CN106894281A - A kind of paper grade (stock) fine particle calcium carbonate covered fiber filler and its preparation method and application - Google Patents
A kind of paper grade (stock) fine particle calcium carbonate covered fiber filler and its preparation method and application Download PDFInfo
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- CN106894281A CN106894281A CN201510955220.4A CN201510955220A CN106894281A CN 106894281 A CN106894281 A CN 106894281A CN 201510955220 A CN201510955220 A CN 201510955220A CN 106894281 A CN106894281 A CN 106894281A
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- calcium carbonate
- fine particle
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- particle calcium
- fiber filler
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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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
- D21H17/74—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic and inorganic material
-
- 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
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
- D21H17/29—Starch cationic
-
- 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
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/52—Epoxy resins
-
- 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
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
-
- 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
- D21H17/675—Oxides, hydroxides or carbonates
-
- 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
- D21H17/70—Inorganic compounds forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with other substances added separately
Abstract
The invention discloses a kind of paper grade (stock) fine particle calcium carbonate covered fiber filler, according to parts by weight, including following components:100 parts, pulp 30-40 parts, carbon dioxide 200-300 parts, Polyamide Epoxy 0.01-0.1 parts, polyacrylamide 0.04-0.1 parts, cationic starch 0.03-0.05 parts of calcium hydroxide;Also disclose a kind of preparation method and application of paper grade (stock) fine particle calcium carbonate covered fiber filler simultaneously.The calcium carbonate covered fiber filler can improve filler retention, reduce white water consistency, improve the plain boiled water circulatory system, and can improve into the quantitative of paper, ash, tensile strength, retention rate etc., save fiber consumption, reduces cost.
Description
Technical field
The present invention relates to pulp technology for making paper, more particularly to a kind of paper grade (stock) fine particle calcium carbonate covered fiber filler and its preparation
Method and the application in papermaking.
Background technology
With the development of paper technology, filler has turned into an essential component in most paper kinds,
It is one of solvent of papermaking.Add the purpose of filler to be mainly reduces cost in paper-making process, make paper
Obtain certain specific performance or improved its original performance.
Paper grade (stock) inorganic filler mainly has calcium carbonate, talcum powder, titanium dioxide, calcium carbonate etc., the addition energy of filler
Enough instead of fiber, the performance of paper can be improved, production cost can be reduced again, save paper pulp, reduce environment
Influence, mitigates ecological environment load.But on the one hand, with the increase of amount of filler, because proportion of fibers
Reduction causes the reduction of Hydrogenbond point quantity between fiber;On the other hand because between filler and filler or filling out
Hydrogen bonding forces can not be formed between material and fiber, and filler is clipped between fiber and fiber, spatially
Preventing fiber can be a greater impact with interfibrous Hydrogenbond, thus the intensity and cohesive force of paper, together
When filler retention often declined.Dramatically increase the tiny constituent content in mthod of white water from paper making system, thus
The difficulty of practical application is increased to a certain extent, and also making to be filled with measurer has certain limitation (generally to exist
15%~25%).
Therefore, fine particle calcium carbonate covered fiber filler is developed, the retention rate of filler is improved, fiber consumption is reduced, is China and foreign countries
Paper industry all compares this direction of concern at present;The present invention just to overcome that be filled with rear plain boiled water using conventional filler dense
Degree is high, retention is low, the shortcomings of paper strength is increased impacted larger by the filler amount of being filled with.
The content of the invention
" conventional filler is filled with that rear white water consistency is high, retention to solve present in above-mentioned existing paper technology
It is low, paper strength by the filler amount of being filled with increase it is impacted larger " problem.
The invention provides a kind of paper grade (stock) fine particle calcium carbonate covered fiber filler, using calcium carbonate covered fiber filler after,
Filler retention can be improved, white water consistency is reduced, improve the plain boiled water circulatory system, and determining for paper can be improved into
Amount, ash, tensile strength, retention rate etc., save fiber consumption, reduces cost.
Present invention also offers a kind of preparation method of paper grade (stock) fine particle calcium carbonate covered fiber filler, the method operation letter
Single, high yield rate saves cost of labor, improves economic benefit.
Present invention also offers a kind of application of paper grade (stock) fine particle calcium carbonate covered fiber filler in papermaking, by papermaking
Processed with fine particle calcium carbonate filler so as to improve retention, improved the quantitative of paper, ash, tensile strength, retained
Rate etc., saves fiber consumption, so as to reduce production cost, increases product competitiveness in the market.
To achieve the above object, the present invention uses following technical scheme:
The first aspect of the invention provides a kind of paper grade (stock) fine particle calcium carbonate covered fiber filler, using following parts by weight
Raw material prepare:
Further, the paper grade (stock) fine particle calcium carbonate covered fiber filler, is prepared using the raw material of following parts by weight:
Further, the paper grade (stock) fine particle calcium carbonate covered fiber filler, is prepared using the raw material of following parts by weight:
Further, the calcium hydroxide is configured to the solution that concentration is 15%~25%, less than 2 μm of particle
Content is higher than 35%, and whiteness is higher than 87.
Further, the pulp is needle slurry:Broad-leaved slurry=1:4~1:5, beating degree is 40 ° of SR~45 ° SR
Mixed slurry.
Further, the Polyamide Epoxy molecular weight is 3~60,000.
Further, the Molecular Weight for Polyacrylamide is 300-1000 ten thousand.
The second aspect of the invention provides a kind of preparation method of paper grade (stock) fine particle calcium carbonate covered fiber filler, specific bag
Include following steps:
Step 1, by Polyamide Epoxy solution, polyacrylamide solution and cationic starch solution in order
It is added in pulp solution, stirs;
Step 2, the blending ingredients after step 1 is stirred are added in aqua calcis, by dioxy
Change carbon gas (intake is converted into pure carbon dioxide amount);
Step 3, controlling reaction temperature is 10-35 DEG C, reaction time 1-3, and after abundant carburizing reagent, pH value reaches
8-9, filtering, distillation, is obtained paper grade (stock) fine particle calcium carbonate covered fiber filler.
Paper grade (stock) fine particle calcium carbonate covered fiber filler prepared by the preparation method, its solid content is 20%~30%, glues
Spend for 15~60cps, pH are that less than 8~9 and 2 μm particle contents are higher than 35%.
Further, the density of carbon dioxide gas is 45%-60%.
Further, the density of carbon dioxide gas is 50%.
Further, reaction temperature is 18 DEG C in the step 3, and the reaction time is 2h.
Further, the aqua calcis solid content is 15%~25%, and less than 2 μm particle contents are higher than
35%, whiteness is higher than 87.Butt addition is 100 parts, and other components are added by calcium hydroxide component.
Further, the pulp is needle slurry:Broad-leaved slurry=1:4~1:5, beating degree 400SR~450SR
Mixed slurry, be configured to the pulp solution that concentration is 0.7%~1.2%, relative addition of giving money as a gift is
30~40 parts.
Further, the pulp is needle slurry:Broad-leaved slurry=1:4.5, beating degree 400SR~450SR
Mixed slurry, be configured to the mixed slurry solution that concentration is 1.0%.
Further, the Polyamide Epoxy molecular weight is 3~60,000, and it is 3%~8% to be configured to concentration
Polyamide Epoxy solution;Preferably, concentration is configured to for 4-6%, the polyamide that pH value is 8~11
Epoxy resin solution, relative addition of giving money as a gift is 0.05-0.10 parts;It is highly preferred that be configured to concentration for 5%,
PH value is 8~11 Polyamide Epoxy solution.
Further, the Molecular Weight for Polyacrylamide is 300-1000 ten thousand, is configured to concentration for 0.1%-0.5%
Polyacrylamide solution, relative addition of giving money as a gift is 0.05-0.1 parts;Preferably, it is 0.3% to be configured to concentration
Polyacrylamide solution.
Further, the cationic starch is configured to the cationic starch solution that concentration is 0.8%~1.5%,
Relative addition of giving money as a gift is 0.03-0.05 parts;Preferably, it is 1.0% that the cationic starch is configured to concentration
Cationic starch solution.
Further, the density of carbon dioxide gas is 45%-60%.
Further, the density of carbon dioxide gas is 50%
It is above-mentioned, Polyamide Epoxy, mixed slurry, polyacrylamide, cationic starch respectively with water, first
Benzene, dimethylbenzene, alcohols (ethanol) and ketone (acetone) equal solvent are configured to the polyamides of respective concentration
Amine epoxy resin solution, mixed slurry solution, polyacrylamide solution, cationic starch solution, preferably match somebody with somebody
It is made the corresponding aqueous solution.
The third aspect of the invention provides a kind of application of fine particle calcium carbonate covered fiber filler in papermaking.
The fiberfill of obtained fine particle calcium carbonate cladding of the invention, is filled with, plain boiled water reduction by 21~25 as paper making wet part
Percentage point, filler retention improves 4~15 percentage points.Paper basis weight improves 1~5g/m2, and ash is improved
6~22 percentage points, tensile strength improves 5~11 percentage points, and total retention rate improves 2~5 percentage points;
Fine particle calcium carbonate covered fiber filler of the invention can replace fiber, cost-effective, can reduce white water consistency,
Improve plain boiled water circulation, mitigate ecological environment load.
The method for testing performance of paper grade (stock) fine particle calcium carbonate covered fiber filler of the present invention:
(1) dynamic drainage experiment
Design is by online concentration 0.6% (paper stock 3g over dry), design speed 750r/min, by load weighted paper
After slurry stirring 5 seconds, filler is stirred 5 seconds, is subsequently adding retention agent and is stirred 5 seconds, and opening draining valve is after 10 seconds
Take machine water 100ml, detection white water consistency, ash, parallel laboratory test 3 times.
(2) handsheet experiment
Design copy paper slurry 70g/m2, after load weighted paper pulp is stirred 1 minute, adds filler to stir 2 points
Clock, finally adds CPAM stirrings to remove for 2 minutes, the semi-automatic sheet forming apparatus handsheets of LABTECH73-62,
Natural air drying after being squeezed through LABTECH 73-50 standard pages squeezer, detection pattern whiteness, opacity,
The indexs such as intensity, ash.
The present invention uses above-mentioned technical proposal, compared with prior art, have the following technical effect that:
Fine particle calcium carbonate covered fiber applying filler of the invention in papermaking, fill out by 21~25 percentage points of plain boiled water reduction
Material retention rate improves 4~15 percentage points, hence it is evident that reduce white water consistency, increases white water recycling rate, saving portion
Distinguish water consumption;(2) paper basis weight improves 1~5g/m2, and ash improves 6~22 percentage points, and anti-tensile is strong
Degree improves 5~11 percentage points, and total retention rate improves 2~5 percentage points;(3) increase of filler retention,
Paper basis weight, the raising of ash content can reduce fiber consumption, save paper pulp, reduces cost, environmental protection;(4)
The raising of tensile strength, improves the quality of paper.
Fine particle calcium carbonate covered fiber filler of the invention can replace fiber, cost-effective, can reduce white water consistency,
Improve plain boiled water circulation, mitigate ecological environment load.Quantitative, ash content, total retention rate etc. can also be improved simultaneously,
Fiber consumption is reduced, reduces cost increases product competitiveness in the market.
Specific embodiment
Answering the invention provides a kind of paper grade (stock) fine particle calcium carbonate covered fiber filler and preparation method thereof and in papermaking
With.After calcium carbonate covered fiber filler, it is possible to increase filler retention, reduction white water consistency, improve
The plain boiled water circulatory system, and the quantitative of paper, ash, tensile strength, retention rate etc. can be improved into, save fiber and use
Amount, reduces cost.
The present invention is described in more detail below by specific embodiment, for a better understanding of this hair
It is bright, but following embodiments are not intended to limit the scope of the invention.
The preparation of the paper grade (stock) fine particle calcium carbonate covered fiber filler of embodiment 1
Step 1:By pulp for needle is starched:Broad-leaved slurry=1:4 paper pulp, the mixing of beating degree 400SR
Slurry, be configured to slurry it is dense be 0.8% pulp solution 5kg, be added sequentially in reactor, add it is dense
The Polyamide Epoxy solution 1g for 5% is spent, concentration is 0.3% polyacrylamide solution 16.5g, concentration
It is 0.8% cationic starch solution 5g, is that 450r/min stirs 20min in rotating speed, is well mixed it.
Step 2:By the aqua calcis that 500g solid contents are 20%, the fiber mixing of step 1 is added to
In component, rotating speed is 500r/min, and pressure is 0.3Mpa, and stirring 30min is well mixed it, is down to often
Pressure, rotating speed is 300r/min.
Step 3:The gas that gas concentration lwevel is 45% is passed through, at 18 DEG C ± 2 DEG C or so, abundant carburizing reagent,
PH is set to reach 8.5 or so, by filtering, distillation obtains solid content for 25% fine particle calcium carbonate covered fiber filler.
The preparation of the paper grade (stock) fine particle calcium carbonate covered fiber filler of embodiment 2
Step 1:By pulp for needle is starched:Broad-leaved slurry=1:4 paper pulp, the mixing of beating degree 400SR
Slurry, be configured to slurry it is dense be 0.8% pulp solution 3.75kg, be added in reactor, successively plus
Enter the Polyamide Epoxy solution 1g that concentration is 5%, concentration is 0.3% polyacrylamide solution 16.5g,
Concentration is 0.8% cationic starch solution 5g, is that 450r/min stirs 20min in rotating speed, makes its mixing equal
It is even.
Step 2:By the aqua calcis that 500g solid contents are 20%, the fiber mixing of step 1 is added to
In component, rotating speed is 500r/min, and pressure is 0.3Mpa, and stirring 30min is well mixed it, is down to often
Pressure, rotating speed is 300r/min.
Step 3:The gas that gas concentration lwevel is 45% is passed through, at 18 DEG C ± 2 DEG C or so, abundant carburizing reagent,
PH is set to reach 8.5 or so, by filtering, distillation obtains solid content for 25% fine particle calcium carbonate covered fiber filler.
The dynamic of embodiment 3 considers water experiment:
3.1 laboratory samples:
The paste fine particle calcium carbonate filler (trade mark of new material (Shandong) Co., Ltd production is risen from east:SSTL-PCC
GZ40) and fine particle calcium carbonate cladding fiberfill.
3.2 experiment conditions:
Wet end furnish:Needle slurry 20%+ broad-leaveds starch 80% (mixing slurry beating degree 400SR)
Surabaja cream calcium filler, the fiberfill of fine particle calcium carbonate calcium cladding, CPAM retentions;
Experimental technique:Slurry (75%)+filler (25%)+CPAM (200ppm);
(above addition is dry/dry)
Design is by online concentration 0.6% (paper stock 3g over dry), 750 turns of design speed, by load weighted paper pulp
After stirring 5 seconds, filler is stirred 5 seconds, is subsequently adding retention agent and is stirred 5 seconds, is opened draining valve and is taken after 10 seconds
Machine water 100ml, detection white water consistency, ash, parallel laboratory test 3 times.
3.3 experimental datas
Experimental data (1) experimental technique:Slurry (75%)+filler (25%)+CPAM (200ppm);
Experimental data (2) experimental technique:Slurry (75%)+filler (25%)+CPAM (200ppm);
Experimental data (3)
3.4 conclusions:
1st, after the fiberfill of addition fine particle calcium carbonate cladding is can be seen that by testing (1,2) result, plain boiled water is dense
Degree have dropped 21.4%~25.7%, and average total retention rate improves 2.5%~3.7%, and plain boiled water filter residue ash is reduced
2.6%~4.3%, fiber retention improves 1.2%~2.1%, and filler retention improves 4.1%~14.6%.
2nd, after experimental data (3) result can be seen that raising partial filler addition, under white water consistency
Drop, average total retention rate is improved, and plain boiled water filter residue ash reduction, fiber retention is improved, and trend is consistent.
Embodiment 4
4.1 laboratory samples:
The Surabaja cream calcium filler of new material (Shandong) Co., Ltd production, and the fiber that fine particle calcium carbonate is coated are risen from east
Filler.
4.2 needles slurry 20%+ broad-leaveds starch 80% (mixing slurry beating degree 400SR)
Technique one:Slurry (75%)+filler (25%)+CPAM (200ppm);
Technique two:Slurry (70%)+filler (30%)+CPAM (200ppm);
(above addition is dry/dry)
Common fine particle calcium carbonate filler, the fiberfill of fine particle calcium carbonate cladding
Design copy paper slurry 70g/m2, after load weighted paper pulp is stirred 1 minute, adds filler to stir 2 points
Clock, finally adds CPAM stirrings to remove for 2 minutes, the semi-automatic sheet forming apparatus handsheets of LABTECH73-62,
Natural air drying after being squeezed through LABTECH 73-50 standard pages squeezer, detection pattern whiteness, opacity,
The indexs such as intensity, ash.
4.3 experimental datas:
Experimental data (4) technique one:Slurry (75%)+filler (25%)+CPAM (200ppm);
Experimental data (5) technique one:Slurry (75%)+filler (25%)+CPAM (200ppm);
Experimental data (6)
4.4 conclusions:
1st, it is fixed after test data (4,5) result can be seen that the fiberfill that addition fine particle calcium carbonate is coated
Amount improves 1~5g/m2, calcination ash and improves 6.2%~22.5%, and tensile strength improves 5.7%~10.7%,
Total retention rate improves 1.8~5.1, and whiteness, opacity are close.
2nd, it is fixed after experimental data (6) result can be seen that and increase the fiberfill ratio that fine particle calcium carbonate is coated
Amount, the total retention rate of ash content tensile strength have the raising of different amplitudes, and whiteness, opacity are close.
Experimental analysis:
1st, be can be seen that when identical with former addition by result of the test, the fiber of addition fine particle calcium carbonate cladding is filled out
After material, white water consistency is decreased obviously 21~25 percentage points, and average total retention rate improves 2~4 percentage points,
Plain boiled water filter residue ash reduces 22~4 percentage points, and fiber retention improves 1~2 percentage point, and filler is protected
Rate is stayed to improve 4~15 percentage points.Paper basis weight improves 1~5g/m2, and ash improves 6~22 percentage points,
Tensile strength improves 5~11 percentage points, and total retention rate improves 2~5 percentage points.
2nd, constant in other conditions, amount of filler increases (increasing to 30% by 25%), white water consistency, plain boiled water
Filter residue ash decreases, and average total retention rate, fiber retention, filler retention have different amplitudes
Improve, paper basis weight, ash, tensile strength, total retention rate increase, and trend is consistent.
3rd, white water consistency declines, and retention rate is improved, and increases white water recycling rate, saves rinse dosage, dries and steam
The consumption of vapour, helps to save papermaking cost, mitigates ecological environment load.
The present invention is by a series of research, experiment, it was demonstrated that the fiberfill coated with fine particle calcium carbonate obtained in this method,
It is filled with as paper making wet part, 21~25 percentage points of plain boiled water reduction, filler retention improves 4~15 percentages
Point.Paper basis weight improves 1~5g/m2, and ash improves 6~22 percentage points, and tensile strength improves 5~11
Percentage point, total retention rate improves 2~5 percentage points;After increasing filler addition, white water consistency, plain boiled water
Filter residue ash decreases, and filler retention increases, the raising for having different amplitudes into paper indices
Therefore, white water consistency is significantly reduced using fine particle calcium carbonate covered fiber filler of the invention, increases white water recycling
Rate, saves part rinse dosage;The increase of filler retention, paper basis weight, the raising of ash content can reduce fibre
Wesy measures, and saves paper pulp, reduces cost, environmental protection, the raising of tensile strength, moreover it is possible to improve the matter of paper
Amount.
Specific embodiment of the invention has been described in detail above, but it is intended only as example, and the present invention is simultaneously
It is not restricted to particular embodiments described above.To those skilled in the art, it is any that the present invention is carried out
Equivalent modifications and substitute also all among scope of the invention.Therefore, spirit of the invention and model are not being departed from
Enclose lower made impartial conversion and change, all should be contained within the scope of the invention.
Claims (9)
1. a kind of paper grade (stock) fine particle calcium carbonate covered fiber filler, it is characterised in that prepared using the raw material of following parts by weight:
2. paper grade (stock) fine particle calcium carbonate covered fiber filler according to claim 1, it is characterised in that the hydroxide
Calcium is configured to the solution that concentration is 15%~25%, and less than 2 μm of particle content is higher than 35%, and whiteness is higher than 87.
3. paper grade (stock) fine particle calcium carbonate covered fiber filler according to claim 1, it is characterised in that the paper pulp slurry
Expect to be starched for needle:Broad-leaved slurry=1:4~1:5, beating degree is 40 ° of mixed slurries of SR~45 ° SR.
4. paper grade (stock) fine particle calcium carbonate covered fiber filler according to claim 1, it is characterised in that the titanium dioxide
Carbon gas concentration is 45%-60%.
5. paper grade (stock) fine particle calcium carbonate covered fiber filler according to claim 1, it is characterised in that the polyamide
Molecular weight of epoxy resin is 3~60,000.
6. paper grade (stock) fine particle calcium carbonate covered fiber filler according to claim 1, it is characterised in that the polypropylene
Amide molecule amount is 300-1000 ten thousand.
7. the preparation method of the paper grade (stock) fine particle calcium carbonate covered fiber filler as described in claim any one of 1-6, its feature
It is to comprise the following steps:
Step 1, by Polyamide Epoxy solution, polyacrylamide solution and cationic starch solution in order
It is added in pulp solution, stirs;
Step 2, the blending ingredients after step 1 is stirred are added in aqua calcis, by dioxy
Change carbon gas;
Step 3, controlling reaction temperature is 10-35 DEG C, reaction time 1-3, and after abundant carburizing reagent, pH value reaches
8-9, filtering, distillation is obtained paper grade (stock) fine particle calcium carbonate covered fiber filler.
8. the paper grade (stock) fine particle calcium carbonate covered fiber filler that prepared by method according to claim 7, its solid content is
20%~30%, viscosity is that 15~60cps, pH are that less than 8~9 and 2 μm particle contents are higher than 35%.
9. a kind of paper grade (stock) fine particle calcium carbonate covered fiber filler according to claim any one of 1-6 in papermaking should
With.
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CN101492893A (en) * | 2009-03-03 | 2009-07-29 | 金东纸业(江苏)股份有限公司 | Process for manufacturing calcium carbonate composite fiber and uses thereof |
CN103154369A (en) * | 2010-08-20 | 2013-06-12 | 芬欧汇川集团公司 | A method and a system for precipitation of calcium carbonate and a product comprising calcium carbonate |
WO2014174155A1 (en) * | 2013-04-26 | 2014-10-30 | Wetend Technologies Oy | A method of providing fiber web making furnish with filler, and paper or paper board |
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WO2005014934A2 (en) * | 2003-08-05 | 2005-02-17 | Voith Paper Patent Gmbh | Method for charging a fiber suspension, and arrangement for carrying out said method |
CN101031686A (en) * | 2004-07-14 | 2007-09-05 | 国际纸业公司 | Method to manufacture paper |
CN101492893A (en) * | 2009-03-03 | 2009-07-29 | 金东纸业(江苏)股份有限公司 | Process for manufacturing calcium carbonate composite fiber and uses thereof |
CN103154369A (en) * | 2010-08-20 | 2013-06-12 | 芬欧汇川集团公司 | A method and a system for precipitation of calcium carbonate and a product comprising calcium carbonate |
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