CN104611991B - A kind of drying strengthening agent and its preparation method and application for enhancing paper pull - Google Patents
A kind of drying strengthening agent and its preparation method and application for enhancing paper pull Download PDFInfo
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- CN104611991B CN104611991B CN201410713139.0A CN201410713139A CN104611991B CN 104611991 B CN104611991 B CN 104611991B CN 201410713139 A CN201410713139 A CN 201410713139A CN 104611991 B CN104611991 B CN 104611991B
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- paper pull
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Abstract
The invention discloses a kind of preparation methods of paper pull drying strengthening agent comprising water, emulsifying dispersant and cellulose are mixed into cellulose emulsion by step S1；Cellulose emulsion is impregnated 2 hours after mixing evenly, then is warming up to 45-55 degrees Celsius by step S2, and adding initiator and adjusting solution pH value is 7-8；Aqueous solutions of polymers is added in step S3, reacts 3-5 hours, cooling, and adding PH regulator adjustment solution pH value is 6-8；Step S4 is added viscosity stabiliser, stirs evenly, and measuring degree of substitution is 0.03-0.06, then collects solid product therein, which is paper pull drying strengthening agent obtained.Present invention process is simple, and process for using is extremely short, without harmful substances such as formaldehyde, benzene, will not generate harmful side product, not pollute the environment.Product viscosity produced by the present invention is stablized, and can effectively improve paper pull, and when use is soaked in water dilution, is directly appended to use in paper pulp, has the characteristics that easy to use, turnover rate is low.
Description
Technical field
The invention belongs to the function additives in pulping and papermaking processes, and in particular to a kind of for enhancing the dry strong of paper pull
Agent and its preparation method and application.
Background technique
A large amount of uses of the pulp and paper industry with secondary stock raw material and high yield pulp1 slurry, the internal bond strength change of paper
Difference, pulling force reduce, and occur disconnected paper in the process of making so as to cause paper mill.Existing solution is to increase primary long fiber pulp
Expect dosage, or addition cationic starch and polyacrylamide analog assistant, but the former needs a large amount of wood raw materials；And the latter flows
It loses greatly, contaminated wastewater is serious.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the object of the present invention is to provide one kind to draw for enhancing paper
Drying strengthening agent of power and its preparation method and application, the Study of Paper-Strengthening Agent Based can enhance the internal bond strength of paper, utilize polymer
Effect improve paper fibre intensity, the turnover rate of drying strengthening agent is low, pollution when reducing wastewater treatment to environment.
To achieve the above object, a kind of the technical solution adopted by the present invention are as follows: preparation method packet of paper pull drying strengthening agent
Include following steps:
Water, emulsifying dispersant and cellulose are mixed into cellulose emulsion by step S1；
Cellulose emulsion is impregnated 2 hours after mixing evenly, then is warming up to 45-55 degrees Celsius by step S2, is added and is drawn
Sending out agent and adjusting solution pH value is 7-8；
Aqueous solutions of polymers is added in step S3, reacts 3-5 hours, cooling, adds PH regulator adjustment solution pH value and is
6-8；
Step S4 is added viscosity stabiliser, stirs evenly, and measuring degree of substitution is 0.03-0.06, then collects therein solid
Body product, the solid product are paper pull drying strengthening agent obtained.
Preferred technical solution, in the step S1 in cellulose emulsion each component and each component mass percent
Are as follows:
Cellulose 15-25%；
Emulsifying dispersant 0.2-0.4%；
Surplus is water.
Further preferred technical solution, the cellulose are that the carboxymethyl of cellulose rolls into a ball substitution product.
Technical solution still more preferably, the emulsifying dispersant are dodecyl trimethyl ammonium chloride, cetyl
One of trimethyl ammonium chloride or octadecyltrimethylammonium chloride.
The substituted cellulose is to extract to be made from timber or cotton.
Initiator is one of sodium hydroxide, potassium hydroxide or ammonium hydroxide in the step S2.
Aqueous solutions of polymers is 40% dimethyl diallyl ammonium chloride of content/acrylamide copolymer in the step S3.
The mass ratio of 40% dimethyl diallyl ammonium chloride/acrylamide copolymer and cellulose is 8-15:100.
The PH regulator being added in the step S3 is one of piece alkali, soda ash, hydrochloric acid, sulfuric acid or glacial acetic acid or appoints
The combination of two kinds of meaning.
The step S4 medium viscosity stabilizer is succinic anhydride or five sodium, and the mass ratio of the viscosity stabiliser and cellulose is
1-2:100。
The invention has the benefit that using the polymer of cellulose scion grafting positive charge in lotion, by by it to paper pulp
Addition in raw material allows itself and negatively charged fiber to stablize absorption, to enhance the internal bond strength of page, and because of polymer
Effect improve fibre strength, while avoiding the loss of drying strengthening agent, reduce the difficulty to wastewater treatment.
Meanwhile present invention process is simple, process for using is extremely short, without harmful substances such as formaldehyde, benzene, will not generate harmful pair
Product does not pollute the environment.
In addition, product viscosity produced by the present invention is stablized, paper pull can be effectively improved, when use, is soaked in water dilution,
It is directly appended to use in paper pulp, has the characteristics that easy to use, turnover rate is low.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, With reference to embodiment, to this
Invention is further described.It should be understood that these descriptions are merely illustrative, and it is not intended to limit the scope of the invention.This
Outside, in the following description, descriptions of well-known structures and technologies are omitted, so as not to unnecessarily obscure the concept of the present invention.
A kind of preparation method of paper pull drying strengthening agent the following steps are included:
Water, emulsifying dispersant and cellulose are mixed into cellulose emulsion by step S1；
Wherein, in cellulose emulsion each component and each component mass percent are as follows: cellulose 15-25%；Emulsion dispersion
Agent 0.2-0.4%；Surplus is water.The cellulose is that the carboxymethyl of cellulose rolls into a ball substitution product, and substituted cellulose is from timber
Or it is extracted in cotton and (the present embodiment is extracted from timber to be made) is made.The emulsifying dispersant is trimethyl chlorine
Changing one of ammonium, hexadecyltrimethylammonium chloride or octadecyltrimethylammonium chloride, (the present embodiment selects dodecyl
Trimethyl ammonium chloride).
Cellulose emulsion is impregnated 2 hours after mixing evenly, then is warming up to 45-55 degrees Celsius by step S2, is added and is drawn
Sending out agent and adjusting solution pH value is 7-8；
Wherein, initiator is one of sodium hydroxide, potassium hydroxide or ammonium hydroxide (the present embodiment selects potassium hydroxide).
Aqueous solutions of polymers is added in step S3, reacts 3-5 hours, cooling, adds PH regulator adjustment solution pH value and is
6-8；
Wherein, aqueous solutions of polymers is 40% dimethyl diallyl ammonium chloride of content/acrylamide copolymer, and 40% 2
The mass ratio of methyl diallyl ammonium chloride/acrylamide copolymer and cellulose is 8-15:100.PH regulator is piece alkali, pure
One of alkali, hydrochloric acid, sulfuric acid or glacial acetic acid or any two kinds of combination (the present embodiment is soda ash).
Step S4 is added viscosity stabiliser, stirs evenly, and measuring degree of substitution is 0.03-0.06, then collects therein solid
Body product, the solid product are paper pull drying strengthening agent obtained.
Wherein, viscosity stabiliser is succinic anhydride or five sodium (the present embodiment selection succinic anhydride), the succinic anhydride viscosity
The mass ratio of stabilizer and cellulose is 1-2:100.
In order to verify the effect of paper pull drying strengthening agent produced by the present invention, paper pull drying strengthening agent produced by the present invention is taken
It impregnates and concentration is made as 10% paper pull drying strengthening agent solution, and carry out following comparative experiments:
A is tested, paper original slurry material is mixed with this paper pull drying strengthening agent solution, wherein paper original slurry material and paper of the present invention
The mass ratio of stretching force drying strengthening agent solution is 100:3.
B is tested, paper original slurry material is mixed with this paper pull drying strengthening agent solution, wherein paper original slurry material and paper of the present invention
The mass ratio of stretching force drying strengthening agent solution is 100:5.
C is tested, paper original slurry material is mixed with this paper pull drying strengthening agent solution, wherein paper original slurry material and paper of the present invention
The mass ratio of stretching force drying strengthening agent solution is 100:10.
Test D, only paper original slurry material.
A, experiment B, experiment C will be tested and test paper made from D, 40 grams are successively carried out on the handsheet machine of the same terms
It after quantitative handsheet, then dries on polisher, is finally successively detected.Testing result is as follows:
As can be seen from the table, under identical condition, by adding product produced by the present invention, paper anti-tensile in paper pulp
Intensity (fracture length) improves significantly, while first-pass retention greatly improves, and COD(chemical oxygen demand chemistry needs
The abbreviation of oxygen amount) it reduces obviously.
It should be understood that above-mentioned specific embodiment of the invention is used only for exemplary illustration or explains of the invention
Principle, but not to limit the present invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.In addition, appended claims purport of the present invention
Covering the whole variations fallen into attached claim scope and boundary or this range and the equivalent form on boundary and is repairing
Change example.
Claims (7)
1. a kind of preparation method of paper pull drying strengthening agent, which comprises the following steps:
Water, emulsifying dispersant and cellulose are mixed into cellulose emulsion by step S1；Each component in the cellulose emulsion
Mass percent are as follows: cellulose 15-25%, emulsifying dispersant 0.2-0.4%, surplus are water；The cellulose is cellulose
Carboxymethyl roll into a ball substitution product, the emulsifying dispersant be dodecyl trimethyl ammonium chloride, hexadecyltrimethylammonium chloride
Or one of octadecyltrimethylammonium chloride；
Cellulose emulsion is impregnated 2 hours after mixing evenly, then is warming up to 45-55 degrees Celsius by step S2, adds initiator
Adjusting solution ph is 7-8；
Aqueous solutions of polymers is added in step S3, reacts 3-5 hours, cooling, and adding pH regulator adjustment solution ph is 6-8；
Step S4 is added viscosity stabiliser, stirs evenly, and measuring degree of substitution is 0.03-0.06, then collects solid therein and produces
Object, the solid product are paper pull drying strengthening agent obtained.
2. a kind of preparation method of paper pull drying strengthening agent according to claim 1, it is characterised in that: the substitution fiber
Element is to extract to be made from timber or cotton.
3. a kind of preparation method of paper pull drying strengthening agent according to claim 1, it is characterised in that: in the step S2
Initiator is one of sodium hydroxide, potassium hydroxide or ammonium hydroxide.
4. a kind of preparation method of paper pull drying strengthening agent according to claim 1, it is characterised in that: in the step S3
Aqueous solutions of polymers is 40% dimethyl diallyl ammonium chloride of content/acrylamide copolymer.
5. a kind of preparation method of paper pull drying strengthening agent according to claim 4, it is characterised in that: 40% diformazan
The mass ratio of base diallyl ammonium chloride/acrylamide copolymer and cellulose is 8-15:100.
6. a kind of preparation method of paper pull drying strengthening agent according to claim 1, it is characterised in that: in the step S3
The pH regulator of addition is one of piece alkali, soda ash, hydrochloric acid, sulfuric acid or glacial acetic acid or any two kinds of combination.
7. a kind of preparation method of paper pull drying strengthening agent according to claim 1, it is characterised in that: in the step S4
Viscosity stabiliser is succinic anhydride or five sodium, and the mass ratio of the viscosity stabiliser and cellulose is 1-2:100.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410713139.0A CN104611991B (en) | 2014-12-02 | 2014-12-02 | A kind of drying strengthening agent and its preparation method and application for enhancing paper pull |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201410713139.0A CN104611991B (en) | 2014-12-02 | 2014-12-02 | A kind of drying strengthening agent and its preparation method and application for enhancing paper pull |
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| CN104611991A CN104611991A (en) | 2015-05-13 |
| CN104611991B true CN104611991B (en) | 2019-01-04 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5824190A (en) * | 1995-08-25 | 1998-10-20 | Cytec Technology Corp. | Methods and agents for improving paper printability and strength |
| CN101225621A (en) * | 2008-02-20 | 2008-07-23 | 福建师范大学 | Multifunctional macromolecule paper making promoter and preparation method thereof |
| EP2239370B1 (en) * | 2009-04-09 | 2012-06-20 | Kompetenzzentrum Holz GmbH | Dry and wet strength improvement of paper products with cationic tannin |
| CN103408700A (en) * | 2013-07-09 | 2013-11-27 | 上海东升新材料有限公司 | Preparation method of amphoteric dry strength agent |
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2014
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