CN105821706B - A kind of curtain coating dope viscosity modifier and its preparation technology - Google Patents
A kind of curtain coating dope viscosity modifier and its preparation technology Download PDFInfo
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- CN105821706B CN105821706B CN201510580412.1A CN201510580412A CN105821706B CN 105821706 B CN105821706 B CN 105821706B CN 201510580412 A CN201510580412 A CN 201510580412A CN 105821706 B CN105821706 B CN 105821706B
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Abstract
The present invention relates to a kind of curtain coating dope viscosity modifier and its preparation technology, at least including following component, the mass fraction proportion scope of each component and component is respectively：Polyvinyl acetate emulsion 60 ~ 70, polyethylene glycol 5 ~ 10, superpolymer polyethylene imines 10 ~ 15, silicone coupling agents 1 ~ 5, emulsifying agent 5 ~ 15, blocked isocyanate 2 ~ 15.The innovation that the present invention passes through technique and formula, improve the rheological property of emulsion, during so that emulsion being coated with for curtain-type, there is provided coating excellent mobility and ductility, so as to form the coating of the curtain and high speed of stabilization, by the application of technique, the coverage and surface property of paper are substantially increased, so as to improve the cost performance of product.
Description
Technical field
The present invention relates to a kind of curtain coating coating, specifically a kind of curtain coating dope viscosity modifier and its preparation
Technique.
Background technology
Traditional paper coating technique, mostly contact, coating is applied over coating by the metering of scraper or scraper
The surface of paper, but due to the contact for having physics and the bottleneck of coating rheological property, so as to limit the speed of paper machine and corresponding
Coating paper performance, the curtain opened up in recent years is coating technique, can make the coating layer of multilayer in the same time, as curtain
Curtain is the same under conditions of physical contact, is applied in the surface of paper, largely overcomes mechanical contact coating, is brought
Rate limitation, while improve performance.But at the same time for the emulsion for this coating method, it is proposed that new requirement.
The formula of existing curtain-type coating, it is necessary to common emulsion and the various auxiliary agents of surfactant agent of correlation,
Situ configuration, while the rheological property of correlation can not fully meet, the demand of the curtain-type coating of high speed.
The content of the invention
For above-mentioned situation, the present invention provides a kind of curtain coating dope viscosity modifier and its preparation technology, by work
The innovation of skill and formula, improves the rheological property of emulsion so that when emulsion is coated with for curtain-type, there is provided the excellent stream of coating
Dynamic property and ductility, so as to form the coating of the curtain and high speed of stabilization, by the application of technique, substantially increase paper
Coverage and surface property, so as to improve the cost performance of product.
To achieve these goals, technical scheme is as follows：
A kind of curtain coating dope viscosity modifier, at least including following component, the quality parts ratio of each component and component
Weight scope is respectively：Polyvinyl acetate emulsion 60 ~ 70, polyethylene glycol 5 ~ 10, superpolymer polyethylene imines 10 ~ 15, siloxanes idol
Connection agent 1 ~ 5, emulsifying agent 5 ~ 15, blocked isocyanate 2 ~ 15.
A kind of preparation technology of curtain coating dope viscosity modifier, comprises the following steps：
Step one：Polyvinyl acetate emulsion is first added in a kettle., stirs and sequentially add superpolymer polyethylene imines,
Polyethylene glycol and silicone coupling agents.
Step 2：Reactor temperature is slowly warmed up to 60 degree, 30 minutes are incubated at a temperature of.
Step 3：Emulsifying agent is added in reactor and is stirred 10 minutes, blocked isocyanate is finally added, after addition
After stirring 10 minutes, fully reaction, room temperature preservation.
A kind of application method of curtain coating dope viscosity modifier, comprises the following steps：
Step one：Preparation formula according to viscosity improver prepares curtain coating dope viscosity modifier, and by water, carbonic acid
The curtain coating dope viscosity modifier that calcium, china clay, starch, carboxymethylcellulose calcium, water repellent agent and dispersant are prepared, and
High-speed stirred ensures sufficiently mixing.
Step 2：And add the correlation of appropriate alkali and water, subsequent control compound to be contained in 45% or so admittedly, and adjust pH
9 ~ 10,400 ~ 700cps of viscosity is made curtain coating coating.
Step 3：Curtain coating coating squeezes into feeding groove, by curtain mode, imposes on the surface of paper, makes curtain coating
Coating is uniformly covered in the paper surface of high speed, and without holiday, curtain when falling, due to the table of curtain coating coating
The optimization of face tension force so that curtain stabilization does not shake not bifurcated, finally on the surface of paper, forms homogeneous coating structure.
It is an advantage of the invention that：By the innovation of technique and formula, the rheological property of emulsion is improved so that emulsion is used for
When curtain-type is coated with, there is provided coating excellent mobility and ductility, so as to form the coating of the curtain and high speed of stabilization, pass through
The application of technique, substantially increases the coverage and surface property of paper, so as to improve the cost performance of product.Its product
Feature first, by introducing compound high polymer system, realizes the effective change for emulsion rheological characteristic, so as to show extension
The change of viscosity, improves the tensile resistance of emulsion, it is adaptable to the coating process of high speed.Second, by emulsifying agent and poly- second two
The introducing of alcohol compound system, optimizes the surface tension performance of emulsion so that after emulsion is used for coating, the stability on surface is more
It is good, the curtain of stabilization is formed, bifurcated, does not shake, good stability.3rd, by introducing coupling agent and isocyanates complex
System, there is provided emulsion Dwelling are aqueous and water-resistance, improves properties of the product in water-based system.
Specific embodiment
Embodiment 1：Polyvinyl acetate emulsion 60, polyethylene glycol 10, superpolymer polyethylene imines 10, silicone coupling agents 3,
Emulsifying agent 12, blocked isocyanate 5.
Embodiment 2：Polyvinyl acetate emulsion 65, polyethylene glycol 5, superpolymer polyethylene imines 10, silicone coupling agents 1,
Emulsifying agent 15, blocked isocyanate 4.
Embodiment 3：Polyvinyl acetate emulsion 67, polyethylene glycol 5, superpolymer polyethylene imines 15, silicone coupling agents 3,
Emulsifying agent 5, blocked isocyanate 5.
Embodiment 4：Polyvinyl acetate emulsion 70, polyethylene glycol 5, superpolymer polyethylene imines 15, silicone coupling agents 3,
Emulsifying agent 5, blocked isocyanate 2.
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 (2)
1. a kind of curtain coating dope viscosity modifier, it is characterised in that at least including following component, the matter of each component and component
Amount number specific gravity range is respectively：Polyvinyl acetate emulsion 60~70, polyethylene glycol 5~10, superpolymer polyethylene imines 10~
15, silicone coupling agents 1~5, emulsifying agent 5~15, blocked isocyanate 2~15.
2. a kind of curtain coating dope viscosity modifier according to claim 1, it is characterised in that its preparation technology includes
Following steps：
Step one：Polyvinyl acetate emulsion is first added in a kettle., stirs and sequentially add superpolymer polyethylene imines, poly- second
Glycol and silicone coupling agents；
Step 2：Reactor temperature is slowly warmed up to 60 degree, 30 minutes are incubated at a temperature of；
Step 3：Emulsifying agent is added in reactor and is stirred 10 minutes, finally add blocked isocyanate, stirred after addition
10 minutes, fully after reaction, room temperature preservation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510580412.1A CN105821706B (en) | 2015-09-14 | 2015-09-14 | A kind of curtain coating dope viscosity modifier and its preparation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510580412.1A CN105821706B (en) | 2015-09-14 | 2015-09-14 | A kind of curtain coating dope viscosity modifier and its preparation technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105821706A CN105821706A (en) | 2016-08-03 |
| CN105821706B true CN105821706B (en) | 2017-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510580412.1A Active CN105821706B (en) | 2015-09-14 | 2015-09-14 | A kind of curtain coating dope viscosity modifier and its preparation technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN105821706B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638142A (en) * | 2016-12-09 | 2017-05-10 | 苏州艾博迈尔新材料有限公司 | Paper surface reinforcing agent and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0715020A1 (en) * | 1994-12-02 | 1996-06-05 | Lefatex Chemie GmbH | Coating agent for paper surfaces |
| CN1315905A (en) * | 1998-07-09 | 2001-10-03 | 格雷斯公司 | Ink-receptive coatings and recording medium prepared therefrom |
| CN101544847A (en) * | 2008-03-28 | 2009-09-30 | 东洋油墨制造株式会社 | Producing process for microfined organic pigment, microfined organic pigment and microfined organic pigment coloring composition |
| CN102230299A (en) * | 2011-04-22 | 2011-11-02 | 金华盛纸业（苏州工业园区）有限公司 | Chemical painting for curtain coating |
-
2015
- 2015-09-14 CN CN201510580412.1A patent/CN105821706B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0715020A1 (en) * | 1994-12-02 | 1996-06-05 | Lefatex Chemie GmbH | Coating agent for paper surfaces |
| CN1315905A (en) * | 1998-07-09 | 2001-10-03 | 格雷斯公司 | Ink-receptive coatings and recording medium prepared therefrom |
| CN101544847A (en) * | 2008-03-28 | 2009-09-30 | 东洋油墨制造株式会社 | Producing process for microfined organic pigment, microfined organic pigment and microfined organic pigment coloring composition |
| CN102230299A (en) * | 2011-04-22 | 2011-11-02 | 金华盛纸业（苏州工业园区）有限公司 | Chemical painting for curtain coating |
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| CN105821706A (en) | 2016-08-03 |
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