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Specific papermaking filling and paper containing same

A powder and monomer technology, applied in the field of inorganic non-metallic powder composite materials, can solve the problems of increasing the complexity of the wet end environment and low connection strength

Active Publication Date: 2013-10-30
李汝基
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the good water solubility of the water-soluble polymer, and its connection with the powder is only physical adsorption, its connection strength is low. During the papermaking process, the water-soluble polymer will desorb and dissolve on the surface of the powder. Into the medium, increasing the complexity of the wet end environment

Method used

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  • Specific papermaking filling and paper containing same
  • Specific papermaking filling and paper containing same
  • Specific papermaking filling and paper containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This example is a production example of the special filler for composite papermaking of the present invention.

[0037] A. Pretreatment: In a 300ml beaker, sequentially add 60g of talc powder with a particle size of 800 mesh, 200g of absolute ethanol, and 0.18g of vinyltriethoxysilane, disperse by ultrasonic oscillation for 1 hour, and then transfer it into the In a water bath and a 300ml three-neck flask with a stirring and reflux condensing device, under the control of the boiling temperature of ethanol, stir and reflux for 60 minutes. After cooling down later, the suspension was subjected to vacuum filtration, and the filter cake was dried at 105° C. until the mass was constant to obtain a pretreated talc powder.

[0038] B. Coating modification: 50g of the above-mentioned pretreated powder, 200g of deionized water, 1.50g of acrylamide, 0.20g of dimethyldiallylammonium chloride, and 0.10g of methylenebisacrylamide And sodium persulfate 0.02g, add in turn into a 300m...

Embodiment 2

[0041] This example is another manufacturing example of the special filler for composite papermaking of the present invention.

[0042] A. Pretreatment: In a 300ml beaker, sequentially add 60g of kaolin powder with a particle size of 800 mesh, 200g of absolute ethanol, and 0.18g of vinyltriethoxysilane, disperse by ultrasonic oscillation for 1 hour, and then transfer it into a temperature-controlled water bath In a 300ml three-necked flask with a stirring and reflux condensing device in a pot, the mixture was stirred and refluxed for 60 minutes at the boiling temperature of ethanol. After cooling down later, the suspension was subjected to vacuum filtration, and the filter cake was dried at 105° C. until the quality was constant, that is, a pretreated kaolin powder was obtained.

[0043] B. Coating modification: 50g of the above-mentioned pretreated powder, 200g of deionized water, 1.50g of acrylamide, 0.20g of dimethyldiallylammonium chloride, and 0.10g of methylenebisacrylam...

Embodiment 3

[0046] This example is another manufacturing example of the special filler for composite papermaking of the present invention.

[0047] A. Pretreatment: In a 300ml beaker, sequentially add 60g of talc powder with a particle size of 800 mesh, 200g of absolute ethanol, and 0.18g of vinyltriethoxysilane, disperse by ultrasonic oscillation for 1 hour, and then transfer it into the In a water bath and a 300ml three-neck flask with a stirring and reflux condensing device, under the control of the boiling temperature of ethanol, stir and reflux for 60 minutes. After cooling down later, the suspension was subjected to vacuum filtration, and the filter cake was dried at 105° C. until the mass was constant to obtain a pretreated talc powder.

[0048] B. Coating modification: 50g of the above-mentioned pretreated powder, 200g of deionized water, 1.5g of acrylic acid, 0.10g of methylenebisacrylamide and 0.015g of sodium persulfate were added in sequence In a water bath and a 300ml three-...

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Abstract

The invention discloses a specific composite papermaking filling. The specific composite papermaking filling is a compound with a core-shell structure, wherein powder is taken as a core of the compound with the core-shell structure, a coating membrane which is grafted with the powder and contains acrylamide copolymers is taken as a shell layer of the compound with the core-shell structure, and the powder is spherical, sheet-shaped, staple fiber-shaped, needle-shaped or irregular inorganic powder; and the coating membrane shell layer containing the acrylamide copolymers is formed by copolymerization of monomers (a), (b) and (c). According to the specific composite papermaking filling with the core-shell structure, except a non-desorption function, a polymer membrane at the surface of the shell layer further has hydrophily and cationic performance, so that the paper can be strengthened and toughened when the web end retention rate is maintained or even improved in a paper filling process; besides, the characteristics of the specific composite papermaking filling can be adequately utilized, and particularly the specific composite papermaking filling can be used as the special filling for paper.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic powder composite materials, and in particular relates to a special filler for papermaking and a preparation method for composite modification, and paper containing the special filler. Background technique [0002] In the process of paper production, adding fillers to pulp can greatly improve the performance of some aspects of paper, such as opacity, whiteness, smoothness and printability. At the same time, it can also increase the speed of papermaking and reduce the amount of steam. Reduce paper production costs. However, adding fillers to pulp also has disadvantages, such as reduced sizing and substantial reduction in physical strength. [0003] At present, in terms of filling technology, from the early pre-flocculation technology, fiber cell lumen filling technology and fine fiber / calcium carbonate composite technology to the present powder surface modification technology are all to increa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/69C08F292/00C08F220/56C08F220/06C08F226/04C08F230/08C08F222/38
Inventor 李汝基林润惠郭纬
Owner 李汝基
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