CN105821705B - A kind of talcum powder dispersant and its preparation technology - Google Patents
A kind of talcum powder dispersant and its preparation technology Download PDFInfo
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- CN105821705B CN105821705B CN201510580413.6A CN201510580413A CN105821705B CN 105821705 B CN105821705 B CN 105821705B CN 201510580413 A CN201510580413 A CN 201510580413A CN 105821705 B CN105821705 B CN 105821705B
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- talcum powder
- styrene
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- butadiene emulsion
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Abstract
The present invention relates to talcum powder dispersant and its preparation technology, at least including following component, the mass fraction proportion scope of each component and component is respectively：Styrene-butadiene emulsion A30 ~ 60, styrene-butadiene emulsion B30 ~ 70, nonionic emulsifier 0.1 ~ 0.5, dispersant 0.1 ~ 0.5, silicone coupling agents 1 ~ 3, defoamer 0.05.The present invention passes through optimize technique, formula, dispersion, by the innovation and the combination of talcum powder common distribution innovative technology of extraordinary emulsion, the effective applicability for improving talcum powder in coating for paper, obtained talcum powder dispersion viscosity is low, good stability, rheological characteristic improves, so as to improve application of the talcum powder in coating for paper formula, the characteristic of talcum powder has been given play to, the final performance of paper has been improved.
Description
Technical field
The present invention relates to the paint field of paper, specifically a kind of talcum powder dispersant and its preparation technology.
Background technology
China's talcum rich reserves, it is fine quality, world's first is ranked, it is one of talcum producing country maximum in the world.
China's talcum resource is distributed mainly on Liaoning, Shandong, Guangxi San great Sheng.Talcum powder with its excellent heat-resisting, lubrication, antiacid alkali,
Insulation etc. characteristic and be widely used in the industries such as coating, papermaking, military project, ceramics, plastics.The 50% of China's talcum powder yield with
It is upper to be used for paper-making industry.It is mainly used in papermaking filler, resin sorbent, papermaking coating pigment is used on a small quantity.
Talcum powder is hydrated magnesium silicate, and its Theoretical molecular formula is 3MgO4SiO2H2O.It has layer structure, is divided into
Three layers, centre is an octahedral MgO layer, and tetrahedral silica layer is up and down；Two-OH bases of talcum powder inside,
Therefore, its surface has hydrophobicity.This is that talcum powder has the reason for being different from other pigment special natures.Talcum powder is due to it
Hydrophobicity, is difficult to soak and disperses when coating is prepared, and the coating being made also is in shear ultimate strength, so being used in causing coating
It is extremely difficult, while limit having given play to the due characteristic of talcum powder.
Existing talcum powder dispersion technology, generally disperses talcum powder by adding wetting agent and dispersant, but usual
To the solid content of talcum powder dispersion liquid there was only 50% or so, while being easy to be layered and precipitating, cause using difficulty, while making
The slurries configured with this talcum powder occur the problem of Gel-coating film spraying, cause coating in the case of high speed shear, show
Stagflation, so as to influence the operating of coating machine and follow-up paper performance.
The content of the invention
For above-mentioned situation, the present invention provides a kind of talcum powder dispersant and its preparation technology, by optimize technique, matches somebody with somebody
Side, dispersion, by the innovation and the combination of talcum powder common distribution innovative technology of extraordinary emulsion, effectively improves talcum powder
Applicability in coating for paper, obtained talcum powder dispersion viscosity is low, good stability, and rheological characteristic improves, so as to improve
Application of the talcum powder in coating for paper formula, has given play to the characteristic of talcum powder, improves the final performance of paper.
To achieve these goals, technical scheme is as follows：
A kind of talcum powder dispersant, at least including following component, the mass fraction proportion scope difference of each component and component
For：Styrene-butadiene emulsion A30~60, styrene-butadiene emulsion B30~70, nonionic emulsifier 0.1~0.5, dispersant 0.1~0.5, siloxanes
Coupling agent 1~3, defoamer 0.05.
The styrene-butadiene emulsion A is the styrene-butadiene emulsion of 150 nanometers~300 nanometers of particle diameter.
The styrene-butadiene emulsion B is the styrene-butadiene emulsion of 400 nanometers of particle diameter.
The nonionic emulsifier is APEO.
The dispersant is Sodium Polyacrylate.
The defoamer is APEO.
A kind of preparation technology of talcum powder dispersant, it is characterised in that comprise the following steps：
Step one：Being separately added into styrene-butadiene emulsion A and styrene-butadiene emulsion B in a kettle., and start stirring ensures good mixing
Close.
Step 2：Emulsifying agent is gradually added, and is warmed up to 70~90 degree, addition silicone coupling agents, 40 points of reaction time
Clock
Step 3：Intermediate product obtained in step 2 is added into dispersant, defoamer is added after being sufficiently mixed, add pH value
Conditioning agent, adjusts pH to 7~8, is progressively cooled to room temperature and preserves.
The pH value conditioning agent is NaOH or ammoniacal liquor.
A kind of application method of talcum powder dispersant, in preparation vessel, adds talcum powder dispersion emulsion, and gentle agitation,
Quantitative talcum powder is gradually added during stirring, talcum powder is uniformly dispersed in emulsion, after addition is finished, at a high speed
Dispersion 30 minutes, adds pH value conditioning agent, and adjustment pH value and adds water to 7~8, adjust the solid content of dispersion liquid to 65~
75%, the viscosity of control system is in below 500cps.
The present invention is adjusted using the special purpose latex mixed by styrene-butadiene emulsion A and styrene-butadiene emulsion B by effective technique
It is whole, multinomial dispersion is introduced, wider particle diameter distribution is formed, while optimizing existing stabilising system, introduce new breast
Agent and dispersant, reduce the surface tension of emulsion, improve the compatibility of emulsion.During talcum powder is scattered, with emulsion
Used as carrier, by multinomial dispersion, the emulsion ion of small particle and many particle diameter distributions in emulsion is adsorbed in talcum powder
Surface, the surface of effective lubrication platy talc forms the system of stabilization, while the stable emulsion system of optimization, effectively
Reduction talcum powder surface tension, improve system hydrophily.
Introducing and the dispersion of innovation emulsion dispersion medium by effective special type emulsion, the slurry of the talcum powder of gained
Admittedly containing being far above common 50%, up to 70%, simultaneity factor stabilization is not precipitated, not stratified, the viscosity of slurries liquid for 24 hours
Low, the rheological characteristic of the coating for paper of subsequent configuration is good.
It is an advantage of the invention that：Usual emulsion is monodisperse system, and uniform particle diameter, surface tension is higher, and wettability is poor,
And the present invention changes original monodisperse system by introducing the emulsion of different-grain diameter, multinomial emulsion system is formed, improve
The mobility and blending property of emulsion.Simultaneously by effective emulsification and dispersing technology, the surface tension of emulsion is significantly reduced, improved
Compatibility, improves the compatibility to talcum powder.Dispersion talcum powder generally adopts water as decentralized medium, and the present invention is extraordinary by introducing
Emulsion, so as to change the stability of system, improves application performance as the decentralized medium of talcum powder.
Specific embodiment
Embodiment 1：The styrene-butadiene emulsion A48.45 of 150 nanometers of particle diameter, the styrene-butadiene emulsion B50 of 400 nanometers of particle diameter, nonionic Emulsion
Agent APEO 0.3, dispersant Sodium Polyacrylate 0.2, silicone coupling agents 1, defoamer APEO 0.05.
Embodiment 2：The styrene-butadiene emulsion A49.15 of 150 nanometers of particle diameter, the nanometer butadiene-styrene-vinyl emulsion B48 of particle diameter 400, non-ionic emulsifier
Agent OP-10,0.5, dispersant sodium hexametaphosphate 0.3, silicone coupling agents 2, defoamer APEO 0.05.
Embodiment 3：The styrene-butadiene emulsion A37.05 of 300 nanometers of particle diameter, the styrene-butadiene emulsion B60 of 400 nanometers of particle diameter, nonionic Emulsion
Agent APEO 0.5, dispersant sodium hexametaphosphate 0.4, silicone coupling agents 2, defoamer APEO 0.05.
Embodiment 4：The styrene-butadiene emulsion A30 of 300 nanometers of particle diameter, the styrene-butadiene emulsion 66.15 that 400 nanometers of particle diameter, nonionic Emulsion
Change APEO 0.5, dispersant Sodium Polyacrylate 0.3, silicone coupling agents 3, defoamer APEO 0.05.
General principle of the invention, principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, the simply present invention described in above-described embodiment and specification
Principle, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these change and
Improvement is both fallen within the range of claimed invention.The protection domain of application claims by appending claims and its
Equivalent is defined.
Claims (3)
1. a kind of talcum powder dispersant, at least including following component, the mass fraction proportion scope of each component and component is respectively：
Styrene-butadiene emulsion A30~60, styrene-butadiene emulsion B30~70, nonionic emulsifier 0.1~0.5, dispersant 0.1~0.5, siloxanes idol
Connection agent 1~3, defoamer 0.05, the styrene-butadiene emulsion A is the styrene-butadiene emulsion of 150 nanometers~300 nanometers of particle diameter, the butylbenzene breast
Liquid B is the styrene-butadiene emulsion of 400 nanometers of particle diameter, and the nonionic emulsifier is APEO, and the dispersant is polyacrylic acid
Sodium, the defoamer is APEO.
2. a kind of talcum powder dispersant according to claim 1, it is characterised in that its preparation technology is comprised the following steps：
Step one：Being separately added into styrene-butadiene emulsion A and styrene-butadiene emulsion B in a kettle., and start stirring ensures good mixing；
Step 2：Emulsifying agent is gradually added, and is warmed up to 70~90 degree, addition silicone coupling agents, 40 minutes reaction time；
Step 3：Intermediate product obtained in step 2 is added into dispersant, defoamer is added after being sufficiently mixed, add pH value regulation
Agent, adjusts pH to 7~8, is progressively cooled to room temperature and preserves.
3. a kind of talcum powder dispersant according to claim 2, it is characterised in that the pH value conditioning agent be NaOH or
Ammoniacal liquor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510580413.6A CN105821705B (en) | 2015-09-14 | 2015-09-14 | A kind of talcum powder dispersant and its preparation technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510580413.6A CN105821705B (en) | 2015-09-14 | 2015-09-14 | A kind of talcum powder dispersant and its preparation technology |
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| Publication Number | Publication Date |
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| CN105821705A CN105821705A (en) | 2016-08-03 |
| CN105821705B true CN105821705B (en) | 2017-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510580413.6A Active CN105821705B (en) | 2015-09-14 | 2015-09-14 | A kind of talcum powder dispersant and its preparation technology |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105951333A (en) * | 2016-07-26 | 2016-09-21 | 苏州科润织造有限公司 | Double-hanging-basket type fiber dyeing device with rotating motors |
| CN106835828B (en) * | 2016-12-25 | 2018-06-01 | 安徽鑫雅包装制品有限公司 | A kind of preparation method of low viscosity high dispersive type papermaking talcum powder |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02253836A (en) * | 1989-03-28 | 1990-10-12 | Kanzaki Paper Mfg Co Ltd | Dispersant and dispersion solution of powder |
| CN1695781A (en) * | 2004-05-11 | 2005-11-16 | 三洋化成工业株式会社 | Pigment dispersion agent |
| CN101238251A (en) * | 2005-08-04 | 2008-08-06 | 阿加多·皮拉·阿方索 | Composed paper |
| CN101808618B (en) * | 2007-09-26 | 2013-03-20 | 陶氏康宁公司 | Personal care compositions containing hydrophobic silicone-organic gel blends |
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