Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF4 Cites 9 Cited by
  • 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 conduct research on starch-wrapped filler technology, but excessive use of starch will make the paper brittle, which is manifested by a decrease in paper tearability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation method of this modified filler, it comprises the 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 concentration of 15%-60% by mass. The filler main agent is one or more of diatomite, 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%-1% of the dry mass of the filler main agent to the above filler suspension, and mix well. The carboxymethylcellulose 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 dry weight of the filler main agent to the above filler suspension, and mix well. Preferably, the charge neutralizer is added under a stirring state of 300-1000 rpm. The charge neutra...

Embodiment 1

[0035] Preparation of modified filler: take the dispersed suspension containing 100 g of dry ground GCC, the mass percent concentration of the suspension is 18%, add 50 g of carboxymethyl cellulose solution with a mass percent concentration of 1%, Stir well to disperse evenly, then add 0.2g of PAC to it under stirring, after stirring for 10 minutes, add 10g of amphoteric polyacrylamide solution with a mass percent concentration of 0.5%, 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 is 380ml), hardwood bleached kraft pulp (freeness is 400ml) and alkaline hydrogen peroxide mechanical pulp (freeness is 250ml) according to 20%: 60% : 20% ratio is mixed to obtain a mixed slurry, and the mass percentage concentration of the mixed slurry is 1%. Take 2000g of mixed slurry, add 39.5g of the above-mentioned modified filler under stirring, add 5g of cationic polyacrylamide re...

Embodiment 2

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

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com