Preparation method of high-adsorption porous retention aid for papermaking

A retention aid and high adsorption technology, applied in the field of papermaking, can solve the problems of poor adsorption of pulp fibers and achieve the effects of promoting compatibility, increasing specific surface area, and improving mechanical properties

Inactive Publication Date: 2020-05-12
王丹丹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a preparation method of a high-adsorption porous paper-making retention aid in view of the defect that the current high-adsorption porous paper-making retention aid has poor adsorption to pulp fibers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] Weigh 24g of grapefruit peel and put it into a beaker, rinse the grapefruit peel with deionized water for 3 times, put the rinsed grapefruit peel in an oven, dry at 70°C for 6 minutes, take it out and grind it for 15 minutes to obtain Grapefruit peel granules, then mix grapefruit peel granules and 21% sodium hydroxide solution with a mass fraction of 16min according to the mass ratio of 1:4 and stir for 16 minutes, take out suction filtration, remove the filtrate, obtain filter residue, and dry to obtain modified pomelo peel granules ;According to the mass ratio of 1:7, the flax fiber and the sodium hydroxide solution with a mass fraction of 27% were mixed and soaked for 1 hour to obtain soaked flax fiber, and then the silane coupling agent KH-570 and sodium bisulfite were mixed and soaked in a mass ratio of 3 : 1 mixed and placed in a four-necked flask equipped with a stirrer, a thermometer and a condenser, stirred for 5 minutes, then added to the four-necked flask afte...

example 2

[0023]Weigh 26g of grapefruit peel and put it into a beaker, rinse the grapefruit peel with deionized water 4 times, then put the rinsed grapefruit peel in an oven, dry it at 72°C for 7 minutes, take it out and grind it for 18 minutes to get Grapefruit peel granules, then mix the grapefruit rind granules and 21% sodium hydroxide solution with a mass fraction of 1:4 and stir for 18 minutes, then take out the suction and filter, remove the filtrate, obtain the filter residue, and dry it to obtain the modified grapefruit rind granules ;According to the mass ratio of 1:7, the flax fiber and the sodium hydroxide solution with a mass fraction of 27% were mixed and soaked for 2 hours to obtain the soaked flax fiber, and then the silane coupling agent KH-570 and sodium bisulfite were mixed and soaked in a mass ratio of 3 : 1 mixed and placed in a four-necked flask equipped with a stirrer, a thermometer and a condenser, stirred for 6 minutes, then added to the four-necked flask after st...

example 3

[0025] Weigh 27g of grapefruit peel and put it into a beaker, rinse the grapefruit peel with deionized water for 5 times, then put the rinsed grapefruit peel in an oven, dry at a temperature of 75°C for 8 minutes, take it out and grind it for 21 minutes to obtain Grapefruit peel granules, then mix grapefruit peel granules and 21% sodium hydroxide solution with a mass fraction of 21% according to the mass ratio of 1:4, mix and stir for 20 minutes, take out suction filtration, remove the filtrate, obtain filter residue, and dry to obtain modified grapefruit peel granules ;According to the mass ratio of 1:7, the flax fiber and the sodium hydroxide solution with a mass fraction of 27% were mixed and soaked for 3 hours to obtain the soaked flax fiber, and then the silane coupling agent KH-570 and sodium bisulfite were mixed and soaked at a mass ratio of 3 : 1 mixed and placed in a four-necked flask equipped with a stirrer, a thermometer and a condenser, stirred for 7 minutes, then a...

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PUM

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Abstract

The invention relates to the technical field of papermaking, in particular to a preparation method of a high-adsorption porous retention aid for papermaking. According to the invention, the silica solis modified by the peach gum with viscosity, and modified silica sol with high adsorption activity and viscosity is utilized; after the fermentation reaction, a large quantity of hydroxyl and amino matrixes are exposed, wherein the hydroxyl and amino can be fully close to fibers in paper pulp, so that the retention aid shows excellent film-forming capability and has enough bonding strength on fibers, and bridges can be constructed among the fibers. There are a plurality of positive charge centers and hydroxyl groups on the molecular chains among the fibers, so that it is convenient to form electrostatic bonding and hydrogen bonds with the fibers; and thereby, the invention further improves the adsorbability of the retention aid for papermaking, so that the product has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a preparation method of a high-adsorption porous papermaking retention aid. Background technique [0002] During the papermaking process, there will be a lot of fine fibers in the slurry, the retention rate of the fine fibers is low, and they will be wasted through white water, and the fine fibers will accumulate at the bottom of the filter screen, affecting the water filtration function of the paper sheet and affecting the quality of the paper. Therefore, in the process of papermaking, retention aids will be added to the wire part to increase the retention rate of fine fibers and improve the dehydration performance of paper sheets. [0003] Retention aid, as a kind of chemical for retaining fibers and fines in the paper machine wire, is one of the important raw materials in the paper industry. It can reduce the loss of fine fibers in pulp and reduce the consumption of raw ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/02D21H17/25D21H17/69D21H17/04D21H17/07D21H21/10
CPCD21H17/02D21H17/04D21H17/07D21H17/25D21H17/69D21H21/10
Inventor 王丹丹
Owner 王丹丹
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