Preparation method of plastic antibacterial agent

An antibacterial agent and plastic technology, applied in the field of preparation of plastic antibacterial agents, can solve the problems of complex application conditions, poor thermal stability, lack of good compatibility and dispersibility, etc., achieving simple process and solving antibacterial properties , Easy to operate effect

Active Publication Date: 2012-09-12
FUJIAN YUETE NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. There is a certain degree of toxicity to humans, animals and the environment (including the production process and use environment);
[0006] 2. It does not have good compatibility and dispersion with raw materials and other additives for the production of polyurethane and other plastics;
[0007] 3. The application conditions are more complicated;
[0009] 5. Poor thermal stability during processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The technical scheme of the present invention is: a kind of preparation method of plastic antibacterial agent, described preparation method comprises the following steps:

[0030] 1) Immerse muscovite powder in 30% hydrogen peroxide at 80°C for 50-70 minutes, then filter, wash and dry in sequence to obtain expanded muscovite powder;

[0031] 2) Add the expanded muscovite powder obtained in step 1 to the trisodium phosphate solution at a weight ratio of 1: 1 to 3, stir and dissolve at 65 to 70°C for 4 to 6 hours, then filter, and wash the solid product with water until No PO in the lotion 4 3+ After drying for use;

[0032] 3) Add the solid product dried in step 2 to AgNO at a weight ratio of 1:10 3 In the solution, stir and react for 3-5 hours at a temperature of 55-60°C and a pH value of 6-8, then centrifuge to obtain a solid product, and wash the solid product repeatedly with distilled water until there is no Ag in the lotion + Finally, dry at 100°C to obtain i...

Embodiment 1

[0035] 1) Put 200-mesh muscovite powder in 30% hydrogen peroxide at 80°C for 50 minutes, then filter, wash and dry in sequence to obtain expanded muscovite powder;

[0036] 2) Add 300g of the expanded muscovite powder obtained in step 1 to 300g of trisodium phosphate solution with a concentration of 0.25 mol / L, stir and dissolve at 65-70°C for 4 hours, then filter, and wash the solid product with water until it is washed. No PO in the liquid 4 3+ After drying for use;

[0037] 3) Add 303g of the solid product dried in step 2 to 3030g of AgNO with a concentration of 0.05 mol / L 3 In the solution, stir and react for 4 hours at a temperature of 55-60 ° C and a pH value of 6. Mica powder and AgNO 3 The solution undergoes ion exchange and adsorption, and then centrifuges to obtain a solid product. The solid product is washed repeatedly with distilled water until there is no Ag in the washing liquid. + Finally, dry at 100°C to obtain immobilized silver mica antibacterial powd...

Embodiment 2

[0040] 1) Put 400-mesh muscovite powder in 30% hydrogen peroxide at 80°C for 70 minutes, then filter, wash and dry in sequence to obtain expanded muscovite powder;

[0041] 2) Add 300g of the expanded muscovite powder obtained in step 1 to 900g of trisodium phosphate solution with a concentration of 0.25 mol / L, stir and dissolve at 65-70°C for 6 hours, then filter, and wash the solid product with water until it is washed. No PO in the liquid 4 3+ After drying for use;

[0042] 3) Add 310 g of the solid product dried in step 2 to 3100 g of AgNO with a concentration of 0.05 mol / L 3In the solution, stir and react for 4 hours at a temperature of 55-60 ° C and a pH value of 8. Mica powder and AgNO 3 The solution undergoes ion exchange and adsorption, and then centrifuges to obtain a solid product. The solid product is washed repeatedly with distilled water until there is no Ag in the washing liquid. + Finally, dry at 100°C to obtain immobilized silver mica antibacterial powd...

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PUM

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Abstract

The invention discloses a preparation method of a plastic antibacterial agent. The preparation method comprises the following steps of: (1) soaking white mica powder in hydrogen peroxide, and then processing the soaked white mica powder to obtain expanded white mica powder; (2) placing the expanded white mica powder obtained in step (1) into trisodium phosphate solution to be stirred, dissolved, filtered, washed and dried to obtain a solid product; (3) placing the solid product obtained in the step (2) into silver nitrate (AgNO3) solution to be stirred and post-treated to obtain solid-carriedsilver mica antibacterial powder; and (4) placing the solid-carried silver mica antibacterial powder obtained in the step (3) into mixed solution with diluent and coupling agent to be mixed and then to be stirred to obtain the plastic antibacterial agent. The preparation method has simple procedure and is easy to operate and convenient for post-treatment, the prepared plastic antibacterial agent is suitable for being applied to the production of the plastics such as polyurethane, and the antibacterial property of the antibacterial agent, the thermal stability of the processing process and thebalance between the property and the cost can be solved.

Description

technical field [0001] The invention relates to an antibacterial agent, in particular to a preparation method of a plastic antibacterial agent. Background technique [0002] Antimicrobial agents are generally divided into two categories: inorganic and organic. The former uses silver, zinc, copper, etc. as the main raw materials to make inorganic antibacterial agents, which have good high temperature resistance. The latter uses esters, alcohols, and phenols as the main raw materials, and has low high temperature resistance, generally below 200°C, and the sterilization time is short, but it occasionally precipitates in the product. It is now found through experiments that metal ions such as silver, copper, zinc, nickel, and cobalt all have antibacterial properties, but metal ions such as copper, nickel, and cobalt are colored, which will affect the appearance of the product; zinc has certain antibacterial properties, but its The antibacterial strength is only 1 / 1000 of silve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K9/06C08K9/04C08K3/08C08K3/34A01N59/16A01N25/08A01P1/00
Inventor 许明洪
Owner FUJIAN YUETE NEW MATERIAL TECH
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