CN101869811A - Preparation method of inorganic superfine powder high-concentration solid-liquid suspension by adopting CND hyper-dispersant - Google Patents
Preparation method of inorganic superfine powder high-concentration solid-liquid suspension by adopting CND hyper-dispersant Download PDFInfo
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- CN101869811A CN101869811A CN200910082835A CN200910082835A CN101869811A CN 101869811 A CN101869811 A CN 101869811A CN 200910082835 A CN200910082835 A CN 200910082835A CN 200910082835 A CN200910082835 A CN 200910082835A CN 101869811 A CN101869811 A CN 101869811A
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Abstract
The invention specially relates to a preparation method of an inorganic superfine powder/water medium high-concentration solid-liquid suspension, belonging to the fields of granule technologies, chemical materials and preparation methods. In the preparation method, a steric hindrance repulsion action is formed to realize the stable dispersion of inorganic superfine powder in a water medium by adopting the absorption of a CND hyper-dispersant on the surface of the inorganic superfine powder so that the uniformly and stably dispersed high-concentration solid-liquid suspension is prepared. The invention ensures that the inorganic superfine powder has stable suspension characteristics by uniformly dispersing the inorganic superfine powder into the water medium through the absorbing modification of the CND hyper-dispersant on the surface of the inorganic superfine powder and achieves the weight percentage concentration (the weight percentage of the inorganic superfine powder and the water medium) by 70 percent; in addition, the high-concentration solid-liquid suspension can be stably placed for 6-12 months without obvious laying and sediment and can be applied to the fields of coatings, electronic display materials, and the like.
Description
Technical field
The invention belongs to granule technology, chemical materials and preparation method field, the preparation method of particularly a kind of inorganic superfine powder body/water medium high-concentration solid-liquid suspension.
Background technology
The inorganic superfine powder body is the important powder body material that a class is widely used in industrial circles such as coating, plastics, papermaking and printing ink.
Because the superfine powder granularity is little, surface area is big, the surface can be high, very easily produce spontaneous coalescence, show strong reunion characteristic, reunite especially easily and generate the bigger second particle of particle diameter, thereby the premium properties of inorganic superfine powder body can not be given full play to, seriously restricting extensively and effectively using of inorganic superfine powder body.
Existing more research aspect the superfine powder dispersion, having reported as patent of invention 200310113244.2 (preparation method of antimony pentoxide alcohol dispersion liquid) and to have adopted the tertiary amines material that is formed by different straight chain group, is the preparation method etc. of the antimony pentoxide alcohol dispersion liquid of decentralized medium with ethanol.
Summary of the invention
The objective of the invention is to propose of the absorption of a kind of CND of utilization hyper-dispersant in the inorganic superfine powder surface, form sterically hindered repulsive interaction, realize that the inorganic superfine powder body in aqueous medium middle and high concentration stable dispersion, is prepared into the method for the high concentration solid-liquid suspension of uniform and stable dispersion.
A kind of preparation method who adopts the inorganic superfine powder height concentration solid-liquid suspension of CND hyper-dispersant is characterized in that preparation method's the step of inorganic superfine powder body/water medium high-concentration solid-liquid suspension is as follows:
(1). the inorganic superfine powder body is mixed for 50-70: 30-50 by weight percentage with aqueous medium, add the CND hyper-dispersant of 0.2-10% (to the inorganic superfine powder body), then add again fully to mix behind the auxiliary dispersants of 0.02-1% and disperse.
(2). stirred 5-20 minute the high concentration solid-liquid suspension of (1) preparation is powerful, then ultrasonic dispersions 3-15min makes it further after dispersion, can make the high concentration solid-liquid suspension of inorganic superfine powder body/aqueous medium stable dispersion.
The preparation method of inorganic superfine powder body of the present invention/water medium high-concentration solid-liquid suspension is simple, and the particle diameter of inorganic superfine powder body is less than 1000nm, and when disperseing in aqueous medium, the weight percent concentration of its inorganic superfine powder body and water can reach 70%.The high concentration solid-liquid suspension was placed 6-12 month stable, did not have obvious layering and precipitation.
The specific embodiment
Embodiment 1
(1). with inorganic superfine powder body and aqueous medium is to mix at 50: 50 by weight percentage, adds the CND hyper-dispersant of 0.2-0.5% (to the inorganic superfine powder body), adds fully to mix behind the auxiliary dispersants of 0.05-0.1% and disperse again.
(2). stirred 10 minutes the high concentration solid-liquid suspension of (1) preparation is powerful, then ultrasonic dispersions 10min makes it further after dispersion, can make inorganic superfine powder body/aqueous medium stable high concentrations solid-liquid suspension.
Embodiment 2
(1). with inorganic superfine powder body and aqueous medium is to mix at 60: 40 by weight percentage, adds the CND hyper-dispersant of 0.5-2% (to the inorganic superfine powder body), adds fully to mix behind the auxiliary dispersants of 0.1-0.3% to disperse again.
(2). stirred 15 minutes the high concentration solid-liquid suspension of (1) preparation is powerful, then ultrasonic dispersions 15min makes it further after dispersion, can make inorganic superfine powder body/aqueous medium stable high concentrations solid-liquid suspension.
Embodiment 3
(1). with inorganic superfine powder body and aqueous medium is to mix at 70: 30 by weight percentage, adds the CND hyper-dispersant of 1-6% (to the inorganic superfine powder body) again, adds fully to mix behind the auxiliary dispersants of 0.1-0.5% to disperse again.
(2). stirred 20 minutes the high concentration solid-liquid suspension of (1) preparation is powerful, then ultrasonic dispersions 8min makes it further after dispersion, can make inorganic superfine powder body/aqueous medium stable high concentrations solid-liquid suspension.
Embodiment 4
(1). with inorganic superfine powder body and aqueous medium is to mix at 55: 45 by weight percentage, adds the CND hyper-dispersant of 0.5-4% (to the inorganic superfine powder body) again, adds fully to mix behind the auxiliary dispersants of 0.02-0.05% to disperse again.
(2). stirred 10 minutes the high concentration solid-liquid suspension of (1) preparation is powerful, then ultrasonic dispersions 5min makes it further after dispersion, can make inorganic superfine powder body/aqueous medium stable high concentrations solid-liquid suspension.
Embodiment 5
(1). with inorganic superfine powder body and aqueous medium is to mix at 65: 35 by weight percentage, adds the CND hyper-dispersant of 1-8% (to the inorganic superfine powder body) again, adds fully to mix behind the auxiliary dispersants of 0.05-0.3% to disperse again.
(2). stirred 20 minutes the high concentration solid-liquid suspension of (1) preparation is powerful, then ultrasonic dispersions 5min makes it further after dispersion, can make inorganic superfine powder body/aqueous medium stable high concentrations solid-liquid suspension.
Embodiment 6
(1). with inorganic superfine powder body and aqueous medium is to mix at 70: 30 by weight percentage, adds the CND hyper-dispersant of 4-10% (to the inorganic superfine powder body) again, adds fully to mix behind the auxiliary dispersants of 0.2-0.5% to disperse again.
(2). stirred 15 minutes the high concentration solid-liquid suspension of (1) preparation is powerful, then ultrasonic dispersions 10min makes it further after dispersion, can make inorganic superfine powder body/aqueous medium stable high concentrations solid-liquid suspension.
Embodiment 7
(1). with inorganic superfine powder body and aqueous medium is to mix at 60: 40 by weight percentage, adds the CND hyper-dispersant of 0.5-5% (to the inorganic superfine powder body) again, adds fully to mix behind the auxiliary dispersants of 0.08-0.3% to disperse again.
(2). stirred 10 minutes the high concentration solid-liquid suspension of (1) preparation is powerful, then ultrasonic dispersions 8min makes it further after dispersion, can make inorganic superfine powder body/aqueous medium stable high concentrations solid-liquid suspension.
Claims (7)
1. the preparation method of inorganic superfine powder body/water medium high-concentration solid-liquid suspension, it is characterized in that: the high concentration solid-liquid suspension, described decentralized medium is an aqueous medium, described inorganic superfine powder body is inorganic superfine powder bodies such as calcium carbonate, kaolin, titanium dioxide, silica, metal oxide, carbon black, and its particle diameter is less than 1000nm.Utilize of the absorption of CND hyper-dispersant, form sterically hindered repulsive interaction, realize inorganic superfine powder body stable dispersion in aqueous medium, be prepared into the high concentration solid-liquid suspension of uniform and stable dispersion in the inorganic superfine powder surface.
2. the preparation method of inorganic superfine powder body as claimed in claim 1/water medium high-concentration solid-liquid suspension is characterized in that adopting preparation method's the step of inorganic superfine powder height concentration solid-liquid suspension of CND hyper-dispersant as follows:
(1). the inorganic superfine powder body is mixed for 50-70: 30-50 by weight percentage with aqueous medium, add the CND hyper-dispersant of 0.5-10% (to the inorganic superfine powder body), then add again fully to mix behind the auxiliary dispersants of 0.02-0.5% and disperse.
(2). stirred 10-20 minute the high concentration solid-liquid suspension of (1) preparation is powerful, then ultrasonic dispersions 3-15min makes it further after dispersion, can make the high concentration solid-liquid suspension of inorganic superfine powder body/aqueous medium stable dispersion.
3. the preparation method of the inorganic superfine powder height concentration solid-liquid suspension of employing CND hyper-dispersant as claimed in claim 1, it is characterized in that described inorganic superfine powder body is calcium carbonate, kaolin, titanium dioxide, silica, metal oxide, carbon black etc., its particle diameter is less than 1000nm.
4. the preparation method of the inorganic superfine powder height concentration solid-liquid suspension of employing CND hyper-dispersant as claimed in claim 1, the weight percent concentration that it is characterized in that described high concentration solid-liquid suspension can reach 70%, and its weight percent concentration is meant the percentage of inorganic superfine powder body and the ratio of the weight of water.
5. the preparation method of the inorganic superfine powder height concentration solid-liquid suspension of employing CND hyper-dispersant as claimed in claim 1 or 2 is characterized in that described CND hyper-dispersant is a naphthalenesulfonate copolymerization hyper-dispersant.As CND-1, CND-2, CND-426 etc.
6. the preparation method of the inorganic superfine powder height concentration solid-liquid suspension of employing CND hyper-dispersant as claimed in claim 1 or 2 is characterized in that described CND hyper-dispersant is the anionic polymer dispersant.
7. the preparation method of the inorganic superfine powder height concentration solid-liquid suspension of employing CND hyper-dispersant as claimed in claim 1 or 2 is characterized in that described auxiliary dispersants is cellulose family, lignin and starch etc. such as carboxymethyl cellulose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910082835A CN101869811A (en) | 2009-04-23 | 2009-04-23 | Preparation method of inorganic superfine powder high-concentration solid-liquid suspension by adopting CND hyper-dispersant |
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| CN200910082835A CN101869811A (en) | 2009-04-23 | 2009-04-23 | Preparation method of inorganic superfine powder high-concentration solid-liquid suspension by adopting CND hyper-dispersant |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301763A (en) * | 2013-06-28 | 2013-09-18 | 中国地质大学（武汉） | Method for dispersing nano calcium carbonate powder material in aqueous solution |
| CN105992806A (en) * | 2013-12-06 | 2016-10-05 | 贝克休斯公司 | Dispersing fines in hydrocarbon applications using artificial lift |
| CN112154553A (en) * | 2018-06-20 | 2020-12-29 | 日本瑞翁株式会社 | Method for producing slurry for secondary battery functional layer |
-
2009
- 2009-04-23 CN CN200910082835A patent/CN101869811A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301763A (en) * | 2013-06-28 | 2013-09-18 | 中国地质大学（武汉） | Method for dispersing nano calcium carbonate powder material in aqueous solution |
| CN105992806A (en) * | 2013-12-06 | 2016-10-05 | 贝克休斯公司 | Dispersing fines in hydrocarbon applications using artificial lift |
| CN105992806B (en) * | 2013-12-06 | 2019-08-13 | 贝克休斯公司 | Disperse fine powder in hydrocarbon application using artificial lift |
| US10604714B2 (en) | 2013-12-06 | 2020-03-31 | Baker Hughes, A Ge Company, Llc | Dispersing fines in hydrocarbon applications using artificial lift |
| CN112154553A (en) * | 2018-06-20 | 2020-12-29 | 日本瑞翁株式会社 | Method for producing slurry for secondary battery functional layer |
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Application publication date: 20101027 |