CN107059480B - One kind writing paper as made from non-timber class paper pulp and preparation method thereof - Google Patents
One kind writing paper as made from non-timber class paper pulp and preparation method thereof Download PDFInfo
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- CN107059480B CN107059480B CN201710184817.2A CN201710184817A CN107059480B CN 107059480 B CN107059480 B CN 107059480B CN 201710184817 A CN201710184817 A CN 201710184817A CN 107059480 B CN107059480 B CN 107059480B
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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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
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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
- D21F11/06—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type
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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
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
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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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
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Abstract
The invention discloses one kind writing papers as made from non-timber class paper pulp and preparation method thereof, one kind writing paper as made from non-timber class paper pulp of the invention, the slurry of the writing paper as made from non-timber class paper pulp is made by self-control straw pulp and self-control bamboo pulp, wherein the quantification of 30g/m of the writing paper as made from non-timber class paper pulp2‑60g/m2, the content for synthesizing paper making additive is the 0.5%-1.0% of the oven dry stock, and the content of the inorganic filler is the 15%-25% of the oven dry stock.The evenness of paper of the invention, smoothness, glossiness and oil suction ink are good, and COD content is few, and paper is not dazzling, can protect eyes, safety and environmental protection.
Description
Technical field
The present invention relates to paper manufacturing technology fields, and in particular to a kind of writing paper as made from non-timber class paper pulp and its
Preparation method.
Background technique
With the development of national economy, the demand of high-grade paper will be increased considerably, but China's timber resource shortage,
Paper making raw material is largely straw pulp, reed pulp and waste paper regenerated slurry.These raw materials are since fiber is short, and heteroproteose cell content is high, water retention value
The features such as high, seriously affect the quality of paper, it is low that defect is mainly manifested in paper dry and wet intensity, easily broken paper, printing adaptability
Difference etc..However the content of fiber pulp is improved, cost increase is more, declines enterprise profit, should not use；Improve mashing
Although technique is theoretically most intuitive method, extremely difficult in practical operation, it is too many to involve factor, it is not easy to reach
To optimised process effect；It is higher using natural reinforcing agent dosage as cationic starch, it needs to be gelatinized, it is troublesome in poeration, and
Its effect is easy to tend to be saturated.
The shortcomings that prior art:
Application number CN87101416.5 discloses a kind of high filler paper technology for making fibrous raw material with grass, wood pulp, work
Skill process is the gauzes → white water system → copy paper pressures such as mashing (grass, wood pulp mixing) → plus Witcodur 272, aluminium carbonate, talcum powder
Paper is processed into squeezing → drying → top sizing → is dried →.The paper produced with this technique, filler is containing allowance in 35% (weight after detection
Measure percentage) more than.This paper technology is suitable for the production of the cultural papers such as writing paper, coating body paper, writing paper, facing paper,
Its product has the advantages that ton paper pulp consumes that low, paper smoothness is high, glossiness is good, surface is fine and smooth, intensity is high, printability is good.
Application number CN200910001146.7 discloses a kind of writing paper and preparation method thereof, used in the writing paper
Slurry includes that 20-100% does not float straw pulp and the wood pulp of 0-80%.The whiteness of the writing paper is 35-75%ISO, opaque
Degree >=75%, quantification of 45.0-80.0g/m2.The production process of the writing paper is not only energy saving, save the cost but also energy
The discharge of pollutant is enough greatly lowered.
Application number CN201010533916.5 disclose protection eyesight writing paper, it be by following raw materials in parts by weight
Than being formulated: paper pulp: weld: green dye=60~90:5~30:5~20.The present invention is due to using thin Huang
Green background color is as the basic colors for writing paper, therefore people do not have to concern reflected light to the thorn of eyes when in use
Swash, eye eyesight can be effectively protected.
In conclusion more using the higher wood pulp of content about the preparation of writing paper in the prior art, straw pulp is not floated only
It only as a part of paper pulp raw material, is used in combination with paper pulp such as wood pulps, but wood pulp can not effectively improve each of paper
Item performance indicator.In addition, consumer is in the psychologically demand to the needs of brightness and to some physical indexs, generally use
Pulp manufacture based on bleached wood pulp.However, intensity substantially reduces after bleaching, water filtering performance is poor, and it is high to be not suitable for production
Shelves paper product；Dyestuff or pigment is added in bleached pulp before manufacturing paper with pulp, not only increases the direct production cost of papermaking, and due to dye
The addition of material or pigment, increases cost of sewage disposal and processing difficulty.Production technology how is improved, energy consumption and pollution are reduced,
With the non-timber plasmoid of high quality for main slurry, the eyesight but also the significantly top grade of save the cost of people can be protected by manufacturing paper with pulp out
Writing paper, the prior art does not provide better method, in view of this, the present invention is specifically proposed.
In long-term working practice, the inventors discovered that, without the bamboo pulp fiber of mashing be added to wheat straw fiber it
Afterwards, under identical defibrination revolving speed, beating degree is low, but weight in wet base and water retention value are higher than straw pulp；It is beaten early period, is referred at the anti-tensile of paper
Number, tear index, burst index and folding strength are beaten the later period compared with straw pulp height, lower than straw pulp.And apply synthesis paper making additive and nothing
Machine filler, with dosage, low, easy to operate, effect clear advantage, can not only improve paper strength, and in addition there are also well
Retention and drainage effect can reduce a ton pulp material consumption, reduce cost.Present inventors have further discovered that not bleached with non-timber class
Paper pulp not only has the stronger suction-operated to light wave as the writing paper prepared as main slurry, but also can have
Effect ground protection eyesight.
Currently, lacking good writing paper as made from non-timber class paper pulp of a kind of glossiness and preparation method thereof.
Summary of the invention
The purpose of the present invention is to provide a kind of good writing paper and its preparations as made from non-timber class paper pulp of glossiness
Method.
In order to achieve the above objectives, present invention employs following technical proposals: one kind of the invention is by non-timber class paper pulp system
The slurry of the writing paper obtained, the writing paper as made from non-timber class paper pulp is made by self-control straw pulp and self-control bamboo pulp,
In the writing paper as made from non-timber class paper pulp quantification of 30g/m2-60g/m2, the content for synthesizing paper making additive is the over dry
The 0.5%-1.0% of slurry, the content of the inorganic filler are the 15%-25% of the oven dry stock.
Further, the synthesis paper making additive chitin is chitin derivativ chitosan class paper making additive, the first
The content of shell element derivative chitosan class paper making additive is the 0.5%-1.0% of the oven dry stock；The concentration of the slurry is
0.3%-0.5%,
The opacity of the writing paper as made from non-timber class paper pulp is 80%-96%, tensile index 32-37N
M/g, tear index 150-200mNm2/ g, burst index 4-10kPam2/ g, folding strength 20-40 times；
The slurry is grouped as by following group of weight percent:
Make straw pulp 20%-80% by oneself,
Make bamboo pulp 20%-80% by oneself.
Further, the self-control straw pulp is that straw pulp is not floated in self-control, and the self-control bamboo pulp is that bamboo pulp is not floated in self-control, it is described certainly
The K value of brown stock processed is 5.5 hereinafter, beating degree is 20-30 ° of SR, and weight in wet base 2-3.5g, whiteness is 44.5%ISO hereinafter, pH value
For 7-9, the content of cellulose based on solid content total weight is 90-97%；
The chitin derivativ chitosan class paper making additive include chitin derivativ chitosan class paper making additive sun from
Subgroup is divided and chitin derivativ chitosan class paper making additive the anionic component, the content of the chitosan in the cationic components
For 1%-10%, the content of the chitosan in the anionic component is 1-10%, the anionic component and cationic components
Mass ratio be 0.16:0.5-0.8.
The preparation method of the writing paper of the present invention as made from non-timber class paper pulp, includes the following steps:
(1) self-control straw pulp and self-control bamboo pulp are mixed in stock tank, keeps slurry uniform；
(2) slurry after mixing is passed sequentially through after stock tank, low dense fiberizer and straw pulp after decker, concentration are kowtowed and is starched
Tower, the slurry after being beaten；
(3) after with inorganic filler is added in stock tank, the anionic component is first added, in the stirring speed of 700-2000r/min
Enter paper machine stock tank after reacting 20-60s under rate；
(4) cationic components then are added into the slurry of step (3) paper machine stock tank, in the stirring of 400-1400r/min
Enter header box after reacting 30-90s under rate；
(5) by slurry obtained by step (4) on paper machine successively through fan pump, wet end, blanket portion press section and the first drying section,
Molding paper is obtained, the moisture content of the molding paper is lower than 8.1wt%；
(6) molding paper obtained by step (5) is sequentially sent to calender, the second drying section, reel machine and high-speed cutter
The writing paper as made from non-timber class paper pulp is made in post-processing.
Further, in step (2), mashing is beaten in low dense fiberizer, and defibrination revolving speed is 10000-
20000r/min, beating consistency are 10% or less；After mashing, the beating degree of gained slurry is 20-40 ° of SR, weight in wet base 7-
10g, water retention value 110-150%；
In step (3), the anionic component is prepared:
The sodium hydroxide solution that chitin after will be clean is 30%-60% with concentration is in 120-140 DEG C of processing 2-3h, water
It is dissolved in the acetic acid solution that concentration is 1-10% after being washed till neutrality, adjusts pH value to 9-10, every liter of liquid adds 1-100g's
K2S2O8And reducing agent, stirring are warming up to 40-50 DEG C, and acrylamide is added, anionic monomer is graft-polymerized, the reaction time
For 2-3h, being adjusted to pH value is 6-10, obtains the anionic component；
In step (4), cationic components are prepared:
The sodium hydroxide solution that chitin after will be clean is 30%-60% with concentration is in 120-140 DEG C of processing 2-3h, water
It is dissolved in the acetic acid solution that concentration is 1-10% after being washed till neutrality, adjusts pH value to 9-10, every liter of liquid adds 1-100g's
K2S2O8And reducing agent, stirring are warming up to 40-50 DEG C, and acrylamide is added, cationic monomer is graft-polymerized, the reaction time
For 2-3h, it is adjusted to required pH value, obtains cationic components.
Further, in step (3), the anionic monomer is the olefines for inhaling electric base by force containing itrile group, carbonyl
Close object；The inorganic filler be talcum powder, calcium carbonate, wollastonite, mica powder, kaolin, barium sulfate or aluminum silicon powder in extremely
Few one kind；
In step (4), the cationic monomer is the alkenes compounds for containing 1,1- dialkyl group, alkoxy；In step
Suddenly in (3) and step (4), the reducing agent is Na2SO3、FeSO4、H2O2Or any one in HCl；
In step (5), the speed of the paper machine is 200-400m/min；When the slurry flows into wet end from header box
Online concentration is 0.1%-1.0%, and wet end is 50-200 mesh.
Further, in step (3), the anionic monomer be acrylonitrile, anionic polyacrylamide or yin from
Any one in sub- starch, the inorganic filler are talcum powder；Preferably talc powder is considered from performance, environmental protection, cost angle；
In step (4), cationic monomer is isobutene, cationic polyacrylamide, any one in cationic starch；In step
(5) in, the speed of the paper machine is 250-350m/min；The wet end when slurry flows into wet end from header box is 50-150
Mesh.
Further, in step (5), the wet end when slurry flows into wet end from header box is 50-200 mesh.
Chitin derivativ chitosan class paper making additive of the present invention, includes the following steps:
(1) it prepares the anionic component: the chitin after cleaning is existed with the sodium hydroxide solution that concentration is 30%-60%
120-140 DEG C of processing 2-3h is dissolved in the acetic acid solution that concentration is 1-10%, adjusting pH value to 9-10 after being washed to neutrality,
Every liter of liquid adds the K of 1-100g2S2O8And reducing agent, stirring are warming up to 40-50 DEG C, and acrylamide is added, anionic monomer carries out
It is graft-polymerized, reaction time 2-3h, being adjusted to pH value is 6-10, obtains the anionic component；
(2) cationic components are prepared: the chitin after cleaning is existed with the sodium hydroxide solution that concentration is 30%-60%
120-140 DEG C of processing 2-3h is dissolved in the acetic acid solution that concentration is 1-10%, adjusting pH value to 9-10 after being washed to neutrality,
Every liter of liquid adds the K of 1-100g2S2O8And reducing agent, stirring are warming up to 40-50 DEG C, and acrylamide is added, cationic monomer carries out
It is graft-polymerized, reaction time 2-3h, being adjusted to pH value is 3-8, obtains cationic components；
(3) by above-mentioned steps (2) and step (3), chitin derivativ chitosan class paper making additive is made.
Further, in step (1), the content of the chitosan in the anionic component is 1-10%, the shell
Glycan is the derivative of chitin deacetylation；In step (2), the content of the chitosan in the cationic components is 1%-
10%, the molecular weight of the chitosan is 1 to 10 ten thousand；In step (3), the quality of the anionic component and cationic components
Than for 0.16:0.5-0.8.
The utility model has the advantages that the evenness of paper of the invention, smoothness, glossiness and oil suction ink are good, paper is not dazzling, can protect
Eyeshield eyeball, safety and environmental protection.In production method, cost of sewage disposal and processing difficulty are small, the COD in the sewage of generation
Content is few, reduces energy consumption and environmental pollution.
Compared with prior art, the present invention has the advantage that
(1) average length of wheat straw fiber (straw pulp) is shorter, very low at the tear index and folding strength of paper；Bamboo pulp fiber
The average length of (bamboo pulp) is longer, higher at the tear index and folding strength of paper.Straw pulp will not be floated and not float bamboo pulp by certain
Ratio is beaten after mixing, so that bamboo pulp fiber is isolated fine in the wire-dividing broom purification after mashing more evenly
Fiber, then synthesis paper making additive is added, the slurry drainage capacity finally obtained greatly increases, the beating degree drop of slurry
It is low, when beating degree is lower, at paper every physical index compared with bamboo pulp height.Due to the non-bleaching of used slurry,
The natural colour (Huang) that raw material itself has is maintained, therefore people do not have to concern reflected light to the thorn of eyes when in use
Swash, eye eyesight can be effectively protected.
(2) synthesis paper making additive specifically includes that condensation, flocculation and attached to the mechanism of keeping of slurry fiber fines and filler
It is poly-.Due to more easily forming netted floccule body with pulp fiber using first plus after such anionic components plus by the way of cationic components
Structure makes it have better retention effect.Organic polymer retention agent is added in slurry, can undergo one on pulp components surface
Serial dynamic changing process: absorption, reconstruct, diffusion and transfer, molecular chain rupture etc..It reduces cost of sewage disposal and processing is difficult
Degree, and reduce energy consumption and environmental pollution.
(3) in the use process of auxiliary agent, the first-past retention and drainability of slurry can not only be improved, and can also be certain
The strength character of paper is improved in degree, while can also reduce the concentration and COD content of filtrate, to reduce useless
The processing cost of water.However inorganic filler (talcum powder) loss is less, improves evenness, smoothness, glossiness and the suction of page
Ink improves the printing of page and the property write.
Specific embodiment
By following embodiment, present invention be described in more detail, but should be noted that the scope of the present invention is not implemented by these
Any restrictions of example.
Embodiment 1
A kind of writing paper as made from non-timber class paper pulp of the invention, it is described to be write as made from non-timber class paper pulp
The slurry of paper is made by self-control straw pulp and self-control bamboo pulp, wherein the quantification of 30g/ of the writing paper as made from non-timber class paper pulp
m2, the content for synthesizing paper making additive is the 0.5% of the oven dry stock, and the content of the inorganic filler is the oven dry stock
25%.
The synthesis paper making additive chitin is chitin derivativ chitosan class paper making additive, the chitin derivativ
The content of chitosan class paper making additive is the 0.5% of the oven dry stock；The concentration of the slurry is 0.3%,
The opacity of the writing paper as made from non-timber class paper pulp is 96%, tensile index 37Nm/g, tearing
Index 200mNm2/ g, burst index 4kPam2/ g, folding strength 20 times；
The slurry is grouped as by following group of weight percent:
Make straw pulp 20% by oneself,
Make bamboo pulp 80% by oneself.
The self-control straw pulp is that straw pulp is not floated in self-control, and the self-control bamboo pulp is that bamboo pulp, the self-control brown stock are not floated in self-control
K value be 5.5 hereinafter, beating degree is 30 ° of SR, weight in wet base 2g, whiteness is 44.5%ISO hereinafter, pH value is 7, is based on solid content
The content of cellulose of total weight is 90%；
The chitin derivativ chitosan class paper making additive include chitin derivativ chitosan class paper making additive sun from
Subgroup is divided and chitin derivativ chitosan class paper making additive the anionic component, the content of the chitosan in the cationic components
It is 1%, the content of the chitosan in the anionic component is 8%, the mass ratio of the anionic component and cationic components
For 0.16:0.5.The molecular weight of the chitosan is 100,000；
The preparation method of the writing paper of the present invention as made from non-timber class paper pulp, includes the following steps:
(1) by weight percent be 20% self-control straw pulp and weight percent be 80% self-control bamboo pulp stock tank carry out
Mixing, keeps slurry uniform；
(2) slurry after mixing is passed sequentially through after stock tank, low dense fiberizer and straw pulp after decker, concentration are kowtowed and is starched
Tower, the slurry after being beaten；Mashing, is beaten in low dense fiberizer, and defibrination revolving speed is 10000r/min, beating consistency
It is 10% or less；After mashing, the beating degree of gained slurry is 20 ° of SR, weight in wet base 10g, water retention value 110%；
(3) after with inorganic filler is added in stock tank, the anionic component is first added, it is anti-under the stirring rate of 700r/min
Enter paper machine stock tank after answering 60s；
Prepare the anionic component:
The sodium hydroxide solution that chitin concentration after will be clean is 50% is in 120 DEG C of processing 2h, after being washed to neutrality
It is dissolved in the acetic acid solution that concentration is 1%, adjusts pH value to 9, every liter of liquid adds the K of 100g2S2O8And reducing agent, stirring rise
Temperature is to 40 DEG C, and addition acrylamide, anionic monomer are graft-polymerized, reaction time 3h, and being adjusted to pH value is 8, obtains yin
Ion component；
The inorganic filler is talcum powder；The reducing agent is Na2SO3；The anionic monomer is acrylonitrile, described
Inorganic filler be wollastonite；
(4) cationic components then are added into the slurry of step (3) paper machine stock tank, in the stirring rate of 1000r/min
Enter header box after lower reaction 70s；
Prepare cationic components:
The sodium hydroxide solution that chitin concentration after will be clean is 50% is in 120 DEG C of processing 2h, after being washed to neutrality
It is dissolved in the acetic acid solution that concentration is 10%, adjusts pH value to 10, every liter of liquid adds the K of 1g2S2O8And reducing agent, stirring rise
Temperature is to 50 DEG C, and addition acrylamide, cationic monomer are graft-polymerized, reaction time 3h, and being adjusted to pH value is 5, obtains sun
Ion component；The cationic monomer is the alkenes compounds containing 1,1- dialkyl group；The reducing agent is Na2SO3；
(5) by slurry obtained by step (4) on paper machine successively through fan pump, wet end, blanket portion press section and the first drying section,
Molding paper is obtained, the moisture content of the molding paper is lower than 8.1wt%；The speed of the paper machine is 200m/min；It is described
Online concentration when slurry flows into wet end from header box is 1.0%, and wet end is 150 mesh.
(6) molding paper obtained by step (5) is sequentially sent to calender, the second drying section, reel machine and high-speed cutter
The writing paper as made from non-timber class paper pulp is made in post-processing.
Chitin derivativ chitosan class paper making additive of the present invention, includes the following steps:
(1) prepare the anionic component: the sodium hydroxide solution that the chitin concentration after will be clean is 50% is at 120 DEG C
2h is managed, is dissolved in the acetic acid solution that concentration is 8% after being washed to neutrality, adjusts pH value to 9, every liter of liquid adds 100g's
K2S2O8And reducing agent, stirring are warming up to 40 DEG C, and acrylamide is added, anionic monomer is graft-polymerized, the reaction time is
3h is adjusted to required pH value, obtains the anionic component；The content of chitosan in the anionic component is 10%, described
Chitosan is the derivative of chitin deacetylation；
(2) prepare cationic components: the sodium hydroxide solution that the chitin concentration after will be clean is 50% is at 140 DEG C
3h is managed, is dissolved in the acetic acid solution that concentration is 6% after being washed to neutrality, adjusts pH value to 9, every liter of liquid adds 100g's
K2S2O8And reducing agent, stirring are warming up to 40 DEG C, and acrylamide is added, cationic monomer is graft-polymerized, the reaction time is
3h is adjusted to required pH value, obtains cationic components；The content of chitosan in the cationic components is 1%, and the shell is poly-
The molecular weight of sugar is 1 to 10 ten thousand；
(3) by above-mentioned steps (2) and step (3), chitin derivativ chitosan class paper making additive is made.The anion
The mass ratio of component and cationic components is 0.16:0.5.
Acrylamide of the present invention, chitin, sodium hydroxide, acetic acid, potassium peroxydisulfate, reducing agent, inorganic filler are (sliding
Mountain flour) it is commercially available industrial goods.
Straw pulp of the present invention and bamboo pulp be applicant submitted on March 25th, 2016 application No. is
CN201610179306.7, entitled " non-timber class paper pulp " Chinese patent application disclosed in paper pulp.
Pulping process of the present invention be applicant submitted on March 25th, 2016 application No. is
CN201610176481.0, entitled " pulping process " Chinese patent application disclosed in method, it is characterized in that utilize three element
The cellulose products that (hemicellulose, cellulose, lignin) isolation technics obtains carry out slurrying.
Embodiment 2
Embodiment 2 the difference from embodiment 1 is that:
A kind of writing paper as made from non-timber class paper pulp of the invention, it is described to be write as made from non-timber class paper pulp
The slurry of paper is made by self-control straw pulp and self-control bamboo pulp, wherein the quantification of 60g/ of the writing paper as made from non-timber class paper pulp
m2, the content for synthesizing paper making additive is the 0.8% of the oven dry stock, and the content of the inorganic filler is the oven dry stock
20%.
The synthesis paper making additive chitin is chitin derivativ chitosan class paper making additive, and the concentration of the slurry is
0.5%, the molecular weight of the chitosan is 80,000；
The opacity of the writing paper as made from non-timber class paper pulp is 86%, tensile index 35Nm/g, tearing
Index 180mNm2/ g, burst index 8kPam2/ g, folding strength 40 times；
The slurry is grouped as by following group of weight percent:
Make straw pulp 50% by oneself,
Make bamboo pulp 50% by oneself.
The self-control straw pulp is that straw pulp is not floated in self-control, and the self-control bamboo pulp is that bamboo pulp, the self-control brown stock are not floated in self-control
K value be 5.5 hereinafter, beating degree is 20 ° of SR, weight in wet base 3.1g, whiteness is 44.5%ISO hereinafter, pH value is 8, is based on solid
The content of cellulose of object total weight is 95%；
The chitin derivativ chitosan class paper making additive include chitin derivativ chitosan class paper making additive sun from
Subgroup is divided and chitin derivativ chitosan class paper making additive the anionic component, the content of the chitosan in the cationic components
It is 10%, the content of the chitosan in the anionic component is 10%.
The preparation method of the writing paper of the present invention as made from non-timber class paper pulp, includes the following steps:
In step (1), by weight percent be 50% self-control straw pulp and weight percent be 50% self-control bamboo pulp
It is mixed in stock tank, keeps slurry uniform；
In step (2), the slurry after mixing passes sequentially through stock tank, low dense fiberizer and grass after decker, concentration
Slurry starches tower after kowtowing, the slurry after being beaten；Mashing, is beaten in low dense fiberizer, and defibrination revolving speed is 20000r/min,
Beating consistency is 10% or less；After mashing, the beating degree of gained slurry is 40 ° of SR, weight in wet base 7g, water retention value 150%；
In step (3), after with inorganic filler is added in stock tank, the anionic component is first added, in stirring for 2000r/min
It mixes and enters paper machine stock tank after reacting 20s under rate；
Prepare the anionic component:
The sodium hydroxide solution that chitin concentration after will be clean is 30% is in 140 DEG C of processing 3h, after being washed to neutrality
It is dissolved in the acetic acid solution that concentration is 10%, adjusts pH value to 10, every liter of liquid adds the K of 1g2S2O8And reducing agent, stirring rise
Temperature is to 50 DEG C, and addition acrylamide, anionic monomer are graft-polymerized, reaction time 2h, and being adjusted to pH value is 10, obtains yin
Ion component；
The inorganic filler is calcium carbonate；The reducing agent is FeSO4；The anionic monomer is anion pp
Amide, the inorganic filler are talcum powder；Preferably talc powder is considered from performance, environmental protection, cost angle；The anionic component
Mass ratio with cationic components is 0.16:0.8.
In step (4), cationic components then are added into the slurry of step (3) paper machine stock tank, 400r/min's
Enter header box after reacting 30s under stirring rate；Prepare cationic components:
The sodium hydroxide solution that chitin concentration after will be clean is 30% is washed to neutrality in 140 DEG C of processing 2.5h
It is dissolved in the acetic acid solution that concentration is 1% afterwards, adjusts pH value to 9, every liter of liquid adds the K of 100g2S2O8And reducing agent, stirring
40 DEG C are warming up to, addition acrylamide, cationic monomer are graft-polymerized, reaction time 2h, and being adjusted to pH value is 3, obtain
Cationic components；Obtain cationic components.The cationic monomer is the alkenes compounds containing alkoxy；The reducing agent
For FeSO4；
In step (5), by slurry obtained by step (4) successively through fan pump, wet end, blanket portion press section and the on paper machine
One drying section, obtains molding paper, and the moisture content of the molding paper is lower than 8.1wt%；The speed of the paper machine is 400m/
min；Online concentration when the slurry flows into wet end from header box is 0.8%, and wet end is 50 mesh.
Chitin derivativ chitosan class paper making additive of the present invention, includes the following steps:
In step (3), the mass ratio of the anionic component and cationic components is 0.16:0.8.
Embodiment 3
Embodiment 3 the difference from embodiment 1 is that:
A kind of writing paper as made from non-timber class paper pulp of the invention, it is described to be write as made from non-timber class paper pulp
The slurry of paper is made by self-control straw pulp and self-control bamboo pulp, wherein the quantification of 50g/ of the writing paper as made from non-timber class paper pulp
m2, the content for synthesizing paper making additive is the 1.0% of the oven dry stock, and the content of the inorganic filler is the oven dry stock
15%.
The synthesis paper making additive chitin is chitin derivativ chitosan class paper making additive, and the concentration of the slurry is
0.4%, the molecular weight of the chitosan is 10,000；
The opacity of the writing paper as made from non-timber class paper pulp is 80%, tensile index 32Nm/g, tearing
Index 150mNm2/ g, burst index 10kPam2/ g, folding strength 30 times；
The slurry is grouped as by following group of weight percent:
Make straw pulp 80% by oneself,
Make bamboo pulp 20% by oneself.
The self-control straw pulp is that straw pulp is not floated in self-control, and the self-control bamboo pulp is that bamboo pulp, the self-control brown stock are not floated in self-control
K value be 5.5 hereinafter, beating degree is 25 ° of SR, weight in wet base 3.5g, whiteness is 44.5%ISO hereinafter, pH value is 9, is based on solid
The content of cellulose of object total weight is 97%；
The chitin derivativ chitosan class paper making additive include chitin derivativ chitosan class paper making additive sun from
Subgroup is divided and chitin derivativ chitosan class paper making additive the anionic component, the content of the chitosan in the cationic components
It is 8%, the content of the chitosan in the anionic component is 1%.
The preparation method of the writing paper of the present invention as made from non-timber class paper pulp, includes the following steps:
In step (1), by weight percent be 80% self-control straw pulp and weight percent be 20% self-control bamboo pulp
It is mixed in stock tank, keeps slurry uniform；
In step (2), the slurry after mixing passes sequentially through stock tank, low dense fiberizer and grass after decker, concentration
Slurry starches tower after kowtowing, the slurry after being beaten；Mashing, is beaten in low dense fiberizer, and defibrination revolving speed is 17000r/min,
Beating consistency is 10% or less；After mashing, the beating degree of gained slurry is 30 ° of SR, weight in wet base 8g, water retention value 130%；
In step (3), after with inorganic filler is added in stock tank, the anionic component is first added, in stirring for 1500r/min
It mixes and enters paper machine stock tank after reacting 40s under rate；
Prepare the anionic component:
The sodium hydroxide solution that chitin concentration after will be clean is 60% is washed to neutrality in 135 DEG C of processing 2.7h
It is dissolved in the acetic acid solution that concentration is 8% afterwards, adjusts pH value to 9.4, every liter of liquid adds the K of 80g2S2O8And reducing agent, stirring
48 DEG C are warming up to, addition acrylamide, anionic monomer are graft-polymerized, reaction time 2.6h, and being adjusted to pH value is 6, obtain
To the anionic component；
The inorganic filler is mica powder；The reducing agent is HCl；The anionic monomer is anionic starch, institute
The inorganic filler stated is mica powder；The mass ratio of the anionic component and cationic components is 0.16:0.6.
In step (4), cationic components then are added into the slurry of step (3) paper machine stock tank, 1400r/min's
Enter header box after reacting 90s under stirring rate；Prepare cationic components:
Prepare cationic components:
The sodium hydroxide solution that chitin concentration after will be clean is 60% is in 130 DEG C of processing 3h, after being washed to neutrality
It is dissolved in the acetic acid solution that concentration is 6%, adjusts pH value to 9.5, every liter of liquid adds the K of 80g2S2O8And reducing agent, stirring rise
Temperature is to 45 DEG C, and addition acrylamide, cationic monomer are graft-polymerized, reaction time 2.5h, and being adjusted to pH value is 8, obtains
Cationic components；The reducing agent is H2O2；The cationic monomer is isobutene；
In step (5), by slurry obtained by step (4) successively through fan pump, wet end, blanket portion press section and the on paper machine
One drying section, obtains molding paper, and the moisture content of the molding paper is lower than 8.1wt%；The speed of the paper machine is 300m/
min；Online concentration when the slurry flows into wet end from header box is 0.1%, and wet end is 200 mesh.
Chitin derivativ chitosan class paper making additive of the present invention, includes the following steps:
In step (3), the mass ratio of the anionic component and cationic components is 0.16:0.6.
Embodiment 4
Embodiment 4 the difference from embodiment 1 is that:
The preparation method of the writing paper of the present invention as made from non-timber class paper pulp, includes the following steps:
In step (3), after with inorganic filler is added in stock tank, the anionic component is first added, prepares the anionic component:
The anionic monomer is the alkenes compounds containing itrile group；The inorganic filler is calcium carbonate；The inorganic filler
For barium sulfate；
In step (4), cationic components are then added into the slurry of step (3) paper machine stock tank, prepare cationic group
Point: the reducing agent is HCl；Cationic monomer is cationic polyacrylamide.
Embodiment 5
Embodiment 5 the difference from embodiment 1 is that:
The preparation method of the writing paper of the present invention as made from non-timber class paper pulp, includes the following steps:
In step (3), after with inorganic filler is added in stock tank, the anionic component is first added, prepares the anionic component:
The anionic monomer is the alkenes compounds for inhaling electric base by force containing itrile group, carbonyl；The inorganic filler is kaolin；
In step (4), cationic components are then added into the slurry of step (3) paper machine stock tank, prepare cationic group
Point: cationic monomer is cationic polyacrylamide.
Embodiment 6
Embodiment 6 the difference from embodiment 1 is that:
The preparation method of the writing paper of the present invention as made from non-timber class paper pulp, includes the following steps:
In step (3), after with inorganic filler is added in stock tank, the anionic component is first added, prepares the anionic component:
The anionic monomer is the alkenes compounds for inhaling electric base by force containing itrile group, carbonyl；The inorganic filler is aluminum silicon powder；
In step (4), cationic components are then added into the slurry of step (3) paper machine stock tank, prepare cationic group
Point: cationic monomer is cationic starch.
Test 1
Writing paper process flow made from non-timber class paper pulp of the present invention is simple, formation of sheet, smoothness, glossiness and suction
Ink is good.By carrying out the test of the key technical indexes, testing agency Qingdao to the writing paper of above-described embodiment production preparation
Dong Biao detection service Co., Ltd, according to standard GB/T/T12654-2008 testing result, as shown in table 1:
Table 1
As shown in Table 1, the evenness of the writing paper of the invention as made from non-timber class paper pulp paper of the invention, smooth
Degree, glossiness are good.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, the present invention
Claimed range is delineated by the appended claims, the specification and equivalents thereof from the appended claims.
Claims (8)
1. a kind of writing paper as made from non-timber class paper pulp, it is characterised in that: the book as made from non-timber class paper pulp
The slurry for writing paper is made by self-control straw pulp and self-control bamboo pulp, wherein the quantification of 30g/ of the writing paper as made from non-timber class paper pulp
m2-60g/m2, the content for synthesizing paper making additive is the 0.5%-1.0% of oven dry stock, and the content of inorganic filler is the oven dry stock
15%-25%；
The synthesis paper making additive chitin is chitin derivativ chitosan class paper making additive, and the chitin derivativ shell is poly-
The content of carbohydrate paper making additive is the 0.5%-1.0% of the oven dry stock；The concentration of the slurry is 0.3%-0.5%,
The opacity of the writing paper as made from non-timber class paper pulp be 80%-96%, tensile index 32-37Nm/g,
Tear index 150-200mNm2/ g, burst index 4-10kPam2/ g, folding strength 20-40 times；
The slurry is grouped as by following group of weight percent:
Make straw pulp 20%-80% by oneself,
Make bamboo pulp 20%-80% by oneself；
Wherein the writing paper as made from non-timber class paper pulp is prepared by the method included the following steps:
(1) self-control straw pulp and self-control bamboo pulp are mixed in stock tank, keeps slurry uniform；
(2) slurry after mixing passes sequentially through after stock tank, low dense fiberizer and straw pulp after decker, concentration are kowtowed and starches tower, obtains
Slurry after to mashing；Mashing, is beaten in low dense fiberizer, and defibrination revolving speed is 10000-20000r/min, is beaten dense
For degree for 10% hereinafter, after mashing, the beating degree of gained slurry is 20-40 ° of SR, weight in wet base 7-10g, water retention value 110-
150%；
(3) after with inorganic filler is added in stock tank, the anionic component is first added, under the stirring rate of 700-2000r/min
Enter paper machine stock tank after reacting 20-60s；Prepare the anionic component: the hydrogen for being 30%-60% with concentration by the chitin after cleaning
Sodium hydroxide solution is dissolved in the acetic acid solution that concentration is 1-10% after being washed to neutrality, adjusts in 120-140 DEG C of processing 2-3h
PH value to 9-10, every liter of liquid adds the K of 1-100g2S2O8And reducing agent, stirring are warming up to 40-50 DEG C, and acrylamide, yin is added
Ion monomer is graft-polymerized, reaction time 2-3h, and being adjusted to pH value is 6-10, obtains the anionic component；
(4) cationic components then are added into the slurry of step (3) paper machine stock tank, in the stirring rate of 400-1400r/min
Enter header box after lower reaction 30-90s；Prepare cationic components: the hydrogen for being 30%-60% with concentration by the chitin after cleaning
Sodium hydroxide solution is dissolved in the acetic acid solution that concentration is 1-10% after being washed to neutrality, adjusts in 120-140 DEG C of processing 2-3h
PH value to 9-10, every liter of liquid adds the K of 1-100g2S2O8And reducing agent, stirring are warming up to 40-50 DEG C, and acrylamide, sun is added
Ion monomer is graft-polymerized, and reaction time 2-3h is adjusted to required pH value, obtains cationic components；
(5) by slurry obtained by step (4) on paper machine successively through fan pump, wet end, blanket portion press section and the first drying section, obtain
Paper is formed, the moisture content of the molding paper is lower than 8.1wt%；
(6) add after molding paper obtained by step (5) being sequentially sent to calender, the second drying section, reel machine and high-speed cutter
The writing paper as made from non-timber class paper pulp is made in work.
2. the writing paper according to claim 1 as made from non-timber class paper pulp, it is characterised in that: the self-control straw pulp is
Straw pulp is not floated in self-control, and the self-control bamboo pulp is that bamboo pulp is not floated in self-control, and the K value of the self-control brown stock is 5.5 hereinafter, beating degree is
20-30 ° of SR, weight in wet base 2-3.5g, whiteness is 44.5%ISO hereinafter, pH value is 7-9, the cellulose based on solid content total weight
Content is 90-97%；
The chitin derivativ chitosan class paper making additive includes chitin derivativ chitosan class paper making additive cation group
Point and chitin derivativ chitosan class paper making additive the anionic component, the content of the chitosan in the cationic components be
1%-10%, the content of the chitosan in the anionic component are 1-10%, the anionic component and cationic components
Mass ratio is 0.16:0.5-0.8.
3. the preparation method of the described in any item writing papers as made from non-timber class paper pulp of claim 1 to 2, it is characterised in that
Include the following steps:
(1) self-control straw pulp and self-control bamboo pulp are mixed in stock tank, keeps slurry uniform；
(2) slurry after mixing passes sequentially through after stock tank, low dense fiberizer and straw pulp after decker, concentration are kowtowed and starches tower, obtains
Slurry after to mashing；Mashing, is beaten in low dense fiberizer, and defibrination revolving speed is 10000-20000r/min, is beaten dense
Degree is 10% or less.After mashing, the beating degree of gained slurry is 20-40 ° of SR, weight in wet base 7-10g, water retention value 110-
150%；
(3) after with inorganic filler is added in stock tank, the anionic component is first added, under the stirring rate of 700-2000r/min
Enter paper machine stock tank after reacting 20-60s；Prepare the anionic component: the hydrogen for being 30%-60% with concentration by the chitin after cleaning
Sodium hydroxide solution is dissolved in the acetic acid solution that concentration is 1-10% after being washed to neutrality, adjusts in 120-140 DEG C of processing 2-3h
PH value to 9-10, every liter of liquid adds the K of 1-100g2S2O8And reducing agent, stirring are warming up to 40-50 DEG C, and acrylamide, yin is added
Ion monomer is graft-polymerized, reaction time 2-3h, and being adjusted to pH value is 6-10, obtains the anionic component；
(4) cationic components then are added into the slurry of step (3) paper machine stock tank, in the stirring rate of 400-1400r/min
Enter header box after lower reaction 30-90s；Prepare cationic components: the hydrogen for being 30%-60% with concentration by the chitin after cleaning
Sodium hydroxide solution is dissolved in the acetic acid solution that concentration is 1-10% after being washed to neutrality, adjusts in 120-140 DEG C of processing 2-3h
PH value to 9-10, every liter of liquid adds the K of 1-100g2S2O8And reducing agent, stirring are warming up to 40-50 DEG C, and acrylamide, sun is added
Ion monomer is graft-polymerized, and reaction time 2-3h is adjusted to required pH value, obtains cationic components；
(5) by slurry obtained by step (4) on paper machine successively through fan pump, wet end, blanket portion press section and the first drying section, obtain
Paper is formed, the moisture content of the molding paper is lower than 8.1wt%；
(6) add after molding paper obtained by step (5) being sequentially sent to calender, the second drying section, reel machine and high-speed cutter
The writing paper as made from non-timber class paper pulp is made in work.
4. the preparation method of the writing paper according to claim 3 as made from non-timber class paper pulp, it is characterised in that: in step
Suddenly in (3), the anionic monomer is the alkenes compounds for inhaling electric base by force containing itrile group, carbonyl；The inorganic filler is
At least one of talcum powder, calcium carbonate, wollastonite, mica powder, kaolin, barium sulfate or aluminum silicon powder；
In step (4), the cationic monomer is the alkenes compounds for containing 1,1- dialkyl group, alkoxy；In step (3)
In step (4), the reducing agent is Na2SO3、FeSO4Or any one in HCl；
In step (5), the speed of the paper machine is 200-400m/min；The online when slurry flows into wet end from header box
Concentration is 0.1%-1.0%, and wet end is 50-200 mesh.
5. the preparation method of the writing paper according to claim 4 as made from non-timber class paper pulp, it is characterised in that: in step
Suddenly in (3), the anionic monomer is any one in acrylonitrile, anionic polyacrylamide or anionic starch, described
Inorganic filler be talcum powder；Preferably talc powder is considered from performance, environmental protection, cost angle；In step (4), cationic monomer
For any one in isobutene, cationic polyacrylamide, cationic starch；In step (5), the speed of the paper machine is
250-350m/min；The wet end when slurry flows into wet end from header box is 50-150 mesh.
6. the preparation method of the writing paper according to claim 4 as made from non-timber class paper pulp, it is characterised in that: in step
Suddenly in (5), the wet end when slurry flows into wet end from header box is 50-200 mesh.
7. the writing paper of any of claims 1 or 2 as made from non-timber class paper pulp, which is characterized in that chitin derivativ shell
The preparation of glycans paper making additive includes the following steps:
(1) prepare the anionic component: the sodium hydroxide solution that the chitin after will be clean is 30%-60% with concentration is in 120-
140 DEG C of processing 2-3h are dissolved in the acetic acid solution that concentration is 1-10%, adjusting pH value to 9-10, every liter after being washed to neutrality
Liquid adds the K2S2O8 and reducing agent of 1-100g, and stirring is warming up to 40-50 DEG C, acrylamide is added, anionic monomer is connect
Branch polymerization, reaction time 2-3h, being adjusted to pH value is 6-10, obtains the anionic component；
(2) prepare cationic components: the sodium hydroxide solution that the chitin after will be clean is 30%-60% with concentration is in 120-
140 DEG C of processing 2-3h are dissolved in the acetic acid solution that concentration is 1-10%, adjusting pH value to 9-10, every liter after being washed to neutrality
Liquid adds the K of 1-100g2S2O8And reducing agent, stirring are warming up to 40-50 DEG C, and acrylamide is added, cationic monomer is grafted
Polymerization, reaction time 2-3h, being adjusted to pH value is 3-8, obtains cationic components；
(3) by above-mentioned steps (1) and step (2), chitin derivativ chitosan class paper making additive is made.
8. the writing paper according to claim 7 as made from non-timber class paper pulp, which is characterized in that in chitin derivativ
When prepared by chitosan class paper making additive, in step (1), the content of the chitosan in the anionic component is 1-10%, institute
The chitosan stated is the derivative of chitin deacetylation；In step (2), the content of the chitosan in the cationic components
For 1%-10%, the molecular weight of the chitosan is 1 to 10 ten thousand；In step (3), the anionic component and cationic components
Mass ratio be 0.16:0.5-0.8.
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| CN101760981A (en) * | 2008-11-28 | 2010-06-30 | 山东福荫造纸环保科技有限公司 | Low-whiteness mixed pulp and paper containing the same |
| CN102311519A (en) * | 2011-06-01 | 2012-01-11 | 西安建筑科技大学 | Method for preparing ternary graft-modified polymer |
| CN105780583A (en) * | 2016-03-25 | 2016-07-20 | 安徽格义循环经济产业园有限公司 | Non-wood type paper pulp |
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