Antibacterial filter paper and preparation method thereof

A technology of filter paper and antibacterial agent, which is applied in the field of antibacterial filter paper, can solve the problems of increasing papermaking steps, etc., and achieve the effect of lasting antibacterial effect, increasing load stability, and lasting excellent antibacterial effect

Active Publication Date: 2020-08-07
ASIA SYMBOL GUANGDONG PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method will increase the papermaking steps, and has certain requirements for the base filter paper, which needs to be able to withstand the subsequent chemical modification reaction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An antibacterial filter paper comprises, by weight, 60 parts of pulp fiber, 20 parts of antibacterial filler, 2 parts of water-soluble resin, 2 parts of wetting agent and 8 parts of thickener.

[0025] The pulp fiber is a mixed fiber with a mass ratio of bamboo fiber and cotton fiber of 1:1. The antibacterial filler uses shell powder as the filler core, and the surface is loaded with chitin quaternary ammonium salt and hydroxypropyl starch. The water-soluble resin is polyvinyl alcohol. Thickener is starch.

[0026] The preparation method of antibacterial filler is:

[0027] (1) Coarsely grind and finely grind the shell powder, pass through a 800-mesh sieve, and set aside; (2) Prepare an aqueous chitin quaternary ammonium salt solution with a mass percentage concentration of 0.3%; (3) Prepare 50 g of Disperse the filler in 1L of antibacterial agent aqueous solution; (4) Heat the antibacterial agent aqueous solution in step (3) to 50°C, and then disperse 30g of hydroxypr...

Embodiment 2

[0030] An antibacterial filter paper comprises, by weight, 50 parts of pulp fiber, 15 parts of antibacterial filler, 1 part of water-soluble resin, 1 part of wetting agent and 5 parts of thickener.

[0031] The pulp fiber is a mixed fiber with a mass ratio of wood fiber and cotton fiber of 1:1. The antibacterial filler uses calcium carbonate as the filler core, and the surface is loaded with chitin quaternary ammonium salt and hydroxypropyl starch. The water-soluble resin is polyethylene glycol. The thickener is gelatin.

[0032] The preparation method of antibacterial filler is:

[0033] (1) Coarsely grind and finely grind calcium carbonate, pass through a 800-mesh sieve, and set aside; (2) Prepare an aqueous solution of chitin quaternary ammonium salt with a mass percentage concentration of 0.2%; (3) Prepare 30 g of Disperse the filler in 1L of antibacterial agent aqueous solution; (4) Heat the antibacterial agent aqueous solution in step (3) to 50°C, and then disperse 20g ...

Embodiment 3

[0036] An antibacterial filter paper comprises, by weight, 70 parts of pulp fiber, 25 parts of antibacterial filler, 3 parts of water-soluble resin, 3 parts of wetting agent and 10 parts of thickener.

[0037] The pulp fiber is bamboo fiber, the antibacterial filler uses shell powder as the filler core, the surface is loaded with chitin quaternary ammonium salt and hydroxypropyl starch, the water-soluble resin is polyvinyl alcohol, and the thickener is dextrin.

[0038] The preparation method of antibacterial filler is:

[0039] (1) Coarsely grind and finely grind the shell powder, pass through a 800-mesh sieve, and set aside; (2) Prepare an aqueous chitin quaternary ammonium salt solution with a mass percentage concentration of 0.3%; (3) Prepare 50 g of Disperse the filler in 1L of antibacterial agent aqueous solution; (4) Heat the antibacterial agent aqueous solution in step (3) to 50°C, and then disperse 30g of hydroxypropyl starch in it; (5) Fully stir for 10min, static S...

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PUM

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Abstract

The invention relates to the field of antibacterial filter paper. The antibacterial filter paper is composed of 50 to 70 parts of paper pulp fibers, 15 to 25 parts of an antibacterial filler, 1 to 3 parts of water-soluble resin, 1 to 3 parts of a wetting agent and 5 to 10 parts of a thickening agent. The antibacterial filler comprises a filler core, an antibacterial agent and hydroxypropyl starch,wherein the surface of the filler core is coated with the antibacterial agent and the hydroxypropyl starch. A preparation method comprises the steps: repulping and pulping the paper pulp fibers to prepare paper pulp slurry, then adding an antibacterial filler, water-soluble resin, the wetting agent and the thickening agent into the paper pulp slurry, and uniformly stirring; and carrying out papermaking, screening, squeezing, drying and curling to obtain the product. The antibacterial agent is stably loaded on the surface of the antibacterial filler in advance, and then the antibacterial filler is added into papermaking pulp to prepare the antibacterial filter paper, so that a lasting and excellent antibacterial effect can be obtained.

Description

technical field [0001] The invention relates to the field of filter paper, in particular to an antibacterial filter paper. Background technique [0002] Filter paper has a three-dimensional network structure formed by interlaced fibers, which can pass solids and liquids while blocking solid particles. It is an important component of air purification equipment or liquid filtration equipment. [0003] With the wide application of filter paper, its performance requirements are getting higher and higher, especially the antibacterial requirements. Commonly used methods to impart antibacterial properties to filter paper are physical adhesion and chemical modification. The physical adhesion method refers to directly adding the antibacterial agent to the paper pulp, and the antibacterial agent is attached to the filter paper through the force value adhesion. Because the physical adhesion method only relies on the physical adhesion between the antibacterial agent and the paper, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21H17/69D21H17/67D21H21/36D21H11/12D21F11/14
CPCD21F11/14D21H11/12D21H17/675D21H17/69D21H17/74D21H21/36D21H27/08
Inventor 李向臻
Owner ASIA SYMBOL GUANGDONG PAPER
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