CN104974555A - Spherical copper powder with corrosion resistance and excellent thermal stability, and preparation method thereof - Google Patents
Spherical copper powder with corrosion resistance and excellent thermal stability, and preparation method thereof Download PDFInfo
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- CN104974555A CN104974555A CN201510376071.6A CN201510376071A CN104974555A CN 104974555 A CN104974555 A CN 104974555A CN 201510376071 A CN201510376071 A CN 201510376071A CN 104974555 A CN104974555 A CN 104974555A
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- copper powder
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Abstract
The invention discloses a spherical copper powder with corrosion resistance and excellent thermal stability. According to a preparation method, copolymerization modification is adopted for coating the spherical copper powder; acrylic acid, phenylethylene, and trihydroxymethylpropyl trimethylacrylate are taken as monomers, and nano titanium carbide and other effective additives are added at the same time; at 80 DEG C, the surfaces of block-shaped spherical copper powder are coated with a layer of impact copolymer membranes with benzene rings and carboxy groups via copolymerization, wherein the shell layer formed on the surfaces possesses shielding effect on the spherical copper powder, and is capable of improving oxidation resistance and changing surface charge properties of the spherical copper powder, weakening metal powder agglomeration acting force, and solving a problem that agglomeration of the obtained product is easily caused. The spherical copper powder can be applied to the field of conductive filler, and possesses corrosion resistance, and excellent thermal stability and electrical conductivity.
Description
Technical field
The present invention relates to metal powder material preparing technical field, be specifically related to good spherical copper powder of a kind of corrosion-resistant thermostability and preparation method thereof.
Background technology
Along with the development that science and technology is maked rapid progress, conducing composite material obtains investigation and application widely.Therefore conductive filler material as its chief component also causes people's research enthusiasm greatly, and the performance of conductive filler material, cost direct relation the conductivity of electro-conductive material, unfailing performance and economy.Spherical copper powder conductive filler material is because of its good resistance to metal migration performance, cost advantage; be considered to the substitute of a kind of great potential of silver base conductive filler expensive at present; but also there is the shortcomings such as antioxidant property deficiency, easily reunion, poorly conductive, perishable weathering resistance difference in spherical copper powder conductive filler material, limits its mass-producing application.As everyone knows, nano material is a kind of material with specific physical chemical property, and it has application very widely and remarkable modified effect in material modification.Be necessary to carry out modification to existing spherical copper powder for solving an above difficult problem, improve the oxidation-resistance of spherical copper powder, electroconductibility, the performance such as acidproof, alkaline-resisting, weather-proof, high temperature resistant, and then provide possibility as conductive filler material in the widespread use in the fields such as electrically conductive ink for realizing spherical copper powder.
Summary of the invention
Object of the present invention is just to provide good spherical copper powder of a kind of corrosion-resistant thermostability and preparation method thereof, to overcome the deficiencies in the prior art.
The object of the present invention is achieved like this:
The spherical copper powder that a kind of corrosion-resistant thermostability is good, it is characterized in that, be made up of the raw material of following weight part: block copper 100, vinylformic acid 0.35-0.55, vinylbenzene 0.55-1.25, trimethylolpropane trimethacrylate 7-12, nano titanium carbide 0.8-1.3, fluorocarbon resin 7-10, heavy calcium carbonate 2-4, calcium aluminate 0.2-0.4, β-dimethyl-aminoethylmethacrylate 4.1-6.6, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester 0.4-0.7, activated carbon fiber 3-5, propyl carbinol 51-61.
The preparation method of the spherical copper powder that described a kind of corrosion-resistant thermostability is good, is characterized in that comprising the following steps:
(1) activated carbon fiber is dried pulverizing, add nano titanium carbide stirring and evenly mixing, spray into the fluorocarbon resin ultrasonic wave dispersion 30-50 minute of molten state, dry and pulverize;
(2) β-dimethyl-aminoethylmethacrylate, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester are put into reactor and be warming up to 85-105 DEG C, add calcium aluminate and keep temperature to stir 2-4 hour, be cooled to room temperature;
(3) vinylformic acid, vinylbenzene, trimethylolpropane trimethacrylate are dropped into stirring and evenly mixing in propyl carbinol, add step (2) reaction mass, be warming up to 80-90 DEG C and keep temperature stirring reaction 4-6 hour;
(4) the block copper nitrogen after cleaning is dried up and is ground to 200-300 order, under nitrogen protection, add step (1), (3) material and other remaining component stirring and evenly mixings, in 80 DEG C of insulation coating reaction 4 hours, filter, cleaning dry up discharging with nitrogen.
The present invention has following beneficial effect: the present invention adopts modification by copolymerization method to carry out coating modification to spherical copper powder, with vinylformic acid, vinylbenzene, trimethylolpropane trimethacrylate is monomer, also add nano titanium carbide and other effective additives simultaneously, in 80 DEG C by the co-polymer membrane with phenyl ring and carboxyl of copolyreaction in the densification of block spherical copper powder Surface coating one deck, the shell that its surface is formed not only can play shielding effect to spherical copper powder, improve its antioxidant property, the surface charge property of spherical copper powder can also be changed, effectively weaken the reactive force between metal-powder reunion, improve the shortcoming that product is easily reunited, the spherical copper powder utilizing the present invention to obtain is applied in conductive filler material field, have corrosion-resistant, Heat stability is good, the advantages such as electroconductibility is good.
Embodiment
The spherical copper powder that described a kind of corrosion-resistant thermostability is good, it is characterized in that, be made up of the raw material of following weight part: block copper 100, vinylformic acid 0.52, vinylbenzene 0.8, trimethylolpropane trimethacrylate 11, nano titanium carbide 0.9, fluorocarbon resin 9, heavy calcium carbonate 3, calcium aluminate 0.2, β-dimethyl-aminoethylmethacrylate 5.1, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester 0.6, activated carbon fiber 4, propyl carbinol 58.
Making method comprises the following steps:
(1) activated carbon fiber is dried pulverizing, add nano titanium carbide stirring and evenly mixing, spray into the fluorocarbon resin ultrasonic wave dispersion 30-50 minute of molten state, dry and pulverize;
(2) β-dimethyl-aminoethylmethacrylate, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester are put into reactor and be warming up to 85-105 DEG C, add calcium aluminate and keep temperature to stir 2-4 hour, be cooled to room temperature;
(3) vinylformic acid, vinylbenzene, trimethylolpropane trimethacrylate are dropped into stirring and evenly mixing in propyl carbinol, add step (2) reaction mass, be warming up to 80-90 DEG C and keep temperature stirring reaction 4-6 hour;
(4) the block copper nitrogen after cleaning is dried up and is ground to 200-300 order, under nitrogen protection, add step (1), (3) material and other remaining component stirring and evenly mixings, in 80 DEG C of insulation coating reaction 4 hours, filter, cleaning dry up discharging with nitrogen.
The technical parameter index of the spherical copper powder using the present invention to produce is as follows:
(1) volume specific resistance declines 89.12%;
(2) oxidation resistance temperature improves 19.3 DEG C;
(3) in 2% dust technology, immersion was just dissolved completely after 2 hours, and acid resistance is strong.
Claims (2)
1. the spherical copper powder that a corrosion-resistant thermostability is good, it is characterized in that, be made up of the raw material of following weight part: block copper 100, vinylformic acid 0.35-0.55, vinylbenzene 0.55-1.25, trimethylolpropane trimethacrylate 7-12, nano titanium carbide 0.8-1.3, fluorocarbon resin 7-10, heavy calcium carbonate 2-4, calcium aluminate 0.2-0.4, β-dimethyl-aminoethylmethacrylate 4.1-6.6, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester 0.4-0.7, activated carbon fiber 3-5, propyl carbinol 51-61.
2. the making method of the spherical copper powder that a kind of corrosion-resistant thermostability according to claim 1 is good, is characterized in that comprising the following steps:
(1) activated carbon fiber is dried pulverizing, add nano titanium carbide stirring and evenly mixing, spray into the fluorocarbon resin ultrasonic wave dispersion 30-50 minute of molten state, dry and pulverize;
(2) β-dimethyl-aminoethylmethacrylate, sec.-propyl three (dioctylphyrophosphoric acid acyloxy) titanic acid ester are put into reactor and be warming up to 85-105 DEG C, add calcium aluminate and keep temperature to stir 2-4 hour, be cooled to room temperature;
(3) vinylformic acid, vinylbenzene, trimethylolpropane trimethacrylate are dropped into stirring and evenly mixing in propyl carbinol, add step (2) reaction mass, be warming up to 80-90 DEG C and keep temperature stirring reaction 4-6 hour;
(4) the block copper nitrogen after cleaning is dried up and is ground to 200-300 order, under nitrogen protection, add step (1), (3) material and other remaining component stirring and evenly mixings, in 80 DEG C of insulation coating reaction 4 hours, filter, cleaning dry up discharging with nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510376071.6A CN104974555A (en) | 2015-06-27 | 2015-06-27 | Spherical copper powder with corrosion resistance and excellent thermal stability, and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510376071.6A CN104974555A (en) | 2015-06-27 | 2015-06-27 | Spherical copper powder with corrosion resistance and excellent thermal stability, and preparation method thereof |
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| CN201510376071.6A Pending CN104974555A (en) | 2015-06-27 | 2015-06-27 | Spherical copper powder with corrosion resistance and excellent thermal stability, and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063064A (en) * | 1992-02-19 | 1992-07-29 | 北京市印刷技术研究所 | The surface treatment method of conductive copper powder |
| CN101265362A (en) * | 2008-05-07 | 2008-09-17 | 曲阜师范大学 | Method for processing function-stable metal organic composite material |
| CN102241965A (en) * | 2011-05-12 | 2011-11-16 | 秦如新 | Heat-conductive silicone grease paste and its preparation method |
| CN102911344A (en) * | 2012-10-18 | 2013-02-06 | 铜陵市陵阳化工有限责任公司 | Preparation method of cationic acrylate epoxy resin |
-
2015
- 2015-06-27 CN CN201510376071.6A patent/CN104974555A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063064A (en) * | 1992-02-19 | 1992-07-29 | 北京市印刷技术研究所 | The surface treatment method of conductive copper powder |
| CN101265362A (en) * | 2008-05-07 | 2008-09-17 | 曲阜师范大学 | Method for processing function-stable metal organic composite material |
| CN102241965A (en) * | 2011-05-12 | 2011-11-16 | 秦如新 | Heat-conductive silicone grease paste and its preparation method |
| CN102911344A (en) * | 2012-10-18 | 2013-02-06 | 铜陵市陵阳化工有限责任公司 | Preparation method of cationic acrylate epoxy resin |
Non-Patent Citations (1)
| Title |
|---|
| 李霞: "三元共聚法包覆片状铜锌合金粉", 《粉末冶金技术》 * |
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Application publication date: 20151014 |
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