Antibacterial filler for filter paper and preparation method thereof

The technology of filter paper and antibacterial agent is applied in the field of antibacterial filler for filter paper, which can solve the problems of adding papermaking steps and the like, and achieve the effects of lasting antibacterial effect, simple preparation process and increasing load stability.

Active Publication Date: 2021-10-01
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, in particular to an antibacterial filler for filter paper, including filler, antibacterial agent and hydroxypropyl starch loaded on the surface of the filler. (1) Coarsely grind and finely grind the filler, pass through a 800-mesh sieve, and set aside; (2) Prepare an aqueous solution of antibacterial agent with a mass percentage concentration of 0.01-0.5%; (3) Prepare 20-50g of the product in step (1) Disperse the filler in 1L of antibacterial agent aqueous solution; (4) heat the antibacterial agent aqueous solution in step (3) to 40-60°C, and then disperse 10-30g hydroxypropyl starch in it; (5) fully Stir for 5‑10min, let stand, filter, dry, and obtain.

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 Patents(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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