CN105131726A - Thermoplastic heat-dissipating coating material and preparation method thereof - Google Patents
Thermoplastic heat-dissipating coating material and preparation method thereof Download PDFInfo
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- CN105131726A CN105131726A CN201510495763.2A CN201510495763A CN105131726A CN 105131726 A CN105131726 A CN 105131726A CN 201510495763 A CN201510495763 A CN 201510495763A CN 105131726 A CN105131726 A CN 105131726A
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Abstract
The present invention discloses a thermoplastic heat-dissipating coating material, which comprises the following raw materials by weight: 0.8-2 parts of trithiocyanuric acid, 3-4 parts of myristyl alcohol oleate, 3-5 parts of a thermoplastic polyurethane elastomer, 12-15 parts of a styrene-maleic anhydride copolymer, 6-10 parts of propargyl alcohol, 0.6-1 part of calcium acetylacetonate, 90-100 parts of tetrahydrofuran, 4-7 parts of graphene, 16-20 parts of nanometer silica, 0.4-0.5 part of a silane coupling agent KH560, 700-800 parts of dimethylformamide, 4-5 parts of sodium nitride, 0.04-0.05 part of aluminum trichloride, 1.6-2 parts of a 2-3% sodium ascorbate solution, 1.8-2 parts of a 2-3% copper sulfate solution, 120-130 parts of high-density polyethylene, 0.3-1 part of polyethyleneimine, and 0.01-0.02 part of 96-98% sulfuric acid. According to the present invention, with the added thermoplastic polyurethane elastomer, the compatibility between the particles and the resin can be improved so as to improve the surface toughness and the strength of the coating film.
Description
Technical field
The present invention relates to heat radiation coating technical field, particularly relate to a kind of thermoplasticity heat radiation coating and preparation method thereof.
Background technology
Along with the fast development of modern science and technology, intensive and the miniaturization of the high frequency of electron device, high speed and unicircuit, the overall power density of unit volume electron device and thermal value are increased by a wide margin, thus makes the cooling problem of electron device become more and more outstanding.And the cooling power that the cooling system of routine can reach is subject to great challenge, especially in fields such as the energy, automobile, air-conditioning, agricultural, chemical industry, heating, aerospace, microelectronics, information, the technology such as enhancement of heat transfer, raising radiating efficiency are had higher requirement.And heat radiation coating is a kind of body surface radiating efficiency that improves, reduce the speciality coating of system temperature, heat radiation coating is coated with the radiating efficiency that can improve electron device on the electronic devices;
Nano silicon is because having in tridimensional network, and stability, reinforcing and thickening property is superior, low price, the feature such as easily to produce, is widely used in corrosion protection coating, to improve carrying and the antiseptic power of coating.The specific surface area of nano silicon is large, and specific surface energy is high, and easily occur in the coating reunite and form offspring, cause the performance of activeness and quietness to reduce, the hydroxyl on its surface also enhances this kind of phenomenon simultaneously.Therefore, improving the dispersiveness of nanosized SiO_2 in organic coating is problem demanding prompt solution.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of thermoplasticity heat radiation coating and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of thermoplasticity heat radiation coating, it is made up of the raw material of following weight parts:
Trithiocyanuric acid 0.8-2, tetradecyl alcohol oleic acid ester 3-4, Polyurethane Thermoplastic Elastomer 3-5, styrene-maleic anhydride copolymer 12-15, propiolic alcohol 6-10, calcium acetylacetonate 0.6-1, tetrahydrofuran (THF) 90-100, Graphene 4-7, nano silicon 16-20, silane coupling agent KH5600.4-0.5, dimethyl formamide 700-800, sodium nitride 4-5, aluminum chloride 0.04-0.05, 2-3% sodium ascorbate solution 1.6-2, 2-3% copper-bath 1.8-2, high density polyethylene(HDPE) 120-130, polymine 0.3-1, the sulfuric acid 0.01-0.02 of 96-98%.
A preparation method for described thermoplasticity heat radiation coating, comprises the following steps:
(1) get the 18-25% of above-mentioned silane coupling agent KH560 weight, join in the ethanolic soln of 30-40 times of 16-20%, stir, add tetradecyl alcohol oleic acid ester, raised temperature is 60-65 DEG C, 800-1000 rev/min and stirs 3-5 minute, obtains esterification silane;
(2) joined in 3-4 times of Virahol by above-mentioned trithiocyanuric acid, stir, add polymine, raised temperature is 60-70 DEG C, drip the sulfuric acid of above-mentioned 96-98%, after dropwising, add above-mentioned Polyurethane Thermoplastic Elastomer, insulation reaction 2-3 hour, cooling, obtains pre-treatment elastomerics;
(3) by above-mentioned esterification silane, the mixing of pre-treatment elastomerics, stir, add calcium acetylacetonate, 100-200 rev/min is stirred 30-40 minute, and distillation, sloughs ethanol, Virahol, suction filtration, washed 3-4 time by filter cake, vacuum-drying, obtain modified elastomer;
(4) by styrene-maleic anhydride copolymer, propiolic alcohol, tetrahydrofuran (THF) mixing, insulated and stirred 10-16 hour at 50-60 DEG C, underpressure distillation, removing liquid, vacuum-drying, obtains alkynyl multipolymer;
(5) by Graphene, nano silicon mixing, ball milling 30-40 minute;
(6) get above-mentioned ball milling particle, join in 20-30 toluene doubly, ultrasonic disperse 2-3 hour, adds silane coupling agent KH560, and raised temperature is 86-90 DEG C, insulated and stirred 10-12 hour, cooling, suction filtration, and vacuum-drying, obtains silanization nanoparticle;
(7) get the 46-50% of above-mentioned dimethyl formamide weight, add silanization nanoparticle, ultrasonic disperse 2-3 hour, add sodium nitride, aluminum chloride, stir 24-25 hour, suction filtration at 30-35 DEG C, washing, vacuum-drying, obtains Sodium Azide rice corpuscles;
(8) by above-mentioned Sodium Azide rice corpuscles, alkynyl multipolymer, modified elastomer mixing, join in remaining dimethyl formamide, nitrogen bubble 30-40 minute, add 2-3% sodium ascorbate solution, 2-3% copper-bath successively, react 20-24 hour at being placed in 76-80 DEG C, suction filtration, filter cake is respectively washed 2-3 time with distilled water, dimethyl formamide, acetone successively, after vacuum-drying, obtain engrafted nanometer particle;
(9) mixed with each raw material of residue by above-mentioned engrafted nanometer particle, stir, be sent to twin screw extruder, melt extrude, cooling, pulverizes and sieves, to obtain final product.
Advantage of the present invention is:
(1) coating of the present invention has good shock resistance:
Graphene, nano silicon all have larger specific surface area, can strengthen Graphene, reactive force between nano silicon and polyvinyl resin, put forward heavily stressed transfer efficiency, and then improve its shock resistance;
(2) coating of the present invention has good erosion resistance;
Graphene, nano silicon in the medium-altitude dispersion of resin, can form fine and close film, corrosive medium is more difficult to be penetrated in coating by this interface, well improves corrosion resistance;
(3) coating of the present invention has good heat conduction and heat radiation:
First the present invention prepares the styrene-maleic anhydride copolymer containing multiple alkynyl on molecular chain, then modified Nano particle, its surface is made to introduce multiple azido-, finally utilize " click " chemical method at particle surface graftomer, polymer molecular chain has multiple point to be grafted to particle surface, molecular chain " is crouched down " at particle surface, thus it is coated what do not need to realize under the condition introducing number of polymers chain to particle, obtain grafting density high, the nanoparticle of good dispersity, strengthen its dispersiveness in resin matrix, the two-dimension plane structure of Graphene that is scattered here and there in resin and the tridimensional network of nano silicon can form stable heat conduction network, greatly improve the transmission of heat, play good heat conduction and heat radiation effect.
The Polyurethane Thermoplastic Elastomer that the present invention adds can improve the consistency of particle and interlaminar resin, improves film coated surface wilfulness and intensity.
Embodiment
A kind of thermoplasticity heat radiation coating, it is made up of the raw material of following weight parts:
The sulfuric acid 0.01 of trithiocyanuric acid 0.8, tetradecyl alcohol oleic acid ester 3, Polyurethane Thermoplastic Elastomer 3, Zelan 338 12, propiolic alcohol 6, calcium acetylacetonate 0.6, tetrahydrofuran (THF) 90, Graphene 4, nano silicon 16, silane coupling agent KH5600.4, dimethyl formamide 700, sodium nitride 4, aluminum chloride 0.04,2% sodium ascorbate solution 1.6,2% copper-bath 1.8, high density polyethylene(HDPE) 120, polymine 0.3,96%.
A preparation method for described thermoplasticity heat radiation coating, comprises the following steps:
(1) get 18% of above-mentioned silane coupling agent KH560 weight, join in the ethanolic soln of 30 times 16%, stir, add tetradecyl alcohol oleic acid ester, raised temperature is 60 DEG C, and 800 revs/min are stirred 3 minutes, obtain esterification silane;
(2) joined in 3 times of Virahols by above-mentioned trithiocyanuric acid, stir, add polymine, raised temperature is 60 DEG C, drip the sulfuric acid of above-mentioned 96%, after dropwising, add above-mentioned Polyurethane Thermoplastic Elastomer, insulation reaction 2 hours, cooling, obtains pre-treatment elastomerics;
(3) by above-mentioned esterification silane, the mixing of pre-treatment elastomerics, stir, add calcium acetylacetonate, 100 revs/min are stirred 30 minutes, and distillation, sloughs ethanol, Virahol, suction filtration, filter cake is washed 3 times, vacuum-drying, obtain modified elastomer;
(4) by Zelan 338, propiolic alcohol, tetrahydrofuran (THF) mixing, insulated and stirred 10 hours at 50 DEG C, underpressure distillation, removing liquid, vacuum-drying, obtains alkynyl multipolymer;
(5) by Graphene, nano silicon mixing, ball milling 30 minutes;
(6) get above-mentioned ball milling particle, join in the toluene of 20 times, ultrasonic disperse 2 hours, adds silane coupling agent KH560, and raised temperature is 86 DEG C, insulated and stirred 10 hours, cooling, suction filtration, and vacuum-drying, obtains silanization nanoparticle;
(7) get 46% of above-mentioned dimethyl formamide weight, add silanization nanoparticle, ultrasonic disperse 2 hours, adds sodium nitride, aluminum chloride, stirs 24 hours, suction filtration at 30 DEG C, washing, and vacuum-drying, obtains Sodium Azide rice corpuscles;
(8) by above-mentioned Sodium Azide rice corpuscles, alkynyl multipolymer, modified elastomer mixing, join in remaining dimethyl formamide, nitrogen bubble 30 minutes, add 2% sodium ascorbate solution, 2% copper-bath successively, react 20 hours at being placed in 76 DEG C, suction filtration, respectively washs 2 times with distilled water, dimethyl formamide, acetone successively by filter cake, after vacuum-drying, obtain engrafted nanometer particle;
(9) mixed with each raw material of residue by above-mentioned engrafted nanometer particle, stir, be sent to twin screw extruder, melt extrude, cooling, pulverizes and sieves, to obtain final product.
Performance test:
Appearance of film: flat smooth, without shrinkage cavity, free of pinholes;
Just recoiling test: pass through;
Pencil hardness test: 2H is without scuffing;
Sticking power and resistance to Neutral Salt Spray Corrosion grade are 2 grades;
Thermal conductivity is 0.480W/mK.
Claims (2)
1. a thermoplasticity heat radiation coating, is characterized in that what it was made up of the raw material of following weight parts:
Trithiocyanuric acid 0.8-2, tetradecyl alcohol oleic acid ester 3-4, Polyurethane Thermoplastic Elastomer 3-5, styrene-maleic anhydride copolymer 12-15, propiolic alcohol 6-10, calcium acetylacetonate 0.6-1, tetrahydrofuran (THF) 90-100, Graphene 4-7, nano silicon 16-20, silane coupling agent KH5600.4-0.5, dimethyl formamide 700-800, sodium nitride 4-5, aluminum chloride 0.04-0.05, 2-3% sodium ascorbate solution 1.6-2, 2-3% copper-bath 1.8-2, high density polyethylene(HDPE) 120-130, polymine 0.3-1, the sulfuric acid 0.01-0.02 of 96-98%.
2. a preparation method for thermoplasticity heat radiation coating as claimed in claim 1, is characterized in that comprising the following steps:
(1) get the 18-25% of above-mentioned silane coupling agent KH560 weight, join in the ethanolic soln of 30-40 times of 16-20%, stir, add tetradecyl alcohol oleic acid ester, raised temperature is 60-65 DEG C, 800-1000 rev/min and stirs 3-5 minute, obtains esterification silane;
(2) joined in 3-4 times of Virahol by above-mentioned trithiocyanuric acid, stir, add polymine, raised temperature is 60-70 DEG C, drip the sulfuric acid of above-mentioned 96-98%, after dropwising, add above-mentioned Polyurethane Thermoplastic Elastomer, insulation reaction 2-3 hour, cooling, obtains pre-treatment elastomerics;
(3) by above-mentioned esterification silane, the mixing of pre-treatment elastomerics, stir, add calcium acetylacetonate, 100-200 rev/min is stirred 30-40 minute, and distillation, sloughs ethanol, Virahol, suction filtration, washed 3-4 time by filter cake, vacuum-drying, obtain modified elastomer;
(4) by styrene-maleic anhydride copolymer, propiolic alcohol, tetrahydrofuran (THF) mixing, insulated and stirred 10-16 hour at 50-60 DEG C, underpressure distillation, removing liquid, vacuum-drying, obtains alkynyl multipolymer;
(5) by Graphene, nano silicon mixing, ball milling 30-40 minute;
(6) get above-mentioned ball milling particle, join in 20-30 toluene doubly, ultrasonic disperse 2-3 hour, adds silane coupling agent KH560, and raised temperature is 86-90 DEG C, insulated and stirred 10-12 hour, cooling, suction filtration, and vacuum-drying, obtains silanization nanoparticle;
(7) get the 46-50% of above-mentioned dimethyl formamide weight, add silanization nanoparticle, ultrasonic disperse 2-3 hour, add sodium nitride, aluminum chloride, stir 24-25 hour, suction filtration at 30-35 DEG C, washing, vacuum-drying, obtains Sodium Azide rice corpuscles;
(8) by above-mentioned Sodium Azide rice corpuscles, alkynyl multipolymer, modified elastomer mixing, join in remaining dimethyl formamide, nitrogen bubble 30-40 minute, add 2-3% sodium ascorbate solution, 2-3% copper-bath successively, react 20-24 hour at being placed in 76-80 DEG C, suction filtration, filter cake is respectively washed 2-3 time with distilled water, dimethyl formamide, acetone successively, after vacuum-drying, obtain engrafted nanometer particle;
(9) mixed with each raw material of residue by above-mentioned engrafted nanometer particle, stir, be sent to twin screw extruder, melt extrude, cooling, pulverizes and sieves, to obtain final product.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111004518A (en) * | 2019-10-17 | 2020-04-14 | 江苏宏远新材料科技有限公司 | Conductive modified thermoplastic elastomer composite film and preparation method thereof |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108234A (en) * | 2010-12-22 | 2011-06-29 | 白铁林 | Colourful environmental-friendly synthesized polymer waterproof paint |
| CN103756424A (en) * | 2014-01-15 | 2014-04-30 | 芜湖市宝艺游乐科技设备有限公司 | Electroplating-imitation heat dissipation coating |
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| CN111004518A (en) * | 2019-10-17 | 2020-04-14 | 江苏宏远新材料科技有限公司 | Conductive modified thermoplastic elastomer composite film and preparation method thereof |
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