CN1320666A - Submicron graphite particle filter cake, black-background electrically conductive paint and preparing process thereof - Google Patents
Submicron graphite particle filter cake, black-background electrically conductive paint and preparing process thereof Download PDFInfo
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- CN1320666A CN1320666A CN 00111024 CN00111024A CN1320666A CN 1320666 A CN1320666 A CN 1320666A CN 00111024 CN00111024 CN 00111024 CN 00111024 A CN00111024 A CN 00111024A CN 1320666 A CN1320666 A CN 1320666A
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Abstract
The present invention relates to the filter cake of submicron-class graphite particles, the black-background electrically conductive paint, and its preparing process. Said paint is prepared from said filter cake, carboxymethyl cellulose sodium, polyvinyl pyrrolidone, peach gum, ammonia water, acrylic resin, glycol, wet disperser and deionized water through proportioning, stirring, ball grinding, acid washing, water washing, acid washing, filtering, water washing and filtering. Its advantages are high quality and yield of product.
Description
The present invention relates to a kind of submicron order graphite particle filter cake, black-background electrically conductive paint and preparation method thereof, belong to the electronics chemical material field.
Black-background electrically conductive paint is teletron, shows and look effective a kind of electrically conducting coating that the submicron order graphite particle filter cake is the black-background electrically conductive paint intermediates, produces the submicron order graphite particle filter cake by the raw material graphite microparticles, further produces black-background electrically conductive paint again.
At present, existing black-background electrically conductive paint is poor in coating film forming, the pore-creating of development etching and opacifying power in the display screen black matrix is made, display screen contrast and resolving power are low, and existing preparation technology is: graphite microparticles (raw material) → making beating → grinding → dilution → rough segmentation → segmentation → magnetic separation → sedimentation → flocculation → tube bank separation → filter cake → making beating → pre-dispersed → emulsification disperses → allocates → and sieves → black-background electrically conductive paint; This technology exists following weak point when producing the submicron order graphite particle filter cake: 1, granularity is still thicker after vibration mill grinds, and size-grade distribution is unreasonable, and pattern is chunky shape or needle-like, and required sheet structure is not obvious.2, classification and separating device efficient are poor, and yield is very low.3, the iron removal by magnetic separation effect is bad, product filter cake iron-holder height, and ash content is big.4, extraction makes product filter cake organic matter higher repeatedly, is unfavorable for that postorder uses, because above some deficiency, the black-background electrically conductive paint that causes producing is difficult to reach the high quality requirement.
The objective of the invention is to overcome above-mentioned deficiency and a kind of submicron order graphite particle filter cake, black-background electrically conductive paint and preparation method thereof are provided.
The present invention realizes in the following manner: black-background electrically conductive paint is 1 with finished weight, the proportioning of each composition following (per-cent) submicron order graphite particle filter cake 8-21%, Xylo-Mucine 0.2-1% polyvinylpyrrolidone 0.1-1%, peach gum 0.4-1.2%, ammoniacal liquor 3.5-7.2%, sodium polyacrylate 0.01-0.08%, silicon sol 0-1.4%; Acrylic resin 0.2-4%; Ethylene glycol 0.1-0.6%; Wetting dispersing agent 0.05-1%, all the other deionized waters.
The preparation method of submicron order graphite particle filter cake and black-background electrically conductive paint thereof, its technical process is: graphite microparticles (raw material) → making beating → grinding → dilution → magnetic separation → sedimentation → flocculation → filtration-pickling → pickling filtration → washing → washing filtering → filter cake → making beating → pre-dispersed → emulsification disperses → allocates → sieves → black-background electrically conductive paint.
Wherein grind and adopt stirring mill, combination steel ball mill to be situated between and grinding aid, pickling employing pickling enamel reaction still, pickling is filtered and is adopted flame filter press, and filter cloth is a woven dacron.Enamel reaction still is adopted in washing, and washing filtering adopts flame filter press, and filter cloth is a woven dacron.
After adopting this prescription and this preparation technology, coating film forming, the pore-creating of development etching and strong covering power in the display screen black matrix is made, the contrast gradient and the resolving power of raising display screen; Adopt in the technological process to stir to grind and make up to grind to be situated between to replace vibration mill, make graphite particle keep sheet structure to greatest extent, elimination system macroparticle, adding grinding aid in the stirring mill reduces system viscosity, rheological property is improved, and particle size distributes rationally, possesses inferior luminescent material characteristic; Use the pickling enamel reaction still, the pickling flame filter press, the washing enamel reaction still, the washing flame filter press, and adopt the terylene filter cloth, make the iron level of filter cake product and ash content almost nil, and yield is greatly improved than old technology.
Be described in further details below in conjunction with drawings and the specific embodiments.
Accompanying drawing is preparation method's process flow sheet of the present invention;
The black-background electrically conductive paint formulation Example:
Embodiment 1: getting the finished product material is 1 (weight), and the per-cent of each composition is submicron order graphite particle filter cake 8%, Xylo-Mucine 0.2%, polyvinylpyrrolidone 0.1%, peach gum 0.4%, ammoniacal liquor 3.5%, two olefin(e) acid resin 0.2%.Ethylene glycol 0.1% wetting dispersing agent 0.05%, deionized water, making beating-pre-dispersed-emulsification disperses, and adds sodium polyacrylate 0.01% again, silicon sol 0.5% through allotment, sieve black-background electrically conductive paint.
Embodiment 2: getting finished product material weight is 1, each composition per-cent is: submicron order graphite particle filter cake 15% (weight percent), Xylo-Mucine 0.5%, polyvinylpyrrolidone 0.5%, peach gum 0.8%, ammoniacal liquor 5%, acrylic resin 2%, ethylene glycol 0.3% wetting dispersing agent 0.5%, go from water, disperse through making beating-pre-dispersed-emulsification, add sodium polyacrylate 0.05% again, silicon sol 1% through allotment, sieve black-background electrically conductive paint.
Embodiment 3: getting finished product material weight is 1, and each composition per-cent is: submicron order graphite particle filter cake 2 1% (weight percent), Xylo-Mucine 1%, polyvinylpyrrolidone 1%, peach gum 1.2%, ammoniacal liquor 7.5%, acrylic resin 4%, ethylene glycol 0.6%, wetting dispersing agent 1%, deionized water disperses through making beating-pre-dispersed-emulsification, add sodium polyacrylate 0.08% again, silicon sol 1.4% through the allotment, sieve black-background electrically conductive paint.
Preparation method embodiment:
In conjunction with the accompanying drawings, graphite microparticles (raw material) added in the high-speed emulsifying machine added deionized water and dispergator pull an oar, enter then and stir mill, adding combination steel ball mill in stirring mill is situated between and grinding aid, combination steel ball mill is situated between and grinding aid can make the pattern of graphite particle farthest keep sheet structure, eliminate the macroparticle system, rational size distribution, has inferior luminescent material characteristic, material after grinding enters into the dilution groove, adding deionized water in the dilution groove dilutes, material after the dilution enters the subsequent processing magnetic separator and carries out magnetic separation, select the iron filings in the material, enter the subsequent processing sedimentation again, sedimentation is to carry out in subsider, in the settling process impurity is discharged, and then enter subsequent processing flocculation groove, in the flocculation groove, add condensation agent (middle strong acid), filter by flame filter press then, filter cloth adopts woven dacron, filter out waste water, material after the filtration enters in the pickling enamel reaction still, add strong acid, and then filter, filter and still adopt flame filter press and terylene filter cloth, what leached this moment is acid waste water, enter the washing enamel reaction still again, add go from water wash, refilter after the washing, need to continue to add deionized water in the current filtration procedure, leach waste water and impurity and obtain the submicron order graphite particle filter cake, with the filter cake that obtains, deionized water, Xylo-Mucine, polyvinylpyrrolidone, peach gum, ammoniacal liquor, acrylic resin, ethylene glycol, wetting dispersing agent adds in the mulser one by one, adds auxiliary agent again and pulls an oar, the making beating after enter carry out in the ultrasonic oscillation decollator pre-dispersed, enter sand mill again and carry out emulsification and disperse, enter afterwards that stirring tank adds sodium polyacrylate again and silicon sol is allocated, sieve at last and obtain black-background electrically conductive paint.Grinding technics in the accompanying drawing is used the stirring mill instead by the vibrations mill of former technology, and increases steel ball combination mill Jie and grinding aid, and grinding effect is remarkable, rational size distribution, and all can save rough segmentation and separate three process with segmentation and tube bank; All filter and all adopt the terylene filter cloth, and favourable formation is filter membrane just, good filtration effect, and increase pickling and washing step, quality product and productive rate are greatly improved.
Claims (7)
1, a kind of black-background electrically conductive paint is characterized in that: with finished product material weight is 1, and the per-cent of each composition is: submicron order graphite particle filter cake 8-21%; Xylo-Mucine 0.2-1%; Polyvinylpyrrolidone 0.1-10%; Peach gum 0.4-1.2%; Ammoniacal liquor 3.5-7.2%; Sodium polyacrylate 0.01-0.08%; Silicon sol 0-1.4%; Acrylic resin 0.2-4%; Ethylene glycol 0.1-0.6%; Wetting dispersing agent 0.05-1%; All the other deionized waters.
2, the preparation method of a kind of submicron order graphite particle filter cake, black-background electrically conductive paint, its former technical process is: graphite microparticles (raw material) → making beating → grinding → dilution → rough segmentation → segmentation → magnetic separation → sedimentation → flocculation → tube bank separation → submicron order graphite particle filter cake → making beating → pre-dispersed → emulsification disperses → allocate → sieve → black-background electrically conductive paint, it is characterized in that: the grinding in the technical process is adopted and is stirred mill and grinding aid, combination steel ball mill is situated between; Save rough segmentation, segmentation and tube bank and separate three process, and after flocculation, increase operation filtration → pickling → pickling filtration → washing → washing filtering before the filter cake;
3, the preparation method of a kind of submicron order graphite particle filter cake according to claim 2, black-background electrically conductive paint is characterized in that: filter and adopt flame filter press, filter cloth is a woven dacron.
4, the preparation method of a kind of submicron order graphite particle filter cake according to claim 2, black-background electrically conductive paint is characterized in that: the pickling enamel reaction still is adopted in pickling, adds strong acid.
5, the preparation method of a kind of submicron order graphite particle filter cake according to claim 2, black-background electrically conductive paint is characterized in that: pickling is filtered and is adopted flame filter press, and filter cloth is a woven dacron.
6, the preparation method of a kind of submicron order graphite particle filter cake according to claim 2, black-background electrically conductive paint is characterized in that: the washing enamel reaction still is adopted in washing, adds deionized water.
7, the preparation method of a kind of submicron order graphite particle filter cake according to claim 2, black-background electrically conductive paint is characterized in that: washing filtering adopts flame filter press, and filter cloth is a woven dacron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001110241A CN1141342C (en) | 2000-04-21 | 2000-04-21 | Submicron graphite particle filter cake, black-background electrically conductive paint and preparing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001110241A CN1141342C (en) | 2000-04-21 | 2000-04-21 | Submicron graphite particle filter cake, black-background electrically conductive paint and preparing process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1320666A true CN1320666A (en) | 2001-11-07 |
| CN1141342C CN1141342C (en) | 2004-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB001110241A Expired - Fee Related CN1141342C (en) | 2000-04-21 | 2000-04-21 | Submicron graphite particle filter cake, black-background electrically conductive paint and preparing process thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406484C (en) * | 2006-01-10 | 2008-07-30 | 华侨大学 | Graphite/ potassium polyacrylic acid conductive hydrogel and its preparation method |
| CN102443484A (en) * | 2010-10-10 | 2012-05-09 | 张文知 | Multipurpose processing liquid of water-based nanometer flake graphite |
| CN104261398A (en) * | 2014-09-29 | 2015-01-07 | 广东东莞市天润电子材料有限公司 | Raw material for preparing graphene and preparation method thereof |
-
2000
- 2000-04-21 CN CNB001110241A patent/CN1141342C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406484C (en) * | 2006-01-10 | 2008-07-30 | 华侨大学 | Graphite/ potassium polyacrylic acid conductive hydrogel and its preparation method |
| CN102443484A (en) * | 2010-10-10 | 2012-05-09 | 张文知 | Multipurpose processing liquid of water-based nanometer flake graphite |
| CN102443484B (en) * | 2010-10-10 | 2015-11-25 | 王鸿灏 | Multipurpose processing liquid of water-based nanometer flake graphite |
| CN104261398A (en) * | 2014-09-29 | 2015-01-07 | 广东东莞市天润电子材料有限公司 | Raw material for preparing graphene and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1141342C (en) | 2004-03-10 |
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