CN108316047A - The secondary fibre paper and the preparation method and application thereof of cellulose nanometer fibril enhancing - Google Patents
The secondary fibre paper and the preparation method and application thereof of cellulose nanometer fibril enhancing Download PDFInfo
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- CN108316047A CN108316047A CN201810263182.XA CN201810263182A CN108316047A CN 108316047 A CN108316047 A CN 108316047A CN 201810263182 A CN201810263182 A CN 201810263182A CN 108316047 A CN108316047 A CN 108316047A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- 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
- D21H11/14—Secondary 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/50—Spraying or projecting
-
- 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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
Abstract
The invention belongs to pulp technology for making paper, and in particular to a kind of secondary fibre paper and the preparation method and application thereof of cellulose nanometer fibril enhancing.The preparation method includes the following steps：Using secondary stock as raw material, the gauged secondary fibre paper of mesh of manufacturing paper with pulp after discongesting obtains l Water Paper page after being sucked by vacuum drainage；Using cellulose nanometer fibril suspension as raw material, cellulose nanometer fibril is atomized by atomising device；Cellulose nanometer fibril after atomization is sprayed at secondary stock l Water Paper page frame table, and keeps a period of time under vacuum, then takes off paper, it is dry, obtain cellulose nanometer fibril enhancing secondary fibre paper.Nano-cellulose atomizing spraying method is made nano-cellulose be more evenly distributed in paper by the method for the invention, and process is more simple and efficient, and reduces the loss of nano-cellulose, while quickly increasing the intensity of paper.This method is easy to operate, simple and practicable, is suitble to the large-scale production of factory, has extensive industrial applications foreground.
Description
Technical field
The invention belongs to pulp technology for making paper, and in particular to a kind of secondary fibre paper of cellulose nanometer fibril enhancing and its
Preparation method and application.
Background technology
With the progress of the development and science and technology of society, the environmental consciousness of people is gradually reinforced, and paper has been in people's life
The indispensable consumer goods, waste paper recycle as the effective way of timber resources is saved.Waste paper refers in production and living
It is middle through use and discarded recyclable regenerative resource, including various high-grade paper, yellow plate paper, litter decoration, trimming paper, be packaged paper,
Business unit's paper, engineering paper, books and periodicals newspaper etc..In the world, waste paper generally divides into that Europe is useless, U.S. useless and day useless three
Kind.In China, the cycling and reutilization degree of waste paper is relatively low compared with western developed country.Also, for China, the forest reserves
The practical problems such as per capita rate is relatively low, and using energy source is in short supply, and paper industry is seriously polluted seriously restrict China's paper industry
Development, therefore, develop efficient secondary stock recycle utilization have highly important economic value and social effect.
In recent years, the reuse of secondary stock, which has become, solves plupwood resource scarcity and reduction paper industry pollutional load
Main path.At present waste paper recycling paper manufacturing streams be roughly divided into discongest, deinking, several parts such as removal of impurities and copy paper, but two
The problems such as secondary fiber is shorter, paper strength is relatively low and drainage is slower also constrains the development of pure regenerated papermaking.Chinese patent
2016105324025 disclose a kind of method using regenerated papermaking, by deinking and decolorization, purify secondary stock papermaking,
Effectively removing ink particle carries out waste paper recycling.Chinese patent 2012104580967 discloses a kind of low-cost high-purity
Regenerated papermaking new process obtains the higher deinking paper pulp of purity, last and quotient by the deinking to waste paper with multistage slagging-off
Product wood pulp mixed copy papermaking.Chinese patent 2017204729495 discloses a kind of method improving regenerated paper pulp performance, using agricultural
Crop material prepares nano-cellulose after chemical method boiling defibrination and starches interior addition, increases the compression strength of paper and resistance to broken
Degree, but a large amount of chemical assistant, such as sodium sulfite, sodium tripolyphosphate and sulfamic acid are consumed, not only increase complexity
Process equipment, and waste liquid is produced, aggravate carrying capacity of environment.Chinese patent 2015103964075 discloses a kind of based on nanometer
The method that microcrystalline cellulose improves fiber strength of waste paper, nano-cellulose is prepared using strong acid (sulfuric acid of 65wt.%) Hydrolyze method
The intensity of whisker reinforcement waste paper fibre, this method can will produce a large amount of highly concentrated spent acid, to equipment requirement harshness, it is difficult to which industrialization is answered
With.Chinese patent 201310079203X discloses a kind of method increasing slurry paper strength and slurry obtained by this method
And paper, addition cationic starch, cationic polyacrylamide and amphiprotic polyacrylamide etc. increase nano-cellulose will in
Retention effect when addition, it is final to enhance secondary stock papermaking.Although above-mentioned report can obtain the higher secondary fibre paper of purity
Slurry, but it is relatively low with pure secondary stock papermaking strength, and current adding method is addition in slurry, due to nano-cellulose grain size
It is minimum, it needs additionally to supplement and adds a large amount of retention agent to increase the retention of nano-cellulose, increase industrial applications
Therefore cost develops a kind of method of the enhancing secondary stock paper intensity of new simple, efficient, energy saving, easy industrialization promotion
It is very necessary.
Invention content
To solve the disadvantage that the prior art and shortcoming, the primary purpose of the present invention is that providing a kind of cellulose nanometer
The preparation method of the secondary fibre paper of fibril enhancing.
Another object of the present invention is to provide the secondary fibres that cellulose nanometer fibril made from above-mentioned preparation method enhances
Tie up paper.
It is still another object of the present invention to provide the applications of the secondary fibre paper of above-mentioned cellulose nanometer fibril enhancing.
The object of the invention is achieved through the following technical solutions：
A kind of preparation method of the secondary fibre paper of cellulose nanometer fibril enhancing, includes the following steps：
(1) with secondary stock (secondary stock) for raw material, the gauged secondary fibre paper of mesh of manufacturing paper with pulp after discongesting, vacuum suction filter
L Water Paper page is obtained after water；
(2) using cellulose nanometer fibril (CNF) suspension of certain mass concentration as raw material, by atomising device by fiber
Plain nanofibrils atomization；
(3) cellulose nanometer fibril after atomization is sprayed at secondary stock l Water Paper page frame table, and in certain vacuum degree
Under the conditions of kept for a period of time, then take off paper, it is dry, obtain cellulose nanometer fibril enhancing secondary fibre paper.
Preferably, secondary stock described in step (1) is the secondary fibres such as recycled newsprint pulp, useless writing paper pulp, useless boxboard paper pulp
Tie up one or more of slurry；
Preferably, condition is discongested as 1000~20000 turns/min at room temperature described in step (1)；Preferably 10000 turns/
min；
Preferably, the quantification of 20~100g/m of target of the secondary fibre paper described in step (1)2；Preferably 80g/m2；
Preferably, in the vacuum suction drainage operation described in step (1), vacuum degree is -0.01~0.2MPa；Preferably-
0.1MPa；
Preferably, the mass fraction of the cellulose nanometer fibril suspension described in step (2) is 0.01%~50%, fiber
A diameter of 20~40nm of plain nanofibrils, length are 1~2 μm, the absolute dry mass ratio (1~20) of CNF and secondary stock:
(80~99).
Preferably, the atomization condition described in step (2) is：At room temperature, spray gun pressure is 0.01~1.5MPa.
Preferably, the vacuum degree described in step (3) is -0.01~0.2MPa.
Preferably, the time kept under certain vacuum degree condition described in step (3) is 1~30min.
Preferably, the drying condition described in step (3) is：Vacuum degree is -0.01~-0.5MPa, is dried at 80~105 DEG C
5~30min.
The secondary fibre paper of above-mentioned cellulose nanometer fibril enhancing has good mechanical performance, can be applied to papermaking
And packaging industry.
Compared with prior art, the present invention has the following advantages and beneficial effects：
Application process of traditional nano-cellulose in papermaking is mostly addition in starching, the outer coating of slurry or sizing, there is no and borrows
The vacuum resorption helped after papermaking machine dewatering makes the nano-cellulose spraying of atomization be adsorbed in wet pulp fibrous inside, through drying
Achieve the effect that increase paper strength afterwards.Nano-cellulose used adds Mechanical Method to prepare using biological enzymolysis, environmental friendly no dirt
Dye, can be extended to industrialized production and application.The content of present invention utilizes cellulose nanometer fibril (CNF) high-strength adsorptivity, compares table
The big feature of area, is sprayed at l Water Paper page frame table after being atomized CNF by atomising device, by being applied below l Water Paper page forming net
Add vacuum power (as shown in Figure 1), CNF is adsorbed into secondary fibre paper, after paper drying, the CNF and secondary stock of absorption
Firm Hydrogenbond is formed after drying between paper pulp, increases the mechanical strength of secondary fibre paper, air permeability is reduced, for producing
Newsprint, boxboard etc..Nano-cellulose atomizing spraying method is made nano-cellulose divide in paper by the method for the invention
Evenly, process is more simple and efficient cloth, reduces the loss of nano-cellulose, while quickly increasing the intensity of paper.This method is grasped
Facilitate, it is simple and practicable, it is suitble to the large-scale production of factory, there is extensive industrial applications foreground.The method of the invention
Expand the application range of cellulose nanometer fibril.
Description of the drawings
Fig. 1 is the preparation flow figure of the secondary fibre paper of cellulose nanometer fibril of the present invention enhancing.
Fig. 2 is the preparation flow figure of the secondary fibre paper of cellulose nanometer fibril of the present invention enhancing.
Fig. 3 is the tensile strength of each embodiment paper, bursting strength variation diagram.
Fig. 4 is the air permeability of each embodiment paper, quantitative variation diagram.
Specific implementation mode
With reference to embodiment and attached drawing, the present invention is described in further detail, but embodiments of the present invention are unlimited
In this.Room temperature described in following embodiment operation is 25 ± 1 DEG C.
Each starting material is commercially available or is prepared according to art methods in preparation method of the present invention.Implement
Secondary stock (secondary stock) in example is provided by Shandong Hua Tai Paper Co., Ltd.
The cellulose nanometer fibril (CNF) that the present invention uses can be prepared according to the relevant report before us (Chen Kefu,
A kind of preparation method of micro-nano cellulose [P] .2016.CN106367455A of Zeng Jingsong, Wang Bin, Li Jinpeng), cellulose is received
The diameter and length of rice fibril (micro-nano cellulose i.e. described in patent CN106367455A) can be by changing treatment conditions
It is controlled.
In Examples 1 to 5,9, cellulose nanometer fibril (CNF) preparation process used is as follows：By cellulose material and delay
(mass ratio of bone dry fiber and buffer solution is 1 to fliud flushing:20, pH=4~6) it mixes, biological enzyme is added, and (every gram of bone dry fiber element adds
Enter 10IU biological enzyme), 2~12h is shaken under the conditions of 40~55 DEG C, is obtained cellulose suspension, is gone out through filtration washing and high temperature
After work in ultramicron stuff grinder miniaturization defibrination (abrasive disk space be -100 μm~100 μm), obtain micrometer fibers element slurries；Into
One step is handled for several times (1~20 time) by Microfluidizer, obtains 5~30nm of diameter, 500~1000nm of length, draw ratio
CNF suspension more than 100.
Embodiment 1
A kind of secondary fibre paper of cellulose nanometer fibril enhancing, preparation method are as follows：
(1) appropriate over dry recycled newsprint pulp is taken, rear copy paper is discongested with 6000 turns/min in fluffer, vacuum under -0.1MPa
L Water Paper page is obtained after suction drainage.
(2) cellulose nanometer fibril (CNF) suspension pneumatic nebulizer that mass concentration is 0.1wt.% is existed
It is atomized under 0.2MPa, the absolute dry mass ratio 1 of CNF and paper pulp fiber:99, manufacture paper with pulp quantification of 80g/m2Secondary fibre paper
(i.e. per square meter paper in paper pulp fiber and the nanofiber of addition absolute dry mass and be 80g, similarly hereinafter).
(3) vacuum pump is opened, adjusts and the CNF after atomization is sprayed at secondary stock l Water Paper page frame table, and 0.1MPa's
30min is kept under vacuum degree, then takes off paper, and the dry 15min at -0.09MPa, 80 DEG C obtains cellulose nanometer fibril enhancing
Secondary fibre paper.
Embodiment 2
A kind of secondary fibre paper of cellulose nanometer fibril enhancing, preparation method are as follows：
(1) take appropriate over dry is useless to write paper pulp, after being discongested with 5000 turns/min in fluffer, vacuum is taken out under -0.1MPa
L Water Paper page is obtained after suction strainer water.
(2) by mass concentration be 10wt.% cellulose nanometer fibril (CNF) suspension pneumatic nebulizer in 1.5MPa
Under be atomized, the absolute dry mass ratio 5 of CNF and paper pulp fiber:95, manufacture paper with pulp quantification of 80g/m2Secondary fibre paper.
(3) vacuum pump is opened, adjusts and the CNF after atomization is sprayed at secondary stock l Water Paper page frame table, and 0.5MPa's
1min is kept under vacuum degree, then takes off paper, and the dry 5min at -0.3MPa, 105 DEG C obtains cellulose nanometer fibril enhancing two
Secondary fibrous paper.
Embodiment 3
A kind of secondary fibre paper of cellulose nanometer fibril enhancing, preparation method are as follows：
(1) take appropriate over dry recycled newsprint pulp, after being discongested with 10000 turns/min in fluffer, be sucked by vacuum under -0.2MPa
L Water Paper page is obtained after drainage.
(2) by mass concentration be 50wt.% cellulose nanometer fibril (CNF) suspension pneumatic nebulizer in 1.5MPa
Under be atomized, the absolute dry mass ratio 10 of CNF and paper pulp fiber:90, manufacture paper with pulp quantification of 80g/m2Secondary fibre paper.
(3) vacuum pump is opened, adjusts and the CNF after atomization is sprayed at secondary stock l Water Paper page frame table, and in -0.01MPa
Vacuum degree under keep 1min, then take off paper, the dry 15min at -0.01MPa, 90 DEG C obtains cellulose nanometer fibril enhancing
Secondary fibre paper.
Embodiment 4
A kind of secondary fibre paper of cellulose nanometer fibril enhancing, preparation method are as follows：
(1) 1.88g over dry recycled newsprint pulps are taken, after being discongested with 10000 turns/min in fluffer, vacuum is taken out under -0.1MPa
L Water Paper is obtained after suction strainer water.
(2) cellulose nanometer fibril (CNF) suspension pneumatic nebulizer that mass concentration is 0.5wt.% is existed
It is atomized under 0.1MPa, the absolute dry mass ratio 20 of CNF and paper pulp fiber:80, manufacture paper with pulp quantification of 80g/m2Secondary stock
Paper.
(3) vacuum pump is opened, adjusts and the CNF after atomization is sprayed at secondary stock l Water Paper page frame table, and 0.1MPa's
10min is kept under vacuum degree, then takes off paper, and the dry 15min at -0.1MPa, 95 DEG C obtains cellulose nanometer fibril enhancing two
Secondary fibrous paper.
Embodiment 5：Comparative example
(1) take appropriate over dry recycled newsprint pulp, after being discongested with 10000 turns/min in fluffer, be sucked by vacuum under -0.1MPa
L Water Paper page is obtained after drainage.
(2) cellulose nanometer fibril (CNF) suspension pneumatic nebulizer that mass concentration is 0.5wt.% is existed
It is atomized under 1.6MPa, the absolute dry mass ratio 5 of CNF and paper pulp fiber:95, manufacture paper with pulp quantification of 80g/m2Secondary stock
Paper.
(3) vacuum pump is opened, adjusts and the CNF after atomization is sprayed at secondary stock l Water Paper page frame table, and 0.1MPa's
10min is kept under vacuum degree, then takes off paper, and the dry 15min at -0.1MPa, 95 DEG C obtains cellulose nanometer fibril enhancing two
Secondary fibrous paper.
Ejiction opening pressure is excessive after pressure is more than 1.5MPa, and since wet paper strength is low, atomising air is easy to wet
Paper is broken, and occurs that page is irregular or to take off paper imperfect, eventually leads to that take off paper incomplete.
Embodiment 6：Non-atomized spraying comparative example
(1) take appropriate over dry recycled newsprint pulp, after being discongested with 10000 turns/min in fluffer, be sucked by vacuum under -0.3MPa
L Water Paper page is obtained after drainage.
(2) by mass concentration be 0.5wt.% cellulose nanometer fibril (CNF) suspension pneumatic nebulizer in 0MPa
Under be slowly added dropwise in l Water Paper page frame table, the absolute dry mass ratio 5 of CNF and paper pulp fiber:95, manufacture paper with pulp quantification of 80g/m2It is secondary
Fibrous paper.
(3) vacuum pump is opened, adjusts and the CNF after atomization is sprayed at secondary stock l Water Paper page frame table, and 0.3MPa's
10min is kept under vacuum degree, then takes off paper, and the dry 15min at -0.1MPa, 95 DEG C obtains cellulose nanometer fibril enhancing two
Secondary fibrous paper.
The paper that the method obtains leads to l Water Paper page frame table fiber due to free-falling collision l Water Paper page under drop gravity
It is destroyed, influences the evenness of paper.
Embodiment 7：Spray the comparative example of commercially available nano-cellulose
(1) take appropriate over dry recycled newsprint pulp, after being discongested with 10000 turns/min in fluffer, be sucked by vacuum under -0.1MPa
L Water Paper page is obtained after drainage.
(2) the commercially available nano-cellulose (being purchased from Guilin Qi Hong Science and Technology Ltd.s) that mass concentration is 0.5wt.% is suspended
Liquid is atomized with pneumatic nebulizer at 0.5MPa, the absolute dry mass ratio 5 of nano-cellulose and paper pulp fiber:95, it manufactures paper with pulp
Quantification of 80g/m2Secondary fibre paper.
(3) vacuum pump is opened, adjusts and the CNF after atomization is sprayed at secondary stock l Water Paper page frame table, and 0.2MPa's
10min is kept under vacuum degree, then takes off paper, and the dry 15min at -0.15MPa, 95 DEG C obtains cellulose nanometer fibril enhancing
Secondary fibre paper.
Embodiment 8：Spray the comparative example of commercially available microcrystalline cellulose
(1) take appropriate over dry recycled newsprint pulp, after being discongested with 10000 turns/min in fluffer, be sucked by vacuum under -0.1MPa
L Water Paper page is obtained after drainage.
(2) the commercially available microcrystalline cellulose suspension that mass concentration is 0.5wt.% (is had purchased from thousand abundant biotechnology of Zhejiang
Limit company) it is atomized at 0.1MPa with pneumatic nebulizer, the absolute dry mass ratio 5 of microcrystalline cellulose and paper pulp fiber:95,
Manufacture paper with pulp quantification of 80g/m2Secondary fibre paper.
(3) vacuum pump is opened, adjusts and the CNF after atomization is sprayed at secondary stock l Water Paper page frame table, and 0.1MPa's
10min is kept under vacuum degree, then takes off paper, and the dry 15min at -0.1MPa, 95 DEG C obtains cellulose nanometer fibril enhancing two
Secondary fibrous paper.
Embodiment 9：The contrast test of addition CNF in slurry
Appropriate over dry recycled newsprint pulp is taken, the cellulose nanometer fibril that mass concentration is 0.5wt.% is added in fluffer
(CNF) the absolute dry mass ratio 5 of suspension, CNF and paper pulp fiber:95, manufacture paper with pulp quantification of 80g/m2Secondary fibre paper.With
After 10000 turns/min is discongested, 10min is kept after being sucked by vacuum drainage under -0.1MPa, paper is then taken off, at -0.1MPa, 95 DEG C
Dry 15min obtains cellulose nanometer fibril enhancing secondary fibre paper.
Embodiment 10：The contrast test of addition market purchase nano-cellulose in slurry
Appropriate over dry recycled newsprint pulp is taken, the nano-cellulose that mass concentration is 0.5wt.% is added in fluffer and (is purchased from
Guilin Qi Hong Science and Technology Ltd.s) suspension, nano-cellulose and paper pulp fiber absolute dry mass ratio 5:95, it manufactures paper with pulp quantification of
80g/m2Secondary fibre paper.After being discongested with 10000 turns/min, 10min is kept after being sucked by vacuum drainage under -0.1MPa, then
Paper is taken off, the dry 15min at -0.1MPa, 95 DEG C obtains cellulose nanometer fibril enhancing secondary fibre paper.
Embodiment 11：By the contrast test of interior addition microcrystalline cellulose
Appropriate over dry recycled newsprint pulp is taken, the microcrystalline cellulose that mass concentration is 1wt.% is added in fluffer and (is purchased from Zhejiang
The bio tech ltd Jiang Qianyu) suspension, microcrystalline cellulose and paper pulp fiber absolute dry mass ratio 5:95, it manufactures paper with pulp quantification of
80g/m2Secondary fibre paper.After being discongested with 10000 turns/min, 10min is kept after being sucked by vacuum drainage under -0.1MPa, then
Paper is taken off, the dry 15min at -0.1MPa, 95 DEG C obtains cellulose nanometer fibril enhancing secondary fibre paper.
The physical property of the secondary fibre paper of cellulose nanometer fibril enhancing prepared by above-described embodiment detects example
The tensile strength of paper is according to GB standard GB/T453-2002 in embodiment, in L＆W CE062 tensile strength instrument
On be detected；Bursting strength is detected according to GB standard GB/T454-2002 on L＆W CE180 burst testers；
Tearability is measured according to GB standard GB/T455-2002 on 009 tearability instrument of L＆W；Substance is with reference to GB standard
GB/T451.2-2002 judges the retention of nano-cellulose by detecting Substance.
By Fig. 3 and Fig. 4 as it can be seen that when cellulose nanometer fibril can be obviously improved secondary stock at paper mechanical performance, this
The invention spraying method can be obviously improved retention of the cellulose in paper.The target of copy paper is fixed in above-described embodiment
Amount is 80g/m2, but fiber has loss in actual mechanical process, and actual quantification is caused quantitatively to have a deviation than target, in Fig. 4
Quantitative numerical value is actual value, and quantitative variation reflects the variation of retention of the nanofibrils in paper to a certain extent,
Fig. 4 illustrates in spray coating method the result shows that quantifying for paper is apparently higher than in slurry that paper quantifies in addition embodiment in spraying embodiment
Nanofiber loss is less.With the increase of cellulose nanometer fibril concentration, the air permeability of secondary fibre paper is decreased obviously, CNF
Addition play the role of obstructing gas, tensile index and burst index be gradually increased, and the addition of CNF keeps pure secondary fibre paper strong
Degree improves nearly 1 times, and the potentiality with prodigious industrial applications can bring huge society once being applied to industrialized production
It can benefit and economic value.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (10)
1. a kind of preparation method of the secondary fibre paper of cellulose nanometer fibril enhancing, which is characterized in that include the following steps：
(1) using secondary stock as raw material, the gauged secondary fibre paper of mesh of manufacturing paper with pulp after discongesting obtains l Water Paper after being sucked by vacuum drainage
Page；
(2) using the cellulose nanometer fibril suspension of certain mass concentration as raw material, by atomising device by cellulose Nanowire
Silk atomization；
(3) cellulose nanometer fibril after atomization is sprayed at secondary stock l Water Paper page frame table, and in certain vacuum degree condition
Lower holding a period of time, paper is then taken off, it is dry, obtain cellulose nanometer fibril enhancing secondary fibre paper.
2. a kind of preparation method of the secondary fibre paper of cellulose nanometer fibril enhancing according to claim 1, feature
It is, secondary stock described in step (1) is one or more of recycled newsprint pulp, useless writing paper pulp, useless boxboard paper pulp.
3. a kind of preparation method of the secondary fibre paper of cellulose nanometer fibril enhancing according to claim 1, feature
It is, condition is discongested as 1000~20000 turns/min at room temperature described in step (1).
4. a kind of preparation method of the secondary fibre paper of cellulose nanometer fibril enhancing according to claim 1, feature
It is, the quantification of 20~100g/m of target of the secondary fibre paper described in step (1)2。
5. a kind of preparation method of the secondary fibre paper of cellulose nanometer fibril enhancing according to claim 1, feature
It is, in the vacuum suction drainage operation described in step (1), vacuum degree is -0.01~0.2MPa.
6. a kind of preparation method of the secondary fibre paper of cellulose nanometer fibril enhancing according to claim 1, feature
It is, the mass fraction of the cellulose nanometer fibril suspension described in step (2) is 0.01%~50%, cellulose nanometer fibril
A diameter of 20~40nm, length be 1~2 μm, the absolute dry mass ratio (1~20) of cellulose nanometer fibril and secondary stock:
(80~99).
7. a kind of preparation method of the secondary fibre paper of cellulose nanometer fibril enhancing according to claim 1, feature
It is, the atomization condition described in step (2) is：At room temperature, spray gun pressure is 0.01~1.5MPa.
8. a kind of preparation method of the secondary fibre paper of cellulose nanometer fibril enhancing according to claim 1, feature
It is, the vacuum degree described in step (3) is -0.01~0.2MPa；
The time kept under certain vacuum degree condition described in step (3) is 1~30min.
Drying condition described in step (3) is：Vacuum degree is -0.01~-0.5MPa, and 5~30min is dried at 80~105 DEG C.
9. a kind of secondary fibre paper of cellulose nanometer fibril enhancing, which is characterized in that it is by any one of claim 1 to 8 institute
A kind of preparation method of the secondary fibre paper for cellulose nanometer fibril enhancing stated is made.
10. application of the secondary fibre paper of the cellulose nanometer fibril enhancing described in claim 9 in papermaking and packaging industry.
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| CN110130150A (en) * | 2019-05-22 | 2019-08-16 | 济南圣泉集团股份有限公司 | A kind of paper and its preparation method and application |
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Application publication date: 20180724 |