CN103194934B - A kind of preparation method by the glue used in paper-making of chip solid particle emulsification - Google Patents
A kind of preparation method by the glue used in paper-making of chip solid particle emulsification Download PDFInfo
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- CN103194934B CN103194934B CN201310109499.5A CN201310109499A CN103194934B CN 103194934 B CN103194934 B CN 103194934B CN 201310109499 A CN201310109499 A CN 201310109499A CN 103194934 B CN103194934 B CN 103194934B
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Abstract
The invention discloses the preparation method of the glue used in paper-making of a kind of chip solid particle emulsification, silane coupler first mixes with flake nano bentonite solid particle by the method, and be scattered in deionized water, then add toluene or absolute ethyl alcohol, obtained modified alta-mud suspension; Then silane coupler modified flake nano bentonite solid particle dispersions is even in deionized water for stirring, adjust ph to 3.5 ~ 9.5; Stir after again atoleine being mixed with alkenyl succinic anhydride, obtain the applying glue fluid mixed; Mixed with described bentonite water slurry by applying glue fluid, mixture obtains the glue used in paper-making of chip solid particle stable emulsifying after emulsification again.This has high stability, and preparation technology is simple, does not need to add any surfactant again and alkenyl succinic anhydride just can be emulsified into stable emulsion by complex polyelectrolyte particle, and emulsifier is few, emulsification is with low cost, and environmental pollution is low.
Description
Technical field
The present invention relates to the preparation method of glue used in paper-making, the preparation method of the efficient glue used in paper-making of particularly chip solid particle emulsification.
Background technology
Paper industry turns to neutral and alkali copy paper by acid copy paper system in recent years, is the innovative change of paper technology, increases substantially paper quality expansion filler scope, reduces slurry consumption, energy consumption, alleviate environmental pollution, extend the service life of equipment.Europe phase early 1980s with in, the cultural paper produced of alkaline bleach liquor sizing accounts for 60% ~ 65% of cultural paper total amount, enters the nineties up to 95%, in same period U.S.'s fine paper, alkaline bleach liquor sizing ratio rises to more than 90% by 15%.China from 1989, start aborning adopt in, alkaline bleach liquor sizing, progressively popularize in recent years, at present based on alkyl ketene dimer (AKD) and alkenyl succinic anhydride (ASA), big-and-middle-sized paper plant gradually adopts ASA.Be widely used in senior paper and paperboard internal sizing because ASA sizing agent reactivity is high, sizing material cost is low, curing speed fast, be particularly applicable to the applying glue of the large high-speed paper machine of on-line coater.But ASA is a kind of papermaking neutral sizing agent of high reaction activity, hydrolysis rate is very fast, its emulsion the room temperature storage time more than 1 hour after, sizing efficiency reduces, hydrolysate can cause paper making obstacle and reduce sizing efficiency, therefore use during ASA and require that it can by quick emulsification, the emulsion after emulsification should use as early as possible.And alkenyl succinic anhydride (ASA) is not only very easily hydrolyzed, also very easily there is alcoholysis, ammonia solution, so alcohols, carboxylic acids, ammoniac compounds should not as the emulsifying agents of ASA.The emulsification of current ASA sizing agent mainly utilizes cationic starch and low-molecular-weight surfactant to carry out on-the-spot emulsification, and uses at once.But starch re-uses after needing first gelatinization, cooling, makes ASA emulsifying process rather complicated, wayward, and usually cause the problem such as deposition, blocking woollen blanket.Surfactant wherein also brings certain adverse effect to applying glue, and also brings certain pollution to environment.
Solid (particle) stable type emulsion, be commonly called Pickering emulsion, it is that one does not need to add conventional polymer organic surface active agent, and the emulsion of stable emulsifying is only got final product with solia particle, the solia particle being adsorbed in oil-water interfaces place has high energy of adsorption E, solia particle is made to be difficult to depart from from oil-water interfaces again, can think that this mode by solia particle stable emulsifying emulsion is irreversible, and Pickering emulsion has very strong stability, current this emulsifying technology and research are widely used in every profession and trade and field.Pickering emulsion is owing to avoiding using macromolecule organic emulsifier thus the complexity that can reduce emulsifying process, and improving emulsion intercalation method and reduce the environmental pollution etc. caused by emulsifying agent denouncing, is a kind of New Emulsion having potential using value.
The research of aspect is prepared in the emulsification of current ASA sizing agent and achievement is also enriched gradually.US Patent No. 6,346,554 disclose a kind of method utilizing natural plant to carry out stable ASA emulsion, it is said natural plant gum by improve the retention of ASA on fiber, the hydrolysis reducing ASA and the deposition problems caused thus and form more uniform film at fiber surface and improve ASA execute efficiency.
US Patent No. 5,962,555 disclose a kind of method utilizing the mixture of ionene polymer and polymine to carry out emulsification ASA, and ionene polymer wherein not only can improve the effect that sizing efficiency also has sterilization.Although these inventions eliminate starch gelatinization to the inconvenience that operation brings, but, in order to obtain stable ASA emulsion, still need the surfactant of interpolation about 2%.
US Patent No. 6,284,099 discloses a kind of papermaking anionic microparticles retention agent such as bentonite, cataloid, organic fine particles and a small amount of surfactant and chelating agent of utilizing stablizes the method for ASA emulsion, microparticle retention aid and sizing agent can be united two into one, simplify operation, reduce the consumption of surfactant.But still the adverse effect that can not surfactant avoided completely to bring, and particulate constituent addition is excessive, prepared ASA emulsion concentration is very low, is unfavorable for the storage of emulsion, and ASA hydrolysis is serious.
Summary of the invention
The present invention is in order to overcome the deficiency of above technology, and the invention provides a kind ofly does not need to add the preparation method that alkenyl succinic anhydride just can be emulsified into the efficient glue used in paper-making of the chip solid particle emulsification of the emulsion of high stable by any conventional surfactant and complex polyelectrolyte particle.
The present invention is as emulsion solids particle emulsion stabilizer using silane coupler modified flake nano bentonite, atoleine is dispersed in alkenyl succinic anhydride fluid, then silane coupler modified flake nano bentonite solids suspension is mixed with the mixed oil liquid of atoleine, alkenyl succinic anhydride, mixture high-speed shearing emulsion machine emulsification, thus obtain by the efficient glue used in paper-making of chip solid particle emulsification.
Object of the present invention realizes especially by following technical proposals:
A preparation method for the glue used in paper-making of chip solid particle emulsification, comprises the steps:
(1) preparation of nano modification bentonite solid particle: be that 25nm ~ 300nm flake nano bentonite solid particle mixes by silane coupler and individual particle diameter, and be scattered in deionized water, add toluene or absolute ethyl alcohol again, at 25 DEG C ~ 90 DEG C, constant temperature stirs 3 ~ 12 hours, leave standstill and be cooled to room temperature, obtain modified alta-mud suspension, then extracting gained suspension, the decorating film toluene of extracting gained or ethanol cyclic washing 3 ~ 5 times; Cross 200 mesh sieves after again decorating film being dried grinding, gained residue on sieve is silane coupler modified flake nano bentonite solid particle; The alcoxyl fundamental mode silane coupler containing four ~ dodecyl of described silane coupler to be carbon chain lengths be C2 ~ C12, dialkoxy fundamental mode silane coupler or tri-alkoxy type silane coupler; Described toluene or absolute ethyl alcohol and the bentonitic mass ratio 20: 1 ~ 100: 1 of flake nano; Described deionized water and the bentonitic mass ratio of flake nano are 4: 1 ~ 20: 1; Described silane coupler is 0.05% ~ 50% of the quality of flake nano bentonite solid particle;
(2) preparation of applying glue fluid: by even in deionized water for stirring for silane coupler modified flake nano bentonite solid particle dispersions, obtain the water slurry that bentonite mass percent is 0.2% ~ 8%, and regulate water slurry pH value to 3.5 ~ 9.5; Stir after being mixed with alkenyl succinic anhydride by atoleine, obtain the applying glue fluid mixed, the mass percent of described atoleine in applying glue fluid is 10% ~ 60% again;
(3) preparation of glue used in paper-making: by described applying glue fluid and described bentonite water slurry according to 1: 7 ~ 3: 1 volume ratio mix, mixture obtains the glue used in paper-making of chip solid particle stable emulsifying after emulsification.
For realizing the object of the invention further, step 3) emulsification of described mixture high-speed shearing emulsion machine.The shear rate of described emulsification is 3000 revs/min ~ 20000 revs/min, and the time is 2 ~ 10 minutes.The cation radical of described flake nano bentonite solid particle is sodium ion, calcium ion, magnesium ion, lithium ion or ammonium ion.Described deionized water is the deionized water that resistance is greater than 18M Ω cm.Described alkenyl succinic anhydride (ASA) is the 16 alkenyl succinic acid anhydride monomers arriving eicosyl, or contains the mixture that 16 arrive the alkenyl succinic anhydride of eicosyl.Described silane coupler is γ-methacryloxypropyl trimethoxy silane, γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-chloropropyl triethoxysilane, N-β-(aminoethyl)-γ-aminopropyltriethoxy dimethoxy silane or methylvinyldimethoxysilane.Described pH value is regulated by one or more in hydrochloric acid, acetic acid, uric acid and citric acid.
Described atoleine is C16 ~ C20 normal paraffin mixture, exists in liquid form under normal temperature, and as preferably, the mass fraction of atoleine in applying glue fluid is 10% ~ 60%.
Compared with prior art, the present invention has the following advantages:
(1) preparation method's emulsifying process of paper-making sizing agent emulsion of the present invention simply, does not need to add the emulsion that ASA (alkenyl succinic anhydride) just can be emulsified into high stability by any conventional surfactant and complex polyelectrolyte particle;
(2) the flake nano modified cation chip solid particle of the Irreversible Adsorption related in the present invention, ASA stable emulsifying can be formed pik crop type emulsion, this emulsion has high stability.The atoleine used has the multiple action reducing fluid polarity, assist emulsification, improve sizability.Preparation technology of the present invention is simple, does not need to add any surfactant again and alkenyl succinic anhydride just can be emulsified into stable emulsion by complex polyelectrolyte particle, and emulsifier is few, emulsification is with low cost, and environmental pollution is low.
Detailed description of the invention
Embodiment 1
By trialkoxy silane coupling agent (KH570, γ-methacryloxypropyl trimethoxy silane) be flake nano bentonite solid particle (the modification of sodium carbonate sodium bentonite of 25nm with particle diameter, Zhejiang taken from by original soil, thered is provided by Sanding Sci. & Tech. Co., Ltd., Zhejiang) by 10% mass percent mixing, deionized water is added to mixture, the mass ratio of deionized water and flake nano bentonite solid particle is 10: 1, add toluene or absolute ethyl alcohol again, the mass ratio of deionized water and flake nano bentonite solid particle is 30: 1, thermal agitation is added 6 hours at 75 DEG C, leave standstill and be cooled to room temperature, obtain modified alta-mud suspension, then extracting gained suspension, the decorating film toluene cyclic washing of extracting gained.Decorating film after washing crosses 200 mesh sieves after drying grinding, gained residue on sieve (in non-sieve residue) is scattered in deionized water (resistance is greater than 18M Ω cm), stir, obtaining flake nano modified alta-mud mass fraction is the water slurry of 1%, regulate water slurry pH value to 6 with the hydrochloric acid of 0.1mol/L, obtain good dispersion after stirring, without the flake nano modified alta-mud solid particle water slurry precipitated.
Atoleine is mixed with cetyl alkenyl succinic anhydride, stirs, obtain the mixing application fluid that atoleine mass fraction is 30%.Again flake nano modified alta-mud solid particle water slurry is mixed according to 1: 1 volume ratio with mixing application fluid, mixture high-speed shearing emulsion machine (FLUKO/FA35 high-speed shearing emulsion machine, Shanghai Frock Fluid Machinery Manufacture Co., Ltd.) the shear rates of 6000 revs/min emulsified 3 minutes, the obtained homogeneous milky efficient paper-making sizing agent emulsion by the emulsification of chip solid particle.Emulsion droplet particle mean size is 4.5 μm, and emulsion centrifugal under centrifuge (rotating speed 4000 revs/min) 5 minutes is unchanged, and separate out without phase body, without demulsifying phenomenon, emulsion is placed without significant change after 1 day, and stability of emulsion is good.The solid particle interfacial film that its main stable mechanism is formed in the Irreversible Adsorption at oil-water interfaces place for utilizing nano-sheet solid particle; play the effect intercepting and protect emulsion droplet; thus ASA stable emulsifying is formed pik crop type emulsion, this emulsion has high stability.Wherein atoleine has the multiple action reducing fluid polarity, assist emulsification, improve sizability.
Obtained sizing agent emulsion is carried out plasm-glue-blending, and by the square handshcet former copy paper of laboratory PTI, page is dried in FI119 type electrothermal drying cylinder, quantitative 60g/m
2.Slurry is 100% hardwood pulp, alkenyl succinic anhydride consumption 0.15% (mass percent to oven dry stock), cationic polyacrylamide (CPAM, molecular weight 8,000,000, Ciba provides) consumption 0.03% (to oven dry stock mass percent), addition of aluminum sulfate 1% (to oven dry stock mass percent).Recording sizing degree is 132 seconds (degree of sizing is measured according to GB/T5405-2002), and paper sizing degree is good.Preparation method's emulsifying process of prepared pickering emulsion type paper-making sizing agent emulsion simply, does not need to add the emulsion that ASA (alkenyl succinic anhydride) just can be emulsified into high stable by any conventional surfactant and complex polyelectrolyte particle, effectively can reduce production cost, the problems such as environmental protect pollution.
Embodiment 2
By trialkoxy silane coupling agent (KH550, γ-chloropropyl triethoxysilane) be flake nano bentonite solid particle (the calcium carbonate modified calcium-base bentonite of 50nm with particle diameter, Zhejiang taken from by original soil, thered is provided by Sanding Sci. & Tech. Co., Ltd., Zhejiang) by 5% mass percent mixing, deionized water is added to mixture, deionized water consumption is 20: 1 relative to the mass ratio of bentonite solid particle, add toluene or absolute ethyl alcohol again, consumption is 60: 1 relative to the mass ratio of bentonite solid particle, thermal agitation is added 8 hours at 75 DEG C, leave standstill and be cooled to room temperature, obtain modified alta-mud suspension, then extracting gained suspension, the decorating film toluene of extracting gained or ethanol cyclic washing.Decorating film after washing crosses 200 mesh sieves after drying grinding, gained residue on sieve is scattered in deionized water, stir, obtaining flake nano modified alta-mud mass fraction is the water slurry of 5%, regulate water slurry pH value to 7 with the acetum of 0.1mol/L, obtain good dispersion after stirring, without the flake nano modified alta-mud solid particle water slurry precipitated.
Atoleine is mixed with octadecyl alkenyl succinic anhydride, stirs, obtain the mixing application fluid that atoleine mass fraction is 20%.Flake nano modified alta-mud solid particle water slurry is mixed according to 1: 3 volume ratio with mixing application fluid, mixture high-speed shearing emulsion machine (FLUKO/FA25 high-speed shearing emulsion machine, Shanghai Frock Fluid Machinery Manufacture Co., Ltd.) the shear rates of 8000 revs/min emulsified 5 minutes, the obtained homogeneous milky efficient paper-making sizing agent emulsion by the emulsification of chip solid particle.Emulsion droplet particle mean size is 4.2 μm, and emulsion centrifugal under centrifuge (rotating speed 4000 revs/min) 10 minutes is unchanged, and separate out without phase body, without demulsifying phenomenon, emulsion is placed without significant change after 1 day, and gained stability of emulsion is good.
Obtained sizing agent emulsion is carried out plasm-glue-blending, and by the square handshcet former copy paper of laboratory PTI, page is dried in FI119 type electrothermal drying cylinder, and page is dried in FI119 type electrothermal drying cylinder, quantitative 60g/m
2.Slurry is 100% hardwood pulp, alkenyl succinic anhydride consumption 0.2% (mass percent to oven dry stock), cationic polyacrylamide (CPAM, molecular weight 8,000,000, Ciba provides) consumption 0.03% (mass percent to oven dry stock), addition of aluminum sulfate 1% (mass percent to oven dry stock).Recording sizing degree is 212 seconds (degree of sizing is measured according to GB/T5405-2002), and paper sizing degree is good.
Embodiment 3
By trialkoxy silane coupling agent (KH560, γ-glycidyl ether oxygen propyl trimethoxy silicane) and particle diameter be 100nm flake nano bentonite (magnesium base modified alta-mud, Liaoning taken from by original soil, by
eastern produce sale Co., Ltd is moistened in Chaoyangthere is provided) solid particle by 2% mass percent mixing, deionized water is added to mixture, deionized water consumption is 15: 1 relative to the mass ratio of bentonite solid particle, add toluene or absolute ethyl alcohol again, consumption is 50: 1 relative to the mass ratio of bentonite solid particle, adds thermal agitation 5 hours at 75 DEG C, leave standstill and be cooled to room temperature, obtain modified alta-mud suspension, then extracting gained suspension, the decorating film toluene of extracting gained or ethanol cyclic washing.Decorating film after washing crosses 200 mesh sieves after drying grinding, gained residue on sieve is scattered in deionized water, stir, obtaining flake nano modified alta-mud mass fraction is the water slurry of 5%, regulate water slurry pH value to 5 with the citric acid solution of 0.1mol/L, obtain good dispersion after stirring, without the flake nano modified alta-mud solid particle water slurry precipitated.
Atoleine is mixed with eicosyl alkenyl succinic anhydride, stirs, obtain the mixing application fluid that atoleine mass fraction is 50%.Flake nano modified alta-mud solid particle water slurry is mixed according to 2: 1 volume ratios with mixing application fluid, mixture high-speed shearing emulsion machine (FLUKO/FM200 high-speed shearing emulsion machine, Shanghai Frock Fluid Machinery Manufacture Co., Ltd.) the shear rates of 10000 revs/min emulsified 7 minutes, the obtained homogeneous milky efficient paper-making sizing agent emulsion by the emulsification of chip solid particle.Emulsion droplet particle mean size is 5 μm, and emulsion centrifugal under centrifuge (rotating speed 4000 revs/min) 10 minutes is unchanged, and separate out without phase body, without demulsifying phenomenon, emulsion is placed without significant change after 1 day, and stability of emulsion is good.
Obtained sizing agent emulsion is carried out plasm-glue-blending, and by the square handshcet former copy paper of laboratory PTI, page is dried in FI119 type electrothermal drying cylinder, and page is dried in FI119 type electrothermal drying cylinder, quantitative 60g/m2.Slurry is 100% hardwood pulp, alkenyl succinic anhydride consumption 0.5% (mass percent to oven dry stock), cationic polyacrylamide (CPAM, molecular weight 8,000,000, Ciba provides) consumption 0.03% (mass percent to oven dry stock), addition of aluminum sulfate 1% (mass percent to oven dry stock).Record sizing degree 278 seconds (degree of sizing is measured according to GB/T5405-2002), paper sizing degree is good.
Embodiment 4
By dialkoxy silicane coupling agent (KH161, methylvinyldimethoxysilane) be flake nano bentonite (the ammonium organobentonite of 50nm with particle diameter, Zhejiang taken from by original soil, thered is provided by Sanding Sci. & Tech. Co., Ltd., Zhejiang) solid particle by 8% mass percent mixing, deionized water is added to mixture, deionized water consumption is 20: 1 relative to the mass ratio of bentonite solid particle, add toluene or absolute ethyl alcohol again, consumption is 60: 1 relative to the mass ratio of bentonite solid particle, thermal agitation is added 6 hours at 75 DEG C, leave standstill and be cooled to room temperature, obtain modified alta-mud suspension, then extracting gained suspension, the decorating film toluene of extracting gained or ethanol cyclic washing.Decorating film after washing crosses 200 mesh sieves after drying grinding, gained residue on sieve is scattered in deionized water, stir, obtaining flake nano modified alta-mud mass fraction is the water slurry of 3%, regulate water slurry pH value to 6 with the uric acid solution of 0.5mol/L, obtain good dispersion after stirring, without the flake nano modified alta-mud solid particle water slurry precipitated.
By atoleine and 16 ~ eicosyl alkenyl succinic anhydride (by percentage to the quality, its by 15% cetyl alkenyl succinic anhydride, the heptadecyl alkenyl succinic anhydride of 10%, the octadecyl alkenyl succinic anhydride of 45%, the nonadecyl alkenyl succinic anhydride of 5%, the eicosyl alkenyl succinic anhydride composition of 25%) mixing, stir, obtain the mixing application fluid that atoleine mass fraction is 40%.Flake nano modified alta-mud solid particle water slurry is mixed according to 1: 7 volume ratio with mixing application fluid, mixture high-speed shearing emulsion machine (FLUKO/FA25 high-speed shearing emulsion machine, Shanghai Frock Fluid Machinery Manufacture Co., Ltd.) the shear rates of 15000 revs/min emulsified 5 minutes, the obtained homogeneous milky efficient paper-making sizing agent emulsion by the emulsification of chip solid particle.Emulsion droplet particle mean size is 3.5 μm, and emulsion centrifugal under centrifuge (rotating speed 4000 revs/min) 10 minutes is unchanged, and separate out without phase body, without demulsifying phenomenon, emulsion is placed without significant change after 1 day, and stability of emulsion is good.
Obtained sizing agent emulsion is carried out plasm-glue-blending, and by the square handshcet former copy paper of laboratory PTI, page is dried in FI119 type electrothermal drying cylinder, and page is dried in FI119 type electrothermal drying cylinder, quantitative 60g/m
2.Slurry is 100% hardwood pulp, alkenyl succinic anhydride consumption 0.2% (mass percent to oven dry stock), cationic polyacrylamide (CPAM, molecular weight 8,000,000, Ciba provides) consumption 0.03% (mass percent to oven dry stock), addition of aluminum sulfate 1% (mass percent to oven dry stock).Recording sizing degree is 334 seconds (degree of sizing is measured according to GB/T5405-2002), and paper sizing degree is good.
Embodiment 5
By dialkoxy silicane coupling agent (KH602, N-β-(aminoethyl)-γ-aminopropyltriethoxy dimethoxy silane) be flake nano bentonite (the hectorite bentonite of 25nm with particle diameter, Jiang Lai bio tech ltd, Shanghai provides) solid particle by 15% mass percent mixing, deionized water is added to mixture, deionized water consumption is 25: 1 relative to the mass ratio of bentonite solid particle, add toluene or absolute ethyl alcohol again, consumption is 70: 1 relative to the mass ratio of bentonite solid particle, thermal agitation is added 5 hours at 75 DEG C, leave standstill and be cooled to room temperature, obtain modified alta-mud suspension, then extracting gained suspension, the decorating film toluene of extracting gained or ethanol cyclic washing.Decorating film after washing crosses 200 mesh sieves after drying grinding, gained residue on sieve is scattered in deionized water, stir, obtaining flake nano modified alta-mud mass fraction is the water slurry of 2%, regulate water slurry pH value to 4.5 with the hydrochloric acid of 0.1mol/L, obtain good dispersion after stirring, without the flake nano modified alta-mud solid particle water slurry precipitated.
By atoleine and 16,18, eicosyl alkenyl succinic anhydride (by percentage to the quality, its by 15% hexadecylene base succinyl oxide, the octadecenyl succinic anhydride of 75%, the icosa alkene base succinyl oxide composition of 10%) mixing, stir, obtain the mixing application fluid that atoleine mass fraction is 20%.Flake nano modified alta-mud solid particle water slurry is mixed according to 4: 5 volume ratios with mixing application fluid, mixture high-speed shearing emulsion machine (FLUKO/FA35 high-speed shearing emulsion machine, Shanghai Frock Fluid Machinery Manufacture Co., Ltd.) the shear rates of 6000 revs/min emulsified 5 minutes, the obtained homogeneous milky efficient paper-making sizing agent emulsion by the emulsification of chip solid particle.Emulsion droplet particle mean size is 3 μm, and emulsion centrifugal under centrifuge (rotating speed 4000 revs/min) 10 minutes is unchanged, and separate out without phase body, without demulsifying phenomenon, emulsion is placed without significant change after 1 day, and stability of emulsion is good.Main stable emulsifying mechanism is the solid particle interfacial film utilizing cation nanometer solid particle to be formed in the Irreversible Adsorption at oil-water interfaces place, intercepts and protection emulsion droplet, thus ASA stable emulsifying is formed the pik crop type emulsion with superregulated property.Wherein atoleine has the multiple action reducing fluid polarity, assist emulsification, improve sizability.
Obtained sizing agent emulsion is carried out plasm-glue-blending, and by the square handshcet former copy paper of laboratory PTI, page is dried in FI119 type electrothermal drying cylinder, and page is dried in FI119 type electrothermal drying cylinder, quantitative 60g/m
2.Slurry is 100% hardwood pulp, alkenyl succinic anhydride consumption 0.5% (mass percent to oven dry stock), cationic polyacrylamide (CPAM, molecular weight 8,000,000, Ciba provides) consumption 0.03% (mass percent to oven dry stock), addition of aluminum sulfate 1% (mass percent to oven dry stock).Recording sizing degree is 378 seconds (degree of sizing is measured according to GB/T5405-2002), and paper sizing degree is good.Preparation method's emulsifying process of prepared pickering emulsion type paper-making sizing agent emulsion simply, does not need to add the emulsion that ASA (alkenyl succinic anhydride) just can be emulsified into high stable by any conventional surfactant and complex polyelectrolyte particle, and effectively reduce production cost, improve the problems such as the discharge of pollutant.
Claims (1)
1. a preparation method for the glue used in paper-making of chip solid particle emulsification, is characterized in that:
By dialkoxy silicane coupling agent N ?β ?(aminoethyl) ?γ ?aminopropyltriethoxy dimethoxy silane and particle diameter be 25nm flake nano bentonite solid particle mixes by the mass ratio of 15:100, deionized water is added to mixture, deionized water consumption is 25:1 relative to the mass ratio of bentonite solid particle, add toluene or absolute ethyl alcohol again, consumption is 70:1 relative to the mass ratio of bentonite solid particle, thermal agitation is added 5 hours at 75 DEG C, leave standstill and be cooled to room temperature, obtain modified alta-mud suspension, then extracting gained suspension, the decorating film toluene of extracting gained or ethanol cyclic washing, decorating film after washing crosses 200 mesh sieves after drying grinding, gained residue on sieve is scattered in deionized water, stir, obtaining flake nano modified alta-mud mass fraction is the water slurry of 2%, regulate water slurry pH value to 4.5 with the hydrochloric acid of 0.1mol/L, obtain good dispersion after stirring, without the flake nano modified alta-mud solid particle water slurry precipitated, flake nano bentonite is hectorite bentonite,
By atoleine and 16,18, eicosyl alkenyl succinic anhydride mixes, stir, obtain the mixing application fluid that atoleine mass fraction is 20%; Flake nano modified alta-mud solid particle water slurry is mixed according to 4:5 volume ratio with mixing application fluid, mixture high-speed shearing emulsion machine emulsified 5 minutes the shear rate of 6000 revs/min, the obtained homogeneous milky paper-making sizing agent emulsion by the emulsification of chip solid particle;
By percentage to the quality, 16,18, eicosyl alkenyl succinic anhydride by 15% hexadecylene base succinyl oxide, the octadecenyl succinic anhydride of 75% and 10% icosa alkene base succinyl oxide composition;
High-speed shearing emulsion machine is FLUKO/FA35 high-speed shearing emulsion machine.
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| CN112796157B (en) * | 2021-01-12 | 2022-09-23 | 齐鲁工业大学 | AKD/ASA composite papermaking sizing agent and preparation method and application thereof |
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| CN114395387B (en) * | 2022-03-15 | 2022-12-20 | 西南石油大学 | Water-in-oil in-situ emulsified nano oil displacement agent with high phase transition point and application thereof |
| CN116042041B (en) * | 2023-03-07 | 2023-11-10 | 江苏艾肯复元新材料技术有限公司 | Thermochromic water-based nano coating and preparation method thereof |
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