Modified cationic polyacrylamide papermaking retention agent

A polyacrylamide and cationic technology, applied in the field of papermaking additives, can solve problems such as unsatisfactory retention effect, single performance of retention aid, and secondary pollution of the environment, and achieve significant economic and social benefits, good retention effect, Effect of paper quality improvement

Inactive Publication Date: 2016-02-03
仇颖超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention: the performance of the traditional retention aids is relatively single at present, not only the residual harmful substances in the waste water produced in the papermaking process will cause secondary pollution to the environment, but also the cost of pulp is high, and the retention effect is not good. The ideal problem is to provide a modified cationic polyacrylamide paper retention aid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] First get 4kg Avalokitesvara stone and put into pulverizer and be pulverized into 100 mesh particles, then particle is put into container, adds mixed solution in container and submerges particle 2cm, and described mixed solution is that massfraction is 40% hydrochloric acid solution and massfraction is Mix 35% hydrogen peroxide at a volume ratio of 1:1, stir slowly for 1 hour, and set the speed at 100r / min; then, after the above stirring is completed, add 60% sodium hydroxide solution to the above container to adjust the pH 6.5, then put the mixture in the container into a centrifuge for centrifugation, take the centrifuge, set the centrifuge speed to 11000r / min, put the obtained centrifuge into an oven for drying; Use a high-pressure jet to spray the centrifuge into 1mm of the surface of fresh bamboo poles, and then dry the bamboo poles naturally. After the surface of bamboo poles turns yellow, scrape off the surface layer of 3mm from the surface of bamboo poles, put th...

example 2

[0023]First get 5kg Guanyin Stone and put it into a pulverizer to be crushed into 105 mesh particles, then put the particles into a container, add a mixed solution to submerge the particles by 2.5cm in the container, the mixed solution is 40% hydrochloric acid solution and mass fraction Mix 35% hydrogen peroxide at a volume ratio of 1:1, stir slowly for 1.5 hours, and set the speed at 110r / min; then, after the above stirring is completed, add 60% sodium hydroxide solution into the above container Adjust the pH to 6.7, then put the mixture in the container into a centrifuge for centrifugation, take the centrifuge, set the centrifuge speed to 12500r / min, put the obtained centrifuge in an oven to dry; The dried centrifuge is sprayed into 2mm of the surface of fresh bamboo poles with a high-pressure jet, and then the bamboo poles are dried naturally. After the surface of the bamboo poles turns yellow, scrape off the surface layer of 3.5mm on the surface of the bamboo poles, and put...

example 3

[0026] First get 6kg Avalokitesvara stone and put into pulverizer and be pulverized into 110 order particles, then particle is put into container, adds mixed solution to submerge particle 3cm in container, and described mixed solution is that massfraction is 40% hydrochloric acid solution and massfraction is Mix 35% hydrogen peroxide at a volume ratio of 1:1, stir slowly for 2 hours, and set the speed at 120r / min; then, after the above stirring is completed, add 60% sodium hydroxide solution to the above container to adjust the pH 7.0, then put the mixture in the container into a centrifuge for centrifugation, take the centrifuge, set the centrifuge speed to 14000r / min, put the obtained centrifuge into an oven for drying; Use a high-pressure jet to spray it into the 3mm of the surface of the fresh bamboo pole, and then let the bamboo pole dry naturally. After the surface of the bamboo pole turns yellow, scrape off the surface layer of 4mm on the surface of the bamboo pole, put ...

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PUM

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Abstract

The invention discloses a modified cationic polyacrylamide papermaking retention agent, and belongs to the field of papermaking additives. The modified cationic polyacrylamide papermaking retention agent is produced by firstly, conducting preliminary modification on kaolin particles, hydrochloric acid and hydrogen peroxide; secondly, embedding the mixture in the surfaces of bamboo poles for further modification; thirdly, mixing modified kaolin particles with bamboo fiber, 2-methacryloyloxyethyl-trimethyl ammonium chloride and acrylamide monomers, placing the mixture in a reaction kettle, and making the mixture react with gamma-aminopropyltriethoxysilane, N,N-diethyl aniline and other substances. Embodiments prove that the prepared modified cationic polyacrylamide papermaking retention agent is simple in preparation process, good in retention effect, free of damage to the environment, remarkable in economic benefit and social benefit, capable of reducing input of paper pulp raw materials and capable of reducing the production cost by 70% or above.

Description

technical field [0001] The invention discloses a modified cationic polyacrylamide papermaking retention aid, which belongs to the field of papermaking additives. Background technique [0002] Retention aids are one of the essential raw materials in the paper industry because of their chemical properties of retaining fillers and fine fibers. They can reduce the loss of fine fibers in pulp, reduce raw material consumption, and improve paper quality, so they are widely used in the paper industry. [0003] At present, chemical retention aids are liquid, easily soluble in water, and expensive. They are used for residual harmful substances in wastewater generated in the papermaking process and cannot be reused, resulting in large water consumption, high pulp cost and environmental damage. For secondary pollution, investment must be increased for treatment, and the cost of sewage treatment is relatively high, and the treatment effect is not ideal. Especially in the preparation of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/10D21H17/55C08F220/56C08F220/34
Inventor 仇颖超宋国张帆
Owner 仇颖超
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