CN104452425B - Microfiber cellulose enveloped and retained high filling papermaking process - Google Patents
Microfiber cellulose enveloped and retained high filling papermaking process Download PDFInfo
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- CN104452425B CN104452425B CN201410620847.XA CN201410620847A CN104452425B CN 104452425 B CN104452425 B CN 104452425B CN 201410620847 A CN201410620847 A CN 201410620847A CN 104452425 B CN104452425 B CN 104452425B
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Abstract
The invention discloses a microfiber cellulose enveloped and retained high filling papermaking process. The process comprises the following steps: grinding industrial microfiber celluloses after ultrasonic treatment by using a PFI mill to increase the fibrillating degree; then, firstly, uniformly mixing the celluloses with filler calcium carbonate or a talcum powder dispersion, standing to form a filler/MFC pre-enveloping body, and then adding cationic polyacrylamide to form a relatively stable enveloping body; adding into papermaking slurry to be uniformly mixed; and finally, manufacturing by using a common papermaking moulding process to obtain highly filled paper. The microfiber celluloses are high in branching degree and can be lap-jointed with one another during wet process moulding of papermaking to form dense network structures which are far greater than common paper pulp fibers in quantity, so that the interception and the envelopment of filler particles are facilitated and the retention rate of the filler in the paper is remarkably increased; the microfiber celluloses are extremely large in specific surface area and free hydroxyl groups on the surface are extremely abundant so as to form hydrogen bonds which are several times the common microfiber celluloses in quantity, so that the problem that a high-content filler paper-based material is poor in strength is solved.
Description
【Technical field】
The invention belongs to pulping and paper-making field, and in particular to a kind of paper technology.
【Background technology】
The content of Fillers in Paper is improved, not only contributes to reduce the production cost of paper, improve enterprise profit, more favorably
In the situation for alleviating paper industry fibrous raw material resource scarcity.But filler is usually inorganic mineral powder, between its particulate or with fibre
Chemical bond or Hydrogenbond can not be produced between dimension；Meanwhile, the presence of filler particles will hinder paper pulp fine by steric effect
Hydrogenbond between dimension, therefore, filler is added in paper can cause the loss of paper strength, including paper physical intensity and surface
Intensity etc., and filer content is higher, loss of strength is bigger.Paper physical low intensity, is easily caused paper easy in production and application
Fracture, breakage；Surface strength reduces being easily caused paper generation hair and powder dropping phenomenon, it is difficult to meet the needs of Modern High-Speed printing.
Therefore, it is technology of the pendulum in face of papermaking scientific and technical personnel that how can improve the filer content of paper and can protect the intensity of paper again
A difficult problem.Meanwhile, the retention of filler is low during high filler content sheet formation, is lost in very greatly with plain boiled water, how to improve filler
High retention be also the another technical barrier for realizing paper high-filling.
【The content of the invention】
It is an object of the invention to provide a kind of fento cellulose envelope retention high-filling paper technology, improves paper strong
Degree, realizes that paper high-filling and high intensity coexist.
For achieving the above object, the technical solution used in the present invention is：
A kind of fento cellulose envelope retention high-filling paper technology, comprises the following steps：
1) first, industrial fibrillation cellulose products are diluted with water to the concentration that mass percent is 1%～5%, so
Carry out ultrasonication at normal temperatures afterwards；
2) by step 1) the fento cellulose after ultrasonication is concentrated into the concentration that mass percent is 10%, adopts
PFI fiberizers carry out fibrillating process；
3) by step 2) fibrillating process after fento cellulose be diluted with water for mass percent be 2%～8%
Concentration, be subsequently adding filler；Stand after high shear force is well mixed and form filler/MFC preenvelop body disperse systems；Wherein,
It is 70%～90% that filler accounts for total solid mass percent in filler/MFC preenvelop body disperse systems；
4) add by the amount of solid quality percentage 0.02%～0.06% in filler/MFC preenvelop body disperse systems and help
Retention aid and filter PAMC, low shear mixing uniformly forms afterwards filler/MFC enveloping solid disperse systems；
5) by step 4) in the filler/MFC enveloping solids disperse system that formed add and low-shearing force is carried out in chemical pulp paper pulp mix
Conjunction is formed uniformly total dispersion system；Wherein, solid content is that solid content is total in total dispersion system in filler/MFC enveloping solid disperse systems
The 45%～70% of quality；Then being rapidly added in sheet forming apparatus carries out manufacture paper with pulp shaping, drying, obtains fento cellulose bag
The high-filling paper of network retention.
Preferably, step 1) in the parameter of ultrasonication be：Ultrasonic power is 300W, frequency 20kHz, process time
20～40min.
Preferably, step 2) in, the process revolution for controlling PFI fiberizers is 20000～60000 turns.
Preferably, step 3) in high shear force be well mixed after stand 1～5 second and form the dispersion of filler/MFC preenvelops body
System.
Preferably, step 3) in the filler that adds be precipitated calcium carbonate or talcum powder.
Relative to prior art, the invention has the advantages that：
The present invention is taken with fento cellulose as retention and enhancements, and fento cellulose microstructure is in branch
Shape, branch degree is high, the wet-formed phase of papermaking mutually overlap joint can quantity of formation tie much larger than the fine network of common paper pulp fiber
Structure, can form the effectively catching to filler particles and envelope, significantly improve the retention of Fillers in Paper.Meanwhile, envelope body surface
The fento cellulose specific surface area in face is very big, and surface free hydroxyl group extremely enriches, and number can be formed each other and between fiber
The hydrogen bond of times common paper pulp fiber, solves the problems, such as that high levels of filler paper strength is poor.Finally, high adding preferably has been dissolved
Fill out the contradiction between paper strength and high-filling amount in technology.
【Specific embodiment】
A kind of fento cellulose envelope retention high-filling paper technology of the present invention, comprises the following steps：
1) first, industrial fibrillation cellulose products are diluted with water to the concentration that mass percent is 1%～5%, so
Carry out ultrasonication at normal temperatures afterwards, ultrasonic power is 300W, frequency 20kHz, 20～40min of process time.
2) by step 1) the fento cellulose after ultrasonication is concentrated into the concentration that mass percent is 10%, adopts
PFI fiberizers carry out fibrillating process, and it is 20000～60000 turns to process revolution, further improves the thin of fento cellulose
Fibrosis, make overall raw material form the high and uniform microfibre wire network of branch degree.
3) by step 2) fibrillating process after fento cellulose be diluted with water for mass percent be 2%～8%
Concentration, be subsequently adding filler --- precipitated calcium carbonate/talcum powder.1～5 second is stood after high shear force is well mixed, is formed
Filler/MFC preenvelop body disperse systems.Wherein, precipitated calcium carbonate/talcum powder accounts for total solid in filler/MFC preenvelop body disperse systems
Amount of substance percentage is 70%～90%.
4) add by the amount of solid quality percentage 0.02%～0.06% in filler/MFC preenvelop body disperse systems and help
Retention aid and filter PAMC, low shear mixing uniformly forms afterwards more stable filler/MFC enveloping solid disperse systems.
5) by step 4) in the filler/MFC enveloping solids disperse system that formed add in general chemistry slurry paper pulp and carry out low sheraing
Power is well mixed to form total dispersion system.Wherein, total score after solid content is to add paper pulp in filler/MFC enveloping solid disperse systems
Dissipate 45%～70% of solid content gross mass in system.Then being rapidly added in sheet forming apparatus carries out manufacture paper with pulp shaping, drying.Obtain final product
To the high-filling paper of fento cellulose envelope retention.
Embodiment 1
A kind of fento cellulose envelope retention high-filling paper technology, comprises the following steps：
1) first, industrial fibrillation cellulose products are diluted with water to the concentration that mass percent is 1%, then normal
Carry out ultrasonication under temperature, ultrasonic power is 300W, frequency 20kHz, process time 20min.
2) by step 1) the fento cellulose after ultrasonication is concentrated into the concentration that mass percent is 10%, adopts
PFI fiberizers carry out fibrillating process, and it is 60000 turns to process revolution, further improves the fibrillating of fento cellulose
Degree, makes overall raw material form the high and uniform microfibre wire network of branch degree.
3) by step 2) fibrillating process after fento cellulose be diluted with water for mass percent be 8% it is dense
Degree, is subsequently adding filler --- precipitated calcium carbonate.1～5 second is stood after high shear force is well mixed, filler/MFC is formed and is wrapped in advance
Network body disperse system.Wherein, it is 70% that precipitated calcium carbonate accounts for total solid mass percent in filler/MFC preenvelop body disperse systems.
4) retention and drainage aid agent is added by the amount of solid quality percentage 0.02% in filler/MFC preenvelop body disperse systems
PAMC, low shear mixing uniformly forms afterwards more stable filler/MFC enveloping solid disperse systems.
5) by step 4) in the filler/MFC enveloping solids disperse system that formed add in general chemistry slurry paper pulp and carry out low sheraing
Power is well mixed to form total dispersion system.Wherein, total score after solid content is to add paper pulp in filler/MFC enveloping solid disperse systems
Dissipate 45% of solid content gross mass in system.Then being rapidly added in sheet forming apparatus carries out manufacture paper with pulp shaping, drying.Obtain fento
The high-filling paper of cellulose envelope retention.
Embodiment 2
A kind of fento cellulose envelope retention high-filling paper technology, comprises the following steps：
1) first, industrial fibrillation cellulose products are diluted with water to the concentration that mass percent is 3%, then normal
Carry out ultrasonication under temperature, ultrasonic power is 300W, frequency 20kHz, process time 40min.
2) by step 1) the fento cellulose after ultrasonication is concentrated into the concentration that mass percent is 10%, adopts
PFI fiberizers carry out fibrillating process, and it is 20000 turns to process revolution, further improves the fibrillating of fento cellulose
Degree, makes overall raw material form the high and uniform microfibre wire network of branch degree.
3) by step 2) fibrillating process after fento cellulose be diluted with water for mass percent be 5% it is dense
Degree, is subsequently adding filler --- precipitated calcium carbonate.1～5 second is stood after high shear force is well mixed, filler/MFC is formed and is wrapped in advance
Network body disperse system.Wherein, it is 90% that precipitated calcium carbonate accounts for total solid mass percent in filler/MFC preenvelop body disperse systems.
4) retention and drainage aid agent is added by the amount of solid quality percentage 0.03% in filler/MFC preenvelop body disperse systems
PAMC, low shear mixing uniformly forms afterwards more stable filler/MFC enveloping solid disperse systems.
5) by step 4) in the filler/MFC enveloping solids disperse system that formed add in general chemistry slurry paper pulp and carry out low sheraing
Power is well mixed to form total dispersion system.Wherein, total score after solid content is to add paper pulp in filler/MFC enveloping solid disperse systems
Dissipate 70% of solid content gross mass in system.Then being rapidly added in sheet forming apparatus carries out manufacture paper with pulp shaping, drying.Obtain fento
The high-filling paper of cellulose envelope retention.
Embodiment 3
A kind of fento cellulose envelope retention high-filling paper technology, comprises the following steps：
1) first, industrial fibrillation cellulose products are diluted with water to the concentration that mass percent is 5%, then normal
Carry out ultrasonication under temperature, ultrasonic power is 300W, frequency 20kHz, process time 30min.
2) by step 1) the fento cellulose after ultrasonication is concentrated into the concentration that mass percent is 10%, adopts
PFI fiberizers carry out fibrillating process, and it is 50000 turns to process revolution, further improves the fibrillating of fento cellulose
Degree, makes overall raw material form the high and uniform microfibre wire network of branch degree.
3) by step 2) fibrillating process after fento cellulose be diluted with water for mass percent be 8% it is dense
Degree, is subsequently adding filler --- talcum powder.1～5 second is stood after high shear force is well mixed, filler/MFC preenvelop bodies are formed
Disperse system.Wherein, it is 80% that talcum powder accounts for total solid mass percent in filler/MFC preenvelop body disperse systems.
4) retention and drainage aid agent is added by the amount of solid quality percentage 0.06% in filler/MFC preenvelop body disperse systems
PAMC, low shear mixing uniformly forms afterwards more stable filler/MFC enveloping solid disperse systems.
5) by step 4) in the filler/MFC enveloping solids disperse system that formed add in general chemistry slurry paper pulp and carry out low sheraing
Power is well mixed to form total dispersion system.Wherein, total score after solid content is to add paper pulp in filler/MFC enveloping solid disperse systems
Dissipate 55% of solid content gross mass in system.Then being rapidly added in sheet forming apparatus carries out manufacture paper with pulp shaping, drying.Obtain fento
The high-filling paper of cellulose envelope retention.
Embodiment 4
A kind of fento cellulose envelope retention high-filling paper technology, comprises the following steps：
1) first, industrial fibrillation cellulose products are diluted with water to the concentration that mass percent is 4%, then normal
Carry out ultrasonication under temperature, ultrasonic power is 300W, frequency 20kHz, process time 40min.
2) by step 1) the fento cellulose after ultrasonication is concentrated into the concentration that mass percent is 10%, adopts
PFI fiberizers carry out fibrillating process, and it is 45000 turns to process revolution, further improves the fibrillating of fento cellulose
Degree, makes overall raw material form the high and uniform microfibre wire network of branch degree.
3) by step 2) fibrillating process after fento cellulose be diluted with water for mass percent be 6% it is dense
Degree, is subsequently adding filler --- precipitated calcium carbonate.1～5 second is stood after high shear force is well mixed, filler/MFC is formed and is wrapped in advance
Network body disperse system.Wherein, it is 75% that precipitated calcium carbonate accounts for total solid mass percent in filler/MFC preenvelop body disperse systems.
4) retention and drainage aid agent is added by the amount of solid quality percentage 0.05% in filler/MFC preenvelop body disperse systems
PAMC, low shear mixing uniformly forms afterwards more stable filler/MFC enveloping solid disperse systems.
5) by step 4) in the filler/MFC enveloping solids disperse system that formed add in general chemistry slurry paper pulp and carry out low sheraing
Power is well mixed to form total dispersion system.Wherein, total score after solid content is to add paper pulp in filler/MFC enveloping solid disperse systems
Dissipate 60% of solid content gross mass in system.Then being rapidly added in sheet forming apparatus carries out manufacture paper with pulp shaping, drying.Obtain fento
The high-filling paper of cellulose envelope retention.
Embodiment 5
A kind of fento cellulose envelope retention high-filling paper technology, comprises the following steps：
1) first, industrial fibrillation cellulose products are diluted with water to the concentration that mass percent is 2%, then normal
Carry out ultrasonication under temperature, ultrasonic power is 300W, frequency 20kHz, process time 30min.
2) by step 1) the fento cellulose after ultrasonication is concentrated into the concentration that mass percent is 10%, adopts
PFI fiberizers carry out fibrillating process, and it is 35000 turns to process revolution, further improves the fibrillating of fento cellulose
Degree, makes overall raw material form the high and uniform microfibre wire network of branch degree.
3) by step 2) fibrillating process after fento cellulose be diluted with water for mass percent be 8% it is dense
Degree, is subsequently adding filler --- talcum powder.1～5 second is stood after high shear force is well mixed, filler/MFC preenvelop bodies are formed
Disperse system.Wherein, it is 80% that talcum powder accounts for total solid mass percent in filler/MFC preenvelop body disperse systems.
4) retention and drainage aid agent is added by the amount of solid quality percentage 0.02% in filler/MFC preenvelop body disperse systems
PAMC, low shear mixing uniformly forms afterwards more stable filler/MFC enveloping solid disperse systems.
5) by step 4) in the filler/MFC enveloping solids disperse system that formed add in general chemistry slurry paper pulp and carry out low sheraing
Power is well mixed to form total dispersion system.Wherein, total score after solid content is to add paper pulp in filler/MFC enveloping solid disperse systems
Dissipate 50% of solid content gross mass in system.Then being rapidly added in sheet forming apparatus carries out manufacture paper with pulp shaping, drying.Obtain fento
The high-filling paper of cellulose envelope retention.
The present invention for add in paper filler can cause paper strength loss and high-filling during filler retention
A low paper technology difficult problem.With fento cellulose as retention and enhancements, fento cellulose branch degree is high, wet in papermaking
Method shaping phase mutually overlap joint can quantity of formation much larger than the fine network structure of common paper pulp fiber, be conducive to filler grain
Retention and envelope, significantly improve the retention of Fillers in Paper.Additionally, fento cellulose specific surface area is greatly, and surface is swum
Extremely enrich from hydroxyl, the hydrogen bond for being several times as much as conventional cellulosic fibers can be formed, solve high levels of filler paper strength difference
Problem.Finally, the contradiction in high-filling technology between paper strength and high-filling amount has preferably been dissolved.The price of filler is far low
In paper pulp fiber, so, this invention advantageously reduces the production cost of paper, improves the profit of enterprise, more alleviates papermaking
The situation of industry fibrous raw material resource scarcity.Under present invention process：When filer content is 54.18%, paper tensile index reaches
30.21N·m/g；Under common process：When filer content is 24.79%, paper tensile index is 29.63Nm/g.Institute of the present invention
The filler content of preparation may be up to more than 54%, while it is 25% that intensity still can reach filer content under conventional paper-making processes
Paper strength.
Claims (1)
1. a kind of fento cellulose envelope retention high-filling paper technology, it is characterised in that comprise the following steps：
1) first, industrial fibrillation cellulose products are diluted with water to the concentration that mass percent is 1%～5%, Ran Hou
Ultrasonication is carried out under normal temperature；The parameter of ultrasonication is：Ultrasonic power is 300W, frequency 20kHz, process time 20
～40min；
2) by step 1) the fento cellulose after ultrasonication is concentrated into the concentration that mass percent is 10%, using PFI
Fiberizer carries out fibrillating process；The process revolution for controlling PFI fiberizers is 20000～60000 turns；
3) by step 2) fibrillating process after fento cellulose be diluted with water for mass percent be 2%～8% it is dense
Degree, is subsequently adding filler；Stand after high shear force is well mixed and form filler/MFC preenvelop body disperse systems；Wherein, filler
It is 70%～90% to account for total solid mass percent in filler/MFC preenvelop body disperse systems；Described filler is precipitated calcium carbonate
Or talcum powder；
4) retention is added to help by the amount of solid quality percentage 0.02%～0.06% in filler/MFC preenvelop body disperse systems
Filtering agent PAMC, low shear mixing uniformly forms afterwards filler/MFC enveloping solid disperse systems；
5) by step 4) in the filler/MFC enveloping solids disperse system that formed add that low-shearing force mixing is carried out in chemical pulp paper pulp is equal
Even formation total dispersion system；Wherein, solid content is solid content gross mass in total dispersion system in filler/MFC enveloping solid disperse systems
45%～70%；Then being rapidly added in sheet forming apparatus carries out manufacture paper with pulp shaping, drying, obtains fento cellulose envelope and helps
The high-filling paper for staying；The high-filling Fillers in Paper content of obtained fento cellulose envelope retention is 54.18%, paper
Tensile index is 30.21Nm/g；
Step 3) in high shear force be well mixed after stand 1～5 second formed filler/MFC preenvelop body disperse systems.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104863008B (en) * | 2015-04-23 | 2018-04-17 | 中国制浆造纸研究院有限公司 | A kind of method that paper opacity is improved using the cellulose modified filler of fibrillation |
| BR112018070846B1 (en) * | 2016-04-22 | 2023-04-11 | Fiberlean Technologies Limited | FIBERS COMPRISING MICROFIBRILLATED PULP AND METHODS OF MANUFACTURING FIBERS AND NONWOVEN MATERIALS THEREOF |
| CA3059535A1 (en) * | 2017-04-21 | 2018-10-25 | Fiberlean Technologies Limited | Microfibrillated cellulose with enhanced properties and methods of making the same |
| CN108277686A (en) * | 2018-03-09 | 2018-07-13 | 天津科技大学 | A method of pretreatment calcium carbonate and its raising paper retention |
| CN108797182A (en) * | 2018-06-14 | 2018-11-13 | 华南理工大学 | A method of paper pulp fiber retention and intensity are improved based on fibrillation fiber |
| CN113106775B (en) * | 2020-01-10 | 2023-05-12 | 中国制浆造纸研究院有限公司 | Method for improving papermaking drainage performance by adopting microfibrillated fibers |
| CN112695563A (en) * | 2020-12-31 | 2021-04-23 | 江苏理文造纸有限公司 | Treatment process for waste paper fiber microfibrillation |
| CN114808524A (en) * | 2022-04-08 | 2022-07-29 | 金光纸业(中国)投资有限公司 | Paper and preparation method thereof |
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| FI126513B (en) * | 2011-01-20 | 2017-01-13 | Upm Kymmene Corp | Method for improving strength and retention and paper product |
| CN103966896B (en) * | 2013-02-05 | 2016-05-18 | 金东纸业（江苏）股份有限公司 | Modified filler and preparation method thereof, applies its slurry and paper |
| CN103966888B (en) * | 2013-02-05 | 2016-08-03 | 金东纸业（江苏）股份有限公司 | Complex and preparation method thereof, applies its slurry and paper |
| CN103966889B (en) * | 2013-02-05 | 2016-03-09 | 金东纸业（江苏）股份有限公司 | Compound and preparation method thereof, applies its slurry and paper |
| CN103966890B (en) * | 2013-02-05 | 2017-03-22 | 金东纸业（江苏）股份有限公司 | papermaking process |
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