A retention aid for papermaking

A retention aid and quality technology, applied in the field of papermaking additives, can solve the problems of loose pulp fiber structure, weak fiber adsorption, poor flatness, etc., to improve the retention rate, increase the number of contact points, and increase the retention rate Effect

Active Publication Date: 2019-05-17
淄博市博山瑞吉特化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a retention aid for papermaking in view of the defects that the existing retention aids do not have a strong adsorption effect on pulp fibers during use, resulting in loose fiber structure and poor flatness of the prepared pulp. agent

Method used

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  • A retention aid for papermaking

Examples

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Effect test

example 1

[0028] Collect the peach gum on the peach tree, put it in an oven, dry it at 70°C for 10 hours, crush it after drying, and pass it through a 80-mesh sieve to obtain peach gum powder. Add the peach gum powder into water at a mass ratio of 1:20, and soak it at room temperature After 8 hours, heat to 90°C, heat and stir for 20 minutes, then filter while it is hot, collect the filtrate, weigh the cotton stalks, cut them into 2cm pieces, put them in an oven, dry them at 105°C to constant weight, and place the dried cotton stalks In a steam heater, heat it to 130°C and keep it warm for 1 hour. After naturally cooling to room temperature, take out the material in the steam heater, add the material in the steam heater to the filtrate according to the mass ratio of 1:3, and add 0.3% of the filtrate mass N-methylolacrylamide, heated to 50°C, stirred and reacted for 4h, cooled to room temperature, filtered, collected filter residue, sprayed and frozen with liquid nitrogen for 30s, then pu...

example 2

[0031]Collect peach gum from peach trees, put it in an oven, dry at 75°C for 11 hours, crush it after drying, and pass through a 90-mesh sieve to obtain peach gum powder. Add the peach gum powder to water at a mass ratio of 1:20, and soak at room temperature After 9 hours, heat to 93°C, heat and stir for 25 minutes, then filter while it is hot, collect the filtrate, weigh the cotton stalks, cut them into 3cm pieces, put them in an oven, and dry them at 106°C to constant weight. In a steam heater, heat it to 135°C and keep it warm for 1 hour. After naturally cooling to room temperature, take out the material in the steam heater, and add the material in the steam heater to the filtrate according to the mass ratio of 1:3, and add 0.4% of the filtrate mass N-Methylolacrylamide, heated to 55°C, stirred for 5 hours, cooled to room temperature, filtered, collected filter residue, sprayed with liquid nitrogen and frozen for 35 seconds, then put it into a ceramic mortar grinder, at 90r / ...

example 3

[0034] Collect peach gum from peach trees, put it in an oven, dry at 80°C for 12 hours, crush it after drying, and pass through a 100-mesh sieve to obtain peach gum powder. Add the peach gum powder to water at a mass ratio of 1:20, and soak at room temperature After 10 hours, heat to 95°C, heat and stir for 30 minutes, then filter while it is hot, collect the filtrate, weigh the cotton stalks, cut them into 4cm pieces, put them in an oven, dry them at 108°C to constant weight, and place the dried cotton stalks In a steam heater, heat it to 140°C and keep it warm for 2 hours. After naturally cooling to room temperature, take out the material in the steam heater, and add the material in the steam heater to the filtrate according to the mass ratio of 1:3, and add 0.5% of the filtrate mass N-methylolacrylamide, heated to 60°C, stirred for 6 hours, cooled to room temperature, filtered, collected filter residue, sprayed with liquid nitrogen and frozen for 40 seconds, then put it into...

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Abstract

The invention discloses a retention aid for papermaking, and belongs to the technical field of the papermaking additive. The retention aid is prepared by the following steps: drying and smashing peach gum, stirring with water and filtering, collecting filtrate and reacting with cotton straw heated by steam, spray-freezing the collected filtrate after the filtration by using liquid nitrogen and grinding to obtain a grinding object, mixing the grinding object and dolomite after the modified smashing treatment, adding glucose and yeast powder, filtering after mixing and fermenting, collecting a filter cake, and air-drying to obtain the dried filter cake, freeze-drying potato starch and acetate-sodium acetate buffer solution after the stirring reaction, preparing micropore starch, and executing the ultrasonic dispersion and spray-drying treatment to the dried filter cake and the micropore starch, and finally collecting a dried object to obtain the retention aid for the papermaking namely. The prepared retention aid has the excellent retention effect, is capable of improving the retention rate of tiny fibers and fine materials in the paper pulp, reducing the consumption of raw materials, and keeping the smooth water filtration of the net part, and has the better market promotion value.

Description

technical field [0001] The invention discloses a retention aid for papermaking, which belongs to the technical field of papermaking aids. 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 materials. At present, the commonly used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H17/69D21H17/21D21H17/23D21H17/28D21H17/04D21H21/10
CPCD21H17/04D21H17/21D21H17/23D21H17/28D21H17/69D21H21/10
Inventor 郜九宏葛明月孙冬
Owner 淄博市博山瑞吉特化工有限公司
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