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Preparation method of paper wet strength agent

A wet strength agent and paper technology, applied in the field of paper wet strength agent preparation, can solve the problems of unfavorable environment, permanent wet strength agent paper is difficult to decompose and recycle, etc., to improve wet strength, retention rate, and adsorption The effect of anionic capacity

Inactive Publication Date: 2018-04-27
常州市宇科不绣钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem to be solved by the present invention: Although the current wet strength agent can maintain the wet strength performance of paper, but the paper added with permanent wet strength agent is difficult to decompose and recycle, which is not conducive to the environment, a paper wet strength agent is provided. Preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] A preparation method of a paper wet strength agent, the preparation method comprising the steps of:

[0025] (1) According to the mass ratio of 1:3~4, mix and dissolve polylysine and 1.0mol / L acetic acid solution, and stir at 100~150r / min until completely dissolved to obtain a solution, in parts by weight Calculate, take 10~12 parts of water, 10~12 parts of solution, 7~8 parts of acrylic acid, 1~2 parts of ammonium sulfate solution, 0.3~0.5 parts of crosslinking agent, and stir at 100~120r / min at 30 Add ammonium persulfate solution dropwise to the solution at a rate of ~40 mL / min, and then add acrylic acid and cross-linking agent to heat after 8-10 minutes of reaction at a temperature of 60-70°C, and at a rate of 150-200r / min Stir for 1~2h to obtain a stirred liquid;

[0026] (2) According to the mass ratio of 10~15:5~6:1~2, mix the stirring liquid, polyacrylamide, and initiator, and react at a temperature of 60~70°C for 1~2h to obtain the reactant. Seal it with plast...

Embodiment 1

[0030] The initiator is ammonium persulfate.

[0031] The crosslinking agent is glutaraldehyde.

[0032] A preparation method of a paper wet strength agent, the preparation method comprising the steps of:

[0033] (1) According to the mass ratio of 1:3, mix and dissolve polylysine and 1.0mol / L acetic acid solution, and stir at 100r / min until completely dissolved to obtain a solution. In parts by weight, take 10 1 part of water, 10 parts of solution, 7 parts of acrylic acid, 1 part of ammonium sulfate solution, 0.3 part of cross-linking agent, and the ammonium persulfate solution was added dropwise to the solution at a rate of 30 mL / min under stirring conditions of 100 r / min. After reacting for 8 minutes, add acrylic acid and crosslinking agent to heat at 60°C, and stir at 150r / min for 1h to obtain a stirred liquid;

[0034] (2) According to the mass ratio of 10:5:1, mix the stirring solution, polyacrylamide and initiator, and react at a temperature of 60°C for 1 hour to obta...

Embodiment 2

[0038] The initiator is ammonium persulfate.

[0039] The crosslinker is N,N'-methylenebisacrylamide.

[0040] A preparation method of a paper wet strength agent, the preparation method comprising the steps of:

[0041] A preparation method of a paper wet strength agent, the preparation method comprising the steps of:

[0042] (1) According to the mass ratio of 1:3.5, mix and dissolve polylysine and 1.0mol / L acetic acid solution, and stir at 120r / min until completely dissolved to obtain a solution. In parts by weight, take 11 1 part of water, 11 parts of solution, 7 parts of acrylic acid, 1 part of ammonium sulfate solution, 0.4 part of cross-linking agent, and the ammonium persulfate solution was added dropwise to the solution at a rate of 35mL / min under the stirring condition of 110r / min. After reacting for 9 minutes, add acrylic acid and crosslinking agent to heat at 65°C, and stir at 180r / min for 1.5h to obtain a stirring liquid;

[0043] (2) According to the mass ratio...

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Abstract

The invention belongs to the field of papermaking chemicals, and in particular relates to a preparation method of a paper wet strength agent. In the present invention, polylysine is used as raw material, acrylic acid is used as grafting monomer, a polylysine hydrogel is prepared through a crosslinking agent, and then reacted with polyacrylamide to improve the ability to absorb anions, and the paper fiber tape Negative charge, thereby improving its retention rate, while using potassium persulfate as a proton source, under the condition of heating, potassium persulfate slowly decomposes, providing hydrogen ions for polylysine, reducing the hydrophilic property of polylysine, In order to improve the water resistance of paper, in addition, through the alkylation reaction of epichlorohydrin, the introduction of epoxy crosslinking groups increases the crosslinking activity of molecular segments, and further enhances the affinity between polymers and fibers , the cross-linked structure of its molecular chains effectively limits the activities between fibers and fibers, prevents swelling and water absorption of fibers, and thus improves the wet strength of paper.

Description

technical field [0001] The invention belongs to the field of papermaking chemicals, and in particular relates to a preparation method of a paper wet strength agent. Background technique [0002] At present, with the improvement of people's living standards, people's demand for household paper has begun to show a multi-functional trend. For example, some types of paper require high wet strength, and they also hope that they can be quickly dissolved and printed after use. It can be quickly and easily broken up or dissolved when it is recycled as broken paper. The wet strength of paper refers to the strength of a paper sheet when exposed to water or in a humid environment. Many paper products require high wet strength, and the addition of wet strength agents can improve the wet strength of paper under conditions such as wetting. [0003] But at present, there is no paper product that can have wet strength performance and easy decomposition performance at the same time. The r...

Claims

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Application Information

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IPC IPC(8): D21H21/20C08J3/075C08F283/04C08F220/06C08G81/02
CPCD21H21/20C08F220/06C08F283/04C08G81/028C08J3/075C08J2377/04
Inventor 郑守生乔舍林凡
Owner 常州市宇科不绣钢有限公司