN 104152890B CN 201410370394 A CN201410370394 A CN 201410370394A CN 104152890 B CN104152890 B CN 104152890B
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Abstract
The present invention provides a kind of method for the high-temperature insulation coating that heat shock resistance is prepared on the component of flexible metal, belong to field of electronic materials.This method prepares slurry using inorganic particle, aeroge, organic siliconresin and silane coupling agent first, then above-mentioned slurry is coated on the component of flexible metal using silk-screen printing, spraying process or spread coating, finally dumping 30min at a temperature of 250 DEG C in an oven, is naturally cooling to room temperature and obtains the high-temperature insulation coating.The method of the present invention is simple and practicable; shorten the manufacturing cycle of coating; reduce manufacturing cost; obtained coating has good adhesion property on the component of flexible metal; the insulation protection demand of the larger component of deformation can be better met, obtained coating has the characteristic of good thermal insulation, insulation, high temperature resistant and heat shock resistance.
Description
Technical field
The invention belongs to field of electronic materials, and in particular to a kind of resistance to height that heat shock resistance is prepared on the component of flexible metal
The method of warm insulating coating.
Background technology
In forceful electric power application field, there are substantial amounts of metal connection parts, these component long-term works are in high voltage and height electricity
Under the load of stream, it is necessary to keep good insulation characterisitic.Simultaneously because self-heating and special working environment, it is necessary to these
Component has good heat shock resistance and resistance to elevated temperatures.Therefore, the insulation performance of connecting component, high temperature resistant and thermal-shock resistance
Very crucial effect can be played to the stable operation of power equipment and system.
In order to meet to the technical need of connecting component, it is necessary in conductive or shortage resistance to elevated temperatures parts surface system
Standby insulating coating, the insulation performance and resistance to elevated temperatures of lifting piece.And with it is more and more wind, it is bent new
The generation of flexible electronic device, it is more and more urgent to demand that insulating coating is prepared in flexible metal parts surface.Therefore, it is badly in need of
Find a kind of simple, convenient method that high-temperature insulation coating is prepared on the component of flexible metal.
The content of the invention
, should the present invention provides a kind of method for the high-temperature insulation coating that heat shock resistance is prepared on the component of flexible metal
Method is simple and practicable, shortens the manufacturing cycle of coating, reduces manufacturing cost, and obtained coating has on the component of flexible metal
There is good adhesion property, the insulation protection demand of the larger component of deformation can be better met, obtained coating has well
Thermal insulation, insulation, the characteristic of high temperature resistant and heat shock resistance.
Technical scheme is as follows：
A kind of method for the high-temperature insulation coating that heat shock resistance is prepared on the component of flexible metal, comprises the following steps：
(1) clean：Grinding process is carried out to flexible metal component first, then one after another using ethanol and acetone to polishing
Flexible metal component afterwards is cleaned, and cleaning is placed under nitrogen atmosphere dry；
(2) preparation of inorganic filler：By inorganic particle grinding 10-20min of the size less than 20 microns and it is uniformly mixed, will
Aeroge grinds 10-20min, to reduce particle size, increases the specific surface area of aeroge；Then by the inorganic particle after grinding
With aeroge according to mass ratio be 1~10:1 ratio is uniformly mixed；Mixed inorganic particle and aeroge addition is anhydrous
In ethanol, ultrasonic disperse is filtered by vacuum to remove excessive ethanol to after forming the suspension of stable homogeneous；After finally filtering
Obtained filter cake is dry in vacuum drying chamber, obtains the inorganic filler；
(3) preparation of slurry：It is 0.5~2 in mass ratio by the inorganic filler obtained by organic siliconresin and step (2):1
Ratio is uniformly mixed at room temperature, to realize effective parcel of the organic siliconresin to inorganic particle, finally, adds organic siliconresin
1%~5% silane coupling agent of quality, is uniformly mixing to obtain slurry；
(4) coating coats：On flexible metal component after slurry made from step (3) is handled coated on step (1), so
Dumping 30min at a temperature of 250 DEG C is placed in baking oven, room temperature is naturally cooling to and obtains the high-temperature insulation coating.
Wherein, the material of flexible metal component described in step (1) is nickel alloy, copper, iron, stainless steel etc..
Wherein, inorganic particle described in step (2) is mica powder, in talcum powder, titanium dioxide, zinc oxide, asbestos, silicon whisker
At least one with nanometer Al2O3The mixture of powder；Aeroge described in step (2) is the parent that supercritical drying is prepared
Water base or hydrophobic group aeroge.Filter cake temperature dry in vacuum drying chamber is 150-300 DEG C in step (2), drying time
For 24~36h.
Organic siliconresin described in step (3) has mobility, and material is methyl phenyl silicone resin or organosilicon
Plastics etc.；The silane coupling agent is the material that can be combined at the same time with inorganic substances and organic resin, is specially amino, methyl
Or ethylsilane coupling agent.
Painting method described in step (4) is silk-screen printing, spraying process or spread coating etc..Resistance to height obtained by step (4)
The thickness of warm insulating coating is 1~100 μm.
Beneficial effects of the present invention are：
1st, present invention employs it is a kind of it is easy to operate, technique is simple, cost is low prepares heat resistanceheat resistant on the component of flexible metal
The method of the high-temperature insulation coating of impact, the adhesive force of coating made from this method and flexible metal component is good, disclosure satisfy that
The insulation protection demand of the larger component of deformation.
2nd, the high-temperature insulation coating that the present invention is prepared has good thermal insulation, insulation, high temperature resistant and heat shock resistance
Characteristic.Coating constant temperature 20min at 1000 DEG C, coating morphology are destroyed without significant change, no discoloration, flawless, no structure；Coating
Square resistance be more than 1000M Europe, excellent insulating property.
3rd, the slurry of high-temperature insulation coating of the present invention is that inorganic particle, aeroge and silane are added in organic siliconresin
Coupling agent obtains, addition silane coupling agent can strengthening slurry caking property, coating is had more preferable connectivity and in flexible metal
Adhesive force on substrate, increases substantially bending strength, tensile strength and the interlaminar shear strength of coating and water-fast, anti-aging
Etc. performance；Addition aeroge can improve the high-temperature stability of coating, and improve coating using the space net structure of aeroge
Connectivity, improves the intensity and thermal shock resistance of coating.
4th, the present invention can remove organic principle using low temperature dumping, and solidify coating, makes coating have at room temperature higher
Hardness simultaneously realizes good adhesive force with flexible metal component.
5th, the present invention uses the painting method of silk-screen printing, can obtain the good coating of thin and adhesive force, make coating in height
It is not easy to crack under temperature, while make a plate convenience, cheap, technology are easy to grasp, suitable for large-scale production and application.
Brief description of the drawings
Fig. 1 is the high-temperature insulation coating that the embodiment of the present invention obtains.
Coating figures of the Fig. 2 for the high-temperature insulation coating that the embodiment of the present invention obtains after 1000 DEG C of high temperature resistants are tested
Piece.
Embodiment
Elaborate with reference to specific embodiment and attached drawing to the present invention.
Embodiment
The method that the high-temperature insulation coating of heat shock resistance is prepared on the component of flexible metal, comprises the following steps：
(1) clean：Grinding process is carried out to the flexible nickel-base strip of 50mm × 10mm with 600# sand paper first, then will polishing
Flexible nickel-base strip afterwards is successively cleaned by ultrasonic 10min in ethanol and acetone soln, and flexible nickel-base strip is taken out after cleaning, uses nitrogen
Air gun drying is stand-by；
(2) preparation of inorganic filler：It is 3 by mass ratio:1 nanometer Al2O3The talcum powder of powder and 2000 mesh is ground in agate
10min is ground in alms bowl and is uniformly mixed, hydrophilic group aeroge is ground into 10min in agate mortar, to reduce particle size, is increased
Aerating gel specific surface area；Then by ground nanometer Al2O3Powder, the talcum powder of 2000 mesh and hydrophilic group aeroge according to
3:1:1 ratio is uniformly mixed, and 20min is ground in agate mortar, is added in 100mL absolute ethyl alcohols, ultrasonic disperse 20min,
After forming the suspension of stable homogeneous, it is filtered by vacuum to remove excessive ethanol；Finally by the filter cake obtained after suction filtration in vacuum
150 DEG C of dry 24h, obtain the inorganic filler in drying box；
(3) preparation of slurry：It is 1.2 in mass ratio by methyl phenyl silicone resin liquid and inorganic filler obtained above:1
Ratio be mixed and stirred for 10min, realize effective parcel of the methyl phenyl silicone resin to inorganic filler, slurry has preferably at the same time
Mobility, then add 2% γ-aminopropyltrimethoxysilane coupling agent of methyl phenyl silicone resin quality, be mixed
2min, obtains slurry；
(4) coating coats：Slurry made from step (3) is evenly applied on the flexible nickel-base strip after step (1) processing,
It is subsequently placed in baking oven, 250 DEG C is warming up to the speed of 15 DEG C/s, insulation 30min carries out dumping, Temperature fall after dumping
The high-temperature insulation coating is obtained to room temperature.
Fig. 1 is the high-temperature insulation coating that the embodiment of the present invention obtains.As shown in Figure 1, using the method for the present invention in flexibility
Uniform high-temperature insulation coating has been made on metal base band.
Coating figures of the Fig. 2 for the high-temperature insulation coating that the embodiment of the present invention obtains after 1000 DEG C of high temperature resistants are tested
Piece.As shown in Figure 2, using the method for the present invention in the base band of flexible metal obtained high-temperature insulation coating constant temperature at 1000 DEG C
20min, coating morphology are destroyed without significant change, no discoloration, flawless, no structure.Thermal shock test is carried out at 900 DEG C：Will
Coating produced by the present invention is pushed into rapidly in 900 DEG C of tube furnace by room temperature, repeatedly 3 progress thermal shock tests, coating surface
Good connectivity is still maintained, no ablation phenomen, flawless, no structure is destroyed, and is adhered to well on substrate.Coating
Square resistance be more than 1000M Europe, excellent insulating property.Using high temperature silver paste prepare top electrode, using flexible metal base band as
Bottom electrode, after high temperature resistant and thermal shock test, the resistance of coating in a thickness direction is still up to 80M Europe, it was demonstrated that coating
Maintain good insulation characterisitic.
Claims (8)
- A kind of 1. method for the high-temperature insulation coating that heat shock resistance is prepared on the component of flexible metal, it is characterised in that including Following steps：(1) clean：Grinding process is carried out to flexible metal component first, after then using ethanol and acetone one after another to polishing Flexible metal component is cleaned, and cleaning is placed under nitrogen atmosphere dry；(2) preparation of inorganic filler：By inorganic particle grinding 10-20min of the size less than 20 microns and it is uniformly mixed, by airsetting Glue grinds 10-20min；Then it is 1~10 according to mass ratio by the inorganic particle after grinding and aeroge:1 ratio mixing is equal It is even；Mixed inorganic particle and aeroge are added in absolute ethyl alcohol, after the suspension of ultrasonic disperse to formation stable homogeneous, Vacuum filtration, obtained filter cake is dry in vacuum drying chamber, obtains the inorganic filler；Wherein, the inorganic particle is cloud At least one of female powder, talcum powder, titanium dioxide, zinc oxide, asbestos, silicon whisker and nanometer Al2O3The mixture of powder, it is described Nanometer Al in inorganic particle2O3The mass ratio of powder and mica powder, talcum powder, titanium dioxide, zinc oxide, asbestos or silicon whisker is 3: 1；(3) preparation of slurry：It is 0.5~2 in mass ratio by the inorganic filler obtained by organic siliconresin and step (2):1 ratio It is uniformly mixed at room temperature, then adds 1%~5% silane coupling agent of organic siliconresin quality, be uniformly mixing to obtain slurry Material；(4) coating coats：By slurry made from step (3) coated on the flexible metal component after step (1) processing, then put The dumping 30min at a temperature of 250 DEG C in baking oven, is naturally cooling to room temperature and obtains the high-temperature insulation coating.
- 2. the method for the high-temperature insulation coating according to claim 1 that heat shock resistance is prepared on the component of flexible metal, It is characterized in that, the material of the flexible metal component described in step (1) is nickel alloy, copper, iron or stainless steel.
- 3. the method for the high-temperature insulation coating according to claim 1 that heat shock resistance is prepared on the component of flexible metal, It is characterized in that, the aeroge described in step (2) is the hydrophilic group or hydrophobic group aeroge that supercritical drying is prepared.
- 4. the method for the high-temperature insulation coating according to claim 1 that heat shock resistance is prepared on the component of flexible metal, It is characterized in that, the temperature of the drying in vacuum drying chamber of filter cake described in step (2) is 150~300 DEG C, drying time 24 ~36h.
- 5. the method for the high-temperature insulation coating according to claim 1 that heat shock resistance is prepared on the component of flexible metal, It is characterized in that, the organic siliconresin material described in step (3) is methyl phenyl silicone resin or silicone plasties.
- 6. the method for the high-temperature insulation coating according to claim 1 that heat shock resistance is prepared on the component of flexible metal, It is characterized in that, the silane coupling agent described in step (3) is amino, methyl or ethylsilane coupling agent.
- 7. the method for the high-temperature insulation coating according to claim 1 that heat shock resistance is prepared on the component of flexible metal, It is characterized in that, the painting method described in step (4) is silk-screen printing, spraying process or spread coating.
- 8. the method for the high-temperature insulation coating according to claim 1 that heat shock resistance is prepared on the component of flexible metal, It is characterized in that, the thickness of the high-temperature insulation coating obtained by step (4) is 1~100 μm.
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| CN201410370394.XA CN104152890B (en) | 2014-07-30 | 2014-07-30 | The method that the high-temperature insulation coating of heat shock resistance is prepared on the component of flexible metal |
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| CN107265469A (en) * | 2016-04-08 | 2017-10-20 | 南京唯才新能源科技有限公司 | A kind of surface modifying method of micron order aerogel powder |
| CN107464867B (en) * | 2017-07-14 | 2019-06-14 | 上海盛丽光电科技有限公司 | A kind of preparation method of LED large scale gallium nitride semiconductor piece |
| RU2020125210A (en) | 2018-01-23 | 2022-01-31 | Дау Силиконз Корпорейшн | BINDER COMPOSITION AND ITS APPLICATION |
| CN108504148B (en) * | 2018-05-11 | 2020-10-20 | 长安大学 | Heat-resistant insulating ceramic coating and preparation method thereof |
| CN108950536A (en) * | 2018-08-01 | 2018-12-07 | 浙江埃普瑞纳米材料有限公司 | The preparation method of nano oxidized aluminium film for circuit board |
| CN110855159A (en) * | 2019-11-29 | 2020-02-28 | 广东美的制冷设备有限公司 | Power encapsulation module, preparation method and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103525297A (en) * | 2013-10-17 | 2014-01-22 | 电子科技大学 | High-temperature-resistant, adiabatic and insulated coating applied to fuse protector and preparation method of coating |
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| CN103525297A (en) * | 2013-10-17 | 2014-01-22 | 电子科技大学 | High-temperature-resistant, adiabatic and insulated coating applied to fuse protector and preparation method of coating |
Non-Patent Citations (1)
| Title |
|---|
| 实用新型耐磨丙烯酸纳米Al2O3复合涂料;王昉;《新型建筑材料》;20050630(第6期);第44-46页 * |
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