CN106906694A - A kind of bagasse base compounded mix, its preparation method and the paper containing the compounded mix - Google Patents
A kind of bagasse base compounded mix, its preparation method and the paper containing the compounded mix Download PDFInfo
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- CN106906694A CN106906694A CN201710021893.1A CN201710021893A CN106906694A CN 106906694 A CN106906694 A CN 106906694A CN 201710021893 A CN201710021893 A CN 201710021893A CN 106906694 A CN106906694 A CN 106906694A
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- acid
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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
- 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
- D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F289/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups C08F251/00 - C08F287/00
Abstract
The invention discloses a kind of bagasse base compounded mix, the bagasse base compounded mix is a kind of compound with core shell structure, wherein using bagasse powder granule as the core of the core shell structure compound, be grafted with bagasse powder granule and coating film containing acrylamide based copolymer as the core shell structure compound shell, the bagasse powder granule is that bagasse is crushed into the particle after 30~200 mesh, and the coating film shell containing acrylamide based copolymer is formed by monomer (a), (b), (c) combined polymerization.
Description
Technical field
The invention belongs to pulp technology for making paper, more particularly to a kind of skill for making papermaking filler with sugar industry production discarded object application
Art.
Background technology
Bagasse is the main discarded object in sugar industry production, is a kind of important renewable resource, with very big comprehensive profit
With value.
In paper production, filler is added toward paper pulp, be greatly improved performance of the paper in terms of some, it is such as impermeable
Lightness, whiteness, smoothness and printability, at the same time it can also improve copy paper speed, reduce quantity of steam, substantially reduce the life of paper
Produce cost.
At present, in paper making process, in terms of technology is filled with, mainly with inorganic mineral filler, related paper
Planting can produce the inorganic mineral filler impurity such as substantial amounts of deinked sludge, substantial amounts of inorganic mineral group during Secondary Fiber Recycling
Divide often will be all simply discarded in the form of landfill, be unfavorable for the sustainable development of ecological environment.Inorganic mineral filler
Application be often also easy to increase paper tightness (for packing board, this trend is unfavorable).
Bagasse key component is cellulose, hemicellulose and lignin etc., quite similar with paper material, at normal temperatures property
Matter is sufficiently stable, and degraded is slowly.If crushed and replaced inorganic mineral filler for paper production, paper can be both reduced
Zhang Midu, can also produce stronger adhesion, and can to a certain extent improve surface strength, the anti-tensile of paper between fiber
Intensity, tearability and internal bond strength, and the recyclability of related paper kind significantly improves, produced nothing during reuse
Machine deinked sludge will greatly reduce, and the bagasse base compounded mix for being reclaimed can be used to burn and produce heat energy, be conducive to protection ring
Border, can also realize recycling for renewable resource, therefore bagasse base compounded mix has certain exploitation in paper industry
With application prospect.
However, because bagasse key component is that cellulose, hemicellulose, lignin, pectin, crude protein and ash grade, sugarcane
There are a large amount of alcoholic extract hydroxyl groups on slag surface, when it is used for papermaking is filled with, though paper strength is high compared with inorganic mineral filler, when it is used to want
Still satisfied effect can not be reached when seeking the paper of higher-strength.
The content of the invention
Instant invention overcomes shortcoming of the prior art, there is provided a kind of new bagasse base compounded mix, this bagasse
Base compounded mix, surface has hydrophily and cationic, is filled with for paper, can reach enhancing, toughness reinforcing and retention higher
Effect.The present invention also provides this kind of preparation method and application of bagasse base compounded mix simultaneously.
For achieving the above object, present invention employs following technical scheme：A kind of bagasse base compounded mix, the sugarcane
Slag base compounded mix is a kind of compound with nucleocapsid structure, wherein using bagasse powder granule as the nucleocapsid structure chemical combination
The core of thing, is grafted with bagasse powder granule and the coating film containing acrylamide based copolymer is used as the nucleocapsid structure compound
Shell, the bagasse powder granule is that bagasse is crushed into the particle after 30~200 mesh, described to contain acrylamide copolymerization
The coating film shell of thing is formed by monomer (a), (b), (c) combined polymerization, wherein：
The monomer (a) is selected from one or two in amide-type polymerisable monomer or unsaturated carboxylic acid class polymerisable monomer
More than mixture, monomer addition is the 0.01~10.0% of bagasse powder granule mass fraction, preferably 0.05%~
7.0%, more preferably 1%~5%.
The monomer (b) is polymerisable monomer with cationic amine or with the polymerizable of quaternized cationic
One or more mixture in monomer, monomer addition is the 0.01~30.0% of monomer (a) mass fraction, excellent
1.0%~20.0% is selected in, more preferably 3.0%~15%.
The monomer (c) is with one or two in 2 or more than 2 crosslinkers monomers or oligomer of vinyl
Mixture above, monomer addition is the 0.01~7.0% of monomer (a) mass fraction, preferably 0.05%~5.0%,
More preferably 0.1%~3%.
Specifically, the amide-type polymerisable monomer of the monomer (a) is selected from acrylamide, Methacrylamide, has
C1-C10Alkylol acrylamides, with C1-C10Hydroxyalkyl methacrylamide in one or more mixing
Thing, preferably acrylamide or Methacrylamide.
Specifically, the unsaturated carboxylic acid class polymerisable monomer of the monomer (a) be with 3 to 8 carbon numbers not
Saturated carboxylic acid, selected from one or more in acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, aconitic acid
Mixture, preferably acrylic acid, itaconic acid, maleic acid.
Specifically, the monomer (b) is selected from DMAA, diallylamine, triallylamine, acrylic acid two
Methylamino ethyl ester, Dimethylaminoethyl Methacrylate, diethylaminoethyl base ethyl ester, dimethyl diallyl chlorination
In ammonium, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, acrylyl oxy-ethyl-trimethyl salmiac one or more
Mixture, preferably dimethyl diallyl ammonium chloride or MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride or acrylyl oxy-ethyl
Trimethyl ammonium chloride.
Specifically, the monomer (c) is selected from di isopropenylbenzene, divinylbenzene, diallylamine, triallyl
Amine, methylene-bisacrylamide, glycol diacrylate, ethylene glycol dimethacrylate, diethylene glycol diacrylate,
Triethylene glycol diacrylate, BDO diacrylate, trimethylolpropane trimethacrylate, the propylene of pentaerythrite three
One or more mixture in acid esters, preferably methylene-bisacrylamide.
Alternately, it is on the premise of effect of the present invention is not damaged, then as needed, described to contain acrylamide
Copolymer also can use polymerizable monomer (d) to be further modified its copolymer, the polymerizable monomer (d) is
The vinyl ethers of alkadiene, vinyl ethers or hydroxyl, allyl ether series, the monomer with oxyalkylene, with hydroxyl
The polymerisable monomer such as ɑ-olefin monomer, ketone in one or more mixing monomers, monomer (d) total addition level
It is the 0.01%~20% of polymerisable monomer total mass fraction, preferably 0.01%~10%, more preferably 0.01%~5%.
For constituting bagasse base compounded mix of the invention, the monomer of surface acrylamide based copolymer coating film shell
In, main monomer (a) contains highly polar group, and has water solubility, and can assign copolymer has compared with strong hydrogen bonding function, can be by by it
More, intensity hydrogen bond higher is produced between bagasse base compounded mix and paper pulp fiber, by the combination of hydrogen bond, can be improved
The physical strength of paper or ensure paper physical intensity it is up to standard in the case of, its amount of filler is more, reaches reduces cost
Purpose；Monomer (b) assigns the function of copolymer cation, by it can by bagasse base compounded mix be adsorbed to it is cloudy from
On the paper pulp fiber in sublist face, the retention of bagasse base compounded mix wet end is improve；Monomer (c) is crosslinking copolymerization agent, is passed through
Bagasse base compounded mix its surface acrylamide crosslinking copolymers can be solidified into firm co-polymer membrane shell by it.
A kind of preparation method of bagasse base compounded mix as described above, it is comprised the following steps successively：
The grinding of A, bagasse
To be crushed after strip bagasse segment and sieved, then the bagasse after slightly breaking once sieve is crushed by flour mill,
Collect the bagasse powder granule of 30~200 mesh；
B, coating modification：
Bagasse powder granule, deionized water, complexing agent, the list of 2~5 times of bagasse powder granule quality are added in the reactor
Body and radical initiator mixture, stir into suspension, are heated up after letting nitrogen in and deoxidizing, are stirred at a temperature of 30~70 DEG C and are wrapped
Cover modified-reaction 2~6 hours, obtain the powder suspension of coating modification；
C, drying：
The powder suspension of above-mentioned coating modification is filtered, by 3~10 times of filter cake bagasse powder granule quality
Distillation water washing refilter and repeat 5~10 times, with wash remove it is non-grafted on bagasse powder and copolymerization soluble in water
Compound, then by filtration cakes torrefaction and by its grinding dispersion, obtains acrylamide polymer films cladding bagasse powder granule simultaneously
Bagasse base compounded mix with nucleocapsid structure.
Alternately, also as needed monomer (d) can be added to carry out further its copolymer in the step B
It is modified, monomer addition is the 0.0%~20% of polymerisable monomer total mass fraction, more excellent preferably 0.0%~10%
It is selected in 0.01%~5%.
Complexing agent in the step B includes phosphoric acid salt, alcamines, amino carboxylic acid salt, hydroxycarboxylic acid salt, organic
Phosphonates, polyacrylic etc., selected from sodium tripolyphosphate, sodium pyrophosphate, calgon, monoethanolamine, diethanol amine, three second
Hydramine, sodium ammonium triacetate (N TA), edetate (EDETATE SODIUM or four sodium), diethylenetriamine pentacarboxylic acid salt
(DTPA), tartaric acid, heptose hydrochlorate, sodium gluconate, ethylenediamine tetraacetic methene sodium phosphate (EDTMPS), the methene of diethylenetriamine five
One or more in phosphonate (DETPMPS) polyacrylic acid (PAA), poly- hydroxy acrylic acid of combination, its addition is copolymerization
The 0.01~0.08% of monomer gross mass.
Radical initiator mixture in the step B, including radical initiator and complex.Because oxidant can
The redox initiation system constituted with the alcoholic extract hydroxyl group on reducing agent such as bagasse surface can effectively trigger vinyl monomer to be polymerized and be grafted
Polymerization, so, the radical initiator is selected from the one kind in oxidant, including persulfuric acid salt, cerium ion salt, manganese salt class
Or two or more mixtures, and due to transition metal cerium Ce (I V) ions or by cerium Ce (I V) ions and reducing agent bagasse powder
The redox initiation system of the alcoholic extract hydroxyl group composition of body particle surface, because its decomposition activation energy is low, the product free yl induction phase is short,
Trigger free radical temperature low and the advantages of scope is wide, grafting efficiency is high, be widely used in carbohydrate and vinyl monomer
Graft reaction.Therefore, the present invention preferably transition metal cerium Ce (I V) ions or by cerium Ce (I V) ions and reducing agent bagasse
The redox initiation system of the alcoholic extract hydroxyl group composition on powder granule surface, the preferred cerium ion salt initiator of its initiator is described
Initiator addition is the 0.01%~3.0% of comonomer total mass fraction, preferably 0.05%~2.0%, is more preferably existed
0.5%~1.5%.
The cerium ion salt, is included in the presence of complex, selected from ammonium ceric nitrate.
The complex is dust technology.
The preparation method of above-mentioned bagasse base compounded mix, the bagasse powder granule of more active alcoholic extract hydroxyl group is contained to surface,
Alcoholic extract hydroxyl group thereon can constitute redox initiation system with oxidant.When bagasse powder granule is in the presence of oxidant,
Bagasse powder granule surface forms free radical, and bagasse powder free radical is met monomer and triggers monomer to be grafted thereon and copolymerization immediately.
Under the initiation of bagasse powder free radical, monomer (a), (b), (c), (d) copolymerization merging are grafted to bagasse powder granule
On surface.Main monomer (a) contains highly polar group, and has water solubility, and can assign copolymer has compared with strong hydrogen bonding function, by it
More, intensity hydrogen bond higher can will be produced between bagasse base compounded mix and paper pulp fiber, by the combination of hydrogen bond, can
Improve the physical strength of paper or in the case where ensureing that paper physical intensity is up to standard, its amount of filler is more, and reaching reduces into
This purpose.Due to adding the function monomer (b) with cationization in reaction system so that acrylamide co-polymer membrane
With cationic, so, the bagasse base compounded mix of bagasse powder granule coating modification can be just adsorbed to it is cloudy from
On the paper pulp fiber in sublist face, the retention in wet end is improve.Again due to adding crosslinkers monomers in reaction system
(c) so that acrylamide co-polymer membrane crosslinking curing is into firm copolymer film layer.Meanwhile, can also adjust single as needed
Amide-type polymerisable monomer and unsaturated carboxylic acid class polymerisable monomer and the usage ratio of monomer (b), copolymer bag in body (a)
Overlay film shell can be adjusted to tool anionic property or tool cationic or tool nonionic or tool zwitterion both sexes.To reduce gold
The influence of category ion pair polymerization reaction, should add complexing agent in reaction system, metal ion be sheltered, to improve polymerisation conversion
With the reaction efficiency of polymer.Interference can be produced to paper strength because filler contains emulsifying agent, therefore in the poly- of this coating modification
Close in reaction, employ the solution polymerization process without emulsifying agent.Simultaneously because in the course of the polymerization process, non-grafted to powder can be generated
The tool water solubility copolymer on surface, therefore in subsequent drying steps, fully washed with distilled water and filtered, it is non-to remove this
It is grafted to the tool water solubility copolymer of powder surface.
The present invention is also water-dispersible into suspension by obtained bagasse base compounded mix, is then added to production line of paper machine
On net before before machine chest or net in sizing compartment, be used for the production of paper instead of unmodified common fillers, or also can will be above-mentioned
Bagasse base compounded mix is water-dispersible into suspension, then with gelatinized corn starch liquid or other Cypres, surface is carried out to paper
Applying glue, can obtain a kind of paper containing above-mentioned bagasse base compounded mix.
Compared with prior art, the beneficial effects of the invention are as follows：It is this there is provided a kind of new bagasse base compounded mix
Filler has nucleocapsid structure, the surface polymer film of shell in addition to function is not desorbed, also with hydrophily and cation
Property, when being filled with for paper, while keeping even improving wet end retention, can reach the effect of enhancing and toughness reinforcing.Therefore,
Its characteristic can be made full use of, specifically, the filler special of paper is can serve as.
Specific embodiment
The present invention is further elaborated by the following examples, but embodiment does not limit the scope of the invention.
Embodiment 1
This example is the manufacture embodiment of bagasse grinding of the present invention.
Air-dried bagasse is crushed with hammer crusher to it, in the presence of indoor air flow is crushed, crushed material leads to
Sieve (mesh size 4mm) and discharge, crushed material is again by using Secondary Air full trrottle time stage formula impact grinding pair after discharge
The thick bagasse broken once after sieve is crushed, and collects the bagasse powder granule less than 60 mesh.
Embodiment 2
This example is the manufacture embodiment of bagasse base compounded mix of the invention.
A, coating modification：
By the bagasse powder granule 50g of above-described embodiment 1, deionized water 200g, EDTA-2Na0.001g, acrylamide
1.50g, dimethyl diallyl ammonium chloride 0.20g, methylene-bisacrylamide 0.02g, sequentially add and have been placed in temperature controlled water bath
In pot and in the 300ml there-necked flasks with stirring and logical nitrogen device, suspension is stirred into, then adjust anti-with dust technology (30%)
It is 3.0~4.0 to answer the pH value of system, after being subsequently adding cerous ammonium nitrate 0.015g, then bulging nitrogen deoxygenation 30min, warming while stirring
To 50 DEG C, reaction is terminated after 48~52 DEG C of stirring reaction 5h.
B, drying：
Then the powder suspension to above-mentioned coating modification is filtered, and filter cake then is distilled into water washing again with 400g
Filtering, and is repeated 8 times, with wash remove it is non-grafted on powder and polymer soluble in water.Filter cake is finally placed in 45 DEG C
Dried to constant weight in vacuum drying chamber, and grinding dispersion is that can obtain the acrylamide polymer films that surface has cationic
Cladding bagasse powder granule and the bagasse base compounded mix with nucleocapsid structure.
Embodiment 3
This example is another manufacture embodiment of bagasse base compounded mix of the invention.
A, coating modification：
By bagasse the powder granule 50g, deionized water 200g, ethylenediamine tetraacetic methene sodium phosphate of above-described embodiment 1
(EDTMPS) 0.001g, acrylamide 2.0g, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride 0.20g, methylene bisacrylamide acyl
Amine 0.015g, sequentially add have been placed in temperature control water bath and band stir and the 300ml there-necked flasks of logical nitrogen device in, stir into
Suspension, is added followed by containing 0.025g ammonium ceric nitrates and the mixed liquor that is dissolved in 1 milliliter of 1N nitric acid, then rouses nitrogen deoxygenation
After 30min, warming while stirring terminates reaction to 40 DEG C after 40~45 DEG C of stirring reaction 6h.
B, drying：
Then the powder suspension to above-mentioned coating modification is filtered, and filter cake then is distilled into water washing again with 350g
Filtering, and is repeated 7 times, with wash remove it is non-grafted on powder and polymer soluble in water.Filter cake is finally placed in 45 DEG C
Dried to constant weight in vacuum drying chamber, and grinding dispersion is that can obtain the acrylamide polymer films that surface has cationic
Cladding bagasse powder granule and the bagasse base compounded mix with nucleocapsid structure.
Embodiment 4
This example is another manufacture embodiment of bagasse base compounded mix of the invention.
A, coating modification：
By bagasse the powder granule 50g, deionized water 200g, diethylenetriamine pentacarboxylic acid salt (DTPA) of above-described embodiment 1
0.001g, acrylamide 1.5g, acrylic acid 0.1g, acrylyl oxy-ethyl-trimethyl salmiac 0.12g, methylene-bisacrylamide
0.015g, 4- hydroxy butyl vinyl ether 0.02g, sequentially add and have been placed in temperature control water bath and band is stirred and logical nitrogen device
In 300ml there-necked flasks, suspension is stirred into, be added followed by containing 0.02g ammonium ceric nitrates and be dissolved in 1 milliliter of 1.5N nitric acid
After mixed liquor, then bulging nitrogen deoxygenation 30min, warming while stirring terminates reaction to 38 DEG C after 35~40 DEG C of stirring reaction 6h.
B, drying：
Then the powder suspension to above-mentioned coating modification is filtered, and filter cake then is distilled into water washing again with 300g
Filtering, and is repeated 10 times, with wash remove it is non-grafted on powder and polymer soluble in water.Filter cake is finally placed in 40 DEG C
Dried to constant weight in vacuum drying chamber, and grinding dispersion is that can obtain the acrylamide combined polymerization that surface has zwitterion both sexes
Thing film coats bagasse powder granule and has the bagasse base compounded mix of nucleocapsid structure.
Embodiment 5
This example is the embodiment that paper is manufactured using the bagasse base compounded mix obtained by above-described embodiment 2.
Litter decoration paper is soaked in water after 20min, 20000r is discongested through standard fluffer, mashing is then ground using PFI,
Its beating process condition is：Beating consistency 9%, after final beating degree reaches 20 ± 2 ° of SR, plus 1.5% (to fiber quality percentage
Number) AKD sizing agents, it is stand-by after stirring；Separately the bagasse base compounded mix obtained by embodiment 2 is made into running water
25% suspension, is 30 by bagasse base compounded mix and fibre stuff Solid content mass ratio：70 ratio, and weigh corresponding
25% filler suspension and the above-mentioned paper pulp through discongesting, being beaten and dispensing is stand-by are made into, have been mixed, after being well mixed again
The concentration paper supply handsheet machine handsheet for being diluted to 0.5% is used, then using the paper handsheet of machinery plant of Shaanxi Tech Univ production
Machine, carries out being copied into quantification of 100g/m on paper handsheet machine with the mixed slurry containing bagasse based filler for preparing2Handsheet,
The handsheet is to obtain the paper containing above-mentioned bagasse base compounded mix after 5~8% through being dried to water content.
Comparative example 1
This comparative example be on the basis of embodiment 5, using the bagasse base compounded mix obtained by above-described embodiment 3 as
Bagasse base compounded mix is ferreted out the paper for coming.
Comparative example 2
This comparative example be on the basis of embodiment 5, using the bagasse base compounded mix obtained by above-described embodiment 4 as
Bagasse base compounded mix is ferreted out the paper for coming.
Comparative example 3
This comparative example is that on the basis of embodiment 5, without bagasse base compounded mix, other conditions are ferreted out when identical
The paper for coming.
Performance test：
The paper that above-described embodiment 5 and the handsheet machine of comparative example 1~3 are copied into is processed in the constant temperature and humidity by 24 hours
Afterwards, its tensile strength is determined according to national standard, the measurement result of its paper physical intensity is shown in Table 1：
Table 1
Embodiment 6
Cypres are made with the bagasse base compounded mix obtained by embodiment 2 and makes size press coated paper
The preparation of corn starch paste liquid：
30g cornstarch is made into mass concentration and is 10% aqueous solution, and add the ammonium persulfate of 0.12g, added
In the there-necked flask of 300ml, unlatching is stirred and is slowly ramped to stop at 90 DEG C, and after gelatinization 30min at a temperature of 90 DEG C,
60 DEG C of insulations are standby.
It is coated with the preparation of glue application solution：
Bagasse base compounded mix 10g obtained by embodiment 2 is made into the aqueous solution that mass concentration is 10%, and is added
The Cypres 1.0g of corn starch paste liquid 100g, model SA-4001 is stated, it is 5~6 to be equipped with aluminum sulfate and adjust pH value, stirring
It is uniform stand-by.
Top sizing：
On automatic coating machine, 140g/m is evenly coated in by glue application solution is coated with certain speed2On fluting medium surface, control
Coating weight processed is about 6g/m2(two-sided), dries 10min in air dry oven, after drying, pattern is carried out into constant temperature and humidity balance
Treatment.
Comparative example 4
This comparative example be on the basis of embodiment 6, using the bagasse base compounded mix obtained by above-described embodiment 3 as
Applying glue paper out is coated with during bagasse base compounded mix.
Comparative example 5
This comparative example be on the basis of embodiment 6, using the bagasse base compounded mix obtained by above-described embodiment 4 as
Applying glue paper out is coated with during bagasse base compounded mix.
Comparative example 6
This comparative example is that on the basis of embodiment 6, without bagasse base compounded mix, other conditions are coated with when identical
Applying glue paper out.
Comparative example 7
This comparative example is on the basis of comparative example 6, without any material, it to be applied with clear water only, other conditions
The paper for being coated with out when identical.
Performance test：
By the paper of above-described embodiment 6 and comparative example 4~7 after being processed by the constant temperature and humidity of 24 hours, according to country
Standard test its ring crush intensity, the measurement result of its paper physical intensity is shown in Table 2：
Table 2
| Embodiment | Filler used | Ring crush index (N.m/g) |
| Embodiment 6 | The filler of embodiment 2 | 9.20 |
| Comparative example 4 | The filler of embodiment 3 | 9.36 |
| Comparative example 5 | The filler of embodiment 4 | 9.29 |
| Comparative example 6 | Without filler | 8.82 |
| Comparative example 7 | Top sizing is carried out with clear water | 8.05 |
Claims (9)
1. a kind of bagasse base compounded mix, it is characterised in that：The bagasse base compounded mix is a kind of change with nucleocapsid structure
Compound, wherein using bagasse powder granule as the core of the nucleocapsid structure compound, propylene is grafted and contained with bagasse powder granule
The coating film of acid amides based copolymer as the nucleocapsid structure compound shell, the bagasse powder granule is to crush bagasse
To the particle of 30~200 mesh, the coating film shell containing acrylamide based copolymer is by monomer (a), (b), (c) combined polymerization
Form, wherein：
The monomer (a) is selected from one or more in amide-type polymerisable monomer or unsaturated carboxylic acid class polymerisable monomer
Mixture, monomer addition is the 0.01~10.0% of bagasse powder granule mass fraction, preferably 0.05%~
7.0%, more preferably 1%~5%；
The monomer (b) is the polymerisable monomer with cationic amine or the polymerisable monomer with quaternized cationic
In one or more mixture, monomer addition for monomer (a) mass fraction 0.01~30.0%, preferably exist
1.0%~20.0%, more preferably 3.0%~15%；
The monomer (c) is with one or more in 2 or more than 2 crosslinkers monomers or oligomer of vinyl
Mixture, monomer addition for monomer (a) mass fraction 0.01~7.0%, it is more excellent preferably 0.05%~5.0%
It is selected in 0.1%~3%.
2. bagasse base compounded mix according to claim 1, it is characterised in that：The amide-type polymerisable monomer of monomer (a)
Selected from acrylamide, Methacrylamide, with C1-C10Alkylol acrylamides, with C1-C10Hydroxyalky methyl propylene
One or more mixture in acid amides, preferably acrylamide or Methacrylamide；The unsaturated carboxylic acid of monomer (a)
Class polymerisable monomer is with 3 to 8 unsaturated carboxylic acids of carbon number, selected from acrylic acid, methacrylic acid, itaconic acid, horse
One or more the mixture come in sour, fumaric acid, aconitic acid, preferably acrylic acid or itaconic acid or maleic acid.
3. bagasse base compounded mix according to claim 1, it is characterised in that：Monomer (b) be selected from DMAA,
Diallylamine, triallylamine, dimethylamino ethyl acrylate, Dimethylaminoethyl Methacrylate, methacrylic acid two
Ethylamino- ethyl ester, dimethyl diallyl ammonium chloride, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, acrylyl oxy-ethyl front three
One or more mixture in ammonium chloride, preferably dimethyl diallyl ammonium chloride, methylacryoyloxyethyl
Trimethyl ammonium chloride, acrylyl oxy-ethyl-trimethyl salmiac.
4. bagasse base compounded mix according to claim 1, it is characterised in that：Monomer (c) is selected from di isopropenylbenzene, two
Vinyl benzene, diallylamine, triallylamine, methylene-bisacrylamide, glycol diacrylate, ethylene glycol dimethyl
Acrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, BDO diacrylate, trihydroxy methyl
Propane triacrylate, preferably one or more the mixture in pentaerythritol triacrylate, methylene bisacrylamide
Acid amides.
5. bagasse base compounded mix according to claim 1, it is characterised in that：It is described containing acrylamide based copolymer
The copolymerization monomer of coating film also includes monomer (d), and monomer (d) is the vinyl ethers of alkadiene, vinyl ethers or hydroxyl
In the polymerisable monomer such as class, allyl ether series, the monomer with oxyalkylene, ɑ-olefin monomer, ketone with hydroxyl
The monomer of one or more mixing, monomer total addition level is the 0.0%~20% of polymerisable monomer total mass fraction, excellent
0.01%~10% is selected in, more preferably 0.01%~5%.
6. the preparation method of a kind of bagasse base compounded mix as described in Claims 1 to 5 is any, it is characterised in that include successively
Following steps：
The grinding of A, bagasse
To be crushed after strip bagasse segment and sieved, then the bagasse after slightly breaking once sieve is crushed by flour mill, collected
The bagasse powder granule of 30~200 mesh；
B, coating modification：
Add in the reactor bagasse powder granule, the deionized water of 2~5 times of bagasse powder granule quality, complexing agent, monomer and
Radical initiator mixture, stirs into suspension, is heated up after letting nitrogen in and deoxidizing, and stirring carries out cladding and changes at a temperature of 30~70 DEG C
Property reaction 2~6 hours, obtain the powder suspension of coating modification；
C, drying：
The powder suspension of above-mentioned coating modification is filtered, by the steaming of 3~10 times of filter cake bagasse powder granule quality
Distilled water washing is refiltered and repeated 5~10 times, with wash remove it is non-grafted on powder and co-polymer soluble in water, then
By filtration cakes torrefaction and by its grinding dispersion, the bagasse base for obtaining acrylamide polymer films cladding bagasse powder granule is combined
Filler.
7. the preparation method of bagasse base compounded mix according to claim 6, it is characterised in that：Network in the step B
Mixture is included in phosphoric acid salt, alcamines, amino carboxylic acid salt, hydroxycarboxylic acid salt, organic phospho acid salt, polyacrylic
One or more mixture, preferably sodium tripolyphosphate, sodium pyrophosphate, calgon, monoethanolamine, diethanol amine, three
Monoethanolamine, sodium ammonium triacetate, edetate, diethylenetriamine pentacarboxylic acid salt, tartaric acid, heptose hydrochlorate, gluconic acid
One kind in sodium, ethylenediamine tetraacetic methene sodium phosphate, diethylene triamine pentamethylene phosphonic salt, polyacrylic acid, poly- hydroxy acrylic acid or
Two or more mixtures, its addition is the 0.01~0.08% of copolymerization monomer total mass fraction.
8. the preparation method of bagasse base compounded mix according to claim 6, it is characterised in that：In the step B from
It is made up of radical initiator and complex base initiator mixture, the cerous nitrate of radical initiator selected from cerium ion salt
Ammonium, initiator addition is the 0.01%~3.0% of comonomer gross mass, preferably 0.05%~2.0%, is more preferably existed
0.5%~1.5%；Complex is selected from nitric acid.
9. a kind of paper, it is characterised in that:Contain any described bagasse base compounded mix of Claims 1 to 5.
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| CN110331613A (en) * | 2019-08-01 | 2019-10-15 | 江南大学 | A method of improving granular filler paper products filler retention |
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