CN110172851A - A kind of method of modifying producing wrapping paper chemi-mechanical pulp - Google Patents
A kind of method of modifying producing wrapping paper chemi-mechanical pulp Download PDFInfo
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- CN110172851A CN110172851A CN201910464087.0A CN201910464087A CN110172851A CN 110172851 A CN110172851 A CN 110172851A CN 201910464087 A CN201910464087 A CN 201910464087A CN 110172851 A CN110172851 A CN 110172851A
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- mechanical pulp
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
- D21C9/005—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives organic compounds
-
- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
- D21H11/20—Chemically or biochemically modified fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
- D21H17/29—Starch cationic
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
- D21H17/42—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups anionic
- D21H17/43—Carboxyl groups or derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
- D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
-
- 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
- D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
- D21H17/72—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic material
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
The present invention relates to a kind of method of modifying for producing wrapping paper chemi-mechanical pulp to be modified processing to chemi-mechanical pulp by the way of alternating layer assembling, improve its paper strength using the cation and anionic polymer modifying agent of low cost.Chemi-mechanical pulp is dispersed into certain density pulp suspension by the first step, adds cation modifier, and modifying agent is that the mixture of one or more of cationic starch, Low Molecular Weight Cationic Polyacrylamide, cationic chitosan mixes.Second step is added anion-modified dose after uniformly mixing a period of time, modifying agent is the mixture of one or both of sodium carboxymethylcellulose, anionic polyacrylamide under certain condition.Finally repeat the cation-modified process of the first step, three layers of alternate polymer architecture of cationic anionic are formed in chemi-mechanical pulp fiber surface, obtained modified pulp paper strength improves 15% or more than unmodified, and alternative part chemical pulp is used to produce the wrapping paper of high quality.
Description
Technical field
The invention belongs to the technical fields of chemi-mechanical pulp, and in particular to a kind of to produce changing for wrapping paper chemi-mechanical pulp
Property method.
Background technique
Disclosing the information of the background technology part, it is only intended to increase understanding of the overall background of the invention, without certainty
It is considered as recognizing or implying in any form that information composition has become existing skill well known to persons skilled in the art
Art.
With the development of the social economy, the production and consumption amount of paper products increases year by year, while Paper Industry Development,
There is the problems such as there is lack of raw materials, pollution and energy consumption are high, constrains the development of paper industry.Energy-saving and emission-reduction clean manufacturing becomes
The key point of contemporary paper industry sustainable development.Wherein, environmentally friendly pulping technique is current reduction industrial pollution caused by paper manufacturing, energy
One of the important technology of consumption and cost.
Chemi-mechanical pulp be prepared in such a way that chemical pretreatment and mechanical dissociation combine yield generally 60% with
On paper pulp, which has the advantages such as yield is high, pollution is small, specific energy consumption is low.Chemical machinery pulp fibres are endured with fiber
Hardness is high, the advantages such as at low cost, and addition chemi-mechanical pulp can greatly improve the property such as opacity, stiffness of paper in paper
Can, while reduce the cost of paper, therefore it is widely used in and prepares wrapping paper, cultural paper etc..
For chemi-mechanical pulp because lignin content is higher, paper strength difference is to limit the bottleneck problem of its application.Currently, chemical
The addition of mechanical pulp is only to carry out copy paper after former chemi-mechanical pulp is replaced chemical pulp.Because content of cellulose is compared with chemical pulp phase
Amount to be lacked, relatively fewer at the hydrogen bond formed after paper, paper strength reduces obvious.Therefore, chemi-mechanical pulp adds for papermaking
Dosage cannot be too high, limits its wider array of utilization.
Summary of the invention
In order to overcome the above problem, the present invention provides a kind of modified method of chemi-mechanical pulp, the characteristics of technique, is:
Chemi-mechanical pulp is dispersed in water first, is thickened, then carries out adsorption treatment using cationic polymer, recycles yin
Ionomer carries out adsorption treatment, is finally post-processed to obtain modified chemi-mechanical pulp using cationic polymer solution
Fiber.The modified chemical mechanical pulp fiber obtained by this technique has the characteristics that retention is high, intensity is high, alternative chemical pulp
Production for wrapping paper.
To realize the above-mentioned technical purpose, The technical solution adopted by the invention is as follows:
A kind of method of modifying producing wrapping paper chemi-mechanical pulp, comprising:
Successively chemi-mechanical pulp is changed using cationic polymer I, anionic polymer, cationic polymer II
Property to get.
In some embodiments, the cationic polymer I, II is cationic starch, low molecular weight cationic polypropylene
At least one of amide or cationic chitosan, above-mentioned cationic polymer to the substance with anionic charge have compared with
Good affinity interaction is played a role by the positively charged negative electrical charge generation Electrostatic Absorption with fiber surface institute band of institute.
The research of the invention finds that: in the modified paper of cationic polymer, a certain amount of anionic polymer is added,
It can be effectively adsorbed on fiber, form Hydrogenbond with fiber, increase the bond strength of paper.Therefore, in some embodiments
In, the anionic polymer is at least one of sodium carboxymethylcellulose, anionic polyacrylamide.
The modified paper of cationic polymer is not only needed containing suitable cationic groups, but also to have enough numbers
Amount can form the group of hydrogen bond with the hydroxyl of cellulose, and reasonable group proportion is the final guarantee for playing humidification, therefore,
In some embodiments, the additive amount of the cationic polymer I, II is the 1~2% of oven dry stock quality, preferable to obtain
Strengthening for paper effect.
Research shows that: with the increase of the additive amount of anionic polymer, anti-tensile, folding and the pop strength of paper are gradually
Increase, but after the dosage of anionic polymer reaches 2%, the dosage for continuing growing anionic polymer mentions paper performance
It rises little.Therefore, in some embodiments, the additive amount of the anionic polymer is the 1~2% of oven dry stock quality, to have
Improve the intensity of paper in effect ground.
In some embodiments, the mass concentration of the chemi-mechanical pulp is 3~6%.
In some embodiments, modified temperature is 40-60 DEG C.
In some embodiments, modification carries out under agitation, 60~100rpm of stirring rate, and 30~60 points of the time
Clock.
The present invention also provides the production wrapping paper chemi-mechanical pulps of any above-mentioned method preparation.
The present invention also provides above-mentioned chemi-mechanical pulps to prepare the application in wrapping paper or cultural paper.
The beneficial effects of the present invention are:
(1) suction-operated of the invention by cationic polymer and anionic polymer, to electronegative chemical machinery
Slurry is handled, and the intensity and retention of chemi-mechanical pulp are improved, thus chemi-mechanical pulp additive amount and adaptation can be improved
Paper kind.
(2) operating method of the invention it is simple, it is at low cost, have universality, be easy to large-scale production.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the present invention.Unless another
It indicates, all technical and scientific terms that the present invention uses have logical with general technical staff of the technical field of the invention
The identical meanings understood.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In the examples where no specific technique or condition is specified, according to the literature in the art described technology or conditions or
Person carries out according to product description.Reagents or instruments used without specified manufacturer, being can be by the normal of commercially available acquisition
Advise product.
As background technique is introduced, for chemi-mechanical pulp because lignin content is higher, the problem of paper strength difference.
Therefore, the present invention proposes a kind of method for improving chemi-mechanical pulp intensity, is modified using three step layer packaging technology, specific work
Skill condition is as follows:
(1) cationic polymer modifying technology conditions are as follows: chemi-mechanical pulp mass concentration is 3~6%, modifying agent cation
Polymer additive amount is the 1~2% of chemi-mechanical pulp (absolute dry mass), and 40-60 DEG C of temperature, mixing speed is 60~100rpm,
Time 30~60 minutes, modifying agent be cationic starch, Low Molecular Weight Cationic Polyacrylamide (molecular weight is 20-50 ten thousand),
The mixture of one or more of cationic chitosan, mixing mass ratio 1:1:1-1:1:3.
(2) for anionic polymer modifying technology conditions with (1), anion-modified dose is sodium carboxymethylcellulose, anion
The mixture of one or both of polyacrylamide, mixing mass ratio 1:1-3:1.
(3) (1) modifying process is repeated, the paper pulp fiber that layer assembling modification has weak cation is obtained.
The solution of the present invention is described below by way of specific embodiment, wherein chemi-mechanical pulp is purchased from Shandong too
Positive Paper Co., Ltd provides, and is detected using Britt Jar dynamic drainage tester to paper pulp retention, using national standard
GB/T 12914-2008 detects the tensile strength of paper.
Embodiment 1
First by chemi-mechanical pulp be separated into mass concentration be 3% pulp suspension, mixing speed 60rpm, herein
Under the conditions of carry out first step modification, modifying agent cationic polymer additive amount be chemi-mechanical pulp (absolute dry mass) 1%,
40 DEG C of temperature, the time 30 minutes, modifying agent was cationic starch.Secondly, under the process conditions of first step processing, anion
Modifying agent is sodium carboxymethylcellulose.The modified first step that repeats of third step cationic polymer is modified, obtain modified sun from
Sub- paper pulp fiber.The modified paper pulp retention improves 8.5%, and tensile strength improves 15.2%.
Embodiment 2
First by chemi-mechanical pulp be separated into mass concentration be 4% pulp suspension, mixing speed 80rpm, herein
Under the conditions of carry out first step modification, modifying agent cationic polymer additive amount is chemi-mechanical pulp (absolute dry mass)
1.5%, temperature 50 C, the time 45 minutes, modifying agent was Low Molecular Weight Cationic Polyacrylamide.Secondly, in first step processing
Process conditions under, anion-modified dose be anionic polyacrylamide.Third step cationic polymer is modified to repeat the first step
It is modified, obtain modified cationic paper pulp fiber.The modified paper pulp retention improves 9.0%, and tensile strength improves
17.5%.
Embodiment 3
First by chemi-mechanical pulp be separated into mass concentration be 6% pulp suspension, mixing speed 100rpm, herein
Under the conditions of carry out first step modification, modifying agent cationic polymer additive amount be chemi-mechanical pulp (absolute dry mass) 2%,
Temperature 60 C, the time 60 minutes, modifying agent was cationic chitosan.Secondly, the first step processing process conditions under, yin from
Sub- modifying agent is the mixture of sodium carboxymethylcellulose, anionic polyacrylamide, mixing mass ratio 3:1.Third step sun
The modified first step that repeats of ionomer is modified, obtains modified cationic paper pulp fiber.The modified paper pulp retention
9.1% is improved, tensile strength improves 18.4%.
Embodiment 4
First by chemi-mechanical pulp be separated into mass concentration be 6% pulp suspension, mixing speed 100rpm, herein
Under the conditions of carry out first step modification, modifying agent cationic polymer additive amount be chemi-mechanical pulp (absolute dry mass) 2%,
Temperature 60 C, the time 60 minutes, modifying agent was Low Molecular Weight Cationic Polyacrylamide.Secondly, in the technique of first step processing
Under the conditions of, anion-modified dose for sodium carboxymethylcellulose, anionic polyacrylamide mixture, mixing mass ratio 3:
1.The modified first step that repeats of third step cationic polymer is modified, obtains modified cationic paper pulp fiber.This is modified
Paper pulp retention improves 9.3%, and tensile strength improves 18.8%.
Embodiment 5
First by chemi-mechanical pulp be separated into mass concentration be 6% pulp suspension, mixing speed 100rpm, herein
Under the conditions of carry out first step modification, modifying agent cationic polymer additive amount be chemi-mechanical pulp (absolute dry mass) 2%,
Temperature 60 C, the time 60 minutes, modifying agent was cationic starch.Secondly, under the process conditions of first step processing, anion
Modifying agent is the mixture of sodium carboxymethylcellulose, anionic polyacrylamide, mixing mass ratio 3:1.Third step sun from
Sub- polymer modification repeats the first step and is modified, and obtains modified cationic paper pulp fiber.The modified paper pulp retention mentions
High by 8.9%, tensile strength improves 18.6%.
Embodiment 6
First by chemi-mechanical pulp be separated into mass concentration be 6% pulp suspension, mixing speed 100rpm, herein
Under the conditions of carry out first step modification, modifying agent cationic polymer additive amount be chemi-mechanical pulp (absolute dry mass) 2%,
Temperature 60 C, the time 60 minutes, modifying agent was cationic starch, Low Molecular Weight Cationic Polyacrylamide, cationic chitosan
In mixture, mixing mass ratio 1:1:1.Secondly, anion-modified dose is carboxylic under the process conditions of first step processing
The mixture of sodium carboxymethylcellulose pyce, anionic polyacrylamide, mixing mass ratio 3:1.Third step cationic polymer changes
Property to repeat the first step modified, obtain modified cationic paper pulp fiber.The modified paper pulp retention improves 9.8%, resists
Zhang Qiangdu improves 21.0%.
Embodiment 7
First by chemi-mechanical pulp be separated into mass concentration be 6% pulp suspension, mixing speed 100rpm, herein
Under the conditions of carry out first step modification, modifying agent cationic polymer additive amount be chemi-mechanical pulp (absolute dry mass) 2%,
Temperature 60 C, the time 60 minutes, modifying agent was cationic starch, Low Molecular Weight Cationic Polyacrylamide, cationic chitosan
In mixture, mixing mass ratio 1:1:1.Secondly, anion-modified dose is carboxylic under the process conditions of first step processing
Sodium carboxymethylcellulose pyce.The modified first step that repeats of third step cationic polymer is modified, obtains modified cationic paper pulp fiber.
The modified paper pulp retention improves 9.5%, and tensile strength improves 20.0%.
Embodiment 8
First by chemi-mechanical pulp be separated into mass concentration be 6% pulp suspension, mixing speed 100rpm, herein
Under the conditions of carry out first step modification, modifying agent cationic polymer additive amount be chemi-mechanical pulp (absolute dry mass) 2%,
Temperature 60 C, the time 60 minutes, modifying agent was cationic starch, Low Molecular Weight Cationic Polyacrylamide, cationic chitosan
In mixture, mixing mass ratio 1:1:1.Secondly, anion-modified dose is yin under the process conditions of first step processing
Cationic polyacrylamide, mixing mass ratio 3:1.The modified first step that repeats of third step cationic polymer is modified, is changed
Cationic paper pulp fiber after property.The modified paper pulp retention improves 9.6%, and tensile strength improves 20.2%.
Finally it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not limited to this hair
It is bright, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still
It can modify to technical solution documented by previous embodiment, or part is equivalently replaced.It is all in this hair
Within bright spirit and principle, any modification, equivalent replacement, improvement and so on should be included in protection scope of the present invention
Within.
Claims (10)
1. a kind of method of modifying for producing wrapping paper chemi-mechanical pulp characterized by comprising
Successively chemi-mechanical pulp is modified using cationic polymer I, anionic polymer, cationic polymer II, i.e.,
?.
2. the method as described in claim 1, which is characterized in that the cationic polymer I, II is cationic starch, low point
Son amount at least one of cationic polyacrylamide or cationic chitosan.
3. the method as described in claim 1, which is characterized in that the anionic polymer be sodium carboxymethylcellulose, yin from
At least one of sub- polyacrylamide.
4. the method as described in claim 1, which is characterized in that the additive amount of the cationic polymer I, II is oven dry stock
1~2%.
5. the method as described in claim 1, which is characterized in that the additive amount of the anionic polymer is oven dry stock quality
1~2%.
6. the method as described in claim 1, which is characterized in that the mass concentration of the chemi-mechanical pulp is 3~6%.
7. the method as described in claim 1, which is characterized in that modified temperature is 40-60 DEG C.
8. the method as described in claim 1, which is characterized in that modification carries out under agitation, stirring rate 60~
100rpm, the time 30~60 minutes.
9. the production wrapping paper chemi-mechanical pulp of the described in any item method preparations of claim 1-8.
10. chemi-mechanical pulp as claimed in claim 9 is preparing the application in wrapping paper or cultural paper.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910464087.0A CN110172851A (en) | 2019-05-30 | 2019-05-30 | A kind of method of modifying producing wrapping paper chemi-mechanical pulp |
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| CN201910464087.0A CN110172851A (en) | 2019-05-30 | 2019-05-30 | A kind of method of modifying producing wrapping paper chemi-mechanical pulp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575616A (en) * | 2020-11-30 | 2021-03-30 | 山东华泰纸业股份有限公司 | Production method of high-strength high-air-permeability extensible packaging paper |
| CN115821624A (en) * | 2022-11-09 | 2023-03-21 | 金东纸业（江苏）股份有限公司 | Method for improving paper strength and paper |
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| CN104797756A (en) * | 2012-11-12 | 2015-07-22 | 凯米罗总公司 | Method for treating a fibre stock for making of paper, board or the like and product |
| CN109154146A (en) * | 2016-05-20 | 2019-01-04 | 凯米罗总公司 | Papermaking process and processing system |
| CN109563686A (en) * | 2016-09-26 | 2019-04-02 | 凯米罗总公司 | The method of dry strength composition, its purposes and manufacture paper, cardboard etc. |
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2019
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Patent Citations (4)
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|---|---|---|---|---|
| CN104797756A (en) * | 2012-11-12 | 2015-07-22 | 凯米罗总公司 | Method for treating a fibre stock for making of paper, board or the like and product |
| CN103981756A (en) * | 2014-05-22 | 2014-08-13 | 金东纸业（江苏）股份有限公司 | Method for processing papermaking mechanical pulp |
| CN109154146A (en) * | 2016-05-20 | 2019-01-04 | 凯米罗总公司 | Papermaking process and processing system |
| CN109563686A (en) * | 2016-09-26 | 2019-04-02 | 凯米罗总公司 | The method of dry strength composition, its purposes and manufacture paper, cardboard etc. |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575616A (en) * | 2020-11-30 | 2021-03-30 | 山东华泰纸业股份有限公司 | Production method of high-strength high-air-permeability extensible packaging paper |
| CN115821624A (en) * | 2022-11-09 | 2023-03-21 | 金东纸业（江苏）股份有限公司 | Method for improving paper strength and paper |
| CN115821624B (en) * | 2022-11-09 | 2024-05-28 | 金东纸业（江苏）股份有限公司 | Method for improving strength of paper and paper |
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