CN108677604A - The technique that paper sizing agent is prepared by soybean protein based on low temperature plasma method - Google Patents
The technique that paper sizing agent is prepared by soybean protein based on low temperature plasma method Download PDFInfo
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- CN108677604A CN108677604A CN201810393648.8A CN201810393648A CN108677604A CN 108677604 A CN108677604 A CN 108677604A CN 201810393648 A CN201810393648 A CN 201810393648A CN 108677604 A CN108677604 A CN 108677604A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H1/00—Macromolecular products derived from proteins
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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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
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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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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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
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- Polymers & Plastics (AREA)
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- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Abstract
The invention discloses a kind of techniques preparing paper sizing agent by soybean protein based on low temperature plasma method, are related to paper sizing agent processing technique field, include the following steps：(1) prepared by Low Temperature Plasma Treating, (2) hot-pressing processing and micronizing, (3) auxiliary material, prepared by (4) sizing agent.The present invention makes soybean protein form tridimensional network under conditions of albuminous degeneration does not occur using low temperature plasma method, and then improves the adhesive strength of soybean protein；Enhance the gluing stability of soybean protein simultaneously, make the adhesive layer formed after solidification that there is extremely strong adhesive force on paper, to avoid after adhesive layer is completely dried due to external force friction acts on peeling off phenomenon.
Description
Technical field：
The present invention relates to paper sizing agent processing technique fields, and in particular to one kind is based on low temperature plasma method by soybean
The technique that albumen prepares paper sizing agent.
Background technology：
China's raw material of papermaking fiber structure is different from other countries, and the pulp fiber used in paper-making process is shorter, miscellaneous
The type that cell is more, various auxiliary chemicals use is also more.So slurry in using sizing agent effect it is bad, and dosage compared with
Greatly, very high to the stability requirement of sizing agent, and because internal sizing agent be difficult to detach, caused by pollute it is also more difficult to control.
In recent years, especially the production of boxboard and fluting medium has used Cypres to substitute plasm-glue-blending mostly.
Ring crush intensity and surface strength can directly be improved using top sizing.Currently, commercial surface sizing agent has styrene-maleic acid
Anhydride polymer, styrene acrylic polymer aqueous solution, styrene-acrylate polymer lotion, soluble polyurethane etc.,
But these sizing agents need organic solvent or surfactant in preparation process, and when application can generate environment pollution, and
Production technology is complicated, of high cost.
Invention content：
Technical problem to be solved by the present invention lies in provide a kind of raw material be easy to get, short preparation period based on low temperature etc. from
Daughter method is prepared the technique of paper sizing agent by soybean protein, and the use feature of environmental protection of made paper sizing agent is strong and performance is excellent
It is different.
The technical problems to be solved by the invention are realized using technical solution below：
The technique for being prepared paper sizing agent by soybean protein based on low temperature plasma method, is included the following steps：
(1) Low Temperature Plasma Treating：Soyabean protein powder is put into the vacuum chamber of plasma reactor, is evacuated to
Then 1Pa leads to nitrogen to vacuum chamber pressure and reaches 10Pa, temperature control is at 50-55 DEG C, discharge power 300-450W, type discharge
Electric time 5-10min takes out soyabean protein powder after stopping electric discharge；
(2) hot-pressing processing and micronizing：Into the soyabean protein powder after Low Temperature Plasma Treating plus water makes water content
Reach 50-55wt%, stir evenly, then the hot pressing 5-10min at pressure 1-3MPa, 50-55 DEG C of temperature, gained lotion is natural
It is cooled to room temperature, is re-fed into freeze drier, micro mist is made to get modified soybean egg through micronizer in dry obtained solid
White powder；
(3) prepared by auxiliary material：By poly(N-isopropylacrylamide), super fine magnesia, PEG-60 rilanit specials and poly- day
L-aminobutanedioic acid mixes；
(4) prepared by sizing agent：Made modified soy-bean protein powder and auxiliary material is added in Xiang Shuizhong, stirs evenly, viscosity is in 100-
200mPa.s is to get sizing agent.
The soyabean protein powder, poly(N-isopropylacrylamide), super fine magnesia, PEG-60 rilanit specials and poly- day
The mass ratio of L-aminobutanedioic acid is 50:1-10:1-10:1-10:0.5-5.
The soyabean protein powder is pre-processed before Low Temperature Plasma Treating, and pre-treatment step is：First to soybean
In albumen powder plus water makes water content reach 50-55wt%, is sufficiently stirred and is placed on sealing and standing 3-5h in 3-8 DEG C of environment, then adds
Enter Coconut Fatty Acid Monoethanolamide, stir evenly, 50-55 DEG C of insulated and stirred 15- is then warming up to the heating rate of 3-5 DEG C/min
30min, and it is transferred to sealing and standing 3-5h in 3-8 DEG C of environment again, clear-cutting forestland to room temperature completes the pre- place of soyabean protein powder
Reason.
The soyabean protein powder, Coconut Fatty Acid Monoethanolamide mass ratio be 50:1-10.
It also added a nanometer rubber powder in the auxiliary material, the mass ratio of nanometer rubber powder and soyabean protein powder is 0.5-5:50.
The nanometer rubber powder is by nanomete talc powder, anionic polyacrylamide, allyl polyglycol and trihydroxy methyl third
Alkane triglycidyl ether is made, and preparation process is：It is molten after first mixing anionic polyacrylamide and allyl polyglycol
Yu Shuizhong, and it is heated to reflux state insulated and stirred, nanomete talc powder and trihydroxymethylpropanyltri diglycidyl ether are added, after
Continuous reflux insulated and stirred 15-30min, gained mixture are sent into spray dryer, and dry gained particle is through ultramicro grinding mechanism
At micro mist, the powder of grain size 20-30nm is most made through nano-level grinder afterwards.
The nanomete talc powder, anionic polyacrylamide, allyl polyglycol and trimethylolpropane tris shrink sweet
The mass ratio of oily ether is 20:1-5:1-5:0.5-3.
The molecular weight of the anionic polyacrylamide is in 800-1200 ten thousand.
The hydroxyl value of the allyl polyglycol is 50-55mgKOH/g.
The beneficial effects of the invention are as follows：
(1) present invention is by the temperature inversion processing to soyabean protein powder, and assists using Coconut Fatty Acid Monoethanolamide as in advance
Inorganic agent, to assign the good low viscosity flexibility of soybean protein slurry, (the flexible imparting of low viscosity can improve made
The performance of sizing agent), while the molecular structure of soybean protein is activated in favor of subsequent Low Temperature Plasma Treating；
(2) present invention makes soybean protein form three-dimensional under conditions of albuminous degeneration does not occur using low temperature plasma method
Reticular structure, and then improve the adhesive strength of soybean protein；The gluing stability for enhancing soybean protein simultaneously, forms after making solidification
Adhesive layer on paper have extremely strong adhesive force, to avoid after adhesive layer is completely dried due to external force friction acts on
Peeling；
(3) present invention makes the flexibility of soybean protein further be enhanced by hot-pressing processing, and then improves soybean egg
White adhesive strength；
(4) present invention enhances the mechanical property of made sizing agent by being used cooperatively for auxiliary material, is received particularly by self-control
The addition of rice glue powder further increases the ring crush intensity and surface strength of made sizing agent.
Specific implementation mode：
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Specific embodiment is closed, the present invention is further explained.
Embodiment 1
(1) Low Temperature Plasma Treating：50g soyabean protein powders are put into the vacuum chamber of plasma reactor, are taken out true
Then sky leads to nitrogen to vacuum chamber pressure and reaches 10Pa to 1Pa, temperature control is at 50-55 DEG C, discharge power 450W, type discharge
Electric time 5min takes out soyabean protein powder after stopping electric discharge；
(2) hot-pressing processing and micronizing：Into the soyabean protein powder after Low Temperature Plasma Treating plus water makes water content
Reach 50-55wt%, stir evenly, then the hot pressing 5min at pressure 1.5-2MPa, 50-55 DEG C of temperature, gained lotion is natural
It is cooled to room temperature, is re-fed into freeze drier, micro mist is made to get modified soybean egg through micronizer in dry obtained solid
White powder；
(3) prepared by auxiliary material：By 5g poly(N-isopropylacrylamide), 5g super fine magnesias, 2g PEG-60 rilanit specials
It is mixed with 0.5g poly-aspartic-acids；
(4) prepared by sizing agent：Made modified soy-bean protein powder and auxiliary material is added in Xiang Shuizhong, stirs evenly, viscosity exists
135mPa.s is to get sizing agent.
Embodiment 2
(1) Low Temperature Plasma Treating：50g soyabean protein powders are put into the vacuum chamber of plasma reactor, are taken out true
Then sky leads to nitrogen to vacuum chamber pressure and reaches 10Pa to 1Pa, temperature control is at 50-55 DEG C, discharge power 450W, type discharge
Electric time 5min takes out soyabean protein powder after stopping electric discharge；
(2) hot-pressing processing and micronizing：Into the soyabean protein powder after Low Temperature Plasma Treating plus water makes water content
Reach 50-55wt%, stir evenly, then the hot pressing 5min at pressure 1.5-2MPa, 50-55 DEG C of temperature, gained lotion is natural
It is cooled to room temperature, is re-fed into freeze drier, micro mist is made to get modified soybean egg through micronizer in dry obtained solid
White powder；
(3) prepared by auxiliary material：By 8g poly(N-isopropylacrylamide), 3g super fine magnesias, 3g PEG-60 rilanit specials
It is mixed with 0.5g poly-aspartic-acids；
(4) prepared by sizing agent：Made modified soy-bean protein powder and auxiliary material is added in Xiang Shuizhong, stirs evenly, viscosity exists
142mPa.s is to get sizing agent.
Embodiment 3
(1) Low Temperature Plasma Treating：50g soyabean protein powders are put into the vacuum chamber of plasma reactor, are taken out true
Then sky leads to nitrogen to vacuum chamber pressure and reaches 10Pa to 1Pa, temperature control is at 50-55 DEG C, discharge power 450W, type discharge
Electric time 5min takes out soyabean protein powder after stopping electric discharge；
(2) hot-pressing processing and micronizing：Into the soyabean protein powder after Low Temperature Plasma Treating plus water makes water content
Reach 50-55wt%, stir evenly, then the hot pressing 5min at pressure 1.5-2MPa, 50-55 DEG C of temperature, gained lotion is natural
It is cooled to room temperature, is re-fed into freeze drier, micro mist is made to get modified soybean egg through micronizer in dry obtained solid
White powder；
(3) prepared by auxiliary material：By 8g poly(N-isopropylacrylamide), 3g super fine magnesias, 3g PEG-60 hydrogenated castors
Oil, 3g nanometers of rubber powders and 0.5g poly-aspartic-acids mix；
(4) prepared by sizing agent：Made modified soy-bean protein powder and auxiliary material is added in Xiang Shuizhong, stirs evenly, viscosity exists
142mPa.s is to get sizing agent.
The preparation of nanometer rubber powder：It is dissolved in water after first mixing 5g anionic polyacrylamide and 3g allyl polyglycols
In, and it is heated to reflux state insulated and stirred, 20g nanomete talc powders and 1g trihydroxymethylpropanyltri diglycidyl ethers are added,
Continue the insulated and stirred 30min that flows back, gained mixture is sent into spray dryer, and dry gained particle is made through micronizer
The powder of grain size 20-30nm is most made in micro mist through nano-level grinder afterwards.
Wherein, for the molecular weight of anionic polyacrylamide 10,000,000, the hydroxyl value of allyl polyglycol is 50-
55mgKOH/g。
Embodiment 4
(1) it pre-processes：First add water that water content is made to reach 50-55wt% into 50g soyabean protein powders, is sufficiently stirred and is placed on
Sealing and standing 5h in 3-8 DEG C of environment, adds 2.5g Coconut Fatty Acid Monoethanolamides, stirs evenly, then with the liter of 3-5 DEG C/min
Warm speed is warming up to 50-55 DEG C of insulated and stirred 30min, and is transferred to sealing and standing 3h in 3-8 DEG C of environment, clear-cutting forestland to room again
Temperature completes the pretreatment of soyabean protein powder；
(2) Low Temperature Plasma Treating：Pretreated soyabean protein powder is put into the vacuum chamber of plasma reactor
In, it is evacuated to 1Pa, then leads to nitrogen to vacuum chamber pressure and reaches 10Pa, temperature is controlled at 50-55 DEG C, discharge power 450W,
Continuous discharging time 5min takes out soyabean protein powder after stopping electric discharge；
(3) hot-pressing processing and micronizing：Into the soyabean protein powder after Low Temperature Plasma Treating plus water makes water content
Reach 50-55wt%, stir evenly, then the hot pressing 5min at pressure 1.5-2MPa, 50-55 DEG C of temperature, gained lotion is natural
It is cooled to room temperature, is re-fed into freeze drier, micro mist is made to get modified soybean egg through micronizer in dry obtained solid
White powder；
(4) prepared by auxiliary material：By 8g poly(N-isopropylacrylamide), 3g super fine magnesias, 3g PEG-60 rilanit specials
It is mixed with 0.5g poly-aspartic-acids；
(5) prepared by sizing agent：Made modified soy-bean protein powder and auxiliary material is added in Xiang Shuizhong, stirs evenly, viscosity exists
142mPa.s is to get sizing agent.
Embodiment 5
(1) it pre-processes：First add water that water content is made to reach 50-55wt% into 50g soyabean protein powders, is sufficiently stirred and is placed on
Sealing and standing 5h in 3-8 DEG C of environment, adds 2.5g Coconut Fatty Acid Monoethanolamides, stirs evenly, then with the liter of 3-5 DEG C/min
Warm speed is warming up to 50-55 DEG C of insulated and stirred 30min, and is transferred to sealing and standing 3h in 3-8 DEG C of environment, clear-cutting forestland to room again
Temperature completes the pretreatment of soyabean protein powder；
(2) Low Temperature Plasma Treating：Pretreated soyabean protein powder is put into the vacuum chamber of plasma reactor
In, it is evacuated to 1Pa, then leads to nitrogen to vacuum chamber pressure and reaches 10Pa, temperature is controlled at 50-55 DEG C, discharge power 450W,
Continuous discharging time 5min takes out soyabean protein powder after stopping electric discharge；
(3) hot-pressing processing and micronizing：Into the soyabean protein powder after Low Temperature Plasma Treating plus water makes water content
Reach 50-55wt%, stir evenly, then the hot pressing 5min at pressure 1.5-2MPa, 50-55 DEG C of temperature, gained lotion is natural
It is cooled to room temperature, is re-fed into freeze drier, micro mist is made to get modified soybean egg through micronizer in dry obtained solid
White powder；
(4) prepared by auxiliary material：By 8g poly(N-isopropylacrylamide), 3g super fine magnesias, 3g PEG-60 hydrogenated castors
Oil, 3g nanometers of rubber powders and 0.5g poly-aspartic-acids mix；
(5) prepared by sizing agent：Made modified soy-bean protein powder and auxiliary material is added in Xiang Shuizhong, stirs evenly, viscosity exists
142mPa.s is to get sizing agent.
The preparation of nanometer rubber powder：It is dissolved in water after first mixing 5g anionic polyacrylamide and 3g allyl polyglycols
In, and it is heated to reflux state insulated and stirred, 20g nanomete talc powders and 1g trihydroxymethylpropanyltri diglycidyl ethers are added,
Continue the insulated and stirred 30min that flows back, gained mixture is sent into spray dryer, and dry gained particle is made through micronizer
The powder of grain size 20-30nm is most made in micro mist through nano-level grinder afterwards.
Wherein, for the molecular weight of anionic polyacrylamide 10,000,000, the hydroxyl value of allyl polyglycol is 50-
55mgKOH/g。
Reference examples 1
(1) Low Temperature Plasma Treating：50g soyabean protein powders are put into the vacuum chamber of plasma reactor, are taken out true
Then sky leads to nitrogen to vacuum chamber pressure and reaches 10Pa to 1Pa, temperature control is at 50-55 DEG C, discharge power 450W, type discharge
Electric time 5min takes out soyabean protein powder after stopping electric discharge；
(2) hot-pressing processing and micronizing：Into the soyabean protein powder after Low Temperature Plasma Treating plus water makes water content
Reach 50-55wt%, stir evenly, then the hot pressing 5min at pressure 1.5-2MPa, 50-55 DEG C of temperature, gained lotion is natural
It is cooled to room temperature, is re-fed into freeze drier, micro mist is made to get modified soybean egg through micronizer in dry obtained solid
White powder；
(3) prepared by auxiliary material：By 8g poly(N-isopropylacrylamide), 3g super fine magnesias and 3g PEG-60 hydrogenated castors
Oil mixes；
(4) prepared by sizing agent：Made modified soy-bean protein powder and auxiliary material is added in Xiang Shuizhong, stirs evenly, viscosity exists
142mPa.s is to get sizing agent.
Reference examples 2
(1) Low Temperature Plasma Treating：50g soyabean protein powders are put into the vacuum chamber of plasma reactor, are taken out true
Then sky leads to nitrogen to vacuum chamber pressure and reaches 10Pa to 1Pa, temperature control is at 50-55 DEG C, discharge power 450W, type discharge
Electric time 5min takes out soyabean protein powder after stopping electric discharge；
(2) hot-pressing processing and micronizing：Into the soyabean protein powder after Low Temperature Plasma Treating plus water makes water content
Reach 50-55wt%, stir evenly, then the hot pressing 5min at pressure 1.5-2MPa, 50-55 DEG C of temperature, gained lotion is natural
It is cooled to room temperature, is re-fed into freeze drier, micro mist is made to get modified soybean egg through micronizer in dry obtained solid
White powder；
(3) prepared by auxiliary material：It is mixed by 8g poly(N-isopropylacrylamide), 3g super fine magnesias and 0.5g poly-aspartic-acids
It closes；
(4) prepared by sizing agent：Made modified soy-bean protein powder and auxiliary material is added in Xiang Shuizhong, stirs evenly, viscosity exists
142mPa.s is to get sizing agent.
Reference examples 3
(1) Low Temperature Plasma Treating：50g soyabean protein powders are put into the vacuum chamber of plasma reactor, are taken out true
Then sky leads to nitrogen to vacuum chamber pressure and reaches 10Pa to 1Pa, temperature control is at 50-55 DEG C, discharge power 450W, type discharge
Electric time 5min takes out soyabean protein powder after stopping electric discharge；
(2) hot-pressing processing and micronizing：Into the soyabean protein powder after Low Temperature Plasma Treating plus water makes water content
Reach 50-55wt%, stir evenly, then the hot pressing 5min at pressure 1.5-2MPa, 50-55 DEG C of temperature, gained lotion is natural
It is cooled to room temperature, is re-fed into freeze drier, micro mist is made to get modified soybean egg through micronizer in dry obtained solid
White powder；
(3) prepared by auxiliary material：It is mixed by 3g super fine magnesias, 3g PEG-60 rilanit specials and 0.5g poly-aspartic-acids
It forms；
(4) prepared by sizing agent：Made modified soy-bean protein powder and auxiliary material is added in Xiang Shuizhong, stirs evenly, viscosity exists
142mPa.s is to get sizing agent.
Reference examples 4
(1) Low Temperature Plasma Treating：50g soyabean protein powders are put into the vacuum chamber of plasma reactor, are taken out true
Then sky leads to nitrogen to vacuum chamber pressure and reaches 10Pa to 1Pa, temperature control is at 50-55 DEG C, discharge power 450W, type discharge
Electric time 5min takes out soyabean protein powder after stopping electric discharge；
(2) it is micronized：Into the soyabean protein powder after Low Temperature Plasma Treating plus water makes water content reach 50-
55wt% is stirred evenly, and is then fed into freeze drier, and micro mist is made to get changing through micronizer in dry obtained solid
Property soyabean protein powder；
(3) prepared by auxiliary material：By 8g poly(N-isopropylacrylamide), 3g super fine magnesias, 3g PEG-60 rilanit specials
It is mixed with 0.5g poly-aspartic-acids；
(4) prepared by sizing agent：Made modified soy-bean protein powder and auxiliary material is added in Xiang Shuizhong, stirs evenly, viscosity exists
142mPa.s is to get sizing agent.
Reference examples 5
(1) hot-pressing processing and micronizing：Into 50g soyabean protein powders plus water makes water content reach 50-55wt%, and stirring is equal
Even, then the hot pressing 5min at pressure 1.5-2MPa, 50-55 DEG C of temperature, gained lotion cooled to room temperature are re-fed into freezing
In drying machine, micro mist is made to get modified soy-bean protein powder through micronizer in dry obtained solid；
(3) prepared by auxiliary material：By 8g poly(N-isopropylacrylamide), 3g super fine magnesias, 3g PEG-60 rilanit specials
It is mixed with 0.5g poly-aspartic-acids；
(4) prepared by sizing agent：Made modified soy-bean protein powder and auxiliary material is added in Xiang Shuizhong, stirs evenly, viscosity exists
142mPa.s is to get sizing agent.
Embodiment 6
It is arranged and does not add the reference examples 1 of poly-aspartic-acid when prepared by auxiliary material, do not add PEG-60 when prepared by auxiliary material
The reference examples 2 of rilanit special, the reference examples 3 for not adding poly(N-isopropylacrylamide) when prepared by auxiliary material, without heat
Reference examples 4, the reference examples 5 without Low Temperature Plasma Treating for pressing processing.
Be utilized respectively embodiment 1-5, reference examples 1-5 prepares sizing agent, and measure the ring crush intensity and table of made sizing agent
Surface intensity, measurement result are as shown in table 1.
Ring crush intensity measures reference GB/T2679.8-2016 methods, is quantitatively 110g/m during fluting medium test-run a machine2, production
Machine testing under product, sizing agent dosage are 2.87kg/t.
Surface strength measures reference GB/T22365-2008 methods, is quantitatively 70g/m during wood-free paper test-run a machine2, under product
Machine testing, sizing agent dosage are 2.5kg/t.
The performance measurement result of the 1 made sizing agent of the present invention of table
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (9)
1. the technique for preparing paper sizing agent by soybean protein based on low temperature plasma method, which is characterized in that including following step
Suddenly：
(1) Low Temperature Plasma Treating：Soyabean protein powder is put into the vacuum chamber of plasma reactor, 1Pa is evacuated to,
Then lead to nitrogen to vacuum chamber pressure and reach 10Pa, temperature is controlled at 50-55 DEG C, discharge power 300-450W, continuous discharge
Between 5-10min, stop electric discharge after take out soyabean protein powder；
(2) hot-pressing processing and micronizing：Into the soyabean protein powder after Low Temperature Plasma Treating plus water makes water content reach
50-55wt% is stirred evenly, then the hot pressing 5-10min at pressure 1-3MPa, 50-55 DEG C of temperature, gained lotion natural cooling
It to room temperature, is re-fed into freeze drier, micro mist is made to get modified soy-bean protein through micronizer in dry obtained solid
Powder；
(3) prepared by auxiliary material：By poly(N-isopropylacrylamide), super fine magnesia, PEG-60 rilanit specials and poly- lucid asparagus
Propylhomoserin mixes；
(4) prepared by sizing agent：Made modified soy-bean protein powder and auxiliary material is added in Xiang Shuizhong, stirs evenly, viscosity is in 100-
200mPa.s is to get sizing agent.
2. the technique according to claim 1 for preparing paper sizing agent by soybean protein based on low temperature plasma method,
It is characterized in that：The soyabean protein powder, poly(N-isopropylacrylamide), super fine magnesia, PEG-60 rilanit specials and poly-
The mass ratio of asparatate is 50:1-10:1-10:1-10:0.5-5.
3. the technique according to claim 1 for preparing paper sizing agent by soybean protein based on low temperature plasma method,
It is characterized in that：The soyabean protein powder is pre-processed before Low Temperature Plasma Treating, and pre-treatment step is：First to soybean
In albumen powder plus water makes water content reach 50-55wt%, is sufficiently stirred and is placed on sealing and standing 3-5h in 3-8 DEG C of environment, then adds
Enter Coconut Fatty Acid Monoethanolamide, stir evenly, 50-55 DEG C of insulated and stirred 15- is then warming up to the heating rate of 3-5 DEG C/min
30min, and it is transferred to sealing and standing 3-5h in 3-8 DEG C of environment again, clear-cutting forestland to room temperature completes the pre- place of soyabean protein powder
Reason.
4. the technique according to claim 3 for preparing paper sizing agent by soybean protein based on low temperature plasma method,
It is characterized in that：The soyabean protein powder, Coconut Fatty Acid Monoethanolamide mass ratio be 50:1-10.
5. the technique according to claim 1 for preparing paper sizing agent by soybean protein based on low temperature plasma method,
It is characterized in that：It also added a nanometer rubber powder in the auxiliary material, the mass ratio of nanometer rubber powder and soyabean protein powder is 0.5-5:50.
6. the technique according to claim 5 for preparing paper sizing agent by soybean protein based on low temperature plasma method,
It is characterized in that：The nanometer rubber powder is by nanomete talc powder, anionic polyacrylamide, allyl polyglycol and trihydroxy methyl third
Alkane triglycidyl ether is made, and preparation process is：It is molten after first mixing anionic polyacrylamide and allyl polyglycol
Yu Shuizhong, and it is heated to reflux state insulated and stirred, nanomete talc powder and trihydroxymethylpropanyltri diglycidyl ether are added, after
Continuous reflux insulated and stirred 15-30min, gained mixture are sent into spray dryer, and dry gained particle is through ultramicro grinding mechanism
At micro mist, the powder of grain size 20-30nm is most made through nano-level grinder afterwards.
7. the technique according to claim 6 for preparing paper sizing agent by soybean protein based on low temperature plasma method,
It is characterized in that：The nanomete talc powder, anionic polyacrylamide, allyl polyglycol and trimethylolpropane tris shrink sweet
The mass ratio of oily ether is 20:1-5:1-5:0.5-3.
8. the technique according to claim 6 for preparing paper sizing agent by soybean protein based on low temperature plasma method,
It is characterized in that：The molecular weight of the anionic polyacrylamide is in 800-1200 ten thousand.
9. the technique according to claim 6 for preparing paper sizing agent by soybean protein based on low temperature plasma method,
It is characterized in that：The hydroxyl value of the allyl polyglycol is 50-55mgKOH/g.
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| CN114853842A (en) * | 2022-05-18 | 2022-08-05 | 南京财经大学 | Method for continuously modifying isolated soy protein based on gas-conditioning-assisted low-temperature plasma |
| CN114853842B (en) * | 2022-05-18 | 2023-07-18 | 南京财经大学 | Method for continuously modifying isolated soy protein based on modified atmosphere auxiliary low-temperature plasma |
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