CN105239455B - A kind of paper grade (stock) talc dispersions and preparation method thereof - Google Patents
A kind of paper grade (stock) talc dispersions and preparation method thereof Download PDFInfo
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- CN105239455B CN105239455B CN201510727659.1A CN201510727659A CN105239455B CN 105239455 B CN105239455 B CN 105239455B CN 201510727659 A CN201510727659 A CN 201510727659A CN 105239455 B CN105239455 B CN 105239455B
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Abstract
The invention discloses a kind of talc dispersions of paper grade (stock), including 0.6~0.8 part of dispersant, 60~70 parts of calcium carbonate and 30~40 parts of talcum powder and 9~12 parts of water, the granule content that calcium carbonate particle diameter is less than or equal to 2um is 63%~67%, a kind of paper grade (stock) talc dispersions of the present invention, solid content is 70%~75%, viscosity is 80~250cps, the granule content that particle diameter is less than or equal to 2um in dispersion is 60%~65%, with good mobility and coating, it is adaptable to prepare pigment supply Large Paper Machine continous way production.
Description
Technical field
The present invention relates to pulp technology for making paper, more particularly to a kind of paper grade (stock) talc dispersions and preparation method thereof.
Background technology
Talcum powder is hydrated magnesium silicate, and its Theoretical molecular formula is 3MgO4SiO2·H2O.It has layer structure, is divided into
Three layers, centre is an octahedral MgO layer, is tetrahedral silica layer up and down；Two-OH bases of talcum powder inside,
Therefore, its surface has hydrophobicity.But because talcum powder can improve coating paper whiteness, opacity, smoothness and print gloss
Degree, assigns paper higher absorbency.Talcum powder is widely used in gravure LWC paper as dispensing and coating is free of mechanical wood-pulp paper
In, due to talc particles have hydrophobicity with it is collapsibility, when they are contacted with water, if talc particles surface does not increase timely
Wet, talc particles easily produce wadding and gathered, because the rheology related to flatness is limited, at present, coating talc dispersions
It can only achieve 65% solid content.
The content of the invention
The invention provides a kind of talc dispersions of paper grade (stock), it is low to solve talc dispersions solid content, viscosity
High the problem of.
On the one hand, the invention provides a kind of talc dispersions of paper grade (stock), including 0.6~0.8 part of dispersant, 60~
70 parts of calcium carbonate and 30~40 parts of talcum powder and 9~12 parts of water, the calcium carbonate particle diameter be less than or equal to 2um granule content be
63%~67%.
Preferably, dispersant is Sodium Polyacrylate.
Preferably, dispersant solid content is 40%~50%, the solid content of calcium carbonate is 73%~77%, and talcum powder is consolidated
Content is 87%~97%.
On the other hand, a kind of preparation method of paper grade (stock) talc dispersions, including grinding calcium carbonate, sieving obtains 63%
~67% grain diameter is less than or equal to 2um calcium carbonate；9~12 parts of water are added in container, after sequentially add 0.6~
0.8 part of dispersant, 60~70 parts of calcium carbonate and 30~40 parts of talcum powder are stirred mixing, and dispersion is made.
A kind of paper grade (stock) talc dispersions that the present invention is provided, solid content be 70%~75%, viscosity be 80~
The granule content that particle diameter is less than or equal to 2um in 250cps, dispersion is 60%~65%.
A kind of preparation method of paper grade (stock) talc dispersions provided by the present invention, mainly improves scattered flow,
First grinding calcium carbonate, it is rear mutually to be soaked with talcum powder using grinding calcium carbonate, and coordinate dispersant (polyacrylic acid sodium salt), adjust
Optimum formula ratio, prepares the dispersion with high-solid-content and low-viscosity.The talc dispersions of the present invention have good
Mobility and coating, it is adaptable to pigment supply Large Paper Machine continous way production is prepared, with relatively broad application value.
Embodiment
The present invention is described in further detail below by embodiment.
A kind of talc dispersions of paper grade (stock), the talcum powder of high-solid lower-viscosity degree very high to its solid content and viscosity requirement
Dispersion has good mobility and coating, it is adaptable to prepare dispensing supply Large Paper Machine continous way production.
Embodiment one：
A kind of preparation method of the talc dispersions of paper grade (stock), comprises the following steps：
Carbonic acid Calcium preconditioning：Grinding, the grain diameter for crossing 325 mesh sieves acquisition 63% is less than or equal to 2um calcium carbonate.
12g water is added in 150ml plastic beaker, the dispersant that 0.6g solid contents are 40% is added, using low
Fast mixer is stirred with 200rpm, and the grinding calcium carbonate that 60g solid contents are 73%, stirring are then added while stirring
2min, is finally slowly added to the talcum powder that 40g solid contents are 87%, and the stir about 30min in addition is finally mixed to prepare papermaking
Use talc dispersions.
Embodiment two：
A kind of preparation method of the talc dispersions of paper grade (stock), comprises the following steps：
Carbonic acid Calcium preconditioning：Grinding, crosses calcium carbonate of the grain diameter less than or equal to 2um that 325 mesh sieves obtain 65%.
9.6g water is added in 150ml plastic beaker, the dispersant that 0.7g solid contents are 45% is added, using low
Fast mixer is stirred with 200rpm, and the grinding calcium carbonate that 65g solid contents are 75%, stirring are then added while stirring
2min, is finally slowly added to the talcum powder that 35g solid contents are 90%, and the stir about 30min in addition is finally mixed to prepare papermaking
Use talc dispersions.
Embodiment three：
A kind of preparation method of the talc dispersions of paper grade (stock), comprises the following steps：
Carbonic acid Calcium preconditioning：Grinding, crosses calcium carbonate of the grain diameter less than or equal to 2um that 325 mesh sieves obtain 67%.
10.4g water is added in 150ml plastic beaker, the dispersant that 0.8g solid contents are 50% is added, uses
Low-speed mixer is stirred with 300rpm, and the grinding calcium carbonate that 70g solid contents are 77% is then added while stirring, is stirred
2min is mixed, the talcum powder that 30g solid contents are 90% is finally slowly added to, the stir about 30min in addition is finally mixed to prepare and made
Paper talc dispersions.
Comparative example：
123.6g water is added in 300ml plastic beaker, the dispersant that 2.4g solid contents are 50% is added, uses
Low-speed mixer is stirred with 200rpm, and the calcium carbonate dry powder that 120g solid contents are 99.98% is then added while stirring, is done
The grain diameter of powder 30% stirs 2min in below 2um, is finally slowly added the talcum powder that 88g solid contents are 90%, side addition
Side stir about 30min, adds and is transferred in laboratory mill plus 300g mill pearl grinding 40min acquisition paper grade (stock) talc dispersions, with
The increase of milling time, particle diameter is tapered into, but the requirement of art paper coating can not be reached.
Performance test：
Testing example one to three is distinguished under comparable conditions, and paper grade (stock) talc dispersions consolidates obtained by comparative example
The granule content of particle diameter≤2 μm is tested in content, viscosity and dispersion, as a result such as table 1.
Table 1
As shown in table 1, formula of a kind of paper grade (stock) talc dispersions of the invention and preparation method thereof, preparation it is scattered
Body solid content be 70%~75%, viscosity be 80~205cps, with SetiGraph particle instruments detect dispersion in particle diameter be less than or
Granule content equal to 2um is 60%~65%.
Using a kind of paper grade (stock) talc dispersions provided by the present invention, scattered flow is mainly improved, is first ground
Calcium carbonate, it is rear mutually to be soaked with talcum powder using grinding calcium carbonate, and coordinate dispersant (polyacrylic acid sodium salt), adjustment is most preferably matched somebody with somebody
Square ratio, prepares the dispersion with high-solid-content and low-viscosity.The talc dispersions of the present invention have good mobility
And coating, it is adaptable to coating dispensing supply Large Paper Machine continous way production is prepared, with relatively broad application value.
Above content is to combine specific embodiment further description made for the present invention, it is impossible to assert this hair
Bright specific implementation is confined to these explanations.For general technical staff of the technical field of the invention, do not taking off
On the premise of from present inventive concept, some simple deduction or replace can also be made.
Claims (3)
1. a kind of paper grade (stock) talc dispersions, it is characterised in that：Including 0.6~0.8 part of dispersant, 60~65 parts of calcium carbonate and
35~40 parts of talcum powder and 9~12 parts of water, the granule content that the calcium carbonate particle diameter is less than or equal to 2um are 63%~67%；
The dispersant is Sodium Polyacrylate；
The preparation method of described talc dispersions, including grinding calcium carbonate, sieving obtain that particle diameter is less than or equal to 2um
The calcium carbonate that grain content is 63%~67%；In container add 9~12 parts of water, after sequentially add 0.6~0.8 part of dispersant,
60~65 parts of calcium carbonate and 35~40 parts of talcum powder are stirred mixing, and dispersion is made.
2. a kind of paper grade (stock) talc dispersions according to claim 1, it is characterised in that：The dispersant solid content is
40%~50%, the solid content of calcium carbonate is 73%~77%, and the solid content of talcum powder is 87%~97%.
3. a kind of paper grade (stock) talc dispersions according to claim 1, it is characterised in that：The mixing speed is 200
~300rpm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510727659.1A CN105239455B (en) | 2015-10-30 | 2015-10-30 | A kind of paper grade (stock) talc dispersions and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510727659.1A CN105239455B (en) | 2015-10-30 | 2015-10-30 | A kind of paper grade (stock) talc dispersions and preparation method thereof |
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| Publication Number | Publication Date |
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| CN105239455A CN105239455A (en) | 2016-01-13 |
| CN105239455B true CN105239455B (en) | 2017-10-17 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106702813B (en) * | 2016-12-09 | 2018-08-24 | 海南金海浆纸业有限公司 | A kind of burhished enamel paper of coating, the preparation method and applications coating |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277051A (en) * | 2010-06-09 | 2011-12-14 | 上海申得欧有限公司 | TiO2 visible light internal wall emulsion paint without volatile organic compounds (VOC) and preparation method thereof |
| CN102321997A (en) * | 2011-09-16 | 2012-01-18 | 金华盛纸业（苏州工业园区）有限公司 | Copperplate board coating |
| CN103590282A (en) * | 2012-08-14 | 2014-02-19 | 金东纸业（江苏）股份有限公司 | Coating and coating used coated paper |
| CN104404821A (en) * | 2014-10-24 | 2015-03-11 | 金东纸业（江苏）股份有限公司 | Preparation method for pigment slurry, paint and coated paper |
| CN104452441A (en) * | 2014-10-28 | 2015-03-25 | 金东纸业（江苏）股份有限公司 | Coating as well as preparation method and coated paper thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2871474B1 (en) * | 2004-06-11 | 2006-09-15 | Omya Development Ag | NEW DRY MINERAL PIGMENT CONTAINING CALCIUM CARBONATE, AQUEOUS SUSPENSION CONTAINING IT AND USES THEREOF |
-
2015
- 2015-10-30 CN CN201510727659.1A patent/CN105239455B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277051A (en) * | 2010-06-09 | 2011-12-14 | 上海申得欧有限公司 | TiO2 visible light internal wall emulsion paint without volatile organic compounds (VOC) and preparation method thereof |
| CN102321997A (en) * | 2011-09-16 | 2012-01-18 | 金华盛纸业（苏州工业园区）有限公司 | Copperplate board coating |
| CN103590282A (en) * | 2012-08-14 | 2014-02-19 | 金东纸业（江苏）股份有限公司 | Coating and coating used coated paper |
| CN104404821A (en) * | 2014-10-24 | 2015-03-11 | 金东纸业（江苏）股份有限公司 | Preparation method for pigment slurry, paint and coated paper |
| CN104452441A (en) * | 2014-10-28 | 2015-03-25 | 金东纸业（江苏）股份有限公司 | Coating as well as preparation method and coated paper thereof |
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