CN106676922A - Method for preparing paper-based material from sodium hydroxide-anthraquinone pulp of fast-growing poplars through biochemical-process ECF (elemental chlorine-free) bleaching - Google Patents
Method for preparing paper-based material from sodium hydroxide-anthraquinone pulp of fast-growing poplars through biochemical-process ECF (elemental chlorine-free) bleaching Download PDFInfo
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- CN106676922A CN106676922A CN201611255105.7A CN201611255105A CN106676922A CN 106676922 A CN106676922 A CN 106676922A CN 201611255105 A CN201611255105 A CN 201611255105A CN 106676922 A CN106676922 A CN 106676922A
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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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/02—Chemical or chemomechanical or chemothermomechanical 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- 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
- D21C9/10—Bleaching ; Apparatus therefor
-
- 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
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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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a method for preparing paper-based material from sodium hydroxide-anthraquinone pulp of fast-growing poplars through biochemical-process ECF (elemental chlorine-free) bleaching. The method includes the steps of (1), preparing paper pulp from the sodium hydroxide-anthraquinone pulp of the fast-growing poplars through an ECF bleaching technology; (2), subjecting the prepared paper pulp to gradient beating so as to obtain three kinds of paper pulp with three beating degrees, wherein the beating degree of the first kind of paper pulp is 10-30 degrees SR, the beating degree of the second kind of paper pulp is 30-55 degrees SR and the beating degree of the third kind of paper pulp is 55-70 degrees SR; subjecting the mixed pulp to vat formation or pressing formation so as to obtain the paper-based material. The method has the advantages that through adoption of two critical technologies including a gradient beating technology and a self-adding technology, the shortcomings of a single beating technology in the prior art are overcome, additional additives are avoided, the prepared paper-based material is suitable for preparing multiple types of paper bases and paper bases for daily life in particular.
Description
Technical field
The invention belongs to pulp technology for making paper, and in particular to a kind of biochemical process ECF bleaching sodium hydroxide of Fast growth poplar
The method that anthraquinone slurry prepares paper base material.
Background technology
Since 2012, the total output of China's paper and cardboard has exceeded a quarter of global yield, is sure to occupy the first in the world.
With the fast development of China's paper industry, timber biological matter has become the main raw material(s) of China's pulp and paper industry, has accounted for
The 60% of raw material of papermaking fiber.With the continuous improvement of pulp and paper industry production technology level, leaf wood is in pulping and paper-making
Shared proportion is continued to increase.Currently, the extensive Fast growth poplar woods of northern China is begun to take shape, is sending out for pulp and paper industry
Good raw material has been laid in exhibition.With the development of society and science and technology, traditional paper and cardboard are being prepared using chemical pulp
Meanwhile, exploitation series prepares the new technique of paper base material, traditional paper industry is widened to new material industry, is traditional papermaking row
One new thinking of industry transition and upgrade and approach.
Due to paper pulp fiber it is very flexible, without containing unsegregated fibre bundle, these fibre bundles in the paper pulp of beating
Stiff, what is had is oversize, and what is had is too thick, lack it is necessary prescinds and separates, such as use its copy paper, then products obtained therefrom is loose, porous, table
Face is coarse, intensity is very low, it is impossible to meet use requirement；Accordingly, it would be desirable to carry out beating process, beating is using mechanism process
Float on the paper pulp fiber in water so as to required characteristic is produced on a papermaking machine with adaptation, and enable produced paper
Reach the operating process of prospective quality.The paper pulp fiber that beating is obtained should have good water filtering performance, should also make paper pulp
The exposed enough hydroxyls of fiber make molding paper base material possess enough hydrogen bond Covalent bonding togethers, make paper base material form one
Individual chain-shaped network structure staggeredly, it is ensured that the excellent physical strength of molding paper base material.But, existing methods of beating all makes
With single beating degree, the length of the corresponding fiber of different beating degrees, the distribution of wire-dividing broom purification degree are different, it is difficult to while ensureing
Good water filtering performance and physical strength.
In addition, to improve the spectrophotometric datas such as smoothness, the opacity of paper, generally will add in slurry and fill out
Material, such as precipitated calcium carbonate, ground calcium carbonate or Pulvis Talci etc., therefore, filler is the second largest raw material in addition to slurry in paper pulp.
But after adding filler, the applying glue of paper is thick, deflection and intensity can all decline, and especially by the paper of superpressure, fall is bigger.
Additionally, adding the easy dry linting of paper of filler, hair loss, these shortcomings also need to be made up by Booster and top sizing.
But the addition of a large amount of chemicals, making into, exist during Some paper sheets use potential potential safety hazard,
The addition of some chemicals causes paper not degradable, and certain harm can be caused to environment.
Present inventor is bleached there is provided a kind of sulfate pulp biochemical process ECF of Fast growth poplar in the research of early stage
Technique (ZL201310300120.9), by with the good Fast growth poplar chemical pulp of kraft cooking after enzyme pretreatment, so
After carry out one section of oxygen delignification O1, or one section of reinforced-oxygen bleaching Op, or one section of oxygen delignification O1With one section of reinforced-oxygen bleaching
O2p, ClO 2 bleaching D sections are subsequently carried out, then chelation treatment Q section, finally carry out one section of hydrogen peroxide bleaching P section, total drift
Sequence is XODQP, XOpDQP、XOpO2pThis bleaching process of DQP, does not produce harmful material, after bleached pulp terminates after bleaching
Pulp property it is excellent, pulp brightness can reach 86%ISO or so, stability higher than the pulp brightness after element chlorine free bleaching
It is higher.
The content of the invention
For above-mentioned prior art, it is an object of the invention to provide a kind of biochemical process ECF bleaching hydrogen-oxygens of Fast growth poplar
Change the method that sodium anthraquinone slurry prepares paper base material.The present invention on the basis of early-stage Study, using the sodium hydroxide anthracene of Fast growth poplar
Quinone slurry biochemical process ECF bleaching process obtain the high whiteness paper pulp of high-performance, be further improve paper pulp into paper
Can, technology is beaten and from adding technique using gradient, the new preparation technology of the paper base material of series high strength is obtained.
For achieving the above object, the present invention adopts following technical proposals：
A first aspect of the present invention, there is provided a kind of methods of beating of paper pulp, step are as follows：
(1) paper pulp is prepared using the bleaching process of the sodium hydroxide anthraquinone slurry biochemical process ECF of Fast growth poplar；
(2) paper pulp to preparing carries out gradient beating, obtains the paper pulp of three kinds of beating degrees, wherein：The first paper pulp is beaten
The degree of beating is 10-30 ° of SR, and the beating degree of second paper pulp is 30-55 ° of SR, and the beating degree of the third paper pulp is 55-70 ° of SR.
In step (1), the sodium hydroxide anthraquinone of Fast growth poplar starches the bleaching process referenced patent of biochemical process ECF
ZL201310300120.9 is carried out.
In step (2), it is preferred that beating degree points three kinds, the beating degree of the first paper pulp is 15-25 ° of SR, second paper pulp
Beating degree be 35-50 ° of SR, the beating degree of the third paper pulp is 65-70 ° of SR.
A second aspect of the present invention, there is provided prepared by a kind of biochemical process ECF bleaching sodium hydroxide anthraquinone slurries of Fast growth poplar
The method of paper base material, step are as follows：
(1) it is beaten by the methods of beating of above-mentioned paper pulp, the paper pulp of three kinds of beating degrees is obtained；
(2) by the first paper pulp, second paper pulp and the third paper pulp (5-30) in mass ratio：(60-85):(5-20) mix
Close, obtain mixed slurry；
(3) mixed slurry is copied into the type of making or compressing, obtains paper base material.
Preferably, in step (2), by the first paper pulp, second paper pulp and the third paper pulp (10-20) in mass ratio：
(65-70):(15-20) mix.
The paper base material that said method is prepared is also protection scope of the present invention.
The paper base material is made a living and applies flexibly paper base material, environmental protection package paper base material and white card body paper paper base material.
Preferably, the paper base material is made a living and applies flexibly paper base material.
The paper for daily use sill includes：Medicated napkin, toilet paper, tissue, lens paper etc..
The present invention design concept be：It is difficult to for single beating degree while ensureing asking for water filtering performance and physical strength
Topic, present invention firstly provides being beaten using gradient, the purpose of gradient beating is paper pulp is kept when paper base material is prepared
The good water filtering performance of paper pulp fiber, also to be caused the exposed enough hydroxyls of paper pulp fiber molding paper base material is possessed enough
Many hydrogen bond, Covalent bonding together so that paper base material forms a chain-shaped network structure staggeredly, it is ensured that molding paper base material is excellent
Good physical strength.
In addition, the gradient of the present invention is beaten the sodium hydroxide anthraquinone slurry biochemical process that targeted object is Fast growth poplar
Paper pulp prepared by ECF bleaching process, relative to paper pulp more energy-conservation prepared by traditional chemical method, this is adopted due to the present invention
Process of the paper pulp through wooden poly- enzyme, the hemicellulose small part degraded in paper pulp, bleaching medicinal liquid are caused deeper into when being impregnated with
Fiber softening, it is easier to be beaten more energy efficient, avoiding problems the increase of energy consumption that may be brought by gradient beating.
For the control of beating degree is optimized investigation when classification of the present invention also to gradient beating, every one-level are beaten,
As a result find：Point three gradients are beaten, and the beating degree of the first order is controlled to 10-30 ° of SR, the paper pulp fiber of this grade of slurry compared with
The long, lesser extent of wire-dividing broom purification, plays certain supporting role, it is ensured that in paper base material in paper base material preparation process
With good water filtering performance；The beating degree of the second level is controlled to 30-55 ° of SR, and the paper pulp fiber of this grade of slurry has cut off, fine
Preferably, during paper base material is prepared, play a part of fibre compact interweaves combines the wire-dividing broom purification of dimension, this part paper pulp
The consumption proportion of fiber is maximum, controls more than 60%；The beating degree of the third level is controlled to 55-70 ° of SR, this grade of slurry
The cut-out of fiber itself is more, and wire-dividing broom purification degree is very high, and fiber attenuates short and small, and the hydroxyl and hydrogen bond for exposing is more, in system
During standby paper base material, the more hydrogen bonds of link intertexture and covalent bond are played, the effect in paper base material space is filled, so as to protect
The bulk strength of the paper base material for preparing is demonstrate,proved；And due to its soft and thin characteristic, it will not block network of fibers, thus
The density of paper can be lifted.And the slurry kind is particularly suitable for productive life paper, the tensile strength of paper for daily use is improved.Above-mentioned three
The division of individual beating gradient, the overall physical properties of its paper base material for preparing are more excellent, decrease or increase beating gradient, can all make
The physical property of the paper base material of preparation has declined.
And, beating degree can also play a part of to fill paper base material space for the slurry of 55-70 ° of SR, can replace
The addition of most of chemicals filler during the conventional paper system of copying, made by paper base material intensity it is high and degradable, it is to avoid
Because of the problem of the easy dry linting of paper, hair loss caused by the addition of filler, and reduce the addition of chemicals so that paper base material
Prepare more environmentally-friendly.
Additionally, the slurry of above-mentioned three kinds of beating degrees is mixed, the first paper pulp, second paper pulp and the third paper pulp
Mass ratio be (10-25)：(65-80):(5-10), when, the paper base material of preparation has higher tear index and resistance to broken finger
Number, goes for many special occasions and uses, the particularly preparation of paper for daily use sill, such as face-cloth, lens paper etc..
Due to paper substrate being prepared using the mixed slurry of three kinds of beating degrees, play cooperative compensating between the slurry of different beating degrees
Effect, requirement to beating degree reduces, conditions of beating control can be avoided bad, the problem of quantitative inequality easily occur.Due to
The tightness of paper substrate prepared by tradition has larger relation with the retention of beating, the addition of filler and filler, if will prepare
A kind of specific paper substrate, needs to get hold of each link.And the present invention be directed to specific raw material, by regulate and control beating gradient and its
Respective content can prepare preferable paper base material, simplify the preparation flow of paper base material.
Beneficial effects of the present invention are：
(1) method being beaten using gradient in the present invention, the paper pulp fiber of different beating degrees is mixed, it is ensured that paper substrate
Material has good water filtering performance in preparation process, and the paper base material that can make to prepare has higher intensity.
(2) replace the addition of most of chemicals in paper preparation process using the higher paper pulp fiber of beating degree, make paper
Preparing for sill is more environmentally-friendly, and the paper base material of preparation is more degradable.
(3) ratio of the present invention by the slurry of different beating degrees, the paper substrate for preparing are adapted to prepare polytype
Paper substrate, the particularly preparation of paper for daily use sill.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Analysis method employed in the embodiment of the present invention is as follows：
The measure of whiteness：Paper pulp is discongested after device discongests Jing fiber, is copied into the scraps of paper on a buchner funnel, after air-drying with YQ-
Z -48B Z -48B whiteness instrument is determined；
Folding number：Domestic MIT folding strength testers with are measured.
Burst index：The Burst Tester produced with swedish company L＆W is measured.
Fracture length：The anti-tensile tester produced with swedish company L＆W is measured.
Tear index：The tearability tester produced with u s company TMI is measured.
Remaining experimental technique not elaborated is the normal experiment method of this area.
A kind of biochemical process ECF bleaching sodium hydroxide anthraquinone slurries of 1 Fast growth poplar of embodiment prepare the side of paper base material
Method, the embodiment prepare paper for daily use sill.
Step is as follows：
(1) by a kind of 201310300135.5 " the sodium hydroxide anthraquinone slurry biochemical process ECF drifts of Fast growth poplar of patent ZL
The high-performance element-free chlorine Fast growth poplar bleach chemical pulp that white technique " technology is obtained, pulp brightness 86.3%ISO take three parts of paper pulp
Accurate defibrination is carried out using PFI mills so that the beating degree of paper pulp is 15 ° of SR, 35 ° of SR, 55 ° of SR respectively.
The concrete preparation method of the paper pulp of whiteness 86.3%ISO is：
1) steaming and decocting：The Fast growth poplar wood chip of 15~25mm of length, 10~20mm of width, 3~5mm of thickness is taken, after natural air drying,
Steaming and decocting is carried out, Fast growth poplar sodium hydroxide anthraquinone oleo stock is obtained, the condition of steaming and decocting is：Alkali charge 22%, to over dry raw material, NaOH
Meter；AQ consumptions 0.05%, liquor ratio 1:4,165 DEG C of steaming and decocting maximum temperature carries out deflation 10-15min, heating-up time at 105 DEG C
90min, temperature retention time 90min；Steaming and decocting disposed slurry is scrubbed, screening, obtains paper pulp.
2) xylanase pretr eatment：Adjustment pulp density is 10%, then uses xylanase X1、X2Or X3Processed,
In processing procedure, rub once at interval of 10~15min；Take out after process, be put into 10min in boiling water bath, lose xylanase
Terminating reaction living, cleans paper pulp with tap water.The xylanase X1、X2Or X3The concrete technology condition for being processed is as follows：It is poly-
Carbohydrase X1Process conditions be：Enzyme dosage 10IU/L, temperature 50 C, pH8-9, time 90-120min；Xylanase X2Technique
Condition is：Enzyme dosage 8IU/g, 55 DEG C of temperature, pH8-9, time 90-120min；Xylanase X3Process conditions be：Enzyme dosage
10IU/g, temperature 50 C, pH8-9, time 120min.
3) ECF bleachings：The above-mentioned paper pulp through ferment treatment is bleached, and bleaching process is ODQP, OPDQP or O1O2PDQP
Three kinds the step of floating one of sequences, bleaching process are：First, deoxidation lignin or reinforcing deoxidation wood are carried out to the paper pulp through ferment treatment
Element；After oxygen delignification terminates, paper pulp is washed, then carry out D section ClO 2 bleachings；D section ClO 2 bleachings terminate
Afterwards, paper pulp is washed, then carries out Q section chelation treatments；After Q section chelation treatments terminate, paper pulp is washed, Ran Houjin
Row P sections H2O2Bleaching, completes.
(2) the beating or defibrination standby paper pulp fiber raw material starched according to 15 ° of SR of beating degree, 35 ° of SR, 55 ° of SR paper pulp
Fibrous raw material mixed proportion 25:65:10 (mass ratio) Jing fibers are discongested device and are discongested and make its uniform mixing, then in sheet forming apparatus
Upper compressing 30g/m2Paper for daily use sill.
(3) at the same time, the 100% of 35 ° of SR of beating degree paper pulp fiber raw material, Jing fibers is selected to discongest device and discongest and make which
Uniformly mix, then the compressing 30g/m on sheet forming apparatus2Paper for daily use sill, does control sample use.
(4) by the 30g/m of both the above molding2Paper for daily use sill is put on electrothermal drying cylinder and is dried, Ran Houfang
The moisture of balanced life paper base material in exsiccator so as to which, 8%, the physics for then determining paper base material is strong for water tariff collection
Degree.
(5) the such as table 1 of the indices of paper for daily use sill obtained by, under identical paper pulp fiber raw material, beats according to gradient
Slurry prepare paper for daily use sill indices better than normal condition place an order a beating degree paper pulp fiber raw material prepare
Paper for daily use sill.
The biochemical process ECF bleaching sodium hydroxide anthraquinone slurries of 1 Fast growth poplar of table prepare the physical property of paper for daily use sill
Can Indexes Comparison
A kind of biochemical process ECF bleaching sodium hydroxide anthraquinone slurries of 2 Fast growth poplar of embodiment prepare the side of paper base material
Method, the embodiment prepare paper for daily use sill.
Step is as follows：
(1) whiteness prepared by embodiment 1 is adopted for the paper pulp of 86.3%ISO, taking three parts of paper pulp is carried out accurately using PFI mills
Defibrination so that the beating degree of paper pulp is 20 ° of SR, 40 ° of SR, 60 ° of SR respectively.
(2) the beating or defibrination standby paper pulp fiber raw material starched according to 20 ° of SR of beating degree, 40 ° of SR, 60 ° of SR paper pulp
Fibrous raw material mixed proportion 15:70:15 (mass ratio) Jing fibers are discongested device and are discongested and make its uniform mixing, then in sheet forming apparatus
Upper compressing 35g/m2Paper for daily use sill.
(3) at the same time, the 100% of 40 ° of SR of beating degree paper pulp fiber raw material, Jing fibers is selected to discongest device and discongest and make which
Uniformly mix, then the compressing 35g/m on sheet forming apparatus2Paper for daily use sill, does control sample use.
(4) by the 35g/m of both the above molding2Paper for daily use sill is put on electrothermal drying cylinder and is dried, Ran Houfang
The moisture of balanced life paper base material in exsiccator so as to which, 8%, the physics for then determining paper base material is strong for water tariff collection
Degree.
(5) the such as table 2 of the indices of paper for daily use sill obtained by, under identical paper pulp fiber raw material, beats according to gradient
Slurry prepare paper for daily use sill indices better than normal condition place an order a beating degree paper pulp fiber raw material prepare
Paper for daily use sill.
The biochemical process ECF bleaching sodium hydroxide anthraquinone slurries of 2 Fast growth poplar of table prepare the physical property of paper for daily use sill
Can Indexes Comparison
A kind of biochemical process ECF bleaching sodium hydroxide anthraquinone slurries of 3 Fast growth poplar of embodiment prepare the side of paper base material
Method, the embodiment prepare environmental protection package paper base material.
Step is as follows：
(1) whiteness prepared by embodiment 1 is adopted for the paper pulp of 86.3%ISO, taking three parts of paper pulp is carried out accurately using PFI mills
Defibrination so that the beating degree of paper pulp is 25 ° of SR, 45 ° of SR, 65 ° of SR respectively.
(2) the beating or defibrination standby paper pulp fiber starched according to 25 ° of SR of beating degree, 45 ° of SR, 65 ° of SR paper pulp fiber
Raw Material Blending Ratio 15:80:5 (mass ratio) Jing fibers are discongested device and are discongested and make its uniform mixing, then press on sheet forming apparatus
Make type 120g/m2Environmental protection package paper base material.
(3) at the same time, the 100% of 45 ° of SR of beating degree paper pulp fiber raw material, Jing fibers is selected to discongest device and discongest and make which
Uniformly mix, then the compressing 120g/m on sheet forming apparatus2Environmental protection package paper base material, does control sample use.
(4) by the 120g/m of both the above molding2Environmental protection package paper base material is put on electrothermal drying cylinder and is dried, then
It is put into the moisture of the environmentally friendly wrapping paper sill of balance in exsiccator so as to which then water tariff collection determines the thing of paper base material 8%
Reason intensity.
(5) the such as table 3 of the indices of environmental protection package paper base material obtained by, under identical paper pulp fiber raw material, according to gradient
The indices of environmental protection package paper base material prepared by beating place an order better than normal condition the paper pulp fiber raw material system of a beating degree
Standby environmental protection package paper base material.
The biochemical process ECF bleaching sodium hydroxide anthraquinone slurries of 3 Fast growth poplar of table prepare the physics of environmental protection package paper base material
Performance indications compare
A kind of biochemical process ECF bleaching sodium hydroxide anthraquinone slurries of 4 Fast growth poplar of embodiment prepare the side of paper base material
Method, the embodiment prepare environmental protection package paper base material.
Step is as follows：
(1) whiteness prepared by embodiment 1 is adopted for the paper pulp of 86.3%ISO, taking three parts of paper pulp is carried out accurately using PFI mills
Defibrination so that the beating degree of paper pulp is 20 ° of SR, 40 ° of SR, 60 ° of SR respectively.
(2) the beating or defibrination standby paper pulp fiber raw material starched according to 20 ° of SR of beating degree, 40 ° of SR, 60 ° of SR paper pulp
Fibrous raw material mixed proportion 20:70:10 (mass ratio) Jing fibers are discongested device and are discongested and make its uniform mixing, then in sheet forming apparatus
Upper compressing 130g/m2Environmental protection package paper base material.
(3) at the same time, the 100% of 40 ° of SR of beating degree paper pulp fiber raw material, Jing fibers is selected to discongest device and discongest and make which
Uniformly mix, then the compressing 130g/m on sheet forming apparatus2Environmental protection package paper base material, does control sample use.
(4) by the 130g/m of both the above molding2Environmental protection package paper base material is put on electrothermal drying cylinder and is dried, then
It is put into the moisture of the environmentally friendly wrapping paper sill of balance in exsiccator so as to which then water tariff collection determines the thing of paper base material 8%
Reason intensity.
(5) the such as table 4 of the indices of environmental protection package paper base material obtained by, under identical paper pulp fiber raw material, according to gradient
The indices of environmental protection package paper base material prepared by beating place an order better than normal condition the paper pulp fiber raw material system of a beating degree
Standby environmental protection package paper base material.
The biochemical process ECF bleaching sodium hydroxide anthraquinone slurries of 4 Fast growth poplar of table prepare the physics of environmental protection package paper base material
Performance indications compare
The method that a kind of biochemical process ECF bleaching sodium hydroxide anthraquinone slurries of 5 Fast growth poplar of embodiment prepare paper base material,
The embodiment prepares white card body paper paper base material.
Step is as follows：
(1) whiteness prepared by embodiment 1 is adopted for the paper pulp of 86.3%ISO, taking three parts of paper pulp is carried out accurately using PFI mills
Defibrination so that the beating degree of paper pulp is 20 ° of SR, 45 ° of SR, 60 ° of SR respectively.
(2) the beating or defibrination standby paper pulp fiber starched according to 20 ° of SR of beating degree, 45 ° of SR, 60 ° of SR paper pulp fiber
Raw Material Blending Ratio 10:80:10 (mass ratio) Jing fibers are discongested device and are discongested and make its uniform mixing, then press on sheet forming apparatus
Make type 120g/m2White card body paper paper base material.
(3) at the same time, the 100% of 45 ° of SR of beating degree paper pulp fiber raw material, Jing fibers is selected to discongest device and discongest and make which
Uniformly mix, then the compressing 120g/m on sheet forming apparatus2White card body paper paper base material, does control sample use.
(4) by the 120g/m of both the above molding2White card body paper paper base material is put on electrothermal drying cylinder is dried, then
The moisture of white card body paper paper base material is balanced in being put into exsiccator so as to which then water tariff collection determines the thing of paper base material 8%
Reason intensity.
(5) the indices such as table 5 of white card body paper paper base material obtained by, under identical paper pulp fiber raw material, according to gradient
The indices of white card body paper paper base material prepared by beating place an order better than normal condition the paper pulp fiber raw material system of a beating degree
Standby white card body paper paper base material.
The biochemical process ECF bleaching sodium hydroxide anthraquinone slurries of 5 Fast growth poplar of table prepare white card body paper paper base material physical property
Can Indexes Comparison
Embodiment 6：
To ensure the comparability of paper properties, the paper pulp prepared using in embodiment 1 is respectively adopted two methods as raw material
Tested, it is specific as follows：
Method one：Take three parts of paper pulp using PFI mill carry out accurate defibrination so that the beating degree of paper pulp be respectively 20 ° of SR,
44 ° of SR, 65 ° of SR, are 15 in mass ratio:75:10 are mixed, and mixed slurry is obtained, then copies and makes quantification of 60g/m2's
Paper.
Method two：Paper pulp is carried out into accurate defibrination using PFI mills so that the beating degree of paper pulp is 44 ° of SR, then copies and makes
Quantification of 60g/m2Paper.
The physical properties such as its folding strength, bursting strength, tear index, fracture length are detected, as a result such as table 6.
Table 6：Paper properties compare
Although the above-mentioned specific embodiment for combining the present invention is described, not the limit to invention protection domain
System, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art need not pay
The various modifications or deformation made by going out creative work are still within the scope of the present invention.
Claims (8)
1. a kind of methods of beating of paper pulp, it is characterised in that step is as follows：
(1) paper pulp is prepared using the bleaching process of the sodium hydroxide anthraquinone slurry biochemical process ECF of Fast growth poplar；
(2) paper pulp to preparing carries out gradient beating, obtains the paper pulp of three kinds of beating degrees, wherein：The beating degree of the first paper pulp
For 10-30 ° of SR, the beating degree of second paper pulp is 30-55 ° of SR, and the beating degree of the third paper pulp is 55-70 ° of SR.
2. beating according to claim 1, it is characterised in that in step (2), three kinds of beating degree point, the first paper pulp
Beating degree is 15-25 ° of SR, and the beating degree of second paper pulp is 35-50 ° of SR, and the beating degree of the third paper pulp is 65-70 ° of SR.
3. the method that a kind of biochemical process ECF bleaching sodium hydroxide anthraquinone slurries of Fast growth poplar prepare paper base material, its feature exist
In step is as follows：
(1) methods of beating as described in claim 1 or 2 is beaten, and the paper pulp of three kinds of beating degrees is obtained；
(2) by the first paper pulp, second paper pulp and the third paper pulp (5-30) in mass ratio：(60-85):(5-20) mix,
Obtain mixed slurry；
(3) mixed slurry is copied into the type of making or compressing, obtains paper base material.
4. method according to claim 3, it is characterised in that in step (2), by the first paper pulp, second paper pulp and
The third paper pulp (10-20) in mass ratio：(65-70):(15-20) mix.
5. the paper base material that the method described in claim 3 or 4 is prepared.
6. paper base material according to claim 5, it is characterised in that the paper base material is made a living and applies flexibly paper base material, environmental protection
Packaging paper base material and white card body paper paper base material.
7. paper base material according to claim 6, it is characterised in that the paper base material is made a living and applies flexibly paper base material.
8. paper base material according to claim 6, it is characterised in that the paper for daily use sill includes：Medicated napkin, health
Paper, tissue and lens paper.
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| CN110820428A (en) * | 2019-11-14 | 2020-02-21 | 广东华凯科技股份有限公司 | Preparation method of high-flexibility waterproof fiberboard and finished product thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103321079A (en) * | 2013-07-17 | 2013-09-25 | 齐鲁工业大学 | ECF bleaching technology of fast growing poplar by NaOH-AQ pulp biochemical method |
| CN103321081A (en) * | 2013-07-17 | 2013-09-25 | 齐鲁工业大学 | ECF bleaching technology of fast growing poplar by sodium hydroxide anthraquinone pulp bio-chemical method |
| CN103362009A (en) * | 2013-07-17 | 2013-10-23 | 齐鲁工业大学 | Rapid-growth poplar sodium hydroxide anthraquinone pulp biochemical method TCF bleaching process |
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| CN103321079A (en) * | 2013-07-17 | 2013-09-25 | 齐鲁工业大学 | ECF bleaching technology of fast growing poplar by NaOH-AQ pulp biochemical method |
| CN103321081A (en) * | 2013-07-17 | 2013-09-25 | 齐鲁工业大学 | ECF bleaching technology of fast growing poplar by sodium hydroxide anthraquinone pulp bio-chemical method |
| CN103362009A (en) * | 2013-07-17 | 2013-10-23 | 齐鲁工业大学 | Rapid-growth poplar sodium hydroxide anthraquinone pulp biochemical method TCF bleaching process |
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| CN110820428A (en) * | 2019-11-14 | 2020-02-21 | 广东华凯科技股份有限公司 | Preparation method of high-flexibility waterproof fiberboard and finished product thereof |
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