CN113186752A - Boron crosslinked organic compound gel emulsifier - Google Patents
Boron crosslinked organic compound gel emulsifier Download PDFInfo
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- CN113186752A CN113186752A CN202110526278.2A CN202110526278A CN113186752A CN 113186752 A CN113186752 A CN 113186752A CN 202110526278 A CN202110526278 A CN 202110526278A CN 113186752 A CN113186752 A CN 113186752A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—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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Abstract
The invention provides a boron crosslinked organic compound gel emulsifier, which comprises the following steps: the polyhydroxy organic compound is dispersed in water to prepare aqueous solution, a certain amount of boron crosslinking agent is added to obtain boron crosslinking complex gel, and the prepared complex gel can be used as an emulsifier and a stabilizer to prepare papermaking sizing agent emulsion. The papermaking sizing agent emulsion has the advantages of less emulsifier consumption, no need of adding a surfactant and good emulsion sizing effect.
Description
Technical Field
The invention belongs to the field of preparation of papermaking sizing agent emulsion, and particularly relates to a boron crosslinked organic compound gel emulsifying agent which can be used for preparing papermaking sizing agent emulsion.
Background
The plant fiber for papermaking mainly comprises cellulose, hemicellulose and lignin, the surface of the fiber contains a large number of hydrophilic groups, the paper without the sizing agent has strong water absorption and is not suitable for most paper application environments, so the paper-making sizing agent is required to be added in most paper production processes to improve the water resistance of the paper. At present, the most common papermaking sizing agents are Alkyl Ketene Dimer (AKD) and Alkenyl Succinic Anhydride (ASA), the molecular structure of the sizing agent contains hydrophobic groups, the sizing agent is an oily liquid at melting or normal temperature and cannot be mixed with water, and the sizing agent needs to be prepared into an emulsion state in advance before papermaking production application. At present, commercial sizing agent emulsion is generally emulsified by adopting a surfactant and a large amount of starch, and the using amount of the starch is generally more than 25 percent of that of the sizing agent. At the same time, surfactants can reduce sizing efficiency, and can also cause foaming problems and even paper defects to papermaking systems. The development of an efficient papermaking sizing agent emulsifying system, the reduction of the dosage of the surfactant or even the elimination of the surfactant is beneficial to improving the papermaking sizing efficiency, and the development of the efficient papermaking sizing agent emulsifying system is suitable for the production requirements of papermaking enterprises and the requirements of green industrial production.
The emulsion prepared by using the particles and the microgel particles as the emulsifier has the advantages of less emulsifier dosage, good emulsion stability, avoidance of the use of a surfactant and the like, and has attracted extensive attention in the fields of papermaking, food and the like in recent years. The boron cross-linked polyhydroxy compound has low gel strength, is easy to damage under the mechanical action, has reversibility, is widely researched and applied in the field of preparation of self-healing hydrogel, but is not reported in the field of preparation of papermaking emulsion.
Disclosure of Invention
In the invention, the boron crosslinking agent and the polyhydroxy organic compound can act in advance to form gel, the broken gel particles are adsorbed on an oil-water interface under the action of mechanical stirring, and after the action of external force is eliminated, the broken gel self-heals to form a gel interface film so as to improve the stability of emulsion and the oil-water barrier effect. The boron crosslinking agent and the polyhydroxy compound can also be added into the emulsion preparation process at the same time, and the gel interface film is formed in situ to achieve the effects of emulsion stability and oil-water separation. Because the complex has weak gel strength, when the emulsion is applied to papermaking, a gel interface film is broken under the mechanical action, the sizing agent in emulsion drops is released, and the sizing degree of paper is improved.
The invention aims to prepare a papermaking sizing agent emulsion by using a boron crosslinked polyhydroxy organic compound gel as an emulsifier and a stabilizer.
The invention is realized by the following technical scheme:
(1) preparation of boron crosslinked gel: the polyhydroxy organic compound is dissolved in water to form aqueous solution, and boron crosslinking agent can be added into the aqueous solution of the polyhydroxy organic compound to prepare boron crosslinked gel in advance for emulsion preparation; the aqueous solution of polyhydroxy organic compound and the boron crosslinking agent can also be added simultaneously in the preparation process of the emulsion.
(2) Preparing a papermaking sizing agent emulsion: the prepared boron crosslinking gel (or the boron crosslinking agent and the polyhydroxy organic compound aqueous solution) is mixed with the liquid oil phase of the papermaking sizing agent, and is stirred for a certain time under the mechanical action, so that the stable O/W type papermaking emulsion is obtained. In the preparation of the emulsion, various small amounts of auxiliary additives required by the preparation of the conventional general papermaking sizing agent emulsion, such as a stabilizer, a viscosity regulator, a bactericide, a sizing accelerator and the like, can be optionally added or not added for the purposes of further improving the stability, viscosity regulation, sterilization, sizing effect improvement and the like of the emulsion.
The boron crosslinking agent of the present invention is characterized by forming B (OH) in an aqueous solution4 -Can form complex gel with polyhydroxy compound, including borax, boric acid, etc.
The polyhydroxy compound comprises natural compound and chemical synthesis polyhydroxy compound, and is characterized in that the molecular structure contains polyhydroxy, which can form complex gel by crosslinking with boron, the compound comprises natural compound polysaccharide and modified substance thereof, and synthetic polyhydroxy organic compound, such as guar gum, starch, cyclodextrin, Arabic gum, sodium alginate, carrageenan, xanthan gum, agarose, polyvinyl alcohol, and the like.
The polyhydroxy compounds involved in the invention are all commercial products, are easily prepared into aqueous solutions, and can react with B (OH)4 - Combine to form a boronic ester. The mass ratio of the polyhydroxy compound to the boron crosslinking agent is 1: 0.2-8, and the preferable ratio is 1: 0.5-5.
The boron crosslinking polyhydroxy compound gel related by the invention can be a complex gel formed by a boron crosslinking agent and one polyhydroxy compound, and also can be a complex gel formed by two or more polyhydroxy compounds and the boron crosslinking agent.
The papermaking sizing agent comprises Alkenyl Succinic Anhydride (ASA) and Alkyl Ketene Dimer (AKD). Commercially available papermaking sizing agents ASA are liquid at room temperature. The commercially available AKD is solid at room temperature, and its melting point is generally 45-55 ℃. In order to ensure the content of effective components of the papermaking sizing agent emulsion, the mass ratio of the papermaking sizing agent to the water phase is 1: 1-19, and the preferable ratio is 1: 4-9.
The mass ratio of the boron crosslinked gel to the papermaking sizing agent is 1: 6.3-250, and the more preferable ratio is 1: 20-83.
In the preparation scheme of the emulsion, the mechanical shearing action of the mixed boron complex and the oil phase of the papermaking sizing agent can be provided by any stirring or mechanical shearing emulsification equipment, so that enough energy is provided for dispersing the papermaking sizing agent into oil drops in water.
When the papermaking sizing agent is emulsified, the temperature range of the ASA emulsifying oil water is 10-35 ℃, and more preferably 15-25 ℃. The temperature range of the AKD oil-water phase is 55-85 ℃, and more preferably 65-75 ℃.
Has the advantages that:
the preparation process of the papermaking sizing agent emulsion does not add a surfactant, the stable sizing agent emulsion can be prepared by using low boron crosslinked gel, and the sizing effect of the emulsion is good.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Example 1
Preparing an emulsion: dissolving 0.05 part of guar gum in 174.9 parts of deionized water, adding 0.05 part of borax to prepare complex gel of polyhydroxy compound and boron crosslinking agent 1:1, mixing with 25 parts of molten AKD, and emulsifying in a water bath at 65 ℃ by using a rotor emulsifying machine to prepare emulsion, wherein the ratio of the gel to the oil is 1: 250. The sizing agent is prepared into uniform milky oil-in-water type stable AKD emulsion with the ratio of 1:7 compared with water.
Internal sizing effect: chemical machine for taking 100 parts of poplarDispersing the mechanical pulp in 9900 parts of water, adding 1.6 parts of AKD emulsion, 0.03 part of CPAM and 0.3 part of bentonite after uniform dispersion, and mixing uniformly to form the paper stock. 200 parts of the paper stock is made into paper with the fixed weight of about 60g/m in a Kaiser paper sheet former2The handsheet of (1) had a sizing degree of 52s as measured by a liquid penetration method (GB/T5405-2002).
Example 2
Preparing an emulsion: 2.5 parts of xanthan gum is dissolved in 156 parts of deionized water, and a xanthan gum aqueous solution is mixed with 1.5 parts of borax and 40 parts of molten AKD, and the mixture is emulsified by an emulsifying machine in a water bath at 55 ℃ to prepare emulsion. The polyhydroxy compound and the boron crosslinking agent form complex gel with the mass ratio of 1:0.6 in situ in the emulsion, and the ratio of the gel to the oil is 1: 10. The sizing agent is prepared into uniform milky oil-in-water type stable AKD emulsion with the ratio of 1:4 compared with water.
Internal sizing effect: 100 parts of bleached hardwood pulp is dispersed in 9900 parts of water, and after uniform dispersion, 1 part of the AKD emulsion, 0.03 part of CPAM and 0.3 part of bentonite are added and mixed uniformly to form the paper stock. 200 parts of the paper stock is made into paper with the fixed weight of about 60g/m in a Kaiser paper sheet former2The handsheet of (1) had a sizing degree of 56s as measured by a liquid penetration method (GB/T5405-2002).
Example 3
Preparing an emulsion: heating 3 parts of starch in 171 parts of deionized water for full gelatinization, adding 1 part of boric acid to prepare complex gel of polyhydroxy compound and boron crosslinking agent in a ratio of 1:0.33, mixing with 25 parts of ASA, and emulsifying by using an emulsifying machine at a constant temperature of 25 ℃ to prepare emulsion, wherein the ratio of the gel to the oil is 1: 6.3. The sizing agent was prepared as a uniform milky oil-in-water stable ASA emulsion with a 1:7 ratio to water.
Internal sizing effect: 100 parts of chemical mechanical pulp is dispersed in 9900 parts of water, after uniform dispersion, 2.4 parts of ASA emulsion, 0.03 part of CPAM and 0.3 part of bentonite are added, and the mixture is mixed uniformly to form the paper stock. 200 parts of the paper stock is made into paper with the fixed weight of about 60g/m in a Kaiser paper sheet former2The handsheet of (1) had a sizing degree of 42s as measured by a liquid penetration method (GB/T5405-2002).
Example 4
Preparing an emulsion: dissolving 2 parts of cyclodextrin in 96 parts of deionized water, adding 2 parts of borax to prepare complex gel of polyhydroxy compound and boron crosslinking agent in a ratio of 1:1, mixing with 100 parts of ASA, and emulsifying by using an ultrasonic emulsifying machine at a constant temperature of 15 ℃ to prepare emulsion, wherein the ratio of the gel to the oil is 1: 25. The sizing agent was prepared as a uniform milky oil-in-water stable ASA emulsion with 1:1 ratio to water.
Internal sizing effect: 100 parts of chemical mechanical pulp is dispersed in 9900 parts of water, after uniform dispersion, 0.6 part of ASA emulsion, 0.03 part of CPAM and 0.3 part of bentonite are added, and the mixture is mixed uniformly to form the paper stock. 200 parts of the paper stock is made into paper with the fixed weight of about 60g/m in a Kaiser paper sheet former2The handsheet of (1) had a sizing degree of 40s as measured by a liquid penetration method (GB/T5405-2002).
Example 5
Preparing an emulsion: dissolving 0.2 part of Arabic gum in 174.7 parts of deionized water, mixing an Arabic gum aqueous solution with 0.1 part of borax and 25 parts of ASA, and emulsifying by using an emulsifying machine at the constant temperature of 35 ℃ to prepare emulsion. The polyhydroxy compound and the boron crosslinking agent form complex gel with the mass ratio of 1:0.5 in situ in the emulsion, and the ratio of the gel to the oil is 1: 83. The sizing agent was prepared as a uniform milky oil-in-water stable ASA emulsion with a 1:7 ratio to water.
Internal sizing effect: 100 parts of softwood pulp is dispersed in 9900 parts of water, after uniform dispersion, 2.4 parts of ASA emulsion, 0.03 part of CPAM and 0.3 part of bentonite are added, and the mixture is uniformly mixed to form a paper stock. 200 parts of the paper stock is made into paper with the fixed weight of about 60g/m in a Kaiser paper sheet former2The handsheet of (1) had a size of 51s as measured by a liquid penetration method (GB/T5405-2002).
Example 6
Preparing an emulsion: 0.2 part of sodium alginate is dissolved in 178.8 parts of deionized water, and the sodium alginate aqueous solution is mixed with 1 part of borax and 20 parts of molten AKD, and the mixture is emulsified by an emulsifying machine in a water bath at 75 ℃ to prepare emulsion. The polyhydroxy compound and the boron crosslinking agent form complex gel with the mass ratio of 1:5 in situ in the emulsion, and the ratio of the gel to the oil is 1: 16.7. The sizing agent is prepared into uniform milky oil-in-water type stable AKD emulsion with the ratio of 1:9 compared with water.
Internal sizing effect: dispersing 100 parts of hardwood pulp in 9900 parts of water, adding 2 parts of the AKD emulsion, 0.03 part of CPAM and 0.3 part of bentonite after uniform dispersion, and mixing uniformly to form the paper stock. 200 parts of the paper stock is made into paper with the fixed weight of about 60g/m in a Kaiser paper sheet former2The handsheet of (1) had a sizing degree of 53s as measured by a liquid penetration method (GB/T5405-2002).
Example 7
Preparing an emulsion: 0.05 part of agarose is dissolved in 174.55 parts of hot deionized water, 0.4 part of borax is added to prepare complex gel of polyhydroxy compound and boron crosslinking agent 1:8, the complex gel is mixed with 25 parts of molten AKD, emulsion is prepared by an emulsifying machine in water bath at 85 ℃, and the ratio of the gel to the oil is 1: 55.6. The sizing agent is prepared into uniform milky oil-in-water type stable AKD emulsion with the ratio of 1:7 compared with water.
Internal sizing effect: 100 parts of softwood pulp is dispersed in 9900 parts of water, and after uniform dispersion, 1.6 parts of AKD emulsion, 0.03 part of CPAM and 0.3 part of bentonite are added and mixed uniformly to form a paper material. 200 parts of the paper stock is made into paper with the fixed weight of about 60g/m in a Kaiser paper sheet former2The handsheet of (1) had a sizing degree of 57s as measured by a liquid penetration method (GB/T5405-2002).
Example 8
Preparing an emulsion: dissolving 1 part of polyvinyl alcohol in 188.8 parts of deionized water, mixing a polyvinyl alcohol aqueous solution with 0.2 part of borax and 10 parts of ASA, and emulsifying at a constant temperature of 10 ℃ by using an ultrasonic emulsifying machine to prepare emulsion. The polyhydroxy compound and the boron crosslinking agent form complex gel with the mass ratio of 1:0.2 in situ in the emulsion, and the ratio of the gel to the oil is 1: 8.3. The sizing agent was prepared as a uniform milky oil-in-water stable ASA emulsion with a 1:19 ratio to water.
Internal sizing effect: dispersing 100 parts of hardwood pulp in 9900 parts of water, adding 6 parts of ASA emulsion, 0.03 part of CPAM and 0.3 part of bentonite after uniform dispersion, and mixing uniformly to form the paper stock. 200 parts of the paper stock is made into paper with the fixed weight of about 60g/m in a Kaiser paper sheet former2The handsheet of (1) had a sizing degree of 34s as measured by a liquid penetration method (GB/T5405-2002).
Example 9
Preparing an emulsion: dissolving 0.1 part of carrageenan in 169.6 parts of hot deionized water, adding 0.3 part of borax to prepare complex gel of polyhydroxy compound and boron crosslinking agent in a ratio of 1:3, mixing with 30 parts of molten AKD, and emulsifying in a water bath at 70 ℃ by using a rotor emulsifying machine to prepare emulsion, wherein the ratio of the gel to the oil is 1: 75. The sizing agent is prepared into a uniform milky oil-in-water stable AKD emulsion with the ratio of 1:5.7 compared with water.
Internal sizing effect: 100 parts of chemical mechanical pulp is dispersed in 9900 parts of water, after uniform dispersion, 1.3 parts of ASA emulsion, 0.03 part of CPAM and 0.3 part of bentonite are added, and the mixture is mixed uniformly to form the paper stock. 200 parts of the paper stock is made into paper with the fixed weight of about 60g/m in a Kaiser paper sheet former2The handsheet of (1) had a sizing degree of 55s as measured by a liquid penetration method (GB/T5405-2002).
Example 10
Preparing an emulsion: dissolving 2 parts of cyclodextrin and 1 part of polyvinyl alcohol in 146 parts of deionized water, adding 1 part of borax to prepare complex gel of polyhydroxy compound and boron crosslinking agent in a ratio of 1:0.3, mixing with 50 parts of ASA, and emulsifying by using a rotor emulsifying machine at a constant temperature of 30 ℃ to prepare emulsion, wherein the ratio of the gel to the oil is 1: 12.5. The sizing agent is prepared into a uniform milky oil-in-water type stable ASA emulsion with the ratio of 1:3 compared with water.
Internal sizing effect: dispersing 100 parts of hardwood pulp in 9900 parts of water, adding 1.2 parts of ASA emulsion, 0.03 part of CPAM and 0.3 part of bentonite after uniform dispersion, and mixing uniformly to form the paper stock. 200 parts of the paper stock is made into paper with the fixed weight of about 60g/m in a Kaiser paper sheet former2The handsheet of (1) had a sizing degree of 41s as measured by a liquid penetration method (GB/T5405-2002).
Example 11
Preparing an emulsion: adding 1 part of starch into 100 parts of deionized water, heating and fully gelatinizing, dissolving 0.1 part of sodium alginate in 78.4 parts of deionized water, mixing, adding 0.5 part of boric acid to prepare complex gel of polyhydroxy compound and boron cross-linking agent in a ratio of 1:0.45, mixing with 20 parts of ASA, and emulsifying at a constant temperature of 20 ℃ by using a rotor emulsifying machine to prepare emulsion, wherein the ratio of the gel to the oil is 1: 12.5. The sizing agent is prepared into a uniform milky oil-in-water type stable ASA emulsion with the ratio of 1:9 to water.
Internal sizing effect: 100 parts of chemical mechanical pulp is dispersed in 9900 parts of water, after uniform dispersion, 3 parts of ASA emulsion, 0.03 part of CPAM and 0.3 part of bentonite are added, and after uniform mixing, paper stock is formed. 200 parts of the paper stock is made into paper with the fixed weight of about 60g/m in a Kaiser paper sheet former2The handsheet of (1) had a sizing degree of 43s as measured by a liquid penetration method (GB/T5405-2002).
Example 12
Preparing an emulsion: dissolving 0.05 part of xanthan gum and 0.05 part of guar gum in 179.8 parts of deionized water, adding 0.1 part of borax to prepare complex gel of polyhydroxy compound and boron crosslinking agent in a ratio of 1:1, mixing with 20 parts of molten AKD, and emulsifying by using an ultrasonic emulsifying machine at the constant temperature of 70 ℃ to prepare emulsion, wherein the ratio of the gel to the oil is 1: 100. The sizing agent is prepared into uniform milky oil-in-water type stable AKD emulsion with the ratio of 1:9 compared with water.
Internal sizing effect: 100 parts of softwood pulp is dispersed in 9900 parts of water, after uniform dispersion, 2 parts of the AKD emulsion, 0.03 part of CPAM and 0.3 part of bentonite are added, and after uniform mixing, paper stock is formed. 200 parts of the paper stock is made into paper with the fixed weight of about 60g/m in a Kaiser paper sheet former2The handsheet of (1) had a sizing degree of 48s as measured by a liquid penetration method (GB/T5405-2002).
Example 13
Preparing an emulsion: respectively dissolving 0.05 part of carrageenan and 0.05 part of agarose in 93.7 parts of hot deionized water, mixing two parts of polyhydroxy compound aqueous solution and 12 parts of molten AKD, adding 0.5 part of borax, and emulsifying at 80 ℃ by using an ultrasonic emulsifying machine to prepare emulsion. The polyhydroxy compound and the boron crosslinking agent form complex gel with the mass ratio of 1:5 in situ in the emulsion, and the ratio of the gel to the oil is 1: 20. The sizing agent is prepared into a uniform milky oil-in-water stable AKD emulsion with the ratio of 1:15.7 compared with water.
Internal sizing effect: 100 parts of chemical mechanical pulp is dispersed in 9900 parts of water, after uniform dispersion, 3.3 parts of the AKD emulsion, 0.03 part of CPAM and 0.3 part of bentonite are added, and the mixture is uniformly mixed to form the paper stock. Forming 200 parts of the paper material on a Kaiser paper sheetThe paper is made into the paper with the fixed quantity of about 60g/m2The handsheet of (1) had a size of 51s as measured by a liquid penetration method (GB/T5405-2002).
Example 14
Preparing an emulsion: dissolving 0.5 part of xanthan gum and 0.5 part of Arabic gum in 168.6 parts of deionized water, adding 0.4 part of borax to prepare complex gel of polyhydroxy compound and boron cross-linking agent in a ratio of 1:0.4, mixing with 30 parts of molten AKD, and emulsifying at a constant temperature of 60 ℃ by using an ultrasonic emulsifying machine to prepare emulsion, wherein the ratio of the gel to the oil is 1: 21.4. The sizing agent is prepared into a uniform milky oil-in-water stable AKD emulsion with the ratio of 1:5.7 compared with water.
Internal sizing effect: 100 parts of chemical mechanical pulp is dispersed in 9900 parts of water, after uniform dispersion, 1.3 parts of AKD emulsion, 0.03 part of CPAM and 0.3 part of bentonite are added, and the mixture is mixed uniformly to form the paper stock. 200 parts of the paper stock is made into paper with the fixed weight of about 60g/m in a Kaiser paper sheet former2The handsheet of (1) had a sizing degree of 45s as measured by a liquid penetration method (GB/T5405-2002).
Claims (10)
1. A boron crosslinked organic compound gel emulsifier is characterized in that the gel is prepared from a polyhydroxy organic compound and a boron crosslinking agent; the boron crosslinking agent can form B (OH) in aqueous solution4 -(ii) a The polyhydroxy organic compound is an organic compound which contains polyhydroxy in a molecular structure and can form complex gel with a boron crosslinking agent.
2. The boron crosslinked organic compound gel emulsifier according to claim 1, wherein the boron crosslinking agent is borax or boric acid.
3. The boron crosslinked organic compound gel emulsifier according to claim 1, wherein the polyhydroxy organic compound is one or more of guar gum, starch, cyclodextrin, gum arabic, sodium alginate, carrageenan, xanthan gum, agarose and polyvinyl alcohol.
4. A method of preparing a papermaking size emulsion using the boron crosslinked organic compound gel emulsifier according to any one of claims 1 to 3, comprising the steps of:
(1) dissolving a polyhydroxy organic compound in water to form an aqueous solution;
(2) preparing a papermaking sizing agent emulsion: the prepared aqueous solution is mixed with the boron crosslinking agent directly to form the liquid oil phase of the papermaking sizing agent, or the boron crosslinking agent is added into the aqueous solution to prepare boron crosslinking gel in advance, then the boron crosslinking gel is mixed with the liquid oil phase of the papermaking sizing agent, and the mixture is stirred under the mechanical action, so that the stable O/W type papermaking emulsion is obtained.
5. The method according to claim 4, wherein the mass ratio of the polyhydroxy organic compound to the boron crosslinking agent is 1: 0.2-8, and more preferably 1: 0.5-5.
6. The method of claim 4 wherein the papermaking sizing agent is an alkenyl succinic anhydride or an alkyl ketene dimer.
7. The method according to claim 4, characterized in that the mass ratio of the papermaking sizing agent to the water phase is 1: 1-19, preferably 1: 4-9.
8. The method of claim 4, wherein the mass ratio of the boron crosslinked gel to the papermaking sizing agent is 1:6.3 to 250, and more preferably 1:20 to 83.
9. The method of claim 6, wherein the temperature of the agitation is: the temperature range of ASA is 10-35 ℃, and more preferably 15-25 ℃; the temperature range of AKD is 55-85 ℃, and more preferably 65-75 ℃.
10. The method of claim 4 wherein the size emulsion is optionally supplemented with minor amounts of various auxiliary aids, stabilizers, viscosity modifiers, bactericides, or sizing accelerators required for conventional papermaking size emulsion preparations.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115287938A (en) * | 2022-08-22 | 2022-11-04 | 齐鲁工业大学 | Food-grade AKD sizing agent emulsion and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104562845A (en) * | 2013-10-11 | 2015-04-29 | 金东纸业（江苏）股份有限公司 | Paper surface sizing agent and method for raising paper permeability resistance |
| CN107447580A (en) * | 2016-05-31 | 2017-12-08 | 齐鲁工业大学 | The emulsifying agent of ASA a kind of and a kind of ASA sizing agent emulsions |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104562845A (en) * | 2013-10-11 | 2015-04-29 | 金东纸业（江苏）股份有限公司 | Paper surface sizing agent and method for raising paper permeability resistance |
| CN107447580A (en) * | 2016-05-31 | 2017-12-08 | 齐鲁工业大学 | The emulsifying agent of ASA a kind of and a kind of ASA sizing agent emulsions |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115287938A (en) * | 2022-08-22 | 2022-11-04 | 齐鲁工业大学 | Food-grade AKD sizing agent emulsion and preparation method thereof |
| CN115287938B (en) * | 2022-08-22 | 2023-04-25 | 齐鲁工业大学 | Food grade AKD sizing agent emulsion and preparation method thereof |
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