CN105251381A - Water-based graphite dispersion liquid and preparation method thereof - Google Patents
Water-based graphite dispersion liquid and preparation method thereof Download PDFInfo
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- CN105251381A CN105251381A CN201510740822.8A CN201510740822A CN105251381A CN 105251381 A CN105251381 A CN 105251381A CN 201510740822 A CN201510740822 A CN 201510740822A CN 105251381 A CN105251381 A CN 105251381A
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- watersoluble plumbago
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Abstract
The invention provides a water-based graphite dispersion liquid which comprises the following components in parts by weight: 20-35 parts of graphite micro powder, 5-15 parts of a humectant, 0.5-5 parts of a wetting agent, 1-5 parts of a dispersion agent, 0.1-1 part of a pH regulator, 0.3-5 parts of an anti-settling agent, 0.1-0.5 part of an antifoaming agent, and 30-60 parts of water. The invention also provides a preparation method of the water-based graphite dispersion liquid; compared with a conventional conductive graphite using oleoresin as a base medium, the water-based graphite dispersion liquid provided by the invention adopts the water as a dispersion medium, can be used for effectively avoiding severe contamination caused by volatilization of organic matters, and is a green chemical product; in addition, the water-based graphite dispersion liquid is good in dispersion performance, not only has a good conductive performance, and simultaneously has excellent performances of lubricating and the like. The water-based graphite dispersion liquid is simple in preparation method, easy in condition control, high in repeatability, and easy in large-scale popularization and utilization.
Description
Technical field
The invention belongs to Material Field, specifically relate to a kind of watersoluble plumbago dispersion suspension liquid and preparation method thereof.
Background technology
At present along with people are to environment and healthy pay attention to day by day, conventional lubricant, electrically-conducting paint, electrically conductive ink are greatly mainly with medium based on oleoresin, a large amount of volatile organic content (VOC) is discharged in production and use procedure, atmospheric environment is polluted, destroy the ecological balance, sizable harm is also caused to human body.
Along with the development of science and technology, water-based lubricant, waterborne conductive coating, water-soluble conducting ink, by large quantity research, take water as solvent, and environment-protecting asepsis is very popular.As a kind of important additive graphite, in the use procedure of moisture system, there are the problems such as difficult dispersion, free settling, compatibility difference, become the important bottleneck of restriction graphite water dispersant.
Summary of the invention
The technical problem to be solved in the present invention is, in order to overcome the defect existed in prior art, the invention provides superior watersoluble plumbago dispersion suspension liquid of a kind of environmental protection, dispersive property and preparation method thereof.
The present invention for solving the problems of the technologies described above adopted technical scheme is:
A kind of watersoluble plumbago dispersion suspension liquid, it comprises the component of following weight ratio: graphite microparticles 20 ~ 35, NMF 5 ~ 15, wetting agent 0.5 ~ 5, dispersant 1 ~ 5, PH conditioning agent 0.1 ~ 1, anti-settling agent 0.3 ~ 5, defoamer 0.1 ~ 0.5, water 30 ~ 60.
Described graphite microparticles is selected from native graphite or Delanium.
Described NMF is one in ethylene glycol or propane diols or its mixture.
Described wetting agent is one in anion surfactant or non-ionic surface active agent or its mixture, and described non-ionic surface active agent is chosen as APEO.
Described dispersant is one in ammonium polyacrylate salt, polyacrylic acid sodium salt or its blend.
Described PH conditioning agent is sodium hydroxide solution or By Amine Solutions, and the concentration of described sodium hydroxide solution is 25% ~ 30%.
Described anti-settling agent is one in methylcellulose, hydroxyethylcellulose, organobentonite, aerosil or its mixture.
Described defoamer is silicone defoaming agent, mineral oil antifoam agent or its mixture.
The particle diameter of described graphite microparticles is less than 1000 orders.
A preparation method for watersoluble plumbago dispersion suspension liquid, it comprises the following steps:
Get the component of following weight ratio: graphite microparticles 20 ~ 35, NMF 5 ~ 15 parts, wetting agent 0.5 ~ 5, dispersant 1 ~ 5, PH conditioning agent 0.1 ~ 1, anti-settling agent 0.3 ~ 5, defoamer 0.1 ~ 0.5, water 30 ~ 60;
NMF, wetting agent, dispersant and PH conditioning agent are added to the water, stir 10min, obtain mixed solution;
Joined by graphite microparticles in above-mentioned mixed solution, high-speed stirred 30min, obtains mixed slurry;
Above-mentioned mixed slurry is put into sand mill, is ground to described slurry fineness and is less than 10 μm;
Add anti-settling agent and defoamer in slurry after above-mentioned grinding, obtain watersoluble plumbago dispersion suspension liquid.
Beneficial effect of the present invention is: watersoluble plumbago dispersion suspension liquid provided by the invention adopts water as decentralized medium, compared with the electrically conductive graphite of medium based on traditional use oleoresin, the various pollutions that the volatilization which obviating organic substance brings, belong to the chemical products of environmental protection, and the good dispersion of this watersoluble plumbago dispersion suspension liquid, not only have and have good electric conductivity, and possess the excellent properties such as lubrication simultaneously.The preparation method of watersoluble plumbago dispersion suspension liquid of the present invention is simple, and condition easily controls, repeatable strong, is easy to large-scale promotion and utilizes.
Detailed description of the invention
Below the present invention is described in further details.
Embodiments provide a kind of watersoluble plumbago dispersion suspension liquid, it comprises the component of following weight ratio: graphite microparticles 20 ~ 35, NMF 5 ~ 15 parts, wetting agent 0.5 ~ 5, dispersant 1 ~ 5, PH conditioning agent 0.1 ~ 1, anti-settling agent 0.3 ~ 5, defoamer 0.1 ~ 0.5, water 30 ~ 60.Graphite microparticles can be selected from native graphite or Delanium, its particle diameter is less than 1000 orders, graphite is a kind of allotrope of elemental carbon, the periphery of each carbon atom links other three carbon atoms (arrangement mode is cellular multiple hexagons) and combines with covalent bond, form covalent molecule, generally can be used as refractory material, conductive material, wear-resisting lubriation material, pyrometallurgy material etc.; NMF is selected from ethylene glycol or propane diols or its mixture, and NMF is generally higher boiling water soluble alcohols, and it can play water retention, slurry can not be done too fast, alcohols has wettability simultaneously; Wetting agent is one in anion surfactant or non-ionic surface active agent or its mixture, described non-ionic surface active agent is APEO, wetting agent is by reducing surface tension or the interfacial tension of solid material, make water can be deployed in solid material on the surface, or penetrate its surface, solid material can be made more easily to be soaked in water; Dispersant is one in ammonium polyacrylate salt, polyacrylic acid sodium salt or its blend, dispersant is that one has lipophile and hydrophilic interfacial agent simultaneously, solid and the liquid particles that can make to be difficult to be dissolved in inorganic, the organic pigment of liquid are in a solvent dispersed, also can stop sedimentation and the cohesion each other of these particles simultaneously, form stable suspension; The acid-base value of the adjustable system of PH conditioning agent, general coating system is middle system or alkalescent, and dispersant is acidic materials mostly and make system be acid, therefore needing to carry out regulation system with alkaline solution makes it in neutral or alkalescent, PH conditioning agent is typically chosen in sodium hydroxide solution or By Amine Solutions, and the concentration of this sodium hydroxide solution is 25% ~ 30%; Anti-settling agent is the rheology control agent of a class coating, it makes coating have thixotropy, viscosity improves greatly, after viscosity improves, powder gathering in paint slurry is obstructed, not free settling, in this embodiment, anti-settling agent is chosen as one in methylcellulose, hydroxyethylcellulose, organobentonite, aerosil or its mixture; Add wetting agent in mixed liquor after, can produce foam in whipping process, foam can affect outward appearance and the performance of coating, so will add defoamer froth breaking, the most frequently used defoamer is silicone defoaming agent, mineral oil antifoam agent or its mixture.
Present invention also offers a kind of preparation method of watersoluble plumbago dispersion suspension liquid, it comprises the following steps:
1) component of following weight ratio is got respectively: graphite microparticles 20 ~ 35, NMF 5 ~ 15 parts, wetting agent 0.5 ~ 5, dispersant 1 ~ 5, PH conditioning agent 0.1 ~ 1, anti-settling agent 0.3 ~ 5, defoamer 0.1 ~ 0.5, water 30 ~ 60;
2) NMF, wetting agent, dispersant and PH conditioning agent are added to the water, keep stirring 10min, obtain mixed solution;
3) joined by graphite microparticles in above-mentioned mixed solution, high-speed stirred 30min, obtains mixed slurry;
4) above-mentioned mixed slurry being put into sand mill, being ground to the particle diameter of described graphite microparticles to being less than 10 μm;
5) add anti-settling agent and defoamer in the slurry after above-mentioned grinding, obtain watersoluble plumbago dispersion suspension liquid.
Particularly, below the composition citing of watersoluble plumbago dispersion suspension liquid is described in detail.
Embodiment 1
Present embodiments provide a kind of watersoluble plumbago dispersion suspension liquid, it comprises the component of following weight ratio: graphite microparticles 20, ethylene glycol 5, anion surfactant 5, ammonium polyacrylate salt 5, sodium hydroxide solution 1, methylcellulose 0.3, silicone defoaming agent 0.1, water 45, above-mentioned graphite is micro-is Delanium, and its particle diameter is 8um.
Embodiment 2
Present embodiments provide a kind of watersoluble plumbago dispersion suspension liquid, it comprises the component of following weight ratio: graphite microparticles 35, propane diols 15, polyoxyethylene ether nonionic surfactant 0.5, polyacrylic acid sodium salt 1, organic amine 0.1, hydroxyethylcellulose 5, mineral oil antifoam agent 0.5, water 60, above-mentioned graphite microparticles is native graphite, and its particle diameter is 10um.
Embodiment 3
Present embodiments provide a kind of watersoluble plumbago dispersion suspension liquid, it comprises the component of following weight ratio: graphite microparticles 27, the mixture of ethylene glycol and propane diols totally 10, polyoxyethylene ether nonionic surfactant 3, ammonium polyacrylate salt and polyacrylic acid sodium salt totally 3, sodium hydroxide solution 0.5, organobentonite 3, mineral oil antifoam agent 03, water 30, above-mentioned graphite microparticles is native graphite, and its particle diameter is 2um.
The present invention is not limited to the scope described by above-described embodiment, every within the scope of principles well-known to variant embodiment of the present invention, all within protection scope of the present invention.
Claims (10)
1. a watersoluble plumbago dispersion suspension liquid, is characterized in that, it comprises the component of following weight ratio: graphite microparticles 20 ~ 35, NMF 5 ~ 15, wetting agent 0.5 ~ 5, dispersant 1 ~ 5, PH conditioning agent 0.1 ~ 1, anti-settling agent 0.3 ~ 5, defoamer 0.1 ~ 0.5, water 30 ~ 60.
2. watersoluble plumbago dispersion suspension liquid according to claim 1, it is characterized in that, described graphite microparticles is selected from native graphite or Delanium.
3. watersoluble plumbago dispersion suspension liquid according to claim 1, is characterized in that, described NMF is one in ethylene glycol or propane diols or its mixture.
4. watersoluble plumbago dispersion suspension liquid according to claim 1, is characterized in that, described wetting agent is one in anion surfactant or non-ionic surface active agent or its mixture, and described non-ionic surface active agent is chosen as APEO.
5. watersoluble plumbago dispersion suspension liquid according to claim 1, is characterized in that, described dispersant is one in ammonium polyacrylate salt, polyacrylic acid sodium salt or its mixture.
6. watersoluble plumbago dispersion suspension liquid according to claim 1, is characterized in that, described PH conditioning agent is sodium hydroxide solution or By Amine Solutions, and the concentration of described sodium hydroxide solution is 25% ~ 30%.
7. watersoluble plumbago dispersion suspension liquid according to claim 1, is characterized in that, described anti-settling agent is one in methylcellulose, hydroxyethylcellulose, organobentonite, aerosil or its mixture.
8. watersoluble plumbago dispersion suspension liquid according to claim 1, is characterized in that, described defoamer is silicone defoaming agent, mineral oil antifoam agent or its mixture.
9. watersoluble plumbago dispersion suspension liquid according to claim 1, is characterized in that, the particle diameter of described graphite microparticles is less than 1000 orders.
10. a preparation method for watersoluble plumbago dispersion suspension liquid, is characterized in that, it comprises the following steps:
Get the component of following weight ratio: graphite microparticles 20 ~ 35, NMF 5 ~ 15 parts, wetting agent 0.5 ~ 5, dispersant 1 ~ 5, PH conditioning agent 0.1 ~ 1, anti-settling agent 0.3 ~ 5, defoamer 0.1 ~ 0.5, water 30 ~ 60;
NMF, wetting agent, dispersant and PH conditioning agent are added to the water, stir 10min, obtain mixed solution;
Graphite microparticles is joined in above-mentioned mixed solution, stir 30min, obtain mixed slurry;
Above-mentioned mixed slurry is put into sand mill, is ground to described slurry fineness and is less than 10 μm;
Add anti-settling agent and defoamer in slurry after above-mentioned grinding, namely obtain watersoluble plumbago dispersion suspension liquid.
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Cited By (5)
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| CN109253166A (en) * | 2018-10-23 | 2019-01-22 | 江苏新风网业有限公司 | A kind of self-lubricating bearing copper mesh and its manufacturing method |
| CN109778534A (en) * | 2017-11-14 | 2019-05-21 | 武汉鑫众源高分子科技有限公司 | A kind of aqueous wear-resistant agent and its production method |
| CN111441177A (en) * | 2020-04-02 | 2020-07-24 | 四川万润海纳科技有限公司 | Graphite coating fiber cloth composite material and preparation method thereof |
| CN113881284A (en) * | 2021-09-28 | 2022-01-04 | 惠科股份有限公司 | Nano graphite printing liquid, preparation method thereof and organic light-emitting diode |
| CN114163239A (en) * | 2021-11-12 | 2022-03-11 | 瑞泰马钢新材料科技有限公司 | Water-based carbon-containing sliding plate coating and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109778534A (en) * | 2017-11-14 | 2019-05-21 | 武汉鑫众源高分子科技有限公司 | A kind of aqueous wear-resistant agent and its production method |
| CN109253166A (en) * | 2018-10-23 | 2019-01-22 | 江苏新风网业有限公司 | A kind of self-lubricating bearing copper mesh and its manufacturing method |
| CN111441177A (en) * | 2020-04-02 | 2020-07-24 | 四川万润海纳科技有限公司 | Graphite coating fiber cloth composite material and preparation method thereof |
| CN113881284A (en) * | 2021-09-28 | 2022-01-04 | 惠科股份有限公司 | Nano graphite printing liquid, preparation method thereof and organic light-emitting diode |
| CN114163239A (en) * | 2021-11-12 | 2022-03-11 | 瑞泰马钢新材料科技有限公司 | Water-based carbon-containing sliding plate coating and preparation method thereof |
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