CN106398509A - Heat dissipation coating with electromagnetic shielding function and preparation method thereof - Google Patents
Heat dissipation coating with electromagnetic shielding function and preparation method thereof Download PDFInfo
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- CN106398509A CN106398509A CN201610798312.0A CN201610798312A CN106398509A CN 106398509 A CN106398509 A CN 106398509A CN 201610798312 A CN201610798312 A CN 201610798312A CN 106398509 A CN106398509 A CN 106398509A
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- C—CHEMISTRY; METALLURGY
- 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
- C09D175/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
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- Paints Or Removers (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention discloses a heat dissipation coating with electromagnetic shielding and a preparation method thereof, wherein the heat dissipation coating comprises the following components in parts by weight: 30-50 parts of aqueous polyurethane emulsion, 5-8 parts of surface hydroxylated carbon nano tubes, 2-4 parts of graphene, 5-8 parts of nano silicon dioxide, 3-5 parts of ammonium molybdate, 1-3 parts of aluminum magnesium alloy powder, 1.1-2.2 parts of an auxiliary agent, 20-40 parts of water and 6-10 parts of a curing agent. The invention aims to overcome the defects in the prior art and provide the radiating coating with electromagnetic shielding, which has reasonable components and proportion and good radiating effect; another object of the present invention is to provide a method for preparing the above heat-dissipating coating material.
Description
Technical field
The present invention relates to a kind of heat radiation coating with electromagnetic shielding, another object of the present invention is to provide one kind to prepare
The method stating heat radiation coating.
Background technology
Heat radiation coating is a kind of radiating efficiency improving body surface, reduces the sapecial coating of system temperature.Heat radiation coating,
It is by improving body surface radiation efficiency, augmented heat dispersion.Its formula of existing heat radiation coating is complicated, component proportion
Unreasonable, radiating effect is relatively poor.
Content of the invention
The invention aims to overcoming weak point of the prior art, providing a kind of component and reasonable mixture ratio, dissipating
What thermal effect was good has the heat radiation coating of electromagnetic shielding；
Another object of the present invention is to provide a kind of method preparing above-mentioned heat radiation coating.
In order to achieve the above object, the present invention adopts below scheme：
A kind of heat radiation coating with electromagnetic shielding is it is characterised in that include following components by weight：
30～50 parts of aqueous polyurethane emulsion, 5～8 parts of the CNT of surface hydroxylation, Graphene 2～4 part, nanometer two
5～8 parts of silica, 3～5 parts of ammonium molybdate, 1～3 part of Al-Mg alloy powder, auxiliary agent 1.1-2.2 part, 20～40 parts of water, curing agent 6～
10 parts.
A kind of heat radiation coating with electromagnetic shielding is it is characterised in that described auxiliary agent includes by weight as above
0.1-0.5 part dispersant, 0.2-0.4 part adhesion promoter, 0.3～0.5 part of levelling agent, 0.5～0.8 part of plasticizer.
A kind of heat radiation coating with electromagnetic shielding is it is characterised in that described dispersant is polyphosphate as above；
Described adhesion promoter is silane base silane；Described levelling agent is polyether-modified dimethyl silicone polymer, and described plasticizer is
Tri-n-butyl citrate.
A kind of heat radiation coating with electromagnetic shielding is it is characterised in that described aqueous polyurethane emulsion is alkane as above
Hydroxyl silicon oil modified aqueous polyurethane, preparation method is：By weight, by 10～30 parts of TDI, 8～20 parts of polyethers, DMPA8
～16 parts, 10～18 parts of hydroxyl-containing silicone mix, be warming up to 70～90 DEG C, add 0.5～3 part of organotin catalysts carry out
Reaction 3～6h, adds 5～10 parts of chain extender and carries out reacting 1～3h, add acetone diluting reaction thing, adds three after cooling
In ethamine with become salt, add water 10～20 parts of emulsifications, remove acetone under reduced pressure, emulsion may finally be obtained.
A kind of heat radiation coating with electromagnetic shielding is it is characterised in that the carbon nanometer of described surface hydroxylation as above
Pipe is prepared as follows：By weight, by 0.1-0.5 part multi-walled carbon nano-tubes and 8-12 part potassium hydroxide in ball grinder
Mixing, plus ethanol in proper amount, ball milling, after 15 hours, is washed with deionized reactant to neutral, CNT is put into 100 DEG C very
Obtain final product after being dried 12 hours in empty drying box.
A kind of heat radiation coating with electromagnetic shielding is it is characterised in that also include 2-5 weight portion polyethers as above
Modified amino silicon oil.
As above a kind of heat radiation coating with electromagnetic shielding it is characterised in that described polyether-containing aminopolysiloxane by
Prepared by following methods：S1：Equipped with agitator, condenser pipe, the there-necked flask of thermometer, add 400 weight portion D4, stir,
It is warming up to 115 DEG C, add catalyst TMAH 0.24 weight portion, about insulation half an hour, treat that viscosity significantly increases
Add coupling agent N- β (aminoethyl)-γ-aminopropyltriethoxy dimethoxy silane 20.8 weight portion afterwards, temperature control is at 115 DEG C about 6 little
When, obtain amido silicon oil；S2：Equipped with agitator, condenser pipe, the 1000ml there-necked flask of thermometer, add on 200 weight portions
State the amido silicon oil of synthesis, 150 parts by weight of activated polyethers, 105g isopropanol, at 80～92 DEG C, carry out back flow reaction, to reaction
After thing is transparent, it is further continued for being incubated four hours, finally under the conditions of 0.01MPa, cooling decompression sloughs isopropanol, obtains final product.
Organotin catalysts of the present invention refer to dibutyl tin dilaurate.
Polyethers of the present invention refers to polyethers E-210.
Chain extender of the present invention is l, 4- butanediol, neopentyl glycol, ethylene glycol, diglycol, glycerine, suitable fourth
One of enedioic acid acid anhydride, trimethylolpropane, ethylenediamine, diethylenetriamine, triethylene tetramine or dihydromethyl propionic acid or several
The mixture planted.
Emulsification refers to stirring under speed 2000～4000rpm.
A kind of method preparing the heat radiation coating as claimed in claim 1 with electromagnetic shielding of the present invention it is characterised in that
Comprise the following steps：
By aqueous polyurethane emulsion, the CNT of surface hydroxylation, Graphene, nano silicon, ammonium molybdate, magnalium
Alloyed powder, auxiliary agent, water add in paint grinder mill after mixing and are ground to 30-50 μm, and ultrasonic disperse uniformly, adds curing agent
Mix.
In sum, the present invention with respect to prior art its advantage is：
Instant component and reasonable mixture ratio, good heat dissipation effect.
Specific embodiment
With reference to specific embodiment, the invention will be further described：
Embodiment 1
30 parts of aqueous polyurethane emulsion, 5 parts of the CNT of surface hydroxylation, 2 parts of Graphene, 5 parts of nano silicon,
3 parts of ammonium molybdate, 1 part of Al-Mg alloy powder, 1.1 parts of auxiliary agent, 20 parts of water, 6 parts of curing agent.
Curing agent of the present invention is triethylene tetramine.
Described auxiliary agent includes 0.1 part of polyphosphate, 0.2 part of silane base silane, polyether-modified poly dimethyl silicon by weight
0.3 part of oxygen alkane, 0.5 part of tri-n-butyl citrate.
Described aqueous polyurethane emulsion is hydroxyl-containing silicone modified aqueous polyurethane, and preparation method is：By weight, will
10 parts of TDI, 8 parts of polyethers, DMPA8 part, 10 parts of hydroxyl-containing silicone mix, and are warming up to 70 DEG C, add organotin catalysts
0.5 part carries out reacting 3h, adds 5 parts of chain extender and carries out reacting 1h, adds acetone diluting reaction thing, add three second after cooling
In amine with become salt, add water 10 parts of emulsifications, remove acetone under reduced pressure, emulsion may finally be obtained.
The CNT of described surface hydroxylation is prepared as follows：By weight, by more than 0.1 part in ball grinder
Wall carbon nano tube is mixed with 8 parts of potassium hydroxide, plus ethanol in proper amount, and ball milling is after 15 hours, be washed with deionized reactant in
Property, CNT is put into and obtains final product after being dried 12 hours in 100 DEG C of vacuum drying chambers.
Preparation method comprises the following steps：
By aqueous polyurethane emulsion, the CNT of surface hydroxylation, Graphene, nano silicon, ammonium molybdate, magnalium
Alloyed powder, auxiliary agent, water add in paint grinder mill after mixing and are ground to 30-50 μm, and ultrasonic disperse uniformly, adds curing agent
Mix.
Embodiment 2
50 parts of aqueous polyurethane emulsion, 8 parts of the CNT of surface hydroxylation, 4 parts of Graphene, 8 parts of nano silicon,
5 parts of ammonium molybdate, 3 parts of Al-Mg alloy powder, 2.2 parts of auxiliary agent, 40 parts of water, 10 parts of curing agent.
Described auxiliary agent includes 0.5 part of polyphosphate, 0.4 part of silane base silane, polyether-modified poly dimethyl silicon by weight
0.5 part of oxygen alkane, tri-n-butyl citrate 0.8.
Described aqueous polyurethane emulsion is hydroxyl-containing silicone modified aqueous polyurethane, and preparation method is：By weight, will
30 parts of TDI, 20 parts of polyethers, DMPA16 part, 18 parts of hydroxyl-containing silicone mix, and are warming up to 90 DEG C, add organotin catalysts
0.5～3 part carries out reacting 6h, adds 10 parts of chain extender and carries out reacting 3h, adds acetone diluting reaction thing, add after cooling
In triethylamine with become salt, add water 20 parts of emulsifications, remove acetone under reduced pressure, emulsion may finally be obtained.
The CNT of described surface hydroxylation is prepared as follows：By weight, by more than 0.5 part in ball grinder
Wall carbon nano tube is mixed with 12 parts of potassium hydroxide, plus ethanol in proper amount, and ball milling is after 15 hours, be washed with deionized reactant in
Property, CNT is put into and obtains final product after being dried 12 hours in 100 DEG C of vacuum drying chambers.
Preparation method comprises the following steps：
By aqueous polyurethane emulsion, the CNT of surface hydroxylation, Graphene, nano silicon, ammonium molybdate, magnalium
Alloyed powder, auxiliary agent, water add in paint grinder mill after mixing and are ground to 30-50 μm, and ultrasonic disperse uniformly, adds curing agent
Mix.
Embodiment 3
40 parts of aqueous polyurethane emulsion, 6 parts of the CNT of surface hydroxylation, 3 parts of Graphene, 6 parts of nano silicon,
4 parts of ammonium molybdate, 2 parts of Al-Mg alloy powder, 1.5 parts of auxiliary agent, 30 parts of water, 8 parts of curing agent.
Described auxiliary agent includes 0.2 part of polyphosphate, 0.3 part of silane base silane, polyether-modified poly dimethyl silicon by weight
0.4 part of oxygen alkane, tri-n-butyl citrate 0.6.
Described aqueous polyurethane emulsion is hydroxyl-containing silicone modified aqueous polyurethane, and preparation method is：By weight, will
20 parts of TDI, 12 parts of polyethers, DMPA12 part, 14 parts of hydroxyl-containing silicone mix, and are warming up to 80 DEG C, add organotin catalysts
1 part carries out reacting 4h, adds 6 parts of chain extender and carries out reacting 2h, add acetone diluting reaction thing, adds triethylamine after cooling
Neutralize into salt, add water 15 parts of emulsifications, remove acetone under reduced pressure, emulsion may finally be obtained.
The CNT of described surface hydroxylation is prepared as follows：By weight, by more than 0.2 part in ball grinder
Wall carbon nano tube is mixed with 10 parts of potassium hydroxide, plus ethanol in proper amount, and ball milling is after 15 hours, be washed with deionized reactant in
Property, CNT is put into and obtains final product after being dried 12 hours in 100 DEG C of vacuum drying chambers.
Preparation method comprises the following steps：
By aqueous polyurethane emulsion, the CNT of surface hydroxylation, Graphene, nano silicon, ammonium molybdate, magnalium
Alloyed powder, auxiliary agent, water add in paint grinder mill after mixing and are ground to 30-50 μm, and ultrasonic disperse uniformly, adds curing agent
Mix.
Embodiment 4
50 parts of aqueous polyurethane emulsion, 5 parts of the CNT of surface hydroxylation, 4 parts of Graphene, 8 parts of nano silicon,
5 parts of ammonium molybdate, 3 parts of Al-Mg alloy powder, 1.1 parts of auxiliary agent, 40 parts of water, 10 parts of curing agent, 5 weight portion polyether-containing aminopolysiloxane.
Described auxiliary agent includes 0.1 part of polyphosphate, 0.2 part of silane base silane, polyether-modified poly dimethyl silicon by weight
0.3 part of oxygen alkane, 0.5 part of tri-n-butyl citrate.
Described aqueous polyurethane emulsion is hydroxyl-containing silicone modified aqueous polyurethane, and preparation method is：By weight, will
15 parts of TDI, 18 parts of polyethers, DMPA14 part, 16 parts of hydroxyl-containing silicone mix, and are warming up to 85 DEG C, add organotin catalysts
2.5 parts carry out reacting 5h, add 8 parts of chain extender and carry out reacting 2h, add acetone diluting reaction thing, add three second after cooling
In amine with become salt, add water 15 parts of emulsifications, remove acetone under reduced pressure, emulsion may finally be obtained.
The CNT of described surface hydroxylation is prepared as follows：By weight, by more than 0.1 part in ball grinder
Wall carbon nano tube is mixed with 12 parts of potassium hydroxide, plus ethanol in proper amount, and ball milling is after 15 hours, be washed with deionized reactant in
Property, CNT is put into and obtains final product after being dried 12 hours in 100 DEG C of vacuum drying chambers.
Described polyether-containing aminopolysiloxane is prepared as follows：S1：Equipped with agitator, condenser pipe, thermometer three
In mouth flask, add 400 weight portion D4, stirring, be warming up to 115 DEG C, add catalyst TMAH 0.24 weight portion,
About insulation half an hour, add coupling agent N- β (aminoethyl)-γ-aminopropyltriethoxy dimethoxy silane after viscosity significantly increases
20.8 weight portions, temperature control 115 DEG C about 6 hours, obtain amido silicon oil；S2：Equipped with agitator, condenser pipe, thermometer
In 1000ml there-necked flask, add the amido silicon oil of the above-mentioned synthesis of 200 weight portions, 150 parts by weight of activated polyethers, 105g isopropyl
Alcohol, at 80～92 DEG C, carries out back flow reaction, to reactant transparent after, be further continued for being incubated four hours, finally in 0.01MPa bar
Under part, cooling decompression sloughs isopropanol, obtains final product.
Preparation method comprises the following steps：
By aqueous polyurethane emulsion, the CNT of surface hydroxylation, Graphene, nano silicon, ammonium molybdate, magnalium
Alloyed powder, auxiliary agent, water and other component add in paint grinder mill after mixing and are ground to 30-50 μm, ultrasonic disperse uniformly,
Curing agent is added to mix.
Above heat radiation coating is carried out with electromagnetic shielding and infrared heat dispersion characterizes, result is as follows：
As can be seen from the above table, heat radiation coating of the present invention has preferably anti-effectiveness, has less table
Surface resistance and larger shield effectiveness, by modified to aqueous polyurethane emulsion hydroxyl-containing silicone in the present invention, improve table
The compatibility of face polyurethane material and granular materials so as to get face coat anti-effectiveness more preferable；By to carbon
Nanotube carries out hydroxylating modification, also improves its heat-conducting effect.
General principle and principal character and the advantages of the present invention of the present invention have been shown and described above.The skill of the industry
The simply explanation it should be appreciated that the present invention is not restricted to the described embodiments, described in above-described embodiment and specification for the art personnel
The principle of the present invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these
Changes and improvements both fall within scope of the claimed invention.Claimed scope by appending claims and
Its equivalent thereof.
Claims (8)
1. a kind of heat radiation coating with electromagnetic shielding is it is characterised in that include following components by weight：
30～50 parts of aqueous polyurethane emulsion, 5～8 parts of the CNT of surface hydroxylation, 2～4 parts of Graphene, nanometer titanium dioxide
5～8 parts of silicon, 3～5 parts of ammonium molybdate, 1～3 part of Al-Mg alloy powder, auxiliary agent 1.1-2.2 part, 20～40 parts of water, curing agent 6～10
Part.
2. a kind of heat radiation coating with electromagnetic shielding according to claim 1 it is characterised in that described auxiliary agent by weight
Part includes 0.1-0.5 part dispersant, 0.2-0.4 part adhesion promoter, 0.3～0.5 part of levelling agent, plasticizer 0.5～0.8
Part.
3. a kind of heat radiation coating with electromagnetic shielding according to claim 2 is it is characterised in that described dispersant is poly-
Phosphate；Described adhesion promoter is silane base silane；Described levelling agent is polyether-modified dimethyl silicone polymer, described increasing
Moulding agent is tri-n-butyl citrate.
4. a kind of heat radiation coating with electromagnetic shielding according to claim 1 is it is characterised in that described aqueous polyurethane
Emulsion is hydroxyl-containing silicone modified aqueous polyurethane, and preparation method is：By weight, by 10～30 parts of TDI, polyethers 8～20
Part, DMPA8～16 part, 10～18 parts of hydroxyl-containing silicone mix, and are warming up to 70～90 DEG C, add organotin catalysts 0.5
～3 parts carry out reacting 3～6h, add 5～10 parts of chain extender and carry out reacting 1～3h, add acetone diluting reaction thing, cooling
Afterwards add triethylamine in become salt, add water 10～20 parts of emulsifications, remove acetone under reduced pressure, emulsion may finally be obtained.
5. a kind of heat radiation coating with electromagnetic shielding according to claim 1 is it is characterised in that described surface hydroxylation
CNT be prepared as follows：By weight, by 0.1-0.5 part multi-walled carbon nano-tubes and 8-12 part in ball grinder
Potassium hydroxide mixes, plus ethanol in proper amount, and ball milling, after 15 hours, is washed with deionized reactant to neutral, CNT is put
Enter and obtain final product after being dried 12 hours in 100 DEG C of vacuum drying chambers.
6. a kind of heat radiation coating with electromagnetic shielding according to claim 1 is it is characterised in that also include 2-5 weight
Part polyether-containing aminopolysiloxane.
7. a kind of heat radiation coating with electromagnetic shielding described in 6 is required it is characterised in that described polyether modified amino according to profit
Silicone oil is prepared as follows：S1：Equipped with agitator, condenser pipe, the there-necked flask of thermometer, add 400 weight portion D4,
Stirring, is warming up to 115 DEG C, adds catalyst TMAH 0.24 weight portion, about insulation half an hour, treats that viscosity is obvious
Coupling agent N- β (aminoethyl)-γ-aminopropyltriethoxy dimethoxy silane 20.8 weight portion is added, temperature control is at 115 DEG C about after increase
6 hours, obtain amido silicon oil；S2：Equipped with agitator, condenser pipe, the 1000ml there-necked flask of thermometer, add 200 weight
The amido silicon oil of the above-mentioned synthesis of part, 150 parts by weight of activated polyethers, 105g isopropanol, at 80～92 DEG C, carry out back flow reaction, extremely
After reactant is transparent, it is further continued for being incubated four hours, finally under the conditions of 0.01MPa, cooling decompression sloughs isopropanol, obtains final product.
8. a kind of method preparing the heat radiation coating as claimed in claim 1 with electromagnetic shielding is it is characterised in that include following
Step：
By aqueous polyurethane emulsion, the CNT of surface hydroxylation, Graphene, nano silicon, ammonium molybdate, almag
Powder, auxiliary agent, water add in paint grinder mill after mixing and are ground to 30-50 μm, and ultrasonic disperse uniformly, adds curing agent mixing
Uniformly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610798312.0A CN106398509A (en) | 2016-08-31 | 2016-08-31 | Heat dissipation coating with electromagnetic shielding function and preparation method thereof |
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| CN201610798312.0A CN106398509A (en) | 2016-08-31 | 2016-08-31 | Heat dissipation coating with electromagnetic shielding function and preparation method thereof |
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| CN201610798312.0A Pending CN106398509A (en) | 2016-08-31 | 2016-08-31 | Heat dissipation coating with electromagnetic shielding function and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951282A (en) * | 2018-06-12 | 2018-12-07 | 中国电子科技集团公司第三十三研究所 | A kind of graphene/carbon nano-tube composite electromagnetic screen paper and preparation method thereof |
| CN112126038A (en) * | 2020-09-01 | 2020-12-25 | 中国电子科技集团公司第三十三研究所 | Flexible polyurethane-based carbon nano composite electromagnetic shielding material and preparation method thereof |
| CN114517422A (en) * | 2022-03-08 | 2022-05-20 | 湖南翠上环保科技有限公司 | Coating for paper products and preparation method thereof |
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| US20040116554A1 (en) * | 2001-11-29 | 2004-06-17 | Nirupama Karunaratne | White pearlescent paint compositions and coatings |
| CN105419421A (en) * | 2015-11-19 | 2016-03-23 | 中山宝立得高分子材料有限公司 | Cooling coating of water-based carbon nanotube and preparation method of cooling coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951282A (en) * | 2018-06-12 | 2018-12-07 | 中国电子科技集团公司第三十三研究所 | A kind of graphene/carbon nano-tube composite electromagnetic screen paper and preparation method thereof |
| CN112126038A (en) * | 2020-09-01 | 2020-12-25 | 中国电子科技集团公司第三十三研究所 | Flexible polyurethane-based carbon nano composite electromagnetic shielding material and preparation method thereof |
| CN114517422A (en) * | 2022-03-08 | 2022-05-20 | 湖南翠上环保科技有限公司 | Coating for paper products and preparation method thereof |
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