CN105887555A - Papermaking method capable of improving paper forming strength performance - Google Patents
Papermaking method capable of improving paper forming strength performance Download PDFInfo
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- CN105887555A CN105887555A CN201610228198.8A CN201610228198A CN105887555A CN 105887555 A CN105887555 A CN 105887555A CN 201610228198 A CN201610228198 A CN 201610228198A CN 105887555 A CN105887555 A CN 105887555A
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- paper
- slurry
- fiber fines
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- pulp
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Classifications
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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
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/10—Composite fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/65—Acid compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
-
- 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
- D21H21/10—Retention agents or drainage improvers
-
- 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
- D21H21/14—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 characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses a papermaking method capable of improving paper forming strength performance. Calcium silicate filler and fine fibers are compounded with the adoption of acid, compounded filler is added to ground plant fibers, and filling paper is obtained after the mixture is put on a net, formed, pressed and dried. By means of the method, the strength performance of the calcium silicate filling paper can be remarkably improved, and the papermaking method has remarkable advantages in the aspect of development of high-filler paper.
Description
Technical field
The invention belongs to field of papermaking, be specifically related to a kind of papermaking process improving paper strength performance.
Background technology
In paper-making process, add filler on the one hand can be effectively improved into paper optical property and printability, separately
On the one hand, owing to filler cost is less than fiber, use filler to also help reduction production cost.Therefore,
Improve one of target becoming paper industry pursuit of the filer content in paper.But, add meeting after filler
Reduce paper strength performance, thus cause paper surface hair and powder dropping, production process to break the problem of paper, because of
This existing document uses and filler is carried out pretreatment, to improve the strength character being filled with paper.
These preprocess methods include using the macromolecular material containing hydroxyl such as starch, chitosan to filler
Surface coating or employing high molecular polymer carry out the methods such as pre-wadding gathers to filler, and prepare tiny fibre
The method of dimension-filler compounded mix.Wherein, in the preparation method about fiber fines-filler compounded mix,
The method often using fabricated in situ, will synthesize on fiber or fiber fines to change in inorganic filler
Kind paper properties.But in building-up process, need to control the strictest process conditions, such as temperature,
Pressure, concentration etc., paper is played potentiation by the compounded mix of formation only fiber fines, and
Filler itself still can not produce good combination with fiber.
Summary of the invention
It is an object of the invention to provide a kind of papermaking process improving paper strength performance, above-mentioned to overcome
The defect that prior art exists, the inventive method can be carried out at normal temperatures, and governing factor is less, and institute
The compounded mix of preparation can significantly improve the strength character of paper.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
A kind of papermaking process improving paper strength performance, comprises the following steps:
Step one: chemistry softwood pulp is mixed defibrination with chemistry hardwood pulp according to the ratio of 1:4～4:1,
Obtain grinding disposed slurry, then mill disposed slurry is sieved, obtain fiber fines slurry, to fiber fines slurry
After concentration, obtain fiber fines and concentrate slurry；
Step 2: calcium silicate filling material is configured to filler suspension, adds fiber fines and concentrates slurry, obtain
The mixing suspension of fiber fines and calcium silicates, mixing suspension is stirred, while stirring to
Filler suspension is gradually added into the acid solution that mass concentration is 10%～60%, makes suspension mixed
PH=4～6, obtains fiber fines and calcium silicates complex；
Step 3: after chemistry softwood pulp is carried out size degradation respectively with chemistry hardwood pulp, after dilute
Chemistry softwood pulp is carried out defibrination with chemistry hardwood pulp proportioning, after defibrination completes, by the paper pulp after mill
Dilute, obtains diluted slurry；
Step 4: add fiber fines and calcium silicates complex in diluted slurry, and mix homogeneously is formed
Copy paper paper stock；Retention agent is added in copy paper paper stock, be sufficiently mixed rear Top wire former with copy paper paper stock, enter
Row copy paper.
Further, in step one by chemistry softwood pulp with chemistry hardwood pulp according to the matter of 1:4～4:1
Amount is 50 ° of SR～90 ° of SR than mixing defibrination to beating degree, obtains grinding disposed slurry, is passed through by mill disposed slurry
200 eye mesh screens, obtain the fiber fines slurry of a size of 2 μm～76 μm, to fiber fines pulp concentration
After, obtain the fiber fines that mass concentration is 30%～70% and concentrate slurry.
Further, the calcium silicate filling material mean diameter in step 2 is 10～30 μm, and whiteness is
85%ISO～95%ISO.
Further, the one or many during the acid solution in step 2 is sulphuric acid, phosphoric acid, acetic acid or nitric acid
The mixture planted.
Further, calcium silicate filling material is configured to the filler suspension that mass fraction is 5～15% by step 2
In liquid, and mixing suspension, the absolute dry mass of fiber fines and calcium silicates is than for 1:10～10:1.
Further, step 2 is 500～800r/min to mixing speed during mixing suspension pretreatment.
Further, after chemistry softwood pulp is carried out size degradation with chemistry hardwood pulp by step 3 respectively,
Dilute also makes stock quality concentration be 10%, then according to chemistry softwood pulp: chemistry leaf wood
Slurry mass ratio is that 1:4 carries out defibrination, after defibrination completes, the paper pulp after mill is diluted with water to mass concentration
Being 0.1%～0.3%, obtaining beating degree is 30 ° of SR～the diluted slurry of 45 ° of SR.
Further, in step 4, fiber fines and the addition of calcium silicates complex are exhausted in diluted slurry
The 20%～50% of dry measure.
Further, the retention agent in step 4 is PAMC, and its addition is 0.3 thousand
G ton paper～0.5 kg/ton paper.
Further, retention agent is added in copy paper paper stock by step 4, mixes 20～40s with copy paper paper stock
Rear Top wire former, carries out copy paper.
Compared with prior art, the present invention has a following useful technique effect:
After the present invention is by using acid solution to process calcium silicates, calcium silicates surface can be excited to produce a large amount of silicon
Hydroxyl so that it is form chemical bond with fiber fines surface hydroxyl, thus define calcium silicates and tiny fibre
The compounded mix of dimension, meanwhile, owing to calcium silicate filling material is after peracid solutions processes, on the one hand its table
Face activity is improved, and on the other hand, calcium silicates part can be dissolved, and forms calcium sulfate, calcium phosphate
Etc. multiple composite precipitation thing, this precipitate can with fiber fines further in conjunction with, form complex, thus enter
One step improves the bond strength of filler and fiber fines.During sheet formation, calcium silicate filling material warp
After processing activation, its surface silanol group can form chemical bond with fiber surface hydroxyl used by copy paper, it addition,
Fiber fines in compounded mix also can form hydrogen bonded with fiber used by copy paper, under both effects, altogether
With the raising promoting the strength character being filled with paper.Test result indicate that, at identical Substance, copy
Under the conditions of making technique bar and filer content, through compounded mix filled paper tensile strength and tear strength properties
Being better than the strength character of the filled paper without Combined Processing, the raising of tensile strength properties shows to enter filler
The adhesion of filler and fiber is improved, it is meant that have the sky improving filer content further after row pretreatment
Between, meet the requirement of high filler papermaking.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1
Step one: chemistry softwood pulp is mixed defibrination to beating with chemistry hardwood pulp according to the ratio of 1:4
The degree of beating is 50 ° of SR, obtains grinding disposed slurry, then mill disposed slurry is crossed 200 mesh sieves, obtain a size of 2 μm
Fiber fines slurry, after fiber fines pulp concentration, obtain the fiber fines that mass concentration is 30%
Concentrate slurry；
Step 2: calcium silicate filling material is configured to the filler suspension that mass fraction is 5%, adds tiny
Fiber concentrates slurry, it is thus achieved that fiber fines and the mixing suspension of calcium silicates, and tiny in mixing suspension
Mixing suspension, than for 1:10, is stirred by the absolute dry mass of fiber and calcium silicates with the speed of 500r/min
Mix, in filler suspension, be gradually added into the sulfuric acid solution that mass concentration is 10% while stirring, make to mix
Close the pH=4 of suspension, obtain fiber fines and calcium silicates complex；
Step 3: after respectively chemistry softwood pulp is carried out size degradation with chemistry hardwood pulp, dilute is also
Stock quality concentration is made to be 10%, then according to chemistry softwood pulp: chemistry hardwood pulp mass ratio is
1:4 carries out defibrination, and after defibrination completes, the paper pulp after mill is diluted with water to mass concentration is 0.1%,
To the diluted slurry that beating degree is 30 ° of SR；
Step 4: add fiber fines and calcium silicates complex in diluted slurry, wherein fiber fines with
The addition of calcium silicates complex is in diluted slurry the 20% of oven-dry weight, and mix homogeneously forms copy paper paper
Material；PAMC is added in copy paper paper stock according to the addition of 0.3 kg/ton paper, and copies
Paper paper stock is sufficiently mixed Top wire former after 20s, carries out copy paper, and the physical property of gained paper is shown in Table 1.
Table 1 embodiment 1 paper physical property testing result
Embodiment 2
Step one: chemistry softwood pulp is mixed defibrination to beating with chemistry hardwood pulp according to the ratio of 4:1
The degree of beating is 90 ° of SR, obtains grinding disposed slurry, then mill disposed slurry is crossed 200 mesh sieves, obtain a size of 76 μm
Fiber fines slurry, after fiber fines pulp concentration, obtain the fiber fines that mass concentration is 70%
Concentrate slurry；
Step 2: calcium silicate filling material is configured to the filler suspension that mass fraction is 15%, adds tiny
Fiber concentrates slurry, it is thus achieved that fiber fines and the mixing suspension of calcium silicates, and tiny in mixing suspension
Mixing suspension, than for 10:1, is stirred by the absolute dry mass of fiber and calcium silicates with the speed of 800r/min
Mix, in filler suspension, while stirring, be gradually added into the mixed of nitric acid that mass concentration is 60% and phosphoric acid
Close solution, make suspension mixed pH=6, obtain fiber fines and calcium silicates complex；
Step 3: after respectively chemistry softwood pulp is carried out size degradation with chemistry hardwood pulp, dilute is also
Stock quality concentration is made to be 10%, then according to chemistry softwood pulp: chemistry hardwood pulp mass ratio is
1:4 carries out defibrination, and after defibrination completes, the paper pulp after mill is diluted with water to mass concentration is 0.3%,
To the diluted slurry that beating degree is 45 ° of SR；
Step 4: add fiber fines and calcium silicates complex in diluted slurry, wherein fiber fines with
The addition of calcium silicates complex is in diluted slurry the 50% of oven-dry weight, and mix homogeneously forms copy paper paper
Material；PAMC is added in copy paper paper stock according to the addition of 0.5 kg/ton paper, and copies
Paper paper stock is sufficiently mixed Top wire former after 40s, carries out copy paper, and the physical property of gained paper is shown in Table 2.
Table 2 embodiment 2 paper physical property testing result
Embodiment 3
Step one: chemistry softwood pulp is mixed defibrination to beating with chemistry hardwood pulp according to the ratio of 1:1
The degree of beating is 70 ° of SR, obtains grinding disposed slurry, then mill disposed slurry is crossed 200 mesh sieves, obtain a size of 50 μm
Fiber fines slurry, after fiber fines pulp concentration, obtain the fiber fines that mass concentration is 50%
Concentrate slurry；
Step 2: calcium silicate filling material is configured to the filler suspension that mass fraction is 10%, adds tiny
Fiber concentrates slurry, it is thus achieved that fiber fines and the mixing suspension of calcium silicates, and tiny in mixing suspension
Mixing suspension, than for 1:1, is stirred by the absolute dry mass of fiber and calcium silicates with the speed of 600r/min
Mix, in filler suspension, while stirring, be gradually added into sulphuric acid, acetic acid and nitre that mass concentration is 40%
The mixed solution of acid, makes suspension mixed pH=5, obtains fiber fines and calcium silicates complex；
Step 3: after respectively chemistry softwood pulp is carried out size degradation with chemistry hardwood pulp, dilute is also
Stock quality concentration is made to be 10%, then according to chemistry softwood pulp: chemistry hardwood pulp mass ratio is
1:4 carries out defibrination, and after defibrination completes, the paper pulp after mill is diluted with water to mass concentration is 0.2%,
To the diluted slurry that beating degree is 40 ° of SR；
Step 4: add fiber fines and calcium silicates complex in diluted slurry, wherein fiber fines with
The addition of calcium silicates complex is in diluted slurry the 30% of oven-dry weight, and mix homogeneously forms copy paper paper
Material；PAMC is added in copy paper paper stock according to the addition of 0.4 kg/ton paper, and copies
Paper paper stock is sufficiently mixed Top wire former after 30s, carries out copy paper, and the physical property of gained paper is shown in Table 3.
Table 3 embodiment 3 paper physical property testing result
Result above shows, under the conditions of identical Substance, papermaking process bar and filer content, uses
The filled paper tensile strength of compounded mix and tear strength properties are better than non-composite calcium silicate filler filled paper
Strength character, the raising of tensile strength properties shows that compounded mix improves the adhesion of filler and fiber,
Mean there is the space improving filer content further, be conducive to developing high loaded sheet.
Claims (10)
1. the papermaking process improving paper strength performance, it is characterised in that comprise the following steps:
Step one: chemistry softwood pulp is mixed defibrination with chemistry hardwood pulp according to the ratio of 1:4～4:1,
Obtain grinding disposed slurry, then mill disposed slurry is sieved, obtain fiber fines slurry, to fiber fines slurry
After concentration, obtain fiber fines and concentrate slurry；
Step 2: calcium silicate filling material is configured to filler suspension, adds fiber fines and concentrates slurry, obtain
The mixing suspension of fiber fines and calcium silicates, mixing suspension is stirred, while stirring to
Filler suspension is gradually added into the acid solution that mass concentration is 10%～60%, makes suspension mixed
PH=4～6, obtains fiber fines and calcium silicates complex；
Step 3: after chemistry softwood pulp is carried out size degradation respectively with chemistry hardwood pulp, after dilute
Chemistry softwood pulp is carried out defibrination with chemistry hardwood pulp proportioning, after defibrination completes, by the paper pulp after mill
Dilute, obtains diluted slurry；
Step 4: add fiber fines and calcium silicates complex in diluted slurry, and mix homogeneously is formed
Copy paper paper stock；Retention agent is added in copy paper paper stock, be sufficiently mixed rear Top wire former with copy paper paper stock, enter
Row copy paper.
A kind of papermaking process improving paper strength performance the most according to claim 1, its feature exists
In, chemistry softwood pulp is compared mixer mill with chemistry hardwood pulp according to the quality of 1:4～4:1 by step one
Slurry is 50 ° of SR～90 ° of SR to beating degree, obtains grinding disposed slurry, and mill disposed slurry is passed through 200 eye mesh screens,
Obtain the fiber fines slurry of a size of 2 μm～76 μm, after fiber fines pulp concentration, obtain quality
Concentration is the fiber fines concentration slurry of 30%～70%.
A kind of papermaking process improving paper strength performance the most according to claim 1, its feature exists
In, the calcium silicate filling material mean diameter in step 2 is 10～30 μm, and whiteness is 85%ISO～95%ISO.
A kind of papermaking process improving paper strength performance the most according to claim 1, its feature exists
In, the acid solution in step 2 is the mixture of one or more in sulphuric acid, phosphoric acid, acetic acid or nitric acid.
A kind of papermaking process improving paper strength performance the most according to claim 1, its feature exists
In, calcium silicate filling material is configured to the filler suspension that mass fraction is 5～15%, and mixing by step 2
In suspension, the absolute dry mass of fiber fines and calcium silicates is than for 1:10～10:1.
A kind of papermaking process improving paper strength performance the most according to claim 1, its feature exists
In, step 2 is 500～800r/min to mixing speed during mixing suspension pretreatment.
A kind of papermaking process improving paper strength performance the most according to claim 1, its feature exists
In, after respectively chemistry softwood pulp being carried out size degradation with chemistry hardwood pulp in step 3, dilute is also
Stock quality concentration is made to be 10%, then according to chemistry softwood pulp: chemistry hardwood pulp mass ratio is
1:4 carries out defibrination, and after defibrination completes, the paper pulp after mill is diluted with water to mass concentration is 0.1%～0.3%,
Obtaining beating degree is 30 ° of SR～the diluted slurry of 45 ° of SR.
A kind of papermaking process improving paper strength performance the most according to claim 1, its feature exists
In, in step 4, fiber fines is oven-dry weight in diluted slurry with the addition of calcium silicates complex
20%～50%.
A kind of papermaking process improving paper strength performance the most according to claim 1, its feature exists
In, the retention agent in step 4 is PAMC, and its addition is 0.3 kg/ton paper～0.5
Kg/ton paper.
A kind of papermaking process improving paper strength performance the most according to claim 1, its feature
It is, retention agent is added in copy paper paper stock by step 4, surf the Net into after copy paper paper stock mixing 20～40s
Shape, carries out copy paper.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610228198.8A CN105887555B (en) | 2016-04-13 | 2016-04-13 | It is a kind of to improve the papermaking process of paper strength performance |
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| CN201610228198.8A CN105887555B (en) | 2016-04-13 | 2016-04-13 | It is a kind of to improve the papermaking process of paper strength performance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638123A (en) * | 2016-12-30 | 2017-05-10 | 芜湖市哈贝纸业有限公司 | Composite filler paper and production process thereof |
| CN110546322A (en) * | 2017-04-27 | 2019-12-06 | 日本制纸株式会社 | Method for producing inorganic particle composite fiber |
| CN112522997A (en) * | 2020-11-27 | 2021-03-19 | 山东鲁阳节能材料股份有限公司 | Toughening agent of inorganic heat-insulating material and preparation method and application thereof |
| CN113106775A (en) * | 2020-01-10 | 2021-07-13 | 中国制浆造纸研究院有限公司 | Method for improving papermaking water filtering performance by adopting microfibrillated fiber |
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| CN103147347A (en) * | 2013-03-07 | 2013-06-12 | 陕西科技大学 | Preparation method of composite filler for improving paper formation performance and method for preparing paper by using composite filler |
| CN103212282A (en) * | 2013-04-11 | 2013-07-24 | 陕西科技大学 | Method for reducing pH value of fly ash-coproduced calcium silicate filler for papermaking and purifying flue gas simultaneously |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113106775A (en) * | 2020-01-10 | 2021-07-13 | 中国制浆造纸研究院有限公司 | Method for improving papermaking water filtering performance by adopting microfibrillated fiber |
| CN112522997A (en) * | 2020-11-27 | 2021-03-19 | 山东鲁阳节能材料股份有限公司 | Toughening agent of inorganic heat-insulating material and preparation method and application thereof |
| CN112522997B (en) * | 2020-11-27 | 2022-10-18 | 山东鲁阳节能材料股份有限公司 | Toughening agent of inorganic heat-insulating material and preparation method and application thereof |
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| Publication number | Publication date |
|---|---|
| CN105887555B (en) | 2017-10-27 |
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