CN109181511A - A kind of high heat conductive insulating water paint - Google Patents
A kind of high heat conductive insulating water paint Download PDFInfo
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- CN109181511A CN109181511A CN201810797017.2A CN201810797017A CN109181511A CN 109181511 A CN109181511 A CN 109181511A CN 201810797017 A CN201810797017 A CN 201810797017A CN 109181511 A CN109181511 A CN 109181511A
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
- C09D201/02—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C09D201/04—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing halogen atoms
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/28—Nitrogen-containing compounds
- C08K2003/285—Ammonium nitrates
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Abstract
The invention discloses a kind of high heat conductive insulating water paints, including water-based emulsion and auxiliary agent, further include high heat conductive insulating filler；The high heat conductive insulating filler is divided into nano-sized filler and common micro-scaled filler, and the mass ratio of the nano-sized filler and common micro-scaled filler is 0.1~10:1；The high heat conductive insulating filler includes at least nitride.High heat conductive insulating water paint disclosed by the invention, using the high thermal conductivity filler systems of compounding, pass through the further investigation to filler size and distribution to water paint heating conduction, the mutual collaboration generated using the type and specific dimensions of heat filling and the compounding of distribution, high heat conductive insulating water paint has been prepared, while heat dissipation performance is significantly improved, other physical and chemical performances include that insulation performance is consistent substantially.
Description
Technical field
The present invention relates to the technical fields of water paint, and in particular to a kind of high heat conductive insulating water paint.
Background technique
As electronic device gradually develops to miniaturization, lightweight and high performance direction, power density is continuously increased, single
Position volume calorific value is also increasing, seriously affects the working performance, use reliability and service life of device, how to realize and efficiently dissipates
Heat has become the breach of high power electronic device development and application.Traditional heat dissipating method (such as change by fin technology, convection current
It is the methods of hot and air-cooled) being difficult to meet current harsh substandard cooling requirements, (device miniaturization makes traditional heat-dissipating side
Method becomes to fail).
In the recent period, coating technology is applied to dissipation from electronic devices by scientific research personnel, obtains good effect.Due to coating skill
Art has not only better meet the requirements such as portable electronic equipment, lightweight and beauty and heat dissipation effect is significant, thus dissipates in electronics
Hot field development is swift and violent, forms the trend for gradually replacing traditional heat-dissipating method.In addition, coating also have good anti-corrosion, absolutely
The functions such as edge, moisture-proof, wherein the advantage of water paint is then more prominent, and has both environmental-friendly characteristic, meets Green Development
Historical background.But the heating conduction of water paint itself is not able to satisfy the cooling requirements of electronic device, needs further to improve
Its heating conduction.
As 104693968 A of Publication No. CN Chinese patent literature in disclose a kind of high thermal conductivity heat radiation coating and its
Preparation method, high thermal conductivity heat dissipation water paint includes water-base resin, filler and functional additive, and filler is received by graphene, carbon
Mitron, graphite oxide, fullerene, nano cages one or more of them composition.The technical solution utilizes high heat conductance and spoke
The carbon material for penetrating rate provides channel as main heat sink medium and heat transfer, is dispersed in water-base resin and is prepared into painting
Material, heat are transmitted on coating, and coating is dispersed into heat in space again, with improving radiating effect.
A kind of aqueous polyurethane function painting is for another example disclosed in the Chinese patent literature of 105153906 A of Publication No. CN
Material and preparation method thereof, which forms substantially and weight percent are as follows: aqueous polyurethane matrix resin 10-40%, water solubility
Acrylic resin 1-10%, nano-carbon material 1-5%, silica solution 0.1-5%, dispersing agent 0.5-2%, lubricant 0.1-5%, stream
Flat agent 0.1-5%, butyl glycol ether 1-20%, n-butanol 0.1-10%, ethyl alcohol 0.1-10%, remaining is water；Nano-carbon material
Including carbon nanotube and/or grapheme material.The water paint can realize the high volume content addition of nano-carbon material, realize to painting
The conductive regulation with heating conduction of layer.
The carbon material of high thermal conductivity is only added as heat filling in above technical scheme, but the meeting simultaneously of the carbon material of high thermal conductivity
It causes damages to the electrical insulating property of coating and cost is relatively high.
Currently, people generally realize high thermal conductivity by the compound of one or more high thermal conductivity fillers.
If 106336759 A of Publication No. CN discloses a kind of water soluble acrylic acid esters heat-conductive coating and preparation method thereof,
The heat-conductive coating is using acrylate copolymer emulsion as base-material, aluminium oxide, zinc oxide, aluminium nitride, boron nitride, carbon nanotube, stone
It is heat filling that black alkene etc., which has the inorganic particulate of high thermal conductivity coefficient,.The heat filling used in Example 1 of the technical solution
It is 9-11 μm of ball-aluminium oxide be 1.8-2.0 μm of spherical aluminium oxide with partial size for partial size is in mass ratio that 3:1 is mixed, but is prepared
Obtained product thermal coefficient is only 0.95W/mK；And heat filling is replaced with into modified carbon nano tube respectively in embodiment 5 and 6
After pipe and modified graphene, though thermal coefficient slightly improves, but still it is no more than 1.3W/mK, while not can avoid still because height is led
Influence of the addition of the carbon material of heat to the electrical insulating property of coating.
As it can be seen that people are forming passage of heat by one or more high thermal conductivity fillers, but ignore filler size and
It is distributed the influence to coating heat transfer performance, there are blindness for the design and preparation for causing coating.
Summary of the invention
The present invention has high thermal conductivity, height absolutely in order to solve the above technical problems, disclosing a kind of high heat conductive insulating water paint
Edge performance to electronic device can efficiently radiate in time, while not reduce other materializations coated on electronic device surface
Performance.
Specific technical solution is as follows:
A kind of high heat conductive insulating water paint, including water-based emulsion and auxiliary agent further include high heat conductive insulating filler；
The high heat conductive insulating filler is divided into nano-sized filler and common micro-scaled filler, and the nano-sized filler is filled out with micron order
The mass ratio of material is 0.1~10:1；
The high heat conductive insulating filler includes at least nitride.
The present invention has made intensive studies water-base resin system, using heat filling type and specific dimensions and
The mutual collaboration that the compounding of distribution generates, has been prepared high heat conductive insulating water paint, has been significantly improved in heat dissipation performance
While, other physical and chemical performances include that insulation performance is consistent substantially.
In the present invention, high heat conductive insulating filler uses two kinds of mode classifications, is to receive one is the size distinction by filler
Scaled fillers and common micro-scaled filler, the size of the nano-sized filler are~100nm, and the size of common micro-scaled filler is 1~30 μm；
Another kind is to divide into nitride, oxide and carbide by the element composition of filler.Two kinds of mode classifications are independent mutually, with
For nitride therein, nanoscale nitride and micron-sized nitride can be used simultaneously.
The high heat conductive insulating filler systems further include oxide and/or carbide；
Preferably, the nitride is selected from least one of aluminium nitride, boron nitride, silicon nitride；
The oxide is selected from least one of aluminium oxide, silica, zinc oxide, magnesia；
The carbide is selected from least one of silicon carbide, boron carbide, zirconium carbide.
For the deterioration that not will lead to other physical and chemical performances while guaranteeing high thermal conductivity, it is preferable that by mass percentage
It counts, in the high heat conductive insulating filler, nitride accounting is 37.5~80%.
Further preferably, the mass ratio of the nano-sized filler and common micro-scaled filler is 1.5~9:1, further preferably, described to receive
The size of scaled fillers is 50~100nm, and the size of common micro-scaled filler is 1~5 μm.
It is found through experiment that in high heat conductive insulating filler of the invention, the mass ratio of nano-sized filler and common micro-scaled filler with
And the properties of coating of the size range of the two for finally preparing play the role of it is vital, when beyond it is above-mentioned preferably
In range, it will be difficult to guarantee the deterioration that not will lead to other physical and chemical performances while high thermal conductivity.
Preferably, by mass percentage, the raw material composition of the high heat conductive insulating water paint includes:
Water-based emulsion 10~85%；
High heat conductive insulating filler 2~55%；
Auxiliary agent 2~45%.
The water-based emulsion includes aqueous epoxy resins, aqueous polyurethane, aqueous alkide resin, aqueous silicone resin, aqueous
At least one of fluororesin.
Under the premise of not influencing the performance of water paint, different auxiliary agents can be added according to specific requirements, specifically, described
Auxiliary agent includes coalescing agent, levelling agent, antioxidant, dispersing agent, defoaming agent, thickener, delustering agent, corrosion inhibiter, anti skinning agent, pH
At least one of regulator.
It is high heat conductive insulating water paint after above-mentioned each raw material is blended, then the coating is coated on substrate, through dry
It can be obtained high heat conductive insulating coating after dry.The heat dissipation of electronic component directly can be realized coated on electronical elements surface；May be used also
By coated copper foil or aluminium foil, corresponding high heat conducting nano copper foil cooling fin is made.
Compared with prior art, the present invention has the advantage that
1, it is organic to be nearly free from volatility using water as decentralized medium for high heat conductive insulating water paint disclosed by the invention
Object.Compared to other solvent based coatings, have many advantages, such as nontoxic, environmental-friendly, energy saving and safe and reliable；
2, high heat conductive insulating water paint disclosed by the invention is coated on substrate surface and forms high thermal conductivity, high-heating radiation
Nanometer heat dissipating layer spread and be partially converted to heat radiation rapidly after heat transfer to nanometer heat dissipating layer, to realize efficient
Heat dissipation；The high-specific surface area based on nanoparticle in coating significantly increases effective heat transfer area simultaneously, mentions to heat dissipation performance
Height has also played important function；Importantly, high heat conductive insulating water paint disclosed by the invention, using the high thermal conductivity of compounding
Filler systems, by the further investigation to water paint heating conduction to filler size and distribution, using the type of heat filling,
And the mutual collaboration that specific dimensions and the compounding of distribution generate, high heat conductive insulating water paint is prepared, in thermal diffusivity
While capable of being significantly improved, other physical and chemical performances include that insulation performance is consistent substantially；
3, workability based on high heat conductive insulating water paint, broad using temperature, thickness is controllable, environmental protection, surface are exhausted
Many advantageous characteristics such as edge can generate heat high in the electronics such as smart phone, computer, TV, LED and electromechanics, electrical equipment
Position carries out high efficiency and heat radiation, has considerable market prospects.
Detailed description of the invention
Fig. 1 is that PTC heater element is unprocessed, and compares through the temperature rise curve under Different treatments, wherein 1- is not
Processed PTC heater element, the PTC heater element of 2- copper-surfaced foil, 3- are posted coated with high heat conductive insulating water paint copper foil
PTC heater element；
Fig. 2 is that the high heat conductive insulating water paint of embodiment 1 prepares the SEM photograph of thermal dispersant coatings；
Fig. 3 is the high efficiency and heat radiation illustraton of model that thermal dispersant coatings are prepared with high heat conductive insulating water paint of the invention.
Specific embodiment
Embodiment 1
High heat conductive insulating water paint manufactured in the present embodiment, raw material include high heat conductive insulating filler, water-based emulsion and
Auxiliary agent.High heat conductive insulating filler includes 3% aluminium nitride (size 100nm) by weight percentage, 0.5% aluminium oxide (2 μm of size),
1.5% silicon carbide (partial size 50nm)；Auxiliary agent includes 4% coalescing agent by weight percentage, 0.5% levelling agent, 1% anti-oxidant
Agent, 1.5% dispersing agent, 0.5% defoaming agent, 2% thickener, 1% delustering agent, 0.5% corrosion inhibiter, 0.5% colorant and
0.5%pH regulator；Aqueous high molecular lotion is 83% aqueous polyurethane by weight percentage.
It is high heat conductive insulating water paint after above-mentioned each raw material is blended, is coated on substrate, according to every test
It is required that carrying out sample preparation, to be measured, each performance data is listed in the table below in 1.
Performance test
1, thermal coefficient
Based on the test request of German 447 conductometer of Nai Chi company NETZSCH LFA, height made from each embodiment is led
Thermal insulation water paint pours into mold, and it is 25.4mm, thickness≤0.1mm disk that diameter is cut into after drying film forming, to be measured,
The thermal coefficient that each embodiment and comparative example prepare product respectively is listed in table 1.
2, PTC heater element (simulation heat source) actual measurement comparison
Sample preparation: high heat conductive insulating water paint made from embodiment 1 is coated on the unilateral table of copper foil (thickness 45um)
Face, drying solidifies (5 μm of coating dry film thickness), is cut into 5cm*5cm size, to be measured；Comparative sample is identical size and thickness
Copper foil.And both sample back sides are posted similar double-sided adhesive.
Under the same conditions, institute's sample is affixed on identical PTC heater element respectively (theoretical equilibrium temperature is 100 DEG C)
Surface.By U.S.'s Extech SD200 type triple channel moisture recorder, the PTC heating curve under the conditions of different disposal is monitored.
Experiment is divided into three groups of progress, and respectively without any processing, copper-surfaced foil and patch are coated with the copper foil of thermal dispersant coatings.
It gives that PTC heater element is unprocessed in Fig. 1, and is compared through the temperature rise curve under Different treatments, seen
Discovery is examined, does not do the PTC heater element of any processing, temperature stationary value is 98 DEG C, almost the same with theoretical value；It is handled through copper foil
Afterwards, the heat-sinking capability of PTC significantly improves, and temperature stationary value drops to 90 DEG C；And heat radiation coating treated copper foil, heat dissipation effect
Most preferably, the stabilization heating temperature of PTC element only has 93 DEG C at this time, and the temperature difference advantage for comparing simple copper foil processing sample is 7 DEG C, explanation
The heat dissipation performance of heater element can be substantially improved in the presence of thermal dispersant coatings.
3, microscopic appearance is observed
Based on the test request of Japanese Shimadzu Corporation JSM-6700F field emission scanning electron microscope, embodiment 1 is made
High heat conductive insulating water paint, pour into mold, be cut into the dry film with a thickness of 5 μm after drying film forming, and be cut into 5mm*5mm
Size carries out Analysis of Surface Topography (Electronic Speculum test voltage 3kv after gold-plated processing；Gold-plated processing time 40s, electric current 10mA).
The SEM photograph that thermal dispersant coatings are prepared with the high heat conductive insulating water paint of embodiment 1, upper right (b) are given in Fig. 2
Different amplification is respectively corresponded with bottom right (d), lower-left (c) is the average grain diameter and particle diameter distribution of compounded mix in thermal dispersant coatings
Situation, and provide the SEM photograph of pure copper foil upper left (a) as a comparison.
It has been observed that pure copper foil surface topography is more smooth, and thermal dispersant coatings surfaces versus rough and it is uniformly dispersed, it is compound
It is staggered to form passage of heat between filler (average grain diameter about 78.65nm).
Heat is after the excellent copper foil conduction of intrinsic thermal conductivity, the high heat conductance based on characteristic size and distribution compounded mix
Heat radiation is spread and is partially converted to rapidly after heat transfer to thermal dispersant coatings with high-heating radiation coefficient, to realize efficient
It radiates (modelling effect is shown in Fig. 3).In addition, high-specific surface area brought by the superior dispersibility of nanoparticle, greatly improved
Heat transfer area is imitated, important function has also been played to the improvement of heat dissipation performance.It is very important, according between radiant heat transfer and temperature
Functional relation, heat source temperature is higher, and heat loss through radiation effect is more significant.It is contemplated that higher if coating is used for heat source temperature
Field, more brilliant heat dissipation effect can be obtained.
Embodiment 2
High heat conductive insulating water paint manufactured in the present embodiment, raw material include high heat conductive insulating filler, water-based emulsion and
Auxiliary agent.High heat conductive insulating filler includes 0.5% boron nitride (5 μm of size), 1.5% aluminium nitride (size by weight percentage
50nm), 3% aluminium oxide (partial size 100nm)；Auxiliary agent includes 4% coalescing agent, 1% levelling agent, 1% antioxygen by weight percentage
Agent, 1.5% dispersing agent, 0.5% defoaming agent, 2% thickener, 1% delustering agent, 0.5% anti skinning agent and 0.5%pH are adjusted
Agent；Aqueous high molecular lotion is 83% aqueous epoxy resins by weight percentage.
Comparative example 1
Raw material composition is similar to Example 2, and difference, which is only that, replaces with 5% aluminium oxide (size for high heat conductive insulating filler
30nm), the composition of other raw materials is in the same manner as in Example 1.
Comparative example 2
Raw material composition is similar to Example 2, and difference, which is only that, replaces with 5% aluminium nitride (size for high heat conductive insulating filler
30nm), the composition of other raw materials is in the same manner as in Example 1.
Embodiment 3
High heat conductive insulating water paint manufactured in the present embodiment, including high heat conductive insulating filler, water-based emulsion and auxiliary agent.
High heat conductive insulating filler includes 0.5% aluminium oxide (1 μm of size) by weight percentage, 1.5% boron nitride (size 50nm), and 2%
Silicon carbide (size 100nm)；Auxiliary agent include by weight percentage 4% coalescing agent, 1.5% levelling agent, 1% antioxidant,
1.5% dispersing agent, 0.5% defoaming agent, 2% thickener, 2% delustering agent and 0.5% corrosion inhibiter；Aqueous high molecular lotion is by weight
It is water-based fluororesin that amount percentage, which is 83%,.
Embodiment 4
High heat conductive insulating water paint manufactured in the present embodiment, including high heat conductive insulating filler, water-based emulsion and auxiliary agent.
High heat conductive insulating filler includes 1% boron nitride (1 μm of size), 2% aluminium nitride (size 100nm), 1% carbonization by weight percentage
Silicon (1 μm of particle size), 1% silicon nitride (size 100nm)；Auxiliary agent includes 4% coalescing agent, 0.5% levelling by weight percentage
Agent, 1% antioxidant, 2% dispersing agent, 0.5% defoaming agent, 2% thickener, 1% delustering agent and 1% corrosion inhibiter；Aqueous height
It is aqueous silicone resin that molecule lotion is 83% by weight percentage.
Embodiment 5
High heat conductive insulating water paint manufactured in the present embodiment, including high heat conductive insulating filler, water-based emulsion and auxiliary agent.
High heat conductive insulating filler includes 1% aluminium oxide (1 μm of size) by weight percentage, 0.5% boron nitride (size 100nm), and 1.5%
Aluminium nitride (partial size 50nm), 0.5% boron nitride (1 μm of partial size), 1.5% silicon carbide (partial size 100nm).The auxiliary agent by weight hundred
Point than include 4% coalescing agent, 1% levelling agent, 1% antioxidant, 1.5% dispersing agent, 0.5% defoaming agent, 2% thickener,
1% delustering agent, 0.5% corrosion inhibiter and 0.5%pH regulator.It is water alcohol acid tree that the aqueous high molecular lotion, which is 83%,
Rouge.
Table 1
| Sample | Testing standard | Comparative example 1 | Comparative example 2 | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Film thickness μm | GB/T1345.2-2008 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Solid content % | GB/T 1725-2007 | 40% | 40% | 40% | 40% | 40% | 40% | 40% |
| Salt spray test h | GB/T10125-1997 | > 1000 | > 1000 | > 1000 | > 1000 | > 1000 | > 1000 | > 1000 |
| Coating hardness | GB/T6742-2007 | HB | HB | HB | HB | HB | B | B |
| Electrical strength MV/m | GB/T 1408.1-2016 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 |
| Volume resistivity Ω m | HG/T 3331-2012 | ≥1X1013 | ≥1X1013 | ≥1X1013 | ≥1X1013 | ≥1X1013 | ≥1X1013 | ≥1X1013 |
| Dielectric constant | GB/T 5594.4-2015 | ≤3.5 | ≤3.5 | ≤3.5 | ≤3.5 | ≤3.5 | ≤3.5 | ≤3.5 |
| Adhesive force/cross cut test | GB/T9286-1998 | 0 grade | 0 grade | 0 grade | 0 grade | 0 grade | 0 grade | 0 grade |
| Thermal conductivity w/mk | GB T 22588-2008 | 1.0 | 1.3 | 1.8 | 1.6 | 1.5 | 1.6 | 1.5 |
Statistics indicate that, the size of heat filling and distribution influence significant, different rulers on coating thermal conductivity by contrast table 1
Very little filler is compound better than same size filling effect according to suitable distribution proportion；Under higher dosage, nanoparticle system thermal conductivity
It is ineffective using nanoparticle better than micro particles, but directly, nanometer and micron-size particles is compound, then it can significantly improve
Heating conduction.
Claims (9)
1. a kind of high heat conductive insulating water paint, including water-based emulsion and auxiliary agent, which is characterized in that further include that high heat conductive insulating is filled out
Material；
The high heat conductive insulating filler is divided into nano-sized filler and common micro-scaled filler, the nano-sized filler and common micro-scaled filler
Mass ratio is 0.1~10:1；
The high heat conductive insulating filler includes at least nitride.
2. high heat conductive insulating water paint according to claim 1, which is characterized in that the nitride be selected from aluminium nitride,
At least one of boron nitride, silicon nitride.
3. high heat conductive insulating water paint according to claim 1, which is characterized in that the high heat conductive insulating filler also wraps
Include oxide and/or carbide；
The oxide is selected from least one of aluminium oxide, silica, beryllium oxide, magnesia；
The carbide is selected from least one of silicon carbide, boron carbide, zirconium carbide.
4. high heat conductive insulating water paint according to claim 1, which is characterized in that by mass percentage, the height
In heat-conductive insulation filling, nitride accounting is 37.5~80%.
5. high heat conductive insulating water paint according to claim 1, which is characterized in that the nano-sized filler and micron order
The mass ratio of filler is 1.5~9:1.
6. high heat conductive insulating water paint according to claim 1, which is characterized in that the size of the nano-sized filler is
50~100nm, the size of common micro-scaled filler are 1~5 μm.
7. any high heat conductive insulating water paint according to claim 1~6, which is characterized in that by mass percentage,
The raw material of the high heat conductive insulating water paint forms
Water-based emulsion 10~85%；
High heat conductive insulating filler 2~55%；
Auxiliary agent 2~45%.
8. high heat conductive insulating water paint according to claim 1, which is characterized in that the water-based emulsion includes aqueous ring
At least one of oxygen resin, aqueous polyurethane, aqueous alkide resin, aqueous silicone resin, water-based fluororesin.
9. high heat conductive insulating water paint according to claim 1, which is characterized in that the auxiliary agent include coalescing agent,
Levelling agent, antioxidant, dispersing agent, defoaming agent, thickener, delustering agent, corrosion inhibiter, anti skinning agent, at least one in pH adjusting agent
Kind.
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| CN110183950A (en) * | 2019-03-21 | 2019-08-30 | 天津灯塔涂料工业发展有限公司 | Aqueous polyurethane insulated paint for electrical industry |
| CN111732868A (en) * | 2020-05-23 | 2020-10-02 | 广东日禾电器有限公司 | Heating coating insulating protection material and preparation method thereof |
| CN112812360A (en) * | 2020-12-31 | 2021-05-18 | 广东安拓普聚合物科技有限公司 | Heat-conducting filler and application thereof |
| CN114835861A (en) * | 2022-05-11 | 2022-08-02 | 广东思泉新材料股份有限公司 | Low-dielectric high-thermal-conductivity composite film and preparation method thereof |
| CN115109496A (en) * | 2022-06-15 | 2022-09-27 | 何凯 | Water-based anticorrosive paint and preparation method thereof |
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| CN109181511B (en) | 2021-02-26 |
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