CN112095362B - Preparation method of composite aluminum salt sizing promoter - Google Patents
Preparation method of composite aluminum salt sizing promoter Download PDFInfo
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- CN112095362B CN112095362B CN202010978696.0A CN202010978696A CN112095362B CN 112095362 B CN112095362 B CN 112095362B CN 202010978696 A CN202010978696 A CN 202010978696A CN 112095362 B CN112095362 B CN 112095362B
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- aluminum salt
- sizing
- auxiliary agent
- composite aluminum
- accelerator
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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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/64—Inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/36—Aluminium phosphates
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
-
- 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
- D21H21/16—Sizing or water-repelling agents
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Abstract
The invention belongs to the technical field of sizing agents, and particularly relates to a preparation method of a composite aluminum salt sizing accelerator. Adding the alumina sol and water into a reaction kettle, adding phosphoric acid under the stirring condition, and heating to 105-115 ℃ for reaction; adding polyacrylamide into a reaction kettle, uniformly stirring to prepare an auxiliary agent, and then compounding with an aluminum sulfate solution to prepare a composite aluminum salt sizing accelerator; wherein, the aluminum sulfate solution accounts for 70-85% and the auxiliary agent accounts for 15-30% by mass fraction. The aluminum sulfate and the auxiliary agent are compounded, so that the sizing effect is not influenced, and the Al is improved3+The hydrolysis rate of ions increases Al3+The bonding strength with the rosin size reduces the edge seepage value of the paper.
Description
Technical Field
The invention belongs to the technical field of sizing accelerators, and particularly relates to a preparation method of a composite aluminum salt sizing accelerator.
Background
With the rapid development of the paper-making industry in China, the paper-making chemical industry in China also has an industrial system formed by various forms such as internal investment, joint investment, sole investment and the like. Almost all fine chemical products for papermaking are produced in China, and especially synthetic surface sizing agents with large consumption in the papermaking industry in recent years are produced. At present, synthetic surface sizing agents produced at home and abroad flower throughout, and their types and components are also various, such as styrene maleic anhydride copolymer, acrylic acid-styrene copolymer, AKD series, and the like.
Paper sizing is one of the important methods to significantly increase the added value of paper. The surface sizing is carried out on paper and paperboard, so that the printing adaptability of the paper and paperboard can be improved, the surface strength is increased, a certain resistance to hair and powder falling is realized, the internal combination degree, the folding strength and the IGT napping speed are improved, the air permeability is reduced, the stiffness and smoothness are improved, the grease resistance, the oil resistance or the water resistance of the paper are improved, and the like.
The rosin-based emulsion sizing agent is a composition obtained by emulsifying a rosin-based material in the presence of various emulsifiers and water. The paper obtained using this rosin-type emulsion sizing agent shows good sizing effect due to the emulsion particles fixed to the pulp fibers. Conventionally, as rosin-based materials, so-called reinforced rosins and esterified products thereof, which are obtained by modifying raw materials, such as gum rosin, tall oil rosin, and wood rosin, with an α, β -unsaturated carboxylic acid, such as maleic acid, have been evaluated for their excellent sizing properties.
When the rosin type emulsion sizing agent is used, a sizing accelerator aluminum sulfate is inevitably added, and a proper amount of aluminum sulfate is added into a sizing system in the surface sizing process, so that the rosin type emulsion sizing agent can adsorb and neutralize the organic or inorganic substance and other anion garbage precipitated in the paper layer (more obvious in the actual production process); the pH of the system can also be lowered, thereby enhancing the cationic property of the surface sizing agent; when the pH value is less than 4, a large amount of hydrated aluminum ions appear in the system and form intermediate products with the surface sizing agent and the like, so that the cationic charge of the surface sizing agent molecules is greatly increased, the surface sizing agent molecules are more prone to fixing on the surface of a paper sheet, and the probability of penetration into the paper sheet is reduced. It is because of these effects of aluminum sulfate in the sizing system that it can significantly improve the sizing effect of the surface sizing agent and act to promote sizing.
However, after the aluminum sulfate sizing accelerator is used, the emission of sulfate radical indexes in the generated wastewater exceeds the standard. The main source of sulfate radicals is aluminum sulfate, and industrial wastewater generated in the acid sizing industry of the papermaking industry has the over-standard discharge of sulfate radicals and full salt. Therefore, it is necessary to search for a sizing accelerator that reduces the amount of sulfate and total salt emissions while ensuring the sizing effect.
Disclosure of Invention
The purpose of the invention is: the preparation method of the composite aluminum salt sizing accelerator is simple, and the prepared sizing accelerator has excellent performance.
The preparation method of the composite aluminum salt sizing accelerator comprises the following steps:
(1) adding the alumina sol and water into a reaction kettle, adding phosphoric acid under the stirring condition, and heating to 105-115 ℃ for reaction;
(2) adding polyacrylamide into a reaction kettle, uniformly stirring to prepare an auxiliary agent, and then compounding with an aluminum sulfate solution to prepare a composite aluminum salt sizing accelerator; wherein, the aluminum sulfate solution accounts for 70-85% and the auxiliary agent accounts for 15-30% by mass fraction.
Wherein:
the auxiliary agent comprises the following raw materials in percentage by mass: 18-22% of alumina sol, 8-12% of phosphoric acid, 0.5-1.0% of polyacrylamide and the balance of water.
Preferably, the auxiliary agent comprises the following raw materials in percentage by mass: 20% of alumina sol, 10% of phosphoric acid, 0.5-1.0% of polyacrylamide and the balance of water.
Preferably, the composite aluminum salt sizing accelerator comprises the following components in percentage by mass: the aluminum sulfate solution accounts for 80 percent, and the auxiliary agent accounts for 20 percent.
Reacting for 1.5-2.5h at 105-115 ℃ under the normal pressure condition in the step (1).
The aluminum sol in the step (1) is prepared by a sol-gel method.
Adding phosphoric acid into the reaction kettle at a uniform speed within 1-1.5h in the step (1).
And (3) adding the auxiliary agent into the aluminum sulfate solution for compounding in the step (2).
The molecular formula of the composite aluminum salt sizing accelerator gel prepared by the preparation method is Al2(SO4)3·18H2O-AlPO4When in use, water is added to prepare solution (Al)2(SO4)3·18H2O-AlPO4-nH2O)。
Compared with the prior art, the invention has the following beneficial effects:
(1) the aluminum sulfate and the auxiliary agent are compounded, so that the sizing effect is not influenced, and the Al is improved3+The hydrolysis rate of ions increases Al3+The bonding strength with the rosin size reduces the edge seepage value of the paper.
(2) The composite aluminum salt sizing accelerator prepared by the preparation method reduces the content of sulfate radical and total salt in industrial wastewater discharged in the papermaking industry, so that the wastewater reaches the discharge standard and meets the requirement of environmental protection.
(3) The preparation method of the composite aluminum salt sizing accelerator is simple, reasonable in technological parameters, easy to realize industrial production and excellent in performance.
Drawings
FIG. 1 is a graph of bleed values for finished paper.
Detailed Description
The present invention is further described below with reference to examples.
Example 1
The preparation method of the composite aluminum salt sizing accelerator described in this embodiment 1 comprises the following steps:
(1) adding the alumina sol and water into a reaction kettle, adding phosphoric acid under the stirring condition, and heating to 110 ℃ for reaction;
(2) adding polyacrylamide into a reaction kettle, uniformly stirring to prepare an auxiliary agent, and then compounding with an aluminum sulfate solution to prepare a composite aluminum salt sizing accelerator; wherein, the aluminum sulfate solution accounts for 80 percent and the auxiliary agent accounts for 20 percent by mass fraction.
Wherein:
the auxiliary agent comprises the following raw materials in percentage by mass: 20% of alumina sol, 10% of phosphoric acid, 0.5% of polyacrylamide and the balance of water.
Reacting for 2.0h at 110 ℃ under the normal pressure condition in the step (1).
The aluminum sol in the step (1) is prepared by a sol-gel method.
Adding phosphoric acid into the reaction kettle at a uniform speed within 1h in the step (1).
And (3) adding the auxiliary agent into the aluminum sulfate solution for compounding in the step (2).
Prepared by the preparation method described in example 1The molecular formula of the composite aluminum salt sizing accelerant gel is Al2(SO4)3·18H2O-AlPO4When in use, water is added to prepare solution (Al)2(SO4)3·18H2O-AlPO4-nH2O)。
Example 2
The preparation method of the composite aluminum salt sizing accelerator described in this embodiment 2 comprises the following steps:
(1) adding the alumina sol and water into a reaction kettle, adding phosphoric acid under the stirring condition, and heating to 105 ℃ for reaction;
(2) adding polyacrylamide into a reaction kettle, uniformly stirring to prepare an auxiliary agent, and then compounding with an aluminum sulfate solution to prepare a composite aluminum salt sizing accelerator; wherein, the aluminum sulfate solution accounts for 70 percent and the auxiliary agent accounts for 30 percent by mass fraction.
Wherein:
the auxiliary agent comprises the following raw materials in percentage by mass: 18% of aluminum sol, 12% of phosphoric acid, 1.0% of polyacrylamide and the balance of water.
Reacting for 2.5h at 105 ℃ under the normal pressure condition in the step (1).
The aluminum sol in the step (1) is prepared by a sol-gel method.
Adding the phosphoric acid into the reaction kettle at a uniform speed within 1.5h in the step (1).
And (3) adding the auxiliary agent into the aluminum sulfate solution for compounding in the step (2).
The molecular formula of the composite aluminum salt sizing accelerator gel prepared by the preparation method described in example 2 is Al2(SO4)3·18H2O-AlPO4When in use, water is added to prepare solution (Al)2(SO4)3·18H2O-AlPO4-nH2O)。
Example 3
The preparation method of the composite aluminum salt sizing accelerator described in this embodiment 3 comprises the following steps:
(1) adding the alumina sol and water into a reaction kettle, adding phosphoric acid under the stirring condition, and heating to 115 ℃ for reaction;
(2) adding polyacrylamide into a reaction kettle, uniformly stirring to prepare an auxiliary agent, and then compounding with an aluminum sulfate solution to prepare a composite aluminum salt sizing accelerator; wherein, the aluminum sulfate solution accounts for 85 percent and the auxiliary agent accounts for 15 percent by mass fraction.
Wherein:
the auxiliary agent comprises the following raw materials in percentage by mass: 22% of alumina sol, 8% of phosphoric acid, 0.8% of polyacrylamide and the balance of water.
Reacting for 1.5h at 115 ℃ under the normal pressure condition in the step (1).
The aluminum sol in the step (1) is prepared by a sol-gel method.
Adding the phosphoric acid into the reaction kettle at a uniform speed within 1.2h in the step (1).
And (3) adding the auxiliary agent into the aluminum sulfate solution for compounding in the step (2).
The molecular formula of the composite aluminum salt sizing accelerator gel prepared by the preparation method described in example 3 is Al2(SO4)3·18H2O-AlPO4When in use, water is added to prepare solution (Al)2(SO4)3·18H2O-AlPO4-nH2O)。
Comparative example 1
The sizing accelerator described in comparative example 1 was aluminum sulfate.
The aluminum salt sizing accelerator prepared in examples 1 to 3 and comparative example 1 was applied to the sizing process, and the drainage water of the workshop was sampled to detect the water sample, the conductivity, the total salt content and the sulfate ion content, and the results are as follows:
TABLE 1 sulfate ion content
In comparison, the emission of sulfate radical of the composite aluminum salt sizing accelerator can be reduced by 28.2 to 29.8 percent.
TABLE 2 comparison of conductivity content
| Detecting the index | Example 1 | Example 2 | Example 3 | Comparative example 1 |
| Maximum value/(uS/cm) | 2090 | 2140 | 2197 | 2520 |
| Minimum value (uS/cm) | 1420 | 1443 | 1467 | 1750 |
| Mean value (uS/cm) | 1626 | 1648 | 1674 | 2067.5 |
In comparison, the discharge of the conductivity of the composite aluminum salt sizing accelerant can be reduced by 19.0-21.4%.
TABLE 3 determination of total salt content
| Detecting the index | Example 1 | Example 2 | Example 3 | Comparative example 1 |
| Maximum value/(mg/L) | 2090 | 2157 | 2203 | 2164 |
| Minimum value (mg/L) | 1228 | 1365 | 1408 | 1482 |
| Mean value (mg/L) | 1394.7 | 1423.5 | 1457.3 | 1789 |
Compared with the prior art, the discharge of the full salt content of the composite aluminum salt sizing accelerator can be reduced by 18.6-22.0%.
The performance of the composite aluminum salt sizing accelerator prepared in example 1 is compared with that of the aluminum sulfate sizing accelerator in comparative example 1, the composite aluminum salt sizing accelerator in example 1 is used when paper is brushed on a vehicle at 4-month and 17-month days in 2020, the addition amount of sizing aluminum salt is large because the pH value of the system is quickly adjusted when the paper is brushed on the vehicle, in order to ensure the accuracy of data, one water sample of drainage water in a workshop is taken every 4 hours from 4-month and 18-day early shift until the composite aluminum salt sizing agent is sampled to be used up, the conductivity, the total salt content and the sulfate ion content in the water sample are detected, and the results are shown in table 4, and the graph of the side leakage value is shown in figure 1.
TABLE 4 Water sample test results
As can be seen from comparison, compared with the common aluminum sulfate (comparative example 1), the composite aluminum salt sizing accelerator prepared by the invention has obviously reduced conductivity, total salt content and sulfate ion content in industrial wastewater, and the composite aluminum salt sizing accelerator can achieve the same sizing effect by replacing 100% of the common aluminum sulfate.
Claims (6)
1. A preparation method of a composite aluminum salt sizing accelerator for a rosin sizing agent is characterized by comprising the following steps: the method comprises the following steps:
(1) adding the alumina sol and water into a reaction kettle, adding phosphoric acid under the stirring condition, and heating to 105-115 ℃ for reaction for 1.5-2.5 h;
(2) adding polyacrylamide into a reaction kettle, uniformly stirring to prepare an auxiliary agent, and then compounding with an aluminum sulfate solution to prepare a composite aluminum salt sizing accelerator; wherein, the aluminum sulfate solution accounts for 70-85% and the auxiliary agent accounts for 15-30% by mass fraction;
wherein:
the auxiliary agent comprises the following raw materials in percentage by mass: 18-22% of alumina sol, 8-12% of phosphoric acid, 0.5-1.0% of polyacrylamide and the balance of water;
the molecular formula of the prepared composite aluminum salt sizing accelerant gel is Al2(SO4)3·18H2O- AlPO4。
2. The method of preparing a composite aluminum salt sizing accelerator for rosin-based sizes according to claim 1, wherein: the auxiliary agent comprises the following raw materials in percentage by mass: 20% of alumina sol, 10% of phosphoric acid, 0.5-1.0% of polyacrylamide and the balance of water.
3. The method of preparing a composite aluminum salt sizing accelerator for rosin-based sizes according to claim 1, wherein: the composite aluminum salt sizing accelerator comprises the following components in percentage by mass: the aluminum sulfate solution accounts for 80 percent, and the auxiliary agent accounts for 20 percent.
4. The method of preparing a composite aluminum salt sizing accelerator for rosin-based sizes according to claim 1, wherein: the aluminum sol in the step (1) is prepared by a sol-gel method.
5. The method of preparing a composite aluminum salt sizing accelerator for rosin-based sizes according to claim 1, wherein: in the step (1), phosphoric acid is added into the reaction kettle at a uniform speed within 1-1.5 h.
6. The method of preparing a composite aluminum salt sizing accelerator for rosin-based sizes according to claim 1, wherein: and (3) adding the auxiliary agent into the aluminum sulfate solution for compounding in the step (2).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4103169A1 (en) * | 1991-02-02 | 1992-08-13 | Bayer Ag | Improved paper sizing compsn. - contains sizing agent and specified type of aluminium phosphate requiring no process modification |
| CA2328239A1 (en) * | 1998-04-14 | 1999-10-21 | Kemira Kemi Ab | A sizing composition and a method of sizing |
| JP2002371493A (en) * | 2001-06-14 | 2002-12-26 | Taki Chem Co Ltd | Fixing agent for sizing agent and method of making paper |
| CN1851123A (en) * | 2006-05-30 | 2006-10-25 | 朱勇强 | Glueing method for papermaking process |
| CN1990954A (en) * | 2005-12-29 | 2007-07-04 | 天津科技大学 | Aluminum sulfate-acrylic ester-rosin system neutral glue applying technique |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112014008717B1 (en) * | 2011-10-14 | 2021-02-02 | Basf Se | polymer dispersion, process for the preparation of polymer dispersions, and, use of polymer dispersion |
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2020
- 2020-09-17 CN CN202010978696.0A patent/CN112095362B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4103169A1 (en) * | 1991-02-02 | 1992-08-13 | Bayer Ag | Improved paper sizing compsn. - contains sizing agent and specified type of aluminium phosphate requiring no process modification |
| CA2328239A1 (en) * | 1998-04-14 | 1999-10-21 | Kemira Kemi Ab | A sizing composition and a method of sizing |
| JP2002371493A (en) * | 2001-06-14 | 2002-12-26 | Taki Chem Co Ltd | Fixing agent for sizing agent and method of making paper |
| CN1990954A (en) * | 2005-12-29 | 2007-07-04 | 天津科技大学 | Aluminum sulfate-acrylic ester-rosin system neutral glue applying technique |
| CN1851123A (en) * | 2006-05-30 | 2006-10-25 | 朱勇强 | Glueing method for papermaking process |
Non-Patent Citations (2)
| Title |
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| 松香施胶的媒介物质;宋兆萍等;《2009（第八届）中国造纸化学品开发应用国际技术交流会论文集》;20090430;第129页倒数第1段-第133页第2段 * |
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