CN107447580B - A kind of emulsifier and a kind of ASA sizing agent emulsion of ASA - Google Patents
A kind of emulsifier and a kind of ASA sizing agent emulsion of ASA Download PDFInfo
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- CN107447580B CN107447580B CN201610371122.0A CN201610371122A CN107447580B CN 107447580 B CN107447580 B CN 107447580B CN 201610371122 A CN201610371122 A CN 201610371122A CN 107447580 B CN107447580 B CN 107447580B
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- asa
- hectorite
- native cornstarch
- sizing agent
- emulsifier
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
Abstract
The present invention relates to the emulsifier of ASA a kind of and a kind of ASA sizing agent emulsions, belong to glue used in paper-making emulsifying technology field.The emulsifier of ASA of the invention is made of native cornstarch and hectorite according to the mass ratio of 2.5-15:1.Native cornstarch therein is both containing the amylopectin of multiple-branching construction, also containing the amylose of linear structure, and itself neutral, it is intermolecular that electrostatic repulsion is not present；And hectorite has disk-like structure, large specific surface area has negative electrical charge, has good suction-operated to ASA, and can enter between the branch of branched amylopectin molecules.When native cornstarch and hectorite, which are combined, stablizes ASA lotion, the hectorite of branched amylopectin molecules with multiple-branching construction, linear amylose molecule and sheet cooperates, complete, fine and close interfacial film is formed around ASA oil droplet, play the role of steric hindrance, thus effectively prevent between ASA oil droplet it is poly- simultaneously；To play the role of stable emulsifying ASA.
Description
Technical field
The present invention relates to the emulsifier of ASA a kind of and a kind of ASA sizing agent emulsions, belong to glue used in paper-making emulsifying technology neck
Domain.
Background technique
ASA(alkenyl succinic anhydride, alkenyl succinic anhydride) it is made as important neutral and alkali response type
Paper gluing agents are more and more widely used in paper industry.ASA reactivity height, facile hydrolysis, Chang Yiqi grease
Form supplies papermaking enterprise, and emulsifies at paper machine room scene, is added in paper manufacturing systems with the lotion of oil-in-water type.Currently, work
Being used to emulsify the emulsifier of ASA in industry includes: cationic starch, anionic dispersing agents and solid particle.
The quaternary ammonium group of cationic starch both can promote the sizing of ASA, also have facilitation to the hydrolysis of ASA in lotion.
In order to reduce the hydrolysis of ASA and improve the sizability of ASA lotion, the cationic starch additional amount as emulsion stabilizer is usually
Up to 2 to 6 times of ASA.Because of starch solution large viscosity, it has to reduce the concentration of lotion in emulsion process, i.e. ASA's effectively contains
Amount.Therefore, in the stable ASA lotion of cationic starch, the effective content of ASA is only 1%, and which not only improves the systems of lotion
Standby cost, also reduces the production efficiency of lotion preparation.In addition, anionic dispersing agents usually reduce the sizability of paper.
Similar with surfactant, solid particle is also required to just be adsorbed on oil-water interfaces by oil and water wetting simultaneously,
And the lotion of the degree being spontaneously wet out by water ability stabilised oil-in-water higher than the degree being wetting by the oil.ASA is a kind of polar oil, than
Common nonpolar oil is easier to soak polar solid particle, and results in water-in-oil emulsion.Therefore, it to prepare stable
Oil-in-water type ASA paper-making sizing agent emulsion needs to select the biggish solid particle of polarity.It is presently found to ASA emulsion-stabilizing
Acting on solid particle stabilizer that is best, being more advantageous to promotion ASA sizing is hectorite；But hectorite itself can not be completely steady
Determine ASA lotion, need by such as n-butylamine, alanine, urea, melamine, quaternary ammonium salt-modified of the small-molecule substance containing amido,
It, could complete stability ASA lotion after improving to the wettability of ASA.However, n-butylamine, alanine and quaternary ammonium salt-modified lithium soap
The stable ASA lotion sizability of stone has more apparent reduction with the extension of standing time；And acyl of the urea as small molecule
When amine is modified to hectorite, with the big deficiency of additional amount.In addition, polyaluminium sulfate can as a kind of inorganic cationic polymer
It is acted on the hectorite with negative electrical charge, causes the dehydration cohesion of hectorite, reduce the hydrophily of hectorite, combine with hectorite
When stablizing ASA lotion, lotion has good hydrolytic stability and sizing efficiency；But polyaluminium sulfate needs scene synthesis, makes
ASA lotion that technology is prepared in situ is rather complicated.In addition to this, the prior art, which also discloses, utilizes polyvinylpyrrolidone and lithium
Saponite, which is combined, stablizes ASA lotion, and polyvinylpyrrolidonemolecules molecules amount is higher, and is in faint positive charge, by causing hectorite
Faint wadding it is poly-, improve its stability that stable ASA sizing agent emulsion is cooperateed with stone hectorite, ASA sizing agent emulsion is placed
Sizing efficiency after 1h does not have significant change.However, it is similar with the stable ASA lotion of other modified hectorites, in the lotion
In preparation, hectorite be still prepare ASA lotion Soil stability agent and price it is higher, promote ASA sizing while, also can
Promote the hydrolysis of ASA, it is therefore still necessary to further decrease lotion preparation cost and reduce the hydrolysis of ASA.
Summary of the invention
The purpose of the present invention is to provide it is a kind of it is low in cost, emulsibility is good, hydrolytic stability is good, for emulsifying ASA's
Emulsifier；And a kind of ASA sizing agent emulsion that sizability is high.
The present invention has found in the course of the research, and in addition to cationic starch, non-ionic native cornstarch can also be incited somebody to action
ASA emulsification.Although after reducing native cornstarch dosage, emulsion de-emulsifies phenomenon introduces a small amount of hectorite energy in system
Significantly improve ASA emulsion intercalation method；Even dosage of the native cornstarch with respect to ASA is reduced to 2%, hectorite is with respect to ASA's
Additional amount still is able to obtain stable ASA lotion less than 0.35%, and the presence of hectorite significantly improves applying for ASA lotion
Glue efficiency.
The technical solution of the present invention is as follows:
A kind of emulsifier of ASA is made of native cornstarch and hectorite according to the mass ratio of 2.5-15:1.
Preferably, the mass ratio of native cornstarch and hectorite is 20/3:1.
A kind of ASA sizing agent emulsion, is made of the emulsifier of above-mentioned ASA, deionized water and ASA,
Wherein, the mass ratio of the native cornstarch in the emulsifier of ASA and ASA are 1:20-50；
ASA and the mass ratio of deionized water are 1:2-4.
Above-mentioned ASA sizing agent emulsion, it is preferred that
The mass ratio of native cornstarch and ASA are 1:30；
ASA and the mass ratio of deionized water are 1:3.
ASA sizing agent emulsion of the invention, is emulsion oil-in-water.
The preparation method of above-mentioned ASA sizing agent emulsion, comprising the following steps:
1) native cornstarch is dispersed in portions of de-ionized water, and gelatinization obtains native cornstarch solution；
2) hectorite is dispersed in remaining deionized water, prepares hectorite colloidal sol；
3) native cornstarch solution is mixed with hectorite colloidal sol, as water phase；Using ASA as oily phase；
4) water phase and oil are mixed under agitation, shear agitation is to get ASA emulsion sizing agent.
The preparation method of above-mentioned ASA sizing agent emulsion, it is preferred that
The concrete operations of " gelatinization " are as follows: after being heated to 90 DEG C under stiring, then constant temperature, 20 min of stirring cool down
To room temperature；It is preferred that cooling rapidly.
The preparation method of above-mentioned ASA sizing agent emulsion, " water phase and oil are mixed ", but both water phase was added under stiring
Into oily phase, it can also be and oil is added in water phase under stiring, Preferable scheme is that water phase is added in oily phase under stiring.
Any stirring and shearing can be used in " shear agitation " of the preparation method of above-mentioned ASA sizing agent emulsion, the step 4
Equipment；Preferably, shear agitation speed general control is at 3000-6000 revs/min, the shear agitation time 2~5 minutes；More preferably
, shear agitation speed is preferably controlled in 4000-5000 revs/min, the shear agitation time 3~4 minutes.
ASA according to the present invention is existing not emulsified for the various of paper-making sizing in liquid form under room temperature
Alkenyl succinic anhydride industrial products, the generally mixture of hexadecylene base succinic anhydride, octadecenyl succinic anhydride or both.
Native cornstarch molecular formula according to the present invention is C6H12O6-(C6H10O5)n, it is a kind of Cereal natural polymer
Sub- polysaccharide, basic structural unit are α-pyrans formula dehydrated glucose, are made of 28% amylose and 72% amylopectin, and straight chain forms sediment
The degree of polymerization of powder is in 300-1200 or so, and the average degree of polymerization of amylopectin is in 30-200 ten thousand or so.
Hectorite also known as lithium soap soil according to the present invention, is a kind of synthesis Magnesosilicate product, ideal structure formula is
Na0.7[(Si8Mg5.5Li0.3)O20(OH)4], there is discoid grain structure, particle surface has permanent negative electrical charge, and disk is straight
Diameter is about 20-30 nm, and thickness is about 1 nm.
The emulsifier of ASA of the invention, native cornstarch therein both containing the amylopectin of multiple-branching construction, also contained
The amylose of linear structure, and itself neutral, it is intermolecular that electrostatic repulsion is not present；And hectorite has disk-like structure
(diameter 25nm or so, thickness 0.92nm), large specific surface area have negative electrical charge, have good suction-operated to ASA, and can
Into between the branch of branched amylopectin molecules.When native cornstarch and hectorite, which are combined, stablizes ASA lotion, wherein having three-dimensional
The hectorite of the branched amylopectin molecules of multiple-branching construction, linear amylose molecule and sheet cooperates, the shape around ASA oil droplet
At complete, fine and close interfacial film, play the role of steric hindrance, thus effectively prevent between ASA oil droplet it is poly- simultaneously.Therefore, originally
The emulsifier of invention is good to the emulsifying effectiveness of ASA, can be obtained stable ASA sizing agent emulsion under conditions of dosage is less；
And ASA sizing agent emulsion obtained, even if after placing 24 hours, being also mutually precipitated without water phase or oil.
Simultaneously as native cornstarch itself is without containing energy and the ammonia ammonium that its hydrolysis is reacted or promoted between ASA carboxyl
Base effectively inhibits the hydrolysis of ASA in ASA lotion.So native cornstarch of the invention cooperates with stable ASA with hectorite
Sizing agent emulsion, hydrolytic stability significantly improve；Even sizing efficiency is also without significant change after lotion is placed 3 hours.
The small molecule amine for containing amino with other is modified the stable ASA emulsion sizing agent and polyvinylpyrrolidone of hectorite
Compared with combining stable ASA emulsion sizing agent with hectorite, native cornstarch of the invention cooperates with stable ASA to apply with hectorite
Jelly lotion, not only significantly reduces the dosage of hectorite, and the hydrolytic stability of lotion also significantly improves；And and cationic starch
Stable ASA emulsion sizing agent is compared, and native cornstarch of the invention cooperates with stable ASA sizing agent emulsion very big with hectorite
Ground reduces starch dosage, improves the effective ASA content and sizing efficiency of lotion.
Specific embodiment
The present invention is further explained in the light of specific embodiments, does not constitute any limitation of the invention.It removes
Otherwise indicated, the number in embodiment is by weight.
Comparative example 1
0.2 part of lithium soap stone powder is gradually dispersed under constant stirring in 75 parts of deionized waters, after it is sufficiently swollen,
Hectorite aqueous dispersions are formed, as water phase；Take 25 parts of ASA as oily phase.Oil is added in the water phase of above-mentioned preparation under stiring
Xiang Zhong emulsifies shearing equipment stirring and emulsifying 3 minutes under 4000 revs/min of revolving speed using high speed, oil-in-water type ASA emulsus is made
Liquid, the mass percent of ASA is about 25% in emulsion, after lotion is placed 1 hour, so that it may observe the precipitation of a small amount of water phase；
Oily mutually precipitation is clearly visible after 2 hours.
Taking 100 share beating degrees is about 40oThe poplar APMP of SR is added in 9900 parts of water, through fiber
After fluffer is discongested, 1 part of Al is added2(SO4)2·18H2O is mixed 1 minute, and the ASA cream of the above-mentioned preparation of 0.8 share is added
Liquid sizing agent stirs 2 minutes under 750 revs/min of speed, 0.01 part of cationic polyacrylamide is added, mixes with paper stock
After uniformly, continues stirring 1 minute under 1500 revs/min of revolving speeds, be added with stirring 0.3 part of lithium soap in 750 revs/min of revolving speeds later
Stone copies about 60 g/m of formulation amount using quick kayser method sheet forming apparatus after continuing stirring 1 minute2Handsheet, and through 105oC is dry after ten minutes, and measuring handsheet degree of sizing using Liquid Penetrant method (GB/T5405-2002) is 143s.
After lotion is placed 3 hours, lotion is shaken, lotion is uniformly dispersed again, takes the 100 share beating degrees to be about again
40oThe poplar APMP of SR is added in 9900 parts of water, is glued under operating condition similar to the above, the system of copying
Handsheet, the degree of sizing measured are 95 s.
Comparative example 2
It takes 1.25 parts of native cornstarchs to be distributed in 75 parts of deionized waters, is warming up to 90oC, gelatinization after twenty minutes, are cooled to
30oC is hereinafter, as water phase；Take 25 parts of ASA as oily phase.The water phase of above-mentioned preparation is added in oily phase under stiring, utilizes height
Speed emulsification shearing equipment stirring and emulsifying 3 minutes under 4000 revs/min of revolving speed, are made oil-in-water type ASA emulsion, in emulsion
The mass percent of ASA is about 25%, and lotion, which is placed, begins with big ASA oil droplet precipitation for 2 hours；Water is slowly precipitated after 2.5 hours
Phase.
Taking 100 share beating degrees is about 40oThe poplar APMP of SR is added in 9900 parts of water, through fiber
After fluffer is discongested, 1 part of Al is added2(SO4)2·18H2O is mixed 1 minute, and the ASA cream of the above-mentioned preparation of 0.8 share is added
Liquid sizing agent stirs 2 minutes under 750 revs/min of speed, 0.01 part of cationic polyacrylamide is added, mixes with paper stock
After uniformly, continues stirring 1 minute under 1500 revs/min of revolving speeds, be added with stirring 0.3 part of lithium soap in 750 revs/min of revolving speeds later
Stone copies about 60 g/m of formulation amount using quick kayser method sheet forming apparatus after continuing stirring 1 minute2Handsheet, and through 105oC is dry after ten minutes, is 23s using Liquid Penetrant method (GB/T5405-2002) measurement handsheet degree of sizing.
After lotion is placed 3 hours, lotion is shaken, lotion is uniformly dispersed again, takes the 100 share beating degrees to be about again
40oThe poplar APMP of SR is added in 9900 parts of water, is glued under operating condition similar to the above, the system of copying
Handsheet, the degree of sizing measured are 7 s.
Comparative example 3
0.5 part of lithium soap stone powder is gradually dispersed under constant stirring in 50 parts of deionized waters, after it is sufficiently swollen,
Form hectorite aqueous dispersions；The polyvinylpyrrolidone that 0.1 part of molecular weight is about 40,000 is taken to be dissolved in 25 parts of deionized waters；It will
Above-mentioned hectorite aqueous dispersions are mixed with polyvinylpyrrolidonesolution solution, form water phase.Take 25 parts of ASA as oily phase.It will be above-mentioned
The water phase of preparation is added under stiring in oily phase, emulsifies shearing equipment stirring and emulsifying 5 under 3000 revs/min of revolving speed using high speed
Minute, oil-in-water type ASA emulsion is made, the mass percent of ASA is about 25% in emulsion, nothing after lotion is placed 24 hours
Water phase or oil are mutually precipitated.
Taking 100 share beating degrees is about 40oThe poplar APMP of SR is added in 9900 parts of water, through fiber
After fluffer is discongested, 1 part of Al is added2(SO4)2·18H2O is mixed 1 minute, and the ASA cream of the above-mentioned preparation of 0.8 share is added
Liquid sizing agent stirs 2 minutes under 750 revs/min of speed, 0.01 part of cationic polyacrylamide is added, mixes with paper stock
After uniformly, continues stirring 1 minute under 1500 revs/min of revolving speeds, be added with stirring 0.3 part of lithium soap in 750 revs/min of revolving speeds later
Stone copies about 60 g/m of formulation amount using quick kayser method sheet forming apparatus after continuing stirring 1 minute2Handsheet, and through 105oC is dry after ten minutes, and measuring handsheet degree of sizing using Liquid Penetrant method (GB/T5405-2002) is 253s.
After lotion is placed 3 hours, taking 100 share beating degrees again is about 40oThe poplar APMP of SR
It is added in 9900 parts of water, is glued under operating condition similar to the above, copies handsheet processed, the degree of sizing measured is 207s.
Embodiment 1
0.2 part of lithium soap stone powder is gradually dispersed under constant stirring in 20 parts of deionized waters, after it is sufficiently swollen,
Form hectorite aqueous dispersions；It takes in 0.5 part of native cornstarch, 55 parts of deionized waters, is warming up to 90oC, gelatinization are after twenty minutes, cold
But to 30oC or less.Above-mentioned hectorite aqueous dispersions are mixed with native cornstarch solution, form water phase；Take 25 parts of ASA conducts
Oily phase.The water phase of above-mentioned preparation is added under stiring in oily phase, using high speed emulsification shearing equipment in 4000 revs/min of revolving speed
Oil-in-water type ASA emulsion is made in lower stirring and emulsifying 3 minutes, and the mass percent of ASA is about 25% in emulsion, and lotion is placed
It is mutually precipitated after 24 hours without water phase or oil.
Taking 100 share beating degrees is about 40oThe poplar APMP of SR is added in 9900 parts of water, through fiber
After fluffer is discongested, 1 part of Al is added2(SO4)2·18H2O is mixed 1 minute, and the ASA cream of the above-mentioned preparation of 0.8 share is added
Liquid sizing agent stirs 2 minutes under 750 revs/min of speed, 0.01 part of cationic polyacrylamide is added, mixes with paper stock
After uniformly, continues stirring 1 minute under 1500 revs/min of revolving speeds, be added with stirring 0.3 part of lithium soap in 750 revs/min of revolving speeds later
Stone copies about 60 g/m of formulation amount using quick kayser method sheet forming apparatus after continuing stirring 1 minute2Handsheet, and through 105oC is dry after ten minutes, and measuring handsheet degree of sizing using Liquid Penetrant method (GB/T5405-2002) is 276s.
After lotion is placed 3 hours, taking 100 share beating degrees again is about 40oThe poplar APMP of SR
It is added in 9900 parts of water, is glued under operating condition similar to the above, copies handsheet processed, the degree of sizing measured is 255s.
Embodiment 2
0.15 part of lithium soap stone powder is gradually dispersed under constant stirring in 15 parts of deionized waters, is sufficiently swollen to it
Afterwards, hectorite aqueous dispersions are formed；It takes in 1 part of native cornstarch, 45 parts of deionized waters, is warming up to 90oC is gelatinized after twenty minutes,
It is cooled to 30oC or less.Above-mentioned hectorite aqueous dispersions are mixed with native cornstarch solution, form water phase；30 parts of ASA are taken to make
For oily phase.The water phase of above-mentioned preparation is added under stiring in oily phase, using high speed emulsification shearing equipment in 6000 revs/min of turn
Speed is stirring and emulsifying 2 minutes lower, oil-in-water type ASA emulsion is made, the mass percent of ASA is about 33.3% in emulsion, lotion
It is mutually precipitated after placing 24 hours without water phase or oil.
Taking 100 share beating degrees is about 40oThe poplar APMP of SR is added in 9900 parts of water, through fiber
After fluffer is discongested, 1 part of Al is added2(SO4)2·18H2O is mixed 1 minute, and the ASA cream of the above-mentioned preparation of 0.6 share is added
Liquid sizing agent stirs 2 minutes under 750 revs/min of speed, 0.01 part of cationic polyacrylamide is added, mixes with paper stock
After uniformly, continues stirring 1 minute under 1500 revs/min of revolving speeds, be added with stirring 0.3 part of lithium soap in 750 revs/min of revolving speeds later
Stone copies about 60 g/m of formulation amount using quick kayser method sheet forming apparatus after continuing stirring 1 minute2Handsheet, and through 105oC is dry after ten minutes, and measuring handsheet degree of sizing using Liquid Penetrant method (GB/T5405-2002) is 271s.
After lotion is placed 3 hours, taking 100 share beating degrees again is about 40oThe poplar APMP of SR
It is added in 9900 parts of water, is glued under operating condition similar to the above, copies handsheet processed, the degree of sizing measured is 256s.
Embodiment 3
0.1 part of lithium soap stone powder is gradually dispersed under constant stirring in 10 parts of deionized waters, after it is sufficiently swollen,
It is formed and is used as water phase between hectorite aqueous dispersions；It takes in 1 part of native cornstarch, 65 parts of deionized waters, is warming up to 90oC, gelatinization
After twenty minutes, 30 are cooled tooC or less.Above-mentioned hectorite aqueous dispersions are mixed with native cornstarch solution, form water phase；It takes
As oily phase in 25 parts of ASA.The water phase of above-mentioned preparation is added under stiring in oily phase, using high speed emulsification shearing equipment in
Oil-in-water type ASA emulsion is made in stirring and emulsifying 5 minutes under 3000 revs/min of revolving speed, the mass percent of ASA in emulsion
About 25%, lotion is mutually precipitated after placing 24 hours without water phase or oil.
Taking 100 share beating degrees is about 40oThe poplar APMP of SR is added in 9900 parts of water, through fiber
After fluffer is discongested, 1 part of Al is added2(SO4)2·18H2O is mixed 1 minute, and the ASA cream of the above-mentioned preparation of 0.3 share is added
Liquid sizing agent stirs 2 minutes under 750 revs/min of speed, 0.01 part of cationic polyacrylamide is added, mixes with paper stock
After uniformly, continues stirring 1 minute under 1500 revs/min of revolving speeds, be added with stirring 0.3 part of lithium soap in 750 revs/min of revolving speeds later
Stone copies about 60 g/m of formulation amount using quick kayser method sheet forming apparatus after continuing stirring 1 minute2Handsheet, and through 105oC is dry after ten minutes, and measuring handsheet degree of sizing using Liquid Penetrant method (GB/T5405-2002) is 236s.
After lotion is placed 3 hours, taking 100 share beating degrees again is about 40oThe poplar APMP of SR
It is added in 9900 parts of water, is glued under operating condition similar to the above, copies handsheet processed, the degree of sizing measured is 212s.
Embodiment 4
0.1 part of lithium soap stone powder is gradually dispersed under constant stirring in 30 parts of deionized waters, after it is sufficiently swollen,
Form hectorite aqueous dispersions；It takes in 1.5 parts of native cornstarchs, 90 parts of deionized waters, is warming up to 90oC, gelatinization are after twenty minutes, cold
But to 30oC or less；Above-mentioned hectorite aqueous dispersions are mixed with native cornstarch solution, form water phase.It takes in 30 parts of ASA and makees
For oily phase.The water phase of above-mentioned preparation is added under stiring in oily phase, using high speed emulsification shearing equipment in 5000 revs/min of turn
Speed is stirring and emulsifying 3 minutes lower, oil-in-water type ASA emulsion is made, the mass percent of ASA is about 20% in emulsion, and lotion is put
It is mutually precipitated after setting 24 hours without water phase or oil.
Taking 100 share beating degrees is about 40oThe poplar APMP of SR is added in 9900 parts of water, through fiber
After fluffer is discongested, 1 part of Al is added2(SO4)2·18H2O is mixed 1 minute, and the ASA lotion of the above-mentioned preparation of 1 share is added
Sizing agent stirs 2 minutes under 750 revs/min of speed, 0.01 part of cationic polyacrylamide is added, mixes with paper stock
After even, continue stirring 1 minute under 1500 revs/min of revolving speeds, is added with stirring 0.3 part of hectorite in 750 revs/min of revolving speeds later,
After continuing stirring 1 minute, about 60 g/m of formulation amount is copied using quick kayser method sheet forming apparatus2Handsheet, and through 105oC is dry
It is dry after ten minutes, using Liquid Penetrant method (GB/T5405-2002) measure handsheet degree of sizing be 162s.
After lotion is placed 0.5 hour, taking 100 share beating degrees again is about 40oThe poplar alkaline hydrogen peroxide of SR is mechanical
Slurry is added in 9900 parts of water, is glued under operating condition similar to the above, copies handsheet processed, and the degree of sizing measured is 145s.
Embodiment 5
0.125 part of lithium soap stone powder is gradually dispersed under constant stirring in 20 parts of deionized waters, is sufficiently swollen to it
Afterwards, hectorite aqueous dispersions are formed；It takes in 1.2 parts of native cornstarchs, 55 parts of deionized waters, is warming up to 90oC is gelatinized 20 minutes
Afterwards, 30 are cooled tooC or less.Above-mentioned hectorite aqueous dispersions are mixed with native cornstarch solution, form water phase；Take 25 parts of ASA
As oily phase.Above-mentioned oil is mutually added in the water phase of preparation under stiring, using high speed emulsification shearing equipment in 4000 revs/min
Oil-in-water type ASA emulsion is made in stirring and emulsifying 4 minutes under revolving speed, and the mass percent of ASA is about 25% in emulsion, lotion
It is mutually precipitated after placing 24 hours without water phase or oil.
Taking 100 share beating degrees is about 40oThe poplar APMP of SR is added in 9900 parts of water, through fiber
After fluffer is discongested, 1 part of Al is added2(SO4)2·18H2O is mixed 1 minute, and the ASA cream of the above-mentioned preparation of 0.8 share is added
Liquid sizing agent stirs 2 minutes under 750 revs/min of speed, 0.01 part of cationic polyacrylamide is added, mixes with paper stock
After uniformly, continues stirring 1 minute under 1500 revs/min of revolving speeds, be added with stirring 0.3 part of lithium soap in 750 revs/min of revolving speeds later
Stone copies about 60 g/m of formulation amount using quick kayser method sheet forming apparatus after continuing stirring 1 minute2Handsheet, and through 105oC
After ten minutes, measuring handsheet degree of sizing using Liquid Penetrant method (GB/T5405-2002) is 207s for drying.
After lotion is placed 3 hours, taking 100 share beating degrees again is about 40oThe poplar APMP of SR
It is added in 9900 parts of water, is glued under operating condition similar to the above, copies handsheet processed, the degree of sizing measured is 185s.
Claims (9)
1. a kind of emulsifier of ASA, which is characterized in that by native cornstarch and hectorite according to the mass ratio group of 2.5-15:1
At；The native cornstarch molecular formula is C6H12O6-(C6H10O5) n, basic structural unit is α-pyrans formula dehydrated glucose,
It is made of 28% amylose and 72% amylopectin, the degree of polymerization of amylose is 300-1200, and the degree of polymerization of amylopectin is
30-200 ten thousand.
2. the emulsifier of ASA according to claim 1, which is characterized in that the mass ratio of native cornstarch and hectorite is
20/3:1。
3. a kind of ASA sizing agent emulsion, is made of the emulsifier of ASA of any of claims 1 or 2, deionized water and ASA；
The mass ratio of native cornstarch and ASA in the emulsifier of ASA is 1:20-50；
ASA and the mass ratio of deionized water are 1:2-4.
4. ASA sizing agent emulsion according to claim 3, which is characterized in that
The mass ratio of native cornstarch and ASA are 1:30；ASA and the mass ratio of deionized water are 1:3.
5. a kind of preparation method of claim 3 or 4 ASA sizing agent emulsion, which comprises the following steps:
1) native cornstarch is dispersed in portions of de-ionized water, and gelatinization obtains native cornstarch solution；
2) hectorite is dispersed in remaining deionized water, prepares hectorite colloidal sol；
3) native cornstarch solution is mixed with hectorite colloidal sol, as water phase；Using ASA as oily phase；
4) water phase and oil are mixed under agitation, shear agitation is to get ASA emulsion sizing agent.
6. preparation method according to claim 5, which is characterized in that the concrete operations of " gelatinization " are as follows: under stiring
After being heated to 90 DEG C, 20 min are stirred under constant temperature, are then cooled to room temperature.
7. preparation method according to claim 5 or 6, which is characterized in that
" mixing water phase and oil " is that water phase is added in oily phase under stiring.
8. preparation method according to claim 7, which is characterized in that the speed control of " shear agitation " of the step 4)
At 3000-6000 revs/min, the shear agitation time 2~5 minutes.
9. preparation method according to claim 8, which is characterized in that the speed control of " shear agitation " of the step 4)
At 4000-5000 revs/min, the shear agitation time 3~4 minutes.
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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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