CN107653724A - A kind of body paper preparation technology by the use of modified calcium carbonate as filler - Google Patents
A kind of body paper preparation technology by the use of modified calcium carbonate as filler Download PDFInfo
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- CN107653724A CN107653724A CN201710896797.1A CN201710896797A CN107653724A CN 107653724 A CN107653724 A CN 107653724A CN 201710896797 A CN201710896797 A CN 201710896797A CN 107653724 A CN107653724 A CN 107653724A
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- calcium carbonate
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- modified calcium
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of 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
- 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
- D21H17/67—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
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention belongs to body paper preparing technical field.A kind of body paper preparation technology by the use of modified calcium carbonate as filler, comprise the following steps：(1) paper pulp raw material is put into after soaking 1.5~3h in 90~95 DEG C of water, carries out beating, obtain the paper pulp after beating；(2) using in the paper pulp after adding beating as the modified calcium carbonate of filler, mixed slurry is obtained after stirring；(3) after mixed slurry is diluted with water, coupling agent, sizing agent and curing agent are added, 30~45min is mixed under 55~65 DEG C, 150~180r/min, obtains paper making pulp；(4) paper making pulp for obtaining step (3) is added in paper machine, and progress body paper, which is made, to be copied, and is dried after squeezing, is obtained the body paper.Preparation technology of the present invention is simple, and filler still is able to improve intensity, whiteness and the opacity of paper, increases paper smoothness, improve paper printing characteristic under the higher amount of being filled with.
Description
Technical field
The invention belongs to body paper preparing technical field, and in particular to a kind of body paper system by the use of modified calcium carbonate as filler
Standby technique.
Background technology
In paper industry, filler of the calcium carbonate as paper product, the heat resistance, wearability, chi of paper can be improved
Very little stability, rigidity and machinability, calcium carbonate are added in paper as filler, can not only substitute Activities of Some Plants fiber, carry
The rate of water loss and sheet drying rate of high paper stock, energy consumption for drying is saved, so as to reduce cost, but also with many other excellent
Point, paper optical property is such as improved, improve the whiteness and opacity of paper, increase paper smoothness, improve paper printing characteristic
Deng.But calcium carbonate surface has a hydrophilic stronger hydroxyl, be presented stronger alkalescence, this hydrophilic and oleophobic property make calcium carbonate with
The hydrophily of organic polymer is poor, easily forms aggregation, cause it is uneven in high polymer inner dispersion, so as to cause two kinds of materials
Between boundary defect, direct application effect is bad.At present it is generally acknowledged that unmodified calcium carbonate is bad to the direct application effect of paper,
And calcium carbonate need further to improve as the performance such as filler, its acid resistance, smoothness, whiteness, calcium carbonate is applied to papermaking
Glue process can also be had a negative impact, and sizing agent is adsorbed on calcium carbonate particle surface, meets the bar of actual demand in paper product performance
Under part, make the demand of sizing agent increase.The application of calcium carbonate generally can also be to the bulk of paper and deflection etc. in certain journey
Degree has a negative impact.Therefore the application that the tradition based on unmodified calcium carbonate is filled with technology has certain limitation, is carrying
On the premise of high addition, the research tool for improving such negative effect is of great significance.
Therefore, it is badly in need of a kind of body paper preparation technology by the use of modified calcium carbonate as filler to solve the above problems.
The content of the invention
It is an object of the invention to provide a kind of body paper preparation technology by the use of modified calcium carbonate as filler, filler is set to exist
Under the higher amount of being filled with, it still is able to improve intensity, whiteness and the opacity of paper, increases paper smoothness, improves paper print
Brush performance.
A kind of body paper preparation technology by the use of modified calcium carbonate as filler, it is characterised in that comprise the following steps：
(1) paper pulp raw material is put into after soaking 1.5~3h in 90~95 DEG C of water, pulls out to be put into pulper and kowtowed
Solution, obtains the paper pulp after beating, standby；
(2) using in the paper pulp after adding step (1) beating as the modified calcium carbonate of filler, mixed after stirring
Slurry；
(3) after the mixed slurry that step (2) obtains is diluted with water, relative mixed slurry quality 0.5~2.5% is added
Coupling agent, relative mixed slurry quality 0.2~1.5% sizing agent and relative mixed slurry quality 0.3~1.8% harden
Agent, 30~45min is mixed under 55~65 DEG C, 150~180r/min, obtains paper making pulp；
(4) paper making pulp for obtaining step (3) is added in paper machine, and progress body paper, which is made, to be copied, and is dried, is obtained after squeezing
The body paper.
Further, the modified calcium carbonate is prepared in accordance with the following methods：
(1) the following raw material is weighed by weight：105~115 parts of precipitated calcium carbonate, 32~38 parts of cationic starch, tristearin
It is sour 1.5~2.5 parts of sodium, 0.02~0.04 part of Sodium Polyacrylate, 1.5~2.5 parts of bentonite, 0.2~0.7 part of chitosan, scattered
0.3~0.6 part of 0.7~1.2 part of agent and antioxidant, it is standby；
(2) precipitated calcium carbonate is added to the water, the calcium carbonate suspension that concentration is 40~55% is configured to, 70~80
DEG C water-bath in heat 15~20min while stirring, it is standby；
(3) cationic starch is added to the water, the starch suspension that concentration is 50-65% is configured to, at 80~85 DEG C
At a temperature of stir 10~15 minutes, 20~30min is then gelatinized at 92~95 DEG C；
(4) then added dense to 8~10 with the starch solution pH value after the NaOH solution regulation gelatinization that concentration is 5~8%
The sodium stearate solution for 10~15% is spent, 20~30min is mixed under 80~90 DEG C, 200~250r/min, is formed multiple
Compound, it is standby；
(5) compound obtained by step (4) is added in the calcium carbonate suspension obtained by step (3), at 40~45 DEG C
10~15min of lower stirring, Sodium Polyacrylate, bentonite and chitosan are then added, obtain mixed emulsion after being well mixed, add
Dispersant and antioxidant, 40~50min is mixed under 75~85 DEG C, 250~300r/min, obtains modified calcium carbonate.
Further, the coupling agent is silane coupler, and the sizing agent is AKD sizing agents, and the curing agent is phosphorus
Sour trimethyl curing agent.
Further, the dispersant is PEO dispersants.
Further, beating degree is 40~48 ° of SR in the step (1).
Further, the percentage for the pulp quality that modified calcium carbonate described in the step (2) is accounted for after beating for 12~
18%.
Further, in the step (3), the mixed slurry obtained to step (2) is diluted with water to 4.5~6.5%
Concentration.
Further, the antioxidant by propylgallate and inclined sulfite with weight ratio 1:2~5 mixing
It is made.
Further, the mass ratio of the compound and the calcium carbonate suspension is 40:100~120.
Compared with prior art, beneficial effects of the present invention are：
1st, the present invention is by the use of modified calcium carbonate as the body paper preparation technology of filler, using by modified calcium carbonate conduct
Filler, solve the problems, such as body paper impact and antistatic property etc..The modified calcium carbonate is uniformly dispersed, suspended
Stability is good, high effect nontoxic, easily controllable, and alkali resistant anti-salt property is strong.Appropriate stearic acid is added in the precipitated calcium carbonate
Sodium, Sodium Polyacrylate, bentonite and chitosan, the bursting strength, folding strength and breaking length of paper can be effectively improved, is improved
The lubricity and gloss of calcium carbonate, increase the affinity to oil, reduce the affinity to water.Add cationic starch on the one hand
Starch has hydroxyl structure, can form hydrogen bond with fiber, it is coated on the surface of filler, can increase filler and bamboo pulp fiber
Between adhesion, and starch has preferable film forming and the reason for can improve paper strength, modified calcium carbonate energy
Enough avoid pearl filler from being contacted with the direct of paper pulp fiber, and become contact of the starch gel with paper pulp raw material fiber, formed
Hydrogen bond couples, and slow down the fall for being filled with paper strength character, pearl filler after modified, in a particle or several
The cluster of grains surface that particle aggregation is formed covers a stratum granulosum, and the odium stearate added can further make pearl filler
The particle diameter increase of particle, so as to be advantageous to be filled with the improvement of paper strength character, the raising of filler retention.Add in right amount
PEO dispersants, dispersant is adhered to the surface of calcium carbonate, not free settling, be uniformly dispersed, suspension stability is good, and enters one
Step enhances the lubricity, water resistance and heat-resisting quantity of calcium carbonate.Add by propylgallate and inclined sulfite with weight
Part ratio 1:2-5 is mixed to prepare antioxidant, can reduce the degree of oxidation of raw material, improves the whiteness and opacity of paper.
2nd, the present invention, to suitable solution degree of kowtowing, can effectively improve the bursting strength, resistance to of paper by the way that paper pulp raw material solution is kowtowed
Folding degree and breaking length；Intermiscibility between calcium carbonate and paper pulp raw material can be strengthened by adding appropriate silane coupler, and AKD is applied
Jelly has hydrophilic radical and hydrophobic grouping, after adding appropriate AKD sizing agents, is orientated outside on wood pulp cellulose surface
Hydrophobic grouping, make body paper hydrophobic property and resist fluids permeability, thus it is possible to vary the air permeability of body paper, increase body paper surface are rubbed
Coefficient is wiped, makes to be not easy to be peeled off between the rich modeling of body paper and top layer, adding appropriate curing agent makes modified calcium carbonate have table
Face is wear-resisting, the characteristic such as oleophilic drainage, sizing efficiency height, and modified calcium carbonate has preferable compatibility with polymer, enhances
Interface interaction, the effect of shearing force during follow-up pulp flow can be subjected to and manufactured paper with pulp.
3rd, a kind of body paper preparation technology by the use of modified calcium carbonate as filler of the invention is simple to operate, and cost is relatively low, easily
In popularization, have a extensive future.
Embodiment
Embodiment 1
1st, the preparation of early stage
The preparation of modified calcium carbonate：
(1) the following raw material is weighed by weight：105 parts of precipitated calcium carbonate, 32 parts of cationic starch, 1.5 parts of odium stearate,
0.02 part of Sodium Polyacrylate, 1.5 parts of bentonite, 0.2 part of chitosan, 0.7 part of PEO dispersants and and by propylgallate and partially
Sulfite is with weight ratio 1:0.3 part of the antioxidant that 2-5 is mixed to prepare, it is standby；
(2) precipitated calcium carbonate is added to the water, the calcium carbonate suspension that concentration is 40% is configured to, in 70 DEG C of water-bath
In heat 15min while stirring, it is standby；
(3) cationic starch is added to the water, is configured to the starch suspension that concentration is 50%, is stirred at a temperature of 80 DEG C
Mix 10 minutes, be then gelatinized 20min at 92 DEG C；
(4) with the starch solution pH value after the NaOH solution regulation gelatinization that concentration is 5% to 8, then adding concentration is
10% sodium stearate solution, 20min is mixed under 80 DEG C, 200r/min, form compound, it is standby；
(5) compound obtained by step (4) is added in the calcium carbonate suspension obtained by step (3), and it is described compound
The mass ratio of thing and the calcium carbonate suspension is 40:100,10min is stirred at 40 DEG C, then adds Sodium Polyacrylate, swollen
Profit soil and chitosan, mixed emulsion is obtained after being well mixed, PEO dispersants and antioxidant are added, under 75 DEG C, 250r/min
40min is mixed, obtains modified calcium carbonate.
The modified calcium carbonate that above-mentioned early stage is prepared is used for the preparation technology of following body paper.
2nd, a kind of body paper preparation technology by the use of modified calcium carbonate as filler, comprises the following steps：
(1) paper pulp raw material is put into after soaking 1.5h in 90 DEG C of water, pulls out and be put into progress beating, beating degree in pulper
For 40 ° of SR, the paper pulp after beating is obtained, it is standby；
(2) using in the paper pulp after adding step (1) beating as the modified calcium carbonate of filler, mixed after stirring
Slurry, wherein, the percentage for the pulp quality that the modified calcium carbonate is accounted for after beating is 12%；
(3) mixed slurry that step (2) obtains is diluted with water to 4.5% concentration, adds relative mixed slurry matter
The coupling agent of amount 0.5%, the sizing agent of relative mixed slurry quality 0.2% and the relative curing agent of mixed slurry quality 0.3%,
55 DEG C, mix 30min under 150r/min, obtain paper making pulp；
(4) paper making pulp for obtaining step (3) is added in paper machine, and progress body paper, which is made, to be copied, and is dried, is obtained after squeezing
The body paper.
Embodiment 2
1st, the preparation of early stage
The preparation of modified calcium carbonate
(1) the following raw material is weighed by weight：115 parts of precipitated calcium carbonate, 38 parts of cationic starch, 2.5 parts of odium stearate,
0.04 part of Sodium Polyacrylate, 2.5 parts of bentonite, 0.7 part of chitosan, 1.2 parts of PEO dispersants and by propylgallate and partially sub-
Sulfuric ester is with weight ratio 1:5 0.6 part of the antioxidants being mixed to prepare, it is standby；
(2) precipitated calcium carbonate is added to the water, the calcium carbonate suspension that concentration is 55% is configured to, in 80 DEG C of water-bath
In heat 20min while stirring, it is standby；
(3) cationic starch is added to the water, is configured to the starch suspension that concentration is 65%, is stirred at a temperature of 85 DEG C
Mix 15 minutes, be then gelatinized 30min at 95 DEG C；
(4) with the starch solution pH value after the NaOH solution regulation gelatinization that concentration is 8% to 10, then adding concentration is
15% sodium stearate solution, 30min is mixed under 90 DEG C, 250r/min, form compound, it is standby；
(5) compound obtained by step (4) is added in the calcium carbonate suspension obtained by step (3), and compound with
The mass ratio of the calcium carbonate suspension is 40:120,15min is stirred at 45 DEG C, then adds Sodium Polyacrylate, bentonite
And chitosan, mixed emulsion is obtained after being well mixed, PEO dispersants and antioxidant is added, is mixed under 85 DEG C, 300r/min
50min is stirred, obtains modified calcium carbonate.
The modified calcium carbonate that above-mentioned early stage is prepared is used for the preparation technology of following body paper.
2nd, a kind of body paper preparation technology by the use of modified calcium carbonate as filler, comprises the following steps：
(1) paper pulp raw material is put into after soaking 3h in 95 DEG C of water, pulls out and be put into the interior progress beating of pulper, beating degree is
48 ° of SR, the paper pulp after beating is obtained, it is standby；
(2) using in the paper pulp after adding step (1) beating as the modified calcium carbonate of filler, mixed after stirring
Slurry, wherein, the percentage for the pulp quality that the modified calcium carbonate is accounted for after beating is 18%；
(3) mixed slurry that step (2) obtains is diluted with water to 6.5% concentration, adds relative mixed slurry matter
The silane coupler of amount 2.5%, the AKD sizing agents of relative mixed slurry quality 1.5% and the relative phosphorus of mixed slurry quality 1.8%
Sour trimethyl curing agent, mixes 45min under 65 DEG C, 180r/min, obtains paper making pulp；
(4) paper making pulp for obtaining step (3) is added in paper machine, and progress body paper, which is made, to be copied, and is dried, is obtained after squeezing
The body paper.
Embodiment 3
1st, the preparation of early stage
The preparation of modified calcium carbonate
(1) the following raw material is weighed by weight：108 parts of precipitated calcium carbonate, cationic starch 32-38 parts, odium stearate 1.7
Part, 0.03 part of Sodium Polyacrylate, 1.7 parts of bentonite, 0.3 part of chitosan, 0.8 part of PEO dispersants and by propylgallate and
Inclined sulfite is with weight ratio 1:3 0.4 part of the antioxidants being mixed to prepare, it is standby；
(2) precipitated calcium carbonate is added to the water, the calcium carbonate suspension that concentration is 42% is configured to, in 72 DEG C of water-bath
In heat 17min while stirring, it is standby；
(3) cationic starch is added to the water, is configured to the starch suspension that concentration is 52%, is stirred at a temperature of 81 DEG C
Mix 11 minutes, be then gelatinized 21min at 93 DEG C；
(4) with the starch solution pH value after the NaOH solution regulation gelatinization that concentration is 6% to 9, then adding concentration is
11% sodium stearate solution, 22min is mixed under 82 DEG C, 210r/min, form compound, it is standby；
(5) compound obtained by step (4) is added in the calcium carbonate suspension obtained by step (3), and compound with
The mass ratio of the calcium carbonate suspension is 40:105,12min is stirred at 40-45 DEG C, then adds Sodium Polyacrylate, swelling
Soil and chitosan, mixed emulsion is obtained after being well mixed, adds PEO dispersants and antioxidant, is mixed under 78 DEG C, 260r/min
Stirring 42min is closed, obtains modified calcium carbonate.
The modified calcium carbonate that above-mentioned early stage is prepared is used for the preparation technology of following body paper.
2nd, a kind of body paper preparation technology by the use of modified calcium carbonate as filler, comprises the following steps：
(1) paper pulp raw material is put into after soaking 1.7h in 91 DEG C of water, pulls out and be put into progress beating, beating degree in pulper
For 42 ° of SR, the paper pulp after beating is obtained, it is standby；
(2) using in the paper pulp after adding step (1) beating as the modified calcium carbonate of filler, mixed after stirring
Slurry, wherein, the percentage for the pulp quality that the modified calcium carbonate is accounted for after beating is 13%；
(3) mixed slurry that step (2) obtains is diluted with water to 4.8% concentration, adds relative mixed slurry matter
The silane coupler of amount 1%, the AKD sizing agents of relative mixed slurry quality 0.5% and the relative phosphoric acid of mixed slurry quality 0.5%
Trimethyl curing agent, 35min is mixed under 57 DEG C, 155r/min, obtains paper making pulp；
(4) paper making pulp for obtaining step (3) is added in paper machine, and progress body paper, which is made, to be copied, and is dried, is obtained after squeezing
The body paper.
Embodiment 4
1st, the preparation of early stage
The preparation of modified calcium carbonate
(1) the following raw material is weighed by weight：It is 110 parts of precipitated calcium carbonate, 35 parts of cationic starch, 2 parts of odium stearate, poly-
0.03 part of PAA, 2 parts of bentonite, 0.5 part of chitosan, 0.9 part of PEO dispersants and by propylgallate and inclined sulfurous acid
Ester is with weight ratio 1:4 0.5 part of the antioxidants being mixed to prepare, it is standby；
(2) precipitated calcium carbonate is added to the water, the calcium carbonate suspension that concentration is 50% is configured to, in 74 DEG C of water-bath
In heat 17min while stirring, it is standby；
(3) cationic starch is added to the water, is configured to the starch suspension that concentration is 58%, is stirred at a temperature of 83 DEG C
Mix 13 minutes, be then gelatinized 25min at 94 DEG C；
(4) with the starch solution pH value after the NaOH solution regulation gelatinization that concentration is 7% to 9, then adding concentration is
13% sodium stearate solution, 25min is mixed under 85 DEG C, 240r/min, form compound, it is standby；
(5) compound obtained by step (4) is added in the calcium carbonate suspension obtained by step (3), and compound with
The mass ratio of the calcium carbonate suspension is 40:115,13min is stirred at 43 DEG C, then adds Sodium Polyacrylate, bentonite
And chitosan, mixed emulsion is obtained after being well mixed, PEO dispersants and antioxidant is added, is mixed under 80 DEG C, 270r/min
45min is stirred, obtains modified calcium carbonate.
The modified calcium carbonate that above-mentioned early stage is prepared is used for the preparation technology of following body paper.
2nd, a kind of body paper preparation technology by the use of modified calcium carbonate as filler, comprises the following steps：
(1) paper pulp raw material is put into after soaking 2.1h in 93 DEG C of water, pulls out and be put into progress beating, beating degree in pulper
For 44 ° of SR, the paper pulp after beating is obtained, it is standby；
(2) using in the paper pulp after adding step (1) beating as the modified calcium carbonate of filler, mixed after stirring
Slurry, wherein, the percentage for the pulp quality that the modified calcium carbonate is accounted for after beating is 15%；
(3) mixed slurry that step (2) obtains is diluted with water to 5% concentration, adds relative mixed slurry quality
1.2% silane coupler, the AKD sizing agents of relative mixed slurry quality 0.8% and the relative phosphoric acid of mixed slurry quality 1.2%
Trimethyl curing agent, 41min is mixed under 60 DEG C, 170r/min, obtains paper making pulp；
(4) paper making pulp for obtaining step (3) is added in paper machine, and progress body paper, which is made, to be copied, and is dried, is obtained after squeezing
The body paper.
Embodiment 5
1st, the preparation of early stage
The preparation of modified calcium carbonate
(1) the following raw material is weighed by weight：114 parts of precipitated calcium carbonate, 37 parts of cationic starch, 2.3 parts of odium stearate,
0.04 part of Sodium Polyacrylate, 2.4 parts of bentonite, 0.6 part of chitosan, 1.1 parts of PEO dispersants and by propylgallate and partially sub-
Sulfuric ester is with weight ratio 1:5 0.5 part of the antioxidants being mixed to prepare, it is standby；
(2) precipitated calcium carbonate is added to the water, the calcium carbonate suspension that concentration is 52% is configured to, in 78 DEG C of water-bath
In heat 18min while stirring, it is standby；
(3) cationic starch is added to the water, is configured to the starch suspension that concentration is 63%, is stirred at a temperature of 84 DEG C
Mix 14 minutes, be then gelatinized 28min at 95 DEG C；
(4) with the starch solution pH value after the NaOH solution regulation gelatinization that concentration is 8% to 10, then adding concentration is
14% sodium stearate solution, 28min is mixed under 88 DEG C, 245r/min, form compound, it is standby；
(5) compound obtained by step (4) is added in the calcium carbonate suspension obtained by step (3), and compound with
The mass ratio of the calcium carbonate suspension is 40:115,14min is stirred at 44 DEG C, then adds Sodium Polyacrylate, bentonite
And chitosan, mixed emulsion is obtained after being well mixed, PEO dispersants and antioxidant is added, is mixed under 82 DEG C, 280r/min
48min is stirred, obtains modified calcium carbonate.
The modified calcium carbonate that above-mentioned early stage is prepared is used for the preparation technology of following body paper.
2nd, a kind of body paper preparation technology by the use of modified calcium carbonate as filler, comprises the following steps：
(1) paper pulp raw material is put into after soaking 2.6h in 94 DEG C of water, pulls out and be put into progress beating, beating degree in pulper
For 47 ° of SR, the paper pulp after beating is obtained, it is standby；
(2) using in the paper pulp after adding step (1) beating as the modified calcium carbonate of filler, mixed after stirring
Slurry, wherein, the percentage for the pulp quality that the modified calcium carbonate is accounted for after beating is 17%；
(3) mixed slurry that step (2) obtains is diluted with water to 6% concentration, adds relative mixed slurry quality
2.2% silane coupler, the AKD sizing agents of relative mixed slurry quality 1.2% and the relative phosphoric acid of mixed slurry quality 1.5%
Trimethyl curing agent, 42min is mixed under 63 DEG C, 175r/min, obtains paper making pulp；
(4) paper making pulp for obtaining step (3) is added in paper machine, and progress body paper, which is made, to be copied, and is dried, is obtained after squeezing
The body paper.
Applicant prepares the technique of body paper to the present invention and existing process has carried out contrast test, and test situation is as follows：
Comparative example 1：Technique according to embodiment 5 prepares body paper, except that, market is used in preparation process
Upper common pearl filler.
Detection experiment：Performance test is carried out to body paper made from above-described embodiment 1-5 and comparative example 1, concrete outcome is seen below
Table 1：
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 | |
| Glossiness (%) | 75.4 | 74.2 | 75.1 | 73.1 | 73.5 | 72.5 |
| Whiteness (ISO, %) | 92.8 | 90.9 | 91.2 | 91.3 | 91.2 | 88.3 |
| Opacity (%) | 88 | 87 | 90 | 89 | 91 | 85 |
| Smoothness (s) | 42 | 43 | 43 | 43 | 44 | 35 |
| Bulk (cm3/g) | 1.41 | 1.43 | 1.44 | 1.32 | 1.41 | 1.16 |
| Retention (%) | 94 | 95 | 95 | 96 | 95 | 79 |
| Toughness/MPa | 105 | 106 | 103 | 102 | 104 | 76 |
| Tensile strength/MPa | 112 | 113 | 110 | 112 | 113 | 82 |
| Folding strength/time | 91 | 89 | 92 | 81 | 92 | 55 |
| Sheet resistance/Ω | 7.2x107 | 7.5x107 | 6.7x107 | 7.2x107 | 6.6x107 | 8.3x109 |
| Bulk cm3/g | 5.78 | 5.82 | 5.71 | 5.80 | 5.71 | 4.12 |
As can be seen from Table 1, body paper various aspects of performance is superior to made from comparative example 1 made from 1-5 of the embodiment of the present invention
Body paper.Compared with the commodity calcium carbonate of comparative example 1 is filled with papermaking, embodiment 1-5 body paper whiteness reaches more than 90.9%, impermeable
Lightness improves 2-6%, and the retention of filler improves more than 15%, and toughness improves 26-30MPa, and tensile strength improves 28-
31MPa, folding strength improve 26-37 times, and bulk improves 1.59-1.7cm3/ g or so, sheet resistance also decreases.Say
The bright embodiment of the present invention is used by modified calcium carbonate as inorganic filler, solves body paper impact and antistatic property etc.
The problem of aspect.A certain proportion of modified calcium carbonate is added in paper pulp, lubricity, the water resistance of calcium carbonate can be given full play to
With the characteristic of wearability, the heat endurance and toughness of body paper are improved.In addition, taking cost into account modified calcium carbonate is added in paper pulp
Necessarily bring the reduction of body paper cost.
Described above is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair
Bright patent claim, the equal change completed or modification change under the technical spirit suggested by all present invention, all should belong to
Cover the scope of the claims in the present invention.
Claims (9)
1. a kind of body paper preparation technology by the use of modified calcium carbonate as filler, it is characterised in that comprise the following steps：
(1) paper pulp raw material is put into after soaking 1.5~3h in 90~95 DEG C of water, pulls out and be put into progress beating in pulper, obtain
Paper pulp after to beating, it is standby；
(2) using in the paper pulp after adding step (1) beating as the modified calcium carbonate of filler, mixing slurry is obtained after stirring
Material；
(3) after the mixed slurry that step (2) obtains is diluted with water, the idol of relative mixed slurry quality 0.5~2.5% is added
Join agent, the sizing agent of relative mixed slurry quality 0.2~1.5% and the relative curing agent of mixed slurry quality 0.3~1.8%,
55~65 DEG C, 30~45min is mixed under 150~180r/min, obtain paper making pulp；
(4) paper making pulp for obtaining step (3) is added in paper machine, and progress body paper, which is made, to be copied, and is dried after squeezing, is obtained described
Body paper.
A kind of 2. body paper preparation technology by the use of modified calcium carbonate as filler according to claim 1, it is characterised in that
The modified calcium carbonate is prepared in accordance with the following methods：
(1) the following raw material is weighed by weight：105~115 parts of precipitated calcium carbonate, 32~38 parts of cationic starch, odium stearate
1.5~2.5 parts, 0.02~0.04 part of Sodium Polyacrylate, 1.5~2.5 parts of bentonite, 0.2~0.7 part of chitosan, dispersant 0.7
~1.2 parts and 0.3~0.6 part of antioxidant, it is standby；
(2) precipitated calcium carbonate is added to the water, the calcium carbonate suspension that concentration is 40~55% is configured to, at 70~80 DEG C
15~20min is heated in water-bath while stirring, it is standby；
(3) cationic starch is added to the water, the starch suspension that concentration is 50-65% is configured to, in 80~85 DEG C of temperature
Lower stirring 10~15 minutes, is then gelatinized 20~30min at 92~95 DEG C；
(4) with the starch solution pH value after the NaOH solution regulation gelatinization that concentration is 5~8% to 8~10, then adding concentration is
10~15% sodium stearate solution, 20~30min is mixed under 80~90 DEG C, 200~250r/min, formed compound
Thing, it is standby；
(5) compound obtained by step (4) is added in the calcium carbonate suspension obtained by step (3), stirred at 40~45 DEG C
10~15min is mixed, then adds Sodium Polyacrylate, bentonite and chitosan, mixed emulsion is obtained after being well mixed, adds scattered
Agent and antioxidant, 40~50min is mixed under 75~85 DEG C, 250~300r/min, obtains modified calcium carbonate.
A kind of 3. body paper preparation technology by the use of modified calcium carbonate as filler according to claim 1, it is characterised in that
The coupling agent is silane coupler, and the sizing agent is AKD sizing agents, and the curing agent is trimethyl phosphate curing agent.
A kind of 4. body paper preparation technology by the use of modified calcium carbonate as filler according to claim 2, it is characterised in that
The dispersant is PEO dispersants.
A kind of 5. body paper preparation technology by the use of modified calcium carbonate as filler according to claim 1, it is characterised in that
Beating degree is 40~48 ° of SR in the step (1).
A kind of 6. body paper preparation technology by the use of modified calcium carbonate as filler according to claim 1, it is characterised in that
The percentage for the pulp quality that modified calcium carbonate described in the step (2) is accounted for after beating is 12~18%.
A kind of 7. body paper preparation technology by the use of modified calcium carbonate as filler according to claim 1, it is characterised in that
In the step (3), the mixed slurry obtained to step (2) is diluted with water to 4.5~6.5% concentration.
A kind of 8. body paper preparation technology by the use of modified calcium carbonate as filler according to claim 2, it is characterised in that
The antioxidant is by propylgallate and inclined sulfite with weight ratio 1:2~5 are mixed to prepare.
A kind of 9. body paper preparation technology by the use of modified calcium carbonate as filler according to claim 2, it is characterised in that
The mass ratio of the compound and the calcium carbonate suspension is 40:100~120.
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| Application Number | Priority Date | Filing Date | Title |
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| CN111302703A (en) * | 2020-03-30 | 2020-06-19 | 山东金泰恒盛新材料科技有限公司 | Stone synthetic paper with good printing adaptability |
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Application publication date: 20180202 |