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Antibacterial filler for filter paper and preparation method thereof

A technology of filter paper and antibacterial agent, applied in the field of antibacterial filler for filter paper, can solve problems such as adding papermaking steps, and achieve the effects of lasting antibacterial effect, simple preparation process and increasing adhesion stability

Active Publication Date: 2020-08-07
山东龙德复合材料科技股份有限公司
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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 filter paper base paper, which needs to be able to withstand the hydrothermal reaction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An antibacterial filler for filter paper, the filler is talcum powder, and chitin quaternary ammonium salt and hydroxypropyl starch loaded on the surface of the talc powder. Its preparation method is:

[0025] (1) Coarsely grind and finely grind the talc powder, 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 0.1%; (3) Prepare 20 g of The filler is dispersed in 1L of antibacterial agent aqueous solution; (4) Heat the antibacterial agent aqueous solution in step (3) to 40°C, and then disperse 10g of hydroxypropyl starch in it; (5) Fully stir for 5min, static Set, filter, dry, that is.

Embodiment 2

[0027] An antibacterial filler for filter paper, the filler is calcium carbonate, and chitin quaternary ammonium salt and hydroxypropyl starch loaded on the surface of the calcium carbonate. Its preparation method is:

[0028] (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 of hydroxypropyl starch in it; (5) Fully stir for 8min, statically Set, filter, dry, that is.

Embodiment 3

[0030] An antibacterial filler for filter paper, the filler is shell powder, and chitin quaternary ammonium salt and hydroxypropyl starch loaded on the surface of the shell powder. Its preparation method is:

[0031] (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 Set, filter, dry, that is.

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Abstract

The invention relates to the field of filter paper, and in particular, relates to an antibacterial filler for filter paper, wherein the antibacterial filler comprises a filler, and an antibacterial agent and hydroxypropyl starch which are loaded on the surface of the filler. A preparation method comprises the steps: (1) coarsely and finely grinding the filler, and sieving with an 800-mesh sieve for later use; (2) preparing an antibacterial agent aqueous solution with the mass percentage concentration of 0.01-0.5%; (3) dispersing 20-50 g of the filler prepared in the step (1) into 1 L of the antibacterial agent aqueous solution; (4) heating the antibacterial agent aqueous solution in the step (3) to 40-60 DEG C, and then dispersing 10-30 g of hydroxypropyl starch into the antibacterial agent aqueous solution; and (5) performing sufficient stirring for 5-10 min, standing, filtering, and drying so as to obtain the product.

Description

technical field [0001] The invention relates to the field of filter paper, in particular to an antibacterial filler for filter paper. Background technique [0002] Filter paper is widely used in air purification equipment or liquid filtration equipment to separate solid particles in gas or liquid. The principle is to use the three-dimensional network structure formed by the interlaced fibers in the filter paper, which can block solid particles while allowing solids and liquids to pass through. [0003] In the gas or liquid that needs to be filtered, it usually contains not only various inorganic solid particles, but also various bacteria. On the one hand, some bacterial filter paper cannot be effectively filtered; on the other hand, the existence of bacteria will continuously corrode the filter paper, making the filter paper lose its filtering effect. [0004] Therefore, filter paper with antibacterial effect is favored. The traditional way is to directly add antibacteria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21H17/69D21H17/67D21H21/36
CPCD21H17/675D21H17/69D21H21/36D21H27/08
Inventor 李向臻
Owner 山东龙德复合材料科技股份有限公司
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