CN103790071B - A kind of hectorite and polyvinylpyrrolidone work in coordination with stable ASA sizing agent emulsion - Google Patents
A kind of hectorite and polyvinylpyrrolidone work in coordination with stable ASA sizing agent emulsion Download PDFInfo
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- CN103790071B CN103790071B CN201310715155.9A CN201310715155A CN103790071B CN 103790071 B CN103790071 B CN 103790071B CN 201310715155 A CN201310715155 A CN 201310715155A CN 103790071 B CN103790071 B CN 103790071B
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Abstract
The present invention relates to a kind of hectorite and polyvinylpyrrolidone works in coordination with stable ASA sizing agent emulsion, belong to glue used in paper-making emulsifying technology field.Polyvinylpyrrolidone wherein on the one hand, the faint wadding that can cause hectorite gathers, thus the hydrophily of hectorite particle is reduced, the compatibility of ASA is improved, impel hectorite to be adsorbed in ASA-water termination, around ASA oil droplet, form more continuous print membrana granulosa; On the other hand, polyvinylpyrrolidone can directly be adsorbed in ASA-water termination, is wrapped in hectorite stratum granulosum and ASA oil droplets forms stable mechanical barrier, thus effectively prevents ASA from oozing out from integument, prevents the hydrolysis of ASA; And this mechanical barrier can be combined closely with water, the gathering between ASA droplet effectively can be prevented.Therefore, the stability that hectorite of the present invention and polyvinylpyrrolidone work in coordination with stable ASA sizing agent is significantly increased.
Description
Technical field
The present invention relates to a kind of hectorite and polyvinylpyrrolidone works in coordination with stable ASA sizing agent emulsion, belong to glue used in paper-making emulsifying technology field.
Background technology
ASA is alkenylsuccinicanhydride(alkenyl succinic anhydride) abbreviation, usually obtained by addition reaction by isomerized longer chain internal olefins and maleic anhydride, neutral and alkali reactive sizing agent conventional in paper industry, for improving the WATER RESISTANCE of paper and paperboard.Under normal temperature, ASA is oily liquids, water insoluble, and must be prepared into emulsion oil-in-water by emulsification could apply in paper manufacturing systems.But as acid anhydrides, ASA is very easily hydrolyzed, its hydrolysate not only reduces the sizing efficiency of ASA, also reacts with the metal ion such as calcium, magnesium, forms gummy deposits, has a strong impact on the operating characteristics of paper machine.Therefore, ASA is generally before introducing paper manufacturing systems, carries out on-the-spot emulsification in workshop.At present, ASA many employings cationic starch and a small amount of anionic dispersing agents emulsification ASA in industry, cationic starch not only addition is large, could use, make the emulsifying process of ASA rather complicated after also needing gelatinization.In addition, surfactant-based dispersant usually reduces the sizability of paper.Utilize synthetic polymer (as cationic polyacrylamide, polymine, polydiene hydroxypropyltrimonium chloride and polyvinylamine etc.) and other natural polysaccharides and derivative (as CATION and amphoteric guar gum) thereof although substitute cationic starch can exempt gelatinization and process for cooling, but still exist emulsifier large, need synthesis and preparation emulsifier special and the deficiency such as prepared alkenyl succinic anhydride emulsion valid density is low.
Except surfactant, solid particle is Absorbable organic halogens ASA emulsion also.Chinese patent CN101333789 discloses a kind of montmorillonite and combines stable ASA emulsion with hydrotalcite, and this emulsion not only completely avoid the adverse effect of surfactant to ASA applying glue, and ASA effective content is higher.Chinese patent CN101574834 discloses a kind of method utilizing montmorillonite/shitosan/ammoniacal liquor to stablize ASA emulsion, and gained emulsion droplet diameter is little, sizing efficiency is higher, but the ASA in emulsion is hydrolyzed serious, and the short time places sizing efficiency i.e. serious reduction.Chinese patent CN102493273A discloses a kind of polyaluminium sulfate and combines stable ASA emulsion with hectorite, this ASA emulsion has good hydrolytic stability and sizing efficiency, but polyaluminium sulfate needs on-the-spot synthesis, make the in situ preparation technology of ASA emulsion still comparatively complicated.In addition, prior art also discloses the method adopting n-butylamine, alanine, urea, melamine, quaternary ammonium salt-modified hectorite to stablize ASA sizing agent emulsion, the hectorite of these small molecule-modified dose of modification can effectively improve ASA emulsion intercalation method, as cyanurotriamide modified hectorite, quaternary ammonium salt-modified hectorite can make ASA emulsion separate out without aqueous phase after 24 hours in placement; But the stable ASA emulsion sizability of n-butylamine, alanine and quaternary ammonium salt-modified hectorite, with the prolongation of standing time, still has and comparatively significantly reduces, emulsion is separated out because hydrolysis has aqueous phase after 36 hours in placement; And urea as micromolecular acid amides to hectorite modification time, there is the deficiency that addition is large.So, how under suitable emulsion stabilizer addition, to improve ASA emulsion intercalation method and sizing efficiency further, still need to continue research.
Summary of the invention
The object of the present invention is to provide that a kind of emulsibility is good, ASA sizing agent emulsion that stability and sizing efficiency improve further.
Find in research process, although polyvinylpyrrolidonemolecules molecules amount is higher, do not belong to small molecule amine, but its macromolecule and nonionic characteristic make it be easy to be adsorbed in ASA-water termination and only produce faint aggtegation to hectorite, thus act synergistically with hectorite and can significantly improve the stability of ASA sizing agent emulsion, ASA sizing agent emulsion is placed after 72 hours and is separated out without aqueous phase or oil phase; Not only sizing efficiency is high, and the sizing efficiency placed after 1h does not have significant change.
technical scheme of the present invention is:
Hectorite and polyvinylpyrrolidone work in coordination with a stable ASA sizing agent emulsion, and its preparation method is:
First, hectorite and polyvinylpyrrolidone are disperseed with soluble in water respectively, form hectorite colloidal sol and polyvinylpyrrolidonesolution solution;
Then, hectorite colloidal sol and polyvinylpyrrolidonesolution solution mix, as aqueous phase, using ASA as oil phase;
Finally, under agitation aqueous phase is mixed with oil phase, through the shearing peptizaiton of certain hour, prepare stable oil-in-water type ASA emulsion, i.e. ASA emulsion sizing agent;
The mass ratio general control of ASA and water is between 1:2 ~ 10;
The mass ratio general control of hectorite and ASA is between 1:25 ~ 100;
The mass ratio general control of polyvinylpyrrolidone and ASA between 1:200 ~ 1000,
Shear rate general control at 4000 ~ 10000 revs/min, 2 ~ 5 minutes time.
ASA involved in the present invention is the various alkenyl succinic anhydride industrial products for paper-making sizing without emulsification existed in liquid form under normal temperature, is generally hexadecylene base succinyl oxide, octadecenyl succinic anhydride or both mixtures.The mass ratio of ASA and water preferably controls between 1:3 ~ 4.
Hectorite involved in the present invention has another name called lithium soap soil, and be a kind of synthesis Magnesosilicate product, ideal structure formula is Na
0.7[(Si
8mg
5.5li
0.3) O
20(OH)
4], have discoid grain structure, particle surface is with permanent negative electrical charge, and disk diameter is about 20 ~ 30nm, and thickness is about 1nm.The mass ratio of hectorite and ASA preferably controls between 1:50.
Polyvinylpyrrolidonemolecules molecules formula involved in the present invention is (C
6h
9nO) n is a kind of water-soluble polymer of nonionic, and relative molecular weight is 4 ~ 160,000.As the Synergistic stabilizer of ASA emulsion, the mass ratio of polyvinylpyrrolidone and ASA preferably controls at 1:500.
In the preparation scheme of ASA emulsion sizing agent involved in the present invention, by mixing of aqueous phase and oil phase, but be both under agitation added in oil phase by aqueous phase, may also be and be under agitation added in aqueous phase by oil phase, preferred scheme is under agitation added in oil phase by aqueous phase.
In the preparation scheme of ASA emulsion sizing agent involved in the present invention, described mechanical shearing effect can be provided by any stirring and shearing equipment, shear agitation speed general control at 4000 ~ 10000 revs/min, mixing time 2 ~ 5 minutes.
ASA emulsion sizing agent of the present invention, polyvinylpyrrolidone wherein on the one hand, the faint wadding that can cause hectorite gathers, thus the hydrophily of hectorite particle is reduced, the compatibility of ASA is improved, impel hectorite to be adsorbed in ASA-water termination, around ASA oil droplet, form more continuous print membrana granulosa; On the other hand, polyvinylpyrrolidone can directly be adsorbed in ASA-water termination, is wrapped in hectorite stratum granulosum and ASA oil droplets forms stable mechanical barrier, thus effectively prevents ASA from oozing out from integument, also prevents the hydrolysis of ASA; And this mechanical barrier can be combined closely with water, the gathering between ASA droplet effectively can be prevented.Therefore, compared with the ASA sizing agent that other small molecule amine modification hectorites are stable, the stability that hectorite of the present invention and polyvinylpyrrolidone work in coordination with stable ASA sizing agent is significantly increased; Even if place 72 hours, also there will not be the precipitation of aqueous phase or oil phase.
In addition, the present invention also possesses not to be needed to add any surfactant, prepared Alkenyl succinic anhydride emulsion sizing agent not facile hydrolysis, and sizing efficiency is high, the advantage that stabilizing agent dosage is few.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described, do not form any limitation of the invention.Except as otherwise indicating, the described number in embodiment all by weight.
Comparative example 1
1 part of hectorite powder is dispersed in 200 parts of deionized waters gradually under constantly stirring, after it is fully swelling, forms hectorite aqueous dispersions; Getting 0.025 part of alanine is dissolved in 50 parts of deionized waters; Above-mentioned hectorite aqueous dispersions is mixed with alanine solution, forms aqueous phase.Get in 25 parts of ASA as oil phase.The aqueous phase of above-mentioned preparation is under agitation added in oil phase, utilize emulsify at a high speed shearing equipment stirring and emulsifying 5 minutes under the rotating speed of 4000 revs/min, obtained oil-in-water type ASA emulsion, in emulsion, the mass percent of ASA is about 9.1%, and emulsion has aqueous phase or oil phase to separate out after placing 36 hours.
Get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, after defiberizing machine is discongested, adds 1 part of Al
2(SO
4)
318H
2o, mix and blend 1 minute, add the ASA emulsion sizing agent of the above-mentioned preparation of 1.1 share, stir 2 minutes under the speed of 750 revs/min, add 0.01 part of cationic polyacrylamide, after mixing with paper stock, stirring is continued 1 minute under 1500 revs/min of rotating speeds, under 750 revs/min of rotating speeds stir, add 0.3 part of hectorite afterwards, continue stirring after 1 minute, utilize quick kayser method sheet forming apparatus to copy formulation and measure about 60g/m
2handsheet, and through 105 DEG C of dryings after 10 minutes, utilizing Liquid Penetrant method (GB/T5405-2002) to record handsheet degree of sizing is 62s.
After emulsion places 0.5 hour, again get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, and applying glue under operating condition similar to the above, copy paper handsheet, the degree of sizing recorded is 35s.
Comparative example 2
1 part of hectorite powder is dispersed in 200 parts of deionized waters gradually under constantly stirring, after it is fully swelling, forms hectorite aqueous dispersions; Getting 0.025 part of urea is dissolved in 50 parts of deionized waters; Above-mentioned hectorite aqueous dispersions is mixed with urea liquid, forms aqueous phase.Get in 25 parts of ASA as oil phase.The aqueous phase of above-mentioned preparation is under agitation added in oil phase, utilize emulsify at a high speed shearing equipment stirring and emulsifying 5 minutes under the rotating speed of 4000 revs/min, obtained oil-in-water type ASA emulsion, in emulsion, the mass percent of ASA is about 9.1%, and emulsion has aqueous phase or oil phase to separate out after placing 36 hours.
Get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, after defiberizing machine is discongested, adds 1 part of Al
2(SO
4)
318H
2o, mix and blend 1 minute, add the ASA emulsion sizing agent of the above-mentioned preparation of 1.1 share, stir 2 minutes under the speed of 750 revs/min, add 0.01 part of cationic polyacrylamide, after mixing with paper stock, stirring is continued 1 minute under 1500 revs/min of rotating speeds, under 750 revs/min of rotating speeds stir, add 0.3 part of hectorite afterwards, continue stirring after 1 minute, utilize quick kayser method sheet forming apparatus to copy formulation and measure about 60g/m
2handsheet, and through 105 DEG C of dryings after 10 minutes, utilizing Liquid Penetrant method (GB/T5405-2002) to record handsheet degree of sizing is 74s.
After emulsion places 0.5 hour, again get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, and applying glue under operating condition similar to the above, copy paper handsheet, the degree of sizing recorded is 42s.
Embodiment 1
1 part of hectorite powder is dispersed in 200 parts of deionized waters gradually under constantly stirring, after it is fully swelling, forms hectorite aqueous dispersions; Getting the polyvinylpyrrolidone that 0.025 part of molecular weight is about 160,000 is dissolved in 50 parts of deionized waters; Above-mentioned hectorite aqueous dispersions is mixed with polyvinylpyrrolidonesolution solution, forms aqueous phase.Get in 25 parts of ASA as oil phase.The aqueous phase of above-mentioned preparation is under agitation added in oil phase, utilize emulsify at a high speed shearing equipment stirring and emulsifying 5 minutes under the rotating speed of 4000 revs/min, obtained oil-in-water type ASA emulsion, in emulsion, the mass percent of ASA is about 9.1%, and emulsion is placed after 72 hours and separated out without aqueous phase or oil phase.
Get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, after defiberizing machine is discongested, adds 1 part of Al
2(SO
4)
318H
2o, mix and blend 1 minute, add the ASA emulsion sizing agent of the above-mentioned preparation of 1.1 share, stir 2 minutes under the speed of 750 revs/min, add 0.01 part of cationic polyacrylamide, after mixing with paper stock, stirring is continued 1 minute under 1500 revs/min of rotating speeds, under 750 revs/min of rotating speeds stir, add 0.3 part of hectorite afterwards, continue stirring after 1 minute, utilize quick kayser method sheet forming apparatus to copy formulation and measure about 60g/m
2handsheet, and through 105 DEG C of dryings after 10 minutes, utilizing Liquid Penetrant method (GB/T5405-2002) to record handsheet degree of sizing is 58s.
After emulsion places 1 hour, again get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, and applying glue under operating condition similar to the above, copy paper handsheet, the degree of sizing recorded is 57s.
Embodiment 2
0.5 part of hectorite powder is dispersed in 100 parts of deionized waters gradually under constantly stirring, after it is fully swelling, forms hectorite aqueous dispersions; Getting the polyvinylpyrrolidone that 0.05 part of molecular weight is about 160,000 is dissolved in 25 parts of deionized waters; Above-mentioned hectorite aqueous dispersions is mixed with polyvinylpyrrolidonesolution solution, forms aqueous phase.Get in 25 parts of ASA as oil phase.The aqueous phase of above-mentioned preparation is under agitation added in oil phase, utilize emulsify at a high speed shearing equipment stirring and emulsifying 4 minutes under the rotating speed of 6000 revs/min, obtained oil-in-water type ASA emulsion, in emulsion, the mass percent of ASA is about 16.7%, and emulsion is placed after 72 hours and separated out without aqueous phase or oil phase.
Get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, after defiberizing machine is discongested, adds 1 part of Al
2(SO
4)
318H
2o, mix and blend 1 minute, add the ASA emulsion sizing agent of the above-mentioned preparation of 0.6 share, stir 2 minutes under the speed of 750 revs/min, add 0.01 part of cationic polyacrylamide, after mixing with paper stock, stirring is continued 1 minute under 1500 revs/min of rotating speeds, under 750 revs/min of rotating speeds stir, add 0.3 part of hectorite afterwards, continue stirring after 1 minute, utilize quick kayser method sheet forming apparatus to copy formulation and measure about 60g/m
2handsheet, and through 105 DEG C of dryings after 10 minutes, utilizing Liquid Penetrant method (GB/T5405-2002) to record handsheet degree of sizing is 87s.
After emulsion places 1 hour, again get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, and applying glue under operating condition similar to the above, copy paper handsheet, the degree of sizing recorded is 85s.
Embodiment 3
0.5 part of hectorite powder is dispersed in 100 parts of deionized waters gradually under constantly stirring, after it is fully swelling, forms hectorite aqueous dispersions; Getting the polyvinylpyrrolidone that 0.05 part of molecular weight is about 160,000 is dissolved in 25 parts of deionized waters; Above-mentioned hectorite aqueous dispersions is mixed with polyvinylpyrrolidonesolution solution, forms aqueous phase.Get in 25 parts of ASA as oil phase.Oil phase is under agitation added and above-mentionedly prepares in aqueous phase, utilize emulsify at a high speed shearing equipment stirring and emulsifying 4 minutes under the rotating speed of 6000 revs/min, obtained oil-in-water type ASA emulsion, in emulsion, the mass percent of ASA is about 16.7%, and emulsion is placed after 72 hours and separated out without aqueous phase or oil phase.
Get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, after defiberizing machine is discongested, adds 1 part of Al
2(SO
4)
318H
2o, mix and blend 1 minute, add the ASA emulsion sizing agent of the above-mentioned preparation of 0.6 share, stir 2 minutes under the speed of 750 revs/min, add 0.01 part of cationic polyacrylamide, after mixing with paper stock, stirring is continued 1 minute under 1500 revs/min of rotating speeds, under 750 revs/min of rotating speeds stir, add 0.3 part of hectorite afterwards, continue stirring after 1 minute, utilize quick kayser method sheet forming apparatus to copy formulation and measure about 60g/m
2handsheet, and through 105 DEG C of dryings after 10 minutes, utilizing Liquid Penetrant method (GB/T5405-2002) to record handsheet degree of sizing is 61s.
After emulsion places 1 hour, again get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, and applying glue under operating condition similar to the above, copy paper handsheet, the degree of sizing recorded is 59s.
Embodiment 4
0.45 part of hectorite powder is dispersed in 50 parts of deionized waters gradually under constantly stirring, after it is fully swelling, forms hectorite aqueous dispersions; Getting the polyvinylpyrrolidone that 0.1 part of molecular weight is about 40,000 is dissolved in 40 parts of deionized waters; Above-mentioned hectorite aqueous dispersions is mixed with polyvinylpyrrolidonesolution solution, forms aqueous phase.Get in 30 parts of ASA as oil phase.The aqueous phase of above-mentioned preparation is under agitation added in oil phase, utilize emulsify at a high speed shearing equipment stirring and emulsifying 3 minutes under the rotating speed of 8000 revs/min, obtained oil-in-water type ASA emulsion, in emulsion, the mass percent of ASA is about 25%, and emulsion is placed after 72 hours and separated out without aqueous phase or oil phase.
Get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, after defiberizing machine is discongested, adds 1 part of Al
2(SO
4)
318H
2o, mix and blend 1 minute, add the ASA emulsion sizing agent of the above-mentioned preparation of 0.4 share, stir 2 minutes under the speed of 750 revs/min, add 0.01 part of cationic polyacrylamide, after mixing with paper stock, stirring is continued 1 minute under 1500 revs/min of rotating speeds, under 750 revs/min of rotating speeds stir, add 0.3 part of hectorite afterwards, continue stirring after 1 minute, utilize quick kayser method sheet forming apparatus to copy formulation and measure about 60g/m
2handsheet, and through 105 DEG C of dryings after 10 minutes, utilizing Liquid Penetrant method (GB/T5405-2002) to record handsheet degree of sizing is 72s.
After emulsion places 1 hour, again get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, and applying glue under operating condition similar to the above, copy paper handsheet, the degree of sizing recorded is 71s.
Embodiment 5
0.3 part of hectorite powder is dispersed in 40 parts of deionized waters gradually under constantly stirring, after it is fully swelling, forms hectorite aqueous dispersions; Getting the polyvinylpyrrolidone that 0.15 part of molecular weight is about 160,000 is dissolved in 20 parts of deionized waters; Above-mentioned hectorite aqueous dispersions is mixed with polyvinylpyrrolidonesolution solution, forms aqueous phase.Get in 30 parts of ASA as oil phase.The aqueous phase of above-mentioned preparation is under agitation added in oil phase, utilize emulsify at a high speed shearing equipment stirring and emulsifying 2 minutes under the rotating speed of 10000 revs/min, obtained oil-in-water type ASA emulsion, in emulsion, the mass percent of ASA is about 33.3%, and emulsion is placed after 72 hours and separated out without aqueous phase or oil phase.
Get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, after defiberizing machine is discongested, adds 1 part of Al
2(SO
4)
318H
2o, mix and blend 1 minute, add the ASA emulsion sizing agent of the above-mentioned preparation of 0.3 share, stir 2 minutes under the speed of 750 revs/min, add 0.01 part of cationic polyacrylamide, after mixing with paper stock, stirring is continued 1 minute under 1500 revs/min of rotating speeds, under 750 revs/min of rotating speeds stir, add 0.3 part of hectorite afterwards, continue stirring after 1 minute, utilize quick kayser method sheet forming apparatus to copy formulation and measure about 60g/m
2handsheet, and through 105 DEG C of dryings after 10 minutes, utilizing Liquid Penetrant method (GB/T5405-2002) to record handsheet degree of sizing is 65s.
After emulsion places 1 hour, again get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, and applying glue under operating condition similar to the above, copy paper handsheet, the degree of sizing recorded is 64s.
Embodiment 6
0.3 part of hectorite powder is dispersed in 60 parts of deionized waters gradually under constantly stirring, after it is fully swelling, forms hectorite aqueous dispersions directly as aqueous phase.Get in 30 parts of ASA as oil phase.The aqueous phase of above-mentioned preparation is under agitation added in oil phase, utilize emulsify at a high speed shearing equipment stirring and emulsifying 3 minutes under the rotating speed of 10000 revs/min, obtained oil-in-water type ASA emulsion, in emulsion, the mass percent of ASA is about 33.3%, and emulsion has a small amount of aqueous phase to separate out after placing 24 hours.
Get 100 share beating degrees and be about 40
othe poplar APMP of SR adds in 9900 parts of water, after defiberizing machine is discongested, adds 1 part of Al
2(SO
4)
318H
2o, mix and blend 1 minute, add the ASA emulsion sizing agent of the above-mentioned preparation of 0.3 share, stir 2 minutes under the speed of 750 revs/min, add 0.01 part of cationic polyacrylamide, after mixing with paper stock, stirring is continued 1 minute under 1500 revs/min of rotating speeds, under 750 revs/min of rotating speeds stir, add 0.3 part of hectorite afterwards, continue stirring after 1 minute, utilize quick kayser method sheet forming apparatus to copy formulation and measure about 60g/m
2handsheet, and through 105 DEG C of dryings after 10 minutes, utilizing Liquid Penetrant method (GB/T5405-2002) to record handsheet degree of sizing is 33s.
Claims (5)
1. hectorite and polyvinylpyrrolidone work in coordination with a stable ASA sizing agent emulsion, it is characterized in that, adopt following method to be prepared from:
First, hectorite and polyvinylpyrrolidone are disperseed with soluble in water respectively, form hectorite colloidal sol and polyvinylpyrrolidonesolution solution;
Then, hectorite colloidal sol and polyvinylpyrrolidonesolution solution mix, as aqueous phase, using ASA as oil phase;
Finally, under agitation aqueous phase being mixed with oil phase, through shearing peptizaiton, preparing stable oil-in-water type ASA emulsion, i.e. ASA emulsion sizing agent;
The mass ratio of ASA and water controls between 1:2 ~ 10;
The mass ratio of hectorite and ASA controls between 1:25 ~ 100;
The mass ratio of polyvinylpyrrolidone and ASA controls between 1:200 ~ 1000;
Shear rate controls at 4000 ~ 10000 revs/min, 2 ~ 5 minutes time.
2. ASA sizing agent emulsion according to claim 1, is characterized in that, the mass ratio of ASA and water is between 1:3 ~ 4.
3. ASA sizing agent emulsion according to claim 1, is characterized in that, the mass ratio of hectorite and ASA is 1:50.
4. ASA sizing agent emulsion according to claim 1, is characterized in that, the mass ratio of polyvinylpyrrolidone and ASA is 1:500.
5. ASA sizing agent emulsion according to claim 1, is characterized in that, by mixing of aqueous phase and oil phase, refers to and is under agitation added in oil phase by aqueous phase.
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| CN109706787B (en) * | 2019-01-30 | 2021-04-13 | 齐鲁工业大学 | Binary particle retention and drainage system for nano-cellulose and application method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5176748A (en) * | 1988-07-05 | 1993-01-05 | Bercen, Inc. | Alkenyl succinic anhydride emulsion |
| CN102493275A (en) * | 2011-12-08 | 2012-06-13 | 山东轻工业学院 | Stable ASA (Alkenyl Succinic Anhydride) papermaking sizing emulsion and preparation method thereof |
| CN102493272A (en) * | 2011-11-18 | 2012-06-13 | 山东轻工业学院 | ASA emulsion sizing agent and preparation method thereof |
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| DE102004010447A1 (en) * | 2004-03-01 | 2005-09-22 | Basf Ag | Aqueous dispersion of reactive sizing agents, process for their preparation and their use |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5176748A (en) * | 1988-07-05 | 1993-01-05 | Bercen, Inc. | Alkenyl succinic anhydride emulsion |
| CN102493272A (en) * | 2011-11-18 | 2012-06-13 | 山东轻工业学院 | ASA emulsion sizing agent and preparation method thereof |
| CN102493275A (en) * | 2011-12-08 | 2012-06-13 | 山东轻工业学院 | Stable ASA (Alkenyl Succinic Anhydride) papermaking sizing emulsion and preparation method thereof |
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