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Dedicated anionic trash scavenger for papermaking and preparation method thereof

An anionic garbage and capture agent technology, which is applied in the field of papermaking chemical additives, can solve the problems of charge density uniformity and stability, and achieve the effects of enhanced water filtration efficiency, convenient operation, and high positive charge density

Inactive Publication Date: 2013-04-17
天津市奥东化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there is a good improvement in the adsorption balance of cationic garbage, there are still problems in the uniformity and stability of the charge density.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An anionic garbage catcher specially used for papermaking, comprising the following components, by weight (kg): 0.5kg of polyacrylamide, 5kg of acryloyloxyethyltrimethylammonium chloride, 4kg of polyethyleneimine, 4kg of hydroxyethylacrylamide 0.5kg.

[0022] A method for preparing an anionic garbage catcher specially used for papermaking, using polyacrylamide, polyethyleneimine, cationic monomer and crosslinking agent for dissolving emulsification, crosslinking reaction, and forming polyacrylamide-polyethyleneimine crosslinked body polymerization Its performance characteristics are polyacrylamide-polyethyleneimine cross-linked polymer compound with large molecular weight, high positive charge density, good stability, and network structure characteristics. The specific steps are as follows:

[0023] 1) Preparation of cationic polyacrylamide solution:

[0024] In a stirred reactor equipped with a cooling device, add 0.5kg of polyacrylamide by weight into deionized water...

Embodiment 2

[0028] An anionic trash catcher for papermaking, comprising the following components, by weight (kg), polyacrylamide 5kg methacryloxypropyltrimethylammonium chloride 0.2kg and allyltrimethylammonium chloride 0.2kg, polyethyleneimine 0.4kg hydroxyethylacrylamide 5kg.

[0029] A method for preparing an anionic garbage catcher specially used for papermaking, using polyacrylamide, polyethyleneimine, cationic monomer and crosslinking agent for dissolving emulsification, crosslinking reaction, and forming polyacrylamide-polyethyleneimine crosslinked body polymerization Its performance characteristics are polyacrylamide-polyethyleneimine cross-linked polymer compound with large molecular weight, high positive charge density, good stability, and network structure characteristics. The specific steps are as follows:

[0030] 1) Preparation of cationic polyacrylamide solution:

[0031] In a stirred reactor equipped with a cooling device, add 5 kg of polyacrylamide into deionized water b...

Embodiment 3

[0035] An anionic garbage catcher specially used for papermaking, comprising the following components, by weight (kg), polyacrylamide 2kg methacryloxypropyltrimethylammonium chloride 2kg polyethyleneimine 3kg, ethoxymethyl Acrylamide 1kg and methylolacrylamide 1kg.

[0036] A method for preparing an anionic garbage catcher specially used for papermaking, using polyacrylamide, polyethyleneimine, cationic monomer and crosslinking agent for dissolving emulsification, crosslinking reaction, and forming polyacrylamide-polyethyleneimine crosslinked body polymerization Its performance characteristics are polyacrylamide-polyethyleneimine cross-linked polymer compound with large molecular weight, high positive charge density, good stability, and network structure characteristics. The specific steps are as follows:

[0037] 1) Preparation of cationic polyacrylamide solution:

[0038]In a stirred reactor equipped with a cooling device, add 2 kg of polyacrylamide into the deionized aqueo...

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Abstract

The invention relates to a dedicated anionic trash scavenger for papermaking, which is characterized by comprising the following components in part by weight: 0.5-5 parts of polyacrylamide, 0.4-5 parts of cationic monomer, 0.4-4 parts of polyethyleneimine and 0.5-5 parts of cross-linking agent. The preparation method is as follows: dissolving and emulsifying the polyacrylamide, polyethyleneimine, cationic monomer and cross-linking agent and performing the cross-linking reaction to generate a polyacrylamide-polyethyleneimine crosslinked polymer. The invention has the benefits that through the modified polyacrylamide-polyethyleneimine crosslinked polymer, the cationic charge density is increased, and the bi-component crosslinked polymer can be used under the highly-sealed circulating water and very complex anionic trash environment, stably neutralize the anionic trash and directly form electrostatic adsorption together with fiber and filler to enable the fiber and filler to be in retention, and through the bridging effect and fiber combination, the retention rate of fine fiber is improved.

Description

technical field [0001] The invention belongs to papermaking chemical auxiliary agents, in particular to an anionic garbage catcher specially used for papermaking and a preparation method thereof. Background technique [0002] At present, with the change of papermaking raw materials and the shortage of raw pulp, a large number of recycled paper pulps are used, which makes the high-yield pulp of fine particles and hemicellulose and deinked waste paper pulp and a large number of applications of broken paper from paper machines, as well as the maintenance of paper machine systems. The white water is fully closed and recycled, and the accumulation of interfering anion garbage impurities in the wet part of the paper machine will increase the concentration of impurities and the concentration of white water, and the harm to the paper machine will become greater and greater, especially in the papermaking process. The additives are lost into the system, and the accumulation of anion g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/10C08J3/24C08L33/26C08L79/02
Inventor 田成杰李端
Owner 天津市奥东化工有限公司
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