CN105907258A - Antistatic epoxy resin-based heat dissipation powder coating and preparation method thereof - Google Patents
Antistatic epoxy resin-based heat dissipation powder coating and preparation method thereof Download PDFInfo
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- CN105907258A CN105907258A CN201610529738.6A CN201610529738A CN105907258A CN 105907258 A CN105907258 A CN 105907258A CN 201610529738 A CN201610529738 A CN 201610529738A CN 105907258 A CN105907258 A CN 105907258A
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- epoxy resin
- coating
- carbon nanotube
- heat dissipation
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- 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
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses an antistatic epoxy resin-based heat dissipation powder coating. Modified epoxy resin is obtained by taking bisphenol A and epoxy chloropropane as raw materials and a carbon nanotube as a heat-conducting filler, and the carbon nanotube and an epoxy group form acting force which is much greater than the Van der Waals force, so that stress transfer between the carbon nanotube and the epoxy group is facilitated, the interface bonding force and the compatibility between the carbon nanotube and the epoxy group are improved, and the storage stability of the coating is improved. Meanwhile, chitosan, a modified auxiliary material and the like are added as reinforcing fillers, so that the stretching vibration intensity of a carbon-chlorine bond in the composite material is weakened, the binding force of C and Cl atoms and peripheral atoms is strengthened, the dispersity of various components in the coating is improved, full contact of the carbon nanotube and the coating is prompted, an additional role of a physical crossing point is achieved, and a heat dissipation channel is formed to facilitate heat dissipation; the prepared coating has an antistatic property; and a film is good in durability, water resistance, corrosion resistance and adhesion property.
Description
Technical field
The present invention relates to powder coating technology field, particularly relate to a kind of Antistatic type epoxy resin-matrix heat-dissipation powder paint and preparation method thereof.
Background technology
Fast development along with modern science and technology, intensive and the miniaturization of the high frequency of electronic device, high speed and integrated circuit, the overall power density and the caloric value that make unit volume electronic device increase by a wide margin, so that the cooling problem of electronic device becomes increasingly to highlight.And the cooling capacity that the cooling system of routine can reach is by great challenge, especially in fields such as the energy, automobile, air-conditioning, agricultural, chemical industry, heating, Aero-Space, microelectronics, information, the technology such as augmentation 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 sapecial coating of system temperature.Powdery paints is a kind of novel without solvent 100% solid powdery coating, there is the advantages such as high usage, easy application, corrosion-resistant, environmental protection, modern times spraying and anticorrosion field of radiating are widely applied, heat-dissipation powder paint is coated with the radiating efficiency that can significantly improve electronic device on the electronic devices.
Epoxy resin is one of very important thermoset macromolecule material, has adhesion strength high, and electrical insulation capability is good, and the advantages such as shrinkage factor is low, good processability are widely used in each fields such as electronics, machinery, building.CNT has higher thermal conductivity, is therefore filled in epoxy resin as packing material by CNT and has good application prospect as a kind of heat sink material, but due to the nano effect of CNT, the most difficult dispersion of CNT.In order to improve CNT dispersibility in the epoxy, it is mostly by CNT graft modification, destroys the structure of CNT so that it is producing defect, these defects are conducive to the scattering of phonon, reduce the heat conductivility of CNT.So that improve existing method to improve CNT dispersibility in the epoxy.Situ aggregation method is due to the molecular weight of monomer, and viscosity is low, beneficially nanoparticle in monomer polymerization process in substrate dispersion, and the structure of situ aggregation method not destroying carbon nanometer tube.
" preparation of carbon nano tube/epoxy resin composite powder coatings and performance study a thereof " literary grace bisphenol-A and epoxychloropropane are raw material, and CNT, as strengthening and heat filling, is prepared for carbon nano tube/epoxy resin composite material by situ aggregation method.Result shows: along with increasing of content of carbon nanotubes, the properties of powdery paints gradually improves.Easily reunite yet with CNT bad dispersibility in composite powder coatings, when content of carbon nanotubes continues to increase, the properties of composite is deteriorated again, and the function of composite powder coatings that production technology in utilization literary composition and formula are prepared is the most single, product structure is single without characteristic, requirement in special environment cannot be met, need to be improved.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of Antistatic type epoxy resin-matrix heat-dissipation powder paint and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of Antistatic type epoxy resin-matrix heat-dissipation powder paint, is prepared by the raw materials in: bisphenol-A 33-37, epoxychloropropane 19-21, CNT 3.9-4.1, chitosan 2.1-2.5, phenyltrimethoxysila,e 3.2-3.5, copper sulfate 1-2, quartz fibre 6-8, TEPA 2-3, methyl silicate 5-7, wood leftover material 14-16, conductive black 4-6, pure-acrylic emulsion 8-10, chlorinated paraffin 3-5, pigment 5-6.
The manufacture method of described a kind of Antistatic type epoxy resin-matrix heat-dissipation powder paint, comprises the following steps:
(1) dried by wood leftover material, attrition grinding crosses 200 mesh sieves, adds pure-acrylic emulsion stirring and evenly mixing and stands 12-14 hour, and pelletize obtains premix material in 20-30 minute in 800-1000 DEG C of sintering under nitrogen protection；
(2) being calcined 2-3 hour at 600-700 DEG C by conductive black, discharging is cooled to 60 DEG C-80 DEG C, adds phenyltrimethoxysila,e, quartz fibre ultrasonic disperse 20-30 minute, add step (1) premix material, the abundant ball milling of copper sulfate, pelletize, particle diameter is 2-4 μm, obtains and modified helps material；
(3) bisphenol-A is put in the sodium hydroxide solution of 10% and be heated to 60 DEG C of stirring and evenly mixings, it is cooled to 55 DEG C and adds CNT ultrasonic disperse 30 minutes, it is warming up to 80 DEG C and adds epoxychloropropane, methyl silicate holding temperature ultrasonic disperse 4 hours, alternately and repeatedly being washed till neutrality with cold water and 80 DEG C of hot water, 50 DEG C of oven drying at low temperatures obtain modified epoxy；
(4) modified epoxy, chitosan and other residual componentss that step (3) prepares are put into stirring and evenly mixing in high-speed mixer, melt extrude through double screw extruder, cool down pulverizing, cross 250-300 mesh sieve, discharging.
The invention have the advantage that the present invention is with bisphenol-A and epoxychloropropane as raw material, CNT is heat filling, modified epoxy is obtained by situ aggregation method, CNT is made to form the active force much larger than Van der Waals force with epoxide group, be conducive to Stress Transfer between the two, improve interface binding power between the two and the compatibility, improve coating storage stability；Add chitosan, modification helps material etc. for reinforcer simultaneously, the stretching vibration strength reduction of carbon chlorine key in composite, C, Cl atom strengthens with the adhesion of neighboring atom, improve each component dispersibility in coating, promote CNT and coating to be fully contacted and play the effect of extra physical crosslinking point, form distributing of heat dissipation channel, beneficially heat, the coating prepared has antistatic behaviour, and
The persistency of film, water-fast, good corrosion resistance, adhesion property is good.
Detailed description of the invention
A kind of Antistatic type epoxy resin-matrix heat-dissipation powder paint, is prepared by the raw materials in: bisphenol-A 33, epoxychloropropane 19, CNT 3.9, chitosan 2.1, phenyltrimethoxysila,e 3.2, copper sulfate 1, quartz fibre 6, TEPA 2, methyl silicate 5, wood leftover material 14, conductive black 4, pure-acrylic emulsion 8, chlorinated paraffin 3, pigment 5.
The manufacture method of described a kind of Antistatic type epoxy resin-matrix heat-dissipation powder paint, comprises the following steps:
(1) dried by wood leftover material, attrition grinding crosses 200 mesh sieves, adds pure-acrylic emulsion stirring and evenly mixing and stands 12-14 hour, and pelletize obtains premix material in 20-30 minute in 800-1000 DEG C of sintering under nitrogen protection；
(2) being calcined 2-3 hour at 600-700 DEG C by conductive black, discharging is cooled to 60 DEG C-80 DEG C, adds phenyltrimethoxysila,e, quartz fibre ultrasonic disperse 20-30 minute, add step (1) premix material, the abundant ball milling of copper sulfate, pelletize, particle diameter is 2-4 μm, obtains and modified helps material；
(3) bisphenol-A is put in the sodium hydroxide solution of 10% and be heated to 60 DEG C of stirring and evenly mixings, it is cooled to 55 DEG C and adds CNT ultrasonic disperse 30 minutes, it is warming up to 80 DEG C and adds epoxychloropropane, methyl silicate holding temperature ultrasonic disperse 4 hours, alternately and repeatedly being washed till neutrality with cold water and 80 DEG C of hot water, 50 DEG C of oven drying at low temperatures obtain modified epoxy；
(4) modified epoxy, chitosan and other residual componentss that step (3) prepares are put into stirring and evenly mixing in high-speed mixer, melt extrude through double screw extruder, cool down pulverizing, cross 250-300 mesh sieve, discharging.
The storage stability utilizing the heat-dissipation powder paint that the present invention prepares improves 1 times than pure epoxy resin；Impact resistance is 37kg cm；Adhesive force and resistance to Neutral Salt Spray Corrosion grade are 2 grades；Thermal conductivity is 0.571W/mK.
Claims (2)
1. an Antistatic type epoxy resin-matrix heat-dissipation powder paint, it is characterized in that, be prepared by the raw materials in: bisphenol-A 33-37, epoxychloropropane 19-21, CNT 3.9-4.1, chitosan 2.1-2.5, phenyltrimethoxysila,e 3.2-3.5, copper sulfate 1-2, quartz fibre 6-8, TEPA 2-3, methyl silicate 5-7, wood leftover material 14-16, conductive black 4-6, pure-acrylic emulsion 8-10, chlorinated paraffin 3-5, pigment 5-6.
The manufacture method of a kind of Antistatic type epoxy resin-matrix heat-dissipation powder paint the most according to claim 1, it is characterised in that comprise the following steps:
(1) dried by wood leftover material, attrition grinding crosses 200 mesh sieves, adds pure-acrylic emulsion stirring and evenly mixing and stands 12-14 hour, and pelletize obtains premix material in 20-30 minute in 800-1000 DEG C of sintering under nitrogen protection；
(2) being calcined 2-3 hour at 600-700 DEG C by conductive black, discharging is cooled to 60 DEG C-80 DEG C, adds phenyltrimethoxysila,e, quartz fibre ultrasonic disperse 20-30 minute, add step (1) premix material, the abundant ball milling of copper sulfate, pelletize, particle diameter is 2-4 μm, obtains and modified helps material；
(3) bisphenol-A is put in the sodium hydroxide solution of 10% and be heated to 60 DEG C of stirring and evenly mixings, it is cooled to 55 DEG C and adds CNT ultrasonic disperse 30 minutes, it is warming up to 80 DEG C and adds epoxychloropropane, methyl silicate holding temperature ultrasonic disperse 4 hours, alternately and repeatedly being washed till neutrality with cold water and 80 DEG C of hot water, 50 DEG C of oven drying at low temperatures obtain modified epoxy；
(4) modified epoxy, chitosan and other residual componentss that step (3) prepares are put into stirring and evenly mixing in high-speed mixer, melt extrude through double screw extruder, cool down pulverizing, cross 250-300 mesh sieve, discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529738.6A CN105907258A (en) | 2016-07-07 | 2016-07-07 | Antistatic epoxy resin-based heat dissipation powder coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529738.6A CN105907258A (en) | 2016-07-07 | 2016-07-07 | Antistatic epoxy resin-based heat dissipation powder coating and preparation method thereof |
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| CN105907258A true CN105907258A (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610529738.6A Pending CN105907258A (en) | 2016-07-07 | 2016-07-07 | Antistatic epoxy resin-based heat dissipation powder coating and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159437A (en) * | 2011-12-15 | 2013-06-19 | 张国庆 | Temperature adjusting humidity adjusting coating and preparation method thereof |
| CN105585934A (en) * | 2014-10-29 | 2016-05-18 | 西安优信机电工程有限公司 | Preparation method of carbon-nano-tube-filled epoxy resin composite powdery coating |
-
2016
- 2016-07-07 CN CN201610529738.6A patent/CN105907258A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159437A (en) * | 2011-12-15 | 2013-06-19 | 张国庆 | Temperature adjusting humidity adjusting coating and preparation method thereof |
| CN105585934A (en) * | 2014-10-29 | 2016-05-18 | 西安优信机电工程有限公司 | Preparation method of carbon-nano-tube-filled epoxy resin composite powdery coating |
Non-Patent Citations (1)
| Title |
|---|
| 袭肖光等: "碳纳米管/环氧树脂复合粉末涂料的制备及其性能研究", 《浙江理工大学学报》 * |
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