Modification filling material and preparation method thereof, and slurry adopting modification filling material

A modified and dry-quality technology, applied in the direction of fibrous fillers, chemical instruments and methods, inorganic pigment treatment, etc., can solve the problems of paper becoming brittle, paper tearing, etc., to increase the binding force and improve the cleanliness , Improve the effect of retention and filtration

Active Publication Date: 2013-11-13
GOLD EAST PAPER JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology needs to invest a lot of equipment to carry out, and there are few fillers that can really settle in the cell cavity
Domestic enterprises c

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] The preparation method of the modified filler includes the following steps:

[0025] (1) Prepare filler suspension.

[0026] Take a certain amount of filler main agent and add water to prepare a filler suspension with a mass percentage of 15%-60%. The main filler of the filler is one or more of diatomaceous earth, zeolite, bentonite, talc, calcium carbonate, kaolin, sericite, natural calcium metasilicate, gypsum, barite, and pyrophyllite.

[0027] (2) Add carboxymethyl cellulose.

[0028] Add carboxymethyl cellulose with an absolute dry mass of 0.5% to 1% of the absolute dry mass of the filler main agent to the filler suspension, and mix it evenly. The carboxymethyl cellulose is preferably added as a solution.

[0029] (3) Add charge neutralizer.

[0030] Add a charge neutralizer with a mass of 0.2%-0.4% of the absolute dry mass of the filler main agent to the filler suspension, and mix it evenly. Preferably, the charge neutralizer is added under a stirring state of 300-1000 re...

Example Embodiment

[0034] Example 1

[0035] Preparation of modified filler: take a dispersed suspension containing 100g of absolutely dry ground GCC, the mass percentage of the suspension is 18%, and add 50g of a 1% mass percentage carboxymethyl cellulose solution, Stir fully to make it evenly dispersed, and then add 0.2g PAC to it under stirring. After stirring for 10 minutes, add 10g of amphoteric polyacrylamide solution with a concentration of 0.5% by mass and stir for 20 minutes to obtain a modified filler with a particle size of 35-40μm.

[0036] Preparation of pulp: take softwood bleached kraft pulp (freeness of 380ml), hardwood bleached kraft pulp (freeness of 400ml) and alkaline hydrogen peroxide mechanical pulp (freeness of 250ml) according to 20%: 60% : 20% ratio is mixed to prepare a mixed slurry, and the mass percentage concentration of the mixed slurry is 1%. Take 2000g of the mixed slurry and add 39.5g of the above modified filler under stirring. After an interval of 10 seconds, add ...

Example Embodiment

[0037] Example 2

[0038] Preparation of modified filler: take a dispersed suspension containing 100g of absolutely dry ground GCC, the mass percentage of the suspension is 18%, add 100g of carboxymethyl cellulose solution with a mass percentage of 1%, Stir fully to make it evenly dispersed, then add 0.4g PAC to it under stirring, stir for 10 minutes, add 5g of polyamide-epichlorohydrin resin solution with a mass percentage of 10%, stir for 20 minutes to prepare modified filler The particle size is 20-25μm.

[0039] Preparation of the slurry: Preparation with reference to the method in Example 1, wherein the mass of the modified filler prepared in Example 2 was 39.7 g.

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Abstract

The invention provides a modification filling material used in the field of papermaking. The modification filling material comprises a filling material main agent which is one or more selected from diatomite, zeolite, bentonite, talc, calcium carbonate, kaolin, silk cristobalite, natural calcium metasilicate, gypsum, barite, and pyrophyllite. The modification filling material also comprises carboxymethyl cellulose, a charge neutralizing agent, and a coagulation agent. The mass of the carboxymethyl cellulose is 0.5-1% of a filling material main agent absolute mass, the mass of the charge neutralizing agent is 0.2-0.4% of the filling material main agent absolute mass, and with the addition amount of the coagulation agent, the filling material is coagulated into a coagulated filling material with a particle size of 20-80mum. The invention also provides a preparation method of the modification filling material, and a slurry adopting the modification filling material. When the modification filling material is applied in the slurry, prepared paper has good performances, and cost can be saved.

Description

technical field [0001] The invention relates to a modified filler used in the field of papermaking, a preparation method thereof, and a slurry using the modified filler. Background technique [0002] In the paper industry, adding inorganic fillers to the slurry can not only significantly improve the whiteness, opacity and smoothness of the papermaking paper, but also improve the water filtration performance of the slurry during the papermaking process and reduce the loss of paper during the drying process. of heat energy consumption. In addition, compared with pulp fibers, inorganic fillers are not only cheaper, but also have lower carbon emissions. However, due to the weak binding force between the filler and the pulp fiber, the addition of the filler will cause a decrease in the strength of the paper. [0003] At present, papermaking enterprises at home and abroad are competing to study the high filling technology of fillers. For example, the cell lumen filling technolo...

Claims

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Application Information

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IPC IPC(8): D21H17/67D21H17/68D21H21/18C09C1/02C09C3/06C09C3/10
Inventor 王仁荣秦昀昌穆永生王双
Owner GOLD EAST PAPER JIANGSU
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