CN103388281B - Modified filler and preparation method thereof, applies the slurry of this modified filler - Google Patents
Modified filler and preparation method thereof, applies the slurry of this modified filler Download PDFInfo
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Abstract
The present invention provides the modified filler that a kind of field of papermaking uses, a kind of modified filler, it contains filler host, this filler host is kieselguhr, zeolite, bentonite, Talcum, calcium carbonate, Kaolin, Juanyingshi, natural calcium metasilicate, Gypsum Fibrosum, barite, one or more in pyrophyllite, this modified filler is possibly together with carboxymethyl cellulose, charging neutrality agent and flocculant, the quality of this carboxymethyl cellulose is the 0.5%-1% of filler host absolute dry mass, the quality of this charging neutrality agent is the 0.2%-0.4% of filler host absolute dry mass, the addition of this flocculant is the poly-shape filler of wadding making modified filler wadding be polymerized to as particle diameter is 20-80 μm, described flocculant is the one in amphiprotic polyacrylamide and amphoteric starch.The preparation method that the present invention also provides for a kind of modified filler, and apply the slurry of this modified filler.Modified filler of the present invention is applied in slurry, and the paper manufactured paper with pulp has good performance, and can save cost.
Description
Technical field
The present invention relates to modified filler of a kind of field of papermaking use and preparation method thereof, and apply the slurry of this modified filler.
Background technology
In paper industry, add inorganic filler and can not only be obviously improved the whiteness of paper of manufacturing paper with pulp, opacity and smoothness in slurry, moreover it is possible to improve slurry and manufacture paper with pulp the water filtering performance in process at paper machine, reduce paper thermal energy consumption in dry run.Additionally inorganic filler is compared to pulp fiber not only low price, and has less carbon emission amount.But, owing to the adhesion between filler and pulp fiber is weak, the interpolation of filler can cause the decline of paper strength.
At present, domestic and international papermaking enterprise etc. are all competitively studying the high-filling technology of filler.Cell lumen loading technology such as North America, its principle is: passed into by carbon dioxide in the slurry containing saturated aqua calcis, carbon dioxide and calcium hydroxide molecule can pass through the cinclides of fiber and enter lumen, make the water-fast precipitation of calcium carbonate of generation to fibrocyte intracavity.But this technology need to be invested substantial amounts of equipment and be carried out, and the filler that really can be deposited in lumen is less.Domestic enterprise carries out the research of starch parcel packing technique, but a large amount of uses of starch can make paper become fragile, and shows as paper tear and declines.
Summary of the invention
In view of this, it is necessary to the modified filler of a kind of effective solution the problems referred to above is provided.
It addition, there is a need to the preparation method providing a kind of above-mentioned modified filler.
It addition, there is a need to provide a kind of slurry applying above-mentioned modified filler.
A kind of modified filler, it contains filler host, this filler host is kieselguhr, zeolite, bentonite, Talcum, calcium carbonate, Kaolin, Juanyingshi, natural calcium metasilicate, Gypsum Fibrosum, barite, one or more in pyrophyllite, this modified filler is possibly together with carboxymethyl cellulose, charging neutrality agent and flocculant, the quality of this carboxymethyl cellulose is the 0.5%-1% of filler host absolute dry mass, the quality of this charging neutrality agent is the 0.2%-0.4% of filler host absolute dry mass, the addition of this flocculant is the poly-shape filler of wadding making modified filler wadding be polymerized to as particle diameter is 20-80 μm, described flocculant is the one in amphiprotic polyacrylamide and amphoteric starch.
A kind of slurry applying described modified filler, the absolute dry mass of this modified filler is the 4%-30% of slurry absolute dry mass.
The preparation method of a kind of modified filler, it comprises the steps:
Taking filler host to add water and be configured to filler suspension, this filler host is one or more in kieselguhr, zeolite, bentonite, Talcum, calcium carbonate, Kaolin, Juanyingshi, natural calcium metasilicate, Gypsum Fibrosum, barite, pyrophyllite；
The carboxymethyl cellulose of the 0.5%-1% that absolute dry mass is filler host absolute dry mass mix homogeneously is added in filler suspension；
The charging neutrality agent of the 0.2%-0.4% that quality is filler host absolute dry mass is added in filler suspension；
Adding flocculant in filler suspension, make the poly-prepared described modified filler of described filler wadding, the addition of this flocculant is the poly-shape filler of wadding making modified filler wadding be polymerized to as particle diameter is 20-80 μm.
Modified filler of the present invention uses carboxymethyl cellulose to mix with filler host, and add the negative charge of the charging neutrality agent above-mentioned mixed fillers of neutralization, the flocculant finally using macromolecular chain makes filler wadding poly-, this modified filler is made an addition in paper making pulp, can effectively reduce papermaking cost, it is lifted at the reservation during paper machine is manufactured paper with pulp and drainage, improve paper machine water system cleannes, and modified filler specific surface area reduces, add interfibrous adhesion, the high molecular crane span structure effect in top layer enhances the adhesion of modified filler and fiber, therefore the intensity of paper can be obviously improved.
Detailed description of the invention
A kind of modified filler, it includes filler host, carboxymethyl cellulose, charging neutrality agent, flocculant and water.The quality of this carboxymethyl cellulose is the 0.5%-1% of filler host absolute dry mass.The quality of this charging neutrality agent is the 0.2%-0.4% of filler host absolute dry mass.
This filler host is one or more in kieselguhr, zeolite, bentonite, Talcum, calcium carbonate, Kaolin, Juanyingshi, natural calcium metasilicate, Gypsum Fibrosum, barite, pyrophyllite.
The defect that paper strength that this carboxymethyl cellulose causes in order to make up filler is low, promotes paper strength.
This flocculant is the one in amphiprotic polyacrylamide, polyamide-epoxy chloropropane resin, amphoteric starch, cationic starch.This flocculant, in order to filler to be wrapped up, adheres to, makes filler form the poly-shape filler of wadding, so that the abrasion of filler significantly reduce.The flocculant of Different adding amount, the particle diameter that modified filler wadding can be made poly-is different, and the preferably addition of flocculant of the present invention is the poly-shape filler of wadding making modified filler wadding be polymerized to as grain diameter is 20-80 μm.The suitably increase of packing material size can reduce the specific surface area of its filler, thus increasing interfibrous adhesion, but packing material size is excessive, local bond strength being caused too low, thus affecting paper quality, therefore should control packing material size.The control of grain diameter can use HORIBA (model: LA-300) detector detect particle diameter in wadding collecting process and control herein.
The poly-increase that can cause packing material size of filler wadding, and the suitably increase of particle diameter can reduce the specific surface area of filler, thus increasing and interfibrous adhesion.Modified filler Surface mulch in the present invention or be stained with polymer substance, this material is also easy to and fiber combines, and thereby serves to crane span structure effect and improves the adhesion of filler and fiber, lifting paper strength.
After mixing due to carboxymethyl cellulose and filler host, the electric charge negativity of filler is higher, the too high performance affecting flocculant effect of electronegativity, causes that filler is not susceptible to wadding poly-.Can effectively neutralize the negative charge of modified filler by adding charging neutrality agent, even increase the positive charge amount of modified filler.
This charging neutrality agent is the inorganic or Organic substance that positive charge density is higher, concretely aluminium polychlorid (PolyaluminiumChloride, PAC) or PEI (poly-ethylene imines), and is preferably PAC.
A kind of slurry applying described modified filler, this cost of sizing agent is cheap, paper strength height of manufacturing paper with pulp.Modified filler can be directly added in slurry to carry out joining copying, the addition of modified filler can according to actual condition of manufacturing paper with pulp, consumption such as wet end furnish, reinforcing aids is determined, if slurry quality is better, then control higher modified filler addition, such as absolute dry mass is slurry absolute dry mass about the 30% of the modified filler of addition；If slurry quality is poor, then can reduce the addition of modified filler, control the 4%-10% that absolute dry mass is slurry absolute dry mass of the modified filler added.Entirety, the absolute dry mass of the modified filler of addition is the 4%-30% of slurry absolute dry mass.
Modified filler of the present invention uses carboxymethyl cellulose to mix with filler host, and add the negative charge of the charging neutrality agent above-mentioned mixed fillers of neutralization, the flocculant finally using macromolecular chain makes filler wadding poly-, this modified filler is made an addition in paper making pulp, can effectively reduce papermaking cost, it is lifted at the reservation during paper machine is manufactured paper with pulp and drainage, improve paper machine water system cleannes, and modified filler specific surface area reduces, add interfibrous adhesion, the high molecular crane span structure effect in top layer enhances the adhesion of modified filler and fiber, therefore the intensity of paper can be obviously improved.
The preparation method of this modified filler, it comprises the steps:
(1) configuration filler suspension.
Take a certain amount of filler host to add water and be configured to the filler suspension that mass percentage concentration is 15%-60%.This filler host is one or more in kieselguhr, zeolite, bentonite, Talcum, calcium carbonate, Kaolin, Juanyingshi, natural calcium metasilicate, Gypsum Fibrosum, barite, pyrophyllite.
(2) carboxymethyl cellulose is added.
The carboxymethyl cellulose of the 0.5%-1% that absolute dry mass is filler host absolute dry mass mix homogeneously is added in above-mentioned filler suspension.This carboxymethyl cellulose preferably adds in the way of solution.
(3) charging neutrality agent is added.
The charging neutrality agent of the 0.2%-0.4% that quality is filler host absolute dry mass mix homogeneously is added in above-mentioned filler suspension.Preferably in 300-1000 turn/stirring of min under add described charging neutrality agent.This charging neutrality agent is the inorganic or Organic substance that positive charge density is higher, concretely PAC or PEI.
(4) flocculant is added.
In above-mentioned filler suspension, add flocculant, make described filler wadding be polymerized to as the poly-shape filler of wadding that particle diameter is 20 μm-80 μm, mix homogeneously, prepared described modified filler.This flocculant is the one in amphiprotic polyacrylamide, polyamide-epoxy chloropropane resin, amphoteric starch, cationic starch.This flocculant preferably adds in the way of solution.
Come by the examples below the present invention is specifically described.
Embodiment 1
Prepare modified filler: take the scattered suspension grinding GCC containing 100g over dry, the mass percentage concentration of this suspension is 18%, add the cmc soln 50g that mass percentage concentration is 1%, it is sufficiently stirred for so as to be uniformly dispersed, under stirring, it is added thereto to 0.2gPAC again, after stirring 10min, adds the amphiprotic polyacrylamide solution 10g that mass percentage concentration is 0.5%, stirring 20min, the particle diameter preparing modified filler is 35-40 μm.
Prepare slurry: taking needlebush bleached kraft pulp (freedom is 380ml), leaf wood bleached kraft pulp (freedom is 400ml) and APMP (freedom is 250ml) and carry out mixing prepared mixed slurry in the ratio of 20%:60%:20%, the mass percentage concentration of mixed slurry is 1%.Take 2000g mixed slurry, above-mentioned modified filler 39.5g is added under stirring, behind 10 seconds, interval, add the PAMC retention agent 5g that mass percentage concentration is 0.1%, behind 10 seconds, interval, add the silicon dioxde solution 5g that mass percentage concentration is 1%, after stirring 10 seconds, carry out drainage detection and handsheet and detect the intensity of handsheet.
Embodiment 2
Prepare modified filler: take the scattered suspension grinding GCC containing 100g over dry, the mass percentage concentration of this suspension is 18%, add the cmc soln 100g that mass percentage concentration is 1%, it is sufficiently stirred for so as to be uniformly dispersed, under stirring, it is added thereto to 0.4gPAC again, after stirring 10min, adds the polyamide-epoxy chloropropane resin solution 5g that mass percentage concentration is 10%, stirring 20min, the particle diameter preparing modified filler is 20-25 μm.
Preparing slurry: prepare with reference to the method in embodiment 1, the quality wherein adding the modified filler obtained by embodiment 2 is 39.7g.
Embodiment 3
Prepare modified filler: take the scattered suspension grinding GCC containing 100g over dry, the mass percentage concentration of this suspension is 18%, add the cmc soln 75g that mass percentage concentration is 1%, it is sufficiently stirred for so as to be uniformly dispersed, under stirring, it is added thereto to 0.3gPAC again, after stirring 10min, adds the semi-curing amphiprotic starch solution 66.7g that mass percentage concentration is 3%, stirring 20min, the particle diameter preparing modified filler is 70-80 μm.
Preparing slurry: prepare with reference to the method in embodiment 1, the quality wherein adding the modified filler obtained by embodiment 3 is 42g.
Comparative example
Prepare slurry: taking needlebush bleached kraft pulp (freedom is 380ml), leaf wood bleached kraft pulp (freedom is 400ml) and APMP (freedom is 250ml) and mix in the ratio of 20%:60%:20%, the mass percentage concentration of mixed slurry is 1%.Take 2000g mixed slurry, filler GCC33.3g is added under stirring, behind 10 seconds, interval, add the PAMC retention agent 5g that mass percentage concentration is 0.1%, behind 10 seconds, interval, add the silicon dioxde solution 5g that mass percentage concentration is 1%, after stirring 10 seconds, carrying out drainage detection and handsheet and detect the intensity of handsheet, concrete test result is as shown in the table.
| Project | Comparative example | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Cohesiveness kg cm | 1.56 | 2.08 | 2.04 | 2.11 |
| Burst index kPa m2/g | 2.2 | 2.5 | 2.8 | 2.7 |
| Tear index mN m2/g | 6.8 | 7.4 | 7.2 | 7.3 |
| Tensile index N m/g | 38.5 | 42.8 | 45.9 | 48.3 |
| 10s drainage ml | 360 | 365 | 365 | 370 |
| Ash % | 16.1 | 16.2 | 16.0 | 16.2 |
As seen from table: compared to conventional fillers (comparative example), make an addition to, with the modified filler obtained by embodiment 1,2 and 3, the paper manufactured paper with pulp in slurry and there is better mechanical property, higher intensity.
It addition, those skilled in the art also can make various amendments, interpolation and replacement in other form and details in the claims in the present invention scope of disclosure and spirit.Certainly, these various amendments, interpolation and replacements etc. made according to present invention spirit change, and all should be included within present invention scope required for protection.
Claims (4)
1. a preparation method for modified filler, it comprises the steps:
Taking filler host to add water and be configured to filler suspension, this filler host is one or more in kieselguhr, zeolite, bentonite, Talcum, calcium carbonate, Kaolin, Juanyingshi, natural calcium metasilicate, Gypsum Fibrosum, barite, pyrophyllite；
The carboxymethyl cellulose of the 0.5%-1% that absolute dry mass is filler host absolute dry mass mix homogeneously is added in filler suspension；
The charging neutrality agent of the 0.2%-0.4% that quality is filler host absolute dry mass is added in filler suspension；
Adding flocculant in filler suspension, make the poly-prepared described modified filler of described filler wadding, the addition of this flocculant is the poly-shape filler of wadding making modified filler wadding be polymerized to as particle diameter is 20-80 μm.
2. the preparation method of modified filler as claimed in claim 1, it is characterised in that: in the step of preparation filler suspension, the mass percentage concentration of filler suspension is 15%-60%.
3. the preparation method of modified filler as claimed in claim 1, it is characterised in that: this charging neutrality agent is aluminium polychlorid or poly-ethylene imines.
4. the preparation method of modified filler as claimed in claim 1, it is characterised in that: this flocculant is the one in amphiprotic polyacrylamide, polyamide-epoxy chloropropane resin, amphoteric starch, cationic starch.
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| CN201210140704.XA CN103388281B (en) | 2012-05-08 | 2012-05-08 | Modified filler and preparation method thereof, applies the slurry of this modified filler |
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| CN201210140704.XA CN103388281B (en) | 2012-05-08 | 2012-05-08 | Modified filler and preparation method thereof, applies the slurry of this modified filler |
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| CN103388281A CN103388281A (en) | 2013-11-13 |
| CN103388281B true CN103388281B (en) | 2016-06-29 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986513B (en) * | 2015-02-06 | 2017-10-27 | 石轩 | A kind of functional filler auxiliary agent for field of papermaking |
| CN106149459A (en) * | 2015-03-31 | 2016-11-23 | 上海东升新材料有限公司 | A kind of paper grade (stock) height retains filler and preparation method thereof |
| CN105602289A (en) * | 2016-02-24 | 2016-05-25 | 湖南磊鑫新材料科技有限公司 | Modified heavy calcium carbonate special for paint and preparation method and device thereof |
| CN106120441B (en) * | 2016-06-20 | 2018-09-18 | 广州聚注通用技术研究院有限公司 | A kind of modified calcium silicates papermaking filler and preparation method thereof |
| CN109577076A (en) * | 2018-12-26 | 2019-04-05 | 江苏理文造纸有限公司 | A kind of filler and preparation method thereof for liner board |
| CN109667193A (en) * | 2019-01-28 | 2019-04-23 | 常州麒通国际贸易有限公司 | A kind of preparation method of composite papermaking retention agent |
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| US4272297A (en) * | 1978-01-18 | 1981-06-09 | Blue Circle Industries Limited | Compositions for use with papermaking fillers |
| CN1516769A (en) * | 2001-04-24 | 2004-07-28 | M-��ʵ��˾ | Filler and process for production thereof |
| CN101743356A (en) * | 2007-07-16 | 2010-06-16 | 阿克佐诺贝尔股份有限公司 | Filler composition |
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