CN103194123A - Aqueous nano-paste and preparation method thereof - Google Patents
Aqueous nano-paste and preparation method thereof Download PDFInfo
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- CN103194123A CN103194123A CN2012100033379A CN201210003337A CN103194123A CN 103194123 A CN103194123 A CN 103194123A CN 2012100033379 A CN2012100033379 A CN 2012100033379A CN 201210003337 A CN201210003337 A CN 201210003337A CN 103194123 A CN103194123 A CN 103194123A
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Abstract
The invention belongs to the nano-technological field, and concretely relates to an aqueous nano-paste and a preparation method thereof. The paste is composed of nanoscale pigment particles, water, a specially prepared dispersant and an assistant, and the pigment particles can be ground to below 100nm through the improvement of a grinding device and can stably stay in an aqueous system for a long term under the dispersion action of the high-molecular dispersant having a specially-prepared star-shaped structure. The aqueous nano-paste prepared in the invention has the advantages of small granularity, narrow distribution, good stability, environmental protection and safety, can be used for preparing high-order coatings, inkjet printer ink, ink and pigment photoresists for digital inkjet printing devices, and the like, and has a broad application prospect.
Description
Technical field
The invention belongs to field of nanometer technology, be specifically related to a kind of water nano mill base and preparation method thereof.
Background technology
Inkjet technology is a kind of contactless printing technique, and pattern is to lean on the small ink droplet of different colours directly to mix formation at material surface.Therefore, the formation of ink droplet, shape and size have very important influence to the quality of ink-jet printed pattern.The droplet jet volume of present commercial printing head is little of 1～1.5 * 10
-12Rise, research and development and the production of this logarithmic code ink for ink-jet print are had higher requirement.Common indoor China ink-type of dye ink (Dye-based Ink) is the molecular level CL, and ink is composite solution completely, is difficult to the spanishing head; Be easy to absorbed after the air brushing, beautiful in colour; But non-watertight, and because of dye molecule very fast decomposition under uviolizing, outdoor use just had obviously in one month fades.Now the employed pigment of outdoor ink-pigment ink (Pigment Ink) of widespread usage is with our the print and dye pigment same property of clothing, be that solid pigment is ground to form hundreds of small-particles to thousands of nanometers, be dissolved in the special aqueous solvent and (contain a lot of pure constituents), be a kind of aaerosol solution of similar colloid or be half solution.Because of apparent color be solid particulate, at first be the waterproof of pigment own, as long as material also waterproof just solved the problem of waterproof; Next is under uviolizing, and the volume ratio dyestuff is bigger, and molecule is difficult for decomposing, even the outer field molecular breakdown of particle, internal layer equally can keep color, can keep there is not obvious shank color more than 1 year generally speaking out of doors (not under the theory state of overlay film); But its shortcoming is to make the color performance bad because perviousness is bad, with indoor ink ratio obfuscation burnt hair; Simultaneously, because being easily blocking sprayer of solid particulate.
In order to address these problems, at first the granules of pigments granularity to be become littler.Desire to make the performances such as tinctorial strength, gloss, transparency of pigments system to reach best, the particle diameter of pigment must be reduced to less level, and it is more even to make it to distribute.Especially in ink-jet printed because the restriction of jet size, to the size of pigment have certain requirement (median size of general requirement pigment below 500 nanometers, but at present good ink granules of pigments can to reach 200 nanometers following).The traditional method of pigment super-refinement mainly is to use ball mill or sand mill, adds a certain amount of hard abrasive, fully grinding reduces pigment particles.We can improve its mill efficiency by after commercial sand mill being carried out the inside repacking, obtain the following granules of pigments of particle diameter 100 nanometers.Further, after the pigment particles super-refinement, must manage to make it stable, prevent from reassembling between the particle, otherwise will have a strong impact on its application.For example, ink-jet printed when use ink in preparation, the superfine pigment dispersion system must have extraordinary stability, otherwise very easily takes place to reunite and the obstruction shower nozzle, causes enormous economic loss.But the superfine pigment particle diameter is very little, and bigger specific surface area and surface energy are arranged, and makes it the fully stable certain difficulty that has.Adding dispersion agent in system, is to make it to stablize necessary condition.In recent years, people forward the emphasis of dispersion agent research to the macromolecule dispersing agent aspect gradually.Macromolecule dispersing agent except the electrical property that changes surface of pigments, can also provide effective steric hindrance repulsion in the dispersing of pigments stabilization process, dispersion stabilization is better than traditional dispersion agent greatly.The research to macromolecule dispersing agent abroad starts from the seventies in 20th century, and has formally proposed the concept of macromolecule dispersing agent in the mid-80, has released related products simultaneously.China starts late to the research of macromolecule dispersing agent, and the report of macromolecule dispersing agent is just arranged in the early 1990s.Although the multiple macromolecule dispersing agent of having developed on the market respectively has characteristics, generally can only be used for the aqueous dispersion of ultra-fine inorganic pigment and stock size (tens microns) pigment dyestuff.For ultra-fine (particle diameter is in the hundreds of nanometer) pigment dyestuff dispersion system, still there are not excellent property, commercially produced product with low cost so far.Domesticly also just develop this type of dispersion agent in active research, develop the macromolecule dispersing agent of some kinds, be mainly used in non-aqueous system; For the research well afoot of the macromolecule dispersing agent that can be used for water-based system, range of product is few, and effect is all undesirable.Macromolecule dispersing agent in the market mainly is that AB, ABA molded lines shape block or graft copolymer are as macromolecule dispersing agent.
At above situation, a kind of tinctorial strength, coloured light, weather resisteant are good in order to develop, antibacterial and mouldproof and in stable condition mill base product, the invention provides a kind of novel high polymer dispersion agent, this dispersion agent has unique star structure, the segment that has favourable absorption or weak anchor (keyed jointing) effect with the pigment nano grain surface can be provided, and the hydrophilic segment of non-ionic type, the design of many hydrophilic chains makes it to guarantee the stability of aqueous color paste system for granules of pigments provides better water dispersible and sterically hindered.Simultaneously, by the improvement to grinding plant, granules of pigments can be ground to below 100 nanometers, thereby obtain real nano level aqueous color paste.The water nano mill base of the present invention's preparation, granularity is little, narrowly distributing, stable good, can be used for the preparation of products such as high-grade paint, ink for ink-jet printer, digital ink-jet printed equipment usefulness ink and pigment photoresistor agent, has broad application prospects.
Summary of the invention
The object of the present invention is to provide a kind of water nano mill base with good dispersion and excellent performance of stability and preparation method thereof.
Water nano mill base provided by the invention is after earlier each component evenly being disperseed, to enter circular grinding in the sand mill, obtains the water nano mill base, and this mill base is made up of pigment, water, dispersion agent and auxiliary agent, and the weight percent of each component is as follows:
Its total amount satisfies 100%.
Preferably, described water nano mill base is characterized in that described dispersion agent is polyacrylic acid and polyoxyethylated multipolymer, and this multipolymer is radial copolymer, have a polyacrylic acid chain and three polyoxyethylene chains, the weight-average molecular weight of this multipolymer is 5 * 10
3～2 * 10
4
Preferably, described water nano mill base is characterized in that described pigment is one or more in carbon black or the pigment dyestuff commonly used.
Preferably, described water nano mill base is characterized in that the auxiliary agent of described auxiliary agent for adding according to the concrete purposes of mill base, as defoamer, sanitas etc.
Preferably, described water nano mill base is characterized in that described water nano mill base can be used for the preparation of products such as high-grade paint, ink for ink-jet printer, digital ink-jet printed equipment usefulness ink and pigment photoresistor agent.
The present invention also provides a kind of preparation method of water nano mill base, it is characterized in that concrete steps are as follows: get 5%～40% dispersion agent and 0～5% auxiliary agent in proportion, be dissolved in the deionized water, the pigment that adds 5%～80% weight ratio then, in high speed dispersor, disperseed 10～60 minutes, each component thoroughly is uniformly dispersed, cross 200 eye mesh screens at last, the particle that elimination is excessive gets Preblend; Preblend is imported in the container of stirring at low speed through infusion pump, solution enters thus in the horizontal sand mill of repacking and carries out circular grinding, grinds 2～8 hours, makes the fineness of granules of pigments reach 80～120 nanometers, filter the back and collect lapping liquid, encapsulation namely gets water nano mill base product.
With respect to scheme of the prior art, the invention has the advantages that: improved grinding plant makes that granules of pigments can be carefully to 100 nanometers; Adopt the macromolecule dispersing agent of unique star structure, make the nano dye particle can stable dispersion in water-based system, thereby obtain real nano level aqueous color paste.The water nano mill base of the present invention's preparation, granularity is little, narrowly distributing, stable good, can be used for the preparation of products such as high-grade paint, ink for ink-jet printer, digital ink-jet printed equipment usefulness ink and pigment photoresistor agent, has broad application prospects.
Embodiment
Below in conjunction with specific embodiment such scheme is described further.Should be understood that these embodiment are not limited to limit the scope of the invention for explanation the present invention.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
Embodiment 1:
Get 8% dispersion agent and 0.02% defoamer by weight, be dissolved in the deionized water, add the Pigment Yellow 73 P.Y.150 of 40% weight ratio then, in high speed dispersor, disperseed 50 minutes, each component thoroughly is uniformly dispersed, cross 200 eye mesh screens at last, the particle that elimination is excessive gets Preblend; In the container of infusion pump input stirring at low speed, solution enters thus in the horizontal sand mill of repacking and carries out circular grinding, grinds 6 hours, filters the back and collects lapping liquid, encapsulates and namely gets water nano mill base product with Preblend.Laser particle analyzer records that the fineness of granules of pigments reaches 103 nanometers in the mill base, 3000 rev/mins centrifugal 30 minutes down, no sedimentation.Left standstill 6 months under the room temperature, median size still reaches 108 nanometers.
Embodiment 2:
Get 5% dispersion agent and 0.01% defoamer by weight, be dissolved in the deionized water, add the Pigment red P.R.122 of 35% weight ratio then, in high speed dispersor, disperseed 55 minutes, each component thoroughly is uniformly dispersed, cross 200 eye mesh screens at last, the particle that elimination is excessive gets Preblend; In the container of infusion pump input stirring at low speed, solution enters thus in the horizontal sand mill of repacking and carries out circular grinding, grinds 7 hours, filters the back and collects lapping liquid, encapsulates and namely gets water nano mill base product with Preblend.Laser particle analyzer records that the fineness of granules of pigments reaches 98 nanometers in the mill base, 3000 rev/mins centrifugal 30 minutes down, no sedimentation.Left standstill 6 months under the room temperature, median size still reaches 102 nanometers.
Embodiment 3:
Get 10% dispersion agent and 0.04% defoamer by weight, be dissolved in the deionized water, add the Pigment Yellow 73 P.Y.74 of 50% weight ratio then, in high speed dispersor, disperseed 30 minutes, each component thoroughly is uniformly dispersed, cross 200 eye mesh screens at last, the particle that elimination is excessive gets Preblend; In the container of infusion pump input stirring at low speed, solution enters thus in the horizontal sand mill of repacking and carries out circular grinding, grinds 7.5 hours, filters the back and collects lapping liquid, encapsulates and namely gets water nano mill base product with Preblend.Laser particle analyzer records that the fineness of granules of pigments reaches 110 nanometers in the mill base, 3000 rev/mins centrifugal 30 minutes down, no sedimentation.Left standstill 6 months under the room temperature, median size still reaches 115 nanometers.
Embodiment 4:
Get 15% dispersion agent and 0.05% defoamer by weight, be dissolved in the deionized water, add the pigment violet P.V.19 of 45% weight ratio then, in high speed dispersor, disperseed 60 minutes, each component thoroughly is uniformly dispersed, cross 200 eye mesh screens at last, the particle that elimination is excessive gets Preblend; In the container of infusion pump input stirring at low speed, solution enters thus in the horizontal sand mill of repacking and carries out circular grinding, grinds 8 hours, filters the back and collects lapping liquid, encapsulates and namely gets water nano mill base product with Preblend.Laser particle analyzer records that the fineness of granules of pigments reaches 90 nanometers in the mill base, 3000 rev/mins centrifugal 30 minutes down, no sedimentation.Left standstill 6 months under the room temperature, median size still reaches 91 nanometers.
Embodiment 5:
Get 18% dispersion agent and 0.08% defoamer by weight, be dissolved in the deionized water, add the phthalocyanine blue P.B.15 of 42% weight ratio then: 3, in high speed dispersor, disperseed 55 minutes, each component thoroughly is uniformly dispersed, cross 200 eye mesh screens at last, the particle that elimination is excessive gets Preblend; In the container of infusion pump input stirring at low speed, solution enters thus in the horizontal sand mill of repacking and carries out circular grinding, grinds 6.5 hours, filters the back and collects lapping liquid, encapsulates and namely gets water nano mill base product with Preblend.Laser particle analyzer records that the fineness of granules of pigments reaches 107 nanometers in the mill base, 3000 rev/mins centrifugal 30 minutes down, no sedimentation.Left standstill 6 months under the room temperature, median size still reaches 110 nanometers.
Above-mentioned example only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalent transformations that spirit is done according to the present invention or modification all should be encompassed within protection scope of the present invention.
Claims (6)
1. water nano mill base, it is characterized in that: this mill base is made up of pigment, water, dispersion agent and auxiliary agent, and the weight percent of each component is as follows:
Its total amount satisfies 100%.
2. water nano mill base according to claim 1, it is characterized in that described dispersion agent is polyacrylic acid and polyoxyethylated multipolymer, this multipolymer is radial copolymer, has a polyacrylic acid chain and three polyoxyethylene chains, and the weight-average molecular weight of this multipolymer is 5 * 10
3～2 * 10
4
3. water nano mill base according to claim 1 is characterized in that described pigment is one or more in carbon black or the pigment dyestuff commonly used.
4. water nano mill base according to claim 1 is characterized in that the auxiliary agent of described auxiliary agent for adding according to the concrete purposes of mill base, as defoamer, sanitas etc.
5. water nano mill base according to claim 1 is characterized in that described water nano mill base can be used for the preparation of products such as high-grade paint, ink for ink-jet printer, digital ink-jet printed equipment usefulness ink and pigment photoresistor agent.
6. the preparation method of a water nano mill base as claimed in claim 1, it is characterized in that concrete steps are as follows: get 5%～40% dispersion agent and 0～5% auxiliary agent in proportion, be dissolved in the deionized water, the pigment that adds 5%～80% weight ratio then, in high speed dispersor, disperseed 10～60 minutes, each component thoroughly is uniformly dispersed, cross 200 eye mesh screens at last, the particle that elimination is excessive gets Preblend; Preblend is imported in the container of stirring at low speed through infusion pump, solution enters thus in the horizontal sand mill of repacking and carries out circular grinding, grinds 2～8 hours, makes the fineness of granules of pigments reach 80～120 nanometers, filter the back and collect lapping liquid, encapsulation namely gets water nano mill base product.
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| CN2012100033379A CN103194123A (en) | 2012-01-06 | 2012-01-06 | Aqueous nano-paste and preparation method thereof |
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Cited By (9)
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|---|---|---|---|---|
| CN105368160A (en) * | 2015-12-23 | 2016-03-02 | 河北科技大学 | Water-based carbon black color paste dispersing agent and application thereof to preparation of carbon black color paste |
| CN105400297A (en) * | 2015-12-25 | 2016-03-16 | 上海金狮化工有限公司 | Color paste and preparation method thereof |
| CN107384029A (en) * | 2017-07-11 | 2017-11-24 | 河北晨阳工贸集团有限公司 | A kind of water nano mill base and preparation method thereof |
| CN107556826A (en) * | 2017-09-25 | 2018-01-09 | 浙江纳美新材料股份有限公司 | A kind of preparation method of environment-friendly nano water-based mill base |
| CN108103808A (en) * | 2017-11-30 | 2018-06-01 | 安徽宏远无纺布业有限公司 | It is a kind of for dyestuff of non-woven fabrics and preparation method thereof |
| CN110540776A (en) * | 2019-10-12 | 2019-12-06 | 深圳市墨库图文技术有限公司 | Dispersion liquid applied to digital printing pigment |
| CN110982003A (en) * | 2019-12-20 | 2020-04-10 | 常熟世名化工科技有限公司 | Preparation method of star polymer dispersant, product and application thereof |
| CN113047066A (en) * | 2021-03-18 | 2021-06-29 | 常州喜莱维纺织科技有限公司 | Ink-jet printing fabric and preparation method thereof |
| CN117089242A (en) * | 2023-10-19 | 2023-11-21 | 琥崧科技集团股份有限公司 | Preparation method of ink and ink |
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| CN102037084A (en) * | 2008-08-16 | 2011-04-27 | 科莱恩金融(Bvi)有限公司 | Dry pigment preparations comprising non-ionic additives |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105368160A (en) * | 2015-12-23 | 2016-03-02 | 河北科技大学 | Water-based carbon black color paste dispersing agent and application thereof to preparation of carbon black color paste |
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| CN105400297B (en) * | 2015-12-25 | 2018-06-26 | 上海金狮化工有限公司 | A kind of mill base and preparation method thereof |
| CN105400297A (en) * | 2015-12-25 | 2016-03-16 | 上海金狮化工有限公司 | Color paste and preparation method thereof |
| CN107384029A (en) * | 2017-07-11 | 2017-11-24 | 河北晨阳工贸集团有限公司 | A kind of water nano mill base and preparation method thereof |
| CN107556826A (en) * | 2017-09-25 | 2018-01-09 | 浙江纳美新材料股份有限公司 | A kind of preparation method of environment-friendly nano water-based mill base |
| CN107556826B (en) * | 2017-09-25 | 2020-12-25 | 浙江纳美新材料股份有限公司 | Preparation method of nano water-based ink-jet color paste |
| CN108103808A (en) * | 2017-11-30 | 2018-06-01 | 安徽宏远无纺布业有限公司 | It is a kind of for dyestuff of non-woven fabrics and preparation method thereof |
| CN110540776A (en) * | 2019-10-12 | 2019-12-06 | 深圳市墨库图文技术有限公司 | Dispersion liquid applied to digital printing pigment |
| CN110982003A (en) * | 2019-12-20 | 2020-04-10 | 常熟世名化工科技有限公司 | Preparation method of star polymer dispersant, product and application thereof |
| CN113047066A (en) * | 2021-03-18 | 2021-06-29 | 常州喜莱维纺织科技有限公司 | Ink-jet printing fabric and preparation method thereof |
| CN117089242A (en) * | 2023-10-19 | 2023-11-21 | 琥崧科技集团股份有限公司 | Preparation method of ink and ink |
| CN117089242B (en) * | 2023-10-19 | 2024-01-02 | 琥崧科技集团股份有限公司 | Preparation method of ink and ink |
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Application publication date: 20130710 |